New energy vehicle thermal management system and vehicle

Abstract

The utility model discloses a new energy vehicle heat management system. The new energy vehicle heat management system includes compressor, compressor connects condenser, condenser connects air conditioner evaporimeter, air conditioner evaporimeter parallel battery cooler, battery cooler connects four -way water valve, and the interface no. 2 of four -way water valve connects battery water pump, and battery water pump connects refrigerator, and refrigerator connects first three -way water valve, and the interface no. 2 of first three -way water valve connects battery pack, and the interface no. 3 of first three -way water valve connects empty pipe no. 1, and empty pipe no. 1 is connected to battery cooler through electric heater after parallel connection with battery pack, and the interface no. 3 of four -way water valve connects electric drive water pump, and electric drive water pump connects electric drive system, and electric drive system connects low temperature water tank, and low temperature water tank connects second three -way water valve, and the interface no. 2 of second three -way water valve connects empty pipe no. 2, and the interface no. 3 of second three -way water valve is communicated with the interface no. 4 of four -way water valve through empty pipe no. 3. The utility model has solved the problem that prior art is not conducive to the popularization of vehicle refrigerator to low -end car.

Description

Technical Field

[0001] This utility model relates to the field of new energy vehicle technology, and in particular to a thermal management system and vehicle for new energy vehicles. Background Technology

[0002] There is an existing Chinese utility model patent application with publication number CN120134896A, entitled "Coolant Circuit, Thermal Management System, Control Method and Vehicle". Based on its description and drawings, it is easy to see that the coolant circuit involves a large number of valve bodies, specifically "first connecting valve body 90", "second connecting valve body 100", "second valve body component 140", "fourth connecting valve body 220", "first valve body component 60", and "third connecting valve body 200". This not only increases costs but also increases the risk of pipeline leakage and the difficulty of the control method, which is not conducive to the promotion of vehicle-mounted refrigerators in low-end vehicles. Utility Model Content

[0003] The purpose of this invention is to provide a new energy vehicle thermal management system that is simple in structure, low in cost, and conducive to the promotion of vehicle-mounted refrigerators to low-end vehicles.

[0004] To achieve the above-mentioned objectives of this utility model, the thermal management system for new energy vehicles adopts the following technical solution:

[0005] A thermal management system for new energy vehicles includes a compressor connected to a condenser, and an air conditioning evaporator connected to the condenser. One end of the air conditioning evaporator is connected to the condenser, and the other end is connected to the compressor. A battery cooler is connected in parallel to the air conditioning evaporator. One end of the battery cooler is connected to a four-way water valve. One port of the four-way water valve is connected to the battery cooler, and another port of the four-way water valve is connected to a battery water pump. The battery water pump is connected to a refrigerator. One end of a cold storage heat exchanger built into the refrigerator is connected to the battery water pump, and the other end is connected to a first three-way water valve. The first port of the first three-way water valve is connected to the cold storage heat exchanger built into the refrigerator. The system is interconnected. Interface 2 of the first three-way water valve is connected to a battery pack. Interface 3 of the first three-way water valve is connected to an empty pipe. The empty pipe is connected in parallel with the battery pack and then connected to the battery cooler via an electric heater. Interface 3 of the four-way water valve is connected to an electric water pump. The electric water pump is connected to an electric drive system. The electric drive system is connected to a low-temperature water tank. The low-temperature water tank is connected to a second three-way water valve. Interface 1 of the second three-way water valve is connected to the low-temperature water tank. Interface 2 of the second three-way water valve is connected to an empty pipe. The empty pipe is connected in parallel with the low-temperature water tank and then to the electric drive system. Interface 3 of the second three-way water valve is connected to interface 4 of the four-way water valve via the empty pipe.

[0006] Preferably, a first refrigerant control valve is provided on the pipeline in parallel between the air conditioner evaporator and the battery cooler.

[0007] Preferably, the first refrigerant control valve is a thermostatic expansion valve or an electronic expansion valve.

[0008] Preferably, a second refrigerant control valve is provided on the pipeline in parallel with the air conditioner evaporator.

