Super capacitor charging-discharging and reverse protection circuit
A reverse-connection protection circuit, super capacitor technology, applied in emergency protection circuit devices, battery circuit devices, circuit devices, etc., can solve the problems of complex hardware circuits, low reliability and high cost
Inactive Publication Date: 2015-07-29
江苏品源电子科技有限公司
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Problems solved by technology
[0003] However, for the supercapacitor charging control circuit, due to the unreasonable structural design, it has defects such as complex hardware circuit, low reliability, high cost, low power supply efficiency, and time-consuming.
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[0015] The supercapacitor charging and discharging and reverse connection protection circuit of the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0016] As shown in the figure, the supercapacitor charging and discharging and reverse connection protection circuit of the present invention includes the charging of the BUCK circuit and the discharging circuit connected between the charging head and the tail of the BUCK circuit. The said discharging circuit is composed of two diodes DB1 connected in parallel. Two diodes DB1 are connected in parallel to the input and output ends of the BUCK circuit charging; the BUCK charging circuit is connected to the reverse connection protection circuit and the undervoltage protection circuit after passing through the parallel capacitors CB8, CB7, CB6 and resistor RB2, and the reverse connection protection circuit is good for undervoltage protection. The outpu...
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The invention discloses a super capacitor charging-discharging and reverse protection circuit. The super capacitor charging-discharging and reverse protection circuit comprises a BUCK charging circuit and a discharging circuit parallelly connected in the BUCK charging circuit; the BUCK charging circuit is connected to a reverse protection circuit and an under-voltage protection circuit after passing through the parallelly-connected output capacitor and output resistor; and the output end of the reverse protection circuit and the output end of the under-voltage protection circuit are connected to a relay KA1B. After the structure is used, the BUCK charging circuit is used for charging, the efficiency is high, and the charging current is large; a diode is directly used for achieving the discharging function, the discharging efficiency is high, and the circuit structure is simple; while the capacitor is reversely connected, the capacitor is not charged by the circuit if the circuit cannot detect the electric potential; otherwise, the voltage is detected, the circuit controls the relay to be closed for charging the capacitor; and while the capacitor is the under-voltage, the correlation of the capacitor and the load is completely broken, and the capacitor is located in a floating state, so the capacitor cannot be located in the state of 0 V all the time because of the connection with the load, and the next time of charging is started conveniently. The structure is simple, the cost is low, and the efficiency is high.
Description
Technical field [0001] The present invention involves a power supply circuit, which is specifically a super capacitor charging and discharge and reverse protection circuit. Background technique [0002] Super capacitance is an ultra -large capacity energy storage device. Compared with conventional capacitors, it is thousands of times the conventional capacitance capacity at the same volume. It has a long cycle service life, wide working temperature range, fast charging speed, power power, powerThe characteristics of high density have received widespread attention from all walks of life, [0003] However, for the charging control circuit of super capacitors, due to the unreasonable structural design, it has complicated hardware circuit, low reliability, high cost, low power efficiency, and time consumption. Invention content [0004] The technical problem to be solved by the present invention is to provide a super capacitor with a simple, low -cost, and high -efficiency supercapa...
Claims
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IPC IPC(8): H02J7/00H02H7/16H02H11/00
CPCY02E60/10
Inventor 陈巨坤陈福松
Owner 江苏品源电子科技有限公司