Testing device for power module of motor controller
By designing a motor controller power module testing device including test body and circuit board module, the problem of being unable to directly evaluate the current output capability of the motor controller power module in the prior art is solved, and an accurate evaluation of the current output capability is achieved.
Patent Information
- Application Number
- CN202421456016.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-24
- Publication Date
- 2025-05-23
- Estimated Expiration
- 2034-06-24
AI Technical Summary
The prior art is difficult to directly evaluate the chip temperature under different current output capabilities of the motor controller power module through a thermal imager, resulting in the inability to effectively evaluate the current output capability.
Design a test device for a motor controller power module, including a test body and a circuit board module. The test body includes a cooling part, a first mounting part and a second mounting part, and the circuit board module is installed at the second mounting part to ensure that the thermal imager can be aligned with the power module installed at the first mounting part and detect its temperature.
Through this test device, the temperature of the power module under different current output capabilities can be effectively evaluated, which solves the problem of not being able to directly evaluate the current output capability, and realizes an accurate evaluation of the current output capability of the power module of the motor controller.
Smart Images
Figure CN222896237U_ABST
Abstract
Description
Technical Field
[0001] The present disclosure relates to the technical field of power module testing, and in particular to a testing device for a motor controller power module. Background Art
[0002] As the power density requirements for motor controllers become higher and higher, the current output capability requirements for motor controller power modules are also increasing.
[0003] In the related art, in a motor controller using a power module, the power module is covered by a printed circuit board directly above it, and the chip area cannot be exposed. When testing the current output capacity of the power module, it is impossible to directly use a thermal imager to capture the chip temperature under different current output capacity conditions, resulting in the problem of being unable to evaluate the current output capacity. Utility Model Content
[0004] The purpose of the present disclosure is to provide a test device for a motor controller power module, which enables a thermal imager to be aimed at a power module installed on a first installation part, detect the temperature of the power module, and thus evaluate different current output capabilities.
[0005] In order to achieve the above object, the present disclosure provides a test device for a motor controller power module, comprising:
[0006] a test body, comprising a cooling portion, a first mounting portion for mounting a power module to be tested, and a second mounting portion located on one side in a first direction of the first mounting portion, wherein the cooling portion is used to cool the power module; and
[0007] The circuit board module is mounted on the second mounting portion so that the thermal imager can be aligned with the power module mounted on the first mounting portion and detect the temperature of the power module.
[0008] Optionally, there are a plurality of first mounting portions, and the plurality of first mounting portions are arranged at intervals along a second direction perpendicular to the first direction.
[0009] Optionally, the cooling portion comprises a cooling chamber having a liquid inlet and a liquid outlet, and an opening is formed on one side of the cooling chamber in the third direction, and the opening forms the first mounting portion.
[0010] Optionally, the testing device for the motor controller power module further comprises a sealing member provided on the first mounting portion for sealing the first mounting portion and the power module; and / or
[0011] The testing device for the motor controller power module also includes a pressing block detachably connected to the first mounting portion and used to fix the power module.
[0012] Optionally, the second mounting portion includes a plurality of circuit board fixing columns for fixing the circuit board module.
[0013] Optionally, the test body further includes a third mounting portion and a fourth mounting portion;
[0014] The power module testing device also includes a three-phase output module and a bus capacitor;
[0015] The three-phase output module is installed on the third installation portion, and the bus capacitor is installed on the fourth installation portion.
[0016] Optionally, the third mounting portion and the fourth mounting portion are respectively located on two opposite sides of the cooling portion in the first direction.
[0017] Optionally, the first mounting portion, the second mounting portion and the third mounting portion are located on the same side of the test body in the third direction;
[0018] The three-phase output module includes a wiring socket and a three-phase output copper busbar;
[0019] The third mounting portion includes a fixing structure for fixing the terminal block, and the test body is formed with a first through hole penetrating along the third direction, so that the three-phase output copper busbar passes through the first through hole from one side of the third direction of the test body and is connected to the terminal block on the other side.
