Cooling system for motor test and temperature control method and device

Abstract

The invention relates to a cooling system for a motor test and a temperature control method and device. The system comprises a first heat exchanger, a second heat exchanger, a third heat exchanger, a water tank and an oil tank. Wherein a primary side pipeline of the first heat exchanger is connected with a freezing water pipeline; a secondary side pipeline of the first heat exchanger is connected with two branch pipelines, and the second heat exchanger is used for refrigerating a water medium in the water tank when working; the other end of the second branch pipeline is connected with a primary side pipeline of the third heat exchanger; a secondary side pipeline of the third heat exchanger communicates with the oil tank, and the third heat exchanger is used for refrigerating an oil medium in the oil tank during working; the water tank is used for providing a water medium for the tested motor; the oil tank is used for providing an oil medium for the tested motor. The motor test cooling system can cool a water-cooled motor and can also cool an oil-cooled motor, and the problem that the cooling system for the motor test only has a single cooling mode is effectively solved.

Description

Technical Field

[0001] The present application relates to the technical field of motor testing, and in particular to a cooling system, a temperature control method and a device for motor testing. Background Art

[0002] In the field of electric drive testing, the electric drive system of new energy vehicles needs to undergo a large number of performance, reliability and function development tests during the vehicle development process. The motor will generate a lot of heat when working, so during the test phase and on the whole vehicle, the motor needs a cooling system to dissipate heat. Depending on the design of the motor model and type, the motor cooling method is divided into oil-cooled motor and water-cooled motor.

[0003] However, the current laboratory cooling system can only perform a single cooling method, so it is necessary to install two cooling systems, and choose different cooling systems according to needs. Installing two cooling systems will increase the test cost. Summary of the invention

[0004] Based on this, it is necessary to provide a cooling system, temperature control method and device for motor testing that can provide both oil cooling and water cooling in order to address the above technical problems.

[0005] In a first aspect, the present application provides a cooling system for motor testing. The cooling system includes a first heat exchanger, a second heat exchanger, a third heat exchanger, a water tank, and an oil tank;

[0006] The primary side pipeline of the first heat exchanger is connected to the chilled water pipeline; the secondary side pipeline of the first heat exchanger is connected to two branch pipelines, namely the first branch pipeline and the second branch pipeline, the other end of the first branch pipeline is connected to the primary side pipeline of the second heat exchanger, the secondary side pipeline of the second heat exchanger is connected to the water tank, and the second heat exchanger is used to cool the water medium in the water tank when it is working; the other end of the second branch pipeline is connected to the primary side pipeline of the third heat exchanger; the secondary side pipeline of the third heat exchanger is connected to the oil tank, and the third heat exchanger is used to cool the oil medium in the oil tank when it is working;

[0007] The water tank is used to provide water medium for the motor under test; the oil tank is used to provide oil medium for the motor under test.

[0008] In one embodiment, the second heat exchanger is disposed in the water tank; the third heat exchanger is disposed in the oil tank;

[0009] The first branch pipeline and the second branch pipeline are provided with solenoid valves.

[0010] In one of the embodiments, one end of the secondary side pipeline of the second heat exchanger is connected to the water inlet pipeline, and the other end is connected to the water outlet pipeline; the water inlet of the water inlet pipeline is arranged near the bottom of the water tank; a water pump is arranged on the water inlet pipeline for extracting the water medium in the water tank; the water outlet pipeline is used to discharge the water medium after being cooled by the second heat exchanger.

[0011] In one of the embodiments, one end of the secondary pipeline of the third heat exchanger is connected to the oil inlet pipeline, and the other end is connected to the oil outlet pipeline; the oil inlet of the oil inlet pipeline is arranged near the bottom of the oil tank; a first oil pump is arranged on the oil inlet pipeline for extracting the oil medium in the oil tank; the oil outlet pipeline is used to discharge the oil medium after being cooled by the third heat exchanger.

[0012] In one embodiment, heating devices are provided in both the water tank and the oil tank.

