CN219718171U - Solar cell equipment - Google Patents
Solar cell equipment Download PDFInfo
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- CN219718171U CN219718171U CN202320264043.5U CN202320264043U CN219718171U CN 219718171 U CN219718171 U CN 219718171U CN 202320264043 U CN202320264043 U CN 202320264043U CN 219718171 U CN219718171 U CN 219718171U
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- 230000005669 field effect Effects 0.000 claims description 38
- 239000003990 capacitor Substances 0.000 claims description 31
- 238000006243 chemical reaction Methods 0.000 claims description 7
- 238000010248 power generation Methods 0.000 abstract description 6
- 238000010586 diagram Methods 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
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Abstract
The utility model discloses a solar cell control circuit which comprises a solar cell module for converting light energy into electric energy, wherein the solar cell module comprises a plurality of solar cell units which are connected in parallel, the plurality of solar cell units comprise a plurality of solar cell subunits which are connected in series, unidirectional circulation electronic elements for bypass are arranged in the solar cell subunits, and the directions of the unidirectional circulation electronic elements are consistent with the current flowing directions generated by the solar cell subunits. All solar battery units independently operate, and if part of solar battery units are shielded in one solar battery module, the shielded solar battery units stop working and cannot block the power generation of other solar battery units, so that the influence of shielding or faults on the whole solar battery module is reduced to the greatest extent, and meanwhile, the solar battery is protected.
Description
Technical Field
The utility model relates to the field of solar cells, in particular to solar cell equipment.
Background
The current solar panel structure is composed of one to a plurality of solar cell series groups, because each solar cell is connected in series, if sunlight of one solar cell is blocked or the solar cell fails when the solar panel works, the voltage and current of the whole solar cell circuit can be reduced, the output power of the whole solar panel is greatly reduced, the loss is higher, and the whole solar panel needs to be stopped working during maintenance, so that the operation is more complex.
Disclosure of Invention
The present utility model aims to at least solve the technical problems existing in the prior art. By changing the solar cell architecture, the condition that the output power of the solar cell panel is reduced when the solar cell is shielded is reduced.
The present utility model provides a solar cell apparatus comprising: the solar cell module is used for converting light energy into electric energy and comprises a plurality of solar cell units, the plurality of solar cell units comprise a plurality of solar cell subunits connected in series, each solar cell subunit comprises a solar cell piece and a unidirectional circulating electronic element used for bypass, and the direction of the unidirectional circulating electronic element is consistent with the current flowing direction generated by the solar cell piece.
Further, a plurality of the solar battery cells in the solar battery module are connected in parallel.
Further, the solar cell module further comprises a main boost module, wherein the input end of the main boost module is connected with the output end of the solar cell module, and is used for boosting the output voltage of the solar cell module to a preset voltage.
Further, the main boost module comprises a main boost circuit and a main control device, the main boost circuit and the main control device are connected with the output end of the solar cell module, and the main control device is used for enabling the solar cell module to start or stop according to the voltage signal output by the solar cell module and the output signal of the main boost circuit and stabilizing the output voltage of the solar cell module to a certain set voltage or a fixed voltage interval.
Further, the main boost circuit is further provided with a solar cell device output end, and the output voltage of the solar cell device output end is the output voltage of the current conversion through the main boost circuit after the solar cell modules are connected in parallel.
Further, the main boost circuit includes first electric capacity, second electric capacity, first inductance, first field effect tube, first diode and first resistance, solar module's output all with main control unit's first port, the one end of first electric capacity and the one end of first inductance are connected, the other end of first inductance with the positive pole of first diode and the drain electrode of first field effect tube are connected, the grid of first field effect tube with main control unit's second port is connected, the source of first field effect tube with main control unit's third port and the one end of first resistance are connected, the negative pole of first diode with the one end of second electric capacity all with main control unit's fourth port is connected, the other end of first electric capacity, the other end of first resistance and the other end of second electric capacity all ground connection.
Further, one end of the unidirectional circulation electronic element is connected with the negative electrode of the solar cell piece of the solar cell subunit, and the other end of the unidirectional circulation electronic element is connected with the positive electrode of the solar cell piece of the solar cell subunit.
