Photovoltaic module compatible with battery technology iteration

Abstract

The utility model discloses a photovoltaic module compatible with battery technology iteration, which relates to the technical field of photovoltaic modules, and comprises a photovoltaic module body and battery units arranged on the photovoltaic module body, the battery units are connected in parallel, each battery unit comprises a plurality of battery strings connected in series, and the battery strings are connected in parallel. And each battery string comprises a plurality of battery piece structures which are connected in series. The photovoltaic assembly compatible with battery technology iteration can replace a 156 specification photovoltaic assembly which has been put into the market but has a failure.

Description

Technical Field

[0001] This utility model relates to the field of photovoltaic module technology, and in particular to a photovoltaic module compatible with battery technology iterations. Background Technology

[0002] Currently, the country is vigorously developing the photovoltaic new energy industry, and the photovoltaic market has a promising future. Over the years, in order to meet market demand, the industry has continuously improved its processes, dimensions, and performance, mainly in terms of cell technology routes and dimensions. Cell technology routes have evolved from polycrystalline to monocrystalline, from P-type to N-type, and cell dimensions have also increased from 156mm and 166mm to the current 182mm and 210mm.

[0003] The 156mm photovoltaic module was the mainstream model from 2012 to 2018, with its module size remaining basically fixed. In the following two years, the cell size rapidly transitioned to the current mainstream cell size and has remained largely unchanged. The 156mm photovoltaic module has a relatively long history, a large market share, and a long time on the market. However, there are no longer any new products being produced for the 156mm photovoltaic module. Therefore, how to replace the 156mm photovoltaic modules that have been put on the market but have failed has become a problem that needs to be solved. Utility Model Content

[0004] The purpose of this invention is to provide a photovoltaic module that is compatible with battery technology iterations, so as to solve the problems existing in the prior art and replace the 156 specification photovoltaic modules that have been put on the market but have failed.

[0005] To achieve the above objectives, this utility model provides the following solution:

[0006] This utility model provides a photovoltaic module compatible with battery technology iterations, including a photovoltaic module body and battery cells disposed on the photovoltaic module body. The battery cells are connected in parallel, each battery cell includes a plurality of battery strings connected in series, and each battery string includes a plurality of battery cell structures connected in series.

[0007] Preferably, there are two battery cells.

[0008] Preferably, each of the battery cells includes five battery strings and a vertical busbar.

[0009] Preferably, the five battery strings are a first battery string, a second battery string, a third battery string, a fourth battery string, and a fifth battery string, and the vertical busbar is located between the third battery string and the fourth battery string, and the vertical busbar is connected to the third battery string and the fourth battery string respectively.

[0010] Preferably, the distance between the first battery string and the second battery string, the distance between the second battery string and the third battery string, and the distance between the fourth battery string and the fifth battery string all do not exceed 11.5 mm.

[0011] Preferably, the distance between the third battery string and the fourth battery string does not exceed 20mm.

[0012] Preferably, the width of the vertical busbar does not exceed 6 mm.

[0013] Preferably, each of the battery strings comprises eight to ten of the battery cell structures.

[0014] Preferably, the distance between adjacent cell structures in the same battery string does not exceed 9 mm.

[0015] Preferably, the photovoltaic module is rectangular, with the long side of the photovoltaic module having a length of 1640mm-1957mm and the short side having a length of 992mm.

[0016] The present invention achieves the following technical advantages over the prior art:

[0017] This utility model designs a photovoltaic module that uses mainstream 182 / 182R solar cells and has the same form factor and size design as the 156 specification photovoltaic module. It can replace 156 specification photovoltaic modules that have been put on the market but have failed. It is compatible with any technology route such as PERC, TOPCon, BC, and HJT, increasing adaptability. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a simplified diagram of a photovoltaic module based on the compatible battery technology iteration of this utility model;

[0020] Figure 2 This is a schematic diagram of a photovoltaic module compatible with battery technology iterations according to this utility model. Figure 1 (1640mm*992mm);

[0021] Figure 3 This is a schematic diagram of a photovoltaic module compatible with battery technology iterations according to this utility model. Figure 2 (1957mm*992mm);

[0022] Wherein: 100- Photovoltaic module compatible with battery technology iteration, 1- Photovoltaic module body, 2- Battery cell, 3- First battery string, 4- Second battery string, 5- Third battery string, 6- Fourth battery string, 7- Fifth battery string, 8- Vertical busbar, 9- Battery cell structure. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] The purpose of this invention is to provide a photovoltaic module that is compatible with battery technology iterations, so as to solve the problems existing in the prior art and replace the 156 specification photovoltaic modules that have been put on the market but have failed.

[0025] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0026] like Figures 1 to 3 As shown: This embodiment provides a photovoltaic module 100 compatible with battery technology iterations, including a photovoltaic module body 1 and battery cells 2 disposed on the photovoltaic module body 1. The photovoltaic module body 1 has the same size as existing photovoltaic module bodies 1. Each battery cell 2 is connected in parallel, and each battery cell 2 includes several series-connected battery strings. Each battery string includes several series-connected battery cell structures 9. This embodiment designs a photovoltaic module using mainstream 182 / 182R battery cells, with the same panel size design as 156 specification photovoltaic modules. It can replace 156 specification photovoltaic modules that have been put on the market but have failed. It is compatible with any technology route such as PERC, TOPCon, BC, and HJT, increasing adaptability.

