Connection structure for improving current-carrying capability from terminal to PCB, PCB and automobile

Abstract

The utility model relates to the technical field of printed circuit boards, and provides a connection structure for improving the current-carrying capability from a terminal to a PCB, the PCB and an automobile, the connection structure comprises the PCB and a fisheye terminal, the PCB comprises a plurality of copper-clad layers, the PCB is provided with at least one plug-in hole, the periphery of each plug-in hole is provided with at least one conductive hole, the plug-in hole vertically penetrates through the PCB, and the fisheye terminal is arranged in the fisheye terminal. The conductive layer is conductively connected with at least one copper-clad layer through conductive holes around the conductive layer; and the fisheye terminal is inserted into one plug-in hole of the PCB. According to the utility model, the periphery of the plug-in hole where the fisheye terminal is contacted with the PCB is provided with at least one conductive hole to connect the PCB multilayer copper-clad layer, so that the diversion area from the fisheye terminal to the PCB end is increased, and the current-carrying capability of the PCB is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of printed circuit boards, and more particularly to a connection structure for improving the current carrying capacity of a terminal to a PCB, a PCB, and an automobile. Background Art

[0002] With the continuous development of the automotive electronic information industry, the functional integration requirements of vehicle-mounted domain controllers are becoming increasingly higher, which also requires that the product driving current is also increasing. In order to improve the current-carrying capacity of the contact surface between the board-end connector and the PCB, the current-carrying problem of the connector pins is generally improved by changing the shape of the board frame and widening the copper foil width. In addition, the fisheye terminal connectors used in existing vehicle-mounted domain controllers have high reliability and stability due to their non-soldering connection method. They can carry large current input and output. The elastic part of the terminal is squeezed to cooperate with the conductive hole of the PCB board, which is convenient for disassembly and maintenance. However, this connection method makes the copper foil area contacting the PCB board significantly smaller, resulting in a reduction in the current-carrying capacity of the product's driving current input to the PCB. Therefore, how to improve the board current carrying capacity of the fisheye terminal to the PCB is a technical problem encountered in current applications. Utility Model Content

[0003] The purpose of the present utility model is to provide a connection structure, a PCB and an automobile for improving the current carrying capacity of a terminal to a PCB, so as to solve the technical problem of how to improve the current carrying capacity of a fisheye terminal to a PCB.

[0004] In a first aspect of an embodiment of the present utility model, a connection structure for improving the current-carrying capacity of a terminal to a PCB is provided, comprising: a PCB comprising a plurality of copper clad layers, and at least one plug-in hole is provided on the PCB, each plug-in hole is surrounded by at least one conductive hole, the plug-in hole vertically passes through the PCB and is conductively connected to the at least one copper clad layer through the surrounding conductive holes; and a fisheye terminal, plugged into one of the plug-in holes of the PCB.

[0005] In some optional embodiments, each conductive via is a through hole, a blind hole, or a buried hole.

[0006] In some optional embodiments, the PCB includes 4, 6 or 8 copper layers.

[0007] In some optional embodiments, the diameter of the plug-in hole is larger than the diameter of the conductive hole.

[0008] In a second aspect of an embodiment of the present utility model, a PCB is provided, comprising a plurality of copper clad layers, and at least one plug-in hole for connecting a fisheye terminal is provided on the PCB, each plug-in hole is surrounded by at least one conductive hole, the plug-in hole vertically passes through the PCB, and is conductively connected to at least one copper clad layer through the surrounding conductive holes.

[0009] In some optional embodiments, each conductive via is a through hole, a blind hole, or a buried hole.

[0010] In some optional embodiments, the PCB includes 4, 6 or 8 copper layers.

[0011] In some optional embodiments, the diameter of the plug-in hole is larger than the diameter of the conductive hole.

[0012] In a third aspect of the embodiments of the present invention, an automobile is provided, which includes the above-mentioned connection structure for improving the current-carrying capacity of the terminal to the PCB.

[0013] In a fourth aspect of the embodiments of the present utility model, a car is provided, which includes the above-mentioned PCB.

