Battery health evaluation model construction method, evaluation method and devices

A technology for evaluating models and construction methods, which is applied in the direction of testing and transportation of electrical devices, measuring devices, measuring electricity, etc., and can solve problems such as the inability to obtain battery health status online in real time, low practicability, and restrictions on places of use.

Active Publication Date: 2019-10-18
优必爱信息技术(北京)有限公司
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Problems solved by technology

[0005] In view of this, the purpose of the present invention is to provide a method for constructing a battery health evaluation model, an evaluation method and a device, so as t...

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  • Battery health evaluation model construction method, evaluation method and devices
  • Battery health evaluation model construction method, evaluation method and devices
  • Battery health evaluation model construction method, evaluation method and devices

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Embodiment Construction

[0088] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be described in detail below. Apparently, the described embodiments are only some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other implementations obtained by persons of ordinary skill in the art without making creative efforts fall within the protection scope of the present invention.

[0089] figure 1 It is a flow chart of Embodiment 1 of the construction method of the battery health assessment model of the present invention. Such as figure 1 As shown, a method for constructing a battery health evaluation model in this embodiment may specifically include the following steps:

[0090] S101. Obtain an effective stroke in the working cycle of the preset cycle category of the battery to be tested;

[0091] At present, when evaluating battery p...

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Abstract

The invention relates to a battery health evaluation model construction method, an evaluation method and devices. The method comprises the steps of: obtaining the effective travel in the working cycleof a battery to be detected; determining a segment health estimation value of each working segment; determining a standard correction coefficient corresponding to the cycle type; on the basis of thestandard correction coefficient, correcting the segment health estimation value corresponding to the cycle type, so that the corrected segment health estimation value is obtained; obtaining the firstaverage value of all segment health standard values in each working cycle as the cycle health estimation value of each working cycle; fitting the cycle health estimation value with the cycle time corresponding to each cycle health estimation value, so that a battery health standard model corresponding to the cycle type is obtained; and, on the basis of a pre-set environment correction function, correcting the battery health standard model. Real-time online health state evaluation of a power battery is realized; an evaluation result is provided for a user at any time; a use place is not limited; and the practicability is relatively high.

Description

technical field [0001] The invention relates to the technical field of battery performance evaluation and prediction, in particular to a construction method, evaluation method and device for a battery health degree evaluation model. Background technique [0002] In recent years, the new energy automobile industry has developed rapidly and experienced explosive growth. As the power system of a car, the health of the power battery is an important factor affecting the service life of a new energy electric vehicle. Therefore, the health status of the power battery has become the most concerned issue for car owners. [0003] In the prior art, battery health status is evaluated by parameters such as internal resistance, capacity, charge-discharge rate, and cycle times. The commonly used evaluation method is physical offline test method. The physical off-line test method is mainly to place the power battery in a set test program under a stable condition, conduct physical experime...

Claims

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Application Information

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IPC IPC(8): G01R31/367G01R31/392G01R31/374
CPCG01R31/006G01R31/367G01R31/374G01R31/392
Inventor 王志刚朱瑞
Owner 优必爱信息技术(北京)有限公司
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