A three-layer lap-welded busbar joint structure to prevent misassembly

Abstract

A three-layer lap-welded busbar connector structure for preventing mis-assembly includes busbar plug-in terminals and clamps. The busbar plug-in terminals include a first terminal plate and a second terminal plate arranged parallel to each other and spaced apart. The plug-in end of the first terminal plate has a first and a second finger slot distributed horizontally along the plugging direction, wider on the left and narrower on the right. The plug-in end of the second terminal plate has a third and a fourth finger slot distributed horizontally along the plugging direction, narrower on the left and wider on the right. The widths of the first and fourth finger slots are the same, as are the widths of the second and third finger slots. The clamps include a first clamping plate and a second clamping plate arranged parallel to each other and spaced apart. The plug-in ends of the first and second clamping plates are connected by a first stiffener that is wider at the front and narrower at the back, and a second stiffener that is narrower at the front and wider at the back. The width of the front section of the first stiffener and the width of the rear section of the second stiffener are the same as the width of the first finger slot, and the width of the rear section of the first stiffener and the width of the front section of the second stiffener are the same as the width of the second finger slot. This solution can prevent accidental mis-assembly and improve product yield and quality.

Description

Technical Field

[0001] This invention relates to the field of busbars, and in particular to a three-layer lap-welded busbar joint structure that prevents mis-installation. Background Technology

[0002] The positive and negative copper busbars used in capacitors for new energy vehicles need to be equipped with two terminals. In conventional products, the finger gaps on the busbar terminals and the ribs on the clips are all of the same width. This often leads to incorrect installation during production and installation, where the clips are inserted into the busbar terminals in the wrong direction. Moreover, this incorrect installation is difficult to detect and is only discovered during connection, requiring rework, which is costly and affects product quality.

[0003] Therefore, in view of the shortcomings of the existing technology, it is necessary to design a three-layer lap-welded busbar joint structure to prevent mis-installation and solve the above problems. Summary of the Invention

[0004] To overcome the shortcomings of the prior art, the present invention aims to provide a three-layer lap welded busbar joint structure to prevent mis-assembly.

[0005] To achieve the above and other related objectives, the technical solution provided by this invention is: a three-layer lap-welded busbar joint structure for preventing mis-installation, comprising: The busbar plug-in terminal is composed of three layers of copper busbars stacked and welded together, and has a first terminal plate and a second terminal plate arranged parallel to each other and spaced apart at the plug-in end. The plug-in end of the first terminal plate has a first finger slot and a second finger slot distributed left and right along the plug-in direction, which are wider on the left and narrower on the right. The plug-in end of the second terminal plate has a third finger slot and a fourth finger slot distributed left and right along the plug-in direction, which are narrower on the left and wider on the right. The width of the first finger slot and the fourth finger slot are the same, and the width of the second finger slot and the third finger slot are the same. The clip is formed by stamping a single piece of sheet metal and includes a first clip plate and a second clip plate arranged parallel to each other and spaced apart. The insertion end of the first clip plate and the insertion end of the second clip plate are connected by a first rib plate that is wider at the front and narrower at the back and a second rib plate that is narrower at the front and wider at the back. The width of the front section of the first rib plate and the width of the rear section of the second rib plate are the same as the width of the first finger gap, and the width of the rear section of the first rib plate and the width of the front section of the second rib plate are the same as the width of the second finger gap. In the assembled state, the front section of the first stiffener is inserted into the first finger gap, the rear section of the first stiffener is inserted into the third finger gap, the front section of the second stiffener is inserted into the second finger gap, the rear section of the second stiffener is inserted into the fourth finger gap, and the first clamping plate and the second clamping plate are attached to the outer side of the first terminal plate and the second terminal plate.

[0006] The preferred technical solution is as follows: the copper busbar includes a first copper busbar, a second copper busbar and a third copper busbar, the first copper busbar and the second copper busbar are respectively welded and fixed to two opposite sides of the third copper busbar; the portion of the first copper busbar extending out of the third copper busbar constitutes the first terminal plate, and the portion of the second copper busbar extending out of the third copper busbar constitutes the second terminal plate.

