Voltage detecting type rechargeable battery protector

Abstract

The invention discloses a voltage detecting type rechargeable battery protector which comprises a rechargeable battery pack, a charge end, a discharge end, a singlechip, a detecting resistor, a current detecting amplifier, an LED (Light Emitting Diode) indicator lamp, a charge control field effect transistor, a discharge control field effect transistor and a voltage stabilizing chip. The rechargeable battery pack converts the voltage of the rechargeable battery into direct voltage through the voltage stabilizing chip and supplies the direct voltage to the singlechip and the current detecting amplifier for working; the current detecting amplifier detects the voltages at the two ends of the detecting resistor and transmits the voltage signals to the singlechip; the singlechip controls the display of the LED indicator lamp; the singlechip controls the connection and disconnection of the charge end and an anode of the rechargeable battery pack by controlling the opening and closing of the charge control field effect transistor; and the singlechip controls the connection and disconnection of the discharge end and the anode of the rechargeable battery pack by controlling the opening and closing of the discharge control field effect transistor. The voltage detecting type rechargeable battery protector is multifunctional and has the advantages of programmable design, simple structure and low electricity consumption.

Description

technical field [0001] The invention relates to a voltage detection type rechargeable battery protection device. Background technique [0002] With the widespread use of digital products such as mobile phones, notebook computers, electric bicycles and other products, rechargeable batteries are also widely used in such products. Rechargeable batteries have the advantages of economy, environmental protection, sufficient power, suitable for high power, and long-term use. However, improper use during its use will cause damage to the battery itself, such as overcharging or overdischarging the rechargeable battery during use, excessive current or high temperature, etc., will cause damage to the rechargeable battery and affect its service life. . [0003] There are many circuit devices for protecting rechargeable batteries at present, but their overall structure and function need to be improved. Contents of the invention [0004] In order to overcome the above-mentioned defects...

AI Technical Summary

Problems solved by technology

[0002] With the widespread use of digital products such as mobile phones, notebook computers, electric bicycles and other products, rechargeable batteries are also widely used in such products. Rechargeable batteries have the advantages of economy, environmental protection, sufficient power, suitable for high power, and long-term use. However, improper use during its use will cause damage to the battery itself, such as overcharging or overdischarging the rechargeable battery during use, excessive current or high temperature, etc., will cause damage to the rechargeable battery and affect its service life.

[0003] At present, there are many circuit devices for protecting rechargeable batteries, but their overall structure and functions need to be improved.

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