Solder strip and die
By designing the welding tape structure and mold rolling to form the welding tape, the problem of cell chip lobes and fragments caused by welding tape stretching is solved, and the stable connection and protection of the cell chips are achieved.
Patent Information
- Application Number
- CN202422201063.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-06
- Publication Date
- 2025-07-08
- Estimated Expiration
- 2034-09-06
AI Technical Summary
现有技术中,焊带在拉伸过程中导致电池片边缘与焊带接触,导致电池片出现裂片和碎片现象。
A welding tape structure is designed, including a first welding section, a second welding section and a connecting section, the connecting section is arranged at the welding section, and grooves are provided at the connecting section to suspend the edge of the battery cell, and a welding tape is formed in conjunction with a mold rolling to ensure that the edge of the battery cell is suspended and avoid direct contact.
During the lamination process, the connecting section acts as a buffering function to prevent the edge of the battery cell from contacting the welding tape, prevent the occurrence of cell chip lobes and debris, and improve the structural strength and stability of the welding tape.
Smart Images
Figure CN223080407U_ABST
Abstract
Description
Technical Field
[0001] This application belongs to the technical field of photovoltaic equipment, and particularly relates to a solder ribbon and a die. Background Art
[0002] In the prior art, when a plurality of solar cells are connected in series to form a cell string or in the subsequent lamination process, the solder ribbon will be stretched, and the edges of the solar cells will make point contact or line contact with the solder ribbon, which may cause the solar cells to crack and break. Utility Model Content
[0003] The purpose of the embodiments of this application is to provide a solder ribbon and a die.
[0004] According to the first aspect of the embodiments of this application, a solder ribbon is provided, including:
[0005] A first welding section, the first welding section includes a first connection end face, and the first connection end face is used to connect a solar cell;
[0006] A second welding section, the second welding section is spaced from the first welding section in a first direction, the second welding section includes a second connection end face, and the second connection end face is used to connect a solar cell;
[0007] A connection section, the connection section connects the first welding section and the second welding section;
[0008] The first connection end face includes a first connection portion and a first groove, the first groove is closer to the connection section than the first connection portion, and one end of the solar cell close to the connection section floats in the first groove; and / or, the second connection end face includes a second connection portion and a second groove, the second groove is closer to the connection section than the second connection portion, and one end of the solar cell close to the connection section floats in the second groove.
[0009] Optionally, the first groove is connected to one end of the connection section, and the second groove is connected to the other end of the connection section.
[0010] Optionally, an extension line of the connection section and an extension line of the first connection end face form a first included angle, and the first included angle is an obtuse angle.
[0011] Optionally, an extension line of the connection section and an extension line of the second connection end face form a second included angle, and the second included angle is an obtuse angle.
[0012] According to the second aspect of the embodiments of this application, a die is provided, and the die is used for rolling and forming the above-mentioned solder ribbon. The die includes:
[0013] The first sub-mold, the first sub-mold includes a first rolling end face, the first rolling end face includes a first rolling area, a second rolling area and a third rolling area arranged in sequence along a second direction, in a first direction, the first rolling area and the third rolling area are spaced apart, and the second rolling area connects the first rolling area and the third rolling area;
[0014] The second sub-mold, the second sub-mold includes a second rolling end face, the second rolling end face faces the first rolling end face, the second rolling end face includes a fourth rolling area, a fifth rolling area and a sixth rolling area arranged in sequence along the second direction, in the first direction, the fourth rolling area and the sixth rolling area are spaced apart, and the fifth rolling area connects the fourth rolling area and the sixth rolling area;
[0015] The first rolling area and the fourth rolling area are rolled to form the first groove, the second rolling area and the fifth rolling area are rolled to form the connecting section, and the third rolling area and the sixth rolling area are rolled to form the second groove;
[0016] The first direction intersects with the second direction.
[0017] Optionally, the first rolling area and the third rolling area are spaced apart in the second direction;
[0018] The fourth rolling area and the sixth rolling area are spaced apart in the second direction.
[0019] Optionally, in the first direction, the first rolling area protrudes from the third rolling area in the first direction;
[0020] The sixth rolling area protrudes from the fourth rolling area in the first direction.
