COMPONENT HOUSING UNIT AND A VEHICLE THERMAL MANAGEMENT SYSTEM COMPRISING A COMPONENT HOUSING UNIT

Abstract

A component housing unit for a vehicle thermal management system is configured for attachment to an exterior surface of an expansion tank having an interior surface defining an interior volume. The component housing unit is configured for connection to a first thermal control loop and a second thermal control loop. The component housing unit is configured for connecting the interior volume of the expansion tank to the first thermal control loop and the second thermal control loop respectively. The component housing unit includes a first component interface configured for direct attachment of a first system component connected to the first thermal control loop, and a second component interface configured for direct attachment of a second system component connected to the second thermal control loop.

Claims

1. A component housing unit for a vehicle thermal management system, wherein the component housing unit is configured for being attached to an exterior surface of an expansion tank having an interior surface defining an interior volume, wherein the component housing unit is configured for being connected to a first thermal control loop and a second thermal control loop, and wherein the component housing unit is configured for connecting the interior volume of the expansion tank to the first thermal control loop and the second thermal control loop respectively, wherein the component housing unit comprises a first component interface configured for direct attachment of a first system component connected to the first thermal control loop, and a second component interface configured for direct attachment of a second system component connected to the second thermal control loop, wherein the component housing unit comprises a valve unit, wherein when the valve unit is in a first position the thermal control loops are arranged in a parallel relationship, and when the valve unit is in a second position the thermal control loops are arranged in series.

2. The component housing unit according to claim 1, wherein the component housing unit comprises a first flow channel connected to the first component interface, and a second flow channel connected to the second component interface.

3. The component housing unit according to claim 2, wherein the first flow channel and the second flow channel are separately arranged from each other within the component housing unit.

4. The component housing unit according to claim 2, wherein the first flow channel comprises a first tank flow port and the second flow channel comprises a second tank flow port, wherein the first tank flow port is configured for connecting the first flow channel to the interior volume of the expansion tank via a first inlet/outlet flow opening of the expansion tank, and wherein the second tank flow port is configured for connecting the second flow channel to the interior volume of the expansion tank via a second inlet/outlet flow opening of the expansion tank.

5. The component housing unit according to claim 2, wherein the first component interface is configured for attaching a first circulation pump to the component housing unit, and the second component interface is configured for attaching a second circulation pump to the component housing unit.

6. The component housing unit according to claim 2, wherein the component housing unit comprises a first housing flow port configured for connecting the component housing unit to the first thermal control loop and/or the second thermal control loop, and a second housing flow port configured for connecting the component housing unit to the second thermal control loop and/or the first thermal control loop, wherein the first flow channel is extending between the first housing flow port and the first component interface, and wherein the second flow channel is extending between the second housing flow port and the second component interface.

7. The component housing unit according to claim 6, wherein the valve unit comprises a valve housing formed within the component housing unit, and a first valve inlet flow port and a second valve inlet flow port connected to the valve housing; wherein the first valve inlet flow port is configured for connecting the valve unit to the first thermal control loop, and the second inlet flow port is configured for connecting the valve unit to the second thermal control loop; wherein the valve housing further is connected to the first housing flow port and the second housing flow port, wherein the valve unit is configured for connecting the first valve inlet flow port to the first flow channel and/or the second flow channel, and the second valve inlet flow port to the second flow channel and/or the first flow channel.

8. The component housing unit according to claim 2, wherein the first flow channel comprises a first air separator configured for directing separated air to the expansion tank, and/or the second flow channel comprises a second air separator configured for directing separated air to the expansion tank.

9. The component housing unit according to claim 1, wherein the component housing unit comprises one or more further component interfaces configured for direct attachment of one or more corresponding further system components.

10. The component housing unit according to claim 1, wherein the component housing unit is configured for being connected to one or more further thermal control loops, wherein the component housing unit is configured for connecting the interior volume of the expansion tank to the one or more further thermal control loops.

