Secondary battery and electric device

Abstract

The utility model discloses a secondary battery and electric equipment, and belongs to the technical field of batteries, the secondary battery comprises a shell, an electrode assembly and a connector, the secondary battery comprises a main body part and a first limiting part which are connected with each other, and the main body part is provided with an accommodating cavity and a connecting port communicated with the accommodating cavity; the shell is arranged in the accommodating cavity; the connector is arranged in the containing cavity and electrically connected with the electrode assembly, the connector comprises a body and an inserting part, the inserting part is connected to the side, facing the connecting port, of the body, the connecting port is used for enabling at least part of the inserting part to be exposed out of the body part, and the first limiting part is arranged on the side, away from the inserting part, of the body so as to limit the connector. According to the application, the first limiting part is arranged to limit the connector of the secondary battery, so that relative displacement between the connector of the secondary battery and the shell can be avoided when the secondary battery is placed into the electric equipment, and poor contact between the secondary battery and the electric equipment is avoided.

Description

Technical Field

[0001] The present application belongs to the field of battery technology, and specifically relates to secondary batteries and electrical equipment. Background Art

[0002] The connector of the secondary battery is limited by the cover plate and the shell. When the secondary battery is installed, the connector of the secondary battery and the connector of the electrical equipment are released and begin to be subjected to force. Under the action of the cover plate, the connector of the secondary battery and the shell remain relatively still, thereby completing the connection between the secondary battery and the electrical equipment.

[0003] However, in the current technology, there is a gap in the connection between the cover and the shell. During the installation process, when the cover cannot limit the connector of the secondary battery in the first time, the connector of the secondary battery will move relative to the shell, resulting in the connector of the secondary battery and the connector of the electrical equipment unable to be connected in place, thereby causing poor contact problems. Utility Model Content

[0004] Purpose of the utility model: The present application provides a secondary battery for solving the technical problem of poor contact during installation of the secondary battery into an electrical device; another purpose of the present application is to provide an electrical device.

[0005] Technical solution: This application provides a secondary battery, including:

[0006] The housing comprises a main body and a first limiting part connected to each other, wherein the main body is provided with a receiving cavity and a connecting port communicating with the receiving cavity;

[0007] An electrode assembly is disposed in the accommodating cavity;

[0008] A connector is arranged in the accommodating cavity and is electrically connected to the electrode assembly. The connector includes a main body and a plug-in portion. The plug-in portion is connected to a side of the main body facing the connecting port. The connecting port is used to expose at least a portion of the plug-in portion from the main body. The first limiting portion is arranged on a side of the main body away from the plug-in portion to limit the connector.

[0009] In some embodiments, the secondary battery further includes a cover plate, the cover plate is connected to the shell, and the cover plate is disposed on a side of the body away from the plug-in portion.

[0010] In some embodiments, the cover plate is located on a side of the limiting portion close to the electrode assembly.

[0011] In some embodiments, the shell includes a connecting portion, the connecting portion is connected to the main body, and the connecting portion is connected to one end of the first limiting portion along an extension direction of the first limiting portion, and the connecting portion is used to connect an electrical device.

[0012] In some embodiments, the shell includes at least two connecting portions, and at least two connecting portions are arranged at two ends of the first limiting portion along an extension direction of the first limiting portion.

[0013] In some embodiments, the connector further includes a third limiting portion, the third limiting portion is connected to one side of the body along the extension direction of the first limiting portion, or the third limiting portion is connected to one side of the plug-in portion along the extension direction of the first limiting portion;

[0014] The housing further includes a second limiting portion, the second limiting portion is connected to the main body, and the second limiting portion is connected to a side of the third limiting portion away from the cover plate to limit the connector.

[0015] In some embodiments, the connector includes at least two third limiting portions, and at least two third limiting portions are respectively connected to both sides of the body along the extension direction of the first limiting portion, or the third limiting portions are respectively connected to both sides of the plug-in portion along the extension direction of the first limiting portion.

