CN202856618U - Internal power supply reserved circuit of photovoltaic MPPT controller - Google Patents
Internal power supply reserved circuit of photovoltaic MPPT controller Download PDFInfo
- Publication number
- CN202856618U CN202856618U CN2012204806136U CN201220480613U CN202856618U CN 202856618 U CN202856618 U CN 202856618U CN 2012204806136 U CN2012204806136 U CN 2012204806136U CN 201220480613 U CN201220480613 U CN 201220480613U CN 202856618 U CN202856618 U CN 202856618U
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- power supply
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/56—Power conversion systems, e.g. maximum power point trackers
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Abstract
The utility model discloses an internal power supply reserved circuit of a photovoltaic MPPT controller. The internal power supply reserved circuit is characterized in that: two direct current power supplies and two groups of LM2391 circuits are employed by the internal power supply reserved circuit. Compared with the prior art, the internal power supply reserved circuit has the advantages that: firstly, since an LM2391 chip is employed by the internal power supply reserved circuit of the photovoltaic MPPT controller, a peripheral circuit is greatly simplified, and the circuit is simple and is easy to realize; secondly, a standby operation power supply meets a minimum loss characteristic, in a no working state, a standby loss is minimized, and a system loss is ensured at the same time.
Description
Technical field
The utility model relates to a kind of power circuit, specifically refers to a kind of internal electric source reserved circuit of photovoltaic MPPT controller.
Background technology
Photovoltaic MPPT controller is the upgraded product of traditional solar charging/discharging controller, the generating voltage that this controller can the detecting real-time solar panels, and follow the trail of the ceiling voltage current value, system is charged to storage battery with the highest efficient.In order to guarantee the normal operation of MPPT controller, inside at the MPPT controller generally all is provided with the power supply reserved circuit, but generally all there is the deficiency of following two aspects in existing these internal electric source reserved circuits: at first, peripheral circuit is comparatively complicated, realizes comparatively difficult; Secondly, without under the operating state, idling consumption is larger, thereby system loss can't be guaranteed.
The utility model content
Technical problem to be solved in the utility model is for above-mentioned prior art present situation, provides that a kind of peripheral circuit is comparatively simple, idling consumption is less and internal electric source reserved circuit that system loss can guaranteed photovoltaic MPPT controller.
The utility model solves the problems of the technologies described above the technical scheme that adopts: the internal electric source reserved circuit of this photovoltaic MPPT controller is characterized in that including a LM2391 chip and the 2nd LM2391 chip;
The IN pin of a described LM2391 chip links to each other with the positive pole of the first electric capacity, the minus earth of this first electric capacity and the second electric capacity and this first electric capacity are in parallel, the external first via DC power supply of the OUT pin of a described LM2391 chip, this OUT pin links to each other with the first end of resistance simultaneously, the second end of this resistance links to each other with the positive pole of the 3rd electric capacity and the negative pole of voltage stabilizing didoe simultaneously, the negative pole of described the 3rd electric capacity links to each other with the positive pole of described voltage stabilizing didoe and ground connection, and a described LM2391 chip all links to each other with the positive pole of described the 3rd electric capacity and the negative pole of voltage stabilizing didoe near two GND pins of its IN pin and OUT pin;
The IN pin of described the 2nd LM2391 chip links to each other with the OUT pin of a described LM2391 chip and the positive pole of the 4th electric capacity simultaneously, the negative pole of the 4th electric capacity links to each other with the negative pole of described the 3rd electric capacity and ground connection, external the second tunnel DC power supply of the OUT pin of described the 2nd LM2391 chip, this OUT pin links to each other with the positive pole of the 5th electric capacity simultaneously, the minus earth of the 5th electric capacity and the 6th electric capacity and the 5th electric capacity are in parallel, and described the 2nd LM2391 chip all links to each other with the negative pole of described the 4th electric capacity and ground connection near two GND pins of its IN pin and OUT pin.
Preferably, the voltage of described first via DC power supply is 12V, and the voltage of described the second tunnel DC power supply is 5V.
Further preferred, the burning voltage of described voltage stabilizing didoe is 5.8V.
Compared with prior art, the utility model has the advantage of: at first, because the internal electric source reserved circuit of this photovoltaic MPPT controller has adopted the LM2391 chip, thereby so that its peripheral circuit is simplified the simple and easily realization of circuit greatly; Secondly, the standby operation power supply satisfies the minimal losses feature, makes without under the operating state, and it is minimum that idling consumption reaches, and guaranteed simultaneously system loss.
Description of drawings
Fig. 1 is the circuit structure block diagram of the utility model embodiment.
Embodiment
Embodiment is described in further detail the utility model below in conjunction with accompanying drawing.
As shown in Figure 1, the internal electric source reserved circuit of the photovoltaic MPPT controller in the present embodiment has adopted two-way DC power supply and two groups of LM2391 chip circuits, and these two groups of LM2391 chip circuits comprise a LM2391 chip U1, the 2nd LM2391 chip U2 and corresponding peripheral circuit.
