Circuit board layout structure and laminated circuit board
By stacking multiple circuit boards along the thickness of the circuit board and using support connectors to achieve mechanical support and electrical connection, the problem of large area occupied by traditional circuit boards is solved, and efficient layout and signal transmission optimization are achieved in a limited space.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HUIZHOU BLUEWAY ELECTRONICS
- Filing Date
- 2025-07-31
- Publication Date
- 2026-07-24
AI Technical Summary
Traditional circuit board layouts occupy a large area, which cannot meet the needs of products with limited structural space.
Design a circuit board layout structure by stacking multiple circuit boards in the thickness direction and forming component space between adjacent circuit boards. Use support connectors to achieve mechanical support and electrical connection, and use pin headers and pin header holes for electrical connection.
It effectively reduces circuit board size, enhances connection reliability, reduces redundant structures, compresses volume, shortens signal transmission distance, and reduces latency and signal attenuation.
Smart Images
Figure CN224555866U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of circuit board design technology, and in particular to a circuit board layout structure and a stacked circuit board. Background Technology
[0002] As electronic devices become thinner, lighter, and more integrated, the layout of circuit boards has an increasingly significant impact on overall product performance and size. Traditional circuit board layouts often employ large single boards or multiple boards arranged side-by-side, with electrical connections achieved through wires and flexible cables. This layout method results in a large circuit board footprint, which cannot meet product space requirements when structural space is limited. Utility Model Content
[0003] To address the aforementioned problems, the purpose of this utility model is to design a circuit board layout structure and a stacked circuit board to reduce the size of the circuit board and make it suitable for products with limited space.
[0004] The objective of this utility model is achieved through the following technical solution: A circuit board layout structure is designed, including at least two circuit boards stacked sequentially at intervals along the thickness direction, forming a component space between adjacent two circuit boards. The component space is provided with a support connector, which includes a support body and a first row of pins and a second row of pins disposed on the support body. The support body includes a first end face and a second end face disposed opposite to each other. The first row of pins and the second row of pins are respectively disposed on the first end face and the second end face. Adjacent two circuit boards are respectively provided with a first row of pin holes and a second row of pin holes corresponding to the first row of pins and the second row of pins. The first row of pins passes through the first row of pin holes and is electrically connected to the circuit in the corresponding circuit board. The second row of pins passes through the second row of pin holes and is electrically connected to the circuit in the corresponding circuit board. The surfaces of adjacent two circuit boards near the support body are respectively abutted against the first end face and the second end face.
[0005] In this solution, the circuit board layout structure changes the traditional arrangement of large single boards or multiple boards side by side. By stacking multiple circuit boards in the thickness direction and forming component space between adjacent circuit boards, the original horizontal expansion space requirement is effectively transformed into vertical integration, which is beneficial for layout in situations where product structure space is limited. The support connector integrates the functions of mechanical support and electrical connection. Specifically, the first and second rows of pins in the support connector are connected to the first and second rows of pins of the two circuit boards respectively by welding, realizing electrical conduction and forming redundant connections at multiple contact points, enhancing the reliability of the connection. In addition, the surfaces of two adjacent circuit boards close to the support body are respectively attached to the first and second end faces, thus forming the support body supporting the two circuit boards. No additional support components are required, which can further reduce the redundant structure of the circuit board and further compress the volume.
[0006] Furthermore, the ends of the first row of needles and the second row of needles protrude from the first row of needle holes and the second row of needle holes, respectively.
[0007] The ends of the first row of pins and the second row of pins protrude from the first row of pin holes and the second row of pin holes, respectively. They are soldered to the pads around the first row of pin holes and the second row of pin holes by soldering, which helps to improve the stability of the connection.
[0008] Furthermore, each of the component spaces is provided with a plurality of the support connectors, which are arranged along the edge region of one of the circuit boards.
[0009] Multiple support connectors are arranged along the edge area of the circuit board to form a distributed support network, which helps to improve the stability of the support connection between two adjacent circuit boards.
[0010] Furthermore, in two adjacent circuit boards, one of them is a circuit board with a rectangular cross-section, and a plurality of the supporting connectors are spaced apart along the edge regions of the three sides of the rectangular cross-section circuit board.
[0011] The shape of the circuit board is based on the structural space design of the product. When one of the circuit boards is designed as a rectangular circuit board, multiple support connectors are spaced apart in the edge areas of the three sides of the circuit board to form a stable support structure.
