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A metal/air battery system and its rapid start-up method

A technology of air battery and air battery pack, which is applied in the direction of fuel cells, fuel cell additives, fuel cell-type half-cells and primary battery-type half-cells, etc. It can solve capacity reduction, difficulty in use, and difficulty in starting the battery system, etc. problem, to achieve the effect of promoting battery start-up, simple start-up, and preventing loss of dissolution heat

Active Publication Date: 2019-02-19
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to improve the commercialization and practicality of batteries, the batteries need to be easy to operate and maintain, and have good environmental adaptability. Among them, the low-temperature storage, start-up and operation performance of batteries are common problems that restrict metal / air and other fuel cells and lithium-ion batteries. As the ambient temperature drops, the battery system is difficult to start, and the capacity is reduced and it is difficult to use

Method used

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  • A metal/air battery system and its rapid start-up method
  • A metal/air battery system and its rapid start-up method
  • A metal/air battery system and its rapid start-up method

Examples

Experimental program
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Effect test

Embodiment 1

[0030] The battery system is composed of 24 single cells in series. The anode of the single cell is an aluminum alloy plate (), the size is 180mm×160mm×2.5mm, the cathode size of the single cell is 200mm×170mm×2mm, and the distance between the poles of the single cell is 2mm. The two chambers of the liquid storage unit store 2.2kgKOH solid and 6.3L KOH dilute solution (1.7kgKOH+105gNa 2 SnO 3 ), the starting time of the battery is the opening time of the separator regulating device and the dissolution time of the electrolyte, which is 1min,

[0031] As a comparison, using the traditional electrolyte preparation method, the operator wears rubber gloves, goggles, and a mask, then puts the supersaturated KOH solution into the beaker, injects water, stirs with a stirring bar, and after the KOH is dissolved, the electrolyte solution is passed through the injection The liquid port is injected into the battery pack, the liquid injection time is 3.5 minutes, and then the system is st...

Embodiment 2

[0033] The two chambers in the battery liquid storage unit respectively store 2.2kgKOH solid and 6.3L KOH dilute solution (1.7kgKOH+105gNa 2 SnO 3 ), the battery system was placed in a -25°C environment for 2 hours. After the system was completely cooled, the screw device of the injection port was unscrewed, so that the circular telescopic column was in an active state, and the separator with the gasket was separated from the tank wall to communicate with the storage hole. The water in the liquid unit flows to the solid KOH storage cavity, and at the same time, the circular telescopic column can be continuously moved up and down, constantly disturbing the electrolyte in the liquid storage unit, so that the electrolyte is mixed evenly, and then the electrolyte is injected into the battery pack by the liquid pump, and its system The temperature rise and 1.5kW constant power discharge curve are as follows Figure 5 shown. where the solid line represents the voltage and the dash...

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Abstract

A metal / air battery system, comprising a metal / air battery pack, a liquid pump, a heat exchanger, and a liquid storage unit; the liquid inlet of the liquid pump is connected to the liquid storage unit, and the liquid outlet of the liquid pump is connected to the heat exchanger The liquid inlet port of the heat exchanger is connected, and the liquid discharge port of the heat exchanger is connected with the electrolyte injection port of the metal / air battery pack; the electrolyte liquid outlet port of the metal / air battery pack is connected with the liquid storage unit to form a closed loop; There is a partition part inside the liquid storage unit; when the partition part is closed, the interior of the liquid storage unit is divided into two independent sealed cavities. Compared with the prior art, the metal / air battery of the present invention has the advantages of simple start-up of the battery, and the liquid storage unit integrates multiple functions such as raw material storage, electrolyte preparation, electrolyte storage, etc., and the liquid storage unit is especially suitable for low temperature environments. Prepare the electrolyte to prevent the loss of dissolution heat, which helps to heat up the battery system and promote the battery to start.

Description

technical field [0001] The present invention relates to a metal / air battery system, in particular to a metal / air battery system equipped with a liquid storage unit such as aluminum and zinc; the present invention also relates to a quick start-up method for the metal / air battery. Background technique [0002] A metal / air battery is an electrochemical reaction device that uses metal (such as aluminum, zinc, etc.) as the anode fuel, oxygen in the air as the oxidant, and lye as the electrolyte solution. my country's aluminum, zinc and other metals are abundant and cheap, so metal / air batteries have broad application prospects in many fields of mobile power sources such as communication power supplies, field emergency power supplies, lighting power supplies, and reserve power supplies. In order to improve the commercialization and practicality of batteries, the batteries need to be easy to operate and maintain, and have good environmental adaptability. Among them, the low-tempera...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M12/06H01M8/04276H01M8/04225
CPCH01M8/04223H01M8/04268H01M8/04276H01M12/06Y02E60/50
Inventor 孙公权刘敏王二东高建新
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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