CN204103466U - A kind of metal-oxide-semiconductor type solar recharging protective circuit - Google Patents

A kind of metal-oxide-semiconductor type solar recharging protective circuit Download PDF

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Publication number
CN204103466U
CN204103466U CN201420640951.0U CN201420640951U CN204103466U CN 204103466 U CN204103466 U CN 204103466U CN 201420640951 U CN201420640951 U CN 201420640951U CN 204103466 U CN204103466 U CN 204103466U
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China
Prior art keywords
oxide
metal
semiconductor
binding post
solar cell
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Expired - Fee Related
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CN201420640951.0U
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Chinese (zh)
Inventor
王立晖
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Individual
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Individual
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Priority to CN201420640951.0U priority Critical patent/CN204103466U/en
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Publication of CN204103466U publication Critical patent/CN204103466U/en
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Anticipated expiration legal-status Critical

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Abstract

A kind of metal-oxide-semiconductor type solar recharging protective circuit, is formed primarily of metal-oxide-semiconductor and voltage comparator, the binding post connecing solar cell, the binding post that connects storage battery.When solar cell charges a battery; if two lines that solar cell exports have connect instead, or short circuit, voltage comparator meeting output low level is to the grid of metal-oxide-semiconductor; make metal-oxide-semiconductor be in off state, protection solar cell and storage battery can not suffer damage because of line reversal or short circuit.The utility model beneficial effect is, circuit have employed the minimum metal-oxide-semiconductor of electric conduction pressure drop, greatly reduces the power loss of protective circuit when large current charge.

Description

A kind of metal-oxide-semiconductor type solar recharging protective circuit
Technical field
The utility model relates to a kind of solar recharging protective circuit.
Background technology
At present, known solar charging electric protection is taken on by diode usually.When solar cell charges a battery, diode can play anti-reverse and protective effect that is against short-circuit.Its weak point is that diode turn-on voltage falls larger, very large by power loss during diode at big current.
Summary of the invention
Fall larger problem to solve diode turn-on voltage, the utility model provides a kind of protective circuit, and the metal-oxide-semiconductor minimum with electric conduction pressure drop replaces diode, greatly reduces the power loss of protective circuit.
The utility model solves the technical scheme that its technical problem adopts: protective circuit primarily of metal-oxide-semiconductor, voltage comparator, connect solar cell binding post, connect storage battery binding post form.The drain electrode of metal-oxide-semiconductor and the inverting input of voltage comparator and the binding post connecing solar cell are connected, and the source electrode of metal-oxide-semiconductor and the in-phase input end of voltage comparator and the binding post connecing storage battery are connected; The grid of metal-oxide-semiconductor is connected with the output of voltage comparator.When solar cell charges a battery, the current potential of comparator in-phase input end is higher than the current potential of inverting input, and therefore comparator exports the grid of high level to metal-oxide-semiconductor, makes metal-oxide-semiconductor be in conducting state.If two lines that solar cell exports have connect instead; or short circuit; the current potential of comparator in-phase input end can lower than the current potential of inverting input; comparator at this moment output low level to the grid of metal-oxide-semiconductor; make metal-oxide-semiconductor be in off state, protection solar cell and storage battery can not suffer damage because of line reversal or short circuit.
The beneficial effects of the utility model: replace the larger diode of electric conduction pressure drop with the metal-oxide-semiconductor that electric conduction pressure drop is minimum, anti-reverse and protective effect that is against short-circuit can be played equally, and greatly reduce the power loss of protective circuit.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is further illustrated.
Fig. 1 is the fundamental diagram that solar cell is charged a battery by the utility model circuit.
Fig. 2 is another kind of circuit theory diagrams of the present utility model.
Fig. 3 is the fundamental diagram (only for reference) that solar cell is charged a battery by diode.
In figure, 1.N channel MOS tube, 2.P channel MOS tube, 3. voltage comparator, 4. operational amplifier, 5. bypass condenser, 6. diode, 7. solar cell, 8. storage battery, 9. connects the binding post of solar cell positive pole, 10. connects the binding post of solar cell negative pole, 11. binding posts connecing battery positive voltage, 12. binding posts connecing battery terminal negative.
Embodiment
In FIG, the drain electrode of N-channel MOS pipe and the inverting input of voltage comparator and the binding post connecing solar cell negative pole are connected, and the source electrode of N-channel MOS pipe and the in-phase input end of voltage comparator and the binding post connecing battery terminal negative are connected; The grid of N-channel MOS pipe is connected with the output of voltage comparator.Voltage comparator in Fig. 1, is combined by operational amplifier (4) and shunt capacitance (5) and forms.Integrated circuit and discrete component combine like this, can form the voltage comparator that antijamming capability strengthens.
In fig. 2, the drain electrode of P channel MOS tube and the inverting input of voltage comparator and the binding post connecing solar cell positive pole are connected, and the source electrode of P channel MOS tube and the in-phase input end of voltage comparator and the binding post connecing battery positive voltage are connected; The grid of P channel MOS tube is connected with the output of voltage comparator.Voltage comparator in Fig. 2 can be relevant integrated circuit, also can be the voltage comparator that discrete component is formed, and can also be the voltage comparator that integrated circuit and discrete component combination are formed.