11. A vehicle thermal management system comprising a component housing unit according to claim 1, wherein the system further comprises an expansion tank, a first thermal control loop, a second thermal control loop, a first system component, and a second system component; wherein the expansion tank is arranged with an exterior surface, and an interior surface defining an interior volume, wherein the component hosing unit is attached to the exterior surface of the expansion tank; wherein the first thermal control loop and the second thermal control loop are connected to the component housing unit, wherein the component housing unit is connecting the interior volume of the expansion tank to the first thermal control loop and the second thermal control loop respectively; wherein the component housing unit comprises a first component interface and a second component interface, wherein the first system component is connected to the first thermal control loop, and the second system component is connected to the second thermal control loop, wherein the first system component is directly attached to the first component interface and the second system component is directly attached to the second component interface, wherein the component housing unit further comprises a valve unit, wherein when the valve unit is in a first position the thermal control loops are arranged in a parallel relationship and when the valve 5 unit is in a second position the thermal control loops are arranged in series.

12. The vehicle thermal management system according to claim 11, wherein the component housing unit comprises a first flow channel connected to the first component interface, and a second flow channel connected to the second component interface, wherein the first flow channel comprises a first tank flow port and the second flow channel comprises a second tank flow port, wherein the first tank flow port is connecting the first flow channel to the interior volume of the expansion tank via a first inlet/outlet flow opening of the expansion tank, and wherein the second tank flow port is connecting the second flow channel to the interior volume of the expansion tank via a second inlet/outlet flow opening of the expansion tank.

13. The vehicle thermal management system according to claim 11, wherein the valve unit comprises a valve housing formed within the component housing unit, and a first valve inlet flow port and a second valve inlet flow port connected to the valve housing; wherein the first valve inlet flow port is connecting the valve unit to the first thermal control loop, and the second inlet flow port is connecting the valve unit to the second thermal control loop; wherein the valve housing further is connected to a first housing flow port and a second housing flow port, wherein the valve unit is connecting the first valve inlet flow port to the first flow channel and/or the second flow channel, and the second valve inlet flow port to the second flow channel and/or the first flow channel.

14. The vehicle thermal management system according to claim 11, wherein the component housing unit comprises one or more further component interfaces and the system further comprises one or more corresponding further system components, wherein the one or more further system components are directly attached to the one or more further component interfaces.

15. The vehicle thermal management system according to claim 11, wherein the system further comprises one or more further thermal control loops, wherein the component housing unit is connecting the interior volume of the expansion tank to the one or more further thermal control loops.

16. The vehicle thermal management system according to claim 11, wherein the system components are removably attached to their corresponding component interfaces.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The disclosure will be described in detail in the following, with reference to the attached drawings, in which

[0030] FIGS. 1A-1B show schematically, in front and rear perspective views a component housing unit and an expansion tank according to the disclosure,

[0031] FIG. 2 shows schematically, in a rear perspective view the component housing unit according to the disclosure,

[0032] FIGS. 3A-3B show schematically, in front cross-sectional views the component housing unit and the expansion tank according to the disclosure,

[0033] FIG. 4 shows schematically, an embodiment of the vehicle thermal management system with the component housing unit and the expansion tank according to the disclosure, and

[0034] FIG. 5 shows schematically, an alternative embodiment of the vehicle thermal management system with the component housing unit and the expansion tank according to the disclosure.

DETAILED DESCRIPTION

[0035] Various aspects of the disclosure will hereinafter be described in conjunction with the appended drawings to illustrate and not to limit the disclosure, wherein like designations denote like elements, and variations of the described aspects are not restricted to the specifically shown embodiments, but are applicable on other variations of the disclosure.

[0036] FIG. 4 schematically shows a schematic structure of a vehicle thermal management system S according to the disclosure, where the system S is used in a vehicle for controlling the temperature ranges of different vehicle units. The system S may also be used for controlling the temperature ranges of a passenger compartment or similar structure of the vehicle. In the embodiment shown in FIG. 4, the vehicle thermal management system has a two thermal control loop configuration, with a first thermal control loop 3a and a second thermal control loop 3b. The first thermal control loop 3a and the second thermal control loop 3b are connected to a component housing unit 1, and the component housing unit 1 is connected to an expansion tank 2.

