Liquid cooling unit for integrating motor heat dissipation and waste heat recovery

Abstract

The utility model discloses a liquid cooling unit for integrating motor heat dissipation and waste heat recovery, which relates to the technical field of heat management units and comprises a case, a water tank is fixedly arranged at one end in the case, a condenser is arranged on one side of the water tank, and a compressor is arranged on one side of the condenser. By arranging the water tank, the condenser, the compressor and the plate heat exchanger, cooling water in the water tank can cool the motor and the battery at the same time, and the compressor and the condenser can cool the cooling water in the water tank, the motor and the battery at the same time. A plurality of electromagnetic valves are arranged in a pipeline among the water tank, the condenser, the compressor and the plate heat exchanger, switching of a motor and a battery cooling pipeline can be achieved by controlling opening and closing of the electromagnetic valves, the cooling pipeline between the battery and the motor is communicated, the battery can be heated by means of heat of the motor in a low-temperature environment, and the battery cooling efficiency is improved. Therefore, the waste heat is recycled.

Description

Technical Field

[0001] This utility model relates to the field of thermal management unit technology, and in particular to a liquid cooling unit for integrated motor heat dissipation and waste heat recovery. Background Technology

[0002] Common automotive liquid cooling systems are a temperature control technology for battery temperature management. However, motor / controller cooling requires a separate temperature control system, necessitating dedicated installation space throughout the vehicle. Furthermore, the energy utilization rate is not very high, leading to energy waste and low energy consumption. Additionally, when the battery requires cooling, the low ambient temperature causes frequent compressor starts and oil return issues, reducing product lifespan.

[0003] For example, a high-efficiency liquid-cooled unit for battery swapping in new energy vehicles, disclosed in CN220662286U, includes a water tank with an inlet and an outlet. A water pump is installed at the outlet, and its output is connected to both the water outlet and the evaporator. The inlet is connected to the evaporator, forming an internal circulation with the outlet. The evaporator is also connected to a refrigeration mechanism. The water outlet, after passing through the battery, connects to the water tank via the inlet, forming an external circulation. The end of the inlet furthest from the battery is connected in parallel to the water pump's output on the evaporator. This technical solution connects the water pump to the water outlet and the evaporator. The water flowing to the evaporator returns to the water tank through the inlet, forming an internal circulation. The water flowing to the outlet re-enters the evaporator through the inlet and returns to the water tank, forming an external circulation. Mixing the internal and external circulating liquids before heat exchange effectively increases the heat exchange temperature difference, significantly improving the unit's energy efficiency and providing better buffering capacity.

[0004] The above technical solution uses two independent temperature control systems for the battery and motor during use, resulting in low energy consumption, but it suffers from the problem of frequent compressor starts.

[0005] Therefore, it is necessary to invent a liquid-cooled unit that integrates motor heat dissipation and waste heat recovery to solve the above problems. Utility Model Content

[0006] The purpose of this invention is to provide a liquid cooling unit that integrates motor heat dissipation and waste heat recovery to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a liquid-cooled unit integrating motor heat dissipation and waste heat recovery, comprising a chassis, a water tank fixedly installed at one end of the chassis, a condenser installed on one side of the water tank, a compressor installed on one side of the condenser, a condensate delivery pipe installed between the compressor and the condenser, a battery water inlet pipe, a motor water inlet pipe, a battery water outlet pipe, and a motor water outlet pipe respectively installed at both ends of the outer wall of the water tank, a heat exchanger water outlet pipe installed at one end of the motor water inlet pipe, a heat exchanger water inlet pipe installed at one end of the battery water inlet pipe, a plate heat exchanger installed between the heat exchanger water inlet pipe and the heat exchanger water outlet pipe, and a connecting pipe installed between the input end of the plate heat exchanger and the compressor, an expansion valve installed between the connecting pipe, the condensate delivery pipe, and the compressor, and an electric fan installed on the outside of the water tank, and the electric fan is fixedly installed on the outside of the chassis.