[0016] In some embodiments, the connector further includes a fourth limiting portion, wherein the fourth limiting portion is connected to a side of the third limiting portion away from the second limiting portion;

[0017] The electrode assembly has a limiting hole, and the fourth limiting portion is arranged in the limiting hole along a direction perpendicular to the extending direction of the first limiting portion to limit the connector.

[0018] In some embodiments, the connector includes at least two fourth limiting portions; and the electrode assembly has at least two limiting holes.

[0019] In some embodiments, the first limiting portion and the main body are an integrated structure.

[0020] Accordingly, it includes a secondary battery as described in any one of the above embodiments.

[0021] Beneficial effect: Compared with the prior art, the secondary battery provided by the embodiment of the present application includes a shell, an electrode assembly and a connector, including a main body and a first limiting part connected to each other, the main body is provided with a receiving cavity and a connecting port connected to the receiving cavity; arranged in the receiving cavity; arranged in the receiving cavity and electrically connected to the electrode assembly, the connector includes a body and a plug-in part, the plug-in part is connected to the side of the body facing the connecting port, the connecting port is used to expose at least part of the plug-in part to the main body, and the first limiting part is arranged on the side of the body away from the plug-in part to limit the connector. The present application sets the first limiting part to limit the connector of the secondary battery, which can avoid relative displacement between the connector and the shell of the secondary battery when the secondary battery is placed in the electrical equipment, thereby avoiding poor contact between the secondary battery and the electrical equipment.

[0022] Correspondingly, the present application also provides an electrical device having the beneficial effects of the secondary battery. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The technical solution and other beneficial effects of the present application will be made apparent by describing in detail the specific implementation methods of the present application in conjunction with the accompanying drawings.

[0024] Figure 1 A schematic diagram of the structure of a secondary battery provided in an embodiment of the present application;

[0025] Figure 2 A schematic structural diagram of a secondary battery provided in an embodiment of the present application from another angle;

[0026] Figure 3 for Figure 2 Detailed view of the center circle A;

[0027] Figure 4 A top view of a secondary battery provided in an embodiment of the present application;

[0028] Figure 5 for Figure 4 Sectional view at CC;

[0029] Figure 6 for Figure 5 Detailed view at the middle frame E;

[0030] Figure 7 for Figure 4 Sectional view at the middle BB;

[0031] Figure 8 for Figure 7 Detailed view of the middle frame F;

[0032] Fig. 9 A front view of a secondary battery provided in an embodiment of the present application;

[0033] Fig.10 for Fig. 9 Detailed view of the middle frame G;

[0034] Fig.11 An exploded view of a secondary battery provided in an embodiment of the present application;

[0035] Fig.12 A schematic diagram of the structure of a shell in a secondary battery provided in an embodiment of the present application;

[0036] Fig.13 for Fig.12 Detailed view of the middle frame H;

[0037] Fig.14 A schematic diagram of the structure of a connector in a secondary battery provided in an embodiment of the present application;

[0038] Fig.15 A schematic diagram of the structure of an electrode assembly in a secondary battery provided in an embodiment of the present application.

[0039] Figure markings, 1-shell, 11-main body, 111-accommodating cavity, 112-connecting port, 12-first limiting portion, 13-connecting portion, 14-second limiting portion, 2-electrode assembly, 21-limiting hole, 22-winding core, 23-circuit board, 3-connector, 31-main body, 32-plug-in portion, 33-third limiting portion, 34-fourth limiting portion, 4-cover plate, 5-protective film, 6-protective plate, 7-bolt. DETAILED DESCRIPTION

[0040] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with 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 of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0041] In the description of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or can communicate with each other; it can be directly connected, or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more features.

[0042] The disclosure below provides many different embodiments or examples to realize the different structures of the present application. In order to simplify the disclosure of the present application, the parts and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the present application.

[0043] The connector 3 of the secondary battery is limited by the cover plate 4 and the shell 1. When the secondary battery is installed, the connector 3 of the secondary battery and the connector of the electrical equipment are released and begin to be subjected to force. Under the action of the cover plate 4, the connector 3 of the secondary battery and the shell 1 remain relatively still, thereby completing the connection between the secondary battery and the electrical equipment.

