Heat exchange device for motor test
By designing an automatic coolant replenishment heat exchange device, the problem of insufficient coolant was solved, thereby improving the accuracy of motor detection and reducing the workload of staff.
Patent Information
- Application Number
- CN202520527383.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-25
- Publication Date
- 2026-02-06
- Estimated Expiration
- 2035-03-25
AI Technical Summary
The existing cooling system consumes insufficient coolant during motor testing, affecting the accuracy of the test results and increasing the workload and labor intensity of the staff.
A heat exchange device including a liquid replenishment component, a liquid level detection component, and a control module was designed. The device automatically replenishes coolant through liquid level detection to ensure sufficient coolant and realize the recycling of coolant.
This allows for timely replenishment of coolant, ensuring the accuracy of motor test results and reducing the workload and labor intensity of staff.
Smart Images
Figure CN223882826U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to test equipment technical field especially, relates to a heat exchange device for motor test. BACKGROUND
[0002] With the continuous development of science and technology, the motor is gradually applied to each big field, such as industrial production, transportation and other fields. For the automobile in the field of transportation, the motor is one of its core components. After the production of the motor, its performance needs to be detected to verify whether the motor meets the quality and safety parameters determined by the manufacturing specification and industry standard. In the detection process of the motor, the motor will generate heat due to power-on, running or load test, and the excessive temperature may cause the motor to be damaged, affect the accuracy of the detection result, and even cause a safety accident. Therefore, the motor needs to be properly cooled during the detection process.
[0003] The existing cooling device usually uses a pipeline to connect the cooling liquid storage tank and the motor. Under the action of the oil inlet pump, the cooling liquid in the cooling liquid storage tank will flow into the motor inner cavity, thereby cooling the motor. Then the cooling liquid flows out of the motor inner cavity and, under the action of the oil outlet pump, the cooling liquid that flows through the motor will enter the radiator and return to the cooling liquid storage tank after being cooled by the radiator.
[0004] If the above cooling device is used to cool the motor that generates a large amount of heat for a long test period, the cooling liquid in the cooling device will be continuously consumed during the test process because the tested motor continuously generates heat. When the cooling liquid is insufficient, the motor cannot be fully cooled, thereby affecting the accuracy of the motor detection result. Therefore, the staff needs to continuously observe the cooling liquid content in the cooling liquid storage tank and timely supplement the cooling liquid, thereby increasing the workload and labor intensity of the staff. UTILITY MODEL CONTENT
[0005] The utility model aims at providing a heat exchange device for motor test, which can timely supplement the cooling liquid, fully cool the motor, improve the motor operation reliability, ensure the accuracy of the motor detection result, and reduce the workload and labor intensity of the staff.
[0006] To achieve the above purpose, the utility model adopts the following technical scheme:
[0007] A heat exchange device for motor test is provided, which comprises:
[0008] The liquid supplementing assembly comprises a liquid storage container and an injection mechanism. The liquid storage container is configured to store cooling liquid. The inner cavity of the liquid storage container is connected to the liquid inlet end of the injection mechanism through a pipeline.
[0009] The liquid injection assembly comprises a liquid injection container, a liquid level detection member, a liquid injection valve and a heat exchange member. The liquid injection container is arranged above the heat exchange member. The heat exchange member is provided with a first chamber and a second chamber. The liquid outlet of the liquid injection mechanism is in communication with the inner cavity of the liquid injection container. The liquid injection container and the first chamber are provided with a liquid injection pipeline. The liquid injection valve is arranged on the liquid injection pipeline. The liquid level detection member is arranged in the liquid injection container and is used for detecting the liquid level of the cooling liquid in the liquid injection container.
[0010] The cooling circulation assembly is connected between the liquid outlet of the first chamber and the liquid inlet of the second chamber, and is configured to be in series communication with the cooling cavity of the motor.
[0011] The heat dissipation circulation assembly is in communication with the liquid outlet of the second chamber at one end and in communication with the liquid inlet of the first chamber at the other end.
[0012] The control module is in communication connection with the liquid injection mechanism and the liquid level detection member.
[0013] Optionally, the liquid injection assembly further comprises a first one-way valve arranged on the liquid injection pipeline between the liquid injection valve and the first chamber.
