Cooling system test device and test method for integrated inverter

Abstract

The application discloses a cooling system test device and test method of an integrated converter, and the device comprises a flow regulating assembly, a connecting loop pipeline and at least two cooling systems on a train. The flow regulating assembly is arranged on the connecting loop pipeline and is used for regulating the flow of the connecting loop pipeline. The cooling systems are sequentially connected. The water inlet of one cooling system is connected with one end of the connecting loop pipeline, the water outlet of the water pump is connected with the water inlet of another cooling system, and the cooling systems are connected with the connecting loop pipeline to form a loop. The original cooling systems of the train are connected with each other, so that the test efficiency is improved, the test cost is reduced, and the installation and connection time of the test equipment is reduced.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of cooling system testing, in particular to a cooling system testing device and testing method for integrated converter. BACKGROUND

[0002] With the development of rail transit, the running speed of rail transit trains is getting faster and faster, and the traction power of the trains is getting higher and higher. With the increase of traction power, the volume and weight of the train traction equipment also increase accordingly. However, due to the limited installation space of the train, different traction equipment needs to be integrated to reduce the volume and weight. In the aspect of high-power traction equipment, due to high power and high loss, a water-cooling heat dissipation method with larger heat capacity is usually used to ensure the normal operation of the equipment.

[0003] In order to ensure the reliability of the water-cooling system, the cooling systems of different traction equipment need to be tested. The water-cooling circuits of different equipment are relatively independent. Therefore, during the water-cooling system testing process, some functions need to be verified respectively, and additional corresponding test equipment needs to be configured. The test equipment is used to simulate the operation of the cooled equipment during the train operation. Therefore, the test efficiency of the water-cooling system needs to be further improved by using the traditional testing method. SUMMARY

[0004] The present disclosure provides a cooling system testing device and testing method for integrated converter.

[0005] In one aspect of the present disclosure, a cooling system testing device for integrated converter is provided, comprising a flow regulating assembly, a connecting circuit pipeline and at least two cooling systems located on a train.

[0006] The flow regulating assembly is arranged on the connecting circuit pipeline, and the flow regulating assembly is used to regulate the flow of the connecting circuit pipeline.

[0007] Each of the cooling systems is connected in sequence.

[0008] The water inlet of one of the cooling systems is connected to one end of the connecting circuit pipeline, and the other end of the connecting circuit pipeline is connected to the water outlet of another cooling system. Each of the cooling systems is connected to the connecting circuit pipeline to form a circuit.

[0009] Each of the cooling systems is used as a test equipment when one of the cooling systems is used as a measured cooling system.

[0010] In one embodiment, the cooling system comprises a first cooling system and a second cooling system.

[0011] The water inlet of the first cooling system is communicated with one end of the connecting loop pipe, the water outlet of the first cooling system is communicated with the water inlet of the second cooling system, and the water outlet of the second cooling system is communicated with the other end of the connecting loop pipe.

[0012] In one of the embodiments, a flow detection component is further included, which is arranged on the connecting loop pipe, and the flow regulation component is used to detect the flow of the connecting loop pipe.

[0013] In one of the embodiments, the flow regulation component includes a flow regulation valve.

[0014] In one of the embodiments, the number of the cooling systems is less than or equal to four.

[0015] In the second aspect of the present disclosure, a testing method of a cooling system of an integrated converter is provided, which is applied to the testing device of any of the above-mentioned embodiments, and includes the following steps:

[0016] Based on a first preset flow value, the flow regulation component is started or adjusted;

[0017] The water pump of the current cooling system to be tested is started, and the water pumps of other cooling systems are closed or kept closed;

[0018] The current cooling system to be tested is tested;

[0019] After the current cooling system to be tested is tested, the water pump of the current cooling system to be tested is closed, another cooling system is set as the next cooling system to be tested according to a preset testing sequence, the water pump of the next cooling system to be tested is started, and the water pumps of other cooling systems are closed or kept closed;

[0020] The next cooling system to be tested is tested.

