CN209641664U - Photovoltaic cell and photovoltaic module - Google Patents
Photovoltaic cell and photovoltaic module Download PDFInfo
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- CN209641664U CN209641664U CN201920428483.3U CN201920428483U CN209641664U CN 209641664 U CN209641664 U CN 209641664U CN 201920428483 U CN201920428483 U CN 201920428483U CN 209641664 U CN209641664 U CN 209641664U
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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
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Abstract
This application involves a kind of photovoltaic cell and photovoltaic modulies.Photovoltaic cell includes front main grid line, front electrode contact, cell piece ontology and rear electrode contact.The extending direction of front main grid line is set as first direction.The avris of cell piece ontology in a first direction is equipped with through hole.Front electrode contact is located at the front of cell piece ontology, including front perforating electrode contact.Rear electrode contact is located at the back side of cell piece ontology, and the perforating of the back side including mutually insulated electrode contact is contacted with back electrode.The back side perforates the avris of electrode contact setting in a first direction, and the contact of back side perforating electrode is covered each by the both ends of through hole with front perforating electrode and is electrically connected to each other.Therefore, the photovoltaic module formed by the application photovoltaic cell, can be effectively reduced welding difficulty, prevent from causing to damage to photovoltaic cell in welding process.
Description
Technical field
This application involves photovoltaic technology field, more particularly to a kind of photovoltaic cell and photovoltaic module.
Background technique
Solar energy has many-sided advantage such as inexhaustible, nexhaustible and clean and environmental protection as a kind of green novel energy source.
A kind of current main Solar use mode is to receive luminous energy by photovoltaic module to be converted into electric energy.Photovoltaic module usually wraps
Include several photovoltaic cells.Photovoltaic cell absorbs luminous energy, generates photovoltaic effect.Under the action of photovoltaic effect,
Photovoltaic cell both ends generate electromotive force, to convert light energy into electric energy.
Traditional photovoltaic module, first with welding by adjacent photovoltaic cell piece series welding.Welding and a piece of photovoltaic cell are just
Electrode contact in face is contacted with the rear electrode of another photovoltaic cell to be respectively welded, and then the two series connection, typesetting are shaped to
Photovoltaic module.
However, adjacent photovoltaic cell piece front and back side cross weld, welding difficulty is high, and is easy when welding to photovoltaic electric
Pond piece causes damage (such as crack or fragment).
Utility model content
Based on this, it is necessary in view of the above technical problems, provide a kind of photovoltaic cell that can reduce welding difficulty with
And photovoltaic module.
A kind of photovoltaic cell, comprising:
Front main grid line, including the first main gate line and the second main gate line being electrically connected to each other；Set the front main grid line
Extending direction be first direction, first main gate line successively arranges with second main gate line along the first direction, and
Second main gate line is set to an avris；
Front electrode contact, connects the front main grid line；The front electrode contact includes front perforating electrode contact,
The front perforating electrode connects second main gate line；
Cell piece ontology has the front and the back side being disposed opposite to each other, and is equipped with and runs through in an avris of the first direction
Hole；The front main grid line and front electrode contact are located at the front of the cell piece ontology；
The rear electrode contact, positioned at the back side of the cell piece ontology, the back side including mutually insulated perforates electrode
Contact is contacted with back electrode, and an avris of the first direction is arranged in the back side perforating electrode contact, and the back side is worn
Conductive electrode contact is covered each by the both ends of the through hole with the front perforating electrode and is electrically connected to each other.
The back electrode contact contacts with back side perforating electrode and is aligned setting in one of the embodiments,.
The back side perforating electrode contact contacts one-to-one correspondence with the front perforating electrode in one of the embodiments,
Setting, and a pair of back side perforating electrode contact contacts with the front perforating electrode and is respectively overlay in the through hole
Both ends and be electrically connected to each other.
The direction vertical with the first direction is second direction in one of the embodiments, the back side perforating electricity
The quantity of pole contact be it is multiple, multiple back sides perforating electrodes contacts form N column in a second direction, and N is just whole greater than 1
Number.
It is arranged in the back side perforating electrode contact in the N in one of the embodiments, each column includes at least two institutes
State back side perforating electrode contact.