[0008] Preferably, one end of the motor water outlet pipe is fixedly provided with a motor water outlet, and one end of the battery water outlet pipe and the motor water outlet pipe are provided with a battery water outlet through a four-way connector.

[0009] Preferably, one end of the motor water inlet pipe is fixedly provided with a motor water inlet, and one end of the heat exchanger water inlet pipe and the battery water inlet pipe is provided with a battery water inlet through a four-way connector.

[0010] Preferably, a sixth solenoid valve is provided between the battery water inlet pipe and the motor water inlet pipe, and a fifth solenoid valve is provided between the battery water outlet pipe and the motor water outlet pipe.

[0011] Preferably, a second solenoid valve is provided between the battery water outlet pipe and the battery water outlet, and a third solenoid valve is provided between the heat exchanger water outlet pipe and the battery water outlet.

[0012] Preferably, a fourth solenoid valve is provided between the heat exchanger water inlet pipe and the battery water inlet, and a first solenoid valve is provided between the battery water inlet pipe and the battery water inlet.

[0013] The technical effects and advantages of this utility model are as follows:

[0014] 1. This utility model, by setting up a water tank, condenser, compressor, and plate heat exchanger, allows the cooling water in the water tank to simultaneously cool the motor and battery. The compressor and condenser can simultaneously cool the cooling water in the water tank and the pipelines of the motor and battery. Multiple solenoid valves are installed in the pipelines between the water tank, condenser, compressor, and plate heat exchanger. By controlling the opening and closing of multiple solenoid valves, the cooling pipelines of the motor and battery can be switched, so as to control the opening and closing of the compressor and other components according to the usage requirements of the battery and motor. Furthermore, the cooling pipelines between the battery and the motor are connected, and the heat of the motor can be used to heat the battery in low-temperature environments to achieve waste heat recovery and utilization.

[0015] 2. By setting up a plate heat exchanger, this utility model can realize heat exchange between the water tank cooling pipes and the condenser pipes. At the same time, the plate heat exchanger can realize heat exchange between the motor cooling pipes and the battery cooling pipes, so as to use the heat of the motor to cool the battery, thereby improving the energy utilization efficiency of the device. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0017] Figure 2 This is an exploded view of the overall structure of this utility model.

[0018] Figure 3 This is a schematic diagram of the internal structure of the present invention.

[0019] Figure 4 This is a schematic diagram of the internal side of the overall structure of this utility model.

[0020] Figure 5 This is a schematic diagram of the plate heat exchanger and compressor structure of this utility model.

[0021] Figure 6 This is a bottom view of the overall structure of this utility model.

[0022] Figure 7 This is a schematic diagram of the solenoid valve structure of this utility model.

[0023] In the diagram: 1. Chassis; 2. Water tank; 3. Condenser; 4. Compressor; 5. Condensate delivery pipe; 6. Battery inlet pipe; 7. Motor inlet pipe; 8. Battery outlet pipe; 9. Motor outlet pipe; 10. Heat exchanger outlet pipe; 11. Heat exchanger inlet pipe; 12. Plate heat exchanger; 13. Connecting pipe; 14. Expansion valve; 15. Electric fan; 16. Motor outlet; 17. Battery outlet; 18. Motor inlet; 19. Battery inlet; 20. First solenoid valve; 21. Second solenoid valve; 22. Third solenoid valve; 23. Fourth solenoid valve; 24. Fifth solenoid valve; 25. Sixth solenoid valve. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] This utility model provides, for example Figure 1-7 The liquid cooling unit for integrated motor heat dissipation and waste heat recovery shown includes a chassis 1. A water tank 2 is fixedly installed at one end of the interior of the chassis 1. A condenser 3 is installed on one side of the water tank 2. A compressor 4 is installed on one side of the condenser 3. A condensate delivery pipe 5 is installed between the compressor 4 and the condenser 3. A battery water inlet pipe 6, a motor water inlet pipe 7, a battery water outlet pipe 8, and a motor water outlet pipe 9 are respectively installed at both ends of the outer wall of the water tank 2.

