Battery and electric equipment

Abstract

The utility model provides a battery and electric equipment. The battery comprises a shell, connecting pieces and packaging parts, the connecting pieces are used for connecting the shell and the tabs, and the packaging parts are arranged on at least part of the connecting pieces. According to the battery disclosed by the invention, the position, provided with the packaging part, of the connecting piece is not easy to corrode, so that the corrosion speed of the whole connecting piece can be effectively delayed, the structural stability of the connecting piece is improved, and the stability of connection between the shell and the tab is further improved.

Description

[0001] Cross Reference to Related Applications

[0002] The present application claims priority to the Chinese patent application No. 202423033318.8, filed on December 09, 2024, to the Chinese Patent Office, the content of which is incorporated herein by reference in its entirety. TECHNICAL FIELD

[0003] The present application relates to the technical field of batteries, in particular to a battery and an electric device. BACKGROUND

[0004] Batteries are widely used in energy storage systems, vehicles, consumer electronics and other fields. The shell and the tab of the battery need to be connected together through a connecting structure.

[0005] In the related art, the stability of the connection between the shell and the tab of the battery needs to be improved. SUMMARY

[0006] Embodiments of the present application provide a battery and an electric device, which can improve the technical problem of insufficient stability of the connection between the shell and the tab.

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

[0008] a shell;

[0009] a connecting piece and a packaging portion, the connecting piece being configured to connect the shell and a tab;

[0010] wherein the packaging portion is arranged at at least part of the connecting piece.

[0011] In an embodiment, the connecting piece is a bent structure, and the packaging portion is arranged at a bent portion of the connecting piece.

[0012] In an embodiment, the connecting piece comprises an electrode connecting piece connected to the shell and a tab connecting piece connected to the tab, and the tab connecting piece is arranged spaced apart from the shell.

[0013] In an embodiment, a receiving space is formed at the connecting piece or between the connecting piece and the shell, and the receiving space is configured to accommodate the packaging portion.

[0014] In an embodiment, the electrode connecting piece forms the receiving space; and / or,

[0015] the tab connecting piece forms the receiving space; and / or,

[0016] the electrode connecting piece and the tab connecting piece form the receiving space; and / or,

[0017] The accommodation space is formed between the electrode connecting member and the housing; and / or,

[0018] The accommodation space is formed between the tab connecting member and the housing.

[0019] In an embodiment, the electrode connecting member comprises a first connecting segment and a second connecting segment, the second connecting segment connecting the first connecting segment and the housing, the first connecting segment connecting with the tab connecting member, wherein,

[0020] The first connecting segment forms the accommodation space; and / or,

[0021] The second connecting segment forms the accommodation space; and / or,

[0022] The accommodation space is formed between the first connecting segment and the tab connecting member; and / or,

[0023] The accommodation space is formed between the second connecting segment and the tab connecting member; and / or,

[0024] The accommodation space is formed between the first connecting segment and the housing; and / or,

[0025] The accommodation space is formed between the second connecting segment and the housing.

[0026] In an embodiment, the tab connecting member comprises a first tab connecting member and a second tab connecting member connected in sequence, the second tab connecting member being used for connecting the tab, the electrode connecting member being connected to a side of the first tab connecting member away from the second tab connecting member, wherein,

[0027] The first tab connecting member forms the accommodation space; and / or,

[0028] The second tab connecting member forms the accommodation space; and / or,

[0029] The accommodation space is formed between the first tab connecting member and the second tab connecting member; and / or,

[0030] The accommodation space is formed between the first tab connecting member and the electrode connecting member; and / or,

[0031] The accommodation space is formed between the second tab connecting member and the housing.

[0032] In an embodiment, the accommodation space comprises a receiving groove formed in the connecting member.

[0033] In an embodiment, the connecting member comprises at least two connecting sections connected in sequence, and the connecting part of the two adjacent connecting sections is provided with the accommodating groove.

[0034] In an embodiment, the connecting member is provided with a protruding block, and the protruding block is provided with the accommodating groove.

[0035] In an embodiment, the connecting member is provided with a notch at one end connected with the shell, and the wall surface of the notch and the side wall surface of the shell form the accommodating space.

[0036] In an embodiment, the battery further comprises a first surrounding plate, and the first surrounding plate is installed on the connecting member, and the two ends of the first surrounding plate are in abutment with the side wall surface of the shell, so that the first surrounding plate and the side wall surface of the shell form the accommodating space.

[0037] In an embodiment, the connecting member comprises at least two connecting sections connected in sequence, and the battery further comprises a second surrounding plate, and the second surrounding plate is installed on one of the two adjacent connecting sections, and the two ends of the second surrounding plate are in abutment with the other one of the two adjacent connecting sections, so that the second surrounding plate and the other one of the two adjacent connecting sections form the accommodating space.

[0038] In a second aspect, the embodiments of the present application provide a power consumption device comprising the battery described above.

