Top cover patch, battery monomer, battery and electric device
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHONGQING TALENT NEW ENERGY CO LTD
- Filing Date
- 2025-06-20
- Publication Date
- 2026-06-12
AI Technical Summary
Existing batteries have the risk of loose assembly when multiple battery cells are assembled into a group, which can cause the battery cells to shake. In addition, the production efficiency is low and the cost is high.
The design of the top cover patch is adopted. By setting the middle section and the side section on the body, they are adjacent and separable. The exposed area of the adhesive layer is used to bond and fix the end cover to the pressure strip, avoiding the need for opening holes and secondary glue application, and simplifying the process.
This achieves insulation isolation between battery cells, reduces production costs, improves production efficiency, reduces battery weight, and enhances battery assembly stability.
Smart Images
Figure CN224355376U_ABST
Abstract
Description
Technical Field
[0001] This utility model generally relates to the field of battery technology, and specifically to a top cover patch, a battery cell, a battery, and an electrical device. Background Technology
[0002] Batteries are made up of multiple battery cells stacked together. However, existing batteries have a problem with loose assembly after multiple battery cells are assembled into a group, which makes it easy for the battery cells to shake inside the battery during use. Utility Model Content
[0003] In view of the above-mentioned defects or deficiencies in the prior art, it is desirable to provide a top cover patch, a battery cell, a battery and an electrical device that can effectively utilize the adhesive layer of the top cover patch, without the need to set a hollow area and apply glue twice, to achieve the bonding and fixing of the pressure strip and the end cover, reduce battery processing costs, simplify the process, save time, improve production efficiency, and at the same time reduce battery weight.
[0004] This utility model provides a top cover patch, comprising:
[0005] The body has an adhesive layer on one surface. The body includes a middle section and a side section located on at least one side of the middle section. The side section and the middle section are adjacent to each other and can be separated from each other so that after the side section or the middle section is removed, the area of the adhesive layer corresponding to the side section or the middle section forms an exposed area.
[0006] As an optional solution, a partition structure is provided on the main body, which defines the middle section and the side section on the main body.
[0007] Alternatively, the side segments and the middle segments are independent of each other, and the edges of the side segments are in contact with or separated from the edges of the middle segments.
[0008] As an optional solution, side sections are provided on both sides opposite to the middle section.
[0009] As an optional option, the area of each side segment is 5%-20% of the body area.
[0010] As an optional solution, the area of the exposed area is greater than or equal to 50 square millimeters and less than or equal to the area of the adhesive layer.
[0011] As an optional solution, at least one corner adjacent to the middle section and the side section is a chamfered structure, and / or at least one corner of the side section is a chamfered structure.
[0012] As an optional solution, the top cover patch also includes clearance holes that penetrate the body and the adhesive layer.
[0013] Secondly, this utility model provides a battery cell, including the top cover patch of the first aspect.
[0014] As an optional solution, the housing includes a shell and an end cap covering the opening of the shell. A protective layer is provided on the outer periphery of the shell. The protective layer has a flange that is attached to the surface of the end cap near the edge. A top cover patch is attached to the end cap and covers the flange.
[0015] Thirdly, this utility model provides a battery, including the battery cell of the second aspect.
[0016] As an optional solution, the battery also includes a housing and a pressure strip, with the pressure strip and battery cells housed inside the housing, and the exposed areas bonded and fixed to the pressure strip.
[0017] Fourthly, this utility model provides an electrical device, including the battery described in the third aspect.
[0018] The top cover patch of this utility model is designed with a main body consisting of a middle section and a side section. The side section and the middle section are adjacent to each other but can be separated. This facilitates reliable insulation between battery cells. After removing the side section or the middle section, the end cover and the pressure strip can be bonded and fixed using the exposed area of the corresponding side section or the middle section through the adhesive layer. This eliminates the need for drilling holes and applying adhesive to the top cover patch, thus achieving the bonding and fixing of the end cover and the pressure strip. This reduces battery processing costs, simplifies the process, saves time, improves production efficiency, and also reduces battery weight. Attached Figure Description
[0019] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:
[0020] Figure 1 This is a schematic diagram of the structure of a top cover patch according to an embodiment of this application;
[0021] Figure 2 This is a schematic diagram of the structure of a top cover patch according to an embodiment of this application (side segments removed).
