Battery pack cooling and air conditioning system integrated device

Abstract

The utility model relates to a battery pack cooling and air conditioning system integrated device. The device comprises a control system, a first cooling system and a second cooling system, wherein the first cooling system and the second cooling system are connected with the control system; the first cooling system comprises a cooling module arranged in the battery pack and used for cooling the battery pack; and the second cooling system comprises an air conditioner assembly for cooling the cooling liquid in the first cooling system. The air conditioning system and the battery pack cooling system are integrally controlled to form two groups of cooling systems. The whole vehicle air conditioning system is fully utilized, and when the battery pack cooling system cannot reduce the working temperature of the battery pack to the optimal temperature, the second cooling system is started to cool the cooling liquid in the first cooling system, so that the cooling efficiency is improved, and the working efficiency of the battery pack is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of electric vehicles, in particular to a battery pack cooling and air conditioning system integrated device. Background Art

[0002] Currently, most electric vehicle battery pack cooling systems on the market still use air cooling systems and conventional water circulation cooling systems. These battery pack cooling methods have many drawbacks, such as slow heat dissipation and unsatisfactory heat dissipation effects. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a battery pack cooling and air conditioning system integrated device in view of the above-mentioned deficiencies.

[0004] The utility model is realized through the following technical solutions:

[0005] A battery pack cooling and air conditioning system integrated device, the device comprising a control system, a first cooling system and a second cooling system connected to the control system;

[0006] The first cooling system includes a cooling module disposed in the battery pack, for cooling the battery pack;

[0007] The second cooling system includes an air conditioning assembly for cooling the coolant in the first cooling system.

[0008] Furthermore, in the integrated device for battery pack cooling and air conditioning system, the first cooling system further includes a battery pack cooling water pump, a cooling liquid storage tank and a radiator;

[0009] The coolant is stored in the cooling liquid storage tank, which is connected to the cooling module via the battery pack cooling water pump and the battery pack water inlet pipe. The cooling module is connected to the radiator via the battery pack water outlet pipe. The radiator water outlet pipe of the radiator is connected to the cooling liquid storage tank, forming the first cooling system.

[0010] Furthermore, in the battery pack cooling and air conditioning system integrated device, the cooling liquid storage tank is provided with a degassing pipe.

[0011] Furthermore, in the battery pack cooling and air conditioning system integrated device, when the temperature of the battery pack is too high during operation, the battery pack cooling water pump starts to work, transports the coolant in the cooling liquid storage tank to the cooling module, cools the battery pack, and repeatedly circulates through the radiator until the optimal temperature required for the battery pack to operate is reached.

[0012] Furthermore, in the aforementioned integrated device for battery pack cooling and air conditioning system, the second cooling system further includes a PTC heater;

[0013] The cooling liquid storage tank is connected to the PTC heater via the radiator water outlet pipe, the three-way valve and the PTC water inlet pipe. The PTC heater is connected to the air conditioning assembly via the air conditioning water inlet pipe. The air conditioning assembly is connected to the cooling liquid storage tank via the refrigerator water outlet pipe to form the second cooling system.

[0014] Furthermore, in the battery pack cooling and air conditioning system integrated device, the refrigerator water outlet pipe and the battery pack water inlet pipe are simultaneously connected to the cooling liquid storage tank through the battery pack cooling water pump.

[0015] Furthermore, in the battery pack cooling and air conditioning system integrated device, the radiator water outlet pipe is connected to the cooling liquid storage tank and the three-way valve respectively through the motor cooling water pump.

[0016] Furthermore, in the battery pack cooling and air-conditioning system integrated device, when the first cooling system cannot reduce the operating temperature of the battery pack to the optimal temperature, the air-conditioning assembly starts to work, and the coolant in the cooling liquid storage tank is transported to the air-conditioning assembly through the radiator water outlet pipe and the air-conditioning water inlet pipe for cooling, and then transported back to the cooling liquid storage tank through the refrigerator water outlet pipe, and the cycle is repeated until the coolant is cooled to the expected temperature; then the first cooling system is started to circulate until the optimal temperature required for the battery pack to operate is reached.

