Battery cell and processing apparatus

Abstract

A battery unit and processing equipment relate to the field of batteries, the battery unit comprises a plurality of back contact battery strings and a busbar assembly, the plurality of back contact battery strings are arranged in a first direction, each back contact battery string has a battery piece and a welding strip extending in the first direction, the welding strip has a main body section and a connecting section, the main body section is arranged on the battery piece, and the connecting section is connected with the main body section, the busbar assembly comprises a first busbar assembly and a second busbar assembly, the first busbar assembly is connected with two back contact battery strings arranged adjacently, in the thickness direction of the battery unit, the connecting sections of the two back contact battery strings arranged adjacently are both connected to the top surface of the first busbar assembly, and the battery pieces are all located on the bottom surface of the first busbar assembly, the second busbar assembly is connected with a back contact battery string located at the edge, and the projection of the second busbar assembly in the thickness direction of the battery unit is located within the range of the battery piece. Through the above technical scheme, the yield of the battery is ensured.

Description

Technical Field

[0001] This disclosure relates to the field of batteries, and more specifically, to a battery cell and processing equipment. Background Technology

[0002] Back-contact solar cells are solar cells in which both the positive and negative metal contacts are located on the back of the cell, and they are commonly used in the photovoltaic field. Back-contact solar cells are interconnected using solder ribbons to form back-contact cell strings. The edges of the back-contact cell strings have busbar components soldered onto the solder ribbons to form the positive or negative leads of the back-contact cell string.

[0003] In related technologies, the welding effect between the solder strip located below the combiner module and the combiner module itself cannot be detected, and the reliability of the combiner module after welding to the solder strip cannot be guaranteed, reducing the product yield. Furthermore, to avoid the space occupied by the combiner module, if the back contact battery string is not connected to other back contact battery strings through the combiner module, the combiner module needs to be folded and placed on the battery cells. This results in a double layer of solder strips forming in the area of ​​the combiner module. During the folding process of the combiner module and in the area of ​​the combiner module, the battery cells are prone to microcracks, further reducing the product yield. Summary of the Invention

[0004] The purpose of this disclosure is to provide a battery cell and processing equipment to at least partially solve the problems existing in the related art.

[0005] To achieve the above objectives, this disclosure provides a battery cell, comprising:

[0006] Multiple back-contact battery strings are arranged in a first direction. Each back-contact battery string has a battery cell and a solder strip extending along the first direction. The solder strip has a body segment and a connecting segment. The body segment is disposed on the battery cell, and the connecting segment is connected to the body segment.

[0007] The bus assembly includes a first bus assembly and a second bus assembly.

[0008] The first busbar assembly is connected to two adjacent back-contact battery strings. In the thickness direction of the battery cells, the connecting segments of two adjacent back-contact battery strings are all connected to the top surface of the first busbar assembly, and the battery cells are all located on the bottom surface of the first busbar assembly.

[0009] The second busbar assembly is connected to the back contact battery string located at the edge, and the projection of the second busbar assembly in the thickness direction of the battery cell is within the range of the battery cell.

[0010] In some possible implementations, the busbar assembly includes a busbar and a separator strip stacked in the thickness direction of the battery cell, the busbar being connected to the connecting segment, and the separator strip being disposed between the battery cell and the busbar.

[0011] In some possible implementations, in the first direction, the spacing L1 between two adjacent solar cells satisfies: 0.5mm ≤ L1 ≤ 8mm.

[0012] On the other hand, this disclosure also provides a processing apparatus for preparing a battery cell according to any one of the above, wherein the busbar assembly includes a busbar and a separator stacked in the thickness direction of the battery cell, and the processing apparatus includes:

[0013] The first welding device includes a first welding platform and a first welding fixture. The first welding platform is used for welding the busbar and the isolation strip, and the first welding fixture fixes the busbar and the isolation strip.

[0014] The second welding device includes a second welding platform and a second welding fixture. The second welding platform is used for welding the busbar and the connecting section, and the second welding fixture is used for fixing the busbar assembly and the connecting section.

[0015] The third welding fixture is used to fix the back contact battery string.

[0016] In some possible implementations, the first welding platform includes:

[0017] The first welding block, wherein the bus assembly is disposed on the first welding block;

[0018] A first platform body, wherein the first welding block is disposed on the first platform body, and the first platform body contains embedded first induction coils located on both sides of the first welding block, the first induction coils being used to heat the first welding block, and

[0019] A fixing block is disposed at the end of the first platform body. The fixing block has a first adsorption hole, and positioning pins on both sides of the first adsorption hole are used to abut against the edge of the busbar assembly.

[0020] In some possible implementations, the first welding fixture includes:

[0021] The first suction rod has a first suction cup at its end;

[0022] The first pressure rod has a pressure plate at its end, and the pressure plate has a clearance hole for avoiding the first adsorption rod;

[0023] The first support is connected to the first adsorption rod, and

[0024] The second bracket is connected to the first pressure rod via a first elastic element, the first elastic element being configured to compress when the pressure plate abuts against the busbar assembly.

[0025] Both the first bracket and the second bracket are capable of moving in a direction perpendicular to the busbar assembly.

[0026] In some possible implementations, the second welding platform includes:

[0027] The second welding block is used for welding the busbar and the connecting section, and

[0028] The second platform body has a second adsorption hole for adsorbing the busbar assembly. The second welding block is disposed on the second platform body. The second platform body has embedded second induction coils located on both sides of the second welding block. The second induction coils are used to heat the second welding block.

[0029] In some possible implementations, the second welding fixture includes:

[0030] The second suction rod has a second suction cup at its end;

[0031] The second pressure rod has a pressure head at its end;

[0032] The third support is connected to the second adsorption rod, and

[0033] The fourth bracket is connected to the second pressure rod via a second elastic element, the second elastic element being configured to compress when the pressure head abuts against the manifold assembly.

[0034] Both the third bracket and the fourth bracket are capable of moving in a direction perpendicular to the busbar assembly.

[0035] In some possible implementations, in the first direction, the length L2 of the pressure head and the extension length L3 of the busbar assembly satisfy: L2-L3>4mm.

[0036] In some possible implementations, the processing equipment includes a bending device for bending the connecting segment such that the included angle α between the connecting segment and the battery cell satisfies: 30°≤a≤60°.

