Conductive part and battery

Abstract

The conductive piece comprises a first connecting part and a second connecting part, the second connecting part is connected to one end of the first connecting part, the second connecting part and the first connecting part are arranged at an angle, and the two opposite sides of the second connecting part are a containing face and a fixing face respectively. The other two opposite sides of the second connecting part are a first side face and a second side face respectively, the side, away from the fixing face, of the containing face is used for being matched with the roll core, and the end of the roll core bypasses the first side face and / or the second side face to be fixed to the fixing face. According to the conductive piece provided by the invention, the tab of the roll core is directly welded on the fixed surface of the conductive piece, a rivet and a tab clamping plate are omitted, the tab is connected without the processes of punching, riveting and the like, and the connecting process is simplified. Meanwhile, parts such as rivets, tab clamping plates and the like are omitted, so that the weight of the battery is reduced, the mounting space of the roll core is increased, and when the volume of the roll core is increased, the capacity of the battery can be further improved.

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; and

[0007] The second connecting part is connected to one end of the first connecting part and is set at an angle to the first connecting part. The opposite sides of the second connecting part are respectively a accommodating surface and a fixing surface, and the other opposite sides of the second connecting part are respectively a first side surface and a second side surface. The side of the accommodating surface away from the fixing surface is used to cooperate with the winding core, and the end of the winding core bypasses the first side surface and / or the second side surface and is fixed to the fixing surface.

[0008] Optionally, a first guiding portion is provided between the first side surface and the first connecting surface of the first connecting portion.

[0009] Optionally, the first guide portion comprises a chamfer or a rounded corner.

[0010] Optionally, a second guiding portion is provided between the second side surface and the second connecting surface of the first connecting portion.

[0011] Optionally, the second guide portion comprises a chamfer or a rounded corner.

[0012] Optionally, the first connecting portion and the second connecting portion are connected via a third guiding portion.

[0013] In a second aspect, the present application provides a battery, comprising the conductive element provided in the first aspect of the present application.

[0014] Optionally, the battery further comprises a holder, wherein the holder comprises a first plate body and a second plate body and a third plate body connected to two ends of the first plate body;

[0015] Two conductive members are symmetrically arranged, and the two second connecting parts of the two conductive members are respectively arranged to be aligned with the second plate body and the third plate body, and an accommodating space for placing the winding core is formed between the retaining frame and the conductive member.

[0016] Optionally, the end of the second connecting part away from the first connecting part is connected to the fourth connecting part through the third connecting part, and the fourth connecting part is used to fit with the second plate body or the third plate body so that a fitting gap is formed between the second connecting part and the second plate body or the third plate body that cooperate with the third connecting part.

[0017] Optionally, ribs are provided on opposite sides of the retaining frame.

[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 of the winding core to the fixed surface of the conductive member. When the tabs are connected, there is no need to go through the processes of drilling and riveting, which simplifies the connection process. At the same time, by eliminating parts such as rivets and tab clamps, the weight of the battery is reduced, the installation space of the winding core is increased, and when the volume of the winding core is increased, the capacity of the battery can be further improved. 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 parts;

[0027] 11. first connecting portion; 111. connecting hole;

[0028] 12. second connecting portion; 121. fixing surface; 122. first side surface;

[0029] 13. first guide portion; 14. second guide portion; 15. third guide portion; 16. third connecting portion; 17. fourth connecting portion;

[0030] 2. Retaining frame; 21. First plate body; 22. Second plate body; 23. Third plate body; 24. Electrolyte flow hole; 25. Rib. DETAILED DESCRIPTION

[0031] 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.

[0032] 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.

[0033] 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.

[0034] In order to solve the technical problems in the prior art that the connection process of the winding core and the large number of components lead to limited installation space of the winding core, the present application provides a conductive part and a battery, on which a fixing surface is provided, and the positive and negative pole tabs of the winding core can be directly welded to the conductive parts on both sides, eliminating components such as rivets and pole tab clamps, simplifying the connection process of the pole tabs, and increasing the installation space of the winding core.

[0035] See also Figure 1 In a first aspect, an embodiment of the present application provides a conductive member, comprising a first connecting portion 11 and a second connecting portion 12, wherein the second connecting portion 12 is connected to one end of the first connecting portion 11 and is arranged at an angle to the first connecting portion 11, and the opposite sides of the second connecting portion 12 are respectively a receiving surface and a fixing surface 121, and the other opposite sides of the second connecting portion 12 are respectively a first side surface 122 and a second side surface, and the side of the receiving surface away from the fixing surface 121 is used to cooperate with a winding core, and the end of the winding core is fixed on the fixing surface 121 by bypassing the first side surface 122 and / or the second side surface.