[0044] However, in the current technology, there is a gap in the connection between the cover plate 4 and the shell 1. During the installation process, when the cover plate 4 cannot limit the connector 3 of the secondary battery in the first time, the connector 3 of the secondary battery will move relative to the shell 1, resulting in the connector 3 of the secondary battery and the connector of the electrical equipment cannot be connected in place, thereby causing a poor contact problem.

[0045] In order to solve the technical problem of poor contact when the secondary battery is installed in the electrical equipment, the first embodiment of the present application provides a secondary battery. Figure 1-Figure 6 and Fig.14 , Figure 1 A schematic diagram of the structure of a secondary battery provided in an embodiment of the present application, Figure 2 This is a schematic diagram of the structure of the secondary battery provided in the embodiment of the present application from another angle, Figure 3 for Figure 2 Detailed view of the center circle A. Figure 4 A top view of a secondary battery provided in an embodiment of the present application, Figure 5 for Figure 4 Sectional view at CC, Figure 6 for Figure 5 Detailed picture of the middle frame D. Fig.14 A schematic diagram of the structure of a connector 3 in a secondary battery provided in an embodiment of the present application, wherein the secondary battery comprises a shell 1, an electrode assembly 2 and a connector 3, wherein the shell 1 comprises a main body 11 and a first limiting portion 12 connected to each other, the main body 11 is provided with a accommodating cavity 111 and a connecting port 112 connected to the accommodating cavity 111; the electrode assembly 2 is disposed in the accommodating cavity 111; the connector 3 is disposed in the accommodating cavity 111 and is electrically connected to the electrode assembly 2, the connector 3 comprises a main body 31 and a plug-in portion 32, the plug-in portion 32 is connected to a side of the main body 31 facing the connecting port 112, the connecting port 112 is used to expose at least a portion of the plug-in portion 32 from the main body 11, and the first limiting portion 12 is disposed on a side of the main body 31 away from the plug-in portion 32 to limit the connector 3.

[0046] For details, please refer again to Figure 6 The connection port 112 is used to connect the connector 3 of the secondary battery and the connector of the electrical device through the shell 1. Therefore, when the secondary battery is placed in the electrical device, the connector 3 receives a reaction force from the direction along the connection port 112 to the connector 3. The first limiting portion 12 is arranged on the side of the connector 3 away from the plug-in port, and can limit the connector 3 when the connector 3 is subjected to the reaction force, so as to avoid the relative movement of the connector 3 relative to the shell 1.

[0047] Specifically, the electrode assembly 2 includes at least one winding core 22 and at least one circuit board 23, the winding core 22 and the circuit board 23 are located in the accommodating cavity 111, the circuit board 23 is electrically connected to at least one winding core 22, the connector 3 is electrically connected to the circuit board 23, and the winding core 22 is located on the side of the circuit board 23 away from the connector 3.

[0048] Specifically, the housing 1 further includes a limiting block disposed in the accommodating cavity 111 to limit the circuit board 23 .

[0049] Specifically, the connection port 112 is used to expose at least part of the plug-in portion 32 from the main body 11 , that is, the connection port 112 makes at least part of the plug-in portion 32 not covered by the main body 11 so as to be connected to the connector of the electrical device.

[0050] When placing the secondary battery in the above embodiment into an electrical device, the connector 3 of the secondary battery is in contact with the connector 3 of the electrical device, and the first limiting portion 12 can abut against the connector 3 of the secondary battery to prevent the connector 3 of the secondary battery from being displaced relative to the housing 1, so that the connector 3 of the secondary battery and the connector of the electrical device are connected in place, avoiding poor contact between the connector 3 of the secondary battery and the connector 3 of the electrical device.

