Battery and electric equipment

Abstract

The utility model provides a battery and electric equipment. The battery comprises a shell, a terminal, an insulating part and a gasket, the terminal is arranged at the position of the shell, the insulating part is arranged between the terminal and the shell, the insulating part is used for separating the terminal from the shell, and the gasket is arranged between at least part of the insulating part and the terminal. According to the battery disclosed by the invention, the direct stress of the insulating part is reduced, the insulating part is prevented from being damaged, and the structural stability of the insulating part is improved.

Description

Technical Field

[0001] This application relates to the field of battery structure technology, specifically to batteries and electrical equipment. Background Technology

[0002] Batteries are widely used in energy storage systems, transportation, and consumer electronics. A battery mainly consists of a casing, terminals, and a core.

[0003] In related technologies, batteries typically use an insulating component between the terminals and the casing to prevent direct contact. However, this insulating component is prone to damage during battery assembly. Utility Model Content

[0004] The embodiments of this application provide a battery and electrical device that can improve the technical problem that insulation components are prone to damage.

[0005] In a first aspect, embodiments of this application provide a battery, comprising:

[0006] case;

[0007] Terminals are located at the housing;

[0008] An insulating element is disposed between the terminal and the housing, the insulating element serving to separate the terminal and the housing;

[0009] A gasket is disposed between at least a portion of the insulating element and the terminal.

[0010] In one embodiment, a first end of the gasket is connected to the terminal, a second end of the gasket abuts against the surface of the insulating member, and the second end of the gasket extends along the surface of the insulating member in a direction away from the terminal.

[0011] In one embodiment, the gasket has a connecting surface that abuts against the terminal, wherein at least a portion of the connecting surface is inclined relative to the circumferential direction of the housing.

[0012] In one embodiment, the connecting surface includes a first connecting surface and a second connecting surface connected in sequence, and an included angle α is formed between the first connecting surface and the second connecting surface, wherein 90°≤α≤180°.

[0013] In one embodiment, the gasket is connected to the terminal, the terminal having a support portion, and at least a portion of the insulating member is located between the support portion and the gasket.

[0014] In one embodiment, the terminal is formed with a first snap-fit ​​groove, and at least a portion of the gasket snaps into the first snap-fit ​​groove.

[0015] In one embodiment, the connecting end of the gasket is snapped into the first snap-fit ​​groove, the connecting end of the gasket has a bent structure, and the shape of the connecting end of the gasket is adapted to the first snap-fit ​​groove.

[0016] In one embodiment, the gasket has a second snap-fit ​​groove, and the insulating member snaps into the second snap-fit ​​groove; and / or,

[0017] The insulating element has a third snap-fit ​​groove, and the housing snaps into the third snap-fit ​​groove; and / or

[0018] The insulating component has a fourth snap-fit ​​groove, and the terminal snaps into the fourth snap-fit ​​groove.

[0019] In one embodiment, the battery further includes a winding assembly and a cover plate, the housing forms a mounting cavity, the winding assembly is disposed in the mounting cavity, the cover plate is connected to the housing, and at least a portion of the cover plate protrudes into the mounting cavity and abuts against the winding assembly.

[0020] In one embodiment, the core assembly includes a core and a manifold, the manifold being connected to the side of the core opposite to the inner bottom wall of the housing, and at least a portion of the cover plate abutting the side of the manifold opposite to the core.

[0021] In one embodiment, the cover plate includes a main body portion, a recessed portion, and a connecting portion connected in sequence. The connecting portion is connected to the housing. The recessed portion protrudes into the mounting cavity relative to the main body portion and abuts against the core assembly.

[0022] In one embodiment, along the axial direction of the housing, the area of ​​the recess projected onto the inner bottom wall of the housing is S1, and the area of ​​the cover plate on the side opposite to the winding core is S2, wherein 0.05 ≤ S1 / S2 ≤ 0.5; or,

[0023] The recessed portion is an annular structure with a central diameter of D1 and an outer diameter of D2, wherein 0.2 ≤ D1 / D2 ≤ 0.95.

[0024] In one embodiment, the thickness of the main body portion along the axial direction of the housing is H1, wherein,

[0025] 0.4mm≤H1≤1.2mm; and / or,

[0026] Along the axial direction of the housing, the height between the bottom of the recess and the side of the main body away from the core is H2, where 1≤H2 / H1≤4.5.