[0037] The technical solutions provided by the embodiments of this disclosure may include the following beneficial effects:

[0038] Through the above technical solution, the battery cell in this disclosure, by improving the arrangement of the busbar assembly, places the busbar assembly between the connecting section of the back-contact battery string and the battery cells. This avoids obstructing the welding position after the busbar assembly is welded to the connecting section, allowing operators to confirm the welding effect after the busbar assembly and connecting section are welded, avoiding welding defects such as incomplete or missed welds, and ensuring product yield. At the same time, this design also makes reasonable use of the space between the battery cells and the connecting section, preventing the busbar assembly from protruding from the battery cells. The busbar assembly does not need to be bent after welding to the solder strip, avoiding potential microcracks in the battery cells and ensuring product yield.

[0039] Other features and advantages of this disclosure will be described in detail in the following detailed description section. Attached Figure Description

[0040] The accompanying drawings are provided to further illustrate the present disclosure and form part of the specification. They are used together with the following detailed description to explain the present disclosure, but do not constitute a limitation thereof. In the drawings:

[0041] Figure 1 This is a partial cross-sectional schematic diagram of two back-contact battery strings connected in related technologies;

[0042] Figure 2 This is a partial cross-sectional schematic diagram of a busbar assembly after it has been folded in a related technology.

[0043] Figure 3 This is a partial structural schematic diagram of the two back-contact battery connection areas of the battery cell disclosed in the embodiments of this application;

[0044] Figure 4 This is a partial cross-sectional schematic diagram of the two back-contact battery connection areas of the battery cell disclosed in the embodiments of this application;

[0045] Figure 5 This is a partial cross-sectional schematic diagram of the edge region of the battery cell in which the back contacts the battery, as disclosed in the embodiments of this application.

[0046] Figure 6 This is a schematic diagram of the structure of the first welding device in the processing equipment disclosed in the embodiments of this application;

[0047] Figure 7 This is a schematic diagram of the structure of the second welding device in the processing equipment disclosed in the embodiments of this application;

[0048] Figure 8 yes Figure 6 Enlarged view of section A;

[0049] Figure 9This is a partial structural schematic diagram of the second welding device in the processing equipment disclosed in the embodiments of this application from one perspective;

[0050] Figure 10 This is a partial structural schematic diagram of the second welding device in the processing equipment disclosed in the embodiments of this application from another perspective;

[0051] Figure 11 yes Figure 10 Enlarged view of section B;

[0052] Figure 12 This is a partial structural schematic diagram of the second welding device in the processing equipment disclosed in the embodiments of this application from one perspective, wherein the busbar assembly is connected to the connecting section;

[0053] Figure 13 yes Figure 12 Enlarged view of section C.

[0054] Explanation of reference numerals in the attached figures

[0055] 1-Battery cell, 11-Back contact battery string, 111-Battery cell, 112-Welding strip, 1121-Main body section, 1122-Connecting section, 12-Busseter assembly, 121-Busseter bar, 122-Separator bar, 2-First welding device, 21-First welding platform, 211-First welding block, 212-First platform body, 213-Fixing block, 2131-First suction hole, 2132-Positioning pin, 22-First welding fixture, 221-First suction rod, 2211-First suction cup 222-First pressure rod, 2221-Pressure plate, 2222-Allowing hole, 223-First bracket, 224-Second bracket, 3-Second welding device, 31-Second welding platform, 311-Second welding block, 312-Second platform body, 3121-Second suction hole, 32-Second welding fixture, 321-Second suction rod, 3211-Second suction cup, 322-Second pressure rod, 3221-Pressure head, 323-Third bracket, 324-Fourth bracket, 33-Third welding fixture. Detailed Implementation

[0056] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application. When the following description refers to the accompanying drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements.

[0057] In this application, the terms "upper," "lower," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this application and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0058] Furthermore, in addition to indicating location or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0059] Furthermore, the terms "installation," "setup," "equipped with," and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0060] Furthermore, the terms "first," "second," etc., are primarily used to distinguish different devices, elements, or components whose specific types and structures may be the same or different, and are not intended to indicate or imply the relative importance or quantity of the indicated devices, elements, or components. Unless otherwise stated, "a plurality of" means two or more.

[0061] A back-contact solar cell 111 is a type of solar cell 111 in which both the positive and negative metal contacts are located on the back side of the cell 111, and it is widely used in the photovoltaic field. The front side of the solar cell 111 is the light-receiving surface, while the back side is the non-light-receiving surface. The unobstructed structure on the front side of the solar cell 111 increases the effective light-receiving area and improves the conversion efficiency. The back-contact solar cells 111 are interconnected by solder ribbons 112 to form a back-contact solar cell string 11. The edges of the back-contact solar cell string 111 have busbar components 12 soldered to the solder ribbons 112 to form the positive or negative leads of the back-contact solar cell string 111.

[0062] In related technologies, if two back-contact battery strings 11 need to be interconnected, refer to... Figure 1 , Figure 1 This is a partial cross-sectional view of two back-contact battery strings connected in related technology. The busbar assembly 12 is simultaneously soldered onto the solder strips 112 of the two back-contact battery strings 11. Figure 1 Using the direction of the drawing as a reference, in Figure 1In this configuration, the back-contact battery string 11 is placed horizontally, with the battery cells 111 positioned below the solder strip 112. The busbar assembly 12 is positioned above the solder strip 112 and welded to it. Due to the obstruction of the busbar assembly 12, the welding effect between the solder strip 112 and the busbar assembly 12 cannot be detected. This compromises the reliability of the weld between the busbar assembly 12 and the solder strip 112, potentially leading to insufficient weld strength and reducing the product yield.

[0063] If the back contact battery string 11 is not connected to other back contact battery strings 11 via the busbar assembly 12, to avoid the busbar assembly 12 protruding from the edge of the battery cell 111 and occupying space after being connected to the solder ribbon 112, after the busbar assembly 12 is placed on top of the solder ribbon 112 and welded to the solder ribbon 112, the operator needs to fold the busbar assembly 12 and place it on the battery cell 111. A double layer of solder ribbon 112 will be formed in the area of ​​the busbar assembly 12 for the back contact battery string 11. (Refer to...) Figure 2 , Figure 2 This is a partial cross-sectional schematic diagram of a busbar assembly after it has been folded in a related technology. Figure 2 Referring to the orientation of the drawing, the back-contact battery string 11 is placed horizontally, with the battery cell 111 located below the solder strip 112. In the horizontal direction, the busbar assembly 12 overlaps with the battery cell 111, and solder strips 112 are welded to both the upper and lower surfaces of the busbar assembly 12. However, during the folding of the busbar assembly 12, and during subsequent processing of the back-contact battery string 11, such as laminating the back-contact battery string 11 with glass, the battery cell 111 below the busbar assembly 12 is prone to microcracks, which reduces the product yield. In other words, the arrangement of the busbar assembly 12 with the back-contact battery cell 111 in the related technology reduces the product yield.