[0014] The connection structure provided by the present invention for improving the current-carrying capacity of the terminal to the PCB has at least the following beneficial effects: by providing at least one conductive hole around the plug-in hole where the fisheye terminal contacts the PCB to connect the multiple copper cladding layers of the PCB, the current conduction area from the fisheye terminal to the PCB board end is increased, thereby improving the current-carrying capacity of the PCB and also saving a certain amount of space on the PCB. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0016] Figure 1 A schematic diagram of a connection structure for improving the current carrying capacity of a terminal to a PCB provided by an embodiment of the present utility model;

[0017] Figure 2 A schematic structural diagram of a PCB provided in an embodiment of the present utility model;

[0018] Figure 3 A schematic structural diagram of another PCB provided in an embodiment of the present utility model;

[0019] Figure 4 A schematic structural diagram of another PCB provided in an embodiment of the present utility model;

[0020] Among them, the reference numerals in the figures are:

[0021] 1. PCB; 11. Conductive layer; 12. Plug-in hole; 13. Conductive hole; 14. Insulation layer; 2. Fisheye terminal. DETAILED DESCRIPTION

[0022] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0023] It should be noted that when a component is referred to as being "fixed on" or "disposed on" another component, it may be located directly or indirectly on the other component. When a component is referred to as being "connected to" another component, it may be directly or indirectly connected to the other component. The directions or positions indicated by the terms "upper", "lower", "left", "right", "front", "back", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. are based on the directions or positions shown in the accompanying drawings and are only for the convenience of description and cannot be understood as limitations on this technical solution. The terms "first" and "second" are only used for the purpose of convenience of description and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features. "Multiple" means two or more, unless otherwise clearly and specifically defined.

[0024] Existing electronic devices typically use fisheye terminals to connect to conductive vias on a PCB (Printed Circuit Board) to transmit electrical signals and current. However, the small contact area between the fisheye terminals and the copper foil on the PCB can limit current-carrying capacity, creating a technical issue that requires optimization.

[0025] In view of the above technical problems, an embodiment of the present invention provides a connection structure for improving the current-carrying capacity of the terminal to the PCB. By adding vias near the position where the PCB connects to the fisheye terminal to connect the multi-layer PCB copper clad board, the flow conduction area is increased, thereby improving the current-carrying capacity of the PCB.

[0026] See also Figure 1 In a first embodiment of the present invention, a connection structure for improving the current-carrying capacity of a terminal to a PCB is provided, including a PCB 1 and a fisheye terminal 2. The PCB 1 includes multiple conductive layers 11, each of which is formed by a copper clad layer, that is, the PCB 1 includes multiple copper clad layers, and at least one plug-in hole 12 is provided on the PCB 1. Each plug-in hole is surrounded by at least one conductive hole 13. The plug-in hole 12 vertically penetrates the PCB 1 and is conductively connected to at least one copper clad layer through the surrounding conductive holes 13. The fisheye terminal 2 is detachably plugged into a plug-in hole 12 of the PCB 1.

[0027] In this embodiment, at least one conductive hole 13 is provided around the plug-in hole 12 where the fisheye terminal 2 contacts the PCB 1 to connect the multiple copper clad layers of the PCB 1, thereby increasing the conduction area from the fisheye terminal 2 to the board end of the PCB 1, thereby improving the current carrying capacity of the PCB 1 and saving a certain amount of space for the PCB 1.

[0028] PCB1 is a board used to lay out and connect electronic components according to design requirements and is the fundamental structure of electronic devices. Its structure primarily consists of a base material, a conductive layer, an insulating layer, holes and vias, solder pads, a silkscreen layer, and an optional laminate layer. The base material provides support, the conductive layer forms the circuit, the solder pads connect components, the silkscreen layer provides identification, and the insulating layer 14 and laminate layer protect the circuit from external environmental influences.

[0029] The copper clad layer is the basic material on the PCB1. It is a layer of copper foil on the insulating substrate. These copper foils are conductive and are used to form the conductive path of the circuit, connect components and devices, and provide a path for current.

[0030] Specifically, the number of conductive layers 11 of PCB 1 can vary from single layer to multiple layers. In this embodiment, PCB 1 includes multiple conductive layers 11, wherein the conductive layer 11 is a copper layer in PCB 1 for transmitting current and signals, and can generally be a copper clad layer.

[0031] In some optional embodiments, PCB1 includes 4, 6 or 8 layers of conductive layers 11, or is also referred to as a 4-layer, 6-layer or 8-layer PCB1. Specifically, the 4-layer, 6-layer or 8-layer PCB1 is composed of multiple conductive layers 11 (including internal layers and external layers) and insulating layers 14 alternately stacked. The external layer is used to connect electronic components, and the internal layer supports the transmission of power and signals, adapting to circuit designs of different complexities and performance requirements. In this embodiment, the use of multiple layers of copper clad layers can significantly improve the performance and function of PCB1. Specifically, the fisheye terminal 2 relies on the elastic part to undergo elastic contraction under compression, so that the fisheye terminal 2 can be smoothly inserted into the plug-in hole 12 of PCB1 and cooperate with the conductive hole 13 on PCB1, thereby realizing the electrical connection between the fisheye terminal 2 and PCB1. In this embodiment, the conductive hole 13 is added nearby to connect the multi-layer PCB copper clad board, thereby increasing the conduction area and further improving the current carrying capacity of the PCB.