[0013] In one embodiment, a first test cavity is provided corresponding to the water tank, wherein the first test cavity is used to test the motor under test that is cooled or heated by water medium;

[0014] The first test cavity is connected to the water tank through a first connecting pipeline; the first connecting pipeline is provided with an air blowing device, which is connected to the water inlet pipe in the first connecting pipeline through the air blowing pipeline; the air blowing pipeline is provided with an electromagnetic valve;

[0015] The first connecting pipeline is provided with at least one of a temperature collecting unit, a pressure collecting unit and a flow collecting unit.

[0016] In one embodiment, a second test cavity is provided corresponding to the oil tank, wherein the second test cavity is used to test the motor under test that is heated or cooled by oil medium;

[0017] The second test cavity is connected to the oil tank through a second connecting pipeline; the second connecting pipeline is provided with an air blowing device, which is connected to the oil inlet pipe in the second connecting pipeline through the air blowing pipeline; the air blowing pipeline is provided with an electromagnetic valve;

[0018] The second connecting pipeline is provided with at least one of a temperature collection unit, a pressure collection unit and a flow collection unit.

[0019] In one embodiment, the bottom of the second test cavity has an oil return pipe, the other end of which is connected to a collection box; the collection box is also connected to the oil tank through an upper oil pipe; and a second oil pump is provided on the upper oil pipe.

[0020] In a second aspect, the present application provides a temperature control method, which is applied to the cooling system for motor testing in the first aspect, and the method comprises:

[0021] According to the cooling type of the motor under test, a target heat exchanger is selected from the second heat exchanger and the third heat exchanger;

[0022] According to the preset temperature and the current temperature, the operation of the first heat exchanger and the target heat exchanger is controlled.

[0023] In a third aspect, the present application also provides a temperature control device. The device comprises:

[0024] A selection module, used for selecting a target heat exchanger from the second heat exchanger and the third heat exchanger according to a cooling type of the motor under test;

[0025] The control module is used to control the operation of the first heat exchanger and the target heat exchanger according to the preset temperature and the current temperature.

[0026] In a fourth aspect, the present application further provides a computer device. The computer device includes a memory and a processor, the memory stores a computer program, and the processor implements the following steps when executing the computer program:

[0027] According to the cooling type of the motor under test, a target heat exchanger is selected from the second heat exchanger and the third heat exchanger;

[0028] According to the preset temperature and the current temperature, the operation of the first heat exchanger and the target heat exchanger is controlled.

[0029] In a fifth aspect, the present application further provides a computer-readable storage medium. The computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the following steps are implemented:

[0030] According to the cooling type of the motor under test, a target heat exchanger is selected from the second heat exchanger and the third heat exchanger;

[0031] According to the preset temperature and the current temperature, the operation of the first heat exchanger and the target heat exchanger is controlled.

[0032] In a sixth aspect, the present application further provides a computer program product. The computer program product includes a computer program, and when the computer program is executed by a processor, the following steps are implemented:

[0033] According to the cooling type of the motor under test, a target heat exchanger is selected from the second heat exchanger and the third heat exchanger;

[0034] According to the preset temperature and the current temperature, the operation of the first heat exchanger and the target heat exchanger is controlled.

[0035] The cooling system for the motor test includes a first heat exchanger, a second heat exchanger, a third heat exchanger, a water tank and an oil tank. The primary pipeline of the first heat exchanger is connected to the chilled water pipeline; the secondary pipeline of the first heat exchanger is connected to two branch pipelines, namely the first branch pipeline and the second branch pipeline, the other end of the first branch pipeline is connected to the primary pipeline of the second heat exchanger, the secondary pipeline of the second heat exchanger is connected to the water tank, and the second heat exchanger is used to cool the water medium in the water tank when it is working; the other end of the second branch pipeline is connected to the primary pipeline of the third heat exchanger; the secondary pipeline of the third heat exchanger is connected to the oil tank, and the third heat exchanger is used to cool the oil medium in the oil tank when it is working; the water tank is used to provide water medium for the motor under test; the oil tank is used to provide oil medium for the motor under test. The motor test cooling system of the present application includes both a water cooling method and an oil cooling method. That is to say, the motor test cooling system of the present application can cool both water-cooled motors and oil-cooled motors, which effectively solves the problem that the cooling system for motor testing has only a single cooling method. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] FIG1 is a schematic structural diagram of a first motor test cooling system provided in this embodiment;

[0037] FIG2 is a schematic structural diagram of a second motor test cooling system provided in this embodiment;

[0038] Figure 3 A schematic diagram of the structure of a third motor test cooling system provided in this embodiment;

[0039] Figure 4 A schematic flow chart of a temperature control method provided in this embodiment;

[0040] Figure 5 A structural block diagram of a temperature control device provided in this embodiment;

[0041] FIG. 6 is a diagram showing the internal structure of a computer device in one embodiment.

