A battery protection circuit and system
A technology for protecting circuits and batteries, which is applied in battery circuit devices, safety/protection circuits, battery over-discharge protection, etc. It can solve the problems of over-discharge of small-capacity batteries, consume a lot of battery energy, and high hardware costs, so as to prevent continuous power consumption , Low hardware cost, simple circuit effect
Active Publication Date: 2022-05-17
HYTERA COMM CORP
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Problems solved by technology
[0004] In view of this, the embodiment of the present invention provides a battery protection circuit and system to solve the problem of the existing protection circuit that consumes more battery energy and causes the over-discharge state of the small-capacity battery, and the circuit is complicated and the hardware cost is high. question
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[0048] 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.
[0049]In this application, the term "comprises", "comprises" or any other variation thereof is intended to cover a non-exclusive inclusion such that a process, method, article, or apparatus comprising a set of elements includes not only those elements, but also includes none. other elements specifically listed, or also include elements inherent in such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comp...
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The present invention provides a battery protection circuit and system, in which the timing unit controls the output signal of its own output terminal after a preset time period that satisfies the preset condition according to the control instruction received by the communication terminal, and then controls the input terminal of the switch unit Disconnect the connection with the output terminal to realize disconnection of the power supply output of the battery and prevent the continuous power consumption after the battery is used up; at the same time, after the power supply output of the battery is cut off, there is only a small leakage current in the switch unit, which can avoid causing The excessive power consumption of the battery effectively prevents the battery from being in an over-discharge state and plays a role in protecting the battery from over-discharge; and the current limiting unit, switching unit and timing unit adopted in the present invention have simple circuits and low hardware costs.
Description
technical field [0001] The invention relates to the technical field of the electronic industry, in particular to a battery protection circuit and system. Background technique [0002] After the battery is discharged, the battery that activates the active material by charging and continues to use is called a secondary battery. With the emergence of the concept of resource sustainable development, secondary batteries are widely used in daily life. When the battery is discharged, the stored electric energy is gradually released, and the voltage drops slowly. When the voltage drops to a certain value, the discharge should be stopped. If the battery continues to discharge, it will lead to over-discharge. Excessive discharge can easily damage the battery chemistry and lead to deactivation of the battery, which in turn can no longer be used until it is scrapped. [0003] In order to avoid excessive discharge, the lithium battery over-discharge protection circuit existing in the p...
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IPC IPC(8): H02J7/00
CPCH02J7/00306H02J7/0071Y02E60/10
Inventor 谢绍伟郎华敏龙小翠
Owner HYTERA COMM CORP