A withstand voltage test switching assembly, electronic device and withstand voltage test switching method

Abstract

The present disclosure relates to a voltage withstanding test switching assembly, an electronic device and a voltage withstanding test switching method. The voltage withstanding test switching assembly comprises: a printed circuit board; an insulating through hole on the printed circuit board; a first conductive part; located on a first side of the printed circuit board and arranged around the insulating through hole; the first conductive part is used for electrically connecting with a grounding end of an electrostatic protection circuit; a second conductive part; located on a second side of the printed circuit board and arranged around the insulating through hole; the second conductive part is used for electrically connecting with a grounding end of a voltage withstanding test circuit; the first side and the second side are opposite sides of the printed circuit board; a first connecting part; the first connecting part conducts a passage between the first conductive part and the second conductive part through the insulating through hole in a detachable manner; and a second connecting part; the second connecting part disconnects the passage between the first conductive part and the second conductive part in a detachable manner. Through the technical solution of the present disclosure, the problem that the grounding end of the electrostatic protection circuit and the grounding end of the voltage withstanding test circuit cannot be completely disconnected is solved.

Description

Technical Field

[0001] This disclosure relates to the field of electronic equipment technology, and in particular to a withstand voltage test switching component, electronic equipment, and withstand voltage test switching method. Background Technology

[0002] In the design of electronic devices, electrostatic discharge (ESD) protection circuits are generally required. In the event of transient overvoltage conditions such as lightning strikes, these circuits discharge static electricity, preventing the electronic device from being damaged by high voltage. Simultaneously, the design of electronic devices also requires withstand voltage testing circuits to detect whether the electronic device has broken down under high voltage and to check the adequacy of insulation distances within the device. However, if the voltage applied to the electronic device during withstand voltage testing is too high, the ESD protection circuit can easily break down, rendering it ineffective. Therefore, the grounding loop of the ESD protection circuit must be disconnected during withstand voltage testing.

[0003] In related technologies, a scheme that connects the grounding loop of the withstand voltage test circuit and the grounding loop of the electrostatic discharge (ESD) protection circuit to the same network on the printed circuit board and grounds them through the same screw results in the grounding terminals of the withstand voltage test circuit and the ESD protection circuit not being completely disconnected. This prevents the grounding terminal of the withstand voltage test circuit from being grounded independently, necessitating consideration of the ESD protection circuit's withstand voltage rating, significantly increasing its cost. Furthermore, using a jumper cap to short-circuit the connector, and thus the grounding terminals of the withstand voltage test circuit and the ESD protection circuit, leads to excessive current carrying capacity through the connector. Summary of the Invention

[0004] To address the aforementioned technical problems, this disclosure provides a withstand voltage test switching component, an electronic device, and a withstand voltage test switching method.

[0005] In a first aspect, embodiments of this disclosure provide a withstand voltage test switching component, including: a printed circuit board; the printed circuit board is provided with insulating through-holes;

[0006] A first conductive portion is located on a first side of the printed circuit board and is disposed around the insulating through-hole; the first conductive portion is used to electrically connect to the ground terminal of the electrostatic protection circuit.

[0007] A second conductive portion is located on the second side of the printed circuit board and is disposed around the insulating through-hole; the second conductive portion is used for electrical connection with the ground terminal of the withstand voltage test circuit; the first side and the second side are opposite sides of the printed circuit board;

[0008] A first connecting portion; the first connecting portion detachably connects the first conductive portion and the second conductive portion through the insulating through hole;

[0009] The second connecting part detachably disconnects the passage between the first conductive part and the second conductive part.

[0010] Optionally, the first connecting portion includes a conductive element and a fixing element;

[0011] The conductive component is fastened to the fixing component through the insulating through hole, and the conductive component is electrically connected to the first conductive part, while the fixing component is electrically connected to the second conductive part.

[0012] Optionally, the first connecting portion further includes a first conductive pad and / or a second conductive pad; the first conductive pad is detachably disposed between the first conductive portion and the conductive member; the second conductive pad is detachably disposed between the second conductive portion and the fixing member.

[0013] Optionally, the second connection portion includes an insulating gasket; the insulating gasket is detachably disposed between the first conductive portion and the conductive element.

[0014] Optionally, the second connecting portion includes an insulating member; the insulating member is fastened to the fixing member through the insulating through hole.

[0015] Optionally, the withstand voltage test switching assembly also includes a housing, which is grounded; the fixing member is electrically connected to the housing.

[0016] Optionally, the withstand voltage test switching assembly further includes a heat sink; the fixing member is connected to the housing via the heat sink.

[0017] Optionally, the conductive element includes a conductive bolt, and the fixing element includes a conductive stud.

[0018] Optionally, the insulating element includes an insulating bolt.

[0019] Optionally, the distance between the edge of the first conductive part adjacent to the insulating through hole and the insulating through hole is greater than the distance between the edge of the second conductive part adjacent to the insulating through hole and the insulating through hole.

[0020] Optionally, the first conductive portion and / or the second conductive portion may include an annular copper cladding on the printed circuit board.

[0021] Secondly, embodiments of this disclosure also provide an electronic device, including the withstand voltage test switching component as described in the first aspect.

[0022] Thirdly, this disclosure also provides a withstand voltage test switching method, wherein the withstand voltage test switching method employs the withstand voltage test switching component as described in the first aspect, and the withstand voltage test switching method includes:

[0023] The second connecting part is set to disconnect the passage between the first conductive part and the second conductive part, and a withstand voltage test is performed;

[0024] After the withstand voltage test is completed, the first connecting part is assembled into the insulating through hole to make the passage between the first conductive part and the second conductive part conductive.

