Electric vehicle battery coolant heater assembly with electrical connection through gasket
11611122 · 2023-03-21
Assignee
Inventors
Cpc classification
B60K2001/008
PERFORMING OPERATIONS; TRANSPORTING
F28F3/12
MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
F28F9/0219
MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
H01M10/6556
ELECTRICITY
Y02T10/70
GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
Y02E60/10
GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
H01M2220/20
ELECTRICITY
B60L50/64
PERFORMING OPERATIONS; TRANSPORTING
International classification
F28F3/12
MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
F28F9/02
MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
Abstract
A battery coolant heater assembly including a coolant manifold having liquid coolant pathways and a heat transfer surface for transferring heat to liquid coolant flowable within the coolant manifold, an electric heater element thermally contacted to the heat transfer surface of the manifold, and a cover sealably enclosing the heating element between the heat transfer surface and the cover via a gasket. The electric heater element is electrically connected via an electrical connector extending through and formed integrally with the gasket.
Claims
1. A battery coolant heater assembly comprising: a coolant manifold having liquid coolant pathways and at least one heat transfer surface for transferring heat to liquid coolant flowable within the coolant manifold; at least one electric heater element thermally contacted to the at least one heat transfer surface; at least one electrical connector formed integrally with a gasket and configured to provide electrical energy to the at least one electrical heater element; and a cover sealably enclosing the at least one heating element between the at least one heat transfer surface and the cover via the gasket positioned therebetween, the at least one electric heater element electrically connected to the at least one electrical connector extending through and formed integrally with the gasket, wherein the at least one electrical connector extends from outside of an area sealably enclosed by the cover, the gasket, and the at least one heat transfer surface of the coolant manifold, to inside of the area sealably enclosed by the cover, the gasket, and the at least one heat transfer surface of the coolant manifold.
2. The assembly of claim 1, wherein the coolant manifold includes a gasket mounting substrate circumscribing an area of the heat transfer surface and the electric heater element thermally contacted thereto.
3. The assembly of claim 2, wherein the gasket is positioned upon the gasket mounting substrate so as to fully circumscribe the area of the heat transfer surface and the electric heater element contacted thereto, and wherein the cover includes a gasket engaging surface sized to match the gasket and sealably engage with the gasket and the gasket mounting substrate there below.
4. The assembly of claim 1, wherein the cover, due to electrical conductors extending through the at least one gasket-integral electrical connector extending through and formed integrally with the gasket, is free from any through hole for providing power or electrical signals to the at least one heating element, such that a depth of the cover is decreased.
5. The assembly of claim 1, wherein the gasket includes a carrier rail, the carrier rail having a pair of sides and a channel depression between the carrier rail sides.
6. The assembly of claim 5, wherein the gasket includes a molded-in harness mating connector shroud, the molded-in harness mating connector shroud molded into an outside edge of the gasket leaving the carrier rail oriented inward from the molded-in harness mating connector so that the molded-in harness matting connector shroud is exposed outside of space enclosed by the cover when sealably enclosing the at least one heating element between the at least one heat transfer surface and the cover.
7. The assembly of claim 5, wherein an integrated or cure-in-place sealing bead is positioned within the channel depression of the carrier rail.
8. The assembly of claim 6, wherein metallic pin circuitry extends between electrical conductors exposed and oriented within the molded-in harness mating connector shroud through the carrier rail so that ends of the electrical conductors opposite the connector shroud are positioned within the space enclosed by the cover when sealably enclosing the at least one heating element, with the metallic pic circuitry adapted for providing electrical power or electrical signals to the at least one heating element.
9. The assembly of claim 8, wherein the electrical conductors positioned within the space are adapted with spade terminal connectors for electrical connection with correspondingly mating spade terminal connectors of the at least one heating element.
10. The assembly of claim 9, wherein the electrical conductors positioned with in the space are adapted with wire conductors for electrical connection with the at least one heating element.
11. A battery coolant heater assembly comprising: a coolant manifold having liquid coolant pathways and at least one heat transfer surface for transferring heat to liquid coolant flowable within the coolant manifold; at least one electric heater element thermally contacted to the at least one heat transfer surface; and a cover sealably enclosing the at least one heating element between the at least one heat transfer surface and the cover via a gasket between the cover and the at least one heat transfer surface, the at least one electric heater element electrically connected to at least one electrical connector extending through and formed integrally with the gasket, wherein the gasket includes a carrier rail, the carrier rail having a pair of sides and a channel depression between the carrier rail sides.
