Electrical assembly, electrical equipment, electric driving system and vehicle
By setting up a conductive ring between the circuit boards and using fasteners to mechanically and electrically connect, the problem of electrical connection of the circuit board in a narrow gap is solved, and a reliable electrical connection effect is achieved.
Patent Information
- Application Number
- CN202421933921.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-09
- Publication Date
- 2025-07-11
- Estimated Expiration
- 2034-08-09
AI Technical Summary
In the case where the two circuit boards are very close, traditional inter-board connectors cannot be electrically connected efficiently.
通过在紧固件周围设置导电环,利用紧固件将电路板机械连接,并通过导电环实现电连接,导电环焊接到电路板或迹线上以确保电连接。
Reliable electrical connections between circuit boards can be achieved even in a narrow gap, avoiding the space requirements of traditional connectors and being suitable for the electrical connection requirements of narrow spaces.
Smart Images
Figure CN223093139U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to an electrical component, an electrical device, an electric drive system and a vehicle, and more particularly, to an electrical component having circuit boards placed in parallel and corresponding electrical devices, electric drive systems and vehicles. Background Art
[0002] If it is necessary to electrically connect two circuit boards together, an inter-board connector can be used to achieve this. The inter-board connector is electrically connected to the two circuit boards respectively to electrically connect the two circuit boards together. However, for the case where the distance between the two circuit boards is very close, the space between the two circuit boards cannot accommodate the inter-board connector.
[0003] Therefore, it is desirable to propose an electrical component to improve the defects in the above-mentioned prior art. Summary of the Utility Model
[0004] According to a first aspect of the present utility model, there is provided an electrical component, comprising: a first circuit board provided with a first fastening hole; a second circuit board disposed parallel to the first circuit board with a gap therebetween, the second circuit board being provided with a second fastening hole; a fastener passing through the first fastening hole and the second fastening hole to fix the first circuit board relative to the second circuit board; and a conductive ring disposed between the first circuit board and the second circuit board and electrically connected to the first circuit board and the second circuit board, and wherein the conductive ring is disposed around the fastener.
[0005] According to the above embodiment of the present disclosure, the first circuit board is mechanically connected to the second circuit board by the fastener, and the first circuit board is electrically connected to the second circuit board by the conductive ring. In this way, even when the first circuit board and the second circuit board are very close to each other, since the space occupied by the conductive ring is small, the conductive ring can be accommodated in the gap between the first circuit board and the second circuit board to achieve the electrical connection between the first circuit board and the second circuit board.
[0006] The electrical component according to the present disclosure may also have one or more of the following features alone or in combination.
[0007] In some embodiments of the present disclosure, the conductive ring may be welded and fixed to the first circuit board or the second circuit board.
[0008] In some embodiments of the present disclosure, the conductive ring may be welded and fixed to the traces of the first circuit board or the second circuit board.
[0009] In some embodiments of the present disclosure, the fastener may include a screw and a nut. The screw passes through the first fastening hole from the side of the first circuit board opposite to the second circuit board and engages with the nut provided on the side of the second circuit board opposite to the first circuit board.
[0010] In some embodiments of the present disclosure, the nut may have a cylindrical body portion and a boss portion axially extending from the body portion. The radial dimension of the boss portion is smaller than the radial dimension of the body portion, and the boss portion is inserted into the second fastening hole.
[0011] In some embodiments of the present disclosure, a shoulder is formed at the boundary between the body portion and the boss portion, and the nut can be fixedly welded to the second circuit board through the shoulder.
[0012] In some embodiments of the present disclosure, the conductive ring can be fixedly welded to the first circuit board.
[0013] In some embodiments of the present disclosure, the radial dimension of the first fastening hole can be smaller than the radial dimension of the second fastening hole.
[0014] According to the above embodiments of the present disclosure, it is convenient to fixedly weld the nut to the second circuit board through the shoulder.
[0015] In some embodiments of the present disclosure, the gap may not exceed 2 mm.
[0016] According to a second aspect of the present invention, an electrical device is provided, including the electrical component according to the first aspect of the present invention.
