Surge protection grounding structure

Abstract

The utility model provides a kind of surge protection grounding structure, it is related to electrical safety testing technical field.In the utility model, when installing through connection piece, surge protection module forms through connection with ground piece, guarantee the safety of protected circuit;When through connection piece is disassembled, surge protection module is disconnected with ground piece, avoid surge protection module to be turned on in advance in the process of withstand voltage test, guarantee withstand voltage test to be carried out smoothly, so as to give consideration to the eligibility of withstand voltage test and the reliability of surge protection function.In addition, support piece is arranged on the side surface of PCB board away from conducting part, support piece is located between PCB board and ground piece, when through connection piece is installed, it can provide effective support to PCB board, enhance the carrying capacity of PCB board, improve the stability and durability of overall structure.The utility model not only realizes the consideration of withstand voltage test and surge protection function, but also improves the mechanical strength of PCB board through support piece.

Description

Technical Field

[0001] This utility model relates to the field of electrical safety testing technology, and in particular to a surge protection grounding structure. Background Technology

[0002] During the widespread promotion of new energy vehicles, charging piles and on-board charging systems face the risk of lightning surge voltage intrusion. Lightning surges can enter the vehicle through the charging port, potentially causing insulation breakdown and phase-to-phase short circuits in on-board electronic devices; in severe cases, they can even cause equipment fires, creating safety hazards. Therefore, vehicle charging interfaces generally employ surge protection circuits to protect the vehicle's circuitry. However, during the production and testing of the vehicle's electrical system, insulation withstand voltage testing is typically required. Before the test voltage reaches the specified limit, the surge protection module may activate prematurely due to direct conduction with the grounding component, causing the withstand voltage test to fail. In this situation, while surge protection is achieved, it hinders the reliable implementation of the withstand voltage test, limiting the application of this type of electrical structure. Furthermore, when traditional PCB circuit boards are fixed to the grounding component, the installation pressure applied by the connectors often acts directly on the PCB board itself, easily causing uneven stress, damage, or deformation, affecting the overall mechanical strength and reliability. Therefore, existing technologies cannot simultaneously meet the requirements of surge protection and withstand voltage testing, and the mechanical load-bearing capacity of PCB boards is insufficient. There is an urgent need for an improved structure that can simultaneously meet the requirements of surge protection and withstand voltage testing, and improve the mechanical strength of PCB boards. Utility Model Content

[0003] In view of the shortcomings of the prior art described above, the purpose of this utility model is to provide a surge protection grounding structure to solve the related problems in the prior art.

[0004] To achieve the above and other related objectives, this utility model provides a surge protection grounding structure, comprising:

[0005] PCB board, surge protection module, conductive connectors and grounding components;

[0006] The PCB board has a conductive component on one side surface, and the surge protection module is electrically connected to the conductive component.

[0007] The conductive connector is detachably installed between the PCB board and the grounding component. When the conductive connector is installed, the surge protection module is conductively connected to the grounding component through the conductive connector. When the conductive connector is removed, the surge protection module is disconnected from the grounding component.

[0008] A support member is provided on the other side of the PCB board away from the conductive component. The support member is located between the PCB board and the grounding component. The support member is used to provide support for the PCB board when the conductive connector is installed, so as to enhance the load-bearing capacity of the PCB board.

[0009] Furthermore, the conductive component is a first copper trace disposed on one side surface of the PCB board, and the first copper trace is electrically connected to the surge protection module.

[0010] Furthermore, the PCB board is provided with a conductive connection hole, and the conductive connector can be inserted through the conductive connection hole and connected to the grounding component.

[0011] Furthermore, the conductive connector includes a connecting cap and a connecting rod, the diameter of the connecting cap being larger than the diameter of the conductive connection hole, and the connecting rod having an external thread.

[0012] Furthermore, the support member is a second copper trace formed on the surface of the PCB board opposite to the conductive member.

[0013] Furthermore, the PCB board includes an insulating substrate, the first copper trace and the second copper trace are respectively disposed on both sides of the insulating substrate, and the through connection hole passes through the first copper trace, the insulating substrate and the second copper trace.

[0014] Furthermore, the support member includes a support area on a plane, the support area corresponds to the top surface of the grounding member in the vertical direction in space, and the area of ​​the support area is greater than or equal to the area of ​​the top surface of the grounding member, and the support area is insulated from the grounding member.

[0015] Furthermore, the outer surface of the support area is covered with an insulating coating to keep the support member insulated from the grounding member.