[0037] The vehicle thermal management system S is used for controlling the temperature ranges of vehicle units with a heat transfer fluid or coolant that is circulated in the first thermal control loop 3a and the second thermal control loop 3b, and the temperature ranges of the respective thermal control loops are for example depending on the driving conditions of the vehicle and the variations in ambient temperature. The heat transfer fluid may be of any suitable type for vehicle applications.

[0038] In the embodiment illustrated in FIG. 4, the first thermal control loop 3a is connected to a first vehicle unit A, and the second thermal control loop 3b is connected to a second vehicle unit B. The first vehicle unit A may for example be a battery temperature regulating unit and the second vehicle unit B may for example be a power electronics temperature regulating unit. The battery temperature regulating unit may for example be used for controlling the temperatures of one or more batteries with related components used in the vehicle system. The power electronics temperature regulating unit may for example be used for controlling the temperatures of the power electronic components, such as the electric motor and other electric components being part of the power electronics system.

[0039] The thermal control loop configurations and components may be of any conventional type used for vehicle purposes, and will not be described in detail. It should however be understood that the system S may be used for heating or cooling other types of vehicle units or components than the ones described above, depending on the design and construction of the vehicle and the vehicle systems. It should be understood that the respective control loops may include any suitable number of components for controlling the temperature ranges and the flow of heat transfer fluid, such as for example heat exchangers, chillers, heaters, filters, air separators, connectors, fans, valves, circulation pumps, and/or any other components known in the art as related to such thermal systems.

[0040] The system may further comprise a control unit for controlling the system components, the temperature ranges, and the flow of heat transfer fluid. The thermal control loops are connecting the component housing unit 1 to the vehicle units or components with conduits, pipes or other suitable connection means. The vehicle thermal management system S according to the disclosure is designed and constructed in a way so that the system is adapted for being operated in different operational modes controlled by the control unit, where the heat transfer fluid is efficiently circulated to the vehicle units or components.

[0041] FIG. 2 schematically shows the component housing unit 1 for the vehicle thermal management system S. As schematically shown in FIGS. 1A-1B and 3A-3B, the component housing unit 1 is configured for being attached to an exterior surface 2a of the expansion tank 2. The expansion tank 2 has an interior surface 2b defining an interior volume 2c. The component housing unit 1 is configured for being connected to the first thermal control loop 3a and the second thermal control loop 3b, as illustrated in FIG. 4 with suitable connection means as will be further described below, and the component housing unit 1 is configured for connecting the interior volume 2c of the expansion tank 2 to the first thermal control loop 3a and the second thermal control loop 3b respectively. Expansion tanks are commonly used in vehicle thermal management systems for handling fluid expansion. The expansion tank 2 may have any suitable configuration for cooperating with the respective thermal control loops, and the heat transfer fluid circulated in the system is allowed to expand into and flow out from the expansion tank 2.

[0042] In the embodiment illustrated in FIGS. 1A-1B and 3A-3B, the expansion tank 2 is made from a first tank section 2d and a second tank section 2e that are joined with suitable attachment means. The first tank section 2d is arranged with a fill opening 2f for the heat transfer fluid. The fill opening 2f may be provided with a lid or other suitable closure means, as schematically indicated in FIGS. 1A-1B. The expansion tank 2 may have other suitable configurations, and the expansion tank 2 may instead be made from a single piece of material, or made from two or more joined sections. The expansion tank 2 may be made from any suitable materials, such as for example plastic materials, composite materials, or metallic materials. The sections forming the expansion tank 2 may for example be glued, welded, screwed together, or alternatively joined by other suitable fastening means. In the illustrated embodiment, the interior volume 2c is forming a single compartment for the heat transfer fluid. It should however be understood that the interior volume 2c may be divided into two or more compartments depending on the construction and design of the system S. The compartments may be separated from each other for supporting different thermal control loops, and/or alternatively be connected to each other.

