Remaining battery energy indicating instrument
First Claim
1. A remaining battery energy indicating instrument comprising:
- a detecting means for detecting a predetermined discharged time and a predetermined fully charged time of a battery for storing electric energy;
an integrating means for integrating the amount of electric energy which has been charged and discharged, said integrating means utilizing an integrated value corresponding to an amount of electric energy stored in the battery at the predetermined discharged time and the predetermined fully charged time when the predetermined discharged time and the predetermined fully charged time are reached; and
a display means for displaying the absolute value of a remaining amount of electric energy stored in the battery based on an output signal from said integrating means.
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Accused Products
Abstract
A remaining battery energy indicating instrument with a reduced integration error even if a battery is repeatedly charged and discharged without being fully discharged. A remaining battery energy indicating instrument has a detecting member for detecting a predetermined discharged time and a predetermined fully charged time of a battery for storing electric energy, an integrating member for integrating electric energy which has been charged and discharged, while regarding as an integrated value a value corresponding to an amount of electric energy stored in the battery at the predetermined discharged time and the predetermined fully charged time when the predetermined discharged time and the predetermined fully charged time are reached. A display device is provided for displaying the absolute value of a remaining amount of electric energy stored in the battery based on an output signal from said integrating member.
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Citations
20 Claims
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1. A remaining battery energy indicating instrument comprising:
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a detecting means for detecting a predetermined discharged time and a predetermined fully charged time of a battery for storing electric energy; an integrating means for integrating the amount of electric energy which has been charged and discharged, said integrating means utilizing an integrated value corresponding to an amount of electric energy stored in the battery at the predetermined discharged time and the predetermined fully charged time when the predetermined discharged time and the predetermined fully charged time are reached; and a display means for displaying the absolute value of a remaining amount of electric energy stored in the battery based on an output signal from said integrating means. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A remaining battery energy indicating instrument comprising:
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a detector detecting a predetermined discharged time and a predetermined fully charged time of a battery for storing electric energy; an integrator integrating the amount of electric energy which has been charged and discharged, said integration means utilizing an integrated value corresponding to an amount of electric energy stored in the battery at the predetermined discharged time and the predetermined fully charged time when the predetermined discharged time and the predetermined fully charged time are reached; and a display device displaying the absolute value of a remaining amount of electric energy stored in the battery based on an output signal from said integrator. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. A method of detecting a remaining battery energy comprising the following steps:
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detecting a predetermined discharged time and a predetermined fully charged time of a battery for storing electric energy; storing as an integrated value corresponding to an amount of electric energy stored in the battery at the predetermined discharged time and the predetermined fully charged time when the predetermined discharged time and the predetermined fully charged time are reached; integrating electric energy which has been charged and discharged based on said integrated value; generating an output signal from said integrating of said electric energy; and displaying the absolute value of a remaining amount of electric energy stored in the battery based on said output signal from said integrating of said electric energy. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification