CN208352314U - A kind of photovoltaic cell string and photovoltaic module - Google Patents
A kind of photovoltaic cell string and photovoltaic module Download PDFInfo
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- CN208352314U CN208352314U CN201821097638.1U CN201821097638U CN208352314U CN 208352314 U CN208352314 U CN 208352314U CN 201821097638 U CN201821097638 U CN 201821097638U CN 208352314 U CN208352314 U CN 208352314U
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- battery
- photovoltaic
- photovoltaic cell
- small pieces
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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 discloses a kind of photovoltaic cell string and photovoltaic modulies, wherein the photovoltaic cell string includes multiple photovoltaic battery modules being sequentially connected in series, each photovoltaic battery module includes N number of battery unit being connected in parallel, N is the integer greater than 1: wherein, battery unit is that complete photovoltaic cell is cut into any battery small pieces in M battery small pieces, and M is the integer greater than 1.Above-mentioned technical proposal disclosed in the present application, complete photovoltaic cell is cut into M battery small pieces, using battery small pieces as battery unit, and N number of battery unit is in parallel to obtain photovoltaic battery module, and photovoltaic battery module is connected in series to obtain photovoltaic cell string, since the resistance of each battery unit is respectively less than the resistance of complete photovoltaic cell, along with the parallel connection between battery unit, the resistance of photovoltaic battery module can then be further decreased, to reduce power consumed by resistance, to improve the output power of photovoltaic module.
Description
Technical field
The utility model relates to solar-photovoltaic technology fields, more specifically to a kind of photovoltaic cell string and photovoltaic
Component.
Background technique
With the continuous development of photovoltaic cell technology, the electric current that photovoltaic cell can be generated also is increased with it.
Since single photovoltaic cell is unable to satisfy power generation needs, then need multiple complete by what is prepared using welding
Photovoltaic cell is cascaded to form photovoltaic cell string, specifically may refer to Fig. 1, and it illustrates showing for existing photovoltaic cell string
It is intended to.But the resistance as present in each photovoltaic cell itself is bigger, then power consumed by self-resistance will
Resistance present in bigger namely each photovoltaic cell itself will cause bigger power loss, correspondingly, will drop
The output power of low each photovoltaic cell, so that the output power of the subsequent photovoltaic module prepared can be reduced.
In conclusion resistance present in photovoltaic cell itself how is reduced, to reduce the power because of caused by resistance,
It is current those skilled in the art technical problem urgently to be resolved.
Utility model content
In view of this, the purpose of the utility model is to provide a kind of photovoltaic cell string and photovoltaic module, to reduce photovoltaic electric
Resistance present in pond piece itself, thus the power loss caused by reducing because of photovoltaic cell self-resistance.
To achieve the goals above, the utility model provides the following technical solutions:
A kind of photovoltaic cell string, including multiple photovoltaic battery modules being sequentially connected in series, each photovoltaic cell mould
Block includes N number of battery unit being connected in parallel, and N is the integer greater than 1:
Wherein, the battery unit is that any battery that complete photovoltaic cell is cut into M battery small pieces is small
Piece, M are the integer greater than 1.
Preferably, positioned at the positive main gate line of the battery unit and the rear electrode mistake for being located at the battery unit back side
Open distribution.
Preferably, the battery unit is that complete photovoltaic cell is cut into the resulting battery small pieces of M equal portions
Any battery small pieces.
Preferably, the N number of battery unit for including in the photovoltaic battery module is equal are as follows:
Complete photovoltaic cell is cut into the upper half battery small pieces in the resulting battery small pieces of 2 equal portions, or under
Half battery small pieces.
Preferably, the battery unit is double-side photic cell piece.
A kind of photovoltaic module, successively include: from upper surface to lower surface face glass, front EVA, it is multiple be connected in series and/
Or photovoltaic cell string as described in any one of the above embodiments, the back side EVA, backboard of parallel connection.
Preferably, the backboard is glass.
