Conductive part and battery

Abstract

The utility model relates to a conductive piece and a battery, the conductive piece comprises a first connecting part, a second connecting part and a positioning part, and the first connecting part is used for being connected with a pole; the second connecting part is in angular connection with the first connecting part and is used for being welded with a tab of a roll core; the positioning part is used for being matched with a clamp, a fixing part is arranged on the clamp, and the positioning part and the fixing part are connected in an embedded mode to limit the conductive piece. According to the conductive piece provided by the invention, the tab is directly welded on the second connecting part of the conductive piece, and a rivet and a tab clamping plate are omitted, so that the tab does not need to be subjected to processes such as punching and riveting during connection, and the connecting process is simplified. Meanwhile, parts such as rivets and tab clamping plates are omitted, so that the weight of the battery is reduced, and the mounting space of the roll core is increased.

Description

Technical Field

[0001] The present application relates to the field of battery technology, and in particular to a conductive component and a battery. Background Art

[0002] In the production process of new energy power batteries, the core is the core component of the battery, responsible for storing and releasing electrical energy. The core is usually encapsulated inside the battery, and the positive and negative tabs on the core are responsible for transmitting current, so the stability and reliability of the tab connection must be ensured.

[0003] In the prior art, the connection of the winding core tabs first requires drilling holes in the tabs and tab connection blocks of the winding core, passing rivets through the through holes in the tabs and tab connection blocks, and then connecting the rivets and tab clamps through the riveting process, so that the tabs and tab connection blocks are fixedly connected, and then the tab connection blocks are connected to the poles. The connection process is relatively complicated and difficult to implement. At the same time, the installation space of the winding core is compressed by the rivets and tab clamps, resulting in the battery capacity being limited due to the small size of the winding core. Utility Model Content

[0004] The present application provides a conductive part and a battery to solve the technical problems in the prior art that the winding core and the pole ear connection process are complicated and the winding core installation space is limited due to the large number of components.

[0005] In a first aspect, the present application provides a conductive member, comprising:

[0006] A first connecting portion, used for connecting to a pole;

[0007] A second connection portion, connected to the first connection portion at an angle and used for welding to the tab of the winding core; and

[0008] The positioning part is used to cooperate with the clamp, the clamp is provided with a fixing part, and the positioning part is embedded and connected with the fixing part to limit the conductive member.

[0009] Optionally, the positioning portion is arranged on the second connecting portion.

[0010] Optionally, the positioning portion is located at an end of the second connecting portion away from the first connecting portion.

[0011] Optionally, the first connecting portion and the second connecting portion are connected at a right angle and surround a receiving area, wherein the receiving area is used to place the winding core.

[0012] Optionally, a surface of the second connection portion away from the winding core is a welding surface, and the second connection portion further comprises two side surfaces which are arranged opposite to each other, and the pole lug of the winding core is welded to the welding surface by bypassing one of the side surfaces.

[0013] Optionally, a first guide portion is provided between the side surface and the first connecting portion.

[0014] Optionally, the positioning portion includes a groove or a protrusion.

[0015] Optionally, two positioning portions are provided, and the two positioning portions are provided on opposite sides of the second connecting portion.

[0016] Optionally, the first connecting portion and the second connecting portion are connected via a second guiding portion.

[0017] In a second aspect, the present application provides a battery, comprising the conductive element provided in the first aspect of the present application.

[0018] The above technical solution provided by the embodiment of the present application has the following advantages compared with the prior art:

[0019] The conductive member provided in the embodiment of the present application eliminates rivets and tab clamps by directly welding the tabs to the second connection portion of the conductive member. The tabs do not need to be connected through drilling and riveting, thereby simplifying the connection process. At the same time, by eliminating rivets, tab clamps and other parts, the weight of the battery is reduced and the installation space of the winding core is increased. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0021] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0022] One or more embodiments are exemplarily described by pictures in the corresponding drawings, and these exemplified descriptions do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings represent similar elements, and unless otherwise stated, the figures in the drawings do not constitute proportional limitations.

[0023] Figure 1 A schematic diagram of the structure of a conductive member provided in an embodiment of the present application;

[0024] Figure 2 A schematic diagram of the structure of a battery holder provided in an embodiment of the present application.