[0020] Optionally, the three-phase output copper busbar is provided with a current sensor, the current sensor is located on a side of the test body away from the wiring seat in the third direction, and the current sensor is connected to the circuit board module through a wiring harness;
[0021] The test body is formed with a second through hole through which the wire harness passes.
[0022] Optionally, the testing device for the motor controller power module further comprises a leg connected to a side of the testing body facing away from the first mounting portion.
[0023] Through the above technical solution, the test device of the motor controller power module includes a test body and a circuit board module, wherein the test body includes a cooling part, a first mounting part and a second mounting part, the circuit board assembly is installed on the second mounting part, the first mounting part is used to install the power module to be tested, and the cooling part is used to cool the power module installed on the first mounting part. Since the second mounting part is located on one side of the first mounting part in the first direction, the circuit board module installed on the second mounting part will not block the power module to be tested installed on the first mounting part, and the thermal imager can be aligned with the power module installed on the first mounting part and detect the temperature of the power module, thereby evaluating different current output capabilities.
[0024] Other features and advantages of the present disclosure will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS
[0025] The accompanying drawings are used to provide a further understanding of the present disclosure and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present disclosure but do not constitute a limitation of the present disclosure. In the accompanying drawings:
[0026] Figure 1 It is a structural diagram of the first perspective of a testing device for a motor controller power module provided in some embodiments of the present disclosure.
[0027] Figure 2 It is a structural diagram from a second perspective of a testing device for a motor controller power module provided in some embodiments of the present disclosure.
[0028] Figure 3 is an exploded diagram of a testing device for a motor controller power module provided in some embodiments of the present disclosure.
[0029] Figure 4 It is a structural diagram of a test body and legs of a test device for a motor controller power module provided in some embodiments of the present disclosure.
[0030] Figure 5 1 is an exploded view of a test body and legs provided in some embodiments of the present disclosure from one perspective.
[0031] Figure 6 is an exploded view of a test body and legs from another perspective provided by some embodiments of the present disclosure.
[0032] Description of Reference Numerals
[0033] 100-test body; 101-first mounting part; 102-second mounting part; 1021-circuit board fixing column; 103-third mounting part; 1031-fixing structure; 1032-first through hole; 104-fourth mounting part; 1041-support platform; 105-second through hole; 106-mounting groove; 110-cooling part; 111-liquid inlet; 112-liquid outlet; 113-cooling chamber; 120-leg; 121-mounting boss;
[0034] 200-circuit board module; 300-power module; 400-three-phase output module; 410-terminal block; 420-three-phase output copper busbar; 430-current sensor; 500-busbar capacitor; 610-seal; 620-pressure block; 700-thermal imager. DETAILED DESCRIPTION
[0035] The specific implementation of the present disclosure is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described herein is only used to illustrate and explain the present disclosure, and is not used to limit the present disclosure.
[0036] In the present disclosure, unless otherwise specified, directional words such as "inside" and "outside" refer to the inside and outside of the outline of the corresponding component; "far" and "near" refer to the corresponding structure or the corresponding component being far away from or close to another structure or component. X in the drawings of the present disclosure represents the first direction; Y represents the second direction; and Z represents the third direction. In addition, the terms "first", "second", etc. used in the present disclosure are intended to distinguish one element from another and do not have order or importance. In addition, in the following description, when referring to the drawings, unless otherwise explained, the same figure numbers in different drawings represent the same or similar elements. The above definitions are only used to explain and illustrate the present disclosure and should not be construed as limitations on the present disclosure.
[0037] The purpose of the present disclosure is to provide a test device for a motor controller power module, which enables a thermal imager 700 to be aligned with a power module 300 installed on a first mounting portion 101, detect the temperature of the power module 300, and thereby evaluate different current output capabilities.