[0021] In one of the embodiments, the step of starting or adjusting the flow regulation component based on the preset flow value includes the following steps:

[0022] The pressure in each of the cooling systems and the connecting loop pipe is kept;

[0023] Whether there is a leakage in the connection between each of the cooling systems and the connecting loop pipe is detected;

[0024] When there is no leakage in the connection between each of the cooling systems and the connecting loop pipe, the flow regulation component is started or adjusted based on the first preset flow value.

[0025] In one of the embodiments, before the step of testing the next cooling system to be tested, the following step is further included:

[0026] adjust the flow regulating component based on the second preset flow value.

[0027] In one of the embodiments, the test device further comprises a flow detection component arranged on the connection loop pipe, and the flow regulating component is used to detect the flow of the connection loop pipe.

[0028] The step of starting or adjusting the flow regulating component based on the first preset flow value comprises:

[0029] detecting the real-time flow of the connection loop pipe by using the flow detection component;

[0030] adjusting the real-time flow of the flow regulating component based on the first preset flow value, so that the real-time flow is equal to the first preset flow value.

[0031] In one of the embodiments, the number of cooling systems is less than or equal to four.

[0032] The cooling system test device of the integrated converter provided by the present disclosure utilizes the mutual connection between the original cooling systems of the train. During the test, the cooling systems serve as test equipment for each other, and no additional test equipment is needed, which reduces the test cost and also reduces the installation and connection time of the test equipment, and the test efficiency is improved by more than 30%, which effectively improves the test efficiency. In addition, by connecting multiple cooling systems through the connection loop pipe, the leakage test of two systems can be completed at one time, and the efficiency is improved by 50% compared with the separate pressure maintenance of two cooling systems. BRIEF DESCRIPTION OF DRAWINGS

[0033] The present disclosure will be described in more detail below based on the embodiments and with reference to the accompanying drawings:

[0034] Figure 1 A connection structure diagram of a cooling system test device of an integrated converter provided by an embodiment of the present disclosure;

[0035] Figure 2 A flowchart of a cooling system test method of an integrated converter provided by an embodiment of the present disclosure;

[0036] Figure 3 A connection structure diagram of a cooling system test device of an integrated converter provided by another embodiment of the present disclosure.

[0037] In the drawings, the same components are denoted by the same reference numerals, and the drawings are not drawn according to the actual scale. DETAILED DESCRIPTION

[0038] In order to make the technical personnel in the art better understand the technical solutions of the present disclosure, and to fully understand and implement the implementation process of the present disclosure how to apply technical means to solve technical problems and achieve the corresponding technical effects, the technical solutions in the embodiments of the present disclosure will be described clearly and completely below in conjunction with the drawings in the embodiments of the present disclosure. Obviously, the described embodiments are only a part of the embodiments of the present disclosure, not all. The embodiments of the present disclosure and various features in the embodiments can be combined with each other without conflict, and the technical solutions formed thereby are all within the protection scope of the present disclosure. Based on the embodiments in the present disclosure, all other embodiments obtained by those of ordinary skill in the art without creative labor should be within the protection scope of the present disclosure.

[0039] It should be noted that the terms "first", "second" and the like in the specification and claims of the present disclosure and the above-described drawings are used to distinguish similar objects, and do not necessarily have to describe a specific order or a chronological sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances, so that the embodiments of the present disclosure described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion, for example, a process, method, system, product or device including a series of steps or units does not have to be limited to those steps or units clearly listed, but can include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0040] It should be noted that the steps shown in the flowchart of the drawings can be executed in a computer system such as a set of computer executable instructions, and although a logical order is shown in the flowchart, in some cases, the steps shown or described herein can be executed in an order different from that described herein.

[0041] Example One

[0042] Figure 1 A structural schematic diagram of a cooling system test device of an integrated converter provided by an embodiment of the present disclosure is shown. As shown in Figure 1 A cooling system test device of an integrated converter, comprising: a flow regulating assembly, a connection circuit pipeline and at least two cooling systems on a train;

[0043] The flow regulating assembly is arranged on the connection circuit pipeline, and the flow regulating assembly is used to regulate the flow of the connection circuit pipeline;

[0044] The cooling systems are sequentially connected; wherein the water inlet of one of the cooling systems is connected with one end of the connecting loop pipe, the other end of the connecting loop pipe is connected with the water outlet of another cooling system, and each of the cooling systems is connected with the connecting loop pipe to form a loop, and each of the cooling systems is used as a test cooling system when one of the cooling systems is used as a measured cooling system.