[0042] Description of reference numerals:

[0043] 1. First heat exchanger; 2. Third heat exchanger; 21. Oil inlet pipeline; 22. Oil outlet pipeline; 3. Third heat exchanger; 31. Water inlet pipeline; 32. Water outlet pipeline; 4. First branch pipeline; 5. Second branch pipeline; 6. Air blowing device; 7. Heating device; 8. Collection box; 9. Second test cavity; 10. First test cavity. DETAILED DESCRIPTION

[0044] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0045] In one embodiment, as shown in FIG1 , a cooling system for motor testing is provided. The cooling system includes a first heat exchanger 1, a second heat exchanger, a third heat exchanger 32, a water tank and an oil tank; the primary pipeline of the first heat exchanger 1 is connected to a chilled water pipeline; the secondary pipeline of the first heat exchanger 1 is connected to two branch pipelines, namely a first branch pipeline 4 and a second branch pipeline 5, the other end of the first branch pipeline 4 is connected to the primary pipeline of the second heat exchanger, the secondary pipeline of the second heat exchanger is connected to the water tank, and the second heat exchanger is used to cool the water medium in the water tank when it is working; the other end of the second branch pipeline 5 is connected to the primary pipeline of the third heat exchanger 32; the secondary pipeline of the third heat exchanger 32 is connected to the oil tank, and the third heat exchanger 32 is used to cool the oil medium in the oil tank when it is working; the water tank is used to provide water medium for the motor under test; the oil tank is used to provide oil medium for the motor under test.

[0046] Among them, the first heat exchanger 1, the second heat exchanger and the third heat exchanger 32 can all adopt existing heat exchangers, and the types of heat exchangers include but are not limited to shell and tube heat exchangers, plate heat exchangers, sleeve heat exchangers, fin heat exchangers, etc. A water tank refers to a box structure in which a water medium is stored. An oil tank refers to a box structure in which an oil medium is stored. A motor under test refers to a motor used for testing. The motor test cooling system of the present application is used to provide a cooling function for the motor under test during the test of the motor under test.

[0047] In the present application, the primary pipeline of the first heat exchanger 1 refers to the pipeline that provides a cooling source for the heat exchanger, and is used to circulate chilled water inside. The primary pipeline of the first heat exchanger 1 is used to cool the secondary pipeline of the first heat exchanger 1. The secondary pipeline of the first heat exchanger 1 is connected to two branch pipelines, namely the first branch pipeline 4 and the second branch pipeline 5. The other end of the first branch pipeline 4 is connected to the primary pipeline of the second heat exchanger. Since the secondary pipeline of the first heat exchanger 1 is connected to the primary pipeline of the second heat exchanger through the first branch pipeline 4, the cooling medium in the secondary pipeline of the first heat exchanger 1 can flow into the primary pipeline of the second heat exchanger. Since the secondary pipeline of the second heat exchanger is connected to the water tank, the secondary pipeline of the second heat exchanger can be cooled down by the primary pipeline of the second heat exchanger under the action of heat conduction, thereby achieving the purpose of cooling down the water medium in the water tank. Since the secondary pipeline of the first heat exchanger 1 is connected with the primary pipeline of the third heat exchanger 32 through the second branch pipeline 5, the cooling medium in the secondary pipeline of the first heat exchanger 1 can flow into the primary pipeline of the third heat exchanger 32. Since the secondary pipeline of the third heat exchanger 32 is connected to the oil tank, the secondary pipeline can be cooled by heat conduction through the primary pipeline of the third heat exchanger 32, thereby achieving the purpose of cooling the oil medium in the oil tank.