[0038] It should be noted that the test device for the motor controller power module disclosed in the present invention can be used to test the power module 300 of the motor controller of a new energy vehicle. The test device for the motor controller power module can also be expanded to other technical fields that may use the half-bridge power module 300, such as photovoltaic inverters, high-voltage frequency converters, etc.
[0039] In order to achieve the above purpose, Figures 1 to 6 As shown, the present disclosure provides a test device for a motor controller power module, which may include a test body 100 and a circuit board module 200: wherein the test body 100 includes a cooling portion 110, a first mounting portion 101 for mounting a power module 300 to be tested, and a second mounting portion 102 located on one side of the first direction of the first mounting portion 101, and the cooling portion 110 is used to cool the power module 300. The circuit board module 200 is mounted on the second mounting portion 102, so that the thermal imager 700 can be aligned with the power module 300 mounted on the first mounting portion 101, and detect the temperature of the power module 300.
[0040] Through the above technical solution, the test device of the motor controller power module includes a test body 100 and a circuit board module 200, wherein the test body 100 includes a cooling part 110, a first mounting part 101 and a second mounting part 102, the circuit board assembly is installed on the second mounting part 102, the first mounting part 101 is used to install the power module 300 to be tested, and the cooling part 110 is used to cool the power module 300 installed on the first mounting part 101. Because the second mounting part 102 is located on one side of the first mounting part 101 in the first direction, the circuit board module 200 installed on the second mounting part 102 will not block the power module 300 to be tested installed on the first mounting part 101, and the thermal imager 700 can be aligned with the power module 300 installed on the first mounting part 101, and detect the temperature of the power module 300, so as to evaluate different current output capabilities.
[0041] The power module 300 may be a half-bridge power module 300 for a motor controller, which may be mounted on the first mounting portion 101 of the test device. When the motor controller is working, the chip (power module 300) will generate heat, causing the temperature of the power module 300 to rise. By using the thermal imager 700 and aiming at the area, non-contact measurement of the chip temperature may be achieved. Different chip temperatures correspond to different output currents of the power module 300, and the current output capability of the motor controller may be evaluated through the device.
[0042] It should be noted that, in the test device of this embodiment, after the power module 300 to be tested is installed on the first installation part 101, the power module 300 can be directly exposed to a position where the thermal imager 700 can test. Since the corresponding temperature of the power module 300 is different under different current conditions, the current condition can be judged by detecting the temperature of the power module 300.
[0043] It is worth noting that in order to ensure that the test device can restore the actual working state of the power module 300 to be tested, the test device also includes other components of the application environment of the power module 300 (for example, components of the motor controller other than the power module 300, including but not limited to the three-phase output module 400, bus capacitor 500, filter module, etc.), which will not be elaborated here one by one.
[0044] like Figure 1 , Figure 3 and Figure 4 As shown, in some embodiments, there are multiple first mounting parts 101, and the multiple first mounting parts 101 are arranged at intervals along a second direction perpendicular to the first direction. Each first mounting part 101 can be installed with a power module 300, so as to implement testing of each power module 300.
[0045] For example, there may be three first mounting parts 101, which can fix three power modules 300 at the same time. The three first mounting parts 101 can be arranged along the second direction, so that the three power modules 300 can correspond to the thermal imager 700 in the third direction. It should be noted that the first direction, the second direction and the third direction are perpendicular to each other.
[0046] It is understandable that the three first mounting parts 101 mentioned above for fixing three power modules 300 are exemplary, and the number of first mounting parts 101 can also be designed according to the actual number of power modules 300, which will not be elaborated here.
