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a power supply circuit

A technology for power supply batteries and circuits, which is applied in the direction of circuit devices, electrical components, emergency power supply arrangements, etc., can solve the problem of continuous restart of electrical components, and achieve the effect of avoiding continuous restart

Active Publication Date: 2018-09-07
HITACHI BUILDING TECH GUANGZHOU CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The embodiment of the present invention provides a power supply circuit to solve the problem that in the existing electronic board design, when the external power supply is interrupted and the battery continues to supply power to the power-consuming components, the existing power-consuming components continue to restart

Method used

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Embodiment 1

[0024] figure 1 It is a structural diagram of a power supply circuit provided by Embodiment 1 of the present invention. This embodiment is applicable to the situation in the design of electronic boards, where after the external power supply is interrupted, the battery needs to continue to supply power to the electric components. see figure 1 A power supply circuit provided in this embodiment includes an external power interface 110, a voltage reducer 120, and a voltage regulator 130 connected in sequence, and also includes: a battery charging chip 140, a power supply battery 150, a switch module 160, and a control signal amplification module 170 and reset chip 180;

[0025] The input end of the battery charging chip 140 is connected to an external power supply through the external power supply interface 110;

[0026] The positive pole of the power supply battery 150 is respectively connected to the output terminal of the battery charging chip 140 and the input terminal of th...

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Abstract

An embodiment of the invention discloses a power supply circuit. The power supply circuit comprises an external power supply interface, a voltage reduction device and a voltage stabilizer. The power supply circuit also comprises a battery charge chip, a power supply battery, a switch module, a control signal amplification module and a reset chip. The input end of the battery charge chip is connected with an external power source through the external power supply interface; the positive pole of the power supply battery is connected with the output end of the battery charge chip and the input end of the switch module; the negative pole of the power supply battery is grounded; the output end of the switch module is connected with the input end of the voltage stabilizer; the switch module is of a unidirectional conduction type; the output end of the voltage stabilizer is connected with the voltage input end of the reset chip; the reset end of the reset chip is connected with the input end of the control signal amplification module; and the output end of the control signal amplification module is connected with the control end of the switch module. The power supply circuit solves the problem that electrical components are restarted repeatedly when the external power supply is interrupted and the battery is then, utilized to supply power for the electrical components in the existing electronic board design.

Description

technical field [0001] Embodiments of the present invention relate to power supply technology, and in particular to a power supply circuit. Background technique [0002] In the design of electronic boards, batteries are often used as backup power for electrical components such as single-chip microcomputers to continue to operate after the external power supply is interrupted. [0003] In the prior art, the battery has such a working state. When the battery voltage is lower than a critical value, it will cause the power-consuming components to stop working; when the power-consuming components stop working, the output current of the battery will become smaller, which will cause the battery voltage to Return to above the critical value, thereby starting the work of the electrical components; and so on. [0004] The above-mentioned technology causes the power-consuming components to restart continuously, and the power-consuming components will stop working completely until the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J9/06
CPCH02J9/061
Inventor 刘熙旺张永生郭雅萍李基源仲兆峰郭伟文
Owner HITACHI BUILDING TECH GUANGZHOU CO LTD
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