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Micro energy harvesting management system with low voltage start and voltage monitoring function

A low-voltage startup and voltage monitoring technology, applied in electric vehicles, battery circuit devices, current collectors, etc., can solve the problems of slow enough to meet the normal power consumption of the system load chip, abnormal system operation, etc., to ensure normal power consumption and expand space. range, the effect of improving sensitivity

Active Publication Date: 2021-08-24
湖北集慧科技有限公司
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  • Application Information

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Problems solved by technology

[0007] At the same time, when the existing micro-energy collection management system is working, the system load chip and other chips are often working all the time. When the system collects energy slowly, it is very slow to meet the normal power consumption of the system load chip, which leads to the failure of the system to work. abnormal

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  • Micro energy harvesting management system with low voltage start and voltage monitoring function
  • Micro energy harvesting management system with low voltage start and voltage monitoring function

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Embodiment Construction

[0065] In order to understand the technical features, objects and effects of the present invention, specific embodiments of the present invention will be described in detail with reference to the accompanying drawings.

[0066] Reference Figure 1 , Figure 1 It is a low voltage startup and has a voltage monitoring function of a voltage monitoring function, a circuit schematic (the cross intersection below Q5 is not connected), which can be started at 0.7V, 360NA. The collection management system includes: the first energy storage device C1, the first voltage monitoring chip U1, the first N-type switch tube Q1, the first pull-up resistor R1, the first P-type switch tube Q2, the second N-type switch tube Q3, Input Capacitor C2, DC / DC Conversion Chip U2, Second Energy Transmission Device C3, Second P-type MOS Tube Q4, Second Voltage Monitoring Chip U3, Second pull-up resistor R2, third N-type MOS tube Q5, first The voltage limit resistor R3, the second voltage limit stream resistor ...

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Abstract

The invention discloses a micro-energy collection management system with low-voltage startup and voltage monitoring function. The invention realizes the micro-energy collection and power management system that can be started at 0.7V, 360nA, and reduces the startup power of energy collection to 0.252μW , can significantly improve the sensitivity of energy harvesting; the present invention can be used for energy harvesting in environments such as weak light, low vibration intensity, small temperature difference, etc., and the present invention is especially suitable for scenarios based on radio frequency energy harvesting; through experiments, the present invention can run The minimum RF input power of -20.5dBm@915MHz can effectively expand the spatial range of RF energy collection; at the same time, by adding the voltage monitoring function, it can ensure the normal power consumption of the system.

Description

Technical field [0001] The present invention relates to the field of microefficient collection, and more particularly to a low voltage startup and a microefficient collection management system for voltage monitoring functions. Background technique [0002] Energy collection is a key technique for the long-term maintenance-free operation of low-power circuit systems such as passive networking. By capturing these energy in the environment, such as illumination, temperature difference, vibration, and electromagnetic wave (radio frequency energy), low-power electronic devices can be made normally. In these micro-power energy, the energy from the radio frequency transmitter has a unique advantage, including the power of the distance, which can make the passive Internet network away from the battery and wired power supply. [0003] Environmental RF energy can now be obtained from billions of wireless transmitters around the world, and the number of transmitters is growing, including mo...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J50/20H02J50/90H02J50/80H02J7/04H02J7/34
CPCH02J7/345H02J50/20H02J50/80H02J50/90
Inventor 谢桂辉焦向开徐浪魏权刘子扬
Owner 湖北集慧科技有限公司