Multi-branch parallel liquid cooling power module testing device

Abstract

The invention discloses a multi-branch parallel liquid cooling power module testing device. The front end of the main water inlet pipe is provided with a main water inlet pipe connector used for being connected with a water supply device; the main water return pipe and the main water inlet pipe are arranged in parallel, and a main water return pipe connector used for being connected with a water supply device is arranged at the front end of the main water return pipe; the branches are arranged between the main water inlet pipe and the main water return pipe in parallel, and the starting ends and the tail ends of the branches are connected with the main water inlet pipe and the main water return pipe respectively; a ball valve, a pressure gauge, an electromagnetic valve, a flow meter and a test interface used for being connected with a power module to be tested are sequentially arranged on the branch circuit from the starting end to the tail end. The beneficial effects of the invention are that multiple groups of to-be-tested power modules can be tested at the same time; the device can simulate a heat dissipation parameter test, a flow equalizing test, a module dry burning test and a liquid cooling performance test of a power module.

Description

Technical Field

[0001] The invention relates to the technical field of power module testing, and in particular to a multi-branch parallel liquid-cooled power module testing device. Background Art

[0002] As the power level of wind power converters becomes higher and higher, liquid cooling becomes the main way to dissipate heat for power modules. During the use of liquid-cooled power modules, there are more and more test items involving liquid cooling, such as power module heat dissipation parameter testing, flow equalization testing, and module dry-burning testing. The difficulty in implementing test items to verify the performance of liquid-cooled modules has become one of the difficulties in testing. Testing the relevant flow parameters of liquid-cooled modules by R&D personnel is also a necessary step in product development.

[0003] Existing test devices can usually only test one power module to be tested at a time, resulting in low test efficiency and waste of manpower. Summary of the invention

[0004] The object of the present invention is to provide a multi-branch parallel liquid-cooled power module testing device, which has multiple branches between the main water inlet pipe and the main water return pipe, and is provided with ball valves, pressure gauges, solenoid valves, flow meters and test interfaces on the branches, so that multiple groups of power modules to be tested can be tested simultaneously.

[0005] Another object of the present invention is to provide a multi-branch parallel liquid-cooled power module testing device that can simulate power module heat dissipation parameter testing, flow equalization testing, and module dry-burning testing involving liquid cooling performance testing.

[0006] To achieve the above object, the present invention adopts the following technical solutions, including:

[0007] A main water inlet pipe, the front end of which is provided with a main water inlet pipe interface for connecting to a water supply device;

[0008] A main water return pipe, which is arranged in parallel with the main water inlet pipe, and a main water return pipe interface for connecting to a water supply device is provided at the front end of the main water return pipe;

[0009] A plurality of branches are arranged in parallel between the main water inlet pipe and the main water return pipe, and the starting end and the end of the branch are connected to the main water inlet pipe and the main water return pipe respectively;

[0010] Wherein, a ball valve, a pressure gauge, a solenoid valve, a flow meter and a test interface for connecting with a power module to be tested are arranged in sequence from the starting end to the end of the branch line.

[0011] Preferably, it also includes:

[0012] A plurality of short-circuit pipelines are arranged in parallel on one side of the branch and correspond to the branch one by one. The starting end of the short-circuit pipeline is connected to the branch between the ball valve and the pressure gauge, and the end of the short-circuit pipeline is connected to the main return pipe;

[0013] A short-circuit pressure regulating valve is arranged on the short-circuit pipeline and is used to control the on-off of the short-circuit pipeline.

[0014] Preferably, it also includes:

[0015] The first temperature sensor and the second temperature sensor are respectively arranged on the water inlet interface and the water outlet interface of the test interface, and are used to detect the temperature of the fluid entering and flowing out of the power module to be tested.

[0016] Preferably, it also includes:

[0017] The digital display monitoring and control device is electrically connected to the pressure gauge, the solenoid valve, the flow meter, the first temperature sensor and the second temperature sensor on the multiple branch lines respectively.

[0018] Preferably, it also includes:

[0019] The main valve is arranged on the main water inlet pipe and located in front of the multiple branches, and is used to control the on-off of the main water inlet pipe.

[0020] Preferably, it also includes:

[0021] A memory is arranged in the digital display monitoring and control device and is used to record data of the digital display monitoring and control device.