Further, the solar cell unit comprises a sub-boosting module, wherein the input end of the sub-boosting module is connected with the output end of the solar cell subunit and is used for boosting the output voltage of the solar cell subunit to a preset voltage; the sub-boost module comprises a sub-boost circuit and a sub-control device, and the sub-boost circuit and the sub-control device are connected with the output end of the solar cell subunit.
Further, the sub-boost circuit comprises a third capacitor, a fourth capacitor, a second inductor, a second diode, a second field effect tube and a second resistor, the output end of the solar cell subunit is connected with the first port of the sub-control device, one end of the third capacitor and one end of the second inductor, the other end of the second inductor is connected with the anode of the second diode and the drain of the second field effect tube, the grid electrode of the second field effect tube is connected with the second port of the sub-control device, the source electrode of the second field effect tube is connected with the third port of the sub-control device and one end of the second resistor, the cathode of the second diode and one end of the fourth capacitor are connected with the fourth port of the sub-control device, and the other end of the third capacitor, the other end of the fourth capacitor and the other end of the second resistor are grounded.
Further, the sub-booster circuit is further provided with a solar cell unit output end, and the output ends of a plurality of solar cell sub-units are collected to be the solar cell unit output end.
The beneficial effects of the utility model are as follows: all solar cell subunits independently operate, and if one solar cell subunit is shielded, solar cells in the shielded solar cell subunit are bypassed by the unidirectional circulating element, so that the power output of other solar cell subunits is not influenced; in a solar cell module, all solar cells independently operate, if one solar cell is shielded, a sub-booster circuit in the shielded solar cell stops working and does not obstruct the power generation of other solar cells, so that the influence of shielding or faults on the whole solar cell module is reduced to the greatest extent, and the solar cells are protected at the same time.
Drawings
FIG. 1 is a circuit diagram of a solar control circuit solar cell module of the present utility model;
FIG. 2 is a circuit diagram of a solar control circuit solar cell of the present utility model;
fig. 3 is a circuit diagram of a solar cell subunit of a solar control circuit according to the present utility model.
Reference numerals: 1. a solar cell module; 2. a solar cell unit; 21. a solar cell subunit; 201. a solar cell; 202. a unidirectional flow-through electronic component; 3. a main boost module; 31. a main booster circuit 32 and a main control device; 301. a first port of the main control device; 302. a second port of the main control device; 303. a third port of the main control device; 304. a fourth port of the main control device; 4. a sub-boost module; 41. a sub-booster circuit; 42. a sub-control device; 401. a first port of the sub-control device; 402. a secondary control device second port; 403. a fourth port of the sub-control device; 404. a fourth port of the sub-control device;
r1, a first resistor; r2, a second resistor; c1, a first capacitor; c2, a second capacitor; d1, a first diode; d2, a second diode; q1, a first field effect transistor; q2, a second field effect transistor; l1, a first inductor; l2, a second inductor; u (U) A An output end of the solar cell device; u (U) B And the output end of the solar cell unit.
Detailed Description
Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.
In the description of the present utility model, the descriptions of the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The following description of the embodiments of the utility model will be given with reference to the accompanying drawings
Referring to fig. 1 to 2, further as an alternative embodiment, a solar cell module 1 for converting light energy into electric energy, the solar cell module 1 includes a plurality of solar cell units 2, the plurality of solar cell units 2 includes a plurality of solar cell sub-units 21 connected in series, the solar cell sub-units 21 include solar cell sheets 201 and unidirectional flow electronic elements 202 for bypassing the solar cell sheets 201, wherein the unidirectional flow electronic elements 202 have a direction consistent with a current flow direction generated by the solar cell sheets 201, the solar cell units 2 are connected in parallel with each other, and the plurality of solar cell sub-units 21 are connected in series with each other; the main control device 32 is connected with an output end of the solar cell module 1, and is used for controlling the start or stop of the solar cell module 1 according to the output voltage of the solar cell module 1, the solar cell module 1 further comprises a main boost module 3, an input end of the main boost module 3 is connected with the output end of the solar cell module 1, and is used for boosting the output voltage of the solar cell module 1 to a preset voltage, the solar cell module 1 is composed of a plurality of solar cell units 2, wherein the solar cell units 2 are mutually connected in parallel, solar cell subunits 21 in each solar cell unit 2 are connected in series, each solar cell subunit 21 independently operates, and finally, the output of the solar cell module 1 is connected to the main boost circuit 31.