[0048] It should be noted that the cooling medium flowing through the secondary pipeline of the first heat exchanger 1, the first branch pipeline 4, the second branch pipeline 5, the primary pipeline of the second heat exchanger, and the primary pipeline of the third heat exchanger 32 is but not limited to water, oil or other liquid media.

[0049] The cooling system for the motor test includes a first heat exchanger 1, a second heat exchanger, a third heat exchanger 32, a water tank and an oil tank. The primary pipeline of the first heat exchanger 1 is connected to the chilled water pipeline; the secondary pipeline of the first heat exchanger 1 is connected to two branch pipelines, namely the first branch pipeline 4 and the second branch pipeline 5. The other end of the first branch pipeline 4 is connected to the primary pipeline of the second heat exchanger, and the secondary pipeline of the second heat exchanger is connected to the water tank. When the second heat exchanger is working, it is used to cool the water medium in the water tank; the other end of the second branch pipeline 5 is connected to the primary pipeline of the third heat exchanger 32; the secondary pipeline of the third heat exchanger 32 is connected to the oil tank. When the third heat exchanger 32 is working, it is used to cool the oil medium in the oil tank; the water tank is used to provide water medium for the motor under test; the oil tank is used to provide oil medium for the motor under test. The motor test cooling system of the present application includes both a water cooling method and an oil cooling method. That is to say, the motor test cooling system of the present application can cool both water-cooled motors and oil-cooled motors, which effectively solves the problem that the cooling system for motor testing has only a single cooling method.

[0050] In one embodiment, as shown in Fig. 1 and Fig. 2, the second heat exchanger is disposed in the water tank; the third heat exchanger 32 is disposed in the oil tank. The first branch pipeline 4 and the second branch pipeline 5 are provided with electromagnetic valves.

[0051] Optionally, in this embodiment, the second heat exchanger can be fixed in the water tank by a bracket. The third heat exchanger 32 can also be fixed in the oil tank by a bracket. The first branch pipeline 4 and the second branch pipeline 5 are both provided with solenoid valves. The on-off of the corresponding branch pipeline can be controlled by the solenoid valve. For example, when the motor under test is a water-cooled motor, when testing the motor under test, it is necessary to open the solenoid valve on the first branch pipeline 4 and close the solenoid valve on the second branch pipeline 5, and only cool the water medium in the water tank to prevent the waste of cooling resources. When the water temperature in the water tank is too low (which can be measured by the temperature acquisition unit on the first connecting pipeline), the solenoid valve on the second branch pipeline 5 can be opened at this time so that the cooling medium can flow to the second branch pipeline 5 to share the cooling resources, which can play a role in regulating the water temperature in the water tank.

[0052] In one embodiment, as shown in FIG2 , Figure 3 As shown, one end of the secondary side pipeline of the second heat exchanger is connected to the water inlet pipeline 31, and the other end is connected to the water outlet pipeline 32; the water inlet of the water inlet pipeline 31 is arranged near the bottom of the water tank; a water pump is arranged on the water inlet pipeline 31 for extracting the water medium in the water tank; the water outlet pipeline 32 is used to discharge the water medium after being cooled by the second heat exchanger.

[0053] In this embodiment, when the water medium in the water tank needs to be cooled, the water medium is extracted by controlling the water pump and transported to the secondary pipeline of the second heat exchanger, and then flows out from the outlet pipeline 32 at the other end of the secondary pipeline.

[0054] Optionally, in the present application, the speed of regulating the water temperature in the water tank can be controlled by controlling the operating speed of the water pump. For example, at the beginning of the cooling stage, the water temperature in the water tank can be quickly reduced by controlling the water pump to operate at a high speed. When the water temperature approaches the preset temperature, the operating speed of the water pump can be reduced to reduce the regulating speed of the water temperature and avoid it being lower than the preset temperature.

[0055] One end of the secondary pipeline of the third heat exchanger 32 is connected to the oil inlet pipeline 21, and the other end is connected to the oil outlet pipeline 22; the oil inlet of the oil inlet pipeline 21 is arranged near the bottom of the oil tank; the oil inlet pipeline 21 is provided with a first oil pump for extracting the oil medium in the oil tank; the oil outlet pipeline 22 is used to discharge the oil medium after being cooled by the third heat exchanger 32.

