Trickle charging circuit based on super capacitor

A supercapacitor and trickle charging technology, which is applied in battery circuit devices, circuit devices, safety/protection circuits, etc., can solve problems such as the inability to continue trickle charging, improve work efficiency and reliability, realize efficient utilization, and improve Defects and Insufficient Effects

Pending Publication Date: 2020-02-14
中国船舶重工集团公司第七0五研究所
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Problems solved by technology

[0005] In order to solve the problem that the traditional supercapacitor charging circuit cannot continue trickle charging after the capacitor voltage reaches the rated voltage, the present invention uses the

Method used

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  • Trickle charging circuit based on super capacitor
  • Trickle charging circuit based on super capacitor
  • Trickle charging circuit based on super capacitor

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[0015] The present invention will now be further described in conjunction with the embodiments and drawings:

[0016] The invention relates to a trickle charging circuit based on supercapacitors, which adopts DC / DC isolation and voltage stabilization to provide charging power, utilizes triode expansion function to realize high current charging, and uses triode characteristics to form a voltage difference to ensure that the supercapacitor voltage is established Can provide trickle charging.

[0017] The circuit principle is as figure 1 As shown, it mainly includes the following functional parts:

[0018] a) DC / DC conversion unit;

[0019] b) Current limiting protection unit;

[0020] c) Triode drive unit.

[0021] The DC / DC conversion unit mainly realizes the function of voltage stabilization and filtering for multi-input power conversion of different voltages, mainly including anti-reverse irrigation diodes D1, D2,...Dn, input filter capacitors C1, C2, C3, DC / DC conversion power supply ...

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Abstract

The invention relates to a trickle charging circuit based on a super capacitor, comprising a DC/DC conversion unit, a current-limiting protection unit and a triode driving unit. The working characteristics of a triode and the characteristics of a micro leakage current diode are utilized to realize trickle charging of a super capacitor and reduce the leakage current loss in the circuit. Compared with a traditional existing super capacitor charging circuit, the trickle charging circuit has the characteristics of trickle charging, controllable current and the like, and the capacity of the super capacitor can be utilized at the maximum efficiency.

Description

technical field [0001] The invention belongs to the technical field of circuit design, and in particular relates to a trickle charging circuit based on a supercapacitor, which is suitable for charging an energy storage supercapacitor in a weak current and low power consumption control system. Background technique [0002] At this stage, in order to realize the on-duty work in the field of industrial and electrical control, supercapacitors are used as backup power supplies, and the fast charging and slow discharging functions of supercapacitors are used to achieve the purpose of independent and sustainable work of the system independent of the original power supply. Capacitors can be charged in several ways. [0003] The traditional supercapacitor charging method uses an RC circuit to realize capacitor charging. This method realizes the control of the charging current by adjusting the resistance value. This method has the characteristics that the initial charging current is l...

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Application Information

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IPC IPC(8): H02J7/00H02J7/34
CPCH02J7/0029H02J7/345Y02E60/10
Inventor 潘进王凯国吴斌亢凯谢彬拓勇
Owner 中国船舶重工集团公司第七0五研究所
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