CN203104045U - Main circuit of solar charging controller - Google Patents
Main circuit of solar charging controller Download PDFInfo
- Publication number
- CN203104045U CN203104045U CN 201320086943 CN201320086943U CN203104045U CN 203104045 U CN203104045 U CN 203104045U CN 201320086943 CN201320086943 CN 201320086943 CN 201320086943 U CN201320086943 U CN 201320086943U CN 203104045 U CN203104045 U CN 203104045U
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- switching tube
- utmost point
- resistance
- unit
- storage battery
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Abstract
The utility model relates to a main circuit of a solar charging controller. The main circuit comprises a single-chip microcomputer, a dual-charging protection unit, a reverse charging prevention unit and a reverse connection prevention unit, wherein the dual-charging protection unit consists of a first charging protection circuit and a second charging protection circuit, an input terminal of the dual-charging protection unit is connected with an anode of a solar battery, an output terminal of the dual-charging protection unit is connected with a cathode of the solar battery, a third terminal of the dual-charging protection unit is connected with a cathode of a storage battery through the reverse charging prevention unit and a charging current detection circuit, the single-chip microcomputer controls the connection and disconnection of a switch tube MOS2 in the first charging protection circuit and a switch tube MOS3 in the second charging protection circuit, and the reverse connection prevention unit of the storage battery consists of fuses. The main circuit can greatly reduce the possibility of damage to the controller due to charging protection, more importantly protects the storage battery, and prolongs the service life of the storage battery.
Description
Technical field
The utility model relates to the controller for solar technical field, particularly a kind of solar charging controller main circuit.
Background technology
Existing controller for solar technology, solar cell to the battery charge protection process in, mainly be to use switching tube, by the break-make of the control circuit control switch pipe in the controller.Solar cell is to battery charge protection, and mainly be to adopt two kinds of protected modes on the market: a kind of is open-circuit-protection, and another kind is a short-circuit protection.
This mode of open-circuit-protection is that the two ends with switching tube are connected on the charge circuit of solar cell to charge in batteries; when storage battery underfill electricity; by the control circuit control switch pipe conducting in the controller; when storage battery is full of electricity; control circuit turn-offs the control switch pipe; switching tube is in the waste that off state will cause the energy always in the charge protection process; what many producers adopted on the market is PWM charging strategy; be to turn-off by the high-frequency conducting of single chip machine controlling circuit control switch pipe; this has increased the possibility that switching tube damages; after switching tube damages; switching tube is in conducting state always; and this moment, the storage battery electricity was full of, and controller for solar just can not be controlled the unnecessary energy of solar cell release, thereby had strengthened the possibility of battery damage.
Short-circuit protection is that the two ends with switching tube are connected in parallel on the charge circuit of solar energy to charge in batteries; when storage battery underfill electricity; switching tube in the controller is in off state always; when storage battery is full of electricity; control circuit is with the conducting of control switch pipe, and at this moment, the switching tube after solar cell and the conducting directly constitutes the loop; even the mode of this short-circuit protection is used the PWM charging modes, also can cause the solar cell heating and the useful life of minimizing solar cell.
Summary of the invention
At above-mentioned problems of the prior art, the purpose of this utility model is to provide a kind of solar charging controller main circuit, and it can better protect storage battery and solar cell.
The technical scheme that the utility model is taked for achieving the above object is as follows: a kind of solar charging controller main circuit comprises single chip machine controlling circuit, dual charge protection unit and counnter attack charhing unit; Described dual charge protection unit is made of first charge protector and second charge protector, the input of described dual charge protection unit is connected with solar cell is anodal, output is connected the solar cell negative pole, and the 3rd end of described dual charge protection unit is connected with battery terminal negative with the charging current detecting unit through described counnter attack charhing unit; Described single chip machine controlling circuit connection is also controlled first charge protector, second charge protector and counnter attack charhing unit.
The anti-reverse unit of storage battery of between solar cell and storage battery, connecting.The anti-reverse unit of described storage battery is made up of fuse.
The counnter attack charhing unit of between dual charge protection unit and current detecting unit, connecting; described counnter attack charhing unit comprises switching tube Q1, resistance R 1 and resistance R 2; the D utmost point of switching tube Q1 is connected with the solar cell negative pole through dual charge protection unit; the G utmost point of switching tube Q1 is connected with the pin DO of single chip machine controlling circuit by resistance R 1; the break-make of single chip machine controlling circuit control switch pipe Q1; the G utmost point of switching tube Q1 is connected to the S utmost point of switching tube Q1 by resistance R 2, and the S utmost point of switching tube Q1 is connected with battery terminal negative through the charging current testing circuit.
