CN210516737U - Solar cell module - Google Patents
Solar cell module Download PDFInfo
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- CN210516737U CN210516737U CN201921447012.3U CN201921447012U CN210516737U CN 210516737 U CN210516737 U CN 210516737U CN 201921447012 U CN201921447012 U CN 201921447012U CN 210516737 U CN210516737 U CN 210516737U
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- battery
- solar cell
- cell module
- cell
- solar
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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
Abstract
The utility model provides a solar module belongs to the photovoltaic technology field. The solar cell module comprises a plurality of cell groups which are sequentially connected in series; each battery pack comprises a one-way conduction device and two battery units; the positive electrode of each of the two battery units is connected with the cathode of the unidirectional conducting device, and the negative electrode of each of the two battery units is connected with the anode of the unidirectional conducting device. The utility model provides a solar module can reduce the power loss that hot spot effect caused.
Description
Technical Field
The utility model belongs to the technical field of the photovoltaic, more specifically say, relate to a solar module.
Background
The solar cell is a device for converting light energy into direct current by utilizing the photovoltaic effect of a cell, a solar cell module is of a plurality of cell series structures, when the solar cell module works, the solar cell module is shielded, so that the shielded part in the solar cell module can not normally generate electricity, the current and the voltage of the cell in the solar cell module are changed, the product of the local current and the local voltage of the solar cell module is increased, the temperature of the shielded part is increased, the process is called as hot spot effect, the hot spot effect enables the shielded part to be damaged due to overhigh temperature, and the normal work of the unshielded part in the solar cell module is influenced. In the prior art, the power loss of the whole solar cell module is caused by the hot spot effect of the solar cell module.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a solar module aims at solving the problem that solar module among the prior art causes monoblock solar module's power loss because of the hot spot effect.
In order to achieve the above object, the utility model adopts the following technical scheme: provided is a solar cell module including:
a plurality of battery packs connected in series in sequence;
each battery pack of the plurality of battery packs comprises at least one unidirectional conducting device and two battery units;
the positive electrode of each of the two battery units is connected with the cathode of the unidirectional conducting device, and the negative electrode of each of the two battery units is connected with the anode of the unidirectional conducting device.
Optionally, each of the two battery cells includes two battery strings connected in parallel.
Optionally, the battery string comprises a plurality of battery slices connected in series.
Optionally, the battery slice is 1/4 slice or 1/6 slice obtained by laser scribing the battery slice.
Optionally, two adjacent battery slices in the battery string are welded by an ultrathin welding strip technology.
Optionally, an interconnection bar is arranged between the two parallel-connected battery strings every preset number of battery slices.
Optionally, the solar cell module further comprises a bus bar; the plurality of battery packs are connected in series by the bus bar, and two battery cells included in each of the plurality of battery packs are disposed at both sides of the bus bar.
Optionally, the unidirectional conducting device included in each of the plurality of battery packs is disposed on the bus bar;
the solar cell module further includes: a plurality of junction boxes;
every two adjacent unidirectional conducting devices on the bus bar are arranged in one junction box.
Optionally, the number of the plurality of battery packs is 6.
Optionally, the number of the battery slices included in the battery string is 12.
The utility model provides a solar module's beneficial effect lies in: compared with the prior art the utility model discloses with a plurality of group battery series connection, the positive pole of two battery units in every group battery all is connected with the negative pole of one-way conduction device, the negative pole of two battery units all is connected with the positive pole of one-way conduction device, so that one-way conduction device is parallelly connected with two battery units respectively, one-way conduction device is the reverse bias state, and, parallel connection between two battery units, when one battery unit produces the hot spot effect, the electric current that flows through one-way conduction device is with one-way conduction device forward conduction, one-way conduction device will produce the battery unit short circuit of hot spot effect, and the battery unit that does not produce the hot spot effect normally works; the plurality of battery packs are connected in series, the battery pack which does not generate the hot spot effect is not influenced by the battery unit which generates the hot spot effect, and the hot spot effect cannot cause power loss of the whole solar battery assembly. The utility model discloses the power loss that hot spot effect caused monoblock solar module has been reduced.
