CN105048432A - Anti-surge circuit of solar charging device - Google Patents
Anti-surge circuit of solar charging device Download PDFInfo
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- CN105048432A CN105048432A CN201510285807.9A CN201510285807A CN105048432A CN 105048432 A CN105048432 A CN 105048432A CN 201510285807 A CN201510285807 A CN 201510285807A CN 105048432 A CN105048432 A CN 105048432A
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Abstract
The invention provides an anti-surge circuit of a solar charging device. The anti-surge circuit of the solar charging device comprises a first voltage detection circuit used for detecting voltage of the output end of a solar power supply, a second voltage detection circuit used for detecting voltage of the input end of a solar battery, an energy storage capacitor C1, an NMOS (N-channel metal oxide semiconductor) switching transistor Q1 and a filter capacitor C2, wherein a source electrode of the NMOS switching transistor Q1 is connected with the first voltage detection circuit and a positive electrode of the energy storage capacitor C1, a drain electrode of the NMOS switching transistor Q1 is connected with the second voltage detection circuit and a positive electrode Vb+ of the solar battery, two ends of the filter capacitor are connected with the positive electrode Vb+ and a negative electrode Vb- of the solar battery respectively, and an enable signal of a grid electrode of the NMOS switching transistor Q1 is QG which is provided by a control circuit of the solar power supply. Surge of a solar power generation circuit can be avoided through the anti-surge circuit of the solar charging device provided by the invention, power supply is stable and reliable, and a vehicle-mounted electronic device is avoided from being damaged.
Description
Technical field
The present invention relates to solar charging electrical domain, particularly relate to a kind of solar charging device anti-surge circuit.
Background technology
In prior art, along with the continuous aggravation of energy crisis and environmental crisis, solar energy is also more and more extensive and ripe in the use of automotive field.
But the generating efficiency of solar energy screen has peak period and low ebb phase, and this periodicity or aperiodic change can cause solar powered circuit to there is surge, use solar powered directly for battery-powered, the life-span of battery pack can be had a strong impact on.Meanwhile, when battery pack superposes to the generating of the power supply and solar energy screen self of solar inverter, surge phenomenon is more obvious, will inevitably nocuity be brought to impact by other unit.
Summary of the invention
Main purpose of the present invention is the defect for prior art, provides a kind of solar charging device anti-surge circuit.
The technological means that technical solution problem of the present invention adopts is: provide a kind of solar charging device anti-surge circuit, this solar charging device anti-surge circuit comprises the first voltage detecting circuit for detecting sun-generated electric power output end voltage, for detecting the second voltage detecting circuit of solar storage battery input terminal voltage, storage capacitor C1, nmos switch pipe Q1 and filter capacitor C2, the source electrode of described nmos switch pipe Q1 respectively with the first voltage detecting circuit, described storage capacitor C1 positive pole connects, the drain electrode of described nmos switch pipe Q1 respectively with the second voltage detecting circuit, solar storage battery positive pole Vb+ connects, the two ends of described filter capacitor C2 are connected with solar storage battery positive pole Vb+ and negative pole Vb-respectively, the enable signal of the grid of described nmos switch pipe Q1 is QG, thered is provided by the control circuit of sun-generated electric power.
Inventing in a kind of solar charging device anti-surge circuit originally provided, described first voltage detecting circuit comprises detection resistance R1 and detects resistance R2,1 end of R1 is connected with the positive pole of storage capacitor C1, the source electrode of nmos switch pipe Q1 respectively, 2 ends of R1 are connected with 1 end of R2, and 2 ends of R2 are connected with solar storage battery negative pole Vb-with the negative pole of storage capacitor C1,2 ends that detect resistance R4 respectively.
In a kind of solar charging device anti-surge circuit provided by the invention, described second voltage detecting circuit comprises detection resistance R3 and detects resistance R4,1 end detecting resistance R3 is connected with the positive pole Vb+ of solar storage battery, the drain electrode of nmos switch pipe Q1 respectively, 2 ends detecting resistance R3 are connected with 1 end detecting resistance R4, and 2 ends of detection resistance R4 are connected with solar storage battery negative pole Vb-with the negative pole of storage capacitor C1,2 ends that detect resistance R2 respectively.
In a kind of solar charging device anti-surge circuit provided by the invention, described nmos switch pipe Q1 adopts the power-type MOS switching tube of low on-resistance.
