Crimping structure and battery module

Abstract

The utility model provides a crimping structure and a battery module, and the crimping structure comprises a connecting bar, the connecting bar is provided with a large surface and a small surface, the small surface is a side surface, and the small surface is provided with a connecting part; and the acquisition wire is provided with a wire core exposed section, and the wire core exposed section is embedded into the connecting part. By embedding the exposed section of the wire core of the acquisition wire into the connecting part of the connecting bar, the acquisition wire and the connecting bar are firmly connected, the wire core is prevented from falling off from the connecting part, and meanwhile, the exposed section of the wire core is completely wrapped by the connecting part and does not need to be additionally coated with glue for protection, so that the production efficiency can be improved; therefore, the problems that the connection strength is low and the production efficiency is influenced due to long curing time of the welding spot protection glue when the collection line and the connection bar are welded through ultrasonic waves in the prior art are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, in particular to a crimping structure and a battery module. Background Art

[0002] In the related art, the battery bus and the voltage collection line are connected by ultrasonic welding. After welding, it is usually necessary to apply solder joint protective glue at the welding point to prevent the wire core from oxidizing and increase the connection strength between the voltage collection line and the battery bus. When ultrasonic welding is used, usually only the surface of the voltage collection line close to the battery bus is connected to the battery bus, and the connection strength is low. In addition, the solder joint protective glue takes time to cure, resulting in low production efficiency. Utility Model Content

[0003] The embodiments of the utility model provide a crimping structure and a battery module, which can improve the problems of low connection strength between the voltage collection line and the battery busbar using ultrasonic welding in the related art, and the long curing time of the solder joint protective glue affecting the production efficiency.

[0004] In a first aspect, an embodiment of the present utility model provides a crimping structure, comprising:

[0005] A connecting row, wherein the connecting row has a large face and a small face, wherein the small face is a side face and the small face has a connecting portion;

[0006] The collection line has a bare wire core section, and the bare wire core section is embedded in the connecting part.

[0007] In one embodiment, the connecting portion includes a slot, and the slot includes at least two slot sections connected in sequence, and two adjacent slot sections are connected at an angle.

[0008] In one embodiment, the angle between two adjacent slot segments is α, wherein 0°<α<360°, and α≠180°.

[0009] In one embodiment, the crimping structure is applied to a battery cell module, which includes a battery cell, the connecting row has a fifth surface close to the battery cell, the side of the groove segment close to the small surface is a first groove segment, and along the thickness direction of the connecting row, the first groove segment is inclined to the side away from the fifth surface.

[0010] In one embodiment, the exposed section of the wire core is embedded in the slot, and a gap is provided between the end of the exposed section of the wire core in the slot and the bottom of the slot.

[0011] In one embodiment, the connection portion includes a first connection portion and a second connection portion, and along the thickness direction of the connection row, the first connection portion and the second connection portion are respectively located on two sides of the exposed section of the wire core.

[0012] In one embodiment, the exposed section of the wire core is arranged in a winding manner in the connecting portion, and both the first connecting portion and the second connecting portion are arranged in a winding manner, and the winding trend of the two is consistent with the winding trend of the exposed section of the wire core.

[0013] In one embodiment, along the thickness direction of the connection row, a ratio of the thickness of the first connection portion to the thickness of the second connection portion is (0.5-2):(0.5-2).

[0014] In one embodiment, the first connecting portion has a first surface facing away from the exposed section of the wire core, the second connecting portion has a second surface facing away from the exposed section of the wire core, and the first surface is parallel to the second surface and both are planes.

[0015] In one embodiment, the shape of the exposed section of the wire core winding in the connecting portion includes one or more of a sawtooth shape, a wave shape, an S shape or a V shape.

[0016] In one embodiment, a ratio of a length of the connection portion along a width direction of the connection row to a width of the connection row is 0.1-0.4.

[0017] In one embodiment, the thickness of the connecting portion is 1.8-3.2 cm.

[0018] In one embodiment, the acquisition line includes a wire core and a wire sheath, the wire core includes a sheath section and the wire core bare section that are connected to each other, and the wire sheath wraps the sheath section.

[0019] In one embodiment, the connection portion is filled with glue to form a glue layer, and the glue layer extends to the connection between the coating section and the exposed section of the wire core.

[0020] In the second aspect, an embodiment of the utility model provides a battery cell module, including the crimping structure described in the first aspect above, and also including multiple battery cells, the connecting row is used to connect two adjacent battery cells in series and / or in parallel, and the collection line is used to collect battery cell module information.

