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Battery connector and preparation method thereof, battery connecting assembly, battery bank, battery pack and electric vehicle

A battery connection piece, battery connection technology, applied in electric vehicles, conductive connections, electrical component connections, etc., to overcome energy shocks, save manufacturing costs, and ensure connection reliability.

Inactive Publication Date: 2016-07-20
BYD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problem of how to improve the connection performance between the unit cells in the battery module and reduce the production cost. It provides a battery connection sheet and its preparation method as well as a battery connection assembly, a battery pack, a battery pack and an electric battery pack. car

Method used

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  • Battery connector and preparation method thereof, battery connecting assembly, battery bank, battery pack and electric vehicle
  • Battery connector and preparation method thereof, battery connecting assembly, battery bank, battery pack and electric vehicle
  • Battery connector and preparation method thereof, battery connecting assembly, battery bank, battery pack and electric vehicle

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preparation example Construction

[0047] The present invention also provides a method for preparing a battery connecting piece, the method comprising: processing the metal piece to form a first metal piece, a buffer part and a connecting part connected in sequence, and connecting the connecting part to the end of the second metal piece Electromagnetic pulse welding is used for welding.

[0048] According to the present invention, wherein, the end of the connecting part forms a concave first step; the end of the second metal sheet is processed to form a concave second step, and the first step and the second step are interlocked and parallel placed at intervals with a gap of 0.5-4 mm; the first step and the second step are welded by electromagnetic pulse welding.

[0049] According to the present invention, wherein, the buffer portion is formed into a sine wave shape by thinning and stretching.

[0050] According to the present invention, the buffer portion 3 is annealed after being thinned and shaped, and the ...

Embodiment 1

[0067] This embodiment is used to illustrate the battery connection sheet, battery connection assembly and battery pack provided by the present invention.

[0068] (1) One end of the whole metal plate is processed to form a connecting portion with a first step, and the other end is processed as a first metal sheet, and the part between the first metal sheet and the connecting portion that is adjacent to the connecting portion is processed into a sine wave shape And annealed, the hardness is Vickers 22 as a buffer. Processing the second metal sheet to form the end of the second step, such as figure 2 shown. Buckle the first step of the connection part and the second step of the second metal sheet and place them in parallel at an interval of 2mm, then perform electromagnetic pulse welding (welding equipment model PS48-16 / 25, PST company), and the welding energy is 32KJ to obtain the connecting piece ,Such as figure 1 shown. Wherein, the width of the welding connection betwe...

Embodiment 2

[0076] This embodiment is used to illustrate the battery connection sheet, battery connection assembly and battery pack provided by the present invention.

[0077] (1) One end of the whole metal plate is processed to form a connecting portion with a first step, and the other end is processed as a first metal sheet, and the part between the first metal sheet and the connecting portion that is adjacent to the connecting portion is processed into a sine wave shape And annealed, the hardness is Vickers 25 as a buffer. Processing the second metal sheet to form the end of the second step, such as figure 2 shown. Fasten the first step of the connection part and the second step of the second metal sheet and place them in parallel at an interval of 1.5mm, then perform electromagnetic pulse welding (welding equipment model PS48-16 / 25, PST company), the welding energy is 60KJ, and the connection is obtained. slices, such as figure 1 shown. Wherein, the width of the welding connectio...

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Abstract

The invention discloses a battery connector and a preparation method thereof, a battery connecting assembly, a battery bank, a battery pack and an electric vehicle. The connector comprises a first metal sheet, a second metal sheet, a buffer part and a connecting part, wherein the first metal sheet, the buffer part and the connecting part are sequentially connected into an integral structure; the connecting part is connected with the second metal sheet; and the connecting part is connected with the second metal sheet in an atom binding manner. According to the battery connector, the influence of an assembly tolerance in battery assembly is convenient to eliminate; the energy impact caused by external vibration in the actual using process is overcome; the connection reliability between batteries is ensured; the manufacturing cost is low; and simultaneous series and parallel connection of the battery bank can be achieved by the connecting assembly.

Description

technical field [0001] The invention relates to the field of batteries, in particular to a battery connection sheet and a preparation method thereof, a battery connection assembly, a battery pack, a battery pack and an electric vehicle. Background technique [0002] A battery module for an electric vehicle is assembled from multiple batteries, and a connecting piece is required to connect each unit battery. [0003] In the prior art, a hard connection can be used, specifically an integrally formed flat plate, with fixing holes and electrodes on different unit cells positioned to realize the connection of the battery pack. The hard connection can be easily formed by stamping and the processing cost is low, but the hard connection has no buffer part. When assembling the battery pack, once the processing tolerance of the hard connection is large, there will be a problem that it cannot be assembled. What's more serious is that the battery module will be affected by the vibratio...

Claims

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Application Information

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IPC IPC(8): H01R4/58H01R43/02H01M2/20B60L11/18H01M50/503H01M50/509H01M50/514
CPCH01R4/625H01R11/288H01R43/0207H01M2220/20B23K2101/36B23K2103/10B23K2103/12Y02E60/10H01M50/509H01M50/503B23K20/06B23K20/233B23K20/2336H01R31/06
Inventor 彭青波郑卫鑫鲁志佩朱燕朱建华
Owner BYD CO LTD
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