[0045] Specifically, each of the cooling systems comprises a heat exchanger and a water pump, and the outlet of the heat exchanger is connected with the inlet of the water pump belonging to the same cooling system.

[0046] The cooling systems are sequentially connected and connected with the connecting loop pipe, wherein the water inlet of the heat exchanger of one of the cooling systems is connected with one end of the connecting loop pipe, the water outlet of the water pump is connected with the water inlet of the heat exchanger of another cooling system, and the water outlet of the water pump of one of the cooling systems is connected with the other end of the connecting loop pipe.

[0047] In the embodiment, the cooling systems are water cooling systems. The cooling systems are used for cooling the traction equipment of the train, and each of the cooling systems is the original cooling system of the train. When the cooling systems are connected and connected with the connecting loop pipe, a test device is formed, and each of the cooling systems can be used as a test cooling system or a measured cooling system.

[0048] In the embodiment, the heat exchanger and the water pump belonging to the same cooling system are connected with each other, the water inlet of the heat exchanger of the first cooling system is connected with one end of the connecting loop pipe, the water outlet of the water pump of the last cooling system is connected with the other end of the connecting loop pipe, and the water outlet of the water pump of one of the two adjacent cooling systems in the connection sequence is connected with the water inlet of the heat exchanger of the other cooling system, so as to realize the connection of the cooling systems. It is worth mentioning that the first, the last and the connection sequence in the embodiment are irrelevant to the actual position of the cooling systems on the train, and the first, the last and the connection sequence in the embodiment can be arranged according to the arrangement position of the cooling systems on the train or can not be arranged according to the arrangement position of the cooling systems on the train.

[0049] Specifically, during the test, two of the cooling systems are connected in series, but the water pump of the tested cooling system is started, and the other cooling system does not work, the cooling liquid flows through the loop of the other cooling system, and the internal flow channel is used to form the liquid flow resistance, so as to simulate the resistance of the internal waterway of the motor during the actual work, match the head of the water pump, make the water pump work at the actual working point, and achieve the test purpose.

[0050] During the test, first, the water pump of one of the cooling systems is started to circulate the cooling water in the cooling system and the connecting circuit pipeline, and the water pumps of the other cooling systems are closed, and the other cooling systems are used as test auxiliary equipment to simulate the traction equipment during the train operation, so that the first cooling system is tested. When the first cooling system is tested, the water pump of the cooling system is closed, and the water pump of the next cooling system is started, and the water pumps of the other cooling systems are kept closed, and the next cooling system is tested.

[0051] In the embodiment, the original cooling systems of the train are connected with each other, and during the test, the cooling systems are used as test auxiliary equipment, without the need to add test auxiliary equipment, thereby reducing the test cost, and also reducing the installation and connection time of the test auxiliary equipment, and the test efficiency is improved by more than 30%, and the test efficiency is effectively improved. In addition, by using the method of the present disclosure, the multiple cooling systems are connected through the connecting circuit pipeline, and the leakage test of the two systems can be completed at one time, and compared with the separate pressure maintaining of the two cooling systems, the efficiency is improved by 50%.

[0052] In addition, by connecting the multiple cooling systems and the connecting circuit pipeline to form a loop, the leakage test can be performed at one time, thereby shortening the leakage detection time, without the need to test the leakage of each cooling system one by one, shortening the preparation time before the test, and further improving the measurement efficiency.

[0053] Example Two

[0054] On the basis of the above-mentioned embodiment, the cooling system in the embodiment comprises a first cooling system and a second cooling system;

[0055] The water inlet of the first cooling system is in communication with one end of the connecting circuit pipeline, the water outlet of the first cooling system is in communication with the water inlet of the second cooling system, and the water outlet of the second cooling system is in communication with the other end of the connecting circuit pipeline; the first cooling system and the second cooling system are used for: when the first cooling system is used as a measured cooling system, the second cooling system is used as test auxiliary equipment, and when the second cooling system is used as a measured cooling system, the first cooling system is used as test auxiliary equipment.

