Temperature control type water cooling device of new energy automobile motor

Abstract

The embodiment of the utility model discloses a temperature control type water cooling device of a new energy automobile motor. The temperature control type water cooling device comprises a reflux tank, a heat exchanger, a heating tank, a water pump and a rack, a backflow pipe used for being connected to a motor is led out of the surface of the backflow tank, a first pipeline is arranged in the heat exchanger and connected with the backflow tank through a liquid inlet pipe, a heater is arranged in the heating tank, the heating tank is connected with the first pipeline of the heat exchanger through a liquid outlet pipe, and a first temperature sensor is installed on the heating tank. The input end and the output end of the water pump are connected with a conveying pipe and a liquid supply pipe respectively, the other end of the conveying pipe is connected with the heating tank, the other end of the liquid supply pipe is used for being connected with a motor, and the rack is used for supporting and fixing the backflow tank, the heat exchanger, the heating tank and the water pump. The temperature control type water cooling device of the new energy automobile motor provided by the utility model can adjust the temperature of the motor according to the working condition of the motor.

Description

Technical Field

[0001] The utility model relates to a water cooling device, in particular to a temperature-controlled water cooling device for a new energy vehicle motor. Background Art

[0002] The motor is the core component of new energy vehicles, mainly providing power for new energy vehicles. The efficiency and life of the motor are the core indicators for considering the performance of the motor. With the continuous development of the new energy vehicle industry, the requirements for motor speed, torque, power and other indicators are getting higher and higher, which means that the requirements for the efficiency and durability tests of new energy motors are also getting higher and higher.

[0003] In the prior art, new energy motors are usually tested on high-speed benches. During the test, due to the high speed and torque of the motor, the heat generated inside the motor will cause the motor temperature to rise rapidly. In order to be able to test normally, it is generally required to reasonably and effectively control the motor temperature to prevent the motor from being damaged due to demagnetization under high temperature. At present, water coolers are mainly used to transport antifreeze into the motor to cool the motor. However, the heat generated by the motor under different operating conditions is different, and the optimal operating temperature is also different. However, the temperature and flow rate of the antifreeze provided by the existing water coolers are both constant values, and the temperature and flow rate of the antifreeze cannot be used to dynamically adjust the motor temperature in real time according to the operating conditions of the motor.

[0004] The information disclosed in this background technology section is only intended to increase the understanding of the overall background of the present invention, and should not be regarded as acknowledging or suggesting in any form that the information constitutes the prior art already known to a person skilled in the art. Utility Model Content

[0005] The utility model aims to provide a temperature-controlled water cooling device for a new energy vehicle motor, which can adjust the motor temperature according to the working conditions of the motor.

[0006] To achieve the above-mentioned purpose, the utility model provides a temperature-controlled water cooling device for a new energy vehicle motor, including a reflux tank, a heat exchanger, a heating tank, a water pump and a rack. A reflux pipe for connecting to the motor is led out from the surface of the reflux tank, a first pipeline is provided inside the heat exchanger, and the first pipeline is connected to the reflux tank through a liquid inlet pipe, a heater is provided inside the heating tank, and the heating tank is connected to the first pipeline of the heat exchanger through a liquid outlet pipe, and a first temperature sensor is installed on the heating tank. The input end and the output end of the water pump are respectively connected to a delivery pipe and a liquid supply pipe, the other end of the delivery pipe is connected to the heating tank, and the other end of the liquid supply pipe is used to connect to the motor, and the rack is used to support and fix the reflux tank, the heat exchanger, the heating tank and the water pump.

[0007] In one or more embodiments, a second pipeline separated from the first pipeline is provided inside the heat exchanger, the second pipeline can exchange heat with the first pipeline, and a cooling water input pipe and a cooling water return pipe are connected to the second pipeline.

[0008] In one or more embodiments, a cooling water proportional valve is installed on the cooling water input pipe.

[0009] In one or more embodiments, the reflux tank is equipped with expansion kettles and air vents that are spaced apart.

[0010] In one or more embodiments, a drain valve is installed on the heating tank.

[0011] In one or more embodiments, the temperature-controlled water cooling device of the new energy vehicle motor also includes an overflow pipe, one end of which is connected to the heating tank and the other end is connected to the liquid supply pipe, and an overflow valve is installed on the overflow pipe.