[0036] The present application directly fixes the tab of the winding core on the fixing surface 121 of the second connecting portion 12 of the conductive member 1, thereby eliminating the rivets and tab clamps. When connecting the tabs, there is no need to go through the processes of drilling and riveting, thereby simplifying the connection process of the tabs of the winding core. At the same time, by eliminating the rivets, tab clamps and other parts, the weight of the battery is reduced, the installation space of the winding core is increased, and when the volume of the winding core is increased, the capacity of the battery can be further improved.

[0037] In some embodiments of the present application, the first connection portion 11 and the second connection portion 12 are connected at an angle, wherein the first connection portion 11 is used to connect to the positive electrode column or the negative electrode column, and the second connection portion is used to connect to the pole ear of the winding core. Preferably, the angle between the first connection portion 11 and the second connection portion 12 is 90 degrees.

[0038] In addition, in order to reduce the connection stress between the first connection part 11 and the second connection part 12, the first connection part 11 and the second connection part 12 can be connected by the third guide part 15, so as to achieve a transition fit between the first connection part 11 and the second connection part 12. Optionally, the third guide part 15 includes a chamfer or a rounded corner.

[0039] In some embodiments of the present application, a connection hole 111 is opened on the first connection portion 11, and the connection hole 111 is used to embed the positive electrode column or the negative electrode column to achieve conduction between the conductive member 1 and the positive electrode column and / or the negative electrode column.

[0040] In some embodiments of the present application, the two opposite sides of the second connection portion 12 are respectively a receiving surface and a fixing surface 121, and the other two opposite sides of the second connection portion 12 are respectively a first side surface 122 and a second side surface, and the side of the receiving surface away from the fixing surface 121 is used to cooperate with the winding core, and the end of the winding core bypasses the first side surface 122 and / or the second side surface and is fixed on the fixing surface 121. The winding core is placed on the side of the receiving surface away from the fixing surface 121, and the tab of the winding core bypasses the first side surface 122 or the second side surface and is arranged on the fixing surface 121, and the tab is fixed by a fixed connection with the fixing surface 121. Optionally, the fixed connection includes welding cooperation, and of course, the fixed connection can also be in the form of bonding.

[0041] A first guide portion 13 is provided between the first side surface 122 and the first connecting surface of the first connecting portion 11. The first guide portion 13 can guide the tab of the winding core when winding the first side surface 122, thereby ensuring the reliability of the position of the tab of the winding core after winding. Optionally, the first guide portion 13 includes a chamfer or a rounded corner. In addition, the first guide portion 13 can also prevent the tab of the winding core from being damaged during the winding process.

[0042] A second guide portion 14 is provided between the second side surface and the second connecting surface of the first connecting portion 11. The second guide portion 14 can guide the tab of the winding core when winding the second side surface, thereby ensuring the reliability of the position of the tab of the winding core after winding. Optionally, the second guide portion 14 includes a chamfer or a rounded corner. In addition, the second guide portion 14 can also prevent the tab of the winding core from being damaged during the winding process.

[0043] In summary, the conductive component 1 provided in the present application can solve the technical problems in the prior art that the connection process of the winding core and the pole ears are complicated and the installation space of the winding core is limited due to the large number of components. The present application provides a conductive component 1 and a battery, and a fixing surface 121 is provided on the conductive component 1, and the positive and negative pole ears of the winding core can be directly welded to the conductive component 1 on both sides, eliminating components such as rivets and pole ear clamps, simplifying the connection process of the pole ears, and increasing the installation space of the winding core.

[0044] 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.

[0045] The battery also includes a retaining frame 2, which includes a first plate body 21 and a second plate body 22 and a third plate body 23 connected to both ends of the first plate body 21; two conductive members 1 are symmetrically arranged, and the two second connecting portions 12 of the two conductive members 1 are respectively arranged in alignment with the second plate body 22 and the third plate body 23, and an accommodating space for placing the winding core is formed between the retaining frame 2 and the conductive member 1.

[0046] The retaining frame 2 is generally similar to a U-shaped structure, the two conductive members 1 are symmetrically arranged, and the two second connecting portions 12 of the two conductive members 1 are respectively matched with the second plate 22 and the third plate 23 of the retaining frame 2, thereby forming a frame-type overall structure, and enclosing a receiving space, and the winding core is correspondingly arranged in the receiving space. Among them, the two ends of the first plate 21 are connected to the second plate 22 and the third plate 23 at an angle, and the angle includes an acute angle, a right angle or an obtuse angle. Optionally, the angle between the second plate 22 and the first plate 21 is a right angle, and the angle between the third plate 23 and the first plate 21 is also a right angle.

[0047] In order to reduce the connection stress, the first plate body 21 and the second plate body 22 are connected by chamfering or rounding transition, and the first plate body 21 and the third plate body 23 are connected by chamfering or rounding transition.