The utility model provides a kind of photovoltaic cell string and photovoltaic module, wherein the photovoltaic cell string include it is multiple successively
The photovoltaic battery module of series connection, each photovoltaic battery module include N number of battery unit being connected in parallel, and N is whole greater than 1
Number: where battery unit is that complete photovoltaic cell is cut into any battery small pieces in M battery small pieces, M for greater than
1 integer.
Above-mentioned technical proposal disclosed in the present application, photovoltaic cell string are made of multiple photovoltaic battery modules being sequentially connected in series
, each photovoltaic battery module includes N (N is greater than 1 integer) a battery unit being connected in parallel, due to each battery unit
It is any battery small pieces being cut into complete photovoltaic cell in M (M is greater than 1 integer) a battery small pieces, therefore,
The resistance of each battery unit itself is less than the resistance of complete photovoltaic cell itself, and battery unit parallel with one another
The equivalent resistance of photovoltaic battery module can be further decreased, so as to reduce caused by each photovoltaic battery module self-resistance
Power loss, to improve the output power of photovoltaic module.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is the embodiments of the present invention, for those of ordinary skill in the art, without creative efforts, also
Other attached drawings can be obtained according to the attached drawing of offer.
Fig. 1 is the schematic diagram of existing photovoltaic cell string；
Fig. 2 is a kind of schematic diagram of photovoltaic cell string provided by the embodiment of the utility model；
Fig. 3 is the signal of the complete photovoltaic cell provided by the embodiment of the utility model for being used to prepare battery unit
Figure；
Fig. 4 is the connection schematic diagram of upper half battery small pieces provided by the embodiment of the utility model；
Fig. 5 is the front schematic view of upper half battery small pieces connection provided by the embodiment of the utility model；
Fig. 6 is the connection schematic diagram of lower half battery small pieces provided by the embodiment of the utility model；
Fig. 7 is the front schematic view of lower half battery small pieces connection provided by the embodiment of the utility model；
Fig. 8 is a kind of structural schematic diagram of photovoltaic module provided by the embodiment of the utility model；
The first specific embodiment that Fig. 9 is electrically connected between photovoltaic cell string provided by the embodiment of the utility model
Schematic diagram；
The second specific implementation that Figure 10 is electrically connected between photovoltaic cell string provided by the embodiment of the utility model
The schematic diagram of example.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
Fig. 2 is referred to, it illustrates a kind of schematic diagrames of photovoltaic cell string provided by the embodiment of the utility model, can wrap
Multiple photovoltaic battery modules 1 being sequentially connected in series are included, each photovoltaic battery module 1 may include N number of battery being connected in parallel
Unit 11, N are the integer greater than 1:
Wherein, battery unit 11 is that complete photovoltaic cell is cut into any battery small pieces in M battery small pieces,
M is the integer greater than 1.
After preparing complete photovoltaic cell using existing photovoltaic cell technology of preparing, then it can use sharp
Prepared complete photovoltaic cell is cut into M (M is the integer greater than 1) part by the cutting techniques such as light, to obtain M electricity
The resistance of pond small pieces, each battery small pieces is respectively less than the resistance of complete photovoltaic cell.Wherein, mentioned complete here
Photovoltaic cell can be polycrystalline photovoltaic cell, or single crystal photovoltaic cell piece, and it is located at complete photovoltaic cell
The positive main gate line of piece can be anode, or cathode, it is corresponding, then and it is located at the back at the complete photovoltaic cell back side
Face electrode then can be cathode, or anode, the utility model is at this to the type of complete photovoltaic cell, Yi Jizheng
Any restriction is not done in the distribution of cathode.