[0016] Furthermore, an insulating pad is provided between the support area and the grounding member to keep the support member and the grounding member insulated.

[0017] Furthermore, the support member includes a support area on a plane, the support area corresponds to the top surface of the grounding member in the vertical direction of space, and the area of ​​the support area is greater than or equal to the area of ​​the top surface of the grounding member. A break is provided between the outer edge of the support area and other areas of the support member to cut off the current conduction from the support member to the grounding member.

[0018] As described above, the surge protection grounding structure of this utility model has at least the following beneficial effects, including but not limited to:

[0019] This invention features a conductive component on a PCB board electrically connected to a surge protection module. A detachable conductive connector is installed between the PCB board and a grounding component. When the connector is installed, the surge protection module forms a conductive connection with the grounding component, effectively dissipating surge energy to the grounding component and ensuring the safety of the protected circuit. When the connector is removed, the surge protection module is disconnected from the grounding component, preventing premature grounding during withstand voltage testing and ensuring the test can proceed smoothly. This balances the pass rate of the withstand voltage test with the reliability of the surge protection function. Furthermore, a support component is located on the side of the PCB board away from the conductive component, between the PCB board and the grounding component. This support provides effective support to the PCB board when the connector is installed, enhancing its load-bearing capacity and preventing damage caused by the installation pressure of the connector. This improves the overall structural stability and durability. Therefore, this utility model not only achieves both withstand voltage testing and surge protection functions, but also improves the mechanical strength of the PCB board through the support components, ensuring the reliability and applicability of the structure. Attached Figure Description

[0020] Figure 1 This is shown as one of the structural schematic diagrams of a surge protection grounding structure in an embodiment of this application;

[0021] Figure 2 The second schematic diagram shows a surge protection grounding structure according to an embodiment of this application.

[0022] Figure 3 The third schematic diagram shows a surge protection grounding structure according to an embodiment of this application.

[0023] Icons: 1. PCB board, 2. Conductive connector, 3. Grounding component, 4. Conductive component, 5. Support component, 6. Insulating substrate, 7. Support area, 8. Break, 9. Insulating coating, 10. Insulating gasket. Detailed Implementation

[0024] The following specific examples illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this utility model. It should be noted that, unless otherwise specified, the following embodiments and features described therein can be combined with each other.

[0025] It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of the present invention. Therefore, the illustrations only show the components related to the present invention and are not drawn according to the number, shape and size of the components in actual implementation. In actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0026] Please refer to Figure 1 This application discloses a surge protection grounding structure, including a PCB board 1, a surge protection module, a conductive connector 2, and a grounding component 3. A conductive component 4 is provided on one side surface of the PCB board 1, and the surge protection module is electrically connected to the conductive component 4. The conductive connector 2 is detachably installed between the PCB board 1 and the grounding component 3. When the conductive connector 2 is installed, the surge protection module is electrically connected to the grounding component 3 through the conductive connector 2. When the conductive connector 2 is detached, the surge protection module is disconnected from the grounding component 3. A support component 5 is provided on the other side surface of the PCB board 1 away from the conductive component 4. The support component 5 is located between the PCB board 1 and the grounding component 3, and is used to provide support for the PCB board 1 when the conductive connector 2 is installed, thereby enhancing the load-bearing capacity of the PCB board 1.

[0027] It is worth noting that this utility model, by setting a conductive element 4 on the PCB board 1 and electrically connecting it to the surge protection module, and simultaneously setting a detachable conductive connector 2 between the PCB board 1 and the grounding element 3, allows the surge protection module to form a conductive connection with the grounding element 3 through the conductive connector 2 when the conductive connector 2 is installed. This effectively dissipates surge energy to the grounding element 3 when a surge voltage occurs, ensuring the safety of the protected circuit. When the conductive connector 2 is removed, the surge protection module is disconnected from the grounding element 3, preventing the surge protection module from prematurely grounding during withstand voltage testing, ensuring the withstand voltage test can proceed smoothly, thus balancing the pass rate of the withstand voltage test and the reliability of the surge protection function. In addition, a support element 5 is set on the surface of the PCB board 1 away from the conductive element 4. The support element 5 is located between the PCB board 1 and the grounding element 3. When the conductive connector 2 is installed, it provides effective support for the PCB board 1, enhancing the load-bearing capacity of the PCB board 1, preventing damage to the PCB board 1 caused by the installation pressure of the conductive connector 2, and improving the stability and durability of the overall structure. Therefore, this utility model not only achieves both withstand voltage testing and surge protection functions, but also enhances the mechanical strength of the PCB board 1 through the support member 5, ensuring the reliability and applicability of the structure. It should be noted that the surge protection module, including the surge protection element GDT and its corresponding circuit, is existing technology and will not be discussed further here.