[0026] Specifically, a heat exchanger outlet pipe 10 is provided at one end of the motor water inlet pipe 7, a heat exchanger inlet pipe 11 is provided at one end of the battery water inlet pipe 6, a plate heat exchanger 12 is provided between the heat exchanger inlet pipe 11 and the heat exchanger outlet pipe 10, and a connecting pipe 13 is provided between the input end of the plate heat exchanger 12 and the compressor 4. An expansion valve 14 is provided between the connecting pipe 13, the condensate delivery pipe 5 and the compressor 4. The expansion valve 14 is used to cooperate with the compressor 4 to complete the refrigeration.

[0027] More specifically, an electronic fan 15 is provided on the outside of the water tank 2, and the electronic fan 15 is fixedly installed on the outside of the chassis 1. The electronic fan 15 can dissipate heat from the water tank 2.

[0028] Furthermore, a motor outlet 16 is fixedly installed at one end of the motor outlet pipe 9, a battery outlet 17 is installed at one end of the battery outlet pipe 8 and the motor outlet pipe 9 through a four-way connector, a motor inlet 18 is fixedly installed at one end of the motor inlet pipe 7, and a battery inlet 19 is installed at one end of the heat exchanger inlet pipe 11 and the battery inlet pipe 6 through a four-way connector. The battery inlet 19, battery outlet 17, motor inlet 18, and motor outlet 16 can realize the connection between the battery, the motor, and the cooling pipes.

[0029] Furthermore, a sixth solenoid valve 25 is provided between the battery water inlet pipe 6 and the motor water inlet pipe 7, and a fifth solenoid valve 24 is provided between the battery water outlet pipe 8 and the motor water outlet pipe 9. The fifth solenoid valve 24 and the sixth solenoid valve 25 can control the connection between the battery cooling pipe and the motor cooling pipe.

[0030] Meanwhile, a second solenoid valve 21 is provided between the battery water outlet pipe 8 and the battery water outlet 17. The second solenoid valve 21 can control the connection between the battery water outlet 17 and the water tank 2.

[0031] Furthermore, a third solenoid valve 22 is provided between the heat exchanger outlet pipe 10 and the battery outlet 17, and a fourth solenoid valve 23 is provided between the heat exchanger inlet pipe 11 and the battery inlet 19. The third solenoid valve 22 and the fourth solenoid valve 23 can control the connection between the plate heat exchanger 12 and the cooling pipe.

[0032] Furthermore, a first solenoid valve 20 is provided between the battery water inlet pipe 6 and the battery water inlet 19. The first solenoid valve 20 is used to control the connection between the battery cooling pipe and the water tank 2.

[0033] Working principle of this utility model:

[0034] This device is equipped with a water tank 2 and a condenser 3. The outside of the water tank 2 is equipped with a battery water inlet pipe 6, a motor water inlet pipe 7, a battery water outlet pipe 8, and a motor water outlet pipe 9. The water tank 2, the battery water inlet pipe 6, and the battery water outlet pipe 8 form the battery cooling pipeline. The water tank 2, the motor water inlet pipe 7, and the motor water outlet pipe 9 form the motor cooling pipeline. The motor water inlet pipe 7 and the battery water inlet pipe 6 are connected by a plate heat exchanger 12, so that the cooling pipelines of the motor and the battery are connected. The plate heat exchanger 12 is connected to the condenser 3 through a connecting pipe 13, so that the condenser 3 can cool down the cooling pipelines of the motor and the battery.

[0035] When the motor is cooled by the water tank 2, all solenoid valves are closed, and the battery cooling pipeline consisting of the water tank 2, the battery inlet pipe 6 and the battery outlet pipe 8 is opened. The coolant in the cooling pipeline directly enters the water tank 2, and the electric fan 15 cools the water tank 2 to achieve heat dissipation and cooling of the motor.