[0021] In a third aspect, an embodiment of the present utility model provides a method for processing a crimping structure, comprising:

[0022] Providing a connection row, wherein the connection row has a connection portion, and the connection portion is provided with a slot;

[0023] Providing a collection line, wherein the collection line has a bare wire core section;

[0024] Inserting the exposed section of the wire core from the slot into the connecting portion;

[0025] The connecting portion is pressed so that the exposed section of the wire core is embedded in the connecting portion and is arranged in a winding manner in the connecting portion.

[0026] In one embodiment, the method of applying pressure to the connecting portion includes pressing with a mold.

[0027] In one embodiment, the notch of the slot faces one side in the width direction of the connection row.

[0028] Beneficial effects of the embodiments of the utility model:

[0029] In the embodiment of the utility model, the exposed section of the core of the collection line is embedded in the connecting part of the connecting row, so that the collection line and the connecting row are firmly connected to prevent the core from falling off the connecting part. At the same time, the exposed section of the core is completely wrapped by the connecting part, and no additional glue protection is required, which can improve the production efficiency, thereby improving the problem of low connection strength between the collection line and the connecting row using ultrasonic welding in the related art, and the long curing time of the welding point protection glue affecting the production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0031] Figure 1 It is a schematic diagram of a crimping structure provided by an embodiment of the utility model;

[0032] Figure 2 yes Figure 1 Enlarged view of middle B;

[0033] Figure 3 is a three-dimensional diagram of a connection row provided in an embodiment of the utility model;

[0034] Figure 4 is a top view of a connecting row provided in an embodiment of the utility model;

[0035] Figure 5 is along Figure 3 Sectional view along line AA;

[0036] Figure 6 It is a structural schematic diagram after the exposed section of the core of the acquisition line is inserted into the connecting part of the connecting row;

[0037] Figure 7 It is a schematic diagram of the structure after the connection bar with the collection line inserted into the connection part is crimped by using a mold.

[0038] Description of reference numerals:

[0039] 01-connecting row, 011-connecting part, 0111-first connecting part, 0112-second connecting part, 0113-first surface, 0114-third surface, 0115-second surface, 0116-fourth surface, 012-slot, 02-collecting line, 021-exposed section of wire core, 03-mold. DETAILED DESCRIPTION

[0040] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model. In addition, it should be understood that the specific implementation methods described herein are only used to illustrate and explain the utility model, and are not used to limit the utility model. In the utility model, unless otherwise stated, the directional words used, such as "upper" and "lower", generally refer to the upper and lower parts of the device in actual use or working state, specifically the drawing direction in the accompanying drawings; while "inside" and "outside" refer to the outline of the device.

[0041] See also Figure 1 and 2 , a crimping structure, comprising:

[0042] A connecting row 01, wherein the connecting row 01 has a large face and a small face, wherein the small face is a side face, and the small face has a connecting portion 011;

[0043] The acquisition line 02 has a bare core section 021 , and the bare core section 021 is embedded in the connecting portion 011 .

[0044] In some embodiments, the connection bar 01 may be a copper bar or an aluminum bar, and the collection line 02 may be a copper wire or an aluminum wire. It is understood that this is only an example, and the connection bar 01 and the collection line 02 may also be made of other conductive materials.

[0045] It can be understood that the crimping structure is applied to the battery cell module, and the surfaces of the connection row 01 close to the battery cell and away from the battery cell are both large surfaces.

[0046] See also Figure 3 and 4In some embodiments, the small face has a connection portion 011. It can be understood that the connection row 01 is provided with a first side surface and a second side surface along its width direction, the small face is the first side surface and / or the second side surface, and the connection portion 011 can be located on the side where the first side surface is located, or on the side where the second side surface is located. In this way, it is convenient for processing, convenient for connecting the connection portion 011 with the collection line 02, and also convenient for connecting the connection row 01 with the battery pack pole.

[0047] In this embodiment, the exposed core section 021 of the collection line 02 is embedded in the connecting portion 011 of the connecting bar 01, so that the collection line 02 is firmly connected to the connecting bar 01 to prevent the core from falling off the connecting portion. At the same time, the exposed core section 021 is completely wrapped by the connecting portion and does not need additional glue protection, which can improve production efficiency, thereby improving the problem of low connection strength between the collection line 02 and the connecting bar 01 using ultrasonic welding in the related art, and the long curing time of the welding point protection glue affecting production efficiency.