12. The assembly of claim 11, wherein the gasket includes a molded-in harness mating connector shroud, the molded-in harness mating connector shroud molded into an outside edge of the gasket leaving the carrier rail oriented inward from the molded-in harness mating connector so that the molded-in harness matting connector shroud is exposed outside of space enclosed by the cover when sealably enclosing the at least one heating element between the at least one heat transfer surface and the cover.
13. The assembly of claim 11, wherein an integrated or cure-in-place sealing bead is positioned within the channel depression of the carrier rail.
14. The assembly of claim 12, wherein metallic pin circuitry extends between electrical conductors exposed and oriented within the molded-in harness mating connector shroud through the carrier rail so that ends of the electrical conductors opposite the connector shroud are positioned within the space enclosed by the cover when sealably enclosing the at least one heating element, with the metallic pic circuitry adapted for providing electrical power or electrical signals to the at least one heating element.
15. The assembly of claim 14, wherein the electrical conductors positioned within the space are adapted with spade terminal connectors for electrical connection with correspondingly mating spade terminal connectors of the at least one heating element.
16. The assembly of claim 15, wherein the electrical conductors positioned with in the space are adapted with wire conductors for electrical connection with the at least one heating element.
17. A gasket with at least one integral electrical connector adapted for a battery coolant heater assembly, the gasket comprising: a gasket seal adapted to sealably enclose at least one battery coolant heating element between at least one heat transfer surface of a battery coolant manifold having liquid coolant pathways therewithin and a cover; and at least one electrical connector extending through and formed integrally with the gasket seal so as to provide power or electric signals to the at least one battery coolant heating element sealably enclosed within a space between the cover and the at least one heat transfer surface of the battery coolant manifold.
18. The gasket of claim 17, wherein the gasket seal includes a carrier rail, the carrier rail having a pair of sides and a channel depression between the carrier rail sides.
19. The gasket of claim 18, wherein the gasket includes a molded-in harness mating connector shroud, the molded-in harness mating connector shroud molded into an outside edge of the gasket seal leaving the carrier rail oriented inward from the molded-in harness mating connector so that the molded-in harness matting connector shroud is exposed outside of the space enclosed by the cover when sealably enclosing the at least one heating element between the at least one heat transfer surface and the cover.
20. The gasket of claim 19, wherein an integrated or cure-in-place sealing bead is positioned within the channel depression of the carrier rail.
Description
BRIEF DESCRIPTION OF THE DRAWINGS
(1) The accompanying drawings are incorporated herein as part of the specification. The drawings described herein illustrate embodiments of the presently disclosed subject matter, and are illustrative of selected principles and teachings of the present disclosure. However, the drawings do not illustrate all possible implementations of the presently disclosed subject matter, and are not intended to limit the scope of the present disclosure in any way.
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(8) Similar reference numerals may have been used in different figures to denote similar components.
DETAILED DESCRIPTION
(9) It is to be understood that the invention may assume various alternative orientations and step sequences, except where expressly specified to the contrary. It is also to be understood that the specific assemblies and systems illustrated in the attached drawings, and described in the following specification are simply exemplary embodiments of the inventive concepts defined herein. Hence, specific dimensions, directions or other physical characteristics relating to the embodiments disclosed are not to be considered as limiting, unless expressly stated otherwise. Also, although they may not be, like elements in various embodiments described herein may be commonly referred to with like reference numerals within this section of the application.
(10) As an overview,
(11) Although the embodiments may be described in detail in the context of an electric vehicle battery coolant heater assembly, various embodiments and/or various aspects of the embodiments described may be separable and may be applied in other electric vehicle components, other vehicle components for non-electric vehicles, or other components for non-automotive applications. For example, aspects of the embodiments described, or aspects of portions of those embodiments, may be applied to a component having an electrical component sealably enclosed between a cover and a component mounting/attachment substrate (to which the electrical component is mounted/attached), with a power/signal pass-through configuration that is integrated into the sealing gasket between the cover and component/attachment substrate. As another example, aspects of the embodiments described, such as the substantially planar cover opening with correspondingly substantially planar sealing gasket and substantially planar component mounting/attachment substrate surfaces (arranged in parallel to one another), may be formed with different geometries. For example, the cover opening, gasket, and component mounting/attachment substrate may not be substantially planar (as shown and described) but may be, instead, comprise matingly corresponding non-planar shapes that are configured to sealably attach to one another to provide a sealable enclosure for the enclosed electrical component.
