Pin component and battery

Abstract

The utility model provides a pin component and a battery. The pin component comprises a tab connecting section, a switching section and a pole connecting section; the switching section is connected with the tab connecting section in a bending manner, and a first included angle is formed between the switching section and the tab connecting section; the pole connecting section is connected with the switching section in a bending manner, and part of the pole connecting section and the switching section are arranged in an overlapping manner. Part of the pole connecting section and the switching section are overlapped, so that materials at the overlapped position are stacked, when the pin component is subjected to a pulling acting force, the switching section and the pole connecting section can be mutually restrained, the pole connecting section and the tab connecting section are prevented from being far away from each other, and when the pin component is subjected to an extruding acting force, the pole connecting section and the tab connecting section can be prevented from being separated from each other. The switching section and the pole connecting section can support each other, and the bending position between the switching section and the pole connecting section is not easy to fatigue, so that the cracking risk at the bending stress concentration position of the pin component can be reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to battery technology field, specifically relates to pin component and battery. BACKGROUND

[0002] In the related art, the pole lug and the tab of the core package are electrically connected through the pin component, and the shape of the pin component is usually complex to make the pin component have higher compatibility in space, so that the pin component can connect the pole lug and the tab at different positions in space, thereby realizing the electrical connection between the pole lug and the pole. SUMMARY

[0003] The embodiments of the utility model provide a kind of pin component and battery, can improve the technical problem that pin component cracking in use process, pin component bending stress concentration place is easy to crack.

[0004] In the first aspect, the embodiments of the utility model provide a kind of pin component, and the pin component includes tab connecting section, adapter section and pole connecting section;Adapter section is bently connected with the tab connecting section, and there is first included angle between the tab connecting section;Pole connecting section is bently connected with the adapter section, and part of the pole connecting section is overlapped with the adapter section.

[0005] In some embodiments, on the same projection plane perpendicular to the thickness direction of the pole connecting section, the orthogonal projection of the adapter section is completely in the orthogonal projection of the pole connecting section.

[0006] In some embodiments, the angle between the extension direction of the pole connecting section and the thickness direction of the tab connecting section ranges between 87 ° and 90 °.

[0007] In some embodiments, the extension direction of the pole connecting section is perpendicular to the thickness direction of the tab connecting section.

[0008] In some embodiments, the adapter section and the pole connecting section have first creases, and the extension direction of the first creases and the extension direction of the pole connecting section have second included angle.

[0009] In some embodiments, the second included angle ranges between 40 ° and 50 °.

[0010] In some embodiments, the pole connecting section is located on the side of the adapter section towards the tab connecting section.

[0011] In some embodiments, the pole connecting section comprises a first segment and a second segment, the first segment is arranged in a bending connection and overlap with the adapter segment, the second segment is connected with the first segment and is located at a different height position along the thickness direction of the pole connecting section to define a first avoiding slot, and the opening of the first avoiding slot is towards the side of the pole connecting section away from the adapter segment.

[0012] In some embodiments, the second segment is provided with a pole mounting hole penetrating through the second segment along the thickness direction of the pole connecting section.

[0013] In some embodiments, the adapter segment has a first surface away from the first segment, the second segment has a second surface away from the first avoiding slot, and the second surface is flush with the first surface.

[0014] In some embodiments, the lug connecting section comprises a first flat segment, a second flat segment and a connecting segment, the first flat segment is in a bending connection with the adapter segment, the connecting segment is connected to one end of the first flat segment away from the adapter segment, and the second flat segment is connected to one end of the connecting segment away from the first flat segment; the connecting segment is arranged opposite to the adapter segment, and the adapter segment, the first flat segment and the connecting segment define a second avoiding slot.

[0015] In some embodiments, the first included angle ranges from 87° to 92°.

[0016] In a second aspect, embodiments of the utility model also provide a battery, the battery comprises the pin member of any one of the above embodiments.

[0017] The embodiments of the utility model have the beneficial effects that:

[0018] In the embodiments of the utility model, the partial pole connecting section and the adapter segment are arranged in an overlap, so that the materials are accumulated at the overlapping position, when the pin member is subjected to a pulling force, the adapter segment and the pole connecting section can constrain each other, so that the pole connecting section and the lug connecting section are prevented from moving away from each other, when the pin member is subjected to a pressing force, the adapter segment and the pole connecting section can support each other, and the bending position between the adapter segment and the pole connecting section is not prone to fatigue, so that the risk of cracking at the bending stress concentration position of the pin member can be reduced. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical scheme in the embodiments of the present application, the drawings needed to be used in the embodiment description will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative effort on the basis of these drawings.

