Battery and electric equipment

Abstract

The utility model provides a battery and electric equipment. The battery comprises a shell and an electrode connecting piece, the electrode connecting piece is connected with the shell, the first end of the electrode connecting piece extends in the first direction, the second end of the electrode connecting piece extends in the second direction, and an included angle larger than 0 degree is formed between the first direction and the second direction. And a bending space is formed between the first end of the electrode connecting piece and the second end of the electrode connecting piece. According to the battery provided by the invention, the first end of the electrode connecting piece is convenient to bend towards the second end of the electrode connecting piece, so that the battery is convenient to manufacture and mold.

Description

[0001] Cross-reference of related applications

[0002] This application requires filing with the Chinese Patent Office on December 9, 2024, application number [Application Number Missing].

[0003] Priority is claimed in Chinese patent application No. 202423033318.8, the entire contents of which are incorporated herein by reference. Technical Field

[0004] This application relates to the field of battery technology, specifically to batteries and electrical equipment. Background Technology

[0005] Batteries are widely used in energy storage systems, transportation, and consumer electronics. The battery terminals and the battery casing need to be connected together by a connecting structure.

[0006] The connection structure in related technologies is not conducive to battery manufacturing. Utility Model Content

[0007] The embodiments of this application provide a battery and an electrical device that can improve the technical problem of inconvenient battery manufacturing.

[0008] In a first aspect, embodiments of this application provide a battery, comprising:

[0009] case;

[0010] The electrode connector is connected to the housing;

[0011] The first end of the electrode connector extends along a first direction, and the second end of the electrode connector extends along a second direction. There is an angle greater than 0° between the first direction and the second direction, and a bending space is formed between the first end and the second end of the electrode connector.

[0012] In one embodiment, the electrode connector includes a first connecting segment and a second connecting segment, the first connecting segment extending in a second direction, the second connecting segment extending in a first direction, the second connecting segment connecting the first connecting segment and the housing, and the bending space being formed between the second connecting segment and the first connecting segment.

[0013] In one embodiment, the first end of the second connecting segment is connected to the first connecting segment, and the second end of the second connecting segment is bent or protruded relative to the first end of the second connecting segment in a direction away from the first connecting segment.

[0014] In one embodiment, the electrode connector further includes a third connecting segment, a first end of which is connected to the first connecting segment, a second end of which is connected to the second connecting segment, and the second end of which extends or protrudes in a direction away from the first connecting segment.

[0015] In one embodiment, the third connecting segment is a straight segment or a bent structure.

[0016] In one embodiment, the third connecting segment is tilted relative to the first connecting segment and / or the second connecting segment.

[0017] In one embodiment, the length of the third connecting segment along the radial direction of the housing is B12, where B12 ≥ 0.2 mm.

[0018] In one embodiment, along the axial direction of the housing, the shortest distance between the extended surface of the first connecting segment facing the second connecting segment and the surface of the second connecting segment facing the first connecting segment is B10, where B10 ≥ 0.3 mm.

[0019] In one embodiment, the battery further includes a tab connector and a package, wherein the tab connector connects the electrode connector and the tab of the battery;

[0020] The encapsulation portion is provided at least in a portion of the tab connector and / or at least in a portion of the electrode connector.

[0021] In one embodiment, the first connecting segment is stacked on the tab connector, and a first end of the first connecting segment is connected to the second connecting segment. Along the radial direction of the housing, the first end of the first connecting segment protrudes from the tab connector.

[0022] In one embodiment, the encapsulation portion is provided at the connection between the third connecting segment and the first connecting segment; and / or,

[0023] The encapsulation part is provided at the connection between the third connecting segment and the second connecting segment.

[0024] In one embodiment, a first end of the encapsulation portion extends along the surface of the first connecting segment toward the third connecting segment and contacts the third connecting segment, and a second end of the encapsulation portion extends along the surface of the first connecting segment toward the tab connector and contacts the tab connector.

[0025] In one embodiment, along the axial direction of the housing, the height of the contact position between the encapsulation portion and the third connecting segment is B2, where B2 ≥ 0.2 mm.

[0026] In one embodiment, along the axial direction of the housing, the length of the contact position between the encapsulation portion and the tab connector is B1, where B1 ≥ 0.3 mm.