[0022] Figure 3 This is a schematic diagram of the structure of a battery cell according to an embodiment of this application (without a top cover patch).
[0023] Figure 4 for Figure 3 A schematic diagram of the direction A in the middle;
[0024] Figure 5 This is a schematic diagram of the structure of a battery cell according to an embodiment of this application (with a top cover patch).
[0025] Figure 6for Figure 5 A schematic diagram of the direction A in the middle;
[0026] Figure 7 This is a schematic diagram of the structure of a battery cell according to an embodiment of this application (with the side section of the top cover patch removed).
[0027] Figure 8 for Figure 7 A schematic diagram of the direction A in the middle;
[0028] Figure 9 This is a schematic diagram of the structure of a battery according to an embodiment of this application.
[0029] In the picture,
[0030] 10. Top cover patch;
[0031] 11. Body, 111. Middle section, 112. Side section, 12. Adhesive layer, 121. Exposed area, 13. Partition structure, 14. Clearance hole, 141. Positive electrode post hole, 142. Negative electrode post hole, 143. Pressure relief clearance hole, 144. Marking hole.
[0032] 20. Battery cell; 21. Casing; 22. End cap; 24. Protective layer; 25. Positive terminal; 26. Negative terminal; 27. Pressure relief mechanism;
[0033] 30. Battery, 31. Box body, 32. Pressure strip. Detailed Implementation
[0034] The present application will be further described in detail below with reference to embodiments. It should be understood that the specific embodiments described herein are only for explaining the relevant utility model and are not intended to limit the utility model.
[0035] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present application will now be described in detail with reference to the embodiments.
[0036] For a typical battery cell, the battery cell casing usually includes a housing and an end cap. The end cap closes to the opening of the housing. To facilitate the assembly of the battery cell, the electrode terminals are usually assembled onto the end cap of the battery cell. This allows the electrode terminals, current collectors, and tabs to be stacked and welded together when the end cap is closed with the housing, so as to achieve electrical connection between the electrode terminals and the electrode assembly. Thus, the electrode terminals serve as the output poles of the battery cell to realize the input or output of electrical energy of the battery cell. Finally, the end cap is connected to the housing.
[0037] The inside of a battery typically contains multiple battery cells, which are arranged in groups within the battery casing. To reduce the risk of short circuits between the multiple battery cells, a protective layer (blue film) is usually placed on the outside of the casing, and a top cover patch is placed on the end cap of the casing to achieve insulation and isolation between the battery cells and other battery cells.
[0038] In related technologies, when assembling multiple battery cells into a group, in order to reduce the risk of multiple battery cells shaking in the box, it is usually necessary to bond the battery cell shell to the box and set pressure strips in the battery box. At the same time, by setting hollow areas on the top cover patch corresponding to the two sides of the battery cell terminal post, and then applying glue to the hollow areas again to fix them, the end cover and pressure strip are bonded and fixed, thereby fixing the battery pack and assembling multiple battery cells into a whole, resulting in additional production costs.
[0039] Based on the above issues, such as Figure 1-2 As shown, an embodiment of this application provides a top cover patch 10, comprising:
[0040] The body 11 has an adhesive layer 12 disposed on one surface. The body 11 includes a middle section 111 and a side section 112 located on at least one side of the middle section 111. The side section 112 and the middle section 111 are adjacent to each other, and the side section 112 and the middle section 111 are separable, so that after the side section 112 or the middle section 111 is removed, the area of the adhesive layer 12 corresponding to the side section 112 or the middle section 111 forms an exposed area 121.
[0041] It should be noted that in actual production and processing, in order to improve the insulation effect between the battery cell 20 and the battery box 31, a top cover patch 10 needs to be provided on the end cap 22 of the battery cell 20. The top cover patch 10 usually has multiple functional holes so that components such as electrode terminals and pressure relief structures can be exposed on the top cover patch 10.
[0042] It is understood that the body 11 of the top cover patch 10 refers to the area in contact with the end cover 22. The adhesive layer 12 is provided on one surface of the body 11, which usually means that the entire surface of the top cover patch 10 facing the inside of the battery is provided with the adhesive layer 12, which is beneficial to the adhesion between the top cover patch 10 and the end cover 22. The adhesive layer 12 can be, but is not limited to, any kind of insulating adhesive.
