Connecting sheet for electrical connection and high-voltage distribution unit

Abstract

The utility model provides a connecting sheet for electric connection and a high-voltage distribution unit. The connecting piece comprises a first connecting part and a second connecting part, wherein the first connecting part is used for welding the connecting piece and the first connecting piece; the end part of the second connecting part is provided with a pin, and the second connecting part is used for connecting the connecting sheet and the second connecting piece; and the body part is connected with the first connecting part and the second connecting part, and the connecting piece is made of a flexible metal material. The connecting sheet for electrical connection provided by the utility model eliminates mechanical stress generated when devices in a high-voltage distribution unit are assembled, compensates position deviation between the devices, and is simple in assembly between the devices.

Description

Technical Field

[0001] This utility model relates to the field of batteries, and in particular to a connecting piece for electrical connection and a high-voltage distribution unit. Background Technology

[0002] Current battery packs use a male-female plug-in connection method to connect various components. While this method is relatively convenient for installation, it has significant drawbacks. During assembly, mechanical stress is generated at the male-female plug-in connection points. Under prolonged conditions, these connections are prone to fatigue breakage or abnormal fretting wear. Ultimately, this leads to a decline in battery performance and may even pose safety hazards.

[0003] In order to overcome the above-mentioned defects in the prior art, there is an urgent need in the field for a connecting piece for electrical connection and a high voltage distribution unit that can eliminate the mechanical stress generated between devices during assembly in the high voltage distribution unit, compensate for the positional deviation between devices, and simplify the assembly between devices. Utility Model Content

[0004] The following provides a brief overview of one or more aspects to offer a basic understanding of them. This overview is not an exhaustive summary of all conceived aspects, nor is it intended to identify key or decisive elements of all aspects, nor to define the scope of any or all aspects. Its sole purpose is to present some concepts of one or more aspects in a simplified form to prepare for the more detailed descriptions that follow.

[0005] As mentioned above, while the existing male-female plug-in connection method is relatively convenient for installation, it has significant drawbacks. During assembly, mechanical stress is generated at the male-female plug-in connection. Under prolonged conditions, the male-female plug-in connection is prone to fatigue breakage or abnormal fretting wear, ultimately leading to a decline in battery performance and even safety hazards.

[0006] To overcome the aforementioned defects in the existing technology, this utility model provides a connecting piece for electrical connection and a high-voltage distribution unit. The connection between devices is achieved by welding the connecting piece, eliminating the mechanical stress generated between devices during assembly in the high-voltage distribution unit. The flexible connecting piece compensates for the positional deviation between devices, and the assembly between devices is simple and can accommodate a certain degree of assembly error.

[0007] Specifically, according to the above-mentioned connecting piece for electrical connection provided by this utility model, the connecting piece includes: a first connecting portion for welding between the connecting piece and the first connecting member; a second connecting portion with pins at its end for connecting the connecting piece and the second connecting member; and a body portion for connecting the first connecting portion and the second connecting portion, wherein the connecting piece is made of a flexible metal material.

[0008] Preferably, in one embodiment of the present invention, the second connecting portion extends from the first side and / or the second side in a vertical direction to form an extension portion, and the end of the second connecting portion and the end of the extension portion are provided with pins.

[0009] Preferably, in one embodiment of the present invention, the second connecting portion is provided with a convex bulge structure at the position opposite to the extension portion to prevent the connecting piece from tilting in the opposite direction.

[0010] Preferably, in one embodiment of the present invention, the width of the body portion is smaller than the width of the first connecting portion.

[0011] Preferably, the top end of the first connecting portion is provided with a bent guide portion for guiding the connecting piece to the welding surface of the first connecting member.

[0012] Preferably, in one embodiment of the present invention, the width of the first connecting portion is greater than the width of the guide portion.

[0013] Preferably, in one embodiment of the present invention, the width of the first connecting portion is greater than the width of the welding surface of the first connecting member.

[0014] Preferably, in one embodiment of the present invention, at least a portion of the pin is tin-plated.

[0015] Preferably, in one embodiment of the present invention, the flexible metal material includes nickel, nickel alloy, or pure copper.