[0028] In some embodiments, please refer to Figure 1 The conductive component 4 is a first copper trace disposed on one side surface of the PCB board 1, and the first copper trace is electrically connected to the surge protection module.

[0029] Specifically, the first copper trace is formed on one side surface of the PCB board 1. Optionally, the conductive element 4 can also be a continuous copper sheet, copper foil pad, or other metal conductive element 4, which can be electrically connected to the pins or terminals of the surge protection module by welding or crimping. The line width, copper thickness, and copper surface shape of the first copper trace can be designed according to the surge current to meet the electrical carrying requirements, while facilitating the establishment of a path electrical connection with the conductive connector 2.

[0030] In some embodiments, the PCB board is provided with a conductive connection hole, and the conductive connector 2 can be inserted through the conductive connection hole and connected to the grounding component 3.

[0031] Specifically, the conductive connection hole is opened on the PCB board 1, so that the conductive connector 2 passes through one side of the PCB board 1 and is mechanically fixed and electrically connected to the grounding component 3; the hole diameter and position tolerance of the conductive connection hole can be determined according to the structural form and assembly path of the conductive connector 2 to ensure that the conductive connector 2 and the grounding component 3 form a reliable electrical connection.

[0032] In some embodiments, please refer to Figure 1 The conductive connector 2 includes a connecting cap and a connecting rod. The diameter of the connecting cap is larger than the diameter of the conductive connection hole, and the connecting rod is provided with external threads.

[0033] Specifically, the connecting cap is located on one side of the PCB board 1 and covers the conductive connection hole, serving as the end face for force and conductivity; the connecting rod passes through the hole axis, and the external thread of the rod engages with the corresponding threaded component to form an assembly and fixation; the connecting cap can be round or polygonal to apply torque, and the material can be a conductive metal material, with anti-slip textures or micro-protrusions on the contact surface to increase the effective contact area and contact stability; the diameter of the connecting cap is larger than the diameter of the conductive connection hole, which can form a limiting pressure around the hole, and the external thread engages with the corresponding thread to achieve assembly clamping force, improving electrical contact pressure and vibration resistance, while preventing the connecting part from popping out of the hole.

[0034] In some embodiments, please refer to Figure 1 The support member 5 is a second copper trace formed on the surface of the PCB board on the other side opposite to the conductive member 4.

[0035] Specifically, the second copper trace is located on one side of the PCB board 1 between the grounding component 3. It can be a continuous copper surface or a localized copper area, arranged around the conductive connection hole to bear the axial load of the connector. Its copper thickness, coverage area, and shape can be designed according to the assembly torque, thereby increasing the load-bearing cross-section and support stiffness under limited board thickness conditions, and improving the flatness and long-term reliability after assembly. The material used is metallic copper trace. Utilizing the surface support and stiffness advantages of the metallic copper layer, it provides a backing for the hole periphery and board body during the assembly and connection of the conductive connector 2, dispersing stress concentration, reducing local strain, and improving anti-warping and load-bearing capacity.

[0036] In some embodiments, please refer to Figure 1 The PCB board includes an insulating substrate 6, and the first copper trace and the second copper trace are respectively disposed on both sides of the insulating substrate 6. The through connection hole passes through the first copper trace, the insulating substrate 6 and the second copper trace.

[0037] Specifically, by setting an insulating substrate 6 layer in the middle to ensure relative insulation on both sides, the upper and lower copper traces are not relatively conductive. The first copper trace and the second copper trace are respectively covered on both sides of the insulating substrate 6, and the conductive connection hole penetrates the above three layers along the normal direction; to ensure that the clamping force of the connector is reasonably distributed between the upper and lower copper layers and the substrate, and to make the area around the hole have better compressive bearing capacity.

[0038] In some embodiments, the support member 5 includes a support region 7 on a plane, the support region 7 corresponds to the top surface of the grounding member 3 in a spatial vertical direction, and the area of ​​the support region 7 is greater than or equal to the area of ​​the top surface of the grounding member 3, and the support region 7 is insulated from the grounding member 3.

