Flyback switching power supply for storage battery

A technology of switching power supply and high-frequency switching power supply, which is applied to battery circuit devices, current collectors, electric vehicles, etc., can solve the problems of low reliability of flyback switching power supply and easy damage of power transistors, etc. The effect of low wave voltage and high reliability charging

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Problems solved by technology

However, the rated voltage of the existing power transistors is generally less than or equal to 600V, so the power transistors on the primary side of the flyback transformer are overloaded, causing the power transistors to be easily damaged, which in turn leads to low reliability of the entire flyback switching power supply

Method used

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  • Flyback switching power supply for storage battery

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Embodiment Construction

[0022] Below in conjunction with accompanying drawing, technical scheme of the present invention is described in further detail:

[0023] like figure 1 As shown, a flyback switching power supply for batteries, including AC input protection circuit, EMI filter circuit, rectifier circuit, filter circuit, high frequency switching power supply control module, clamping circuit, flyback transformer and DC output module ;in,

[0024] The AC input protection circuit, EMI filter circuit, rectifier circuit, filter circuit, high-frequency switching power supply control module, and DC output module are connected in sequence. The flyback transformer is connected to the filter circuit, clamp circuit, and DC output module respectively. The clamp circuit Connect with the high-frequency switching power supply control module;

[0025] The clamping circuit includes first to fourth resistors, capacitors and first to third diodes, one end of the first resistor, one end of the second resistor, on...

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Abstract

The invention discloses a flyback switching power supply for a storage battery. The power supply comprises an alternating current input protection circuit, an EMI filter circuit, a rectification circuit, a filter circuit, a high-frequency switching power supply control module, a clamping circuit, a flyback transformer and a direct current output module; the alternating current input protection circuit, the EMI filter circuit, the rectification circuit, the filter circuit, the high-frequency switching power supply control module and the direct current output module are sequentially connected, the flyback transformer is connected with the filter circuit, the clamping circuit and the direct current output module separately, and the clamping circuit is connected with the high-frequency switching power supply control module. The flyback switching power supply can achieve the efficient, fast, low-power-consumption and high-reliability function of charging the storage battery.

Description

technical field [0001] The invention relates to the technical field of power supplies, in particular to a flyback switching power supply for storage batteries. Background technique [0002] Due to the continuous consumption of non-renewable energy in the world, countries all over the world are vigorously promoting the development and application of new energy vehicles. At present, domestic new energy vehicles mainly include alternative fuel vehicles, electric vehicles and fuel cell vehicles. Among them, the development of electric vehicles is the most mature, and the preparations for industrialization have been basically completed, and the industrial chain of electric vehicles has initially formed. Power batteries related to electric vehicles are mainly divided into two types: lead batteries and lithium-ion batteries in terms of material composition. Among them, lead batteries have a long history of application, mature technology, and low cost. The internal structure of lea...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M3/335H02M1/32H02J7/00
CPCH02M1/32H02M3/33523H02J2207/20H02J7/00
Inventor 马春秀黄欢徐志强张恒杰
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