[0007] The preferred technical solution is as follows: the first finger gap and the second finger gap divide the first terminal plate into three first contact terminals, the third finger gap and the fourth finger gap divide the second terminal plate into three second contact terminals, and the surfaces of the first contact terminals and the second contact terminals are both silver-plated.

[0008] The preferred technical solution is that the clip is made of stainless steel material of model SUS630.

[0009] Due to the application of the above technical solution, the beneficial effects of this invention are as follows: This invention provides a three-layer overlapping welded busbar connector structure to prevent mis-assembly. The finger slots on the busbar plug terminals are designed to be staggered left and right instead of the traditional uniform width finger slots. The stiffeners on the clips are designed to be staggered front and back instead of the traditional uniform width stiffeners. This prevents accidental reverse assembly when the clips are assembled with the busbar plug terminals, thereby improving product yield and product quality. Attached Figure Description

[0010] Figure 1 This is a three-dimensional structural diagram of the busbar connector structure involved in the present invention.

[0011] Figure 2 This is a schematic diagram of the busbar plug-in terminal involved in the present invention.

[0012] Figure 3 This is a schematic diagram of the clip involved in the present invention. Detailed Implementation

[0013] The following specific embodiments illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification.

[0014] Please see Figures 1-3It should be noted that in the description of this invention, the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use. These terms are used only for the convenience of describing the invention and for 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 the invention. Furthermore, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance. The terms "horizontal," "vertical," and "suspended," etc., do not indicate that the component must be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0015] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" 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 communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0016] Example: like Figure 1 As shown, according to an overall technical concept of the present invention, a three-layer lap-welded busbar joint structure for preventing mis-assembly is provided, comprising: The busbar plug-in terminal is composed of three layers of copper busbars stacked and welded together, and has a first terminal plate 11 and a second terminal plate 21 arranged parallel to each other and spaced apart at the plug-in end. The plug-in end of the first terminal plate 11 has a first finger slot 111 and a second finger slot 112 distributed left and right along the plug-in direction and wider on the left and narrower on the right. The plug-in end of the second terminal plate 21 has a third finger slot 211 and a fourth finger slot 212 distributed left and right along the plug-in direction and narrower on the left and wider on the right. The width of the first finger slot 111 and the fourth finger slot 212 is the same, and the width of the second finger slot 112 and the third finger slot 211 is the same. The clip 4 is formed by stamping a single piece of sheet metal and includes a first clip 41 and a second clip 42 arranged parallel to each other and spaced apart. The insertion end of the first clip 41 and the insertion end of the second clip 42 are connected by a first rib 43 that is wider at the front and narrower at the back and a second rib 44 that is narrower at the front and wider at the back. The width of the front section of the first rib 43 and the width of the rear section of the second rib 44 are the same as the width of the first finger gap 111. The width of the rear section of the first rib 43 and the width of the front section of the second rib 44 are the same as the width of the second finger gap 112. In the assembled state, the front section of the first stiffening plate 43 is inserted into the first finger gap 111, the rear section of the first stiffening plate 43 is inserted into the third finger gap 211, the front section of the second stiffening plate 44 is inserted into the second finger gap 112, the rear section of the second stiffening plate 44 is inserted into the fourth finger gap 212, and the first clamping plate 41 and the second clamping plate 42 are attached to the outer side of the first terminal plate 11 and the second terminal plate 21.

[0017] like Figures 1 to 3 As shown, in an exemplary embodiment of the present invention, the copper busbar includes a first copper busbar 1, a second copper busbar 2 and a third copper busbar 3. The first copper busbar 1 and the second copper busbar 2 are respectively welded and fixed to two opposite sides of the third copper busbar 3. The portion of the first copper busbar 1 extending out of the third copper busbar 3 constitutes a first terminal plate 11, and the portion of the second copper busbar 2 extending out of the third copper busbar 3 constitutes a second terminal plate 21.

