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Micro-energy acquisition circuit, acquisition device and power supply method

A technology for collecting circuits and micro-energy, applied to circuit devices, battery circuit devices, current collectors, etc., can solve problems such as low overall efficiency, large chances of using backup batteries, and insufficient battery charging cycles

Active Publication Date: 2022-02-25
成都飞英思特科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Converting light, heat, radio waves, vibrations, etc. in the environment into electrical energy and collecting it is usually called micro-energy collection. In the prior art, micro-energy collection is mostly for direct use or DC / DC after the converted electric energy is stored. After conversion, there is no dynamic adjustment and management of input power and charge storage, and when the charge storage device is in a full state, power collection is abandoned, resulting in low overall efficiency of power conversion
On the other hand, in order to ensure the continuous workability of the system, it is often necessary to install a backup battery in the system. Because of the low overall efficiency of the micro-energy collection in the prior art, the chance of using the backup battery is large, and the overall length of battery replacement or battery charging is extended. The cycle is not obvious enough

Method used

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  • Micro-energy acquisition circuit, acquisition device and power supply method
  • Micro-energy acquisition circuit, acquisition device and power supply method
  • Micro-energy acquisition circuit, acquisition device and power supply method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0062] Example 1, see figure 1 with figure 2 .

[0063] A micro energy collection circuit, comprising an input port 101, a first control switch, a second control switch 103, a third control switch 104, a fourth control switch 105, a fifth control switch 106, and a first control switch for connecting to a first charge storage A charge storage port 107, a second charge storage port 108 for connecting the second charge storage, a third power supply port 109, a first detection circuit 110, a buffer 111, a third detection circuit 112, a second detection circuit 113, a positive AND gate 114, NOR gate 115, seventh control switch 116, eighth control switch 117, ninth control switch 118 and output port 119;

[0064] The first control switch, when the seventh control switch 116 is turned on, the first control switch is turned off; when the seventh control switch 116 is turned off, the first control switch receives input from the input port 101 and outputs to the first charge storage ...

Embodiment 2

[0092] Example 2, see image 3 .

[0093] In this embodiment, a low dropout voltage regulator 200 is also included, the second charge storage port 108 is connected to the fourth control switch 105 through the low dropout voltage regulator 200, and when the control terminal of the low dropout voltage regulator 200 receives the ninth control signal Output, stop output when receiving the tenth control signal.

[0094] The input end of the low dropout voltage regulator 200 is connected with the output end of the second control switch 103; the input end of the fourth control switch 105 and the power supply pin of the buffer 111 are all connected with the output end of the low dropout voltage regulator 200; The control terminal of the differential voltage regulator 200 and the input terminal of the buffer 111 are connected to the output terminal of the third detection circuit 112 , and the output terminal of the low dropout voltage regulator 200 is connected to a second capacitor C...

Embodiment 3

[0097] Example 3, see Figure 4 .

[0098] In this embodiment, a DC conversion circuit is arranged at the back end of the input port 101 to boost the voltage as the output of the input port 101 .

[0099] The DC conversion circuit is a DC / DC conversion circuit 300, including a DC / DC converter U1; the EN pin and the VIN pin of the DC / DC converter U1 pass through a filter circuit and an input port formed by a fifth resistor R5 and a seventh capacitor C7 101 is connected; the SW pin of the DC / DC converter U1 is connected to the input port 101 after passing through an inductor L1. The FB pin and OUT pin of the DC / DC converter U1 pass through the output circuit composed of the sixth resistor R6, the seventh resistor R7 and the sixth capacitor C6, etc., and simultaneously connect with the input end of the first control switch 102 and the second control switch 103 input connection.

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Abstract

The invention relates to the technical field of micro-energy power supply, in particular to a micro-energy acquisition circuit, an acquisition device and a power supply method. According to the micro-energy collection device, the electrolytic capacitor, the super capacitor and the battery are arranged, through detection and logic control, the electric energy converted by the micro-energy power supply firstly charges the electrolytic capacitor, and when the electrolytic capacitor can provide electric energy to the outside, the super capacitor charges the electrolytic capacitor. After the electrolytic capacitor supplies electric energy to the outside, the voltage drops, and the electric energy is converted into supplementary charging for the electrolytic capacitor in time. When the micro-energy power supply stops converting electric energy, the system is switched to the super capacitor to supply power to the outside. When both the electrolytic capacitor and the super capacitor are discharged, the system is switched to the battery for power supply. As long as the micro-energy power supply has electric energy conversion, the acquisition device preferentially switches back to the electrolytic capacitor to supply electric energy to the outside. While the overall efficiency of micro energy collection is improved, few or even no standby battery is used, so that the standby battery is basically in a self-discharge state.

Description

technical field [0001] The invention relates to the technical field of micro-energy power supply, in particular to a micro-energy collection circuit, a collection device and a power supply method. Background technique [0002] Whether it is an industrial occasion or a daily occasion, sensors, control switches, etc. are essential basic devices. Whether it is power supply or signal transmission, wires are usually required for connection. Signal transmission can be wireless and does not require wire connection, but power supply usually still needs to lay wires. In order to solve the power supply problem, battery power supply can also be used, but the general battery capacity is limited, and the battery needs to be replaced or charged regularly after the battery power is exhausted. Light, heat, radio waves, vibrations, etc. in the environment can be converted into electrical energy under certain conditions. When light, heat, radio waves, vibrations in the environment are conv...

Claims

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Application Information

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IPC IPC(8): H02J7/34H02J7/00
CPCH02J7/345H02J7/00712H02J2207/20
Inventor 邹珂潘衡周勇兴
Owner 成都飞英思特科技有限公司
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