[0047] The cooling unit 110 is used to meet the heat dissipation requirements of the power module 300. The cooling unit 110 can be constructed using any suitable structure, such as Figure 4 As shown, in some embodiments, the cooling part 110 includes a cooling chamber 113 having a liquid inlet 111 and a liquid outlet 112, and an opening is formed on one side of the cooling chamber 113 in the third direction, and the opening forms the first mounting part 101. The cooling medium (such as water) can enter the cooling chamber 113 from the liquid inlet 111 and be discharged from the liquid outlet 112 to achieve circulation, wherein the cooling chamber 113 is formed with an opening in the third direction, and the power module 300 can be sealed and installed at the opening, so that the cooling medium in the cooling chamber 113 can take away the heat of the power module 300, thereby achieving heat dissipation of the power module 300. It can be understood that the power module 300 can be installed on the first mounting part 101 in any suitable manner, including but not limited to screw connection, clamping or bonding, etc., and the power module 300 can also be pressed on the first mounting part 101 using a pressing block 620.
[0048] It should be noted that the cooling unit 110 may also be a direct cooling plate or a liquid cooling plate structure, which will not be described in detail here.
[0049] In order to achieve a sealed connection between the power component and the first mounting portion 101 (eg, the opening of the cooling chamber 113), that is, to prevent the cooling medium from overflowing from the cooling chamber 113, as shown in FIG. Figure 3 As shown, in some embodiments of the present disclosure, the test device of the motor controller power module further includes a seal 610 provided on the first mounting portion 101 for sealing the first mounting portion 101 and the power module 300. The seal 610 may be a sealing ring or a sealing strip, and the sealing ring is filled in the same direction of the power module 300 and the opening, and the gap is filled by the compression deformation of the sealing ring to achieve sealing of the cooling medium.
[0050] In some embodiments, the test device for the motor controller power module further includes a pressing block 620 detachably connected to the first mounting portion 101 for fixing the power module 300. Screw holes may be arranged on both sides of the above-mentioned opening, and when the power module 300 is placed on the first mounting portion 101, screws may be passed through the pressing block 620 and connected to the inside of the screw holes, and the power module 300 may be fixed to the first mounting portion 101 through the pressing block 620.
[0051] It should be noted that when there are multiple first mounting parts 101, multiple power modules 300 can be installed at the same time. Here, a pressing block 620 can be arranged between two adjacent first mounting parts 101, and two power modules 300 can be fixed at the same time by the pressing block 620 to reduce the number of fixing parts.
[0052] The circuit board module 200 may include a printed circuit board having a low-voltage signal interface thereon for implementing low-voltage signal communication of the entire motor controller.
[0053] The second mounting portion 102 may adopt any suitable structure to fix the circuit board module 200. Figure 4 and Figure 5 As shown, in some embodiments, the second mounting portion 102 includes a plurality of circuit board fixing columns 1021 for fixing the circuit board module 200. The circuit board module 200 can be fixed by providing a plurality of circuit board fixing columns 1021 on the test body 100 and fixing the circuit board module 200 on the circuit board fixing columns 1021. For example, a screw hole is formed on the circuit board fixing column 1021, and a screw is passed through a fixing hole on the circuit board module 200 and then connected to the screw hole of the circuit board fixing column 1021 to achieve a fixing function.
[0054] Optionally, the test body 100 also includes a third mounting part 103 and a fourth mounting part 104; the power module 300 test device also includes a three-phase output module 400 and a bus capacitor 500; the three-phase output module 400 is installed in the third mounting part 103, and the bus capacitor 500 is installed in the fourth mounting part 104.
[0055] The test device of the embodiment of the present disclosure is used to simulate various components of the motor controller. By fixing the circuit board module 200 on one side of the power module 300 in the first direction, it is convenient for the thermal imager 700 to directly test the temperature. At the same time, in order to make the working condition of the test device of the motor controller power module more consistent with the actual working condition, the test body 100 also includes a third mounting portion 103 for mounting the three-phase output module 400 and a fourth mounting portion 104 for mounting the bus capacitor 500.