[0025] The technical solution provided in this disclosure has the following advantages compared with the prior art:

[0026] The withstand voltage test switching component provided in this embodiment includes: a printed circuit board; an insulating through-hole provided on the printed circuit board; a first conductive portion; located on a first side of the printed circuit board and disposed around the insulating through-hole; the first conductive portion is used for electrical connection with the grounding terminal of an electrostatic protection circuit; a second conductive portion; located on a second side of the printed circuit board and disposed around the insulating through-hole; the second conductive portion is used for electrical connection with the grounding terminal of the withstand voltage test circuit; the first side and the second side are opposite sides of the printed circuit board; a first connecting portion; the first connecting portion detachably conducts a path between the first conductive portion and the second conductive portion through the insulating through-hole; a second connecting portion; the second connecting portion detachably disconnects the path between the first conductive portion and the second conductive portion. Therefore, during withstand voltage testing, the second connecting portion disconnects the path between the first conductive portion and the second conductive portion, so that the grounding terminal of the electrostatic protection circuit and the grounding terminal of the withstand voltage test circuit are no longer electrically connected, only the grounding terminal of the withstand voltage test circuit is grounded, and the grounding terminal of the electrostatic protection circuit is no longer grounded. While the withstand voltage test circuit can perform withstand voltage tests, the grounding terminal of the electrostatic discharge (ESD) protection circuit is no longer grounded, thus preventing the ESD protection circuit from being broken down by high voltage, improving its safety, and eliminating the need for high-voltage components, reducing its cost. After the withstand voltage test, the first connection part connects the first conductive part and the second conductive part, ensuring that both the grounding terminals of the ESD protection circuit and the withstand voltage test circuit are grounded. This means that by connecting the grounding loops of the withstand voltage test circuit and the ESD protection circuit to the same network on the printed circuit board, for example through the same conductive screw, the ESD protection circuit can function normally, providing ESD protection for electronic equipment. Furthermore, ESD protection and withstand voltage testing of electronic equipment can be achieved without using larger components, saving printed circuit board layout space. Attached Figure Description

[0027] The accompanying drawings, which are incorporated in and form a part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure.

[0028] To more clearly illustrate the technical solutions in the embodiments of this disclosure or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 A schematic diagram of the circuit principle of a withstand voltage test switching component provided in an embodiment of this disclosure;

[0030] Figure 2 This is a top view of a withstand voltage test switching component provided in an embodiment of the present disclosure;

[0031] Figure 3 for Figure 2 A magnified view of a portion of region A in the middle;

[0032] Figure 4 This is a bottom view of a withstand voltage test switching component provided in an embodiment of the present disclosure;

[0033] Figure 5 This is a magnified view of a portion of region B;

[0034] Figure 6 This is a schematic cross-sectional view of a withstand voltage test switching component provided in an embodiment of the present disclosure;

[0035] Figure 7 A schematic cross-sectional view of another withstand voltage test switching component provided in an embodiment of this disclosure;

[0036] Figure 8 A top view of another withstand voltage test switching component provided in an embodiment of this disclosure;

[0037] Figure 9 This is a schematic diagram of a conductive component being assembled into an insulating through hole, according to an embodiment of this disclosure.

[0038] Figure 10 A bottom view of another withstand voltage test switching component provided in an embodiment of this disclosure;

[0039] Figure 11 for Figure 10 A magnified view of a portion of region C in the middle;

[0040] Figure 12 A schematic cross-sectional view of another withstand voltage test switching component provided in an embodiment of this disclosure;

[0041] Figure 13 A schematic cross-sectional view of another withstand voltage test switching component provided in an embodiment of this disclosure;

[0042] Figure 14 A schematic cross-sectional view of another withstand voltage test switching component provided in an embodiment of this disclosure;

[0043] Figure 15 A schematic cross-sectional view of another withstand voltage test switching component provided in an embodiment of this disclosure;

[0044] Figure 16 This is a flowchart illustrating a voltage withstand test switching method provided in an embodiment of the present disclosure.

[0045] Among them, 1. Printed circuit board; 21. First conductive part; 22. Second conductive part; 31. First connecting part; 32. Second connecting part; 311. Conductive component; 312. Fixing component; 313. First conductive pad; 314. Second conductive pad; 321. Insulating pad; 322. Insulating component; 4. Housing; 5. Heat sink; 6. Electrostatic protection circuit; 7. Withstand voltage test circuit; H. Insulating through hole. Detailed Implementation

[0046] To better understand the above-mentioned objectives, features, and advantages of this disclosure, the solutions disclosed herein will be further described below. It should be noted that, unless otherwise specified, the embodiments and features described herein can be combined with each other.

[0047] Numerous specific details are set forth in the following description in order to provide a full understanding of this disclosure, but this disclosure may also be implemented in other ways different from those described herein; obviously, the embodiments in the specification are only some, and not all, of the embodiments of this disclosure.

[0048] In recent years, due to the development of the energy storage industry and the country's vigorous promotion of a low-carbon economy, more and more companies have entered the energy storage sector, and various energy storage devices have emerged for different application scenarios. For outdoor products, we not only need to consider product reliability but also their ability to withstand various harsh weather conditions. In stormy weather, the product's waterproof and lightning protection performance is particularly important. For the product's electrostatic discharge (ESD) protection circuit, it should have a sufficiently fast response speed when encountering transient overvoltage conditions such as lightning strikes, and be able to limit voltage and bypass current. Furthermore, the ESD protection circuit should not affect normal use and should not activate at the equipment's highest operating voltage. Even after multiple protection cycles, derating should still meet current requirements. In general product designs, there are lightning protection circuits as ESD protection circuits, and XY capacitor filter circuits as withstand voltage testing circuits.

[0049] Simultaneously, during product design, safety distances between high and low voltage levels must be considered. The required safety distances differ for different voltage levels and altitudes. Withstand voltage testing can be conducted to verify whether the safety distances meet the requirements. Withstand voltage testing involves applying a high voltage to the product, typically greater than 1000V. This voltage can be AC ​​or DC, depending on the application scenario, and the application time also varies.

[0050] The withstand voltage test is primarily used to detect whether equipment has broken down under high voltage and to verify the adequacy of insulation distances within the equipment. A key parameter for detecting breakdown is leakage current, which typically flows through a Y-capacitor. One function of the Y-capacitor is to filter common-mode voltage. However, since one end of the Y-capacitor is connected to ground, there is a leakage current to ground. When high voltage is applied to the equipment, the leakage current changes accordingly. During breakdown, the leakage current increases rapidly. The magnitude of the leakage current is used to determine whether the electronic equipment has broken down under high voltage. If the voltage applied to the electronic equipment during the withstand voltage test is too high, the electrostatic discharge (ESD) protection circuit can easily break down, rendering the withstand voltage test ineffective. Therefore, the grounding loop of the ESD protection circuit must be disconnected during the withstand voltage test.

[0051] In related technologies, one approach is to simultaneously ground the grounding terminals of both the withstand voltage test circuit and the electrostatic discharge (ESD) protection circuit using screws, making it impossible to keep only one grounded. If both are grounded during the withstand voltage test, an ESD protection circuit with a higher breakdown voltage must be selected to prevent it from breaking down during the test.