[0022] Preferably, the adjustment accuracy of the solenoid valve is 0.5%; the indication accuracy of the flow meter is 0.01.

[0023] Preferably, the number of the multiple branches is 8.

[0024] Preferably, the test interface is detachably connected to the branch circuit, and the test interface is provided with various models, which can be respectively adapted to various power modules to be tested.

[0025] The beneficial effects of the present invention are: it can test multiple groups of power modules to be tested at the same time, and it can simulate power module heat dissipation parameter testing, flow equalization testing, module dry-burning testing involving liquid cooling performance testing. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 The present invention is a schematic diagram of a multi-branch parallel liquid-cooled power module testing device.

[0027] Figure 2 The present invention is a schematic diagram of a multi-branch parallel liquid-cooled power module testing device. DETAILED DESCRIPTION

[0028] The invention is further described in detail below in conjunction with the accompanying drawings so that those skilled in the art can implement it according to the description.

[0029] It should be understood that terms such as “having”, “including” and “comprising” used herein do not exclude the existence or addition of one or other elements or combinations thereof.

[0030] like Figure 1-2 As shown, a multi-branch parallel liquid-cooled power module testing device 1 of the present invention comprises:

[0031] A main water inlet pipe 110, a main water inlet pipe interface 111 for connecting to a water supply device is provided at its front end; a main return pipe 120, which is arranged in parallel with the main water inlet pipe 110, and a main return pipe interface 121 for connecting to a water supply device is provided at the front end of the main return pipe 120; multiple branches 130, which are arranged in parallel between the main water inlet pipe 110 and the main return pipe 120, and the starting end and the end of the branch 130 are respectively connected to the main water inlet pipe 110 and the main return pipe 120; wherein, a ball valve 131, a pressure gauge 132, a solenoid valve 133, a flow meter 134 and a test interface 135 for connecting to the power module 2 to be tested are sequentially arranged on the branch 130 from the starting end to the end. As a preference, the first temperature sensor 136 and the second temperature sensor 137 are respectively arranged on the water inlet interface 135a and the water outlet interface 135b of the test interface 135, and are used to detect the temperature of the fluid entering and flowing out of the power module 2 to be tested.

[0032] During use, multiple power modules 2 to be tested are connected to the test interface 135, and then the ball valve 131 and the solenoid valve 133 on the branch 130 where the power module 2 to be tested is located are adjusted to adjust the flow on the branch 130, and then the liquid cooling performance of the power module 2 to be tested is tested at the same time. When the power module 2 to be tested is subjected to the current temperature rise test, the solenoid valve 133 is used to adjust the set flow of each branch 130. When the flow of each solenoid valve 133 is consistent, after the temperature rise is stable, the temperature difference between the first temperature sensor 136 and the second temperature sensor 137 is read, and the heat dissipation parameters can be calculated. When the solenoid valve 133 on the branch 130 is adjusted to make the flow of the solenoid valve 133 inconsistent, the temperature difference between the first temperature sensor 136 and the second temperature sensor 137 is read again. When the temperature difference is consistent with the design temperature difference, the extreme value of the flow equalization error can be measured, thereby realizing the flow equalization test. When the temperature rise test is performed, the ball valve 131 of the solenoid valve 133 is completely closed, the flow meter 134 of each branch 130 is observed to indicate zero, and the temperature values ​​of the first temperature sensor 136 and the second temperature sensor 137 are recorded, so as to perform a module dry-burning performance test.

[0033] In another embodiment, it also includes: a plurality of short-circuit pipelines 140, which are arranged in parallel on one side of the branch 130 and correspond to the branch 130 one by one, the starting end of the short-circuit pipeline 140 is connected to the branch 130 between the ball valve 131 and the pressure gauge 132, and the end of the short-circuit pipeline 140 is connected to the main return pipe 120; a short-circuit pressure regulating valve 141, which is arranged on the short-circuit pipeline 140 and is used to control the on-off of the short-circuit pipeline 140.

[0034] In another embodiment, it further includes: a first temperature sensor 136 and a second temperature sensor 137, which are respectively arranged on the water inlet interface 135a and the water outlet interface 135b of the test interface 135, and are used to detect the temperature of the fluid entering and flowing out of the power module 2 to be tested.

