Thermal management system and vehicle

Abstract

The utility model discloses a thermal management system, including an air conditioning system, a battery cooling system connected to a battery pack, a low-temperature cooling system connected to a drive motor, and an auxiliary heating and cooling system, wherein the auxiliary heating and cooling system includes a water heater and a double-effect heat exchanger connected to each other, and the double-effect heat exchanger is connected to the battery cooling system. The thermal management system of the utility model can improve the heating comfort of the whole vehicle, reduce the cost of the thermal management architecture, reduce the energy consumption of the whole vehicle, and improve the endurance by arranging components such as a water heater and a double-effect heat exchanger. The utility model also discloses a vehicle.

Description

Technical Field

[0001] The utility model belongs to the technical field of automobiles, and specifically relates to a thermal management system and a vehicle. Background Art

[0002] At present, the coolant system of the vehicle thermal management system usually uses coolant to cool the battery and the motor, or uses coolant to heat the battery through the heating plate inside the battery pack. The passenger compartment uses an air heater to heat the air to achieve heating of the passenger compartment. The air is directly heated, resulting in poor heating comfort of the entire vehicle.

[0003] At the same time, with the development of new energy vehicles, the demand for in-vehicle thermal management systems is increasing, and the number of components required for thermal management systems is also increasing. If all components are arranged in the form of separate parts, the multiple parts of the coolant system are independent of each other and require external pipes for connection, resulting in the coolant system occupying more space in the vehicle, making it inconvenient to install other components in the vehicle, reducing the utilization rate of the vehicle's installation space, and resulting in higher vehicle production costs.

[0004] For example, the patent document with publication number CN116834498A discloses a thermal management system. In the first defrost mode, the second heat exchange part is connected to the third heat exchanger, the fourth heat exchange part is connected to the fourth heat exchanger, the fifth heat exchanger is connected to the motor heat exchange device, and the fourth heat exchanger exchanges heat with the atmospheric environment; in the second defrost mode, the second heat exchange part, the fourth heat exchanger and the third heat exchanger are connected, the fourth heat exchange part, the fifth heat exchanger and the motor heat exchange device are connected, and the fifth heat exchanger exchanges heat with the atmospheric environment. The thermal management system can alternately operate the first defrost mode and the second defrost mode, delay or avoid frosting of the fourth heat exchanger and the fifth heat exchanger, and can also make full use of the heat of the atmospheric environment to ensure the heating demand of the passenger compartment. The technical solution disclosed in the patent document cannot solve the technical problems recorded above. Utility Model Content

[0005] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model provides a thermal management system, the purpose of which is to reduce costs.

[0006] In order to solve the above technical problems, the technical solution adopted by the utility model is: a thermal management system, including an air-conditioning system, a battery cooling system connected to the battery pack, a low-temperature cooling system connected to the drive motor, and an auxiliary heating and cooling system, the auxiliary heating and cooling system including a connected water heater and a double-effect heat exchanger, and the double-effect heat exchanger is connected to the battery cooling system.

[0007] The auxiliary heating and cooling system also includes a three-way proportional valve and a heater core. The three-way proportional valve is arranged between the water heater and the double-effect heat exchanger, and the heater core is arranged between the three-way proportional valve and the double-effect heat exchanger.

[0008] The low-temperature cooling system includes a low-temperature radiator, a cooling fan and a first water pump. The drive motor is arranged between the first water pump and the low-temperature radiator. The first water pump is connected to the drive motor and the low-temperature radiator.

[0009] A water temperature sensor is arranged on the pipeline connecting the driving motor and the low-temperature radiator.

[0010] The air conditioning system comprises an electric compressor, a condenser and an indoor evaporator. The condenser is arranged between the low-temperature radiator and the radiating fan. The electric compressor is connected with the condenser and the indoor evaporator.

[0011] The battery cooling system includes a second water pump connected to the double-effect heat exchanger and the battery pack.