[0052] Another approach is to connect the grounding terminal of the withstand voltage test circuit and the grounding terminal of the electrostatic discharge (ESD) protection circuit using an additional terminal. However, in the event of a lightning surge, the instantaneous current is large, which can easily burn out the connectors electrically connected to the grounding terminals of the withstand voltage test circuit and the ESD protection circuit. Furthermore, the required connectors need to withstand a large current after the ESD protection circuit is damaged, resulting in a large connector size and space consumption.

[0053] To address the aforementioned issues, this disclosure provides a withstand voltage test switching component. Figure 1 This is a schematic diagram of the circuit principle of a withstand voltage test switching component provided in an embodiment of the present disclosure.

[0054] Figure 2 This is a top view of a withstand voltage test switching component provided in an embodiment of the present disclosure. Figure 3 for Figure 2 A magnified view of a portion of region A in the middle. Figure 4 This is a bottom view of a withstand voltage test switching component provided in an embodiment of the present disclosure. Figure 5 This is a magnified view of a portion of region B. Figure 6 This is a schematic cross-sectional view of a withstand voltage test switching component provided in an embodiment of this disclosure. Figure 7 This is a schematic cross-sectional view of another withstand voltage test switching component provided in an embodiment of this disclosure. (Combined with...) Figures 1 to 7 The withstand voltage test switching assembly includes: a printed circuit board 1; an insulating through-hole H is provided on the printed circuit board 1; a first conductive part 21; located on a first side of the printed circuit board 1 and arranged around the insulating through-hole H; the first conductive part 21 is used for electrical connection with the ground terminal of the electrostatic protection circuit 6; a second conductive part 22; located on a second side of the printed circuit board 1 and arranged around the insulating through-hole H; the second conductive part 22 is used for electrical connection with the ground terminal of the withstand voltage test circuit 7; the first side and the second side are opposite sides of the printed circuit board 1; a first connecting part 31; the first connecting part 31 detachably conducts the passage between the first conductive part 21 and the second conductive part 22 through the insulating through-hole H; and a second connecting part 32; the second connecting part 32 detachably disconnects the passage between the first conductive part 21 and the second conductive part 22.

[0055] It should be noted that, in the embodiments of this disclosure, an insulating via refers to a via that does not have copper plating inside and is not electrically connected to any circuit layer in the printed circuit board 1.

[0056] Figure 1 The electrostatic discharge (ESD) protection circuit exemplarily shown may include, for example, a gas discharge tube 61, varistor R1, varistor R2, and varistor R3. The L terminal is the live wire of the power input, and the N terminal is the neutral wire of the power input. The discharge tube Q1 is grounded. The first ends of varistor R1 and R2 are electrically connected to the N terminal, the first ends of varistor R3 and R2 are electrically connected to the L terminal, and the second ends of varistor R1 and R3 are electrically connected to the gas discharge tube 61. Varistors R1, R2, and R3 absorb surges and transient voltages generated by ESD through their nonlinear characteristics, thereby protecting the circuit from ESD damage. When the ESD voltage reaches a certain level, the gas in the gas discharge tube 61 ionizes, forming a conductive channel, thereby dissipating the ESD. It should be noted that the ESD protection circuit 6 may also include other components, and this embodiment does not limit this.

[0057] Figure 1 The diagram also exemplarily illustrates a withstand voltage test circuit 7, which may include, for example, a Y capacitor, a type of safety capacitor, typically appearing in pairs. Figure 1The diagram shows two Y-capacitors, C1 and C2, connected in series between the L and N terminals. A key parameter for detecting breakdown during withstand voltage testing is the leakage current, which typically flows through the Y-capacitors. One function of the Y-capacitors is to filter common-mode voltage. It should be noted that the withstand voltage test circuit 7 may also include other components, as long as they meet the withstand voltage test requirements; this embodiment does not limit this.

[0058] Reference Figures 2 to 5 The printed circuit board 1 (PCB) has an insulating via H. The PCB generally consists of multiple layers, and the insulating via H can penetrate the top and bottom layers of the PCB. The first conductive part 21 and the second conductive part 22 are both arranged around the insulating via H, and the first conductive part 21 and the second conductive part 22 are located on opposite sides of the PCB 1. Figure 2 The first conductive part 21 is provided, by way of example, on the top layer of the printed circuit board 1. Figure 2 Region D in the diagram could be, for example, the location where copper is laid in printed circuit board 1. Figure 3 In this embodiment, the second conductive portion 22 is exemplarily located on the bottom layer of the printed circuit board 1. In other embodiments, the first conductive portion 21 may be located on the bottom layer of the printed circuit board 1, and the second conductive portion 22 may be located on the top layer of the printed circuit board 1; this disclosure does not limit the scope of the embodiments. For clarity, Figures 2 to 5 The specific structures of the first connecting part 31 and the second connecting part 32 are not shown in the image. Figure 2 The gas discharge tube 61 in the electrostatic protection circuit 6 is shown only by way of example.

[0059] Reference Figure 6 and Figure 7 The first conductive part 21 is electrically connected to the grounding terminal of the electrostatic protection circuit 6. Furthermore, since the withstand voltage test circuit 7 is disposed on the top layer of the printed circuit board 1 and the second conductive part 22 is disposed on the bottom layer of the printed circuit board 1, a grounding insulating via can be provided on the printed circuit board 1 to electrically connect the second conductive part 22 to the grounding terminal of the withstand voltage test circuit 7.

[0060] The withstand voltage test switching assembly also includes, for example, a first connection portion 31 and a second connection portion 32. Exemplarily, during a withstand voltage test, the second connection portion 32 is installed within the insulating through-hole H. The second connection portion 32 disconnects the path between the first conductive portion 21 and the second conductive portion 22, thus disconnecting the electrical connection between the grounding terminal of the electrostatic discharge protection circuit 6 and the grounding terminal of the withstand voltage test circuit 7. Only the grounding terminal of the withstand voltage test circuit 7 is grounded through the second conductive portion 22, and the grounding terminal of the electrostatic discharge protection circuit 6 is no longer grounded. Therefore, while the withstand voltage test circuit 7 can perform withstand voltage tests, the grounding terminal of the electrostatic discharge protection circuit 6 is no longer grounded, preventing the electrostatic discharge protection circuit 6 from being broken down by high voltage. This eliminates the need to use components with high withstand voltage values ​​in the electrostatic discharge protection circuit 6 and reduces its cost.

