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Lithium air battery system

A lithium-air battery, gas technology, applied in secondary batteries, battery electrodes, hybrid battery parts, etc., can solve problems such as performance degradation

Active Publication Date: 2018-10-23
DENSO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since organic and aqueous electrolytes are required on the surface of the air electrode, performance degradation due to volatilization cannot be prevented.

Method used

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Experimental program
Comparison scheme
Effect test

no. 1 Embodiment approach

[0044] Hereinafter, the lithium-air battery system according to the embodiment of the present disclosure will be specifically described. Such as figure 1 As shown in, the lithium-air battery system 1 of this embodiment includes a lithium-air battery 2, a gas supply device 4, a gas exhaust device 5, a humidity control device 6, a control device 7, and the like. Although the illustration is omitted, components necessary for the configuration of the lithium-air battery system 1 such as lead wires and electrode terminals connected to the electrodes of the air battery 2 are also provided.

[0045] Such as figure 2 As shown in, the lithium-air battery 2 (hereinafter referred to as “air battery 2”) includes a positive electrode 20, a negative electrode 21, and a solid electrolyte layer 22. The positive electrode 20 is also called an air electrode.

[0046] The air battery 2 may be a primary battery or a secondary battery. Preferably, it is a secondary battery that can be charged and di...

no. 2 Embodiment approach

[0123] Next, a second embodiment of the present disclosure will be described. In the second embodiment, the description of the same parts as the above-mentioned first embodiment is omitted, and only the different parts will be described.

[0124] Such as Picture 11 As shown in, the lithium-air battery system 1 of the second embodiment includes a temperature adjustment device 9 that adjusts the temperature of the air battery 2. In addition, Picture 11 In this, illustration of the control unit 7 is omitted.

[0125] The temperature adjustment device 9 is provided with a heat medium passage 9a through which the heat medium flows, a heat exchanger 9b for heat exchange between the heat medium and the air battery 2, a pump 9c for pressure-feeding the heat medium, a heat radiator 9d for dissipating heat A heater 9e heated by a heating medium, etc. Furthermore, although illustration is omitted, it is equipped with the flow path switching valve etc. which switch the flow of the heat med...

no. 3 Embodiment approach

[0129] Next, a third embodiment of the present disclosure will be described. In the third embodiment, the description of the same parts as those of the above-described embodiments is omitted, and only the different parts will be described.

[0130] Such as Picture 12 As shown in, the humidity control device 6 of the third embodiment is arranged inside the case 3. That is, the humidity control device 6 is arranged in the same space as the air battery 2. The humidity control device 6 includes a lithium hydroxide aqueous solution and a container containing it. In addition, Picture 12 In the figure, the illustration of the control unit 7 is omitted.

[0131] The lithium hydroxide aqueous solution of the humidity control device 6 becomes a saturated aqueous solution. The lithium hydroxide aqueous solution of the humidity control device 6 is an aqueous lithium compound solution of the same type as the lithium hydroxide aqueous solution constituting the surface ion conductive layer 2...

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PUM

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Abstract

This lithium air battery system is provided with: a lithium air battery (2) that comprises a negative electrode (21) comprising a negative electrode material that is capable of absorbing and desorbinglithium ions, a positive electrode (20) which uses oxygen as a positive electrode active material and comprises a positive electrode material provided with a catalyst (20b) that reduces oxygen, and asolid electrolyte layer (22) which contains a solid electrolyte and is interposed between the negative electrode and the positive electrode; and humidity control units (5, 7) which control the humidity of a gas that contains oxygen and is in contact with at least the positive electrode. The humidity control units control the humidity of the gas in accordance with the temperature of the lithium air battery at least during the operation of the lithium air battery.

Description

[0001] Cross-reference of related applications [0002] This application is based on the Japanese Patent Application No. 2016-53519 filed on March 17, 2016 and the Japanese Patent Application No. 2016-220488 filed on November 11, 2016, and the content of the description is incorporated herein. Technical field [0003] The present disclosure relates to a lithium-air battery system including a lithium-air battery. Background technique [0004] In recent years, with the development of portable devices such as personal computers and mobile phones, the demand for batteries as their power sources is greatly increasing. In addition, with the goal of achieving larger capacity batteries, research on lithium-air batteries that use oxygen in the air as the positive electrode active material has made progress. Li-air batteries have high energy density. [0005] It is reported that the lithium-air battery does not need to be filled with a positive electrode active material, so it shows a very la...

Claims

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Application Information

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IPC IPC(8): H01M12/08H01M10/48
CPCH01M12/08Y02E60/10H01M4/483H01M12/02
Inventor 铃木洋介北川宽平松秀彦
Owner DENSO CORP