Battery and electric equipment

Abstract

The utility model relates to a battery and electric equipment, and relates to the technical field of power batteries. The battery comprises a pole core, a top cover and a pole lug part, the top cover is arranged on one side of the pole core, and a pole column is arranged on the top cover. The tab part is arranged on the pole core, the tab part is electrically connected with the output end of the pole core, the tab part comprises a welding area and a non-welding area, and the non-welding area is conducted with the welding area. The welding area is welded and fixed with the pole, and the welding area and the non-welding area are electrically connected with the pole core. A bonding assembly is arranged at the side part of the tab part and is respectively connected with the tab part and the pole core. The battery provided by the utility model can solve the problem that the tab structure in the battery is easy to break in the production and use processes, so that the reject ratio of the battery cell is high.

Description

Technical Field

[0001] The present application relates to the technical field of power batteries, and specifically, to a battery and an electrical device using the same. Background Art

[0002] In the prior art, a current collector is provided inside the battery to collect current and maintain a uniform current distribution inside the battery. A conductor, that is, the tab portion of the battery, is also led out from the current collector for making contact conduction with the outside during battery charging and discharging.

[0003] However, as the requirement for the energy density of the battery becomes higher and higher, both the current collector and the tab portion tend to develop towards being thinner and lighter. The battery cell gradually adopts thinner and thinner current collectors and as narrow a tab structure as possible.

[0004] However, as the current collector and the tab structure are set to be thinner and narrower, the tab structure is prone to breakage and damage during production, processing, connection, and use. Especially during the welding process of the tab structure, the welding edge of the tab is easily pulled and torn, which in turn easily results in a high defective rate of the battery cell. Summary of the Utility Model

[0005] The purpose of the present application is to provide a battery and an electrical device using the same, which can solve the problem that the tab structure in the battery is prone to breakage during production and use, resulting in a high defective rate of the battery cell.

[0006] To achieve the above object, according to the first aspect of the present application, an embodiment of the present application provides a battery, which includes a battery core, a top cover, and a tab portion. The top cover is disposed on one side of the battery core, and a terminal post is provided on the top cover. The tab portion is disposed on the battery core, and the tab portion is electrically connected to the output end of the battery core. The tab portion includes a welding area and a non-welding area, and the non-welding area is in conduction with the welding area. The welding area is fixedly welded to the terminal post, and both the welding area and the non-welding area are electrically connected to the battery core. An adhesive assembly is provided on the side of the tab portion, and the adhesive assembly is respectively connected to the tab portion and the battery core.

[0007] Based on the above embodiments of the present application, the tab is divided into a welding area and a non-welding area. Among them, the structure and function of the welding area are basically the same as those of the tab assembly in the prior art, that is, one end of the welding area is directly connected to the output end of the electrode core, and the other end is connected to the terminal on the top cover by welding or other means, so as to realize the conduction of the input and output lines from the electrode core to the terminal. The non-welding area is respectively connected and conducted with the electrode core and the welding area. At this time, during the production and connection of the tab part, even if the welding area breaks and the connection between the tab part and the electrode core is disconnected, the non-welding area can still serve as an intermediate conduction part to connect the welding area and the electrode core, thereby realizing the conduction from the electrode core to the terminal. Further, the adhesive assembly can protect the tab part on the one hand and can also bear the force instead of the tab part on the other hand, reducing the probability of damage to the tab part caused by the shaking of the electrode core or other reasons. That is, through the above settings, the problem that the tab structure in the battery is prone to breakage during production and use, resulting in a high defective rate of the battery core, is finally solved.

[0008] In some embodiments, an extended tab is formed by extending the welding area. The extended tab is fixed to the side of the electrode core and is electrically connected to the electrode core. The adhesive assembly includes a first adhesive tape and at least one second adhesive tape. The first adhesive tape is respectively connected to the tab part and the electrode core, and at least part of the first adhesive tape is adhered to the extended tab. The second adhesive tape is arranged on the outer periphery of the welding area.