[0039] The embodiments of the present application have the following beneficial effects:

[0040] In the embodiments of the present application, the packaging part is arranged at at least part of the connecting member, and the position of the connecting member provided with the packaging part can avoid contact with other substances (such as electrolyte) under the action of the packaging part, so that the position of the connecting member provided with the packaging part is not easy to corrode, the corrosion speed of the whole connecting member can be effectively delayed, the structural stability of the connecting member is improved, and the stability of the connection between the shell and the tab is improved. BRIEF DESCRIPTION OF DRAWINGS

[0041] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0042] Figure 1 is a structural schematic diagram of a battery provided by the embodiments of the present application;

[0043] Figure 2 is one of the partial structural schematic diagrams of the battery provided by the embodiments of the present application;

[0044] Figure 3 is a second part structure of the battery provided by the embodiment of the present application;

[0045] Figure 4 is a third part structure of the battery provided by the embodiment of the present application;

[0046] Figure 5 is a fourth part structure of the battery provided by the embodiment of the present application. DETAILED DESCRIPTION

[0047] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person skilled in the art without creative work fall within the scope of protection of the present application. In addition, it should be understood that the specific implementation described herein is only used to illustrate and explain the present application, and is not used to limit the present application. In the present application, the orientation words such as "upper" and "lower" generally refer to the upper and lower in the actual use or working state of the device, and specifically refer to the direction of the drawing surface in the drawings; and "inner" and "outer" refer to the outline of the device.

[0048] The battery and the electric equipment according to the present application will be described below. Figures 1 to 5

[0049] According to the embodiment of the first aspect of the present application, referring to Figure 1 , Figure 3 and Figure 4 , the battery comprises a shell 1, a connecting piece 2 and an encapsulation part 3, the connecting piece 2 is used to connect the shell 1 and the tab, and at least part of the connecting piece 2 is provided with the encapsulation part 3.

[0050] According to the battery of the embodiment of the present application, by providing the encapsulation part 3 at least part of the connecting piece 2, under the action of the encapsulation part 3, the position of the connecting piece 2 provided with the encapsulation part 3 can avoid contact with other substances (such as electrolyte), so that the position of the connecting piece 2 provided with the encapsulation part 3 is not easy to be corroded, which can effectively slow down the corrosion speed of the whole connecting piece 2, improve the structural stability of the connecting piece 2, and further improve the stability of the connection between the shell 1 and the tab.

[0051] ​At least part of the connecting piece 2 is provided with the encapsulation part 3. The encapsulation part 3 is arranged at the connecting position of the connecting piece 2 and the shell 1. By arranging the encapsulation part 3 at the connecting position of the connecting piece 2 and the shell 1, the encapsulation part 3 can prevent the connecting position of the connecting piece 2 and the shell 1 from contacting other substances, so that the connecting position of the connecting piece 2 and the shell 1 is not easy to be corroded, the stability of the connection between the connecting piece 2 and the shell 1 is improved, and the stability of the connection between the shell 1 and the tab is improved.

[0052] In some examples, the encapsulation part 3 is arranged at least part of the connecting piece 2, which means that the encapsulation part 3 can be arranged on the whole surface of the connecting piece 2.

[0053] In some examples, referring to Figure 1 and Figure 2 , the shell 1 is formed with a mounting cavity 11, and the shell 1 has a retracted part 12 protruding into the mounting cavity 11. In the embodiment of the present application, the shell 1 refers to the retracted part 12 of the shell 1.

[0054] In some examples, the connecting piece 2 is in a bent structure, and the encapsulation part 3 is arranged at the bent position of the connecting piece 2. The encapsulation part 3 can prevent impurities from entering the bent position of the connecting piece 2, so as to avoid the impurities affecting the strength of the bent position of the connecting piece 2.

[0055] In some examples, referring to Figure 1 , Figure 3 and Figure 4 , the connecting piece 2 includes an electrode connecting piece 22 connected to the shell 1 and a tab connecting piece 23 connected to the tab, and the tab connecting piece 23 is arranged spaced apart from the shell 1.

[0056] It can be understood that the tab connecting piece 23 is arranged spaced apart from the shell 1, so that the tab connecting piece 23 and the shell 1 have a space for accommodating the encapsulation part 3, and the encapsulation part 3 is arranged between the tab connecting piece 23 and the shell 1.

[0057] In some examples, the connecting piece 2 is provided with an accommodation space 24 or the accommodation space 24 is arranged between the connecting piece 2 and the shell 1, and the accommodation space 24 is used for accommodating the encapsulation part 3.

[0058] It is understandable that by providing a receiving space 24 at the connector 2 to accommodate the encapsulation part 3, the encapsulation part 3 can be conveniently placed at the connector 2. This prevents the location of the encapsulation part 3 on the connector 2 from contacting other substances, making the location of the encapsulation part 3 less prone to corrosion. This effectively slows down the corrosion rate of the entire connector 2, improves the structural stability of the connector 2, and thus improves the stability of the connection between the housing 1 and the electrode tab. Furthermore, by providing a receiving space 24 at the connection between the connector 2 and the housing 1 to accommodate the encapsulation part 3, the encapsulation part 3 can be conveniently placed at the connection between the connector 2 and the housing 1. The encapsulation part 3 can prevent the connection between the connector 2 and the housing 1 from contacting other substances, making the connection less prone to corrosion, improving the stability of the connection between the connector 2 and the housing 1, and thus improving the stability of the connection between the housing 1 and the electrode tab.