[0043] As shown in FIGS. 1A-1B, 2 and 3A-3B, the component housing unit 1 comprises a first component interface 4a configured for direct attachment of a first system component 5a. The first system component 5a is connected to the first thermal control loop 3a. The first system component 5a may be any type of component used in the system S, such as for example a circulation pump, a valve, a heat exchanger, or an air separator. The component housing unit 1 comprises a second component interface 4b configured for direct attachment of a second system component 5b. The second system component 5b is connected to the second thermal control loop 3b. The second system component 5b may be any type of component used in the system S, such as for example a circulation pump, a valve, a heat exchanger, or an air separator. The first component interface 4a and the second component interface 4b are provided with suitable connection means for direct attachment of the respective first system component 5a and the second system component 5b. The connection means of the component interfaces are designed to cooperate with corresponding matching connection means arranged on the system components and any suitable type of connection means may be used, such as for example screw or threaded connectors, bayonet connectors, and plug-in connectors with locking means for holding the system component connected to the corresponding component interface. Through the connection means, the system components 5a, 5b are removably attached to their corresponding component interfaces 4a, 4b, for simple maintenance or exchange of components.

[0044] In the embodiment illustrated in FIG. 2, the first component interface 4a is provided with a set of first threads 16a, and the first system component 5a is provided with a corresponding cooperating set of second threads 16b. The first system component 5a is threaded into the first component interface 4a for an efficient attachment and removal of the first system component 5a to the component housing unit 1. The second component interface 4b and the second system component 5b may be provided with similar cooperating threads for an efficient attachment and removal of the second system component 5b to the component housing unit 1. In FIG. 2, the second system component 5b is directly attached to the component housing unit 1 via the second component interface 4b. With direct attachment is meant that the system components are directly attached to the component interfaces of the component housing unit 1 without any intermediate hoses or other types of intermediate members. With such a direct attachment, the system can be designed with fewer components for saving space and weight. It should however be understood that gaskets or similar sealing members may be arranged in connection to the component housing unit 1 between the system components and the corresponding component interfaces.

[0045] In the embodiments illustrated in the figures, the first system component 5a is a first circulation pump 10a and the second system component 5b is a second circulation pump 10b. The first circulation pump 10a is pumping heat transfer fluid from the component housing unit 1 to the first thermal control loop 3a, and the second circulation pump 10b is pumping heat transfer fluid from the component housing unit 1 to the second thermal control loop 3b. The first component interface 4a is configured for attaching the first circulation pump 10a to the component housing unit 1, and the second component interface 4b is configured for attaching the second circulation pump 10b to the component housing unit 1, for example via cooperating threads as described above. The first circulation pump 10a and the second circulation pump 10b may be of any conventional type suitable for circulating heat transfer fluid in vehicle thermal systems, and may be of different types and configurations depending on the size and design of the system. As shown in FIGS. 1A-1B and 2, the first component interface 4a may be provided with a first pump outlet 10c for the flow of heat transfer fluid from the first circulation pump 10a into the first thermal control loop 3a. The second component interface 4b may be provided with a second pump outlet 10d for the flow of heat transfer fluid from the second circulation pump 10b into the second thermal control loop 3b. In an alternative non-illustrated embodiment, the pump outlets may instead be arranged directly on the respective circulation pumps.

[0046] As schematically illustrated in FIGS. 3A-3B, the component housing unit 1 comprises a first flow channel 6a and a second flow channel 6b for the heat transfer fluid. The first flow channel 6a is connected to the first component interface 4a, and the second flow channel 6b is connected to the second component interface 4b, allowing the heat transfer fluid to flow from the respective flow channels 6a,6b to the circulation pumps 10a, 10b via the component interfaces 4a, 4b. In the illustrated embodiment, the first flow channel 6b and the second flow channel 6b are separately arranged from each other within the component housing unit 1. However, in other embodiments, the first flow channel 6b and the second flow channel 6b may be directly or indirectly connected to each other within the component housing unit 1.

