Automatic-switching and soft-power-off realizing device based on low-voltage DC power supply

A low-voltage direct current, soft shutdown technology, applied in the direction of circuit devices, emergency power supply arrangement, electrical components, etc., can solve the problems of embedded systems that are difficult to use low-voltage direct current power supply, and achieve the effect of reliable dual power supply environment and guaranteed benefits

Inactive Publication Date: 2014-09-10
重庆能工科技发展有限公司
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  • Abstract
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  • Application Information

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  • Automatic-switching and soft-power-off realizing device based on low-voltage DC power supply
  • Automatic-switching and soft-power-off realizing device based on low-voltage DC power supply

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Embodiment Construction

[0014] Further description will be made below in conjunction with the accompanying drawings.

[0015] see figure 1 , a device based on low-voltage direct current power supply self-injection and soft shutdown, including main power supply 1, backup power supply 6, main power supply detection module 2, power switching module 3, power supply control module 4 and backup power supply access control module 5, wherein all The power output end of the main power supply 1 is connected to one of the input ends of the power switching module 3; the power output end of the backup power supply 6 is connected to the input end of the backup power access control module 5, and the output end of the backup power access control module 5 It is connected with another input terminal of the power switching module 3; the output terminal of the power switching module 3 is connected with the power control module 4, and the output terminal is also connected with an external load; the control signal output ...

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Abstract

The invention relates to an automatic-switching and soft-power-off realizing device based on a low-voltage DC power supply. A main power supply of the device is connected with one of input ends of a power supply switching module. A standby power supply is connected with an input end of a standby-power-supply connection control module. An output end of the standby-power-supply connection control module is connected with another input end of the power supply switching module. An output end of the power supply switching module is connected with a power supply control module and the output end is also externally connected with a load. A control signal output port of the power supply control module is connected with a control end of the standby-power-supply connection control module. The first power-on operation of the automatic-switching and soft-power-off realizing device must be powered on by the main power supply. When power supplying of the main power supply is cut off, the standby power supply is capable of being rapidly and automatically switched to a power supplying network. And when the power supplying of the main power supply is restored, the main power supply is switched to for power supplying. When the standby power supply is used for power supplying, power-off of a system can be realized so that the electricity of the standby power supply can be saved to the largest degree.

Description

technical field [0001] The invention relates to a backup power self-switching device, in particular to the temporary power supply of the backup power in an embedded system and the soft shutdown of the system when the backup power is used. Background technique [0002] Most of the existing embedded systems use one power supply mode. When the power supply is cut off in this way, the entire system will fall into the power-down mode and cannot run, so that it cannot make necessary actions when the power is off, resulting in unnecessary Loss. [0003] Most of the existing power automatic switching devices are based on the high-voltage alternating current system. For example, the patent number is 201120500992.6. purpose of intermittent power supply. Such devices are difficult to implement in embedded systems that use low-voltage DC power supplies. Contents of the invention [0004] Aiming at the deficiencies of the prior art, the present invention provides a backup power self...

Claims

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Application Information

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IPC IPC(8): H02J9/06
CPCY02B70/30Y04S20/20
Inventor 申中南吴海东
Owner 重庆能工科技发展有限公司
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