Hold-down bar, battery, and electric device

Abstract

A hold-down bar (13), a battery (10), and an electric device. The hold-down bar (13) comprises: a hold-down bar body (131), in which a mounting groove (1311) is formed; and connectors (132), wherein two ends of the hold-down bar body (131) are respectively connected to the connectors (132), and each connector (132) comprises a main body section (1321) connected to the hold-down bar body (131) and an assembly section (1322) configured to be connected to a case (11) of the battery (10), at least part of the main body section (1321) being mounted in the mounting groove (1311).

Description

Layers, batteries and electrical devices

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application is based on the Chinese patent application with application number: 202410265133.5 and application date of March 7, 2024, and claims the priority of the Chinese patent application. The entire content of the Chinese patent application is hereby introduced into this application as a reference. Technical Field

[0003] The present application relates to the field of battery technology, and in particular to a layering strip, a battery, and an electrical device. Background Art

[0004] During the assembly process of battery cells, a pressure strip is generally used to press multiple battery cells against the box. In related technologies, the entire pressure strip is processed in an integrated molding manner, and the pressure strip is directly pressed onto the battery cell. Then, the two ends of the pressure strip are locked to the box with bolts. However, the integrated pressure strip cannot simultaneously meet the insulation requirements of the battery cell and the strength requirements of the bolt connection, resulting in a serious impact on the reliability of the connection between the pressure strip and the box or battery cell.

[0005] Summary of the Invention

[0006] The present application provides a molding, a battery and an electrical device to meet the insulation requirements of the molding body when it is bonded to the battery cell, thereby optimizing the safety protection performance of the entire battery, while meeting the strength requirements of the joint when connected to the box body, and improving the reliability of the connection between the molding, the battery cell and the box body.

[0007] In a first aspect, an embodiment of the present application provides a pressure strip applied to a battery, comprising:

[0008] A layering strip body, wherein the layering strip body forms a mounting groove;

[0009] The connector is connected to both ends of the pressure strip body, and the connector includes a main section connected to the pressure strip body and an assembly section for connecting to the battery box, and at least a portion of the main section is installed in the installation groove.

[0010] In the above technical solution, through the setting of the above-mentioned pressure strip body and connector, compared with the traditional one-piece molding solution, the pressure strip is adapted to the battery cell and the box at the same time, which greatly improves the insulation performance of the pressure strip body and meets the insulation requirements of the pressure strip body when it is fitted with the battery cell, thereby reducing the probability of serious safety accidents caused by leakage, and then optimizing the safety protection performance of the entire battery. At the same time, it meets the strength requirements of the connector when connected to the box, and realizes a high-strength connection between the connector and the box, preventing the battery from breaking under conditions with large external disturbances, thereby improving the reliability of the connection between the pressure strip, battery cell and box.

[0011] In some embodiments, the thickness of the main body section is smaller than the depth of the mounting groove, and the main body section is connected to the bottom of the mounting groove.

[0012] In some embodiments, the main body section and the mounting groove are connected by gluing.

[0013] In some embodiments, both ends of the pressure strip body are provided with avoidance gaps on one side away from the installation groove.

[0014] In some embodiments, a width of the main body segment along a direction perpendicular to the length direction of the bead body is smaller than a width of the assembly segment along the direction.

[0015] In some embodiments, the layering further comprises:

[0016] A first buffer member is installed in the installation groove and is separated from the joint.

[0017] In some embodiments, the first buffer member is connected to the pressure strip body and the joint by gluing.

[0018] In some embodiments, the layering further comprises:

[0019] A connecting belt, both ends of which are connected to the main body section, the connecting belt is connected to the pressure strip body, and the connecting belt is installed in the installation groove.

[0020] In the above technical solution, the mutual connection between the pressure strip body, the joint and the connecting belt is realized through the setting of the above-mentioned connecting belt. The use of this structure significantly enhances the shear resistance of the joint, reduces the probability of the structural adhesive between the joint and the pressure strip body falling off due to force, further strengthens the overall structure of the pressure strip, and at the same time cooperates with the design of the positioning structure to improve the assembly accuracy between the joint, the pressure strip body and the connecting belt.

[0021] In some embodiments, the connecting strip is connected to the layering strip body by gluing.

[0022] In some embodiments, a portion of the connecting belt is stacked and connected to the main body segment.

