Soft package battery module with non-welding type tab connecting structure, and connecting method

A soft-pack battery and connection structure technology, which is applied to battery components, batteries, and conductive connections, can solve the problems of inconvenient disassembly and maintenance of lithium battery modules, increased weight of lithium battery modules, and cumbersome production processes, etc., to achieve Improve assembly efficiency and enterprise benefits, improve connection stability, and facilitate the production and operation process

Active Publication Date: 2019-07-19
置富电子技术(东莞)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The lithium battery connected by bolts is easy to cause short circuit, and requires a large number of bolts, which greatly increases the weight of the lithium battery module; the lithium battery module connected by welding, the high temperature generated during the welding process is easy to cause Components with a low melting point are deformed by heat, because they are fixed by welding, which makes it extremely inconvenient to disassemble and maintain the lithium battery module; using tin soldering process requires high-power equipment such as tin furnaces, which wastes more energy, and the production process is more cumbersome

Method used

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  • Soft package battery module with non-welding type tab connecting structure, and connecting method
  • Soft package battery module with non-welding type tab connecting structure, and connecting method
  • Soft package battery module with non-welding type tab connecting structure, and connecting method

Examples

Experimental program
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Embodiment 1

[0030] Such as Figure 1-4 As shown, a pouch battery module with a non-welded tab connection structure includes a battery frame 1, 12 battery cells stacked side by side in the battery frame 1, and four bus bars arranged on the battery frame 1. 4. A connection member 3 is provided between a tab of the battery cell and a corresponding bus bar 4, and the connection member 3 includes a first connection piece 31, a second connection piece 32 and a third connection piece 33 connected in sequence, and the third connection piece 3 The connecting piece 33 is fixedly connected to the bus bar 4, and the tabs are sandwiched between the first connecting piece 31 and the second connecting piece 32. The first connecting piece 31 is provided with three first clamping parts, and the second connecting piece 32 is provided with three There is a second clamping part, and the pole lug is interference-fitted between the first clamping part and the second clamping part through the fastened first con...

Embodiment 2

[0047] The difference from the first embodiment above is that the first engaging part is a through hole 321 formed on the first connecting part 31, the second engaging part is a block protruding toward the first connecting part 31, and the locking part is The shape of the block matches the shape of the through hole 321; when the first connector 31 and the second connector 32 are engaged, there is a gap with a width smaller than the thickness of the lug between the inner wall of the through hole 321 and the outer wall of the block.

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Abstract

The invention discloses a soft package battery module with a non-welding type tab connecting structure; the soft package battery module comprises a battery frame, a plurality of single batteries stacked in the battery frame side by side, and at least two busbars arranged on the battery frame, wherein a connecting component is arranged between one tab of the single battery and the corresponding busbar; the connecting component comprises a first connecting piece, a second connecting piece and a third connecting piece which are connected in sequence; the third connecting piece is fixedly connected with the busbar; the tab is clamped between the first connecting piece and the second connecting piece; the first connecting piece is provided with at least one first clamping portion, and the second connecting piece is provided with at least one second clamping portion; and the tab is in interference fit between the first clamping portion and the second clamping portion through the buckled first connecting piece and second connecting piece. The soft package battery module is reasonable in structure, and the connecting mode of buckling and fixed connection between the connecting components and the tabs is adopted, so that the assembling, detaching and maintaining can be carried out conveniently, the assembling efficiency and the enterprise benefit are improved, and the wiring mode of different series-parallel connection of the lithium battery modules is met.

Description

technical field [0001] The invention relates to the technical field of power batteries, in particular to a pouch battery module with a non-welded tab connection structure and a connection method. Background technique [0002] Lithium-ion batteries have been widely used due to their advantages of large battery capacity and small size, especially in the rapid development of the automotive industry. The lithium battery module is formed by connecting multiple battery cells in series and parallel. The operating voltage of a single soft-pack lithium-ion battery cell is about 2.4-4.5V. After connecting multiple battery cells in series and parallel to form a working voltage of 24V or more lithium battery module. In the production process of the existing lithium battery module, the series and parallel connections of the tabs of the battery cells are generally connected by bolts, soldering or laser welding. The lithium battery connected by bolts is easy to cause short circuit, and r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M2/20H01M50/514
CPCH01M2220/20H01M50/50Y02E60/10
Inventor 朱云李铭政
Owner 置富电子技术(东莞)有限公司
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