Battery and electric equipment

Abstract

The utility model provides a battery and electric equipment. The battery comprises a shell, an electrode connecting piece, a tab connecting piece and a packaging part, the electrode connecting piece is connected with the shell, the tab connecting piece is connected with the electrode connecting piece and a tab of the battery, and the packaging part is arranged at the joint of the electrode connecting piece and the tab connecting piece; or at least one of the electrode connecting piece and the tab connecting piece is provided with a packaging part. According to the battery provided by the invention, the electrode connecting piece and the tab connecting piece can be stably connected with the shell and the tab, so that the connection stability of the shell and the tab is improved.

Description

[0001] Cross-reference to related applications

[0002] This application claims priority to Chinese Patent Application No. 202423033318.8, filed with the Chinese Patent Office on December 9, 2024, the entire contents of which are incorporated herein by reference. Technical Field

[0003] This application relates to the field of battery technology, specifically to batteries and electrical equipment. Background Technology

[0004] 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.

[0005] In related technologies, the stability of the connection between the battery tabs and the battery casing still needs to be improved. Utility Model Content

[0006] The embodiments of this application provide a battery and an electrical device that can improve the technical problem of insufficient stability in the connection between the battery tabs and the battery casing.

[0007] In a first aspect, embodiments of this application provide a battery, comprising:

[0008] case;

[0009] The electrode connector is connected to the housing;

[0010] A tab connector, which connects the electrode connector and the tab of the battery;

[0011] Packaging department;

[0012] The encapsulation portion is provided at the connection between the electrode connector and the tab connector; or, the encapsulation portion is provided at at least one of the electrode connector and the tab connector.

[0013] In one embodiment, the encapsulation portion is provided at the fixed connection point between the electrode connector and the tab connector.

[0014] In one embodiment, at least a portion of the encapsulation portion is disposed around the fixed connection portion between the electrode connector and the tab connector.

[0015] In one embodiment, the encapsulation portion is provided at the fixed connection point between the electrode connector and the housing.

[0016] In one embodiment, at least a portion of the encapsulation portion is disposed around the fixed connection portion between the electrode connector and the housing.

[0017] In one embodiment, the electrode connector has a bent structure, and the encapsulation portion is provided at the bend of the electrode connector.

[0018] In one embodiment, the electrode connector includes a first connecting segment and a second connecting segment, the second connecting segment connecting the first connecting segment and the housing, and the first connecting segment connecting to the tab connector, wherein...

[0019] At least a portion of the encapsulation portion covers the connection between the first connecting segment and the tab connector; and / or,

[0020] At least a portion of the encapsulation portion covers the connection between the first connecting segment and the second connecting segment; and / or,

[0021] At least a portion of the encapsulation portion covers the connection between the second connecting segment and the housing.

[0022] In one embodiment, the electrode connector further includes a third connecting segment, the third connecting segment connecting the first connecting segment and the second connecting segment, wherein,

[0023] At least a portion of the encapsulation portion covers the connection between the third connecting segment and the first connecting segment; and / or,

[0024] At least a portion of the encapsulation portion covers the connection between the third connecting segment and the second connecting segment; and / or,

[0025] The third connecting segment has a bent structure, and at least part of the encapsulation part is located at the bend of the third connecting segment.

[0026] In one embodiment, the tab connector has a bent structure, and the encapsulation part is provided at the bent part of the tab connector.

[0027] In one embodiment, the electrode connector includes a first electrode connector and a second electrode connector. The first electrode connector connects the second electrode connector and the electrode connector. The second electrode connector is used to connect the electrode tab.

[0028] At least a portion of the encapsulation portion covers the connection between the first electrode connector and the second electrode connector;

[0029] At least a portion of the encapsulation portion covers the connection between the first tab connector and the electrode connector;

[0030] At least a portion of the encapsulation portion covers the connection between the second tab connector and the tab.

[0031] In one embodiment, the electrode connector, the tab connector, and the sidewall of the housing form a receiving space for accommodating the encapsulation portion.

[0032] In one embodiment, the extended surface of the tab connector that faces away from the electrode connector is spaced apart from the encapsulation portion.