[0020] Figure 1 is a perspective view of the pin member provided by the embodiments of the present application;

[0021] Figure 2 is Figure 1 is a front view of the pin member shown in the figure;

[0022] Figure 3 is Figure 1 is a left view of the pin member shown in the figure;

[0023] Figure 4 is Figure 1 is a top view of the pin member shown in the figure;

[0024] Figure 5 is a structural schematic view of the pin member of some other embodiments of the present application;

[0025] Figure 6 is a structural schematic view of the pin member of some other embodiments of the present application;

[0026] Figure 7 is a disassembled schematic view of the battery provided by the embodiments of the present application;

[0027] Figure 8 is a structural schematic view of the battery with the shell removed provided by the embodiments of the present application;

[0028] Figure 9 is Figure 8 is an enlarged view of part A in the figure;

[0029] Figure 10 is Figure 8 is a left view of the battery shown in the figure;

[0030] Figure 11 is a flow chart of the preparation method of the pin member provided by the embodiments of the present application;

[0031] Figure 12 is a structural schematic view of the metal piece provided by the embodiments of the present application;

[0032] Figure 13 is Figure 8 is a schematic view of one bending of the metal piece shown in the figure;

[0033] Figure 14 is Figure 9A further bending of the shown metal piece is schematically illustrated;

[0034] Figure 15 A structure schematic diagram of a metal piece provided by another embodiment of the utility model;

[0035] Figure 16 A structure schematic diagram of a metal piece provided by still another embodiment of the utility model.

[0036] Reference signs:

[0037] 100-battery;11-end cover;12-pole;13-pin member;131-tab connecting section;1311-first flat section;1312-second flat section;1313-connecting section;1314-second avoiding slot;132-adapting section;1321-first surface;133-pole connecting section;1331-first section;1332-second section;13321-pole mounting hole;13322-second surface;1333-first avoiding slot;134-first crease;135-second crease;20-core package;21-main body;22-tab;221-flat area;222-bending area;30-housing;1-first process notch part;2-second process notch part;Z-thickness direction of the pole connecting section;X-extension direction of the pole connecting section;Y-thickness direction of the tab connecting section. DETAILED DESCRIPTION

[0038] The technical solutions in the embodiments of the utility model will be clearly and completely described in connection with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all the other embodiments obtained by the person skilled in the art without creative labor fall within the protection scope of the utility model. In addition, it should be understood that the specific embodiments described herein are only used for illustrating and explaining the utility model, and are not used for limiting the utility model. In the utility model, the orientation words such as 'up' and 'down' are generally used for indicating the up and down in the actual use or working state of the device, and the specific is the drawing direction in the drawings; and 'inner' and 'outer' are used for the contour of the device.

[0039] In the description of the specification, the terms 'one embodiment','some embodiments', 'exemplarily', 'example', or'some examples' and the like are intended to indicate that the specific features, structures, materials or characteristics related to the embodiment or example are included in at least one embodiment or example of the application. The exemplary representation of the above terms does not necessarily mean the same embodiment or example. In addition, the specific features, structures, materials or characteristics can be included in any one or more embodiments or examples in any appropriate manner.

[0040] Hereinafter, the terms "first", "second", "third", etc. are used only for descriptive purposes and should not be construed as implying relative importance or a specific number of technical features indicated. Thus, the features defined with "first", "second", etc. can explicitly or implicitly include one or more of the features. In the description of the embodiments of the present application, unless otherwise stated, the meaning of "a plurality of" is two or more.

[0041] The pin member has an important influence on the battery, and the cracking of the pin member causes a decrease in strength and affects the overcurrent of the battery.

[0042] In the related art, the pole and the tab of the core package are electrically connected through the pin member. Generally, the shape of the pin member is relatively complex, so that the pin member has higher compatibility in space, facilitating the pin member to connect the pole and the tab at different positions in space, thereby realizing the electrical connection between the tab and the pole. The two ends of such a pin member are connected to the tab and the pole, respectively, but the middle part lacks support or constraint, resulting in that the pin member with such a structure is prone to cracking at the stress concentration position during use. In particular, the middle part of the pin member has low strength, and the stress concentration at the bending position during use will cause the pin member to break.

