CN204886263U - Super capacitor control circuit that discharges - Google Patents
Super capacitor control circuit that discharges Download PDFInfo
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- CN204886263U CN204886263U CN201520530732.1U CN201520530732U CN204886263U CN 204886263 U CN204886263 U CN 204886263U CN 201520530732 U CN201520530732 U CN 201520530732U CN 204886263 U CN204886263 U CN 204886263U
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Abstract
The utility model discloses a super capacitor control circuit that discharges, including power supply circuit, super capacitor charging circuit and the super capacitor discharge circuit and the control circuit that discharges, power supply circuit connects the main power source, super capacitor charging circuit includes super capacitor and the current -limiting resistor who establishes ties with super capacitor, and super capacitor charging circuit's both ends meet power supply circuit's positive output end and cathode output respectively, and the super capacitor discharge circuit includes charging circuit 1, and charging circuit 1 and current -limiting resistor connect, the control circuit that discharges includes main mains voltage sense terminal and control signal output, discharge control circuit's control signal output of electronic switch's control termination. The utility model discloses an electronic switch is opened when detecting main power supply lost promptly to dawn, and super capacitor passes through electronic switch level circuit power supply backward. The energy that can avoid super capacitor dissipates on the current -limiting resistor that charges with the form that the hot merit consumes, transmits more available energies for back level circuit, has improved super capacitor's discharge efficiency.
Description
[technical field]
The utility model relates to track traffic air-conditioner controller, particularly relates to a kind of super capacitor charge/discharge control circuit of track traffic air-conditioner controller.
[background technology]
When the super capacitor of FPGA (Field Programmable Gate Array) track traffic air-conditioner controller powers on and charges, need current-limiting resistance, prevent moment shorted to earth.Usually this charging current limiter resistance is all than the equivalent internal resistance several times greatly of super capacitor itself, but, when discharging, this charging current limiter resistance is also connected in discharge loop, the form that a lot of energy when discharging all is consumed with heat power consumption on this current-limiting resistance dissipates, and reduces the efficiency of circuit.
[summary of the invention]
The technical problems to be solved in the utility model is to provide one can improve super capacitor discharging efficiency, makes more energy flow to the super capacitor charge/discharge control circuit of successive load.
In order to solve the problems of the technologies described above, the technical solution adopted in the utility model is, a kind of super capacitor charge/discharge control circuit, and comprise power circuit, super capacitor charging circuit and super capacitor discharge circuit and charge/discharge control circuit, power circuit connects main power source; The current-limiting resistance that super capacitor charging circuit comprises super capacitor and connects with super capacitor, the two ends of super capacitor charging circuit connect cathode output end and the cathode output end of power circuit respectively, super capacitor discharge circuit comprises electronic switch, and electronic switch and current-limiting resistance also connect; Charge/discharge control circuit comprises main power voltage test side and control signal output, the control signal output of the control termination charge/discharge control circuit of electronic switch.
Above-described super capacitor charge/discharge control circuit, power circuit is reverse connection preventing back flow circuit, comprises diode and filter capacitor, and the anode of diode connects the positive pole of main power source, and the negative electrode of diode is the cathode output end of power circuit; The cathode output end of power circuit connects the ground of main power source, and filter capacitor is connected between the cathode output end of power circuit and cathode output end.
Above-described super capacitor charge/discharge control circuit, the cathode output end of the first termination power circuit of current-limiting resistance, the positive pole of the second termination super capacitor, the negative pole of super capacitor connects the cathode output end of power circuit; Described electronic switch is metal-oxide-semiconductor, and the source electrode of metal-oxide-semiconductor connects the first end of current-limiting resistance, and drain electrode connects the second end of current-limiting resistance; The grid of metal-oxide-semiconductor connects the control signal output of charge/discharge control circuit, is connect the cathode output end of power circuit by pull-up resistor simultaneously.
Above-described super capacitor charge/discharge control circuit, charge/discharge control circuit comprises NPN triode, the base stage of NPN triode detects as main power voltage the positive pole that termination connects main power source, and collector electrode exports the control end of termination electronic switch as control signal, and emitter connects the ground of main power source.
Above-described super capacitor charge/discharge control circuit, charge/discharge control circuit comprises base resistance, pull down resistor, input and output capacitors, the base stage of NPN triode connects the positive pole of main power source by base resistance, connect the emitter of NPN triode by pull down resistor; Input capacitance is connected between the positive pole of main power source and the emitter of NPN triode, and output capacitance is connected between the collector electrode of NPN triode and the emitter of NPN triode.