[0061] After the withstand voltage test is completed, the second connecting part 32 is removed from the insulating through hole H, and the first connecting part 31 is assembled into the insulating through hole H. The first connecting part 31 conducts the path between the first conductive part 21 and the second conductive part 22. The grounding terminal of the electrostatic protection circuit 6 and the grounding terminal of the withstand voltage test circuit 7 are electrically connected and can both be grounded, so that the electrostatic protection circuit 6 can work normally and provide electrostatic protection for electronic equipment.

[0062] The withstand voltage test switching component provided in this embodiment disconnects the path between the first conductive part 21 and the second conductive part 22 during withstand voltage testing using the second connecting part. This de-energizes the grounding terminal of the electrostatic protection circuit 6 and the grounding terminal of the withstand voltage test circuit 7, leaving only the grounding terminal of the withstand voltage test circuit 7 grounded, while the grounding terminal of the electrostatic protection circuit 6 remains ungrounded. While the withstand voltage test circuit 7 can perform withstand voltage testing, the de-energization of the electrostatic protection circuit 6 prevents it from being damaged by high voltage, improving its safety and eliminating the need for high-voltage components, thus reducing its cost. After the withstand voltage test, the first connecting part 31 reconnects the path between the first conductive part 21 and the second conductive part 22, ensuring that the grounding terminals of the electrostatic protection circuit 6 and the withstand voltage test circuit 7 are electrically connected and both grounded. This allows the electrostatic protection circuit 6 to function normally, providing electrostatic protection for electronic devices. Furthermore, it eliminates the need for larger components to achieve electrostatic protection and withstand voltage testing for electronic devices, saving layout space on the printed circuit board 1.

[0063] Figure 8 This is a top view of another withstand voltage test switching component provided in an embodiment of this disclosure. Figure 9 This is a schematic diagram illustrating the assembly of a conductive component to an insulating through-hole according to an embodiment of this disclosure. Figure 10 This is a bottom view of another withstand voltage test switching component provided in an embodiment of this disclosure. Figure 11 for Figure 10 A magnified schematic diagram of a portion of region C in the middle. Optionally, combined with... Figures 6 to 11 The first connecting part 31 includes a conductive element 311 and a fixing element 312; the conductive element 311 is fastened to the fixing element 312 through an insulating through hole H, and the conductive element 311 is electrically connected to the first conductive part 21, and the fixing element 312 is electrically connected to the second conductive part 22.

[0064] Specifically, in combination Figures 6 to 11 The first connecting part 31 may include, for example, a conductive element 311 and a fixing element 312. The conductive element 311 passes through the insulating through hole H and is fastened to the fixing element 312. The conductive element 311 is electrically connected to the first conductive part 21, and the fixing element 312 is electrically connected to the second conductive part 22.

[0065] For example, after the withstand voltage test, the conductive component 311 is assembled onto the insulating through-hole H and securely connected to the fixing component 312. The grounding terminal of the electrostatic protection circuit 6 is electrically connected through the first conductive part 21, the conductive component 311, and the fixing component 312. The grounding terminal of the withstand voltage test circuit 7 is electrically connected to the fixing component 312 through the second conductive part 22. The fixing component 312 can be used for grounding, so both the grounding terminal of the electrostatic protection circuit 6 and the grounding terminal of the withstand voltage test circuit 7 are grounded after being electrically connected. This allows the electrostatic protection circuit 6 to function normally and provide electrostatic protection for the electronic equipment.

[0066] Figure 12 This is a schematic cross-sectional view of another withstand voltage test switching component provided in an embodiment of this disclosure. Figure 13 A schematic cross-sectional view of another withstand voltage test switching component provided in an embodiment of this disclosure. Optionally, in conjunction with... Figure 6 , Figure 9 , Figure 12 and Figure 13 The first connecting portion 31 further includes a first conductive pad 313 and / or a second conductive pad 314; the first conductive pad 313 is detachably disposed between the first conductive portion 21 and the conductive member 311; the second conductive pad 314 is detachably disposed between the second conductive portion 22 and the fixing member 312.

[0067] Figure 6 and Figure 9The diagram exemplarily illustrates that after the withstand voltage test, a first conductive pad 313 is disposed between the first conductive part 21 and the conductive element 311. The conductive element 311 is mounted on the insulating through-hole H and securely connected to the fixing member 312. The grounding terminal of the electrostatic protection circuit 6 is electrically connected sequentially through the first conductive part 21, the first conductive pad 313, the conductive element 311, and the fixing member 312. The grounding terminal of the withstand voltage test circuit 7 is electrically connected to the fixing member 312 through the second conductive part 22. The fixing member 312 can be grounded, therefore the grounding terminal of the electrostatic protection circuit 6 and the grounding terminal of the withstand voltage test circuit 7 are electrically connected and both grounded. Thus, the first conductive pad 313 ensures more sufficient contact between the first conductive part 21 and the conductive element 311, improving the electrical connection stability between the first conductive part 21 and the conductive element 311.

[0068] Figure 12 The diagram exemplarily illustrates that after the withstand voltage test, a second conductive pad 314 can be disposed between the second conductive part 22 and the fixing member 312. The conductive member 311 is assembled onto the insulating through-hole H and securely connected to the fixing member 312. The grounding terminal of the electrostatic protection circuit 6 is sequentially electrically connected to the first conductive part 21, the conductive member 311, and the fixing member 312. The grounding terminal of the withstand voltage test circuit 7 is sequentially electrically connected to the second conductive part 22, the second conductive pad 314, and the fixing member 312. The fixing member 312 can be grounded, ensuring that both the grounding terminals of the electrostatic protection circuit 6 and the withstand voltage test circuit 7 are grounded after electrical connection. Thus, the second conductive pad 314 ensures more sufficient contact between the second conductive part 22 and the conductive member 311, improving the electrical connection stability between the second conductive part 22 and the fixing member 312.

[0069] Figure 13 The diagram exemplarily illustrates that after the withstand voltage test, the conductive element 311 is assembled onto the insulating through-hole H and securely connected to the fixing element 312. A first conductive pad 313 is disposed between the first conductive part 21 and the conductive element 311, and a second conductive pad 314 is disposed between the first conductive part 21 and the conductive element 311. The grounding terminal of the electrostatic protection circuit 6 is electrically connected sequentially through the first conductive part 21, the first conductive pad 313, the conductive element 311, and the fixing element 312. The grounding terminal of the withstand voltage test circuit 7 is electrically connected sequentially through the second conductive part 22, the second conductive pad 314, and the fixing element 312.

