Battery control circuit and electronic device
First Claim
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1. A battery control circuit comprising:
- a battery voltage detecting section for detecting a voltage of a batterya resistor and a switching element connected in series being connected to said battery in parallel; and
a battery controlling section for acquiring information relating to a change between the voltage of said battery detected by said battery voltage detecting section when said switching element is ON and the voltage of said battery detected by said battery voltage detecting section when said switching element is OFF by turning on said switching element to allow a current of said battery to flow through said resistor and by turning off said switching element; and
a voltage recovery time measurement section for measuring a time period from a time when said switching element is turned off to a time when the voltage of the battery detected by said battery voltage detecting section recovers to a predetermined voltage value,wherein said battery controlling section determines a residual capacity of said battery based on the information relating to the change in the voltage of said battery, andwherein the information relating to the change is said time period measured by said voltage recovery time measurement section.
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Abstract
A battery control circuit having a battery voltage detecting section for detecting the voltage of a battery includes a resistor and a switching element which are connected in series and which are connected to the battery in parallel, and a battery controlling section for acquiring information relating to a change in the voltage of the battery, which is detected by the battery voltage detecting section, by turning on the switching element to allow a current of the battery to flow through the resistor. The battery controlling section determines the residual capacity of the battery based on the information relating to the change in the voltage of the battery.
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10 Claims
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1. A battery control circuit comprising:
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a battery voltage detecting section for detecting a voltage of a battery a resistor and a switching element connected in series being connected to said battery in parallel; and a battery controlling section for acquiring information relating to a change between the voltage of said battery detected by said battery voltage detecting section when said switching element is ON and the voltage of said battery detected by said battery voltage detecting section when said switching element is OFF by turning on said switching element to allow a current of said battery to flow through said resistor and by turning off said switching element; and a voltage recovery time measurement section for measuring a time period from a time when said switching element is turned off to a time when the voltage of the battery detected by said battery voltage detecting section recovers to a predetermined voltage value, wherein said battery controlling section determines a residual capacity of said battery based on the information relating to the change in the voltage of said battery, and wherein the information relating to the change is said time period measured by said voltage recovery time measurement section. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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Specification