[0056] like Figure 3 and Figure 4As shown, optionally, the third mounting portion 103 and the fourth mounting portion 104 are respectively located on opposite sides of the cooling portion 110 in the first direction. The third mounting portion 103 and the second mounting portion 102 are located on the same side of the cooling portion 110 in the first direction, and after installation, the circuit board module 200 is located above the three-phase output module 400, and the bus capacitor 500 is located on the other side opposite to the cooling portion 110.
[0057] The fourth mounting portion 104 can be constructed as a supporting platform 1041, and the bus capacitor 500 is fixed on the supporting platform 1041. One end of the bus capacitor 500 is used to connect to the DC input high-voltage wire harness, and the other end is connected to the power module 300. Its main function is energy storage and buffering, reducing the impact of the peak voltage / current generated by the power module 300 on external electrical equipment.
[0058] like Figure 3 As shown, in some embodiments, the first mounting portion 101, the second mounting portion 102 and the third mounting portion 103 are located on the same side of the test body 100 in the third direction; the three-phase output module 400 includes a wiring seat 410 and a three-phase output copper bar 420; the third mounting portion 103 includes a fixing structure 1031 for fixing the wiring seat 410, and the test body 100 is formed with a first through hole 1032 that penetrates along the third direction, so that the three-phase output copper bar 420 passes through the first through hole 1032 from one side of the third direction of the test body 100 and is connected to the wiring seat 410 on the other side. The fixing structure 1031 is used to connect and fix the wiring seat 410, and one end of the three-phase output copper bar 420 passes through the test body 100 through the first through hole 1032 and is connected to the wiring seat 410, thereby fixing the three-phase output copper bar 420. Through the above arrangement, a stable connection of the three-phase output copper bar 420 can be achieved.
[0059] In order to detect the magnitude of the output current, optionally, the three-phase output copper busbar 420 is provided with a current sensor 430, which is located on the side of the test body 100 that is away from the terminal block 410 in the third direction, and the current sensor 430 is connected to the circuit board module 200 through a wiring harness; the test body 100 is formed with a second through hole 105 for the wiring harness to pass through.
[0060] The main function of the terminal block 410 is to fix the three-phase output copper busbar 420. The terminal block 410 can be fixed to the third mounting portion 103 of the test body 100 through the fixing structure 1031. A current sensor 430 is installed on the three-phase output copper busbar 420 to detect the value of the output current. The signal line of the current sensor 430 passes through the second through hole 105 through the current sensor 430 wiring harness and is connected to the circuit board module 200 (printed circuit board) to realize the transmission and control of the current output detection signal.
[0061] like Figures 4 to 6 As shown, optionally, the test device for the motor controller power module further includes a leg 120 connected to the side of the test body 100 away from the first mounting portion 101. The number of the legs 120 can be multiple, for example, three, four or more, to better support the test body 100. The main function of the legs 120 is to provide support, such as Figure 5 and Figure 6 As shown, in order to reduce the processing cost of the entire test tooling, the leg 120 is a detachable structure, which has a mounting boss 121 for mounting the leg. The mounting boss 121 can be a threaded column structure, which is connected to the mounting groove 106 on the test body 100 by threaded engagement; the mounting boss 121 can also be a non-threaded column structure, which is connected to the mounting groove 106 by interference crimping; the mounting boss 121 can also be a non-threaded column structure, which is connected to the mounting groove 106 by coating glue or other adhesives on the surface.
[0062] The test device for the motor controller power module of the disclosed embodiment arranges the various components (including the circuit board module 200, the three-phase output module 400 and the bus capacitor 500, etc.) in a reasonable manner, is compact in size and low in cost, and is convenient for testing the current output capacity of the power module 300 (for example, the half-bridge power module 300).
