Device for testing electrical component

Abstract

An apparatus for testing an electrical component, comprising: a housing at least partially enclosed to form an interior space; the cover body can be detachably mounted on the shell, and the cover body and the shell are matched to seal the internal space; an insulator disposed in the internal space and fixed to the housing; the at least one first interface is arranged on the shell, and the test wire is led into the internal space through the first interface; at least one second interface provided on the housing, via which a busbar of the electrical component is introduced into the interior space; the device further comprises at least one conductive part, the conductive part is arranged in the inner space and fixed to the insulating part, a first assembling hole and a second assembling hole are formed in the conductive part, the test wire is electrically connected to the conductive part through the first assembling hole, and the busbar is electrically connected to the conductive part through the second assembling hole.

Description

Technical Field

[0001] The utility model relates to a device for testing electrical components, and more particularly, to a device for testing electrical components with higher reliability and easier assembly. Background Art

[0002] For some electrical components, tests may be required before leaving the factory. During the test, the current generated by the electrical component needs to be output, so the test wire needs to be electrically connected to the electrical component. However, in the prior art, the busbar of the electrical component to be tested may have a complex geometric shape, making it inconvenient to directly electrically connect the test wire to the busbar of the electrical component to be tested.

[0003] Therefore, it is desirable to propose a device for testing electrical components to improve the defects in the above prior art. Summary of the Utility Model

[0004] According to one aspect of the utility model, a device for testing electrical components is provided, including: a housing that at least partially encloses to form an internal space; a cover that can be detachably mounted to the housing, and the cover cooperates with the housing to enclose the internal space; an insulating member disposed in the internal space and fixed to the housing; at least one first interface disposed on the housing, and the test wire is introduced into the internal space through the first interface; at least one second interface disposed on the housing, and the busbar of the electrical component is introduced into the internal space through the second interface; wherein the device further includes at least one conductive member disposed in the internal space and fixed to the insulating member, and the conductive member is provided with a first assembly hole and a second assembly hole, the test wire is electrically connected to the conductive member through the first assembly hole, and the busbar is electrically connected to the conductive member through the second assembly hole.

[0005] According to this solution, the test wire is connected to the busbar of the electrical component to be tested through the conductive member, and the geometric shape of the conductive member can be flexibly designed according to the specific geometric shape of the busbar, so that the test wire can be conveniently and reliably electrically connected to the busbar to output the current of the electrical component to be tested during the test, thereby testing the performance of the electrical component.

[0006] In some solutions, the device for testing electrical components may include three conductive members arranged at intervals from each other, and the housing is provided with three corresponding first interfaces and three corresponding second interfaces. The three phase lines of the three-phase test wire are respectively introduced into the internal space through the corresponding first interfaces, and the three busbars of the electrical component are respectively introduced into the internal space through the corresponding second interfaces.

[0007] In some solutions, the three electrically conductive members arranged at intervals from each other can be a first electrically conductive member, a second electrically conductive member, and a third electrically conductive member respectively. The second electrically conductive member is arranged between the first electrically conductive member and the third electrically conductive member. The first electrically conductive member extends in a straight line and is aligned with the corresponding first interface. Each of the second electrically conductive member and the third electrically conductive member includes a main body portion and an extension portion. The main body portion is parallel to the extension direction of the first electrically conductive member, and the extension portion forms an angle with the corresponding main body portion.

[0008] According to this solution, through the extension portion, the current transmission line is not limited to the straight line where the test line is located, but can be flexibly designed according to the specific geometry of the bus bar, avoiding the risk that the test line may be damaged due to bending of the test line.

[0009] In some solutions, for the second electrically conductive member and / or the third electrically conductive member, the distance between the extension portions is less than the distance between the main body portions. The first assembly hole is provided on the main body portion, and the second assembly hole is provided on the extension portion.