[0047] As schematically illustrated in FIGS. 3A-3B, the first flow channel 6a comprises a first tank flow port 8a and the second flow channel 6b comprises a second tank flow port 8b. The expansion tank 2 comprises a first inlet/outlet flow opening 9a and a second inlet/outlet flow opening 9b. The first tank flow port 8a is configured for connecting the first flow channel 6a to the interior volume 2c of the expansion tank 2 via the first inlet/outlet flow opening 9a of the expansion tank 2. The first flow channel 6a is thus in fluid communication with the interior volume 2c of the expansion tank 2 via the first tank flow port 8a and the first inlet/outlet flow opening 9a. The first tank flow port 8a may for example be arranged as a channel section of or an opening in the first flow channel 6a. The first inlet/outlet flow opening 9a may be arranged as a channel section of, an opening in, or similar arrangement in the expansion tank 2 allowing fluid communication with the first tank flow port 8a. The first tank flow port 8a is arranged in an overlapping relationship with the first inlet/outlet flow opening 9a, as shown in FIGS. 3A-3B, and the heat transfer fluid can expand from the first flow channel 6a into the expansion tank 2 or flow out from the expansion tank 2 to the first flow channel 6a. The second tank flow port 8b is configured for connecting the second flow channel 6b to the interior volume 2c of the expansion tank 2 via the second inlet/outlet flow opening 9b of the expansion tank 2. The second flow channel 6b is thus in fluid communication with the interior volume 2c of the expansion tank 2 via the second tank flow port 8b and the second inlet/outlet flow opening 9b. The second tank flow port 8b may for example be arranged as a channel section of or an opening in the first flow channel 6a. The second inlet/outlet flow opening 9b may be arranged as a channel section of, an opening in, or similar arrangement in the expansion tank 2 allowing fluid communication with the second tank flow port 8b. The second tank flow port 8b is arranged in an overlapping relationship with the second inlet/outlet flow opening 9b, as shown in FIGS. 3A-3B, and the heat transfer fluid can expand from the second flow channel 6b into the expansion tank 2 or flow out from the expansion tank 2 to the second flow channel 6b.

[0048] With the described configuration of the system S, the component housing unit 1 comprises the first flow channel 6a connected to the first component interface 4a, and the second flow channel 6b connected to the second component interface 4b. The first flow channel 6a comprises the first tank flow port 8a and the second flow channel 6b comprises the second tank flow port 8b. The first tank flow port 8a is efficiently connecting the first flow channel 6a to the interior volume 2c of the expansion tank 2 via the first inlet/outlet flow opening 9a of the expansion tank 2, and the second tank flow port 8b is efficiently connecting the second flow channel 6b to the interior volume 2c of the expansion tank 2 via the second inlet/outlet flow opening 9b of the expansion tank 2.

[0049] As schematically illustrated in FIGS. 3A-3B, the component housing unit 1 comprises a first housing flow port 7a configured for connecting the component housing unit 1 to the first thermal control loop 3a and/or the second thermal control loop 3b. The component housing unit 1 comprises a second housing flow port 7b configured for connecting the component housing unit 1 to the second thermal control loop 3b and/or the first thermal control loop 3a. The first flow channel 6a is extending between the first housing flow port 7a and the first component interface 4a, and the second flow channel 6a is extending between the second housing flow port 7b and the second component interface 4b.

[0050] The component housing unit 1 may further comprise one or more valve units. The valve unit 11 may have any suitable configuration for distributing the flow of heat transfer fluid entering the component housing unit 1 from the first thermal control loop 3a to the first flow channel 6a and/or the second flow channel 6b, and for distributing the flow of heat transfer fluid entering the component housing unit 1 from the second thermal control loop 3b to the second flow channel 6b and/or the first flow channel 6a.

[0051] In the embodiment illustrated in FIGS. 1A-1B, 2 and 3A-3B, the component housing unit 1 further comprises one valve unit 11. The valve unit 11 comprises a valve housing 11c formed within the component housing unit 1, a first valve inlet flow port 11a and a second valve inlet flow port 11b connected to the valve housing 11c. The first valve inlet flow port 11a is configured for connecting the valve unit 11 to the first thermal control loop 3a, and the second inlet flow port 11b is configured for connecting the valve unit 11 to the second thermal control loop 3b. The valve housing 11c is further connected to the first housing flow port 7a and the second housing flow port 7b respectively. The valve unit 11 is through this design configured for connecting the first valve inlet flow port 11a to the first flow channel 6a and/or the second flow channel 6b, and the second valve inlet flow port 11b to the second flow channel 6b and/or the first flow channel 6a. The valve unit 11 further comprises a valve member 11d that is movable between different valve positions, as schematically illustrated in FIGS. 3A-3B. The movable valve member 11d is connected to a valve actuator 11e, as shown in FIG. 2, and the valve actuator 11e is arranged for moving the valve member 11d between the different valve positions. The valve actuator 11e may have any suitable configuration and design, and as an example, an electric motor may be used as the valve actuator 11e. The valve member 11d comprises a first valve flow channel 11f and a second valve flow channel 11g for the heat transfer fluid, and with the first and second valve flow channels, the valve unit 11 has a four-way valve configuration. In this way, the system S comprises the valve unit 11, for an efficient distribution of the heat transfer fluid through the connection of the first valve inlet flow port 11a to the first flow channel 6a and/or the second flow channel 6b, and the second valve inlet flow port 11b to the second flow channel 6b and/or the first flow channel 6a, as will be further described below.