[0017] Furthermore, in the battery pack cooling and air conditioning system integrated device, a first temperature sensor is provided in the battery pack, and the first temperature sensor is connected to the control system.

[0018] Furthermore, in the battery pack cooling and air conditioning system integrated device, a second temperature sensor is provided in the cooling liquid storage tank, and the second temperature sensor is connected to the control system.

[0019] The advantages and effects of the utility model are:

[0020] 1. The battery pack cooling and air conditioning system integration device provided by this utility model integrates the air conditioning system and the battery pack cooling system to form two cooling systems. This fully utilizes the vehicle's air conditioning system. If the battery pack cooling system (the first cooling system) cannot reduce the battery pack's operating temperature to the optimal level, the second cooling system activates to cool the coolant in the first cooling system, thereby improving cooling efficiency and enhancing the battery pack's operating efficiency.

[0021] 2. The battery pack cooling and air conditioning system integrated device provided by the present invention sets a temperature sensor and a cooling module in the battery pack to achieve more accurate battery temperature control.

[0022] 3. The battery pack cooling and air conditioning system integrated device provided by the utility model has a temperature sensor installed in the cooling liquid storage tank. When the temperature of the coolant in the cooling liquid storage tank is not enough to effectively cool the battery pack, the second cooling system is activated and the air conditioning system is used to cool the coolant, so that the battery pack is always kept within the optimal operating temperature range. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A schematic structural diagram of the battery pack cooling and air conditioning system integration device provided by the present invention is shown.

[0024] Explanation of the accompanying symbols: 11-cooling module, 12-cooling storage tank, 13-battery pack cooling water pump, 14-battery pack water inlet pipe, 15-battery pack water outlet pipe, 16-radiator, 17-radiator water outlet pipe, 18-degassing pipe, 21-air conditioning assembly, 22-PTC heater, 23-three-way valve, 24-PTC water inlet pipe, 25-air conditioning water inlet pipe, 26-refrigeration machine water outlet pipe, 27-motor cooling water pump. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solutions and advantages of the implementation of the present invention clearer, the technical solutions in the embodiments of the present invention are described in more detail below in conjunction with the drawings in the embodiments of the present invention. The described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. The embodiments described below with reference to the drawings are exemplary and are intended to be used to explain the present invention, and should not be understood as limitations on the present invention. Based on the embodiments in the present invention, all other embodiments obtained by those skilled in the art without making creative work are within the scope of protection of the present invention. The embodiments of the present invention are described in detail below in conjunction with the drawings:

[0026] In the description of this utility model, it should be understood that, unless otherwise specified, "plurality" means two or more. Terms such as "center," "longitudinal," "lateral," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer" indicate positions or relationships based on those shown in the accompanying drawings and are intended solely for the purpose of facilitating the description of this utility model and simplifying the description. They are not intended to indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation, and therefore should not be construed as limiting the scope of protection of this utility model. Furthermore, terms such as "first," "second," and the like are used for descriptive purposes only and should not be construed as indicating or implying relative importance. It should also be noted that, unless otherwise specified or limited, the terms "mounted," "connected," and "connected" should be interpreted broadly, meaning, for example, fixedly connected, removably connected, or integrally connected; directly connected, or indirectly connected through an intermediary. Those skilled in the art will understand the specific meanings of these terms in this utility model based on the specific circumstances.