[0063] The testing device for the motor controller power module includes a testing body 100 and a circuit board module 200, wherein the testing body 100 includes a cooling portion 110, a first mounting portion 101 and a second mounting portion 102, the circuit board assembly is mounted on the second mounting portion 102, the first mounting portion 101 is used to mount the power module 300 to be tested, and the cooling portion 110 is used to cool the power module 300 mounted on the first mounting portion 101. Since the second mounting portion 102 is located on one side of the first mounting portion 101 in the first direction, the circuit board module 200 mounted on the second mounting portion 102 will not block the power module 300 to be tested mounted on the first mounting portion 101, and the thermal imager 700 can be aligned with the power module 300 mounted on the first mounting portion 101, and detect the temperature of the power module 300, so as to evaluate different current output capabilities.
[0064] The preferred embodiments of the present disclosure are described in detail above in conjunction with the accompanying drawings; however, the present disclosure is not limited to the specific details in the above embodiments. Within the technical concept of the present disclosure, a variety of simple modifications can be made to the technical solution of the present disclosure, and these simple modifications all fall within the protection scope of the present disclosure.
[0065] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present disclosure will not further describe various possible combinations.
[0066] In addition, various embodiments of the present disclosure may be arbitrarily combined, and as long as they do not violate the concept of the present disclosure, they should also be regarded as the contents disclosed by the present disclosure.
Claims
1. A test device for a motor controller power module, characterized in that: include: A test body, comprising a cooling portion, a first mounting portion for mounting a power module to be tested, and a second mounting portion located on one side in a first direction of the first mounting portion, wherein the cooling portion is used for cooling the power module; as well as The circuit board module is mounted on the second mounting portion so that the thermal imager can be aligned with the power module mounted on the first mounting portion and detect the temperature of the power module.
2. The testing device for the motor controller power module according to claim 1, characterized in that: There are a plurality of the first mounting portions, and the plurality of the first mounting portions are arranged at intervals along a second direction perpendicular to the first direction.
3. The testing device for the motor controller power module according to claim 1, characterized in that: The cooling portion includes a cooling chamber having a liquid inlet and a liquid outlet. An opening is formed on one side of the cooling chamber in the third direction, and the opening forms a first mounting portion.
4. The testing device for the motor controller power module according to claim 3, characterized in that: The testing device for the motor controller power module further comprises a sealing member provided on the first mounting portion for sealing the first mounting portion and the power module; and / or The testing device for the motor controller power module also includes a pressing block detachably connected to the first mounting portion and used to fix the power module.
5. The testing device for the motor controller power module according to claim 1, characterized in that: The second mounting portion includes a plurality of circuit board fixing columns for fixing the circuit board module.
6. The testing device for the motor controller power module according to claim 1, characterized in that: The test body also includes a third mounting portion and a fourth mounting portion; The power module testing device also includes a three-phase output module and a bus capacitor; The three-phase output module is installed on the third installation portion, and the bus capacitor is installed on the fourth installation portion.
7. The testing device for the motor controller power module according to claim 6, characterized in that: The third mounting portion and the fourth mounting portion are respectively located at two opposite sides of the cooling portion in the first direction.
8. The testing device for the motor controller power module according to claim 7, characterized in that: The first mounting portion, the second mounting portion and the third mounting portion are located on the same side of the test body in the third direction; The three-phase output module includes a wiring socket and a three-phase output copper busbar; The third mounting portion includes a fixing structure for fixing the terminal block, and the test body is formed with a first through hole penetrating along the third direction, so that the three-phase output copper busbar passes through the first through hole from one side of the third direction of the test body and is connected to the terminal block on the other side.
9. The testing device for the motor controller power module according to claim 8, characterized in that: The three-phase output copper busbar is provided with a current sensor, the current sensor is located on a side of the test body in the third direction away from the wiring seat, and the current sensor is connected to the circuit board module through a wiring harness; The test body is formed with a second through hole through which the wire harness passes.
10. The motor controller power module testing device according to any one of claims 1 to 9, characterized in that: The testing device for the motor controller power module further comprises a leg connected to the side of the testing body facing away from the first mounting portion.