CN202997559U - Input anti reversal connection protection circuit of solar energy controller - Google Patents
Input anti reversal connection protection circuit of solar energy controller Download PDFInfo
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- CN202997559U CN202997559U CN 201220603933 CN201220603933U CN202997559U CN 202997559 U CN202997559 U CN 202997559U CN 201220603933 CN201220603933 CN 201220603933 CN 201220603933 U CN201220603933 U CN 201220603933U CN 202997559 U CN202997559 U CN 202997559U
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Abstract
The present utility model relates to an input anti reversal connection protection circuit of a solar energy controller. The circuit comprises an anode connecting end PV plus and a cathode connecting end PV minus of a solar energy cell, an anode connecting end BAT plus and a cathode connecting end BAT minus of a storage battery, a solar energy side drive circuit and a control circuit, the protection circuit is characterized in that an input anti reversal connection protection circuit is arranged between the connecting ends of the solar energy cell and the connecting ends of the storage battery, the input anti reversal connection protection circuit comprises a turn-on loop (1), a turn-off loop (2) and a detection loop (3), when the solar energy cell is detected as normal connection, a charging loop of the solar energy cell, which is used for supplying charging voltage for the anode connecting end BAT plus and the cathode connecting end BAT minus of the storage battery, is turned on; when the solar energy cell is detected as reversal connection, the charging loop of the solar energy cell, which is used for supplying charging voltage for the anode connecting end BAT plus and the cathode connecting end BAT minus of the storage battery, is turned off, and reversal charging of the storage battery can be avoided. The protection circuit is simple in circuit and low in costs.
Description
Technical field:
The utility model relates to a kind of input reverse connection prevention protection circuit, particularly relates to a kind of input reverse connection prevention protection circuit of controller for solar.Belong to the photovoltaic power generation technology field.
Background technology:
at present, controller for solar is widely used in all kinds of photovoltaic systems, the electric energy that solar cell transforms is realized the charging and discharging of storage battery is managed with the optimal charge pattern, but in the use procedure of reality, usually because operator's improper use, the input solar cell appears just, the situation of negative pole reversal connection, like this in charging process, can cause solar cell that the situation that storage battery carries out reverse charging is occured, can damage to a certain extent storage battery like this, affect the useful life of storage battery, even can blast because of the overheated of storage battery, cause security incident.
In prior art, most controller for solar do not design reverse-connection protection circuit, therefore, and the normal situation that sun twins storage battery occurs damaging.Although someone adopts the mode that increases the complex hardware device to carry out reverse connecting protection at present, complex structure, the cost of these complex hardware are higher, have increased cost on the one hand, also are unfavorable on the other hand the miniaturization of product, are unfavorable for applying.
The utility model content:
The purpose of this utility model is to provide a kind of input reverse connection prevention protection circuit of controller for solar in order to solve the technical problem of above-mentioned proposition.Have the characteristics such as circuit is simple, protection is reliable, cost is low.
The purpose of this utility model can reach by the following technical programs:
a kind of input reverse connection prevention protection circuit of controller for solar, the anode connection terminal PV+ and the negative pole link PV-that comprise solar cell, the anode connection terminal BAT+ of storage battery and negative pole link BAT-, the solar energy side drive circuit, storage battery side drive circuit and control circuit, it is characterized in that: the input reverse connection prevention protection circuit that is made of discrete electronic component is set between the link of the link of solar cell and storage battery, this input reverse connection prevention protection circuit comprises opens the loop, turn-off circuit and detection loop, when solar cell being detected and normally connect, connect solar cell to the anode connection terminal BAT+ of storage battery and the charge circuit of negative pole link BAT supply charging voltage, connect inverse time when solar cell being detected, turn-off charge circuit that solar cell supplies with charging voltage to anode connection terminal BAT+ and the negative pole link BAT of storage battery, prevent the storage battery reverse charging.
The purpose of this utility model can also reach by the following technical programs:
A kind of execution mode of the present utility model is: described input reverse connection prevention protection circuit is formed by connecting by resistance R 1-R3, diode D1, filter capacitor C1 and power tube Q1-Q2; Wherein, resistance R 1 and diode D1 series connection, one end of this series connection group is connected the negative pole link PV-of solar cell with the anode connection terminal PV+ of solar cell, the other end by power tube Q2, the grid of power tube Q2 is connected with solar energy side drive circuit output, consists of to open loop (1); The source electrode of power tube Q1 is connected with the negative pole link BAT-of storage battery, its drain electrode is connected with the drain electrode tie point of diode D1 negative electrode and power tube Q2, its grid is connected with the storage battery side drive circuit, consists of turn-off circuit; Resistance R 1 is connected tie point and is connected the input A of control circuits by resistance R 2 with diode D1, control circuit output C1 be connected with the input C11 of solar energy side drive circuit, the output C2 of control circuit is connected with the input C22 of storage battery side drive circuit, consists of to detect the loop.