(12) The exploded perspective view shown in
(13) The cover 102, as shown, includes a depth (or height) between lower edge 136 and top surface 138 that is no less than the depth-wise dimension 126-124 of a separate harness connector 118. The depth-wise dimension 126-124 of the separate harness connector 118 extends from a lower end 126 to an upper end 124. The harness connector 118 includes a harness connector gasket 120 and a length of wire 122 extending from the harness connector gasket 120.
(14) The length of wire 122 is shown in
(15) The electrical component 106 preferably comprises one or more heating elements, and the one or more heating elements may comprise various layers 114, 112, 110 and associated electrical circuitry and connections 116. In various embodiments, the electrical component 106 comprises at least one heating element adapted to contact a heat transfer surface 154 of the coolant manifold 108. In one embodiment, the at least one heating element comprises a substantially planar component that is sized and configured to be thermally coupled to the heat transfer surface 154. In one embodiment, the layers and components 110, 112, 114, and 116 combine to form at least one heating element comprising the electrical component 106.
(16) The coolant manifold 108, as shown, comprises coolant flow ports 146 and 144 for receiving coolant fluid (heating fluid) into fluid paths within the manifold and exhausting coolant fluid into the electric vehicle battery coolant system (not shown). An auxiliary port 152 may be provided, which may be used for draining the coolant manifold (for example, during maintenance) or for charging (introducing coolant) or for bleeding air from the manifold and/or battery coolant system. Also as shown in
(17) Turning now to
(18) The cover 202, as shown in
(19) The gasket 212 preferably comprises a molded or formed material sized and adapted to permit sealably enclosing the cover 202 and corresponding surfaces of the component mounting/attachment substrate, or coolant manifold 214. The gasket 212 preferably comprises a molded-in integral connector or molded-in harness mating connector shroud 216 having electrical conductors that extend from within the molded-in connector shroud 216 through the sealing portion of the gasket and continuing into the space enclosed by the cover and component mounting/attachment substrate or coolant manifold 214.
(20) As shown in
(21) Various aspects and embodiments of the gasket 212 are described in greater detail with respect to
(22) The carrier rail 302, in some embodiments, comprises a molded plastic carrier rail. In some embodiments, the gasket 300 comprises a carrier rail 302 and molded-in harness mating connector shroud 216 both made of molded or formed plastic, for example, injection molded plastic resin. The carrier rail 302 preferably comprises an inner rail 318 and an outer rail 320, with a channel depression 304 therebetween. The channel depression is sized to have a width and depth sufficient to accommodate an integrated or cure-in-place sealing bead (between the rails). The sealing bead is preferably adapted to provide fluid sealing between correspondingly mating surfaces of the cover 202 and coolant manifold 214. The carrier rail 302, channel depression, and sealing bead are preferably constructed so as to comprise two rails and a sealing bead there between for engagement with sealing surfaces of the cover and, identically, two rails and a sealing bead there between for engagement with engaging sealing surfaces of the component mounting/attachment substrate or coolant manifold. That is, the gasket rail 302 preferably comprises a symmetrical configuration whereby the rail structure engaging the sealing surfaces of the cover is the same (and mirror opposite in orientation) as the rail structure engaging the sealing surfaces of the coolant manifold.
(23) Exemplary dimensions for the gasket 300 comprise a widthwise dimension 404 between outer edges 306 and 308 of approximately 110 mm, and a lengthwise dimension 402 from the (far) end/edge 310 to an outward most edge 328 of the molded-in connector shroud 216.