[0012] Furthermore, in two adjacent circuit boards, the size of the rectangular cross-section circuit board is larger than the size of the other circuit board.
[0013] The two circuit boards are aligned with one side as a reference, with the larger rectangular circuit board serving as a base support layer, providing a more stable foundation for the smaller circuit board above. Connecting terminals can be placed in the non-overlapping areas to avoid interference with the upper circuit board.
[0014] Furthermore, in two adjacent circuit boards, one circuit board is provided with a first component, and the other circuit board is provided with a clearance space corresponding to the position of the first component.
[0015] Clearance spaces allow large components, such as electrolytic capacitors and transformers, to be arranged across layers, avoiding component height conflicts in traditional planar layouts. At the same time, clearance spaces can also provide plug-in clearance for terminals.
[0016] Furthermore, the distance between the first row of needles and the second row of needles is not less than 2.54 mm.
[0017] The 2.54mm pin header spacing is the industry standard. In actual design, a larger spacing can be used depending on the pin diameter of the pin header to match the current carrying capacity.
[0018] Furthermore, the height of the first row of needles and the second row of needles is not less than 3mm.
[0019] Select different pin header heights based on the thickness of different circuit boards so that the pin headers can protrude from the pin header holes.
[0020] Furthermore, a connector is provided between two non-adjacent circuit boards. The connector includes a third row of pins and a fourth row of pins. The third row of pins is electrically connected to one of the two non-adjacent circuit boards, and the fourth row of pins passes through the circuit board between the two non-adjacent circuit boards to be electrically connected to the other of the two non-adjacent circuit boards.
[0021] In this solution, the cross-layer connector directly penetrates non-adjacent circuit boards, bypassing intermediate layer wiring, shortening the high-speed signal transmission distance, and reducing transmission delay and signal attenuation.
[0022] A stacked circuit board is also designed, including the circuit board layout structure described above, wherein one of the two adjacent circuit boards is a control board and the other is a power board.
[0023] Compared with the prior art, the beneficial effects of this utility model are: In this solution, the circuit board layout structure changes the traditional arrangement of large single boards or multiple boards side by side. By stacking multiple circuit boards in the thickness direction and forming component space between adjacent circuit boards, the original horizontal expansion space requirement is effectively transformed into vertical integration, which is beneficial for layout in situations where product structure space is limited. The support connector integrates the functions of mechanical support and electrical connection. Specifically, the first and second rows of pins in the support connector are connected to the first and second rows of pins of the two circuit boards respectively by welding, realizing electrical conduction and forming redundant connections at multiple contact points, enhancing the reliability of the connection. In addition, the surfaces of two adjacent circuit boards close to the support body are respectively attached to the first and second end faces, thus forming the support body supporting the two circuit boards. No additional support components are required, which can further reduce the redundant structure of the circuit board and further compress the volume. Attached Figure Description
[0024] Figure 1 This is a schematic diagram of the layout of two circuit boards according to an embodiment of the present invention.
[0025] Figure 2 This is an exploded view of the layout structure of two circuit boards according to an embodiment of the present invention.
[0026] Figure 3 This is a schematic diagram of the layout of three circuit boards according to an embodiment of the present invention.
[0027] Illustrations: 1. First circuit board; 11. First row of pin holes; 12. Clearance space; 2. Second circuit board; 21. Second row of pin holes; 22. First component; 3. Third circuit board; 4. Component space; 5. Support connector; 51. Support body; 52. First row of pins; 53. Second row of pins; 511. First end face; 512. Second end face; 6. Connector; 61. Third row of pins. Detailed Implementation
[0028] To facilitate understanding of this invention, a more comprehensive description will be provided below with reference to the accompanying drawings. The drawings illustrate preferred embodiments of the invention. However, this invention can be implemented in many different forms and is not limited to the embodiments described herein.