[0010] According to this solution, for the case where the distance between the bus bars is small, if the test line is directly electrically connected to the bus bar, it is very likely to cause a short circuit between different phase lines at the connection point. For this reason, the test line is electrically connected to the electrically conductive member on the main body portion with a larger distance, avoiding the above-mentioned short circuit risk between different phase lines.

[0011] In some solutions, the housing can include a side surface and an upper surface. The first interface is provided on the side surface, and the second interface is provided on the upper surface.

[0012] In some solutions, the device for testing electrical components can further include a base and a column. The base extends parallel to the upper surface, the column extends perpendicular to the upper surface and is fixed to the base, the housing is fixed to the base, and the electrical component is fixed to the column.

[0013] In some solutions, the device for testing electrical components can further include a cooling channel. The coolant flows through the cooling channel to transfer heat from the inside of the device to the outside of the device.

[0014] In some solutions, the first interface and / or the second interface can be covered with a sealing ring.

[0015] In some solutions, the first interface can be a cable gland.

[0016] According to this solution, by using a cable gland, the test line can be locked to prevent axial displacement and radial rotation, and further ensure the sealing performance.

[0017] In some solutions, the electrically conductive member can be made of a material containing copper.

[0018] In some solutions, the electrical component can be an inverter. Description of the Drawings

[0019] Figure 1 A schematic diagram of a device for testing electrical components according to an embodiment of the present utility model is shown;

[0020] Figure 2 A schematic diagram of a test configuration according to an embodiment of the present utility model is shown.

[0021] Reference Numerals

[0022] 10 Test Lead

[0023] 12 Nose

[0024] 20 Inverter

[0025] 22 Bus Bar

[0026] 100 Test Device

[0027] 110 Housing

[0028] 112 Side Surface

[0029] 114 Upper Surface

[0030] 120 Insulator

[0031] 130 First Interface

[0032] 140 Second Interface

[0033] 152 First Conductive Member

[0034] 154 Second Conductive Member

[0035] 156 Third Conductive Member

[0036] 157 First Assembly Hole

[0037] 158 Second Assembly Hole

[0038] 162 Main Body Portion

[0039] 164 Extension Portion

[0040] 170 Base

[0041] 180 Column

[0042] 190 Cooling Channel Detailed Description of the Invention

[0043] In order to make the objectives, solutions and advantages of the technical solution of the present utility model clearer, the technical solution of the embodiments of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings of the specific embodiments of the present utility model. Unless otherwise specified, the terms used herein have the ordinary meanings in the art. The same reference numerals in the drawings represent the same components.

[0044] Figure 1 A schematic diagram of a device 100 for testing electrical components according to an embodiment of the present utility model is shown, where the test line 10 and the electrical component to be tested have not been connected to the device 100. Figure 2 A schematic diagram of the test line 10 and the electrical component to be tested connected to the device 100 is shown. The electrical component to be tested may be, for example, an inverter 20, and the inverter 20 is used to convert the input direct current into alternating current and output the alternating current. It should be understood that the present utility model is not intended to limit the specific type of the electrical component to be tested, and the electrical component to be tested may also be any other suitable electrical component such as a transformer or a rectifier. The test device 100 includes a housing 110, an insulating member 120, a first interface 130, a second interface 140, and a cover (the cover is removed in the drawings for conveniently showing the internal structure of the test device 100). The cover is detachably mounted to the housing 110, and the cover and the housing 110 cooperate to form a sealed space. The insulating member 120 is disposed in the internal space and fixed to the housing 110. The insulating member 120 prevents the housing 110 from being in electrical contact with the test line 10, thereby ensuring that the housing 110 is not energized to ensure the safety of the test personnel. The test line 10 and the bus bar 22 of the inverter 20 are respectively introduced into the internal space of the test device 100 via the first interface 130 and the second interface 140, and the test line 10 and the bus bar 22 of the inverter 20 are electrically connected in the internal space to output the alternating current generated by the inverter 20, thereby testing the electrical performance of the inverter 20. Usually, the inverter 20 converts the input direct current into three-phase alternating current, so three first interfaces 130 are provided on the housing 110 to respectively introduce the three phase lines of the test line 10 into the internal space. It should be understood that although the present utility model is described below by taking three-phase alternating current as an example, the present utility model is not intended to limit the number of wires connected to the test device 100, nor the number of the corresponding first interfaces 130, second interfaces 140, bus bars 22 and conductive members.