[0027] In one embodiment, the cover plate further includes a reinforcing portion, the area of ​​the reinforcing portion on the side opposite to the core assembly is S3, and the area of ​​the cover plate on the side opposite to the core assembly is S2, wherein 0.05≤S3 / S2≤0.5.

[0028] In one embodiment, the reinforcing portion includes a reinforcing groove formed in the cover plate, the reinforcing groove communicating with the recessed portion, the area of ​​the recessed portion on the side opposite to the core assembly being S1, wherein 0.05≤(S1+S3) / S2≤0.95.

[0029] Secondly, embodiments of this application provide an electrical device including the battery described above.

[0030] The beneficial effects of the embodiments of this application are as follows:

[0031] In the embodiments of this application, by placing a gasket between at least a portion of the insulating member and the terminal, the at least portion of the insulating member will not directly contact the terminal. Thus, during battery assembly or use, at least a portion of the force exerted by the terminal will act directly on the gasket instead of the insulating member, thereby reducing the direct force on the insulating member, preventing damage to the insulating member, and improving the structural stability of the insulating member. Attached Figure Description

[0032] 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.

[0033] Figure 1 This is a schematic diagram of the battery structure provided in an embodiment of this application;

[0034] Figure 2 This is a cross-sectional view of the battery provided in an embodiment of this application;

[0035] Figure 3 This is provided by the embodiments of this application. Figure 2 Enlarged structural diagram at point A;

[0036] Figure 4 Provided for embodiments of this application Figure 2 Enlarged structural diagram at point B;

[0037] Figure 5 One of the partial structural schematic diagrams of a battery provided for an embodiment of this application;

[0038] Figure 6 This is a second schematic diagram of a partial structure of a battery provided for an embodiment of this application. Detailed Implementation

[0039] 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.

[0040] The following is combined with Figures 1 to 6 This application describes the battery and electrical device.

[0041] According to the embodiments of the first aspect of this application, such as Figure 1 , Figure 2 and Figure 3 The battery includes a housing 1, terminals 2, an insulating element 3, and a gasket 4. Terminals 2 are located at the housing 1, the insulating element 3 is located between the terminals 2 and the housing 1, and the insulating element 3 is used to separate the terminals 2 and the housing 1. The gasket 4 is located between at least part of the insulating element 3 and the terminals 2.

[0042] According to the battery of the present application embodiment, by placing the gasket 4 between at least a portion of the insulating member 3 and the terminal 2, the at least a portion of the insulating member 3 will not directly contact the terminal 2. Thus, during battery assembly or use, at least a portion of the force exerted by the terminal 2 will act directly on the gasket 4 instead of the insulating member 3, thereby reducing the direct force on the insulating member 3, avoiding damage to the insulating member 3, and improving the structural stability of the insulating member 3.

[0043] In related technologies, during battery assembly, terminal 2 is directly pressed against insulating component 3. Terminal 2 is generally a metal component with high structural strength, making insulating component 3 susceptible to damage under direct pressure from terminal 2. This application addresses this issue by placing a gasket 4 between at least part of insulating component 3 and terminal 2. The gasket 4 reduces the direct force exerted by terminal 2 on insulating component 3, thereby preventing damage to insulating component 3.

[0044] In some embodiments, the first end of the gasket 4 is connected to the terminal 2, the second end of the gasket 4 abuts against the surface of the insulating member 3, and the second end of the gasket 4 extends along the surface of the insulating member 3 in a direction away from the terminal 2.

[0045] Thus, when the force of terminal 2 is transmitted to the insulating component 3 through the gasket 4, the second end of the gasket 4 extends along the surface of the insulating component 3, effectively increasing the contact area between the gasket 4 and the insulating component 3. The gasket 4 can disperse the force of terminal 2, reduce the pressure on the insulating component 3, and thus effectively prevent damage to the insulating component 3.

[0046] In some embodiments, the contact area between the gasket 4 and the insulating member 3 is smaller than the contact area between the gasket 4 and the terminal 2.