Specifically, the output end U of the solar cell device A The output current of the solar cell module 1 after the current conversion process is performed via the main boost circuit 3; output end U of solar cell unit B To output currents of the plurality of solar cell sub-units 21 after the current conversion process via the sub-boost circuit 41, a solar cell unit output terminal U B I.e. representing the output current of the solar cells 2, each solar cell output U B The output currents are connected in parallel and finally converged into the output of the solar cell module 1, the output voltage of the solar cell module is stabilized to a certain set voltage or a fixed voltage interval through the main control device 32, the output voltage is then lifted to a preset voltage through the main booster circuit 3 and finally conveyed to a load, and the normal operation of other solar cell subunits 21 is not influenced when a certain solar cell subunit 21 is shielded or has a fault by using the connection mode; when one solar cell is blocked, the sub-booster circuit in the blocked solar cell stops working and does not block the power generation of other solar cells, thereby minimizing the influence of blocking on the whole solar cell moduleAnd at the same time, protecting the solar cell.
Referring to fig. 1, as a further alternative embodiment, the main boost circuit 3 includes a first capacitor C1, a second capacitor C2, a first inductor L1, a first field effect transistor Q1, a first diode D1, and a first resistor R1, wherein the output ends of the solar cell module 1 are all connected to the first port 301 of the main control device 32, one end of the first capacitor C1, and one end of the first inductor L1, the other end of the first inductor L1 is connected to the anode of the first diode D1 and the drain of the first field effect transistor Q1, the gate of the first field effect transistor Q1 is connected to the second port 302 of the main control device 32, the source of the first field effect transistor Q1 is connected to the third port 303 of the main control device 32 and one end of the first resistor R1, one end of the cathode of the first diode D1 and one end of the second resistor R2 are all connected to the fourth port 304 of the main control device 32, the other end of the first capacitor C1, the other end of the first resistor R1, and the other end of the second capacitor C2 are all grounded, through the connection of the main boost circuit 3 and the main control device 32, the main control device 32 can detect the output voltage of the solar cell module 1, the output voltage converted by the main boost circuit 3 and the current passing through the first field effect transistor Q1, and output control signals to control the turn-off and turn-on of the first field effect transistor Q1, the output voltage of the solar cell module 1 is stabilized within a certain set voltage or voltage range interval, if the output voltage converted by the solar cell module 1 or the main boost circuit 3 is too high or too low, at the moment, the main control device 32 turns off the first field effect transistor Q1 and sends a stop signal to enable the main control device 32 to enter a protection mode and enable all solar cell units 2 to stop running, the output signals of the first field effect transistor Q1 are outputted by the main control device 32 to enable the turn-off or turn-on of the field effect transistor, when the output voltage is within a certain voltage range, the first field effect transistor Q1 works, and when the output voltage is outside the set voltage range, the first field effect transistor Q1 stops working, so that protection and control of the solar cell module are achieved, wherein the main boost circuit 3 is further provided with a solar cell device output end, and the output voltage of the solar cell device is the output voltage after the current conversion of the plurality of solar cell modules is performed through the main boost circuit 3 after the solar cell modules are connected in parallel.