After obtaining battery small pieces, then it can use battery small pieces as battery unit 11, and (N is greater than 1 by N
Integer) a battery unit 11 is together in parallel, namely the main gate line of N number of battery unit 11 is connected in turn using welding 2, and
The rear electrode of this N number of battery unit 11 is connected in turn using welding 2, to obtain a photovoltaic battery module 1.Wherein, M
The number of battery unit 11 in parallel in the restriction namely each photovoltaic battery module 1 of size and complete is had no between N
Between the number that photovoltaic cell is cut and it is not limited.
Since parallel resistance is less than wherein any one sub-resistance, then N number of battery unit 11 being connected in parallel can be further
The resistance of obtained photovoltaic battery module 1 is reduced, therefore, then can reduce each 1 self-resistance of photovoltaic battery module consumption
Power.And since the light-receiving area of each battery unit 11 is respectively less than the light-receiving area of complete photovoltaic cell, then may be used
To reduce the electric current that each battery unit 11 can be output, correspondingly, so that it may reduce and carry out in parallel connect between battery unit 11
Power loss caused by itself resistance of welding 2 used in connecing.
It should be noted that, although the electric current that each battery unit 11 is exported is respectively less than complete photovoltaic cell institute energy
The electric current of output, but the current value that photovoltaic battery module 1 can be output can be output for each battery unit 11 for being included
The sum of current value, i.e., by battery unit 11 be connected in parallel can't the output electric current to photovoltaic battery module 1 impact, and
The output voltage of photovoltaic battery module 1 will not be impacted, so that photovoltaic battery module 1 has preferable performance.
After obtaining photovoltaic battery module 1, the last one battery unit that will include in previous photovoltaic battery module 1
The main gate line for first battery unit 11 for including in 11 rear electrode and the latter photovoltaic battery module 1 is connected using welding 2
It picks up and, i.e., photovoltaic battery module 1 is together in series, to obtain photovoltaic cell string.
Above-mentioned technical proposal disclosed in the present application, photovoltaic cell string are made of multiple photovoltaic battery modules being sequentially connected in series
, each photovoltaic battery module includes N (N is greater than 1 integer) a battery unit being connected in parallel, due to each battery unit
It is any battery small pieces being cut into complete photovoltaic cell in M (M is greater than 1 integer) a battery small pieces, therefore,
The resistance of each battery unit itself is less than the resistance of complete photovoltaic cell itself, and battery unit parallel with one another
The equivalent resistance of photovoltaic battery module can be further decreased, so as to reduce caused by each photovoltaic battery module self-resistance
Power loss reduce the cost of electricity-generating of photovoltaic module to improve the output power of photovoltaic module, improve the product of photovoltaic module
Competitiveness.
Fig. 3 is referred to, it illustrates the complete photovoltaics provided by the embodiment of the utility model for being used to prepare battery unit
The schematic diagram of cell piece.A kind of photovoltaic cell string provided by the embodiment of the utility model is located at the positive main grid of battery unit 11
Line 3 is in staggered distribution with the rear electrode 4 for being located at battery unit 11.
When N number of battery unit 11 is connected in parallel using welding 2, it is contemplated that welding 2 itself is included when welding
Tin layers can be flowed because of fusing, in order to avoid the welding 2 of connection main gate line 3 with connect the welding 2 of rear electrode 4 because sending out
Life contacts and causes the short circuit between battery unit 11, then can will be used to prepare the complete photovoltaic cell of battery unit 11
Main gate line 3 be in staggered distribution with rear electrode 4.
That is, when preparing the surface electrode of complete photovoltaic cell in the way of silk-screen printing etc., Ke Yichong
New design electrode halftone, to make way for the positive main gate line 3 of complete photovoltaic cell and be located at the rear electrode 4 at the back side in sky
Between on be not overlapped, to can make to be located at battery unit when cutting complete photovoltaic cell to obtain battery unit 11
11 positive main gate lines 3 are in staggered distribution with the rear electrode 4 for being located at 11 back side of battery unit, can will thus connect main gate line
3 welding 2 and the welding 2 for connecting rear electrode 4 are staggered a certain distance, so that the contact both avoided, short to avoid occurring
Road.
