CN211905552U - Photovoltaic optimizer calibration device - Google Patents
Photovoltaic optimizer calibration device Download PDFInfo
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- CN211905552U CN211905552U CN202020313317.1U CN202020313317U CN211905552U CN 211905552 U CN211905552 U CN 211905552U CN 202020313317 U CN202020313317 U CN 202020313317U CN 211905552 U CN211905552 U CN 211905552U
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Abstract
The utility model discloses a photovoltaic optimizer calibration equipment belongs to solar photovoltaic power generation technical field. The device comprises a circuit board positioning jig, a pressing plate, a control and detection module, a communication module, an external direct current photovoltaic analog power supply, an external direct current load and a voltage and current detection unit. The circuit board positioning jig and the pressing plate can accurately and reliably position the circuit board of the photovoltaic optimizer, quickly check the voltage and current power precision of the photovoltaic optimizer in batches, reduce the maximum power point tracking deviation, improve the efficiency of the photovoltaic optimizer, and judge whether the MPPT function is normal, thereby obviously shortening the checking time and improving the production efficiency; by connecting the upper computer, the control of the checking device and the analysis and comparison of the data can be realized quickly. The batch and accurate verification of the photovoltaic optimizers is realized, the labor cost is reduced, and quality assurance is provided for normal use of the photovoltaic modules.
Description
Technical Field
The utility model belongs to the technical field of solar photovoltaic power generation, concretely relates to photovoltaic optimizer calibration equipment.
Background
The photovoltaic optimizer can realize Maximum Power Point Tracking (MPPT) on each photovoltaic assembly, and each photovoltaic module in the photovoltaic system can output electric energy to the maximum extent. Because the precision of purchasing electronic components in batch production of the photovoltaic optimizer has deviation, a burning-in program is an initial state, the photovoltaic optimizer cannot obtain a precise voltage and current power value when the photovoltaic optimizer is directly used, and the maximum power point tracking power of the photovoltaic optimizer can generate deviation to reduce the efficiency; the photovoltaic optimizer cannot communicate accurate data outwards.
Disclosure of Invention
In order to solve the defect that exists among the above-mentioned prior art, the utility model aims to provide a photovoltaic optimizer calibration equipment, can convenient and fast carry out the calibration to photovoltaic optimizer, the degree of accuracy is high, efficient.
The utility model discloses a following technical scheme realizes:
the utility model discloses a photovoltaic optimizer calibration device, which comprises a circuit board positioning jig, a pressing plate, a control and detection module, a communication module, an external direct current photovoltaic simulation power supply, an external direct current load and a voltage and current detection unit;
the pressing plate is provided with a plurality of contacts and interfaces connected with the control and detection module, and the contacts and the wiring of the positive and negative electrodes of the external direct-current photovoltaic analog power supply and the wiring of the contacts and the positive and negative electrodes of the external direct-current load are respectively connected with the voltage and current detection unit;
the communication module is arranged between the contact and the wiring of the positive electrode and the negative electrode of the external direct current load; the communication module, the external direct current photovoltaic analog power supply, the external direct current load and the voltage and current detection unit are respectively connected with the control and detection module;
when the circuit board positioning jig is used, the photovoltaic optimizer circuit board is fixed on the pressing plate through the circuit board positioning jig, the positive and negative poles of the input end and the positive and negative poles of the output end of the photovoltaic optimizer circuit board are respectively connected with the contacts on the pressing plate, and the initialization port of the photovoltaic optimizer circuit board is connected with the interface on the pressing plate; the control and detection module is connected with an upper computer.