[0056] Specifically, the first cooling system comprises a first heat exchanger and a first water pump, and the second cooling system comprises a second heat exchanger and a second water pump;

[0057] The water inlet of the first heat exchanger is in communication with one end of the connecting circuit pipeline, the output port of the first heat exchanger is in communication with the input port of the first water pump, the water outlet of the first water pump is in communication with the water inlet of the second heat exchanger, the output port of the second heat exchanger is in communication with the input port of the second water pump, and the water outlet of the second water pump is in communication with the other end of the connecting circuit pipeline.

[0058] In this embodiment, two cooling systems are applied, which are a first cooling system and a second cooling system. When the first cooling system is tested, the second cooling system is used as a test equipment; when the second cooling system is tested, the first cooling system is used as a test equipment.

[0059] In this embodiment, the cooling system test device is built in pairs on the train, which can effectively improve the test efficiency and reduce the connection complexity of the test device.

[0060] In order to realize the flow detection of the connection circuit pipeline, in one embodiment, the test device further comprises a flow detection assembly, which is arranged on the connection circuit pipeline, and the flow adjustment assembly is used to detect the flow of the connection circuit pipeline.

[0061] In this embodiment, as shown in Figure 1 The flow detection assembly comprises a flow meter, which can detect the flow of the connection circuit pipeline in real time. Thus, when the flow adjustment assembly adjusts the flow of the connection circuit pipeline, the tester can know the flow of the connection circuit pipeline in real time, and then realize the accurate adjustment of the flow of the connection circuit pipeline.

[0062] In order to realize the flow adjustment of the connection circuit pipeline, in one embodiment, the flow adjustment assembly comprises a flow adjustment valve. In this embodiment, the flow adjustment valve is used to adjust the flow of the connection circuit pipeline, and by adjusting the opening of the flow adjustment valve, the flow of the connection circuit pipeline can be adjusted.

[0063] Specifically, the flow of the test device is different, and the pressure is also different. Therefore, by adjusting the flow of the connection circuit pipeline through the flow adjustment valve, the flow of the test device can be adjusted, so as to adjust the pressure of the test device. Corresponding to different cooling systems to be tested, the flow and pressure of the test equipment (simulated traction equipment) are different. Therefore, by adjusting the flow of the connection circuit pipeline through the flow adjustment valve, the flow of the connection circuit pipeline can be adjusted according to the flow of the test equipment, so that the test of the cooling system is more accurate, so that the working pressure of the test device is consistent with the actual working pressure, and more accurate test is realized.

[0064] In order to improve the test accuracy, in one of the embodiments, the number of cooling systems is less than or equal to four.

[0065] It should be understood that when the number of connected cooling systems is greater, the length of the connected pipeline is greater, and the loop of the test device as a whole is greater, on the one hand, it leads to too small pressure of each cooling system in the test device, and the too small pressure easily leads to inaccurate test results, and in order to maintain a relatively appropriate pressure, it leads to increased load of the water pump of the currently tested cooling system, on the other hand, due to the large number of connected cooling systems, it easily leads to uneven pressure distribution of the test loop including each cooling system and the connected loop pipeline, it is difficult to ensure the pressure distribution, and it will also lead to inaccurate test results. Therefore, in the embodiment, the number of cooling systems is less than or equal to four, on the one hand, four cooling systems are connected at a time, and each cooling system is tested one by one on this basis, which can further improve the test efficiency, on the other hand, it can effectively avoid uneven pressure distribution caused by too long loop, thereby effectively ensuring the accuracy of the test results.

[0066] Example Three

[0067] In the embodiment, a cooling system test method of an integrated converter is provided, which is applied to the test device in any of the above-mentioned embodiments, as shown in the figure, the method comprises: Figure 2

[0068] Step 310, based on the first preset flow value, the flow adjusting assembly is started or adjusted.

[0069] In the embodiment, the first preset flow value is determined according to the flow value of the test equipment or determined according to the flow of the cooling water of the traction equipment connected with the cooling system on the train, so that the flow adjustment of the flow adjusting assembly to the connected loop pipeline is the same as the flow of the test equipment or the flow of the cooling water of the traction equipment connected with the cooling system on the train, so that the pressure of each cooling system and the connected loop pipeline is the same as the actual pressure in the operation process of the cooling system of the train, so as to accurately test the cooling system.