[0059] It is understandable that by using the receiving space 24 to accommodate the encapsulation part 3, the encapsulation part 3 can be filled into the receiving space 24, thereby facilitating the setting and shaping of the encapsulation part 3. Furthermore, when the encapsulation part 3 is in a fluid state before shaping, the setting of the receiving space 24 can also ensure the amount of encapsulation part 3 installed, avoiding the situation where the amount of encapsulation part 3 is too small and cannot effectively prevent corrosion.

[0060] Specifically, the electrode connector 22 has a receiving space 24.

[0061] It is understandable that by providing a receiving space 24 for accommodating the encapsulation part 3 in the electrode connector 22, it is convenient to place the encapsulation part 3 at the electrode connector 22. This prevents the position of the electrode connector 22 with the encapsulation part 3 from contacting other substances, 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 and improve the structural stability of the electrode connector 22.

[0062] Specifically, the tab connector 23 forms a receiving space 24.

[0063] It is understandable that by providing a receiving space 24 for accommodating the encapsulation part 3 in the tab connector 23, it is convenient to place the encapsulation part 3 at the tab connector 23. This prevents the position of the tab connector 23 with the encapsulation part 3 from contacting other substances, 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 and improve the structural stability of the tab connector 23.

[0064] Specifically, an accommodating space 24 is formed between the electrode connector 22 and the tab connector 23.

[0065] It can be understood that, by providing the accommodating space 24 between the electrode connecting piece 22 and the tab connecting piece 23 for accommodating the packaging part 3, the packaging part 3 is arranged between the electrode connecting piece 22 and the tab connecting piece 23, the connection between the electrode connecting piece 22 and the tab connecting piece 23 is prevented from contacting other substances, the connection between the electrode connecting piece 22 and the tab connecting piece 23 is not prone to corrosion, the corrosion speed of the connection between the electrode connecting piece 22 and the tab connecting piece 23 is effectively slowed down, and the connection stability of the electrode connecting piece 22 and the tab connecting piece 23 is improved.

[0066] Specifically, the accommodating space 24 is formed between the electrode connecting piece 22 and the shell 1.

[0067] It can be understood that, by providing the accommodating space 24 between the electrode connecting piece 22 and the shell 1 for accommodating the packaging part 3, the packaging part 3 is arranged between the electrode connecting piece 22 and the shell 1, the connection between the electrode connecting piece 22 and the shell 1 is prevented from contacting other substances, the connection between the electrode connecting piece 22 and the shell 1 is not prone to corrosion, the corrosion speed of the connection between the electrode connecting piece 22 and the shell 1 is effectively slowed down, and the connection stability of the electrode connecting piece 22 and the shell 1 is improved.

[0068] Specifically, the accommodating space 24 is formed between the tab connecting piece 23 and the shell 1.

[0069] It can be understood that the packaging part 3 can separate the tab connecting piece 23 and the shell 1, prevent the tab connecting piece 23 and the shell 1 from directly contacting each other, and prevent the tab connecting piece 23 and the shell 1 from corroding due to contact.

[0070] In some embodiments, referring to Figure 3 , the electrode connecting piece 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 shell 1, and the first connecting section 223 is connected with the tab connecting piece 23.

[0071] Specifically, the first connecting section 223 forms the accommodating space 24.

[0072] It can be understood that, by providing the accommodating space 24 in the first connecting section 223 for accommodating the packaging part 3, the packaging part 3 is arranged at the first connecting section 223, the position of the first connecting section 223 provided with the packaging part 3 is prevented from contacting other substances, the position of the first connecting section 223 provided with the packaging part 3 is not prone to corrosion, the corrosion speed of the entire first connecting section 223 is effectively slowed down, and the structural stability of the first connecting section 223 is improved.

[0073] Specifically, the second connecting section 224 forms the accommodating space 24.

[0074] It can be understood that, by providing the accommodation space 24 in the second connecting section 224 for accommodating the packaging part 3, the packaging part 3 is facilitated to be arranged at the second connecting section 224, the position of the second connecting section 224 provided with the packaging part 3 can be avoided from contacting other substances, the position of the second connecting section 224 provided with the packaging part 3 is not easy to be corroded, the corrosion speed of the entire second connecting section 224 can be effectively delayed, and the structural stability of the second connecting section 224 is improved.

[0075] Specifically, the accommodation space 24 is formed between the first connecting section 223 and the tab connecting piece 23.

[0076] It can be understood that, by providing the accommodation space 24 between the first connecting section 223 and the tab connecting piece 23 for accommodating the packaging part 3, the packaging part 3 is facilitated to be arranged between the first connecting section 223 and the tab connecting piece 23, the connection between the first connecting section 223 and the tab connecting piece 23 can be avoided from contacting other substances, the connection between the first connecting section 223 and the tab connecting piece 23 is not easy to be corroded, the corrosion speed of the connection between the first connecting section 223 and the tab connecting piece 23 can be effectively delayed, and the connection stability of the first connecting section 223 and the tab connecting piece 23 is improved.

[0077] Specifically, the accommodation space 24 is formed between the second connecting section 224 and the tab connecting piece 23, so as to facilitate the packaging part 3 to be arranged between the second connecting section 224 and the tab connecting piece 23.