[0012] The auxiliary heating and cooling system also includes a third water pump, which is connected to the water heater and the double-effect heat exchanger. The three-way proportional valve, the first water pump, the second water pump and the third water pump are integrated.

[0013] The three-way proportional valve, the first water pump, the second water pump and the third water pump are arranged on the same cooling assembly, and the cooling assembly includes a module upper layer flow channel plate and a module lower layer flow channel plate connected to each other.

[0014] The cooling assembly also includes a module kettle upper cover and a module kettle lower cover connected to each other, and the module upper flow channel plate is connected to the module kettle lower cover.

[0015] The utility model also provides a vehicle, comprising the thermal management system.

[0016] The thermal management system of the utility model can improve the heating comfort of the whole vehicle by arranging components such as a water heater and a double-effect heat exchanger, reduce the cost of the thermal management architecture, reduce the energy consumption of the whole vehicle, and improve the endurance. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the thermal management system of the utility model;

[0018] Figure 2 It is a schematic diagram of the structure of the thermal management integrated module;

[0019] The marks in the above figures are: 1. low-temperature radiator; 2. condenser; 3. cooling fan; 4. front drive motor; 5. rear drive motor; 6. first water temperature sensor; 7. second water temperature sensor; 8. first water pump; 9. first refrigerant pressure sensor; 10. electric compressor; 11. expansion tank; 12. second water pump; 13. battery pack; 14. double-effect heat exchanger; 15. first electronic expansion valve; 16. second refrigerant pressure sensor; 17. three-way proportional valve; 18. water heating heater; 19. third water pump; 20. second electronic expansion valve; 21. indoor evaporator; 22. third water temperature sensor; 23. heater core; 24. module kettle upper cover; 25. module kettle lower cover; 26. module upper flow channel plate; 27. module lower flow channel plate; 28. water pump. DETAILED DESCRIPTION

[0020] The specific implementation methods of the utility model are further explained in detail below with reference to the accompanying drawings through the description of embodiments, with the aim of helping technicians in the field to have a more complete, accurate and in-depth understanding of the concept and technical solution of the utility model and facilitating its implementation.

[0021] It should be noted that when an element is referred to as being "fixed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower" and similar expressions used in this article are for illustrative purposes only.

[0022] It should be noted that, in the following embodiments, the “first”, “second” and “third” mentioned do not represent an absolute distinction in structure and / or function, nor do they represent a sequence of execution, but are merely for the convenience of description.

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly connected by technicians in the technical field to which the present invention belongs. The terminology used in the specification of the present invention is for the purpose of describing specific embodiments and is not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0024] like Figure 1 As shown, the utility model provides a thermal management system, including an air-conditioning system, a battery cooling system connected to a battery pack 13, a low-temperature cooling system connected to a drive motor, and an auxiliary heating and cooling system, wherein the auxiliary heating and cooling system includes a water heater 18 and a double-effect heat exchanger 14 connected thereto, and the double-effect heat exchanger 14 is connected to the battery cooling system.

[0025] Specifically, if Figure 1 As shown, the low-temperature cooling system includes a low-temperature radiator 1, a cooling fan 3 and a first water pump 8, the driving motor is arranged between the first water pump 8 and the low-temperature radiator 1, and the first water pump 8 is connected to the driving motor and the low-temperature radiator 1. A water temperature sensor is arranged on the pipeline connecting the driving motor and the low-temperature radiator 1.

[0026] like Figure 1 As shown, two drive motors are provided, and the two drive motors are respectively provided on the vehicle, the front drive motor 4 is used to drive the front wheels of the vehicle, and the rear drive motor 5 is used to drive the rear wheels of the vehicle. One end of the first water pump 8 is connected to one end of the low-temperature radiator 1, and the other end of the first water pump 8 is connected to one end of the two drive motors, and the other end of the two drive motors is connected to the other end of the low-temperature radiator 1. After the first water pump 8 is operated, the coolant flows between the drive motor and the low-temperature radiator 1 to meet the heat dissipation demand of the drive motor. The cooling fan 3 is arranged relative to the low-temperature radiator 1, and the cooling fan 3 is used to cool the low-temperature radiator 1.