Drawings
Fig. 1 is a schematic structural diagram of a solar cell module according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram between battery slices according to an embodiment of the present invention.
Detailed Description
In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1, a solar cell module according to the present invention will now be described. The solar cell module comprises a plurality of cell groups 1 which are sequentially connected in series;
each battery pack 1 of the plurality of battery packs 1 includes at least one unidirectional conducting device 12 and two battery cells 11;
the positive electrode of each of the two battery cells 11 is connected to the cathode of the unidirectional conducting device 12, and the negative electrode of each of the two battery cells 11 is connected to the anode of the unidirectional conducting device 12.
The utility model provides a solar battery assembly, compared with the prior art, the utility model discloses with a plurality of group battery 1 series connection, the one-way conduction device can include the diode, two battery cell 11's in every group battery 1 positive pole all is connected with diode 12's negative pole, two battery cell 11's negative pole all is connected with diode 12's positive pole, so that diode 12 connects in parallel with two battery cell 11 respectively, diode 12 is the reverse bias state, and, parallel connection between two battery cell 11, when one battery cell 11 produced the hot spot effect, the electric current that flows through diode 12 switched on diode 12 forward, diode 12 short circuit with the battery cell 11 who produces the hot spot effect, and the battery cell 11 who does not produce the hot spot effect normally works; the plurality of battery packs 1 are connected in series, the battery pack 1 without the hot spot effect is not influenced by the battery unit 11 with the hot spot effect, and the hot spot effect cannot cause power loss of the whole solar battery assembly. The utility model discloses the power loss that hot spot effect caused monoblock solar module has been reduced.
Optionally, referring to fig. 1, as a specific implementation manner of the solar cell module provided by the present invention, each of the two battery units 11 includes two battery strings 111 connected in parallel.
In a specific embodiment of the present invention, each battery unit 11 includes two parallel battery strings 111. The unidirectional conducting device may include a diode, a cathode of each battery string 111 is connected to an anode of the diode 12, an anode of each battery string 111 is connected to a cathode of the diode 12, each battery unit 11 is connected to the diode 12 in parallel, and the battery units 11 are connected in parallel.
Optionally, referring to fig. 1, as a specific implementation of the solar cell module provided by the present invention, the cell string 111 includes a plurality of cell slices 1111 connected in series.
In the embodiment of the present invention, the battery string 111 includes a plurality of battery slices 1111 connected in series, the battery slices 1111 are photoelectric semiconductor slices directly generating electricity by using sunlight, each battery slice 1111 generates current under the irradiation of the sun, and the current generated by the battery slices 1111 on each battery string 111 is the current of the battery string 111.
Optionally, referring to fig. 1, as a specific implementation of the solar cell module provided by the present invention, the cell slice 1111 is an 1/4 slice or 1/6 slice obtained by performing laser scribing on the cell slice.
In the embodiment of the present invention, the battery slice 1111 is 1/4 or 1/6, and the battery slice is a photoelectric semiconductor slice directly generating electricity by using sunlight, and under the condition of illumination, the battery slice can output voltage and generate current under the condition of having a loop. The current of each battery slice 1111 becomes small, while the voltage of each battery slice 1111 does not change; the utility model discloses a current on battery cluster 111 reduces, and voltage and resistance are unchangeable, cause the loss power of the sliced resistance of battery on the battery cluster to reduce, and then reduced whole battery pack's sliced resistance loss power of battery, under the unchangeable prerequisite of whole battery pack's power sum (the total power of production), improved whole battery pack's output. The percentage of the output power of the assembly to the sum of the cell powers is also increased.
