Collecting plate assembly and battery

Abstract

The invention relates to the technical field of batteries, and provides a collector plate assembly and a battery, the collector plate assembly comprises a collector plate body and a pole; the collector plate body comprises a butt joint part and an elastic connecting part which are arranged in the collector plate body; one end of the pole is correspondingly and fixedly connected to the butt joint part, and the other end of the pole protrudes outwards; the elastic connecting part is used for elastically connecting the butt joint part with the collector plate body; the elastic connecting part can elastically deform and drive the butt joint part to move towards or back to the collector plate body. The collector plate assembly comprises a roll core and the collector plate assembly, and the collector plate assembly is welded and fixed with the positive tab and / or the positive tab in the roll core through the collector plate body. The collector plate assembly and the battery can absorb and consume the stress during welding of the pole by virtue of the elastic deformation of the elastic connecting part, so that the collector plate body is prevented from bearing the welding stress, and the connection stability of the collector plate body and the roll core is not influenced by the welding process of the pole; and the installation stability and reliability among the roll core, the collector plate body and the pole can be fully ensured.

Description

Technical Field

[0001] The present disclosure relates to the technical field of batteries, and in particular to a collecting plate assembly and a battery. Background Art

[0002] Battery assembly is a key process in battery manufacturing. The commonly used manufacturing processes include: first, laser welding the positive electrode ear of the winding core to the positive electrode collector plate, and laser welding the negative electrode ear to the negative electrode collector plate; then laser welding the positive electrode collector plate to the positive electrode column, and putting the welded structure into the shell; then, laser welding the positive electrode column to the shell, the negative electrode collector plate to the shell, the negative electrode top cover to the shell, and the sealing pin to the negative electrode top cover, and finally completing the battery assembly.

[0003] Since the winding core and the collector disk are rigidly connected, when the winding core and the pole are laser welded, or when the height of the winding core changes due to long-term use of the battery, or when vibration occurs during use, the connection between the collector disk and the winding core will be subject to a certain amount of stress, which will affect the reliability of the connection between the winding core and the collector disk to a certain extent.

[0004] In view of this, there is an urgent need for a collector plate with a new structure in the market to solve the problem in the prior art that stress is easily generated during welding between the winding core and the collector plate, which affects the reliability of the connection between the winding core and the collector plate. Summary of the invention

[0005] The embodiments of the present disclosure provide a current collecting plate assembly and a battery, which are used to solve the problem in the prior art that stress is easily generated when welding the winding core and the current collecting plate, thereby affecting the connection reliability between the winding core and the current collecting plate.

[0006] The collector plate assembly provided in the embodiment of the present disclosure includes a collector plate body and a pole;

[0007] The collecting plate body includes a docking portion and an elastic connecting portion arranged in the collecting plate body;

[0008] One end of the pole is fixedly connected to the docking portion, and the other end protrudes outward away from the docking portion;

[0009] Wherein, the elastic connection part is used to elastically connect the docking part with the current collecting plate body;

[0010] The elastic connection portion can be elastically deformed and drive the docking portion to move toward or away from the current collecting plate body.

[0011] In one possible implementation, the elastic connecting portion includes a first sub-segment, a second sub-segment and a third sub-segment;

[0012] One end of the first sub-segment is connected to the periphery of the docking portion;

[0013] The second sub-segment is disposed as a whole along the radial direction of the current collecting plate body, and one end of the second sub-segment is connected to an end of the first sub-segment away from the docking portion;

[0014] One end of the third sub-segment is connected to an end of the second sub-segment away from the first sub-segment, and the other end is connected to the current collecting plate body;

[0015] When the elastic connection portion is subjected to force and elastically deformed, the first sub-segment and the third sub-segment can tilt toward or away from the current collecting disc body, and the second sub-segment can translate toward or away from the current collecting disc body.

[0016] In one embodiment, the end portion where the first sub-segment is connected to the second sub-segment is configured as a raised end that is bent away from the current collecting plate body;

[0017] The end portion of the second sub-segment connected to the third sub-segment is configured as a downwardly inclined end bent toward the collector plate body;

[0018] When the elastic connection portion is subjected to force and generates elastic deformation, the tilted end and the lower inclined end can change the angle between them and the current collecting plate body.