[0014] Optionally, the motor test heat exchange device further comprises an exhaust assembly comprising an exhaust pipeline and an exhaust valve arranged on the exhaust pipeline. The inlet end of the exhaust pipeline is in communication with the liquid injection pipeline between the first one-way valve and the first chamber. The outlet end of the exhaust pipeline is in communication with the liquid injection container.
[0015] Optionally, the cooling circulation assembly comprises a first suction mechanism, a first valve and a second valve. The first chamber, the suction cavity of the first suction mechanism and the liquid inlet of the first valve are sequentially communicated by pipelines. The liquid outlet of the first valve is configured to be in communication with the cooling cavity by a pipeline. The cooling cavity is in communication with the liquid inlet of the second valve by a pipeline. The liquid outlet of the second valve is in communication with the second chamber by a pipeline.
[0016] Optionally, the cooling circulation assembly further comprises a filter connected to the pipeline between the motor and the second valve.
[0017] Optionally, the cooling circulation assembly further comprises a second one-way valve connected to the pipeline between the second valve and the second chamber.
[0018] Optionally, the motor test heat exchange device further comprises an overflow pipe. One end of the overflow pipe is in communication with the first chamber, and the other end is in communication with the liquid outlet of the first suction mechanism.
[0019] Optionally, the heat exchange device for motor testing further comprises a liquid discharge pipe and a liquid discharge valve arranged on the liquid discharge pipe, and a discharge port is arranged on the bottom wall of the liquid injection container, and one end of the liquid discharge pipe is communicated with the discharge port.
[0020] Optionally, the heat dissipation circulation assembly comprises a second injection and suction mechanism and a heat dissipation member, and the second chamber, the injection and suction cavity of the second injection and suction mechanism and the liquid inlet end of the heat dissipation member are sequentially communicated through pipelines, and the liquid outlet end of the heat dissipation member is communicated with the first chamber through a pipeline.
[0021] Optionally, the liquid level detection member comprises a liquid level sensor.
[0022] The motor testing heat exchange device provided by the utility model has the advantages that:
[0023] The utility model provides a kind of heat exchange device for motor testing, including liquid supplementing component, liquid injection component, cooling circulation component, heat dissipation circulation component and control module.When motor is tested, it needs to be cooled to motor simultaneously, and cooling circulation component is communicated with motor, under the action of cooling circulation component, cooling liquid will enter the cooling cavity of motor, after cooling to motor, cooling liquid will flow into second chamber, finally, under the action of heat dissipation circulation component, cooling liquid in second chamber is recycled after heat dissipation and enters first chamber, to realize the recycling of cooling liquid.When cooling liquid flows through the cooling cavity of motor, part of cooling liquid will be consumed, so that recycled cooling liquid cannot fill first chamber, since liquid injection container is located above heat exchange member, under the action of gravity, cooling liquid in liquid injection container will enter first chamber to fill first chamber, when liquid level detection member detects that the liquid level height of cooling liquid in liquid injection container drops to lower limit liquid level height, liquid level detection member will send signal to control module, and control module will start injection mechanism, and injection mechanism will inject cooling liquid stored in liquid storage container into liquid injection container until the liquid level height of cooling liquid reaches upper limit liquid level height.
[0024] By setting liquid supplementing component, liquid level detection member and liquid injection container, there is always sufficient cooling liquid in liquid injection container, so that liquid injection container can supplement first chamber in time, so that first chamber is always filled with cooling liquid, and then cooling liquid fills the cooling cavity of motor, fully cools motor, improves motor operation reliability, ensures the accuracy of motor detection result, and through the cooperation of control module and liquid level detection member, liquid injection container can be automatically supplemented, without long-time monitoring by staff, to reduce the workload and labor intensity of staff. BRIEF DESCRIPTION OF DRAWINGS
[0025] Figure 1 It is the structure diagram of the heat exchange device for motor testing provided by the utility model embodiment.