Above-described super capacitor charge/discharge control circuit, comprises DC/DC change-over circuit and load, and the electrode input end of DC/DC change-over circuit and earth terminal connect cathode output end and the cathode output end of power circuit respectively; The output terminating load of DC/DC change-over circuit.
The utility model super capacitor charge/discharge control circuit once main power source power down be detected, i.e. unlocking electronic switch, super capacitor by electronic switch to rear class circuit supply.The energy of super capacitor can be avoided to be dissipated on charging current limiter resistance with the form of heat power consumption, more effective energies are passed to late-class circuit, improve the discharging efficiency of super capacitor.
[accompanying drawing explanation]
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
Fig. 1 is the theory diagram of the utility model embodiment super capacitor charge/discharge control circuit.
Fig. 2 is the schematic diagram of the utility model embodiment charge/discharge control circuit.
Fig. 3 is the schematic diagram of the utility model embodiment main circuit.
[embodiment]
The principle of the utility model embodiment super capacitor charge/discharge control circuit as shown in Figure 1 to Figure 3, comprises power circuit, super capacitor charging circuit, super capacitor discharge circuit, DC/DC change-over circuit, load and charge/discharge control circuit.
Power circuit is reverse connection preventing back flow circuit, the input termination main power source 5V power supply circuits of reverse connection preventing back flow circuit, exports the current-limiting resistance R1 of termination super capacitor charging circuit, and super capacitor is charged by this current-limiting resistance R1.If main power source 5V power supply circuits are working properly, super capacitor E1 does not externally discharge.Charging current limiter resistance R1 one end is connected with the source electrode of metal-oxide-semiconductor Q1, and is connected with the output of reverse connection preventing back flow circuit; The charging current limiter resistance R1 other end drains with metal-oxide-semiconductor Q1 and is connected.The grid of metal-oxide-semiconductor Q1 is connected with the control signal Control of charge/discharge control circuit.
When main power source 5V power supply is normal, powered to the DC/DC change-over circuit of rear class by main power source 5V, 5V Power convert is become 3.3V power supply by DC/DC change-over circuit, and the load of supply rear class uses.Whether charge/discharge control circuit detects 5V main power source and powers normal, and when in 5V main power source power up and normal power supply process, control signal Control output low level, turns off source electrode and the drain electrode of metal-oxide-semiconductor Q1; When after the power down of 5V main power source, control signal Control exports high level, the source electrode of metal-oxide-semiconductor Q1 and drain electrode conducting.After metal-oxide-semiconductor Q1 conducting, its internal resistance is far smaller than charging resistor, and now, super capacitor E1 is discharged by the metal-oxide-semiconductor that this resistance is minimum, and the DC/DC circuit of supply back carries out voltage transitions.
Power circuit comprises a Schottky diode D1 and filter capacitor C1, C2.The anode of Schottky diode D1 connects the positive pole of 5V main power source, and negative electrode is the cathode output end of power circuit; The cathode output end of power circuit connects the ground of main power source, and filter capacitor C1 and C2 is connected between the cathode output end of power circuit and cathode output end.
Schottky diode D1 can effectively prevent front end 5V main power source power supply circuits from connecing instead, in addition, when after the power down of 5V main power source, prevents the circuit of super capacitor to other from discharging.
Super capacitor charging circuit comprises a current-limiting resistance R1 and super capacitor E1.The cathode output end of the first termination power circuit of current-limiting resistance R1, the positive pole of the second termination super capacitor E1, the negative pole of super capacitor E1 connects the cathode output end of power circuit.
Super capacitor E1 equivalent internal resistance is lower, and current-limiting resistance R1 will limit maximum charging current, effectively to prevent excessive charging current to the impact of 5V main power source power supply circuits.
Super capacitor discharge circuit comprises a metal-oxide-semiconductor Q1 and grid pull-up resistor R2.The source electrode of metal-oxide-semiconductor Q1 connects the first end of current-limiting resistance R1, and drain electrode connects second end of current-limiting resistance R1; The grid of metal-oxide-semiconductor Q1 connects the output of the control signal Control of charge/discharge control circuit, is connect the cathode output end of power circuit by pull-up resistor R2 simultaneously.
After metal-oxide-semiconductor Q1 conducting, its internal resistance is minimum, is equal to short circuit charging resistor R1, avoids in discharge process, and too much energy ezpenditure is on charging resistor R1.
