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A liquid metal battery charging method and system

A technology of liquid metal battery and charging method, which is applied in the direction of secondary battery charging/discharging, battery circuit device, secondary battery repair/maintenance, etc., and can solve the problems that charging time and charging energy loss cannot be taken into account.

Active Publication Date: 2021-05-18
HUAZHONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of the defects of the prior art, the object of the present invention is to provide a liquid metal battery charging method and system, aiming to solve the technical problem that the existing liquid metal battery charging method cannot take into account the charging time and charging energy loss

Method used

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  • A liquid metal battery charging method and system
  • A liquid metal battery charging method and system
  • A liquid metal battery charging method and system

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Experimental program
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Embodiment

[0137] figure 1 It is a schematic diagram of a liquid metal battery test platform provided by the present invention, including a liquid metal battery cell, a high-temperature furnace, a battery tester, a computer and an AC power supply; the liquid metal battery cell is rated for experimental use A liquid metal battery with a capacity of 20Ah; the high temperature furnace is an artificial intelligence temperature control furnace, which is used to control the temperature of the liquid metal battery; the battery tester is a programmable battery tester, which is used to charge and discharge the liquid metal battery, and Collect parameters such as voltage and current; the computer is used to program control the battery tester, and calculate and analyze the voltage and current collected by the battery tester; the AC power supply is used to provide power for the high temperature furnace and battery tester.

[0138] figure 2It is a block diagram of a liquid metal battery charging sy...

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Abstract

The invention discloses a liquid metal battery charging method and system. The invention belongs to the technical field of liquid metal battery application. The liquid metal battery charging method includes: using Ohm's law to obtain the curve of the DC internal resistance of the liquid metal battery changing with the state of charge; DC internal resistance sequence; based on the DC internal resistance sequence, the genetic algorithm is used to obtain the optimal charging current sequence that minimizes the charging energy loss; the liquid metal battery is charged using the optimal charging current sequence. The invention utilizes the orderly sample clustering method to optimally segment the internal resistance, so that the internal resistance difference within the segment is the smallest and the internal resistance difference between the segments is the largest; the genetic algorithm can be used to quickly converge to the vicinity of the optimal charging current sequence to achieve optimal charging The current sequence charges the liquid metal battery, which can reduce the energy loss during the charging process and improve the charging efficiency.

Description

technical field [0001] The invention belongs to the field of liquid metal battery application technology, and more specifically relates to a liquid metal battery charging method and system. Background technique [0002] Liquid metal battery is a new type of high-temperature energy storage battery. At the working temperature (300℃~700℃), its positive and negative electrode materials and electrolytes are all liquid. The three have different densities and are incompatible with each other. They are automatically divided into three layers. . This all-liquid structure makes liquid metal batteries have the characteristics of fast mass transfer speed, high efficiency, stable performance, long life, simple structure and easy scale-up, which provides a new option for large-scale energy storage. [0003] Charging technology is a key issue in the application process of batteries. A good charging method needs to comprehensively consider various factors such as safety, efficiency and con...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M10/44H02J7/00
CPCH01M10/44H02J7/007Y02E60/10
Inventor 王康丽林靖蒋凯李浩秒
Owner HUAZHONG UNIV OF SCI & TECH
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