[0026] Fig.:
[0027] 100, motor;
[0028] 1, liquid supplement assembly; 11, liquid storage container; 12, injection mechanism;
[0029] 2, liquid injection assembly; 21, liquid injection container; 22, liquid level detection member; 23, liquid injection valve; 24, heat exchange member; 25, first one-way valve;
[0030] 3, cooling circulation assembly; 31, first injection and suction mechanism; 32, first valve; 33, second valve; 34, filter member; 35, second one-way valve;
[0031] 4, heat dissipation circulation assembly; 41, second injection and suction mechanism; 42, heat dissipation member;
[0032] 5, exhaust assembly; 51, first exhaust pipe; 52, second exhaust pipe; 53, exhaust valve;
[0033] 6, liquid discharge valve;
[0034] 7, liquid discharge pipe. DETAILED DESCRIPTION
[0035] The utility model will be further described in detail below in combination with the drawings and examples. It can be understood that the specific examples described herein are only used to explain the utility model, and not limited to the utility model. In addition, it should be noted that in order to facilitate the description, only the part related to the utility model is shown in the drawings, not all structures.
[0036] In the description of the utility model, unless otherwise explicitly specified and limited, the terms "connected", "connected", "fixed" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication between two elements or the interaction between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.
[0037] In the utility model, unless another definite provision and limitation, first feature is "on" or "under" second feature can include that first and second features are in direct contact, also can include that first and second features are not in direct contact but contact through other feature between them. Moreover, first feature "on", "above" and "upper surface of" second feature includes that first feature is directly above and obliquely above second feature, or only indicates that horizontal height of first feature is higher than second feature. First feature "under", "below" and "under surface of" second feature includes that first feature is directly below and obliquely below second feature, or only indicates that horizontal height of first feature is less than second feature.
[0038] In the description of the embodiment, the terms "upper", "lower", "left", "right" and other orientation or position relationship are based on the orientation or position relationship shown in the drawings, only for the convenience of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore cannot be understood as a limitation on the utility model. In addition, the terms "first", "second" are only used to distinguish in description, and have no special meaning.
[0039] The embodiment provides a heat exchange device for motor test, as shown in the figure, cooling liquid can be supplemented in time, the motor 100 is sufficiently cooled, the accuracy of motor 100 detection result is guaranteed, and the workload and labor intensity of workers can be reduced. Figure 1
[0040] As shown in the figure, the heat exchange device for motor test comprises a liquid supplementing assembly 1, a liquid injecting assembly 2, a cooling circulating assembly 3, a heat dissipation circulating assembly 4 and a control module. The liquid supplementing assembly 1 comprises a liquid storage container 11 and an injection mechanism 12. The liquid storage container 11 is configured to store cooling liquid, and the inner cavity of the liquid storage container 11 is communicated with the liquid inlet end of the injection mechanism 12 through a pipeline. The liquid injecting assembly 2 comprises a liquid injection container 21, a liquid level detecting piece 22, a liquid injection valve 23 and a heat exchange piece 24, and the liquid injection container 21 is arranged above the heat exchange piece 24. The heat exchange piece 24 is provided with a first cavity and a second cavity, and the liquid outlet end of the injection mechanism 12 is communicated with the inner cavity of the liquid injection container 21. A liquid injection pipeline is arranged between the liquid injection container 21 and the first cavity, and the liquid injection valve 23 is arranged on the liquid injection pipeline. Therefore, the injection mechanism 12 can inject the cooling liquid in the liquid storage container 11 into the liquid injection container 21 to store part of the cooling liquid in the liquid injection container 21 by opening the injection mechanism 12, and then the cooling liquid can enter the first cavity through the liquid injection pipeline and the liquid injection chamber of the liquid injection valve 23 until the first cavity is filled by opening the liquid injection valve 23. Figure 1
[0041] The liquid level detection member 22 is arranged in the liquid injection container 21 and is used to detect the liquid level of the cooling liquid in the liquid injection container 21. The cooling circulation assembly 3 is connected between the liquid outlet of the first chamber and the liquid inlet of the second chamber, and is configured to be in series communication with the cooling cavity of the motor 100, and is used to guide the cooling liquid in the first chamber to flow through the cooling cavity of the motor 100 and return to the second chamber. One end of the heat dissipation circulation assembly 4 is in communication with the liquid outlet of the second chamber, and the other end is in communication with the liquid inlet of the first chamber. The heat dissipation circulation assembly 4 is used to perform heat dissipation treatment on the cooling liquid in the second chamber and recycle into the first chamber. The injection mechanism 12 and the liquid level detection member 22 are both in communication connection with the control module.
