Invention Application
US20030011372A1 Method and device for checking the charge state of a battery, in particular a rechargeable battery for a cellular mobile telephone
有权
用于检查电池的充电状态的方法和装置，特别是用于蜂窝移动电话的可再充电电池
- Patent Title: Method and device for checking the charge state of a battery, in particular a rechargeable battery for a cellular mobile telephone
- Patent Title (中): 用于检查电池的充电状态的方法和装置，特别是用于蜂窝移动电话的可再充电电池
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Application No.: US10174526Application Date: 2002-06-18
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Publication No.: US20030011372A1Publication Date: 2003-01-16
- Inventor: Jerome Nebon , Louis Tallaron
- Applicant: STMicroelectronics S.A.
- Applicant Address: FR Montrouge
- Assignee: STMicroelectronics S.A.
- Current Assignee: STMicroelectronics S.A.
- Current Assignee Address: FR Montrouge
- Priority: FR0108053 20010619
- Main IPC: G01N027/416
- IPC: G01N027/416
Abstract:
The amount of charge passing through a measurement resistor connected to a rechargeable battery is measured by integrating in an analog manner an overall current. This overall current is equal to the sum of the resistor current and of a reference current that selectively takes one of two opposite values. The results of the integration are compared with a reference voltage, and one of two opposite values of the reference current is selected depending on each result of the comparison. The number of times where the positive opposite value of the reference current is selected furnishes an indication on the amount of charge during the integration time.
Public/Granted literature
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