Method for sorting batteries according to battery volt-ampere curve

A technology of volt-ampere curves and volt-ampere characteristic curves, which is applied in the field of sorting batteries and sorting batteries according to the battery volt-ampere curves, can solve the problems of long detection time and large energy consumption, and achieve fast sorting speed, accurate classification, The effect of high sorting quality

Inactive Publication Date: 2005-09-07
韩伟
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention proposes a method for sorting batteries according to the volt-ampere curve of the battery in view of the shortcomings of the above-mentioned prior art that the detection time is too long and consumes a lot of energy. , charge and discharge parameters at different rates, self-discharge rate, maximum power point and other information, which is simple and easy

Method used

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  • Method for sorting batteries according to battery volt-ampere curve
  • Method for sorting batteries according to battery volt-ampere curve
  • Method for sorting batteries according to battery volt-ampere curve

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] 10 AA Ni-MH secondary batteries to be tested are placed in the battery testing equipment, and the discharge test is carried out under the control of the computer, the voltage and current of each battery are collected and recorded, and the internal resistance R and maximum power point P of the battery are calculated. The battery labels are: 1, 2, 3, ..., 10, and the data records are shown in the following table:

[0035] Battery

u OC (mV)

I SC (A)

R (mΩ)

P(W)

1

1235

81.25

15.2

25.10

2

1326

82.36

16.1

27.00

3

1255

82.03

15.3

25.85

4

1213

69.31

17.50

21.12

5

1256

55.58

22.60

18.45

6

1302

102.52

12.70

34.06

7

1163

57.29

20.30

18.21

8

...

Embodiment 2

[0041] 10 AAA Ni-MH secondary batteries to be tested are placed in the battery testing equipment, and the discharge test is controlled by a computer, and the open circuit voltage U of each battery is collected and recorded. OC , short-circuit current I SC , and calculate the internal resistance R of the battery. If the battery labels are: 1, 2, 3, ..., 10, the data records are shown in the following table:

[0042] Battery

u OC (mV)

I SC (A)

R (mΩ)

P(W)

11

1235

57.44

21.5

18.23

12

1326

54.57

24.3

17.58

13

1255

55.04

22.8

17.32

14

1213

45.43

26.7

13.60

15

1256

56.58

22.2

17.59

16

1302

45.05

28.9

14.99

17

1163

39.83

29.2

12.08

18

1252 ...

Embodiment 3

[0049] refer to figure 2 , after the secondary batteries labeled 21, 22, 23, and 24 are placed in the testing equipment for high-current charge and discharge tests, the computer collects and processes the data to form a volt-ampere characteristic curve. If you choose a tested battery AA volt-ampere The characteristic curve is the standard curve IV. Five characteristic points are selected at different current levels i, ii, iii, iv, and v: a, b, c, d, e, and the error range is ±50mV. The voltage of the characteristic points is as follows As shown in the table:

[0050] Unit: (mV)

[0051] a

b

c

d

e

IV

1174

1001

732

480

252

[0052] The test batteries 21, 22, 23, 24 take the corresponding characteristic points: a1, b1, c1, d1, e1, and the voltage values ​​of each point obtained by computer sampling are shown in the following tabl...

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Abstract

This invention discloses one battery volt-ampere characteristic battery filtering method, which uses computer to control the charging process and collect the relative data on the characteristic curve and to filter the battery according to the data combination. The method is of high speed and is suitable for each type of batteries filtering.

Description

technical field [0001] The invention relates to a method for sorting batteries, more specifically to a method for sorting batteries according to the battery volt-ampere curve, and belongs to the field of battery detection. Background technique [0002] With the continuous expansion of the scope of use of secondary batteries, the process of industrialization and scale is also expanding. For one of the important processes in the battery production process-battery sorting, more effective methods are constantly emerging. For example: Chinese patent authorization announcement number CN1044408C, announcement date July 28, 1999, the name of the invention is: method for sorting secondary batteries, and Chinese patent publication number CN1508901A, publication date June 30, 2004, invention creation The title is: method for sorting secondary batteries, all disclose a method for sorting secondary batteries, but these methods all need to carry out a long-time complete secondary battery ...

Claims

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Application Information

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IPC IPC(8): G01R31/36
CPCY02E60/10
Inventor 韩伟
Owner 韩伟
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