[0009] Based on the above embodiments of the present application, the adhesive assembly includes a first adhesive tape and a second adhesive tape, wherein the first adhesive tape is adhered to the extended tab, that is, the connection part between the tab part and the electrode core is adhesively protected. The extended tab is protected and strengthened by the first adhesive tape, thereby reducing the possibility of tearing at the connection position between the tab part and the electrode core. At the same time, the setting of the second adhesive tape can strengthen and protect other parts of the tab part, such as the non-welding area.

[0010] In some embodiments, the adhesive assembly includes a first adhesive tape and a second adhesive tape, and the first adhesive tape and the second adhesive tape form an L-shaped structure. Alternatively, the adhesive assembly includes a first adhesive tape and two second adhesive tapes, and the first adhesive tape and the two second adhesive tapes form a C-shaped structure. Alternatively, the adhesive assembly includes a first adhesive tape and three second adhesive tapes, and the first adhesive tape and the three second adhesive tapes form a square frame structure.

[0011] Based on the above embodiments of the present application, the first adhesive tape and the second adhesive tape can form three different structures, namely, an L-shaped structure, a C-shaped structure, and a square frame structure. The three different structures correspond to the cases where one, two, and three second adhesive tapes are respectively provided. When the first adhesive tape is provided to strengthen the connection between the tab part and the electrode core, the setting of the second adhesive tape can strengthen and protect other parts of the tab part, and the specific number and structure of the second adhesive tape can be selected according to the actual situation.

[0012] In some embodiments, the second adhesive tape is at least partially adhered to the non-welding area.

[0013] Based on the above embodiments of the present application, the non-welding area is protected and strengthened by adhering the second adhesive tape to the non-welding area.

[0014] In some embodiments, the first adhesive tape and the second adhesive tape are integrally provided between each other and between any two adjacent second adhesive tapes, or the first adhesive tape and the second adhesive tape are separately provided.

[0015] Based on the above embodiments of the present application, when the first adhesive tape and the second adhesive tape are integrally provided between each other and between any two adjacent second adhesive tapes, the adhesive assembly forms a whole. At this time, the strength of the adhesive assembly is relatively high, so the protection and strengthening effect on the tab is better. When the first adhesive tape and the second adhesive tape are separately provided, during the production and assembly processes, the first adhesive tape and the second adhesive tape can be adhesively fixed one by one according to needs, so that they can be set according to different tab structures and strengthening requirements, and the use is more flexible and convenient.

[0016] In some embodiments, the adhesive assembly further includes an adhesive structure. One end of the adhesive structure is connected to the tab, and the other end of the adhesive structure is connected to the side of the electrode core facing away from the first adhesive tape.

[0017] Based on the above embodiments of the present application, through the separately provided adhesive structure and the original first adhesive tape and second adhesive tape, the connection is further strengthened from both sides of the electrode core, thereby enhancing the protection of the tab.

[0018] In some embodiments, the width of the welding area is L1, and the total width of the tab is L2, then L2≥1.5L1.

[0019] Based on the above embodiments of the present application, by widening the whole tab by setting the non-welding area, the strength and current-carrying capacity of the tab can be enhanced. In the specific setting, the non-welding area only needs to ensure that it can connect the output end of the electrode core and the welding area. Therefore, the thickness of the non-welding area itself can be set thinner, so it will not cause the volume and weight of the tab to be too large and affect the energy density of the battery.

[0020] In some embodiments, the battery further includes an insulating film. The insulating film includes a side film and a bottom film. The side film covers the side wall of the electrode core, and the bottom film covers the end of the electrode core facing away from the tab.

[0021] Based on the above embodiments of the present application, the setting of the insulating film can provide insulating protection for the side and bottom of the electrode core, that is, provide insulating protection for other end faces of the electrode core except the end faces where the input and output ends are located.

