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Method for manufacturing lead-acid battery pack for electric vehicles

A manufacturing method and technology for electric vehicles, applied in the field of automotive power, can solve the problems of insufficiency and low precision, and achieve the effect of assembly safety and consistency guarantee

Inactive Publication Date: 2011-01-19
CHERY AUTOMOBILE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, at present, due to the overall low precision of the manufacturing equipment in the lead-acid battery industry, it cannot meet the requirements of being directly mounted on the vehicle after being grouped.

Method used

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  • Method for manufacturing lead-acid battery pack for electric vehicles
  • Method for manufacturing lead-acid battery pack for electric vehicles

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Experimental program
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Effect test

Embodiment Construction

[0017] The present invention will be specifically described below in conjunction with the accompanying drawings.

[0018] First, carry out 2-3 charge and discharge cycles for the lead-acid single batteries 1 that need to be grouped according to the uniform charge and discharge parameters, and then fully charge the single battery 1 in the standard charging mode, and select the single battery with the largest capacity difference No more than 2%, and a single battery 1 with an open circuit voltage difference of less than 0.01V / cell under full charge should be assembled. The grouping is carried out according to a set rule. If the grouping can be carried out according to the existing test conclusions and the measured capacity, the voltage of the battery pack is generally lower than 14V, which is a safe voltage. Operation is non-hazardous.

[0019] refer to figure 1 , The material used for the shell of a single battery is ABS with good insulation effect, high strength, high heat d...

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PUM

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Abstract

The invention discloses a method for manufacturing a lead-acid battery pack for electric vehicles, comprising the following steps: (1) selecting monomer batteries to be matched; (2) grouping the monomer batteries according to the measurement volume based on a set rule; and (3) connecting the grouped monomer batteries in series to form the battery pack. The method is safe and reliable in battery assembly, can ensure the consistency after battery matching, can better give play to the functions of the batteries and is suitable for the electric vehicles in batch.

Description

technical field [0001] The invention belongs to the field of automobile power, in particular to a method for manufacturing a lead-acid battery pack for an electric automobile. Background technique [0002] In the existing electric vehicles, considering their cruising range and driving speed, when selecting the operating voltage of the motor, they generally use high voltage, ranging from 200V to 400V, and the highest voltage has reached 600V. In this way, due to the high power supply voltage, the traditional battery pack manufacturing method has great potential safety hazards in the production process. [0003] As an urban means of transportation, the low-voltage drive system (48-72V) using lead-acid battery packs has been widely used due to its wide requirements on safety, economy and environment. [0004] However, at present, due to the overall low precision of the manufacturing equipment in the lead-acid battery industry, it cannot meet the requirements of being directly ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/12H01M10/42H01M2/02H01M50/121H01M50/249H01M50/258H01M50/503H01M50/51H01M50/521
CPCY02T10/7016Y02E60/126Y02E60/10Y02P70/50
Inventor 白海军
Owner CHERY AUTOMOBILE CO LTD