[0027] In one embodiment, the first connecting segment is connected to the tab connector, and along a direction away from the tab connector, the third connecting segment extends toward the side wall of the housing at one end opposite to the first connecting segment and abuts against the side wall of the housing.

[0028] Secondly, embodiments of this application provide an electrical device including the battery described above.

[0029] The beneficial effects of the embodiments of this application are as follows:

[0030] In the embodiments of this application, the two ends of the electrode connector extend in different directions, and the angle between the extension direction of the first end and the extension direction of the second end of the electrode connector is greater than °, thus forming a bending space between the first end and the second end of the electrode connector, facilitating relative bending between them. The first end of the electrode connector can be connected to the housing, and the second end of the electrode connector can be directly or indirectly connected to the tab. During the battery molding process, the bending space between the first and second ends of the electrode connector facilitates bending of the first end towards the second end, thereby facilitating battery manufacturing. Attached Figure Description

[0031] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0032] Figure 1 This is a schematic diagram of the battery structure provided in an embodiment of this application;

[0033] Figure 2 This is a partial structural schematic diagram of the battery provided in an embodiment of this application;

[0034] Figure 3 This is a partial structural diagram of a battery provided in an embodiment of this application, wherein the third connecting segment is a bent structure;

[0035] Figure 4 This is provided by the embodiments of this application. Figure 3 A diagram with annotations;

[0036] Figure 5This is a partial structural diagram of a battery provided in an embodiment of this application, wherein the third connecting segment is a straight line segment. Detailed Implementation

[0037] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application. In addition, it should be understood that the specific embodiments described herein are only for illustration and explanation of this application and are not intended to limit this application. In this application, unless otherwise stated, directional terms such as "upper" and "lower" generally refer to the upper and lower positions of the device in actual use or operation, specifically the drawing directions in the accompanying drawings; while "inner" and "outer" refer to the outline of the device.

[0038] The following is combined Figures 1 to 5 This application describes the battery and electrical device.

[0039] According to the embodiments of the first aspect of this application, see [link / reference]. Figure 1 and Figure 2 The battery includes a housing 1 and an electrode connector 22, which are connected to the housing 1.

[0040] The first end of the electrode connector 22 extends along a first direction, and the second end of the electrode connector 22 extends along a second direction. There is an angle greater than 0° between the first direction and the second direction, and a bending space 220 is formed between the first end and the second end of the electrode connector 22.

[0041] According to the battery embodiment of this application, the two ends of the electrode connector 22 extend in different directions, and the angle between the extension direction of the first end of the electrode connector 22 and the extension direction of the second end of the electrode connector 22 is greater than 0°, thereby forming a bending space 220 between the first end and the second end of the electrode connector 22, which facilitates relative bending between the first end and the second end of the electrode connector 22. The first end of the electrode connector 22 can be connected to the housing 1, and the second end of the electrode connector 22 can be directly or indirectly connected to the tab. During the battery molding process, because there is a bending space 220 between the first end and the second end of the electrode connector 22, it is convenient for the first end of the electrode connector 22 to bend towards the second end of the electrode connector 22, thereby facilitating the manufacturing and molding of the battery.

[0042] It is understood that the bending space 220 refers to the space formed by the connecting line between the end of the first end of the electrode connector 22 and the end of the second end of the electrode connector 22, the portion of the first end of the electrode connector 22 extending in the first direction, and the portion of the second end of the electrode connector 22 extending in the second direction.

[0043] Understandably, during the battery manufacturing process, the casing 1 will have a recessed portion 12 that protrudes into the interior space of the casing 1. The first end of the electrode connector 22 is connected to the recessed portion 12, and the first end of the electrode connector 22 will bend as the recessed portion 12 protrudes. Therefore, this application forms a bending space 220 between the first end and the second end of the electrode connector 22, which facilitates the bending of the first end of the electrode connector 22 toward the second end, thus facilitating the bending and forming of the electrode connector 22 and consequently facilitating the battery manufacturing process.

[0044] It should be noted that after the electrode connector 22 is bent, the extension direction of the first end of the electrode connector 22 can be different from or the same as the extension direction of the second end of the electrode connector 22.

