A switching power supply circuit of a fire emergency power supply
A switching power supply circuit, fire emergency technology, applied in the direction of emergency protection circuit devices, high-efficiency power electronic conversion, electrical components, etc., can solve the problems of great influence on standby power consumption, system paralysis, large standby power consumption of fire emergency power supply, etc., to achieve The effect of low standby power consumption
Active Publication Date: 2016-08-31
SICHUAN GELAI FIRE FIGHTING ELECTRICAL APPLIANCE EQUIP
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Problems solved by technology
For the fire emergency power supply, the design of its switching power supply has a great influence on the standby power consumption of the whole system. If the design is not appropriate, it will lead to a large standby power consumption of the fire emergency power supply.
At the same time, the current switching power supply circuit does not involve the self-locking of the fire emergency power supply. When the control system fails, forcibly supplying power to the control system will not only expand the fault, but also lead to the paralysis of the entire system, increasing the maintenance cost
Method used
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[0023] The present invention will be further described in detail below in conjunction with the accompanying drawings, so that those skilled in the art can implement it with reference to the description.
[0024] Such as Figure 1-2 As shown, the present invention provides a switching power supply circuit of a fire emergency power supply, wherein the circuit includes: a storage battery P4, which provides the original power supply for the switching power supply circuit; an output module, which is electrically connected to the storage battery through a transformer, The multi-stage power supply voltage [u1v1; u2v2; u3v3; u4v4; +24v] for the normal operation of the fire emergency power supply is output through the transformer; the switching power supply chip U1 is arranged between the battery and the output module, It is used to control the battery to supply power to the output module, and stabilize the output power supply voltage of the output module; switch machine self-locking c...
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The invention discloses a switching power supply circuit of a firefighting emergency power supply. The circuit comprises a storage battery, an output module, a switching power supply chip and a startup and shutdown self-locking circuit, wherein the storage battery is used for providing an original power supply for the switching power supply circuit, the output module is electrically connected with the storage battery through a transformer and is subjected to voltage transformation of the transformer for outputting multi-stage power supply voltage allowing the firefighting emergency power supply to normally work, the switching power supply chip is arranged between the storage battery and the output module and is used for controlling the storage battery to transmit power to the output module and stabilizing the output power supply voltage of the output module, and the startup and shutdown self-locking circuit is selectively and electrically connected with the switching power supply chip and realizes startup and shutdown for work of the switching power supply chip for realizing self-locking of the switching power supply. The switching power supply circuit of the firefighting emergency power supply provided by the invention enables the standby power consumption of the firefighting emergency power supply to be low, and can be used for detecting whether a control system of the firefighting emergency power supply has a fault or not, so that the expansion of the fault is avoided.
Description
technical field [0001] The invention relates to a circuit design of a fire-fighting emergency power supply, in particular to a switching power supply circuit suitable for a fire-fighting emergency power supply. Background technique [0002] At present, fire emergency power supply plays an important role in our life. For the fire emergency power supply, the design of its switching power supply has a great influence on the standby power consumption of the whole system. If the design is not appropriate, the standby power consumption of the fire emergency power supply will be large. At the same time, the current switching power supply circuit does not involve the self-locking of the fire emergency power supply. When the control system fails, forcibly supplying power to the control system will not only expand the fault, but also lead to the paralysis of the entire system, increasing the maintenance costs. Contents of the invention [0003] In order to solve the above problems...
Claims
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IPC IPC(8): H02H7/10H02M1/092
CPCY02B70/10
Inventor 任宇华梁军苏伟
Owner SICHUAN GELAI FIRE FIGHTING ELECTRICAL APPLIANCE EQUIP