[0025] Description of reference numerals:

[0026] 1. Conductive member; 11. First connecting portion; 111. Connecting hole;

[0027] 12. second connection portion; 121. welding surface; 122. side surface;

[0028] 13. Positioning portion; 14. First guide portion; 15. Second guide portion;

[0029] 2. Retaining frame; 21. First plate body; 22. Second plate body; 23. Third plate body; 24. Electrolyte flow hole; 25. Rib; 26. Third guide part. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0031] The disclosure below provides many different embodiments or examples to realize the different structures of the present application. In order to simplify the disclosure of the present application, the parts and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the present application. In addition, the present application can repeat reference numbers and / or letters in different examples. This repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed.

[0032] For ease of description, spatial relative terms may be used herein to describe the relative positional relationship or movement of one element or feature relative to another element or feature as shown in the figure, such as "inside", "outside", "inner side", "outer side", "below", "below", "above", "above", "front", "back", etc. Such spatial relative terms are intended to include different orientations of the device in use or operation in addition to the orientation depicted in the figure. For example, if the device in the figure undergoes a position flip or a posture change or a motion state change, then these directional indications also change accordingly, for example: an element described as "below other elements or features" or "below other elements or features" will subsequently be oriented as "above other elements or features" or "above other elements or features". Therefore, the example term "below..." may include both upper and lower orientations. The device may be otherwise oriented (rotated 90 degrees or in other directions) and the spatial relative descriptors used herein are interpreted accordingly.

[0033] In order to solve the technical problems in the prior art that the connection process of the winding core and the lugs is complicated and the installation space of the winding core is limited due to the large number of components, the present application provides a conductive part and a battery, on which a second connecting portion is provided, so that the positive and negative pole lugs of the winding core can be directly welded to the conductive parts on both sides, eliminating components such as rivets and lug clamps, simplifying the connection process of the lugs, and increasing the installation space of the winding core.

[0034] See also Figure 1 In a first aspect, an embodiment of the present application provides a conductive member, comprising a first connecting portion 11, a second connecting portion 12 and a positioning portion 13, wherein the first connecting portion 11 is used to connect to the pole; the second connecting portion 12 is connected to the first connecting portion 11 at an angle, and is used to be welded to the pole ear of the winding core; the positioning portion 13 is used to cooperate with a clamp, and a fixing portion is provided on the clamp, and the positioning portion 13 is embedded and connected with the fixing portion to limit the conductive member.

[0035] The first connection portion 11 is used to connect to the positive electrode column or the negative electrode column, and the second connection portion 12 is used to weld to the positive electrode tab or the negative electrode tab of the winding core, and the electrical connection between the electrode column and the tab of the winding core is achieved through the conductive member 1.

[0036] It should be noted that the present application eliminates rivets and tab clamps by directly welding the tabs to the second connection portion 12 of the conductive member 1, and does not require punching and riveting when connecting the tabs, thereby simplifying the connection process of the winding core tabs. At the same time, by eliminating rivets, tab clamps and other parts, the weight of the battery is reduced and the installation space of the winding core is increased.

[0037] In some embodiments of this application, please refer to Figure 1 The first connecting portion 11 is provided with a connecting hole 111, and the connecting hole 111 is used to embed the positive pole or the negative pole to achieve conduction between the conductive member 1 and the pole.

[0038] The pole lugs of the winding core are usually arranged on the left and right sides of the winding core. In order to realize the connection between the pole and the pole lug through the conductive member 1, in some embodiments of the present application, please refer to Figure 1 , the conductive part 12 includes a first connection part 11 and a second connection part 12 connected at an angle, wherein the connection angle between the first connection part 11 and the second connection part 12 can be adaptively selected according to different application scenarios and usage requirements. In addition, the connection position between the second connection part 12 and the first connection part 11 can also be selected according to different application scenarios and usage requirements. In the present application, as an example, the second connection part 12 is connected to the end of the first connection part 11; it can be known that in actual use, the second connection part 12 can also be connected to a middle position such as the first connection part 11. Similarly, in the present application, the angle between the first connection part 11 and the second connection part 12 is a right angle.

[0039] In some embodiments of this application, please refer to Figure 1 The first connecting portion 11 and the second connecting portion 12 are connected by a second guide portion 15. The second guide portion 15 is provided to guide the first connecting portion 11 and the second connecting portion 12 to achieve transitional connection, thereby reducing stress at the connection. The second guide portion 15 includes a rounded or chamfered structure.