[0048] In some embodiments, the end of the second connection part 12 away from the first connection part 11 is connected to the fourth connection part 17 through the third connection part 16, and the fourth connection part 17 is used to fit with the second plate body 22 or the third plate body 23, so that a fitting gap is formed between the second connection part 12 and the second plate body 22 or the third plate body 23 that matches the third connection part 16. Optionally, the fitting gap is set to match the thickness of the pole lug. When welding the pole lug, the pole lug is folded to fit with the fixing surface 121 of the second connection part 12. After welding, the conductive member 1 is embedded in the retaining frame 2, and the second plate body 22 or the third plate body 23 of the retaining frame 2 is covered on the outside of the pole lug. The pole lug welded on the second connection part 12 is protected by the retaining frame 2, which can prevent the pole lug from being exposed to the outside after welding, affecting the stability and reliability of the pole lug connection.

[0049] Among them, the fourth connecting portion 17 is used to be arranged in affixed with the third plate body 23 or the second plate body 22, further improving the reliability of the guide member being arranged in the rear position in the retainer 2. Of course, since the thickness of the end of the pole ear is basically the same, the second connecting portion 12 and the fourth connecting portion 17 are optionally arranged in parallel, thereby ensuring the connection stress at each position after the pole ear is welded, and avoiding damage caused by pulling the pole ear.

[0050] In addition, the second connection part 12 is connected to the fourth connection part 17 through the third connection part 16, and the third connection part 16 is matched with the second connection part 12 at an angle, and the third connection part 16 is matched with the fourth connection part 17 at an angle. Optionally, the third connection part 16 is matched with one of the second connection part 12 and the fourth connection part 17 at an acute angle, and with the other at an obtuse angle, so that the second connection part 12, the third connection part 16 and the fourth connection part 17 form an N-shaped structure as a whole; of course, the third connection part 16 can also be matched with the second connection part 12 and the fourth connection part 17 at a right angle. In the present application, the third connection part 16 is matched with the second connection part 12 at an obtuse angle, and the third connection part 16 is matched with the fourth connection part 17 at an acute angle. The chamfered form of the third connection part 16 can also guide the tab located on the third connection part 16, so that the tab is guided to the second connection part 12 and welded to the fixing surface 121 of the second connection part 12 of the guide member, further improving the reliability of the tab welding position.

[0051] Since the retainer 2 is usually made of non-metallic materials, in some embodiments of the present application, the first plate body 21, the second plate body 22 and the third plate body 23 are an integrated structure and can be manufactured by an integral molding process. In order to protect the pole ear after welding, the retainer 2 is provided with ribs 25 on opposite sides, thereby forming three-sided protection for the winding core located in the accommodating space.

[0052] 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.

[0053] 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.

[0054] 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.

[0055] 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); as well as The second connecting portion (12) is connected to one end of the first connecting portion (11) and is arranged at an angle to the first connecting portion (11); the two opposite sides of the second connecting portion (12) are respectively a receiving surface and a fixing surface (121); the other two opposite sides of the second connecting portion (12) are respectively a first side surface (122) and a second side surface; the side of the receiving surface away from the fixing surface (121) is used to cooperate with the winding core; the end of the winding core bypasses the first side surface (122) and / or the second side surface and is fixed on the fixing surface (121).

2. The conductive member according to claim 1, characterized in that: A first guide portion (13) is provided between the first side surface (122) and the first connecting surface of the first connecting portion (11).

3. The conductive member according to claim 2, characterized in that: The first guide portion (13) comprises a chamfer or a rounded corner.

4. The conductive member according to claim 1, characterized in that: A second guide portion (14) is provided between the second side surface and the second connecting surface of the first connecting portion (11).

5. The conductive member according to claim 4, characterized in that: The second guide portion (14) comprises a chamfer or a rounded corner.

6. The conductive element according to any one of claims 1 to 5, characterized in that: The first connecting portion (11) and the second connecting portion (12) are connected via a third guiding portion (15).

7. A battery, characterized in that: Comprising the conductive element according to any one of claims 1 to 6.

8. The battery according to claim 7, characterized in that The battery further comprises a retaining frame (2), wherein the retaining frame (2) comprises a first plate body (21) and a second plate body (22) and a third plate body (23) connected to two ends of the first plate body (21); Two of the conductive members (1) are symmetrically arranged, and the two second connecting portions (12) of the two conductive members (1) are respectively arranged in alignment with the second plate body (22) and the third plate body (23), and an accommodating space for placing a winding core is formed between the retaining frame (2) and the conductive member (1).

9. The battery according to claim 8, characterized in that One end of the second connecting portion (12) away from the first connecting portion (11) is connected to a fourth connecting portion (17) via a third connecting portion (16); the fourth connecting portion (17) is used to fit with the second plate body (22) or the third plate body (23) so that a fitting gap is formed between the second connecting portion (12) and the second plate body (22) or the third plate body (23) that fit with the third connecting portion (16).

10. The battery according to claim 8, characterized in that The retaining frame (2) is provided with ribs (25) on opposite sides.

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