[0021] Optionally, the second rolling end face is provided with a first protrusion and a second protrusion, the first protrusion and the second protrusion are spaced apart along a third direction, the sixth rolling area is located between the first protrusion and the second protrusion, and the first protrusion and the second protrusion protrude from the sixth rolling area in the first direction;
[0022] The first direction intersects with the third direction, and the second direction intersects with the third direction.
[0023] Optionally, the second rolling end face is further provided with a seventh rolling area, the seventh rolling area is located on a side of the fourth rolling area away from the fifth rolling area in the second direction, and a part of a side of the first rolling area away from the second rolling area extends to the seventh rolling area; the fourth rolling area protrudes from the seventh rolling area in the first direction.
[0024] Optionally, an eighth rolling area is further provided on the second rolling end face. The eighth rolling area is located on the side of the sixth rolling area away from the fifth rolling area in the second direction, and a part of the side of the third rolling area away from the second rolling area extends to the eighth rolling area; the sixth rolling area protrudes from the eighth rolling area in the first direction.
[0025] One technical effect of the embodiment of the present application is that during the lamination process of the battery cell, the solder ribbon is stretched, and the connecting section can play a buffering role. The edge of the battery cell close to the connecting section floats at the first groove or the second groove, so as to avoid the phenomenon that the edge of the battery cell is directly in contact with the solder ribbon and is squeezed to form cracks and fragments.
[0026] Other features and advantages of the present application will become clear through the following detailed description of the exemplary embodiments of the present application with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS
[0027] The drawings incorporated in and constituting a part of this specification illustrate embodiments of the present application and, together with the description, are used to explain the principles of the present application.
[0028] Figure 1 It is a schematic structural diagram of the solder ribbon in the embodiment of the present application;
[0029] Figure 2 It is a schematic connection structure diagram of the solder ribbon and the battery cell in the embodiment of the present application;
[0030] Figure 3 It is a schematic connection structure diagram of the solder ribbon and the battery cell in the embodiment of the present application;
[0031] Figure 4 It is a schematic structural diagram of the mold in the embodiment of the present application;
[0032] Figure 5 It is a schematic structural diagram of the mold in the embodiment of the present application;
[0033] Figure 6 It is a schematic structural diagram of the first sub-mold in the embodiment of the present application;
[0034] Figure 7 It is a schematic structural diagram of the second sub-mold in the embodiment of the present application;
[0035] Figure 8 It is a schematic structural diagram of the second sub-mold in the embodiment of the present application;
[0036] Figure 9 It is a schematic structural diagram of the mold in the embodiment of the present application;
[0037] Figure 10 For Figure 9The sectional view taken along line A-A in [].
[0038] Description of reference numerals: First welding section 1; First connecting end face 11; First connecting portion 111; First groove 112; First strengthening portion 113; Second welding section 2; Second connecting end face 21; Second connecting portion 211; Second groove 212; Second strengthening portion 213; Connecting section 3; First included angle a; Second included angle b; First sub-mold 4; First rolling end face 41; First rolling area 411; Second rolling area 412; Third rolling area 413; Second sub-mold 5; Second rolling end face 51; Fourth rolling area 511; Fifth rolling area 512; Sixth rolling area 513; Seventh rolling area 514; Eighth rolling area 515; First protrusion 516; Second protrusion 517; Welding strip 100; Mold 200; Battery chip 300. Detailed implementation manners
[0039] Now, various exemplary embodiments of the present application will be described in detail with reference to the accompanying drawings. It should be noted that: Unless otherwise specifically stated, the relative arrangements of components and steps set forth in these embodiments, numerical expressions and values do not limit the scope of the present application.
[0040] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way a limitation on the present application or its application or use.
[0041] Technologies, methods and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the said technologies, methods and devices should be regarded as part of the specification.
[0042] In all the examples shown and discussed here, any specific value should be construed as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values.
[0043] It should be noted that: Similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.
[0044] First, it should be noted that for the first direction, second direction and third direction in the embodiments of the present application, please refer to the directions marked in Figure 1 , Figure 2 , Figure 3 , Figure 5 and Figure 8 . Among them, the first direction, second direction and third direction intersect pairwise.
