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Ultra-low-voltage boosting system and control method thereof

A technology of boosting system and control method, which is applied in control/regulating systems, instruments, regulating electrical variables, etc., can solve problems such as unsolved positive and negative bipolar input sources, difficulty in boosting multiples and boosting efficiency, etc. Achieve the effect of improving conversion efficiency, large boost multiple, and reducing switching loss

Inactive Publication Date: 2013-07-24
XIDIAN UNIV
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Problems solved by technology

And combined with its control method, it can effectively avoid the defect that the circuit of traditional technology is difficult to adapt to the environmental energy harvesting working under the millivolt voltage, and can avoid the current technology that is difficult to take into account the boost multiple and boost efficiency at the same time and has not yet solved the positive and negative bipolar flaws in the question of sexual input sources

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  • Ultra-low-voltage boosting system and control method thereof
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  • Ultra-low-voltage boosting system and control method thereof

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Embodiment Construction

[0024] The present invention will be further described below by specific embodiment:

[0025] Such as figure 1 As shown, the ultra-low voltage boost system includes an open-circuit voltage sampling and holding device 102, a polarity detection and control signal generator 103, a primary switching tube 104, a flyback transformer 105, a rectifier bridge 106, an energy storage element 107 and a single-chip microcomputer 108, The open-circuit voltage sampling and holding device 102 is connected with the output source of weak energy or the transducer 101, and the open-circuit voltage sampling and holding device 102 is also connected with the single-chip microcomputer 108, the polarity detection and control signal generator 103 and the flyback transformer 105 in addition. connection, the single-chip microcomputer 108 is used to output the sampling signal SAMP and the holding signal HOLD; the first-stage switching tube 104 is connected with the polarity detection and control signal ge...

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Abstract

The invention relates to an ultra-low-voltage boosting system and a control method thereof. The ultra-low-voltage boosting system comprises an open-circuit voltage sampling holder, a polarity detection and control signal generator, a first-level switch tube, a flyback transformer, a rectifier bridge, an energy storage element and a singlechip, wherein the open-circuit voltage sampling holder is connected with a weak-energy output source or an energy converter and is also connected with the singlechip, the polarity detection and control signal generator and the flyback transformer; the first-level switch tube is connected with the polarity detection and control signal generator and the flyback transformer; the flyback transformer is connected with the rectifier bridge; and the rectifier bridge is connected with the energy storage element. By combining the ultra-low-voltage boosting system with the control method thereof, the defect that the circuit produced by a conventional process has difficulty in adapting to the working under a millivolt-level voltage in the field of environmental energy collection can be effectively avoided, and the defects that the boosting multiple and the boosting efficiency are very difficultly considered simultaneously in the prior art and the problem that an positive-negative bipolar input source is unresolved can be avoided.

Description

technical field [0001] The invention belongs to the technical field of voltage conversion and power supply modules, and in particular relates to an ultra-low voltage boost system and its control method, in particular to an ultra-low voltage boost system and its control method in the field of environmental energy collection, which can control the output of weak energy The weak voltage signal output by the source or transducer is boosted and stored for long-term power supply for low-power devices such as wireless sensors. Background technique [0002] Since the input voltage of the power supply voltage converter is getting lower and lower, even the turn-on voltage is only tens of mV, and its own conversion efficiency also affects the utilization rate of electric energy. For extremely weak electrical energy output sources, such as thermal energy (solar heat, geothermal, temperature change, etc.) transducers, electromagnetic energy (light, electromagnetic waves, etc.) transducer...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M3/335
Inventor 史军刚李小平刘彦明谢楷郭世忠黎剑兵方建平
Owner XIDIAN UNIV
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