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A battery protection circuit and an explosion-proof lighting device

A technology for protection circuits and charging circuits, which is applied in the direction of emergency protection circuit devices, circuit devices, emergency protection devices that automatically disconnect, etc., can solve the problems of reducing the service life of explosion-proof lighting devices and the failure of battery protection circuits, etc., to reduce airtightness The requirements of safety, prolonging the service life, and the effect of being easy to carry

Active Publication Date: 2016-03-30
OCEANS KING LIGHTING SCI&TECH CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the embodiments of the present invention is to provide a battery protection circuit, aiming to solve the problem that the existing battery protection circuit cannot perform overvoltage, short circuit, and overheat protection, thereby reducing the service life of the explosion-proof lighting device

Method used

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  • A battery protection circuit and an explosion-proof lighting device
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  • A battery protection circuit and an explosion-proof lighting device

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Embodiment Construction

[0019] In order to make the objectives, technical solutions and advantages of the present invention clearer, the following further describes the present invention in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention.

[0020] In the embodiment of the present invention, when the battery is overvoltage, undervoltage, short circuit, and overheating, the connection between the battery and the circuit is shut off by the undervoltage or overvoltage signal to realize overvoltage, undervoltage, short circuit and overheat protection, and reduce the damage of the explosion-proof lighting device. Airtightness requirements.

[0021] figure 2 The structure of the battery protection circuit provided by the embodiment of the present invention is shown. For ease of description, only the parts related to the present inventio...

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Abstract

The invention relates to the explosion-proof lighting field and provides a battery protection circuit and an explosion-proof lighting device. The battery protection circuit is connected with a battery and a charging circuit. The battery protection circuit comprises a double anti-recharging unit, a first voltage detection unit and a first switch control unit, wherein the double anti-recharging unit is used for respectively conducting anti-recharging protection on a positive output end and a negative output end of the charging circuit, the first voltage detection unit is used for detecting voltage of the battery, an undervoltage protection signal is output when the voltage of the battery is in an undervoltage state, and an overvoltage protection signal is output when the voltage of the battery is in an overvoltage state, the first switch control unit is used for switching off when the overvoltage protection signal or the undervoltage protection signal is received and entering a protection state. Due to the fact that connection between the battery and the circuit is shutdown through the undervoltage protection signal and the overvoltage protection signal when the battery is in the overvoltage state, the undervoltage state, a short circuit state and an overheating state, overvoltage protection, undervoltage protection, short circuit protection and overheating protection are achieved, a requirement of the explosion-proof lighting device on impermeability is reduced, the service life is prolonged, volume is reduced, and carrying is convenient.

Description

Technical field [0001] The invention belongs to the field of explosion-proof lighting, and in particular relates to a battery protection circuit and an explosion-proof lighting device. Background technique [0002] Currently in explosion-proof lighting devices, usually figure 1 The battery protection circuit 1 shown is used for shutdown protection when the battery is under-voltage, including: diode D11, resistor R11, resistor R12, resistor R13, resistor R14, resistor R15, capacitor C11, switch tube Q1, switch tube Q2 and the switch Q3, the anode of the diode D11 is connected to the forward output terminal of the charging circuit 4, the cathode of the diode D11 is connected to the anode of the battery BT and one end of the resistor R11 at the same time, the other end of the resistor R11 is grounded through the resistor R12, the battery BT The negative pole is connected to the negative pole of the charging circuit 4 and grounded, the input end of the switch Q1 is connected to one e...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02H7/18H02H3/20H02H3/24H02H3/08H02H5/04
Inventor 周明杰邵贤辉
Owner OCEANS KING LIGHTING SCI&TECH CO LTD
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