[0033] In one embodiment, the distance between the encapsulation portion and the side of the tab connector opposite to the electrode connector is A3, where A3 ≥ 0.3 mm.

[0034] In one embodiment, the side of the encapsulation portion opposite to the electrode connector is flush with the side of the tab connector opposite to the electrode connector.

[0035] In one embodiment, the encapsulation portion is provided at the connection between the tab connector and the electrode connector, with a first end of the encapsulation portion extending along the wall of the electrode connector and a second end of the encapsulation portion extending along the wall of the tab connector.

[0036] In one embodiment, the encapsulation portion is provided at the connection between the electrode connector and the housing, with a first end of the encapsulation portion extending along the wall of the electrode connector and a second end of the encapsulation portion extending along the side wall of the housing.

[0037] In one embodiment, the battery includes a housing with a recessed portion that protrudes into the interior space of the housing, an electrode connector is connected to the recessed portion, and an encapsulation portion is provided between the electrode connector and the recessed portion.

[0038] Secondly, embodiments of this application provide an electrical device including the battery described above.

[0039] The beneficial effects of the embodiments of this application are as follows:

[0040] In the embodiments of this application, by providing an encapsulation part at the connection between the electrode connector and the tab connector, the encapsulation part can prevent impurities (such as electrolyte) from entering the connection between the electrode connector and the tab connector, prevent impurities from affecting the connection strength of the electrode connector and the tab connector, ensure the connection stability of the electrode connector and the tab connector, and enable the electrode connector and the tab connector to stably connect the housing and the tab, thereby improving the connection stability of the housing and the tab.

[0041] By providing an encapsulation part at the tab connector, the encapsulation part can prevent contact with other substances (such as electrolyte) at the location of the tab connector, making the location of the encapsulation part less prone to corrosion. This effectively slows down the corrosion rate of the entire tab connector, improves the structural stability of the tab connector, and allows the electrode connector and tab connector to stably connect the housing and the tab, thereby improving the connection stability between the housing and the tab.

[0042] By providing an encapsulation portion at the electrode connector, the encapsulation portion prevents contact with other substances (such as electrolyte), making the encapsulated portion less prone to corrosion. This effectively slows down the corrosion rate of the entire electrode connector, improves its structural stability, and allows the electrode connector and tab connector to stably connect the housing and tab, thereby enhancing the connection stability between the housing and tab. Attached Figure Description

[0043] 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.

[0044] Figure 1 This is a schematic diagram of the battery structure provided in an embodiment of this application;

[0045] Figure 2 This is one of the partial structural schematic diagrams of a battery provided in an embodiment of this application;

[0046] 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;

[0047] Figure 4 This is a partial structural schematic diagram provided by an embodiment of this application, wherein the third connecting segment is a straight line segment;

[0048] Figure 5 This is a second schematic diagram of a partial structure of a battery provided in an embodiment of this application;

[0049] Figure 6 This is the third schematic diagram of a partial structure of a battery provided in an embodiment of this application. Detailed Implementation

[0050] 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.

[0051] The following is combined with Figures 1 to 6 This application describes the battery and electrical device.

[0052] According to the embodiments of the first aspect of this application, see [link / reference]. Figure 1 and Figure 2 The battery includes a casing 1, an electrode connector 22, a tab connector 23, and a package 3. The electrode connector 22 is connected to the casing 1, and the tab connector 23 connects the electrode connector 22 and the tab of the battery.

[0053] The electrode connector 22 and the tab connector 23 are provided with a sealing part 3 at the connection point; or, at least one of the electrode connector 22 and the tab connector 23 is provided with a sealing part 3.

[0054] According to the battery of the present application embodiment, 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 impurities (such as electrolyte) from entering the connection between the electrode connector 22 and the tab connector 23, prevent impurities from affecting the connection strength between the electrode connector 22 and the tab connector 23, ensure the connection stability between the electrode connector 22 and the tab connector 23, and enable the electrode connector 22 and the tab connector 23 to stably connect the housing 1 and the tab, thereby improving the connection stability between the housing 1 and the tab.

