Method For Controlling The Passenger Compartment Temperature Of An Electrically Operated Vehicle And An Air-Conditioning System For The Electrically Operated Vehicle

• US 20110139397A1
• Filed: 09/27/2010
• Published: 06/16/2011
• Est. Priority Date: 09/28/2009
• Status: Abandoned Application

• Current Assignee: Valeo Klimasysteme GmbH, (Valeo SE)
• Original Assignee: Valeo Klimasysteme GmbH, (Valeo SE)
• Inventors: Haussmann, Roland
• Application Number:
  US12/891,040
• Publication Number:
  US 20110139397A1
• Time in Patent Office: Days
• US Class Current: 165/43
• CPC Class Codes: B60H 1/00278 for the battery arrangement of batteries B60R16/04
• CPC Class Codes: B60H 1/00499 Heat or cold storage without phase change including solid bodies, e.g. batteries
• CPC Class Codes: B60H 2001/00307 Component temperature regulation using a liquid flow
• CPC Class Codes: B60H 2001/00949 comprising additional heating/cooling sources, e.g. second evaporator
• CPC Class Codes: F28D 20/003 using thermochemical reactions
• CPC Class Codes: H01M 10/613 Cooling or keeping cold
• CPC Class Codes: H01M 10/615 Heating or keeping warm
• CPC Class Codes: H01M 10/625 Vehicles
• CPC Class Codes: H01M 10/663 the system being an air-conditioner or an engine
• CPC Class Codes: Y02E 60/10 Energy storage using batteries

Abstract

A method for controlling the passenger compartment temperature of an electrically operated vehicle which has a battery (26), comprises the following steps: providing an air-conditioning system (10) with a coolant circuit (14), thermal coupling the coolant circuit (14) to the battery (26) in such a way that the battery (26) forms a heat accumulator of the coolant circuit (14), and optional cooling or heating of the battery (26) while the battery (26) is coupled to an electric charging station for charging the battery (26). The corresponding operating air-conditioning system (10) provides for the vehicle battery (26) to be thermally coupled directly or indirectly to the coolant circuit (14) in such a way that the coolant circuit (14) optionally cools or heats the battery (26), and heat from the battery (26) can optionally be fed into the coolant circuit (14).

Claims

1. A method for controlling the passenger compartment temperature of an electrically operated vehicle which has a battery (26), characterized by the following steps:

providing an air-conditioning system (10) with a coolant circuit (14),

thermal coupling the coolant circuit (14) to the battery (26) in such a way that the battery (26) forms a heat accumulator of the coolant circuit (14), and

optional cooling or heating of the battery (26) while the battery (26) is coupled to an electric charging station for charging the battery (26).

2. A method according to claim 1, characterized in that the cooling or heating takes place during the charging of the battery (26).

3. A method according to claim 1, characterized in that the heat accumulator can be coupled to the coolant circuit (14) and can be decoupled thermally therefrom.

4. A method according to claim 1, characterized in that the temperature of the battery (26) during charging is either lowered to a predefined minimum value in a cooling mode or heated to a predefined maximum value in a battery heating mode.

5. A method according to claim 1, characterized in that thermal energy stored in the battery (26) is fed to the coolant circuit (14) during the heating of the vehicle passenger compartment.

6. A method according to claim 1, characterized in that thermal energy in the discharge air of a vehicle passenger compartment and/or of an electrical vehicle component which is to be cooled and/or of the electric drive of the vehicle, is fed to the coolant circuit (14).

7. A method according to claim 1, characterized in that the battery (26) is heated or cooled directly by the coolant circuit (14) and a heat exchanger (28) which is connected into the coolant circuit (14).

8. A method according to claim 1, characterized in that a radiator by means of which the battery (26) is cooled, is present in the coolant circuit (14), in the region of the battery (26).

9. A method according to claim 8, characterized in that during the cooling of the battery (26), the coolant is expanded by means of an expansion valve (24) which can be connected into the circuit in the region of the battery (26) so that the coolant can take up heat from the battery (26) afterwards.

10. A method according to claim 1, characterized in that a heating device by means of which the battery (26) is heated, is present in the coolant circuit (14), in the region of the battery (26).