[0056] In this embodiment, when the oil medium in the oil tank needs to be cooled, the oil medium is extracted by controlling the oil pump and transported to the secondary pipeline of the third heat exchanger 32, and then flows out from the oil outlet pipeline 22 at the other end of the secondary pipeline.

[0057] Optionally, in the present application, the oil temperature regulation speed in the oil tank can be controlled by controlling the operating speed of the oil pump. For example, at the beginning of the cooling stage, the oil temperature in the oil tank can be quickly reduced by controlling the oil pump to operate at a high speed. When the oil temperature approaches the preset temperature, the operating speed of the oil pump can be reduced to reduce the oil temperature regulation speed and avoid it being lower than the preset temperature.

[0058] Optional, as shown in Figure 2, Figure 3 As shown, a heating device 7 is provided in both the water tank and the oil tank. During the motor test, the temperature may not be lowered throughout the whole process. Sometimes, when the motor temperature is lower than the lower temperature limit, the motor under test needs to be heated. A heating device 7 is also provided at the bottom of the water tank and the oil tank to heat the water medium or the oil medium. It should be noted that the heating device 7 can adopt the existing resistance wire heating device 7 or other forms of heating devices 7. The specific model and structure can be realized by using the existing technology and will not be described in detail here.

[0059] In one embodiment, as shown in FIG2 , Figure 3 As shown, a first test cavity 10 is correspondingly provided in the water tank, wherein the first test cavity 10 is used to test the motor under test which is cooled or heated by water medium.

[0060] The first test cavity 10 may be a housing of the motor under test, or may be a separately arranged cavity structure.

[0061] The first test cavity 10 is connected to the water tank via a first connecting pipeline; the first connecting pipeline is provided with a blowing device 6, which is connected to the water inlet pipe in the first connecting pipeline via the blowing pipeline; the blowing pipeline is provided with a solenoid valve.

[0062] The blowing device 6 can be an air compression tank. Its function is to blow the water medium in the first test cavity 10 and the connecting pipe back into the water tank after the test is completed. Specifically, as shown in FIG2, Figure 3 As shown, the solenoid valve on the water inlet pipe is closed, the solenoid valve on the air blowing pipe is controlled to open, and the air blowing device 6 is controlled to operate, and the water medium will be blown back into the water tank. It should be noted that FIG. 2, Figure 3 The flow direction of the water medium is shown in FIG2 , and the specific principle will not be described in detail here. Figure 3 The rectangular frames arranged on each pipeline are all solenoid valves.

[0063] The first connecting pipeline is provided with at least one of a temperature collecting unit, a pressure collecting unit and a flow collecting unit.

[0064] In one embodiment, as shown in FIG2 , Figure 3As shown, the oil tank is provided with a second test cavity 9 correspondingly, wherein the second test cavity 9 is used to test the motor under test which is heated or cooled by oil medium.

[0065] The second test cavity 9 may be the housing of the motor to be tested, or may be a separately arranged cavity structure.

[0066] The second test cavity 9 is connected to the oil tank through a second connecting pipeline; the second connecting pipeline is provided with a blowing device 6, and the blowing device 6 is connected to the oil inlet pipe in the second connecting pipeline through the blowing pipeline; the blowing pipeline is provided with a solenoid valve.

[0067] The blowing device 6 can be an air compression tank. Its function is to blow the oil medium in the second test cavity 9 and the connecting pipeline back into the water tank after the test is completed. Specifically, as shown in FIG2, Figure 3 As shown, closing the solenoid valve on the oil inlet pipe and controlling the air blowing device 6 to operate will blow the oil medium back into the oil tank. Figure 3 The flow direction of the water medium is shown in FIG. 1 , and the specific principle will not be described in detail here.

[0068] The second connecting pipeline is provided with at least one of a temperature collection unit, a pressure collection unit and a flow collection unit.

