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Secondary power supply device and secondary power supply method for prolonging working time of primary load

A technology of working hours and electrical devices, applied in the direction of circuit devices, electrical components, emergency power supply arrangements, etc., can solve the problems of consumption, reduce the working time of main loads, do not distinguish between main loads and secondary loads, etc., and achieve the purpose of prolonging the backup time Effect

Inactive Publication Date: 2013-03-27
EAST GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the energy reserve of the battery is limited. At present, in most cases, the load is directly connected to the uninterruptible power supply without distinguishing between the main load and the secondary load. In this way, the secondary load will consume extra energy and reduce the main load. working hours

Method used

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  • Secondary power supply device and secondary power supply method for prolonging working time of primary load
  • Secondary power supply device and secondary power supply method for prolonging working time of primary load
  • Secondary power supply device and secondary power supply method for prolonging working time of primary load

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Embodiment 1

[0034] figure 1 It is a functional module block diagram of the secondary power-off device system provided by the embodiment of the present invention for extending the working time of the main load. This embodiment provides a secondary power-off device for prolonging the working time of the main load, such as figure 1 As shown, the device includes: a voltage threshold providing module 101 , a voltage sampling module 102 , a control signal generating module 103 and an on-off operation module 104 .

[0035] The voltage sampling module 102 is connected with the uninterruptible power supply; it is used for sampling the voltage of the uninterruptible power supply and providing sampling voltage. The voltage threshold providing module 101 is configured to provide a preset voltage as a threshold voltage for whether to supply power to the secondary load. The control signal generating module 103 is used to generate the control signal; the voltage sampling module 102 and the voltage thr...

Embodiment 2

[0054] image 3 It is a schematic circuit diagram of a secondary power-off device for prolonging the working time of main loads provided by Embodiment 2 of the present invention when three-phase power is used or the load is relatively large. Such as image 3 As shown, when three-phase power is used or the load is large, the relay can be used to control the AC contactor to realize the secondary power-off of the secondary load. Specifically, since the first part of the circuit in this embodiment is the same as that in Embodiment 1, the same parts will not be described again.

[0055] In addition to the first relay, the final control circuit of this embodiment also includes a second relay. The second relay can control multiple switches. One end of the switch part of the first relay is connected to the positive pole of a DC power supply, and the other end is connected to the second relay One end of the coil, the other end of the second relay coil is connected to the zero line of...

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Abstract

The invention provides a secondary power supply device and a secondary power supply method for prolonging working time of a primary load. The device comprises a voltage threshold providing module, a voltage sampling module, a control signal generation module and a make-break operation module, wherein the voltage sampling module is connected with an uninterruptible power system and used for voltage sampling of the uninterruptible power system, the voltage threshold providing module is used for providing preset voltage, the voltage sampling module and the voltage threshold providing module are both connected with the control signal generation module, the control signal generation module is further connected with the make-break operation module, and the make-break operation module is used for controlling make and break of a secondary module and the uninterruptible power system. By the aid of the secondary power supply device and the secondary power supply method, the working time of the primary load is prolonged in a battery mode of the uninterruptible power system. When a mains supply is interrupted, and battery voltage is decreased to the preset voltage, power supply to a secondary load is cut off automatically; and after the mains supply restores to normal, the disconnected secondary load is supplied with power again, so that backup time of the main load is prolonged.

Description

technical field [0001] The invention relates to the technical field of electronic circuits, in particular to a secondary power-off device and method for prolonging the working time of main loads. Background technique [0002] Uninterruptible Power System UPS (Uninterruptible Power System UPS) is a constant voltage and constant frequency uninterruptible power supply containing energy storage devices, mainly used to provide uninterrupted power supply for power electronic equipment. When the mains input is normal, the uninterruptible power supply stabilizes the mains and supplies it to the load. At this time, the uninterruptible power supply is an AC mains voltage stabilizer, and it also charges the battery inside the machine; when the mains is interrupted (Accidental power outage), the uninterruptible power supply immediately converts the electric energy of the battery inside the machine to continue supplying power to the load through the method of inverter conversion, so as t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/14H02J9/06
CPCY04S20/248Y02B70/3291Y02B70/3225Y04S20/222Y02B70/30
Inventor 梁宇
Owner EAST GRP CO LTD
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