[0045] In the prior art, the test line 10 is directly electrically connected to the bus bar 22 of the inverter 20. For a bus bar 22 with a relatively special geometry, the above arrangement has some defects. First, the test line 10 may need to be bent to be electrically connected to the bus bar 22. However, the test line 10 may not be easily bent or may be easily damaged due to bending. Second, the distance between multiple bus bars 22 may be relatively close, such that the electrical connector for electrically connecting the test line 10 and the corresponding bus bar 22 may undesirably come into contact with two adjacent bus bars 22 simultaneously, thereby electrically connecting the two adjacent bus bars 22 and further causing a short circuit between different phase lines of the inverter 20.

[0046] To improve the defects of the above prior art, the test device 100 according to an embodiment of the present invention further includes a first conductive member 152, a second conductive member 154, and a third conductive member 156 corresponding to three phase lines respectively (preferably, the conductive members 152, 154, 156 may be made of a material containing copper). The first conductive member 152, the second conductive member 154, and the third conductive member 156 are spaced apart from each other and fixed to the insulating member 120. Each of the first conductive member 152, the second conductive member 154, and the third conductive member 156 is provided with a first assembly hole 157 and a second assembly hole 158. The test line 10 is electrically connected to the corresponding conductive member via the corresponding first assembly hole 157 (for example, fixed by a screw), and the bus bar 22 is electrically connected to the corresponding conductive member via the second assembly hole 158 (for example, fixed by a screw). By connecting the test line 10 to the bus bar 22 of the inverter 20 through the conductive members 152, 154, 156, the geometry of the conductive members 152, 154, 156 can be flexibly designed according to the specific geometry of the bus bar 22, such that the test line 10 can be conveniently (i.e., the test line 10 does not need to be bent) and reliably (i.e., no short circuit occurs between different phase lines) electrically connected to the bus bar 22 to output the alternating current generated by the inverter 20 during testing.

[0047] Preferably, the second conductive member 154 is arranged between the first conductive member 152 and the third conductive member 156. The first conductive member 152 extends linearly and is aligned with the corresponding first interface 130. Each of the second conductive member 154 and the third conductive member 156 includes a main body portion 162 and an extension portion 164. The main body portion 162 is parallel to the extension direction of the first conductive member 152, and the extension portion 164 forms an angle with the corresponding main body portion 162. Through the extension portion 164, the current transmission line is not limited to the straight line where the test line 10 is located, but can be flexibly designed according to the specific geometry of the bus bar 22, avoiding the risk that the test line 10 may be damaged due to bending.

[0048] Preferably, for the second conductive member 154 and / or the third conductive member 156, the distance between the extension portions 164 is less than the distance between the main body portions 162 (i.e., the gap at the extension portions 164 is narrower than the gap at the main body portions 162). The first assembly hole 157 is provided on the main body portion 162, and the second assembly hole 158 is provided on the extension portion 164. For the case where the distance between the busbars 22 is small, if the test line 10 is directly electrically connected to the busbars 22, since the electrical connector may be in electrical contact with the busbars 22 of different phase lines simultaneously, a short circuit between different phase lines may occur at the connection. Therefore, the test line 10 is electrically connected to the conductive members 154, 156 on the main body portion 162 with a larger distance, avoiding the above-mentioned risk of short circuit between different phase lines.

[0049] Optionally, the housing 110 may include a side surface 112 and an upper surface 114. The first interface 130 is provided on the side surface 112, and the second interface 140 is provided on the upper surface 140. Preferably, the test device 100 may further include a base 170 and a column 180. The base 170 extends parallel to the upper surface 114 of the housing 110, the column 180 extends perpendicular to the upper surface 114 of the housing 110 and is fixed to the base 170, the housing 110 is fixed to the base 170, and the inverter 20 is fixed to the column 180.