[0029] Example 1: This embodiment provides a circuit board layout structure, including at least two circuit boards stacked at intervals along the thickness direction, such as... Figure 1 and Figure 2As shown, in this embodiment, two circuit boards are provided, namely a first circuit board 1 and a second circuit board 2. A component space 4 is formed between the first circuit board 1 and the second circuit board 2. The component space 4 provides a space for the components mounted on the first circuit board 1 and the second circuit board 2. The component space 4 is provided with a support connector 5. The support connector 5 includes a support body 51 and a first row of pins 52 and a second row of pins 53 disposed on the support body 51. The support body 51 includes a first end face 511 and a second end face 512 disposed opposite to each other. The first row of pins 52 and the second row of pins 53 are respectively disposed on the first end face 511 and the second end face 512. The first circuit board 1 and the second circuit board 2 are respectively provided with first row pin holes 11 and second row pin holes 21 corresponding to the first row pins 52 and the second row pins 53. The first row pins 52 pass through the first row pin holes 11 and are electrically connected to the circuit in the first circuit board 1. The second row pins 53 pass through the second row pin holes 21 and are electrically connected to the circuit in the second circuit board 2. The surfaces of the first circuit board 1 and the second circuit board 2 that are close to the support body 51 are respectively attached to the first end face 511 and the second end face 512.
[0030] In this embodiment, the distance between the first row of pins 52 and the second row of pins 53 of the supporting connector 5 is not less than 2.54 mm, preferably 2.54 mm. The height of the first row of pins 52 and the second row of pins 53 is not less than 3 mm, preferably 3 mm. The height of the supporting body 51 is 10 mm. The supporting body 51 is made of plastic and has a certain strength to provide stable support. The ends of the first row of pins 52 and the second row of pins 53 protrude from the first row of pin holes 11 and the second row of pin holes 21, respectively. They are soldered to the pads around the first row of pin holes 11 and the second row of pin holes 21 by soldering, which helps to improve the stability of the connection. The 2.54 mm pin spacing is a common industry standard. In actual design, a larger spacing can be used according to the pin diameter to match the current carrying capacity. In addition, different pin heights are selected according to the thickness of different circuit boards so that the pins can protrude from the pin holes.
[0031] In this embodiment, the second circuit board 2 is a rectangular cross-section circuit board, and its size is larger than that of the first circuit board 1. Multiple supporting connectors 5 are spaced apart along the edge regions of the three sides of the second circuit board 2. The shape of the circuit board is based on the product's structural space design. When the second circuit board 2 is designed as a rectangular circuit board, the multiple supporting connectors 5 spaced apart along the edge regions of the three sides of the second circuit board 2 form a stable support structure. The two circuit boards are aligned with one side as a reference. The larger second circuit board 2 serves as a basic support layer, providing a more stable base for the smaller first circuit board 1 on top. Plug-in terminals can be installed in non-overlapping areas to avoid interference with the upper first circuit board 1. Additionally, the second circuit board 2 is provided with a first component 22, and the first circuit board 1 has a clearance 12 corresponding to the position of the first component 22. The clearance 12 allows large components, such as electrolytic capacitors and transformers, to be arranged across layers, avoiding height conflicts in traditional planar layouts. The clearance 12 also provides clearance for plug-in terminals.
[0032] It should be noted that the shape and size of the first circuit board 1 and the second circuit board 2 are not limited, and the specific shape design should be adapted to the actual space requirements of the product.
[0033] like Figure 3 As shown, in a modified embodiment, a third circuit board 3 is further provided. The second circuit board 2 and the third circuit board 3 are located on opposite sides of the thickness direction of the first circuit board 1, respectively. A connector 6 is provided between the second circuit board 2 and the third circuit board 3. The connector 6 includes a third row of pins 61 and a fourth row of pins. The third row of pins 61 is electrically connected to the third circuit board 3, and the fourth row of pins passes through the first circuit board 1 to be electrically connected to the second circuit board 2. Specifically, the second circuit board 2 and the third circuit board 3 are respectively provided with pin holes corresponding to the fourth row of pins and the third row of pins 61. The third row of pins 61 and the fourth row of pins pass through the pin holes, and their ends protrude from the pin holes. They are soldered to the pads around the pin holes using a soldering method. In addition, the connector 6 has a structure similar to that of the supporting connector 5. The fourth row of pins has the same height as the second row of pins 53, while the third row of pins 61 is taller. It should also be noted that the first circuit board 1 has through holes for the third row of pins 61 to pass through. The through holes can be large holes or small holes corresponding one-to-one with the pins. The cross-layer connector 6 directly penetrates non-adjacent circuit boards, bypassing intermediate layer wiring, shortening the high-speed signal transmission distance, and reducing transmission delay and signal attenuation.
[0034] It should be noted that the number of circuit boards in this example is not specifically limited and can be set according to actual needs.