Referring to fig. 2, as a further alternative embodiment, the solar cell unit 2 further includes a sub-boost module 4, and an input terminal of the sub-boost module 4 is connected to an output terminal of the sub-solar cell subunit 21, for boosting the output voltage of the solar cell subunit 21 to a preset voltage; the sub-boost module 4 comprises a sub-boost circuit 41 and a sub-control device 42, the sub-boost circuit 41 and the sub-control device 42 are connected with the output end of the solar cell subunit 21, and the sub-control device 42 is used for controlling the starting or stopping of the solar cell unit 2 according to the output voltage of the solar cell subunit 21; the solar cell subunit 21 and the sub-control device 42 are also connected with a sub-boost circuit 41 for converting the low-voltage current of the solar cell subunit 21 into high-voltage current; the sub-boost circuit 41 comprises a third capacitor C3, a fourth capacitor C4, a second inductor L2, a second diode D2, a second field effect transistor Q2 and a second resistor R2, the output end of the solar cell subunit 21 is connected with the first port 401 of the sub-control device 42, one end of the third capacitor C3 and one end of the second inductor L2, the other end of the second inductor L2 is connected with the anode of the second diode D2 and the drain of the second field effect transistor Q2, the grid electrode of the second field effect transistor Q2 is connected with the second port 402 of the sub-control device 42, the source electrode of the second field effect transistor Q2 is connected with the third port 403 of the sub-control device 42 and one end of the second resistor R2, the cathode of the second diode D2 and one end of the fourth capacitor C4 are all connected with the fourth port 404 of the sub-control device 42, the other end of the third capacitor C3, the other end of the second resistor R2 and the other end of the fourth capacitor C4 are all grounded, the low-voltage direct current of the plurality of solar cell subunits 21 is used for being converted into high-voltage direct current flow, and blocking the solar cell subunits 2 are not blocked by the second field effect transistor Q2, and when the second field effect transistor Q2 is not blocked by the second field effect transistor Q2, and the second field effect transistor Q2 is set to be in the working range, when the second field effect transistor Q2 is not blocked; in addition, the sub-control device 42 may send a stop signal to control the start and stop of the solar battery units 2, so as to realize protection and control of the solar battery units 2, so that each solar battery unit 2 can output effective power under the control and protection of the sub-control device 42.
It should be noted that, the sub-control device 42 may be implemented by, but not limited to, an MPPT controller, and may also implement tracking of the maximum power point of the solar cell 2 while controlling the solar cell 2 and the sub-boost circuit 41, so as to ensure the power generation efficiency of the solar cell 2; the voltage interval of the sub-control device 42 of the solar cell 2 may be different from the voltage interval of the main control device 32 of the solar cell module 1.
Referring to fig. 3, as a further alternative embodiment, each solar cell subunit 21 in the solar cell unit 2 includes a unidirectional flow-through electronic element 202 connected in parallel to the solar cell piece 201, for bypassing the solar cell piece 201 in the solar cell subunit 21 when the solar cell subunit 21 fails or there is a shade; specifically, the unidirectional current electronic component 202 selected in the present embodiment is a diode, each solar cell subunit 21 is formed by cutting a solar cell piece with a size of 10cm to 20cm, which is currently common, into small solar cell pieces, for example, one ninth of the solar cell subunits 21 before cutting, and connecting a plurality of solar cell subunits 21 in series, each solar cell subunit 21 is internally connected with a diode in parallel, the anode of the diode is connected with the cathode of the solar cell piece 201, the cathode of the diode is connected with the anode of the solar cell piece 201, if the solar cell piece 201 in the solar cell subunit 21 is blocked, the solar cell piece is bypassed by the parallel diode, and the normal operation of other solar cell subunits 21 of the solar cell unit 2 is not affected, and the output power of the other solar cell units 2 is not affected under the condition that the solar cell subunits 21 are blocked or fail, so as to ensure the overall power generation effect of the solar cell module 1.
The working principle of the solar cell control circuit of the utility model is as follows: the solar battery module is further decomposed into a plurality of solar battery units, each solar battery unit works independently, each solar battery unit performs primary current conversion through the sub-booster circuit, the solar battery module performs voltage conversion through the main booster circuit, the solar battery units and the solar battery modules are managed through the control device, so that solar battery protection and control are achieved, in addition, a unidirectional circulation electronic element is connected in parallel in each solar battery subunit, when the solar battery subunits are shielded or fail, the unidirectional circulation electronic element bypasses the solar battery pieces, normal operation of other solar battery subunits is not affected, and when one solar battery unit is shielded, the sub-booster circuit in the shielded solar battery units stops working and does not block power generation of other solar battery units.
While the preferred embodiment of the present utility model has been described in detail, the utility model is not limited to the embodiments, and various equivalent changes and substitutions can be made by those skilled in the art without departing from the spirit of the utility model, and these equivalent changes and substitutions are intended to be included in the scope of the present utility model as defined in the appended claims.
