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Battery health calibration method for power battery

A power battery and calibration method technology, which is applied in the direction of measuring electricity, measuring electrical variables, measuring devices, etc., can solve problems such as inaccurate calibration of power battery health, and achieve the effect of safe and efficient battery health calibration

Inactive Publication Date: 2018-10-23
QINGDAO TELD NEW ENERGY TECH CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved by the present invention is to provide a battery health calibration method for power batteries in view of the above-mentioned inaccurate calibration of power battery health by the battery management system in the prior art

Method used

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  • Battery health calibration method for power battery
  • Battery health calibration method for power battery
  • Battery health calibration method for power battery

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Experimental program
Comparison scheme
Effect test

no. 1 approach

[0084] First embodiment: the calibration strategy mode is discharge-rest-charge mode.

[0085] refer to image 3 , executing the calibration strategy mode in step S15 includes:

[0086] S1511. The charging and discharging motor performs a discharging operation, and stops discharging after reaching a discharge cut-off condition. Firstly, the charge-discharge machine performs discharge operation on the power battery, and monitors in real time whether the discharge cut-off condition information obtained from the battery management system BMS interaction is reached, and stops discharging when the discharge cut-off condition is reached.

[0087] S1512. The charging and discharging motor enters a static state, and stops power output. After the discharge is stopped, the charging and discharging motor and the battery management system enter a static state. In the static stage, the charging and discharging machine does not output power, the auxiliary source of the charging and disch...

no. 2 approach

[0089] The second embodiment: the calibration strategy mode is the charging-resting-discharging mode.

[0090] refer to Figure 4 , executing the calibration strategy mode in step S15 includes:

[0091] S1521. The charging and discharging machine performs a charging operation, and stops charging when the charging cut-off condition is reached. First, the charging and discharging machine performs charging operation on the power battery, and monitors in real time whether the charging cut-off condition information obtained from the battery management system BMS interaction is reached, and stops charging when the charging cut-off condition is reached.

[0092] S1522. The charging and discharging motor enters a static state, and stops power output. After stopping charging, the charging and discharging motor and the battery management system enter a static state. In the static stage, the charging and discharging machine does not output power, the auxiliary source of the charging a...

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Abstract

The invention relates to a battery health calibration method for a power battery. The method applied to a charging and discharging machine comprises: S11, low-voltage auxiliary source electrificationis carried out after connection to a charging vehicle; S12, a handshake operation is performed and charging information and discharging information are received; S13, parameter configuration information for battery health calibration is received, wherein the parameter configuration information includes a charging configuration parameter and a discharge configuration parameter; S14, a calibration strategy mode is received and parameter configuration is carried out based on the calibration strategy mode; and S15, the calibration strategy mode is executed to complete calibration. According to theinvention, when no electric vehicle is returned to the factory for detection with a special-purpose detection device, the battery health calibration is carried out on the power battery safely and efficiently by using the charging and discharging process of the power battery.

Description

technical field [0001] The invention relates to the field of electric vehicle power battery calibration, and more specifically, relates to a battery health calibration method for a power battery. Background technique [0002] In recent years, with the development of the energy revolution, electric vehicles, as a secondary revolution in the traditional automobile industry, have gradually developed vigorously. According to statistics, by the end of 2017, the number of electric vehicles in the world has exceeded 3.3 million. The number of electric vehicles in my country has ranked first in the world. By the end of 2017, the number of electric vehicles had exceeded 1.6 million. [0003] More and more battery companies and automobile companies have joined the army of electric vehicles, which has accelerated the vigorous development of electric vehicles. However, as more types of electric vehicles enter the market, various problems arise during the use of the vehicles, the core o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/36
Inventor 陈凤琴杨俊伟刘琪黄炎于德翔周强
Owner QINGDAO TELD NEW ENERGY TECH CO LTD
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