[0078] Specifically, the accommodation space 24 is formed between the first connecting section 223 and the shell 1, so as to facilitate the packaging part 3 to be arranged between the first connecting section 223 and the shell 1.

[0079] Specifically, the accommodation space 24 is formed between the second connecting section 224 and the shell 1, so as to facilitate the packaging part 3 to be arranged between the second connecting section 224 and the shell 1.

[0080] In some embodiments, referring to Figure 4 The tab connecting piece 23 comprises a first tab connecting piece 231 and a second tab connecting piece 232 connected in sequence, the second tab connecting piece 232 is used for connecting the tab, and the electrode connecting piece 22 is connected to one side of the first tab connecting piece 231 away from the second tab connecting piece 232.

[0081] Specifically, the accommodation space 24 is formed in the first tab connecting piece 231.

[0082] It can be understood that by providing the accommodation space 24 for accommodating the packaging part 3 at the first tab connecting piece 231, the packaging part 3 is arranged at the first tab connecting piece 231, the position of the first tab connecting piece 231 provided with the packaging part 3 is avoided from contacting other substances, the position of the first tab connecting piece 231 provided with the packaging part 3 is not easy to be corroded, the corrosion speed of the whole first tab connecting piece 231 can be effectively delayed, and the structural stability of the first tab connecting piece 231 is improved.

[0083] Specifically, the second tab connecting piece 232 is formed with the accommodation space 24.

[0084] It can be understood that by providing the accommodation space 24 for accommodating the packaging part 3 at the second tab connecting piece 232, the packaging part 3 is arranged at the second tab connecting piece 232, the position of the second tab connecting piece 232 provided with the packaging part 3 is avoided from contacting other substances, the position of the second tab connecting piece 232 provided with the packaging part 3 is not easy to be corroded, the corrosion speed of the whole second tab connecting piece 232 can be effectively delayed, and the structural stability of the second tab connecting piece 232 is improved.

[0085] Specifically, the accommodation space 24 is formed between the first tab connecting piece 231 and the second tab connecting piece 232.

[0086] It can be understood that by providing the accommodation space 24 for accommodating the packaging part 3 between the first tab connecting piece 231 and the second tab connecting piece 232, the packaging part 3 is arranged between the first tab connecting piece 231 and the second tab connecting piece 232, the connection position of the first tab connecting piece 231 and the second tab connecting piece 232 is avoided from contacting other substances, the connection position of the first tab connecting piece 231 and the second tab connecting piece 232 is not easy to be corroded, the corrosion speed of the connection position of the first tab connecting piece 231 and the second tab connecting piece 232 can be effectively delayed, and the connection stability of the first tab connecting piece 231 and the second tab connecting piece 232 is improved.

[0087] Specifically, the accommodation space 24 is formed between the first tab connecting piece 231 and the electrode connecting piece 22.

[0088] It can be understood that by providing the accommodation space 24 between the first tab connecting piece 231 and the electrode connecting piece 22 for accommodating the packaging part 3, the packaging part 3 is arranged between the first tab connecting piece 231 and the electrode connecting piece 22, the connection between the first tab connecting piece 231 and the electrode connecting piece 22 is avoided from contacting other substances, the connection between the first tab connecting piece 231 and the electrode connecting piece 22 is not easy to corrode, the corrosion speed of the connection between the first tab connecting piece 231 and the electrode connecting piece 22 is effectively slowed down, and the connection stability of the first tab connecting piece 231 and the electrode connecting piece 22 is improved.

[0089] Specifically, the accommodation space 24 is formed between the second tab connecting piece 232 and the shell 1.

[0090] It can be understood that by providing the accommodation space 24 between the second tab connecting piece 232 and the shell 1 for accommodating the packaging part 3, the packaging part 3 is arranged between the second tab connecting piece 232 and the shell 1, the second tab connecting piece 232 and the shell 1 are separated by the packaging part 3, direct contact between the second tab connecting piece 232 and the shell 1 is avoided, the contact points between the connecting piece 2 and the shell 1 are reduced, and corrosion of the contact position between the second tab connecting piece 232 and the shell 1 caused by direct contact between the second tab connecting piece 232 and the shell 1 is avoided.

[0091] In some embodiments, referring to Figure 5 , the accommodation space 24 includes a containing groove 241 formed in the connecting piece 2.

[0092] It can be understood that the connecting piece 2 is formed with the containing groove 241, and the containing groove 241 has the accommodation space 24. That is, the containing groove 241 accommodates the packaging part 3, and the containing groove 241 can limit the packaging part 3, facilitating the arrangement and shaping of the packaging part 3.

[0093] In some embodiments, referring to Figure 5 , the connecting piece 2 includes at least two connecting parts 21 connected in sequence, and the containing groove 241 is arranged at the connection between the two adjacent connecting parts 21.

[0094] It can be understood that by providing the containing groove 241 for accommodating the packaging part 3 at the connection between the two connecting parts 21, the packaging part 3 is arranged at the connection between the two connecting parts 21, the connection between the two adjacent connecting parts 21 is effectively isolated by the packaging part 3, corrosion of the connection between the two adjacent connecting parts 21 is avoided, and the connection stability of the two adjacent connecting parts 21 is improved.

