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Intelligent charge-discharge control circuit of battery

A technology of intelligent charge and discharge and control circuit, which is applied in the direction of battery circuit devices, circuit devices, collectors, etc., can solve problems such as battery leakage, personal safety hazards, and smoke, and achieve the effect of low cost and eliminating potential safety hazards

Inactive Publication Date: 2013-02-06
SHENZHEN FIRST UNION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

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  • Intelligent charge-discharge control circuit of battery

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Embodiment Construction

[0018] Some embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0019] figure 1 Schematically shows a battery intelligent charge and discharge control circuit according to an embodiment of the present invention, including:

[0020] The charging input voltage detection circuit includes a capacitor C1, a resistor R2, a resistor R3, a resistor R6, an inductor L1, a MOS transistor Q3, a battery BAT, a microcontroller U1 and an integrated circuit U2. Resistor R2, inductor L1, battery BAT and MOS tube Q3 are connected in series in sequence, resistor R3 is connected in series with resistor R6, the above two series circuits are connected in parallel and then connected in parallel with capacitor C1, and both ends of MOS tube Q3 are connected in parallel with single chip microcomputer U1. The single chip microcomputer U1 is connected in parallel with the integrated circuit U2. This circuit is used to detect th...

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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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J7/00
Inventor 李永海徐中立
Owner SHENZHEN FIRST UNION TECH CO LTD
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