阅读说明：本技术 一种切片光伏组件 (A kind of slice photovoltaic module ) 是由 郭俊盼 张舒 黄宏伟 王乐 于 2019-09-25 设计创作，主要内容包括：本发明公开一种切片光伏组件,包括一个或多个串联连接的电池单元,所述电池单元包括N个并联连接的电池串,2≤N≤6,每个电池单元中的多个并联连接的电池串还并联有一旁路二极管,所述旁路二极管通过跳线与电池单元并联；所述电池串包括多个通过连接材料串联连接的小电池片；所述小电池片为156*156至300*300mm等大小的太阳能电池,经过激光切割成5-8个独立的小电池,每个小电池片上都有正电极和背电极,且每个正电极和背电极位置相互重合或者分别在电池片两端边缘,小电池片间的间距为-2至5mm。本发明在组件功率大幅提升的同时,不会带来组件短路电流的大幅提升,避免增加功率损耗,同时也可避免因线盒额定电流增大而给组件带来潜失效风险。(The present invention discloses a kind of slice photovoltaic module, the battery unit being connected in series including one or more, the battery unit includes N number of battery strings being connected in parallel, 2≤N≤6, multiple battery strings being connected in parallel in each battery unit are also parallel with a bypass diode, and the bypass diode passes through wire jumper and battery units in parallel；The battery strings include multiple baby battery pieces being connected in series by connecting material；The baby battery piece is the solar battery of the sizes such as 156*156 to 300*300mm, by being laser-cut into 5-8 independent baby batteries, each baby battery on piece has positive electrode and back electrode, and each positive electrode and back electrode position overlap or the spacing between cell piece edges at two ends, baby battery piece is -2 to 5mm respectively.The present invention will not bring being substantially improved for component short circuit current while component power is substantially improved, and avoid increasing power loss, while also can avoid bringing latent failure risk to component due to wire box rated current increases.)

1. a kind of slice photovoltaic module, it is characterised in that: including the battery unit (3) that one or more is connected in series, the electricity Pool unit (3) includes N number of battery strings (2) being connected in parallel, 2≤N≤6, what multiple in each battery unit (3) were connected in parallel Battery strings (2) are also parallel with a bypass diode (4), and the bypass diode (4) passes through wire jumper (5) and battery unit (3) simultaneously Connection；The battery strings (2) include multiple baby battery pieces (1) being connected in series by connecting material (6)；The baby battery piece (1) For the solar battery of the sizes such as 156*156 to 300*300mm, by being laser-cut into 5-8 independent baby batteries, Mei Ge little There are positive electrode and back electrode on cell piece (1), and each positive electrode and back electrode position overlap or respectively in battery Piece edges at two ends, the spacing between baby battery piece (1) are -2 to 5mm.

2. slice photovoltaic module according to claim 1, it is characterised in that: the battery unit (3) has multiple, battery It is connected between unit (3) and battery unit (3) by busbar (7), two pole of bypass in parallel is distinguished in multiple battery units Wire jumper (5) between pipe (4) is one another in series, and the busbar (7) being connected in series between battery unit intersects vertically.

3. slice photovoltaic module according to claim 1, it is characterised in that: the wire jumper (5) be set to the battery strings back side, Between battery strings and battery strings, alternatively, battery strings edge.

4. slice photovoltaic module according to claim 1, it is characterised in that: the wire jumper (5) is set to the battery strings back side, And it is isolated between wire jumper (5) and battery strings (2) using insulating materials.

5. slice photovoltaic module according to claim 1, it is characterised in that: the wire jumper (5) is set to battery strings and electricity Between the string of pond, alternatively, battery strings edge, and have certain spacing between wire jumper (5) and battery strings (2).

6. slice photovoltaic module according to claim 1, it is characterised in that: under component normal operation, wire jumper (5) Electric current is not transmitted, when shadow occlusion occurs in the battery unit in parallel with wire jumper, shielded area reaches bypass diode starting When threshold values, bypass diode (4) work, electric current mainly passes through wire jumper and flows through from bypass diode, this electricity being blocked by shadow Pool unit is gradually shielded.

Technical field

The invention belongs to technical field of solar, and in particular to a kind of slice photovoltaic module.