Claims (10)
1. A solar cell apparatus, comprising: the solar cell module is used for converting light energy into electric energy and comprises a plurality of solar cell units, the plurality of solar cell units comprise a plurality of solar cell subunits connected in series, each solar cell subunit comprises a solar cell piece and a unidirectional circulating electronic element used for bypass, and the direction of the unidirectional circulating electronic element is consistent with the current flowing direction generated by the solar cell piece.
2. The solar cell apparatus of claim 1, wherein a plurality of the solar cells in the solar cell module are connected in parallel.
3. The solar cell apparatus of claim 2, wherein the solar cell module further comprises a main boost module, an input of the main boost module being connected to an output of the solar cell module for boosting an output voltage of the solar cell module to a preset voltage.
4. The solar cell apparatus according to claim 3, wherein the main boost module includes a main boost circuit and a main control device, the main boost circuit and the main control device being connected to an output terminal of the solar cell module, the main control device being configured to start or stop the solar cell module according to a voltage signal output from the solar cell module and an output signal of the main boost circuit, and stabilize an output voltage of the solar cell module to a certain set voltage or a fixed voltage interval.
5. The solar cell apparatus according to claim 4, wherein the main boost circuit is further provided with a solar cell apparatus output terminal, and an output voltage of the solar cell apparatus output terminal is an output voltage of the plurality of solar cell modules which are connected in parallel and subjected to current conversion via the main boost circuit.
6. The solar cell apparatus according to claim 4, wherein the main boost circuit comprises a first capacitor, a second capacitor, a first inductor, a first field effect transistor, a first diode, and a first resistor, wherein the output ends of the solar cell module are all connected to the first port of the main control device, one end of the first capacitor, and one end of the first inductor, the other end of the first inductor is connected to the anode of the first diode and the drain of the first field effect transistor, the gate of the first field effect transistor is connected to the second port of the main control device, the source of the first field effect transistor is connected to the third port of the main control device and one end of the first resistor, the cathode of the first diode and one end of the second capacitor are all connected to the fourth port of the main control device, and the other end of the first capacitor, the other end of the first resistor, and the other end of the second capacitor are all grounded.
7. The solar cell apparatus of claim 1, wherein one end of the unidirectional flow electronic element is connected to a solar cell negative electrode of the solar cell subunit and the other end of the unidirectional flow electronic element is connected to a solar cell positive electrode of the solar cell subunit.
8. The solar cell apparatus of claim 1, wherein the solar cell unit comprises a sub-boost module, an input of the sub-boost module being connected to an output of the solar cell subunit for boosting an output voltage of the solar cell subunit to a preset voltage; the sub-boost module comprises a sub-boost circuit and a sub-control device, and the sub-boost circuit and the sub-control device are connected with the output end of the solar cell subunit.
9. The solar cell apparatus according to claim 8, wherein the sub-boost circuit includes a third capacitor, a fourth capacitor, a second inductor, a second diode, a second field effect transistor, and a second resistor, an output terminal of the solar cell sub-unit is connected to the first port of the sub-control device, one end of the third capacitor, and one end of the second inductor, the other end of the second inductor is connected to an anode of the second diode and a drain of the second field effect transistor, a gate of the second field effect transistor is connected to the second port of the sub-control device, a source of the second field effect transistor is connected to the third port of the sub-control device and one end of the second resistor, a cathode of the second diode and one end of the fourth capacitor are each connected to the fourth port of the sub-control device, and the other end of the third capacitor, the other end of the fourth capacitor, and the other end of the second resistor are each grounded.
10. The solar cell apparatus of claim 8, wherein the sub-boost circuit is further provided with solar cell unit outputs, the outputs of a plurality of the solar cell sub-units being collected into the solar cell unit output.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320264043.5U CN219718171U (en) | 2023-02-20 | 2023-02-20 | Solar cell equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320264043.5U CN219718171U (en) | 2023-02-20 | 2023-02-20 | Solar cell equipment |
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| Publication Number | Publication Date |
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| CN219718171U true CN219718171U (en) | 2023-09-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202320264043.5U Active CN219718171U (en) | 2023-02-20 | 2023-02-20 | Solar cell equipment |
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| CN (1) | CN219718171U (en) |
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- 2023-02-20 CN CN202320264043.5U patent/CN219718171U/en active Active
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