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Method for realizing tight serial and parallel connection on cylindrical battery cells in battery pack

A technology of battery packs and inner cylinders, which is applied to battery pack parts, circuits, electrical components, etc., can solve problems such as inflexibility, instability, and loose connection between batteries and batteries, so as to reduce the dependence on proficiency, The effect of stable geometry, smooth and not easy to deform

Inactive Publication Date: 2014-03-26
SUZHOU BROADLINE POWER SUPPLY TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] 1. The combination of adjacent batteries is single and inflexible, which is not conducive to the connection of large battery packs
[0005] 2. The connection between the battery core and the battery core is not tight and unstable, and additional external auxiliary materials are needed to make it tightly connected, such as double-sided tape, brackets, etc.
[0006] 3. Butt welding requires high-precision positioning fixtures and skilled workers, which increases production costs and difficulties in disguise

Method used

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  • Method for realizing tight serial and parallel connection on cylindrical battery cells in battery pack
  • Method for realizing tight serial and parallel connection on cylindrical battery cells in battery pack
  • Method for realizing tight serial and parallel connection on cylindrical battery cells in battery pack

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Embodiment Construction

[0020] In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the present invention will be further described below in conjunction with specific illustrations.

[0021] Such as figure 2 As shown, it is the first embodiment of the method for realizing the close series-parallel connection of the cylindrical cells in the battery pack described in the present invention. In this embodiment, firstly, a plurality of cylindrical cells 200 with the same shape are gathered parallel to each other to form multiple rows. Then bridge and fix at the circular cross-section of each electric core 200 by welding connecting piece 210 (here adopting welding connecting piece is a metal nickel strip) and then constitute a battery pack composed of multiple electric cores; wherein single electric core 200 is connected by welding In addition to connecting the adjacent cells 211 of this row, the sheet 210 is also welded with one...

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Abstract

The invention discloses a method for realizing tight serial and parallel connection on cylindrical battery cells in a battery pack. According to the method, firstly, a plurality of battery cells which have the same appearances and are in cylindrical shapes are mutually parallelly gathered for forming several rows, then, bridge connection fixation is carried out at the round cross section part of each battery cell through welding connecting sheets for forming the battery pack consisting of a plurality of battery cells, and the single battery cell is connected with the adjacent electric cells in the current row through the welding connecting sheets and is also welded with one battery cell in the adjacent row, so the welding connecting sheets of the battery cell and other two connected battery cells form obtuse angle or acute angle fixed connection structures, and the two obtuse angle or acute angle fixed connection structures are connected into a Z shape. The method has the advantages that through a plurality of piled and gathered battery cells in the battery pack, the battery cells are adopted and are directly provided with Z-shaped or square-shaped welding connecting sheets, so the battery cells realize the serial and parallel connection conduction on the circuit structure, and in addition, the piled and gathered battery cells cannot easily become loose like solid gum or fixing support frames.

Description

Technical field: [0001] The invention relates to the structure of electric cores in a battery pack, in particular to a method for realizing close series-parallel connection of cylindrical electric cores in a battery pack by improving solder tabs. Background technique: [0002] At present, the DC large-capacity battery pack uses long strip soldering tabs to connect the internal cells. Specifically, it is realized by arranging a plurality of cylindrical electric cores 100 in a row, and then using the elongated soldering piece 110 to perform butt welding with the arranged electric cores. Its style is like figure 1 shown. [0003] However, this connection method has the following disadvantages: [0004] 1. The combination of adjacent battery cells is single and inflexible, which is not conducive to the connection of large battery packs. [0005] 2. The connection between the battery cells is not tight and unstable, and additional external auxiliary materials are needed to ma...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M2/24H01M50/529
CPCH01M50/54Y02E60/10
Inventor 沙建龙
Owner SUZHOU BROADLINE POWER SUPPLY TECH
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