[0040] In some embodiments of the present application, the positioning portion 13 is arranged on the second connecting portion 12, and the second connecting portion 12 is used for welding to the pole ear of the winding core. By arranging the positioning portion 13 on the second connecting portion 12, and the positioning portion 13 is used to cooperate with the clamp, the clamp can directly limit the second positioning portion 13, thereby further ensuring the reliability of the position of the second connecting portion 12 when welding the pole ear and the welding effect.

[0041] Optionally, the positioning portion 13 is located at an end of the second connection portion 12 away from the first connection portion 11, and the side of the second connection portion 12 close to the first connection portion 11 is used for welding connection with the pole ear of the winding core. Therefore, the positioning portion 13 is arranged at the end of the second connection portion 12 away from the first connection portion 11, which can achieve the coordination between the second connection portion 12 and the clamp and will not affect the welding between the second connection portion 12 and the pole ear.

[0042] In some embodiments of this application, please refer to Figure 1 The first connection part 11 and the second connection part 12 are connected at a right angle and surrounded by a receiving area, and the receiving area is used to place the core; the core is placed in the receiving area, and the pole lugs of the core are usually arranged on the left and right sides of the core, so the first connection part 11 is located above the core, and the second connection part 12 is located in the direction of the left and right sides of the core, so as to facilitate the welding between the second connection part 12 and the pole lugs of the core. In addition, the right-angle connection method reduces the pulling force on the core during welding and avoids damage to the core.

[0043] Optionally, a side of the second connection part 12 away from the winding core is a welding surface 121, and the second connection part 12 also includes two side surfaces 122 arranged opposite to each other, and the pole ear of the winding core is welded to the welding surface 121 by bypassing one of the side surfaces 122; the winding core is placed in the accommodating area, and the pole ear of the winding core is welded to the welding surface 121 of the second connection part 12 by bypassing one of the side surfaces 122, and can be welded and fixed to the welding surface 121 of the second connection part 12, so as to facilitate the welding operation.

[0044] A first guide portion 14 is provided between the side surface 122 and the first connecting portion 11, and the first guide portion 14 can guide the position of the winding core tab when the side surface 122 is wound, thereby ensuring the position of the tab after winding and further ensuring the welding position. The first guide portion 14 includes a rounded corner or chamfered structure.

[0045] In some embodiments of this application, please refer to Figure 1 , the positioning portion 13 includes a groove or a convex block, and correspondingly, the fixing portion on the fixture is a convex block or a groove that is embedded and matched with the positioning portion 13, that is, when the positioning portion 13 is a groove, the fixing portion is a convex block; when the positioning portion 13 is a convex block, the fixing portion is a groove. As an example, the positioning portion 13 in the present application is a groove. The positioning portion 13 can be formed on one of the side surfaces 122 of the second connecting portion 12, and the positioning portion 13 can also be arranged on the end surface of the second connecting portion 12 away from the first connecting portion 11.

[0046] Optionally, two positioning portions 13 are provided, and the two positioning portions 13 are provided on opposite sides of the second connecting portion 12; two positioning portions 13 are provided on the second connecting portion 12, and correspondingly, two fixing portions are provided on the clamp, and the two fixing portions respectively cooperate with the two positioning portions 13 to enhance the limiting effect of the clamp on the conductive member 1. Of course, the structures of the two positioning portions 13 can be the same or different, and similarly, the heights of the two positioning portions 13 on the second connecting portion 12 can also be the same or different, and can be adaptively selected according to different needs.

[0047] See also Figure 1 and Figure 2 In a second aspect of the embodiment of the present application, a battery is provided, including the conductive member 1 described in the above embodiment. It should be noted that one or more winding cores may be provided in each conductive member 1, which is not limited here. After the winding core is connected to the conductive member 1, the whole can be placed in a battery housing for packaging.

[0048] The battery also includes a holder 2, which has a first plate 21, a second plate 22 and a third plate 23, and the second plate 22 and the third plate 23 are vertically connected to both sides of the first plate 21. Since the holder 2 is usually made of non-metallic materials, the first plate 21, the second plate 22 and the third plate 23 are an integrated structure and can be made by an integral molding process. In order to protect the pole ear after welding, a rib 25 is provided on both sides of the width direction of the holder 2 to form three-sided protection for the pole ear.