Preferably, the contacts on the pressure plate comprise a first circular contact, a second circular contact, a third circular contact and a fourth circular contact, and the interface is a 10pin interface; the voltage and current detection unit comprises a first voltmeter, a first ammeter, a second voltmeter and a second ammeter;
the first circular contact is connected with the negative electrode of the external direct current photovoltaic analog power supply, the second circular contact is connected with the positive electrode of the external direct current photovoltaic analog power supply, the first voltmeter is arranged between the first circular contact and the second circular contact, and the first ammeter is arranged between the second circular contact and the positive electrode of the external direct current photovoltaic analog power supply; the third circular contact is connected with the positive pole of the external direct current load, the fourth circular contact is connected with the negative pole of the external direct current load, the second voltmeter is arranged between the third circular contact and the fourth circular contact, and the second ammeter is arranged between the third circular contact and the positive pole of the external direct current load; the first voltmeter, the first ammeter, the second voltmeter and the second ammeter are respectively connected with the control and detection module.
Preferably, the circuit board positioning jig comprises a base, a wrench, a connecting mechanism and a pressing plate; the base is connected with the wrench, the wrench is connected with the pressure plate through the connecting mechanism, and the pressure plate is provided with a plurality of pressing pins.
Preferably, the control and detection module comprises a single chip microcomputer, and a first interface, a second interface, a third interface and a fourth interface which are connected with the single chip microcomputer; the first interface is connected with an interface on the pressing plate, the second interface is connected with an external direct-current photovoltaic analog power supply, the third interface is connected with an external direct-current load, and the fourth interface is connected with an upper computer; the singlechip is connected with the communication module and the voltage and current detection unit.
Further preferably, the single chip microcomputer is stm32F4 xx.
Preferably, the communication module matches with the communication module on the photovoltaic optimizer circuit board.
Compared with the prior art, the utility model discloses following profitable technological effect has:
the utility model discloses a photovoltaic optimizer calibration device, can accurately and reliably position a photovoltaic optimizer circuit board through circuit board positioning jig and clamp plate, can conveniently and quickly accomplish the calibration of each function of the photovoltaic optimizer through control and detection module, communication module, external direct current photovoltaic analog power supply, external direct current load and voltage current detection unit; by connecting the upper computer, the control of the checking device and the analysis and comparison of the data can be realized quickly. The batch and accurate verification of the photovoltaic optimizers is realized, the labor cost is reduced, and quality assurance is provided for normal use of the photovoltaic modules.
Drawings
Fig. 1 is a schematic view of the overall structure of the photovoltaic optimizer calibration device of the present invention;
fig. 2 is a schematic top view of the platen of the present invention;
fig. 3 is a schematic diagram of the connection of the control and detection module of the present invention.
In the figure: 1-a circuit board positioning jig, 11-a base, 12-a wrench, 13-a connecting mechanism, 14-a pressing plate and 15-a pressing pin; 2-pressing plate, 21-first circular contact, 22-second circular contact, 23-third circular contact, 24-fourth circular contact and 25-10pin interface; 3-control and detection module, 31-first interface, 32-second interface, 33-third interface, 34-fourth interface, 35-single chip; 4-a communication module; 5-an external direct current photovoltaic analog power supply, 51-an external direct current photovoltaic analog power supply cathode, 52-an external direct current photovoltaic analog power supply anode; 6-external direct current load, 61-external direct current load anode, 62-external direct current load cathode; 7-voltage current detection unit, 71-first voltmeter, 72-first ammeter, 73-second voltmeter and 74-second ammeter.
Detailed Description
The invention will be described in further detail with reference to the following drawings and specific examples, which are intended to illustrate and not to limit the invention:
as shown in fig. 1, the calibration device of the photovoltaic optimizer of the present invention comprises a circuit board positioning fixture 1, a pressing plate 2, a control and detection module 3, a communication module 4, an external dc photovoltaic analog power source 5, an external dc load 6 and a voltage and current detection unit 7; the circuit board positioning jig 1 comprises a base 11, a wrench 12, a connecting mechanism 13 and a pressing plate 14; the base 11 is connected with a wrench 12, the wrench 12 is connected with a pressure plate 14 through a connecting mechanism 13, and a plurality of pressure pins 15 are arranged on the pressure plate 14. The control and detection module 3, the communication module 4, the external dc photovoltaic analog power supply 5, the external dc load 6 and the voltage and current detection unit 7 may be disposed inside the base 11.