[0070] Step 320, starting the water pump of the currently tested cooling system, and closing or keeping closed the water pump of other cooling systems.

[0071] In the embodiment, the currently tested cooling system is the cooling system that needs to be tested at present, therefore, the water pump of the currently tested cooling system is started, and the water pump of other cooling systems that do not participate in the test and serve as test equipment is closed or kept closed, so that other cooling systems serving as test equipment are only used for cooling water circulation and provide test function, without providing power of the water pump. In the embodiment, the water pump of the currently tested cooling system is started, and the water pump of the currently tested cooling system provides power for the circulation of the cooling water.

[0072] Step 330, testing the currently tested cooling system.​

[0073] In the embodiment, the cooling system to be tested is tested to test whether the cooling function and other auxiliary functions of the cooling system can work normally.

[0074] In step 340, after the cooling system to be tested is tested, the water pump of the cooling system to be tested is closed, another cooling system is set as the next cooling system to be tested according to a preset test sequence, the water pump of the next cooling system to be tested is opened, and the water pumps of other cooling systems are closed or kept closed.

[0075] In the embodiment, after the cooling system to be tested is tested, the water pump of the next cooling system to be tested is opened, and the water pumps of other cooling systems are closed or kept closed, so as to prepare for the test of the next cooling system to be tested.

[0076] In step 350, the next cooling system to be tested is tested.

[0077] In the embodiment, the next cooling system to be tested is tested according to the above process until all the test systems in the test device are tested.

[0078] In the embodiment, the mutual connection between the original cooling systems of the train is utilized, the water pumps of the cooling systems are opened in sequence during the test, and the cooling systems are tested in sequence. During the test process, the cooling systems are the test equipment of other cooling systems, and no additional test equipment is needed, which reduces the test cost, reduces the installation and connection time of the test equipment, and improves the test efficiency by more than 30%, thereby effectively improving the test efficiency. In addition, by using the method of the disclosure, the multiple cooling systems are connected through the connection circuit pipeline, and the leakage test of the two systems can be completed at one time, and the efficiency is improved by 50% compared with the separate pressure maintaining of the two cooling systems.

[0079] In one embodiment, the step of opening or adjusting the flow adjusting assembly based on the preset flow value comprises:

[0080] maintaining the pressure in each cooling system and the connection circuit pipeline;

[0081] detecting whether there is leakage in the connection between each cooling system and the connection circuit pipeline;

[0082] when there is no leakage in the connection between each cooling system and the connection circuit pipeline, opening or adjusting the flow adjusting assembly based on the first preset flow value.

[0083] In the embodiment, before the test, the water pumps of all the cooling systems are opened, and the water pumps of the connection circuit pipeline are closed. Figure 3The test device detects whether there is a leakage between each cooling system and the connecting circuit pipeline, repairs the position of the leakage (repairing the leakage) when there is a leakage between each cooling system and the connecting circuit pipeline, detects again whether there is a leakage between each cooling system and the connecting circuit pipeline after the repair, and starts the test of the cooling system by opening or adjusting the flow adjusting assembly based on the first preset flow value when there is no leakage between each cooling system and the connecting circuit pipeline. In the embodiment, the leakage test can be performed at one time by connecting the cooling systems and the connecting circuit pipeline, thereby shortening the leakage detection time, avoiding the leakage test of each cooling system one by one, shortening the preparation time before the test, and further improving the measurement efficiency.

[0084] In one embodiment, the step of testing the next cooling system further comprises adjusting the flow adjusting assembly based on a second preset flow value before the step of testing the next cooling system. In the embodiment, the flow of the test device needs to be adjusted before the next cooling system is tested, so that the pressure of each cooling system and the connecting circuit pipeline in the test device is equal to the actual pressure of the next cooling system during the operation of the train, so as to accurately test the cooling system.

