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Method for protecting battery and electronic device

A technology of electronic equipment and battery power, applied in the field of electronics, can solve problems such as battery damage

Active Publication Date: 2014-07-02
LENOVO (BEIJING) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The invention provides a battery protection method and electronic equipment, which solves the technical problem of damage to the battery due to side reactions inside the battery in the prior art

Method used

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  • Method for protecting battery and electronic device
  • Method for protecting battery and electronic device
  • Method for protecting battery and electronic device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0089] Such as figure 1 As shown, a method for protecting a battery is applied to an electronic device, the electronic device is provided with a battery, and the method includes:

[0090] Execute step 101, that is: when the inter-electrode voltage between the positive and negative electrodes of the battery is a first voltage, acquire a first temperature value representing the current temperature of the battery;

[0091] In the specific implementation process, a temperature sensor can be used to detect the current temperature information of the battery. Since the temperature of each part of the battery may be different, the first temperature information should be the temperature of the highest temperature part of the battery. information.

[0092] After step 101 is executed, step 102 can be executed, that is: judge whether the first temperature value is greater than a preset temperature value, and obtain a judgment result;

specific Embodiment approach

[0094] The first,

[0095] judging whether the first temperature value is greater than a first preset temperature value, and obtaining a first judging result;

[0096] In the specific implementation process, the value range of the first preset temperature value is 45°C±5°C, such as: 40°C, 45°C, and 50°C. What is the specific value of the first preset temperature value? The application examples do not make specific limitations.

[0097] When the first judgment result shows that the first temperature value is greater than the first preset temperature value, it is judged whether the first temperature value is greater than the second preset temperature value, and a second judgment result is obtained, wherein the The second preset temperature value is greater than the first preset temperature value;

[0098] In the specific implementation process, the value range of the second preset temperature value is 60°C±5°C, such as: 55°C, 60°C, and 65°C. What is the specific value of the s...

Embodiment 2

[0177] The embodiment of this application will give an optimized technical solution based on the first embodiment. This technical solution can be directly applied to the power management system of electronic equipment, which can realize more accurate judgment on the state of the battery and make corresponding The technical effect of the measure.

[0178] Such as image 3 As shown, step 301 is executed first, that is, it is judged whether the current temperature is greater than 45°C. When the judgment result in step 301 is no, it is confirmed that the battery is in a normal state. When it is confirmed that the battery is in a normal state, the temperature value of the battery will be obtained after a predetermined time, and the step 301 will be executed again to repeat the judgment, so as to achieve the purpose of monitoring the state of the battery in real time.

[0179] When the judgment result of step 301 is yes, continue to execute step 302, that is, judge whether the tem...

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Abstract

The invention discloses a method for protecting a battery and an electronic device, and solves the technical problem of damage to the battery due to side reaction in the battery in the prior art. The method is applicable to an electronic device which comprises a battery. The method comprises the following steps: obtaining a first temperature value for showing the current temperature of the battery when an inter-electrode voltage between a positive electrode and a negative electrode of the battery is a first voltage; judging whether the first temperature value is greater than a preset temperature value to obtain a judgment result; adjusting the inter-electrode voltage from the first voltage to a second voltage when the judgment result shows that the first temperature value is greater than the preset temperature value, wherein the second voltage is less than the first voltage or the second voltage is less than a third voltage, and the third voltage is the inter-electrode voltage when the battery is fully charged.

Description

technical field [0001] The invention relates to the field of electronics, in particular to a battery protection method and electronic equipment. Background technique [0002] Lithium-ion batteries are currently widely used in mobile electronic devices, electric tools, pure electric vehicles, energy storage systems, etc. The main reaction chemical equation of the battery is as follows (taking lithium cobalt oxide as an example for the positive electrode material): [0003] [0004] However, in the process of realizing the technical solution of the invention in the embodiment of the present application, the inventor of the present application found that the above-mentioned technology has at least the following technical problems: [0005] In practice, the battery not only has the above-mentioned main reaction, but also has side reactions. These side reactions have great damage to the battery, such as: when the battery is charged, as the battery voltage increases, the chemic...

Claims

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Application Information

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IPC IPC(8): H01M10/48H01M10/42
CPCH01M10/425H01M10/48H01M10/486H01M2010/4271Y02E60/10
Inventor 李涛林威志
Owner LENOVO (BEIJING) CO LTD
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