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Mobile terminal battery life cycle reading circuit

A technology of life cycle and circuit reading, applied to batteries, circuits, secondary batteries, etc., can solve the problem of occupying PCB layout area, and achieve the effect of reducing the number of battery PINs, ensuring access, and simplifying circuit layout

Active Publication Date: 2021-01-12
SHANGHAI CHANGLIAN ZHIRONG COMM TECH
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

However, more pins configured on the battery will greatly occupy the PCB layout area, and will also cause contact reliability problems

Method used

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  • Mobile terminal battery life cycle reading circuit
  • Mobile terminal battery life cycle reading circuit

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Embodiment Construction

[0026] It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0027] In order for those skilled in the art to better understand the solution of the present invention, the technical solution in the embodiment of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiment of the present invention. Obviously, the described embodiment is only It is an embodiment of a part of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall belong to the protection scope of the present invention.

[0028] In addition, the terms "first", "second" and the l...

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Abstract

The invention provides a mobile terminal battery life cycle reading circuit, and belongs to the technical field of mobile terminal batteries. The circuit comprises a battery temperature detection circuit, a battery electric quantity detection circuit, a communication circuit, a battery life cycle detection circuit, a first switching circuit and a second switching circuit. According to the mobile terminal battery life cycle reading circuit provided by the invention, multiplexing of NFC antenna signals ANT+ / ANT- and I2C signals SCL / SDA is realized, so that the number of battery PINs is reduced,the circuit layout is simplified, acquisition of battery life cycle data can be ensured, and the circuit layout is simpler.

Description

technical field [0001] The invention belongs to the technical field of mobile terminal batteries, and in particular relates to a mobile terminal battery life cycle reading circuit. Background technique [0002] In the prior art, there are four pins configured on an ordinary battery, which are: VBAT pin, GND pin, THERMAL pin and ID pin. In the battery of the mobile terminal, since the life cycle of the battery needs to be counted, the mobile terminal host obtains the life cycle information of the battery through the I2C interface; at the same time, the NFC antenna is often configured on the back cover of the battery, so the battery of the mobile terminal needs Configure 7 pins, in order: VBAT pin, GND pin, THERMAL pin, SCL pin, SDA pin, NFC ANT+ pin and NFC ANT- pin (the ID information of the battery can be read by the I2C interface The KEY information of the built-in battery power reading chip (FUEL GUAGE IC) in the battery is replaced). However, a large number of pins on ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/42
CPCH01M10/4264H01M2010/4271H01M2010/4278H01M2220/30Y02E60/10
Inventor 王晓君
Owner SHANGHAI CHANGLIAN ZHIRONG COMM TECH
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