[0064] In order to solve the problem that the arrangement of the busbar assembly 12 of the back contact battery cell 111 in the related technology will reduce the product yield, the solution of this application will be described in detail below with reference to the accompanying drawings.

[0065] Reference Figures 3 to 5 , Figure 3 This is a partial structural schematic diagram of the two back-contact battery connection areas of the battery cell disclosed in the embodiments of this application. Figure 4 This is a partial cross-sectional schematic diagram of the two back-contact battery connection areas of the battery cell disclosed in the embodiments of this application. Figure 5 This is a partial cross-sectional schematic diagram of the edge region of the battery cell that is in back contact with the battery, as disclosed in the embodiments of this application.

[0066] This disclosure provides a battery cell 1, including a plurality of back-contact battery strings 11 and a busbar assembly 12, wherein the plurality of back-contact battery strings 11 are arranged in a first direction. In some embodiments, two back-contact battery strings 11 may be arranged in the first direction. Unless otherwise specified, this disclosure will use the example of two back-contact battery strings 11 arranged in the first direction for illustration. In this disclosure, the first direction is represented by the X direction.

[0067] Each back-contact battery string 11 has a battery cell 111 and a solder ribbon 112 extending along a first direction. The battery cell 111 is a back-contact battery cell 111, and the solder ribbon 112 has a main body segment 1121 and a connecting segment 1122. The main body segment 1121 is disposed on the battery cell 111, and the connecting segment 1122 is connected to the main body segment 1121. Typically, during the manufacturing process of the back-contact battery string 11, the end of the solder ribbon 112 near the edge of the back-contact battery string 11 may be raised slightly. This raised portion of the solder ribbon 112 can be understood as the connecting segment 1122, while the portion of the solder ribbon 112 that connects to the battery cell 111 can be considered as the main body segment 1121.

[0068] In this disclosure, a busbar assembly 12 is disposed between a connecting segment 1122 and a battery cell 111. In some possible embodiments, the busbar assembly 12 may include a first busbar assembly. The first busbar assembly may be connected to two adjacent back-contact battery strings 11. In the connection region of two adjacent back-contact battery strings 11 of the battery cell 1, the busbar assembly 12 is respectively connected to two adjacent connecting segments 1122. It is understood that there is an electrical connection between the connecting segment 1122 and the busbar assembly 12 to achieve an electrical connection between the two back-contact battery strings 11. At this time, in the thickness direction of the battery cell 1, i.e. Figure 4 In the vertical direction of the drawing, the connecting segment 1122 of two adjacent back-contact battery strings 11 is connected to the top surface of the first busbar assembly, and the battery cells 111 are located on the bottom surface of the first busbar assembly. The first busbar assembly is located between the battery cells 111 and the connecting segment 1122 of two adjacent back-contact battery strings 11.

[0069] The first busbar assembly can avoid obstructing the welding position after welding with the connecting section 1122, and can also reduce the size of the battery cell 1 in the first direction by utilizing the dimensions of the battery cells 111 of the two back-contact battery strings 11 and the connecting section 1122 in the first direction. The two adjacent back-contact battery strings 11 do not need to be at least partially stacked on top of each other to reduce the size of the battery cell 1 in the first direction.

[0070] Continue with Figure 3 and Figure 4For reference, at this time, the upward-facing side surface of the battery cell 111 is the backlight surface of the battery cell 111, the first busbar assembly is disposed between the battery cell 111 and the connecting section 1122, and the connecting section 1122 of the solder ribbon 112 is located above the first busbar assembly, instead of being located above the solder ribbon 112 as in related technologies.

[0071] In addition to the connection points of two adjacent back contact battery strings 11, the back contact battery strings 11 in the battery cell 1 also have edges where a busbar assembly 12 is provided, but which are not connected to other back contact battery strings 11 via the busbar assembly 12. For example, in the first direction, the edges of the back contact battery strings 11 located at the end of the battery cell 1, or the edges of the battery cell 1. In this case, the busbar assembly 12 can only be connected to the connection segment 1122 of the solder strip 112 of one back contact battery string 11. In some possible embodiments, refer to Figure 5 The current collector assembly 12 may include a second current collector assembly connected to a back contact battery string 11 located at the edge. A connecting segment 1122 of the back contact battery string 11 is connected to the top surface of the second current collector assembly. The battery cell 111 is located on the bottom surface of the second current collector assembly. In this case, the second current collector assembly is also located between the battery cell 111 and the connecting segment 1122. The projection of the second current collector assembly in the thickness direction of the battery cell 1 can be within the range of the battery cell 111. In the thickness direction of the battery cell 1, i.e. Figure 5 The second busbar assembly is positioned between the connecting section 1122 and the battery cell 111 in the vertical direction of the drawing. This second busbar assembly not only avoids obstructing the welding position after welding to the connecting section 1122, but also utilizes the dimensions of the battery cell 111 and the connecting section 1122 in the first direction, ensuring that the busbar assembly 12 is located within the area of ​​the battery cell 111 in that direction. In the first direction, the busbar assembly 12 does not protrude from the battery cell 111. Thus, the second busbar assembly no longer needs to be folded onto the battery cell 111 to avoid space occupation, as is required in related technologies. This avoids increasing the thickness of the battery cell 1 and preventing potential microcracks in the battery cell 111, ensuring a high product yield.

[0072] It should be noted that, unless otherwise specified in this disclosure, the bus component 12 can represent either the first bus component or the second bus component.

[0073] The busbar assembly 12 and the connecting section 1122 can be electrically connected by welding. In this way, after the busbar assembly 12 and the welding strip 112 are welded, the busbar assembly 12 will not block the weld joint between the busbar assembly 12 and the connecting section 1122. The operator can directly check the welding effect between the welding strip 112 and the busbar assembly 12 on the backlight surface of the battery cell 111, so as to ensure the reliability of the busbar assembly 12 and the welding strip 112 after welding and ensure the yield rate of the product.

