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Power battery detection method and device

A power battery and detection method technology, applied in the direction of measuring devices, measuring electricity, measuring electrical variables, etc., can solve the problems of power battery performance that cannot be evaluated, and achieve the effect of accurately determining the degree of aging

Pending Publication Date: 2021-03-12
STATE GRID BEIJING ELECTRIC POWER +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The embodiment of the present invention provides a detection method and device for a power battery, so as to at least solve the technical problem that the power battery performance cannot be evaluated in the prior art

Method used

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  • Power battery detection method and device

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Experimental program
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Embodiment 1

[0036] According to an embodiment of the present invention, an embodiment of a detection method for a power battery is provided. It should be noted that the steps shown in the flow chart of the accompanying drawings can be executed in a computer system such as a set of computer-executable instructions, and, Although a logical order is shown in the flowcharts, in some cases the steps shown or described may be performed in an order different from that shown or described herein.

[0037] figure 1 It is a flow chart of a power battery detection method according to an embodiment of the present invention, such as figure 1 As shown, the method includes the following steps:

[0038] Step S102, acquiring the target capacity fading degree of the power battery.

[0039]Among them, the target capacity decay degree is used to characterize the capacity change of the power battery.

[0040] The power battery in the above steps can be a lead-acid power battery, a nickel-metal hydride power...

Embodiment 2

[0109] According to an embodiment of the present invention, a detection device for a power battery is also provided. The device can execute the method for a power battery in the above embodiment. The specific implementation and preferred application scenarios are the same as those in the above embodiment, and will not be repeated here.

[0110] Figure 11 is a schematic diagram of a detection device for a power battery according to an embodiment of the present invention, such as Figure 11 As shown, the device includes:

[0111] The first acquisition module 1102 is used to acquire the target capacity decay degree of the power battery, wherein the target capacity decay degree is used to represent the capacity variation of the power battery;

[0112] The second acquisition module 1104 is configured to acquire the consistency score value corresponding to the power battery, wherein the consistency score value is used to represent whether the capacity of each single battery in the...

Embodiment 3

[0123] According to an embodiment of the present invention, a computer-readable storage medium is also provided, and the computer-readable storage medium includes a stored program, wherein, when the program is running, the device where the computer-readable storage medium is located is controlled to execute the power battery in the first embodiment above State detection method.

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PUM

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Abstract

The invention discloses a power battery detection method and device. The method comprises the steps that a target capacity attenuation degree of a power battery is acquired, wherein the target capacity attenuation degree is used for representing the capacity variation of the power battery; a consistency score value of the power battery is acquired, wherein the consistency score value is used for representing whether the capacities of the single batteries in the power battery are consistent or not; and based on the target capacity attenuation degree and the consistency score value, the state ofthe power battery is determined, wherein the state of the power battery is used for representing the aging degree of the power battery. The technical problem that the performance of the power batterycannot be evaluated in the prior art is solved.

Description

technical field [0001] The invention relates to the field of power batteries, in particular to a detection method and device for a power battery. Background technique [0002] The standard definition of SOH (battery health, State Of Health) is as follows: under standard conditions, the ratio of the capacity released from the slow charge state to the cut-off voltage at a certain rate and the nominal capacity corresponding to the rate. Therefore, the SOH at different magnifications tends to be different values. If it is necessary to compare batteries in various usage scenarios with the same standard, it is necessary to convert the current SOH of all batteries to the same small rate discharge rate in a certain way, for example, 0.1C full-full discharge is used as the standard of measurement . [0003] However, this kind of working condition can usually only be applied in laboratory equipment, and it is relatively rare in large-scale vehicle applications. The common SOH estim...

Claims

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Application Information

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IPC IPC(8): G01R31/392
CPCG01R31/392
Inventor 潘鸣宇及洪泉孙舟张宝群王伟贤陈振袁小溪李卓群刘祥璐
Owner STATE GRID BEIJING ELECTRIC POWER