[0012] In one or more embodiments, a liquid supply proportional valve is installed on the liquid supply pipe.

[0013] In one or more embodiments, a flow meter is installed on the liquid supply pipe.

[0014] In one or more embodiments, a second temperature sensor is installed on the liquid supply pipe.

[0015] In one or more embodiments, the connection portion between the overflow pipe and the liquid supply pipe is close to the output end of the water pump, and the liquid supply proportional valve, the flow meter and the second temperature sensor are arranged close to the motor.

[0016] Compared with the prior art, according to the temperature-controlled water cooling device for the motor of a new energy vehicle of an embodiment of the utility model, the antifreeze can flow into the reflux tank through the reflux pipe after cooling the motor, and the antifreeze flows into the first pipeline inside the heat exchanger through the liquid inlet pipe to cool the antifreeze. After cooling, the antifreeze flows into the heating tank, and the cooled antifreeze is heated to a suitable temperature by the heater in the heating tank, and the first temperature sensor is used to detect whether the antifreeze reaches a suitable temperature, and finally the antifreeze is transported into the motor by the water pump to adjust the motor temperature. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic structural diagram of a temperature-controlled water cooling device for a new energy vehicle motor according to an embodiment of the utility model;

[0018] Figure 2 It is a partial structural schematic diagram of a temperature-controlled water cooling device for a new energy vehicle motor according to one embodiment of the utility model.

[0019] Among them, 1. reflux tank, 101. expansion kettle, 102. air vent, 2. heat exchanger, 201. cooling water input pipe, 202. cooling water reflux pipe, 203. cooling water proportional valve, 3. heating tank, 301. heater, 302. drain valve, 303. first temperature sensor, 4. water pump, 5. motor, 6. liquid inlet pipe, 7. liquid outlet pipe, 8. delivery pipe, 9. liquid supply pipe, 10. reflux pipe, 11. overflow pipe, 12. liquid supply proportional valve, 13. flow meter, 14. second temperature sensor, 15. overflow valve, 16. rack. DETAILED DESCRIPTION

[0020] The specific implementation modes of the present invention are described in detail below in conjunction with the accompanying drawings, but it should be understood that the protection scope of the present invention is not limited by the specific implementation modes.

[0021] Unless explicitly stated otherwise, throughout the specification and claims, the term “comprise” or variations such as “include” or “comprising”, etc., will be understood to include the stated elements or components but not to exclude other elements or components.

[0022] like Figure 1-Figure 2 As shown, a temperature-controlled water cooling device for a new energy vehicle motor according to an embodiment of the utility model includes a reflux tank 1, a heat exchanger 2, a heating tank 3, a water pump 4 and a frame 16. A reflux pipe 10 for connecting to a motor 5 is led out from the surface of the reflux tank 1. The interior of the heat exchanger 2 has a first pipeline and a second pipeline isolated from each other, the first pipeline is connected to the reflux tank 1 through a liquid inlet pipe 6, and the second pipeline is connected to a cooling water input pipe 201 and a cooling water return pipe 202. A heater 301 is provided inside the heating tank 3, the heating tank 3 is connected to the first pipeline of the heat exchanger 2 through a liquid outlet pipe 7, and a first temperature sensor 303 is installed on the heating tank 3. The input end and the output end of the water pump 4 are respectively connected to a delivery pipe 8 and a liquid supply pipe 9, the other end of the delivery pipe 8 is connected to the heating tank 3, and the other end of the liquid supply pipe 9 is used to connect to the motor 5. The frame 16 is used to support and fix the reflux tank 1, the heat exchanger 2, the heating tank 3 and the water pump 4.

[0023] In the above embodiment, after the antifreeze cools the motor 5, it can flow into the reflux tank 1 through the reflux pipe 10, and then the antifreeze flows into the first pipeline inside the heat exchanger 2 through the liquid inlet pipe 6, and the antifreeze exchanges heat with the pipe wall of the first pipeline to reduce its own temperature. After the antifreeze is cooled, the antifreeze flows into the heating tank 3 through the liquid outlet pipe 7. The heater 301 in the heating tank 3 appropriately heats the cooled antifreeze to a preset temperature. During this process, the temperature of the antifreeze in the heating tank 3 can be monitored in real time by the first temperature sensor 303. After the antifreeze is heated to the preset temperature, the antifreeze is transported into the motor 5 through the water pump 4. After the antifreeze absorbs the heat of the motor 5, it can cool the motor 5. Then the heated antifreeze flows into the reflux tank 1 again through the reflux pipe 10, and flows into the motor 5 again after cooling again to adjust the temperature of the motor 5.

