Battery remaining capacity detecting method of mobile terminal and device thereof

A technology of battery remaining power and detection method, which is applied to measuring devices, measuring electrical variables, measuring electricity, etc., can solve the problems of occupying circuit board space and calculating the high cost of remaining power, and achieve the effect of reducing costs and saving space

Inactive Publication Date: 2016-03-02
HUIZHOU TCL MOBILE COMM CO LTD
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Problems solved by technology

[0004] In view of the shortcomings of the above-mentioned prior art, the purpose of the present invention is to provide a method and device for detecting the remaining battery power of a mobile terminal, so as to solve the problem that the existing mobile terminal uses a coulomb counter to calculate the remaining power, which is expensive and takes up space on the circuit board. The problem

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  • Battery remaining capacity detecting method of mobile terminal and device thereof
  • Battery remaining capacity detecting method of mobile terminal and device thereof
  • Battery remaining capacity detecting method of mobile terminal and device thereof

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Embodiment Construction

[0036] The invention provides a method and a device for detecting the remaining battery power of a mobile terminal. In order to make the object, technical solution and advantages of the present invention more clear and definite, the present invention will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0037] see figure 1 , which is a schematic diagram of a battery equivalent circuit of an existing mobile terminal, figure 1 Among them, R1 is the internal resistance of the battery, V0 is the open circuit voltage of the battery, V1 is the voltage on the positive pole of the battery, Rt is the battery thermistor and is connected in series between the battery temperature pin BT and the negative pole B-. When the battery is not connected to any load, the positive pole B+ and the ne...

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Abstract

The invention discloses a battery remaining capacity detecting method of a mobile terminal and a device thereof. The battery remaining capacity detecting method includes the following steps that: A, the open-circuit voltage of a battery is calculated according to the temperature of the battery, the value of the internal resistance of the battery and the current of the battery at present; and B, a preset temperature, voltage and capacity relationship matrix is queried according to the temperature of the battery and the open-circuit voltage, so that a corresponding battery remaining capacity percentage can be obtained. With the battery remaining capacity detecting method of the mobile terminal and the device thereof of the invention adopted, the battery remaining capacity percentage can be still obtained without a coulombmeter; cost can be decreased; space can be saved for a circuit board; and the problems of high cost and space occupation of the circuit board of an existing mobile terminal which are caused by a situation that the existing mobile terminal can accurately display battery remaining capacity percentages assuredly only with an expensive coulombmeter required can be solved.

Description

technical field [0001] The present invention relates to the technical field of mobile terminals, in particular to a method and device for detecting remaining battery power of a mobile terminal. Background technique [0002] At present, all mobile terminals have a power display function to prompt the user of the remaining power percentage of the battery. In the prior art, the battery power is accurately calculated through the coulomb meter (or also known as the fuel gauge) according to the amount of the reacted substance on the electrode (consumed power) through the circuit, and then the total battery power is subtracted The difference of the consumed power is divided by the total battery power to get the percentage of remaining power. Although the calculation result of the above method is accurate, the coulomb meter is expensive and takes up space on the mobile terminal circuit board. [0003] Thereby prior art still needs to improve and improve. Contents of the invention...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/36
Inventor 俞斌杨维琴
Owner HUIZHOU TCL MOBILE COMM CO LTD
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