[0051] In some embodiments, please refer again to Figure 6 And see Fig.11 , Fig.11 This is an exploded view of a secondary battery provided in an embodiment of the present application. The secondary battery further includes a cover plate 4 , which is connected to the shell 1 . The cover plate 4 is disposed on a side of the body 31 away from the plug-in portion 32 to limit the connector 3 .

[0052] Specifically, part of the cover plate 4 is located on a side of the connector 3 away from the connection port 112 .

[0053] Furthermore, the circuit board 23 is located between a portion of the housing 1 and a portion of the cover plate 4 .

[0054] Furthermore, the cover plate 4 is detachably connected to the shell 1 . Specifically, the cover plate 4 is buckled onto the shell 1 .

[0055] In the above embodiment, the cover plate 4 located on the side of the body 31 away from the plug-in portion 32 can also play a limiting role, so as to provide a reaction force to limit the connector 3 when the connector 3 is connected, so as to avoid the relative displacement of the connector 3 and the housing 1, resulting in poor contact. In addition, the cover plate 4 located on the side of the circuit board 23 and the connector 3 can play a protective role for the circuit board 23 and the connector 3. At the same time, since the first limiting portion 12 can limit the connector 3, the connection method of the cover plate 4 and the housing 1 can be selected to be snap-fitted, so as to facilitate the installation of the cover plate 4.

[0056] In some embodiments, please refer again to Figure 6 The cover plate 4 is located on a side of the first limiting portion 12 close to the electrode assembly 2 .

[0057] It is understandable that, since the cover plate 4 and the housing 1 are detachably connected, the connection between the cover plate 4 and the housing 1 may become loose, and the limiting effect on the connector 3 is not as good as the first limiting portion 12. And since the connector 3 is only connected to the electrode assembly 2 in the direction from the connector 3 to the electrode assembly 2, the connector 3 is more likely to move relative to the housing 1 on the side away from the electrode assembly 2 than on the side close to the electrode assembly 2, and the movement amplitude of the connector 3 on the side away from the electrode assembly 2 is greater than the movement amplitude of the connector 3 on the side close to the electrode assembly 2.

[0058] In the above embodiment, by arranging the cover plate 4 on the side of the first limiting portion 12 close to the electrode assembly 2, that is, arranging the first limiting portion 12 on the side of the cover plate 4 away from the electrode assembly 2, the first limiting portion 12 can limit the connector 3 to the side where relative movement is easier and the relative movement amplitude is larger, so as to better limit the connector 3.

[0059] In some embodiments, see Fig.12 and Fig.13 , Fig.12This is a schematic diagram of the structure of the housing 1 of the secondary battery provided in the embodiment of the present application. Fig.13 for Fig.12 Detailed view of the middle frame H, the shell 1 includes a connecting portion 13, which is connected to the main body 11, and is connected to one end of the first limiting portion 12 along the extension direction of the first limiting portion 12, and the connecting portion 13 is used to connect electrical equipment.

[0060] Furthermore, the connection portion 13 and the electrical device may be connected by one or more of threaded connection and buckle connection. Specifically, in some embodiments, the connection portion 13 has a through hole, and the secondary battery and the electrical device are detachably connected by a bolt 7 passing through the through hole; in other embodiments, the connection portion 13 is a buckle or a groove, and the electrical device has the other of the buckle or the groove, and the secondary battery can be buckled to the electrical device through the connection portion 13.

[0061] It is understandable that, according to actual connection requirements, the connection portion 13 may also be connected to a side of the first limiting portion 12 away from the cover plate 4 , and the connection portion 13 may be disposed inside or outside the accommodating cavity 111 .

[0062] In the above embodiment, by providing the connecting portion 13 at one end of the first limiting portion 12 in the extension direction, the connection between the first limiting portion 12 and the portion near the first limiting portion 12 can be more stable and less prone to shaking, thereby achieving a better limiting effect on the connector 3.

[0063] In some embodiments, please refer again to Fig.13 The housing 1 includes at least two connecting portions 13 , and the at least two connecting portions 13 are arranged at two ends of the first limiting portion 12 along the extending direction of the first limiting portion 12 .