[0074] Based on the above structure, the first busbar assembly is positioned between the connecting section 1122 and the battery cell 111 of two adjacent back-contact battery strings 11. This avoids obstructing the welding position after the first busbar assembly is welded to the connecting section 1122, allowing operators to confirm the welding effect of the busbar assembly 12 and the connecting section 1122, and preventing welding defects such as incomplete or missed welds. Simultaneously, the second busbar assembly is connected to the back-contact battery string located at the edge. The projection of the second busbar assembly in the thickness direction of the battery cell 1 can be within the range of the battery cell 111. This rationally utilizes the space between the battery cell 111 and the connecting section 1122, preventing the busbar assembly 12 from protruding from the battery cell 111. The busbar assembly 12 does not need to be bent after welding to the solder strip 112, avoiding potential microcracks in the battery cell 111. The battery unit 1 in this disclosure improves the way the current collector 12 is set, allowing operators to confirm the welding effect of the current collector 12 and the connecting section 1122 after welding, and can avoid potential microcracks in the battery cell 111, thus ensuring the product yield.

[0075] In some possible implementations, the busbar assembly 12 may include a busbar 121 and a separator 122 stacked in the thickness direction of the battery cell 1. The stacked busbar 121 and separator 122 are in surface contact, which avoids gaps between the busbar 121 and separator 122, avoids increasing the thickness of the busbar assembly 12, makes the busbar assembly 12 flatter, and makes it easier to place the busbar assembly 12 between the connecting section 1122 and the battery cell 111.

[0076] Busbar 121 can be connected to connecting section 1122. This connection refers to the electrical connection between busbar 121 and connecting section 1122. For example, the electrical connection between busbar 121 and connecting section 1122 can be achieved through welding, allowing the isolation strip 122 to be positioned between the battery cell 111 and the busbar 121. In this way, the isolation strip 122 provides electrical isolation between the busbar 121 and the battery cell 111, preventing short circuits caused by conductive contact between the busbar 121 and the battery cell 111, and ensuring the safe use of battery cell 1.

[0077] In some possible implementations, refer to Figure 4In the first direction, the spacing L1 between two adjacent battery cells 111 can satisfy: 0.5mm ≤ L1 ≤ 8mm. For the first busbar assembly, the spacing between two adjacent battery cells 111 ensures sufficient space when the first busbar assembly moves between the connecting section 1122 and the battery cell 111. If the spacing L1 is too small, the first busbar assembly is prone to colliding with the connecting section 1122 or the battery cell 111 during the process of the first busbar assembly and the back contact battery string 11 approaching each other. If the spacing L1 is too large, it will increase the size and volume of the battery cell 1. In this disclosure, the spacing L1 can be selected according to the adaptability of the battery cell 1 specifications, and this disclosure does not make specific limitations.

[0078] On the other hand, this disclosure also provides a processing apparatus for preparing the battery cell 1 of any one of the above, referring to... Figure 6 and Figure 7 , Figure 6 This is a schematic diagram of the structure of the first welding device in the processing equipment disclosed in the embodiments of this application. Figure 7 This is a schematic diagram of the structure of the second welding device in the processing equipment disclosed in the embodiments of this application. It is understood that the processing equipment of this disclosure can be used to connect both the first busbar assembly and the back contact battery string 11, and also to connect the second busbar assembly and the back contact battery string 11. To facilitate the description of the positional relationships and to provide a clearer explanation of the processing equipment, this disclosure refers to the process of using the processing equipment to connect the second busbar assembly and the back contact battery string 11, and takes the example that the back contact battery string 11, the battery cells 111, and the busbar assembly 12 all need to be horizontally positioned during processing, i.e., the battery unit 1 needs to be processed horizontally.

[0079] The processing equipment includes a first welding device 2, a second welding device 3, and a third welding fixture 33. The first welding device 2 includes a first welding platform 21 and a first welding fixture 22. The first welding platform 21 is used for welding the busbar 121 and the separator 122, and the first welding fixture 22 is used to fix the busbar 121 and the separator 122. The second welding device 3 includes a second welding platform 31 and a second welding fixture 32. The second welding platform 31 is used for welding the busbar 121 and the connecting section 1122, and the second welding fixture 32 is used to fix the busbar assembly 12 and the connecting section 1122. The third welding fixture 33 is used to fix the back contact battery string 11.

[0080] The first welding device 2 can be referred to Figure 6The first welding fixture 22 can be used to fix the busbar 121 and the isolation strip 122 to prevent them from shifting. The busbar 121 and the isolation strip 122, which are not yet connected, are fixed on the first welding platform 21. The first welding platform 21 can weld the busbar 121 and the isolation strip 122 while they are fixed.

[0081] During the processing, the isolation strip 122 and the busbar 121 need to be moved to the first welding platform 21 respectively. In some embodiments, the first welding fixture 22 can be connected to the first moving device. The first moving device can drive the first welding fixture 22 to move horizontally or vertically. In this way, the first welding fixture 22 can be moved to the loading position of the isolation strip 122 or the busbar 121 by the first moving device to fix the isolation strip 122 or the busbar 121. Then, the isolation strip 122 or the busbar 121 can be moved to the first welding platform 21 by the first moving device and the first welding fixture 22 for welding.

[0082] The second welding device 3 can be referred to Figure 7 As described above, before the busbar assembly 12 is installed, the connecting segment 1122 can be the raised portion of the solder strip 112. During welding, the second welding fixture 32 not only fixes the busbar assembly 12, securing it between the connecting segment 1122 and the battery cell 111, but also fixes the connecting segment 1122. The second welding fixture 32 can abut against the raised connecting segment 1122 to prevent it from warping and ensure contact between the connecting segment 1122 and the busbar 121 during welding. The second welding platform 31 can weld the busbar 121 in the busbar assembly 12 to the connecting segment 1122 while the busbar assembly 12 and the back contact battery string 11 are fixed.

[0083] Reference Figure 7 The length of the second welding platform 31 can be relatively long, so that multiple processing devices can share one second welding platform 31. Multiple second welding fixtures 32 of multiple processing devices can be arranged in the extension direction of the second welding platform 31.