[0043] The body 11 includes a central section 111 and a side section 112 located on at least one side of the central section 111. The central section 111 refers to the area near the center of the body 11. The side section 112 can be located on one, two, three, or four sides of the central section 111, depending on the position of the pressure strip 32 during the assembly of the battery cell. In some embodiments, the side section 112 can be located along a first direction (e.g., ...) of the body 11. Figure 1 (in the X direction) on opposite sides.
[0044] The adjacency of the side segment 112 and the middle segment 111 can be understood as the edge of the side segment 112 contacting the edge of the middle segment 111. In some embodiments, the side segment 112 and the middle segment 111 may be connected to each other. Of course, the side segment 112 and the middle segment 111 may also be independent of each other. The embodiments of this application do not specifically limit this, as long as the middle segment 111 and the side segment 112 can be separated from each other. This facilitates the removal of the side segment 112, exposing the area of the adhesive layer 12 corresponding to the side segment 112 to form an exposed area 121, which is beneficial for fixing the end cap 22 and the pressure strip 32 through the exposed area 121 of the adhesive layer 12.
[0045] The top cover patch 10 of this application solves the problem of low production efficiency caused by the need for drilling holes and applying adhesive twice to the top cover patch 10 to bond and fix the pressure strip 32 to the end cover 22 in related technologies. The top cover patch 10 of this application, by setting the body 11 as a middle section 111 and a side section 112, with the side section 112 and the middle section 111 adjacent but separable, facilitates reliable insulation between battery cells 20. After removing the side section 112, the end cover 22 and the pressure strip 32 can be bonded and fixed using the adhesive layer 12 corresponding to the exposed area 121 of the side section 112. Therefore, it eliminates the need for a hollow area and secondary adhesive application on the top cover patch 10, achieving bonding and fixing of the end cover 22 and the pressure strip 32. This reduces battery processing costs, simplifies the process, saves time, improves production efficiency, and also reduces battery weight.
[0046] As an implementation method, a partition structure 13 is provided on the main body 11, which defines a middle section 111 and a side section 112 on the main body 11.
[0047] The partition structure 13 can be, but is not limited to, a dotted line or indentation formed on the body 11. The presence of the partition structure 13 makes the side section 112 and the middle section 111 connected as one unit. However, in actual use, if the partition structure 13 is broken by external force, the middle section 111 and the side section 112 can be separated from the partition structure 13.
[0048] In other embodiments, the side segment 112 and the middle segment 111 are independent of each other, and the edge of the side segment 112 is in contact with or spaced from the edge of the middle segment 111.
[0049] The side section 112 and the middle section 111 are separate from each other. In actual use, the side section 112 or the middle section 111 can be removed directly.
[0050] In this embodiment, the detachable structure of the side section 112 and the middle section 111 is flexible, easy to implement, and can ensure reliable separation of the side section 112 and the middle section 111.
[0051] In a preferred embodiment, side sections 112 are provided on opposite sides of the middle section 111.
[0052] Specifically, the side segment 112 can be located along the first direction of the body 11 (e.g., Figure 1 The two sides (in the X direction) are opposite each other, which helps to adapt to the position of the pressure strip 32, so that after the side section 112 is removed, the exposed area 121 of the adhesive layer 12 can be bonded and fixed to the pressure strip 32.
[0053] As a feasible approach, the area of each side segment 112 is 5%-20% of the area of the main body 11.
[0054] Specifically, the area of the side section 112 can be, but is not limited to, 5%, 10%, 15%, or 20% of the area of the main body 11. When the area of the side section 112 is less than 5% of the area of the main body 11, the exposed area 121 of the adhesive layer 12 is too small, making it impossible to reliably bond and fix the exposed area 121 to the exposed area 121 of the adhesive layer 12. When the area of the side section 112 is greater than 20% of the area of the main body 11, the proportion of the middle section 111 of the main body 11 is too small, which may cause the top cover patch 10 to fail to reliably achieve the insulation function.
[0055] In a preferred embodiment, the area of the exposed area 121 is greater than or equal to 50 square millimeters and less than or equal to the area of the adhesive layer 120.
[0056] The area of the exposed area 121 may be, but is not limited to, 50 square millimeters, 55 square millimeters, 60 square millimeters, 65 square millimeters, 70 square millimeters, etc.