DC/DC change-over circuit comprises the peripheral component of a DC/DC chip U1 and necessity as inductance L, C5, C6, R3, C4.The chip that U1 selects input voltage range wider, such as input voltage is between 2.5V to 5.5V, and its output can keep stable 3.3V.Make the energy of super capacitor E1 obtain higher utilization like this, also, longer power-on time can be provided for successive load.
L is the required inductance of DC/DC chip transfer process, and C6 is the required storage capacitor of DC/DC chip.
Load is the MCU circuit that a conventional 3.3V powers.
Charge/discharge control circuit comprises a NPN triode Q2 and base stage pull down resistor R5, electric capacity C9 are connected between the positive pole of main power source and the emitter of NPN triode Q2, between the collector electrode that electric capacity C6 is connected on NPN triode Q2 and emitter.Base resistance R4 connects the positive pole of 5V main power circuit and the base stage of triode Q1, is in normal power supply process or power-down state for detecting 5V main power source.The collector electrode of triode Q2 is connected with the grid of metal-oxide-semiconductor Q1, for conducting or the cut-off of control MOS.In 5V main power source power up, will make Q2 conducting, and metal-oxide-semiconductor Q1 base stage be dragged down, the grid of metal-oxide-semiconductor Q1 and source electrode pressure reduction increase, and metal-oxide-semiconductor Q1 internal resistance increases, until metal-oxide-semiconductor Q1 ends completely.Once the power down of 5V main power source, triode Q2 will end immediately, make the grid of metal-oxide-semiconductor Q1 equal with source voltage, and now, metal-oxide-semiconductor Q1 internal resistance reaches minimum, be equal to charging current limiter resistance R1 short circuit, discharge fully to late-class circuit.
The super capacitor charge/discharge control circuit of the above embodiment of the utility model, once main power source power down be detected, namely opens metal-oxide-semiconductor, super capacitor by metal-oxide-semiconductor to rear class circuit supply.The energy of super capacitor can be avoided to be dissipated on charging current limiter resistance with the form of heat power consumption, more effective energies are passed to late-class circuit, improve the discharging efficiency of super capacitor.
Claims (6)
1. a super capacitor charge/discharge control circuit, is characterized in that, comprise power circuit, super capacitor charging circuit and super capacitor discharge circuit and charge/discharge control circuit, power circuit connects main power source; The current-limiting resistance that super capacitor charging circuit comprises super capacitor and connects with super capacitor, the two ends of super capacitor charging circuit connect cathode output end and the cathode output end of power circuit respectively, super capacitor discharge circuit comprises electronic switch, and electronic switch and current-limiting resistance also connect; Charge/discharge control circuit comprises main power voltage test side and control signal output, the control signal output of the control termination charge/discharge control circuit of electronic switch.
2. super capacitor charge/discharge control circuit according to claim 1, it is characterized in that, power circuit is reverse connection preventing back flow circuit, comprises diode and filter capacitor, the anode of diode connects the positive pole of main power source, and the negative electrode of diode is the cathode output end of power circuit; The cathode output end of power circuit connects the ground of main power source, and filter capacitor is connected between the cathode output end of power circuit and cathode output end.
3. super capacitor charge/discharge control circuit according to claim 1, is characterized in that, the cathode output end of the first termination power circuit of current-limiting resistance, the positive pole of the second termination super capacitor, and the negative pole of super capacitor connects the cathode output end of power circuit; Described electronic switch is metal-oxide-semiconductor, and the source electrode of metal-oxide-semiconductor connects the first end of current-limiting resistance, and drain electrode connects the second end of current-limiting resistance; The grid of metal-oxide-semiconductor connects the control signal output of charge/discharge control circuit, is connect the cathode output end of power circuit by pull-up resistor simultaneously.
4. super capacitor charge/discharge control circuit according to claim 1, it is characterized in that, charge/discharge control circuit comprises NPN triode, the base stage of NPN triode detects as main power voltage the positive pole that termination connects main power source, collector electrode exports the control end of termination electronic switch as control signal, and emitter connects the ground of main power source.
5. super capacitor charge/discharge control circuit according to claim 4, it is characterized in that, charge/discharge control circuit comprises base resistance, pull down resistor, input and output capacitors, the base stage of NPN triode connects the positive pole of main power source by base resistance, connect the emitter of NPN triode by pull down resistor; Input capacitance is connected between the positive pole of main power source and the emitter of NPN triode, and output capacitance is connected between the collector electrode of NPN triode and the emitter of NPN triode.