[0045] In some embodiments, see Figure 1 and Figure 2 The electrode connector 22 includes a first connecting segment 223 and a second connecting segment 224. The first connecting segment 223 extends in a second direction, and the second connecting segment 224 extends in a first direction. The second connecting segment 224 connects the first connecting segment 223 and the housing 1. A bending space 220 is formed between the second connecting segment 224 and the first connecting segment 223.

[0046] It is understandable that the second connecting segment 224 can be connected to the housing 1, and the first connecting segment 223 can be directly or indirectly connected to the tab. During the battery forming process, since there is a bending space 220 between the second connecting segment 224 and the first connecting segment 223, it is convenient for the second connecting segment 224 to bend towards the first connecting segment 223, thereby facilitating the battery manufacturing process.

[0047] In some embodiments, see Figure 1 and Figure 2 The first end of the second connecting segment 224 is connected to the first connecting segment 223. The second end of the second connecting segment 224 is bent or protruded away from the first end of the second connecting segment 223, thereby making the second end of the second connecting segment 224 and the first connecting segment 223 spaced apart, so that a bending space 220 is formed between the second end of the second connecting segment 224 and the first connecting segment 223, which facilitates the second end of the second connecting segment 224 to bend toward the first connecting segment 223.

[0048] In some embodiments, see Figure 3 and Figure 5 The electrode connector 22 also includes a third connecting segment 225, the first end of which is connected to the first connecting segment 223, the second end of which is connected to the second connecting segment 224, and the second end of which extends or protrudes away from the first connecting segment 223.

[0049] It is understandable that the second end of the third connecting segment 225 extends or protrudes away from the first connecting segment 223, and the second connecting segment 224 is connected to the second end of the third connecting segment 225. In this way, the third connecting segment 225 can increase the distance between the first connecting segment 223 and the second connecting segment 224, so that the first connecting segment 223 and the second connecting segment 224 are spaced apart, thereby expanding the bending space 220 between the first connecting segment 223 and the second connecting segment 224, which makes it easier for the second connecting segment 224 to bend toward the first connecting segment 223.

[0050] In some examples, see Figure 3 and Figure 5 The third connecting segment 225 is, for example, a straight segment or a bent structure.

[0051] In some embodiments, the third connecting segment 225 is inclined relative to the first connecting segment 223 and / or the second connecting segment 224, so that while increasing the distance between the first connecting segment 223 and the second connecting segment 224, the third connecting segment 225 can reduce the overall height of the electrode connector 22, which is beneficial for the miniaturization design of the battery.

[0052] In some embodiments, see Figure 3 and Figure 4 Along the radial direction of the housing 1, the length of the third connecting segment 225 is B12, B12≥0.2mm.

[0053] It is understandable that setting the radial length of the third connecting segment 225 to be greater than 0.2 mm can effectively increase the radial distance between the first connecting segment 223 and the second connecting segment 224, thereby increasing the bending space 220 between the first connecting segment 223 and the second connecting segment 224, which facilitates the second connecting segment 224 bending towards the first connecting segment 223.

[0054] In some embodiments, see Figure 3 and Figure 4Along the axial direction of the housing 1, the shortest distance between the extended surface of the first connecting segment 223 facing the second connecting segment 224 and the surface of the second connecting segment 224 facing the first connecting segment 223 is B10, where B10 ≥ 0.3 mm. This ensures the axial distance between the first connecting segment 223 and the second connecting segment 224, and ensures that the axial height of the bending space 220 between the first connecting segment 223 and the second connecting segment 224 is not too low, allowing the second connecting segment 224 to bend towards the first connecting segment 223.

[0055] In some embodiments, see Figure 1 , Figure 2 , Figure 3 and Figure 5 The battery also includes a tab connector 23 and a package 3, wherein the tab connector 23 connects the electrode connector 22 and the battery tabs;

[0056] At least some of the tab connectors 23 and / or at least some of the electrode connectors 22 are provided with an encapsulation portion 3.

[0057] It is understandable that the housing 1, electrode connector 22, electrode tab connector 23 and electrode tab are connected in sequence to connect the housing 1 and the electrode tab together using the electrode connector 22 and electrode tab connector 23.