[0095] In some embodiments, the connecting piece 2 is formed with a protruding block, and the protruding block is formed with the containing groove 241.

[0096] It can be understood that the protruding block is arranged at the connecting piece 2 first, and then the accommodating groove 241 for accommodating the packaging part 3 is formed at the protruding block, so that the packaging part 3 is arranged at the connecting piece 2, and meanwhile the influence on the overall thickness of the connecting piece 2 is reduced, and the structural strength of the connecting piece 2 is avoided to be affected due to the reduction of the thickness of the connecting piece 2.

[0097] In some embodiments, the end of the connecting piece 2 connected with the shell 1 is formed with a notch, and the wall surface of the notch and the side wall surface of the shell 1 enclose the accommodating space 24.

[0098] It can be understood that the notch is arranged at the end of the connecting piece 2 connected with the shell 1, and the notch is arranged opposite to the side wall surface of the shell 1, so that the wall surface of the notch and the side wall surface of the shell 1 enclose an accommodating space 24 for accommodating the packaging part 3, and then the packaging part 3 is arranged at the connecting position of the connecting piece 2 and the shell 1.

[0099] In some embodiments, referring to Figure 5 , the battery further comprises a first surrounding plate 110, and the first surrounding plate 110 is arranged at the connecting piece 2, and the two ends of the first surrounding plate 110 are in abutment with the side wall surface of the shell 1, so that the first surrounding plate 110 and the side wall surface of the shell 1 enclose the accommodating space 24.

[0100] It can be understood that the first surrounding plate 110 is arranged at the end of the connecting piece 2 connected with the shell 1, and the two ends of the first surrounding plate 110 are in abutment with the side wall surface of the shell 1 when the connecting piece 2 is connected with the shell 1, so that the first surrounding plate 110 and the side wall surface of the shell 1 enclose an accommodating space 24 for accommodating the packaging part 3, and then the packaging part 3 is arranged at the connecting position of the connecting piece 2 and the shell 1.

[0101] In some embodiments, referring to Figure 5 , the connecting piece 2 comprises at least two connecting parts 21 connected in sequence, and the battery further comprises a second surrounding plate 111, and the second surrounding plate 111 is arranged at one of the two adjacent connecting parts 21, and the two ends of the second surrounding plate 111 are in abutment with the other of the two adjacent connecting parts 21, so that the second surrounding plate 111 and the other of the two adjacent connecting parts 21 enclose the accommodating space 24.

[0102] It can be understood that the second surrounding plate 111 arranged at one of the connecting parts 21 can be in abutment with the other connecting part 21 to enclose an accommodating space 24 for accommodating the packaging part 3, and then the packaging part 3 is arranged at the connecting position of the two adjacent connecting parts 21.

[0103] In some embodiments, the battery comprises a connecting piece 2 and a packaging part 3, and the connecting piece 2 has an electrode connecting piece 22 and a tab connecting piece 23, the electrode connecting piece 22 is used for connecting the electrode of the battery, and the tab connecting piece 23 is used for connecting the tab of the battery.

[0104] At least part of the structure of the encapsulation part 3 is arranged at the connection between the electrode connecting piece 22 and the tab connecting piece 23, and / or at least part of the structure of the encapsulation part 3 is arranged at the connection between the electrode connecting piece 22 and the electrode of the battery.

[0105] According to the battery of the embodiments of the present application, by arranging the encapsulation part 3 at the connection between the electrode connecting piece 22 and the tab connecting piece 23, the encapsulation part 3 can prevent impurities from entering the connection between the electrode connecting piece 22 and the tab connecting piece 23, avoid the impurities affecting the connection strength of the electrode connecting piece 22 and the tab connecting piece 23, improve the connection stability of the electrode connecting piece 22 and the tab connecting piece 23, improve the structural stability of the connecting piece 2, and further improve the connection stability between the tab of the battery and the electrode of the battery. By arranging the encapsulation part 3 at the connection between the electrode connecting piece 22 and the electrode, the encapsulation part 3 can prevent impurities from entering the connection between the electrode connecting piece 22 and the electrode, avoid the impurities affecting the connection strength of the electrode connecting piece 22 and the electrode, improve the connection stability of the electrode connecting piece 22 and the electrode, and further improve the connection stability between the tab of the battery and the electrode of the battery.

[0106] In some embodiments, the electrode of the battery comprises a battery shell or a battery pole.

[0107] It can be understood that when the electrode of the battery is the battery shell, the electrode connecting piece 22 is connected with the battery shell, that is, the connecting piece 2 connects the battery shell and the tab of the battery. When the electrode of the battery is the battery pole, the electrode connecting piece 22 is connected with the battery pole, that is, the connecting piece 2 connects the battery pole and the tab of the battery.

[0108] In some examples, the impurities are, for example, electrolyte.

[0109] In some examples, the encapsulation part 3 is arranged at least partially on the connecting piece 2, which can be arranged at the bending part of the connecting piece 2, or the entire connecting piece 2 can be provided with the encapsulation part 3, or the encapsulation part 3 is arranged at the end of the connecting piece 2 connected with the shell 1.