[0057] In this embodiment, the area of the exposed area 121 is greater than or equal to 50 square millimeters, so that the exposed area 121 has sufficient area to connect with the pressure strip 32, which is beneficial to increase the connection area between the exposed area 121 and the pressure strip 32, thereby improving the connection strength.
[0058] As an implementation method, at least one corner adjacent to the middle segment 111 and the side segment 112 is a chamfered structure, and / or at least one corner of the side segment 112 is a chamfered structure.
[0059] The chamfer structure can be, but is not limited to, rounded chamfers or straight chamfers.
[0060] In this embodiment, the chamfered structure facilitates the removal of the side segment 112. In actual processing, removing the side segment 112 from the chamfered structure is convenient and will not affect the middle segment 111.
[0061] In some embodiments, only one corner and / or two corners adjacent to the middle segment 111 and the side segment 112 may be set as a chamfer structure. There is a gap between the middle segment 111 and the side segment 112 at the chamfer structure, which helps to distinguish the side segment 112 and the middle segment 111, thereby making it easier to remove the side segment 112.
[0062] In some other embodiments, only one corner and / or two corners adjacent to the middle section 111 of the side segment 112 can be set as a chamfered structure, which makes it easy to distinguish the middle section 111 and the side segment 112, and also makes it easy to remove the side segment 112.
[0063] In some other embodiments, one and / or two corners of the side segment 112 away from the middle segment 111 can be set as a chamfered structure; of course, all corners of the entire side can be set as chamfered structures. The embodiments of this application do not limit this, as long as the removal of the side segment 112 can be easily distinguished.
[0064] In some other embodiments, all corners of the side segment 112 and all corners of the middle segment 111 can be set as chamfered structures.
[0065] In a preferred embodiment, the four corners of the body 11 are all chamfered, which facilitates processing.
[0066] As an alternative, the top cover patch 10 also includes a clearance hole 14, which is disposed through the body 11 and the adhesive layer 12, and is used to accommodate functional components.
[0067] The clearance holes 14 can be two or more, at least for accommodating the positive terminal hole 141 and the negative terminal hole 142 of the positive terminal 25 and the negative terminal 26 respectively; in some embodiments, the end cap 22 is provided with a pressure relief mechanism 27, and the top cover patch 10 should also have corresponding pressure relief clearance holes 143 to accommodate the pressure relief mechanism 27. The pressure relief mechanism 27 can be, but is not limited to, pressure relief components such as explosion-proof valves, explosion-proof discs, gas valves, pressure relief valves, or safety valves.
[0068] Of course, in some embodiments, the clearance hole 14 may also include a coding hole 144, which can be used to expose the end cap 22 so as to set an identification code or the like on the end cap 22.
[0069] In the embodiments of this application, the provision of the clearance hole 14 is beneficial for the top cover patch 10 to avoid the functional components on the end cover 22, ensuring insulation between battery cells 20 while not affecting the normal use of a single battery cell 20.
[0070] In summary, the top cover patch 10 of the embodiments of this application, by setting the body 11 as a middle section 111 and a side section 112, with the side section 112 and the middle section 111 being adjacent and separable, is conducive to reliably achieving insulation isolation between battery cells 20. After removing the side section 112, the end cover 22 and the pressure strip 32 can be bonded and fixed by the adhesive layer 12 corresponding to the exposed area 121 of the side section 112. Thus, there is no need to make holes and apply glue twice on the top cover patch 10, which can achieve the bonding and fixing of the end cover 22 and the pressure strip 32, reduce battery processing costs, simplify the process, save time, improve production efficiency, and also reduce battery weight.
[0071] Furthermore, by forming a partition structure 13 on the body 11, the processing method is simple and it is beneficial to form the side section 112 and the middle section 111. Under the action of external force, the side section 112 can be easily removed, so that the area bonded to the corresponding side section 112 forms an exposed area 121.
[0072] Secondly, this utility model provides a battery cell 20, including the top cover patch 10 of the first aspect. It is understood that the battery cell 20 possesses all the features and advantages of the aforementioned top cover patch 10, which will not be repeated here. In summary, the casing of this battery cell 20 has good insulation properties, is easy to process, and has high production efficiency.