[0045] Such as Figures 1 - 3As shown, according to the first aspect of the embodiments of the present application, a solder strip 100 is provided, which includes a first welding section 1, a second welding section 2 and a connecting section 3; the first welding section 1 includes a first connecting end face 11, and the first connecting end face 11 is used to connect the solar cell 300; the second welding section 2 is spaced from the first welding section 1 in a first direction, the second welding section 2 includes a second connecting end face 21, and the second connecting end face 21 is used to connect the solar cell 300; the connecting section 3 connects the first welding section 1 and the second welding section 2;
[0046] The first connecting end face 11 includes a first connecting portion 111 and a first groove 112, the first groove 112 is closer to the connecting section 3 than the first connecting portion 111, and one end of the solar cell 300 close to the connecting section 3 floats in the first groove 112; and / or, the second connecting end face 21 includes a second connecting portion 211 and a second groove 212, the second groove 212 is closer to the connecting section 3 than the second connecting portion 211, and one end of the solar cell 300 close to the connecting section 3 floats in the second groove 212.
[0047] The embodiments of the present application provide a solder strip to connect the solar cells 300 in series, so that the solar cells 300 can play the role of conducting electricity and collecting electricity.
[0048] As Figure 1 and Figure 2 shown, the solder strip includes a first welding section 1, a second welding section 2 and a connecting section 3, the connecting section 3 connects the first welding section 1 and the second welding section 2, and the first welding section 1, the connecting section 3 and the second welding section 2 are integrally formed.
[0049] Specifically, the first welding section 1 and the second welding section 2 are spaced in a first direction, that is to say, please refer to Figure 1 , in the first direction, the first welding section 1 is located below the second welding section 2, the connecting section 3 connects the first welding section 1 and the second welding section 2, so one end of the connecting section 3 is connected to one end of the first welding section 1 close to the second welding section 2, and the other end of the connecting section 3 is connected to one end of the second welding section 2 close to the first welding section 1. Therefore, during the lamination process, the solder strip 100 is stretched, and the connecting section 3 can play a buffering role, which is beneficial to preventing the solder strip 100 from being pulled off or falling off from the solar cell 300.
[0050] Wherein, the first welding section 1 and the second welding section 2 may be partially overlapped, adjacent or spaced in a second direction.
[0051] Further explanation, the first welding section 1 includes a first connecting end face 11, and the first connecting end face 11 is used to connect the battery cell 300. The second welding section 2 includes a second connecting end face 21, and the second connecting end face 21 is used to connect the battery cell 300.
[0052] In a specific embodiment, the first connecting end face 11 includes a first connecting portion 111 and a first groove 112.
[0053] In another specific embodiment, the second connecting end face 21 includes a second connecting portion 211 and a second groove 212.
[0054] In another specific embodiment, the first connecting end face 11 includes a first connecting portion 111 and a first groove 112; the second connecting end face 21 includes a second connecting portion 211 and a second groove 212. Taking this embodiment as an example for explanation, specifically, the first connecting end face 11 includes a first connecting portion 111 and a first groove 112. The first groove 112 is closer to the connecting section 3 than the first connecting portion 111. A part of the battery cell 300 is connected to the first connecting portion 111 of the first connecting end face 11, and the other part extends to the first groove 112 and floats above the first groove 112. During the lamination process of the battery cell 300, if the welding tape 100 is stretched, the connecting section 3 can play a buffering role. The edge of the battery cell 300 close to the connecting section 3 floats at the first groove 112, so as to avoid the phenomenon that the edge of the battery cell 300 directly contacts the welding tape 100 and is squeezed to cause cracking and fragmentation; the second connecting end face 21 includes a second connecting portion 211 and a second groove 212. The second groove 212 is closer to the connecting section 3 than the second connecting portion 211. A part of the battery cell 300 is connected to the second connecting portion 211 of the second connecting end face 21, and the other part extends to the second groove 212 and floats above the second groove 212. During the lamination process of the battery cell 300, if the welding tape 100 is stretched, the connecting section 3 can play a buffering role. The edge of the battery cell 300 close to the connecting section 3 floats at the second groove 212, so as to avoid the phenomenon that the edge of the battery cell 300 directly contacts the welding tape 100 and is squeezed to cause cracking and fragmentation.
[0055] In an alternative embodiment, in the first direction, the first connecting end face 11 is located on the side of the first welding section 1 close to the connecting section 3, and the second connecting end face 21 is located on the side of the second welding section 2 close to the connecting section 3.