[0049] In some embodiments of the present application, the first plate 21, the second plate 22 and the third plate 23 are provided with electrolyte flow holes 24, which can enable the electrolyte inside the battery to flow evenly through the winding core, thereby improving the charging and discharging performance and life of the battery.

[0050] There are two conductive members 1, which are symmetrically arranged. The first connecting parts 11 of the two conductive members 1 are used to connect to the positive pole and the negative pole respectively. The conductive member 1 is assembled in the retaining frame 2. The first connecting part 11 of the conductive member 1 is arranged opposite to the first plate 21. The two second connecting parts 12 of the two conductive members 1 are arranged opposite to the second plate 22 and the third plate 23 respectively. In order to facilitate the assembly of the conductive member 1 in the retaining frame 2, the corners of the second connecting part 12 away from the end of the first connecting part 11 are chamfered or rounded. In addition, the third guide part 26 is arranged at both ends of the retaining edge 25 of the retaining frame 2, and the third guide part 26 includes a chamfer or a rounded corner, so as to facilitate assembly and avoid assembly interference.

[0051] It should be understood that the terms used herein are only for the purpose of describing specific example embodiments and are not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms "one", "an" and "said" as used herein may also be meant to include plural forms. The terms "include", "comprise", "contain", and "have" are inclusive, and therefore specify the existence of stated features, steps, operations, elements and / or parts, but do not exclude the existence or addition of one or more other features, steps, operations, elements, parts, and / or combinations thereof. The method steps, processes, and operations described herein are not interpreted as necessarily requiring them to be performed in the specific order described or illustrated, unless the execution order is clearly indicated. It should also be understood that additional or alternative steps may be used.

[0052] Although the terms first, second, third, etc. can be used in the text to describe multiple elements, components, regions, layers and / or sections, these elements, components, regions, layers and / or sections should not be limited by these terms. These terms can only be used to distinguish an element, component, region, layer or section from another region, layer or section. Unless the context clearly indicates, terms such as "first", "second" and other numerical terms do not imply order or sequence when used in the text. Therefore, the first element, component, region, layer or section discussed below can be referred to as the second element, component, region, layer or section without departing from the teaching of the example embodiments.

[0053] The above description is only a specific implementation of the present application, so that those skilled in the art can understand or implement the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest range consistent with the principles and novel features applied for herein.

Claims

1. A conductive member, characterized in that: include: A first connecting portion (11), used for connecting to a pole; A second connecting portion (12) is connected to the first connecting portion (11) at an angle and is used for welding to the pole tab of the winding core; and The positioning portion (13) is used to cooperate with the clamp, the clamp is provided with a fixing portion, and the positioning portion (13) is embedded and connected with the fixing portion to limit the position of the conductive member.

2. The conductive member according to claim 1, characterized in that: The positioning portion (13) is arranged on the second connecting portion (12).

3. The conductive member according to claim 2, characterized in that: The positioning portion (13) is located at an end of the second connecting portion (12) away from the first connecting portion (11).

4. The conductive member according to claim 1, characterized in that: The first connecting portion (11) and the second connecting portion (12) are connected at a right angle and surround a receiving area, wherein the receiving area is used to place the winding core.

5. The conductive member according to claim 4, characterized in that: The side of the second connecting portion (12) away from the winding core is a welding surface (121), and the second connecting portion (12) further comprises two side surfaces (122) arranged opposite to each other, and the pole lug of the winding core is welded to the welding surface (121) by passing around one of the side surfaces (122).

6. The conductive member according to claim 5, characterized in that: A first guide portion (14) is provided between the side surface (122) and the first connecting portion (11).

7. The conductive member according to any one of claims 1 to 6, characterized in that: The positioning portion (13) comprises a groove or a protrusion.

8. The conductive member according to claim 7, characterized in that: Two positioning portions (13) are provided, and the two positioning portions (13) are arranged on opposite sides of the second connecting portion (12).

9. The conductive member according to claim 7, characterized in that: The first connecting portion (11) and the second connecting portion (12) are connected via a second guiding portion (15).

10. A battery, characterized in that: Comprising the conductive element according to any one of claims 1 to 9.

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