[0019] In one possible implementation manner, the collecting plate body is further provided with a hollow avoidance portion corresponding to the elastic connecting portion;

[0020] The first sub-segment, the second sub-segment and the third sub-segment can all be deformed to fill in the hollow avoidance portion, or deformed to protrude from the hollow avoidance portion.

[0021] In one possible implementation manner, the docking portion and the elastic connecting portion are integrally stamped and formed by a portion of the collecting plate body;

[0022] The hollow avoidance portion is formed by a punching notch after the current collecting plate body is punched.

[0023] In one possible implementation, a plurality of the elastic connecting parts are arranged in a circular array about the center of the docking part;

[0024] Furthermore, each of the elastic connecting parts can deform individually or simultaneously to drive the docking part to move toward or away from the collecting plate body.

[0025] In addition, an embodiment of the present disclosure further provides a battery, which includes a winding core and the above-mentioned current collecting plate assembly;

[0026] The current collecting plate assembly is fixed by welding the current collecting plate body to the positive pole ear and / or the negative pole ear in the winding core.

[0027] In one possible implementation, the battery further comprises an outer shell;

[0028] The outer shell is wrapped around the collector plate assembly and the outer part of the winding core;

[0029] The outer shell is also provided with an opening for the pole in the collecting plate assembly to extend out.

[0030] In one possible implementation, the battery further comprises an external pole;

[0031] The outer pole comprises a sleeve portion and an abutment portion;

[0032] The sleeve portion is sleeved on the end of the pole protruding from the outer shell;

[0033] The abutting portion is located in the outer shell and abuts against the docking portion in the current collecting plate body.

[0034] In one possible implementation, the battery further comprises an insulating member and a sealing member;

[0035] The insulating member is insulated and arranged between the outer shell and the current collecting plate body;

[0036] The sealing member is sealingly disposed between the outer shell opening and the outer pole.

[0037] Compared with the prior art, the technical solution provided by the embodiments of the present disclosure has the following advantages:

[0038] The collecting plate assembly provided by the embodiment of the present disclosure, by providing a docking portion for welding with the pole and an elastic connection portion for elastically connecting the docking portion in the collecting plate body, so that the welding stress generated during the welding of the pole and the collecting plate body can act on the elastic connection portion, and the elastic deformation of the elastic connection portion is relied on to absorb and consume the welding stress, thereby avoiding the collecting plate body from being subjected to welding stress, and ensuring that the connection stability between the collecting plate body and the winding core will not be affected by any influence of the welding process of the pole; and the extrusion external force applied to the pole during assembly or use can also be relieved to a certain extent through the elastic connection portion in the collecting plate body, thereby fully ensuring the installation stability and reliability among the winding core, the collecting plate body and the pole.

[0039] In addition, the battery provided by the embodiment of the present disclosure includes the above-mentioned current collecting plate assembly, which can achieve all the beneficial effects of the above-mentioned current collecting plate assembly and will not be described in detail here.

[0040] It should be understood that the content described in this section is not intended to identify the key or important features of the embodiments of the present disclosure, nor is it intended to limit the scope of the present disclosure. Other features of the present disclosure will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] The above and other objects, features and advantages of the exemplary embodiments of the present disclosure will become readily understood by reading the detailed description below with reference to the accompanying drawings. In the accompanying drawings, several embodiments of the present disclosure are shown in an exemplary and non-limiting manner, in which:

[0042] In the drawings, the same or corresponding reference numerals represent the same or corresponding parts.

[0043] Figure 1 A three-dimensional view of a current collecting plate assembly provided by an embodiment of the present disclosure is shown;

[0044] Figure 2 A top view of a current collecting plate assembly provided by an embodiment of the present disclosure is shown;

[0045] Figure 3 Shows Figure 2 Sectional view along AA direction;

[0046] Figure 4 A three-dimensional half-section view (partial) of a battery provided by an embodiment of the present disclosure is shown;

[0047] Figure 5 A vertical half-section view (partial) of a battery provided by an embodiment of the present disclosure is shown.

[0048] Explanation of the reference numerals in the figure: 1, collector plate body; 11, docking portion; 12, elastic connection portion; 121, first sub-segment; 121a, tilted end; 122, second sub-segment; 122a, lower oblique end; 123, third sub-segment; 13, hollow avoidance portion;

[0049] 2. Pole; 3. Outer shell; 4. Outer pole; 41. Socket connection portion; 42. Abutment portion;

[0050] 5. Insulating parts; 6. Sealing parts. DETAILED DESCRIPTION

[0051] In order to make the purpose, features, and advantages of the present disclosure more obvious and easy to understand, the technical solutions in the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings in the embodiments of the present disclosure. Obviously, the described embodiments are only part of the embodiments of the present disclosure, not all of the embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present disclosure.