A kind of execution mode of the present utility model is: the input A of control circuit can connect the negative pole link BAT-of storage battery by filter circuit, this filter circuit is composed in parallel by filter capacitor C1 and resistance R 3.
Useful effect of the present utility model is:
The utility model connects and composes detection loop to battery state of charge by simple discrete electronic component; by detecting control loop to a detection of A voltage; the work of control turn-off circuit, namely switch-off power pipe Q1, realize preventing the effect of reverse connecting protection storage battery.Because circuit integral body all is made of discrete electronic component, therefore has simple, the with low cost and safe and reliable beneficial effect of circuit structure.
Figure of description:
Fig. 1 is the circuit theory diagrams of the utility model specific embodiment.
Embodiment:
Below in conjunction with drawings and Examples, the utility model is described in further detail:
Specific embodiment:
with reference to Fig. 1, the utility model comprises anode connection terminal PV+ and the negative pole link PV-of solar cell, the anode connection terminal BAT+ of storage battery and negative pole link BAT-, the solar energy side drive circuit, storage battery side drive circuit and control circuit, it is characterized in that: the input reverse connection prevention protection circuit that is made of discrete electronic component is set between the link of the link of solar cell and storage battery, this input reverse connection prevention protection circuit comprises opens loop 1, turn-off circuit 2 and detection loop 3, when solar cell being detected and normally connect, connect solar cell to the anode connection terminal BAT+ of storage battery and the charge circuit of negative pole link BAT supply charging voltage, connect inverse time when solar cell being detected, turn-off charge circuit that solar cell supplies with charging voltage to anode connection terminal BAT+ and the negative pole link BAT of storage battery, prevent the storage battery reverse charging.
In the present embodiment:
Described input reverse connection prevention protection circuit is formed by connecting by resistance R 1-R3, diode D1, filter capacitor C1 and power tube Q1-Q2; Wherein, resistance R 1 and diode D1 series connection, one end of this series connection group is connected the negative pole link PV-of solar cell with the anode connection terminal PV+ of solar cell, the other end by power tube Q2, the grid of power tube Q2 is connected with solar energy side drive circuit output, consists of to open loop 1; The source electrode of power tube Q1 is connected with the negative pole link BAT-of storage battery, its drain electrode is connected with the drain electrode tie point of diode D1 negative electrode and power tube Q2, its grid is connected with the storage battery side drive circuit, consists of turn-off circuit 2; Resistance R 1 is connected tie point and is connected the input A of control circuits by resistance R 2 with diode D1, control circuit output C1 be connected with the input C11 of solar energy side drive circuit, the output C2 of control circuit is connected with the input C22 of storage battery side drive circuit, consists of to detect loop 3.The input A of control circuit can connect the negative pole link BAT-of storage battery by filter circuit, this filter circuit is composed in parallel by filter capacitor C1 and resistance R 3.
Solar energy side drive circuit, storage battery side drive circuit and control circuit adopt the custom circuit in existing controller for solar, and power tube Q1-Q2 is conventional power tube.
The operation principle of the present embodiment:
As shown in Figure 1, in practical application, the anode connection terminal PV+ of sun energy battery connects the solar cell positive pole, negative pole link PV-connects the solar cell negative pole, and the anode connection terminal BAT+ of storage battery connects battery positive voltage, negative pole link BAT-connects battery terminal negative.
When solar cell normally connects, power supply PV12V energising, drive circuit 1 normal operation, power tube Q2 conducting, electric current forms the loop by resistance R 1, diode D1, power tube Q2, and the voltage V1 that control circuit A end detects resistance R 3 dividing potential drops is zero substantially, and protective circuit is not worked;
When solar cell connects inverse time, power supply PV12V no power, drive circuit 1 is not worked, power tube Q2 turn-offs, this moment, solar cell negative input (PV-) voltage was higher than electrode input end voltage, electric current flows to drain electrode through diode in the body of power tube Q2 by source electrode, can form reverse charging to storage battery.For fear of reverse charging, after reversal connection simultaneously, diode D1 cathode potential is higher than the current potential of anode; not conducting of diode D1; electric current is by battery positive voltage, and resistance R 1, R2, R3 form the loop, at this moment; the voltage V1 of resistance R 3 dividing potential drops is the 2-4V left and right; after control circuit A end detected voltage obvious variation is arranged, control end C2 was to drive circuit 2 input control signal C22, switch-off power pipe Q1; play the effect of reverse connecting protection, prevent the storage battery reverse charging.