[0047] Thus, the contact area between the gasket 4 and the terminal 2 is greater than the contact area between the gasket 4 and the insulating component 3. The contact area between the gasket 4 and the terminal 2 can be regarded as the indirect contact area between the insulating component 3 and the terminal 2. That is, this embodiment can increase the contact area between the insulating component 3 and the terminal 2, which can effectively prevent the insulating component 3 from being crushed by the terminal 2.

[0048] In some embodiments, such as Figure 2 and Figure 3 The gasket 4 has a connecting surface 41 that abuts against the terminal 2, wherein at least a portion of the connecting surface 41 is inclined relative to the circumferential direction of the housing 1.

[0049] Therefore, by designing the surface of the gasket 4 that abuts against the terminal 2 as an inclined surface, when connecting the terminal 2 and the gasket 4, the terminal 2 can deform toward the inclined surface, which is beneficial to the connection between the terminal 2 and the gasket 4.

[0050] When the terminal 2 and the gasket 4 are riveted, the inclined connecting surface 41 facilitates the deformation of the terminal 2, which is beneficial to the deformation or flow of the metal material of the terminal 2, so that the terminal 2 and the gasket 4 can be riveted together smoothly, ensuring the riveting effect of the terminal 2 and the gasket 4.

[0051] When the connecting surface 41 of the gasket 4 and the terminal 2 is not inclined, the terminal 2 is difficult to deform toward the gasket 4, which affects the riveting effect of the gasket 4 and the terminal 2.

[0052] Specifically, such as Figure 2 and Figure 3 The connecting surface 41 includes a first connecting surface 411 and a second connecting surface 412 connected in sequence, and an included angle α is formed between the first connecting surface 411 and the second connecting surface 412, wherein 90°≤α≤180°.

[0053] Thus, the included angle space formed between the first connecting surface 411 and the second connecting surface 412 can be riveted to the terminal 2. During riveting, the terminal 2 can deform into the included angle space, ensuring the riveting effect between the terminal 2 and the gasket 4.

[0054] If the included angle between the first connecting surface 411 and the second connecting surface 412 is less than 90°, the terminal 2 is difficult to deform into the included angle space, which can easily affect the riveting effect between the terminal 2 and the gasket 4. If the included angle between the first connecting surface 411 and the second connecting surface 412 is greater than 180°, the gasket 4 is difficult to rivet with the terminal 2, which can affect the connection effect between the terminal 2 and the gasket 4. Therefore, this application sets the included angle between the first connecting surface 411 and the second connecting surface 412 between 90° and 180°.

[0055] In some examples, the connection surface 41 is formed on the side of the gasket 4 facing the interior space of the housing 1.

[0056] In some embodiments, such as Figure 2 and Figure 3 The gasket 4 is connected to the terminal 2, the terminal 2 has a support portion 21, and at least part of the insulating member 3 is located between the support portion 21 and the gasket 4.

[0057] Thus, when the gasket 4 and the terminal 2 are connected, the support portion 21 of the terminal 2 and the gasket 4 can cooperate to limit the position of the insulating component 3, thereby realizing the connection and cooperation of the gasket 4, the terminal 2 and the insulating component 3.

[0058] A snap-fit ​​space can be formed between the support portion 21 of terminal 2 and the gasket 4, at least part of the insulating member 3 can be snapped into the snap-fit ​​space, so that terminal 2, insulating member 3 and gasket 4 can be connected and cooperate to form an assembly.

[0059] In some embodiments, such as Figure 2 and Figure 3 Terminal 2 has a first snap-fit ​​groove 22, and at least part of the gasket 4 snaps into the first snap-fit ​​groove 22.

[0060] In this way, at least part of the gasket 4 is snapped into the first snap-fit ​​groove 22 of the terminal 2, realizing the snap-fit ​​connection between the gasket 4 and the terminal 2, which helps to improve the connection stability between the terminal 2 and the gasket 4.

[0061] Specifically, the connecting end of the gasket 4 is snapped into the first snap-fit ​​groove 22. The connecting end of the gasket 4 has a bent structure, and its shape is adapted to the first snap-fit ​​groove 22. In this way, designing the first snap-fit ​​groove 22 as a bent shape allows the first snap-fit ​​groove 22 to be adapted to the connecting end of the gasket 4. At the same time, the bent structure of the first snap-fit ​​groove 22 and the gasket 4 helps to improve the snap-fit ​​stability between the gasket 4 and the first snap-fit ​​groove 22.

