System and method for current value detection and mobile terminal

A detection system and current value technology, applied in electric vehicles, measuring current/voltage, current collectors, etc., can solve problems such as low accuracy of current value

Active Publication Date: 2018-12-21
VIVO MOBILE COMM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention provides a current value detection system, method and mobile terminal in order to solve the problem of low accuracy of current value detection

Method used

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  • System and method for current value detection and mobile terminal
  • System and method for current value detection and mobile terminal
  • System and method for current value detection and mobile terminal

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] figure 1 It is a schematic diagram of a current value detection system provided by Embodiment 1 of the present invention, such as figure 1 As shown, the system can include:

[0032] Calibration parameter module 11 , fuel gauge module 12 and detection resistor 13 .

[0033] Wherein, the fuel gauge module 12 can be connected in parallel with the detection resistor 13, that is, the fuel gauge module 12 is electrically connected to both ends of the detection resistor 13 respectively, and the first end of the calibration parameter module 11 can be electrically connected to one end of the battery 14, The second end of the calibration parameter module 11 can be electrically connected to the first end of the detection resistor 13, the third end of the calibration parameter module 11 can be electrically connected to the second end of the detection resistor 13, and the second end of the detection resistor 13 It can be electrically connected with the load 15 .

[0034] Further,...

Embodiment 2

[0042] figure 2 It is a schematic diagram of a current value detection system provided by Embodiment 2 of the present invention, such as figure 2 As shown, the system can include:

[0043] Calibration parameter module 21 , fuel gauge module 22 and detection resistor 23 .

[0044] Wherein, the fuel gauge module 22 can be connected in parallel with the detection resistor 23, the first end of the calibration parameter module 21 can be electrically connected to one end of the battery 24, and the second end of the calibration parameter module 21 can be electrically connected to the first end of the detection resistor 23. The third end of the calibration parameter module 21 can be electrically connected to the second end of the detection resistor 23, and the second end of the detection resistor 23 can be electrically connected to the load 25.

[0045] Specifically, the calibration parameter module 21 may include a first switch 211 , a second switch 212 , a fixed current output m...

Embodiment 3

[0055] image 3 It is a flow chart of the steps of a current value detection method provided in Embodiment 3 of the present invention, and the method can be applied to figure 1 provided by the current value detection system, such as image 3 As shown, the method may include:

[0056] Step 301 , apply a fixed current to the detection resistor at a preset time through the calibration parameter module under the condition that the battery is connected to the load and the current of the battery does not pass through the detection resistor.

[0057] In the embodiment of the present invention, under the condition that the battery is connected to the load and the battery current does not pass through the detection resistor, the method of applying a fixed current to the detection resistor can ensure that only a fixed current flows through the detection resistor, thereby avoiding the subsequent steps. , to determine the accuracy of the first current value.

[0058] Step 302. Determin...

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Abstract

The invention provides a system and a method for current value detection and a mobile terminal, and belongs to the technical field of the mobile terminal. The system comprises a calibration parametermodule, a voltameter module and a detection resistor. The calibration parameter module applies a holding current to the detection resistor when the battery is connected to the load and the current ofthe battery does not pass through the detection resistor at a preset time; the voltameter module determines a first current value flowing through the detection resistor, and determines a current calibration coefficient according to the current value of the holding current and the first current value; the calibration parameter module stops applying the holding current to the detection resistor in the case of ensuring that the battery is in communication with the load and the current of the battery passes through the detection resistor; the voltameter module determines a second current value flowing through the detection resistor, and calculates a target current value based on the second current value and the current calibration coefficient. The detected second current value is corrected bydetermining the current calibration coefficient so that the target current value is closer to a actual value.

Description

technical field [0001] Embodiments of the present invention relate to the technical field of mobile terminals, and in particular to a current value detection system and method and a mobile terminal. Background technique [0002] With the continuous development of mobile terminal technology, mobile terminals are more and more widely used. The battery is an essential component of the mobile terminal, and users tend to be more concerned about the power status of the battery. Correspondingly, in order to facilitate the user to know the battery power usage of the mobile terminal in time, the mobile terminal often needs to monitor the current remaining power of the battery in real time. Specifically, the mobile terminal usually firstly determines the current value input / output by the battery, and then integrates time based on the current value to obtain the remaining power of the battery. [0003] In the prior art, when the mobile terminal determines the input / output current valu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R19/00H02J7/00
CPCG01R19/00H02J7/0077
Inventor 郑乐平
Owner VIVO MOBILE COMM CO LTD
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