[0022] In some embodiments, the battery further includes an insulating member, which includes a protective case and a protective cover. One end of the protective case is open, and a receiving cavity is formed inside the protective case. The electrode core and the top cover are both disposed in the receiving cavity, and the protective cover covers the opening of the receiving cavity.

[0023] Based on the above embodiments of the present application, by providing an insulating member as the housing structure outside the electrode core, it is used to insulate and protect the electrode core.

[0024] According to the second aspect of the present application, there is provided an electrical device, which includes the above-mentioned battery.

[0025] Based on the above embodiments of the present application, the electrical device provided by the present application also has the above-mentioned beneficial effects. To avoid repetition, they will not be elaborated here.

[0026] Other features and advantages of the present application will be described in detail in the subsequent specific implementation section. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The drawings are used to provide a further understanding of the present application, and constitute a part of the specification. Together with the following specific implementation, they are used to explain the present application, but do not constitute a limitation to the present application. In the drawings:

[0028] Figure 1 is a schematic structural diagram of the battery provided by the embodiment of the present application.

[0029] Figure 2 is a schematic structural diagram of a bonding assembly in the battery provided by the embodiment of the present application.

[0030] Figure 3 is another schematic structural diagram of the bonding assembly in the battery provided by the embodiment of the present application.

[0031] Figure 4 is a third schematic structural diagram of the bonding assembly in the battery provided by the embodiment of the present application.

[0032] DESCRIPTION OF THE REFERENCE NUMERALS

[0033] 1. Electrode core; 2. Top cover; 21. Terminal; 22. Aluminum plate structure; 23. Upper plastic; 24. Lower plastic; 3. Electrode tab; 31. Welding area; 32. Non-welding area; 4. Bonding assembly; 41. First bonding tape; 42. Second bonding tape; 43. Adhesive structure; 5. Insulating film; 51. Side film; 52. Bottom film; 6. Insulating member; 61. Protective case; 62. Protective cover; 621. Through hole; 7. Connection shell. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0034] In order to make the objectives, technical solutions and advantages of the present application more clear and understandable, the present application will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0035] To make the objectives, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are some, but not all, of the embodiments of the present application. Components of the embodiments of the present application generally described and illustrated in the figures herein may be arranged and designed in a variety of different configurations.

[0036] Therefore, the detailed description of the embodiments of the present application provided in the drawings below is not intended to limit the scope of the present application claimed, but is merely representative of selected embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts fall within the scope of protection of the present application.

[0037] It should be noted that like reference numerals and letters denote like items in the following drawings. Therefore, once an item is defined in one drawing, it does not require further definition and explanation in subsequent drawings.

[0038] In the description of the present application, it should be noted that unless otherwise stated, the orientation or positional relationship indicated by terms such as "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of this application is usually placed during use. This is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present application. In addition, terms such as "first", "second", etc. are only used for descriptive distinction and cannot be understood as indicating or implying relative importance.

[0039] In the description of the present application, it should also be noted that unless otherwise clearly specified and limited, the terms "set", "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 directly connected, or indirectly connected through an intermediate medium, and can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0040] As the application of power batteries becomes more and more extensive, people's requirements for the performance and quality of power batteries are also getting higher and higher. During the preparation process of the battery cells of power batteries, winding or stacking methods are usually adopted, and in both of the above methods, current collectors and tabs need to be provided to output the electrical energy of the power battery to the outside. Specifically, the current collector is arranged inside the power battery to collect current and keep the current distribution inside the power battery uniform, and the tab is further led out on the current collector, and then the tab is connected to the pole column structure of the top cover to realize the output of electrical energy to the outside.