The above; it is only the better specific embodiment of the utility model; but protection range of the present utility model is not limited to this; anyly be familiar with those skilled in the art in the scope that the utility model discloses; be equal to according to the technical solution of the utility model and replace or change, all belonged to protection range of the present utility model.
Claims (3)
1. the input reverse connection prevention protection circuit of a controller for solar, the anode connection terminal PV+ and the negative pole link PV-that comprise solar cell, the anode connection terminal BAT+ of storage battery and negative pole link BAT-, the solar energy side drive circuit, storage battery side drive circuit and control circuit, it is characterized in that: the input reverse connection prevention protection circuit that is made of discrete electronic component is set between the link of the link of solar cell and storage battery, this input reverse connection prevention protection circuit comprises opens loop (1), turn-off circuit (2) and detect loop (3), when solar cell being detected and normally connect, connect solar cell to the anode connection terminal BAT+ of storage battery and the charge circuit of negative pole link BAT supply charging voltage, connect inverse time when solar cell being detected, turn-off charge circuit that solar cell supplies with charging voltage to anode connection terminal BAT+ and the negative pole link BAT of storage battery, prevent the storage battery reverse charging.
2. the input reverse connection prevention protection circuit of a kind of controller for solar according to claim 1, it is characterized in that: described input reverse connection prevention protection circuit is formed by connecting by resistance R 1-R3, diode D1, filter capacitor C1 and power tube Q1-Q2; Wherein, resistance R 1 and diode D1 series connection, one end of this series connection group is connected the negative pole link PV-of solar cell with the anode connection terminal PV+ of solar cell, the other end by power tube Q2, the grid of power tube Q2 is connected with solar energy side drive circuit output, consists of to open loop (1); The source electrode of power tube Q1 is connected with the negative pole link BAT-of storage battery, its drain electrode is connected with the drain electrode tie point of diode D1 negative electrode and power tube Q2, its grid is connected with the storage battery side drive circuit, consists of turn-off circuit (2); Resistance R 1 is connected tie point and is connected the input A of control circuits by resistance R 2 with diode D1, control circuit output C1 be connected with the input C11 of solar energy side drive circuit, the output C2 of control circuit is connected with the input C22 of storage battery side drive circuit, consists of to detect loop (3).
3. the input reverse connection prevention protection circuit of a kind of controller for solar according to claim 2; it is characterized in that: the input A of control circuit can connect the negative pole link BAT-of storage battery by filter circuit, this filter circuit is composed in parallel by filter capacitor C1 and resistance R 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220603933 CN202997559U (en) | 2012-11-14 | 2012-11-14 | Input anti reversal connection protection circuit of solar energy controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220603933 CN202997559U (en) | 2012-11-14 | 2012-11-14 | Input anti reversal connection protection circuit of solar energy controller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202997559U true CN202997559U (en) | 2013-06-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220603933 Expired - Fee Related CN202997559U (en) | 2012-11-14 | 2012-11-14 | Input anti reversal connection protection circuit of solar energy controller |
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| Country | Link |
|---|---|
| CN (1) | CN202997559U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10097108B2 (en) | 2014-12-16 | 2018-10-09 | Abb Schweiz Ag | Energy panel arrangement power dissipation |
| US10348094B2 (en) | 2015-01-28 | 2019-07-09 | Abb Schweiz Ag | Energy panel arrangement shutdown |
| US10404060B2 (en) | 2015-02-22 | 2019-09-03 | Abb Schweiz Ag | Photovoltaic string reverse polarity detection |
-
2012
- 2012-11-14 CN CN 201220603933 patent/CN202997559U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10097108B2 (en) | 2014-12-16 | 2018-10-09 | Abb Schweiz Ag | Energy panel arrangement power dissipation |
| US10348094B2 (en) | 2015-01-28 | 2019-07-09 | Abb Schweiz Ag | Energy panel arrangement shutdown |
| US10404060B2 (en) | 2015-02-22 | 2019-09-03 | Abb Schweiz Ag | Photovoltaic string reverse polarity detection |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: GUANGDONG REAL-DESIGN INTELLIGENT TECHNOLOGY CO., Free format text: FORMER NAME: FOSHAN SHUNDE REALDESIGN ELECTRONICS INDUSTRY CO., LTD. |
|
| CP03 | Change of name, title or address |
Address after: 528300 Shunde, Guangdong, Daliang Industrial Park, Fengxiang, Xiang Xiang Road, No. 1 Patentee after: GUANGDONG REAL-DESIGN INTELLIGENT TECHNOLOGY CO., LTD. Address before: 528300 Guangdong province Foshan city Shunde District Daliang Industrial Park Fengxiang Huaye Road No. 1 Patentee before: Foshan Shunde Realdesign Electronics Industry Co., Ltd. |
|
| 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: 20130612 Termination date: 20171114 |