[0085] In one embodiment, the step of testing the next cooling system further comprises adjusting the flow adjusting assembly based on a second preset flow value before the step of testing the next cooling system. In the embodiment, the flow of the test device needs to be adjusted before the next cooling system is tested, so that the pressure of each cooling system and the connecting circuit pipeline in the test device is equal to the actual pressure of the next cooling system during the operation of the train, so as to accurately test the cooling system. Figure 3

[0086] In one embodiment, the test device further comprises a flow detection assembly arranged on the connecting circuit pipeline, and the flow adjusting assembly is used for detecting the flow of the connecting circuit pipeline. The step of opening or adjusting the flow adjusting assembly based on the first preset flow value comprises detecting the real-time flow of the connecting circuit pipeline by using the flow detection assembly, and adjusting the real-time flow of the flow adjusting assembly based on the first preset flow value, so that the real-time flow is equal to the first preset flow value.

[0087] In the embodiment, the flow detection assembly can detect the flow of the connecting circuit pipeline in real time, so that the tester can know the real-time flow of the connecting circuit pipeline in real time when the flow adjusting assembly adjusts the flow of the connecting circuit pipeline, and the flow of the connecting circuit pipeline can be accurately adjusted, so that the real-time flow of the connecting circuit pipeline is equal to the first preset flow value.

[0088] ​In one of the embodiments, the number of the cooling systems is less than or equal to four. It should be understood that the more the number of the connected cooling systems, the longer the length of the connected pipeline, and the larger the loop of the whole test device, which on one hand leads to too small pressure of each cooling system in the test device, and the too small pressure easily leads to inaccurate test result, and in order to maintain a proper pressure, the load of the water pump of the current cooling system to be tested is increased, and on the other hand, due to the large number of the connected cooling systems, the pressure distribution of the test loop including the cooling systems and the connected pipeline is uneven, and it is difficult to ensure the pressure distribution, which also leads to inaccurate test result. Therefore, in the embodiment, the number of the cooling systems is less than or equal to four, on one hand, four cooling systems are connected at a time, and each cooling system is tested one by one based on this, which can further improve the test efficiency, and on the other hand, the uneven pressure distribution caused by the too long loop can be effectively avoided, so as to effectively ensure the accuracy of the test result.

[0089] Example Four

[0090] In the embodiment, as shown in Figure 1 , the water outlet of the first cooling system is connected with the water inlet of the second cooling system, and the water inlet of the second cooling system is connected with the water outlet of the first cooling system. When the first cooling system is tested, the second cooling system is used as a test system, the working pressure of the system is ensured to be consistent with the actual working pressure by adjusting the flow regulating valve in the connected pipeline, the pump of the first cooling system is started, and one cooling system is tested. When the second cooling system is tested, the first cooling system is used as a test system, and the first cooling system is tested similarly, the pump of the second cooling system is started, and the second cooling system is tested. The test flow chart is shown in Figure 3 . Two motor water cooling systems are connected, and the regulating valve is arranged between the pipelines. When the cooling system is tested, one of the cooling systems needs to be tested, and the other one is used as a test device, and the valve in the connecting pipeline is adjusted to ensure that the cooling and the actual working point are consistent.

[0091] By using the above method, the test auxiliary equipment is reduced, the test cost is reduced, and the installation and connection time of the test auxiliary equipment is also reduced, and the test efficiency is improved by more than 30%. In addition, by using the method of the present application, two sets of cooling systems are connected through the connecting pipeline, and the leakage test of the two sets of systems can be completed at one time, and compared with the separate pressure maintaining of the two sets of cooling systems, the efficiency is improved by 50%.

[0092] In the embodiments provided by the present disclosure, it should be understood that the disclosed apparatus and method can also be implemented in other manners. The embodiments described above are merely exemplary for describing the present disclosure. For example, the flowcharts and block diagrams in the accompanying drawings show the possible implementation architectures, functions and operation of the apparatus, method and computer program product according to the embodiments of the present disclosure. In this regard, each block in the flowcharts and block diagrams can represent a module, a program segment or a part of code, which contains one or more executable instructions for implementing the specified logic function. It should also be noted that, in some alternative implementations, the functions noted in the blocks can occur in a different order from that noted in the accompanying drawings. For example, two consecutive blocks can actually be executed substantially in parallel, and sometimes they can be executed in reverse order, depending on the functions involved. It should also be noted that each block in the block diagrams and / or flowcharts, and the combination of blocks in the block diagrams and / or flowcharts, can be implemented by a dedicated hardware-based system for implementing the specified functions or actions, or can be implemented by a combination of dedicated hardware and computer instructions.