[0041] With the increasing requirements for the energy density of power batteries, in order to reduce the weight of the current collector and the tab and the space occupied in the power battery, the current collector adopted by the battery cell is getting thinner and thinner, and at the same time, the width of the tab is also getting narrower and narrower, ultimately resulting in a significant reduction in both the thickness and width of the tab. Due to the decrease in its own strength, the tab after the above setting is extremely prone to breakage during production and actual application, especially during the welding process of the tab, the welding edge area of the tab is prone to breakage, ultimately leading to a high defective rate of the power battery.

[0042] To solve the above problems in the prior art, according to the first aspect of the present application, a battery is provided. As shown in Figure 1 and Figure 2 , the battery includes a pole core 1, a top cover 2 and a tab part 3. The top cover 2 is arranged on one side of the pole core 1, and a pole column 21 is arranged on the top cover 2. The tab part 3 is arranged on the pole core 1, and the tab part 3 is electrically connected to the output end of the pole core 1. The tab part 3 includes a welding area 31 and a non-welding area 32, and the non-welding area 32 is in conduction with the welding area 31. The welding area 31 is welded and fixed to the pole column 21, and both the welding area 31 and the non-welding area 32 are electrically connected to the pole core 1. A bonding component 4 is arranged on the side of the tab part 3, and the bonding component 4 is respectively connected to the tab part 3 and the pole core 1.

[0043] Based on the above embodiments of the present application, by dividing the tab part 3 into a welding area 31 and a non-welding area 32, wherein the welding area 31 is basically the same as the structure and function of the tab component in the prior art, that is, one end of the welding area 31 is directly connected to the output end of the pole core 1, and the other end is connected to the pole column 21 on the top cover 2 by welding or other means, so as to realize the conduction of the input and output lines from the pole core 1 to the pole column 21. The non-welding area 32 is respectively connected and in conduction with the pole core 1 and the welding area 31. At this time, during the production and connection and use of the tab part 3, even if the welding area 31 breaks and the connection between the welding area 31 and the pole core 1 is disconnected, the non-welding area 32 can still serve as an intermediate conduction component to connect the welding area 31 and the pole core 1, thereby realizing the conduction from the pole core 1 to the pole column 21.

[0044] Furthermore, the provision of the bonding assembly 4 can, on the one hand, protect the tab portion 3, and on the other hand, can also bear the force instead of the tab portion 3, reducing the probability of damage to the tab portion 3 caused by reasons such as the shaking of the electrode core 1. That is, through the above settings, the problem that the tab structure in the battery is prone to breakage during production and use, resulting in a high defective rate of the battery cell, is finally solved.

[0045] Specifically, in the present application, the non-welding area 32 only needs to be electrically connected to the welding area 31 and the electrode core 1 respectively. Under the condition of meeting the above requirements, the structure of the non-welding area 32 can be set in any suitable way.

[0046] In some embodiments of the present application, in order to avoid the non-welding area 32 occupying too much space of the tab portion 3, the non-welding area 32 can be directly set as a metal sheet or a conductive coating at this time. The non-welding area 32 with the structure of the metal sheet or the conductive coating covers the end of the electrode core 1 to achieve electrical connection with the electrode core 1, and then is electrically connected to the welding area 31.

[0047] Based on the above embodiments of the present application, through the provision of the non-welding area 32, while reducing the impact on the energy density of the battery, the current-carrying capacity of the tab portion 3 is enhanced. Even when the welding area 31 is broken, the non-welding area 32 can be used as an intermediate conduction member to connect the electrode core 1 and the welding area 31, and then connect to the terminal post 21. At the same time, the provision of the non-welding area 32 also increases the heat dissipation area of the tab portion 3, facilitating heat dissipation.

[0048] Furthermore, in the present application, the above setting of the tab portion 3 can be applied to various battery cell structures including stacked battery cells and wound battery cells. In the prior art, when the welding area 31 in the tab portion 3 connected to the stacked battery cell is completely broken, the corresponding layer of electrode foils cannot be effectively connected, resulting in a reduction in the overall capacity of the electrode core 1 and an increase in the DC impedance, and finally resulting in poor consistency of the battery cells after forming a battery cell module. However, through the provision of the non-welding area 32, the non-welding area 32 can connect multiple layers of electrode foils at the same time, thereby avoiding the influence on the capacity of the electrode core 1 when the welding area 31 is broken.

