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Lead-acid cell grouping method

A lead-acid battery, battery technology, applied in the direction of lead-acid battery, secondary battery repair/maintenance, electricity measurement, etc., can solve the problems of single lagging, single test conditions, short service life, etc.

Inactive Publication Date: 2010-12-22
JIANGSU SHUANGDENG GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Batteries grouped according to the above methods are often prone to falling behind and have a short service life after being used for a period of time. Their common disadvantage is that the test conditions are single, and the consistency of the battery performance of the group cannot be guaranteed. It can only be used as a reference. , but cannot be the final metric for the application

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Connect the fully charged 6-DZM-10 lead-acid battery to the pulse discharge device (18V300A charge and discharge detection device produced by BITRODE, an American company, BITRODE, model: LCN2-300-12), and connect the sampling line.

[0029] Discharge at 7C for 2s and let stand for 30min.

[0030] Discharge with 10C current for 1s and let stand for 30min.

[0031] Discharge with 20C current for 0.2s and let stand for 30min.

[0032] Record the static voltage and the end-of-discharge voltage, see Table 1 for specific data:

[0033] Static voltage and discharge data of each battery in Table 1 Example 1

[0034]

[0035] According to the static voltage difference of 10mV and the discharge end voltage difference of 20mV, the batteries 4, 7, 9, and 12 are combined into a group. The difference between the maximum static voltage and the minimum static voltage of each battery in the matched battery pack is 4mV, which is less than the upper limit of 10mV; the difference be...

Embodiment 2

[0037] Connect the fully charged 6-DZM-10 lead-acid battery to the internal resistance voltage tester (produced by Guangzhou Chenwei Electronic Technology Co., Ltd., model: MP-20-S (200 / 2000mΩ)) on the internal resistance voltage tester, Check battery internal resistance.

[0038] Connect the fully charged 6-DZM-10 lead-acid battery to the pulse discharge device (18V300A charge and discharge detection device produced by BITRODE, an American company, BITRODE, model: LCN2-300-12), and connect the sampling line.

[0039] Discharge with 8C current for 2s.

[0040] Record the discharge status and data, see Table 2 for specific data:

[0041] Static voltage, internal resistance and discharge data of each battery in table 2 embodiment 2

[0042]

[0043] According to internal resistance difference 5mΩ, static voltage difference 10mV, discharge end voltage difference 30mV, capacity difference 20mAh (ie 0.02Ah), energy difference 0.04Wh range, the batteries 3, 6, 10, 14 are matche...

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Abstract

The invention discloses a lead-acid cell grouping method, comprising the following steps: detecting and recording static the voltage of a cell; detecting and recording the internal resistance of the cell; carrying out transient pulse discharging for one or more times on the lead-acid cell at different currents and discharging times; recording one or more data of discharging terminal voltage, discharging volume and discharging energy each time; after discharging detection, grouping the cell according to the difference range of one or more parameters of static voltage, internal resistance, discharging terminal voltage, discharging volume and discharging energy. The grouped cell group has high uniformity and long service life; the method is simple; and the required test device is easily realized and has strong operability.

Description

technical field [0001] The invention belongs to the field of lead-acid batteries, and relates to a lead-acid battery assembly method. Background technique [0002] At present, energy is exhausted, oil prices are soaring, and the global climate is abnormal. Countries are paying more attention to energy security and environmental protection strategically. In this situation, my country also attaches great importance to the development of electric vehicles, and it is listed as a major scientific and technological project in the "Tenth Five-Year Plan" and "Eleventh Five-Year Plan". During the "Tenth Five-Year Plan" period, the electric vehicle industry has made great progress. Electric vehicles are affordable, convenient, stylish, and environmentally friendly, making them an ideal means of transportation for ordinary citizens and receiving strong support from government departments. Batteries are the energy source of electric vehicles, the key components that affect the perform...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/42G01R31/36H01M10/06
CPCY02E60/126Y02E60/10
Inventor 张华
Owner JIANGSU SHUANGDENG GROUP
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