Battery over-discharge electric protection circuit
A protection circuit and over-discharge technology, applied to emergency protection circuit devices, electrical components, etc., can solve the problems of large space occupation, low efficiency, complex structure, etc., achieve small space occupation, simple structure, and realize battery over-discharge protection Effect
Inactive Publication Date: 2015-04-15
SHENZHEN OCEANS KING LIGHTING ENG CO LTD +1
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Problems solved by technology
In the prior art, the battery over-discharge protection circuit is generally composed of multiple resistors, multiple diodes and other components, the efficiency of battery over-discharge protection is low, and it takes up a lot of space and has a complex structure
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[0018] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0019] The invention provides a battery over-discharge protection circuit, which can effectively realize the battery over-discharge protection. When the battery is over-discharged, the system is opened to protect the circuit, and the structure is simple and the occupied space is small. Each will be described in detail below.
[0020] Please refer to figure 1 , is a schematic diagram of a battery over-discharge protection circuit provided by an embodiment of t...
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The embodiment of the invention discloses a battery over-discharge electric protection circuit. The battery over-discharge electric protection circuit comprises an operational amplifier U1, a triode Q1, a voltage-stabilizer tube D1, an electromagnetic relay K1 and a battery BT. The anode of the voltage-stabilizer tube D1 is connected with the ground, the cathode of the voltage-stabilizer tube D1 is respectively connected with a power source VCC and the third pin of the operational amplifier U1, the fourth pin of the operational amplifier U1 is respectively connected with the power source VCC and the collector electrode of the triode Q1, the first pin of the operational amplifier U1 is connected with the base electrode of the triode Q1, the second pin of the operational amplifier U1 is connected with the anode of the battery BT, the eleventh pin of the operational amplifier U1 is respectively connected with the emitter electrode of the triode Q1 and the ground, the emitter electrode of the triode Q1 is connected with the power source VCC through the electromagnetic relay K1, one end of a load is connected with the anode of the battery BT through a driver, and the other end of the load is connected with the cathode of the battery BT. According to the embodiment of the invention, battery over-discharge protection can be effectively realized, when the battery is over discharged, the circuit is protected through a system open circuit, the structure is simple, and the occupation space is small.
Description
technical field [0001] The invention relates to the field of battery protection, in particular to a battery over-discharge protection circuit. Background technique [0002] In order to ensure that unattended equipment (such as attendance machines, etc.) can still run after a power failure, a battery is usually added as a backup power supply. When the power grid is cut off, the backup battery starts to supply power to the equipment, and the battery over-discharge protection circuit must be set at this time. In the prior art, the battery over-discharge protection circuit is generally composed of multiple resistors, multiple diodes and other components, which are inefficient in implementing battery over-discharge protection, occupy a large space, and have a complex structure. Contents of the invention [0003] The technical problem to be solved by the embodiments of the present invention is to provide a battery over-discharge protection circuit, which can effectively realize...
Claims
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IPC IPC(8): H02H7/18
Inventor 周明杰杨小军
Owner SHENZHEN OCEANS KING LIGHTING ENG CO LTD