In a kind of solar charging device anti-surge circuit provided by the invention, be connected with a divider resistance R5 between the source electrode of described nmos switch pipe Q1 and drain electrode, the resistance of described divider resistance R5 is 40-200 Ω.
In a kind of solar charging device anti-surge circuit provided by the invention, also comprise rectifier diode D, the two ends of described rectifier diode D are connected with described first voltage detecting circuit and described storage capacitor C1 respectively.
Be can be avoided the surge of solar power generation circuit by solar charging device anti-surge circuit provided by the invention, power reliable and stable, avoid damaging vehicle electronics device.
Accompanying drawing explanation
Fig. 1 is the circuit theory diagrams of a kind of solar charging device anti-surge circuit provided by the invention.
The realization of the object of the invention, functional characteristics and advantage will in conjunction with the embodiments, are described further with reference to accompanying drawing.
Embodiment
Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
The invention provides a kind of solar charging device anti-surge circuit, this solar charging device anti-surge circuit comprises the first voltage detecting circuit for detecting sun-generated electric power output end voltage, for detecting the second voltage detecting circuit of solar storage battery input terminal voltage, storage capacitor C1, nmos switch pipe Q1 and filter capacitor C2, the source electrode of nmos switch pipe Q1 respectively with the first voltage detecting circuit, storage capacitor C1 positive pole connects, the drain electrode of nmos switch pipe Q1 respectively with the second voltage detecting circuit, solar storage battery positive pole Vb+ connects, the two ends of filter capacitor C2 are connected with solar storage battery positive pole Vb+ and negative pole Vb-respectively, the enable signal of the grid of nmos switch pipe Q1 is QG, thered is provided by the control circuit of sun-generated electric power.In addition, rectifier diode D is also provided with between this first voltage detecting circuit and positive pole of storage capacitor C1.
Be can be avoided the surge of solar power generation circuit by solar charging device anti-surge circuit provided by the invention, power reliable and stable, avoid damaging vehicle electronics device.
Particularly, first voltage detecting circuit comprises detection resistance R1 and detects resistance R2,1 end of R1 is connected with the positive pole of storage capacitor C1, the source electrode of nmos switch pipe Q1 respectively, 2 ends of R1 are connected with 1 end of R2, and 2 ends of R2 are connected with solar storage battery negative pole Vb-with the negative pole of storage capacitor C1,2 ends that detect resistance R4 respectively.Second voltage detecting circuit comprises detection resistance R3 and detects resistance R4,1 end detecting resistance R3 is connected with the positive pole Vb+ of solar storage battery, the drain electrode of nmos switch pipe Q1 respectively, 2 ends detecting resistance R3 are connected with 1 end detecting resistance R4, and 2 ends of detection resistance R4 are connected with solar storage battery negative pole Vb-with the negative pole of storage capacitor C1,2 ends that detect resistance R2 respectively.
Preferably, nmos switch pipe Q1 adopts the power-type MOS switching tube of low on-resistance, and it is not limited to this certainly.
Preferably, be connected with a divider resistance R5 between the source electrode of nmos switch pipe Q1 and drain electrode, the resistance of divider resistance R5 is 40-200 Ω.
Should be noted that; the technical scheme of each embodiment of the present invention can be combined with each other; but must be can be embodied as basis with those skilled in the art; when technical scheme combination occur conflicting maybe cannot realize time people should think that the combination of this technical scheme does not exist, also not within the protection range of application claims.
These are only the preferred embodiments of the present invention; not thereby the scope of the claims of the present invention is limited; every utilize specification of the present invention and accompanying drawing content to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.
Claims (6)
1. a solar charging device anti-surge circuit, it is characterized in that, this solar charging device anti-surge circuit comprises the first voltage detecting circuit for detecting sun-generated electric power output end voltage, for detecting the second voltage detecting circuit of solar storage battery input terminal voltage, storage capacitor C1, nmos switch pipe Q1 and filter capacitor C2, the source electrode of described nmos switch pipe Q1 respectively with the first voltage detecting circuit, described storage capacitor C1 positive pole connects, the drain electrode of described nmos switch pipe Q1 respectively with described second voltage detecting circuit, solar storage battery positive pole Vb+ connects, the two ends of described filter capacitor C2 are connected with solar storage battery positive pole Vb+ and negative pole Vb-respectively, the enable signal of the grid of described nmos switch pipe Q1 is QG, thered is provided by the control circuit of sun-generated electric power.