[0084] The first welding platform 21 includes a first welding block 211, a first platform body 212, and a fixing block 213. The first welding block 211 is disposed on the first platform body 212. The first platform body 212 has a first induction coil located on both sides of the first welding block 211. The first induction coil is used to heat the first welding block 211. The fixing block 213 is disposed at the end of the first platform body 212. The fixing block 213 has a first adsorption hole 2131. The first adsorption hole 2131 has positioning pins 2132 on both sides for abutting against the edge of the busbar assembly 12.

[0085] The first welding fixture 22 includes a first suction rod 221, a first pressure rod 222, a first bracket 223, and a second bracket 224. The first suction rod 221 is provided with a first suction cup 2211 at its end, and the first pressure rod 222 is provided with a pressure plate 2221 at its end. The pressure plate 2221 has a clearance hole 2222 for avoiding the first suction rod 221. The first bracket 223 is connected to the first suction rod 221, and the second bracket 224 is connected to the first pressure rod 222 through a first elastic member. The first elastic member is configured to compress when the pressure plate 2221 abuts against the busbar assembly 12. The first bracket 223 and the second bracket 224 are both capable of moving in a direction perpendicular to the busbar assembly 12.

[0086] The second welding platform 31 includes a second welding block 311 and a second platform body 312. The second welding block 311 is used for welding the busbar 121 and the connecting section 1122. The second platform body 312 has a second adsorption hole 3121 for adsorbing the busbar assembly 12. The second welding block 311 is disposed on the second platform body 312. The second platform body 312 is embedded with second induction coils located on both sides of the second welding block 311. The second induction coils are used to heat the second welding block 311.

[0087] The second welding fixture 32 includes a second suction rod 321, a second pressure rod 322, a third bracket 323, and a fourth bracket 324. The second suction rod 321 is provided with a second suction cup 3211 at its end, and the second pressure rod 322 is provided with a pressure head 3221 at its end. The third bracket 323 is connected to the second suction rod 321, and the fourth bracket 324 is connected to the second pressure rod 322 through a second elastic member. The second elastic member is configured to compress when the pressure head 3221 abuts against the manifold assembly 12. Both the third bracket 323 and the fourth bracket 324 are capable of moving in a direction perpendicular to the manifold assembly 12.

[0088] In some possible implementations, the second welding fixture 32 can be connected to the second moving device, and the third welding fixture 33 can be connected to the third moving device. Thus, driven by the second moving device, the second welding fixture 32 can move the busbar assembly 12, and driven by the third moving device, the third welding fixture 33 can move the back-contact battery string 11. During processing, the second welding fixture 32 and the third welding fixture 33 can bring the busbar assembly 12 and the back-contact battery string 11 closer together, allowing the busbar assembly 12 to be moved between the connecting section 1122 and the battery cell 111, where it is then welded via the second welding platform 31.

[0089] In some possible implementations, refer to Figure 7The third welding fixture 33 can be a frame with a Bernoulli suction cup. The Bernoulli suction cup is a non-contact adsorption tool designed based on Bernoulli's principle, which can prevent the third welding fixture 33 from contacting the back contact battery string 11, thus protecting the surface of the back contact battery sheet 111. In some embodiments, refer to... Figure 7 Bernoulli suction cups can be provided at both ends of the frame in the first direction to ensure the flatness of the back contact battery string 11 when the third welding fixture 33 moves and fixes the back contact battery string 11, and to ensure the position of the connecting section 1122.

[0090] In some possible implementations, refer to Figure 6 and Figure 8 , Figure 8 yes Figure 6 Enlarged view of part A. The first welding platform 21 may include a first welding block 211, a first platform body 212, and a fixing block 213. The busbar assembly 12 is disposed on the first welding block 211, which is disposed on the first platform body 212. The first platform body 212 has embedded first induction coils located on both sides of the first welding block 211. The first induction coils are used to heat the first welding block 211. The first welding block 211 may be made of a magnetic material. When a high-frequency alternating current is passed through the first induction coil, the first induction coil can generate a magnetic field, inducing eddy currents in the first welding block 211. Through Joule heating, the surface of the first welding block 211 will heat up rapidly, realizing the welding between the busbar 121 and the isolation strip 122.

[0091] The fixing block 213 can be disposed at the end of the first platform body 212, as described in some embodiments, referring to... Figure 6 The fixing blocks 213 can be disposed at both ends of the first platform body 212. The fixing blocks 213 can have first adsorption holes 2131, which can communicate with an external gas source. The gas flow generates adsorption force, thus achieving a fixing effect. Compared to other fixing methods, the gas adsorption design is less prone to damage during fixing. The first adsorption holes 2131 have positioning pins 2132 on both sides for abutting against the edges of the isolation strip 122 and the manifold 121. The positioning pins 2132 prevent displacement of the isolation strip 122 and the manifold 121.

[0092] In some possible implementations, the first welding fixture 22 may include a first adsorption rod 221, a first pressure rod 222, a first support 223, and a second support 224.

[0093] The first suction rod 221 may be provided with a first suction cup 2211 at its end. The first suction cup 2211 may be used to fix the isolation strip 122, the manifold 121, or the manifold assembly 12. The first pressure rod 222 may be provided with a pressure plate 2221 at its end, as shown in the figure. Figure 6and Figure 7 The extension direction of the pressure plate 2221 can be the same as the extension direction of the busbar assembly 12. During the welding process of the busbar 121 and the isolation strip 122, the pressure plate 2221 can press on the busbar 121 and the isolation strip 122 to ensure that the busbar 121 and the isolation strip 122 are in surface contact, avoiding gaps between the busbar 121 and the isolation strip 122. The pressure plate 2221 has a clearance hole 2222 for avoiding the first adsorption rod 221, preventing collision between the first adsorption rod 221 and the pressure plate 2221. The second bracket 224 is connected to the first pressure rod 222. The first bracket 223 is connected to the first adsorption rod 221. The first moving device can be connected to the first bracket 223 and the second bracket 224 respectively. The first moving device can simultaneously drive the first bracket 223 and the second bracket 224 to realize the movement of the position of the first welding fixture 22.