[0024] It should be noted that the preset temperature of the antifreeze solution is determined according to the working condition of the motor 5 . Different working conditions of the motor 5 correspond to different optimal antifreeze solution temperatures, and the optimal antifreeze solution temperature is the preset temperature.

[0025] In one embodiment, a second pipeline separated from the first pipeline is provided inside the heat exchanger 2, and a cooling water input pipe 201 and a cooling water return pipe 202 are connected to the second pipeline, and the second pipeline can exchange heat with the first pipeline. In this way, after the cooling water enters the second pipeline through the input pipe 201, the first pipeline can be cooled, thereby improving the heat exchange efficiency between the first pipeline and the antifreeze liquid.

[0026] like Figure 1 As shown, a cooling water proportional valve 203 is installed on the cooling water input pipe 201, and the cooling water proportional valve 203 can control the cooling water flow in the cooling water input pipe 201, and further control the cooling effect of the heat exchanger 2 on the high-temperature antifreeze liquid.

[0027] In one embodiment, the reflux tank 1 is provided with an expansion kettle 101 and a vent hole 102 arranged at intervals. Antifreeze can be added to the reflux tank 1 through the expansion kettle 101, and then the antifreeze can circulate between the reflux tank 1, the heat exchanger 2, the heating tank 3 and the motor 5 to cool the motor 5. The vent hole 102 can balance the air pressure in the reflux tank 1 and speed up the flow rate of the antifreeze in the expansion kettle 101 when it flows into the reflux tank 1.

[0028] In one embodiment, a drain valve 302 is installed on the heating tank 3, and the antifreeze in the heating tank 3 can be recovered through the drain valve 302. At the same time, in order to improve the recovery efficiency of the antifreeze, the drain valve 302 can be set at the bottom of the heating tank 3.

[0029] In one embodiment, if Figure 2As shown, the temperature-controlled water cooling device for the motor of a new energy vehicle according to one embodiment of the utility model further includes an overflow pipe 11, one end of which is connected to the heating tank 3, and the other end is connected to the liquid supply pipe 9. When the flow rate of the antifreeze in the liquid supply pipe 9 is insufficient to meet the cooling demand of the motor 5, the antifreeze in the heating tank 3 can be transported into the liquid supply pipe 9 through the overflow pipe 11, thereby increasing the flow rate of the antifreeze in the liquid supply pipe 9, so that the antifreeze entering the motor 5 can meet the cooling demand of the motor 5.

[0030] like Figure 2 As shown, an overflow valve 15 is installed on the overflow pipe 11. The overflow valve 15 can not only control the connection state between the overflow pipe 11 and the liquid supply pipe 9, but also adjust the antifreeze flow in the overflow pipe 11, so that the operator can reasonably and accurately control the increase of the antifreeze flow in the liquid supply pipe 9.

[0031] In one embodiment, a liquid supply proportional valve 12 is installed on the liquid supply pipe 9. The liquid supply proportional valve 12 can adjust the flow rate of the antifreeze liquid in the liquid supply pipe 9, so that the flow rate of the antifreeze liquid flowing from the liquid supply pipe 9 into the motor 5 is controllable, and thus the operator can control the flow rate of the antifreeze liquid entering the motor 5 within a reasonable range according to different working conditions of the motor 5.

[0032] like Figure 2 As shown, a flow meter 13 is installed on the liquid supply pipe 9. The flow meter 13 can clearly detect and display the real-time flow of the antifreeze liquid in the liquid supply pipe 9. After the operator adjusts the liquid supply proportional valve 12, it is convenient for the operator to judge whether the antifreeze flow is adjusted in place.

[0033] Furthermore, a second temperature sensor 14 is installed on the liquid supply pipe 9, and the second temperature sensor 14 is used to detect the temperature of the antifreeze in the liquid supply pipe 9. If the temperature of the antifreeze in the liquid supply pipe 9 is lower than the temperature of the antifreeze in the heating tank 3, it means that the antifreeze has lost some heat when flowing in the delivery pipe 8, the liquid supply pipe 9 or the overflow pipe 11. Therefore, the heating temperature of the heater 301 can be appropriately increased to compensate for the heat loss during the flow of the antifreeze, so that the antifreeze that finally flows into the motor 5 can reach the preset temperature.