[0017] According to a third aspect of the present invention, an electric drive system is provided, including the electrical device according to the second aspect of the present invention or the electrical component according to the first aspect of the present invention. According to a fourth aspect of the present invention, a vehicle is provided, including the electrical device according to the second aspect of the present invention, or including the electrical component according to the first aspect of the present invention, or including the electric drive system according to the third aspect of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 A schematic cross-sectional view of an electrical component according to an embodiment of the present invention is shown.
[0019] Reference Numerals:
[0020] 100 Electrical component
[0021] 110 First circuit board
[0022] 112 First fastening hole
[0023] 120 Second circuit board
[0024] 122 Second fastening hole
[0025] 130 Screw
[0026] 140 Nut
[0027] 142 Main body part
[0028] 144 Boss part
[0029] 146 Shoulder
[0030] 150 Conductive ring
[0031] G Gap Detailed implementation manner
[0032] In order to make the purpose, scheme and advantages of the technical scheme of the present utility model clearer, the technical scheme of the embodiments of the present utility model will be clearly and completely described below in conjunction with the drawings of the specific embodiments of the present utility model. Unless otherwise specified, the terms used herein have the meanings commonly used in the art. The same reference numerals in the drawings represent the same components.
[0033] Figure 1 Fig. shows a schematic cross-sectional view of an electrical component 100 according to an embodiment of the present utility model. The electrical component 100 includes a first circuit board 110 and a second circuit board 120. The first circuit board 110 and the second circuit board 120 are placed in parallel and there is a gap G between the first circuit board 110 and the second circuit board 120. Generally, the first circuit board and the second circuit board can be electrically connected through an inter-board connector. However, in the case where the gap G is very small (for example, less than 2 mm), the space of the gap G may not be able to accommodate the inter-board connector. For this reason, the present utility model proposes an electrical connection method to electrically connect the first circuit board 110 and the second circuit board 120 when the gap G is very small.
[0034] The first circuit board 110 is provided with a first fastening hole 112, and the second circuit board 120 is provided with a second fastening hole 122. The first fastening hole 112 and the second fastening hole 122 are aligned. A screw 130 passes through the first fastening hole 112 and the second fastening hole 122 to fix the first circuit board 110 relative to the second circuit board 120, and a conductive ring 150 is arranged between the first circuit board 110 and the second circuit board 120. The conductive ring 150 is arranged around the screw 130. The conductive ring 150 is electrically connected to the first circuit board 110 and the second circuit board 120 respectively to electrically connect the first circuit board 110 to the second circuit board 120. It should be understood that the present utility model does not aim to limit the mechanical connection method between the first circuit board 110 and the second circuit board 120. In addition to being connected by the screw 130, the first circuit board 110 and the second circuit board 120 can also be connected together by, for example, riveting.
[0035] According to the above arrangement, the first circuit board 110 is mechanically connected to the second circuit board 120 by screws 130, and the first circuit board 110 is electrically connected to the second circuit board 120 by a conductive ring 150. Even when the first circuit board 110 and the second circuit board 120 are very close to each other, since the space occupied by the conductive ring 150 is small, the conductive ring 150 can be accommodated in the gap G between the first circuit board 110 and the second circuit board 120 to achieve electrical connection between the first circuit board 110 and the second circuit board 120.
[0036] Optionally, the conductive ring 150 can be welded and fixed to the first circuit board 110 or the second circuit board 120. In addition, the conductive ring 150 can be welded and fixed to the traces on the first circuit board 110 or the second circuit board 120. The traces can be copper wires used for conduction on the circuit board, and electrical signals on the circuit board can be transmitted via the traces. Optionally, the conductive ring 150 can have a circular cross-section, but the present utility model is not intended to limit the shape of the conductive ring 150, and the conductive ring can also have any other suitable shape such as a rectangle according to specific application requirements. In addition, the conductive ring 150 can be made of copper material, but the present utility model is not intended to limit the material composition of the conductive ring 150, and the conductive ring 150 can also be made of any other suitable conductive material such as iron, aluminum or alloy according to specific application requirements.
