Off-line lithium battery remaining capacity estimation method

A technology of remaining power and lithium batteries, applied in the direction of measuring electrical variables, measuring electricity, measuring devices, etc., can solve the problems of kernel function uncertainty and may not be able to obtain the best results, etc.
CN110501646AInactive Publication Date: 2019-11-26NAT UNIV OF DEFENSE TECH
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Patent Information

Authority / Receiving Office
CN ยท China
Patent Type
Applications(China)
Current Assignee / Owner
NAT UNIV OF DEFENSE TECH
Publication Date
2019-11-26
Estimated Expiration
Not applicable ยท inactive patent

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Abstract

The invention belongs to the field of life prediction, and particularly relates to an off-line lithium battery remaining capacity estimation method. The method comprises the steps of collecting lithium battery state monitoring parameters, and constructing a training set, a verification set and a test set; constructing a heterogeneous kernel function, solving heterogeneous kernel coefficients and hyper-parameters of the heterogeneous kernel function, and training a lithium battery remaining capacity estimation model; verifying the precision of the lithium battery remaining capacity estimation model obtained by training through error analysis; inputting the acquired battery state monitoring parameters of the lithium battery to be measured in each charging and discharging cycle during workinginto the lithium battery remaining capacity estimation model obtained by training so as to estimate the remaining capacity. According to the method, the problem that it is difficult to accurately estimate the remaining capacity in an off-line state is well solved, and a better scheme is provided for the research on the aspects of on-line remaining capacity estimation, service life estimation andanomaly detection of lithium battery products.
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Description

technical field

[0001] The invention belongs to the field of product life estimation, and in particular relates to a method for estimating the remaining battery power through lithium battery state monitoring parameters. Background technique

[0002] Product life estimation refers to the time estimation for a certain product equipment from now until it is completely unusable or unable to complete its specified functions. By estimating the life of the product, the equipment can be repaired and maintained in a timely and necessary manner, the service life of the product can be improved and the occurrence of major safety accidents can be avoided. The remaining power of lithium batteries degrades continuously during use, which is also a key intermediate parameter for calculating general health indicators (SOC, SOH). Therefore, in the field of lithium battery remaining life prediction, the remaining power of lithium battery can also be used to evaluate the battery degradation sta...

Claims

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