[0042] When the motor 100 is tested, the motor 100 needs to be cooled at the same time. First, the motor 100 is communicated with the cooling circulation assembly 3, the control module controls the injection mechanism 12 to open, so that the injection mechanism 12 injects the cooling liquid stored in the liquid storage container 11 into the liquid injection container 21. When the liquid level detection member 22 detects that the liquid level of the cooling liquid in the liquid injection container 21 reaches the upper limit liquid level, a signal is sent to the control module, and the control module closes the injection mechanism 12. Then the liquid injection valve 23 is opened, the cooling liquid will flow into the first chamber through the pipeline, and then under the action of the cooling circulation assembly 3, the cooling liquid will flow into the cooling cavity of the motor 100. After cooling the motor 100, the cooling liquid will flow into the second chamber, and finally under the action of the heat dissipation circulation assembly 4, the cooling liquid in the second chamber is recycled into the first chamber after being cooled, so as to realize the recycling of the cooling liquid. When the cooling liquid flows through the cooling cavity of the motor 100, part of the cooling liquid will be consumed, so that the recycled cooling liquid cannot fill the first chamber. Since the liquid injection container 21 is located above the heat exchange member 24, under the action of gravity, the cooling liquid in the liquid injection container 21 will flow into the first chamber to fill the first chamber. When the liquid level of the cooling liquid in the liquid injection container 21 decreases to the lower limit liquid level, a signal is sent to the control module, and the control module opens the injection mechanism 12. The injection mechanism 12 will supplement the cooling liquid in the liquid injection container 21 until the liquid level of the cooling liquid reaches the upper limit liquid level.
[0043] By arranging the liquid supplement assembly 1, the liquid level detection member 22 and the liquid injection container 21, the liquid injection container 21 can always have sufficient cooling liquid, so that the liquid injection container 21 can supplement the first chamber in time, so that the first chamber is always filled with cooling liquid, and then the cooling liquid fills the cooling cavity of the motor 100, fully cools the motor 100, improves the operation reliability of the motor 100, and ensures the accuracy of the test result of the motor 100. Through the cooperation of the control module and the liquid level detection member 22, the liquid injection container 21 can be automatically supplemented, and the staff does not need to monitor for a long time, which can reduce the workload and labor intensity of the staff.
[0044] Exemplarily, the injecting mechanism 12 comprises a liquid injection pump, the liquid level detecting member 22 comprises a liquid level sensor, and the heat exchanging member 24 comprises a heat exchanging tank.
[0045] Optionally, as shown in Figure 1 the first one-way valve 25 is arranged in the liquid injection pipeline and located between the liquid injection valve 23 and the first chamber. When the motor 100 under test is cooled, the injecting mechanism 12 is first controlled to be opened by the control module, so that the cooling liquid in the liquid storage container 11 is injected into the liquid injection container 21 until the liquid level of the cooling liquid in the liquid injection container 21 reaches the upper limit liquid level. Then, the liquid injection valve 23 and the first one-way valve 25 are opened, and the cooling liquid in the liquid injection container 21 flows into the first chamber through the liquid injection pipeline, the liquid injection valve 23 and the first one-way valve 25. After that, the cooling liquid in the first chamber flows through the cooling cavity of the motor 100 through the cooling circulation assembly 3, so as to realize the cooling of the motor 100. By arranging the first one-way valve 25, the cooling liquid in the liquid injection pipeline can only flow from the liquid injection container 21 to the first chamber, which can prevent the backflow of the cooling liquid in the liquid injection pipeline, thereby avoiding possible mixing and contamination, ensuring the normal operation of the cooling work, and improving the stability of the system.