[0009] Preferably, the refrigerator includes a cabinet with a cold storage heat exchanger, the cold storage heat exchanger is located at one end of the cabinet, a cold storage assembly is provided on the outside of the cold storage heat exchanger, a semiconductor refrigeration chip is provided on the side of the cold storage assembly facing the storage cavity of the cabinet, an air-cooled heat exchange fin is provided on the outside of the end of the semiconductor refrigeration chip facing the storage cavity of the cabinet, a fan is provided on the top of the air-cooled heat exchange fin, and a thermoelectric cooler is provided on the inner wall of the cabinet.

[0010] To achieve the aforementioned objectives of this utility model, the vehicle of this utility model adopts the following technical solution:

[0011] A vehicle that employs a new energy vehicle thermal management system.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] 1. By simplifying the structure and reducing the number of valves, not only is the cost reduced, but the risk of pipeline leakage and the difficulty of control methods are also reduced, which is conducive to the promotion of vehicle refrigerators to low-end vehicles.

[0014] 2. Adding a thermoelectric cooler (TEC) inside the refrigerator allows for reverse conduction of the TEC to achieve heating, saving the need for the refrigerator's built-in heater. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of the new energy vehicle thermal management system of this utility model.

[0016] Figure 2 This is a schematic diagram of the refrigerator's structure.

[0017] Figure 3 This diagram illustrates the working principle of the battery pack and the refrigerator's cooling mode.

[0018] Figure 4 This is a schematic diagram illustrating the working principle of the battery pack and the refrigerator's heating mode.

[0019] Figure 5 The diagram shows the working principle of the refrigerator in battery pack cooling mode when it is not working.

[0020] Figure 6 The diagram shows the working principle of the refrigerator not working and the battery pack heating mode.

[0021] Figure 7 This is a diagram illustrating the working principle of a refrigerator in a non-operating mode (refrigeration and battery pack not working).

[0022] Figure 8This is a diagram illustrating the working principle of a refrigerator in heating mode when the battery pack is not in operation.

[0023] Figure 9 This is a diagram illustrating the working principle of a refrigerator's cooling mode in low-temperature environments.

[0024] Among them, 10 is the compressor, 20 is the condenser, 30 is the air conditioner evaporator, 40 is the battery cooler, 50 is the first refrigerant control valve, 60 is the second refrigerant control valve, 70 is the four-way water valve, 701 is the interface one of the four-way water valve, 702 is the interface two of the four-way water valve, 703 is the interface three of the four-way water valve, 704 is the interface four of the four-way water valve, 80 is the battery water pump, 90 is the refrigerator, 901 is the cold storage heat exchanger, 902 is the cabinet, 903 is the cold storage assembly, 904 is the semiconductor refrigeration chip, 905 is the air-cooled heat exchange fins, 906 is the fan, and 10 is the... 0 First three-way water valve, 1001 First three-way water valve interface one, 1002 First three-way water valve interface two, 1003 First three-way water valve interface three, 1003, 110 Battery pack, 120 Empty pipe one, 130 Electric heater, 140 Electric water pump, 150 Electric drive system, 160 Low temperature water tank, 170 Second three-way water valve, 1701 Second three-way water valve interface one, 1702 Second three-way water valve interface two, 1703 Second three-way water valve interface three, 180 Empty pipe two, 190 Empty pipe three. Detailed Implementation

[0025] The present invention will be further illustrated below with reference to specific embodiments. It should be understood that these embodiments are only for illustrating the present invention and not for limiting the scope of the present invention. After reading the present invention, any modifications of the present invention in various equivalent forms by those skilled in the art will fall within the scope defined by the appended claims.