[0048] In some embodiments, the connecting portion 011 includes a slot, and the slot includes at least two slot segments connected in sequence, and two adjacent slot segments are connected at an angle.

[0049] In some embodiments, the angle between two adjacent slot sections is α, where 0°<α<360°, and α≠180°. It can be understood that an angle α can be formed between two adjacent slot sections, and α can be any angle except 0, 180, or 360 degrees. In this way, different slot sections of the slot form resistance to the exposed wire core section 021 in different directions to prevent the exposed wire core section 021 from sliding off the connecting portion 011.

[0050] In some embodiments, the crimping structure is applied to a cell module, the cell module includes a cell, the connection bar 01 has a fifth surface close to the cell, the side of the slot segment close to the small face is the first slot segment, and along the thickness direction of the connection bar 01, the first slot segment is inclined to the side away from the fifth surface. It can be understood that the fifth surface is a large surface, the first slot segment is the first slot segment in the depth direction from the small face where the slot notch is located, and the first slot segment is inclined to the side away from the fifth surface, so that the side where the fifth surface of the connection bar 01 is located is convenient for welding and easy operation.

[0051] In some embodiments, the exposed wire core section 021 is embedded in the slot, and a gap is provided between the end of the exposed wire core section 021 in the slot and the bottom of the slot. It can be understood that the setting of the gap reserves an extension space for the exposed wire core section 021 when the connecting portion 011 is pressed.

[0052] See also Figure 1 and 2In some embodiments, the connection portion 011 includes a first connection portion 0111 and a second connection portion 0112. The first connection portion 0111 and the second connection portion 0112 are respectively located on both sides of the exposed wire core section 021 along the thickness direction of the connection row 01. It can be understood that the first connection portion 0111 and the second connection portion 0112 are respectively located on both sides of the exposed wire core section 021 along the thickness direction of the connection row 01, which facilitates the pressing of the connection portion 011, so that the exposed wire core section 021 is embedded in the connection portion 011 in a winding manner.

[0053] See also Figure 1 and 2 In some embodiments, the exposed wire core section 021 is arranged in a winding manner in the connecting portion 011 , and the first connecting portion 0111 and the second connecting portion 0112 are both arranged in a winding manner, and the winding trend of the two is consistent with the winding trend of the exposed wire core section 021 .

[0054] See also Figure 1 and 2 In some embodiments, the exposed wire core section 021 is arranged in a winding manner in the connecting portion 011, and the first connecting portion 0111 and the second connecting portion 0112 are both arranged in a winding manner, and the winding trend of the two is consistent with the winding trend of the exposed wire core section 021. It can be understood that the exposed wire core section 021 is arranged in a winding manner in the thickness direction of the connecting row 01, and it can also be understood that the winding trend of the first connecting portion 0111 and the second connecting portion 0112 is consistent with the winding trend of the exposed wire core section 021, which means that the first connecting portion 0111 and the second connecting portion 0112 have the same winding shape as the exposed wire core section 021. In this way, the mold 03 with the same winding pressing end as the exposed wire core section 021 can be used for pressing, which is convenient for processing.

[0055] In some embodiments, along the thickness direction of the connecting row 01, the ratio of the thickness of the first connecting part 0111 to the thickness of the second connecting part 0112 is (0.5-2):(0.5-2), for example, it can be 0.5:0.5, 0.5:0.8, 0.5:1, 0.5:1.2, 0.5:1.5, 0.5:1.8, 0.5:2, 1:0.5, 1:0.8, 1:1, 1:1.2, 1:1.5, 1:1.8, 1:2, 2:0.5, 2:0.8, 2:1, 2:1.2, 2:1.5, 2:1.8, 2:2, etc. Within the thickness range, it is conducive to forming a winding shape and can wrap the exposed section 021 of the wire core well.

[0056] See also Figure 1 and 2In some embodiments, the first connection portion 0111 has a first surface 0113 away from the exposed wire core section 021, and the second connection portion 0112 has a second surface 0115 away from the exposed wire core section 021, and the first surface 0113 and the second surface 0115 are parallel and are both planes. It can be understood that the first connection portion 0111 also has a third surface 0114 in contact with the exposed wire core section 021, and the second connection portion 0112 also has a fourth surface 0116 in contact with the exposed wire core section 021, and the third surface 0114 and the fourth surface 0116 are both curved surfaces, and are consistent with the winding trend of the exposed wire core section 021. It can be understood that since the third surface 0114 and the fourth surface 0116 are both curved surfaces, when the mold 03 is used to directly press the first surface 0113 and the second surface 0115, the third surface 0114 and the fourth surface 0116 respectively apply force from opposite sides of the exposed wire core section 021, causing the exposed wire core section 021 to bend, so that after the pressing is completed, the exposed wire core section 021 is embedded in the connecting portion 011 and is windingly arranged inside the connecting portion 011.