[0043] In view of this, the embodiments of the present application provide a pin member 13, which can be a positive pin member for realizing the electrical connection between the positive pole and the positive tab, or a negative pin member for realizing the electrical connection between the negative pole and the negative tab. The material of the pin member 13 can be various. For example, the material of the pin member 13 includes but is not limited to copper, nickel, steel and alloys thereof, etc. The specific structure of the pin member 13 will be described in detail below in combination with the drawings.

[0044] Referring to Figures 1 to 4 The pin member 13 includes a tab connecting segment 131, an adapter segment 132 and a pole connecting segment 133 connected in sequence.

[0045] The adapter segment 132 is bently connected to the tab connecting segment 131, and the adapter segment 132 and the tab connecting segment 131 have a first included angle a1 therebetween. The pole connecting segment 133 is bently connected to the adapter segment 132, and part of the pole connecting segment 133 is arranged in overlapping manner with the adapter segment 132.

[0046] It can be understood that the pin member 13 has two bent positions, and the bent position between the pole connecting segment 133 and the adapter segment 132 forms a first crease 134, and the bent position between the adapter segment 132 and the tab connecting segment 131 forms a second crease 135.

[0047] In this embodiment, the material is accumulated at the overlapping position by overlapping the partial pole post connecting section 133 and the adapter section 132. When the pin member 13 is subjected to a pulling force, the adapter section 132 and the pole post connecting section 133 can constrain each other, avoiding the pole post connecting section 133 and the tab connecting section 131 from moving away from each other. When the pin member 13 is subjected to a pressing force, the adapter section 132 and the pole post connecting section 133 can support each other, and the bending position between the adapter section 132 and the pole post connecting section 133 is not prone to fatigue, thus reducing the risk of stress concentration and cracking at the bending position of the pin member 13.

[0048] With reference to Figure 3 In some embodiments, the first included angle a1 is in the range of 87° to 92°. It should be understood that the smaller the first included angle a1, the greater the bending amplitude of the tab connecting section 131 and the adapter section 132, and the greater the first included angle, the smaller the bending amplitude of the tab connecting section 131 and the adapter section 132. If the bending amplitude of the tab connecting section 131 and the adapter section 132 is too large, the material at the bending position will be severely deformed, and the bending position is prone to cracking or breaking. If the bending amplitude of the tab connecting section 131 and the adapter section 132 is too small, the pin member 13 is prone to plastic deformation when subjected to a force, and the carrying capacity and stiffness are reduced. Therefore, when the first included angle is in the range of 87° to 92°, the pin member 13 is not prone to cracking or breaking, and the pin member 13 has a higher carrying capacity and stiffness. At the same time, the risk of interference between the tab connecting section 131 and other components in the thickness direction of the tab connecting section 131 during use is also reduced to a great extent.

[0049] For example, the first included angle can be 87°, 87.5°, 88°, 88.5°, 90°, 91°, 91.5°, 92°, and any value therebetween.

[0050] Alternatively, the first included angle is 90°, in other words, the thickness direction Z of the pole post connecting section is perpendicular to the thickness direction of the adapter section 132.

[0051] In some embodiments, the orthogonal projection of the adapter section 132 falls completely within the orthogonal projection of the pole post connecting section 133 in the same projection plane perpendicular to the thickness direction Z of the pole post connecting section. In this way, the adapter section 132 can overlap the pole post connecting section 133 to a great extent.

[0052] The pole post connecting section 133 can extend along the thickness direction Y of the tab connecting section (as shown in Figure 5 The pole post connecting section 133 can also extend along the width direction of the tab connecting section 131 (as shown in Figures 1 to 4 Unlike the embodiment shown in Figure 5 , in the embodiment shown in Figures 1 to 4In the shown embodiment, the pole post connecting section 133 extends substantially along the width direction of the tab connecting section 131, so that the pole post connecting section 133 can be located to a larger extent laterally of the tab connecting section 131, facilitating the connection of the pole post connecting section 133 with the pole post 12 laterally of the tab connecting section 131.