Described first charge protector comprises switching tube Q2, resistance R 3 and resistance R 4, the D utmost point of switching tube Q2 is connected with the D utmost point of switching tube Q1, the G utmost point of switching tube Q2 is connected with the pin DW of single chip machine controlling circuit by resistance R 3, the break-make of single chip machine controlling circuit control switch pipe Q2, the G utmost point of switching tube Q2 is serially connected in the solar cell negative pole extremely jointly by the S of resistance R 4 and switching tube Q2; Described second charge protector comprises switching tube Q3, resistance R 5 and resistance R 6; the positive pole of the D utmost point solar cell of switching tube Q3 connects; the G utmost point of switching tube Q3 is connected with single chip machine controlling circuit pin DS by resistance R 5; the break-make of single chip machine controlling circuit control switch pipe Q3, the G utmost point of switching tube Q3 is connected to the negative pole of solar cell by resistance R 6 with the S utmost point of switching tube Q3.
By such scheme as can be known; when solar cell charges to storage battery; when charging voltage does not reach the charge protection electrical voltage point; solar cell charges to storage battery; when charging voltage reaches the charge protection electrical voltage point; control system will be controlled first charge protector by the PWM strategy and discharge unnecessary energy in the charging process, and this moment, switching tube Q2 was in high-frequency on off operating mode, and this status pole might cause the damage of switching tube Q2 and be in conducting state always.After switching tube Q2 damages; to start i.e. second charge protector of the second heavy charge protection protective device; reduced so greatly because charge protection former thereby the possibility that causes controller to damage; the more important thing is and protected storage battery and solar cell, and prolonged their useful life.
Description of drawings
Fig. 1 is a structural representation block diagram of the present utility model;
Fig. 2 is enforcement circuit theory diagrams of the present utility model;
Fig. 3 is a counnter attack charhing unit schematic diagram;
Fig. 4 is the first charge protector schematic diagram;
Fig. 5 is the second charge protector schematic diagram;
Among the figure: 1, solar cell, 2, dual charge protection unit, 3, the counnter attack charhing unit, 4, the anti-reverse unit of storage battery, 5, storage battery, 6, single chip machine controlling circuit, 7, the charging current testing circuit.
Embodiment
Below in conjunction with accompanying drawing to the utility model further instruction.
As shown in Figure 1, the utility model comprises single chip machine controlling circuit 6, dual charge protection unit 2, counnter attack charhing unit 3, the anti-reverse unit 4 of storage battery and charging current testing circuit 7.Dual charge protection unit 2 is made of first charge protector and second charge protector, shown in Fig. 4,5.The input of dual charge protection unit 2 is connected with the positive pole of solar cell 1, and output is connected the negative pole of solar cell 1.Dual charge protection unit the 3rd end and counnter attack charhing unit meet at a M; the other end of counnter attack charhing unit and charging current testing circuit meet at a N; be connected with the negative pole of storage battery 5 and ground connection through the overcharge current testing circuit, single chip machine controlling circuit 6 connections are also controlled first charge protector, second charge protector and counnter attack charhing unit 3.Be connected in series counnter attack charhing unit 3 between dual charge protection unit and the charging current testing circuit 7, to prevent that when solar cell 1 voltage was lower than storage battery 5 voltages, storage battery 5 was to solar cell 1 reverse charge.The other end of charging current testing circuit 7 is connected with storage battery 5 negative poles.Be connected in series the anti-reverse unit 4 of storage battery between the positive pole of the positive pole of solar cell 1 and storage battery 5, the anti-reverse unit 4 of storage battery adopts fuses.
As shown in Figure 3; counnter attack charhing unit 3 comprises switching tube Q1, resistance R 1 and resistance R 2; the D utmost point of switching tube Q1 and dual charge protection unit meet at a M; the G utmost point of switching tube Q1 is connected with the pin DO of single chip machine controlling circuit by resistance R 1; the break-make of single chip machine controlling circuit 6 control switch pipe Q1; the G utmost point of switching tube Q1 is connected to the S utmost point of switching tube Q1 by resistance R 2, and the S utmost point and the charging current testing circuit of switching tube Q1 meet at a N.
Shown in Fig. 4,5, first charge protector comprises switching tube Q2, resistance R 3 and resistance R 4, the D utmost point of switching tube Q2 and the D utmost point of switching tube Q1 are connected in a M, the G utmost point of switching tube Q2 is connected with the pin DW of single chip machine controlling circuit by resistance R 3, the break-make of single chip machine controlling circuit control switch pipe Q2, the G utmost point of switching tube Q2 are serially connected in the negative pole of solar cell 1 extremely jointly by resistance R 4 and the S of switching tube Q2; Described second charge protector comprises switching tube Q3, resistance R 5 and resistance R 6; the positive pole of the D utmost point solar cell 1 of switching tube Q3 connects; the G utmost point of switching tube Q3 is connected with single chip machine controlling circuit pin DS by resistance R 5; the break-make of single chip machine controlling circuit 6 control switch pipe Q3, the G utmost point of switching tube Q3 is connected to the negative pole of solar cell 1 by resistance R 6 with the S utmost point of switching tube Q3.
