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A kind of cadmium nickel battery soc capacity calculation method

A calculation method and battery technology, applied in the direction of measuring electrical variables, measuring electricity, measuring devices, etc., can solve problems such as inaccurate calculation of SOC capacity, and achieve the effect of eliminating errors

Active Publication Date: 2022-04-22
SICHUAN CHANGHONG ELECTRIC CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to propose a method for calculating the SOC capacity of a nickel-cadmium battery to solve the problem of inaccurate calculation of the SOC capacity of a nickel-cadmium battery

Method used

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  • A kind of cadmium nickel battery soc capacity calculation method
  • A kind of cadmium nickel battery soc capacity calculation method
  • A kind of cadmium nickel battery soc capacity calculation method

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Embodiment Construction

[0034] The invention aims at proposing a method for calculating the SOC capacity of a nickel-cadmium battery to solve the problem of inaccurate calculation of the SOC capacity of the nickel-cadmium battery at present. The present invention uses the ampere-hour integral method to calculate the SOC capacity during the entire life cycle of the nickel-cadmium battery, and adopts corresponding correction measures related to the ambient temperature according to the charge and discharge state of the battery, thereby eliminating errors and obtaining a more accurate remaining capacity, which is a high-efficiency, high-efficiency battery. Safe use provides more effective protection.

[0035] In terms of specific implementation, such as figure 1 Shown, the nickel-cadmium battery SOC capacity calculation method among the present invention comprises the following steps:

[0036] a. After the battery management system is powered on, read the battery system status data at the time of the la...

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Abstract

The invention relates to the technical field of battery management, and discloses a method for calculating the SOC capacity of a nickel-cadmium battery, which solves the problem of inaccurate calculation of the SOC capacity of the nickel-cadmium battery at present. The method includes: after the battery management system is powered on, reading the state data of the battery system when the power was cut off last time; determining the charging and discharging state of the current battery; The SOC is corrected at the specific stage; for the discharge state, after the SOC is calculated by the ampere-hour integral method, the current-voltage-SOC relationship model at the corresponding ambient temperature is used for comparison and correction. The method of the invention can eliminate errors to obtain more accurate remaining capacity, and provide more effective guarantee for efficient and safe use of batteries.

Description

technical field [0001] The invention relates to the technical field of battery management, in particular to a method for calculating the SOC capacity of a nickel-cadmium battery. Background technique [0002] At present, with the gradual increase in the demand for fast and safe rail transit travel methods and the continuous evolution of intelligent driving technology, the technology of intelligent unmanned subway rail trains has gradually received attention. [0003] The premise of intelligence is the real-time collection and transmission of data, and the nickel-cadmium battery pack, which is an important supporting component in the rail train power system, requires a corresponding battery management system (BMS) to realize accurate collection and monitoring of battery data and send it to the train central control system. The system transport provides the underlying data. Accurate estimation of the SOC (state of charge) of the nickel-cadmium battery in the battery managemen...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R31/3828G01R31/3842G01R31/367G01R31/378G01R31/374
CPCG01R31/3828G01R31/3842G01R31/367G01R31/378G01R31/374
Inventor 张宏元黄勇代高强孟令锋郑才君
Owner SICHUAN CHANGHONG ELECTRIC CO LTD
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