[0110] In some examples, at least part of the structure of the encapsulation part 3 is arranged at the connection between the connecting piece 2 and the shell 1, which means that part of the encapsulation part 3 is arranged at the connection between the connecting piece 2 and the shell 1, and another part of the encapsulation part 3 is arranged at other positions of the connecting piece 2.

[0111] In some examples, at least part of the structure of the encapsulation part 3 is arranged at the connection between the connecting piece 2 and the shell 1, which means that the encapsulation part 3 is arranged on the circumferential side of the connection between the connecting piece 2 and the shell 1, or the connection between the connecting piece 2 and the shell 1 is covered with the encapsulation part 3.

[0112] In some examples, the encapsulation part 3 is, for example, encapsulation glue, and the material of the encapsulation glue is polyurethane type, epoxy type, anaerobic glue, UV glue, acrylic type, hot melt glue, etc., and the elastic modulus of the encapsulation glue is between 0.1 Gpa and 6 Gpa.

[0113] Specifically, the connection part of the electrode connecting piece 22 and the electrode of the battery is provided with the encapsulation part 3.

[0114] It can be understood that by providing the encapsulation part 3 at the connection part of the electrode connecting piece 22 and the electrode of the battery, the encapsulation part 3 can prevent the connection part of the electrode connecting piece 22 and the electrode of the battery from contacting other substances, avoid the connection strength of the electrode connecting piece 22 and the electrode of the battery being affected by other substances, ensure the connection strength of the electrode connecting piece 22 and the electrode, improve the stability of the connection of the electrode connecting piece 22 and the electrode, and thus the connecting piece 2 can stably connect the electrode and the tab, and the stability of the connection of the electrode and the tab is improved.

[0115] Specifically, the connection part of the electrode connecting piece 22 and the tab connecting piece 23 is provided with the encapsulation part 3.

[0116] It can be understood that by providing the encapsulation part 3 at the connection part of the electrode connecting piece 22 and the tab connecting piece 23, the encapsulation part 3 can prevent the connection part of the electrode connecting piece 22 and the tab connecting piece 23 from contacting other substances, avoid the connection strength of the electrode connecting piece 22 and the tab connecting piece 23 being affected by other substances, ensure the connection strength of the electrode connecting piece 22 and the tab connecting piece 23, improve the structural stability of the connecting piece 2, and thus the connecting piece 2 can stably connect the electrode and the tab of the battery, and the stability of the connection of the electrode and the tab of the battery is improved.

[0117] Specifically, the electrode connecting piece 22 and the tab connecting piece 23 are in contact with the encapsulation part 3 at the same time.

[0118] It can be understood that at the connection part of the electrode connecting piece 22 and the tab connecting piece 23, part of the encapsulation part 3 is in contact with the electrode connecting piece 22, and another part of the encapsulation part 3 is in contact with the tab connecting piece 23, which ensures that the encapsulation part 3 can effectively encapsulate the connection part of the electrode connecting piece 22 and the tab connecting piece 23, effectively prevent impurities from entering the connection part of the electrode connecting piece 22 and the tab connecting piece 23, and improve the connection stability of the electrode connecting piece 22 and the tab connecting piece 23.

[0119] For example, the encapsulation part 3 has at least two connection surfaces, one of the connection surfaces of the encapsulation part 3 is in contact with the electrode connecting piece 22, and the other connection surface of the encapsulation part 3 is in contact with the tab connecting piece 23 at the connection part of the electrode connecting piece 22 and the tab connecting piece 23.

[0120] Specifically, the electrode connecting piece 22 and the electrode of the battery are in contact with the encapsulation part 3 at the same time.

[0121] It can be understood that at the connection between the electrode connecting piece 22 and the electrode of the battery, one part of the packaging portion 3 is in contact with the electrode connecting piece 22, and another part of the packaging portion 3 is in contact with the electrode, so that the packaging portion 3 can effectively package the connection between the electrode connecting piece 22 and the electrode, effectively prevent impurities from entering the connection between the electrode connecting piece 22 and the electrode, and improve the connection stability of the electrode connecting piece 22 and the electrode.

[0122] For example, the packaging portion 3 has at least two connecting surfaces, one of which is in contact with the electrode connecting piece 22 at the connection between the electrode connecting piece 22 and the electrode, and the other is in contact with the electrode.

[0123] In some embodiments, the battery includes a shell 1, and the connection between the electrode connecting piece 22 and the shell 1 is provided with a packaging portion 3.

[0124] It can be understood that the packaging portion 3 can prevent impurities from entering the connection between the electrode connecting piece 22 and the shell 1, and avoid affecting the connection strength of the electrode connecting piece 22 and the shell 1.

[0125] Specifically, the packaging portion extends to the side wall surface of the shell and abuts against the side wall surface of the shell, so that the packaging portion can effectively package the connection between the electrode connecting piece 22 and the shell 1, and prevent impurities from entering the connection between the electrode connecting piece 22 and the shell 1.

[0126] In some embodiments, the tab connecting piece 23 is arranged spaced apart from the shell 1.