[0027] like Figure 1 As shown, the battery cooling system includes a second water pump 12, and the second water pump 12 is connected to the double-effect heat exchanger 14 and the battery pack 13. The water inlet of the second water pump 12 is connected to the water outlet of the double-effect heat exchanger 14, the water outlet of the second water pump 12 is connected to the water inlet of the battery pack 13, and the water outlet of the battery pack 13 is connected to the water inlet of the double-effect heat exchanger 14. By connecting with the water inlet and outlet of the battery pack 13, the heating and cooling functions of the battery can be met, and the air-conditioning system compressor is refrigerated, and heat is exchanged with the coolant through the double-effect heat exchanger 14 to achieve the effect of cooling the battery.

[0028] like Figure 1 As shown, water temperature sensors are arranged at the water inlet and outlet of the battery pack 13, and the battery pack 13 is cooled or heated by monitoring the temperature and demand of the coolant in the battery pack 13. The coolant in the battery cooling system is heated and cooled by the double-effect heat exchanger 14, so that the water temperature of the battery pack 13 is controlled within a reasonable temperature range, thereby improving the battery's endurance.

[0029] like Figure 1As shown, the air conditioning system includes a first electronic expansion valve 15, a second electronic expansion valve 20, an electric compressor 10, a condenser 2 and an indoor evaporator 21, wherein the condenser 2 is arranged between the low-temperature radiator 1 and the cooling fan 3, and the electric compressor 10 is connected to the condenser 2 and the indoor evaporator 21. The first electronic expansion valve 15 and the second electronic expansion valve 20 are arranged in parallel, one end of the first electronic expansion valve 15 and the second electronic expansion valve 20 is connected to the condenser 2, the other end of the first electronic expansion valve 15 is connected to the double-effect heat exchanger 14, the other end of the second electronic expansion valve 20 is connected to one end of the indoor evaporator 21, the other end of the indoor evaporator 21 and the double-effect heat exchanger 14 are connected to one end of the electric compressor 10, and the other end of the electric compressor 10 is connected to the condenser 2.

[0030] like Figure 1 As shown, the auxiliary heating and cooling system further includes a third water pump 19, a three-way proportional valve 17 and a warm air core 23. The three-way proportional valve 17 is arranged between the water heater 18 and the double-effect heat exchanger 14, and the warm air core 23 is arranged between the three-way proportional valve 17 and the double-effect heat exchanger 14. The water heater 18 and the double-effect heat exchanger 14 are arranged in parallel. The three-way proportional valve 17 has three connected ports. The first port of the three-way proportional valve 17 is connected to the warm air core 23, the first port of the three-way proportional valve 17 is connected to the double-effect heat exchanger 14, the third port of the three-way proportional valve 17 is connected to the water heater 18, the water heater 18 is located between the third water pump 19 and the three-way proportional valve 17, one end of the water heater 18 is connected to one end of the third water pump 19, the other end of the third water pump 19 and one end of the warm air core 23 are connected to the double-effect heat exchanger 14, and the other end of the water heater 18 is connected to the third port of the three-way proportional valve 17.

[0031] like Figure 1 As shown, the three-way proportional valve 17 is arranged behind the water heater 18. According to the requirements of the whole vehicle and the system, the flow is distributed at the three-way proportional valve 17. One side goes to the double-effect heat exchanger 14 to heat the battery pack 13 through the heat exchanger, and the other side goes to the heater core 23 to heat the passenger compartment through heat exchange between the heater core 23 and the air.