The photovoltaic cell further includes the perforating electrode master extended along the first direction in one of the embodiments,
Grid line, the perforating electrode main grid line are located at the back side of the cell piece ontology, and connect adjacent back side perforating electrode
Contact.
The rear electrode contact further includes intensifier electrode contact in one of the embodiments, and the intensifier electrode connects
Touching contacts with back side perforating electrode and is aligned setting in a first direction.
In one of the embodiments,
The front electrode contact further includes multiple positive electrode contacts and multiple front perforating electrode contacts；It is multiple
The positive electrode contact and multiple front perforating electrode contacts form N column in a second direction, and N is just whole greater than 1
Number；
In N column positive electrode contact, each column includes that the M positive electrode contacts and at least one described front are worn
Conductive electrode contact, adjacent positive electrode contact are connected by first main gate line, adjacent positive electrode contact and
The front perforating electrode contact is connected by the second main gate line, and M is the positive integer greater than 1；
The photovoltaic cell further includes face bonding band, each positive electrode contact and front perforating electricity in same row
Pole contact and the same face bonding welding.
The photovoltaic cell further includes positioned at the positive multiple of the cell piece ontology in one of the embodiments,
Thin grid line and multiple anti-breaking grid, the thin grid line is vertical with the front main grid line, and connects the front main grid line, described
Anti-breaking grid connect the adjacent thin grid line.
A kind of photovoltaic module, including at least two panels photovoltaic cell described in any of the above embodiments and each photovoltaic cell of series connection
The back side welding of piece, the back side of the cell piece ontology of the photovoltaic cell described in adjacent two panels, the back side welding weldering connect
The wherein back side perforating electrode contact of a piece of photovoltaic cell, while the institute of another photovoltaic cell of series welding
State back electrode contact.
An avris in cell piece ontology is provided with through hole, so that the electricity that the front of cell piece ontology is collected
Stream (usually cathodal current) can be guided by through hole to the back side for making cell piece ontology.Also, cell piece ontology
The back side is additionally provided with the back side perforating electrode contact of covering through hole while being provided with back electrode contact.Therefore, by this Shen
Please the photovoltaic module that is formed of photovoltaic cell, can be by the way that the contact of the back electrodes of different photovoltaic cells be perforated electrode with the back side
Contact weld is realized at the same face (back side) and is connected to same back side welding, and then welding difficulty is effectively reduced, and prevents from welding
In the process photovoltaic cell is caused to damage.
Detailed description of the invention
Fig. 1 is the photovoltaic module partial schematic diagram including half type photovoltaic cell in one embodiment；
Fig. 2 is the photovoltaic module partial schematic diagram including full wafer type photovoltaic cell in one embodiment；
Fig. 3 is the front schematic view of the half type photovoltaic cell in one embodiment；
Fig. 4 is the schematic rear view of the half type photovoltaic cell in one embodiment；
Fig. 5 is the photovoltaic cell structural schematic diagram in one embodiment；
Fig. 6 is the back side partial schematic diagram of the photovoltaic module including half type photovoltaic cell in one embodiment；
Fig. 7 is the front schematic view of the full wafer type photovoltaic cell in one embodiment；
Fig. 8 is the schematic rear view of the full wafer type photovoltaic cell in one embodiment；
Fig. 9 is the back side partial schematic diagram of the photovoltaic module including full wafer type photovoltaic cell in one embodiment；
Figure 10 is five in one embodiment/a piece of type photovoltaic cell front schematic view；
Figure 11 is five in one embodiment/a piece of type photovoltaic cell schematic rear view；
Figure 12 be in one embodiment include that the back side of photovoltaic module of five/a piece of type photovoltaic cell locally shows
It is intended to；
Figure 13 is the front schematic view of the half type photovoltaic cell in another embodiment；
Figure 14 is the schematic rear view of the photovoltaic module including full wafer type photovoltaic cell in one embodiment；
Figure 15 is the schematic rear view of the photovoltaic module including half type photovoltaic cell in one embodiment；
Figure 16 be in one embodiment include five/a piece of type photovoltaic cell photovoltaic module schematic rear view.
Specific embodiment
It is with reference to the accompanying drawings and embodiments, right in order to which the objects, technical solutions and advantages of the application are more clearly understood
The application is further elaborated.It should be appreciated that specific embodiment described herein is only used to explain the application, not
For limiting the application.