[0052] The embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings.

[0053] Combination Figure 1 , Figure 2 and Figure 3As shown, an embodiment of the present disclosure provides a current collecting plate assembly, which includes a current collecting plate body 1 and a pole 2; the current collecting plate body 1 includes a docking portion 11 and an elastic connecting portion 12 arranged therein; one end of the pole 2 is fixedly connected to the docking portion 11, and the other end protrudes outward away from the docking portion 11; wherein the elastic connecting portion 12 is used to elastically connect the docking portion 11 to the current collecting plate body 1; the elastic connecting portion 12 can be elastically deformed and drive the docking portion 11 to move toward or away from the current collecting plate body 1.

[0054] When the current collecting plate assembly provided by the embodiment of the present disclosure is specifically assembled, the side of the current collecting plate body 1 facing away from the pole 2 can be used for rigid welding and fixing with the positive pole or negative pole in the winding core, and when the current collecting plate body 1 and the pole 2 are welded and fixed, one end of the pole 2 can be pre-assembled and docked concentrically with the docking part 11 in the current collecting plate body 1, and then the pole 2 and the docking part 11 can be welded and fixed by laser welding. Since the current collecting plate body 1 is also provided with an elastic connecting part 12 elastically connected to the docking part 11, and the elastic connecting part 12 can be elastically deformed and drive the docking part 11 to move toward or away from the current collecting plate body 1, the welding stress generated during the welding process of the pole 2 will act on the elastic connecting part 12, and cause the elastic connecting part 12 to produce elastic deformation accordingly, and drive the docking part 11 to move toward or away from the current collecting plate body 1, thereby avoiding the current collecting plate body 1 from being subjected to stress, and avoiding the welding process of the pole 2 from affecting the connection stability between the current collecting plate body 1 and the winding core.

[0055] To sum up, compared with the method in the prior art in which the two sides of the collecting plate are rigidly welded to the winding core and the pole respectively, the collecting plate assembly provided by the embodiment of the present disclosure, by providing a docking portion 11 for welding with the pole 2 in the collecting plate body 1, and an elastic connecting portion 12 elastically connecting the docking portion 11, so that the welding stress generated during the welding process of the pole 2 and the collecting plate body 1 can act on the elastic connecting portion 12, and the elastic deformation of the elastic connecting portion 12 is relied on to absorb and consume the welding stress, thereby avoiding the collecting plate body 1 from being subjected to welding stress, so that the connection stability between the collecting plate body 1 and the winding core will not be affected by any influence of the welding process of the pole 2.

[0056] In addition, during the assembly process of the collecting plate assembly, when the pole 2 is subjected to excessive assembly extrusion pressure, the elastic connection part 12 in the collecting plate body 1 can also unload the force to a certain extent when the collecting plate assembly is assembled and used; or when the collecting plate assembly is actually used, when the pole 2 is subjected to abnormal external impact and vibration, the elastic connection part 12 in the collecting plate body 1 can also unload the force to a certain extent; or when the winding core changes its height after long-term use, the winding core will generate a pulling force or top pressure on the collecting plate body 1, which can also unload the force to a certain extent through the elastic connection part 12 in the collecting plate body 1, so as to ensure the installation stability and reliability between the winding core, the collecting plate body 1 and the pole 2.

[0057] In one embodiment, the elastic connecting portion 12 includes a first sub-segment 121, a second sub-segment 122 and a third sub-segment 123; one end of the first sub-segment 121 is connected to the periphery of the docking portion 11; the second sub-segment 122 is arranged as a whole along the radial direction of the collecting plate body 1, and one end is connected to the end of the first sub-segment 121 away from the docking portion 11; one end of the third sub-segment 123 is connected to the end of the second sub-segment 122 away from the first sub-segment 121, and the other end is connected to the collecting plate body 1; wherein, when the elastic connecting portion 12 is subjected to force and produces elastic deformation, the first sub-segment 121 and the third sub-segment 123 can tilt toward or away from the collecting plate body 1, and the second sub-segment 122 can translate toward or away from the collecting plate body 1.