[0052] In FIG. 3A, the valve unit 11 is arranged in a first valve position. In the first valve position, the valve unit 11 is distributing the heat transfer fluid in the first valve flow channel 11f from the first valve inlet flow port 11a to the first flow channel 6a, and in the second valve flow channel 11g from the second valve inlet flow port 11b to the second flow channel 6b. In this way the thermal control loops are arranged in a parallel relationship, where the flow of heat transfer fluid in the first thermal control loop 3a is separated from the flow of heat transfer fluid in the second thermal control loop 3b.

[0053] In FIG. 3B, the valve unit 11 is arranged in a second valve position. In the second valve position, the valve unit 11 is distributing the heat transfer fluid in the second valve flow channel 11g from the first valve inlet flow port 11a to the second flow channel 6b, and in the first valve flow channel 11f from the second valve inlet flow port 11b to the first flow channel 6a. In this way the thermal control loops are arranged in series, where the flow of heat transfer fluid in the first thermal control loop 3a is connected to the flow of heat transfer fluid in the second thermal control loop 3b.

[0054] The vehicle thermal management system S could with the described configuration be arranged with few components, where the system S comprises the component housing unit 1, the expansion tank 2, the first thermal control loop 3a, the second thermal control loop 3b, the first system component 5a, and the second system component 5b. The expansion tank 2 is as described above arranged with the exterior surface 2a, and the interior surface 2b defining the interior volume 2c. The component hosing unit 1 is attached to the exterior surface 2a of the expansion tank 2 with suitable attachment means. The component housing unit 1 and the expansion tank 2 may be made from any suitable materials, such as for example plastic materials, composite materials, or metallic materials. The component housing unit 1 may be attached to the expansion tank 2 through for example gluing or welding, or alternative by using screws, rivets or other suitable alternative fastening means. The first thermal control loop 3a and the second thermal control loop 3b are connected to the component housing unit 1, and the thermal control loops are connecting the component housing unit 1 to the respective vehicle units with conduits, pipes or other suitable connection means. The valve inlet flow ports and the pump outlets of the component housing unit 1 may be arranged with suitable connectors for the conduits or pipes of the system. The component housing unit 1 is connecting the interior volume 2c of the expansion tank 2 to the first thermal control loop 3a and the second thermal control loop 3b respectively, and the heat transfer fluid in the thermal control loops is allowed to expand into and flow out from the expansion tank 2. The component housing unit 1 comprises the first component interface 4a and the second component interface 4b. The first system component 5a is directly attached to the first component interface 4a and the first system component 5a is through the attachment to the first component interface 4a connected to the first thermal control loop 3a. The second system component 5b is directly attached to the second component interface 4b and the second system component 5b is through the attachment to the second component interface 4b connected to the second thermal control loop 3b.

[0055] In a non-illustrated embodiment, the valve unit 11 may be arranged with a third valve flow channel for the heat transfer fluid in addition to the first valve flow channel 11f and the second valve flow channel 11g. If the third valve flow channel has an X-like configuration inter-connecting all of the first valve inlet flow port 11, the second valve inlet flow port 11b, the first housing flow port 7a, and the second housing flow port 7b, the valve unit 11 is arranged in a five-way valve configuration. The third valve flow channel may be used for mixing the heat transfer fluid entering the component housing unit 1 from the first thermal control loop 3a via the first valve inlet flow port 11a and the second thermal control loop 3b via the second valve inlet flow port 11b, for further distribution of the mixed heat transfer fluid into the respective first flow channel 6a and the second flow channel 6b.