11. A method according to claim 1, characterized in that, during the coupling to the charge station, the coolant circuit (14) is used as a hot gas circuit in order to heat the battery (26) by the hot gas circuit.

12. A method according to claim 1, characterized in that the selection of cooling or heating of the battery (26) during the coupling to the charge station is made manually at the start of the electrical charging process.

13. A method according to claim 1, characterized in that the selection of the cooling mode or heating mode is made automatically on the basis of the external temperature and/or the time of year.

14. A method according to claim 1, characterized in that a fluid circuit (40) which is coupled to the coolant circuit (14) is provided, in which the fluid circuit (40), the battery (26), and at least one heat source of a vehicle component which is to be cooled are arranged, wherein during the heating of the battery (26) heat is fed to the fluid circuit (40) from the coolant circuit (14), and during the operation of the vehicle, thermal energy is outputted to the coolant circuit (14), and/or during cooling of the battery (26), thermal energy is extracted, and during operation of the vehicle, thermal energy of the heat source is taken up by the battery (26).

15. An air-conditioning system (10) for an electrically operated vehicle, the system (10) having a coolant circuit (14) which has a compressor (16), a radiator, and a heating device, wherein a vehicle battery (26) is thermally coupled directly or indirectly via a heat exchanger (28) assigned thereto to the coolant circuit (14) in such a way that the coolant circuit (14) optionally cools or heats the battery (26), or heat from the battery (26) can be fed into the coolant circuit (14).

16. An air-conditioning system (10) according to claim 15, characterized in that a switchable heat exchanger (28, 44) is provided in the coolant circuit (14), which heat exchanger (28, 44) can be operated as a vaporizer by an expansion valve (24) or as a condenser via a bypass line (30), in order to cool or heat the directly or indirectly coupled battery (26).

17. An air-conditioning system (10) according to claim 15, characterized in that a discharge air heat exchanger (34) is provided which is connected to a discharge air line of a vehicle passenger compartment in order to take up thermal energy from the discharge air.

18. An air-conditioning system (10) according to claim 15, characterized in that a vehicle component heat exchanger (32) is provided which is connected to an electrical vehicle component in order to take up thermal energy from the vehicle component.

19. An air-conditioning system (10) according to claim 15, characterized in that at least two heat exchangers (28, 32, 34) are connected in parallel.

20. An air-conditioning system (10) according to claim 15, characterized in that at least two heat exchangers (28, 32, 34) which feed thermal energy to the coolant circuit are connected in series, wherein the heat exchangers (28, 32, 34) of the components which are to be cooled to the greatest extent and have the lowest operating temperature are arranged at the front of the series circuit.

21. An air-conditioning system (10) according to claim 15, characterized in that a fluid circuit (40) which is coupled to the coolant circuit (14) is provided, which fluid circuit (40) has a fluid pump (42), the battery heat exchanger (28), and at least one further heat exchanger (32, 34) of a vehicle component which is to be cooled.

22. An air-conditioning system (10) according to claim 21, characterized in that the fluid circuit (40) is coupled to the coolant circuit (14) via a switchable heat exchanger (44).

23. An air-conditioning system (10) according to claim 21, characterized in that various coolants are provided in the circuits (14, 40), wherein a coolant which changes its phase states in the circuit is used in the coolant circuit (14), and a fluid is used in the fluid circuit (40).

24. An air-conditioning system (10) according to claim 15, characterized in that a cooling device (38) which can be optionally connected into the coolant circuit (14) is provided.

25. An air-conditioning system (10) according to claim 15, characterized in that an air-conditioning unit (12) which is connected into the coolant circuit (14) and in which the condenser (18) and a separate vaporizer (22) are seated, is provided.

26. An air-conditioning system (10) according to claim 25, characterized in that the condenser (18) is fixedly arranged in the coolant circuit (14), and the air-conditioning unit (12) can optionally form or disconnect a connection of the condenser (18) to the vehicle passenger compartment.

27. An air-conditioning system (10) according to claim 15, characterized in that an internal heat exchanger (39) is provided in the coolant circuit (14).