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How to assemble lithium-ion battery modules

A lithium-ion battery and battery module technology, which is applied in the manufacture of secondary batteries, non-aqueous electrolyte batteries, and electrolyte batteries, can solve the problems of time-consuming, labor-intensive, and difficult operation, and achieve simple operation, improved grouping efficiency, and energy saving the effect of time

Active Publication Date: 2016-08-17
HEFEI GUOXUAN HIGH TECH POWER ENERGY
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Some battery manufacturers sort the battery capacity one by one for battery module assembly, but the operation is difficult and time-consuming during the production process

Method used

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  • How to assemble lithium-ion battery modules

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Embodiment Construction

[0018] Take the 10F14 batch capacity of the produced IFP1965140 model 10F14 3000 fully charged batteries with a capacity range of 12.5-13.8Ah, which are required to be combined into 6 parallel modules. The capacity difference between modules is required to be 480mAh. The process and test data are as follows:

[0019] The range requirement between battery modules is 480mAh, and the number of parallel batteries in each battery module is 6, so the capacity gear interval Z=480 / 6=80mAh;

[0020] Test 3,000 batteries according to their capacity, and classify the batteries that meet the capacity range of 12.5-13.8Ah into 16 levels according to the capacity standard of 80mh;

[0021] The selected gears can be combined in the following three sequence forms:

[0022] Gear sequence of Group 1: 1, 4, 7, 10, 13, 16;

[0023] Gear sequence of group 2: 2, 5, 8, 9, 12, 15;

[0024] Gear sequence of group 3: 3, 6, 8, 9, 11, 14;

[0025] And 1+4+7+10+13+16=2+5+8+9+12+15=3+6+9+8+11+14=51; T...

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Abstract

The invention discloses a method for grouping lithium-ion battery modules, which comprises the following steps: (1) battery screening: take a group of lithium-ion batteries with qualified performance, conduct capacity testing, and conduct capacity screening for battery capacity requirements; (2) capacity classification Gear: According to the capacity difference D between the battery modules and the number of parallel batteries in the battery module P, calculate the capacity gear interval Z, and Z=D / P; use the capacity gear interval Z to divide all batteries from small to large capacity N gears and set the gear numbers as 1~N according to the order of natural numbers excluding zero; (3) Capacity matching: divide the battery into N gears according to step (2), and Ai is the gear number of the battery to be taken ;i represents the i-th battery in the module, i≤P; it is required that the sum of gear positions between the modules in the matching group satisfy the following formula: A1(1)+A2(1)+....+AP(1 )=A(2)1+A(2)2+...+A(2)P=...=A(t)1+A(t)2+...+A(t)P Wherein the superscript (t) indicates the tth battery module. The invention has simple calculation and easy operation, and improves the matching efficiency.

Description

technical field [0001] The invention relates to a grouping method of lithium ion battery modules. Background technique [0002] Under the double protection of the support of relevant national policies and the continuous improvement of market application prospects, major breakthroughs have been made in lithium-ion battery technology, battery material research and related battery products, and its application prospects are already very broad: (1) The battery life of electric cars It has met the requirements of urban scooter; (2) electric buses and buses have been popularized in cities; (3) battery safety has also been greatly improved; The worst module in the group, so the key to group matching technology is to solve the consistency of battery modules. [0003] The existing matching technology focuses on solving the consistency of battery packs by strengthening the screening of battery modules. [0004] Some battery manufacturers sort battery capacity one by one for battery ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M10/058H01M10/42
CPCH01M10/058H01M10/4207Y02E60/10Y02P70/50
Inventor 寇晓亮马冬梅贺狄龙
Owner HEFEI GUOXUAN HIGH TECH POWER ENERGY
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