[0053] With reference to Figure 4 In some embodiments, the angle a2 between the extension direction X of the pole post connecting section and the thickness direction Y of the tab connecting section is in the range of 87° to 90°. With such an arrangement, the pole post connecting section 133 can be bent to a larger extent to one side of the width direction of the tab connecting section 131, facilitating the connection of the pole post connecting section 133 with the pole post (to be mentioned later). Also, in the case that the pole post connecting section 133 is located to the side of the adapter section 132 facing the tab connecting section 131, the pole post connecting section 133 is less likely to interfere with the tab connecting section 131 when being bent.

[0054] Exemplarily, the angle between the extension direction X of the pole post connecting section and the thickness direction Y of the tab connecting section can be 87°, 87.2°, 87.5°, 88°, 88.2°, 88.5°, 88.7°, 90°, and any value in between.

[0055] In some embodiments, the extension direction X of the pole post connecting section is perpendicular to the thickness direction Y of the tab connecting section. In other words, the angle between the extension direction X of the pole post connecting section and the thickness direction Y of the tab connecting section is 90°.

[0056] Further, the thickness direction Y of the tab connecting section, the thickness direction Z of the pole post connecting section, and the extension direction X of the pole post connecting section are perpendicular to each other.

[0057] With reference to Figure 4 In some embodiments, the first crease 134 has a second angle a3 with the extension direction X of the pole post connecting section. The second angle can also be understood as the inclination angle of the first crease 134 with respect to the pole post connecting section 133. It can be understood that the first crease 134 is inclined with respect to the extension direction X of the pole post connecting section. With such an arrangement, it is facilitated to bend a straight strip-shaped metal piece to form the pin member 13. Compared with an L-shaped plate-shaped metal piece, a straight strip-shaped metal piece can have a smaller corner or no corner, which can alleviate the cracking of the metal piece during the bending process or alleviate the cracking of the pin member 13 during use.

[0058] In some embodiments, the second included angle is in a range from 40° to 50°. The second included angle is less than 50°, so that the inclination angle of the first fold 134 is not too large, and the pole post connecting segment 133 is not easily interfered with the tab connecting segment 131. The second included angle is greater than 40°, so that the pole post connecting segment 133 is extended to the width direction of the tab connecting segment 131 to a large extent, facilitating the connection of the pole post connecting segment 133 with the pole post 12.

[0059] Exemplarily, the second included angle can be 40°, 41°, 42°, 43°, 44°, 45°, 46°, 47°, 48°, 49°, 50°, and any value therebetween.

[0060] Compared with the adapter segment 132, the pole post connecting segment 133 can be located on the side of the adapter segment 132 away from the tab connecting segment 131 (as shown in the embodiment of Figure 6 ), or the pole post connecting segment 133 can be located on the side of the adapter segment 132 facing the tab connecting segment 131 (as shown in the embodiment of Figures 1 to 4 ). Compared with the embodiment shown in Figure 6 , in the embodiment shown in Figures 1 to 4 , the pole post connecting segment 133 is located on the side of the adapter segment 132 facing the tab connecting segment 131, so that the pole post connecting segment 133 does not occupy additional Z-direction space, allowing the pin member 13 to have a smaller Z-direction size.

[0061] In some embodiments, the pole post connecting segment 133 is located on the side of the adapter segment 132 facing the tab connecting segment 131, and the first included angle α1 is in a range from 87° to 92°. By the first included angle α1 being in a range from 87° to 92°, the risk of interference between the pole post connecting segment 133 and the tab connecting segment 131 can be greatly reduced.

[0062] Referring to Figure 1 and Figure 2 , in some embodiments, the pole post connecting segment 133 includes a first segment 1331 and a second segment 1332, the first segment 1331 and the second segment 1332 are arranged along the extension direction X of the pole post connecting segment, the first segment 1331 is bent and connected with the adapter segment 132 and is arranged in an overlapping manner, the second segment 1332 is connected with the first segment 1331, and along the thickness direction Z of the pole post connecting segment, the first segment 1331 and the second segment 1332 are misaligned, the second segment 1332 is located at a different height position from the first segment 1331, so as to define a first avoiding slot 1333, and the opening of the first avoiding slot 1333 is directed to the side of the pole post connecting segment 133 away from the adapter segment 132.