[0032] The auxiliary heating and cooling system formed by the electronic water pump, water valve (three-way proportional valve 17), water heater 18, warm air core 23 and other components are connected through pipelines to meet the heating of the battery and the passenger compartment. The three-way proportional valve 17 adjusts the flow entering the warm air core 23 and the double-effect heat exchanger 14 according to the heating requirements of the battery and the heating requirements of the cockpit to achieve on-demand distribution of heat and improve efficiency. The flow direction of the coolant in the auxiliary heating system is controlled by the three-way proportional valve 17, and the coolant is heated by the water heater 18. The distribution of the flow of the coolant is controlled by the three-way proportional valve 17. There are two coolant flows, one of which flows to the warm air core 23 to heat the passenger compartment, and the other flows to the double-effect heat exchanger 14 to heat the coolant in the battery cooling system through the heat exchanger. According to the needs of the whole vehicle, the flow distribution is dynamically adjusted to meet the needs of battery heating and warm air heating.

[0033] Preferably, the first water pump 8, the second water pump 12 and the third water pump 19 are electronic water pumps, and the three-way proportional valve 17, the first water pump 8, the second water pump 12 and the third water pump 19 are integrated.

[0034] like Figure 2 As shown, the three-way proportional valve 17, the first water pump 8, the second water pump 12 and the third water pump 19 are arranged on the same cooling assembly, and the cooling assembly includes a connected module upper flow channel plate 26 and a module lower flow channel plate 27. The cooling assembly also includes a connected module water bottle upper cover 24 and a module water bottle lower cover 25, and the module upper flow channel plate 26 is connected to the module water bottle lower cover 25. The thermal management integrated module composed of the three-way proportional valve 17, the first water pump 8, the second water pump 12 and the third water pump 19 and the cooling assembly is integrated according to the thermal management system, and the three electronic water pumps of the low-temperature cooling, battery cooling, and auxiliary heating and cooling system, as well as the three-way proportional valve 17, and the expansion tank 11 and other components are integrated. Meet the system layout requirements and functional requirements. The upper cover 24 of the module kettle and the lower cover 25 of the module kettle are fixedly connected to form a kettle assembly for containing coolant. A filling port is provided on the upper cover 24 of the module kettle, and filling can be completed through the filling port, thereby improving the assembly efficiency of the whole vehicle. The upper cover 24 of the module kettle and the lower cover 25 of the module kettle form three chambers through design, and the pressure in each chamber is the same to avoid inconsistent liquid levels. The first water pump 8, the second water pump 12 and the third water pump 19 are connected to the three chambers in the kettle assembly to pump the coolant in the kettle assembly into the low-temperature cooling system, the battery cooling system and the auxiliary heating and cooling system respectively. The first water pump 8, the second water pump 12 and the third water pump 19 are also connected to the expansion tank 11.

[0035] The thermal management integrated module isolates the three system branches through the module kettle upper cover 24, the module kettle lower cover 25, the module upper flow channel plate 26 and the module lower flow channel plate 27 to avoid mutual temperature connection and mixed liquid. The three-way water valve is fixed on the middle flow channel plate to distribute the flow of the auxiliary heating system. The thermal management integrated module realizes that the three systems share one filling port. By adding a water chamber partition on the uppermost water side of the integrated module, a filling port is realized to meet the water replenishment and degassing functions of the three cooling systems and reduce the space occupied by the system.

[0036] The thermal management integrated module has three water pumps installed on the lower flow channel plate 27 of the module. The first water pump 8, the second water pump 12 and the third water pump 19 are fixed to the lower flow channel plate 27 of the module by bolts, and the lower flow channel plate 27 of the module is fixed to the upper flow channel plate 26 of the module. The three-way proportional valve 17 is fixed to the lower cover 25 of the module kettle by bolts. Through the welding process of hot plate welding, the upper cover 24 of the module kettle and the lower cover 25 of the module kettle, the upper flow channel plate 26 of the module and the lower flow channel plate 27 of the module are welded into a whole. The internal pipelines are interconnected, and the volume of pipelines and coolant is reduced compared with traditional distributed components. The control is carried out through an external thermal management controller to realize the control of each water pump and the three-way proportional valve 17.