Particularly, the IN pin of a described LM2391 chip U1 links to each other with the positive pole of the first capacitor C 1, the minus earth of this first capacitor C 1 and the second capacitor C 2 are in parallel with this first capacitor C 1, the external first via DC power supply of the OUT pin of a described LM2391 chip U1, this OUT pin links to each other with the first end of resistance R simultaneously, the second end of this resistance R links to each other with the positive pole of the 3rd capacitor C 3 and the negative pole of voltage stabilizing didoe D simultaneously, the negative pole of described the 3rd capacitor C 3 links to each other with the positive pole of described voltage stabilizing didoe D and ground connection, and a described LM2391 chip U1 all links to each other with the positive pole of described the 3rd capacitor C 3 and the negative pole of voltage stabilizing didoe D near two GND pins of its IN pin and OUT pin.
The IN pin of described the 2nd LM2391 chip U2 links to each other with the OUT pin of a described LM2391 chip U1 and the positive pole of the 4th capacitor C 4 simultaneously, the negative pole of the 4th capacitor C 4 links to each other with the negative pole of described the 3rd capacitor C 3 and ground connection, external the second tunnel DC power supply of the OUT pin of described the 2nd LM2391 chip U2, this OUT pin links to each other with the positive pole of the 5th capacitor C 5 simultaneously, the minus earth of the 5th capacitor C 5 and the 6th capacitor C 6 are in parallel with the 5th capacitor C 5, and described the 2nd LM2391 chip U2 all links to each other with the negative pole of described the 4th capacitor C 4 and ground connection near two GND pins of its IN pin and OUT pin.
As seen, behind the employing LM2391 chip, the peripheral circuit of this internal electric source reserved circuit is simplified greatly, and circuit is simple and easy to realize.And without under the operating state, it is minimum that idling consumption reaches, thereby guaranteed system loss.
In addition, in the present embodiment, the voltage of first via DC power supply is 12V, the voltage of the second tunnel DC power supply is 5V, the burning voltage of voltage stabilizing didoe D is 5.8V, and the size of resistance R is 30K, and the index of the first capacitor C 1 is 100uF50V, the size of the second capacitor C 2 and the 6th capacitor C 6 is 0.01uF, and the index of the 3rd capacitor C 3, the 4th capacitor C 4 and the 5th capacitor C 5 is 100uF 16V.
Claims (3)
1. the internal electric source reserved circuit of a photovoltaic MPPT controller is characterized in that including a LM2391 chip (U1) and the 2nd LM2391 chip (U2);
The IN pin of a described LM2391 chip (U1) links to each other with the positive pole of the first electric capacity (C1), the minus earth of this first electric capacity (C1) and the second electric capacity (C2) are in parallel with this first electric capacity (C1), the external first via DC power supply of the OUT pin of a described LM2391 chip (U1), this OUT pin links to each other with the first end of resistance (R) simultaneously, second end of this resistance (R) links to each other with the positive pole of the 3rd electric capacity (C3) and the negative pole of voltage stabilizing didoe (D) simultaneously, the negative pole of described the 3rd electric capacity (C3) links to each other with the positive pole of described voltage stabilizing didoe (D) and ground connection, and a described LM2391 chip (U1) all links to each other with the positive pole of described the 3rd electric capacity (C3) and the negative pole of voltage stabilizing didoe (D) near two GND pins of its IN pin and OUT pin;
The IN pin of described the 2nd LM2391 chip (U2) links to each other with the OUT pin of a described LM2391 chip (U1) and the positive pole of the 4th electric capacity (C4) simultaneously, the negative pole of the 4th electric capacity (C4) links to each other with the negative pole of described the 3rd electric capacity (C3) and ground connection, external the second tunnel DC power supply of the OUT pin of described the 2nd LM2391 chip (U2), this OUT pin links to each other with the positive pole of the 5th electric capacity (C5) simultaneously, the minus earth of the 5th electric capacity (C5) and the 6th electric capacity (C6) are in parallel with the 5th electric capacity (C5), and described the 2nd LM2391 chip (U2) all links to each other with the negative pole of described the 4th electric capacity (C4) and ground connection near two GND pins of its IN pin and OUT pin.
2. the internal electric source reserved circuit of photovoltaic MPPT controller according to claim 1, it is characterized in that: the voltage of described first via DC power supply is 12V, the voltage of described the second tunnel DC power supply is 5V.
3. the internal electric source reserved circuit of photovoltaic MPPT controller according to claim 1 and 2, it is characterized in that: the burning voltage of described voltage stabilizing didoe (D) is 5.8V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012204806136U CN202856618U (en) | 2012-09-19 | 2012-09-19 | Internal power supply reserved circuit of photovoltaic MPPT controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012204806136U CN202856618U (en) | 2012-09-19 | 2012-09-19 | Internal power supply reserved circuit of photovoltaic MPPT controller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202856618U true CN202856618U (en) | 2013-04-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012204806136U Expired - Fee Related CN202856618U (en) | 2012-09-19 | 2012-09-19 | Internal power supply reserved circuit of photovoltaic MPPT controller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202856618U (en) |
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2012
- 2012-09-19 CN CN2012204806136U patent/CN202856618U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130403 Termination date: 20140919 |
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| EXPY | Termination of patent right or utility model |