As shown in fig. 2, the contacts on the pressure plate 2 include a first circular contact 21, a second circular contact 22, a third circular contact 23, and a fourth circular contact 24, and the interface is a 10pin interface 25; the voltage current detection unit 7 includes a first voltmeter 71, a first ammeter 72, a second voltmeter 73, and a second ammeter 74; the first circular contact 21 is connected with the negative pole 51 of the external direct-current photovoltaic analog power supply, the second circular contact 22 is connected with the positive pole 52 of the external direct-current photovoltaic analog power supply, the first voltmeter 71 is arranged between the first circular contact 21 and the second circular contact 22, and the first ammeter 72 is arranged between the second circular contact 22 and the positive pole 52 of the external direct-current photovoltaic analog power supply; the third circular contact 23 is connected with the positive pole 61 of the external direct current load, the fourth circular contact 24 is connected with the negative pole 62 of the external direct current load, and the communication module 4 is arranged between the contacts and the connection lines of the positive pole and the negative pole of the external direct current load 6; the second voltmeter 73 is arranged between the third circular contact 23 and the fourth circular contact 24, and the second ammeter 74 is arranged between the third circular contact 23 and the external direct-current load anode 61.
The communication module 4 is matched with a communication module on the photovoltaic optimizer circuit board, and when the communication module on the photovoltaic optimizer circuit board adopts a PLC communication module which is commonly used at present, the communication module 4 is also a PLC communication module, mainly comprises a carrier transformer, a carrier generator and a developed device, and has the functions of sending and receiving. The single chip microcomputer 35 sends out information through a serial port, the signal is combined with a base frequency signal generated by a carrier generator in the communication module 4, and the high-frequency signal generated on a power line through a carrier transformer is amplified through power and is transmitted to a PLC communication module on a circuit board of the photovoltaic optimizer.
As shown in fig. 3, the control and detection module 3 includes a single chip microcomputer 35, and a first interface 31, a second interface 32, a third interface 33, and a fourth interface 34 connected to the single chip microcomputer 35, where the second interface 32, the third interface 33, and the fourth interface 34 are com ports; the first interface 31 is connected with an interface on the pressing plate 2, the second interface 32 is connected with the external direct current photovoltaic analog power supply 5, the third interface 33 is connected with the external direct current load 6, and the fourth interface 34 is connected with an upper computer. The single chip microcomputer 35 is connected with the communication module 4, the first voltmeter 71, the first ammeter 72, the second voltmeter 73 and the second ammeter 74. The single chip microcomputer 35 can adopt stm32F4xx built with LABview development environment.
When the circuit board positioning jig is used, the back face of the photovoltaic optimizer circuit board is abutted against the pressing plate 2 by the circuit board positioning jig 1, the positive and negative poles of the input end and the positive and negative poles of the output end of the photovoltaic optimizer circuit board are respectively connected with the first circular contact 21, the second circular contact 22, the third circular contact 23 and the fourth circular contact 24, and the initialization port of the photovoltaic optimizer circuit board is connected with the 10pin interface 25.