[0016] Preferably, in one embodiment of the present invention, the welding method between the connecting piece and the first connecting member includes laser welding, resistance welding or ultrasonic welding.

[0017] Furthermore, the high-voltage distribution unit provided by this utility model includes a printed circuit board and a relay, wherein the printed circuit board is electrically connected to the matching terminal of the relay through a connecting piece provided in any of the above embodiments. Attached Figure Description

[0018] The above-described features and advantages of this invention can be better understood after reading the following detailed description of the embodiments of this disclosure in conjunction with the accompanying drawings. In the drawings, the components are not necessarily drawn to scale, and components having similar related characteristics or features may have the same or similar reference numerals.

[0019] Figure 1 A schematic diagram of a vertically placed connecting piece according to some embodiments of the present invention is shown; and

[0020] Figure 2 A schematic diagram is shown showing the first connector and the second connector electrically connected by a connecting piece according to some embodiments of the present invention.

[0021] Figure label:

[0022] 100: Connecting piece;

[0023] 110: First connecting part;

[0024] 111: Guiding section;

[0025] 120: Second connecting part;

[0026] 121: First side view;

[0027] 122: Second side view;

[0028] 130: Ontology part;

[0029] 140: Pin;

[0030] 150: Extension;

[0031] 160: Convex hull structure;

[0032] 210: Relay;

[0033] 211: First connector; and

[0034] 220: Second connector. Detailed Implementation

[0035] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments. It should be noted that the aspects described below with reference to the accompanying drawings and specific embodiments are merely exemplary and should not be construed as limiting the scope of protection of the present invention in any way.

[0036] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0037] Furthermore, the terms "upper," "lower," "left," "right," "top," "bottom," "horizontal," and "vertical" used in the following description should be understood as the orientations shown in the relevant paragraphs and accompanying drawings. These relative terms are for illustrative purposes only and do not imply that the described device must be manufactured or operated in a specific orientation; therefore, they should not be construed as limiting the scope of this invention.

[0038] It is understood that although terms such as "first," "second," and "third" may be used herein to describe various components, regions, layers, and / or parts, these components, regions, layers, and / or parts should not be limited by these terms, and these terms are only used to distinguish different components, regions, layers, and / or parts. Therefore, the first component, region, layer, and / or part discussed below may be referred to as the second component, region, layer, and / or part without departing from some embodiments of this utility model.

[0039] As mentioned above, while the existing male-female plug-in connection method is relatively convenient for installation, it has significant drawbacks. During assembly, mechanical stress is generated at the male-female plug-in connection. Under prolonged conditions, the male-female plug-in connection is prone to fatigue breakage or abnormal fretting wear, ultimately leading to a decline in battery performance and even safety hazards.

[0040] To overcome the aforementioned defects in the existing technology, this utility model provides a connecting piece for electrical connection and a high-voltage distribution unit. The connection between devices is achieved by welding the connecting piece, eliminating the mechanical stress generated between devices during assembly in the high-voltage distribution unit. The flexible connecting piece compensates for the positional deviation between devices, and the assembly between devices is simple and can accommodate a certain degree of assembly error.

[0041] The following is for reference. Figure 1 Describe in detail the connecting piece used for electrical connection.

[0042] Figure 1 A schematic diagram of a vertically placed connecting piece according to some embodiments of the present invention is shown. Figure 2A schematic diagram is shown showing the first connector and the second connector electrically connected by a connecting piece according to some embodiments of the present invention.

[0043] Figure 1 The connecting piece 100 shown is placed vertically. The connecting piece 100 used for electrical connection can be made of flexible metal material, such as nickel, nickel alloy or pure copper.

[0044] The connecting piece 100 may include a first connecting part 110, a second connecting part 120, and a body part 130.

[0045] The first connecting portion 110 of the connecting piece 100 can be used for welding between the connecting piece 100 and the first connecting member.

[0046] like Figure 2 As shown, the connecting piece 100 is placed horizontally, and the first connecting member 211 is the mating terminal of the relay 210. The first connecting part 110 can overlap the welding surface of the first connecting member 211. The connecting member 100 can be welded to the first connecting member 211 by welding methods such as laser welding, resistance welding or ultrasonic welding, thereby realizing the electrical connection between the connecting piece 100 and the first connecting member 211.