[0046] Optionally, as shown in Figure 1 the heat exchanging device for motor test further comprises an exhaust assembly 5. The exhaust assembly 5 comprises an exhaust pipeline and an exhaust valve arranged on the exhaust pipeline. The inlet end of the exhaust pipeline is in communication with the liquid injection pipeline between the first one-way valve and the first chamber, and the outlet end of the exhaust pipeline is in communication with the liquid injection container. When the heat exchanging device is not used for a long time or is used for the first time, the cooling liquid entering the first chamber from the liquid injection container 21 usually carries part of the air, so that the cooling liquid cannot fill the first chamber. If the cooling liquid in the first chamber is guided into the cooling cavity of the motor 100 by the cooling circulation system at this time, on the one hand, the cooling liquid cannot fill the cooling cavity of the motor 100, so that the cooling liquid cannot fully contact the cooling cavity of the motor 100 and carry away the heat generated by the motor 100, resulting in a decrease in the cooling effect of the motor 100. On the other hand, the presence of air can reduce the flow efficiency of the cooling liquid, resulting in poor cooling effect.
[0047] By arranging the exhaust assembly 5, when the cooling liquid is injected into the first chamber, the exhaust valve 53 can be opened, so that the air in the cooling liquid is discharged through the exhaust pipeline, which can ensure that the first chamber is filled with cooling liquid, so that the cooling liquid fills the inner cavity of the motor 100, and the cooling efficiency is improved. In addition, the exhaust pipeline is in communication with the liquid injection container 21, and if part of the cooling liquid is carried by the discharged air, the cooling liquid can flow back into the liquid injection container 21, preventing resource waste.
[0048] In the embodiment, the exhaust pipeline comprises a first exhaust pipeline 51 and a second exhaust pipeline 52. One end of the first exhaust pipeline 51 is in communication with the liquid injection pipeline between the first one-way valve 25 and the first chamber, and the other end is in communication with the second exhaust pipeline 52 through an exhaust valve 53, and one end of the second exhaust pipeline 52 away from the exhaust valve 53 is in communication with the liquid injection container 21.
[0049] Optionally, as shown in Figure 1 The cooling circulation assembly 3 comprises a first liquid injection mechanism 31, a first valve 32 and a second valve 33. The first chamber, the liquid injection cavity of the first liquid injection mechanism 31 and the liquid inlet end of the first valve 32 are sequentially in communication through pipelines, that is, the first chamber and the liquid injection cavity of the first liquid injection mechanism 31, and the liquid injection cavity of the first liquid injection mechanism 31 and the liquid inlet end of the first valve 32 are connected by pipelines. The liquid outlet end of the first valve 32 is configured to be in communication with the cooling cavity of the motor 100 through a pipeline, and the cooling cavity is in communication with the liquid inlet end of the second valve 33 through a pipeline, and the liquid outlet end of the second valve 33 is in communication with the second chamber through a pipeline.
[0050] When the motor 100 needs to be cooled, the first valve 32 and the second valve 33 are opened, and under the action of the first liquid injection mechanism 31, the cooling liquid in the first chamber flows into the inner cavity of the motor 100 through the pipeline, the liquid injection cavity of the first liquid injection mechanism 31 and the inner cavity of the first valve 32, and the cooling liquid fully contacts the motor 100 in the inner cavity of the motor 100, and then flows out of the inner cavity of the motor 100, enters the second chamber of the heat exchange member 24 after passing through the pipeline and the second valve 33, and the cooling liquid in the second chamber is heat dissipated by the heat dissipation circulation assembly 4 and then flows back into the first chamber, realizing the reuse of the cooling liquid.
[0051] Exemplarily, the first liquid injection mechanism 31 comprises a circulating pump.
[0052] Optionally, as shown in Figure 1 The cooling circulation assembly 3 further comprises a filter 34 connected to the pipeline between the motor 100 and the second valve 33. Therefore, the motor 100 and the filter 34, and the filter 34 and the second valve 33 are in communication through the pipeline. After the cooling liquid fully contacts the motor 100 in the inner cavity of the motor 100 to cool the motor 100, the used cooling liquid flows out of the inner cavity of the motor 100, then flows into the filter 34 through the pipeline, and flows back to the second chamber through the second valve 33. When the cooling liquid cools the motor 100 and flows out of the inner cavity of the motor 100, it carries metal scraps, oil and other impurities inside the motor 100. By arranging the filter 34, the used cooling liquid can be filtered to remove impurities, so that the cooling liquid remains clean, the recycled cooling liquid has good cooling effect, and the service life of the heat exchange device is prolonged.