[0026] like Figure 1-2As shown, a thermal management system for a new energy vehicle includes a compressor 10, which is connected to a condenser 20. The condenser 20 is connected to an air conditioning evaporator 30. One end of the air conditioning evaporator 30 is connected to the condenser 20, and the other end is connected to the compressor 10. A battery cooler 40 is connected in parallel to the air conditioning evaporator 30. A first refrigerant control valve 50, which is a thermostatic expansion valve (TXV), is installed on the parallel connection between the air conditioning evaporator 30 and the battery cooler 40. A second refrigerant control valve 60, which is an electronic expansion valve (EXV), is installed on the parallel connection between the battery cooler 40 and the air conditioning evaporator 30. One end of the battery cooler 40 is connected to a four-way water valve 70. Port 701 of the four-way water valve is connected to the battery cooler 40, and port 702 of the four-way water valve is connected to a battery water pump 80. The battery water pump 80 is connected to a refrigerator 90. The refrigerator 90 includes a housing 902 with a cold storage heat exchanger 901 located at the left end of the housing 902. A cold storage assembly 903 is installed outside the cold storage heat exchanger 901. The cold storage assembly includes a metal shell fitted onto the outside of the cold storage heat exchanger. Cold storage liquid is injected into the metal shell, and the cold storage heat exchanger is completely immersed in the cold storage liquid. A semiconductor cooling chip 904 is installed on the side of the cold storage assembly 903 facing the storage cavity of the housing. A heat exchange fin 905 is installed on the outer side of the end of the conductor cooling plate 904 facing the storage cavity of the cabinet. A fan 906 is installed on the top of the heat exchange fin. A thermoelectric cooler (TEC) is installed on the inner wall of the cabinet. The TEC can be used for reverse conduction to achieve the heating function, saving the refrigerator's built-in heater. One end of the refrigerator's built-in cold storage heat exchanger 901 is connected to the battery water pump 80, and the other end is connected to the first three-way water valve 100. The first three-way water valve's port 1001 is connected to the refrigerator's built-in cold storage heat exchanger. The first three-way water valve's port 2 1002 is connected to the battery pack 110, and the first three-way water valve's port 3 1003 is connected to the empty pipe 120. After being connected in parallel with the battery pack 110, 120 is connected to the battery cooler 40 via the electric heater 130. The interface 3 703 of the four-way water valve is connected to the electric water pump 140. The electric water pump 140 is connected to the electric drive system 150. The electric drive system 150 is connected to the low-temperature water tank 160. The low-temperature water tank is connected to the second three-way water valve 170. The interface 1 1701 of the second three-way water valve is connected to the low-temperature water tank 160. The interface 2 1702 of the second three-way water valve is connected to the empty pipe 180. The empty pipe 180 is connected in parallel with the low-temperature water tank 160 to the electric drive system 150. The interface 3 1703 of the second three-way water valve is connected to the interface 4 704 of the four-way water valve via the empty pipe 190.

[0027] like Figure 3-9 As shown, the specific working process and principle of the new energy vehicle thermal management system of this utility model are as follows:

[0028] In battery pack and refrigerator cooling mode: the compressor, battery pack, and refrigerator are working, the electric heater is not working, ports one and four of the four-way water valve are open, ports one and two of the first and three-way water valves are open, the battery water pump draws out the refrigerant cooled by the compressor from the battery cooler, and the refrigerant completes the refrigerant circulation through the refrigerator's built-in cold storage heat exchanger, battery pack, and electric heater; the refrigerant entering the cold storage heat exchanger cools the cold storage liquid, the hot end of the semiconductor refrigeration chip enhances heat transfer, and the temperature of the hot end of the semiconductor refrigeration chip is reduced, achieving high cooling efficiency and cooling power under small temperature difference between the hot and cold ends of the semiconductor refrigeration chip. When the fan is working, it accelerates the gas flow inside the cabinet and improves heat exchange efficiency.

[0029] In battery pack and refrigerator heating mode: the compressor does not work, the electric heater, battery pack and refrigerator work, the four-way water valve ports one and four are open, the first and three-way water valve ports one and two are open, the battery water pump extracts the heat medium heated by the electric heater in the battery cooler, and the heat medium completes the heat medium circulation through the refrigerator's own cold storage heat exchanger, battery pack and electric heater.

[0030] When the refrigerator is not working and in battery pack cooling mode: the compressor and battery pack are working, the electric heater is not working, the four-way water valve ports 1 and 4 are open, and the first and third-way water valve ports 1 and 2 are open. The battery water pump draws out the refrigerant cooled by the compressor from the battery cooler. The refrigerant completes the refrigerant circulation through the refrigerator's built-in cold storage heat exchanger, battery pack, and electric heater. In this mode, neither the fan nor the semiconductor cooling chip works.

[0031] When the refrigerator is not working and in battery pack heating mode: the compressor is not working, the electric heater and battery pack are working, the four-way water valve ports 1 and 4 are open, the first and third-way water valve ports 1 and 2 are open, the battery water pump draws out the heat medium heated by the electric heater in the battery cooler, and the heat medium completes the heat medium circulation through the refrigerator's own cold storage heat exchanger, battery pack and electric heater; in this mode, neither the fan nor the semiconductor cooling chip works.