[0027] Figure 1 The schematic diagram of the structure of the battery pack cooling and air conditioning system integration device provided by the present invention is shown. The device includes a control system, a first cooling system and a second cooling system. The control system is connected to and controls the working status of the first cooling system and the second cooling system at the same time. When the temperature of the battery pack is too high during operation, the control system controls the first cooling system to start and cool the battery pack in a cycle until the optimal temperature required for the battery pack to operate is reached. When the first cooling system cannot reduce the operating temperature of the battery pack to the optimal temperature, the control system controls the second cooling system to start and cool the coolant in the first cooling system until the coolant is cooled to the expected temperature, and then starts the first cooling system cycle, or directly cools the battery pack until the optimal temperature required for the battery pack to operate is reached.

[0028] The first cooling system includes a cooling module 11, a battery pack cooling water pump 13, a cooling reservoir 12, and a radiator 16. The cooling reservoir 12 stores coolant, which is connected to the cooling module 11 via the battery pack cooling water pump 13 and the battery pack water inlet pipe 14. The cooling module 11 is connected to the radiator 16 via the battery pack water outlet pipe 15. The radiator 16's radiator outlet pipe 17 is connected to the cooling reservoir 12, forming the first cooling system. The cooling module 11 is located within the battery pack and is used to cool the battery pack. The cooling reservoir 12 is equipped with a degassing pipe 18 to remove excess gas. Specifically, a first temperature sensor is located within the battery pack and is connected to the control system to monitor the battery pack temperature and transmit data to the control system. When the battery pack temperature becomes too high during operation, the first cooling system activates, the battery pack cooling water pump 13 begins operating, and coolant flows through the battery pack water inlet pipe 14 to the cooling module 11. The cooling module 11 cools the battery pack, causing the coolant temperature to rise. The heated coolant then flows through the battery pack outlet pipe 15 to the radiator 16. After the radiator cools the heated coolant, the coolant flows back to the cooling tank 12, forming the first cooling cycle. This cycle repeats until the battery pack reaches the optimal operating temperature.

[0029] The second cooling system includes a PTC heater 22 and an air conditioning assembly 21. The cooling reservoir 12 is connected to the PTC heater 22 via the radiator outlet pipe 17, a three-way valve 23, and a PTC inlet pipe 24. The PTC heater 22 is then connected to the air conditioning assembly 21 via the air conditioning inlet pipe 25. The air conditioning assembly 21 is then connected to the cooling reservoir 12 via the refrigerator outlet pipe 26, forming the second cooling system. The PTC heater 22 ensures proper operation of all components at low temperatures. The air conditioning assembly 21 cools the coolant in the first cooling system. The radiator outlet pipe 17 is connected to the cooling reservoir 12 and the three-way valve 23 via a motor cooling water pump 27. Specifically, the motor cooling water pump 27 controls the flow of coolant from the radiator to the cooling reservoir, or the flow of coolant within the cooling reservoir to the three-way valve. Specifically, a second temperature sensor is located within the cooling reservoir 12 and is connected to the control system to monitor the temperature of the coolant within the cooling reservoir 12 and transmit the data to the control system. If the first cooling system fails to lower the battery pack's operating temperature to its optimal level, the second cooling system activates, and the air conditioning assembly 21 begins operating. Coolant in the cooling reservoir 12 is transported via the radiator outlet pipe 17, the three-way valve, and the air conditioning inlet pipe 25 to the air conditioning assembly 21. The air conditioning assembly 21 cools the coolant, which is then returned to the cooling reservoir 12 via the chiller outlet pipe 26, forming a second cooling cycle. This cycle continues until the coolant reaches the desired temperature. The first cooling system is then activated again, continuing the cycle until the battery pack reaches its optimal operating temperature. If the first cooling system again fails to lower the battery pack's operating temperature, the second cooling system is activated again. Alternatively, the coolant returned to the cooling reservoir 12 can be directly fed into the cooling module 11 via the battery pack inlet pipe 14 to cool the battery pack. The chiller outlet pipe 26 and the battery pack inlet pipe 14 are both connected to the cooling reservoir 12 via the battery pack cooling water pump 13. That is, the battery pack cooling water pump 13 controls the coolant of the air conditioning assembly to flow to the cooling liquid storage tank, and / or the coolant in the cooling liquid storage tank to flow to the cooling module.