[0094] In some embodiments, multiple first adsorption rods 221 and first pressure rods 222 may be provided; for example, two each of the first adsorption rods 221 and first pressure rods 222 may be provided. The number of first adsorption rods 221 and first pressure rods 222 can be adaptively designed according to the length of the isolation strip 122 and the manifold 121, and this disclosure does not specifically limit it. (Refer to...) Figure 6 In some embodiments, the first support 223 may include a crossbeam and longitudinal beams disposed on the crossbeam. Taking the example of having two first adsorption rods 221, the two longitudinal beams are spaced apart, and the first adsorption rods 221 are disposed at the ends of the longitudinal beams. The second support 224 may also adopt the same design.

[0095] In some embodiments, both the first bracket 223 and the second bracket 224 are movable in a direction perpendicular to the manifold 12. When the manifold 12 is horizontally positioned, this means that both the first bracket 223 and the second bracket 224 are movable in the vertical direction. The second bracket 224 can be connected to the first pressure rod 222 via a first elastic member, which is configured to compress when the pressure plate 2221 abuts against the manifold 12. In some embodiments, the first bracket 223 and the second bracket 224 can be connected to the first moving device via cylinders having telescopic rods extending in the vertical direction. When the telescopic rods of the cylinders extend or retract, they can drive the first bracket 223 and the second bracket 224 to move in a direction perpendicular to the manifold 12.

[0096] Taking the placement of the busbar 121 onto the first welding block 211, where the isolation strip 122 has already been placed on it, as an example, the first welding clamp 22 is used to move the first welding clamp 22 above the isolation strip 122. The first support 223 is then lowered until the busbar 121 contacts the isolation strip 122. The second support 224 can then move downwards until the pressure plate 2221 contacts the busbar 121. At this point, the first suction rod 221 can be controlled to stop fixing the busbar 121. After the pressure plate 2221 contacts the busbar 121, the second support 224 can continue to descend. At this time, the first elastic element will compress and generate force. This force is used to press the pressure plate 2221 onto the busbar 121 and the isolation strip 122, ensuring surface contact between them and preventing gaps. When sufficient pressure is generated, the second support 224 stops descending. The design of the first elastic element prevents excessive pressure from the pressure plate 2221, which could damage the busbar 121 and the isolation strip 122. The first elastic element also acts as a buffer, accommodating vibrations caused by deformation of the busbar 121 and the isolation strip 122 during the welding process.

[0097] In some possible implementations, the second welding platform 31 may include a second welding block 311 and a second platform body 312. The second welding block 311 can be used for welding the busbar 121 and the connecting section 1122. During welding, the battery cell 111 can be placed on the second welding block 311, the busbar assembly 12 can be placed on the battery cell 111, and the connecting section 1122 can be disposed on the busbar 121. The heat from the second welding block 311 passes through the battery cell 111 to weld the busbar 121 and the connecting section 1122.

[0098] The second welding block 311 is disposed on the second platform body 312. The second platform body 312 is embedded with second induction coils located on both sides of the second welding block 311. The second induction coils are used to heat the second welding block 311. The second welding block 311 can be made of magnetic material. When a high-frequency alternating current is passed through the second induction coil, the second induction coil can generate a magnetic field, which will induce eddy currents in the second welding block 311. Through Joule heating, the surface of the second welding block 311 will heat up rapidly, realizing the welding between the busbar 121 and the connecting section 1122.

[0099] The second platform body 312 may have a second adsorption hole 3121 for adsorbing the manifold assembly 12. The second adsorption hole 3121 can be connected to an external gas source, and the adsorption force is generated through the flow of gas to play a fixing role. Compared with other fixing methods, the gas adsorption design is less likely to cause damage to the manifold assembly 12 during fixing.

[0100] After the busbar 121 and the isolation bar 122 are welded to form the busbar assembly 12, the busbar assembly 12 can be placed on the second platform body 312 using a handling device, and then moved to a designated position above the second welding block 311 using the second welding fixture 32.

[0101] In some possible implementations, the second welding fixture 32 may include a second suction rod 321, a second pressure rod 322, a third support 323, and a fourth support 324. The third support 323 is connected to the second suction rod 321, and the fourth support 324 may be connected to the second pressure rod 322. A second suction cup 3211 may be provided at the end of the second suction rod 321, which can fix the manifold assembly 12 by adsorption. A pressure head 3221 may be provided at the end of the second pressure rod 322, and the pressure head 3221 may have a flat surface capable of abutting against the connecting section 1122 and the manifold 121. During welding, the pressure head 3221 can be used to abut against the raised connecting section 1122 to prevent the connecting section 1122 from warping and ensure contact between the connecting section 1122 and the manifold 121 during welding.

[0102] In some embodiments, multiple second adsorption rods 321 and second pressure rods 322 may be provided. The number of second adsorption rods 321 and second pressure rods 322 can be adapted to the length of the busbar assembly 12, and this disclosure does not specifically limit it.

[0103] Reference Figures 9 to 13 , Figure 9 This is a partial structural schematic diagram of the second welding device in the processing equipment disclosed in the embodiments of this application from one perspective. Figure 10 This is a partial structural schematic diagram of the second welding device in the processing equipment disclosed in the embodiments of this application from another perspective. Figure 11 yes Figure 10 Enlarged view of section B. Figure 12 This is a partial structural schematic diagram of the second welding device in the processing equipment disclosed in the embodiments of this application from one perspective, wherein the busbar assembly is connected to the connecting section. Figure 13 yes Figure 12 Enlarged view of part C. In some embodiments, the third support 323 may include two square rods, which may be connected to each other or integrally formed, so that the third support 323 is constructed as an L-shaped cross-section. The first adsorption rod 221 may be inserted and fixed in one of the square rods. The fourth support 324 may adopt the same design as the third support 323.

[0104] In some embodiments, the first suction rod 221 and the second suction rod 321 can be connected to an external air source. Airflow causes the first suction cup 2211 and the second suction cup 3211 to generate an adsorption force, enabling them to perform adsorption and fixation. In some embodiments, the first elastic element and the second elastic element can be springs.

[0105] It should be noted that in this disclosure, the first adsorption rod 221, the second adsorption rod 321, the first support 223, the second support 224, the third support 323, and the fourth support 324 can adopt the structure described above, or other feasible implementation methods. For example, without damaging the manifold 121 and the isolation strip 122, the first adsorption rod 221 can adopt other contact-type adsorption structures. When there are other structures around the processing equipment that need to be avoided, the third support 323 and the fourth support 324 can also adopt other structures with clearance space. In this regard, this disclosure does not make specific limitations.