[0056] In alternative non-illustrated embodiments, the component housing unit 1 may be arranged without the valve unit if suitable, depending on the design and configuration of the system S. In further alternative non-illustrated embodiments, the component housing unit may be arranged with two or more valve units integrated within the housing structure in the same way as described in the embodiment above. One or more valve units may also be arranged in connection to the thermal control loops instead of being integrated within the component housing unit 1.

[0057] The first flow channel 6a may comprise a first air separator 12a configured for directing separated air to the expansion tank 2, and/or the second flow channel 6b comprises a second air separator 12b configured for directing separated air to the expansion tank 2. The respective air separators may be connected to the interior volume 2c of the expansion tank 2 via the tank flow ports of the component housing unit 1, and the inlet/outlet flow openings of the expansion tank 2.

[0058] In the embodiment illustrated in FIGS. 1A-1B, 2, and 3A-3B, the first flow channel 6a comprises a first air separator 12a arranged in connection to the first tank flow port 8a of the component housing unit 1. The second flow channel 6b comprises a second air separator 12b arranged in connection to the second tank flow port 8b of the component housing unit 1. The air separators may have any configuration and design.

[0059] Some vehicle thermal control systems are constructed with more than two thermal control loops, where each thermal control loop is used for heating and or cooling a specific vehicle unit or vehicle component.

[0060] In FIG. 5, an example vehicle thermal management system S is schematically illustrated, where the vehicle thermal management system has a three thermal control loop configuration. In this embodiment, the system S comprises a first thermal control loop 3a, a second thermal control loop 3b, and a further thermal control loop 15. The first thermal control loop 3a, the second thermal control loop 3b, and the further thermal control loop 15 are connected to a component housing unit 1, and the component housing unit 1 is connected to an expansion tank 2, in a similar way as described in the embodiment above. The first thermal control loop 3a and the second thermal control loop 3b may have the same configuration as described in the embodiment above. In this embodiment, the component housing unit 1 may comprise one or more valve units for distributing the heat transfer fluid in the respective thermal control loops.

[0061] The component housing unit 1 may comprise one or more further component interfaces 13 configured for direct attachment of one or more corresponding further system components 14. The one or more further component interfaces 13 may have the same configurations as the first component interface 4a and the second component interface 4b described above. The one or more further system components 14, may be any type or types of components used in the system S, such as for example circulation pumps, valves, heat exchangers, or air separators. In this way, the component housing unit 1 is configured for being connected to one or more further thermal control loops 15, and the component housing unit 1 is configured for connecting the interior volume 2c of the expansion tank 2a to the one or more further thermal control loops 15. With such a system configuration, the component housing unit 1 comprises one or more further component interfaces 13 and the system S further comprises one or more corresponding further system components 14, where the one or more further system components 14 are directly attached to the one or more further component interfaces 13. With direct attachment is meant that the system components are directly attached to the component interfaces of the component housing unit 1 without any intermediate hoses or other types of intermediate members. With such a direct attachment, the system can be designed with fewer components for saving space and weight. It should however be understood that gaskets or similar sealing members may be arranged in connection to the component housing unit 1 between the system components and the corresponding component interfaces.

[0062] In the embodiment illustrated in FIG. 5, the system S further comprises one further thermal control loop 15 in addition to the first thermal control loop 3a and the second thermal control loop 3b, and one further system component 14 is connected to the further thermal control loop 15. The component housing unit 1 is thus connecting the interior volume 2c of the expansion tank 2 to the further thermal control loop 15. The further system component 14 may be any type of component used in the system S, such as for example a circulation pump, a valve, a heat exchanger, or an air separator. The further component interface 13 is provided with suitable connection means for direct attachment of the further system component 14. The connection means of the further component interface 13 is as described above designed to cooperate with corresponding matching connection means arranged on the further system component and any suitable type of connection means may be used, such as for example screw or threaded connectors, bayonet connectors, and plug-in connectors with locking means for holding the system component connected to the corresponding component interface. Through the connection means, the system components 5a, 5b, 14 are removably attached to their corresponding component interfaces 4a, 4b, 13, for simple maintenance or exchange of components. Each component interface may for example be provided with a set of first threads, and each of the system components may be provided with a corresponding cooperating set of second threads. The system components may with this configuration be threaded into their corresponding component interfaces for efficient attachment and removal of the system components to the component housing unit 1.