[0055] By providing an encapsulation part 3 at the tab connector 23, the position of the tab connector 23 with the encapsulation part 3 can avoid contact with other substances (such as electrolyte), making the position of the tab connector 23 with the encapsulation part 3 less prone to corrosion. This can effectively slow down the corrosion rate of the entire tab connector 23, improve the structural stability of the tab connector 23, and enable the electrode connector 22 and the tab connector 23 to stably connect the housing 1 and the tab, thereby improving the connection stability between the housing 1 and the tab.

[0056] By providing an encapsulation part 3 at the electrode connector 22, the position of the electrode connector 22 with the encapsulation part 3 can avoid contact with other substances (such as electrolyte), making the position of the electrode connector 22 with the encapsulation part 3 less prone to corrosion. This can effectively slow down the corrosion rate of the entire electrode connector 22, improve the structural stability of the electrode connector 22, and enable the electrode connector 22 and the tab connector 23 to stably connect the housing 1 and the tab, thereby improving the connection stability between the housing 1 and the tab.

[0057] It is understood that the encapsulation part 3 provided at the electrode connector 22 can refer to the encapsulation part 3 being provided at the connection between the electrode connector 22 and the housing 1. The encapsulation part 3 can prevent impurities from entering the connection between the electrode connector 22 and the housing 1, thus avoiding impurities affecting the connection strength between the electrode connector 22 and the housing 1.

[0058] In some embodiments, an encapsulation portion 3 is provided at the fixed connection portion between the electrode connector 22 and the tab connector 23.

[0059] It is understandable that by providing an encapsulation part 3 at the fixed connection point between the electrode connector 22 and the tab connector 23, the encapsulation part 3 can prevent impurities from contacting the fixed connection point between the electrode connector 22 and the tab connector 23, avoid corrosion of the fixed connection point between the electrode connector 22 and the tab connector 23 due to impurities, and improve the connection stability between the electrode connector 22 and the tab connector 23.

[0060] Specifically, at least a portion of the encapsulation part 3 is provided around the fixed connection portion between the electrode connector 22 and the tab connector 23, so that the encapsulation part 3 can provide comprehensive encapsulation protection for the fixed connection portion between the electrode connector 22 and the tab connector 23.

[0061] In some embodiments, an encapsulation portion 3 is provided at the fixed connection point between the electrode connector 22 and the housing 1.

[0062] It is understandable that by providing an encapsulation part 3 at the fixed connection point between the electrode connector 22 and the housing 1, the encapsulation part 3 can prevent impurities from contacting the fixed connection point between the electrode connector 22 and the housing 1, avoid corrosion of the fixed connection point between the electrode connector 22 and the housing 1 due to impurities, and improve the connection stability between the electrode connector 22 and the housing 1.

[0063] Specifically, at least a portion of the encapsulation part 3 is provided around the fixed connection portion between the electrode connector 22 and the housing 1, so that the encapsulation part 3 can provide comprehensive encapsulation protection for the fixed connection portion between the electrode connector 22 and the housing 1.

[0064] In some embodiments, the electrode connector 22 has a bent structure, and the bent portion of the electrode connector 22 is provided with an encapsulation portion 3.

[0065] It is understandable that by providing the encapsulation part 3 at the bend of the electrode connector 22, the encapsulation part 3 can prevent impurities (such as electrolyte) from entering the bend of the electrode connector 22, prevent impurities from affecting the strength of the bend of the electrode connector 22, ensure the structural stability of the electrode connector 22, and thus improve the connection stability between the housing 1 and the electrode tab.

[0066] In some embodiments, see Figure 2 The electrode connector 22 includes a first connecting section 223 and a second connecting section 224. The second connecting section 224 connects the first connecting section 223 and the housing 1. The first connecting section 223 is connected to the tab connector 23.

[0067] Specifically, at least part of the encapsulation portion 3 covers the connection between the first connecting segment 223 and the tab connector 23. The encapsulation portion 3 can prevent impurities (such as electrolyte) from entering the connection between the first connecting segment 223 and the tab connector 23, and prevent impurities from affecting the strength of the connection between the first connecting segment 223 and the tab connector 23. This ensures the connection stability between the first connecting segment 223 and the tab connector 23, so that the electrode connector 22 and the tab connector 23 can stably connect the housing 1 and the tab, thereby improving the connection stability between the housing 1 and the tab.