[0035] In another embodiment, it also includes: a digital display monitoring control device 150, which is electrically connected to the pressure gauge 132, the solenoid valve 133, the flow meter 134, the first temperature sensor 136 and the second temperature sensor 137 on the multiple branches.

[0036] In another embodiment, it further includes: a main valve 112 , which is arranged on the main water inlet pipe 110 and located in front of the multiple branches 130 , and is used to control the on-off of the main water inlet pipe 110 .

[0037] In another embodiment, it further includes: a memory 151 , which is disposed in the digital display monitoring and control device 150 and is used to record data of the digital display monitoring and control device 150 .

[0038] In another embodiment, the adjustment accuracy of the solenoid valve 133 is 0.5%; the indication accuracy of the flow meter 134 is 0.01.

[0039] In another embodiment, the number of the multiple branches 130 is 8.

[0040] In another embodiment, the test interface 135 is detachably connected to the branch 130 , and the test interface 135 is provided with multiple models, which can be respectively adapted to multiple power modules 2 to be tested.

[0041] In summary, the multi-branch parallel liquid-cooled power module testing device 1 of the present invention can test multiple groups of power modules to be tested at the same time.

[0042] Although the embodiments of the present invention have been disclosed as above, they are not limited to the applications listed in the specification and the implementation modes, and they can be fully applied to various fields suitable for the present invention. For those familiar with the art, additional modifications can be easily implemented. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the present invention is not limited to the specific details and the illustrations shown and described herein.

Claims

1. A multi-branch parallel liquid-cooled power module testing device, characterized in that: include: A main water inlet pipe, the front end of which is provided with a main water inlet pipe interface for connecting to a water supply device; a main water return pipe, which is arranged in parallel with the main water inlet pipe, the front end of the main water return pipe is provided with a main water return pipe interface for connecting to a water supply device; A plurality of branches are arranged in parallel between the main water inlet pipe and the main water return pipe, and the starting end and the end of the branch are connected to the main water inlet pipe and the main water return pipe respectively; Wherein, a ball valve, a pressure gauge, a solenoid valve, a flow meter and a test interface for connecting with a power module to be tested are arranged in sequence from the starting end to the end of the branch line.

2. The multi-branch parallel liquid-cooled power module testing device according to claim 1, characterized in that: Also includes: A plurality of short-circuit pipelines are arranged in parallel on one side of the branch and correspond to the branch one by one. The starting end of the short-circuit pipeline is connected to the branch between the ball valve and the pressure gauge, and the end of the short-circuit pipeline is connected to the main return pipe; A short-circuit pressure regulating valve is arranged on the short-circuit pipeline and is used to control the on-off of the short-circuit pipeline.

3. The multi-branch parallel liquid-cooled power module testing device according to claim 1 or 2, characterized in that: Also includes: The first temperature sensor and the second temperature sensor are respectively arranged on the water inlet interface and the water outlet interface of the test interface, and are used to detect the temperature of the fluid entering and flowing out of the power module to be tested.

4. The multi-branch parallel liquid-cooled power module testing device according to claim 3, characterized in that: Also includes: The digital display monitoring and control device is electrically connected to the pressure gauge, the solenoid valve, the flow meter, the first temperature sensor and the second temperature sensor on the multiple branch lines respectively.

5. The multi-branch parallel liquid-cooled power module testing device according to claim 1 or 2, characterized in that: Also includes: A main valve is arranged on the main water inlet pipe and located in front of the multiple branches, and is used to control the on-off of the main water inlet pipe.

6. The multi-branch parallel liquid-cooled power module testing device according to claim 4, characterized in that: Also includes: A memory is arranged in the digital display monitoring and control device and is used to record data of the digital display monitoring and control device.

7. The multi-branch parallel liquid-cooled power module testing device according to claim 1 or 2, characterized in that: The regulating accuracy of the solenoid valve is 0.5%; the indication accuracy of the flow meter is 0.

01.

8. The multi-branch parallel liquid-cooled power module testing device according to claim 1 or 2, characterized in that: The number of the multiple branches is 8.

9. The multi-branch parallel liquid-cooled power module testing device according to claim 1 or 2, characterized in that: The test interface is detachably connected to the branch circuit, and the test interface is provided with various models, which can be respectively adapted to various power modules to be tested.

Images