Battery having lifetime indicator
First Claim
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1. A battery, comprising:
- a battery unit including a power source for generating electric power, positive and negative containers connected to said power source, and an insulating member inserted between said positive and negative containers for attaining insulation therebetween; and
a lifetime indicator, provided on said battery unit for indicating the lifetime of said battery unit, comprisingan indication element having first and second electrodes, said indication element having a characteristic for indicating changes in the indication element according to a voltage difference between said first and second electrodes,first connection means for connecting said first electrode to said positive container, andsecond connection means for connecting said second electrode to said negative container,wherein said indication element is made of a liquid crystal material.
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Abstract
An battery comprises an battery unit and a life time indicator for indicating the life time of said battery unit. The life time indicator includes an indication element having a characteristic which indication of the indication element changes according to a voltage impressed onto the same. When voltage drop is caused in the battery unit, the indication of the indication element changes accordingly.
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Citations
8 Claims
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1. A battery, comprising:
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a battery unit including a power source for generating electric power, positive and negative containers connected to said power source, and an insulating member inserted between said positive and negative containers for attaining insulation therebetween; and a lifetime indicator, provided on said battery unit for indicating the lifetime of said battery unit, comprising an indication element having first and second electrodes, said indication element having a characteristic for indicating changes in the indication element according to a voltage difference between said first and second electrodes, first connection means for connecting said first electrode to said positive container, and second connection means for connecting said second electrode to said negative container, wherein said indication element is made of a liquid crystal material.
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2. A battery, comprising:
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a battery unit including a power source for generating electric power, positive and negative containers connected to said power source, and an insulating member inserted between said positive and negative containers for attaining insulation therebetween; and a lifetime indicator, provided on said battery unit for indicating the lifetime of said battery unit, comprising an indication element having first and second electrodes, said indication element having a characteristic for indicating changes in the indication element according to a voltage difference between said first and second electrodes, first connection means for connecting said first electrode to said positive container, and second connection means for connecting said second electrode to said negative container, wherein said indication element is made of an electrochromism element, said electrochromism element including ruthenium diphthalocyanine.
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3. A battery, comprising:
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a battery unit including a power source for generating electric power, positive and negative containers connected to said power source, and an insulating member inserted between said positive and negative containers for attaining insulation therebetween; and a lifetime indicator, provided on said battery unit for indicating the lifetime of said battery unit, comprising an indication element having first and second electrodes, said indication element having a characteristic for indicating changes in the indication element according to a voltage difference between said first and second electrodes, first connection means for connecting said first electrode to said positive container, and second connection means for connecting said second electrode to said negative container, wherein said indication element is made of a viologen derivative.
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4. A battery, comprising:
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a battery unit including a power source for generating electric power, positive and negative containers connected to said power source, and an insulating member inserted between said positive and negative containers for attaining insulation therebetween; and a lifetime indicator, provided on said battery unit for indicating the lifetime of said battery unit, comprising an indication element having first and second electrodes, said indication element having a characteristic for indicating changes in the indication element according to a voltage difference between said first and second electrodes, first connection means for connecting said first electrode to said positive container, and second connection means for connecting said second electrode to said negative container, wherein said indication element is made of an electrophonetic cell. - View Dependent Claims (5, 6)
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7. A battery, comprising:
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a battery unit including a power source for generating electric power, positive and negative containers connected to said power source, and an insulating member inserted between said positive and negative containers for attaining insulation therebetween; and a lifetime indicator, provided on said battery unit for indicating the lifetime of said battery unit, wherein said lifetime indicator is freely mounted to and dismounted from said battery unit and has an external thread portion, while said battery unit has an internal thread portion, said external and internal thread portions being engageable with each other. - View Dependent Claims (8)
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Specification