(24) As shown in
(25) The gasket, in various embodiments, may comprise other electrical configurations. For example,
(26) Other types of electrical connectors and conductors may be used. For example, the molded-in connector 216 is shown and described as a connector shroud within which flat metal electrical conductors extend outward away from the carrier rail of the gasket. However, in other embodiments, not shown, the molded-in connector shroud may comprise a connector shroud structure (and electrical conductor configuration) defined by customer harness connection requirements. For example, the molded-in shroud may comprise molded-in key notch structure, material thickness, electrical conductor width and thickness, etc. as defined by a particular customer's harness connection requirements. Likewise, configurations for electrical connection of the heating element or electrical component within the to-be-sealed enclosure may comprise spade type pins (such as the male spade (blade) terminals 222 and 224 shown in
(27) As described in various embodiments, a battery coolant heater assembly comprises: a coolant manifold having liquid coolant pathways and at least one heat transfer surface for transferring heat to liquid coolant flowable within the coolant manifold; at least one electric heater element thermally contacted to the at least one heat transfer surface; and a cover sealably enclosing the at least one heating element between the at least one heat transfer surface and the cover via a gasket between the cover and the at least one heat transfer surface, the at least one electric heater element electrically connected to at least one electrical connector extending through and formed integrally with the gasket. The coolant manifold may include a gasket mounting substrate circumscribing an area of the heat transfer surface and the electric heater element thermally contacted thereto. The gasket may be positioned upon the gasket mounting substrate so as to fully circumscribe the area of the heat transfer surface and the electric heater element positioned therein.
(28) The cover preferably includes a gasket engaging surface sized to match the gasket and sealably engage with the gasket and the gasket mounting substrate there below. In one embodiment, the cover, due to electrical conductors extending through the at least one gasket-integral electrical connector extending through and formed integrally with the gasket, is free from any through hole sized and adapted to receive a non-gasket-integral electrical harness connector for providing power or electrical signals to the at least one heating element, such that a depth of the cover is decreased by at least a portion of a depth-wise dimension of the non-gasket-integral electrical harness connector.
(29) In one embodiment, the gasket includes a carrier rail, wherein the carrier rail includes a pair of sides and a channel depression between the carrier rail sides. In one embodiment, the gasket includes a molded-in harness mating connector shroud, with the molded-in harness mating connector shroud molded into an outside edge of the gasket leaving the carrier rail oriented inward from the molded-in harness mating connector so that the molded-in harness matting connector shroud is exposed outside of space enclosed by the cover when sealably enclosing the at least one heating element between the at least one heat transfer surface and the cover. Preferably, an integrated or cure-in-place sealing bead is positioned within the channel depression of the carrier rail.
(30) In some embodiments, metallic pin circuitry extends between electrical conductors exposed and oriented within the molded-in harness mating connector shroud through the carrier rail so that ends of the electrical conductors opposite the connector shroud are positioned within the space enclosed by the cover when sealably enclosing the at least one heating element, with the metallic pic circuitry adapted for providing electrical power or electrical signals to the at least one heating element. In one embodiment, the electrical conductors positioned within the space are adapted with spade terminal connectors for electrical connection with correspondingly mating spade terminal connectors of the at least one heating element. In one embodiment, the electrical conductors positioned with in the space are adapted with wire conductors for electrical connection with the at least one heating element.
(31) As described with respect to various embodiments, a method of assembling an electric vehicle battery coolant heater assembly is provided, the method comprising: providing a coolant manifold including liquid coolant pathways and at least one heat transfer surface for transferring heat to liquid coolant flowable within the coolant manifold, at least one electric heater element thermally contactable to the at least one heat transfer surface, and a cover for sealably enclosing the at least one heating element between the at least one heat transfer surface and the cover via a gasket between the cover and the at least one heat transfer surface, the at least one electric heater element electrically connectable to at least one electrical connector extending through and formed integrally with the gasket; placing the at least one electric heater element upon the at least one heat transfer surface so that the at least one electric heater element is thermally contacted to the at least one heat transfer surface and heat transferable from the at least one heater element is transferable to the liquid coolant flowable within the coolant manifold; placing the gasket with the at least one integral electrical connector on the coolant manifold so as to circumscribe the at least one heater element and the at least one heat transfer surface there below; connecting electrical conductors extending from the at least one electrical connector extending through and formed integrally with the gasket with corresponding mating electrical connections of the at least one heater element; and placing the cover upon the gasket and sealably enclosing the at least one heating element between the at least one heat transfer surface and the cover.
(32) In one embodiment, the method includes the coolant manifold having a gasket mounting substrate circumscribing an area of the heat transfer surface and the electric heater element thermally contacted thereto. In one embodiment, the method includes the gasket being positioned upon the gasket mounting substrate so as to fully circumscribe the area of the heat transfer surface and the electric heater element positioned therein. In one embodiment, the method includes the cover having a gasket engaging surface sized to match the gasket and sealably engage with the gasket and the gasket mounting substrate there below.