[0056] Such as Figure 1 and Figure 2As shown, the first connection end face 11 is located on the side of the first welding section 1 close to the connection section 3, and the second connection end face 21 is located on the side of the second welding section 2 close to the connection section 3. The first connection end face 11 faces the second connection end face 21. Therefore, the first connection end face 11 and the second connection end face 21 are respectively located on different sides of the solder strip 100. A first accommodation space will be formed between the first welding section 1 and the connection section 3, and the first connection end face 11 is thus in the first accommodation space. When the battery cell 300 is connected to the first welding section 1, the battery cell 300 is located in the first accommodation space; a second accommodation space will be formed between the second welding section 2 and the connection section 3, and the second connection end face 21 is thus in the second accommodation space. When the battery cell 300 is connected to the second welding section 2, the battery cell 300 is located in the second accommodation space. From the above, the volume occupied after the battery cells 300 are connected in series can be reduced.
[0057] In a specific embodiment, the first groove 112 is connected to one end of the connection section 3, and the second groove 212 is connected to the other end of the connection section 3. This structure is simple and convenient for forming the first groove 112, the second groove 212 and the connection section 3 by rolling with a mold 200.
[0058] In another specific embodiment, as Figure 3 shown, the first connection end face 11 further includes a first strengthening portion 113, and the first strengthening portion 113 is located between the first groove 112 and the connection section 3. In the first direction, the thickness of the first strengthening portion 113 is the same as the thickness of the first connection portion 111; the second connection end face 21 further includes a second strengthening portion 213, and the second strengthening portion 213 is located between the second groove 212 and the connection section 3. In the first direction, the thickness of the second strengthening portion 213 is the same as the thickness of the second connection portion 211.
[0059] As Figure 3 shown, the first strengthening portion 113 is located between the first groove 112 and the connection section 3, and the second strengthening portion 213 is located between the second groove 212 and the connection section 3. Since the connection section 3 is a bent portion, when the connection section 3 is stretched, the first strengthening portion 113 and the second strengthening portion 213 can improve the structural strength of the connection section 3, thereby preventing the solder strip 100 from being pulled apart.
[0060] In an alternative embodiment, the extension line of the connection section 3 and the extension line of the first connection end face 11 form a first angle a, and the first angle a is an obtuse angle; the extension line of the connection section 3 and the extension line of the second connection end face 21 form a second angle b, and the second angle b is an obtuse angle.
[0061] Wherein, the extension line of the connecting section 3 is the extension line in the length direction of the connecting section 3; the extension line of the first connecting end face 11 is the extension line in the length direction of the first connecting end face 11, that is to say, the extension line of the first connecting end face 11 in the second direction; the extension line of the second connecting end face 21 is the extension line in the length direction of the second connecting end face 21, that is to say, the extension line of the second connecting end face 21 in the second direction.
[0062] As Figure 1 shown, the extension line of the connecting section 3 and the extension line of the first connecting end face 11 form a first included angle a, and the first included angle a is an obtuse angle; the extension line of the connecting section 3 and the extension line of the second connecting end face 21 form a second included angle b, and the second included angle b is an obtuse angle. On the one hand, when the connecting section 3 is rolled, the welding strip 100 can be prevented from being broken; on the other hand, when the connecting section 3 is stretched to form a buffer, the situation that the connecting section 3 is broken can be reduced.
[0063] As Figures 4 - 10 shown, according to the second aspect of the embodiments of the present application, a die 200 is provided. The die 200 is used for rolling and forming the above-mentioned welding strip 100. The die 200 includes a first sub-die 4 and a second sub-die 5; the first sub-die 4 includes a first rolling end face 41, and the first rolling end face 41 includes a first rolling area 411, a second rolling area 412, and a third rolling area 413 arranged in sequence along the second direction. In the first direction, the first rolling area 411 and the third rolling area 413 are arranged at intervals, and the second rolling area 412 connects the first rolling area 411 and the third rolling area 413; the second sub-die 5 includes a second rolling end face 51, the second rolling end face 51 faces the first rolling end face 41, and the second rolling end face 51 includes a fourth rolling area 511, a fifth rolling area 512, and a sixth rolling area 513 arranged in sequence along the second direction. In the first direction, the fourth rolling area 511 and the sixth rolling area 513 are arranged at intervals, and the fifth rolling area 512 connects the fourth rolling area 511 and the sixth rolling area 513; the first rolling area 411 and the fourth rolling area 511 are rolled to form a first groove 112, the second rolling area 412 and the fifth rolling area 512 are rolled to form a connecting section 3, and the third rolling area 413 and the sixth rolling area 513 are rolled to form a second groove 212; the first direction intersects with the second direction.