Since the main gate line 3 of battery unit 11 is in staggered distribution with rear electrode 4, then the company of welding 2 is being carried out using string welding machine
When connecing, then need to keep welding guide groove traversing according to the progress of the position of main gate line 3 and rear electrode 4, it is fixed to meet welding 2
Position, consequently facilitating the series connection between being connected in parallel between battery unit 11 and photovoltaic battery module 1.
It is of course also possible between the welding 2 and the welding 2 of connection rear electrode 4 of connection main gate line 3 and be located in parallel
At interstitial site between battery unit 11 be arranged insulating layer, with prevent because connection main gate line 3 welding 2 with connect rear electrode
4 welding 2 makes that short circuit occurs between battery unit 11 because being in contact.
It should be noted that main gate line 3 and rear electrode 4 are in staggered distribution for ease of description, then in Fig. 3 with can be from
The front of complete photovoltaic cell is seen to be illustrated for the rear electrode 4 at the back side, and subsequent attached drawing is similar with this
Seemingly, then subsequent no longer to explain.
A kind of photovoltaic cell string provided by the embodiment of the utility model, battery unit 11 are to cut complete photovoltaic cell
Any battery small pieces being cut into the resulting battery small pieces of M equal portions.
When complete photovoltaic cell is cut into M battery small pieces, for the convenience of cutting, and for the ease of battery
Being connected in parallel between unit 11, and for the ease of preparing photovoltaic battery module 1, then equal equal portions cutting can be carried out to it, with
The identical M battery small pieces of size are obtained, these battery small pieces can be used as battery unit 11 to prepare photovoltaic battery module
1。
It is of course also possible to according to output power of photovoltaic module and the needs of photovoltaic module actual size and to complete photovoltaic
Cell piece carries out unequal part cutting.
Fig. 4 is referred to Fig. 7, wherein Fig. 4 shows the company of upper half battery small pieces provided by the embodiment of the utility model
Schematic diagram is connect, Fig. 5 shows the front schematic view of upper half battery small pieces connection provided by the embodiment of the utility model, and Fig. 6 shows
The connection schematic diagram of lower half battery small pieces provided by the embodiment of the utility model is gone out, Fig. 7 shows the utility model implementation
The front schematic view for the lower half battery small pieces connection that example provides.A kind of photovoltaic cell string provided by the embodiment of the utility model,
The N number of battery unit 11 for including in photovoltaic battery module 1 can be equal are as follows:
Complete photovoltaic cell is cut into the upper half battery small pieces 111 in the resulting battery small pieces of 2 equal portions, or
Lower half battery small pieces 112.
When complete photovoltaic cell is cut into 2 equal portions, due to by upper half battery small pieces 111 rotate 180 ° it
Afterwards, not with lower half battery small pieces 112 symmetrical (distribution of main gate line 3 and rear electrode 4 is not identical), then for the ease of electricity
Being connected in series between being in parallel between pool unit 11 and photovoltaic battery module 1, then can be by upper half battery small pieces 111
It is used separately with lower half battery small pieces 112, to prepare photovoltaic battery module 1 respectively and prepare corresponding photovoltaic cell respectively
String.
During preparing photovoltaic cell string using identical battery unit 11, namely by upper half battery small pieces
During 111 are used separately with lower half battery small pieces 112 to prepare photovoltaic cell string, in preparation and first photovoltaic cell
When second photovoltaic battery module 1 that module 1 is connected in series, the battery unit 11 in second photovoltaic battery module 1 needs relatively
Battery unit 11 in first photovoltaic battery module 1 rotates 180 °, so that welding electrode (namely the main grid of battery unit 11
Line 3 and rear electrode 4) it can be contacted with corresponding welding 2 and complete being connected in series between photovoltaic battery module 1.
It should be noted that carrying out connection and lower half battery small pieces 112 between upper half battery small pieces 111 respectively
Between connection when, cutting edge can be placed on to the initial position of each photovoltaic battery module 1, non-cutting edge can also be put
It sets in initial position, the utility model does not do any restriction to this.