[0062] In some embodiments, such as Figure 2 and Figure 3 The gasket 4 has a second snap-fit ​​groove 42, and the insulating member 3 is snapped into the second snap-fit ​​groove 42.

[0063] In this way, the insulating component 3 is snapped into the second snap-fit ​​groove 42 of the gasket 4, realizing the snap-fit ​​connection between the gasket 4 and the insulating component 3, which helps to improve the connection stability and convenience of the gasket 4 and the insulating component 3.

[0064] In some embodiments, such as Figure 2 and Figure 3 The insulating component 3 has a third snap-fit ​​groove 31, and the housing 1 snaps into the third snap-fit ​​groove 31.

[0065] In this way, the housing 1 and the third snap-fit ​​groove 31 of the insulating component 3 are snapped together, realizing the snap-fit ​​connection between the housing 1 and the insulating component 3, which helps to improve the connection stability and convenience of the insulating component 3 and the housing 1.

[0066] In some embodiments, the insulating member 3 is formed with a fourth snap-fit ​​groove, and the terminal 2 is snapped into the fourth snap-fit ​​groove.

[0067] In this way, by snapping terminal 2 into the fourth snap-fit ​​groove of insulating component 3, the snap-fit ​​connection between terminal 2 and insulating component 3 is achieved, which helps to improve the connection stability and convenience of terminal 2 and insulating component 3.

[0068] In some embodiments, such as Figure 2 and Figure 4 The battery also includes a winding core assembly 5 and a cover plate 6. The housing 1 forms a mounting cavity 11. The winding core assembly 5 is disposed in the mounting cavity 11. The cover plate 6 is connected to the housing 1. At least part of the cover plate 6 protrudes into the mounting cavity 11 and abuts against the winding core assembly 5.

[0069] Thus, by connecting the cover plate 6 and the housing 1, the protruding structure of the cover plate 6 protrudes into the mounting cavity 11. Since the winding core assembly 5 is located within the mounting cavity 11, the protruding structure of the cover plate 6 abuts against the winding core assembly 5 within the mounting cavity 11, thereby limiting the positioning of the winding core assembly 5. In other words, this application can achieve the positioning and fixing of the winding core 51 using the cover plate 6, ensuring the installation stability of the winding core assembly 5. Compared to the related technologies that use the groove formed by the housing 1 to limit the positioning of the winding core assembly 5, the housing 1 of this application does not need to form a groove, thus avoiding the situation where the housing 1 is stretched due to the formation of the groove, preventing the surface coating of the housing 1 from becoming thinner, and improving the performance of the battery.

[0070] In related technologies, batteries primarily use grooves formed in the housing 1 to limit and fix the core assembly 5. This can easily cause the housing 1 to be stretched during the formation of the grooves, resulting in a thinner surface coating. Furthermore, since the grooves are generally formed on the sidewalls of the housing 1, meaning there is a certain distance between the grooves and the top of the housing 1, the space within the housing 1 available for arranging the core 51 is limited to the space between the grooves and the inner bottom wall of the housing 1, thus restricting the height of the core 51. This application configures at least a portion of the cover plate 6 to protrude into the mounting cavity 11, allowing the cover plate 6 to abut against the core assembly 5 to limit and fix it. Simultaneously, the groove structure of the housing 1 can be eliminated, preventing the housing 1 from being stretched due to the formation of the grooves, preventing the surface coating of the housing 1 from thinning, improving battery performance, and increasing the utilization rate of the internal space of the housing 1, which is beneficial for increasing the height of the core assembly 5.

[0071] In some examples, the cover plate 6 is attached to the open end of the housing 1.

[0072] Specifically, such as Figure 2 and Figure 4 The core assembly 5 includes a core 51 and a manifold 52. The manifold 52 is connected to the side of the core 51 away from the inner bottom wall of the housing 1, and at least part of the cover plate 6 abuts against the side of the manifold 52 away from the core 51.