[0070] It should be noted that the first conductive pad 313 may be detachably provided only between the first conductive part 21 and the conductive member 311, or the second conductive pad 314 may be detachably provided only between the second conductive part 22 and the fixing member 312. Alternatively, the first conductive pad 313 may be detachably provided between the first conductive part 21 and the conductive member 311, and the second conductive pad 314 may be detachably provided between the second conductive part 22 and the fixing member 312. This embodiment of the present disclosure does not limit this.

[0071] Therefore, by detachably disposing the first conductive pad 313 between the first conductive part 21 and the conductive member 311, the contact between the first conductive part 21 and the conductive member 311 is made more sufficient, thereby improving the reliability of the electrical connection between the first conductive part 21 and the conductive member 311. Similarly, by detachably disposing the second conductive pad 314 between the second conductive part 22 and the fixing member 312, the contact between the second conductive part 22 and the fixing member 312 is made more sufficient, thereby improving the reliability of the electrical connection between the second conductive part 22 and the fixing member 312.

[0072] Figure 14 This is a schematic cross-sectional view of another withstand voltage test switching component provided in an embodiment of this disclosure. Optionally, as... Figure 14 As shown, the second connecting part 32 includes an insulating gasket 321; the insulating gasket 321 is detachably disposed between the first conductive part 21 and the conductive member 311.

[0073] For example, such as Figure 14 As shown, during the withstand voltage test, the insulating pad 321 is placed between the first conductive part 21 and the conductive member 311, disconnecting the electrical connection between the first conductive part 21 and the conductive member 311. The grounding terminal of the electrostatic protection circuit 6 cannot be electrically connected to the fixing member 312 through the first conductive part 21, the conductive member 311, and the second conductive part 22. This disconnects the electrical connection between the grounding terminal of the electrostatic protection circuit 6 and the grounding terminal of the withstand voltage test circuit 7, thus the grounding terminal of the electrostatic protection circuit 6 is no longer grounded. Since the grounding terminal of the withstand voltage test circuit 7 is electrically connected to the second conductive part 22, and the second conductive part 22 is electrically connected to the fixing member 312, the insulating pad 321 does not affect the electrical connection between the withstand voltage test circuit 7 and the fixing member 312. Therefore, the grounding terminal of the withstand voltage test circuit 7 can still be normally grounded for the withstand voltage test.

[0074] After the withstand voltage test is completed, remove the insulating gasket 321, and refer to... Figure 6 A first conductive pad 313 is provided between the first conductive part 21 and the conductive member 311. The grounding terminal of the electrostatic protection circuit 6 is electrically connected to the fixing member 312 via the first conductive part 21, the first conductive pad 313, and the conductive member 311 in sequence. The grounding terminal of the withstand voltage test circuit 7 is electrically connected to the fixing member 312 via the second conductive part 22. This ensures that the grounding terminals of the electrostatic protection circuit 6 and the withstand voltage test circuit 7 are both grounded after being electrically connected, enabling the electrostatic protection circuit 6 to work normally and provide electrostatic protection for electronic equipment.

[0075] Figure 15 This is a schematic cross-sectional view of another withstand voltage test switching component provided in an embodiment of this disclosure. Optionally, as... Figure 15As shown, the second connecting part 32 includes an insulating member 322; the insulating member 322 is fastened to the fixing member 312 through the insulating through hole H.

[0076] For example, such as Figure 15 As shown, during the withstand voltage test, the insulating component 322 is securely connected to the fixing component 312 through the insulating through-hole H. Since the insulating component 322 is non-conductive, the electrical connection between the first conductive part 21 and the fixing component 312 is broken, and the grounding terminal of the electrostatic protection circuit 6 is no longer grounded. The grounding terminal of the withstand voltage test circuit 7 is grounded through the second conductive part 22 and the fixing component 312, thereby performing the withstand voltage test.

[0077] After the withstand voltage test, the insulating component 322 is removed from the insulating through-hole H, and the conductive component 311 is installed in the insulating through-hole H. The conductive component 311 is fastened to the fixing component 312 through the insulating through-hole H. Figure 6 Taking a structure where a first conductive pad 313 is provided between the intermediate conductive component 311 and the first conductive part 21 as an example, the grounding terminal of the electrostatic protection circuit 6 is electrically connected to the fixing component 312 via the first conductive part 21, the first conductive pad 313, and the conductive component 311 in sequence. The grounding terminal of the electrostatic protection circuit 6 can be grounded through the fixing component 312 to achieve the function of electrostatic protection for electronic equipment. The grounding terminal of the withstand voltage test circuit 7 is electrically connected to the fixing component 312 via the second conductive part 22, so the grounding terminal of the withstand voltage test circuit 7 can also be grounded.

[0078] Optionally, combined Figure 6 , Figure 7 , Figures 12 to 15 The withstand voltage test switching component also includes a housing 4, which is grounded; the fastener 312 is electrically connected to the housing 4.

[0079] Specifically, in combination Figure 6 , Figure 7 , Figures 12 to 15 The withstand voltage test switching component also includes a housing 4. The housing 4 of the electronic device is grounded and is electrically connected to the housing 4 by setting a fixing piece 312, so that the fixing piece 312 is also grounded.

[0080] For example, with Figure 15 Taking the structure of the withstand voltage test switching component as an example, when performing a withstand voltage test on an electronic device, the insulating component 322 is fastened to the fixing component 312 through the insulating through hole H. Since the insulating component 322 cannot conduct electricity, the electrical connection between the first conductive part 21 and the fixing component 312 is broken, which also breaks the electrical connection between the first conductive part 21 and the housing 4. Therefore, the grounding terminal of the electrostatic protection circuit 6 is no longer grounded. The grounding terminal of the withstand voltage test circuit 7 is electrically connected to the fixing component 312 through the second conductive part 22. The fixing component 312 is electrically connected to the housing 4, thus grounding the grounding terminal of the withstand voltage test circuit 7, thereby performing the withstand voltage test.