A kind of photovoltaic cell string provided by the embodiment of the utility model, battery unit 11 can be double-side photic cell piece.
Battery unit 11 included in photovoltaic cell string can be double-side photic cell piece, to reduce double-side photic battery
Power loss caused by the resistance of piece itself improves double glass to improve the output power of the subsequent solar double-glass assemblies prepared
The product competitiveness of component.
The utility model embodiment additionally provides a kind of photovoltaic module, specifically may refer to Fig. 8, and it is practical new that it illustrates this
A kind of structural schematic diagram for photovoltaic module that type embodiment provides, successively may include: face glass from upper surface to lower surface
5, front EVA6, multiple be connected in series and/or in parallel such as above-mentioned any photovoltaic cell string 7, back side EVA8, backboard 9.
Above-mentioned mentioned any photovoltaic cell string 7 is applied in photovoltaic module, and is carried out between photovoltaic cell string 7
Be electrically connected, namely carry out photovoltaic cell string 7 between series, parallel, or series connection and combination in parallel.
It specifically may refer to Fig. 9 and Figure 10, wherein Fig. 9 shows photovoltaic cell string provided by the embodiment of the utility model
Between the schematic diagram of the first specific embodiment that is electrically connected, Figure 10 shows photovoltaic provided by the embodiment of the utility model
The schematic diagram for the second specific embodiment being electrically connected between battery strings.Specifically, what is represented in Fig. 9 and Figure 10 is to incite somebody to action
Complete photovoltaic cell is cut into two half battery small pieces, and respectively as battery unit 11, and each photovoltaic cell mould
It include two battery units 11 in parallel in block 1, Fig. 9 shows the series connection between photovoltaic cell string 7, and wherein
Bypass diode 10 is added, Figure 10 shows and first connects between photovoltaic cell string 7, rear connection type in parallel, and wherein
It joined bypass diode 10.Wherein, the effect of bypass diode 10 is: when hot spot effect occurs in some photovoltaic battery module 1
When cannot generate electricity, play the role of bypass, electric current caused by other photovoltaic battery modules 1 allowed to flow out from bypass diode 10,
Photovoltaic module is set to continue to generate electricity, to make photovoltaic module that can't go wrong because of a certain photovoltaic battery module 1 and generate hair
The obstructed situation of circuit.
After being electrically connected photovoltaic cell string 7, then photovoltaic module can be prepared.Specifically, i.e., by front glass
Glass 5, carries out electricity company at front EVA6 (Ethylene-vinyl acetate copolymer, ethylene-vinyl acetate copolymer)
Photovoltaic cell string 7, back side EVA8, the backboard 9 connect is stacked gradually together, and is laminated, full to obtain performance or size
The photovoltaic module of sufficient design requirement.Then, then solidified, rim frame and terminal box, to complete the encapsulation of photovoltaic module.
Above-mentioned photovoltaic cell string 7 is applied in photovoltaic module, then can reduce the electricity of each photovoltaic battery module 1 itself
Resistance, and power consumed by the resistance of photovoltaic battery module 1 itself and the resistance of welding can be reduced, to improve photovoltaic module
Output power, and improve the performance of photovoltaic module and the product competitiveness of photovoltaic module.
A kind of photovoltaic module provided by the embodiment of the utility model, backboard 9 can be glass.
Above-mentioned mentioned backboard 9 is specifically as follows glass, and battery unit 11 included in photovoltaic cell string 7 can be
Double-side photic cell piece namely the photovoltaic module are solar double-glass assemblies, to improve the utilization rate to light, improve photovoltaic module
Generated energy and output power.
It should be noted that, in this document, relational terms such as first and second and the like are used merely to a reality
Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation
In any actual relationship or order or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to
Non-exclusive inclusion, so that the element that the process, method, article or equipment including a series of elements is intrinsic.?