With reference to Fig. 1 and Fig. 2, this application provides a kind of photovoltaic modulies, including at least two panels photovoltaic cell 100.Respectively
Photovoltaic cell 100 is welded by back side welding 200.
In one embodiment, with reference to Fig. 3 and Fig. 4, photovoltaic cell 100 includes cell piece ontology 110, front main grid
Line 120, front electrode contact 130 and rear electrode contact 140.
With reference to Fig. 5, cell piece ontology 110 can specifically include cell matrix 111 and emitter layer 112, cell matrix
111 and emitter layer 112 formed PN junction.Solar irradiation forms new electron-hole pair on semiconductor PN.In PN junction
Under the action of built in field, photohole flows to the area P, and light induced electron flows to the area N, just generates electric current after connecting circuit.
With reference to Fig. 3 to Fig. 5, cell piece ontology 110 has the positive 110a and back side 110b being disposed opposite to each other.Front is main
Grid line 120 and front electrode contact 130 are located at the positive 110a of cell piece ontology 110.Rear electrode contact 140 is located at battery
The back side 110b of piece ontology 110.The extending direction of front main grid line 120 is set as first direction.Cell piece ontology 110 is first
An avris on direction is equipped with through hole 110c.
With reference to Fig. 3, front main grid line 120 be used to collect the first kind on emitter layer 112 photo-generated carrier (such as
Electronics), and form electric current.Meanwhile front main grid line 120 includes the first main gate line 121 and the second main gate line being electrically connected to each other
122.First main gate line 121 is successively arranged with the second main gate line 122 along first direction.Also, the second main gate line 122 is set to one
Avris.
130 connection front main grid line 120 of front electrode contact, and then the photoproduction that can will be collected in front main grid line 120
The electric current export that carrier is formed.Front electrode contact 130 can with front main grid line 120 in same screen printing process shape
At.Front electrode contact 130 includes front perforating electrode contact 131.131 the second main gate line of connection of front perforating electrode contact
122, i.e. front perforating electrode contacts 131 avris for being also disposed on photovoltaic cell 100.
With reference to Fig. 4 and Fig. 5, rear electrode contact 140 includes that back side perforating electrode contact 141 contacts 142 with back electrode.
Wherein, back side perforating electrode contact 142 is also disposed at an avris of first direction.Back side perforating electrode contact 141 is worn with front
Conductive electrode 131 is respectively overlay in the both ends of through hole 110c and is electrically connected to each other.
Conductive column can be formed and silver paste is perfused in through hole 110c, and then back side perforating electrode is contacted 141
It is electrically connected with front perforating electrode 131, thus by the photoproduction current-carrying of the positive 110a of cell piece ontology 110 first kind collected
The electric current that son is formed leads to the back side 110b of cell piece ontology 110.The back side perforates electrode contact 141 as photovoltaic cell 100
First pole (such as cathode).
Back electrode contact 142 is for collecting the light of the Second Type (electrically opposite with the first kind) on cell matrix 111
Raw carrier (such as hole), and form electric current.So back electrode contact 142 for photovoltaic cell 100 the second pole (with the
One pole is on the contrary, such as anode).
At this point, the photovoltaic module formed by the present embodiment photovoltaic cell 100, with reference to Fig. 6, in adjacent two panels photovoltaic cell
The back side of the cell piece ontology 110 of piece 100, even wherein the back side of a piece of photovoltaic cell 100 perforates electrode to the weldering of back side welding 200
Contact 141, while the back electrode contact 142 of another photovoltaic cell 100 of series welding, and then can be by adjacent two panels photovoltaic cell
Piece 100 is connected.Therefore, the photovoltaic module of the embodiment of the present application can be by (carrying on the back different photovoltaic cells 100 in the same face
Face) realize series connection, and then welding difficulty is effectively reduced, it prevents that photovoltaic cell is caused to damage in welding process.
It is welded simultaneously as each photovoltaic cell 100 is realized in the same face.Therefore, the piece spacing of each photovoltaic cell 100
It can effectively reduce and (can specifically be contracted within 0.3mm), and then the photovoltaic module of same size can be made to may include more
More photovoltaic cells 100.Therefore, the photovoltaic module formed by the present embodiment photovoltaic cell 100, improves in unit area
Component power.