Exemplarily, 8 battery slices 1111 are established ties to battery cluster 111, and battery slice 1111 is 1/4 of battery piece, compares with the battery cluster of establishing ties 2 battery pieces, the utility model discloses a current I on battery cluster 1111For current I on a battery string of 2 battery plates in series21/4, the utility model discloses a voltage U and resistance R on battery cluster 111 and the battery cluster of 2 battery pieces of establishing ties are the same, utilize power formula P ═ I2R, the utility model discloses a power P of resistive loss on battery cluster 1111Power P being resistance loss of cell string of 2 cells in series21/16 of (1). The utility model discloses the loss power of the sliced resistance of battery on the battery cluster 111 has been reduced.
Optionally, referring to fig. 1 and fig. 2 together, as a specific embodiment of the solar cell module provided by the present invention, two adjacent cell slices 1111 in the cell string 111 are welded by an ultra-thin solder strip technique.
The utility model discloses an among the embodiment, connect through welding the area 1112 between two adjacent battery section 1111, and, through ultra-thin welding the area technique, the interval between two adjacent battery sections 1111 can be 0 millimeter.
Two adjacent battery section 1111 are connected through welding the area 1112 between, and the interval between two adjacent battery section 1111 is 0 millimeter, has reduced the distance between the battery section 1111, and then reduces monoblock solar module's volume, has increased the effective area that monoblock solar module received solar energy, has improved solar module and has utilized solar energy's efficiency. In addition, through the ultra-thin welding strip technology, the two adjacent battery slices 1111 are connected in a welding mode, hidden crack risks among the battery slices are reduced, and the rate of finished products of the assembly is improved.
Optionally, referring to fig. 2, as a specific embodiment of the solar cell module provided in the present invention, an interconnection bar 112 is disposed between two parallel-connected cell strings 111 every a predetermined number of cell slices 1111.
The utility model discloses an among the concrete implementation manner, every preset number of battery slices 1111 sets up interconnection strip 112 between two battery strings 111, when certain battery slice 1111 in battery unit 11 receives and shelters from, and when diode 12 did not reach the state of forward conduction, this battery unit 11 of the electric current accessible interconnection strip 112 outflow of the battery slice 1111 that does not receive and shelter from in this battery unit 11, the voltage and the electric current that make the battery slice 1111 that receives and shelter from reduce, the speed that should receive the battery slice 1111 temperature that shelters from risees has been reduced, the degree that should receive the battery slice 1111 that shelters from and damage has been slowed down, the power of the battery slice 1111 that does not receive and shelter from in this battery unit 11 has effectively been utilized simultaneously. The cell slice 1111 receives sunlight through its light-receiving surface, and the back surface does not receive sunlight, and the interconnection strips 112 may be provided on the back surface of the cell slice 1111.
Optionally, referring to fig. 1, as a specific implementation of the solar cell module provided by the present invention, the solar cell module further includes a bus bar 2; the plurality of battery packs 1 are connected in series by the bus bar 2, and two battery cells 11 included in each of the plurality of battery packs 1 are disposed on both sides of the bus bar 2.
In the embodiment of the present invention, two battery units 11 are respectively disposed on both sides of the bus bar 2, the current in each battery pack 1 is output through the bus bar 2, and the current in each battery pack 1 is not affected. The whole solar cell module is compact and standard in structure. The output of the current of each battery pack 1 is facilitated.
Optionally, referring to fig. 1, as a specific embodiment of the solar cell module provided by the present invention, the unidirectional conducting device 12 included in each of the plurality of battery packs 1 is disposed on the bus bar 2;
the solar cell module further includes: a plurality of junction boxes;
every two adjacent unidirectional conducting devices 12 on the bus bar 2 are arranged in one of the junction boxes.
The utility model discloses an among the concrete implementation, one-way conduction device 12 can be the diode, and every two adjacent diodes 12 set up in same terminal box, and the diode figure in the terminal box reduces, has reduced the operating temperature of terminal box, easily realizes dispelling the heat to every diode 12, and then has reduced the temperature of every diode 12 to, the structure of many terminal boxes, in-service use, do benefit to the connection between the solar module.