Claims (5)

1. the solar recharging protective circuit be made up of metal-oxide-semiconductor, voltage comparator, the binding post connecing solar cell, the binding post that connects storage battery; it is characterized in that: the drain electrode of metal-oxide-semiconductor and the inverting input of voltage comparator and the binding post connecing solar cell are connected; the source electrode of metal-oxide-semiconductor and the in-phase input end of voltage comparator and the binding post connecing storage battery are connected, and the grid of metal-oxide-semiconductor is connected with the output of voltage comparator.
2. charge protector according to claim 1, is characterized in that: the metal-oxide-semiconductor in circuit, can be N-channel MOS pipe, also can be P channel MOS tube.
3. charge protector according to claim 1; it is characterized in that: the voltage comparator in circuit; can be relevant integrated circuit, also can be the voltage comparator that discrete component is formed, and can also be the voltage comparator that integrated circuit and discrete component combination are formed.
4. charge protector according to claim 1, is characterized in that: the binding post connecing solar cell in circuit, can be the binding post connecing solar cell positive pole, also can be the binding post connecing solar cell negative pole.
5. charge protector according to claim 1, is characterized in that: the binding post connecing storage battery in circuit, can be the binding post connecing battery positive voltage, also can be the binding post connecing battery terminal negative.
CN201420640951.0U 2014-10-31 2014-10-31 A kind of metal-oxide-semiconductor type solar recharging protective circuit Expired - Fee Related CN204103466U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201420640951.0U CN204103466U (en) 2014-10-31 2014-10-31 A kind of metal-oxide-semiconductor type solar recharging protective circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201420640951.0U CN204103466U (en) 2014-10-31 2014-10-31 A kind of metal-oxide-semiconductor type solar recharging protective circuit

Publications (1)

Publication Number Publication Date
CN204103466U true CN204103466U (en) 2015-01-14

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CN201420640951.0U Expired - Fee Related CN204103466U (en) 2014-10-31 2014-10-31 A kind of metal-oxide-semiconductor type solar recharging protective circuit

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CN (1) CN204103466U (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107181304A (en) * 2017-06-29 2017-09-19 北京新能源汽车股份有限公司 A kind of charge protector and automobile
CN110021986A (en) * 2018-01-05 2019-07-16 郑州宇通客车股份有限公司 A kind of wireless charging system and wireless charging device
CN112787319A (en) * 2020-12-28 2021-05-11 潍柴动力股份有限公司 Anti-reverse connection circuit and control method
CN113890333A (en) * 2021-09-29 2022-01-04 赛卓电子科技(上海)有限公司 High-voltage stabilizing circuit with anti-reflection protection

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107181304A (en) * 2017-06-29 2017-09-19 北京新能源汽车股份有限公司 A kind of charge protector and automobile
CN110021986A (en) * 2018-01-05 2019-07-16 郑州宇通客车股份有限公司 A kind of wireless charging system and wireless charging device
CN110021986B (en) * 2018-01-05 2021-03-02 郑州宇通客车股份有限公司 Wireless charging system and wireless charging device
CN112787319A (en) * 2020-12-28 2021-05-11 潍柴动力股份有限公司 Anti-reverse connection circuit and control method
CN112787319B (en) * 2020-12-28 2022-07-15 潍柴动力股份有限公司 Reverse connection prevention circuit and control method
CN113890333A (en) * 2021-09-29 2022-01-04 赛卓电子科技(上海)有限公司 High-voltage stabilizing circuit with anti-reflection protection
CN113890333B (en) * 2021-09-29 2022-07-08 赛卓电子科技(上海)股份有限公司 High-voltage stabilizing circuit with anti-protection function

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C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20150114

Termination date: 20171031