[0064] In the above embodiment, at least two connecting portions 13 are provided along the extension direction of the first limiting portion 12, which can effectively improve the bending resistance of the first limiting portion 12, and further improve the limiting ability of the first limiting portion 12 on the connector 3, thereby further reducing the probability of poor contact between the secondary battery and the electrical equipment.

[0065] In some embodiments, see Figure 7-Figure 10 , Fig.14 and refer again Fig.12 and Fig.13 , Figure 7 for Figure 4 Cross-sectional view at the middle BB, Figure 8 for Figure 7 Detailed view of the middle frame F. Fig. 9 This is a front view of a secondary battery provided in an embodiment of the present application. Fig.10 for Fig. 9 Detailed picture of the middle frame G. Fig.14 The schematic diagram of the structure of the connector 3 in the secondary battery provided in the embodiment of the present application, the connector 3 further includes a third limiting portion 33, the third limiting portion 33 is connected to one side of the body 31 along the extension direction of the first limiting portion 12, or the third limiting portion 33 is connected to one side of the plug-in portion 32 along the extension direction of the first limiting portion 12;

[0066] The housing 1 further includes a second limiting portion 14 , which is connected to the main body 11 . The second limiting portion 14 is connected to a side of the third limiting portion 33 away from the cover plate 4 , so as to limit the connector 3 .

[0067] In some embodiments, the third limiting portion 33 may also be disposed on a side of the connector 3 close to the electrode assembly 2 and / or a side away from the electrode assembly 2 .

[0068] In some embodiments, please refer again to Figure 8 and Fig.10 , the second limiting portion 14 and the third limiting portion 33 fit together to limit the position; in other embodiments, the second limiting portion 14 and the third limiting portion 33 fit together to limit the position.

[0069] Specifically, the third limiting portion 33 is located between the second limiting portion 14 and the cover plate 4. For further information, please refer to Figure 8 The third limiting portion 33 is located between the second limiting portion 14 and a portion of the circuit board 23 .

[0070] In order to prevent the connector 3 from moving away from the cover plate 4 relative to the shell 1, in the above embodiment, a second limiting portion 14 is provided to limit the third limiting portion 33 of the connector 3 to prevent the connector 3 from moving away from the cover plate 4 relative to the shell 1.

[0071] In some embodiments, please refer again to Fig.10 The connector 3 includes at least two third limiting portions 33, and at least two third limiting portions 33 are respectively connected to both sides of the body 31 along the extension direction of the first limiting portion 12, or the third limiting portions 33 are respectively connected to both sides of the plug-in portion 32 along the extension direction of the first limiting portion 12.

[0072] In the above embodiment, at least two third limiting portions 33 are provided to make the connector 3 more stable in the accommodating cavity 111, thereby further reducing the shaking of the connector 3 in the accommodating cavity 111. Fig.13 Correspondingly, the housing 1 also includes at least two second limiting portions 14 corresponding to the third limiting portions 33 , and the connector 3 is limited by providing a plurality of second limiting portions 14 to connect the plurality of third limiting portions 33 .

[0073] In some embodiments, please refer again to Figure 8 , Fig.10 and Fig.14 The connector 3 further includes a fourth limiting portion 34, which is connected to a side of the third limiting portion 33 away from the second limiting portion 14;

[0074] The electrode assembly 2 has a limiting hole 21 , and the fourth limiting portion 34 is disposed through the limiting hole 21 along a direction perpendicular to the extending direction of the first limiting portion 12 to limit the connector 3 .

[0075] It can be understood that the limiting hole 21 is provided on the circuit board 23. Since the circuit board 23 is limited in the accommodating cavity 111 by the limiting block, the housing 1, and the glue connecting the circuit board 23, the fourth limiting portion 34 penetrating the limiting hole 21 can also be limited by the circuit board 23. Specifically, along the direction from the body 31 of the connector to the plug-in portion 32, the first limiting portion 12 and the third limiting portion 33 limit the connector 3; along the direction perpendicular to the body 31 to the plug-in portion 32, the hole wall of the limiting hole 21 formed by the circuit board 23 limits the connector 3.