[0058] By providing an encapsulation portion 3 at at least a portion of the tab connector 23, the position of the tab connector 23 with the encapsulation portion 3 can avoid contact with other substances (such as electrolyte) under the action of the encapsulation portion 3, making the position of the tab connector 23 with the encapsulation portion 3 less prone to corrosion, effectively slowing down the corrosion rate of the entire tab connector 23, improving the structural stability of the tab connector 23, and thus improving the structural stability of the battery.

[0059] By providing an encapsulation portion 3 at at least a portion of the electrode connector 22, the position of the electrode connector 22 with the encapsulation portion 3 can avoid contact with other substances (such as electrolyte) under the action of the encapsulation portion 3, making the position of the electrode connector 22 with the encapsulation portion 3 less prone to corrosion, effectively slowing down the corrosion rate of the entire electrode connector 22, improving the structural stability of the electrode connector 22, and thus improving the structural stability of the battery.

[0060] It is understood that the encapsulation portion 3 is provided at least partially on the electrode connector 22, which means that the encapsulation portion 3 is provided at the connection between the electrode connector 22 and the housing 1. The encapsulation portion 3 can prevent impurities from entering the connection between the electrode connector 22 and the housing 1, and avoid impurities affecting the connection strength between the electrode connector 22 and the housing 1.

[0061] It is understood that providing an encapsulation portion 3 at at least some of the electrode connectors 22 and / or providing an encapsulation portion 3 at at least some of the tab connectors 23 means that the encapsulation portion 3 is provided at the connection between the electrode connector 22 and the tab connector 23. The encapsulation portion 3 can prevent impurities from entering the connection between the electrode connector 22 and the tab connector 23, and avoid impurities affecting the connection strength between the electrode connector 22 and the tab connector 23.

[0062] In some embodiments, see Figure 1 and Figure 2 The first connecting segment 223 is stacked on the tab connector 23. The first end of the first connecting segment 223 is connected to the second connecting segment 224. Along the radial direction of the housing 1, the first end of the first connecting segment 223 protrudes from the tab connector 23, so that a space for accommodating the encapsulation part 3 is formed between the first end of the first connecting segment 223 and the tab connector 23, thereby facilitating the installation of the encapsulation part 3.

[0063] In some embodiments, see Figure 3 and Figure 5 An encapsulation part 3 is provided at the connection between the third connecting segment 225 and the first connecting segment 223. The encapsulation part 3 can prevent impurities (electrolyte) from entering the connection between the third connecting segment 225 and the first connecting segment 223, avoid corrosion at the connection between the third connecting segment 225 and the first connecting segment 223 due to impurities, and ensure the connection strength between the third connecting segment 225 and the first connecting segment 223.

[0064] In some embodiments, an encapsulation portion 3 is provided at the connection between the third connecting segment 225 and the second connecting segment 224. The encapsulation portion 3 can prevent impurities (electrolyte) from entering the connection between the third connecting segment 225 and the second connecting segment 224, avoid corrosion at the connection between the third connecting segment 225 and the second connecting segment 224 due to impurities, and ensure the connection strength between the third connecting segment 225 and the second connecting segment 224.

[0065] In some embodiments, the first end of the encapsulation portion 3 extends along the surface of the first connecting segment 223 toward the third connecting segment 225 and contacts the third connecting segment 225, and the second end of the encapsulation portion 3 extends along the surface of the first connecting segment 223 toward the tab connector 23 and contacts the tab connector 23. Thus, the first connecting segment 223, the third connecting segment 225 and the tab connector 23 simultaneously contact the encapsulation portion 3, so that the encapsulation portion 3 can effectively encapsulate and protect the connection between the first connecting segment 223 and the third connecting segment 225 and the connection between the first connecting segment 223 and the tab connector 23, and prevent corrosion at the connection.

[0066] In some embodiments, see Figure 3 and Figure 4Along the axial direction of the housing 1, the height of the contact position between the encapsulation part 3 and the third connecting section 225 is B2, B2≥0.2mm, so that the encapsulation part 3 can effectively encapsulate and protect the connection between the third connecting section 225 and the first connecting section 223, preventing impurities from entering the connection between the third connecting section 225 and the first connecting section 223.

