CHARGING POLE

Abstract

The invention relates to a method for generating and delivering charging current for an electric vehicle in a charging pole, comprising the steps of generating kinetic energy, feeding a first generator with the generated kinetic energy, feeding a second generator with the generated kinetic energy, converting the generated kinetic energy into electrical energy by means of the first generator, and converting the generated kinetic energy into electrical energy by means of the second generator.

Claims

1. A process for generating and delivering charging current for an electric vehicle in a charging pole, comprising the following process steps generating kinetic energy with an energy conversion unit feeding a first generator with the generated kinetic energy converting the generated kinetic energy into electrical energy by means of the first generator characterised in that a second generator is fed with the generated kinetic energy, and the generated kinetic energy is converted into electrical energy by means of the second generator.

2. The process for generating and delivering charging current for an electric vehicle in a charging pole according to claim 1 characterised in that the first generator produces an electric current with a voltage greater than 100V.

3. The process for generating and delivering charging current for an electric vehicle in a charging pole according to claim 2 characterised in that the second generator produces an electric current with a voltage lower than 250V.

4. The process for generating and delivering charging current for an electric vehicle in a charging pole according to claim 1, characterised in that 80%, preferably 90% and particularly preferably 100% of the electricity generated by the first generator is used for charging an electric vehicle.

5. The process for generating and delivering charging current for an electric vehicle in a charging pole according to claim 1, characterised in that the electricity generated by the second generator is used to charge an energy storage device associated in the charging pole.

6. The process for generating and delivering charging current for an electric vehicle in a charging pole according to claim 5 characterised in that the battery is located in the charging pole.

7. The process for generating and delivering charging current for an electric vehicle in a charging pole according to claim 1, characterised in that the first generator is fed with the generated kinetic energy via a first coupling device.

8. The process for generating and delivering charging current for an electric vehicle in a charging pole according to claim 1, characterised in that the second generator is fed with the generated kinetic energy via a second coupling device.

9. The process for generating and delivering charging current for an electric vehicle in a charging pole according to claim 8 characterised in that the second coupling device is arranged separately from the first coupling device.

10. The process for generating and delivering charging current for an electric vehicle in a charging pole according to claim 8 characterised in that the first generator is coupled to the energy conversion device via the first coupling device and the second generator is coupled to the energy conversion device via the second coupling device.

11. The process for generating and delivering charging current for an electric vehicle in a charging pole according to claim 1 characterised in that the power generated by the second generator is used to operate an HMI unit, a controller and/or a communication unit, wherein the HMI unit, the controller and/or the communication unit are arranged in the charging pole.

12. The process for generating and delivering charging current for an electric vehicle in a charging pole according to claim 1, characterised in that the electricity generated by the second generator is used for charging an electric vehicle.

13. A charging pole suitable and intended for charging electric vehicles, comprising a first energy conversion unit a first generator connected to the energy conversion unit characterised in that a second generator is connected to the energy conversion unit.

14. The charging pole suitable and intended for charging electric vehicles, according to claim 13 characterised in that the first generator and the second generator are connected to the energy conversion unit via separate linking elements.

15. The charging pole suitable and intended for charging electric vehicles according to claim 13 characterised in that the first generator is connected to the charging cable terminal via a power line suitable and intended to conduct the generated current.

16. The charging pole suitable and intended for charging electric vehicles according to claim 15 characterised in that the first generator is connected to one or more charging cable terminals exclusively via one or more power lines suitable and intended to conduct the generated current.

17. The charging pole suitable and intended for charging electric vehicles according to claim 15 characterised in that a first rectifier is connected between the first generator and the charging cable connection.

18. The charging pole suitable and intended for charging electric vehicles according to claim 13 characterised in that the second generator is connected to a battery via a power line suitable and intended to conduct the generated current.

19. The charging pole suitable and intended for charging electric vehicles according to claim 18 characterised in that a second rectifier is connected between the second generator and the battery.

20. The charging pole suitable for charging electric vehicles and intended therefor, according to claim 13 characterised in that the battery is connected to the energy conversion unit via a power line, the power line being intended and suitable for supplying electrical energy to the energy conversion unit.

21. The charging pole suitable for charging electric vehicles and intended therefor, according to claim 13 characterised in that the second generator is connected to an HMI unit, a communication unit and/or a controller via a power line suitable and intended to conduct the generated current.