[0127] It can be understood that the tab connecting piece 23 is arranged spaced apart from the shell 1, so that the tab connecting piece 23 will not be in direct contact with the shell 1, reducing the connection points of the connecting piece 2 and the shell 1, and avoiding corrosion and other problems caused by the contact between the tab connecting piece 23 and the shell 1.

[0128] In some examples, the electrode connecting piece 22 is connected to the tab connecting piece 23 by surface chemical treatment, such as electroplating, chemical plating, and spraying. It can also be connected to the tab connecting piece 23 by surface physical treatment, such as composite metal stamping.

[0129] In some examples, the tab connecting piece 23 and the electrode connecting piece 22 can be connected together by welding, cold upsetting, thermal compounding, jointing, riveting, heat shrink tube, etc. The electrode connecting piece 22 and the shell 1 can be connected by laser welding, spot welding, resistance welding, etc.

[0130] In some examples, the tab connector 23 comprises a first contact surface in contact with the electrode connector 22, the electrode connector 22 comprises a second contact surface in contact with the tab connector 23, and the first contact surface and / or the second contact surface is provided with a protrusion / groove / rough surface / embossed structure to increase the contact area of the tab connector 23 and the electrode connector 22.

[0131] In some examples, the tab connector 23 is made of copper, and the electrode connector 22 is made of nickel-plated steel strip, nickel strip, or stainless steel.

[0132] In some embodiments, one of the shell 1, the electrode connector 22, and the tab connector 23 is a first metal piece, and the other two are second metal pieces, the first metal piece and the second metal pieces are made of different metal materials, and the connection between the first metal piece and the second metal pieces is provided with the encapsulation part 3. The first metal material and the second metal material are different.

[0133] It can be understood that, by providing the encapsulation part 3 at the connection between the first metal piece and the second metal piece, i.e., at the contact position of the different metal materials, the encapsulation part 3 can prevent the connection between the first metal piece and the second metal piece from contacting other substances (such as electrolyte), so that the connection between the first metal piece and the second metal piece is not prone to corrosion, thereby improving the structural stability of the connector 2 or the connection between the connector 2 and the shell 1, so that the connector 2 can stably connect the shell 1 and the tab.

[0134] It can be understood that, by including two different metal materials in the shell 1, the electrode connector 22, and the tab connector 23, the stability of the connection between the connection part 21 and the shell 1 can be effectively ensured.

[0135] For example, the first metal piece is made of a first metal material, the second metal piece is made of a second metal material, and the first metal material and the second metal material are different.

[0136] It should be noted that the metal material includes a plurality of metal atoms, and the two metal materials respectively include two groups of metal atoms. As long as one metal atom in one group is different from the metal atoms in the other group, the two metal materials can be considered as different metal materials. That is, as long as there is one different metal atom between the first metal material and the second metal material, the first metal material and the second metal material can be considered as different.

[0137] The metal material can be pure metal, alloy, or metal matrix composite material with one or more insoluble solid particles.

[0138] The metal material can be a multi-layer structure, for example, the metal material can include a base material and a metal layer arranged on the base material, and the metal layer can be formed on the base material by electroplating, CVD or the like. The metal layer can be pure metal or alloy, and can also be a metal matrix composite material with one or more insoluble solid particles.

[0139] Specifically, the electrode connecting piece 22 and the tab connecting piece 23 are both second metal pieces, the shell 1 is a first metal piece, and the connection between the electrode connecting piece 22 and the shell 1 is provided with the encapsulation part 3.

[0140] It can be understood that the metal materials of the electrode connecting piece 22 and the shell 1 are different, and by arranging the encapsulation part 3 at the connection between the electrode connecting piece 22 and the shell 1, the encapsulation part 3 can prevent the connection between the electrode connecting piece 22 and the shell 1 from contacting other substances, so that the connection between the electrode connecting piece 22 and the shell 1, i.e., the connection between different metal materials, is not prone to corrosion, improving the connection stability of the electrode connecting piece 22 and the shell 1, so that the connecting piece 2 can stably connect the shell 1 and the tab.

[0141] Specifically, the electrode connecting piece 22 and the shell 1 are both second metal pieces, the tab connecting piece 23 is a first metal piece, and the connection between the electrode connecting piece 22 and the tab connecting piece 23 is provided with the encapsulation part 3.

[0142] It can be understood that the metal materials of the electrode connecting piece 22 and the tab connecting piece 23 are different, and by arranging the encapsulation part 3 at the connection between the electrode connecting piece 22 and the tab connecting piece 23, the encapsulation part 3 can prevent the connection between the electrode connecting piece 22 and the tab connecting piece 23 from contacting other substances, so that the connection between the electrode connecting piece 22 and the tab connecting piece 23, i.e., the connection between different metal materials, is not prone to corrosion, improving the connection stability of the electrode connecting piece 22 and the tab connecting piece 23, improving the structural stability of the connecting piece 2, so that the connecting piece 2 can stably connect the shell 1 and the tab.

[0143] Exemplarily, the electrode assembly at least includes a winding core.

[0144] According to the embodiment of the second aspect of the present application, the electric device includes the above-mentioned battery.