[0049] Reference Figures 2 to 4 As shown in, in some embodiments of the present application, an extended tab is formed by extending the welding area 31. The extended tab is fixed to the side of the electrode core 1 and is electrically connected to the electrode core 1; the bonding assembly 4 includes a first bonding tape 41 and at least one second bonding tape 42. The first bonding tape 41 is respectively connected to the tab portion 3 and the electrode core 1, and the first bonding tape 41 is at least partially bonded to the extended tab, and the second bonding tape 42 is disposed on the outer periphery of the welding area 31.

[0050] Based on the above embodiments of the present application, the extended tab is used to realize the electrical connection between the tab portion 3 and the output end of the electrode core 1, and the first adhesive tape 41 is adhered to the extended tab to protect and strengthen the connection position between the welding area 31 and the electrode core 1, and the second adhesive tape 42 is arranged on the outer periphery of the welding area 31 to strengthen other parts of the tab portion 3. Moreover, the arrangement of the first adhesive tape 41 and the second adhesive tape 42 can, on the one hand, strengthen the strength of the tab portion 3, and on the other hand, can bear the force instead of the tab portion 3, thereby reducing the possibility of the tab portion 3 breaking during the production, processing, connection and use processes.

[0051] Specifically, in some embodiments of the present application, the second adhesive tape 42 is at least partially adhered to the non-welding area 32.

[0052] Based on the above embodiments of the present application, in the above arrangement of the present application, the first adhesive tape 41 is used to adhesively protect the position of the extended tab, that is, to protect and strengthen the connection position between the welding area 31 and the electrode core 1. By arranging the second adhesive tape 42 to be adhered to the non-welding area 32, it is ensured that the second adhesive tape 42 protects and strengthens the non-welding area 32, thereby improving the overall strength of the tab portion 3 and avoiding tearing of the tab portion 3 during the processing and use processes.

[0053] In the present application, the number of the second adhesive tapes 42 and the connection relationship between the second adhesive tapes 42 and the first adhesive tape 41 can be selected in any suitable connection manner.

[0054] Reference Figure 2 As shown in

[0055] Based on the above embodiments of the present application, the first adhesive tape 41 and the second adhesive tape 42 form an L-shaped structure. At this time, the first adhesive tape 41 strengthens the connection position between the welding area 31 and the electrode core 1, and one second adhesive tape 42 protects and strengthens the non-welding area 32, thereby playing a role in strengthening and protecting the tab portion 3.

[0056] Reference Figure 3 As shown in

[0057] Based on the above embodiments of the present application, compared with the setting method of only providing one second adhesive tape 42, by adding one more second adhesive tape 42, the protection range of the adhesive assembly 4 is increased. At this time, the adhesive range between the second adhesive tape 42 and the non-welding area 32 is also correspondingly increased, thereby further enhancing the protection effect and improving the tear resistance of the tab 3.

[0058] Alternatively, in another exemplary embodiment provided by the present application, referring to Figure 4 as shown in, the adhesive assembly 4 may include a first adhesive tape 41 and three second adhesive tapes 42, and the first adhesive tape 41 and the three second adhesive tapes 42 form a zigzag structure.

[0059] Based on the above embodiments of the present application, the adhesive assembly 4 with a zigzag structure is disposed around the tab 3 as a whole, that is, a middle area is separately left for the welding connection between the welding area 31 and the pole column 21, and the non-welding area 32 outside the welding area 31 and parts such as the extended tab are protected and strengthened.

[0060] In addition, it should be noted that the above are only three optional exemplary implementation manners provided by the embodiments of the present application. The specific structure and setting method of the adhesive assembly 4 in the present application are not limited to the above three. During the specific production, processing and use processes, the structure of the adhesive assembly 4 can be correspondingly set according to the structure of the tab 3 that needs to be strengthened.