[0050] Preferably, the test device 100 may further include a cooling channel 190. The coolant flows through the cooling channel 190 to transfer heat from the inside of the test device 100 to the outside of the test device 100, thereby preventing the test device 100 from overheating during the test.

[0051] Preferably, the first interface 130 and / or the second interface 140 may be covered with a sealing ring, so that the internal space of the test device 100 is isolated from the outside to prevent foreign objects from entering the internal space of the test device 100 and causing an undesirable impact on the test results. In addition, the first interface 130 may be a gland. By using a gland, the test line 10 can be locked to prevent axial displacement and radial rotation, and further ensure the sealing performance.

[0052] In this text, multiple exemplary embodiments of the present invention have been described in detail with reference to the preferred embodiments. However, those skilled in the art can understand that without departing from the concept of the present invention, various modifications and changes can be made to the above specific embodiments, and various technical features and structures proposed by the present invention can also be combined without exceeding the protection scope of the present invention. The protection scope of the present invention is determined by the appended claims.

Claims

1. A device for testing electrical components, characterized in that include: a housing at least partially enclosing to form an interior space; A cover body, which can be detachably mounted on the shell, and the cover body cooperates with the shell to close the internal space; an insulating member disposed in the internal space and fixed to the housing; At least one first interface, disposed on the housing, through which a test line is introduced into the internal space; at least one second interface, disposed on the housing, through which the busbar of the electrical component is introduced into the inner space; The device further includes at least one conductive member, which is arranged in the internal space and fixed to the insulating member, and is provided with a first assembly hole and a second assembly hole. The test line is electrically connected to the conductive member via the first assembly hole, and the bus is electrically connected to the conductive member via the second assembly hole.

2. The device for testing electrical components according to claim 1, characterized in that It comprises three conductive parts which are arranged spaced apart from each other, and the shell is provided with three corresponding first interfaces and three corresponding second interfaces. The three phase lines of the three-phase test line are respectively introduced into the internal space via the corresponding first interfaces, and the three buses of the electrical components are respectively introduced into the internal space via the corresponding second interfaces.

3. The device for testing electrical components according to claim 2, characterized in that: The three conductive members arranged spaced apart from each other are a first conductive member, a second conductive member and a third conductive member, the second conductive member is arranged between the first conductive member and the third conductive member, the first conductive member extends in a straight line and is aligned with the corresponding first interface, and each of the second conductive member and the third conductive member includes a main body and an extension portion, the main body portion is parallel to the extension direction of the first conductive member, and the extension portion forms an angle with the corresponding main body portion.

4. The device for testing electrical components according to claim 3, characterized in that: For the second conductive member and / or the third conductive member, the distance between the extension parts is smaller than the distance between the main body parts, the first assembly hole is arranged on the main body part, and the second assembly hole is arranged on the extension part.

5. The device for testing electrical components according to claim 1, characterized in that: The housing includes a side surface and an upper surface, the first interface is arranged on the side surface, and the second interface is arranged on the upper surface.

6. The device for testing electrical components according to claim 5, characterized in that The invention also includes a base and a column, wherein the base extends parallel to the upper surface, the column extends perpendicular to the upper surface and is fixed to the base, the housing is fixed to the base, and the electrical component is fixed to the column.

7. The device for testing electrical components according to claim 1, characterized in that: Also included is a cooling channel through which a coolant flows to transfer heat from the interior of the device to the exterior of the device.

8. The device for testing electrical components according to claim 1, characterized in that: The first interface and / or the second interface is covered with a sealing ring.

9. The device for testing electrical components according to claim 8, characterized in that The first interface is a cable gland.

10. The device for testing electrical components according to claim 1, characterized in that The conductive member is made of a material including copper.

11. The device for testing electrical components according to claim 1, characterized in that The electrical component is an inverter.

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