[0067] In some embodiments, see Figure 3 and Figure 4 Along the axial direction of the housing 1, the length of the contact position between the encapsulation part 3 and the tab connector 23 is B1, B1≥0.3mm, so that the encapsulation part 3 can effectively encapsulate and protect the connection between the tab connector 23 and the first connecting segment 223, preventing impurities from entering the connection between the tab connector 23 and the first connecting segment 223.

[0068] In some embodiments, the first connecting segment 223 is connected to the tab connector 23, and along a direction away from the tab connector 23, the third connecting segment 225 extends towards the side wall of the housing 1 at one end opposite to the first connecting segment 223 and abuts against the side wall of the housing 1. Thus, the third connecting segment 225 allows the tab connector 23 and the side wall of the housing 1 to be spaced apart, preventing contact between the tab connector 23 and the side wall of the housing 1.

[0069] In some embodiments, the battery includes a connector 2 and a package 3. The connector 2 has an electrode connector 22 and a tab connector 23. The electrode connector 22 is used to connect the electrodes of the battery, and the tab connector 23 is used to connect the tabs of the battery.

[0070] At least a portion of the encapsulation portion 3 is disposed at the connection between the electrode connector 22 and the tab connector 23, and / or at least a portion of the encapsulation portion 3 is disposed at the connection between the electrode connector 22 and the electrode of the battery.

[0071] According to the battery embodiments of this application, by providing an encapsulation portion 3 at the connection between the electrode connector 22 and the tab connector 23, the encapsulation portion 3 can prevent impurities from entering the connection between the electrode connector 22 and the tab connector 23, avoiding impurities from affecting the connection strength between the electrode connector 22 and the tab connector 23, improving the connection stability between the electrode connector 22 and the tab connector 23, improving the structural stability of the connector 2, and thus improving the connection stability between the battery tab and the battery electrode. By providing an encapsulation portion 3 at the connection between the electrode connector 22 and the electrode, the encapsulation portion 3 can prevent impurities from entering the connection between the electrode connector 22 and the electrode, avoiding impurities from affecting the connection strength between the electrode connector 22 and the electrode, improving the connection stability between the electrode connector 22 and the electrode, and thus improving the connection stability between the battery tab and the battery electrode.

[0072] In some embodiments, the electrodes of the battery include the battery casing or battery terminals.

[0073] Understandably, when the battery electrode is the battery casing, the electrode connector 22 is connected to the battery casing, that is, connector 2 connects the battery casing and the battery tabs. When the battery electrode is the battery terminal, the electrode connector 22 is connected to the battery terminal, that is, connector 2 connects the battery terminal and the battery tabs.

[0074] In some examples, the impurity is, for example, the electrolyte.

[0075] In some examples, the encapsulation part 3 is provided at least part of the connector 2. The encapsulation part 3 may be provided at the bend of the connector 2, or the entire connector 2 may be provided with the encapsulation part 3, or the encapsulation part 3 may be provided at the end of the connector 2 that connects to the housing 1.

[0076] In some examples, at least a portion of the encapsulation portion 3 is disposed at the connection between the connector 2 and the housing 1. This means that a portion of the encapsulation portion 3 is disposed at the connection between the connector 2 and the housing 1, while another portion of the encapsulation portion 3 is disposed at other locations on the connector 2.

[0077] In some examples, at least a portion of the encapsulation part 3 is provided at the connection between the connector 2 and the housing 1. This can mean that the encapsulation part 3 is provided around the connection between the connector 2 and the housing 1, or that the encapsulation part 3 is provided covering the connection between the connector 2 and the housing 1.

[0078] In some examples, the encapsulation part 3 is, for example, an encapsulating adhesive, the material of which is polyurethane, epoxy resin, anaerobic adhesive, UV adhesive, acrylic, hot melt adhesive, etc., and the elastic modulus of the encapsulating adhesive is between 0.1 GPa and 6 GPa.

[0079] Specifically, an encapsulation part 3 is provided at the connection between the electrode connector 22 and the battery electrode.