[0037] Optionally, the electrical component 100 can further include a nut 140. The screw 130 passes through the first fastening hole 112 from the side of the first circuit board 110 opposite to the second circuit board 120 (e.g., Figure 1 the upper side as shown), and engages with the nut 140 provided on the side of the second circuit board 120 opposite to the first circuit board 110 (e.g., Figure 1 the lower side as shown).
[0038] Optionally, the nut 140 can have a cylindrical body portion 142 and a boss portion 144 axially extending from the body portion 142 (e.g., extending upward as shown), and the radial dimension of the boss portion 144 is smaller than the radial dimension of the body portion 142. The boss portion 144 is inserted into the second fastening hole 122. Figure 1 Optionally, a shoulder 146 is formed at the boundary between the body portion 142 and the boss portion 144 of the nut 140. The nut 140 can be welded and fixed to the second circuit board 120 through the shoulder 146. In other words, the shoulder 146 provides a welding surface for the nut 140 to facilitate welding and fixing the nut 140 to the second circuit board 120.
[0039]
[0040] In the case where the nut 140 is welded and fixed to the second circuit board 120, the conductive ring 150 can be welded and fixed to the first circuit board 110. That is to say, the nut 140 and the conductive ring 150 are respectively welded and fixed to one and the other of the first circuit board 110 and the second circuit board 120. Alternatively, the nut 140 and the conductive ring 150 can also be welded and fixed to the same one of the first circuit board 110 and the second circuit board 120. Optionally, the radial dimension of the first fastening hole 112 (for example, for a circular first fastening hole 112, the radial dimension can be its radius) can be smaller than the radial dimension of the second fastening hole 122 (for example, for a circular second fastening hole 122, the radial dimension can be its radius). In this way, it is convenient for the nut 140 to be welded and fixed to the second circuit board 120 through the shoulder 146. The present utility model is not intended to limit the specific connection manner between the nut 140 and the conductive ring 150 and the first circuit board 110 or the second circuit board 120. Any other suitable connection manner such as threaded connection, riveting, etc. can be adopted according to specific application requirements to fix the nut 140 and the conductive ring 150 to the first circuit board 110 or the second circuit board 120.
[0041] Optionally, the radial dimension of the hole formed by the conductive ring 150 can be relatively large (for example, larger than the radial dimension of the first fastening hole 112), so that the screw 130 does not contact the conductive ring 150, preventing the conductive ring 150 from being electrically connected to the screw 130 and causing an undesired short circuit.
[0042] Although in Figure 1 it is shown that there are two electrical connection paths (i.e., the left electrical connection path and the right electrical connection path) between the first circuit board 110 and the second circuit board 120, the present utility model is not intended to limit the number of electrical connection paths existing between the first circuit board 110 and the second circuit board 120. Different numbers (for example, 1, 3, 5, etc.) of electrical connection paths can be designed between the first circuit board 110 and the second circuit board 120 according to specific application requirements.
[0043] According to another aspect of the present utility model, there is also provided an electrical device, including the electrical component as described above. It should be understood that the electrical device may be an in-vehicle charging device, a power conversion device (for example, a three-phase inverter circuit), etc. As an example, the above-mentioned electrical component may be installed in an in-vehicle charging device. It should be understood that the in-vehicle charging device is used to charge an energy storage device (for example, a battery or a supercapacitor outside the in-vehicle charging device). Among them, the first circuit board 110 may be the main board (OBC board) of the in-vehicle charger, and the second circuit board 120 may be a DC filter board or other types of secondary boards arranged in parallel therewith. The main board receives the filtered alternating current input from the outside (for example, an external charging pile or charging device) and rectifies and transforms it into direct current, and then filters it through the DC filter board 120 to obtain high-quality direct current, and then conveys it to a load or an energy storage device for charging. After the in-vehicle charging device charges the energy storage device, the power conversion circuit generates driving power based on the power from the energy storage device to drive the motor to rotate.