[0032] The plug-in hole 12 on the PCB 1 is mainly used to insert and fix components (such as the fisheye terminal 2 ) to provide physical support and connection. The plug-in hole 12 is usually designed to be a larger hole to facilitate the installation and removal of the fisheye terminal 2 .

[0033] Conductive vias 13 on PCB 1 are used for electrical connection, forming a conductive path for the circuit and connecting circuits between different layers. Conductive vias 13 are typically small holes with copper plating inside to achieve electrical connection and ensure the transmission of current and signals.

[0034] In this embodiment, the plug-in hole 12 focuses on physical connection and component fixation, while the conductive hole focuses on electrical connection and circuit function.

[0035] In some optional embodiments, the aperture of the plug-in hole 12 is larger than the aperture of the conductive hole 13. The different aperture designs of the plug-in hole 12 and the conductive hole 13 help to improve the functionality and reliability of the PCB. Specifically, the smaller conductive hole 13 only needs to carry out the conductive function to ensure the accuracy of signal transmission, while the larger plug-in hole 12 can reduce interference with other circuits. In addition, the plug-in hole 12 with a larger aperture facilitates the insertion and removal of electronic components (such as the fisheye terminal 2), ensuring that the electronic components can be smoothly installed in place, reducing the difficulty of installation and maintenance. In addition, since PCBs made of different materials have different expansion rates when the temperature changes, the larger aperture can allow a certain amount of displacement, reducing the stress caused by thermal expansion.

[0036] Since the PCB 1 in this embodiment includes multiple conductive layers 11 , the fisheye terminal 2 connected to the PCB 1 is connected to at least one conductive layer 11 through the conductive via 13 , thereby forming an electrical connection.

[0037] In some optional embodiments, at least one conductive hole 13 is provided on the PCB 1 , and each conductive hole 13 can be a through hole, a blind hole, or a buried hole.

[0038] Specifically, see Figure 2 、 Figure 3 and Figure 4 A through hole is a hole that runs through the entire PCB 1 and typically connects all conductive layers 11 of the PCB 1. A blind via is a hole that extends from the outer layer of the PCB 1 to one or more inner layers but does not penetrate the entire PCB 1. Blind vias are typically used to connect outer and inner layers, saving space. A buried via is located inside the PCB 1 and connects two or more inner layers (i.e., inner conductive layers) but is not connected to the outer layers. This embodiment effectively improves the electrical performance and wiring flexibility of the PCB 1 by properly using the conductive vias 13.

[0039] In a second embodiment of the present invention, a PCB 1 is provided, which includes a plurality of conductive layers 11, and the conductive layers 11 are formed by copper clad layers, that is, the PCB 1 includes multiple copper clad layers, and at least one plug-in hole 12 for connecting the fisheye terminal 2 is provided on the PCB 1, and at least one conductive hole 13 is provided around each plug-in hole. The plug-in hole 12 vertically penetrates the PCB 1 and is conductively connected to at least one copper clad layer through the surrounding conductive holes 13.

[0040] In this embodiment, a plug-in hole 12 is provided in the PC for connecting the fisheye terminal 2, and at least one conductive hole 13 is provided around the plug-in hole 12 for connecting the multi-layer copper clad layer of the PCB 1, thereby increasing the conduction area from the fisheye terminal 2 to the PCB board end, thereby improving the current carrying capacity of the PCB and saving a certain amount of space on the PCB.

[0041] In some optional embodiments, each conductive hole 13 is a through hole, a blind hole or a buried hole. Specifically, a through hole refers to a hole that runs through the entire PCB1, usually connecting all the conductive layers 11 of the PCB1. A blind hole extends from the outer layer of the PCB1 to one or more internal layers, but does not penetrate the entire PCB1. Blind holes are usually used to achieve connections between outer layers and internal layers, which has a space-saving effect. A buried hole is located inside the PCB1, connecting two or more internal layers (i.e., internal conductive layers), but is not connected to the outer layer. This embodiment can effectively improve the electrical performance and wiring flexibility of the PCB1 by rationally using the conductive holes 13.