(33) In one embodiment, the method includes that the cover, due to electrical conductors extending through the at least one gasket-integral electrical connector extending through and formed integrally with the gasket, is free from any through hole sized and adapted to receive a non-gasket-integral electrical harness connector for providing power or electrical signals to the at least one heating element, such that a depth of the cover is decreased by at least a portion of a depth-wise dimension of the non-gasket-integral electrical harness connector.
(34) As described with respect to various embodiments, a gasket with at least one integral electrical connector adapted for a battery coolant heater assembly comprises: a gasket seal adapted to sealably enclose at least one battery coolant heating element between at least one heat transfer surface of a battery coolant manifold having liquid coolant pathways therewithin and a cover; and at least one electrical connector extending through and formed integrally with the gasket seal so as to provide power or electric signals to the at least one battery coolant heating element sealably enclosed within a space between the cover and the at least one heat transfer surface of the battery coolant manifold. In one embodiment, the gasket seal includes a carrier rail, the carrier rail having a pair of sides and a channel depression between the carrier rail sides. In one embodiment, the gasket includes a molded-in harness mating connector shroud, the molded-in harness mating connector shroud molded into an outside edge of the gasket seal leaving the carrier rail oriented inward from the molded-in harness mating connector so that the molded-in harness matting connector shroud is exposed outside of the space enclosed by the cover when sealeably enclosing the at least one heating element between the at least one heat transfer surface and the cover. Preferably, an integrated or cure-in-place sealing bead is positioned within the channel depression of the carrier rail.
(35) The present inventors determined that a component cover such as the cover 202 in the assembly described with respect to
(36) The technical effect of redesigning the cover of the battery coolant heater assembly as described herein, to eliminate the separate harness connector and structures required therefor, and integrating a molded-in connector and electrical power/signal pass-through into the gasket sealing the cover tot the coolant manifold, results in a reduced size assembly (requiring less (cover) material) having fewer required components, an easier to manufacture assembly (requiring less and simplified labor for manufacturing/assembling the unit) (i.e., simplified/improved manufacturability), and an assembly having fewer potential leak points (due to elimination of the need for through hole in the cover and a separate harness connector).
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(38) Certain adaptations and modifications of the described embodiments can be made. Therefore, the above discussed embodiments are considered to be illustrative and not restrictive. The present disclosure is not to be limited in scope by the specific embodiments described herein. Further example embodiments may also include all of the steps, features, compositions and compounds referred to or indicated in this description, individually or collectively and any and all combinations or any two or more of the steps or features.
(39) Throughout this document, the use of the word “a” or “an” when used in conjunction with the term “comprising” in the claims and/or the specification may mean “one”, but it is also consistent with the meaning of “one or more”, “at least one”, and “one or more than one”. Similarly, the word “another” may mean at least a second or more. The words “comprising” (and any form of comprising, such as “comprise” and comprises), “having” (and any form of having, such as “have” and “has”), “including” (and any form of including, such as “include” and “includes”) or “containing” (and any form of containing, such as “contain” and “contains”), are inclusive or open-ended and do not exclude additional, unrecited elements or process steps.
(40) In the present specification and in the appended claims, various terminology which is directional, geometrical and/or spatial in nature such as “longitudinal”, “horizontal”, “front”, “forward”, “backward”, “back”, “rear”, “upwardly”, “downwardly”, etc. is used. It is to be understood that such terminology is used for ease of description and in a relative sense only and is not to be taken in any way as specifying an absolute direction or orientation.
(41) The embodiments described herein may include one or more range of values (for example, size, displacement and field strength etc.). A range of values will be understood to include all values within the range, including the values defining the range, and values adjacent to the range that lead to the same or substantially the same outcome as the values immediately adjacent to that value which defines the boundary to the range. For example, a person skilled in the field will understand that a 10% variation in upper or lower limits of a range can be totally appropriate and is encompassed by the disclosure. More particularly, the variation in upper or lower limits of a range will be 5% or as is commonly recognized in the art, whichever is greater.
(42) Throughout this specification relative language such as the words ‘about’ and ‘approximately’ are used. This language seeks to incorporate at least 10% variability to the specified number or range. That variability may be plus 10% or negative 10% of the particular number specified.