22. The charging pole suitable for charging electric vehicles and intended therefor, according to claim 13 characterised in that the battery is connected to the first rectifier via an inverter and a power line.

23. The charging pole suitable for charging electric vehicles and intended therefor, according to claim 13 characterised in that the battery is connected to the charging cable connection via a DC converter and a power line.

24. The charging pole suitable for charging electric vehicles and intended therefor, according to claim 13 characterised in that the first generator is intended and suitable for generating current with a voltage greater than 100V.

25. The charging pole suitable for charging electric vehicles and intended therefor, according to claim 13 characterised in that the second generator is intended and suitable for generating current with a voltage lower than 250V, e.g. 220V domestic current.

Description

SHOWING

[0038] FIG. 1: An example of the charging pole according to the invention.

[0039] FIG. 2: A diagram of an example of energy distribution during the charging process.

[0040] FIG. 3: A further example of the charging pole according to the invention.

[0041] FIG. 4: A diagram of another embodiment of the energy distribution during the charging process.

[0042] FIG. 5: Another example of the charging pole according to the invention.

[0043] FIG. 6: A diagram of another embodiment of the energy distribution during the charging process.

[0044] FIG. 7: Another example of the charging pole according to the invention.

[0045] FIG. 1 shows a schematic view of the charging pole 1 according to the invention with representation of the connections by means of power lines between the components within the charging pole 1. In this embodiment example, the charging pole 1 according to the invention has a nominal power of 150 kW, i.e. an electric vehicle can be charged with 150 kW charging power. In the charging pole 1, in this embodiment example, the electrical energy for delivery to an electric vehicle is generated by a combustion engine M as an energy conversion unit. The combustion engine M is here a piston combustion engine with a shaft power of 180 kW, but other designs such as a Wankel engine or turbine are also possible. The combustion engine M is advantageously operated with methanol or ethanol or a mixture of methanol and ethanol. The fuels can be produced in a climate-neutral way, e.g. from vegetable raw materials, and their storage and handling is comparable to the storage of conventional petrol and therefore does not require any extraordinary safety measures for safe storage and transport.

[0046] Such a fuel typically has a usable energy content of 6.28 kWh/I and is the primary energy source of the charging pole 1. The fuel is stored in the charging pole 1 in a tank T. The combustion engine M is connected to the first generator GE1 via the first linking element KE1. The linking element KE1 usually has a disengageable clutch and a toothed belt. A connection by V-belt or chain is also possible. The first generator GE1 is advantageously a three-pole three-phase synchronous generator self-excited by permanent magnets. Such a generator does not require any energy to generate the magnetic field and therefore has a higher efficiency of approx. 98% compared to externally excited generators. In addition, a synchronous generator can produce a specifically adjustable power to compensate for the reactive power that inevitably occurs in the charging pole 1.

[0047] The combustion engine M drives the first generator GE1 by rotation. The kinetic energy generated by the combustion engine M is thus converted by the first generator GE1 into electrical energy, into an alternating current. The first generator GE1 generates an electrical power of 150 kW at a voltage of more than 100V according to the invention, 400V in this and the following embodiment examples. The alternating current generated by the generator GE1 is converted into a direct current in the rectifier GR1. The combustion engine M is connected to a second generator GE2 via the second linking element KE2, which is arranged separately from the first linking element KE1. The second linking element KE2 has a low-maintenance belt drive without a clutch. The second generator GE2 is also driven like the first generator GE1 by rotation of the combustion engine M, the kinetic energy of the combustion engine M is converted into electrical energy. Like the first generator GE1, the second generator GE2 is a self-excited synchronous generator with high efficiency. The second generator GE2 generates a direct current with a voltage of up to 250V according to the invention, in this embodiment example of 24V.

[0048] The HMI unit H has a display and operating terminal on which the data important to a user, such as charging current, charging duration and costs of the charging process, are called up and displayed. In addition, a user can initiate or end the charging process and pay. Various payment systems are possible, e.g. via different credit cards. Other payment systems are also possible, e.g. via a mobile end device (smartphone). The rechargeable battery B (battery) has a capacity of 50 kWh and is charged by the second generator GE2 during the charging of the electric vehicle. At the same time, the battery B supplies the control unit S, the communication unit K and the HMI unit H with electrical energy for operation as well as the combustion engine M with electrical energy for starting and operation.