[0069] In one embodiment, the second test cavity 9 has an oil return pipe at the bottom, and the other end of the oil return pipe is connected to the collection box 8; the collection box 8 is also connected to the oil tank through the upper oil pipe; the upper oil pipe has a second oil pump. Since the test motor needs to be installed with a reducer or inverter, the second test cavity 9 is not closed, and the oil medium will flow into the oil return pipe under the action of gravity, and then flow into the collection box 8, avoiding the waste of oil medium. The oil medium returning to the collection box 8 can be transported to the oil tank through the second oil pump.

[0070] The temperature acquisition unit of the present application may adopt but is not limited to a temperature sensor. The pressure acquisition unit may adopt but is not limited to a pressure sensor, and the flow acquisition unit may adopt but is not limited to a flow sensor.

[0071] In one embodiment, the motor test cooling system of the present application further includes a control unit, and the first heat exchanger 1, the second heat exchanger, the third heat exchanger 32, the solenoid valve, the oil pump, the water pump, the blowing device 6 and the heating device 7 in the above embodiment are all connected to the control unit and controlled by the control unit. The temperature acquisition unit, the pressure acquisition unit and the flow acquisition unit in the above embodiment are all connected to the control unit to feed back corresponding acquisition signals to the control unit.

[0072] In one embodiment, the present application further provides a temperature control method, which is applied to a control unit of a cooling system for a motor test in any of the above embodiments, such as Figure 4 As shown, the method includes:

[0073] S401, selecting a target heat exchanger from the second heat exchanger and the third heat exchanger according to the cooling type of the motor under test.

[0074] The cooling type refers to the cooling method of the motor under test, such as water cooling or oil cooling. The target heat exchanger refers to a heat exchanger determined based on the cooling type and used to cool the motor under test of the type.

[0075] As an optional implementation of the embodiment of the present application, if the cooling type of the motor under test is a water-cooled motor, the second heat exchanger is used as the target heat exchanger.

[0076] As another optional implementation of the embodiment of the present application, if the cooling type of the motor under test is an oil-cooled motor, the third heat exchanger is used as the target heat exchanger.

[0077] S402, controlling the operation of the first heat exchanger and the target heat exchanger according to the preset temperature and the current temperature.

[0078] The preset temperature refers to the preset target temperature of the water medium or oil medium that needs to be provided to the motor under test. The current temperature refers to the current temperature of the water medium or oil medium in the connecting pipeline (the first connecting pipeline or the second connecting pipeline), which can be acquired by the temperature acquisition unit.

[0079] Optionally, in this embodiment, the temperature difference is determined according to the preset temperature and the current temperature. If the temperature difference is greater than the first preset threshold, the first heat exchanger and the target heat exchanger are controlled to operate, and the water pump or oil pump corresponding to the target heat exchanger is controlled to operate at full speed. If the temperature difference is less than the first preset threshold, the operating speed of the water pump or oil pump corresponding to the target heat exchanger is determined according to the temperature difference. The first heat exchanger and the target heat exchanger are controlled to operate, and the water pump or oil pump corresponding to the target heat exchanger is controlled to operate at the operating speed.

[0080] Optionally, the temperature control method of the present application may be applied to a control unit in the cooling system for motor testing in the above-mentioned embodiment.

[0081] In this embodiment, according to the cooling type of the motor under test, the target heat exchanger is selected from the second heat exchanger and the third heat exchanger. According to the preset temperature and the current temperature, the operation of the first heat exchanger and the target heat exchanger is controlled to ensure the efficient, energy-saving and intelligent operation of the cooling system for the motor test.

[0082] It should be understood that, although the various steps in the flowcharts involved in the above-mentioned embodiments are displayed in sequence according to the indication of the arrows, these steps are not necessarily executed in sequence according to the order indicated by the arrows. Unless there is a clear explanation in this article, the execution of these steps does not have a strict order restriction, and these steps can be executed in other orders. Moreover, at least a part of the steps in the flowcharts involved in the above-mentioned embodiments can include multiple steps or multiple stages, and these steps or stages are not necessarily executed at the same time, but can be executed at different times, and the execution order of these steps or stages is not necessarily to be carried out in sequence, but can be executed in turn or alternately with other steps or at least a part of the steps or stages in other steps.