[0080] It is understandable that by providing an encapsulation part 3 at the connection between the electrode connector 22 and the battery electrode, the encapsulation part 3 can prevent the connection between the electrode connector 22 and the battery electrode from contacting other substances, thus avoiding the influence of other substances on the connection strength between the electrode connector 22 and the battery electrode, ensuring the connection strength between the electrode connector 22 and the electrode, improving the stability of the connection between the electrode connector 22 and the electrode, and thereby enabling the connector 2 to stably connect the electrode and the tab, improving the stability of the connection between the electrode and the tab.

[0081] Specifically, an encapsulation part 3 is provided at the connection between the electrode connector 22 and the tab connector 23.

[0082] It is understandable that by providing an encapsulation part 3 at the connection between the electrode connector 22 and the tab connector 23, the encapsulation part 3 can prevent the connection between the electrode connector 22 and the tab connector 23 from contacting other substances, thus avoiding the connection strength between the electrode connector 22 and the tab connector 23 being affected by other substances, ensuring the connection strength between the electrode connector 22 and the tab connector 23, improving the structural stability of the connector 2, and thereby enabling the connector 2 to stably connect the battery electrode and the tab, improving the stability of the connection between the battery electrode and the tab.

[0083] Specifically, the electrode connector 22 and the tab connector 23 simultaneously contact the encapsulation part 3.

[0084] Understandably, at the connection between electrode connector 22 and tab connector 23, a portion of the encapsulation part 3 contacts electrode connector 22, and another portion of the encapsulation part 3 contacts tab connector 23. This ensures that the encapsulation part 3 can effectively encapsulate the connection between electrode connector 22 and tab connector 23, effectively preventing impurities from entering the connection between electrode connector 22 and tab connector 23, and improving the connection stability of electrode connector 22 and tab connector 23.

[0085] For example, the encapsulation part 3 has at least two connecting surfaces. At the connection between the electrode connector 22 and the tab connector 23, one of the connecting surfaces of the encapsulation part 3 contacts the electrode connector 22, and the other connecting surface of the encapsulation part 3 contacts the tab connector 23.

[0086] Specifically, the electrode connector 22 and the battery electrode are in contact with the encapsulation part 3 at the same time.

[0087] Understandably, at the connection between the electrode connector 22 and the battery electrode, a portion of the encapsulation part 3 contacts the electrode connector 22, and another portion of the encapsulation part 3 contacts the electrode. This ensures that the encapsulation part 3 can effectively encapsulate the connection between the electrode connector 22 and the electrode, effectively preventing impurities from entering the connection between the electrode connector 22 and the electrode, and improving the connection stability between the electrode connector 22 and the electrode.

[0088] For example, the encapsulation part 3 has at least two connection surfaces. At the connection between the electrode connector 22 and the electrode, one of the connection surfaces of the encapsulation part 3 contacts the electrode connector 22, and the other connection surface of the encapsulation part 3 contacts the electrode.

[0089] In some embodiments, the battery includes a housing 1, and an encapsulation portion 3 is provided at the connection between the electrode connector 22 and the housing 1.

[0090] It is understandable that the encapsulation part 3 can prevent impurities from entering the connection between the electrode connector 22 and the housing 1, and avoid impurities affecting the connection strength between the electrode connector 22 and the housing 1.

[0091] Specifically, the encapsulation part extends to the side wall of the housing and abuts against the side wall of the housing, so that the encapsulation part can effectively encapsulate the connection between the electrode connector 22 and the housing 1, preventing impurities from entering the connection between the electrode connector 22 and the housing 1.

[0092] In some embodiments, the tab connector 23 is spaced apart from the housing 1.

[0093] It is understandable that the tab connector 23 is spaced apart from the housing 1, and the tab connector 23 will not directly contact the housing 1, which reduces the connection points between the connector 2 and the housing 1 and avoids corrosion and other problems caused by the tab connector 23 contacting the housing 1.

[0094] In some examples, electrode connector 22 is connected to tab connector 23 by surface chemical treatment methods, such as electroplating, electroless plating, or spraying. It can also be connected to tab connector 23 by surface physical treatment methods, such as composite metal stamping.

[0095] In some examples, the tab connector 23 and the electrode connector 22 can be connected together by welding, cold heading, hot bonding, jointing, riveting, heat shrink tubing, etc. The electrode connector 22 and the housing 1 can be connected by laser welding, spot welding, resistance welding, etc.