The setting back side perforates electrode contact 141 and contacts 142 mutually insulateds with back electrode, and then prevents same photovoltaic cell
100 positive and negative anodes short circuit.
Specifically, with reference to Fig. 5, when back side perforating electrode contact 141 is cathode, when back electrode contact 142 is anode, photovoltaic
Cell piece 100 can also include the back side aluminium layer 150 for improving photoelectric conversion efficiency.Back side aluminium layer 150 also is located at cell piece
The back side 110b of ontology 110.At this point, 142 connection back side aluminium layer 150 of back electrode contact.And back side perforating electrode contact 141 and back
It is equipped between face aluminium layer 150 and is dielectrically separated from area 100a, so that back side perforating electrode contact 141 is mutual with back side aluminium layer 150
Insulation, so that back side perforating electrode contact 141 contacts 142 mutually insulateds with back electrode.
Photovoltaic cell 100 can also include anti-reflection film layer 160.Anti-reflection film layer 160 is located at the front of cell piece ontology 110
100a.Front electrode contact 130 passes through anti-reflection film layer 160 and contacts with the positive 100a of cell piece ontology 110.
In one embodiment, with reference to Fig. 4 and Fig. 6, the back electrode that same photovoltaic cell 100 is further arranged is connect
Touching 142 contacts 141 with back side perforating electrode and is aligned setting, so that photovoltaic module can choose the photovoltaic cell of same specification
Piece 100 is assembled, and simplifies assembling process.
Certainly, therefore the application is not limitation, and back electrode contact 142 and the back side of same photovoltaic cell 100 perforate
Electrode contact 141 can also be arranged in a staggered manner.At this point it is possible to be arranged for weld the adjacent two panels photovoltaic cell 100 of connecting,
Back electrode contact 142 on different photovoltaic cells 100 contacts 141 with back side perforating electrode and is aligned setting.
In one embodiment, with reference to Fig. 3 to Fig. 5, back side perforating electrode contact 141 contacts 131 with front perforating electrode
It corresponds.At this point, the back side perforating electrode contact 141 quantity can be set to it is multiple, naturally it is also possible to be set as one.One
The both ends and phase that 131 are respectively overlay in a through hole 110c are contacted with front perforating electrode to back side perforating electrode contact 141
Mutually electrical connection, and then allow the electric current collected in front perforating electrode contact 131 that can equably flow to the back side with carrier and wear
Conductive electrode contact 141.
Certainly, in the application other embodiments, the back side perforate electrode contact 141, front perforating electrode contact 131 and
The set-up mode of through hole 110c can also be unlike this.For example, can be set it is multiple front perforating electrodes contact 131, it is multiple
Through hole 110c and a back side perforating electrode contact 141.Front perforating electrode contact 131 is a pair of with through hole 110c mono-
It answers.Each front perforating electrode contact 131 perforates electrode with the same back side by corresponding through hole 110c and contacts 141 electrical connections.
Alternatively, a front perforating electrode contact 131, multiple through hole 110c and multiple back sides perforating electrode contact also can be set
141.The back side perforates electrode contact 141 and through hole 110c and corresponds.Each back side perforating electrode contact 141 is passed through by correspondence
Perforation 110c contacts 131 electrical connections with same front perforating electrode.Or other forms also can be set into, the application to this not
It is limited.
In one embodiment, with reference to Fig. 4, the quantity that the back side perforates electrode contact 141 is multiple.It is vertical with first direction
Direction be second direction.Multiple back side perforating electrode contacts 141 form N column in a second direction, and N is the positive integer greater than 1.
At this point, the adjacent photovoltaic cell piece 100 in photovoltaic module has more electric current carrying pathways, and then improve electrical reliability.
Certainly, in the application other embodiments, the setting form that the back side perforates electrode contact 141 can also be with this not
Together.For example, it is also possible to which the biggish back side perforating electrode contact 141 of a length in a second direction is arranged.