[0068] Specifically, at least part of the encapsulation portion 3 covers the connection between the first connecting segment 223 and the second connecting segment 224. The encapsulation portion 3 can prevent impurities (such as electrolyte) from entering the connection between the first connecting segment 223 and the second connecting segment 224, and prevent impurities from affecting the strength of the connection between the first connecting segment 223 and the second connecting segment 224. This ensures the connection stability of the first connecting segment 223 and the second connecting segment 224, so that the electrode connector 22 and the tab connector 23 can stably connect the housing 1 and the tab, thereby improving the connection stability between the housing 1 and the tab.

[0069] Specifically, at least part of the encapsulation portion 3 covers the connection between the second connecting segment 224 and the housing 1. The encapsulation portion 3 can prevent impurities (such as electrolyte) from entering the connection between the second connecting segment 224 and the housing 1, and prevent impurities from affecting the strength of the connection between the second connecting segment 224 and the housing 1. This ensures the connection stability between the second connecting segment 224 and the housing 1, so that the electrode connector 22 and the tab connector 23 can stably connect the housing 1 and the tab, thereby improving the connection stability between the housing 1 and the tab.

[0070] In some embodiments, see Figure 3 and Figure 4The electrode connector 22 also includes a third connecting segment 225, which connects the first connecting segment 223 and the second connecting segment 224.

[0071] Specifically, at least part of the encapsulation portion 3 covers the connection between the third connecting segment 225 and the first connecting segment 223. The encapsulation portion 3 can prevent impurities (such as electrolyte) from entering the connection between the third connecting segment 225 and the first connecting segment 223, and prevent impurities from affecting the strength of the connection between the third connecting segment 225 and the first connecting segment 223. This ensures the connection stability between the third connecting segment 225 and the first connecting segment 223, so that the electrode connector 22 and the tab connector 23 can stably connect the housing 1 and the tab, thereby improving the connection stability between the housing 1 and the tab.

[0072] Specifically, at least part of the encapsulation portion 3 covers the connection between the third connecting segment 225 and the second connecting segment 224. The encapsulation portion 3 can prevent impurities (such as electrolyte) from entering the connection between the third connecting segment 225 and the second connecting segment 224, and prevent impurities from affecting the strength of the connection between the third connecting segment 225 and the second connecting segment 224. This ensures the connection stability between the third connecting segment 225 and the second connecting segment 224, so that the electrode connector 22 and the tab connector 23 can stably connect the housing 1 and the tab, thereby improving the connection stability between the housing 1 and the tab.

[0073] Specifically, the third connecting segment 225 has a bent structure, and at least part of the encapsulation part 3 is provided at the bend of the third connecting segment 225. The encapsulation part 3 can prevent impurities (such as electrolyte) from entering the bend of the third connecting segment 225, and prevent impurities from affecting the strength of the bend of the third connecting segment 225. This allows the electrode connector 22 and the tab connector 23 to stably connect the housing 1 and the tab, thereby improving the connection stability of the housing 1 and the tab.

[0074] In some embodiments, the tab connector 23 has a bent structure, and an encapsulation portion 3 is provided at the bend of the tab connector 23. By providing the encapsulation portion 3 at the bend of the tab connector 23, the encapsulation portion 3 can prevent impurities (such as electrolyte) from entering the bend of the tab connector 23, prevent impurities from affecting the strength of the bend of the tab connector 23, ensure the structural stability of the tab connector 23, and thus improve the connection stability between the housing 1 and the tab.

[0075] In some embodiments, see Figure 5 The electrode connector 23 includes a first electrode connector 231 and a second electrode connector 232. The first electrode connector 231 connects the second electrode connector 232 and the electrode connector 22. The second electrode connector 232 is used to connect the electrode.

[0076] Specifically, at least part of the encapsulation portion 3 covers the connection between the first tab connector 231 and the second tab connector 232. The encapsulation portion 3 can prevent impurities (such as electrolyte) from entering the connection between the first tab connector 231 and the second tab connector 232, and prevent impurities from affecting the strength of the connection between the first tab connector 231 and the second tab connector 232. This ensures the connection stability between the first tab connector 231 and the second tab connector 232, so that the electrode connector 22 and the tab connector 23 can stably connect the housing 1 and the tab, thereby improving the connection stability between the housing 1 and the tab.