[0049] The charging pole 1 also has the connection device A for one or more charging cables with which an electric vehicle to be charged is charged. The charging cable also has a data line that establishes a data connection between the control unit S and the electric vehicle. Communication with the battery of the electric vehicle to be charged is established via the data line and the required data such as state of charge, charging voltage and charging current are queried. The control unit S sets the parameters of the charging current on the basis of this data. The charging pole 1 is connected to the operator of the charging pole 1 and a plurality of other charging poles via the communication unit K, which establishes an internet connection, e.g. with a cloud storage.

[0050] All these charging pole 1 components mentioned here—tank T, combustion engine M, the linking elements KE1, KE2, first generator GE1, second generator GE2, rectifier GR, connection device A, battery B, HMI unit H, communication unit K, control unit S—are advantageously arranged in the charging pole 1 itself. For this purpose, the charging pole 1 has a housing that protects the components inside the charging pole 1 from the effects of the weather and damage.

[0051] The process for generating and charging an electric vehicle begins with the generation of kinetic energy by the energy conversion unit, in this embodiment the combustion engine M. Up to this point, the charging pole 1 is in stand-by mode, in which only the control unit S, the communication unit K and the HMI unit H are operational. These units H, K, S are supplied with electrical energy by the battery B. The control unit S, the communication unit K and the HMI unit H require 70 W for stand-by operation.

[0052] The process according to the invention is initiated by a starting process, in this embodiment example by connecting the charging cable to the electric vehicle to be charged. By means of a plug-in connection, charging pole 1 and electric vehicle are connected through the charging cable connected to connection device A. The starting process puts the charging pole 1 into an operating state. For this purpose, the energy conversion process is started first. A starting device installed on the combustion engine M starts the combustion engine M, which is supplied with fuel from the tank T. The starting device is connected to the charging cable. An electrical power of 500 W is required for the start and operation of the combustion engine M, which is provided by the battery B.

[0053] The procedure according to the invention can also be initiated by sensors, e.g. a radar sensor, which detects the electric vehicle to be charged at the parking space assigned to the charging pole 1. It is also possible for a user to pre-announce by means of a mobile end device, e.g. a smartphone with a suitable app, that the procedure according to the invention will start in a specified time window. A combination of the aforementioned possibilities is also conceivable. The first generator GE1 coupled to the combustion engine M is driven by the kinetic energy of the combustion engine M and generates electrical energy. This electrical energy generated by the first generator GE1 is used exclusively and 100% for charging the electric vehicle. In alternative applications, part of the energy generated by the first generator GE1 can also be used to charge the energy storage device. The second generator GE2, which is also coupled to the combustion engine M, is also driven by the kinetic energy of the combustion engine M and generates electrical energy. This electrical energy generated by the second generator GE2 is used to charge the energy storage device located in the charging pole 1 and to operate the HMI unit H, the control unit S and the communication unit K during the charging of the electric vehicle. Thereafter, the process of charging the electric vehicle is performed by the electric energy generated by the generator GE1. Typically, a user gives a start command for charging via the HMI unit H. The electric vehicle is supplied with electrical energy by the charging pole 1 through the charging cable connected to the connection device A, in this embodiment example with a maximum of 150 kW. After the electric vehicle has been charged, the energy conversion process is terminated, the combustion engine M is stopped and the process of charging the electric vehicle is terminated. No more electrical energy flows from the charging pole 1 to the electric vehicle. The charging pole 1 is returned to stand-by mode.

[0054] An embodiment example of the energy flow during the charging process between the components of the charging pole 1 is shown in FIG. 2. The combustion engine M as an energy conversion unit generates a nominal power of 180 kW, which is transmitted to the generators GE1 and GE2. The first generator GE1 generates an electric current with the power of 150 kW, the second generator GE2 generates a current power of 6 kW. The 30 kW of electric power generated by the second generator GE2 is sent to battery B to charge it. With 70 W of the power generated by the first generator GE1, power is supplied to control unit S, communication unit K and HMI unit H. Therefore, 150 kW enters the rectifier GR. The alternating current generated by the first generator GE1 is converted into a direct current in the rectifier GR. The direct current (150 kW) generated by rectifier GR is fed into the charging cable located at connection device A. The battery B with a capacity of 50 kWh supplies the control unit S, the communication unit K and the HMI unit H with a total of 70 W and the combustion engine M with 500 W in stand-by mode.