[0083] Based on the same inventive concept, the embodiment of the present application also provides a temperature control device for implementing the above-mentioned motor test cooling system and method. The implementation scheme for solving the problem provided by the device is similar to the implementation scheme recorded in the above-mentioned method, so the specific limitations in one or more temperature control device embodiments provided below can refer to the above-mentioned limitations on the motor test cooling system and method, and will not be repeated here.

[0084] In one embodiment, if Figure 5 As shown, a temperature control device 1 is provided, comprising: a selection module 10 and a control module 20, wherein:

[0085] A selection module 10, configured to select a target heat exchanger from the second heat exchanger and the third heat exchanger according to a cooling type of the motor under test;

[0086] The control module 20 is used to control the operation of the first heat exchanger and the target heat exchanger according to the preset temperature and the current temperature.

[0087] Each module in the above-mentioned temperature control device can be implemented in whole or in part by software, hardware and a combination thereof. Each of the above-mentioned modules can be embedded in or independent of a processor in a computer device in the form of hardware, or can be stored in a memory in a computer device in the form of software, so that the processor can call and execute the operations corresponding to each of the above modules.

[0088] In one embodiment, a computer device is provided, which may be a server, and its internal structure diagram may be shown in FIG6. The computer device includes a processor, a memory, an input / output interface (Input / Output, referred to as I / O) and a communication interface. Among them, the processor, the memory and the input / output interface are connected through a system bus, and the communication interface is connected to the system bus through the input / output interface. Among them, the processor of the computer device is used to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system, a computer program and a database. The internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The database of the computer device is used to store temperature information data. The input / output interface of the computer device is used to exchange information between the processor and an external device. The communication interface of the computer device is used to communicate with an external terminal through a network connection. When the computer program is executed by the processor, a cooling system and method for motor testing is implemented.

[0089] Those skilled in the art will understand that the structure shown in FIG. 6 is merely a block diagram of a partial structure related to the solution of the present application, and does not constitute a limitation on the computer device to which the solution of the present application is applied. The specific computer device may include more or fewer components than shown in the figure, or combine certain components, or have a different arrangement of components.

[0090] In one embodiment, a computer device is provided, including a memory and a processor, wherein a computer program is stored in the memory, and when the processor executes the computer program, the following steps are implemented:

[0091] According to the cooling type of the motor under test, a target heat exchanger is selected from the second heat exchanger and the third heat exchanger;

[0092] According to the preset temperature and the current temperature, the operation of the first heat exchanger and the target heat exchanger is controlled.

[0093] In one embodiment, a computer-readable storage medium is provided, on which a computer program is stored, and when the computer program is executed by a processor, the following steps are implemented:

[0094] According to the cooling type of the motor under test, a target heat exchanger is selected from the second heat exchanger and the third heat exchanger;

[0095] According to the preset temperature and the current temperature, the operation of the first heat exchanger and the target heat exchanger is controlled.

[0096] In one embodiment, a computer program product is provided, comprising a computer program, which, when executed by a processor, implements the following steps:

[0097] According to the cooling type of the motor under test, a target heat exchanger is selected from the second heat exchanger and the third heat exchanger;

[0098] According to the preset temperature and the current temperature, the operation of the first heat exchanger and the target heat exchanger is controlled.

[0099] Those skilled in the art can understand that all or part of the processes in the above-mentioned embodiment methods can be completed by instructing the relevant hardware through a computer program, and the computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, any reference to the memory, database or other medium used in the embodiments provided in this application can include at least one of non-volatile and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetoresistive random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory can include random access memory (RAM) or external cache memory, etc. As an illustration and not limitation, RAM can be in various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM). The database involved in each embodiment provided in this application may include at least one of a relational database and a non-relational database. Non-relational databases may include distributed databases based on blockchains, etc., but are not limited to this. The processor involved in each embodiment provided in this application may be a general-purpose processor, a central processing unit, a graphics processor, a digital signal processor, a programmable logic device, a data processing logic device based on quantum computing, etc., but are not limited to this.

[0100] The technical features of the above embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0101] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the attached claims.

