Charging circuit, charging method, storage medium and electronic device
A charging circuit and charging method technology, applied in the field of communications, can solve problems such as damage to electronic equipment
Active Publication Date: 2021-07-13
BEIJING WANJI TECH
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Problems solved by technology
[0005] Embodiments of the present invention provide a charging circuit, a charging method, a storage medium, and an electronic device, so as to at least solve the problem in the related art that excessive charging of a rechargeable battery causes damage to electronic equipment, etc.
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[0021] Hereinafter, the present invention will be described in detail with reference to the accompanying drawings and in conjunction with embodiments. It should be noted that the embodiments in the present application and the features of the embodiments may be combined with each other in the case of no conflict.
[0022] It should be noted that the terms "first", "second" and the like in the description and claims of the present invention and the above drawings are used to distinguish similar objects, and are not necessarily used to describe a specific sequence or sequence. It is to be understood that the data so used are interchangeable under appropriate circumstances for the embodiments of the application described herein. Furthermore, the terms "comprising" and "having" and any variations thereof, are intended to cover non-exclusive inclusion, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those ...
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The present invention provides a charging circuit, the charging circuit includes: a first voltage converter, the input end of which is connected to an external input power supply, and the output end is connected to the source of a MOS tube, and is used to input the first voltage of the external input power supply Reduced to the second voltage; MOS transistor, its gate is connected to the positive pole of the rechargeable battery, its drain is connected to the control terminal of the second voltage converter, and the control terminal is grounded through a pull-down resistor; the input terminal of the second voltage converter It is connected to the external input power supply, and its output terminal is connected to the anode of the diode, which is used when the power of the rechargeable battery is higher than the first threshold, and the difference between the source and the gate of the MOS transistor is less than the threshold voltage of the MOS transistor , the drain of the MOS transistor outputs a low level to the control terminal of the second voltage converter. When the control terminal input is low level, the output terminal has no voltage output to stop charging the rechargeable battery; the negative pole of the diode Connect to the positive terminal of the rechargeable battery, and the negative terminal of the rechargeable battery is grounded.
Description
technical field [0001] The present invention relates to the field of communications, and in particular, to a charging circuit, a charging method, a storage medium and an electronic device. Background technique [0002] Rechargeable batteries can be applied in various fields. For example, most of the electronic devices in automobiles are powered by automobile batteries as an external power supply source. In order to keep working continuously and not lose important information, some electronic devices are also equipped with batteries. This battery is a rechargeable battery. When the power is insufficient, it will be charged from the car battery, but it is inevitable that the battery will be overcharged. [0003] In order to avoid damage to the car battery and electronic equipment caused by overcharging, the present invention proposes a charging circuit that can control the charging current and automatically perform charging switching. [0004] In the related art, an effective...
Claims
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IPC IPC(8): H02J7/00
Inventor 谢仲朱胜超赵昱阳
Owner BEIJING WANJI TECH