[0030] The above embodiments are only used to illustrate the technical solution of the present invention and are not intended to limit the scope of implementation of the present invention. Any equivalent changes and modifications made within the scope of protection of the present invention should be considered to fall within the scope of protection of the present invention.

Claims

1. A battery pack cooling and air conditioning system integrated device, characterized in that: The device includes a control system, a first cooling system and a second cooling system connected to the control system; The first cooling system includes a cooling module (11) disposed in the battery pack, for cooling the battery pack; The second cooling system includes an air conditioning assembly (21) for cooling the coolant in the first cooling system.

2. The battery pack cooling and air conditioning system integrated device according to claim 1, characterized in that: The first cooling system further includes a battery pack cooling water pump (13), a cooling liquid storage tank (12) and a radiator (16); The cooling liquid storage tank (12) stores the cooling liquid, and the cooling liquid storage tank (12) is connected to the cooling module (11) via the battery pack cooling water pump (13) and the battery pack water inlet pipe (14). The cooling module (11) is connected to the radiator (16) via the battery pack water outlet pipe (15). The radiator water outlet pipe (17) of the radiator (16) is connected to the cooling liquid storage tank (12), thereby forming the first cooling system.

3. The battery pack cooling and air conditioning system integrated device according to claim 2, characterized in that: The cooling liquid storage tank (12) is provided with a degassing pipe (18).

4. The battery pack cooling and air conditioning system integrated device according to claim 2, characterized in that: When the temperature of the battery pack is too high during operation, the battery pack cooling water pump (13) starts to work, transports the coolant in the cooling liquid storage tank (12) to the cooling module (11), cools the battery pack, and repeatedly circulates through the radiator (16) until the optimal temperature required for the battery pack to operate is reached.

5. The battery pack cooling and air conditioning system integrated device according to claim 2, characterized in that: The second cooling system further includes a PTC heater (22); The cooling liquid storage tank (12) is connected to the PTC heater (22) via the radiator water outlet pipe (17), the three-way valve (23) and the PTC water inlet pipe (24); the PTC heater (22) is connected to the air conditioning assembly (21) via the air conditioning water inlet pipe (25); and the air conditioning assembly (21) is connected to the cooling liquid storage tank (12) via the refrigerator water outlet pipe (26), thereby forming the second cooling system.

6. The battery pack cooling and air conditioning system integrated device according to claim 5, characterized in that: The refrigerator water outlet pipe (26) and the battery pack water inlet pipe (14) are simultaneously connected to the cooling liquid storage tank (12) via the battery pack cooling water pump (13).

7. The battery pack cooling and air conditioning system integrated device according to claim 5, characterized in that: The radiator water outlet pipe (17) is connected to the cooling liquid storage tank (12) and the three-way valve (23) respectively through the motor cooling water pump (27).

8. The battery pack cooling and air conditioning system integrated device according to claim 5, characterized in that: When the first cooling system cannot reduce the working temperature of the battery pack to the optimal temperature, the air conditioning assembly (21) starts to work, and the coolant in the cooling liquid storage tank (12) is transported to the air conditioning assembly (21) through the radiator outlet pipe (17) and the air conditioning water inlet pipe (25) for cooling, and then transported back to the cooling liquid storage tank (12) through the refrigerator outlet pipe (26), and the cycle is continued until the coolant is cooled to the expected temperature; then the first cooling system is started to circulate until the optimal temperature required for the battery pack to work is reached.

9. The battery pack cooling and air conditioning system integrated device according to claim 1, characterized in that: A first temperature sensor is provided in the battery pack, and the first temperature sensor is connected to the control system.

10. The battery pack cooling and air conditioning system integrated device according to claim 2, characterized in that: A second temperature sensor is provided in the cooling liquid storage tank (12), and the second temperature sensor is connected to the control system.

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