[0018] like Figures 1 to 3 As shown, in an exemplary embodiment of the present invention, the first finger slot 111 and the second finger slot 112 divide the first terminal plate 11 into three first contact terminals, and the third finger slot 211 and the fourth finger slot 212 divide the second terminal plate 21 into three second contact terminals. The surfaces of the first contact terminals and the second contact terminals are both silver-plated.

[0019] like Figures 1 to 3 As shown, in an exemplary embodiment of the present invention, the clip 4 is made of stainless steel of type SUS630, which has good hardness and can provide good retention of the terminal.

[0020] This application uses a finger-slot structure with staggered widths on the left and right sides and a stiffening plate structure with staggered widths on the front and back to ensure that the clip 4 can only be inserted and assembled with the busbar plug-in terminal in the correct insertion direction. This structure can avoid misassembly problems, thereby improving product yield and product quality.

[0021] Therefore, the present invention has the following advantages: This invention provides a three-layer overlapping welded busbar connector structure to prevent mis-assembly. The finger slots on the busbar plug terminals are designed to be staggered left and right instead of the traditional uniform width finger slots. The stiffeners on the clips are designed to be staggered front and back instead of the traditional uniform width stiffeners. This prevents accidental reverse assembly when the clips are assembled with the busbar plug terminals, thereby improving product yield and product quality.

[0022] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in the present invention should still be covered by the claims of the present invention.

Claims

1. A three-layer lap-welded busbar joint structure for preventing mis-assembly, characterized in that, include: The busbar plug-in terminal is composed of three layers of copper busbars stacked and welded together, and has a first terminal plate and a second terminal plate arranged parallel to each other and spaced apart at the plug-in end. The plug-in end of the first terminal plate has a first finger slot and a second finger slot distributed left and right along the plug-in direction, which are wider on the left and narrower on the right. The plug-in end of the second terminal plate has a third finger slot and a fourth finger slot distributed left and right along the plug-in direction, which are narrower on the left and wider on the right. The width of the first finger slot and the fourth finger slot are the same, and the width of the second finger slot and the third finger slot are the same. The clip is formed by stamping a single piece of sheet metal and includes a first clip plate and a second clip plate arranged parallel to each other and spaced apart. The insertion end of the first clip plate and the insertion end of the second clip plate are connected by a first rib plate that is wider at the front and narrower at the back and a second rib plate that is narrower at the front and wider at the back. The width of the front section of the first rib plate and the width of the rear section of the second rib plate are the same as the width of the first finger gap, and the width of the rear section of the first rib plate and the width of the front section of the second rib plate are the same as the width of the second finger gap. In the assembled state, the front section of the first stiffener is inserted into the first finger gap, the rear section of the first stiffener is inserted into the third finger gap, the front section of the second stiffener is inserted into the second finger gap, the rear section of the second stiffener is inserted into the fourth finger gap, and the first clamping plate and the second clamping plate are attached to the outer side of the first terminal plate and the second terminal plate.

2. The anti-misalignment three-layer lap-welded busbar joint structure according to claim 1, characterized in that: The copper busbar includes a first copper busbar, a second copper busbar, and a third copper busbar. The first copper busbar and the second copper busbar are respectively welded and fixed to two opposite sides of the third copper busbar. The portion of the first copper busbar extending out of the third copper busbar constitutes the first terminal plate, and the portion of the second copper busbar extending out of the third copper busbar constitutes the second terminal plate.

3. The anti-misalignment three-layer lap-welded busbar joint structure according to claim 1, characterized in that: The first and second finger gaps divide the first terminal block into three first contact terminals, and the third and fourth finger gaps divide the second terminal block into three second contact terminals. The surfaces of the first and second contact terminals are both silver-plated.

4. The anti-misinstallation three-layer lap-welded busbar joint structure according to claim 1, characterized in that: The clip is made of stainless steel material of type SUS630.

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