When the voltage of storage battery 5 is lower than the charge protection electrical voltage point; switching tube Q2 is in conducting state in first charge protector; switching tube Q3 is in off-state in second charge protector; this moment, the electric current of solar cell 1 charged a battery by first charge protector; when the voltage of storage battery 5 reaches the charge protection electrical voltage point; switching tube Q2 is in high-frequency break-make exchange state in first charge protector; just carry out the charge protection of PWM mode; at this moment, switching tube Q3 is in off-state in second charge protector.When damaging for some reason, switching tube Q2 is in conducting state always; and the voltage of storage battery 5 is when having reached the charge protection electrical voltage point; first charge protector can not be realized charge protection; single-chip microcomputer will be controlled second charge protector; when in second charge protector during switching tube Q3 conducting, circuit will be realized solar cell 1 short-circuit protection.The high-frequency break-make of Q3 is exchanged in Single-chip Controlling second charge protector, can realize the charge protection of PWM mode again.
Above-mentioned only is enforcement routine of the present utility model, and to one skilled in the art, the utility model has multiple change and variation.All within invention thought of the present utility model and principle, make any modification, be equal to replacement, improvement etc., all should be included within the protection range of the present utility model.
Claims (5)
1. a solar charging controller main circuit is characterized in that: comprise single chip machine controlling circuit (6), dual charge protection unit (2) and counnter attack charhing unit (3); Described dual charge protection unit (2) is made of first charge protector and second charge protector, the input of described dual charge protection unit (2) is connected with solar cell (1) is anodal, output is connected solar cell (1) negative pole, and the 3rd end of described dual charge protection unit (2) is connected with storage battery (5) negative pole with charging current detecting unit (7) through described counnter attack charhing unit (3); Described single chip machine controlling circuit (6) connects and controls first charge protector, second charge protector and counnter attack charhing unit (3).
2. solar charging controller main circuit according to claim 1 is characterized in that: described solar cell (1) anodal with storage battery (5) positive pole between be connected in series the anti-reverse unit of storage battery (4).
3. according to the described solar charging controller main circuit of claim 1; it is characterized in that: described counnter attack charhing unit (3) comprises switching tube Q1; resistance R 1 and resistance R 2; the D utmost point of switching tube Q1 is connected with solar cell (1) negative pole through dual charge protection unit (2); the G utmost point of switching tube Q1 is connected with the pin DO of single chip machine controlling circuit (6) by resistance R 1; the break-make of single chip machine controlling circuit (6) control switch pipe Q1; the G utmost point of switching tube Q1 is connected to the S utmost point of switching tube Q1 by resistance R 2, and the S utmost point of switching tube Q1 is connected with storage battery (5) negative pole through charging current testing circuit (7).
4. according to the described solar charging controller main circuit of claim 2, it is characterized in that: the anti-reverse unit of described storage battery (4) is made up of fuse.
5. solar charging controller main circuit according to claim 1, it is characterized in that: described first charge protector comprises switching tube Q2, resistance R 3 and resistance R 4, the D utmost point of switching tube Q2 is connected with the D utmost point of switching tube Q1, the G utmost point of switching tube Q2 is connected with the pin DW of single chip machine controlling circuit (6) by resistance R 3, the break-make of single chip machine controlling circuit (6) control switch pipe Q2, the G utmost point of switching tube Q2 are serially connected in the negative pole of solar cell (1) extremely jointly by resistance R 4 and the S of switching tube Q2; Described second charge protector comprises switching tube Q3, resistance R 5 and resistance R 6; the D utmost point of switching tube Q3 is connected with the positive pole of solar cell (1); the G utmost point of switching tube Q3 is connected with single chip machine controlling circuit (6) pin DS by resistance R 5; the break-make of single chip machine controlling circuit (6) control switch pipe Q3, the G utmost point of switching tube Q3 is connected to the negative pole of solar cell (1) by resistance R 6 with the S utmost point of switching tube Q3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320086943 CN203104045U (en) | 2013-02-26 | 2013-02-26 | Main circuit of solar charging controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320086943 CN203104045U (en) | 2013-02-26 | 2013-02-26 | Main circuit of solar charging controller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203104045U true CN203104045U (en) | 2013-07-31 |
Family
ID=48855422
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320086943 Expired - Lifetime CN203104045U (en) | 2013-02-26 | 2013-02-26 | Main circuit of solar charging controller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203104045U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103117582A (en) * | 2013-02-26 | 2013-05-22 | 合肥为民电源有限公司 | Solar charge controller master circuit |
| CN104548354A (en) * | 2015-01-14 | 2015-04-29 | 深圳市科曼医疗设备有限公司 | Defibrillation charging overcurrent protection device of defibrillator monitor and defibrillator monitor |
-
2013
- 2013-02-26 CN CN 201320086943 patent/CN203104045U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103117582A (en) * | 2013-02-26 | 2013-05-22 | 合肥为民电源有限公司 | Solar charge controller master circuit |
| CN104548354A (en) * | 2015-01-14 | 2015-04-29 | 深圳市科曼医疗设备有限公司 | Defibrillation charging overcurrent protection device of defibrillator monitor and defibrillator monitor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130731 |