[0073] Thus, the busbar 52 is located between the cover plate 6 and the winding core 51, and at least a portion of the cover plate 6 abuts against the side of the busbar 52 opposite to the winding core 51. The cover plate 6 and the inner bottom wall of the housing 1 cooperate to clamp the busbar 52 and the winding core 51, achieving a limiting and fixing effect on them. Consequently, the housing 1 does not need to form a groove, thus avoiding stretching of the housing 1 due to groove formation, preventing thinning of the surface coating of the housing 1, and improving battery performance. This allows the cover plate 6 to abut against the winding core assembly 5 to achieve limiting and fixing of the winding core assembly 5. Simultaneously, the groove structure of the housing 1 can be eliminated, preventing stretching of the housing 1 due to groove formation, preventing thinning of the surface coating of the housing 1, improving battery performance, and increasing the utilization rate of the internal space of the housing 1, which is beneficial for increasing the height of the winding core assembly 5.

[0074] In some embodiments, such as Figure 2 and Figure 4 The busbar 52 includes a first connecting section 521, a second connecting section 522 and a third connecting section 523 connected in sequence. The first connecting section 521 is connected to the tab of the core 51, and the third connecting section 523 is connected to the housing 1.

[0075] Specifically, such as Figure 6The second connecting section 522 is spaced apart from the housing 1 to form a gap between the second connecting section 522 and the housing 1, which facilitates the installation of an encapsulation structure at the gap.

[0076] Specifically, such as Figure 5 The second connecting section 522 is attached to the housing, ensuring the connection stability between the manifold 52 and the housing 1.

[0077] In some embodiments, such as Figure 2 and Figure 4 The cover plate 6 includes a main body 61, a recessed portion 62 and a connecting portion 63 connected in sequence. The connecting portion 63 is connected to the housing 1. The recessed portion 62 protrudes into the mounting cavity 11 relative to the main body 61. The recessed portion 62 abuts against the core assembly 5.

[0078] Thus, the connecting part 63 is connected to the housing 1 to achieve the connection between the cover plate 6 and the housing 1. The recessed part 62 protrudes into the mounting cavity 11 relative to the main body part 61. When the connecting part 63 is connected to the housing 1, the recessed part 62 abuts against the core assembly 5, and the recessed part 62 can limit and fix the core assembly 5. This allows the cover plate 6 to abut against the core assembly 5 to limit and fix the core assembly 5. At the same time, the groove structure of the housing 1 can be eliminated, avoiding the housing 1 from being stretched due to the formation of the groove, preventing the surface coating of the housing 1 from becoming thinner, improving the performance of the battery, and also increasing the utilization rate of the internal space of the housing 1, which is beneficial to increasing the height of the core assembly 5.

[0079] In some examples, the side of housing 1 opposite to the inner bottom wall of housing 1 is connected to the connecting part 63.

[0080] In some examples, the recessed portion 62 is fixedly connected to the busbar 52 by welding. Exemplary examples include laser welding, and welding methods such as peripheral welding or partial welding. It should be noted that this is merely an illustrative example of the connection method between the recessed portion 62 and the busbar 52, and is not a specific limitation. For example, the recessed portion 62 can also be connected to the busbar 52 by snap-fit.

[0081] Specifically, along the axial direction of the housing 1, the area of ​​the concave portion 62 projected onto the inner bottom wall of the housing 1 is S1, and the area of ​​the cover plate 6 on the side opposite to the core 51 is S2, where 0.05≤S1 / S2≤0.5.

[0082] It should be noted that the recessed portion 62 is used to abut against the winding core assembly 5 to achieve the limiting and fixing of the winding core assembly 5. If the ratio of S1 to S2 is less than 0.05, the area of ​​the recessed portion 62 is small, and the recessed portion 62 is difficult to play an effective abutment and limiting role for the winding core assembly 5. If the ratio of S1 to S2 is greater than 0.5, the recessed portion 62 is prone to interference with other structures of the battery. Therefore, this application sets the ratio of S1 to S2 between 0.05 and 0.5.

[0083] Specifically, such as Figure 2 and Figure 4 The concave portion 62 is a ring structure with a central diameter of D1 and an outer diameter of D2 for the cover plate 6, where 0.2 ≤ D1 / D2 ≤ 0.95.