[0036] When the battery is cooled by the water tank 2, the second solenoid valve 21 and the fifth solenoid valve 24 are opened, and the other solenoid valves are closed. At this time, the battery cooling pipeline consisting of the water tank 2, the battery outlet pipe 8 and the battery inlet pipe 6 is opened, and the coolant in the pipeline directly enters the water tank 2. The electric fan 15 cools the water tank 2 to achieve heat dissipation and cooling of the motor.

[0037] When the battery and motor are cooled by the compressor 4, the third solenoid valve 22 and the fourth solenoid valve 23 are opened, and the other solenoid valves are closed. The cooling pipes of the battery and motor are connected to the plate heat exchanger 12. The cooling pipes between the compressor 4 and the condenser 3 are connected to the plate heat exchanger 12. At this time, the compressor 4 can dissipate heat and cool down the cooling pipes of the battery and motor.

[0038] When the battery is heated by the motor, the fifth solenoid valve 24 and the sixth solenoid valve 25 are opened, and the other solenoid valves are closed. The cooling pipes of the battery and the motor are connected, and the heat generated by the motor can directly heat the battery to realize the recovery and utilization of the motor's waste heat.

[0039] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A liquid-cooled unit for integrated motor heat dissipation and waste heat recovery, comprising a chassis (1), characterized in that: A water tank (2) is fixedly installed at one end of the interior of the casing (1). A condenser (3) is installed on one side of the water tank (2). A compressor (4) is installed on one side of the condenser (3). A condensate delivery pipe (5) is installed between the compressor (4) and the condenser (3). A battery water inlet pipe (6), a motor water inlet pipe (7), a battery water outlet pipe (8), and a motor water outlet pipe (9) are respectively installed at both ends of the outer wall of the water tank (2). A heat exchanger water outlet pipe (10) is installed at one end of the motor water inlet pipe (7). The battery... A heat exchanger inlet pipe (11) is provided at one end of the inlet pipe (6). A plate heat exchanger (12) is provided between the heat exchanger inlet pipe (11) and the heat exchanger outlet pipe (10). A connecting pipe (13) is provided between the input end of the plate heat exchanger (12) and the compressor (4). An expansion valve (14) is provided between the connecting pipe (13), the condensate delivery pipe (5) and the compressor (4). An electric fan (15) is provided on the outside of the water tank (2). The electric fan (15) is fixedly installed on the outside of the casing (1).

2. The integrated liquid-cooled unit for motor heat dissipation and waste heat recovery according to claim 1, characterized in that: One end of the motor water outlet pipe (9) is fixedly provided with a motor water outlet (16), and one end of the battery water outlet pipe (8) and the motor water outlet pipe (9) are provided with a battery water outlet (17) through a four-way connector.

3. The integrated liquid-cooled unit for motor heat dissipation and waste heat recovery according to claim 2, characterized in that: One end of the motor water inlet pipe (7) is fixedly provided with a motor water inlet (18), and one end of the heat exchanger water inlet pipe (11) and the battery water inlet pipe (6) is provided with a battery water inlet (19) through a four-way connector.

4. The integrated liquid-cooled unit for motor heat dissipation and waste heat recovery according to claim 3, characterized in that: A sixth solenoid valve (25) is provided between the battery water inlet pipe (6) and the motor water inlet pipe (7), and a fifth solenoid valve (24) is provided between the battery water outlet pipe (8) and the motor water outlet pipe (9).

5. The integrated liquid-cooled unit for motor heat dissipation and waste heat recovery according to claim 4, characterized in that: A second solenoid valve (21) is provided between the battery water outlet pipe (8) and the battery water outlet (17), and a third solenoid valve (22) is provided between the heat exchanger water outlet pipe (10) and the battery water outlet (17).

6. The integrated liquid-cooled unit for motor heat dissipation and waste heat recovery according to claim 5, characterized in that: A fourth solenoid valve (23) is provided between the heat exchanger inlet pipe (11) and the battery inlet (19), and a first solenoid valve (20) is provided between the battery inlet pipe (6) and the battery inlet (19).

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