[0063] By making the pole post connecting segment 133 include a first segment 1331 and a second segment 1332, and the second segment 1332 is located at a different height position than the first segment 1331 along the thickness direction Z of the pole post connecting segment, a first avoiding slot 1333 with a larger opening can be defined, and the possibility of interference between the second segment 1332 and the core package 20 is reduced, thereby greatly reducing the extrusion of the second segment 1332 on the core package 20.

[0064] Optionally, the first segment 1331 is diagonally bent with the adapter segment 132, so that the first segment 1331 and the adapter segment 132 overlap to a greater extent.

[0065] Optionally, the pole post connecting segment 133 is stamped to form the first avoiding slot 1333.

[0066] Referring to Figure 1 and Figure 4 In some embodiments, the second segment 1332 is provided with a pole post mounting hole 13321, which penetrates the second segment 1332 along the thickness direction Z of the pole post connecting segment. The pole post mounting hole 13321 can have various shapes. For example, the shape of the pole post mounting hole 13321 includes but is not limited to a circular shape, an oval shape, a rectangular shape, a waist shape, etc.

[0067] In some embodiments, in order to improve the connection stability of the pin member 13 and the pole post 12, the pole post 12 is inserted into the pole post mounting hole 13321, and part of the pole post 12 is located on the side of the pole post mounting hole 13321 facing the tab connecting segment 131 (such as Figure 9 The part of the pole post 12 that penetrates out of the pole post mounting hole 13321 can be located in the first avoiding slot 1333, which greatly reduces the risk of interference between the pole post 12 and the core package 20.

[0068] Referring to Figure 2 In some embodiments, the adapter segment 132 has a first surface 1321 facing away from the first segment 1331, and the second segment 1332 has a second surface 13322 facing away from the first avoiding slot 1333, and the second surface 13322 is flush with the first surface 1321, in other words, the second surface 13322 is coplanar with the first surface 1321.

[0069] In this way, the top interface consistency of the pin member 13 is improved, which is beneficial to improve the contact area between the top of the pin member 13 and other components (such as the upper plastic), and improve the assembly stability. Moreover, the second segment 1332 does not occupy additional space in the height direction, and the height dimension of the pin member 13 is smaller, which is beneficial to improve the volume energy density of the battery 100.

[0070] Referring to Figure 3 and in combination with referring to Figure 10In some embodiments, the tab connecting section 131 comprises a first flat section 1311, a second flat section 1312 and a connecting section 1313 connected in sequence, the first flat section 1311 is bently connected with the adapter section 132, the connecting section 1313 is connected to one end of the first flat section 1311 away from the adapter section 132, and the second flat section 1312 is connected to one end of the connecting section 1313 away from the first flat section 1311. The connecting section 1313 is oppositely arranged with the adapter section 132, and the adapter section 132, the first flat section 1311 and the connecting section 1313 define a second avoiding groove 1314.

[0071] In the present embodiment, the second avoiding groove 1314 can avoid the tab 22 of the jelly-roll 20, and reduce the extrusion of the tab connecting section 131 on the tab 22.

[0072] Referring to FIG. 1, the tab connecting section 131 is arranged on the tab 22 of the jelly-roll 20. Figure 10 In the case that the jelly-roll 20 is a wound electrode assembly and the tab 22 has a bending area 222, the second avoiding groove 1314 can particularly avoid the bending area 222 of the tab 22, and reduce the risk of cracking of the bending area 222 of the tab 22.