[0061] In the present application, the first adhesive tape 41 and the second adhesive tape 42 can be set in any suitable manner. In an exemplary embodiment provided by the present application, the first adhesive tape 41 and the second adhesive tape 42 can be integrally set between them and between any two adjacent second adhesive tapes 42.

[0062] Based on the above embodiments of the present application, the entire adhesive assembly 4 is integrally processed and formed. During the specific processing, the first adhesive tape 41 and the second adhesive tape 42 can be directly processed into shapes such as L-shaped or C-shaped, or a whole rectangular or circular adhesive structure can be processed first, and then it can be processed into shapes such as L-shaped or C-shaped by cutting or punching on the rectangular or circular adhesive structure. The specific selection can be made according to the actual material and processing technology of the adhesive assembly 4, and the present application does not make specific restrictions on this.

[0063] Specifically, when the first adhesive tape 41 and the second adhesive tape 42 form an L-shaped structure, a rectangular adhesive structure can be processed first, and then a rectangular area can be cut off at a corner of the adhesive structure. When the first adhesive tape 41 and the second adhesive tape 42 form a C-shaped structure, it can also be processed and formed by first processing a rectangular adhesive structure and then cutting off a rectangular area on one side of the adhesive structure. In addition, when the first adhesive tape 41 and the second adhesive tape 42 form a square frame structure, a rectangular adhesive structure can be processed first, and then a hole is punched and cut in the center of the adhesive structure to form the square frame-shaped adhesive assembly 4.

[0064] In addition, since the electrode core 1 itself is usually set to be relatively square, structures such as the tab 3 provided on the electrode core 1 are also usually set to be rectangular structures. Therefore, the adhesive structure can usually be set to be rectangular, so that the adhesive assembly 4 formed after cutting can better fit the electrode core 1. In some other embodiments of the present application, the adhesive structure can also be set to be circular or oval, etc., which can be specifically set according to factors such as the processing technology and the shape of the tab 3.

[0065] In another exemplary embodiment provided by the present application, the first adhesive tape 41 and the second adhesive tape 42, as well as any two adjacent second adhesive tapes 42, can be separately provided, that is, the first adhesive tape 41 and the second adhesive tape 42 can both be separately provided as strip-shaped adhesive elements.

[0066] Specifically, when the first adhesive tape 41 and the second adhesive tape 42 form an L-shaped structure, first bond the first adhesive to the position of the extended tab, and then bond a second adhesive tape 42 to the outer periphery of the welding area 31 to complete the entire bonding process.

[0067] When the first adhesive tape 41 and the second adhesive tape 42 form a C-shaped structure, bond the first adhesive to the position of the extended tab, and then bond the two second adhesive tapes 42 to the outer periphery of the welding area 31.

[0068] When the first adhesive tape 41 and the second adhesive tape 42 form a square frame structure, bond the first adhesive to the position of the extended tab, and then bond the second adhesive tape 42 to the other three sides of the welding area 31.

[0069] Further, when the first adhesive tape 41 and the second adhesive tape 42, as well as any two second adhesive tapes 42, are separately provided, the shapes, sizes, and materials of the first adhesive tape 41 and the second adhesive tape 42 are separately set, and any suitable setting method can be selected without affecting the bonding and protection effects. At the same time, the thicknesses of the first adhesive tape 41 and the second adhesive tape 42 can also be set in any suitable way, and it should also be avoided that the thicknesses of the first adhesive tape 41 and the second adhesive tape 42 are too large to affect the assembly of the battery.