[0035] In this embodiment, the circuit board layout structure changes the traditional arrangement of large single boards or multiple boards side by side. By stacking multiple circuit boards in the thickness direction and forming component space between adjacent circuit boards, the original horizontal expansion space requirement is effectively transformed into vertical integration, which is beneficial for layout in situations where product structure space is limited. The support connector 5 integrates the functions of mechanical support and electrical connection. Specifically, the first row of pins 52 and the second row of pins 53 in the support connector 5 are connected to the first row of pins 52 and the second row of pins 53 of the two circuit boards by welding, realizing electrical conduction and forming redundant connections at multiple contact points, thereby enhancing the reliability of the connection. In addition, the surfaces of the two adjacent circuit boards close to the support body are respectively attached to the first end face 511 and the second end face 512, thus forming the support body 51 supporting the two circuit boards. No additional support components are required, which can further reduce the redundant structure of the circuit board and further compress the volume. Example 2:
[0036] This embodiment provides a stacked circuit board, including the circuit board layout structure described above. One of two adjacent circuit boards is a control board, and the other is a power board. The power board includes high-power device circuits such as charging MOSFETs and control circuits, discharging MOSFETs and control circuits, three-terminal fuses and control circuits, and sampling resistors. The control board includes a front-end AFE chip and peripheral circuits, an MCU and peripheral circuits, a secondary protection chip and peripheral circuits, an NTC detection circuit, an LED control circuit, a CAN communication circuit, and an RTC clock circuit. The SCHG, CHG, DSG signals, and sampling resistor detection signals on the control board PCB can control the driving circuits of the charging MOSFETs, discharging MOSFETs, and isolation MOSFETs on the power board, and detect the voltage drop across the sampling resistors via pin headers.
[0037] In the description of this utility model, it should be understood that terms such as "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0038] Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, the inclusion of "first," "second," etc., in a feature may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.
[0039] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A circuit board layout structure, characterized in that, The device includes at least two circuit boards stacked sequentially at intervals along the thickness direction, with a component space formed between adjacent circuit boards. A support connector is provided in the component space. The support connector includes a support body and a first row of pins and a second row of pins disposed on the support body. The support body includes a first end face and a second end face disposed opposite to each other. The first row of pins and the second row of pins are respectively disposed on the first end face and the second end face. Adjacent circuit boards are respectively provided with a first row of pin holes and a second row of pin holes corresponding to the first row of pins and the second row of pins. The first row of pins passes through the first row of pin holes and is electrically connected to the circuitry within the corresponding circuit board. The second row of pins passes through the second row of pin holes and is electrically connected to the circuitry within the corresponding circuit board. The surfaces of adjacent circuit boards closest to the support body are respectively abutted against the first end face and the second end face.
2. The circuit board layout structure according to claim 1, characterized in that, The ends of the first row of needles and the second row of needles protrude from the first row of needle holes and the second row of needle holes, respectively.
3. The circuit board layout structure according to claim 1, characterized in that, Each of the component spaces is provided with a plurality of the support connectors, which are arranged along the edge region of one of the circuit boards.
4. The circuit board layout structure according to claim 3, characterized in that, In two adjacent circuit boards, one of them is a circuit board with a rectangular cross-section, and a plurality of the supporting connectors are spaced apart along the edge regions of the three sides of the rectangular cross-section circuit board.
5. The circuit board layout structure according to claim 3, characterized in that, In two adjacent circuit boards, the size of the rectangular cross-section circuit board is larger than the size of the other circuit board.
6. The circuit board layout structure according to claim 1, characterized in that, In two adjacent circuit boards, one circuit board is provided with a first component, and the other circuit board is provided with a clearance space corresponding to the position of the first component.
7. The circuit board layout structure according to claim 1, characterized in that, The distance between the first row of needles and the second row of needles is not less than 2.54 mm.
8. The circuit board layout structure according to claim 7, characterized in that, The height of the first and second rows of needles is not less than 3mm.
9. The circuit board layout structure according to claim 1, characterized in that, A connector is provided between two non-adjacent circuit boards. The connector includes a third row of pins and a fourth row of pins. The third row of pins is electrically connected to one of the two non-adjacent circuit boards, and the fourth row of pins passes through the circuit board between the two non-adjacent circuit boards to be electrically connected to the other of the two non-adjacent circuit boards.
10. A multilayer circuit board, characterized in that, The circuit board layout structure includes any one of claims 1-9, wherein one of two adjacent circuit boards is a control board and the other is a power board.