2. a kind of solar charging device anti-surge circuit according to claim 1, it is characterized in that: described first voltage detecting circuit comprises detection resistance R1 and detects resistance R2,1 end detecting resistance R1 is connected with the positive pole of storage capacitor C1, the source electrode of nmos switch pipe Q1 respectively, 2 ends detecting resistance R1 are connected with 1 end detecting resistance R2, and 2 ends of detection resistance R2 are connected with solar storage battery negative pole Vb-with the negative pole of storage capacitor C1,2 ends that detect resistance R4 respectively.
3. a kind of solar charging device anti-surge circuit according to claim 1, it is characterized in that: described second voltage detecting circuit comprises detection resistance R3 and detects resistance R4,1 end detecting resistance R3 is connected with the positive pole Vb+ of solar storage battery, the drain electrode of nmos switch pipe Q1 respectively, 2 ends detecting resistance R3 are connected with 1 end detecting resistance R4, and 2 ends of detection resistance R4 are connected with solar storage battery negative pole Vb-with the negative pole of storage capacitor C1,2 ends that detect resistance R2 respectively.
4. a kind of solar charging device anti-surge circuit according to claim 1, is characterized in that: described nmos switch pipe Q1 adopts the power-type MOS switching tube of low on-resistance.
5. a kind of solar charging device anti-surge circuit according to claim 1, is characterized in that: be connected with a divider resistance R5 between the source electrode of described nmos switch pipe Q1 and drain electrode, the resistance of described divider resistance R5 is 40-200 Ω.
6. a kind of solar charging device anti-surge circuit according to claim 1, is characterized in that: also comprise rectifier diode D, and the two ends of described rectifier diode D are connected with described first voltage detecting circuit and described storage capacitor C1 respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510285807.9A CN105048432A (en) | 2015-05-29 | 2015-05-29 | Anti-surge circuit of solar charging device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510285807.9A CN105048432A (en) | 2015-05-29 | 2015-05-29 | Anti-surge circuit of solar charging device |
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| CN105048432A true CN105048432A (en) | 2015-11-11 |
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| CN201510285807.9A Pending CN105048432A (en) | 2015-05-29 | 2015-05-29 | Anti-surge circuit of solar charging device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110571773A (en) * | 2019-09-19 | 2019-12-13 | 北京意锐新创科技有限公司 | Protective circuit |
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| CN203456934U (en) * | 2013-09-03 | 2014-02-26 | 深圳市金威源科技股份有限公司 | Solar photovoltaic system control apparatus |
| JP2014075854A (en) * | 2012-10-02 | 2014-04-24 | Panasonic Corp | Output control system and photovoltaic power generation system |
| CN203942270U (en) * | 2014-06-23 | 2014-11-12 | 广东工业大学 | A kind of low-loss output anti-surge circuit of charge power supply |
| CN204168546U (en) * | 2014-10-14 | 2015-02-18 | 云南农业大学 | A kind of solar LED street lamp control system |
| CN204681087U (en) * | 2015-05-29 | 2015-09-30 | 广东好帮手电子科技股份有限公司 | Solar charging device anti-surge circuit |
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2015
- 2015-05-29 CN CN201510285807.9A patent/CN105048432A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014075854A (en) * | 2012-10-02 | 2014-04-24 | Panasonic Corp | Output control system and photovoltaic power generation system |
| CN203456934U (en) * | 2013-09-03 | 2014-02-26 | 深圳市金威源科技股份有限公司 | Solar photovoltaic system control apparatus |
| CN203942270U (en) * | 2014-06-23 | 2014-11-12 | 广东工业大学 | A kind of low-loss output anti-surge circuit of charge power supply |
| CN204168546U (en) * | 2014-10-14 | 2015-02-18 | 云南农业大学 | A kind of solar LED street lamp control system |
| CN204681087U (en) * | 2015-05-29 | 2015-09-30 | 广东好帮手电子科技股份有限公司 | Solar charging device anti-surge circuit |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110571773A (en) * | 2019-09-19 | 2019-12-13 | 北京意锐新创科技有限公司 | Protective circuit |
| CN110571773B (en) * | 2019-09-19 | 2021-11-09 | 山东派盟网络科技有限公司 | Protective circuit |
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