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battery protection circuit

A technology for protecting circuits and batteries, applied in the direction of emergency protection circuit devices, electrical components, etc., can solve the problems of cumbersome operation and easily damaged battery terminals, etc., and achieve the effect of simple operation

Active Publication Date: 2022-07-22
SHENZHEN POWER SUPPLY BUREAU
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Based on this, it is necessary to provide a battery protection circuit for the existing vehicle battery to avoid the power depletion. The method adopted is to remove the battery connection.

Method used

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Embodiment Construction

[0065]In order to make the above objects, features and advantages of the present application more clearly understood, the specific embodiments of the present application will be described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present application. Therefore, the present application is not limited by the specific implementation disclosed below.

[0066] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can ...

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Abstract

The present application provides a battery protection circuit, including a switch, a relay, a controllable switch component and a voltage detection and comparison circuit. The first end of the switch is used to electrically connect the battery. The first end of the relay is used to electrically connect the battery. The second end of the relay is used for being electrically connected to the incoming line end of the vehicle power supply. The third end of the relay is electrically connected to the second end of the switch. The first end of the controllable switch assembly is electrically connected with the fourth end of the relay. The control end of the controllable switch assembly is electrically connected to the second end of the switch. The second end of the controllable switch assembly is grounded. The first end of the voltage detection and comparison circuit is electrically connected with the second end of the relay. The second terminal of the voltage detection and comparison circuit is electrically connected to the control terminal of the controllable switch assembly. The voltage detection and comparison circuit is used to obtain the power supply voltage of the battery, and output high and low levels based on the power supply voltage and a preset reference voltage, so as to control the turn-on and turn-off of the controllable switch component.

Description

technical field [0001] The present application relates to the technical field of automobile batteries, in particular to a battery protection circuit. Background technique [0002] At present, with the continuous breakthroughs in battery grouping technology, cell material technology and battery management technology, new energy vehicles have become more and more mature in terms of battery life and safety management, and their concept of environmental protection and green travel has attracted more and more people to go Accepted, the reaction of the market also indirectly verified this. The battery of an existing car is the source of electrical energy supply for the car's starting and the vehicle's own control systems. The charging of the battery must be carried out when the vehicle is started, or the battery must be charged from an external power supply. [0003] Because the battery of the vehicle is always connected to the power system of the vehicle, the battery is always ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02H7/18
CPCH02H7/18
Inventor 赵法强袁汉凯汪建波宋泽均李嘉
Owner SHENZHEN POWER SUPPLY BUREAU
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