[0064] The embodiments of the present application provide a die 200. The die 200 includes a first sub-die 4 and a second sub-die 5. The first sub-die 4 and the second sub-die 5 act together to roll and form the above-mentioned welding strip 100.
[0065] Wherein, as Figure 5 , Figure 6 and Figure 7As shown, the first sub-mold 4 includes a first rolling end face 41. The first rolling end face 41 is successively provided with a first rolling area 411, a second rolling area 412, and a third rolling area 413 in the second direction. The first rolling area 411 and the third rolling area 413 are spaced apart in the first direction. The second rolling area 412 is located between the first rolling area 411 and the third rolling area 413 and connects the first rolling area 411 and the third rolling area 413. The second sub-mold 5 includes a second rolling end face 51. The second rolling end face 51 is successively provided with a fourth rolling area 511, a fifth rolling area 512, and a sixth rolling area 513 in the second direction. In the first direction, the fourth rolling area 511 and the sixth rolling area 513 are spaced apart. The fifth rolling area 512 is located between the fourth rolling area 511 and the sixth rolling area 513 and connects the fourth rolling area 511 and the sixth rolling area 513.
[0066] Further explanation, the first sub-mold 4 and the second sub-mold 5 are spaced apart in the first direction. The first rolling end face 41 is located on the side of the first sub-mold 4 facing the second sub-mold 5. The second rolling end face 51 is located on the side of the second sub-mold 5 facing the first sub-mold 4. Place the welding strip to be rolled on the second sub-mold 5 along the second direction. The first sub-mold 4 approaches the second sub-mold 5. The first rolling area 411 and the fourth rolling area 511 form a first groove 112 on the welding strip to be rolled. The second rolling area 412 and the fifth rolling area 512 form a connecting section 3 on the welding strip to be rolled. The third rolling area 413 and the sixth rolling area 513 form a second groove 212 on the welding strip to be rolled. Thus, the welding strip 100 as described above can be rolled by the mold provided in the embodiment of the present application, and the structure of the mold 200 is simple.
[0067] In an optional embodiment, the first rolling area 411 and the third rolling area 413 are spaced apart in the second direction; the fourth rolling area 511 and the sixth rolling area 513 are spaced apart in the second direction.
[0068] Such as Figure 5 、 Figure 6 and Figure 7As shown, the first rolling zone 411 and the third rolling zone 413 are spaced apart in the second direction, and the first rolling zone 411 and the third rolling zone 413 are connected by the second rolling zone 412. Therefore, the extension line of the second rolling zone 412 is inclined with respect to the extension line of the second direction or the extension line of the first direction; the fourth rolling zone 511 and the sixth rolling zone 513 are spaced apart in the second direction, and the fourth rolling zone 511 and the sixth rolling zone 513 are connected by the fifth rolling zone 512. Therefore, the extension line of the fifth rolling zone 512 is inclined with respect to the extension line of the second direction or the extension line of the first direction. Therefore, the second rolling zone 412 and the fifth rolling zone 512 can form a connection section 3 on the weld strip to be rolled. And the extension line of the connection section 3 forms a first included angle a with the extension line of the first connection end face 11, and the first included angle a is an obtuse angle; the extension line of the connection section 3 forms a second included angle b with the extension line of the second connection end face 21, and the second included angle b is an obtuse angle.
[0069] In an optional implementation manner, in the first direction, the first rolling zone 411 protrudes from the third rolling zone 413 in the first direction; the sixth rolling zone 513 protrudes from the fourth rolling zone 511 in the first direction.
[0070] As Figure 5 , Figure 6 and Figure 7 As shown, in the first direction, the first rolling zone 411 protrudes from the third rolling zone 413, and the sixth rolling zone 513 protrudes from the fourth rolling zone 511; the weld strip to be rolled is placed on the second rolling end face 51, the first connection end face 11 faces the first rolling end face 41, and the second connection end face 21 faces the second rolling end face 51. Therefore, the first rolling zone 411 can roll a first groove 112 on the first connection end face 11, and the sixth rolling zone 513 can roll a second groove 212 on the second connection end face 21.