Above-mentioned photovoltaic optimizer calibration equipment is at the during operation:
the photovoltaic optimizer circuit board is fixed on the pressing plate 2 by operating the circuit board positioning jig 1, the positive and negative poles of the input end and the positive and negative poles of the output end of the photovoltaic optimizer circuit board are respectively connected with the contacts on the pressing plate 2, the initialization port of the photovoltaic optimizer circuit board is connected with the interface on the pressing plate 2, and the upper computer burns the firmware into the photovoltaic optimizer circuit board through the interface on the pressing plate 2;
the upper computer controls the external direct current photovoltaic analog power supply 5 to be in a constant voltage mode and controls the external direct current load 6 to be in a no-load mode through the control and detection module 3; the control and detection module 3 reads the input and output voltage of the photovoltaic optimizer circuit board measured by the voltage and current detection unit 7, the control and detection module 3 sets a first input and output voltage initial value of the photovoltaic optimizer circuit board through an interface on the pressing plate 2, so that the first input and output voltage initial value is consistent with the input and output voltage of the photovoltaic optimizer circuit board measured by the voltage and current detection unit 7, the voltage value of the external direct current photovoltaic analog power supply 5 is changed after the setting is finished, and the steps are repeated to obtain a second input and output voltage initial value; the upper computer controls the external direct current photovoltaic analog power supply 5 to be in a constant current mode and controls the external direct current load 6 to be in a constant voltage mode through the control and detection module 3; the control and detection module 3 reads the input and output current of the photovoltaic optimizer circuit board measured by the voltage and current detection unit 7, the control and detection module 3 sets a first input and output current initial value of the photovoltaic optimizer circuit board through an interface on the pressing plate 2, so that the first input and output current initial value is consistent with the input and output current of the photovoltaic optimizer circuit board measured by the voltage and current detection unit 7, the current value of the external direct current photovoltaic analog power supply 5 is changed after the setting is finished, and the steps are repeated to obtain a second input and output current initial value; judging whether the communication function of the photovoltaic optimizer circuit board is normal or not by comparing a first input/output voltage initial value, a first input/output current initial value, a second input/output voltage initial value and a second input/output current initial value of the photovoltaic optimizer circuit board read from the communication module 4 by the control and detection module 3, and a first input/output voltage initial value, a first input/output current initial value, a second input/output voltage initial value and a second input/output current initial value read from an interface on the pressing plate 2; because the voltage and the current are in a linear relation, the voltage and the current are used for testing two groups of data.
The control and detection module 3 reads a prestored IV curve of a certain photovoltaic module from an upper computer, and the control and detection module 3 controls the external direct current photovoltaic analog power supply 5 to change voltage and current within a period of time according to the IV curve, so that the input and output voltage and current values of the circuit board of the photovoltaic optimizer are changed; the control and detection module 3 controls the external direct current load 6 to be in a constant voltage mode, the control and detection module 3 obtains a power value according to the voltage and current value of the IV curve, and the power value is compared with the input and output power of the photovoltaic optimizer circuit board obtained from the voltage and current detection unit 7 to judge whether the maximum power tracking efficiency value and the electrical efficiency value are accurate or not. In order to improve the calibration accuracy, whether the maximum power tracking efficiency value and the electrical efficiency value are accurate or not can be judged by respectively using the low-load IV curve and the high-load IV curve.
The utility model discloses an above-mentioned photovoltaic optimizer calibration equipment's operating method, the voltage and current power precision of check-up photovoltaic optimizer that can be quick in batches reduces the maximum power point and tracks the deviation, improves photovoltaic optimizer efficiency to and whether the MPPT function is normal, can obviously shorten check-up time, improve production efficiency.
It should be noted that the above description is only a part of the embodiments of the present invention, and equivalent changes made by the system described in the present invention are all included in the protection scope of the present invention. The technical field of the present invention can be replaced by other embodiments described in a similar manner, without departing from the structure of the present invention or exceeding the scope defined by the claims, which belong to the protection scope of the present invention.