Do not have in the case where more limiting, the element limited by sentence "including a ...", it is not excluded that including the element
There is also other identical elements in process, method, article or equipment.In addition, provided by the embodiment of the utility model above-mentioned
In technical solution with correspond to the consistent part of technical solution realization principle and unspecified in the prior art, in order to avoid excessive superfluous
It states.
The foregoing description of the disclosed embodiments makes those skilled in the art can be realized or use the utility model.
Various modifications to these embodiments will be apparent for a person skilled in the art, general original as defined herein
Reason can be realized in other embodiments without departing from the spirit or scope of the present utility model.Therefore, this is practical new
Type is not intended to be limited to the embodiments shown herein, and is to fit to and the principles and novel features disclosed herein phase
Consistent widest scope.
Claims (7)
1. a kind of photovoltaic cell string, which is characterized in that including multiple photovoltaic battery modules being sequentially connected in series, each light
Volt battery module includes N number of battery unit being connected in parallel, and N is the integer greater than 1:
Wherein, the battery unit is that complete photovoltaic cell is cut into any battery small pieces in M battery small pieces, M
For the integer greater than 1.
2. photovoltaic cell string according to claim 1, which is characterized in that be located at the positive main gate line of the battery unit with
Rear electrode positioned at the battery unit back side is in staggered distribution.
3. photovoltaic cell string according to claim 2, which is characterized in that the battery unit is by complete photovoltaic cell
Piece is cut into any battery small pieces in the resulting battery small pieces of M equal portions.
4. photovoltaic cell string according to claim 3, which is characterized in that the N number of electricity for including in the photovoltaic battery module
Pool unit is equal are as follows:
Upper half battery small pieces or the lower half complete photovoltaic cell being cut into the resulting battery small pieces of 2 equal portions
Battery small pieces.
5. photovoltaic cell string according to any one of claims 1 to 4, which is characterized in that the battery unit be it is two-sided by
Photocell piece.
6. a kind of photovoltaic module, which is characterized in that successively include: face glass from upper surface to lower surface, front EVA, multiple
It is connected in series and/or in parallel such as photovoltaic cell string described in any one of claim 1 to 5, back side EVA, backboard.
7. photovoltaic module according to claim 6, which is characterized in that the backboard is glass.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201821097638.1U CN208352314U (en) | 2018-07-11 | 2018-07-11 | A kind of photovoltaic cell string and photovoltaic module |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821097638.1U CN208352314U (en) | 2018-07-11 | 2018-07-11 | A kind of photovoltaic cell string and photovoltaic module |
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| CN208352314U true CN208352314U (en) | 2019-01-08 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108649090A (en) * | 2018-07-11 | 2018-10-12 | 浙江晶科能源有限公司 | A kind of photovoltaic cell string and preparation method thereof, photovoltaic module |
| CN110047964A (en) * | 2019-04-19 | 2019-07-23 | 泰州隆基乐叶光伏科技有限公司 | Photovoltaic module circuit unit, photovoltaic module circuit and photovoltaic module |
| CN110212056A (en) * | 2019-05-30 | 2019-09-06 | 晶澳（扬州）太阳能科技有限公司 | It is sliced the preparation method of solar battery sheet |
-
2018
- 2018-07-11 CN CN201821097638.1U patent/CN208352314U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108649090A (en) * | 2018-07-11 | 2018-10-12 | 浙江晶科能源有限公司 | A kind of photovoltaic cell string and preparation method thereof, photovoltaic module |
| CN110047964A (en) * | 2019-04-19 | 2019-07-23 | 泰州隆基乐叶光伏科技有限公司 | Photovoltaic module circuit unit, photovoltaic module circuit and photovoltaic module |
| CN110212056A (en) * | 2019-05-30 | 2019-09-06 | 晶澳（扬州）太阳能科技有限公司 | It is sliced the preparation method of solar battery sheet |
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