[0053] Optionally, as shown in Figure 1As shown, the cooling circulation assembly 3 further comprises a second one-way valve 35 connected to the pipeline between the second valve 33 and the second chamber. After the cooling liquid cools the motor 100 and flows out of the inner chamber of the motor 100, it will pass through the pipeline and the second valve 33 into the inner chamber of the second one-way valve 35. Under the action of the second one-way valve 35, the cooling liquid entering the inner chamber of the second one-way valve 35 can only flow into the second chamber. By arranging the second one-way valve 35, it can be prevented that the cooling liquid after use flows back in the pipeline and reenters the inner chamber of the motor 100, thereby avoiding causing the temperature of the motor 100 to rise, ensuring the normal operation of the cooling work, and improving the stability of the system.
[0054] As shown in Figure 1 The heat exchange device for motor testing further comprises a liquid discharge pipe 7 and a liquid discharge valve 6 arranged on the liquid discharge pipe 7. The bottom wall of the liquid injection container 21 is provided with a discharge port, and one end of the liquid discharge pipe 7 communicates with the discharge port. After the use of the heat exchange device is completed, the liquid discharge valve 6 can be opened to discharge the cooling liquid in the liquid injection container 21, and then the liquid discharge valve 6 is closed, clean water is added to the liquid injection container 21 for cleaning, after the cleaning is completed, the liquid discharge valve 6 is opened again, and the sewage after cleaning is discharged through the discharge port, the liquid discharge pipe 7 and the liquid discharge valve 6.
[0055] Optionally, the heat exchange device for motor testing further comprises an overflow pipe. One end of the overflow pipe communicates with the first chamber, and the other end communicates with the liquid discharge end of the first suction mechanism 31. When the motor 100 is cooled, the cooling liquid in the first chamber will be injected into the cooling chamber of the motor 100 under the action of the first suction mechanism 31. In actual work, the flow rate of the cooling liquid needs to be adjusted according to different working conditions of the tested motor 100, and the rotating speed of the first suction mechanism 31 is constant, and the output flow rate of the cooling liquid is constant. When the required flow rate of the tested motor 100 is less than the output flow rate of the first suction mechanism 31, the first suction mechanism 31 may be burned. In order to avoid the above situation, the first suction mechanism 31 needs to be connected with an overflow pipe between the liquid discharge end of the first suction mechanism 31 and the first chamber. By arranging the overflow pipe, the excess cooling liquid output by the first suction mechanism 31 can be drained into the first chamber, thereby protecting the motor 100 and the first suction mechanism 31.
[0056] Optionally, as shown in Figure 1As shown, the heat dissipation circulating assembly 4 comprises a second pumping mechanism 41 and a heat dissipation member 42. The second cavity, the pumping cavity of the second pumping mechanism 41 and the liquid inlet end of the heat dissipation member 42 are sequentially communicated through pipes, so that the second cavity and the second pumping mechanism 41 and the second pumping mechanism 41 and the heat dissipation member 42 are communicated through pipes. The liquid outlet end of the heat dissipation member 42 is communicated with the first cavity through a pipe. When the used cooling liquid enters the second cavity, the cooling liquid in the second cavity will enter the heat dissipation member 42 through the pipe under the action of the second pumping mechanism 41, and is cooled in the heat dissipation member 42, and then flows out of the heat dissipation member 42 and flows back to the first cavity through the pipe, so as to realize the recycling of the cooling liquid.
[0057] Exemplarily, the second pumping mechanism 41 comprises a heat dissipation pump.
[0058] Exemplarily, the heat dissipation member 42 comprises a coil heat dissipation device or a plate heat dissipation device.
[0059] Obviously, the above embodiments of the utility model are only examples for clearly explaining the utility model, and are not the limitation of the embodiments of the utility model. For ordinary skilled in the art, various obvious changes, re-adjustment and replacement can be made without departing from the protection scope of the utility model. Here, all the embodiments need not and cannot be exhausted. Any modification, equivalent replacement and improvement within the spirit and principle of the utility model should be included in the protection scope of the utility model claim.
