Battery charging protector

A technology of battery charging and protector, applied in the field of battery charging circuit and battery charging protector, can solve the problems of shortening battery life, long time, prolonging charging time, etc. The effect of increased speed

CN105826990AInactive Publication Date: 2016-08-03HUNAN BOGUANG INFORMATION TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
Publication Date
2016-08-03
Estimated Expiration
Not applicable · inactive patent

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Abstract

The battery charging protector includes a charging control circuit, a charging triode and a charging current setting resistor connected in series with the emitter terminal of the charging triode, and a temperature protection circuit. The negative electrode of the thermal thyristor is connected to the emitter of the charging triode, and the positive electrode is connected to the base of the charging triode, and the temperature coefficients of the charging current setting resistor and the temperature setting resistor are both positive. The present invention uses the triode as the shut-off device, which increases the speed of the shutdown and restart process of charging, reduces the prolongation of charging time caused by temperature protection, and at the same time, because the triode usually has better pressure resistance performance, it can reduce the withstand voltage of the adjustment tube when it is working. Amplitude, using charging current setting resistors and temperature setting resistors with positive temperature coefficients, can stabilize the temperature during charging to a certain extent.
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Description

technical field

[0001] The invention belongs to the field of communication electronics and relates to a battery charging circuit, in particular to a battery charging protector. Background technique

[0002] With the rapid development of science and technology, the relationship between people in the communication industry is getting closer and closer, and they are playing an increasingly important role in people's daily life and work. Any communication device is inseparable from a stable and reliable power supply as a power supply system. In order to meet the various needs of current users, in addition to handling basic call functions, mobile communication terminals also have a variety of multimedia functions, such as MP3, photography, video playback, etc. Video files, radios, running work or game software, etc., are added with various components in order to realize the above functions, which consume more battery power when compared with conventional portable terminals. [0...

Examples

Embodiment Construction

[0014] The specific embodiment of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0015] The battery charging protector of the present invention includes a charging control circuit, and also includes a charging triode and a charging current setting resistor connected in series with the emitter terminal of the charging triode and a temperature protection circuit. The temperature protection circuit consists of a thermal thyristor and a thermal thyristor connected in parallel. The temperature setting resistor between the positive electrode and the control terminal is composed of the negative electrode of the thermal thyristor connected to the emitter of the charging triode, and the positive electrode connected to the base of the charging triode, and the temperature coefficients of the charging current setting resistor and the temperature setting resistor are both positive.

[0016] The charging control circuit is use...