[0039] Specifically, the support area 7 is a specific surface region within the second copper trace. Its shape and size can be set according to the top surface contour of the grounding component 3, so that the two correspond in vertical projection. When the conductive connector 2 is tightened, the reaction force generated by the grounding component 3 is transmitted more evenly to the PCB board 1 through the support area 7. The support area 7 can adopt a regular or geometric shape adapted to the grounding component 3 to improve support coverage and resistance to local pressure. Optionally, the area of ​​the support area 7 is greater than or equal to the top surface area of ​​the grounding component 3 to ensure the completeness of the corresponding support.

[0040] It should be noted that when the support component 5 is made of metal, i.e., the second copper trace, to avoid potential electrical connection between it and the surge protection module in the circuit, this embodiment isolates the current conduction of the support component 5, preventing it from forming an effective electrical path. This ensures that the current from the surge protection module is conducted only through the first copper trace to the grounding component 3, achieving the uniqueness and determinism of the current path. This ensures that the support component 5 only provides mechanical support and does not participate in electrical conduction, thereby further improving the electrical safety and functional stability of the overall structure.

[0041] In some embodiments, please refer to Figure 1 A break 8 is provided between the outer edge of the support area 7 and other areas of the support member 5 to cut off the current conduction from the support member 5 to the grounding member 3.

[0042] Specifically, the break 8 can be an annular notch, a slot, or a copper removal area, set around the support area 7, which can cut off its electrical conduction and retain only the mechanical support function, thereby avoiding the formation of redundant circuit paths and ensuring that the current is discharged only through the first copper trace.

[0043] In some embodiments, please refer to Figure 2 The outer surface of the support area 7 is covered with an insulating coating 9 to keep the support member 5 and the grounding member 3 insulated.

[0044] Specifically, the insulating coating 9 can be insulating varnish or other insulating material, covering the outer surface of the support area 7 to form a stable electrical isolation layer. The coating thickness can be set according to specific requirements to ensure reliable insulation between the grounding component 3 and the support component 5. Optionally, the area on the upper surface of the conductive component 4 other than the conductive connection hole can also be covered with the insulating coating 9 to provide corresponding insulation.

[0045] In some embodiments, please refer to Figure 3 An insulating pad 10 is provided between the support area 7 and the grounding member 3 to keep the support member 5 and the grounding member 3 insulated.

[0046] Specifically, the insulating gasket 10 is placed between the support area 7 and the grounding component 3. The insulating material is not subject to many restrictions here. Its thickness and hardness can be selected according to the assembly pressure. It not only achieves electrical isolation, but also plays a role in buffering and protection, avoiding damage caused by mechanical hard contact.

[0047] In summary, this invention, by incorporating conductive components on the PCB board and electrically connecting them to the surge protection module, and simultaneously providing a detachable conductive connector between the PCB board and the grounding component, allows the surge protection module to form a conductive connection with the grounding component when the conductive connector is installed. This effectively dissipates surge energy to the grounding component when a surge voltage occurs, ensuring the safety of the protected circuit. When the conductive connector is removed, the surge protection module is disconnected from the grounding component, preventing premature grounding during withstand voltage testing and ensuring the test can proceed smoothly. This balances the pass rate of the withstand voltage test with the reliability of the surge protection function. Furthermore, a support component is provided on the side of the PCB board away from the conductive components, located between the PCB board and the grounding component. This support component provides effective support to the PCB board when the conductive connector is installed, enhancing its load-bearing capacity and preventing damage caused by the installation pressure of the conductive connector. This improves the overall structural stability and durability. Therefore, this utility model not only achieves both withstand voltage testing and surge protection functions, but also improves the mechanical strength of the PCB board through the support components, ensuring the reliability and applicability of the structure.

[0048] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

[0049] Throughout this description, numerous specific details, such as examples of components and / or methods, are provided to provide a complete understanding of embodiments of this application. However, those skilled in the art will recognize that embodiments of this invention may be practiced without one or more of these specific details or by other devices, systems, components, methods, parts, materials, components, etc. In other instances, well-known structures, materials, or operations have not been specifically shown or described in detail to avoid obscuring aspects of embodiments of this application.

[0050] Throughout this specification, references to "an embodiment," "an embodiment," or "a specific embodiment" mean that a particular feature, structure, or characteristic described in connection with an embodiment is included in at least one embodiment of the present invention, but not necessarily in all embodiments. Therefore, the various representations of the phrases "in one embodiment," "in an embodiment," or "in a specific embodiment" in different places throughout the specification do not necessarily refer to the same embodiment. Furthermore, a particular feature, structure, or characteristic of any specific embodiment of the present invention can be combined with one or more other embodiments in any suitable manner. It should be understood that other variations and modifications of the embodiments described herein may be based on the teachings herein and will be considered part of the spirit and scope of the present invention.