[0077] Specifically, at least part of the encapsulation portion 3 covers the connection between the first tab connector 231 and the electrode connector 22. The encapsulation portion 3 can prevent impurities (such as electrolyte) from entering the connection between the first tab connector 231 and the electrode connector 22, and prevent impurities from affecting the strength of the connection between the first tab connector 231 and the electrode connector 22. This ensures the connection stability between the first tab connector 231 and the electrode connector 22, so that the electrode connector 22 and the tab connector 23 can stably connect the housing 1 and the tab, thereby improving the connection stability between the housing 1 and the tab.

[0078] Specifically, at least part of the encapsulation portion 3 covers the connection between the second electrode connector 232 and the electrode tab. The encapsulation portion 3 can prevent impurities (such as electrolyte) from entering the connection between the second electrode connector 232 and the electrode tab, and prevent impurities from affecting the strength of the connection between the second electrode connector 232 and the electrode tab. This ensures the connection stability between the second electrode connector 232 and the electrode tab, so that the electrode connector 22 and the electrode tab connector 23 can stably connect the housing 1 and the electrode tab, thereby improving the connection stability between the housing 1 and the electrode tab.

[0079] In some embodiments, see Figure 2 and Figure 5 The electrode connector 22, the tab connector 23 and the side wall of the housing 1 form a receiving space 24, which is used to receive the encapsulation part 3.

[0080] It is understandable that the encapsulation space 24 is used to accommodate the encapsulation part 3, which facilitates the installation of the encapsulation part 3.

[0081] In some examples, the encapsulation part 3 is disposed on the side wall of the electrode connector 22, the tab connector 23 and the housing 1 to form a receiving space 24. The wall of the receiving space 24 can limit the encapsulation part 3, thereby facilitating the cooling and forming of the encapsulation part 3.

[0082] Specifically, the extended surface of the tab connector 23 that is away from the surface of the electrode connector 22 is spaced apart from the encapsulation portion 3.

[0083] It is understood that some structures of the battery (such as electrode components) are located on the side of the tab connector 23 away from the electrode components. The extended surface of the tab connector 23 away from the electrode connector 22 is spaced apart from the encapsulation portion 3, that is, the encapsulation portion 3 does not protrude from the surface of the tab connector 23 away from the electrode connector 22, thereby ensuring that the encapsulation portion 3 does not interfere with some structures of the battery (such as electrode components).

[0084] For example, the distance between the encapsulation part 3 and the side of the tab connector 23 away from the electrode connector 22 is A3, where A3 ≥ 0.3 mm, thereby ensuring that the encapsulation part 3 does not protrude from the side of the tab connector 23 away from the electrode assembly.

[0085] Specifically, the side of the encapsulation portion 3 facing away from the electrode connector 22 is flush with the side of the tab connector 23 facing away from the electrode connector 22, thereby preventing interference between the encapsulation portion 3 and a portion of the battery structure (e.g., the electrode assembly) located on the side of the tab connector 23 facing away from the electrode assembly.

[0086] In some embodiments, an encapsulation portion 3 is provided at the connection between the tab connector 23 and the electrode connector 22. A first end of the encapsulation portion 3 extends along the wall surface of the electrode connector 22, and a second end extends along the wall surface of the tab connector 23. This allows both the electrode connector 22 and the tab connector 23 to simultaneously contact the encapsulation portion 3, enabling the encapsulation portion 3 to effectively encapsulate and protect the connection between them. The encapsulation portion 3 prevents impurities from entering the connection between the electrode connector 22 and the tab connector 23, thus avoiding any impact on the connection strength between them.