[0057] In some embodiments, the winding shape of the exposed core segment 021 can be one or more of a sawtooth shape, a wavy shape, an S shape, or a V shape, thereby increasing the resistance that the exposed core segment 021 needs to overcome to fall off from the connecting portion 011, thereby making the collection line 02 firmly connected to the connecting row 01 and preventing the collection line 02 from falling off from the connecting portion 011.

[0058] In some embodiments, the exposed wire core segment 021 includes at least two wire core segments connected in sequence, and the extension directions of the two adjacent wire core segments are different. It can be understood that an angle can be formed between the two adjacent wire core segments, wherein the angle can be any angle except 0 degrees, 180 degrees, and 360 degrees. In this way, the connecting portion 011 forms resistance to the wire core segments in different extension directions to prevent the exposed wire core segment 021 from sliding off the connecting portion 011.

[0059] In some embodiments, the ratio of the length of the connecting portion 011 along the width direction of the connecting row 01 to the width of the connecting row 01 is 0.1-0.4, for example, it can be 0.1, 0.12, 0.14, 0.16, 0.18, 0.2, 0.22, 0.24, 0.26, 0.28, 0.3, 0.32, 0.34, 0.36, 0.38, 0.4, etc. It can be understood that within this ratio range, the connecting portion 011 can provide sufficient insertion space for the exposed wire core section 021, which is conducive to the connection of the connecting portion 011 and the exposed wire core section 021 after the two are crimped, and will not affect the overall effect of the connecting row 01.

[0060] In some embodiments, the connecting portion 011 has a certain thickness, for example, greater than the diameter of the exposed section of the wire core. It should be noted that the thickness of the connecting portion is the vertical distance between the first surface 0113 and the second surface 0115. This thickness allows the exposed section of the wire core to be completely wrapped and firmly connected by the connecting portion 011 after the exposed section of the wire core is embedded in the connecting portion 011, while ensuring that the strength, size and other performance of the connecting row are not affected.

[0061] Exemplarily, the thickness of the connection portion 011 is 1.8-3.2 cm, for example, 1.8 cm, 2 cm, 2.2 cm, 2.4 cm, 2.6 cm, 2.8 cm, 3 cm, 3.2 cm, etc. Within the thickness range, the exposed wire core section 021 is meandered and embedded in the connection portion 011 while ensuring that the strength of the connection row 01 is not affected.

[0062] See also Figure 1 In some embodiments, the acquisition line 02 further includes a wire core and a wire sheath, the wire core includes a sheath section and a wire core bare section 021 connected to each other, and the wire sheath wraps the sheath section. It can be understood that the wire sheath protects the wire core of the sheath section from oxidation, and the wire core bare section 021 is the part without the wire sheath, and the wire core bare section is meanderingly embedded in the connection part 011, that is, the connection part 011 completely wraps the wire core bare section, which not only ensures a firm connection but also prevents oxidation.

[0063] In some embodiments, the connection portion 011 is filled with glue to form a glue layer, and the glue layer extends to the connection between the coating section and the exposed wire core section 021. It can be understood that the exposed wire core section 021 is embedded in the connection portion 011, and the glue layer is formed by filling with glue, so that the exposed wire core section 021 is further firmly fixed in the slot. It can also be understood that the exposed wire core section 021 is embedded in the connection portion 011, and the glue layer is formed by filling with glue and then pressed, so that the exposed wire core section 021 can be firmly fixed in the slot.

[0064] Based on the same utility model concept, an embodiment of the present application provides a battery module, including the above-mentioned crimping structure, and also includes a plurality of battery cells, the connecting row 01 is used to connect two adjacent battery cells in series and / or in parallel, and the acquisition line is used to collect battery cell module information.