[0047] Welding can greatly reduce the mechanical stress between the first connector 211 and the connecting piece 100.

[0048] The top end of the first connecting portion 110 may be provided with a bent guide portion 111 for guiding the connecting piece 100 to the welding surface of the first connector 211. The width of the first connecting portion 110 is greater than the width of the guide portion 111.

[0049] The guide portion 111 can be bent upwards or downwards. By using the guide portion 111 of the connecting piece 100, the connecting piece 100 can be guided in the direction of bending towards the guide portion 111.

[0050] like Figure 2 As shown, during the assembly process, the position of the connecting piece 100 and the position of the first connecting member 211 may be in the vertical direction ( Figure 2 There is an assembly error on the Z-axis (as shown). The position of the connecting piece 100 may be lower than that of the first connecting member 211. In this case, by utilizing the upwardly bent guide portion 111 and the flexible deformation of the connecting piece 100 itself, the connecting piece 100 can be guided upward, so that the connecting piece overlaps with the welding surface on the upper side of the first connecting member 211.

[0051] In some embodiments, the width of the first connecting portion 110 may be greater than the width of the welding surface of the first connector 211. When the connecting piece 100 overlaps the welding surface of the first connector 211, there may be an offset in the Y-axis direction. The first connecting portion 120 can ensure sufficient welding area in the overlapping area of ​​the welding surfaces of the connecting piece 100 and the first connector 211 by having a wider coverage area relative to the width of the welding surface of the first connector 211.

[0052] In this way, the welding of the connecting piece 100 and the first connecting member can be achieved without requiring high assembly positioning accuracy.

[0053] The end of the second connecting portion 120 of the connecting piece 100 may be provided with a pin 140 for supporting the second connector. The pin 140 may be used for connecting the connecting piece 100 and the second connector.

[0054] In some embodiments, the second connecting portion 120 may further include a portion extending from the first side 121 and / or the second side 122 toward... Figure 2 An extension 150 is formed extending vertically in the direction shown by the Z-axis. Pins 140 are provided at the ends of the second connecting portion 120 and the extension 150.

[0055] Here, pin 140 can be an SMT (Surface Mount Technology) pin. The SMT pin allows the connector 100 to be attached to the second connector. Preferably, at least a portion of pin 140 is tin-plated, resulting in better adhesion during mounting.

[0056] The connecting piece 100 can be more securely fixed to the second connector by means of the pin 140 supported in the second connector and the second connecting part 120 abutting against the second connector.

[0057] In some embodiments, the second connecting portion 120 may be provided with a convex structure 160 at the position opposite to the extension portion 150 to prevent the connecting piece 100 from tilting in the opposite direction.

[0058] In some embodiments, the direction in which the guide portion 111 bends is on the same side as the direction of the extension portion 150. In this case, the center of gravity of the connecting piece 100 may shift, causing the connecting piece 100 to tip over. By providing the convex hull structure 160 on the opposite side from the extension portion 150, the convex hull structure 160 can be effectively used to suppress the reverse tipping of the connecting piece 100.

[0059] Please continue to refer to this. Figure 1The connecting piece 100 may also include a body portion 130, which may be located between the first connecting portion 110 and the second connecting portion 120 to connect the first connecting portion 110 and the second connecting portion 120.

[0060] The main body 130 can deform during the assembly process of the connecting piece 100 and the first connecting member to compensate for the positional deviation of the first connecting member.

[0061] The width of the body portion 130 can be smaller than the width of the first connecting portion 110. During assembly, the connecting piece 100 can eliminate stress caused by assembly errors through flexible deformation. With a narrower body portion 130, the connecting piece 100 can achieve better flexible deformation.

[0062] Thus, the connecting piece 100 can be connected to the first connecting member through the first connecting part 110, and to the second connecting member through the pin 140 provided at the end of the second connecting part 120, thereby connecting the first connecting member and the second connecting member to realize the electrical connection between the first connecting member and the second connecting member.

