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Resistor detection methods and devices of battery, charge/discharge control method and device of battery, and electronic equipment

A resistance detection, charge and discharge technology, applied in the electronic field, can solve the problems of ID resistance and NTC resistance error, affecting the detection accuracy of ID resistance and NTC resistance, etc.

Active Publication Date: 2019-03-15
SHANGHAI BYD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the battery detection circuit, since the circuit for detecting the ID resistance and the circuit for detecting the NTC resistance have a shared circuit, the shared circuit has a certain loop impedance. There will be additional voltage rise or voltage drop on the shared circuit, which will lead to an additional voltage in the detection circuit during the charging and discharging process, which will cause errors in the detection process of the ID resistor and NTC resistor, affecting the ID resistor and NTC resistor. Detection accuracy of NTC resistance

Method used

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  • Resistor detection methods and devices of battery, charge/discharge control method and device of battery, and electronic equipment
  • Resistor detection methods and devices of battery, charge/discharge control method and device of battery, and electronic equipment
  • Resistor detection methods and devices of battery, charge/discharge control method and device of battery, and electronic equipment

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[0098] Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numerals in different drawings refer to the same or similar elements unless otherwise indicated. The implementations described in the following exemplary examples do not represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatuses and methods consistent with aspects of the present disclosure as recited in the appended claims.

[0099] In an embodiment of the present disclosure, the electronic device includes a chargeable and dischargeable battery (such as a lithium battery) for providing electric energy. Since the battery cannot be overcharged, over-discharged, over-current, short-circuited or charged and discharged at high temperature during use, a protection circuit is usually used to protect the battery. ...

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Abstract

The invention relates to resistor detection methods and devices of a battery, a charge / discharge control method and device of the battery, and electronic equipment. One resistor detection method of the battery comprises the following steps: controlling the battery to stop a charge / discharge operation when detecting the resistor of the battery, or performing the charge / discharge operation in a current value less than a threshold; and acquiring a resistance value of an identity (ID) resistor and a resistance value of a negative temperature coefficient (NTC) resistor. Through the above technicalscheme, the additional voltage produced by loop impedance of a common circuit is reduced, so that the resistance value of the ID resistor and the resistance value of the NTC resistor are more accurate, and the accuracy rate of identifying the battery identity and the temperature are improved.

Description

technical field [0001] The present disclosure relates to the field of electronic technology, and in particular, to a battery resistance detection method, charge and discharge control method, device and electronic equipment. Background technique [0002] With the development of communication, mobile phones have become an indispensable part of many people's daily life. In order to ensure the safety of mobile phone batteries during use, it is necessary to use a battery detection circuit to detect whether the battery meets the requirements. In the related art, the battery detection circuit includes an identification (Identity, ID) resistor and a thermistor (Negative Temperature Coefficient, NTC) resistor, wherein the ID resistor is used to identify the identity information of the battery, and the NTC resistor is used to check the temperature of the battery. Check the temperature information. In the battery detection circuit, since the circuit for detecting the ID resistance and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/42H02J7/00
CPCH02J7/0077H01M10/425H01M10/4257H01M10/4285H02J7/00H02J7/00034Y02E60/10
Inventor 周继浩谭明生
Owner SHANGHAI BYD
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