[0096] In some examples, the tab connector 23 includes a first contact surface that contacts the electrode connector 22, and the electrode connector 22 includes a second contact surface that contacts the tab connector 23. The first and / or second contact surfaces are provided with raised / grooved / rough / embossed structures to increase the contact area between the tab connector 23 and the electrode connector 22.

[0097] In some examples, the tab connector 23 is made of copper, for example, and the electrode connector 22 is made of nickel-plated steel strip, nickel strip, or stainless steel, for example.

[0098] In some embodiments, one of the battery casing 1, electrode connector 22, and tab connector 23 is a first metal component, and the other two are second metal components. The first metal component and the second metal component are made of different metal materials, and an encapsulation portion 3 is provided at the connection between the first metal component and the second metal component. Where the first metal material is used and the second metal material is used, the first metal material and the second metal material are different.

[0099] It is understandable that by providing an encapsulation part 3 at the connection between the first metal part and the second metal part, that is, by providing an encapsulation part 3 at the contact position of different metal materials, the encapsulation part 3 can prevent the connection between the first metal part and the second metal part from contacting other substances (such as electrolyte), making the connection between the first metal part and the second metal part less prone to corrosion, thereby improving the structural stability of the connector 2 or the connection between the connector 2 and the housing 1, so that the connector 2 can stably connect the housing 1 and the tab.

[0100] It is understandable that the housing 1, electrode connector 22 and tab connector 23 contain two different metal materials, which can effectively ensure the stability of the connection between the connector 21 and the housing 1.

[0101] For example, the first metal part is made of a first metal material, and the second metal part is made of a second metal material, and the first metal material and the second metal material are different.

[0102] It should be noted that a metallic material consists of multiple metal atoms. Two metallic materials each consist of two sets of metal atoms. If even one metal atom in one set differs from the other, the two metallic materials can be considered different. In other words, if the first and second metallic materials do not have completely identical metal atoms—meaning they differ by even one metal atom—they can be considered different.

[0103] The metal material can be pure metal, alloy, or metal-based composite material with one or more insoluble solid particles added.

[0104] Metallic materials can have a multi-layered structure. For example, a metallic material may include a substrate and a metal layer disposed on the substrate. The metal layer can be formed on the substrate by methods such as electroplating or CVD. The metal layer can be a pure metal, an alloy, or a metal-based composite material with one or more insoluble solid particles added.

[0105] Specifically, electrode connector 22 and electrode tab connector 23 are both second metal parts, housing 1 is a first metal part, and an encapsulation part 3 is provided at the connection between electrode connector 22 and housing 1.

[0106] It is understandable that the electrode connector 22 and the housing 1 are made of different metal materials. By providing an encapsulation part 3 at the connection between the electrode connector 22 and the housing 1, the encapsulation part 3 can prevent the connection between the electrode connector 22 and the housing 1 from contacting other substances, so that the connection between the electrode connector 22 and the housing 1, i.e. the connection between different metal materials, is not prone to corrosion, thereby improving the connection stability between the electrode connector 22 and the housing 1, and enabling the connector 2 to stably connect the housing 1 and the tab.

[0107] Specifically, the electrode connector 22 and the housing 1 are both second metal parts, the tab connector 23 is a first metal part, and an encapsulation part 3 is provided at the connection between the electrode connector 22 and the tab connector 23.

[0108] It is understandable that the electrode connector 22 and the tab connector 23 are made of different metal materials. By providing an encapsulation part 3 at the connection between the electrode connector 22 and the tab connector 23, the encapsulation part 3 can prevent the connection between the electrode connector 22 and the tab connector 23 from contacting other substances. This makes the connection between the electrode connector 22 and the tab connector 23, i.e. the connection between different metal materials, less prone to corrosion. This improves the connection stability between the electrode connector 22 and the tab connector 23, and improves the structural stability of the connector 2, so that the connector 2 can stably connect the housing 1 and the tab.

[0109] For example, the electrode assembly includes at least a core.

[0110] According to an embodiment of the second aspect of this application, the electrical device includes the battery described above.