[0055] As explained, the charging pole 1 according to the invention is thus supplied with energy by the electrical energy stored in the battery B, the generator GE2 feeding it and ultimately by the fuel stored in the tank T as the primary energy source. The charging pole 1 according to the invention therefore does not require an external energy source, e.g. a power connection, for charging an electric vehicle. Experience has shown that the cost of connecting to an external power source requires a great deal of effort and is associated with high costs. The charging pole 1 according to the invention is cheaper to install than, for example, a charging pole that draws its primary current from the available power grid.

[0056] The process according to the invention is initiated by a start-up process. Up to this point, the charging pole 1 is in a stand-by mode in which only the control unit S, the communication unit K and the HMI unit H are ready for operation. The start-up process puts the charging pole 1 into an operating state. For this purpose, the energy conversion process is first started with the aid of the energy conversion unit, in this embodiment an internal combustion engine. A starting device installed on the combustion engine M starts the combustion engine M, which is supplied with fuel from the tank T. The combustion engine M is started by the starting device. The first generator GE1 coupled to the combustion engine M is driven by the kinetic energy of the combustion engine M and generates electrical energy. This electrical energy generated by the first generator GE1 is used exclusively and 100% for charging the electric vehicle.

[0057] The second generator GE2, also coupled to the combustion engine M, is also driven by the kinetic energy of the combustion engine M and generates electrical energy. This electrical energy generated by the second generator GE2 is used to charge the energy storage device located in the charging pole 1 and to operate the HMI unit H, the control unit S and the communication unit K during the charging of the electric vehicle. Thereafter, the process of charging the electric vehicle is performed by the electric energy generated by the generator GE1. Typically, a user gives a start command for charging via the HMI unit H. The electric vehicle is supplied with electrical energy by the charging pole 1 through the charging cable connected to the connection device A, in this embodiment example with a maximum of 150 kW. After the electric vehicle has been charged, the energy conversion process is terminated, the combustion engine M is stopped and the process of charging the electric vehicle is terminated. No more electrical energy flows from the charging pole 1 to the electric vehicle. The charging pole 1 is returned to stand-by mode.

[0058] FIG. 3 shows a schematic view of the charging pole 1 according to the invention with representation of the connections by means of power lines between the components within the charging pole 1. In this embodiment example, the charging pole 1 has an inverter WR. In the charging pole 1, the electrical energy for delivery to an electric vehicle is generated by the combustion engine M as an energy conversion unit. The combustion engine M is a piston combustion engine with a shaft power of 70 kW, the combustion engine M is operated with methanol or ethanol or a mixture of methanol and ethanol. The fuel is stored in the charging pole 1 in the tank T.

[0059] The combustion engine M drives the first generator GE1 by rotation. The kinetic energy generated by the combustion engine M is thus converted by the first generator GE1 into electrical energy, into an alternating current. The combustion engine M is connected to the first generator GE1 via the first linking element KE1. The first generator GE1 generates an electrical power of 50 kW. The alternating current generated by the first generator GE1 is converted into a direct current in the rectifier GR. The combustion engine M is connected to a second generator GE2 via the second linking element KE2, which is arranged separately from the first linking element KE1. The second generator GE2 is also driven like the first generator GE1 by rotation of the combustion engine M, the kinetic energy of the combustion engine M is converted into electrical energy. The second generator GE2 generates a direct current with a voltage of 12V.

[0060] The HMI unit H has the display and operating terminal on which the data important for a user, such as charging current, charging duration and costs of the charging process, are called up and displayed. In addition, a user can initiate or end the charging process and pay. The rechargeable battery B (battery) has a capacity of 50 kWh and is charged by the second generator GE2 during the charging of the electric vehicle. At the same time, the battery B supplies the control unit S, the communication unit K and the HMI unit H with electrical energy for operation, as well as the combustion engine M with electrical energy for starting and operation. The charging pole 1 also has the connection device A for one or more charging cables used to charge an electric vehicle to be charged. The charging cable also has a data line that establishes a data connection between the control unit S and the electric vehicle. Communication with the battery of the electric vehicle to be charged is established via the data line and the required data such as state of charge, charging voltage and charging current are queried. The control unit S sets the parameters of the charging current on the basis of this data. The charging pole 1 is connected to the operator of the charging pole 1 and a plurality of charging poles via the communication unit K, which establishes an internet connection, e.g. with a cloud storage. In this embodiment example, the battery B is connected to the connection device A for the charging cable via an inverter WR and the rectifier GR. During the charging process, the inverter GW and rectifier GR function as a power unit that adjusts the charging state of the electric vehicle to be charged, the charging voltage and the charging current of the charging pole 1.