Optionally, referring to fig. 1, as a specific implementation of the solar cell module provided by the present invention, the number of the plurality of battery packs 1 is 6, and the number of the battery slices 1111 included in the battery string 111 is 12.
In a specific embodiment of the present invention, the solar cell module includes 6 cell sets 1, and correspondingly, the solar cell module includes 3 junction boxes;
the solar cell module comprises 6 cell groups 1, each cell group 1 comprises a diode 12 and two cells 11, each cell 12 comprises two parallel cell strings 111, each cell string 111 comprises 12 cell slices 1111 connected in series, the cell slices 1111 are 1/4 of the cell slices, an interconnection bar 112 is arranged between the two cell strings through 4 cell slices, and two adjacent diodes 12 are arranged in the same junction box.
The utility model discloses a solar module of 72 battery pieces, the utility model discloses 6 1 series connection of group battery, two battery unit 12 parallel connection in every group battery 1, just, two battery cluster 111 parallel connection in every battery unit 12 realize the same with 72 battery piece series connection's among the prior art solar module's power sum. In practical use, the solar cell module is easy to match with a power transmission device, the problem of replacement of the power transmission device is avoided, and the problem of overhigh voltage of the solar cell module caused by the series connection of 72 cells is avoided.
The utility model discloses reduced the power loss that hot spot effect caused to monoblock solar module; the size of the whole solar cell module is reduced, the effective area of the whole solar cell module for utilizing solar energy is increased, the utilization efficiency of the solar energy is increased, and meanwhile, the hidden cracking risk among solar cell slices is reduced; the resistance loss power of the battery slices of the whole solar battery assembly is reduced, the total power of the solar battery assemblies connected in series with the same number of battery slices is the same, and the output power of the solar battery assembly is improved. And simultaneously, the heat dissipation of each diode is facilitated, and the connection of the solar cell module is facilitated.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. A solar cell module, comprising:
a plurality of battery packs connected in series in sequence;
each battery pack of the plurality of battery packs comprises at least one unidirectional conducting device and two battery units;
the positive electrode of each of the two battery units is connected with the cathode of the unidirectional conducting device, and the negative electrode of each of the two battery units is connected with the anode of the unidirectional conducting device.
2. The solar cell assembly of claim 1 wherein each of the two cells comprises two strings of cells connected in parallel.
3. The solar cell assembly of claim 2 wherein the string of cells comprises a plurality of cell slices connected in series.
4. The solar cell module as claimed in claim 3, wherein the cell cut is 1/4 or 1/6 cut by laser scribing the cell piece.
5. The solar cell module as claimed in claim 3, wherein the adjacent two cell slices in the cell string are welded by ultra-thin solder ribbon technology.
6. The solar cell module as claimed in claim 3, wherein an interconnection bar is provided between the two parallel-connected cell strings every predetermined number of cell slices.
7. The solar cell module according to any one of claims 1 to 6, further comprising a bus bar;
the plurality of battery packs are connected in series by the bus bar, and two battery cells included in each of the plurality of battery packs are disposed at both sides of the bus bar.
8. The solar cell module as claimed in claim 7, wherein the unidirectional conducting device included in each of the plurality of cell groups is disposed on the bus bar;
the solar cell module further includes: a plurality of junction boxes;
every two adjacent unidirectional conducting devices on the bus bar are arranged in one junction box.
9. The solar cell module as claimed in claim 1, wherein the number of the plurality of cell groups is 6.
10. The solar cell module as claimed in any one of claims 3 to 6, wherein the cell string comprises 12 cell slices.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921447012.3U CN210516737U (en) | 2019-09-02 | 2019-09-02 | Solar cell module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921447012.3U CN210516737U (en) | 2019-09-02 | 2019-09-02 | Solar cell module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210516737U true CN210516737U (en) | 2020-05-12 |
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ID=70544558
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921447012.3U Active CN210516737U (en) | 2019-09-02 | 2019-09-02 | Solar cell module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210516737U (en) |
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2019
- 2019-09-02 CN CN201921447012.3U patent/CN210516737U/en active Active
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