Charger circuit with high safety performance
A safety performance, charging circuit technology, applied in safety/protection circuits, battery circuit devices, current collectors, etc., can solve problems affecting battery life, battery safety accidents, battery heating, etc., to avoid charging heating, high safety performance , the effect of controlling the output power
Pending Publication Date: 2020-12-22
濮阳市立圆汽车电器有限公司
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Problems solved by technology
[0002] When charging the battery, the phenomenon of battery heating often occurs, and the heating of the battery will cause safety accidents; in addition, when the chargers currently on the market charge the battery, as the charging time increases, when the battery is about to be fully charged, if it still With a certain power output, the battery will heat up, which will affect the service life of the battery and even cause the battery to explode.
Method used
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[0026] In order to make those skilled in the art better understand the present invention, the present invention will be further described below in conjunction with specific embodiment:
[0027] A charger circuit with high safety performance, including a charging circuit module, a sampling comparison circuit module and a charging control circuit module; the output of the charging circuit module is used to connect with the charging interface of the battery, and convert the 220V mains rectification into the battery BT required voltage to charge the battery BT.
[0028] The sampling comparison circuit module includes an operational amplifier IC2, the inverting input pin of the operational amplifier is connected to the charging circuit module for collecting battery voltage signals, the non-inverting input pin of the operational amplifier is connected to a reference voltage circuit, and the reference voltage circuit provides a reference voltage for the operational amplifier , the ou...
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The invention discloses a charger circuit with high safety performance, which belongs to the technical field of chargers. The charger circuit comprises a charging circuit module, a sampling comparisoncircuit module and a charging control circuit module. The sampling comparison circuit module comprises an operational amplifier IC2, an inverting input pin of the operational amplifier is connected with the charging circuit module and used for collecting a battery voltage signal, a non-inverting input pin of the operational amplifier is connected with a reference voltage circuit, and an output ofthe operational amplifier is connected with a signal input terminal of the charging control circuit module; the charging control circuit module comprises a photoelectric coupler and a power supply control circuit, the output of the operational amplifier is connected with the input of the photoelectric coupler, and the output of the photoelectric coupler is connected with a power supply control circuit. When the battery is about to be fully charged, light is transmitted to a primary side of a transformer T in the form of light through the photoelectric coupler to control the duty ratio of output current, the battery is charged with small currents, the effect of controlling the output power is achieved, the battery is prevented from being heated during charging, and the safety performance is high.
Description
technical field [0001] The invention belongs to the technical field of chargers, and in particular relates to a charger circuit with high safety performance. Background technique [0002] When charging the battery, the phenomenon of battery heating often occurs, and the heating of the battery will cause safety accidents; in addition, when the chargers currently on the market charge the battery, as the charging time increases, when the battery is about to be fully charged, if it still With a certain power output, the battery will heat up, which will affect the service life of the battery, and even cause the battery to explode. Contents of the invention [0003] The purpose of the present invention is to provide a charger circuit with high safety performance. When the battery is about to be fully charged, it uses low-power charging to alleviate the heating of the battery and effectively avoid the problem of overheating and damage to the battery during charging. By setting t...
Claims
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Login to View More IPC IPC(8): H02J7/00H02J7/10
CPCH02J7/0013H02J7/06H02J7/00309H02J7/00712H02J7/007182
Inventor 仝兴孚
Owner 濮阳市立圆汽车电器有限公司