Terminal battery protection board, terminal battery and terminal
A terminal battery and protection board technology, applied in secondary battery repair/maintenance, secondary battery, electrolyte battery manufacturing, etc., can solve problems such as excessive temperature difference, affecting battery life, and easily scratching the battery cell, etc., to achieve Long maintenance time, reduced overcharge/overdischarge, and reduced safety risks
Active Publication Date: 2021-11-23
BEIJING XIAOMI MOBILE SOFTWARE CO LTD
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Problems solved by technology
As the current increases, the temperature of the battery protection board will be much higher than the temperature of the battery core, resulting in a large difference between the temperature detected by the thermistor and the actual temperature of the battery core, thus triggering the battery protection mechanism, resulting in Under high-rate charging, the mobile phone will limit the current prematurely or shut down unexpectedly, which will affect the user experience; while the thermistor is directly installed on the surface of the battery cell, because the thermistor material is very hard, it is easy to scratch the battery cell and affect the battery life.
Method used
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[0020] 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.
[0021] In the present disclosure, "inner" and "outer" generally refer to the contours of the corresponding components, unless stated otherwise.
[0022] At present, lithium-ion polymer batteries commonly used in mobile phones and other terminals include a battery cell part and a protective plate part. The battery cell is the source of battery energy, including the positive electrode, ...
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The disclosure relates to a terminal battery protection board, a terminal battery and a terminal. The terminal battery protection board includes a protection board body (1) and a thermistor (2) for detecting the temperature of the battery core. A cavity (3) is opened in the protection board body (1), and the thermistor The resistor (2) is accommodated in the cavity (3), and the thermistor (2) is abutted against a heat conduction element and can be in contact with the electric core through the heat conduction element. Through the above technical solution, a cavity for separately accommodating the thermistor is opened on the terminal battery protection plate, so that the thermistor will not be affected by the temperature rise of the terminal battery protection plate itself, and in addition, the thermistor is in contact with the heat-conducting member And through the contact with the battery cell through the heat conduction part, the temperature detected by the thermistor is closer to the battery cell, the high-rate charging lasts longer, and the safety risk of overcharging / over-discharging the battery at abnormal temperature can be reduced.
Description
technical field [0001] The present disclosure relates to the field of electronic equipment, and in particular to a terminal battery protection board, a terminal battery and a terminal. Background technique [0002] In order to meet the ever-increasing higher requirements for the charging speed of terminal equipment such as mobile phones, the method of high-current and high-rate charging is gradually popularized. At present, the batteries of mobile phones and other terminals are mainly lithium-ion polymer batteries, which are mainly composed of batteries and battery protection boards. The thermistor to measure the temperature of the battery cell and the related electronic components to protect the battery according to the detection result. When the temperature is higher than a certain temperature (usually 45°C-60°C), the charging current can be reduced for the protection of the battery itself. [0003] At present, the thermistor used to detect the temperature of the battery...
Claims
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IPC IPC(8): H01M10/058H01M10/42H01M10/48H01M10/6571
CPCH01M10/058H01M10/42H01M10/486H01M10/6571Y02E60/10Y02P70/50
Inventor 张金虎陈仁杰杜龙飞
Owner BEIJING XIAOMI MOBILE SOFTWARE CO LTD