Claims (6)
1. A photovoltaic optimizer calibration device is characterized by comprising a circuit board positioning jig (1), a pressing plate (2), a control and detection module (3), a communication module (4), an external direct current photovoltaic analog power supply (5), an external direct current load (6) and a voltage and current detection unit (7);
the pressing plate (2) is provided with a plurality of contacts and interfaces connected with the control and detection module (3), and the contacts are respectively connected with the connection of the positive electrode and the negative electrode of the external direct current photovoltaic analog power supply (5) and the connection of the contacts with the positive electrode and the negative electrode of the external direct current load (6) and a voltage and current detection unit (7);
the communication module (4) is arranged between the contact and the connection wires of the positive electrode and the negative electrode of the external direct current load (6); the communication module (4), the external direct-current photovoltaic analog power supply (5), the external direct-current load (6) and the voltage and current detection unit (7) are respectively connected with the control and detection module (3);
when the circuit board positioning jig is used, the circuit board positioning jig (1) fixes the photovoltaic optimizer circuit board on the pressing plate (2), the positive and negative poles of the input end and the positive and negative poles of the output end of the photovoltaic optimizer circuit board are respectively connected with the contacts on the pressing plate (2), and the initialization port of the photovoltaic optimizer circuit board is connected with the interface on the pressing plate (2); the control and detection module (3) is connected with an upper computer.
2. The photovoltaic optimizer verification device according to claim 1, wherein the contacts on the pressure plate (2) comprise a first circular contact (21), a second circular contact (22), a third circular contact (23) and a fourth circular contact (24), and the interface is a 10pin interface (25); the voltage and current detection unit (7) comprises a first voltmeter (71), a first ammeter (72), a second voltmeter (73) and a second ammeter (74);
the first circular contact (21) is connected with the negative pole (51) of the external direct-current photovoltaic analog power supply, the second circular contact (22) is connected with the positive pole (52) of the external direct-current photovoltaic analog power supply, the first voltmeter (71) is arranged between the first circular contact (21) and the second circular contact (22), and the first ammeter (72) is arranged between the second circular contact (22) and the positive pole (52) of the external direct-current photovoltaic analog power supply; the third circular contact (23) is connected with an external direct-current load anode (61), the fourth circular contact (24) is connected with an external direct-current load cathode (62), the second voltmeter (73) is arranged between the third circular contact (23) and the fourth circular contact (24), and the second ammeter (74) is arranged between the third circular contact (23) and the external direct-current load anode (61); the first voltmeter (71), the first ammeter (72), the second voltmeter (73) and the second ammeter (74) are respectively connected with the control and detection module (3).
3. The photovoltaic optimizer verification device according to claim 1, wherein the circuit board positioning jig (1) comprises a base (11), a wrench (12), a connecting mechanism (13) and a pressing plate (14); the base (11) is connected with a wrench (12), the wrench (12) is connected with a pressure plate (14) through a connecting mechanism (13), and a plurality of pressure pins (15) are arranged on the pressure plate (14).
4. The photovoltaic optimizer verification device according to claim 1, wherein the control and detection module (3) comprises a single chip microcomputer (35) and a first interface (31), a second interface (32), a third interface (33) and a fourth interface (34) connected to the single chip microcomputer (35); the first interface (31) is connected with an interface on the pressing plate (2), the second interface (32) is connected with an external direct-current photovoltaic analog power supply (5), the third interface (33) is connected with an external direct-current load (6), and the fourth interface (34) is connected with an upper computer; the singlechip (35) is connected with the communication module (4) and the voltage and current detection unit (7).
5. The photovoltaic optimizer verification device according to claim 4, wherein the single chip microcomputer (35) is stm32F4 xx.
6. The pv optimizer verification device according to claim 1, wherein the communication module (4) is matched to a communication module on the pv optimizer circuit board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020313317.1U CN211905552U (en) | 2020-03-13 | 2020-03-13 | Photovoltaic optimizer calibration device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020313317.1U CN211905552U (en) | 2020-03-13 | 2020-03-13 | Photovoltaic optimizer calibration device |
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| Publication Number | Publication Date |
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| CN211905552U true CN211905552U (en) | 2020-11-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202020313317.1U Active CN211905552U (en) | 2020-03-13 | 2020-03-13 | Photovoltaic optimizer calibration device |
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| CN (1) | CN211905552U (en) |
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- 2020-03-13 CN CN202020313317.1U patent/CN211905552U/en active Active
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