[0071] In an optional implementation manner, the second rolling end face 51 is provided with a first protrusion 516 and a second protrusion 517. The first protrusion 516 and the second protrusion 517 are spaced apart along the third direction. The sixth rolling zone 513 is located between the first protrusion 516 and the second protrusion 517. The first protrusion 516 and the second protrusion 517 protrude from the sixth rolling zone 513 in the first direction; the first direction intersects with the third direction, and the second direction intersects with the third direction.
[0072] As Figure 8 and Figure 10As shown, a first protrusion 516 and a second protrusion 517 are provided on the second rolling end face 51. The first protrusion 516 and the second protrusion 517 are arranged at intervals in the third direction. The sixth rolling area 513 is located between the first protrusion 516 and the second protrusion 517. Moreover, the first protrusion 516 protrudes from the sixth rolling area 513 in the first direction, and the second protrusion 517 protrudes from the sixth rolling area 513 in the first direction. When the first sub-mold 4 approaches the second sub-mold 5 to roll the strip to be rolled, the third rolling area 413 will contact the first protrusion 516 and the second protrusion 517, thereby avoiding the first sub-mold 4 and the second sub-mold 5 from rolling the strip to be rolled and breaking it.
[0073] Wherein, the first protrusion 516 and the second protrusion 517 are flush in the first direction, so as to avoid deflection when the third rolling area 413 abuts against the first protrusion 516 and the second protrusion 517, thereby improving the quality of the strip 100.
[0074] In an alternative embodiment, a seventh rolling area 514 is further provided on the second rolling end face 51. The seventh rolling area 514 is located on the side of the fourth rolling area 511 away from the fifth rolling area 512 in the second direction. A part of the side of the first rolling area 411 away from the second rolling area 412 extends to the seventh rolling area 514; the fourth rolling area 511 protrudes from the seventh rolling area 514 in the first direction.
[0075] As Figure 5 、 Figure 6 and Figure 7 shown, in the second direction, a part of the side of the first rolling area 411 away from the second rolling area 412 extends above the seventh rolling area 514; since the fourth rolling area 511 protrudes from the seventh rolling area 514 in the first direction, when the first sub-mold 4 and the second sub-mold 5 roll the strip to be rolled and roll the first groove 112 on the first connection end face 11, the seventh rolling area 514 and the first rolling area 411 act together to limit the end of the first welding section 1 away from the first groove 112 from tilting up, thereby improving the quality of the strip 100.
[0076] In an alternative embodiment, an eighth rolling area 515 is further provided on the second rolling end face 51. The eighth rolling area 515 is located on the side of the sixth rolling area 513 away from the fifth rolling area 512 in the second direction. A part of the side of the third rolling area 413 away from the second rolling area 412 extends to the eighth rolling area 515; the sixth rolling area 513 protrudes from the eighth rolling area 515 in the first direction.
[0077] As Figure 5 、 Figure 6 andFigure 7 As shown, in the second direction, a part of the third rolling zone 413 on the side away from the second rolling zone 412 extends above the eighth rolling zone 515; since the sixth rolling zone 513 protrudes from the eighth rolling zone 515 in the first direction, when the first sub-mold 4 and the second sub-mold 5 roll the strip to be rolled, when the second groove 212 is rolled on the second connecting end face 21, the eighth rolling zone 515 and the third rolling zone 413 act together to limit the end of the second welding section 2 away from the second groove 212 from tilting up, thereby improving the quality of the strip 100.
[0078] Although some specific embodiments of the present application have been described in detail by way of examples, those skilled in the art should understand that the above examples are only for illustration and not for limiting the scope of the present application. Those skilled in the art should understand that the above embodiments can be modified without departing from the scope and spirit of the present application. The scope of the present application is defined by the appended claims.
