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Air cell

An air battery, air electrode technology, applied in secondary batteries, hybrid battery parts, circuits, etc., can solve problems such as the danger of water and metal reactions

Inactive Publication Date: 2012-01-25
TOYOTA JIDOSHA KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] If water enters an air battery that uses metal in the negative electrode in an emergency or emergency, there is a risk of reaction between the water and the metal.

Method used

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no. 2 Embodiment approach

[0099] figure 2 It is a cross-sectional view schematically showing a modified example of the air battery 20 of the present invention. exist figure 2 In , the part that adopts the same structure as the air battery 10 is marked with the same as in figure 1 The same symbols as those used in , and their explanations are omitted appropriately.

[0100] Such as figure 2 As shown, the air battery 20 has a case 21, an electrolytic solution 22, and structures 23 and 23 disposed in the electrolytic solution 22. On the inner wall of the case 21, at a position above the electrolytic solution 22, a hydrogen sensor7. In the air battery 20, the hydrogen sensor 7 is connected to an output unit 9 that outputs an electronic signal when the hydrogen concentration exceeds a threshold value. The inside of the case 21 is a closed space, and the space 26 between the upper surface of the case 21 and the electrolytic solution 22 is filled with oxygen-containing gas. The structure 23 of the ai...

no. 3 Embodiment approach

[0114] image 3 It is a cross-sectional view schematically showing an embodiment example of the air battery 30 of the present invention. image 3 The straight arrows in the indicate the flow direction of the oxygen-containing gas. exist image 3 In , the part that adopts the same structure as the air battery 10 is marked with the same as in figure 1 The descriptions of the same symbols as those used in are omitted appropriately.

[0115] Such as image 3 As shown, the air battery 30 has a flow path 31 through which gas containing oxygen flows, structures 32, 32, . . . , and a case 33 for accommodating them. The casing 33 has an inlet 34 of gas containing oxygen (hereinafter sometimes referred to as "oxygen inlet 34") and an outlet 35 of gas containing oxygen (hereinafter sometimes referred to as "oxygen outlet 35"). The inner wall is provided with a hydrogen sensor 7. This hydrogen sensor 7 is connected to an output unit 9 that outputs an electronic signal when the hydrog...

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Abstract

Disclosed is an air cell wherein entrance of water can be detected quickly. Specifically disclosed is an air cell comprising a power-generating unit including an air electrode to which an oxygen-containing gas is supplied, a negative electrode containing an alkali metal, and an electrolyte layer having an electrolyte for conducting ions between the air electrode and the negative electrode, and a case for housing the power-generating unit. In addition, a hydrogen-detecting means is provided within the case.

Description

technical field [0001] The invention relates to an air battery. Background technique [0002] An air battery is a battery that uses oxygen as a positive electrode active material, and is used by taking in air from the outside during discharge. Therefore, the ratio of the negative electrode active material occupying the battery container can be increased compared to other batteries having positive and negative electrode active materials in the battery. Therefore, in principle, the dischargeable capacity is large, and it is easy to reduce the size and weight. In addition, oxygen used as the positive electrode active material has a strong oxidizing power, so the electromotive force of the battery is relatively high. In addition, oxygen has the characteristics of being a clean material without restriction on resources, and therefore, the environmental load of the air battery is small. As described above, air batteries have many advantages, and are expected to be used in hybri...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M12/08
CPCH01M12/02H01M12/08H01M10/482H01M12/06Y02E60/10
Inventor 水野史教中西真二
Owner TOYOTA JIDOSHA KK
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