Electric quantity measurement method, measuring circuit and method of calibration coefficient, and terminal device

Abstract

The invention, which relates to the field of the electronic technology, discloses an electric quantity measurement method, a measuring circuit and method of a calibration coefficient, and a terminal device. The measuring circuit for an electric quantity calibration coefficient comprises a fixed-value resistor and a resistor connector that are arranged on the circuit board. A first pin group of the battery connector is connected with a positive electrode of a battery electrically; and a second pin group is connected with a negative electrode of the battery electrically. When the battery is connected to the battery connector electrically, a first end of the fixed-value resistor is connected with the negative electrode of the battery electrically by the second pin group and a second end of the fixed-value resistor is grounded. The first end and the second end enable test points arranged at the circuit board to be led out respectively; and the test points are used for contact with test heads of a constant-current source or a test instrument. Compared with the prior art, the measuring circuit enables the current flowing through the fixed-value resistor to be calibrated and the capacity of the battery to be tested, so that the damage to the circuit board can be avoided and the current calibration precision as well as the accuracy of the electric quantity testing result can be guaranteed.

Description

technical field [0001] The invention relates to the field of electronic technology, in particular to a power measurement method and a measurement circuit, method and terminal equipment of the calibration coefficient thereof. Background technique [0002] In recent years, with the continuous development of communication technology and the continuous advancement of science and technology, mobile terminals such as mobile phones, notebook computers, and tablet computers have become indispensable tools in people's daily life; this is because they are easy to carry, easy to use and give People's lives have brought great convenience. [0003] At present, testing the battery capacity of a mobile terminal to determine the performance of the battery is a necessary test that every manufacturer must carry out. Especially for batteries that can be recharged and used repeatedly, it is very necessary to strictly test their battery capacity and label them. When testing the battery capacit...

AI Technical Summary

Problems solved by technology

[0004] However, in the process of realizing the present invention, the inventor finds that the following technical defects also exist in the prior art: 1. Welding test wires at both ends of the rated resistance will cause damage to the circuit board

2. It can only be debugged in the research and development stage, and cannot be imported into mass production

3. The rated resistance is usually a 10 milliohm resistor. Since the 10 milliohm resistor itself is a high-precision specification, welding the test wires at both ends of the 10 milliohm resistor will cause the impedance to change, making the test result inaccurate

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