[0070] Further, when both the first adhesive tape 41 and the second adhesive tape 42 are separately provided, when the first adhesive tape 41 and the second adhesive tape 42 are adhesively bonded respectively, between the first adhesive tape 41 and the second adhesive tape 42, and between any two adjacent second adhesive tapes 42, partial overlap can occur, so that the bonded first adhesive tape 41 and second adhesive tape 42 can be fixed to each other to form an integral body, enhancing the overall strength of the adhesive assembly 4, and further strengthening the connection effect of the adhesive assembly 4.

[0071] Reference Figures 2 to 4 As shown in the reference, in some embodiments of the present application, the adhesive assembly 4 may further include a back adhesive structure 43. One end of the back adhesive structure 43 is connected to the tab 3, and the other end of the back adhesive structure 43 is connected to the side of the electrode core 1 that is away from the first adhesive tape 41.

[0072] Based on the above embodiments of the present application, by further providing the back adhesive structure 43 on the other side of the electrode core 1, the connection between the tab 3 and the electrode core 1 is further strengthened, and at the same time, the tab 3 is replaced to bear the force, enhancing the protection for the tab 3.

[0073] In the present application, through the above settings, the overall width of the tab 3 is increased, and the wide tab setting is achieved while reducing the impact on the battery energy density. Specifically, the width of the welding area 31 is L1, and the total width of the tab 3 is L2, where L2 ≥ 1.5L1. The wide tab setting not only enhances the overall ability of the tab 3 to resist tearing, but also enhances the current-carrying capacity of the tab 3, and at the same time increases the heat dissipation area.

[0074] In the present application, the top cover 2 can be set in any suitable way. Reference Figure 1 As shown in the reference, in an exemplary embodiment provided by the present application, the main body of the top cover 2 can be set as an aluminum plate structure 22, the pole column 21 is arranged on the aluminum plate structure 22, and at the same time, an upper plastic 23 and a lower plastic 24 can also be arranged on the aluminum plate structure 22 for insulating protection of the pole column 21.

[0075] Reference Figure 1 As shown in the reference, in some embodiments of the present application, the battery may further include an insulating film 5. The insulating film 5 includes a side film 51 and a bottom film 52, and the side film 51 covers the side wall of the electrode core 1, and the bottom film 52 covers the end of the electrode core 1 that is away from the tab 3.

[0076] Based on the above embodiments of the present application, the setting of the insulating film 5 can enhance the insulating protection for the side and bottom of the electrode core 1, that is, insulate and protect the electrode core 1 except for the end faces where the input and output ends are located.

[0077] Further, in some embodiments of the present application, the battery further includes an insulating member 6. Reference Figure 1As shown in the figure, the insulating member 6 includes a protective shell 61 and a protective cover 62. One end of the protective shell 61 is open, and a receiving cavity is formed inside the protective shell 61. The pole core 1 and the top cover 2 are both disposed in the receiving cavity, and the protective cover 62 is covered at the opening of the receiving cavity.

[0078] Based on the above embodiments of the present application, by providing the insulating member 6 as the housing structure outside the pole core 1, it is used to insulate and protect the pole core 1.

[0079] Specifically, in use, the protective cover 62 may be provided with a through hole. When the battery is assembled, after the protective cover 62 is closed, the pole post 21 protrudes from the through hole, and then in use, the pole post 21 can be connected and conducted with structures such as a bus bar.

[0080] In addition, it should be noted that the battery in the present application is not limited to the above structures and components. In specific use, appropriate structures and components can be selected according to the actual application conditions of the battery. For example, the battery may further include a connecting shell 7. After the pole core 1 is wrapped with an insulating film 5, it is placed in the connecting shell 7, and then the top cover 2 is sealed with the connecting shell 7 to form a bare battery cell. In specific use, the connecting shell 7 can be made of materials such as an aluminum shell.