In one embodiment, with reference to Fig. 4 and Fig. 6, in N column back side perforating electrode contact 141, each column includes at least
Two back side perforating electrode contacts 141.At this point, adjacent two panels photovoltaic cell 100 is connected by back side welding 200
When, back side welding 200 can contact 141 with the back side perforating electrode of conduction first kind photo-generated carrier and effectively and reliably weld
It connects, preventing single back side perforating electrode from contacting 141 rosin joints leads to poor electrical contact.Specifically, it can be set in each column, the back side
The quantity for perforating electrode contact 141 is two, to can guarantee electrical reliability.Meanwhile the number of openings is less at this time, so that work
Skill is simpler, is conducive to improve production capacity.
Certainly, in N column back side perforating electrode contact 141, each column can also perforate electrode contact with only one back side
141, it can specifically be set according to actual needs.For example, with reference to Fig. 8 and Fig. 4, for full wafer type photovoltaic cell (In
Length B on first direction is identical as length L in a second direction), or for half type photovoltaic cell (in first party
Upward length B is the half of length L in a second direction), it can be set in N column back side perforating electrode contact 141, often
Arrange back side perforating electrode contact 141 there are two setting.But with reference to Figure 11, for five/a piece of type photovoltaic cell is (first
Length B on direction is 1/5th of length L in a second direction), it can be set in N column back side perforating electrode contact
In 141, each column contacts 141 to a back side perforating electrode is equipped with.
In one embodiment, with reference to Fig. 4, photovoltaic cell 100 further includes the perforating electrode master extended in a first direction
Grid line 170.Perforating electrode main grid line 170 also is located at the back side 110b of cell piece ontology 110.It can perforate electrode with the back side and connect
Touching 141 is formed in same screen printing process.Meanwhile perforating electrode main grid line 170 connects adjacent back side perforating electrode and connects
Touching 141, and then by 141 electrical connection of each back side perforating electrode contact, improve electrical reliability.
In one embodiment, with reference to Fig. 4 and Fig. 6, rear electrode contact 140 further includes intensifier electrode contact 143.Add
Forceful electric power pole contact 143 contacts 141 with back side perforating electrode and is aligned setting in a first direction.Therefore, in two panels photovoltaic cell
100 by back side welding 200 when being connected, and back side welding 200 can contact 141 with back side perforating electrode simultaneously and add
143 welding of forceful electric power pole contact, even if so that can also be carried out when back side perforating electrode contacts 141 rosin joint with back side welding 200
It is good in electrical contact.
Similar to back side perforating electrode contact 141, intensifier electrode contact 143 can also be configured according to actual needs.
For example, with reference to Fig. 8, for full wafer type photovoltaic cell, in a column back side perforating electrode contact 141, can be set there are two
Intensifier electrode contact 143.Intensifier electrode contact 143 can contact 141 with back side perforating electrode and be arranged alternately.With reference to Fig. 4, for
An intensifier electrode contact 143 has can be set in a column back side perforating electrode contact 141 in half type photovoltaic cell.Add
Forceful electric power pole contact 143 is located between two back side perforating electrode contacts 141.And Figure 11 is referred to, for five/a piece of type photovoltaic
Cell piece can also be not provided with intensifier electrode contact 143.
In one embodiment, with reference to Fig. 3, front electrode contact 130 further includes multiple positive electrodes contacts 132 and multiple
Front perforating electrode contact 131.Multiple positive electrode contacts 132 and multiple front perforating electrode contacts 131 are in a second direction
N column are formed, N is the positive integer greater than 1.
Wherein, each column includes M positive electrode contact 132 and at least one front perforating electrode contact 131.M is greater than 1
Positive integer.Adjacent positive electrode contact 132 is connected by the first main gate line 121.Adjacent positive electrode contact 132 is perforated with front
Electrode contact 131 is connected by the second main gate line 122.
In addition, with reference to Fig. 4, the back side 110b of cell piece ontology 110 also may include multiple back electrodes contacts 142 and
Multiple back side perforating electrode contacts 141.Multiple positive electrode contacts 132 and multiple front perforating electrode contacts 131 are also second
Side is upwardly formed N column.Wherein, each column includes X back electrode contact 142 and at least one back side perforating electrode contact 141.Back
Face perforating electrode contact 141 contacts 142 mutually insulateds with back electrode.