[0027] Specifically, in this embodiment, the photovoltaic module is rectangular, with the long side of the photovoltaic module measuring 1640mm-1957mm and the short side measuring 992mm. The photovoltaic module is preferably available in two sizes: 1640mm*992mm (L1*W) and 1957mm*992mm (L2*W), the same as the size of the 156mm specification photovoltaic module.

[0028] In this embodiment, there are two battery units 2. Each battery unit 2 includes five battery strings and a vertical busbar 8. The number of battery cell structures 9 in each battery string is equal. The five battery strings are a first battery string 3, a second battery string 4, a third battery string 5, a fourth battery string 6, and a fifth battery string 7. The first battery string 3, the second battery string 4, the third battery string 5, the vertical busbar 8, the fourth battery string 6, and the fifth battery string 7 are arranged in series in the order of positive and negative electrodes. Adjacent battery strings are connected by welding the ends of the connecting busbar. The distance between the first battery string 3 and the second battery string 4, the distance between the second battery string 4 and the third battery string 5, and the distance between the fourth battery string 6 and the fifth battery string 7 are all adjustable and do not exceed 11.5 mm. The distance between the third battery string 5 and the fourth battery string 6 is adjustable and does not exceed 20 mm. The width of the vertical busbar 8 does not exceed 6 mm.

[0029] In this embodiment, each battery string includes eight to ten battery cell structures 9, and each battery cell structure 9 is connected by a solder strip. The battery cell structure 9 is a half-piece battery cell structure 9 formed by cutting 182 / 182R battery cells in the middle using non-destructive cutting. The distance between adjacent battery cell structures 9 in the same battery string is adjustable and does not exceed 9mm.

[0030] This embodiment ensures that the five battery strings are an effective circuit, paired with a vertical bus bar 8. At the same time, the spacing arrangement design is reasonable and conforms to the International Electrotechnical Commission and national plate design standards. The design needs to be compatible with 182 / 182R battery cells and compatible with any technical route such as PERC, TOPCon, BC, and HJT.

[0031] The photovoltaic module body 1 of this embodiment has the same size and appearance design as the 156 specification photovoltaic module, and can replace the 156 specification photovoltaic module that has been put on the market but has failed.

[0032] Compared to 156-size photovoltaic modules of the same size, this embodiment uses 40-50 whole 182 series solar cells, reducing the number of solar cells by 20-22, increasing the power by 15-55W, and resulting in higher power generation per unit area of ​​the photovoltaic module.

[0033] This embodiment is compatible with various technologies for solar cells in the 182 / 182R size, including but not limited to PERC, TOPCon, BC, HJT, etc.

[0034] The frame height and mounting hole spacing of this embodiment can match the faulty 156 specification photovoltaic modules, which has excellent adaptability and improves installation efficiency.

[0035] This specification uses specific examples to illustrate the principles and implementation methods of this utility model. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this utility model. In summary, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A photovoltaic module compatible with battery technology iterations, characterized in that: It includes a photovoltaic module body and battery cells disposed on the photovoltaic module body, wherein each battery cell is connected in parallel, each battery cell includes a plurality of battery strings connected in series, and each battery string includes a plurality of battery cell structures connected in series.

2. The photovoltaic module compatible with battery technology iterations according to claim 1, characterized in that: The battery unit consists of two cells.

3. The photovoltaic module compatible with battery technology iterations according to claim 1, characterized in that: Each of the battery cells includes five battery strings and a vertical busbar.

4. The photovoltaic module compatible with battery technology iterations according to claim 3, characterized in that: The five battery strings are designated as a first battery string, a second battery string, a third battery string, a fourth battery string, and a fifth battery string. The vertical busbar is located between the third battery string and the fourth battery string, and is connected to both the third battery string and the fourth battery string.

5. The photovoltaic module compatible with battery technology iterations according to claim 4, characterized in that: The distance between the first battery string and the second battery string, the distance between the second battery string and the third battery string, and the distance between the fourth battery string and the fifth battery string all do not exceed 11.5 mm.

6. The photovoltaic module compatible with battery technology iterations according to claim 4, characterized in that: The distance between the third battery string and the fourth battery string does not exceed 20mm.

7. The photovoltaic module compatible with battery technology iterations according to claim 3, characterized in that: The width of the vertical busbar does not exceed 6mm.

8. The photovoltaic module compatible with battery technology iterations according to claim 1, characterized in that: Each of the battery strings includes eight to ten of the battery cell structures.

9. The photovoltaic module compatible with battery technology iterations according to claim 1, characterized in that: The distance between adjacent cell structures in the same battery string does not exceed 9 mm.

10. The photovoltaic module compatible with battery technology iterations according to claim 1, characterized in that: The photovoltaic module is rectangular, with the length of the long side being 1640mm-1957mm and the length of the short side being 992mm.

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