[0073] In some embodiments, such as Figure 3-8 As shown, the device includes an outer shell, which includes a housing and an end cap 22 covering the opening of the housing. A protective layer 24 is provided on the outer periphery of the housing. The protective layer 24 has a flange, which is attached to the surface of the end cap 22 near the edge. A top cover patch 10 is attached to the end cap 22 and covers the flange.
[0074] Among them, the battery cell 20 can be a lithium-ion battery, sodium-ion battery, sodium-lithium-ion battery, lithium metal battery, sodium metal battery, lithium-sulfur battery, magnesium-ion battery, nickel-metal hydride battery, nickel-cadmium battery, lead-acid battery, etc.
[0075] The battery cell 20 may be, but is not limited to, a cylindrical battery cell 20, a prismatic battery cell 20, a pouch battery cell 20, or a battery cell 20 of other shapes. The prismatic battery cell 20 includes a square battery cell 20, a blade-shaped battery cell 20, and a multi-prismatic battery, such as a hexagonal prismatic battery.
[0076] A battery cell 20 refers to the smallest unit that makes up a battery. A battery cell 20 includes an end cap 22, a top cover patch 10, a housing, and an electrode assembly.
[0077] Electrode assemblies are components within the battery cell 20 where electrochemical reactions occur. The housing 21 may contain one or more electrode assemblies.
[0078] The housing 21 is an assembly used to cooperate with the end cap 22 to form the internal environment of the battery cell 20, wherein the formed internal environment can accommodate electrode components, electrolyte, and other components. The housing 21 and the end cap 22 can be independent components. An opening can be provided on the housing 21, and the end cap 22 can be used to close the opening to encapsulate the electrode components and electrolyte, etc. Optionally, the end cap 22 and the housing 21 can be integrated. Optionally, the end cap 22 and the housing 21 can form a common connecting surface before other components are inserted into the housing. When it is necessary to encapsulate the interior of the housing 21, the end cap 22 closes the housing 21. The housing 21 can be made of various materials; optionally, the housing 21 can be a steel shell, an aluminum shell, a plastic shell (such as polypropylene), a composite metal shell (such as a copper-aluminum composite shell), or an aluminum-plastic film, etc.
[0079] Understandably, the electrode assembly includes a positive electrode, a negative electrode, and a separator. During the charging and discharging process of the battery cell 20, active ions (such as lithium ions) repeatedly insert and extract between the positive and negative electrodes. The separator, positioned between the positive and negative electrodes, serves to prevent short circuits between them while allowing active ions to pass through.
[0080] The positive electrode can be a positive electrode sheet, which can include a positive electrode current collector and a positive electrode active material disposed on at least one surface of the positive electrode current collector. The positive electrode current collector can be a metal foil or a composite current collector. For example, as a metal foil, it can be aluminum or stainless steel with a silver surface treatment, stainless steel, copper, aluminum, nickel, carbon electrode, carbon, nickel, or titanium, etc. The composite current collector can include a polymer material base layer and a metal layer. The composite current collector can be formed by forming a metal material (aluminum, aluminum alloy, nickel, nickel alloy, titanium, titanium alloy, silver and silver alloy, etc.) on a polymer material substrate (such as a substrate of polypropylene, polyethylene terephthalate, polybutylene terephthalate, polystyrene, polyethylene, etc.). The positive electrode active material can include at least one of the following materials: lithium phosphate, lithium transition metal oxide, and their respective modified compounds. Examples of lithium phosphates include, but are not limited to, lithium iron phosphate (such as LiFePO4, also referred to as LFP), lithium iron phosphate and carbon composites, lithium manganese phosphate (such as LiMnPO4), lithium manganese phosphate and carbon composites, lithium manganese iron phosphate, and lithium manganese iron phosphate and carbon composites.
[0081] The negative electrode can be a negative electrode sheet, which can include a negative electrode current collector and a negative electrode active material disposed on at least one surface of the negative electrode current collector. The negative electrode current collector can be a metal foil, foamed metal, or a composite current collector. For example, as a metal foil, it can be aluminum or stainless steel with silver surface treatment, stainless steel, copper, aluminum, nickel, carbon electrode, carbon, nickel, or titanium, etc. Foamed metal can be foamed nickel, foamed copper, foamed aluminum, foamed alloy, or foamed carbon, etc. The composite current collector can include a polymer material base layer and a metal layer. The composite current collector can be formed by forming a metal material (copper, copper alloy, nickel, nickel alloy, titanium, titanium alloy, silver and silver alloy, etc.) on a polymer material substrate (such as a substrate of polypropylene, polyethylene terephthalate, polybutylene terephthalate, polystyrene, polyethylene, etc.); the negative electrode active material can include at least one of the following materials: artificial graphite, natural graphite, soft carbon, hard carbon, silicon-based materials, tin-based materials, and lithium titanate, etc.