[0044] As the in-vehicle charging device develops towards miniaturization, the relatively narrow space inside the device may cause the gap G between the main board 110 and the secondary board 120 arranged in parallel to be very small, so that a traditional inter-board connector cannot be used to electrically connect the main board 110 and the secondary board 120. However, the electrical connection method proposed by the present utility model can achieve electrical connection between the two boards in the narrow gap G. For example, the gap G may be less than 5 mm, less than 2 mm, or even less than 1 mm.
[0045] According to another aspect of the present utility model, there is also provided an electric drive system. The electric drive system according to the embodiment of the present application may include the electrical device or electrical component as described above.
[0046] According to another aspect of the present utility model, there is also provided a vehicle. The vehicle may include the electrical component, electrical device or electric drive system as described above. The vehicle may be an electrified vehicle, such as a battery electric vehicle (BEV), a hybrid electric vehicle (HEV), a plug-in hybrid electric vehicle (PHEV), a range extended electric vehicle, a fuel cell electric vehicle (FCEV). The vehicle may also be a hydrogen energy vehicle.
[0047] The present invention has been described in detail with reference to preferred embodiments, and those skilled in the art can understand that various modifications and variations can be made to the above specific embodiments without departing from the concept of the present invention. Various technical features and structures proposed by the present invention can also be combined without exceeding the protection scope of the present invention. The protection scope of the present invention is determined by the appended claims.
Claims
1. An electrical component (100), characterized in that, Comprising: A first circuit board (110) provided with a first fastening hole (112); A second circuit board (120) arranged parallel to the first circuit board (110) and having a gap (G) therebetween, the second circuit board (120) being provided with a second fastening hole (122); A fastener passing through the first fastening hole (112) and the second fastening hole (122) to fix the first circuit board (110) relative to the second circuit board (120); A conductive ring (150) arranged between the first circuit board (110) and the second circuit board (120) and being electrically connected to the first circuit board (110) and the second circuit board (120), and Wherein, the conductive ring (150) is arranged around the fastener.
2. The electrical component (100) according to claim 1, characterized in that, The conductive ring (150) is welded and fixed to the first circuit board (110) or the second circuit board (120).
3. The electrical component (100) according to claim 2, characterized in that, The conductive ring (150) is welded and fixed to a trace of the first circuit board (110) or the second circuit board (120).
4. The electrical component (100) according to claim 1, characterized in that, The fastener comprises a screw (130) and a nut (140), the screw (130) passing through the first fastening hole (112) from a side of the first circuit board (110) opposite to the second circuit board (120) and engaging with the nut (140) arranged on a side of the second circuit board (120) opposite to the first circuit board (110).
5. The electrical component (100) according to claim 4, characterized in that, The nut (140) has a cylindrical body portion (142) and a boss portion (144) axially extending from the body portion (142), the radial dimension of the boss portion (144) being smaller than the radial dimension of the body portion (142), and the boss portion (144) being inserted into the second fastening hole (122).
6. The electrical component (100) according to claim 5, characterized in that, A shoulder (146) is formed at the boundary between the body portion (142) and the boss portion (144), and the nut (140) is welded and fixed to the second circuit board (120) through the shoulder (146).
7. The electrical component (100) according to claim 6, characterized in that, The conductive ring (150) is welded and fixed to the first circuit board (110).
8. The electrical component (100) according to claim 6, characterized in that, The radial dimension of the first fastening hole (112) is smaller than the radial dimension of the second fastening hole (122).
9. The electrical component (100) according to claim 1, characterized in that, The gap (G) does not exceed 2 mm.
10. An electrical device, characterized in that, Comprising the electrical component (100) according to any one of claims 1 to 9.
11. An electric drive system, characterized in that, Comprising the electrical device according to claim 10 or the electrical component (100) according to any one of claims 1 to 9.
12. A vehicle, characterized in that, Comprising the electrical device according to claim 10, or comprising the electrical component (100) according to any one of claims 1 to 9, or comprising the electric drive system according to claim 11.