[0058] Specific, combined Figure 1 and Figure 3 To further explain in detail, the elastic connecting portion 12 is specifically configured to include a first sub-segment 121, a second sub-segment 122 and a third sub-segment 123 which are connected in sequence, and the second sub-segment 122 is arranged as a whole along the radial direction of the collecting disc body 1, so that the welding stress generated during the welding and fixing process of the pole 2 will act vertically on the second sub-segment 122 along the axial direction of the pole 2, causing it to translate toward or away from the collecting disc body 1, and the welding stress will also cause the first sub-segment 121 and the third sub-segment 123 to tilt toward or away from the collecting disc body 1 accordingly, so that the elastic connecting portion 12 as a whole can effectively generate deformation to absorb the welding stress, and at the same time, the elastic connecting portion 12 can fully drive the docking portion 11 and the pole 2 to move toward or away from the collecting disc body 1.

[0059] The specific configuration of the elastic connection portion 12 has the beneficial effects of being simple in structure and being able to effectively absorb the stress between the pole 2 and the collector plate body 1 .

[0060] Of course, the elastic connection portion 12 may also be configured as other structural forms, as long as it can adjust the distance between the pole 2 and the collector plate body 1 through elastic deformation.

[0061] In one embodiment, the end portion where the first sub-segment 121 and the second sub-segment 122 are connected is configured as a raised end 121a bent away from the collecting plate body 1; the end portion where the second sub-segment 122 and the third sub-segment 123 are connected is configured as a lower inclined end 122a bent toward the collecting plate body 1; when the elastic connecting portion 12 is subjected to force and produces elastic deformation, the raised end 121a and the lower inclined end 122a can change the angle between them and the collecting plate body 1.

[0062] Specific, combined Figure 1 and Figure 3 To further explain in detail, the end portion connecting the first sub-segment 121 and the second sub-segment 122 is set as a raised end 121a bent away from the collecting plate body 1, and the end portion connecting the second sub-segment 122 and the third sub-segment 123 is set as a lower inclined end 122a bent toward the collecting plate body 1, so that the second sub-segment 122 can protrude higher than the first sub-segment 121 and the third sub-segment 123 as a whole through the connection action of the raised end 121a and the lower inclined end 122a respectively, and when the connection portion 12 is subjected to force and produces elastic deformation, the raised end 121a and the lower inclined end 122a can simultaneously change the angle with the collecting plate body 1, so that the second sub-segment 122 can move toward or away from the collecting plate body 1 in an overall parallel manner.

[0063] Moreover, the width of the second sub-segment 122 can be set to be slightly smaller than the widths of the first sub-segment 121 and the third sub-segment 123 , so that the second sub-segment 122 can be more easily elastically deformed.

[0064] The specific configuration of the second sub-segment 122 has the beneficial effects of being simple in structure and being able to reliably generate deformation to drive the pole 2 to move.

[0065] In one embodiment, a hollow avoidance portion 13 corresponding to the elastic connecting portion 12 is further provided in the collecting plate body 1; the first sub-segment 121 , the second sub-segment 122 and the third sub-segment 123 can all be deformed to fill in the hollow avoidance portion 13 , or deformed to protrude from the hollow avoidance portion 13 .

[0066] Specific, combined Figure 1 and Figure 3 To further explain in detail, a hollow avoidance portion 13 corresponding to the elastic connecting portion 12 is specifically provided in the collecting disc body 1, and when the elastic connecting portion 12 is deformed by force, the first sub-segment 121, the second sub-segment 122 and the third sub-segment 123 in the elastic connecting portion 12 can all be deformed to fill in the hollow avoidance portion 13, or deformed to protrude from the hollow avoidance portion 13, thereby preventing the collecting disc body 1 from hindering the deformation amplitude of the elastic connecting portion 12, so that the elastic connecting portion 12 can drive the docking portion 11 and the pole 2 to have a larger deformation amplitude and absorb more welding stress of the pole 2.

[0067] The specific configuration of the hollow avoidance portion 13 has the beneficial effects of being simple in structure and being able to effectively ensure the deformation range of the elastic connection portion 12 .

[0068] In one embodiment, the docking portion 11 and the elastic connecting portion 12 are integrally formed by stamping a portion of the collecting plate body 1 ; and the hollow avoiding portion 13 is formed by a stamping notch after the collecting plate body 1 is stamped.

