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Early warning method for SOH (state of health) of storage battery

A technology of health state and storage battery, applied in secondary battery repair/maintenance, measurement of electricity, measurement of electrical variables, etc., can solve the problems of not being able to know the health status of the battery, not being able to detect and warn the battery health status, and having no unified standards and specifications

Inactive Publication Date: 2012-06-20
HANGZHOU GOLD ELECTRONICS EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] To sum up, there are the following problems in the prior art: because there is no systematic and complete definition of the battery health status and specific calculation methods, there is no unified standard specification, and it is impossible to carry out standard detection and early warning of the battery health status. As a result, consumers who do not have battery-related professional knowledge cannot learn the health of the battery at all

Method used

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  • Early warning method for SOH (state of health) of storage battery
  • Early warning method for SOH (state of health) of storage battery
  • Early warning method for SOH (state of health) of storage battery

Examples

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Embodiment 1

[0045] A battery health state early warning method, comprising:

[0046] (1) Set the battery cycle number to 0 when it reaches the maximum design cycle number, and set it to 1 when the cycle starts, and normalize the current battery cycle number to obtain the battery cycle number index cyc;

[0047] Set the service time of the battery to 0 when it reaches the maximum designed service time, set it to 1 when it starts to use, and normalize the current battery service time to obtain the battery service time index len;

[0048] When the actual capacity of the battery reaches or is lower than the cut-off use capacity, it is set to 0, when the actual capacity of the battery is greater than or equal to the nominal capacity, it is set to 1, and the current actual capacity of the battery is normalized to obtain the actual capacity index cap of the battery;

[0049]The normalization process of step (1) adopts linear function conversion, battery cycle number index cyc=1-current battery c...

Embodiment 2

[0058] A battery health state early warning method, comprising:

[0059] (1) Set the battery cycle number to 0 when it reaches the maximum design cycle number, and set it to 1 when the cycle starts, and normalize the current battery cycle number to obtain the battery cycle number index cyc;

[0060] Set the service time of the battery to 0 when it reaches the maximum designed service time, set it to 1 when it starts to use, and normalize the current battery service time to obtain the battery service time index len;

[0061] When the actual capacity of the battery reaches or is lower than the cut-off use capacity, it is set to 0, when the actual capacity of the battery is greater than or equal to the nominal capacity, it is set to 1, and the current actual capacity of the battery is normalized to obtain the actual capacity index cap of the battery;

[0062] The normalization processing of step (1) adopts common logarithmic function conversion, and the base of logarithm is 10, a...

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Abstract

The invention relates to an early warning method for the SOH (state of health) of a storage battery. The method comprises the following steps of: (1) carrying out normalization processing on cycle times of the current storage battery to obtain a cycle time index cyc of the storage battery; carrying out normalization processing on use length of the current storage battery to obtain a use length index len of the storage battery; and carrying out normalization processing on the actual capacity of the current storage battery to obtain an actual capacity index cap of the storage battery; (2) adding the cycle time index cyc, the use length index len and the actual capacity index cap of the storage battery according to respective weight to obtain an SOH index; (3) performing early warning when the SOH is lower than an SOH early warning threshold value, and warning the battery to be scrapped at the moment. The early warning method provided by the invention can monitor the SOH of the battery in time and give a warning in time in the long-term use of the battery, so that consumers can clearly know the SOH of the battery without needing professional knowledge.

Description

technical field [0001] The invention relates to a battery health state early warning method, in particular to a battery health state early warning method which allows users to intuitively know the battery health state. Background technique [0002] As human beings pay more attention to their own living environment, understand the huge side effect crisis brought by modern civilization, and redefine and change the understanding of industrial civilization and material civilization in human society in the future, people deeply realize that the development of economy must follow two principles : Environmental protection and rational use of non-renewable resources. Electric bicycles, electric tools, electric vehicles, etc. are social products produced and developed in compliance with these two thematic concepts. They are the result of human beings' self-protection and the necessity of correct handling of the relationship between man and nature. [0003] Batteries are used as back...

Claims

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Application Information

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IPC IPC(8): G01R31/36H01M10/42
CPCY02E60/12Y02E60/10
Inventor 郑益徐剑虹
Owner HANGZHOU GOLD ELECTRONICS EQUIP CO LTD
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