[0106] In some embodiments, both the third support 323 and the fourth support 324 are movable in a direction perpendicular to the manifold 12. The fourth support 324 can be connected to the second pressure rod 322 via a second elastic member, which can be configured to compress when the pressure head 3221 abuts against the manifold 12.

[0107] Taking the placement of the combiner assembly 12 on the battery cell 111 as an example: The third support 323 is lowered until the combiner assembly 12 contacts the battery cell 111. Then, the fourth support 324 can move downwards. The pressure head 3221 first contacts the connecting section 1122, and then contacts the combiner assembly 12. At this point, the second suction rod 321 can be controlled to stop fixing the combiner assembly 12. After the pressure head 3221 abuts against the combiner assembly 12, the fourth support 324 can continue to descend. At this time, the second elastic element will compress and generate force. The force generated by the second elastic element can be used to press the pressure head 3221 against the combiner assembly 12 and the connecting section 1122, preventing gaps from forming between the combiner assembly 12 and the connecting section 1122. When the generated pressure is sufficient, the fourth support 324 stops descending. The design of the second elastic element can prevent the pressure head 3221 from generating excessive pressure, which could damage the combiner assembly 12 and the connecting section 1122. The second elastic element can also act as a buffer to accommodate the vibrations caused by deformation of the busbar assembly 12 and the connecting section 1122 during the welding process.

[0108] In some possible implementations, in the first direction, the length L2 of the pressure head 3221 and the extension length L3 of the busbar assembly 12 can satisfy: L2 - L3 > 4 mm. The length L2 of the pressure head 3221 and the extension length L3 of the busbar assembly 12 can be referenced... Figure 11This ensures that the pressure head 3221 has sufficient contact area with the busbar assembly 12, guaranteeing that the pressure head 3221 fully covers the busbar assembly 12 and the connecting section 1122, thus ensuring the welding effect between the busbar assembly 12 and the connecting section 1122. The extension length L3 of the busbar assembly 12 in the first direction can be understood as the width of the busbar assembly 12.

[0109] As described above, during the manufacturing process of the back contact battery string 11, the end of the solder strip 112 near the edge of the back contact battery string 11 may be raised slightly. This raised portion of the solder strip 112 can be understood as the connecting segment 1122. In some possible embodiments, the processing equipment may include a bending device for bending the connecting segment 1122, such that the included angle α between the connecting segment 1122 and the battery cell 111 satisfies: 30° ≤ α ≤ 60°. The included angle α can be referenced... Figure 11 If the included angle α is too small, there will not be enough space between the connecting segment 1122 and the battery cell 111 to accommodate the busbar assembly 12. If the included angle α is too small, the connecting segment 1122 will tend to be vertical, and when the pressure head 3221 abuts against the connecting segment 1122, it is easy for the connecting segment 1122 to bend instead of connecting to the busbar 121. At the same time, the setting of the bending device also ensures that the angle of each connecting segment 1122 is the same.

[0110] In this disclosure, the specific structure of the bending device is not limited. The bending device may include two bending plates, and the connecting section 1122 is clamped between the two bending plates. When the bending plates rotate, they drive the connecting section 1122 to rotate, thereby adjusting the included angle α.

[0111] The following will describe in detail the process of using the processing equipment in this disclosure, taking into account the above content and the accompanying drawings.

[0112] First, the busbar 121 and the separator 122 of specific lengths need to be processed by the unwinding mechanism and the cutting mechanism. The first welding fixture 22 is moved to the loading position of the separator 122 by the first moving device and picks up the separator 122. Then, the first welding fixture 22 is moved above the first welding block 211. At this point, it can be referenced... Figure 6 Then, the first bracket 223 descends via a cylinder until the isolation strip 122 contacts the first welding block 211. The first adsorption hole 2131 is activated, the first adsorption rod 221 is closed, the first adsorption rod 221 disengages from the isolation strip 122, and the first bracket 223 rises and resets.

[0113] The first welding fixture 22 is moved to the loading position of the manifold 121 and picks up the manifold 121. Then, the first welding fixture 22 is moved above the separator 122. The first support 223 is lowered by a cylinder until the manifold 121 contacts the separator 122. The second support 224 is lowered by a cylinder, driving the first pressure rod 222 and the pressure plate 2221 to descend until the pressure plate 2221 contacts the manifold 121. The first suction rod 221 is then closed, and the first suction rod 221 disengages from the manifold 121. The second support 224 continues to descend until the pressure plate 2221 presses against the manifold 121 with appropriate pressure, at which point the second support 224 stops descending.

[0114] A current is passed through the first induction coil, and the first welding block 211 heats up, welding the busbar 121 and the isolation bar 122 to form the busbar assembly 12. The welding time and current can be adjusted according to the actual welding requirements.

[0115] After the busbar 121 and the isolation strip 122 are welded, the first adsorption hole 2131 is closed, and the first welding fixture 22 is moved away from the busbar assembly 12. The busbar assembly 12 is then moved to the position with the second adsorption hole 3121 on the second welding platform 31 by other handling structures. The second adsorption hole 3121 is then activated.

[0116] The second welding fixture 32 is moved by the second moving device until the suction cup of the second suction rod 321 contacts the manifold assembly 12. Then, the second suction rod 321 is activated and the second suction hole 3121 is closed. The second welding fixture 32 moves the manifold assembly 12 above the second welding block 311 by the second moving device.

[0117] Simultaneously, the included angle α between the connecting section 1122 and the battery cell 111 is adjusted using a bending device, ensuring that α satisfies the condition: 30° ≤ α ≤ 60°. Then, the third welding fixture 33 picks up and fixes the back-contact battery strings 11, and the two back-contact battery strings 11 are moved to both sides of the second welding block 311 via a third moving device. During this process, the position of the back-contact battery strings 11 can be detected by a camera and sensors. If there is a deviation in the position of the back-contact battery strings 11, it is calibrated by the third moving device, i.e., the position of the third welding fixture 33 is adjusted by the third moving device.

[0118] After the positions of the two back-contact battery strings 11 are stabilized, the third moving device continues to adjust the positions of the back-contact battery strings 11, bringing them closer together until the two battery cells 111 respectively contact the second welding block 311. During the movement of the two back-contact battery strings 11, the space between the connecting section 1122 and the battery cells 111 gradually surrounds the busbar assembly 12 fixed by the second welding fixture 32. When the two battery cells 111 respectively contact the second welding block 311, the busbar assembly 12 is contained within the space between the connecting section 1122 and the battery cells 111, and the distance L1 between two adjacent battery strings satisfies: 0.5mm ≤ L1 ≤ 8mm. At this time, the state of the second welding device 3 can be referred to... Figures 9 to 11 .