[0084] It should be noted that if the ratio of the center diameter of the recessed portion 62 to the outer diameter of the cover plate 6 is less than 0.2, it means that the recessed portion 62 is too close to the center of the cover plate 6, which may easily interfere with other structures of the battery. If the ratio of the center diameter of the recessed portion 62 to the outer diameter of the cover plate 6 is greater than 0.95, it means that the recessed portion 62 is too close to the edge of the cover plate 6, which may easily affect the structural stability of the cover plate 6. Therefore, this application sets the ratio of the center diameter of the recessed portion 62 to the outer diameter of the cover plate 6 between 0.2 and 0.95.

[0085] Specifically, the bottom radius (R) of the concave portion 62 is greater than 0.2 mm.

[0086] It should be noted that the sharp bottom of the groove can create a stress concentration point, which can easily lead to cracks or even fracture under load (especially cyclic load or impact). Setting the bottom radius (R) of the concave portion 62 to be greater than 0.2 mm helps to reduce stress concentration and improve structural strength.

[0087] In some embodiments, such as Figure 2 and Figure 4 Along the axial direction of the housing 1, the thickness of the main body 61 is H1, wherein 0.4mm≤H1≤1.2mm.

[0088] It should be noted that if the thickness of the main body 61 is less than 0.4 mm, the structural strength of the main body 61 is low. If the thickness of the main body 61 is greater than 1.2 mm, it will have a greater impact on the overall size of the battery. Therefore, this application sets the thickness of the main body 61 between 0.4 mm and 1.2 mm.

[0089] Specifically, such as Figure 2 and Figure 4 Along the axial direction of the housing 1, the height between the bottom of the concave portion 62 and the side of the main body 61 away from the core 51 is H2, where 1≤H2 / H1≤4.5.

[0090] It should be noted that if the ratio of H2 to H1 is less than 1, it means that the length of the concave portion 62 protruding into the interior of the housing 1 along the axial direction of the housing 1 is too short, and the concave portion 62 is difficult to effectively limit and fix the winding core assembly 5. If the ratio of H2 to H1 is greater than 4.5, it means that the length of the concave portion 62 protruding into the interior of the housing 1 along the axial direction of the housing 1 is too long, which can easily have a significant impact on the overall size of the battery. Therefore, this application sets the ratio of H2 to H1 between 1 and 4.5.

[0091] In some embodiments, such as Figure 2 and Figure 4 The cover plate 6 also includes a reinforcing part 64, the area of ​​the reinforcing part 64 on the side away from the core assembly 5 is S3, and the area of ​​the cover plate 6 on the side away from the core assembly 5 is S2, wherein 0.05≤S3 / S2≤0.5.

[0092] Thus, the reinforcing part 64 can improve the structural strength of the cover plate 6.

[0093] It should be noted that if the ratio of S3 to S2 is less than 0.05, the reinforcing part 64 will have difficulty in effectively strengthening the cover plate 6. If the ratio of S3 to S2 is greater than 0.5, the reinforcing part 64 will easily interfere with other structures. Therefore, this application sets the ratio of S3 to S2 between 0.05 and 0.5.

[0094] In some embodiments, the reinforcing portion 64 includes a reinforcing groove formed in the cover plate 6, the reinforcing groove communicating with the recessed portion 62, the area of ​​the side of the recessed portion 62 opposite to the core assembly 5 being S1, wherein 0.05≤(S1+S3) / S2≤0.95.

[0095] It should be noted that if the ratio of (S1+S3) to S2 is less than 0.05, the concave portion 62 will have difficulty in effectively limiting and fixing the core assembly 5, and the reinforcing portion 64 will have difficulty in effectively reinforcing the cover plate 6. If the ratio of (S1+S3) to S2 is greater than 0.95, the reinforcing portion 64 and / or the concave portion 62 will easily interfere with other structures. Therefore, this application sets the ratio of (S1+S3) to S2 between 0.05 and 0.95.

[0096] According to an embodiment of the second aspect of this application, the electrical device includes the battery described above.

[0097] According to the embodiments of this application, the electrical equipment has a gasket 4 disposed between at least a portion of the insulating member 3 and the terminal 2, so that at least a portion of the insulating member 3 does not directly contact the terminal 2. Therefore, during battery assembly or use, at least a portion of the force exerted by the terminal 2 will act directly on the gasket 4 instead of the insulating member 3, which helps to reduce the direct force on the insulating member 3, avoid damage to the insulating member 3, improve the structural stability of the insulating member 3, and thus ensure the stability of the battery, so that the electrical equipment can work stably.