Claims
1. A solder tape, characterized in that, Comprising: A first welding section (1), the first welding section (1) includes a first connection end face (11), and the first connection end face (11) is used for connecting a battery cell (300); A second welding section (2), the second welding section (2) is spaced from the first welding section (1) in a first direction, the second welding section (2) includes a second connection end face (21), and the second connection end face (21) is used for connecting a battery cell (300); A connection section (3), the connection section (3) connects the first welding section (1) and the second welding section (2); The first connection end face (11) includes a first connection portion (111) and a first groove (112), the first groove (112) is closer to the connection section (3) than the first connection portion (111), and one end of the battery cell (300) close to the connection section (3) floats in the first groove (112); and / or, the second connection end face (21) includes a second connection portion (211) and a second groove (212), the second groove (212) is closer to the connection section (3) than the second connection portion (211), and one end of the battery cell (300) close to the connection section (3) floats in the second groove (212).
2. The solder tape according to claim 1, characterized in that The first groove (112) is connected to one end of the connection section (3), and the second groove (212) is connected to the other end of the connection section (3).
3. The solder strip according to claim 1 is characterized in that, An extension line of the connection section (3) and an extension line of the first connection end face (11) form a first included angle (a), and the first included angle (a) is an obtuse angle.
4. The solder ribbon according to claim 1, wherein An extension line of the connection section (3) and an extension line of the second connection end face (21) form a second included angle (b), and the second included angle (b) is an obtuse angle.
5. A mold, characterized in that, The die (200) is used for rolling and forming the solder strip (100) according to any one of claims 1-4, and the die (200) includes: A first sub-die (4), the first sub-die (4) includes a first rolling end face (41), the first rolling end face (41) includes a first rolling area (411), a second rolling area (412) and a third rolling area (413) arranged in sequence along a second direction, in the first direction, the first rolling area (411) and the third rolling area (413) are spaced apart, and the second rolling area (412) connects the first rolling area (411) and the third rolling area (413); A second sub-die (5), the second sub-die (5) includes a second rolling end face (51), the second rolling end face (51) faces the first rolling end face (41), the second rolling end face (51) includes a fourth rolling area (511), a fifth rolling area (512) and a sixth rolling area (513) arranged in sequence along the second direction, in the first direction, the fourth rolling area (511) and the sixth rolling area (513) are spaced apart, and the fifth rolling area (512) connects the fourth rolling area (511) and the sixth rolling area (513); The first rolling zone (411) and the fourth rolling zone (511) roll to form the first groove (112), the second rolling zone (412) and the fifth rolling zone (512) roll to form the connecting section (3), and the third rolling zone (413) and the sixth rolling zone (513) roll to form the second groove (212); The first direction intersects the second direction.
6. The mold according to claim 5, characterized in that, The first rolling zone (411) and the third rolling zone (413) are spaced apart in the second direction; The fourth rolling zone (511) and the sixth rolling zone (513) are spaced apart in the second direction.
7. The mold according to claim 5, characterized in that, In the first direction, the first rolling zone (411) protrudes from the third rolling zone (413) in the first direction; The sixth rolling zone (513) protrudes from the fourth rolling zone (511) in the first direction.
8. The mold according to claim 5, characterized in that, On the second rolling end face (51), there are a first protrusion (516) and a second protrusion (517). The first protrusion (516) and the second protrusion (517) are spaced apart along the third direction. The sixth rolling zone (513) is located between the first protrusion (516) and the second protrusion (517). The first protrusion (516) and the second protrusion (517) protrude from the sixth rolling zone (513) in the first direction; The first direction intersects the third direction, and the second direction intersects the third direction.
9. The mold according to claim 5, characterized in that, The second rolling end face (51) is further provided with a seventh rolling zone (514). The seventh rolling zone (514) is located on the side of the fourth rolling zone (511) away from the fifth rolling zone (512) in the second direction. A part of the side of the first rolling zone (411) away from the second rolling zone (412) extends to the seventh rolling zone (514); The fourth rolling zone (511) protrudes from the seventh rolling zone (514) in the first direction.
10. The mold according to claim 5, characterized in that, The second rolling end face (51) is further provided with an eighth rolling zone (515). The eighth rolling zone (515) is located on the side of the sixth rolling zone (513) away from the fifth rolling zone (512) in the second direction. A part of the side of the third rolling zone (413) away from the second rolling zone (412) extends to the eighth rolling zone (515); The sixth rolling zone (513) protrudes from the eighth rolling zone (515) in the first direction.