[0145] According to the electric device of the embodiment of the present application, by arranging the encapsulation part 3 at at least part of the connecting piece 2, under the action of the encapsulation part 3, the position of the connecting piece 2 provided with the encapsulation part 3 can avoid contacting other substances (such as electrolyte), so that the position of the connecting piece 2 provided with the encapsulation part 3 is not prone to corrosion, which can effectively slow down the corrosion speed of the entire connecting piece 2, improve the structural stability of the connecting piece 2, and further improve the stability of the connection between the shell 1 and the tab.

[0146] At least part of the connecting piece 2 is provided with an encapsulation part 3, including arranging the encapsulation part 3 at the connecting position of the connecting piece 2 and the shell 1. By arranging the encapsulation part 3 at the connecting position of the connecting piece 2 and the shell 1, the encapsulation part 3 can prevent the connecting position of the connecting piece 2 and the shell 1 from contacting other substances, so that the connecting position of the connecting piece 2 and the shell 1 is not easy to be corroded, the stability of the connection between the connecting piece 2 and the shell 1 is improved, and then the stability of the connection between the shell 1 and the tab is improved.

[0147] It should be noted that the electric device can be a vehicle, an aircraft, or a household appliance. It should be noted that the foregoing is only an example of the electric device, and does not specially limit the electric device.

[0148] The above describes the embodiments of the present application in detail, and the principles and implementation modes of the present application are described by applying specific examples. The above description of the embodiments is only used to help understand the method of the present application and its core idea; meanwhile, for those skilled in the art, according to the idea of the present application, the specific implementation mode and application range will be changed; in summary, the content of the specification should not be understood as a limitation of the present application.

Claims

1. A battery, characterized by, The battery comprises: a shell; a connecting piece and a sealing part, the connecting piece being used to connect the shell and a tab; wherein the sealing part is arranged at least partially on the connecting piece.

2. The battery of claim 1, wherein, The connecting piece is in a bent structure, and the bent part of the connecting piece is provided with the sealing part.

3. The battery of claim 1, wherein, The connecting piece comprises an electrode connecting piece connected with the shell and a tab connecting piece connected with the tab, and the tab connecting piece is arranged apart from the shell.

4. The battery of claim 3, wherein, An accommodating space is formed at the connecting piece or between the connecting piece and the shell, and the accommodating space is used to accommodate the sealing part.

5. The battery according to claim 4, wherein the electrode connecting piece forms the accommodating space; and / or the tab connecting piece forms the accommodating space; and / or the accommodating space is formed between the electrode connecting piece and the tab connecting piece; and / or the accommodating space is formed between the electrode connecting piece and the shell; and / or the accommodating space is formed between the tab connecting piece and the shell.

6. The battery of claim 4, wherein, The electrode connecting piece comprises a first connecting segment and a second connecting segment, the second connecting segment connects the first connecting segment and the shell, and the first connecting segment is connected with the tab connecting piece, wherein the first connecting segment forms the accommodating space; and / or the second connecting segment forms the accommodating space; and / or the accommodating space is formed between the first connecting segment and the tab connecting piece; and / or the accommodating space is formed between the second connecting segment and the tab connecting piece; and / or the accommodating space is formed between the first connecting segment and the shell; and / or the accommodating space is formed between the second connecting segment and the shell.

7. The battery of claim 4, wherein, The tab connecting piece comprises a first tab connecting piece and a second tab connecting piece connected in sequence, the second tab connecting piece is used to connect the tab, and the electrode connecting piece is connected to a side of the first tab connecting piece away from the second tab connecting piece, wherein the first tab connecting piece forms the accommodating space; and / or the second tab connecting piece forms the accommodating space; and / or the accommodating space is formed between the first tab connecting piece and the second tab connecting piece; and / or the accommodating space is formed between the first tab connecting piece and the electrode connecting piece; and / or the accommodating space is formed between the second tab connecting piece and the shell.

8. The battery according to any one of claims 4 to 7, characterized in that, The accommodating space comprises a receiving groove formed on the connecting piece.

9. The battery of claim 8, wherein, The connecting piece comprises at least two connecting parts connected in sequence, and the connecting part of adjacent two connecting parts is provided with the receiving groove.

10. The battery of claim 8, wherein, The connecting piece is provided with a protruding block, and the protruding block is provided with the receiving groove.

11. The battery of any one of claims 4 to 7, wherein, The end of the connecting piece connected with the shell is provided with a notch, and the wall surface of the notch and the side wall surface of the shell enclose the accommodating space.

12. The battery of any one of claims 4 to 7, wherein, The battery further comprises a first enclosing plate, the first enclosing plate is mounted on the connecting piece, and both ends of the first enclosing plate abut against the side wall surface of the shell, so that the first enclosing plate and the side wall surface of the shell enclose the accommodating space.

13. The battery of any one of claims 4 to 7, wherein the battery is a lithium ion battery. The connecting piece comprises at least two connecting sections connected in sequence, and the battery further comprises a second enclosing plate, which is mounted on one of the two adjacent connecting sections and abuts against the other of the two adjacent connecting sections at both ends, so that the second enclosing plate and the other of the two adjacent connecting sections enclose the accommodating space.

14. An electrical device, characterized by A battery comprising a battery as claimed in any of claims 1 to 13.

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