Battery discharge protection circuit

A battery discharge protection and circuit technology, applied in the direction of battery disconnection circuit, battery circuit device, safety/protection circuit, etc., can solve the problems of battery life impact, battery exhaustion, battery damage, etc., to achieve simple circuit and strong stability , the effect of simplicity

Pending Publication Date: 2021-11-09
江苏银佳电子设备有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, after the load is disconnected, the battery terminal voltage will rise rapidly above the threshold voltage, so the battery is re-connected to the circuit to supply power to the load, and then "disconnect-connect-disconnect-connect" will be repeated the oscillation process until the complete depletion of the battery
This will have a great impact on the life of the battery, and even damage the battery

Method used

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Embodiment Construction

[0026] In order to better understand the technical content of the present invention, specific embodiments are given together with the attached drawings for description as follows.

[0027] Aspects of the invention are described herein with reference to the accompanying drawings, in which a number of illustrative embodiments are shown. Embodiments of the present invention are not limited to those shown in the drawings. It should be understood that the present invention can be realized by any one of the various concepts and embodiments described above, as well as the concepts and embodiments described in detail below, because the disclosed concepts and embodiments of the present invention are not limited to any implementation Way. In addition, some aspects of the present disclosure may be used alone or in any suitable combination with other aspects of the present disclosure.

[0028] The invention provides a battery discharge protection circuit, which can complete the battery ...

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Abstract

The invention discloses a battery discharge protection circuit, and relates to the technical field of battery charge and discharge control. The battery discharge protection circuitis used for controlling and protecting a battery in a discharge state and a load thereof, and comprises a power supply unit, a voltage detection unit, a voltage comparison unit and an output action unit, wherein the voltage detection unit comprises a reference voltage sampling circuit and a reference voltage sampling circuit, the voltage comparison unit adopts a special comparator chip to compare the output voltage of the reference voltage sampling circuit and the output voltage of the reference voltage sampling circuit, a driving signal is given, and an output action unit is connected with a load to realize on-off control of the load. According to the technical scheme, the battery electricity is directly used as power supply input, an external power supply circuit is not needed, simplicity and convenience are high, the reference power supply is changed by adjusting resistance parameters according to the battery voltage level, and expandability is high.

Description

technical field [0001] The invention relates to the technical field of battery charge and discharge control, in particular to a battery discharge protection circuit. Background technique [0002] In the modern industrial field, most industrial control occasions are equipped with industrial load equipment using batteries as backup power, such as EPS fire emergency power supply, UPS power supply, etc. When the power grid is cut off, the backup battery starts to supply power to the equipment. At this time, it must Set the battery over-discharge protection circuit to protect the battery itself and its load. The easiest way is to set a voltage protection threshold. When the battery voltage drops to this threshold, the circuit will be automatically disconnected and the output circuit will stop supplying power to the load. [0003] However, after the load is disconnected, the battery terminal voltage will rise rapidly above the threshold voltage, so the battery is re-connected to ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J7/00H02H7/18
CPCH02J7/0029H02J7/0031H02J7/0036H02J7/0047H02J7/0068H02J7/007182H02H7/18
Inventor 姚平耿兴旭戴伟朱忠伟施兴荣冯慧朱星明符文广施鹏程檀三强王勇
Owner 江苏银佳电子设备有限公司
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