[0069] Specific, combined Figure 1 and Figure 2 To further explain in detail, the docking portion 11 and the elastic connecting portion 12 are both formed by integrally stamping a part of the collecting disc body 1, and the hollow avoidance portion 13 is formed by a stamping notch after the collecting disc body 1 is stamped. In this way, when processing and manufacturing the collecting disc body 1, the raw material blank is subjected to only one stamping process to simultaneously and synchronously process the docking portion 11, the elastic connecting portion 12 and the hollow avoidance portion 13, which greatly simplifies the production and preparation process of the collecting disc body 1, efficiently utilizes the raw material blank, and greatly reduces the processing and manufacturing cost.

[0070] In one embodiment, a plurality of elastic connection parts 12 are arranged in a ring array about the center of the docking part 11 ; and each elastic connection part 12 can deform individually or simultaneously to drive the docking part 11 to move toward or away from the collecting plate body 1 .

[0071] Specific, combined Figure 1 and Figure 2 To further explain in detail, at this time, three elastic connecting parts 12 are specifically arranged in a circular array about the center of the docking part 11, so that when the pole 2 transfers the welding stress to the docking part 11, the three elastic connecting parts 12 can be subjected to force simultaneously and synchronously, driving the docking part 11 and the pole 2 to move toward or away from the collecting plate body 1.

[0072] Moreover, when the pole 2 is subjected to an external force load in the radial direction of the collector plate body 1 , the three elastic connecting parts 12 can separately perform expansion and contraction deformation in the radial direction of the collector plate body 1 , and can also avoid the problem of the pole 2 being skewed under the action of external force to a certain extent.

[0073] In addition, the embodiment of the present disclosure further provides a battery, which includes a winding core and the above-mentioned current collecting plate assembly; the current collecting plate assembly is fixed by welding the current collecting plate body 1 to the positive electrode ear and / or the negative electrode ear in the winding core.

[0074] Specific, combined Figure 4 and Figure 5 In further detail, the battery includes a winding core, and the positive electrode ear or the negative electrode ear in the winding core can be welded and installed with the above-mentioned current collecting plate assembly at the same time or individually.

[0075] Since the battery includes the above-mentioned current collecting plate assembly, all the beneficial effects of the above-mentioned current collecting plate assembly can be achieved, which will not be further elaborated here.

[0076] In one possible implementation manner, the battery further comprises an outer shell 3; the outer shell 3 is wrapped around the outside of the collecting plate assembly and the winding core; the outer shell 3 also has an opening for the pole 2 in the collecting plate assembly to extend out.

[0077] Specific, combined Figure 4 and Figure 5 To further explain in detail, the battery also includes an outer shell 3, which can be specifically but not limited to a cylindrical shape, and the opening in the outer shell 3 can be specifically opened at the center of the circular end surface of the outer shell 3, so that when the outer shell 3 is correspondingly wrapped and sleeved on the outside of the collecting plate assembly and the winding core, the pole 2 in the collecting plate assembly can extend out of the outer shell 3 through the opening.

[0078] In one embodiment, the battery further includes an outer pole 4; the outer pole 4 includes a sleeve portion 41 and an abutment portion 42; the sleeve portion 41 is sleeved on the end of the pole 2 protruding from the outer shell 3; the abutment portion 42 is located in the outer shell 3 and abuts against the docking portion 11 in the collecting plate body 1.

[0079] Specific, combined Figure 4 and Figure 5 In further detail, the battery also includes an outer pole 4, and the outer pole 4 has a sleeve portion 41 and an abutment portion 42, so that the outer pole 4 can be sleeved on the end of the pole 2 protruding from the outer shell 3 through the sleeve portion 41 to achieve electrical connection with the pole 2; and the abutment portion 42 in the outer pole 4 can abut with the opening inserted into the outer shell 3 and with the docking portion 11 in the collector plate body 1, further ensuring a direct electrical connection path between the pole 2 and the collector plate body 1.

[0080] In one embodiment, the battery further includes an insulating member 5 and a sealing member 6 ; the insulating member 5 is insulatedly disposed between the outer shell 3 and the current collecting plate body 1 ; the sealing member 6 is sealingly disposed between the opening of the outer shell 3 and the outer pole 4 .