[0032] In the refrigerator's cooling and battery pack non-working mode: the compressor and refrigerator are working, the electric heater is not working, the four-way water valve's ports one and four are open, the first and three-way water valve's ports one and three are open, the battery water pump draws out the refrigerant that has been cooled by the compressor from the battery cooler, and the refrigerant completes the refrigerant circulation through the refrigerator's built-in cold storage heat exchanger, empty pipe one, and electric heater.

[0033] In the refrigerator's heating and battery pack non-working mode: the compressor does not work, the electric heater and refrigerator work, the four-way water valve's ports one and four are open, the first and three-way water valves' ports one and three are open, the battery water pump extracts the heat medium heated by the electric heater in the battery cooler, and the heat medium completes the heat medium circulation through the refrigerator's own cold storage heat exchanger, empty pipe one and the electric heater.

[0034] In the refrigerator's cooling mode under low-temperature conditions: the compressor and electric heater are not working. All four ports of the four-way water valve are open. Ports one and three of the first three-way water valve are open. Ports one and three of the second three-way water valve are open. The battery water pump extracts the refrigerant cooled by the outside from the low-temperature water tank. The refrigerant completes the refrigerant circulation through empty pipe three, the refrigerator's own cold storage heat exchanger, empty pipe one, electric heater, battery cooler, electric water pump, and electric drive system.

[0035] A vehicle that employs a new energy vehicle thermal management system.

[0036] The detailed description listed above is merely a specific description of feasible implementation methods of this utility model and is not intended to limit the scope of protection of this utility model.

Claims

1. A thermal management system for new energy vehicles, comprising a compressor, a condenser connected to the compressor, an air conditioning evaporator connected to the condenser, one end of the air conditioning evaporator connected to the condenser and the other end connected to the compressor, and a battery cooler connected in parallel to the air conditioning evaporator, characterized in that: One end of the battery cooler is connected to a four-way water valve. Port 1 of the four-way water valve is connected to the battery cooler. Port 2 of the four-way water valve is connected to a battery water pump. The battery water pump is connected to a refrigerator. One end of the refrigerator's built-in cold storage heat exchanger is connected to the battery water pump, and the other end is connected to a first three-way water valve. Port 1 of the first three-way water valve is connected to the refrigerator's built-in cold storage heat exchanger. Port 2 of the first three-way water valve is connected to a battery pack. Port 3 of the first three-way water valve is connected to an empty pipe. The empty pipe is connected in parallel with the battery pack and then connected to the battery cooler via an electric heater. Port 3 of the four-way water valve is connected to an electric-driven water pump. The electric-driven water pump is connected to an electric drive system. The electric drive system is connected to a low-temperature water tank. The low-temperature water tank is connected to a second three-way water valve. Port 1 of the second three-way water valve is connected to the low-temperature water tank. Port 2 of the second three-way water valve is connected to an empty pipe. The empty pipe is connected in parallel with the low-temperature water tank and then connected to the electric drive system. Port 3 of the second three-way water valve is connected to port 4 of the four-way water valve via the empty pipe.

2. The new energy vehicle thermal management system according to claim 1, characterized in that: A first refrigerant control valve is installed on the pipeline connecting the air conditioner evaporator and the battery cooler in parallel.

3. The new energy vehicle thermal management system according to claim 2, characterized in that: The first refrigerant control valve is a thermostatic expansion valve or an electronic expansion valve.

4. The new energy vehicle thermal management system according to claim 1, characterized in that: A second refrigerant control valve is installed on the pipeline connecting the battery cooler and the air conditioner evaporator in parallel.

5. The new energy vehicle thermal management system according to claim 1, characterized in that: The refrigerator includes a cabinet with a cold storage heat exchanger, which is located at one end of the cabinet. A cold storage assembly is provided on the outside of the cold storage heat exchanger. A semiconductor refrigeration chip is provided on the side of the cold storage assembly facing the storage cavity of the cabinet. An air-cooled heat exchange fin is provided on the outside of the end of the semiconductor refrigeration chip facing the storage cavity of the cabinet. A fan is provided on the top of the air-cooled heat exchange fin. A thermoelectric cooler is provided on the inner wall of the cabinet.

6. A vehicle, characterized in that: The vehicle uses the new energy vehicle thermal management system as described in any one of claims 1-5.

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