[0034] like Figure 2 As shown, the connection part between the overflow pipe 11 and the liquid supply pipe 9 is close to the output end of the water pump 4, and the liquid supply proportional valve 12, the flow meter 13 and the second temperature sensor 14 are arranged close to the motor 5, so that the antifreeze liquid in the overflow pipe 11 will flow through the liquid supply proportional valve 12, the flow meter 13 and the second temperature sensor 14 only after the antifreeze liquid in the liquid supply pipe 9 merges, so that the liquid supply proportional valve 12 and the second temperature sensor 14 can accurately control the flow rate and temperature of the antifreeze liquid finally input into the motor 5.

[0035] The foregoing description of specific exemplary embodiments of the utility model is for the purpose of illustration and demonstration. These descriptions are not intended to limit the utility model to the precise form disclosed, and it is clear that many changes and variations can be made as taught above. The purpose of selecting and describing the exemplary embodiments is to explain the specific principles of the utility model and its practical application, so that those skilled in the art can realize and utilize various different exemplary embodiments of the utility model and various different options and changes. The scope of the utility model is intended to be defined by the claims and their equivalents.

Claims

1. A temperature-controlled water cooling device for a new energy vehicle motor, characterized in that: include: A reflux tank (1), a reflux pipe (10) extending from the surface of the reflux tank for connecting to the motor (5); A heat exchanger (2) is provided with a first pipeline inside, and the first pipeline is connected to the reflux tank (1) through a liquid inlet pipe (6); A heating tank (3) having a heater (301) therein, the heating tank (3) being connected to a first pipeline of a heat exchanger (2) via a liquid outlet pipe (7), and a first temperature sensor (303) being installed on the heating tank (3); A water pump (4), the input end and the output end of which are respectively connected to a delivery pipe (8) and a liquid supply pipe (9), the other end of the delivery pipe (8) is connected to the heating tank (3), and the other end of the liquid supply pipe (9) is used to be connected to the motor (5); and A frame (16) is used to support and fix the reflux tank (1), the heat exchanger (2), the heating tank (3) and the water pump (4).

2. The temperature-controlled water cooling device for the new energy vehicle motor according to claim 1, characterized in that: A second pipeline separated from the first pipeline is provided inside the heat exchanger (2), the second pipeline is capable of heat exchange with the first pipeline, and a cooling water input pipe (201) and a cooling water return pipe (202) are connected to the second pipeline.

3. The temperature-controlled water cooling device for the new energy vehicle motor according to claim 2, characterized in that: A cooling water proportional valve (203) is installed on the cooling water input pipe (201).

4. The temperature-controlled water cooling device for the new energy vehicle motor according to claim 1, characterized in that: The reflux tank (1) is provided with an expansion kettle (101) and air holes (102) arranged at intervals.

5. The temperature-controlled water cooling device for the new energy vehicle motor according to claim 1, characterized in that: The heating tank (3) is provided with a drain valve (302).

6. The temperature-controlled water cooling device for the new energy vehicle motor according to claim 1, characterized in that: It also comprises an overflow pipe (11), one end of which is connected to the heating tank (3) and the other end of which is connected to the liquid supply pipe (9), and an overflow valve (15) is installed on the overflow pipe (11).

7. The temperature-controlled water cooling device for the new energy vehicle motor according to claim 6, characterized in that: A liquid supply proportional valve (12) is installed on the liquid supply pipe (9).

8. The temperature-controlled water cooling device for the new energy vehicle motor according to claim 7, characterized in that: A flow meter (13) is installed on the liquid supply pipe (9).

9. The temperature-controlled water cooling device for the new energy vehicle motor according to claim 8, characterized in that: A second temperature sensor (14) is installed on the liquid supply pipe (9).

10. The temperature-controlled water cooling device for the new energy vehicle motor according to claim 9, characterized in that: The connection portion between the overflow pipe (11) and the liquid supply pipe (9) is close to the output end of the water pump (4), and the liquid supply proportional valve (12), the flow meter (13) and the second temperature sensor (14) are arranged close to the motor (5).

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