[0063] In the embodiment illustrated in FIG. 5, the first thermal control loop 3a is connected to a first vehicle unit A, the second thermal control loop 3b is connected to a second vehicle unit B, and the further thermal control loop 15 is connected to a third vehicle unit C. The first vehicle unit A may for example be a battery temperature regulating unit, the second vehicle unit B may for example be a power electronics temperature regulating unit, and the third vehicle unit C for example be an internal combustion engine in a hybrid vehicle powertrain. The battery temperature regulating unit may for example be used for controlling the temperatures of one or more batteries with related components used in the vehicle system. The power electronics temperature regulating unit may for example be used for controlling the temperatures of the power electronic components, such as the electric motor and other electric components being part of the power electronic system. The further thermal control loop 15 is used for controlling the temperature of the internal combustion engine constituting the third vehicle unit C.

[0064] The thermal control loop configurations and components may be of any conventional type used for vehicle purposes, and will not be described in detail. It should however be understood that the system S may be used for heating or cooling other types of vehicle units or components than the ones described above, depending on the design and construction of the vehicle and the vehicle systems. It should be understood that the respective control loops may include any suitable number of components for controlling the temperature ranges and the flow of heat transfer fluid, such as for example heat exchangers, chillers, heaters, filters, air separators, connectors, fans, valves, circulation pumps, and/or any other components known in the art as related to such thermal systems.

[0065] It will be appreciated that the above description is merely exemplary in nature and is not intended to limit the present disclosure, its application or uses. While specific examples have been described in the specification and illustrated in the drawings, it will be understood by those of ordinary skill in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the scope of the present disclosure as defined in the claims. Furthermore, modifications may be made to adapt a particular situation or material to the teachings of the present disclosure without departing from the essential scope thereof. Therefore, it is intended that the present disclosure not be limited to the particular examples illustrated by the drawings and described in the specification as the best mode presently contemplated for carrying out the teachings of the present disclosure, but that the scope of the present disclosure will include any embodiments falling within the foregoing description and the appended claims. Reference signs mentioned in the claims should not be seen as limiting the extent of the matter protected by the claims, and their sole function is to make claims easier to understand.

REFERENCE SIGNS

[0066] 1: Component housing unit [0067] 2: Expansion tank [0068] 2a: Exterior surface [0069] 2b: Interior surface [0070] 2c: Interior volume [0071] 2d: First tank section [0072] 2e: Second tank section [0073] 2f: Fill opening [0074] 3a: First thermal control loop [0075] 3b: Second thermal control loop [0076] 4a: First component interface [0077] 4b: Second component interface [0078] 5a: First system component [0079] 5b: Second system component [0080] 6a: First flow channel [0081] 6b: Second flow channel [0082] 7a: First housing flow port [0083] 7b: Second housing flow port [0084] 8a: First tank flow port [0085] 8b: Second tank flow port [0086] 9a: First inlet/outlet flow opening [0087] 9b: Second inlet/outlet flow opening [0088] 10a: First circulation pump [0089] 10b: Second circulation pump [0090] 10c: First pump outlet [0091] 10d: Second pump outlet [0092] 11: Valve unit [0093] 11a: First valve inlet flow port [0094] 11b: Second valve inlet flow port [0095] 11c: Valve housing [0096] 11d: Valve member [0097] 11e: Valve actuator [0098] 11f: First valve flow channel [0099] 11g: Second valve flow channel [0100] 12a: First air separator [0101] 12b: Second air separator [0102] 13: Further component interfaces [0103] 14: Further system components [0104] 15: Further thermal control loops [0105] 16a: First threads [0106] 16b: Second threads [0107] A: First vehicle unit [0108] B: Second vehicle unit [0109] C: Third vehicle unit [0110] S: Vehicle thermal management system