[0073] The pin member 13 includes a tab connecting section 131, a post connecting section 133 and an adapter section 132 which are integrally formed. The tab connecting section 131 is bently connected with the adapter section 132, the post connecting section 133 is bently connected with the adapter section 132, the extension direction X of the post connecting section is parallel to the width direction of the tab connecting section 131, the thickness direction Z of the post connecting section is perpendicular to the thickness direction Y of the tab connecting section, and the extension direction of the tab connecting section 131 is parallel to the thickness direction Z of the post connecting section. The adapter section 132 overlaps with the post connecting section 133, and the included angle between the adapter section 132 and the tab connecting section 131 is 90°. The tab connecting section 131 includes a first flat section 1311, a connecting section 1313 and a second flat section 1312 which are sequentially connected, the first flat section 1311 is bently connected with the adapter section 132, the connecting section 1313 is connected to one end of the first flat section 1311 away from the adapter section 132, and the second flat section 1312 is connected to one end of the connecting section 1313 away from the first flat section 1311. The connecting section 1313 is oppositely arranged with the adapter section 132, and the adapter section 132, the first flat section 1311 and the connecting section 1313 define a second avoiding groove 1314. The post connecting section 133 includes a first section 1331 and a second section 1332 which are connected with each other, the first section 1331 and the second section 1332 are arranged along the extension direction X of the post connecting section, the first section 1331 is bently connected with the adapter section 132, the first section 1331 overlaps with the adapter section 132, along the thickness direction Z of the post connecting section, the first section 1331 and the second section 1332 are located at different heights to define a first avoiding groove 1333, and the opening of the first avoiding groove 1333 faces one side of the tab connecting section 131 away from the adapter section 132. The widths of the first flat section 1311, the second flat section 1312, the connecting section 1313 and the second section 1332 are equal, the first section 1331 and the adapter section 132 are angularly folded, on the same projection plane perpendicular to the thickness direction Z of the post connecting section, the projection of the first section 1331 completely covers the projection of the adapter section 132, and the projection of the first section 1331 is a triangle.

[0074] With reference to Figures 7 to 10 , and in combination with reference to Figures 1 to 4 , the embodiment of the utility model also provides a battery 100, battery 100 includes shell 30, core bag 20 and end cover assembly.

[0075] The core pack 20 is arranged in the shell 30. The core pack 20 can be a winding electrode assembly, and the core pack 20 can be configured in a flat shape. Specifically, the core pack 20 can include a main body 21 and two polar opposite tabs 22, which can be full tabs 22, arranged on both sides of the main body 21 along the extension direction of the winding axis of the core pack 20. The tab 22 can include a flat area 221 and a bent area 222.

[0076] The end cover assembly can include an end cover 11, the pin member 13 provided in the above embodiments, and two polar opposite pole columns 12. The end cover 11 covers the opening of the shell 30, and the end cover 11 and the shell 30 define a containing space for containing the core pack 20. The pole column 12 can be installed on the end cover 11 through a riveting block. The pin member 13 is used to realize the electrical connection between the tabs 22 of the same polarity and the pole columns 12. The pin member 13 electrically connecting the positive tab 22 and the positive pole column 12 can be understood as a positive pin member 13, and the pin member 13 electrically connecting the negative tab 22 and the negative pole column 12 can be understood as a negative pin member 13.

[0077] In some embodiments, the thickness direction Z of the pole column connecting section is parallel to the thickness direction of the end cover 11, the thickness direction Y of the tab connecting section is parallel to the thickness direction of the core pack 20, the second flat section 1312 is welded to the flat area 221 of the tab 22, and the opening of the second avoiding groove 1314 faces the bent area 222 of the tab 22 to avoid the bent area 222 and reduce the extrusion of the tab connecting section 131 on the bent area 222. The notch of the first avoiding groove 1333 faces the core pack 20, the pole column 12 is arranged in the pole column mounting hole 13321, and part of the pole column 12 is located in the first avoiding groove 1333.

[0078] Referring to Figures 11 to 14 , the embodiments of the utility model also provide a preparation method of the pin member 13, which is used for preparing the above pin member, and the method comprises the following steps:

[0079] Step S100: providing a metal piece, the metal piece is in a strip shape,

[0080] Step S200: bending the metal piece twice to obtain the above pin member 13.

[0081] The metal piece is a metal piece plate with a relatively long length and a relatively narrow width.

[0082] In some embodiments, referring to Figure 12 , the metal piece is first obliquely bent by 180° along a first preset folding line P1 to obtain the metal piece shown in Figure 13 , the first preset folding line P1 is arranged at 45° to the width direction of the metal piece, and then the metal piece is further bent by 90° along a second preset folding line P2, and the second preset folding line P2 is parallel to the width direction of the metal piece, to obtainFigure 14 The metal piece is bent again to obtain the pin member 13 shown.

[0083] In Figure 14 On the basis of the embodiment shown, the metal piece can be bent again to obtain the pin member 13 shown. Figure 2

[0084] To reduce the bending difficulty of the metal piece, the first process notch part 1 and the second process notch part 2 can be respectively arranged on both sides of the metal piece in the width direction of the metal piece, and the first process notch part 1 and the second process notch part 2 are arranged in a staggered manner along the length direction of the metal piece. The above method can further include the following steps:

[0085] The metal piece is bent along the first process notch part 1 once;

[0086] The metal piece is bent along the second process notch part 2 once.