[0087] In some embodiments, an encapsulation portion 3 is provided at the connection between the electrode connector 22 and the housing 1. A first end of the encapsulation portion 3 extends along the wall surface of the electrode connector 22, and a second end extends along the side wall surface of the housing 1. This allows both the electrode connector 22 and the housing 1 to simultaneously contact the encapsulation portion 3, enabling the encapsulation portion 3 to effectively encapsulate and protect the connection between the electrode connector 22 and the housing 1. The encapsulation portion 3 prevents impurities from entering the connection between the electrode connector 22 and the housing 1, thus avoiding any impact on the connection strength between the electrode connector 22 and the housing 1.

[0088] In some embodiments, see Figure 1 and Figure 6The battery includes a casing 1, which has a recessed portion 12 that protrudes into the interior space of the casing 1. An electrode connector 22 is connected to the recessed portion 12, and an encapsulation portion 3 is provided between a tab connector 23 and the recessed portion 12. The encapsulation portion 3 separates the tab connector 23 from the recessed portion 12, preventing direct contact between them and avoiding corrosion at the contact points.

[0089] 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.

[0090] 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.

[0091] 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.

[0092] In some embodiments, the electrodes of the battery include the battery casing or battery terminals.

[0093] 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.

[0094] In some examples, the impurity is, for example, the electrolyte.

[0095] 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.

[0096] 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.

[0097] 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.

[0098] 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.

[0099] Specifically, an encapsulation part 3 is provided at the connection between the electrode connector 22 and the battery electrode.

[0100] 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.

[0101] Specifically, an encapsulation part 3 is provided at the connection between the electrode connector 22 and the tab connector 23.

[0102] 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.

[0103] Specifically, the electrode connector 22 and the tab connector 23 simultaneously contact the encapsulation part 3.

[0104] 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.

[0105] 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.

[0106] Specifically, the electrode connector 22 and the battery electrode are in contact with the encapsulation part 3 at the same time.

[0107] 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.

[0108] 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.

[0109] 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.

[0110] 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.

[0111] 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.

[0112] In some embodiments, the tab connector 23 is spaced apart from the housing 1.

[0113] 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.

[0114] 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.

[0115] 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.

[0116] 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.

[0117] 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.

[0118] 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.

[0119] 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.

[0120] 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.

[0121] 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.

[0122] 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.

[0123] The metal material can be pure metal, alloy, or metal-based composite material with one or more insoluble solid particles added.

[0124] 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.

[0125] Specifically, both electrode connector 22 and electrode tab connector 23 are second metal parts, and housing 1 is a first metal part. An encapsulation part 3 is provided at the connection between electrode connector 22 and housing 1.

[0126] 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 electrode tab.

[0127] 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.

[0128] 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.

[0129] For example, the electrode assembly includes at least a core.

[0130] According to an embodiment of the second aspect of this application, the electrical device includes the battery described above.

[0131] According to the embodiments of this application, the electrical device has an encapsulation part 3 provided at the connection between the electrode connector 22 and the tab connector 23. The encapsulation part 3 can prevent impurities (such as electrolyte) from entering the connection between the electrode connector 22 and the tab connector 23, and prevent impurities from affecting the connection strength between the electrode connector 22 and the tab connector 23. This ensures the connection stability between the electrode connector 22 and the tab connector 23, so that the electrode connector 22 and the tab connector 23 can stably connect the housing 1 and the tab, thereby improving the connection stability between the housing 1 and the tab.

[0132] By providing an encapsulation part 3 at the tab connector 23, the position of the tab connector 23 with the encapsulation part 3 can avoid contact with other substances (such as electrolyte), making the position of the tab connector 23 with the encapsulation part 3 less prone to corrosion. This can effectively slow down the corrosion rate of the entire tab connector 23, improve the structural stability of the tab connector 23, and enable the electrode connector 22 and the tab connector 23 to stably connect the housing 1 and the tab, thereby improving the connection stability between the housing 1 and the tab.

[0133] By providing an encapsulation part 3 at the electrode connector 22, the position of the electrode connector 22 with the encapsulation part 3 can avoid contact with other substances (such as electrolyte), making the position of the electrode connector 22 with the encapsulation part 3 less prone to corrosion. This can effectively slow down the corrosion rate of the entire electrode connector 22, improve the structural stability of the electrode connector 22, and enable the electrode connector 22 and the tab connector 23 to stably connect the housing 1 and the tab, thereby improving the connection stability between the housing 1 and the tab.

