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Power supply management circuit with automatic on-off switched capacitor network

A technology of switched capacitor network and capacitor network, which is applied to battery circuit devices, circuit devices, collectors, etc., can solve the problems of inability to realize self-on-off, energy loss is unfavorable to energy harvesting applications, etc., and achieve high energy utilization efficiency, charging The effect of fast speed and reduced loss

Pending Publication Date: 2020-04-07
CHONGQING UNIV OF POSTS & TELECOMM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In the past, in the design of switched capacitor network circuits, the control of the switch is usually controlled by a microcontroller, which cannot achieve self-on-off
Also, the power loss caused by the microcontroller is very detrimental to energy harvesting applications

Method used

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  • Power supply management circuit with automatic on-off switched capacitor network
  • Power supply management circuit with automatic on-off switched capacitor network
  • Power supply management circuit with automatic on-off switched capacitor network

Examples

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Embodiment Construction

[0030] Embodiments of the present invention are described below through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific implementation modes, and various modifications or changes can be made to the details in this specification based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the diagrams provided in the following embodiments are only schematically illustrating the basic concept of the present invention, and the following embodiments and the features in the embodiments can be combined with each other in the case of no conflict.

[0031] Wherein, the accompanying drawings are for illustrative purposes only, and represent only schematic diagrams, rather than physical drawings, and should...

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Abstract

The invention relates to a power supply management circuit with an automatic on-off switched capacitor network, and belongs to the field of power supply management circuits. The power supply management circuit comprises a rectification circuit, a switch capacitor network circuit, an auxiliary power supply and MOSFET control circuit, and a DC-DC buck voltage stabilization output circuit. The rectification circuit is a bridge type full-wave rectification circuit composed of four Schottky barrier diodes; the switch capacitor network circuit comprises a series charging loop composed of a high-withstand-voltage small-capacitance electrolytic capacitor and a low-forward-breakover-voltage high-reverse-breakdown-voltage diode, and the N-channel enhanced MOSFETs are connected with a parallel discharging loop composed of the positive electrode and the negative electrode of the electrolytic capacitor respectively. The method can be applied to the field of micro-power energy collection, the capacitor charging time is greatly shortened, and the energy utilization efficiency is improved.

Description

technical field [0001] The invention belongs to the field of power management circuits and relates to a power management circuit with a self-on-off switching capacitor network. Background technique [0002] Energy harvesting technology is an emerging technology that collects stray energy from the environment, such as electric field energy, electromagnetic energy, vibration energy, friction energy, etc., and converts the acquired energy into electric energy with stable voltage output to drive low-power consumption power modules. Around the power line, there is electric field energy with low energy density; on factory machine tools, conveyor belts and other mechanical equipment, there are vibration energy and friction energy with higher voltage and lower current. In the previous research on energy harvesting technology, different energy harvesters were designed according to different energies, and the energy in the stray state in the environment was converted into electrical e...

Claims

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Application Information

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IPC IPC(8): H02J7/02H02J7/00
CPCH02J7/02Y02B70/10
Inventor 张佳佳李杰严冬王平田兴亮欧德旭古静
Owner CHONGQING UNIV OF POSTS & TELECOMM
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