[0081] Based on the above technical solutions, according to the second aspect of the present application, there is provided an electrical device, which includes the above battery. Among them, the electrical device may be, but is not limited to, a mobile phone, a tablet computer, a notebook computer, an electric toy, an electric tool, a battery car, an electric vehicle, a ship, a spacecraft, and so on. Among them, the electric toy may include a fixed or mobile electric toy. For example, a game console, an electric vehicle toy, an electric ship toy, an electric aircraft toy, and so on. The spacecraft may include an airplane, a rocket, a space shuttle, a spaceship, and so on.

[0082] The electrical device provided by the present application also includes the beneficial effects possessed by the above battery. To avoid repetition, it will not be described in detail here.

[0083] The preferred embodiments of the present application have been described in detail above with reference to the accompanying drawings. However, the present application is not limited to the specific details in the above embodiments. Within the technical concept of the present application, various simple modifications can be made to the technical solutions of the present application, and these simple modifications all belong to the protection scope of the present application.

[0084] In addition, it should be noted that in the above specific embodiments, the various specific technical features described can be combined in any suitable manner without conflict. To avoid unnecessary repetition, the present application will not separately describe various possible combination methods.

[0085] In addition, any combination can be made among various different embodiments of the present application, as long as it does not violate the idea of the present application, and it should also be regarded as the content disclosed by the present application.

Claims

1. A battery, characterized in that: The battery comprises: Pole core; A top cover is arranged on one side of the pole core, and a pole is arranged on the top cover; A pole ear portion, which is arranged on the pole core and is electrically connected to the pole core output end, and includes a welding area and a non-welding area, and the non-welding area is conductively connected to the welding area; The welding area is welded and fixed to the pole, and both the welding area and the non-welding area are electrically connected to the pole core; The side of the pole ear portion is provided with an adhesive component, and the adhesive component is respectively connected to the pole ear portion and the pole core.

2. The battery according to claim 1, characterized in that The welding area is extended to form an extended pole ear, and the extended pole ear is fixed to the side of the pole core and is electrically connected to the pole core; The bonding assembly includes a first bonding tape and at least one second bonding tape, wherein the first bonding tape is respectively connected to the pole lug portion and the pole core, and the first bonding tape is at least partially bonded to the extended pole lug, and the second bonding tape is arranged at the periphery of the welding area.

3. The battery according to claim 2, characterized in that The adhesive assembly includes the first adhesive tape and the second adhesive tape, and the first adhesive tape and the second adhesive tape form an L-shaped structure; or, The adhesive assembly includes the first adhesive tape and two second adhesive tapes, wherein the first adhesive tape and the two second adhesive tapes form a U-shaped structure; or, The adhesive assembly includes the first adhesive tape and three second adhesive tapes, and the first adhesive tape and the three second adhesive tapes form a U-shaped structure.

4. The battery according to claim 2 or 3, characterized in that: The second adhesive tape is at least partially bonded to the non-welding area.

5. The battery according to claim 2, characterized in that The first adhesive tape and the second adhesive tape as well as any two adjacent second adhesive tapes are integrally arranged, or the first adhesive tape and the second adhesive tape are separately arranged.

6. The battery according to claim 2, characterized in that The adhesive assembly further includes an adhesive backing structure, one end of which is connected to the pole ear portion, and the other end of which is connected to a side of the pole core away from the first adhesive tape.

7. The battery according to claim 1, characterized in that The width of the welding area is L1, the total width of the pole ear portion is L2, and L2≥1.5L1.

8. The battery according to claim 1, characterized in that The battery further comprises an insulating film, wherein the insulating film comprises a side film and a bottom film, wherein the side film covers a side wall of the pole core, and the bottom film covers an end of the pole core away from the pole ear portion.

9. The battery according to claim 1, characterized in that The battery also includes an insulating member, which includes a protective shell and a protective cover. One end of the protective shell is open and a receiving cavity is formed inside the protective shell. The pole core and the top cover are both arranged in the receiving cavity, and the protective cover is arranged at the opening of the receiving cavity.

10. An electrical device, characterized in that: The electrical device comprises a battery as claimed in any one of claims 1 to 9.

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