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A kind of SOH detection method and device

A detection method and power battery technology, which can be applied to measuring devices, testing electrical devices in transportation, measuring electricity, etc., can solve the problems of inaccurate SOH detection methods, and achieve the effect of prolonging service life and accurate evaluation.

Active Publication Date: 2020-09-29
ZHENGZHOU YUTONG BUS CO LTD
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Problems solved by technology

[0005] The purpose of this application is to provide a SOH detection method and device to solve the inaccurate problem of existing SOH detection methods

Method used

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  • A kind of SOH detection method and device
  • A kind of SOH detection method and device
  • A kind of SOH detection method and device

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Experimental program
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Embodiment Construction

[0024] SOH detection method embodiment:

[0025] The SOH detection method proposed in this embodiment, such as figure 1 shown, including the following steps:

[0026] 1) Collect user's historical behavior habit data.

[0027] The user’s historical behavior and habit data of the vehicle are uploaded to the background operator through the network. The historical behavior and habit data include: the storage time of the power battery, the SOC of the power battery before the storage, and the temperature of the power battery during the storage, collectively referred to as the storage time. It also includes the charge and discharge rate during operation, the number of charge and discharge cycles, and the temperature of the power battery during operation, which are collectively referred to as the historical data during operation; since the charge and discharge rate = current / rated capacity of the power system, in order to obtain the operation When the charge and discharge rate, need...

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Abstract

The invention relates to an SOH detection method and device, belonging to the technical field of lithium ion batteries. The method includes: collecting the user's historical behavior habit data, the historical behavior habit data includes the historical data of the power battery when it is put on hold and the historical data of the power battery when it is in operation; according to the historical data of the power battery when it is put on hold within a set period of time, the power is obtained. The storage capacity loss rate of the battery within the set time period; according to the historical data of the power battery operation within the set time period, the operating capacity loss rate of the power battery within the set time period is obtained; the storage capacity loss rate and the operation The superposition of the capacity loss rate is the capacity loss rate of the power battery within the set time period. The present invention realizes the evaluation of the life of the power battery used by the user through the user's historical behavior habit data, making the evaluation more accurate, and the evaluation can be used for the analysis of the background operator, and in the case that the power battery needs maintenance, timely Notify the user.

Description

technical field [0001] The invention relates to an SOH detection method and device, belonging to the technical field of lithium ion batteries. Background technique [0002] As an emerging technology, new energy vehicles are developing very rapidly. Power batteries, as the core components of new energy vehicles, are the focus of attention of the entire new energy industry. With the gradual increase in the number of new energy vehicles, the life evaluation of new energy vehicle power batteries has become The focus and problems of industry research and development. [0003] At present, the SOH evaluation of new energy vehicle power batteries generally adopts the following methods: 1. With the help of charging and discharging equipment, the health status of the battery is calibrated under constant environmental conditions. Generally, the charging and discharging life test is performed at 1C / 1C according to the national standard; 2. 1. Determine the total AH of the battery throu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R31/392G01R31/367G01R31/387G01R31/00
CPCG01R31/392G01R31/367G01R31/387G01R31/006
Inventor 赵世超孙艳艳张涛周雪松张立科
Owner ZHENGZHOU YUTONG BUS CO LTD
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