Charger with overvoltage and overcurrent protection and protection method thereof

A technology of overvoltage and overcurrent protection and charger, which is applied in the field of electronic cigarettes, can solve problems such as failure of power supply, burnout, and burnout of electronic cigarette battery rods, etc., and achieve the effect of eliminating hidden dangers

Inactive Publication Date: 2015-02-11
HUIZHOU KIMREE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] There are also some USB chargers on the market that do not even have overvoltage or overcurrent protection functions at all. When a higher voltage is applied to the input terminal of the USB charger, the USB charger does not control the overvoltage, and directly tran

Method used

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  • Charger with overvoltage and overcurrent protection and protection method thereof
  • Charger with overvoltage and overcurrent protection and protection method thereof
  • Charger with overvoltage and overcurrent protection and protection method thereof

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Embodiment Construction

[0058] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific implementation manners of the present invention will now be described in detail with reference to the accompanying drawings.

[0059] In the prior art, when the USB charger is used to charge the battery pole, the overvoltage and overcurrent protection capabilities of the input end and the overcurrent protection ability of the output end are weak or there is no defect of overvoltage and overcurrent protection at all, and a kind of overvoltage and overcurrent protection is provided. Electronic cigarette USB charger.

[0060] refer to figure 1 , is a schematic structural diagram of an electronic cigarette USB charger with overvoltage and overcurrent protection in the present invention;

[0061] The electronic cigarette USB charger with overvoltage and overcurrent protection of the present invention includes a first interface 100, a second interfa...

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Abstract

The invention discloses a charger with overvoltage and overcurrent protection and a protection method thereof. The charger with the overvoltage and overcurrent protection comprises a first interface (100), a second interface (300), a voltage stabilizing unit (400), a control unit (600), an input voltage sampling unit (500), a switch unit (200) and a current sampling unit (700); the voltage stabilizing unit (400) is used for receiving input voltage of an external power source and providing constant working pressure for the control unit (600); the control unit (600) is used for controlling turn-off or turn-on of the switch unit (200) according to whether input voltage detected by the input voltage sampling unit (500) is excessive or not or real-time charging current detected by the current sampling unit (700) is excessive or not; accordingly a protection action of the circuit is achieved. According to the charger with the overvoltage and overcurrent protection, when the charger is in overvoltage or overcurrent, the voltage stabilizing unit provides the constant working voltage for the control unit, normal work of the control unit is guaranteed, and then a power supply and a battery pole are protected from being burnt or losing efficacy by stopping charging the battery pole through the control unit.

Description

technical field [0001] The invention relates to the field of electronic cigarettes, in particular to a charger with overvoltage and overcurrent protection and a protection method thereof. Background technique [0002] At present, most of the USB chargers of the battery poles of electronic cigarettes on the market have weak protection against overvoltage at the input end and overcurrent at the output end. [0003] The overvoltage protection of the input terminal is vulnerable: the common USB charger has an overvoltage protection capability of only 6V, and a higher input voltage (greater than 6V) will overvoltage burn the USB charger, and then burn the e-cigarette battery rod during charging. ; [0004] The vulnerability of the overcurrent protection at the output terminal is as follows: when the output terminal of the USB charger is overcurrent or short-circuited, there is no corresponding protection measure, and a large output current will burn out the USB charger. [0005...

Claims

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Application Information

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IPC IPC(8): H02J7/00H02H7/18
CPCH02H7/18H02J7/0029H02J7/00304
Inventor 向智勇
Owner HUIZHOU KIMREE TECH
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