[0042] In some optional embodiments, PCB1 includes 4 layers, 6 layers or 8 layers of copper clad layers. Specifically, the 4-layer, 6-layer or 8-layer PCB1 is composed of multiple conductive layers 11 (including internal layers and external layers) and insulating layers 14 alternately stacked. The external layer is used to connect electronic components, and the internal layer supports the transmission of power and signals, adapting to circuit designs with different complexities and performance requirements. In this embodiment, the use of multiple layers of copper clad layers can significantly improve the performance and functionality of PCB1. Specifically, the fisheye terminal 2 relies on the elastic part to be squeezed and elastically contracted, so that the fisheye terminal 2 can be smoothly inserted into the plug-in hole 12 of PCB1, and cooperate with the conductive hole 13 on PCB1, thereby realizing the electrical connection between the fisheye terminal 2 and PCB1. In this embodiment, the conductive hole 13 is added nearby to connect the multi-layer PCB copper clad board, thereby increasing the conduction area and further improving the current carrying capacity of the PCB.

[0043] In some optional embodiments, the diameter of the plug-in hole 12 is larger than the diameter of the conductive hole 13. The smaller conductive hole 13 only needs to carry out the conductive function to ensure the accuracy of signal transmission, while the larger plug-in hole 12 can reduce interference with other circuits. Furthermore, the larger plug-in hole 12 facilitates the insertion and removal of electronic components (such as the fisheye terminal 2), ensuring that the electronic components can be installed in place smoothly and reducing the difficulty of installation and maintenance. In addition, because PCBs made of different materials expand at different rates when the temperature changes, the larger hole diameter can allow for some displacement, reducing the stress caused by thermal expansion.

[0044] In a third embodiment of the present invention, an automobile is provided, comprising the connection structure for improving the current-carrying capacity of a terminal to a PCB according to the above-described embodiment. Specifically, the connection structure for improving the current-carrying capacity of a terminal to a PCB according to the first embodiment can be applied in an automobile. By connecting multiple layers of copper cladding on the PCB through conductive vias around the contact area between the fisheye terminal and the PCB, the current-conducting area between the fisheye terminal and the PCB is increased, thereby improving the current-carrying capacity of the PCB.

[0045] In a fourth embodiment of the present invention, an automobile is provided, comprising the aforementioned PCB. Specifically, the PCB of the second embodiment can be used in an automobile. By connecting the multiple copper layers of the PCB through conductive vias around the contact area between the fisheye terminal and the PCB, the current conducting area from the fisheye terminal to the PCB end is increased, thereby improving the current carrying capacity of the PCB.

[0046] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A connection structure for improving the current carrying capacity of a terminal to a PCB, characterized in that: include: A PCB comprising a plurality of copper clad layers and having at least one plug-in hole formed thereon, each plug-in hole being surrounded by at least one conductive hole, the plug-in hole vertically penetrating the PCB and being conductively connected to the at least one copper clad layer through the surrounding conductive holes; The fisheye terminal is plugged into a plug-in hole of the PCB.

2. The connection structure of the rising terminal to the PCB current carrying capacity according to claim 1, characterized in that: Each of the conductive holes is a through hole, a blind hole or a buried hole.

3. The connection structure of the rising terminal to the PCB current carrying capacity according to claim 1, characterized in that: The PCB includes 4, 6 or 8 copper clad layers.

4. The connection structure of the rising terminal to the PCB current carrying capacity according to claim 1, characterized in that: The diameter of the plug-in hole is larger than the diameter of the conductive hole.

5. A PCB, characterized in that: It includes multiple copper clad layers, and at least one plug-in hole for connecting the fisheye terminal is provided on the PCB. At least one conductive hole is provided around each plug-in hole. The plug-in hole vertically penetrates the PCB and is conductively connected to at least one copper clad layer through the surrounding conductive holes.

6. The PCB according to claim 5, characterized in that: Each of the conductive holes is a through hole, a blind hole or a buried hole.

7. The PCB according to claim 5, characterized in that The PCB includes 4, 6 or 8 copper clad layers.

8. The PCB according to claim 5, wherein: The diameter of the plug-in hole is larger than the diameter of the conductive hole.

9. An automobile, characterized in that: The invention comprises a connection structure for improving the current carrying capacity of a terminal to a PCB according to any one of claims 1 to 4.

10. An automobile, characterized in that: A PCB comprising any one of claims 5 to 8.

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