[0076] In the above embodiment, the connector 3 is limited by providing the limiting hole 21 in the electrode assembly 2 and providing the fourth connecting member capable of passing through the limiting hole 21 in the connector 3 .

[0077] In some embodiments, please refer again to Fig.10 and Fig.15 , Fig.15 This is a schematic structural diagram of an electrode assembly 2 in a secondary battery provided in an embodiment of the present application. The connector 3 includes at least two fourth limiting portions 34 ; and the electrode assembly 2 has at least two limiting holes 21 .

[0078] Specifically, a fourth limiting portion 34 is disposed through a limiting hole 21 .

[0079] Furthermore, the connector 3 includes at least two third limiting portions 33, and the at least two third limiting portions 33 are respectively connected to the two sides of the main body 31 along the extension direction of the first limiting portion 12, or the third limiting portions 33 are respectively connected to the two sides of the plug-in portion 32 along the extension direction of the first limiting portion 12, and at least two fourth limiting portions 34 are arranged on the at least two third limiting portions 33.

[0080] It can be understood that when the number of the fourth limiting portions 34 is at least two, the fourth limiting portions 34 can also limit the rotation of the connector 3, so as to further prevent the connector 3 of the secondary battery from moving relative to the shell 1 when the connector 3 of the secondary battery and the connector of the electrical device are connected, thereby further avoiding poor contact between the secondary battery and the electrical device.

[0081] In some embodiments, please refer again to Fig.11, the secondary battery also includes a protective film 5 and a protective plate 6, which are respectively attached to the two sides of the core 22. Specifically, the protective plate 6 is arranged on the side of the shell 1 away from the accommodating cavity 111, and part of the protective plate 6 is connected to the side of the shell 1 away from the accommodating cavity 111 through a connecting glue; the shell 1 has a through hole, the through hole is connected to the accommodating cavity 111, and part of the protective plate 6 is connected to part of the core 22 through a connecting glue passing through the through hole. Specifically, part of the protective film 5 is attached to the side of the core 22 away from the protective plate 6; part of the protective film 5 is attached to the side of the cover plate 4 away from the circuit board 23. In the above embodiment, the protective plate 6 is used to protect the core 22; the protective film 5 can also provide certain protection for the core 22, and the protective film 5 is also used to mark the parameter information of the secondary battery.

[0082] In some embodiments, please refer again to Fig.12 and Fig.13 The first limiting portion 12 and the main body 11 are an integrated structure.

[0083] Furthermore, in some embodiments, the connecting portion 13 and the main body 11 are an integrated structure; in other embodiments, the second limiting portion 14 and the main body 11 are an integrated structure; in still other embodiments, the main body 11, the first limiting portion 12, the connecting portion 13 and the second limiting portion 14 are an integrated structure.

[0084] In the above embodiment, the first limiting portion 12 and the main body 11 are an integrated structure, which can avoid the problem of inadequate positioning of the connector 3 due to errors between the first limiting portion 12 and the main body 11 during the installation process or tolerances designed in advance for smooth installation, thereby further improving the limiting effect of the first limiting portion 12 on the connector 3.

[0085] Accordingly, the present application also provides an electric device, which includes a secondary battery as described in any one of the above embodiments. The electric device may be a laptop computer or the like.

[0086] By using the secondary battery provided by the above embodiment, the electric device can reduce the probability of poor contact between the secondary battery and the electric device.

[0087] Among them, the electrical equipment can be application devices such as vehicles, mobile phones, portable devices, laptops, ships, spacecraft, electric toys and electric tools. Vehicles can be new energy vehicles, which can be pure electric vehicles, hybrid vehicles or extended-range vehicles, etc.; spacecraft include airplanes, rockets, space shuttles and spacecrafts, etc.; electric toys include fixed or mobile electric toys, such as game consoles, electric car toys, electric ship toys and electric airplane toys, etc.; electric tools include metal cutting electric tools, grinding electric tools, assembly electric tools and railway electric tools, such as electric drills, electric grinders, electric wrenches, electric screwdrivers, electric hammers, impact drills, concrete vibrators and electric planers, etc. The embodiments of the present application do not impose special restrictions on the above-mentioned electrical equipment.