Specific N value, M value and contact number, X that the front perforating electrode that 132 are aligned contacts 131 with each column positive electrode
Value and the number that the back side perforating electrode contact 141 that 142 are aligned is contacted with each column back electrode can design according to the actual situation.
For example, with reference to Fig. 7 and Fig. 8, for full wafer type photovoltaic cell, can design N is 9~13 (can specifically take 12), and M can be with
It is 10, the number that the front perforating electrode contact 131 that 132 are aligned is contacted with each column positive electrode can be 2, X can be 5, and every
The number of the back side perforating electrode contact 141 of 142 alignment of column back electrode contact can be 2.With reference to Fig. 3 and Fig. 4, for half
Type photovoltaic cell, can design N is 7~11 (can specifically take 9), and M can be 5, and 132 are contacted with each column positive electrode and is aligned
It can be 3 that the number of front perforating electrode contact 131, which can be 2, X, and 142 back side perforating electricity being aligned are contacted with each column back electrode
The number of pole contact 141 can be 2.And Figure 10 and Figure 11 is referred to, for five/a piece of type photovoltaic cell, it can design
N is 5~9 (can specifically take 6), and M can be 2, and the front perforating electrode contact 131 that 132 are aligned is contacted with each column positive electrode
Number can be that 1, X can be 2, and the number that the back side perforating electrode contact 141 that 142 are aligned is contacted with each column back electrode can be
1。
Meanwhile with reference to Figure 13, the present embodiment photovoltaic cell 100 further includes face bonding band 180, each positive electricity in same row
Pole contact 132 and front perforating electrode contact 131 are welded with same face bonding band 180, so that each first in each column
The electric current that the photo-generated carrier collected in main gate line 121 and the second main gate line 122 is formed can reliably be transmitted to front and wear
Conductive electrode contact 131.
In one embodiment, with reference to Figure 10, photovoltaic cell 100 further includes multiple thin grid lines 191 and multiple anti-breaking
Grid 192.Multiple thin grid lines 191 and multiple anti-breaking grid 192 also are located at the positive 110a's of cell piece ontology 110.Pass through setting
Thin grid line 191 can more widely collect photo-generated carrier.Thin grid line 191 is vertical with front main grid line 120, and connects front
Main gate line 120, and then the photo-generated carrier that thin grid line 191 is collected is collected to front main grid line 120.
Anti-breaking grid 192 connect adjacent thin grid line 191, so that the photo-generated carrier on thin grid line 191 can pass through
A plurality of circuit transmission is to front main grid line 120.Therefore, anti-breaking grid 192, which can prevent thin grid line 191 to be broken, causes to collect thereon
Photo-generated carrier, which cannot transmit, is collected to front main grid line 120.
In addition, referring to figs. 14 to 16 in the embodiment of the present application, may be used also after the multiple series connection of photovoltaic cell 100 welding
To be carried out in parallel or series by busbar 300, and electrode is drawn, laminate, so that photovoltaic module be made.
Each technical characteristic of above embodiments can be combined arbitrarily, for simplicity of description, not to above-described embodiment
In each technical characteristic it is all possible combination be all described, as long as however, the combination of these technical characteristics be not present lance
Shield all should be considered as described in this specification.
The several embodiments of the application above described embodiment only expresses, the description thereof is more specific and detailed, but simultaneously
The limitation to utility model patent range therefore cannot be interpreted as.It should be pointed out that for the ordinary skill people of this field
For member, without departing from the concept of this application, various modifications and improvements can be made, these belong to the application's
Protection scope.Therefore, the scope of protection shall be subject to the appended claims for the application patent.
Claims (10)
1. a kind of photovoltaic cell characterized by comprising
Front main grid line, including the first main gate line and the second main gate line being electrically connected to each other；Set prolonging for the front main grid line
Stretching direction is first direction, and first main gate line is successively arranged with second main gate line along the first direction, and described
Second main gate line is set to an avris；
Front electrode contact, connects the front main grid line；The front electrode contact includes front perforating electrode contact, described
Front perforating electrode connects second main gate line；
Cell piece ontology has the front and the back side being disposed opposite to each other, and is equipped with through hole in an avris of the first direction；Institute
It states front main grid line and front electrode contact is located at the front of the cell piece ontology；
The rear electrode contact, positioned at the back side of the cell piece ontology, the back side perforating electrode contact including mutually insulated
It is contacted with back electrode, an avris of the first direction, and back side perforating electricity is arranged in the back side perforating electrode contact
Pole contact is covered each by the both ends of the through hole with the front perforating electrode and is electrically connected to each other.
