Intelligent charge-discharge control circuit of battery

Abstract

The invention relates to a control circuit, and discloses an intelligent charge-discharge control circuit of a battery. The intelligent charge-discharge control circuit comprises a charge input voltage detection circuit, a charge current control circuit, a battery voltage detection circuit and a large-current discharge control circuit, wherein the charge input voltage detection circuit is used for detecting an input charge voltage when the battery is charged; the charge current control circuit is used for controlling a current for charging the battery according to the previously detected charge voltage; the battery voltage detection circuit is used for monitoring voltages at two ends of the battery in a charging state; and the large-current discharge control circuit is used for discharging in battery operation. The intelligent charge-discharge control circuit has the benefits that an overcharge problem caused when a user charges a battery device by using the unmatched voltage is effectively avoided, so that the circuit is safe and reliable, and an explosion hidden danger of the battery in a charging state is completely eradicated; and the user does not need to distinguish the voltages of charging equipment when the battery is charged, so that the use is more convenient. For the electronic cigarette industry, a consideration for types of adapters is no required, and any adapter can be used for charging electronic cigarettes with the intelligent charge-discharge control circuit.

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

Images