[0081] After the withstand voltage test, the insulating component 322 is replaced with the conductive component 311, which is then securely connected to the fixing component 312 through the insulating through-hole H. Figure 6 Taking a structure where a first conductive pad 313 is provided between the intermediate conductive component 311 and the first conductive part 21 as an example, the grounding terminal of the electrostatic protection circuit 6 is electrically connected to the fixing component 312 via the first conductive part 21, the first conductive pad 313, and the conductive component 311 in sequence. The grounding terminal of the electrostatic protection circuit 6 can be grounded by being electrically connected to the housing 4 via the fixing component 312, thereby achieving the function of electrostatic protection for electronic equipment. The grounding terminal of the withstand voltage test circuit 7 is electrically connected to the fixing component 312 via the second conductive part 22, so the grounding terminal of the withstand voltage test circuit 7 can also be grounded.

[0082] Optionally, combined Figure 6 , Figure 7 , Figures 12 to 15 The pressure test switching component also includes a heat sink 5; the fastener 312 is connected to the housing 4 through the heat sink 5.

[0083] Specifically, in combination Figure 6 , Figure 7 , Figures 12 to 15 The withstand voltage test switching assembly also includes a heat sink 5, which is disposed between the fixing member 312 and the housing 4. The heat sink 5 is electrically connected to both the fixing member 312 and the housing 4. For example, screw holes can be provided on both the heat sink 5 and the housing 4, and the screw holes on the heat sink 5 and the housing 4 can be connected by a ground wire (PE) to achieve the connection between the heat sink 5 and the housing 4. The fixing member 312 is grounded after being connected to the housing 4 through the heat sink 5.

[0084] For example, with Figure 15 Taking the structure of the withstand voltage test switching component as an example, during the withstand voltage test, the insulating component 322 is fastened to the fixing component 312 through the insulating through hole H, disconnecting the electrical connection between the first conductive part 21 and the fixing component 312. The grounding terminal of the electrostatic protection circuit 6 is no longer electrically connected to the housing 4 through the fixing component 312 and the heat sink 5 to achieve grounding. The grounding terminal of the withstand voltage test circuit 7 is electrically connected to the fixing component 312 through the second conductive part 22, and the fixing component 312 is electrically connected to the housing 4 through the heat sink 5, thus grounding the grounding terminal of the withstand voltage test circuit 7 for withstand voltage testing.

[0085] After the withstand voltage test, the insulating component 322 is replaced with the conductive component 311. The conductive component 311 is fastened to the fixing component 312 through the insulating through hole H. Taking the first conductive pad 313 between the conductive component 311 and the first conductive part 21 as an example, the grounding terminal of the electrostatic protection circuit 6 is electrically connected to the fixing component 312 through the first conductive part 21, the first conductive pad 313, the conductive component 311 in sequence. Since the fixing component 312 is also electrically connected to the second conductive part 22, the grounding terminal of the withstand voltage test circuit 7 is electrically connected to the second conductive part 22. Therefore, the grounding terminal of the electrostatic protection circuit 6 and the grounding terminal of the withstand voltage test circuit 7 are electrically connected and are both grounded through the heat sink 5 and the housing 4.

[0086] Therefore, by setting a heat sink 5 between the fixing member 312 and the housing 4, on the one hand, the heat sink 5 dissipates the heat generated by the withstand voltage test switching component when the electrostatic protection circuit 6 and the withstand voltage test circuit 7 are working. On the other hand, the heat sink 5 also enables the electrical connection between the fixing member 312 and the housing 4, ensuring the reliable grounding of the electrostatic protection circuit 6 and the withstand voltage test circuit 7.

[0087] Optionally, combined Figure 9 , Figure 10 and Figure 11 The conductive component 311 includes a conductive bolt, and the fixing component 312 includes a conductive stud.

[0088] Specifically, in combination Figure 9 , Figure 10 and Figure 11 The conductive component 311 can be, for example, a conductive bolt, and the fixing component 312 can be, for example, a conductive stud. On one hand, the conductive bolt is fastened to the conductive stud through the insulating through-hole H, so that the first conductive part 21 and the second conductive part 22 are electrically connected. On the other hand, the conductive stud is also used to support the printed circuit board 1. Where the electrostatic protection circuit 6 and the withstand voltage test circuit 7 are not provided on the printed circuit board 1, the insulating through-hole H can also be provided. After the conductive bolt is fastened to the conductive stud through the insulating through-hole H, it plays a supporting and locking role for the printed circuit board 1.

[0089] Figure 10 and Figure 11 The conductive stud is exemplarily shown to be, for example, a hexagonal stud. The conductive stud can also be other shapes of studs that can conduct electricity and support the printed circuit board 1. The specific shape of the conductive stud is not limited in the embodiments of this disclosure.

[0090] Optionally, such as Figure 15 As shown, the insulating component 322 includes an insulating bolt.

[0091] Specifically, such as Figure 15As shown, the insulating component 322 can be, for example, an insulating bolt, which is fastened to the fixing component 312 through the insulating through-hole H. On one hand, during the withstand voltage test, the insulating bolt can disconnect the electrical connection between the first conductive part 21 and the second conductive part 22, so that the grounding terminal of the electrostatic protection circuit 6 is no longer grounded. On the other hand, by setting the fastening connection between the insulating bolt and the fixing component 312, the fixing component 312 can be electrically connected to the second conductive part 22. During the withstand voltage test, the grounding terminal of the withstand voltage test circuit 7 can be electrically connected to the fixing component 312 through the second conductive part 22, so that the grounding terminal of the withstand voltage test circuit 7 is grounded, ensuring that the withstand voltage test is carried out normally.

[0092] Optionally, combined Figure 6 and Figure 7 The distance between the edge of the first conductive part 21 adjacent to the insulating through hole H and the insulating through hole H is greater than the distance between the edge of the second conductive part 22 adjacent to the insulating through hole H and the insulating through hole H.

[0093] Specifically, in combination Figure 6 and Figure 7 The assembly of the first connecting part 31 and the second connecting part 32 is generally performed on the first side of the printed circuit board 1. If the distance L1 between the edge of the first conductive part 21 and the insulating through hole H is too close, the first conductive part 21 will come into contact with the first conductive part 21 during the process of removing the second connecting part 32 and installing the first connecting part 31, and vice versa. This could cause the copper foil on the first conductive part 21 to curl up, affecting the conductivity of the first conductive part 21. Therefore, the distance L1 between the edge of the first conductive part 21 and the insulating through hole H can be set to be greater than the distance L2 between the edge of the second conductive part 22 and the insulating through hole H to avoid damage to the first conductive part 21 during the assembly of the first connecting part 31 and the second connecting part 32.