Claims

1. A cooling system for motor testing, characterized in that: The cooling system comprises a first heat exchanger, a second heat exchanger, a third heat exchanger, a water tank and an oil tank; The primary pipeline of the first heat exchanger is connected to the chilled water pipeline; the secondary pipeline of the first heat exchanger is connected to two branch pipelines, namely the first branch pipeline and the second branch pipeline, the other end of the first branch pipeline is connected to the primary pipeline of the second heat exchanger, the secondary pipeline of the second heat exchanger is connected to the water tank, and the second heat exchanger is used to cool the water medium in the water tank when it is working; the other end of the second branch pipeline is connected to the primary pipeline of the third heat exchanger; the secondary pipeline of the third heat exchanger is connected to the oil tank, and the third heat exchanger is used to cool the oil medium in the oil tank when it is working; The water tank is used to provide water medium for the motor under test; the oil tank is used to provide oil medium for the motor under test.

2. The system according to claim 1, characterized in that The second heat exchanger is disposed in the water tank; the third heat exchanger is disposed in the oil tank; The first branch pipeline and the second branch pipeline are provided with solenoid valves.

3. The system according to claim 2, characterized in that One end of the secondary side pipeline of the second heat exchanger is connected to the water inlet pipeline, and the other end is connected to the water outlet pipeline; the water inlet of the water inlet pipeline is arranged near the bottom of the water tank; a water pump is arranged on the water inlet pipeline for extracting the water medium in the water tank; the water outlet pipeline is used to discharge the water medium after being cooled by the second heat exchanger.

4. The system according to claim 2, characterized in that One end of the secondary pipeline of the third heat exchanger is connected to the oil inlet pipeline, and the other end is connected to the oil outlet pipeline; the oil inlet of the oil inlet pipeline is arranged near the bottom of the oil tank; a first oil pump is arranged on the oil inlet pipeline for extracting the oil medium in the oil tank; the oil outlet pipeline is used to discharge the oil medium after being cooled by the third heat exchanger.

5. The system according to claim 1, characterized in that: The water tank and the oil tank are both provided with heating devices.

6. The system according to claim 1, characterized in that The water tank is provided with a first test cavity corresponding to the water tank, wherein the first test cavity is used to test the motor under test which is cooled or heated by water medium; The first test cavity is connected to the water tank through a first connecting pipeline; the first connecting pipeline is provided with an air blowing device, and the air blowing device is connected to the water inlet pipe in the first connecting pipeline through the air blowing pipeline; the air blowing pipeline is provided with an electromagnetic valve; The first connecting pipeline is provided with at least one of a temperature collection unit, a pressure collection unit and a flow collection unit.

7. The system according to claim 1, characterized in that The oil tank is provided with a second test cavity corresponding to the oil tank, wherein the second test cavity is used to test the motor under test which is heated or cooled by oil medium; The second test cavity is connected to the oil tank via a second connecting pipeline; the second connecting pipeline is provided with an air blowing device, the air blowing device is connected to the oil inlet pipe in the second connecting pipeline via the air blowing pipeline; the air blowing pipeline is provided with an electromagnetic valve; The second connecting pipeline is provided with at least one of a temperature collecting unit, a pressure collecting unit and a flow collecting unit.

8. The system according to claim 1, characterized in that The bottom of the second test cavity is provided with an oil return pipe, the other end of which is connected to a collection box; the collection box is also connected to an oil tank through an upper oil pipe; and a second oil pump is provided on the upper oil pipe.

9. A temperature control method, characterized in that: Applicable to the cooling system for motor testing as described in any one of claims 1 to 8, the method comprising: According to the cooling type of the motor under test, a target heat exchanger is selected from the second heat exchanger and the third heat exchanger; According to the preset temperature and the current temperature, the first heat exchanger and the target heat exchanger are controlled to operate.

10. A temperature control device, characterized in that: For implementing the temperature control method according to any one of claims 9 or 10, the device comprises: A selection module, used for selecting a target heat exchanger from the second heat exchanger and the third heat exchanger according to a cooling type of the motor under test; The control module is used to control the operation of the first heat exchanger and the target heat exchanger according to the preset temperature and the current temperature.

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