[0119] Then, the third support 323 can be controlled to descend via a cylinder, placing the combiner assembly 12 on the battery cell 111. Once the combiner assembly 12 contacts the battery cell 111, the third support 323 stops descending. The fourth support 324 can then be controlled to descend via a cylinder, causing the pressure head 3221 to descend until it contacts the combiner assembly 12. This contact means that the pressure head 3221 simultaneously presses against both the connecting section 1122 and the combiner assembly 12, flattening the warped connecting section 1122. Then, the second suction rod 321 is closed. The fourth support 324 continues to descend until the pressure head 3221 can provide suitable pressure to the combiner assembly 12 and the connecting section 1122, at which point the fourth support 324 stops descending. At this point, the state of the second welding device 3 can be referenced... Figure 12 and Figure 13 .

[0120] A current is passed through the second induction coil, causing the second welding block 311 to heat up and weld the busbar 121 and the connecting section 1122 together, thus completing the fabrication of the battery unit 1. The welding time and current can be adjusted according to actual welding needs.

[0121] After the battery unit 1 is fabricated, the second welding fixture 32 rises, and the battery unit 1 is transferred via a transport device. It should be noted that the moving device capable of moving and lifting the fixture is a technology well-known to those skilled in the art. Therefore, this disclosure does not specifically limit the specific structure of the aforementioned moving devices. The specific structure, size, specifications, power, and other parameters of the moving devices can be adaptively selected according to the corresponding working conditions, and this disclosure does not impose specific limitations.

[0122] The preferred embodiments of this disclosure have been described in detail above with reference to the accompanying drawings. However, this disclosure is not limited to the specific details of the above embodiments. Within the scope of the technical concept of this disclosure, various simple modifications can be made to the technical solutions of this disclosure, and these simple modifications all fall within the protection scope of this disclosure.

[0123] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, this disclosure will not describe the various possible combinations separately.

[0124] Furthermore, various different embodiments of this disclosure can be combined in any way, as long as they do not violate the spirit of this disclosure, they should also be regarded as the content disclosed in this disclosure.

Claims

1. A processing equipment, characterized in that, The processing equipment is used to process battery cells, the battery cell including a busbar assembly and a plurality of back-contact battery strings arranged in a first direction, each of the back-contact battery strings having a battery cell and a solder strip extending along the first direction, the solder strip having a main body segment and a connecting segment, the main body segment being disposed on the battery cell, and the connecting segment being connected to the main body segment, the busbar assembly including a busbar strip and a separator strip stacked in the thickness direction of the battery cell, the processing equipment including: A first welding apparatus includes a first welding platform and a first welding fixture. The first welding platform is used for welding the busbar and the isolation strip, and the first welding fixture fixes the busbar and the isolation strip. The first welding fixture includes: The first suction rod has a first suction cup at its end; The first pressure rod has a pressure plate at its end, and the pressure plate has a clearance hole for avoiding the first adsorption rod; The first support is connected to the first adsorption rod, and The second bracket is connected to the first pressure rod via a first elastic element, the first elastic element being configured to compress when the pressure plate abuts against the busbar assembly. Both the first and second brackets are capable of moving in a direction perpendicular to the busbar assembly. The second welding device includes a second welding platform and a second welding fixture. The second welding platform is used for welding the busbar and the connecting section, and the second welding fixture is used for fixing the busbar assembly and the connecting section. The third welding fixture is used to fix the back contact battery string.

2. The processing equipment according to claim 1, characterized in that, The bus assembly includes a first bus assembly and a second bus assembly. The first busbar assembly is connected to two adjacent back-contact battery strings. In the thickness direction of the battery cells, the connecting segments of two adjacent back-contact battery strings are all connected to the top surface of the first busbar assembly, and the battery cells are all located on the bottom surface of the first busbar assembly. The second busbar assembly is connected to the back contact battery string located at the edge, and the projection of the second busbar assembly in the thickness direction of the battery cell is within the range of the battery cell.

3. The processing equipment according to claim 1, characterized in that, The busbar assembly includes a busbar and a separator strip stacked in the thickness direction of the battery cell. The busbar is connected to the connecting segment, and the separator strip is disposed between the battery cell and the busbar.

4. The processing equipment according to claim 1, characterized in that, In the first direction, the spacing L1 between two adjacent battery cells satisfies: 0.5mm ≤ L1 ≤ 8mm.

5. The processing equipment according to claim 1, characterized in that, The first welding platform includes: The first welding block, wherein the bus assembly is disposed on the first welding block; A first platform body, wherein the first welding block is disposed on the first platform body, and the first platform body contains embedded first induction coils located on both sides of the first welding block, the first induction coils being used to heat the first welding block, and A fixing block is disposed at the end of the first platform body. The fixing block has a first adsorption hole, and positioning pins on both sides of the first adsorption hole are used to abut against the edge of the busbar assembly.

6. The processing equipment according to claim 1, characterized in that, The second welding platform includes: The second welding block is used for welding the busbar and the connecting section, and The second platform body has a second adsorption hole for adsorbing the busbar assembly. The second welding block is disposed on the second platform body. The second platform body has embedded second induction coils located on both sides of the second welding block. The second induction coils are used to heat the second welding block.

7. The processing equipment according to claim 1, characterized in that, The second welding fixture includes: The second suction rod has a second suction cup at its end; The second pressure rod has a pressure head at its end; The third support is connected to the second adsorption rod, and The fourth bracket is connected to the second pressure rod via a second elastic element, the second elastic element being configured to compress when the pressure head abuts against the manifold assembly. Both the third bracket and the fourth bracket are capable of moving in a direction perpendicular to the busbar assembly.

8. The processing equipment according to claim 7, characterized in that, In the first direction, the length L2 of the pressure head and the extension length L3 of the busbar assembly satisfy: L2-L3>4mm.

9. The processing equipment according to claim 1, characterized in that, The processing equipment includes a bending device for bending the connecting segment so that the included angle α between the connecting segment and the battery cell satisfies: 30°≤a≤60°.

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