Background technique

Existing solar components generally use full wafer or full wafer to cut cell piece partly, battery chip size one by laser As be 156.75*156.75mm, then built-up circuit is connected by series connection or in series and parallel, wherein longitudinal generally using 6 string electricity Pond arrangement, component short circuit current are generally the electric current of full wafer cell piece.As market persistently promotes high power component demand, In Existing battery technology mention effect gradually be limited in the case where, increase silicon area, import big silicon wafer, gradually become fast lifting component A kind of shortcut of power and efficiency.It imports big silicon wafer and although improves component power, still, also bring at least following several respects The shortcomings that: 1, component Isc be substantially improved, and assembly junction box rated current also needs to be promoted therewith, and bypass diode performance needs It is promoted, when electric current reaches a certain level, existing bypass diode has been unable to satisfy；There is short circuit in diode in wire box simultaneously When, high current will increase the risk of wire box heating burnout.2, size of components door amplitude variation is big, produces energy beyond existing glass factory in the industry Power needs device upgrade to be transformed, and increases cost.3, bypass diode connection relatively difficult to achieve for unconventional component.

Therefore, it is necessary to design a kind of photovoltaic module, while increase silicon area, hoisting power, drawbacks described above is avoided.

Summary of the invention

To solve the above-mentioned problems, the present invention provides a kind of slice photovoltaic modulies, are importing large-sized silicon wafers promotion group While part power, component Isc and door width size are not significantly increased, reduces the power loss of solar cell module, improves Solar cell module hot spot power loss.

For this purpose, the present invention adopts the following technical scheme:

A kind of slice photovoltaic module, including the battery unit (3) that one or more is connected in series, the battery unit (3) Including N number of battery strings (2) being connected in parallel, 2≤N≤6, multiple battery strings (2) being connected in parallel in each battery unit (3) It is also parallel with a bypass diode (4), the bypass diode (4) is in parallel with battery unit (3) by wire jumper (5)；The electricity Pond string (2) includes multiple baby battery pieces (1) being connected in series by connecting material (6)；The baby battery piece (1) is 156*156 To the solar battery of the sizes such as 300*300mm, by being laser-cut into 5-8 independent baby batteries, each baby battery piece (1) On have positive electrode and back electrode, and each positive electrode and back electrode position overlap or respectively in two end edge of cell piece Edge, the spacing between baby battery piece (1) are -2 to 5mm.

Further, the battery unit (3) has multiple, passes through confluence between battery unit (3) and battery unit (3) Item (7) series connection, the wire jumper (5) distinguished in multiple battery units between the bypass diode (4) of parallel connection are one another in series, and with electricity The busbar (7) being connected in series between pool unit intersects vertically.

As a kind of specific embodiment, the wire jumper (5) be set to the battery strings back side, battery strings and battery strings it Between, alternatively, battery strings edge.

Further, the wire jumper (5) is set to the battery strings back side, and using insulation between wire jumper (5) and battery strings (2) Material is isolated.

Further, the wire jumper (5) is set between battery strings and battery strings, alternatively, battery strings edge, and wire jumper (5) there are certain spacing, generally 2-10mm between battery strings (2).

Further, under component normal operation, wire jumper (5) does not transmit electric current, when this electricity in parallel with wire jumper There is shadow occlusion in pool unit, when shielded area reaches bypass diode startup threshold values, bypass diode (4) work, and electric current master It to be flowed through by wire jumper from bypass diode, this battery unit being blocked by shadow will be shielded gradually.So as to avoid quilt The battery unit blocked is damaged because of overheat.

Compared with prior art, the invention has the following beneficial effects:

By existing large-sized silicon wafers, (solar battery sheet of 156*156 to 300*300mm) are cut by laser in the present invention It is cut into the baby battery piece of 5-8 independent same sizes, then by circuit design, above-mentioned several baby battery pieces are gone here and there Connection, in parallel, series connection, sequentially form battery strings, battery unit and photovoltaic module, by Optimization Design of Electronic Circuits, realize:

1, while importing large-sized silicon wafers, component power is promoted, component short circuit current is not significantly increased, avoids increasing The power loss of component, while also can avoid increasing because of wire box rated current, the risk of latent failure is brought to component.

2, it avoids component door width to be significantly increased while component power is substantially improved, produces energy beyond glass manufacturer in the industry Power, while also avoiding potential high transportation cost caused by gate width component.

3, wire jumper design is introduced, dexterously solves diode connection method series-parallel for batteries in parallel connection.It can conveniently connect Enter bypass diode, realizes bypass functionality.

Detailed description of the invention

Fig. 1 is the circuit diagram of the embodiment of the present invention 1；

Fig. 2 is the back side effect picture of the embodiment of the present invention 1；

The circuit diagram of this hair of Fig. 3 inventive embodiments 2；

Fig. 4 is the back side effect picture of the embodiment of the present invention 2；

Fig. 5 is a kind of connection type of the medium and small cell piece of the present invention；

Fig. 6 is another connection type of the medium and small cell piece of the present invention；

Wherein: 1 is baby battery piece, and 2 be battery strings, and 3 be battery unit, and 4 be bypass diode, and 5 be wire jumper, and 6 be connection Material, 7 be busbar.

Specific embodiment