Intelligent charging and discharging control circuit for battery

Abstract

The invention relates to a control circuit, and discloses an intelligent charging and discharging control circuit for a battery. The intelligent charging and discharging control circuit comprises a charging input voltage detection circuit used for detecting charging voltage input during battery charging, a charging current control circuit used for controlling the current used for battery charging according to the charging voltage detected in the previous step, a battery voltage detection circuit used for monitoring the voltage of the two ends of the battery in a charging state, and a large-current discharging control circuit used for discharging during operation of the battery. The intelligent charging and discharging control circuit for the battery has the beneficial effects that the problem of overcharge caused when a battery device is charged by a user with non-matching voltage can be solved effectively, the control circuit is safe and reliable, and hidden risks of explosion of the battery in charging can be avoided. A consumer does not need to identity the voltage of a charging device during charging, and the use is more convenient. For the electronic smoke industry, the type of an adapter joint does not need to be considered during charging, and the electronic smoke adopting the circuit can be charged by any adapter joint.

Description

technical field [0001] The invention relates to a control circuit, in particular to a battery intelligent charging and discharging control circuit. Background technique [0002] In the prior art, when charging a rechargeable battery, a matching charger (also known as an "adapter") must be used to charge the battery. For example: in the electronic cigarette industry, mechanical electronic cigarettes use adapter chargers with an output of 4.2V, and integrated electronic cigarettes use adapter chargers with an output of 5.0V. If the mechanical electronic cigarette is charged with a 5.0V charger (adapter) by mistake, it will damage the internal structure of the battery and reduce the service life of the battery. While the property loss of consumers, it also brings hidden dangers to personal safety. And in reality, due to the universality of the threads connecting the electronic cigarette to the charger, in practical applications, this error often occurs from time to time. Sim...

AI Technical Summary

Problems solved by technology

If the mechanical electronic cigarette is charged with a 5.0V charger (adapter) by mistake, it will damage the internal structure of the battery and reduce the service life of the battery. While the property loss of consumers, it also brings hidden dangers to personal safety

And in reality, due to the universality of the threads connecting the electronic cigarette to the charger, in practical applications, this error often occurs from time to time

Similarly, in mobile devices such as mobile phones and MP3 players, due to the universality of the charging interface, rechargeable batteries also have the above-mentioned potential safety hazards when charging

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