[0061] The process according to the invention is initiated by a start-up process. Up to this point, the charging pole 1 is in a stand-by mode in which only the control unit S, the communication unit K and the HMI unit H are ready for operation. The start-up process puts the charging pole 1 into an operating state. For this purpose, the energy conversion process is started first. A starting device installed on the combustion engine M (energy conversion unit) starts the combustion engine M, which is supplied with fuel from the tank T. The combustion engine M is started by the energy conversion unit. The first generator GE1 coupled to the combustion engine M is driven by the kinetic energy of the combustion engine M and generates electrical energy. This electrical energy generated by the first generator GE1 is used exclusively and 100% for charging the electric vehicle. The second generator GE2, which is also coupled to the combustion engine M, is also driven by the kinetic energy of the combustion engine M and generates electrical energy. This electrical energy generated by the second generator GE2 is used to charge the energy storage device located in the charging pole 1 and to operate the HMI unit H, the control unit S and the communication unit K during the charging of the electric vehicle. Thereafter, the process of charging the electric vehicle is performed by the electric energy generated by the generator GE1. Typically, a user gives a start command for charging via the HMI unit H. The electric vehicle is supplied with electrical energy by the charging pole 1 through the charging cable connected to the connection device A, in this embodiment example with a maximum of 150 kW.

[0062] After the electric vehicle has been charged, the energy conversion process is terminated, the combustion engine M is stopped and the process of charging the electric vehicle is terminated. No more electrical energy flows from the charging pole 1 to the electric vehicle. The charging pole 1 is returned to stand-by mode.

[0063] Another embodiment example of the energy flow during the charging process between the components of the charging pole 1 is shown in FIG. 4. The primary energy source for the charging process is the fuel (methanol/ethanol or a mixture of methanol and ethanol) stored in the tank T with an assumed usable energy content of 6.28 kWh/I. The combustion engine M (energy conversion unit) generates a nominal power of 70 kW, which is transmitted to the generators GE1 and GE2. The first generator GE1 produces an electric current with the power of 50 kW, the second generator GE2 produces an electric current power of 5 kW. The 5 kW of electric power generated by the second generator GE2, minus 70 W, is sent to battery B to charge it. With 70 W of the power generated by the second generator GE2, the control unit S, the communication unit K and the HMI unit H are supplied with power. Therefore, 50 kW of power generated by the first generator GE1 enters the rectifier GR. The alternating current generated by the first generator GE1 is converted into a direct current in the rectifier GR. The direct current (50 kW) generated by rectifier GR is fed into the charging cable located at connection device A. The battery B with a capacity of 50 kWh supplies the control unit S, the communication unit K and the HMI unit H with a total of 70 W and the combustion engine M with 500 W in stand-by mode. In addition, in this embodiment example, the battery B feeds the rectifier GR with 50 kW of current power. This 50 kW of power is also fed as direct current, in addition to the approximately 50 kW of power generated by the first generator GE1, to the energy storage unit of the electric vehicle to be charged and/or to a second electric vehicle to be charged, which is connected to the charging pole 1 by means of a second charging cable connected to the connection device A. The rectifier GR functions in particular as a power unit. Due to this advantageous configuration of the method according to the invention, the charging time is significantly reduced.

[0064] The process according to the invention is initiated by a start-up process. Up to this point, the charging pole 1 is in a stand-by mode in which only the control unit S, the communication unit K and the HMI unit H are ready for operation. The start-up process puts the charging pole 1 into an operating state. For this purpose, the energy conversion process is started first. A starting device installed on the combustion engine M as the energy conversion unit of this embodiment starts the combustion engine M, which is supplied with fuel from the tank T. The combustion engine M is started by the communication unit K. The first generator GE1 coupled to the combustion engine M is driven by the kinetic energy of the combustion engine M and generates electrical energy. This electrical energy generated by the first generator GE1 is used exclusively and 100% for charging the electric vehicle. The second generator GE2, which is also coupled to the combustion engine M, is also driven by the kinetic energy of the combustion engine M and generates electrical energy. This electrical energy generated by the second generator GE2 is used to charge the energy storage device located in the charging pole 1 and to operate the HMI unit H, the control unit S and the communication unit K during the charging of the electric vehicle. Thereafter, the process of charging the electric vehicle is performed by the electric energy generated by the generator GE1. Typically, a user gives a start command for charging via the HMI unit H. The electric vehicle is supplied with electrical energy by the charging pole 1 through the charging cable connected to the connection device A, in this embodiment example with a maximum of 150 kW. After the electric vehicle has been charged, the energy conversion process is terminated, the combustion engine M is stopped and the process of charging the electric vehicle is terminated. No more electrical energy flows from the charging pole 1 to the electric vehicle. The charging pole 1 is returned to stand-by mode.