[0082] The separator can be a separator membrane. The main material of the separator membrane can be, but is not limited to, at least one of glass fiber, non-woven fabric, polyethylene, polypropylene, polyvinylidene fluoride, and ceramic.
[0083] The separator can also be a solid electrolyte. The solid electrolyte is placed between the positive and negative electrodes, serving both to transport ions and isolate the positive and negative electrodes.
[0084] In some embodiments, the electrode assembly is a wound structure. The positive electrode and the negative electrode are wound into a wound structure.
[0085] In some embodiments, the electrode assembly has a stacked structure.
[0086] In some embodiments, the electrode assembly may be cylindrical, flat, or polygonal, etc.
[0087] In some embodiments, the electrode assembly has tabs that allow current to be drawn from the electrode assembly. The tabs include a positive tab and a negative tab.
[0088] It is also understandable that the protective layer 24 on the outer periphery of the casing 21 is mainly used for insulation and protection of the battery cells, preventing short circuits between the battery cells 20. The protective layer 24 can be, but is not limited to, a blue film; in actual processing, such as Figure 3 and 4 As shown, end cap 22 and housing 21 are installed together. A blue film is wrapped around the outer periphery of housing 21, covering housing 21 and then folded over to end cap 22. End cap 22 is provided with a positive terminal 25, a negative terminal 26, and an explosion-proof hole 27. Figure 5 and Figure 6As shown, the top cover patch 10 is then attached to the end cover 22 to ensure that the blue film first provides overall insulation protection for the cell, and the top cover patch 10 then provides supplementary protection for the end cover portion that the blue film cannot completely cover, forming complete insulation protection. Furthermore, the top cover patch 10 is attached to the flange of the blue film, avoiding the problem of the flange lifting. Figure 7 and 8 As shown, the side section 112 of the top cover patch 10 is removed, so that the area of the adhesive layer 12 corresponding to the side section 112 forms an exposed area 121, so as to be bonded and fixed with the pressure strip 30.
[0089] Thirdly, this utility model provides a battery, including the battery cell 20 described in the second aspect. It is understood that this battery possesses all the features and advantages of the aforementioned battery cell 20, which will not be repeated here. In summary, this battery has high production efficiency and low production and processing costs.
[0090] In some embodiments, such as Figure 9 As shown, the battery also includes a housing 31 and a pressure strip 32. The pressure strip 32 and the battery cell 20 are both housed in the housing 31, and the exposed area 121 is bonded and fixed to the pressure strip 32.
[0091] It should be noted that the battery may include one, two or more battery cells 20 to provide a single physical module with higher voltage and capacity.
[0092] In some embodiments, the battery can be a battery module. When there are multiple battery cells 20, the multiple battery cells 20 are arranged and fixed to form a battery module.
[0093] In some embodiments, the battery can be a battery pack, which includes a housing 31 and battery cells 20, wherein the battery cells 20 or battery modules are housed in the housing 31.
[0094] In some embodiments, the housing 31 may be part of the vehicle's chassis structure. For example, a portion of the housing 31 may be at least a portion of the vehicle's floor, or a portion of the housing 31 may be at least a portion of the vehicle's crossbeams and longitudinal beams.
[0095] In some embodiments, the battery can be an energy storage device. Energy storage devices include energy storage containers, energy storage cabinets, etc.
[0096] It is understandable that the pressure strip 32 is made of insulating material, such as rubber, plastic or silicone. The pressure strip 32 with this structure can achieve an insulating connection between the pressure strip 32 and the battery cell 20, so as to reduce the risk of leakage or short circuit.