[0065] See also Figure 3-7 The present application also provides a method for processing a crimping structure, which can be used to manufacture the crimping structure of the above-mentioned embodiment. In some embodiments, the processing method includes:

[0066] S01, providing a connection row 01, wherein the connection row 01 has a connection portion 011, and the connection portion 011 is provided with a slot 012;

[0067] S02, providing a collection line 02, wherein the collection line 02 has a bare core section 021;

[0068] S03, inserting the exposed wire core section 021 from the slot 012 into the connecting portion 011;

[0069] S04, applying pressure to the connecting portion 011 so that the exposed section 021 of the wire core is embedded in the connecting portion 011 and is arranged in a winding manner in the connecting portion 011.

[0070] In S01:

[0071] In some embodiments, the connection portion 011 is located on one side of the connection row 01 in the width direction, and the connection row 01 is provided with a first side surface and a second side surface along its width direction. The connection portion 011 can be located on the side where the first side surface is located, or on the side where the second side surface is located, wherein the first side surface and the second side surface are both small surfaces.

[0072] In some embodiments, the slot hole of the slot 012 faces one side in the width direction of the connection row 01 .

[0073] It can be understood that the slot 012 is opened from the side where the thickness of the connecting row 01 is located, so that after the slot 012 is opened, the exposed section 021 of the wire core can be conveniently inserted into the slot 012 and pressed, which is convenient for processing.

[0074] In some embodiments, the axis of the slot 012 may be perpendicular to the thickness direction of the connecting row 01, or may be at an acute angle or an obtuse angle to the thickness direction of the connecting row 01. For example, the axis of the slot 012 may be perpendicular to the thickness direction of the connecting row 01, so that the processing is convenient and the structure of the entire connecting row 01 is stable.

[0075] Furthermore, the slot 012 may be a wedge-shaped, conical or cylindrical slot 012. Exemplarily, the slot 012 is a wedge-shaped slot 012, which is opened from the connecting portion 011 using a wedge-shaped cutter, which is convenient for processing and has strong practicality.

[0076] Furthermore, the axis of the slot 012 is perpendicular to the thickness direction of the connection row 01, and the depth of the slot 012 is the same as the length of the connection portion 011. The slot size of the slot 012 is adapted to the size of the exposed wire core section 021, so that it is convenient to insert the exposed wire core section 021 into the slot 012. In addition, the exposed wire core section 021 can be initially limited before the mold 03 is pressed.

[0077] It is understandable that the slot 012 can be opened by using a punch press in conjunction with a tool.

[0078] It is understandable that the slot 012 can also be opened by directly drilling the slot.

[0079] In some embodiments, along the thickness direction of the connection row 01, the connection portion 011 includes a first connection portion 0111 and a second connection portion 0112 that are spaced apart. It can be understood that after the exposed wire core section 021 is inserted into the slot 012, the first connection portion 0111 and the second connection portion 0112 can be crimped toward each other, so that in the final crimping structure, along the thickness direction of the connection row 01, the first connection portion 0111 and the second connection portion 0112 are respectively located on both sides of the exposed wire core section 021.

[0080] In S02:

[0081] In some embodiments, the acquisition line 02 further includes a wire core and a wire sheath, the wire core includes a sheathed section and a wire core exposed section 021 that are interconnected, and the wire sheath wraps the sheathed section. It can be understood that the wire sheath protects the wire core of the sheathed section from oxidation, and the wire core exposed section 021 is the part that is not wrapped with the wire sheath. After the crimping structure is subsequently formed, the wire core exposed section is meandered and embedded in the connecting portion 011, and the connecting portion 011 can completely wrap the wire core exposed section, which can not only ensure a firm connection but also prevent oxidation.

[0082] In S03:

[0083] In some embodiments, the method of placing the exposed core section 021 in the connecting portion 011 includes completely inserting the exposed core section 021 into the slot 012 .

[0084] In S04:

[0085] In some embodiments, the method of applying pressure to the connection part 011 includes pressing with a mold 03, and the first connection part 0111 and the second connection part 0112 are both arranged in a winding manner, and the winding trend of the two is consistent with the winding trend of the exposed wire core section 021. It can be understood that before pressing, the first connection part 0111, the second connection part 0112 and the exposed wire core section can all be flat structures. At this time, the facing sides of the male / female molds used for pressing can have complementary winding surfaces. After the exposed wire core section is inserted into the first connection part 0111 and the second connection part 0112, the connection part can be placed between the male / female molds, and the first connection part 0111, the second connection part 0112 and the exposed wire core section located therebetween are pressed into a winding arrangement by the complementary winding surfaces on the male / female molds, and the exposed wire core section is embedded between the first connection part 0111 and the second connection part 0112.