[0051] It should also be understood that one or more of the elements shown in the figures may be implemented in a more separate or more integrated manner, or may even be removed because they are inoperable in certain circumstances or provided because they may be useful for a particular application.

[0052] Furthermore, unless otherwise expressly stated, any arrows in the accompanying drawings should be considered illustrative only and not limiting. Additionally, unless otherwise stated, the term "or" as used herein is generally intended to mean "and / or". Where a term is anticipated to provide a separation or combination capability that is unclear, a combination of components or steps will also be considered as indicated.

[0053] As used herein and throughout the claims below, unless otherwise specified, “a” and “the” include the plural references. Similarly, as used herein and throughout the claims below, unless otherwise specified, “in” means “in” and “on”.

[0054] The above description of the embodiments shown in this utility model (including the content in the abstract of the specification) is not intended to be an exhaustive enumeration or to limit the utility model to the precise forms disclosed herein. Although specific embodiments and examples of the utility model have been described herein for illustrative purposes only, various equivalent modifications are possible within the spirit and scope of the utility model, as will be recognized and understood by those skilled in the art. As indicated, these modifications can be made to the utility model in accordance with the above description of the embodiments of this application, and such modifications will be within the spirit and scope of the utility model.

[0055] This document has generally described the systems and methods in detail to aid in understanding the present invention. Furthermore, various specific details have been set forth to provide a general understanding of the embodiments of this application. However, those skilled in the art will recognize that embodiments of the present invention can be practiced without one or more specific details, or using other devices, systems, accessories, methods, components, materials, parts, etc. In other instances, well-known structures, materials, and / or operations have not been specifically shown or described in detail to avoid obscuring various aspects of the embodiments of this application.

Claims

1. A surge protection grounding structure, characterized in that, include: PCB board, surge protection module, conductive connectors and grounding components; The PCB board has a conductive component on one side surface, and the surge protection module is electrically connected to the conductive component. The conductive connector is detachably installed between the PCB board and the grounding component. When the conductive connector is installed, the surge protection module is conductively connected to the grounding component through the conductive connector. When the conductive connector is removed, the surge protection module is disconnected from the grounding component. A support member is provided on the other side of the PCB board away from the conductive component. The support member is located between the PCB board and the grounding component. The support member is used to provide support for the PCB board when the conductive connector is installed, so as to enhance the load-bearing capacity of the PCB board.

2. The surge protection grounding structure according to claim 1, characterized in that, The conductive component is a first copper trace disposed on one side surface of the PCB board, and the first copper trace is electrically connected to the surge protection module.

3. The surge protection grounding structure according to claim 1, characterized in that, The PCB board is provided with a conductive connection hole, and the conductive connector can be inserted through the conductive connection hole and connected to the grounding component.

4. The surge protection grounding structure according to claim 3, characterized in that, The conductive connector includes a connecting cap and a connecting rod. The diameter of the connecting cap is larger than the diameter of the conductive connection hole, and the connecting rod is provided with external threads.

5. A surge protection grounding structure according to claim 2, characterized in that, The support is a second copper trace formed on the surface of the PCB board on the other side opposite to the conductive element.

6. A surge protection grounding structure according to claim 5, characterized in that, The PCB board includes an insulating substrate, and the first copper trace and the second copper trace are respectively disposed on both sides of the insulating substrate. The through connection hole passes through the first copper trace, the insulating substrate and the second copper trace.

7. A surge protection grounding structure according to claim 5, characterized in that, The support member includes a support area on a plane, which corresponds to the top surface of the grounding member in a vertical spatial direction, and the area of ​​the support area is greater than or equal to the area of ​​the top surface of the grounding member. The support area is insulated from the grounding member.

8. A surge protection grounding structure according to claim 7, characterized in that, The outer surface of the support area is covered with an insulating coating to keep the support member and the grounding member insulated.

9. A surge protection grounding structure according to claim 7, characterized in that, An insulating pad is provided between the support area and the grounding component to keep the support component and the grounding component insulated.

10. A surge protection grounding structure according to claim 5, characterized in that, The support member includes a support area on a plane. The support area corresponds to the top surface of the grounding member in the vertical direction of space. The area of ​​the support area is greater than or equal to the area of ​​the top surface of the grounding member. A break is provided between the outer edge of the support area and other areas of the support member to cut off the current conduction from the support member to the grounding member.

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