[0097] In actual processing, the battery cell 20 can be placed whole inside the housing 31, or it can be placed upside down inside the housing 31. By attaching the pressure strip 32 to the exposed area 121 on the end cap 22 of the battery cell 20, the battery cell 20 is secured to the battery housing 31. This battery structure allows the end cap 22 of the battery cell 20 to be directly attached to the pressure strip 32, eliminating the need for drilling holes and secondary gluing on the top cover patch 10. This simplifies the processing technology, reduces production costs, and ensures reliable adhesion and fixation between the outer casing and the pressure strip 32. It also improves the structural stability of the battery cell 20 assembled inside the housing 31, reducing the risk of the battery cell 20 shaking or detaching during use, thereby improving the assembly quality and stability of the battery.
[0098] In some embodiments, such as Figure 9 As shown, multiple battery cells 20 are installed inside the housing 31, and the interior of the housing 31 is arranged along the first direction of the housing 31 (e.g., Figure 9 Extending in the Y direction, and in the second direction of the housing 31 (e.g., in the Y direction) Figure 9 Multiple battery cells 20 are arranged in an array along the first and second directions, with the side segment 112 on the top cover patch 10 of each battery cell 20 corresponding to the position of the pressure strip 32. Figure 7 and 8 As shown, after the side section 112 is removed, the end cap 22 is bonded and fixed to the pressure strip 32 through the exposed area 121 of the adhesive layer 12.
[0099] Fourthly, this utility model provides an electrical device, including the battery described in the third aspect. It is understood that this electrical device possesses all the features and advantages of the aforementioned battery, which will not be repeated here.
[0100] Among them, electrical equipment can include vehicles, mobile phones, portable devices, laptops, ships, spacecraft, electric toys, and power tools, etc. Vehicles can be gasoline-powered cars, natural gas-powered cars, or new energy vehicles. New energy vehicles can be pure electric vehicles, hybrid electric vehicles, or range-extended electric vehicles, etc. Spacecraft include airplanes, rockets, space shuttles, and spacecraft, etc. Electric toys include stationary or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, etc. Power tools include metal cutting power tools, grinding power tools, assembly power tools, and railway power tools, such as electric drills, electric grinders, electric wrenches, electric screwdrivers, electric hammers, impact drills, concrete vibrators, and electric planers, etc.
[0101] The above description is merely a preferred embodiment of this application and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of the utility model involved in this application is not limited to the technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the inventive concept. For example, technical solutions formed by substituting the above features with (but not limited to) technical features with similar functions disclosed in this application.
Claims
1. A roof patch, characterized in that include: The body has an adhesive layer on one surface. The body includes a middle section and a side section located on at least one side of the middle section. The side section and the middle section are adjacent to each other and the side section and the middle section are separable, so that after the side section or the middle section is removed, the area of the adhesive layer corresponding to the side section or the middle section forms an exposed area.
2. The cap patch of claim 1, wherein, The main body is provided with a partition structure, which defines the middle section and the side section on the main body; Alternatively, the side segment and the middle segment are independent of each other, and the edge of the side segment is in contact with or spaced from the edge of the middle segment.
3. The top cover patch according to claim 1, characterized in that, The middle section has side sections on both sides opposite to each other.
4. The top cover patch according to any one of claims 1-3, characterized in that, The area of each of the side segments is 5%-20% of the area of the main body.
5. The top cover patch according to claim 4, characterized in that, The area of the exposed area is greater than or equal to 50 square millimeters and less than or equal to the area of the adhesive layer.
6. The top cover patch according to any one of claims 1-3, characterized in that, At least one corner of the middle section adjacent to the side section is a chamfered structure, and / or at least one corner of the side section is a chamfered structure.
7. The top cover patch according to any one of claims 1-3, characterized in that, The top cover patch also includes clearance holes, which are disposed through the body and the adhesive layer.
8. A single battery cell, characterized in that, Includes the top cover patch as described in any one of claims 1-7.
9. The battery cell according to claim 8, characterized in that, The device includes an outer casing, which comprises a housing and an end cap covering the opening of the housing. A protective layer is provided on the outer periphery of the housing, and the protective layer has a flange. The flange is attached to the surface of the end cap near the edge, and a top cover patch is attached to the end cap and covers the flange.
10. A battery, characterized in that, Includes the battery cell described in claim 8 or 9.
11. The battery according to claim 10, characterized in that, The battery also includes a housing and a pressure strip. The pressure strip and the battery cells are both housed in the housing, and the exposed area is bonded and fixed to the pressure strip.
12. Electrical equipment, characterized in that, Includes the battery as described in claim 10 or 11.