[0065] FIG. 5 shows a schematic view of the charging pole 1 according to the invention, showing the connections by means of power lines between the components within the charging pole 1. In this embodiment, the charging pole 1 also has an inverter WR. In the charging pole 1, the electrical power for delivery to an electric vehicle is generated by the energy conversion unit, the combustion engine M. The combustion engine M is a piston combustion engine with a shaft power of 220 kW, the combustion engine M is operated with methanol or ethanol or a mixture of methanol and ethanol. The fuel is stored in the charging pole 1 in the tank T.

[0066] The combustion engine M drives the first generator GE1 by rotation. The kinetic energy generated by the combustion engine M is thus converted by the first generator GE1 into electrical energy, into an alternating current. The combustion engine M is connected to the first generator GE1 via the first linking element KE1. The first generator GE1 generates an electrical power of 200 kW. The alternating current generated by the first generator GE1 is converted into a direct current in the rectifier GR. The combustion engine M is connected to a second generator GE2 via the second linking element KE2, which is arranged separately from the first linking element KE1. The second generator GE2 is also driven like the first generator GE1 by rotation of the combustion engine M, the kinetic energy of the combustion engine M is converted into electrical energy. The second generator GE2 generates a direct current with a voltage of 48V.

[0067] The HMI unit H has the display and operating terminal on which the data important for a user, such as charging current, charging duration and costs of the charging process, are called up and displayed. In addition, a user can initiate or end the charging process and pay. The rechargeable battery B (battery) has a capacity of 50 kWh and is charged by the second generator GE2 during the charging of the electric vehicle. At the same time, the battery B supplies the control unit S, the communication unit K and the HMI unit H with electrical energy for operation, as well as the combustion engine M with electrical energy for starting and operation.

[0068] The charging pole 1 also has the connection device A for one or more charging cables with which an electric vehicle to be charged is charged. The charging cable also has a data line that establishes a data connection between the control unit S and the electric vehicle. Communication with the battery of the electric vehicle to be charged is established via the data line and the required data such as state of charge, charging voltage and charging current are queried. The control unit S sets the parameters of the charging current on the basis of this data. The charging pole 1 is connected to the operator of the charging pole 1 and a plurality of charging poles via the communication unit K, which establishes an internet connection, e.g. with a cloud storage.

[0069] In this example, the battery B is connected to the connection device A for the charging cable via an inverter WR and the rectifier GR. During the charging process, the inverter GW and rectifier GR function as a power unit that adjusts the charging state of the electric vehicle to be charged, the charging voltage and the charging current of the charging pole 1. In this example, a first electric vehicle to be charged is charged with approximately 200 kW DC generated by the first generator GE1. A second electric vehicle to be charged is charged with 50 kW alternating current by the battery B.

[0070] The process according to the invention is initiated by a start-up process. Up to this point, the charging pole 1 is in a stand-by mode in which only the control unit S, the communication unit K and the HMI unit H are ready for operation. The start-up process puts the charging pole 1 into an operating state. For this purpose, the energy conversion process is first started in the energy conversion unit (combustion engine M). A starting device installed on the combustion engine M starts the combustion engine M, which is supplied with fuel from the tank T.

[0071] The first generator GE1 coupled to the combustion engine M is driven by the kinetic energy of the combustion engine M and generates electrical energy. This electrical energy generated by the first generator GE1 is used exclusively and 100% for charging the electric vehicle. The second generator GE2, which is also coupled to the combustion engine M, is also driven by the kinetic energy of the combustion engine M and generates electrical energy. This electrical energy generated by the second generator GE2 is used to charge the energy storage device located in the charging pole 1 and to operate the HMI unit H, the control unit S and the communication unit K during the charging of the electric vehicle.