[0094] Furthermore, by setting the distance L1 between the edge of the first conductive part 21 adjacent to the insulating through-hole H and the insulating through-hole H to be greater than the distance L2 between the edge of the second conductive part 22 adjacent to the insulating through-hole H, the problem of a short circuit occurring between the conductive component 311 and the first conductive part 21 due to an insufficient distance between the edge of the first conductive part 21 adjacent to the insulating through-hole H and the insulating through-hole H is avoided. This would prevent the electrical connection between the first conductive part 21 and the conductive component 311 from being broken during the withstand voltage test, even with the insulating pad 321, thus avoiding damage to the electrostatic protection circuit 6 during the withstand voltage test. If the distance between the edge of the first conductive part 21 adjacent to the insulating through-hole H is too small, it would also result in an insufficient creepage distance. When a higher voltage is supplied to the withstand voltage test circuit 7, the edge of the first conductive part 21 would discharge, easily breaking down the conductive component 311. Therefore, setting the distance L1 between the edge of the first conductive part 21 adjacent to the insulating through-hole H and the insulating through-hole H to be greater than the distance L2 between the edge of the second conductive part 22 adjacent to the insulating through-hole H and the insulating through-hole H improves the safety of the withstand voltage test switching assembly.

[0095] Optionally, combined Figures 2 to 5 as well as Figures 8 to 11 The first conductive portion 21 and / or the second conductive portion 22 include annular copper plating on the printed circuit board 1.

[0096] Specifically, in combination Figures 2 to 5 as well as Figures 8 to 11 An annular copper plating can be provided on the first side of the printed circuit board 1 as a first conductive part 21, and the inner diameter of the insulating through-hole H on the printed circuit board 1 is smaller than the inner diameter of the annular copper plating on the first side of the printed circuit board 1, so that the annular copper plating is electrically connected to the grounding terminal of the electrostatic protection circuit 6. Alternatively, an annular copper plating can be provided on the second side of the printed circuit board 1 as a second conductive part 22, and the diameter of the insulating through-hole H on the printed circuit board 1 is smaller than the inner diameter of the annular copper plating on the second side of the printed circuit board 1, so that the annular copper plating is electrically connected to the fixing member 312.

[0097] Therefore, after forming the insulating via H on the printed circuit board 1, the first conductive part 21 and / or the second conductive part 22 are then configured as annular copper plating on the printed circuit board 1. When the conductive bolt serves as the conductive element 311, the contact between the conductive element 311 and the annular copper plating is more complete, improving the reliability of the electrical connection between the conductive element 311 and the annular copper plating. Furthermore, since the shape of the copper plating is the same as the shape of the insulating via H, it simplifies the copper plating process of the printed circuit board 1. In addition, the annular copper plating can effectively disperse heat to the printed circuit board 1 and also improve the mechanical strength of the printed circuit board 1.

[0098] It should be noted that the first conductive part 21 may only include the annular copper plating of the printed circuit board 1, or the second conductive part 22 may only include the annular copper plating of the printed circuit board 1, or both the first conductive part 21 and the second conductive part 22 may include the annular copper plating of the printed circuit board 1. The configuration is made according to the actual usage requirements of the withstand voltage test switching component, and this embodiment does not limit the specific configuration.

[0099] This disclosure also provides an electronic device, including the withstand voltage test switching component provided in the above embodiments. Therefore, the electronic device provided in this disclosure has the beneficial effects described in the above embodiments, and will not be elaborated further here. The electronic device may include, for example, a power supply device, a power converter, an inverter, a UPS (uninterruptible power supply), a frequency converter, etc., and this disclosure does not limit the scope of the device.

[0100] This disclosure also provides a method for switching withstand voltage tests. Figure 16 This is a flowchart illustrating a withstand voltage test switching method provided in an embodiment of this disclosure, which can be applied in scenarios requiring switching of the conductivity state of withstand voltage test components. Figure 16 As shown, the method includes the following steps:

[0101] S101. A second connecting part is provided to disconnect the passage between the first conductive part and the second conductive part, and a withstand voltage test is performed.

[0102] Specifically, during the withstand voltage test, a second connecting part is installed within the insulating through-hole. This second connecting part disconnects the path between the first and second conductive parts, thus breaking the electrical connection between the grounding terminal of the electrostatic discharge (ESD) protection circuit and the grounding terminal of the withstand voltage test circuit. The grounding terminal of the ESD protection circuit is no longer grounded, while the grounding terminal of the withstand voltage test circuit remains grounded. Therefore, while the withstand voltage test circuit can perform the withstand voltage test, the ESD protection circuit is prevented from being broken down by high voltage because its grounding terminal is no longer grounded. This eliminates the need for high-voltage components in the ESD protection circuit and reduces its cost.

[0103] S102. After the withstand voltage test is completed, the first connecting part is assembled into the insulating through hole so that the passage between the first conductive part and the second conductive part is connected.

[0104] Specifically, after the withstand voltage test is completed, the second connecting part is removed from the insulating through hole, and the first connecting part is assembled into the insulating through hole. The first connecting part conducts the path between the first conductive part and the second conductive part. The grounding terminal of the electrostatic protection circuit and the grounding terminal of the withstand voltage test circuit are electrically connected and can both be grounded, so that the electrostatic protection circuit can work normally and provide electrostatic protection for electronic equipment.

[0105] In some embodiments, the second connecting portion may include, for example, an insulating gasket, and the first connecting portion may include, for example, a conductive bolt, a first conductive gasket, and a conductive stud. During a withstand voltage test, the insulating gasket is placed between the first conductive portion and the conductive bolt, and the conductive bolt is fastened to the conductive stud through an insulating through-hole. The insulating gasket disconnects the electrical connection between the first conductive portion and the conductive bolt, preventing the grounding terminal of the electrostatic protection circuit from being electrically connected to the conductive stud via the first conductive portion, the conductive bolt, and the second conductive portion. This disconnects the electrical connection between the grounding terminal of the electrostatic protection circuit and the grounding terminal of the withstand voltage test circuit, thus the grounding terminal of the electrostatic protection circuit is no longer grounded. Since the grounding terminal of the withstand voltage test circuit is electrically connected to the second conductive portion, and the second conductive portion is electrically connected to the conductive stud, the insulating gasket does not affect the electrical connection between the grounding terminal of the withstand voltage test circuit and the conductive stud. Therefore, the grounding terminal of the withstand voltage test circuit can still be normally grounded for the withstand voltage test.