2. photovoltaic cell according to claim 1, which is characterized in that the back electrode contact and back side perforating electricity
Pole contact alignment setting.
3. photovoltaic cell according to claim 1, which is characterized in that the back side perforating electrode contact and the front
Perforating electrode contact is arranged in a one-to-one correspondence, and a pair of back side perforating electrode contact contacts difference with the front perforating electrode
It is covered on the both ends of a through hole and is electrically connected to each other.
4. photovoltaic cell according to claim 1-3, which is characterized in that the side vertical with the first direction
To for second direction, the quantity of the back side perforating electrode contact be it is multiple, multiple back sides perforating electrodes contacts are second
Side is upwardly formed N column, and N is the positive integer greater than 1.
5. photovoltaic cell according to claim 4, which is characterized in that arrange the back side perforating electrode contact in the N
In, each column includes at least two back side perforating electrode contacts.
6. photovoltaic cell according to claim 5, which is characterized in that the photovoltaic cell further includes along described first
The perforating electrode main grid line that direction extends, the perforating electrode main grid line is located at the back side of the cell piece ontology, and connects phase
Adjacent back side perforating electrode contact.
7. photovoltaic cell according to claim 4, which is characterized in that the rear electrode contact further includes intensifier electrode
Contact, the intensifier electrode contact contact with back side perforating electrode and are aligned setting in a first direction.
8. photovoltaic cell according to claim 1, which is characterized in that
The front electrode contact further includes multiple positive electrode contacts and multiple front perforating electrode contacts；It is multiple described
Positive electrode contact and multiple front perforating electrode contacts form N column in a second direction, and N is the positive integer greater than 1；
In N column positive electrode contact, each column includes the M positive electrode contacts and at least one described front perforating electricity
Pole contact, adjacent positive electrode contact are connected by first main gate line, the adjacent positive electrode contact with it is described
Perforating electrode contact in front is connected by the second main gate line, and M is the positive integer greater than 1；
The photovoltaic cell further includes face bonding band, and each positive electrode contact and front perforating electrode in same row connect
Touching and the same face bonding welding.
9. photovoltaic cell according to claim 1, which is characterized in that the photovoltaic cell further includes being located at the electricity
Positive multiple thin grid lines of pond piece ontology and multiple anti-breaking grid, the thin grid line is vertical with the front main grid line, and even
The front main grid line is connect, the anti-breaking grid connect the adjacent thin grid line.
10. a kind of photovoltaic module, which is characterized in that including at least described in any item photovoltaic cells of two panels claim 1-9
And the back side welding of each photovoltaic cell of series connection, the back of the cell piece ontology of the photovoltaic cell described in adjacent two panels
Face, the back side welding weldering even wherein back side perforating electrode contact of a piece of photovoltaic cell, while series welding is another
The back electrode of photovoltaic cell described in piece contacts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920428483.3U CN209641664U (en) | 2019-04-01 | 2019-04-01 | Photovoltaic cell and photovoltaic module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920428483.3U CN209641664U (en) | 2019-04-01 | 2019-04-01 | Photovoltaic cell and photovoltaic module |
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| Publication Number | Publication Date |
|---|---|
| CN209641664U true CN209641664U (en) | 2019-11-15 |
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| CN201920428483.3U Active CN209641664U (en) | 2019-04-01 | 2019-04-01 | Photovoltaic cell and photovoltaic module |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113921622A (en) * | 2021-09-30 | 2022-01-11 | 中国科学院苏州纳米技术与纳米仿生研究所 | Battery piece substrate, photovoltaic battery assembly and assembling method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113921622A (en) * | 2021-09-30 | 2022-01-11 | 中国科学院苏州纳米技术与纳米仿生研究所 | Battery piece substrate, photovoltaic battery assembly and assembling method thereof |
| CN113921622B (en) * | 2021-09-30 | 2024-04-05 | 中国科学院苏州纳米技术与纳米仿生研究所 | Cell substrate, photovoltaic cell assembly and assembly method thereof |
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