Claims
1. A heat exchange device for motor testing, characterized by, The motor test heat exchange device comprises a liquid supplement assembly (1), a liquid injection assembly (2), a cooling circulation assembly (3), a heat dissipation circulation assembly (4) and a control module. The liquid supplement assembly (1) comprises a liquid storage container (11) and an injection mechanism (12), the liquid storage container (11) is configured to store cooling liquid, and an inner cavity of the liquid storage container (11) is communicated with an inlet end of the injection mechanism (12) through a pipeline. The liquid injection assembly (2) comprises a liquid injection container (21), a liquid level detection member (22), a liquid injection valve (23) and a heat exchange member (24), the liquid injection container (21) is arranged above the heat exchange member (24), the heat exchange member (24) is provided with a first chamber and a second chamber, an outlet end of the injection mechanism (12) is communicated with an inner cavity of the liquid injection container (21), a liquid injection pipeline is arranged between the liquid injection container (21) and the first chamber, the liquid injection valve (23) is arranged on the liquid injection pipeline, and the liquid level detection member (22) is arranged in the liquid injection container (21) and used for detecting the liquid level of the cooling liquid in the liquid injection container (21). The cooling circulation assembly (3) is connected between an outlet of the first chamber and an inlet of the second chamber, and is configured to be communicated with a cooling cavity of the motor (100) in series. The heat dissipation circulation assembly (4) is communicated with an outlet of the second chamber at one end and with an inlet of the first chamber at the other end. The control module is in communication connection with the injection mechanism (12) and the liquid level detection member (22).
2. The heat exchange device for testing electric machines according to claim 1, characterized in that, The liquid injection assembly (2) further comprises a first one-way valve (25), which is arranged on the liquid injection pipeline and located between the liquid injection valve (23) and the first chamber.
3. The heat exchange device for testing electric machines according to claim 2, characterized in that, The motor test heat exchange device further comprises an exhaust assembly (5), which comprises an exhaust pipeline and an exhaust valve (53) arranged on the exhaust pipeline, an inlet end of the exhaust pipeline is communicated with the liquid injection pipeline between the first one-way valve (25) and the first chamber, and an outlet end of the exhaust pipeline is communicated with the liquid injection container (21).
4. The heat exchange device for testing electric machines according to any of claims 1-3, characterized in that, The cooling circulation assembly (3) comprises a first injection and suction mechanism (31), a first valve (32) and a second valve (33), the first chamber, an injection and suction cavity of the first injection and suction mechanism (31) and an inlet end of the first valve (32) are communicated in sequence through pipelines, an outlet end of the first valve (32) is configured to be communicated with the cooling cavity through a pipeline, the cooling cavity is communicated with an inlet end of the second valve (33) through a pipeline, and an outlet end of the second valve (33) is communicated with the second chamber through a pipeline.
5. The heat exchange device for testing electric machines according to claim 4, characterized in that, The cooling circulation assembly (3) further comprises a filter member (34), which is connected to the pipeline between the motor (100) and the second valve (33).
6. The heat exchange device for testing electric machines according to claim 4, characterized in that, The cooling circulation assembly (3) further comprises a second one-way valve (35), which is connected to the pipeline between the second valve (33) and the second chamber.
7. The heat exchange device for testing electric machines according to claim 4, characterized in that, The heat exchange device for motor testing further comprises an overflow pipe, one end of the overflow pipe being in communication with the first chamber and the other end being in communication with a liquid discharge end of the first injection and suction mechanism (31).
8. The heat exchange device for testing electric machines according to any of claims 1-3, characterized in that, The heat exchange device for motor testing further comprises a liquid discharge pipe (7) and a liquid discharge valve (6) arranged on the liquid discharge pipe (7), a bottom wall of the liquid injection container (21) being provided with a discharge port, one end of the liquid discharge pipe (7) being in communication with the discharge port.
9. The heat exchange device for testing electric machines according to any of claims 1-3, characterized in that, The heat dissipation circulating assembly (4) comprises a second injection and suction mechanism (41) and a heat dissipation member (42), the second chamber, an injection and suction chamber of the second injection and suction mechanism (41) and a liquid inlet end of the heat dissipation member (42) being sequentially in communication through pipes, and a liquid outlet end of the heat dissipation member (42) being in communication with the first chamber through a pipe.
10. The heat exchange device for testing electric machines according to any of claims 1-3, characterized in that, The liquid level detection member (22) comprises a liquid level sensor.