[0106] After the withstand voltage test, the insulating gasket is removed, and a first conductive gasket is placed between the first conductive part and the conductive bolt. The grounding terminal of the electrostatic protection circuit is then electrically connected to the conductive stud via the first conductive part, the first conductive gasket, the conductive bolt, and the conductive stud. The grounding terminal of the withstand voltage test circuit is electrically connected via the second conductive part and the conductive stud. This ensures that both the grounding terminals of the electrostatic protection circuit and the withstand voltage test circuit are grounded, enabling the electrostatic protection circuit to function normally and provide electrostatic protection for the electronic equipment.

[0107] In other embodiments, the second connecting portion may include, for example, an insulating bolt, and the first connecting portion may include, for example, a conductive bolt, a first conductive washer, and a conductive stud. During the withstand voltage test, the insulating bolt is fastened to the conductive stud through the insulating through-hole. Since the insulating bolt is non-conductive, the electrical connection between the first conductive portion and the conductive stud is broken, and the grounding terminal of the electrostatic protection circuit is no longer grounded. The grounding terminal of the withstand voltage test circuit is electrically connected to the ground through the second conductive portion and the conductive stud. The insulating bolt does not affect the electrical connection between the grounding terminal of the withstand voltage test circuit and the conductive stud; that is, the grounding terminal of the withstand voltage test circuit can still be grounded normally, thereby enabling the withstand voltage test.

[0108] After the withstand voltage test, the insulating bolt is removed from the insulating through hole, and a conductive bolt is installed in the insulating through hole. The conductive bolt is then fastened to the conductive stud through the insulating through hole. The grounding terminal of the electrostatic protection circuit is electrically connected to the conductive stud in sequence via the first conductive part, the first conductive washer, the conductive bolt, and the conductive stud. The grounding terminal of the electrostatic protection circuit can be grounded through the conductive stud to achieve electrostatic protection for electronic equipment. The grounding terminal of the withstand voltage test circuit is electrically connected to the conductive stud through the second conductive part, thus the grounding terminal of the withstand voltage test circuit can also be grounded.

[0109] This disclosure provides a withstand voltage test switching component, electronic device, and withstand voltage test switching method. During withstand voltage testing, the second connecting part disconnects the path between the first and second conductive parts, de-energizing the grounding terminals of the electrostatic discharge (ESD) protection circuit and the withstand voltage test circuit. Only the grounding terminal of the withstand voltage test circuit is grounded, while the grounding terminal of the ESD protection circuit remains ungrounded. While the withstand voltage test circuit can perform the withstand voltage test, the ungrounded ESD protection circuit is protected from high-voltage breakdown, improving its safety. Furthermore, it eliminates the need for high-voltage components in the ESD protection circuit, reducing its cost. After the withstand voltage test, the first connecting part reconnects the path between the first and second conductive parts, ensuring both the grounding terminals of the ESD protection circuit and the withstand voltage test circuit are grounded. This allows the ESD protection circuit to function normally, providing ESD protection for the electronic device. Additionally, it eliminates the need for larger components to achieve ESD protection and withstand voltage testing for the electronic device, saving printed circuit board layout space.

[0110] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0111] The above description is merely a specific embodiment of this disclosure, enabling those skilled in the art to understand or implement it. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this disclosure. Therefore, this disclosure is not to be limited to the embodiments described herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A withstand voltage test switching component, characterized in that, include: Printed circuit boards; The printed circuit board is provided with insulating through holes; First conductive part; Located on the first side of the printed circuit board and surrounding the insulating through hole; the first conductive part is used for electrical connection with the ground terminal of the electrostatic protection circuit; A second conductive portion is located on the second side of the printed circuit board and is disposed around the insulating through-hole; the second conductive portion is used for electrical connection with the ground terminal of the withstand voltage test circuit; the first side and the second side are opposite sides of the printed circuit board; A first connecting portion; the first connecting portion detachably connects the first conductive portion and the second conductive portion through the insulating through hole; The second connecting part detachably disconnects the passage between the first conductive part and the second conductive part.

2. The withstand voltage test switching component according to claim 1, characterized in that, The first connecting part includes a conductive element and a fixing element; The conductive component is fastened to the fixing component through the insulating through hole, and the conductive component is electrically connected to the first conductive part, while the fixing component is electrically connected to the second conductive part.

3. The withstand voltage test switching component according to claim 2, characterized in that, The first connecting portion further includes a first conductive pad and / or a second conductive pad; the first conductive pad is detachably disposed between the first conductive portion and the conductive member; the second conductive pad is detachably disposed between the second conductive portion and the fixing member.

4. The withstand voltage test switching component according to claim 2, characterized in that, The second connection portion includes an insulating gasket; the insulating gasket is detachably disposed between the first conductive portion and the conductive element.

5. The withstand voltage test switching component according to claim 2, characterized in that, The second connecting part includes an insulating member; the insulating member is fastened to the fixing member through the insulating through hole.

6. The withstand voltage test switching component according to claim 2, characterized in that, It also includes a housing, which is grounded; the fastener is electrically connected to the housing.

7. The withstand voltage test switching component according to claim 6, characterized in that, It also includes a heat sink; the fastener is connected to the housing via the heat sink.

8. The withstand voltage test switching component according to any one of claims 2-7, characterized in that, The conductive component includes a conductive bolt, and the fixing component includes a conductive stud.

9. The withstand voltage test switching component according to claim 5, characterized in that, The insulating component includes insulating bolts.

10. The withstand voltage test switching assembly according to any one of claims 1-7, characterized in that, The distance between the edge of the first conductive part near the insulating through hole and the insulating through hole is greater than the distance between the edge of the second conductive part near the insulating through hole and the insulating through hole.

11. The withstand voltage test switching assembly according to any one of claims 1-7, characterized in that, The first conductive portion and / or the second conductive portion includes an annular copper cladding on the printed circuit board.

12. An electronic device, characterized in that, Includes the withstand voltage test switching component as described in any one of claims 1-11.

13. A method for switching during withstand voltage testing, characterized in that, The withstand voltage test switching method employs the withstand voltage test switching component as described in any one of claims 1-11, and the withstand voltage test switching method includes: The second connecting part is set to disconnect the passage between the first conductive part and the second conductive part, and a withstand voltage test is performed; After the withstand voltage test is completed, the first connecting part is assembled into the insulating through hole to make the passage between the first conductive part and the second conductive part conductive.

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