[0111] According to the electrical device of this application embodiment, the two ends of the electrode connector 22 extend in different directions, and the angle between the extension direction of the first end of the electrode connector 22 and the extension direction of the second end of the electrode connector 22 is greater than 0°, so that a bending space 220 is formed between the first end and the second end of the electrode connector 22, which facilitates relative bending between the first end and the second end of the electrode connector 22. The first end of the electrode connector 22 can be connected to the housing 1, and the second end of the electrode connector 22 can be directly or indirectly connected to the tab. During the battery molding process, since there is a bending space 220 between the first end and the second end of the electrode connector 22, it is convenient for the first end of the electrode connector 22 to bend towards the second end of the electrode connector 22, thereby facilitating the manufacturing and molding of the battery.

[0112] It should be noted that electrical equipment can be vehicles, aircraft, or household appliances. It is important to note that the above examples are merely illustrative and do not impose any specific limitations on the types of electrical equipment used.

[0113] The embodiments of this application have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this application. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of this application. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this application. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. A battery, characterized in that, include: case; The electrode connector is connected to the housing; The first end of the electrode connector extends along a first direction, and the second end of the electrode connector extends along a second direction. There is an angle greater than 0° between the first direction and the second direction, and a bending space is formed between the first end and the second end of the electrode connector.

2. The battery according to claim 1, characterized in that, The electrode connector includes a first connecting segment and a second connecting segment. The first connecting segment extends in a second direction, and the second connecting segment extends in a first direction. The second connecting segment connects the first connecting segment and the housing. A bending space is formed between the second connecting segment and the first connecting segment.

3. The battery according to claim 2, characterized in that, The first end of the second connecting segment is connected to the first connecting segment, and the second end of the second connecting segment is bent or protruded in a direction away from the first connecting segment relative to the first end of the second connecting segment.

4. The battery according to claim 2, characterized in that, The electrode connector further includes a third connecting segment, the first end of which is connected to the first connecting segment, the second end of which is connected to the second connecting segment, and the second end of which extends or protrudes away from the first connecting segment.

5. The battery according to claim 4, characterized in that, The third connecting segment is either a straight segment or a bent structure.

6. The battery according to claim 4, characterized in that, The third connecting segment is tilted relative to the first connecting segment and / or the second connecting segment.

7. The battery according to claim 4, characterized in that, Along the radial direction of the housing, the length of the third connecting segment is B12, where B12 ≥ 0.2 mm.

8. The battery according to claim 4, characterized in that, Along the axial direction of the housing, the shortest distance between the extended surface of the first connecting segment facing the second connecting segment and the surface of the second connecting segment facing the first connecting segment is B10, where B10 ≥ 0.3 mm.

9. The battery according to any one of claims 4 to 8, characterized in that, The battery also includes a tab connector and a package, wherein the tab connector connects the electrode connector and the tab of the battery; The encapsulation portion is provided at least in a portion of the tab connector and / or at least in a portion of the electrode connector.

10. The battery according to claim 9, characterized in that, The first connecting segment is stacked on the tab connector, and the first end of the first connecting segment is connected to the second connecting segment. Along the radial direction of the housing, the first end of the first connecting segment protrudes from the tab connector.

11. The battery according to claim 9, characterized in that, The encapsulation portion is provided at the connection between the third connecting segment and the first connecting segment; and / or... The encapsulation part is provided at the connection between the third connecting segment and the second connecting segment.

12. The battery according to claim 9, characterized in that, The first end of the encapsulation portion extends along the surface of the first connecting segment toward the third connecting segment and contacts the third connecting segment, and the second end of the encapsulation portion extends along the surface of the first connecting segment toward the tab connector and contacts the tab connector.

13. The battery according to claim 12, characterized in that, Along the axial direction of the housing, the height of the contact position between the encapsulation part and the third connecting section is B2, where B2 ≥ 0.2 mm.

14. The battery according to claim 12, characterized in that, Along the axial direction of the housing, the length of the contact position between the encapsulation part and the tab connector is B1, where B1 ≥ 0.3 mm.

15. The battery according to claim 9, characterized in that, The first connecting segment is connected to the tab connector, and along a direction away from the tab connector, the third connecting segment extends toward the side wall of the housing at one end opposite to the first connecting segment and abuts against the side wall of the housing.

16. An electrical appliance, characterized in that, Includes the battery as described in any one of claims 1 to 15.

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