6. super capacitor charge/discharge control circuit according to claim 1, is characterized in that, comprises DC/DC change-over circuit and load, and the electrode input end of DC/DC change-over circuit and earth terminal connect cathode output end and the cathode output end of power circuit respectively; The output terminating load of DC/DC change-over circuit.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520530732.1U CN204886263U (en) | 2015-07-21 | 2015-07-21 | Super capacitor control circuit that discharges |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520530732.1U CN204886263U (en) | 2015-07-21 | 2015-07-21 | Super capacitor control circuit that discharges |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107062030A (en) * | 2016-12-08 | 2017-08-18 | 东莞市盛祺照明科技有限公司 | A kind of battery is the flashlight of super capacitor |
| CN107271817A (en) * | 2017-06-30 | 2017-10-20 | 深圳市昇伟电子科技有限公司 | A kind of super capacitor status monitoring circuit and monitoring method |
| CN108768150A (en) * | 2018-07-18 | 2018-11-06 | 深圳市金锐显数码科技有限公司 | A kind of quick discharging circuit and device |
| CN109120052A (en) * | 2018-10-16 | 2019-01-01 | 广东电网有限责任公司 | A kind of powersupply system of data acquisition equipment |
| CN111224455A (en) * | 2020-01-14 | 2020-06-02 | 中国电子科技集团公司第三十八研究所 | Constant-pressure-difference-gradient-based unmanned aerial vehicle rapid charging method and application circuit thereof |
| CN112234688A (en) * | 2020-12-10 | 2021-01-15 | 武汉精能电子技术有限公司 | Anti-reverse-connection circuit for output of charging and discharging equipment and charging and discharging circuit |
| CN112636662A (en) * | 2020-12-09 | 2021-04-09 | 中国航空工业集团公司沈阳飞机设计研究所 | Time-delay power-off protection circuit |
| CN115509293A (en) * | 2022-09-15 | 2022-12-23 | 中国船舶重工集团公司七五0试验场 | Sonar transmitting power regulation and control circuit, system and control method |
| CN115622381A (en) * | 2022-10-18 | 2023-01-17 | 合肥中科君达视界技术股份有限公司 | Device for controlling capacitor to be electrified gradually |
-
2015
- 2015-07-21 CN CN201520530732.1U patent/CN204886263U/en active Active
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107062030A (en) * | 2016-12-08 | 2017-08-18 | 东莞市盛祺照明科技有限公司 | A kind of battery is the flashlight of super capacitor |
| CN107271817A (en) * | 2017-06-30 | 2017-10-20 | 深圳市昇伟电子科技有限公司 | A kind of super capacitor status monitoring circuit and monitoring method |
| CN108768150A (en) * | 2018-07-18 | 2018-11-06 | 深圳市金锐显数码科技有限公司 | A kind of quick discharging circuit and device |
| CN109120052A (en) * | 2018-10-16 | 2019-01-01 | 广东电网有限责任公司 | A kind of powersupply system of data acquisition equipment |
| CN109120052B (en) * | 2018-10-16 | 2024-01-23 | 广东电网有限责任公司 | Power supply system of data acquisition equipment |
| CN111224455B (en) * | 2020-01-14 | 2023-05-30 | 中国电子科技集团公司第三十八研究所 | Unmanned aerial vehicle rapid charging method based on isobaric gradient and application circuit thereof |
| CN111224455A (en) * | 2020-01-14 | 2020-06-02 | 中国电子科技集团公司第三十八研究所 | Constant-pressure-difference-gradient-based unmanned aerial vehicle rapid charging method and application circuit thereof |
| CN112636662A (en) * | 2020-12-09 | 2021-04-09 | 中国航空工业集团公司沈阳飞机设计研究所 | Time-delay power-off protection circuit |
| CN112234688A (en) * | 2020-12-10 | 2021-01-15 | 武汉精能电子技术有限公司 | Anti-reverse-connection circuit for output of charging and discharging equipment and charging and discharging circuit |
| CN115509293A (en) * | 2022-09-15 | 2022-12-23 | 中国船舶重工集团公司七五0试验场 | Sonar transmitting power regulation and control circuit, system and control method |
| CN115509293B (en) * | 2022-09-15 | 2024-01-23 | 中国船舶重工集团公司七五0试验场 | Sonar emission power regulation circuit, system and control method |
| CN115622381A (en) * | 2022-10-18 | 2023-01-17 | 合肥中科君达视界技术股份有限公司 | Device for controlling capacitor to be electrified gradually |
| CN115622381B (en) * | 2022-10-18 | 2023-12-08 | 合肥中科君达视界技术股份有限公司 | Device for controlling gradual electrification of capacitor |
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