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Electronic device with forced shutdown function

A technology of electronic devices and functions, which is applied in the direction of circuit devices, battery circuit devices, current collectors, etc., and can solve problems such as inability to shut down

Inactive Publication Date: 2014-12-17
HONG FU JIN PRECISION IND (SHENZHEN) CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the above-mentioned circuit structure, when the electronic device 100 crashes due to user misoperation or other reasons, even if the external power supply is forcibly cut off, the built-in battery will continue to supply power to the electronic device 100, so it is impossible to shut down.

Method used

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  • Electronic device with forced shutdown function
  • Electronic device with forced shutdown function

Examples

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Embodiment Construction

[0011] Please refer to figure 2 The electronic device 200 in this embodiment includes an external power interface 21, a first switch 22, a charging and discharging protection module 23, a built-in battery 24, a voltage conversion chip 25, various electronic components 26 connected to the voltage conversion chip 25, a second A resistor 27 , an RC parallel circuit 28 and a second switch 29 . The external power interface 21 is used for connecting with an external power supply. The external power interface 21 is connected to the built-in battery 24 through the first switch 22 and the charging and discharging protection module 23 . The voltage input terminal Vin of the voltage conversion chip 25 is connected to the external power interface 21 and the first switch 22 . When the external power interface 21 is connected to the external power supply, the first switch 22 is turned on along the first direction, and the external power supply charges the built-in battery 24 and provides...

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Abstract

The invention provides an electronic device with a forced shutdown function. The electronic device comprises an external power supply interface, a first switch, a charge and discharge protection module, a built-in battery, a voltage conversion chip and electronic elements. The electronic device further comprises a first resistor, an RC parallel circuit and a second switch. The first end of the first resistor is connected between the external power supply interface and the voltage input end of the voltage conversion chip, and the second end of the first resistor is connected between the second switch and the first end of the RC parallel circuit. The first end of the RC parallel circuit is connected with an enable end of the voltage conversion chip, and the second end of the RC parallel circuit is grounded. When the second switch is located at the first position, the second end of the first resistor is connected with a voltage input end Vcc, and when the second switch is located at the second position, the second end of the first resistor is grounded. When failing to be shut down, the electronic device can be forcefully shut down by operation of the second switch.

Description

technical field [0001] The invention relates to an electronic device, in particular to an electronic device with a forced shutdown function. Background technique [0002] The built-in batteries of some portable electronic devices are non-removable built-in batteries. When the electronic device is connected to an external power source, the external power source not only supplies power to each electronic component of the electronic device, but also charges a built-in battery. Such as figure 1 As shown, the electronic device 100 includes an external power interface 11 , a switch 12 , a charging and discharging protection module 13 , a built-in battery 14 , a voltage conversion chip 15 and various electronic components 16 . The external power supply interface 11 is used for connecting with an external power supply. The external power interface 11 is connected to the built-in battery 14 through a switch 12 and a charging and discharging protection module 13 . Switch 12 may be...

Claims

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Application Information

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IPC IPC(8): H02J7/00
CPCH02J7/0031H02J7/0068
Inventor 汪涛
Owner HONG FU JIN PRECISION IND (SHENZHEN) CO LTD
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