[0098] 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.

[0099] 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; Terminals are located at the housing; An insulating element is disposed between the terminal and the housing, the insulating element serving to separate the terminal and the housing; A gasket is disposed between at least a portion of the insulating element and the terminal.

2. The battery according to claim 1, characterized in that, The first end of the gasket is connected to the terminal, the second end of the gasket abuts against the surface of the insulating member, and the second end of the gasket extends along the surface of the insulating member in a direction away from the terminal.

3. The battery according to claim 1, characterized in that, The gasket has a connecting surface that abuts against the terminal, wherein at least a portion of the connecting surface is inclined relative to the circumferential direction of the housing.

4. The battery according to claim 3, characterized in that, The connecting surface includes a first connecting surface and a second connecting surface connected in sequence, and an included angle α is formed between the first connecting surface and the second connecting surface, wherein 90°≤α≤180°.

5. The battery according to claim 1, characterized in that, The gasket is connected to the terminal, the terminal has a support portion, and at least a portion of the insulating member is located between the support portion and the gasket.

6. The battery according to claim 1, characterized in that, The terminal has a first snap-fit ​​groove, and at least a portion of the gasket snaps into the first snap-fit ​​groove.

7. The battery according to claim 6, characterized in that, The connecting end of the gasket is snapped into the first snap-fit ​​groove. The connecting end of the gasket has a bent structure, and the shape of the connecting end of the gasket is adapted to the first snap-fit ​​groove.

8. The battery according to claim 1, characterized in that, The gasket has a second snap-fit ​​groove, and the insulating element snaps into the second snap-fit ​​groove; and / or The insulating element has a third snap-fit ​​groove, and the housing snaps into the third snap-fit ​​groove; and / or The insulating component has a fourth snap-fit ​​groove, and the terminal snaps into the fourth snap-fit ​​groove.

9. The battery according to any one of claims 1 to 8, characterized in that, The battery also includes a winding core assembly and a cover plate. The housing forms a mounting cavity, the winding core assembly is disposed in the mounting cavity, and the cover plate is connected to the housing. At least a portion of the cover plate protrudes into the mounting cavity and abuts against the winding core assembly.

10. The battery according to claim 9, characterized in that, The core assembly includes a core and a manifold, the manifold being connected to the side of the core away from the inner bottom wall of the housing, and at least a portion of the cover plate abutting against the side of the manifold away from the core.

11. The battery according to claim 9, characterized in that, The cover plate includes a main body, a recessed portion, and a connecting portion connected in sequence. The connecting portion is connected to the housing. The recessed portion protrudes into the mounting cavity relative to the main body and abuts against the core assembly.

12. The battery according to claim 11, characterized in that, Along the axial direction of the housing, the area of ​​the recess projected onto the inner bottom wall of the housing is S1, and the area of ​​the cover plate on the side opposite to the winding core is S2, wherein 0.05 ≤ S1 / S2 ≤ 0.5; or, The recessed portion is an annular structure with a central diameter of D1 and an outer diameter of D2, wherein 0.2 ≤ D1 / D2 ≤ 0.

95.

13. The battery according to claim 11, characterized in that, Along the axial direction of the housing, the thickness of the main body is H1, wherein, 0.4mm≤H1≤1.2mm; and / or, Along the axial direction of the housing, the height between the bottom of the recess and the side of the main body away from the core is H2, where 1≤H2 / H1≤4.

5.

14. The battery according to claim 11, characterized in that, The cover plate also includes a reinforcing portion, the area of ​​the reinforcing portion on the side away from the core assembly is S3, and the area of ​​the cover plate on the side away from the core assembly is S2, wherein 0.05≤S3 / S2≤0.

5.

15. The battery according to claim 14, characterized in that, The reinforcing portion includes a reinforcing groove formed in the cover plate, the reinforcing groove communicating with the concave portion, the area of ​​the concave portion on the side opposite to the core assembly being S1, wherein 0.05≤(S1+S3) / S2≤0.

95.

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

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