[0063] In some embodiments, the first connector may include, in addition to being a low-voltage drive terminal of the relay, a copper busbar structure connected to the high-voltage contacts of the relay. The second connector may be a printed circuit board (PCB) for integrating a battery management controller (BMC). The PCB can be electrically connected to the mating terminals of the relay via the connector 100. For example, the PCB can be electrically connected to the low-voltage drive terminal of the relay via the connector 100 to control the relay and monitor its status. Similarly, the PCB can be connected to the copper busbar structure via the connector 100 to be electrically connected to the high-voltage contacts of the relay via the connector 100 and the copper busbar structure, enabling the PCB to perform functions such as high-voltage sampling.

[0064] like Figure 2 As shown, the first connector 211 is the low-voltage drive terminal of the relay 210. The first connecting portion of the connecting piece 100 is welded to the upper contact surface of the first connector 211, thereby achieving an electrical connection with the first connector 211. The second connector 220 is a printed circuit board. The second connecting portion of the connecting piece 100 abuts against the second connector 220, and the pins are supported inside the second connector 220. The connecting piece 100 is fixed to the second connector 220 by reflow soldering or other methods, and is electrically connected to the second connector 220. Thus, the second connector 220 achieves an electrical connection with the relay 210 through the connecting piece 100, thereby obtaining the high-voltage distribution unit provided by this utility model.

[0065] Those skilled in the art will understand that the above embodiments are merely non-limiting implementations of this utility model, intended to clearly demonstrate the main concept of this utility model and provide some specific solutions that are easy for the public to implement, rather than being used to limit the scope of protection of this utility model. Those skilled in the art can also, based on the above concept and relevant knowledge in the art, connect the connecting piece 100 to the connection terminals of other devices to achieve electrical connections between the devices.

[0066] In summary, the connecting piece and high-voltage distribution unit for electrical connection provided by this utility model can achieve the connection between devices by welding the connecting piece, eliminate the mechanical stress generated between devices during assembly in the high-voltage distribution unit, compensate for the positional deviation between devices by the flexible connecting piece, and simplify the assembly between devices, allowing for a certain degree of assembly error.

[0067] The prior description of this disclosure is provided to enable any person skilled in the art to make or use this disclosure. Various modifications to this disclosure will be apparent to those skilled in the art, and the general principles defined herein may be applied to other variations without departing from the spirit or scope of this disclosure. Therefore, this disclosure is not intended to be limited to the examples and designs described herein, but should be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A connecting piece for electrical connection, characterized in that, The connecting piece includes: The first connecting part is used for welding the connecting piece and the first connecting member; The second connecting portion has pins at its end for connecting the connecting piece to the second connecting member; and... The main body connects the first connecting part and the second connecting part, and the connecting piece is made of flexible metal material.

2. The connecting piece as described in claim 1, characterized in that, The second connecting portion extends from the first side and / or the second side in a vertical direction to form an extension portion, and the end of the second connecting portion and the end of the extension portion are provided with pins.

3. The connecting piece as described in claim 2, characterized in that, The second connecting portion is provided with a convex bulge structure at the position opposite to the extension portion to prevent the connecting piece from tilting in the opposite direction.

4. The connecting piece as described in claim 1, characterized in that, The width of the main body is smaller than the width of the first connecting part.

5. The connecting piece as described in claim 1, characterized in that, The top end of the first connecting part is provided with a bent guide part for guiding the connecting piece to the welding surface of the first connecting member.

6. The connecting piece as described in claim 5, characterized in that, The width of the first connecting part is greater than the width of the guide part.

7. The connecting piece as described in claim 1, characterized in that, The width of the first connecting portion is greater than the width of the welding surface of the first connecting member.

8. The connecting piece as described in claim 1, characterized in that, The pins are at least partially tin-plated.

9. The connecting piece as described in claim 1, characterized in that, The flexible metal material includes nickel, nickel alloys, or pure copper.

10. The connecting piece as described in claim 1, characterized in that, The welding method between the connecting piece and the first connecting member includes laser welding, resistance welding, or ultrasonic welding.

11. A high-voltage distribution unit, characterized in that, It includes a printed circuit board and a relay, wherein the printed circuit board is electrically connected to the mating terminal of the relay via a connecting piece as described in any one of claims 1 to 10.

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