[0037] Compared with the prior art, the thermal management system of the above structure realizes battery heating through the water heater 18, eliminates the internal heating plate of the battery pack 13, reduces the cost of the battery pack 13, and saves layout space. The water heater 18 realizes passenger compartment heating, replaces the traditional air heater, and makes up for the bad heating experience such as "dryness" caused by the heated air of the air heater. At the same time, it improves the efficiency of the entire system, reduces the energy consumption of the whole vehicle, and improves the endurance. The thermal management integrated module is arranged in the front cabin of the vehicle and is fixed by shock-absorbing cushions during installation to effectively avoid resonance and reduce the strength of the system. The thermal management integrated module saves the layout space of the front cabin by integrating three water pumps and a three-way proportional water valve, reduces the connection between components, saves the layout space of the front cabin, reduces costs, achieves lightweight, and reduces assembly time.

[0038] The utility model also provides a vehicle, including a thermal management system of the above structure. The specific structure of the thermal management system can be referred to Figure 1 to Figure 2 Since the vehicle of the present utility model includes the thermal management system in the above embodiment, it has all the advantages of the above thermal management system.

[0039] The utility model is described above by way of example in conjunction with the accompanying drawings. It is obvious that the specific implementation of the utility model is not limited to the above-mentioned method. As long as various non-substantial improvements are made using the method concept and technical solution of the utility model, or the concept and technical solution of the utility model are directly applied to other occasions without improvement, they are all within the protection scope of the utility model.

Claims

1. A thermal management system, including an air conditioning system, a battery cooling system connected to the battery pack, and a low-temperature cooling system connected to the drive motor, characterized in that: It also includes an auxiliary heating and cooling system, which includes a water heater and a double-effect heat exchanger connected to each other, and the double-effect heat exchanger is connected to the battery cooling system.

2. The thermal management system according to claim 1, characterized in that: The auxiliary heating and cooling system also includes a three-way proportional valve and a heater core. The three-way proportional valve is arranged between the water heater and the double-effect heat exchanger, and the heater core is arranged between the three-way proportional valve and the double-effect heat exchanger.

3. The thermal management system according to claim 2, characterized in that: The low-temperature cooling system includes a low-temperature radiator, a cooling fan and a first water pump. The drive motor is arranged between the first water pump and the low-temperature radiator. The first water pump is connected to the drive motor and the low-temperature radiator.

4. The thermal management system according to claim 3, characterized in that: A water temperature sensor is arranged on the pipeline connecting the driving motor and the low-temperature radiator.

5. The thermal management system according to claim 3, characterized in that: The air conditioning system comprises an electric compressor, a condenser and an indoor evaporator. The condenser is arranged between the low-temperature radiator and the radiating fan. The electric compressor is connected with the condenser and the indoor evaporator.

6. The thermal management system according to any one of claims 3 to 5, characterized in that: The battery cooling system includes a second water pump connected to the double-effect heat exchanger and the battery pack.

7. The thermal management system according to claim 6, characterized in that: The auxiliary heating and cooling system also includes a third water pump, which is connected to the water heater and the double-effect heat exchanger. The three-way proportional valve, the first water pump, the second water pump and the third water pump are integrated.

8. The thermal management system according to claim 7, characterized in that: The three-way proportional valve, the first water pump, the second water pump and the third water pump are arranged on the same cooling assembly, and the cooling assembly includes a module upper layer flow channel plate and a module lower layer flow channel plate connected to each other.

9. The thermal management system according to claim 8, characterized in that: The cooling assembly also includes a module kettle upper cover and a module kettle lower cover connected to each other, and the module upper flow channel plate is connected to the module kettle lower cover.

10. A vehicle, characterized in that: A thermal management system comprising any one of claims 1 to 9.

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