[0087] It should be understood that the first process notch part 1 is located in the extension direction of the first preset folding line P1, and the second process notch part 2 is located in the extension direction of the second preset folding line P2.

[0088] In some embodiments, referring to Figure 12 A metal piece with uniform width can be used, and two notches can be machined on both sides of the metal piece as the first process notch part 1 and the second process notch part 2, and the two notches are arranged in a staggered manner along the length direction of the metal piece. The metal piece with uniform width has high interface consistency and uses less material. In order to reduce the influence of the notches on the structural strength of the pin member 13, after the metal piece is bent twice, welding can be performed at the positions of the notches, and the notches can be filled by melting the metal piece material or by welding material.

[0089] In order to reduce the influence of the notches on the strength of the metal piece, the range of the notches can be between 0.7mm and 1mm along the width direction of the metal piece, and exemplary values can be 0.7mm, 0.72mm, 0.75mm, 0.8mm, 0.85mm, 0.9mm, 1mm and any value between them.

[0090] In some embodiments, referring to Figure 15 A metal piece with varying width can also be used, and the corner positions where the width of the metal piece changes form the first process notch part 1 and the second process notch part 2.

[0091] In some embodiments, referring to Figure 16 ​Also can adopt one side width to change spare, the other side is provided with the metal piece of notch, carries out twice bending, to obtain the pin component 13 of above. The above embodiment of the utility model is introduced in detail, the principle and implementation mode of the utility model are described in this paper by applying specific examples, the above embodiment is only used for helping understanding the method and its core idea of the utility model; simultaneously, for the technical personnel of the field, according to the idea of the utility model, there will be changes in specific implementation mode and application range, and the above-mentioned, the content of the specification should not be understood as the limitation of the utility model.

Claims

1. A pin member characterized by, The tab connecting section comprises: a tab connecting section; an adapter section, which is connected to the tab connecting section in a bent manner and has a first included angle with the tab connecting section; a post connecting section, which is connected to the adapter section in a bent manner and is partially arranged in the adapter section.

2. The lead member of claim 1, wherein In the same projection plane perpendicular to the thickness direction of the post connecting section, the orthogonal projection of the adapter section is completely in the orthogonal projection of the post connecting section.

3. The lead member of claim 1, wherein The included angle between the extension direction of the post connecting section and the thickness direction of the tab connecting section ranges from 87° to 90°.

4. The lead member of claim 3, wherein The extension direction of the post connecting section is perpendicular to the thickness direction of the tab connecting section.

5. The lead member of claim 4, wherein, The adapter section and the post connecting section have a first crease therebetween, and the extension direction of the first crease has a second included angle with the extension direction of the post connecting section.

6. The lead member of claim 5, wherein, The second included angle ranges from 40° to 50°.

7. The lead member of any of claims 1-6, wherein, The post connecting section is located on the side of the adapter section facing the tab connecting section.

8. The lead member of claim 7, wherein, The post connecting section comprises a first section and a second section, the first section is connected to the adapter section in a bent manner and is arranged in the adapter section, the second section is connected to the first section and is located at a different height position than the first section along the thickness direction of the post connecting section to define a first avoiding slot, and the opening of the first avoiding slot faces the side of the post connecting section away from the adapter section.

9. The lead member of claim 8, wherein, The second section is provided with a post mounting hole, which penetrates the second section along the thickness direction of the post connecting section.

10. The lead member of claim 8, wherein, The adapter section has a first surface facing away from the first section, and the second section has a second surface facing away from the first avoiding slot, and the second surface is flush with the first surface.

11. The lead member of any of claims 1-6, wherein, The tab connecting section comprises a first flat section, a second flat section and a connecting section, the first flat section is connected to the adapter section in a bent manner, the connecting section is connected to one end of the first flat section away from the adapter section, and the second flat section is connected to one end of the connecting section away from the first flat section. The connecting section is arranged opposite to the adapter section, and the adapter section, the first flat section and the connecting section define a second avoiding slot.

12. The lead member of any of claims 1-6, wherein, The first included angle ranges from 87° to 92°.

13. A battery, characterized by The lead member of any one of claims 1-12. The lead member of any one of claims 1-12.

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