[0134] 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.

[0135] 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; A tab connector, which connects the electrode connector and the tab of the battery; Packaging department; The encapsulation portion is provided at the connection between the electrode connector and the tab connector; or, at least one of the electrode connector and the tab connector is provided with the encapsulation portion.

2. The battery according to claim 1, characterized in that, The encapsulation part is provided at the fixed connection part between the electrode connector and the tab connector.

3. The battery according to claim 2, characterized in that, At least a portion of the encapsulation portion is disposed around the fixed connection portion between the electrode connector and the tab connector.

4. The battery according to claim 1, characterized in that, The encapsulation part is provided at the fixed connection point between the electrode connector and the housing.

5. The battery according to claim 4, characterized in that, At least a portion of the encapsulation portion is disposed around the fixed connection portion between the electrode connector and the housing.

6. The battery according to any one of claims 1 to 5, characterized in that, The electrode connector has a bent structure, and the encapsulation part is provided at the bend of the electrode connector.

7. The battery according to claim 6, characterized in that, The electrode connector includes a first connecting segment and a second connecting segment, the second connecting segment connecting the first connecting segment and the housing, and the first connecting segment connecting to the tab connector. At least a portion of the encapsulation portion covers the connection between the first connecting segment and the tab connector; and / or, At least a portion of the encapsulation portion covers the connection between the first connecting segment and the second connecting segment; and / or, At least a portion of the encapsulation portion covers the connection between the second connecting segment and the housing.

8. The battery according to claim 7, characterized in that, The electrode connector further includes a third connecting segment, which connects the first connecting segment and the second connecting segment, wherein... At least a portion of the encapsulation portion covers the connection between the third connecting segment and the first connecting segment; and / or, At least a portion of the encapsulation portion covers the connection between the third connecting segment and the second connecting segment; and / or, The third connecting segment has a bent structure, and at least part of the encapsulation part is located at the bend of the third connecting segment.

9. The battery according to any one of claims 1 to 5, characterized in that, The electrode connector has a bent structure, and the encapsulation part is provided at the bend of the electrode connector.

10. The battery according to claim 9, characterized in that, The electrode connector includes a first electrode connector and a second electrode connector. The first electrode connector connects the second electrode connector and the electrode connector. The second electrode connector is used to connect the electrode tabs. At least a portion of the encapsulation portion covers the connection between the first electrode connector and the second electrode connector; At least a portion of the encapsulation portion covers the connection between the first tab connector and the electrode connector; At least a portion of the encapsulation portion covers the connection between the second tab connector and the tab.

11. The battery according to any one of claims 1 to 5, characterized in that, The electrode connector, the tab connector, and the side wall of the housing form a receiving space, which is used to accommodate the encapsulation part.

12. The battery according to claim 11, characterized in that, The extended surface of the tab connector that faces away from the electrode connector is spaced apart from the encapsulation portion.

13. The battery according to claim 12, characterized in that, The distance between the encapsulation part and the side of the tab connector opposite to the electrode connector is A3, where A3 ≥ 0.3 mm.

14. The battery according to claim 11, characterized in that, The side of the encapsulation portion facing away from the electrode connector is flush with the side of the tab connector facing away from the electrode connector.

15. The battery according to any one of claims 1 to 5, characterized in that, The encapsulation portion is provided at the connection between the tab connector and the electrode connector. The first end of the encapsulation portion extends along the wall of the electrode connector, and the second end of the encapsulation portion extends along the wall of the tab connector.

16. The battery according to any one of claims 1 to 5, characterized in that, The encapsulation portion is provided at the connection between the electrode connector and the housing. The first end of the encapsulation portion extends along the wall of the electrode connector, and the second end of the encapsulation portion extends along the side wall of the housing.

17. The battery according to any one of claims 1 to 5, characterized in that, The battery includes a housing with a recessed portion that protrudes into the interior space of the housing. An electrode connector is connected to the recessed portion, and an encapsulation portion is provided between the electrode connector and the recessed portion.

18. An electrical appliance, characterized in that, Includes the battery as described in any one of claims 1 to 17.

Images