[0072] Then the process of charging the electric vehicle by the electrical energy generated by the generator GE1 takes place. Typically, a user gives a start command for charging through the HMI unit H. The electric vehicle is supplied with electrical energy by the charging pole 1 through the charging cable connected to the connection device A, in this embodiment example with a maximum of 200 kW. Once the electric vehicle has been charged, the energy conversion process is terminated, the combustion engine M is stopped and the process of charging the electric vehicle is terminated. No more electrical energy flows from the charging pole 1 to the electric vehicle. The charging pole 1 is returned to stand-by mode.

[0073] Another embodiment example of the energy flow during the charging process between the components of the charging pole 1 is shown in FIG. 6. The primary energy source for the charging process is the fuel (methanol/ethanol or a mixture of methanol and ethanol) stored in the tank T with an assumed usable energy content of 6.28 kWh/I. The combustion engine M (energy conversion device) generates a nominal power of 220 kW, which is transmitted to the generators GE1 and GE2. The first generator GE1 produces an electric current with the power of 200 kW, the second generator GE2 produces an electric current with the power of 5 kW. The 5 kW of electric power generated by the second generator GE2, minus 70 W, is sent to battery B to charge it. With 70 W of the power generated by the second generator GE2, power is supplied to control unit S, communication unit K and HMI unit H.

[0074] Therefore, 200 kW of power, generated by the first generator GE1, enters rectifier GR. The alternating current generated by the first generator GE1 is converted into a direct current in the rectifier GR. The direct current (200 kW) generated by rectifier GR is fed into the charging cable located at connection device A. The battery B with a capacity of 50 kWh supplies the control unit S, the communication unit K and the HMI unit H with a total of 70 W and the combustion engine M with 500 W in stand-by mode. In addition, in this embodiment example, the battery B feeds the rectifier GR with 50 kW of current power. These 50 kW of power are also fed as direct current, in addition to the 200 kW of power generated by the first generator GE1, to the energy storage device of the electric vehicle to be charged and/or to a second electric vehicle to be charged, which is connected to the charging pole 1 by means of a second charging cable connected to the connection device A. The rectifier GR functions in particular as a power unit. Due to this advantageous configuration of the method according to the invention, the charging time is significantly reduced.

[0075] The process according to the invention is initiated by a start-up process. Up to this point, the charging pole 1 is in a stand-by mode in which only the control unit S, the communication unit K and the HMI unit H are ready for operation. The start-up process puts the charging pole 1 into an operating state. For this purpose, the energy conversion process is started first. A starting device installed on the combustion engine M (energy conversion unit) starts the combustion engine M, which is supplied with fuel from the tank T. The first generator GE1 coupled to the combustion engine M is driven by the kinetic energy of the combustion engine M and generates electrical energy. This electrical energy generated by the first generator GE1 is used exclusively and 100% for charging the electric vehicle.

[0076] The second generator GE2, also coupled to the combustion engine M, is also driven by the kinetic energy of the combustion engine M and generates electrical energy. This electrical energy generated by the second generator GE2 is used to charge the energy storage unit located in the charging pole 1 and to operate the HMI unit H, the control unit S and the communication unit K during charging of the electric vehicle.

[0077] Then the process of charging the electric vehicle by the electrical energy generated by the generator GE1 takes place. Typically, a user gives a start command for charging through the HMI unit H. The electric vehicle is supplied with electrical energy by the charging pole 1 through the charging cable connected to the connection device A, in this embodiment example with a maximum of 250 kW (200 kW by the first generator GE1, 50 kW by the battery B). After the electric vehicle has been charged, the energy conversion process is terminated, the combustion engine M is stopped and the process of charging the electric vehicle is terminated. No more electrical energy flows from the charging pole 1 to the electric vehicle. The charging pole 1 is returned to stand-by mode.

REFERENCE LIST

[0078] 1 Charging pole [0079] H HMI unit [0080] GW DC converter [0081] GE1 1. generator [0082] GE2 2. generator [0083] S Control unit [0084] K Communication unit [0085] B Battery/electric energy storage unit [0086] A Connection device for charging cable [0087] T Tank unit [0088] GR1, GR2 Rectifier [0089] WR Inverter [0090] KE1 1. linking element [0091] KE2 2. linking element [0092] G Housing [0093] M Energy conversion unit (combustion engine)