[0088] The above is a detailed introduction to a secondary battery and an electrical device provided in the embodiments of the present application. Specific examples are used in the present application to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the technical solution and its core idea of ​​the present application. Ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some of the technical features therein with equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A secondary battery, characterized in that: include: The housing (1) comprises a main body (11) and a first limiting portion (12) connected to each other, wherein the main body (11) is provided with a receiving cavity (111) and a connecting port (112) communicating with the receiving cavity (111); An electrode assembly (2) is arranged in the accommodating cavity (111); A connector (3) is arranged in the accommodating cavity (111) and is electrically connected to the electrode assembly (2). The connector (3) comprises a main body (31) and a plug-in portion (32). The plug-in portion (32) is connected to a side of the main body (31) facing the connecting port (112). The connecting port (112) is used to allow at least a portion of the plug-in portion (32) to be exposed from the main body (11). The first limiting portion (12) is arranged on a side of the main body (31) away from the plug-in portion (32) to limit the connector (3).

2. The secondary battery according to claim 1, characterized in that: The secondary battery further comprises a cover plate (4), the cover plate (4) being connected to the housing (1), and the cover plate (4) being arranged on a side of the body (31) away from the plug-in portion (32).

3. The secondary battery according to claim 2, characterized in that: The cover plate (4) is located on a side of the limiting portion close to the electrode assembly (2).

4. The secondary battery according to claim 1, characterized in that: The shell (1) comprises a connecting portion (13), the connecting portion (13) being connected to the main body (11), and the connecting portion (13) being connected to one end of the first limiting portion (12) along an extension direction of the first limiting portion (12), and the connecting portion (13) being used for connecting an electrical device.

5. The secondary battery according to claim 4, characterized in that: The housing (1) comprises at least two connecting portions (13), and the at least two connecting portions (13) are arranged at two ends of the first limiting portion (12) along the extension direction of the first limiting portion (12).

6. The secondary battery according to claim 2, characterized in that: The connector (3) further comprises a third limiting portion (33), wherein the third limiting portion (33) is connected to one side of the body (31) along the extension direction of the first limiting portion (12), or the third limiting portion (33) is connected to one side of the plug-in portion (32) along the extension direction of the first limiting portion (12); The housing (1) further comprises a second limiting portion (14), the second limiting portion (14) being connected to the main body (11), and the second limiting portion (14) being connected to a side of the third limiting portion (33) away from the cover plate (4) so ​​as to limit the connector (3).

7. The secondary battery according to claim 6, characterized in that: The connector (3) comprises at least two third limiting portions (33), and the at least two third limiting portions (33) are respectively connected to two sides of the body (31) along the extension direction of the first limiting portion (12), or the third limiting portions (33) are respectively connected to two sides of the plug-in portion (32) along the extension direction of the first limiting portion (12).

8. The secondary battery according to claim 6, characterized in that: The connector (3) further comprises a fourth limiting portion (34), wherein the fourth limiting portion (34) is connected to a side of the third limiting portion (33) away from the second limiting portion (14); The electrode assembly (2) has a limiting hole (21), and the fourth limiting portion (34) is arranged in the limiting hole (21) in a direction perpendicular to the extension direction of the first limiting portion (12) to limit the connector (3).

9. The secondary battery according to claim 8, characterized in that: The connector (3) comprises at least two fourth limiting portions (34); and the electrode assembly (2) has at least two limiting holes (21).

10. The secondary battery according to claim 1, characterized in that: The first limiting portion (12) and the main body (11) are an integrated structure.

11. An electrical device, characterized in that: The invention comprises the secondary battery according to any one of claims 1 to 10.

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