[0081] Specific, combined Figure 4 and Figure 5 To further explain in detail, the battery also includes an insulating member 5 and a sealing member 6. The insulating member 5 can have an insulating inner cylinder arranged to be located in the inner wall of the outer shell 3, so that the outer shell 3 and the collecting plate body 1 can be effectively insulated and separated by the insulating effect of the insulating member 5; the sealing member 6 can be specifically arranged as a riveted sealing member, which is riveted in the opening of the outer shell 3 to ensure that the outer shell 3 and the outer pole 4 can be riveted and assembled to form a sealing structure.

[0082] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present disclosure, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0083] The above are only specific embodiments of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present disclosure, which should be included in the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be based on the protection scope of the claims.

Claims

1. A collector plate assembly, characterized in that: include: The current collecting plate body (1) comprises a docking portion (11) and an elastic connecting portion (12) arranged therein; A pole (2), one end of which is fixedly connected to the docking portion (11) and the other end of which protrudes outward away from the docking portion (11); Wherein, the elastic connection portion (12) is used to elastically connect the docking portion (11) to the current collecting plate body (1); The elastic connection portion (12) is capable of elastic deformation and drives the docking portion (11) to move toward or away from the current collecting plate body (1).

2. The collector plate assembly according to claim 1, characterized in that: The elastic connecting portion (12) comprises: A first subsection (121), one end of which is connected to the periphery of the docking portion (11); A second sub-segment (122) is disposed as a whole along the radial direction of the current collecting plate body (1), and one end of the second sub-segment (122) is connected to an end of the first sub-segment (121) away from the docking portion (11); A third sub-segment (123), one end of which is connected to an end of the second sub-segment (122) away from the first sub-segment (121), and the other end of which is connected to the current collecting plate body (1); When the elastic connection portion (12) is subjected to force and generates elastic deformation, the first sub-segment (121) and the third sub-segment (123) can tilt toward or away from the collecting disc body (1), and the second sub-segment (122) can translate toward or away from the collecting disc body (1).

3. The collector plate assembly according to claim 2, characterized in that: The end portion where the first sub-segment (121) is connected to the second sub-segment (122) is arranged as a raised end (121a) that is bent away from the current collecting plate body (1); The end portion of the second sub-segment (122) connected to the third sub-segment (123) is arranged as a lower inclined end (122a) bent toward the collecting plate body (1); When the elastic connection portion (12) is subjected to force and produces elastic deformation, the raised end (121a) and the lower inclined end (122a) can change the angle between them and the current collecting plate body (1).

4. The collector plate assembly according to claim 2, characterized in that: The collecting plate body (1) is also provided with a hollow avoidance portion (13) corresponding to the elastic connecting portion (12); The first sub-segment (121), the second sub-segment (122) and the third sub-segment (123) are all capable of deforming to fill the hollow avoidance portion (13), or deforming to protrude from the hollow avoidance portion (13).

5. The collector plate assembly according to claim 1, characterized in that: The docking portion (11) and the elastic connecting portion (12) are integrally stamped from a portion of the collecting plate body (1); The hollow avoidance portion (13) is formed by a punching notch formed after the current collecting plate body (1) is punched.

6. The collector plate assembly according to claim 1, characterized in that: A plurality of the elastic connecting parts (12) are arranged in a ring array about the center of the docking part (11); Furthermore, each of the elastic connecting parts (12) can deform individually or simultaneously to drive the docking part (11) to move toward or away from the collecting plate body (1).

7. A battery, characterized in that: A collecting plate assembly comprising a winding core and any one of claims 1 to 6; The current collecting plate assembly is fixed by welding the current collecting plate body (1) to the positive pole ear and / or the negative pole ear in the winding core.

8. The battery according to claim 7, characterized in that The battery also includes an outer shell (3); The outer shell (3) is wrapped around the outside of the collecting plate assembly and the winding core; The outer shell (3) is also provided with an opening for the pole (2) in the current collecting plate assembly to extend out.

9. The battery according to claim 8, characterized in that The battery also includes an external pole (4); The outer pole (4) comprises a sleeve portion (41) and an abutment portion (42); The sleeve connection portion (41) is sleeved on the end of the pole (2) protruding from the outer shell (3); The abutment portion (42) is located in the outer shell (3) and abuts against the docking portion (11) in the current collecting plate body (1).

10. The battery according to claim 9, characterized in that The battery further comprises an insulating member (5) and a sealing member (6); The insulating member (5) is insulated and arranged between the outer shell (3) and the current collecting plate body (1); The sealing member (6) is sealingly arranged between the opening of the outer shell (3) and the outer pole (4).

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