[0086] In some embodiments, the portion where the male / female mold 03 contacts the connecting portion 011 may also be flat. Specifically, the first connecting portion 0111 has a first surface 0113 that faces away from the exposed wire core section 021, and the second connecting portion 0112 has a second surface 0115 that faces away from the exposed wire core section 021. The first surface 0113 and the second surface 0115 are parallel and both are planes. Furthermore, the first connecting portion 0111 also has a third surface 0114 that contacts the exposed wire core section 021, and the second connecting portion 0112 also has a fourth surface 0116 that contacts the exposed wire core section 021. The third surface 0114 and the fourth surface 0116 are both curved surfaces, and their shapes are complementary. Thus, after the exposed section of the wire core is inserted between the first connection part 0111 and the second connection part 0112, when the first connection part 0111 and the second connection part 0112 are crimped toward each other, the exposed section of the wire core 021 can be embedded in a winding manner between the first connection part 0111 and the second connection part 0112 through the complementary curved surface structure of the third surface 0114 and the fourth surface 0116.

[0087] In some embodiments, a battery pole contact portion is provided on the connection row 01, and the battery pole contact portion is pre-tightened during pressing.

[0088] The above is a detailed introduction to the embodiments of the present invention. Specific examples are used in this article to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method and core idea of ​​the present invention. At the same time, for technicians in this field, according to the idea of ​​the present invention, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on the present invention.

Claims

1. A crimping structure, characterized in that: include: A connecting row, wherein the connecting row has a large face and a small face, the small face is a side face, the small face has a connecting portion, and the connecting portion includes a slot; The acquisition line has a bare wire core section, and the bare wire core section is embedded in the slot.

2. The crimping structure according to claim 1, characterized in that: The slot includes at least two slot sections connected in sequence, and two adjacent slot sections are connected at an angle.

3. The crimping structure according to claim 2, characterized in that: The included angle between two adjacent groove sections is α, wherein 0°<α<360°, and α≠180°.

4. The crimping structure according to claim 2, characterized in that: The crimping structure is applied to a battery cell module, which includes a battery cell. The connecting row has a fifth surface close to the battery cell, and the side of the groove segment close to the small surface is a first groove segment. Along the thickness direction of the connecting row, the first groove segment is inclined to the side away from the fifth surface.

5. The crimping structure according to claim 2, characterized in that: A distance is arranged between the end of the exposed section of the wire core in the slot and the bottom of the slot.

6. The crimping structure according to claim 1, characterized in that: The connecting portion includes a first connecting portion and a second connecting portion. Along the thickness direction of the connecting row, the first connecting portion and the second connecting portion are respectively located at two sides of the exposed section of the wire core.

7. The crimping structure according to claim 6, characterized in that: The exposed section of the wire core is arranged in a winding manner in the connecting portion, and both the first connecting portion and the second connecting portion are arranged in a winding manner, and the winding trend of the two is consistent with the winding trend of the exposed section of the wire core.

8. The crimping structure according to claim 6, characterized in that: Along the thickness direction of the connection row, a ratio of the thickness of the first connection portion to the thickness of the second connection portion is (0.5-2):(0.5-2).

9. The crimping structure according to claim 6, characterized in that: The first connecting portion has a first surface facing away from the exposed section of the wire core, and the second connecting portion has a second surface facing away from the exposed section of the wire core. The first surface is parallel to the second surface and both are planes.

10. The crimping structure according to claim 6, characterized in that: The shape of the exposed section of the wire core winding in the connecting portion includes one or more of a sawtooth shape, a wave shape, an S shape or a V shape.

11. The crimping structure according to claim 1, characterized in that: The ratio of the length of the connection portion along the width direction of the connection row to the width of the connection row is 0.1-0.

4.

12. The crimping structure according to claim 1, characterized in that: The thickness of the connecting portion is 1.8 to 3.2 cm.

13. The crimping structure according to any one of claims 1 to 12, characterized in that: The acquisition line includes a wire core and a wire sheath, the wire core includes a sheath section and the wire core exposed section that are connected to each other, and the wire sheath wraps the sheath section.

14. The crimping structure according to claim 13, characterized in that: The connection portion is filled with glue to form a glue layer, and the glue layer extends to the connection between the coating section and the exposed section of the wire core.

15. A battery module, characterized in that: It comprises the crimping structure as described in any one of claims 1 to 14, and also comprises a plurality of battery cells, wherein the connecting row is used to connect two adjacent battery cells in series and / or in parallel, and the acquisition line is used to collect battery cell module information.

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