[0093] It should be noted that, in the present disclosure, the terms "comprising", "containing" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such a process, method, article or apparatus. Without more limitations, the element limited by the statement "comprising a" does not exclude the presence of other identical elements in the process, method, article or apparatus including the element.

[0094] Although the embodiments disclosed by the present disclosure are as described above, the above description is only for the purpose of facilitating the understanding of the present disclosure, and is not intended to limit the present disclosure. Any person skilled in the art without departing from the spirit and scope of the present disclosure can make any modifications and changes in the implementation form and details, but the patent protection scope of the present disclosure shall be subject to the scope defined by the appended claims.

Claims

1. An integrated power converter cooling system test apparatus, comprising: The test device comprises: a flow regulating assembly, a connecting loop pipeline and at least two cooling systems on the train; the flow regulating assembly is arranged on the connecting loop pipeline and is used for regulating the flow of the connecting loop pipeline; each of the cooling systems is connected in sequence; an inlet of one of the cooling systems is connected with one end of the connecting loop pipeline, the other end of the connecting loop pipeline is connected with an outlet of another of the cooling systems, and each of the cooling systems is connected with the connecting loop pipeline to form a loop; each of the cooling systems is used for: when one of the cooling systems is taken as a measured cooling system, the rest of the cooling systems are taken as test equipment.

2. The apparatus of claim 1, wherein, The cooling systems comprise a first cooling system and a second cooling system; an inlet of the first cooling system is connected with one end of the connecting loop pipeline, an outlet of the first cooling system is connected with an inlet of the second cooling system, and an outlet of the second cooling system is connected with the other end of the connecting loop pipeline.

3. The apparatus of claim 1, wherein, The test device further comprises a flow detecting assembly arranged on the connecting loop pipeline, and the flow regulating assembly is used for detecting the flow of the connecting loop pipeline.

4. The apparatus of claim 1, wherein, The flow regulating assembly comprises a flow regulating valve.

5. The apparatus of claim 1, wherein, The number of the cooling systems is less than or equal to four.

6. A method of testing a cooling system of an integrated inverter, the method comprising: The test device is applied to any one of claims 1-5 and comprises: based on a first preset flow value, opening or regulating the flow regulating assembly; opening a water pump of a current cooling system to be tested and closing or keeping closed water pumps of the rest of the cooling systems; testing the current cooling system to be tested; after testing the current cooling system to be tested, closing the water pump of the current cooling system to be tested, taking another cooling system as a next cooling system to be tested according to a preset test sequence, opening the water pump of the next cooling system to be tested, and closing or keeping closed water pumps of the rest of the cooling systems; testing the next cooling system to be tested.

7. The method according to claim 6, characterized in that The step of based on the first preset flow value, opening or regulating the flow regulating assembly comprises: keeping the pressure in each of the cooling systems and the connecting loop pipeline; detecting whether there is a leakage in the connection between each of the cooling systems and the connecting loop pipeline; when there is no leakage in the connection between each of the cooling systems and the connecting loop pipeline, based on the first preset flow value, opening or regulating the flow regulating assembly.

8. The method of claim 6, wherein, The step of testing the next cooling system to be tested further comprises: based on a second preset flow value, regulating the flow regulating assembly.

9. The method of claim 6, wherein, The test device further comprises a flow detecting assembly arranged on the connecting loop pipeline, and the flow regulating assembly is used for detecting the flow of the connecting loop pipeline. The step of based on the first preset flow value, opening or regulating the flow regulating assembly comprises: detecting the real-time flow of the connecting loop pipeline by using the flow detecting assembly; based on the first preset flow value, regulating the real-time flow of the flow regulating assembly so that the real-time flow is equal to the first preset flow value.

10. The method of claim 6, wherein, The number of the cooling systems is less than or equal to four.

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