[0023] In some embodiments, the surface of the connecting belt connected to the bottom of the mounting groove is flush with the surface of the main body section connected to the bottom of the mounting groove.

[0024] In the above technical solution, by setting the surface of the connecting belt connected to the bottom of the installation groove to be flush with the surface of the main section connected to the bottom of the installation groove, reasonable structural deformation is used to avoid the gap between the connecting belt and the pressure strip body, effectively reducing the use of structural adhesive, achieving cost control, and at the same time reducing the overall weight of the pressure strip, achieving a lightweight design, thereby improving the energy density of the entire battery.

[0025] In some embodiments, the connecting strip includes a first connecting section, a first curved section and a second connecting section, the first connecting section is connected to both ends of the second connecting section, the curved section is connected between the first connecting section and the second connecting section, the first connecting section is fitted with the joint and is located on the side of the joint away from the layering strip body, the second connecting section is fitted with the layering strip body, and the surface of the second connecting section connected to the bottom of the mounting groove is flush with the surface of the main section connected to the bottom of the mounting groove.

[0026] In some embodiments, the main body section includes a first joint section, a second curved section, and a second joint section connected in sequence, the first joint section is fitted with the connecting belt and is located on the side of the connecting belt away from the layering strip body, the second joint section is fitted with the layering strip body, and the surface of the connecting belt connected to the bottom of the installation groove is flush with the surface of the second joint section connected to the bottom of the installation groove.

[0027] In some embodiments, the minimum thickness H1 of the connecting strip satisfies: 0.1 mm ≤ H1 ≤ 50 mm.

[0028] In some embodiments, the length L of the joint satisfies: 10 mm ≤ L ≤ 3000 mm.

[0029] In some embodiments, the minimum thickness H2 of the joint satisfies: H2 ≥ 0.5 mm.

[0030] In a second aspect, an embodiment of the present application provides a battery, comprising:

[0031] a box body, wherein the box body defines a receiving cavity;

[0032] A plurality of battery cells, wherein the plurality of battery cells are installed in the accommodating cavity;

[0033] A plurality of pressure strips as described above are installed on the surfaces of the plurality of battery cells and connected to the box.

[0034] In a third aspect, an embodiment of the present application provides an electrical device, including:

[0035] As the battery mentioned above. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0037] FIG1 is a schematic structural diagram of a vehicle provided in some embodiments of the present application;

[0038] FIG2 is an exploded view of the structure of a battery provided in some embodiments of the present application;

[0039] FIG3 is a schematic diagram of a partial structure of a battery provided in some embodiments of the present application;

[0040] FIG4 is a second schematic diagram of a partial structure of a battery provided in some embodiments of the present application;

[0041] FIG5 is one of the exploded views of the structure of the layer provided in some embodiments of the present application;

[0042] FIG6 is one of the partial structural schematic diagrams of the layering provided in some embodiments of the present application;

[0043] FIG7 is a second exploded view of the structure of the heat conducting member provided in some embodiments of the present application;

[0044] FIG8 is a second schematic diagram of a partial structure of a layer provided in some embodiments of the present application;

[0045] FIG9 is a third schematic diagram of the partial structure of the layer provided in some embodiments of the present application.

[0046] Reference numerals:

[0047] Vehicle 1, motor 20, controller 30;

[0048] Battery 10;

[0049] Box body 11, battery cell 12;

[0050] The pressure strip 13, the pressure strip body 131, the installation groove 1311, the avoidance gap 1312, the joint 132, the main section 1321, the first joint section 13211, the second joint section 13212, the second curved section 13213, the assembly section 1322, the connecting belt 133, the first connecting section 1331, the second connecting section 1332, the first curved section 1333, and the first buffer component 135.

[0051] Bottom guard plate 14. DETAILED DESCRIPTION

[0052] To make the purpose, technical solutions, and advantages of the embodiments of this application more clear, the technical solutions in the embodiments of this application will be clearly described below in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0053] Unless otherwise defined, all technical and scientific terms used in this application have the same meanings as commonly understood by those skilled in the art to which this application belongs. The terms used in the specification of this application are for the purpose of describing specific embodiments only and are not intended to limit this application. The terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned drawings are intended to cover non-exclusive inclusions. The terms "first" and "second" in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order or a primary-secondary relationship.

[0054] References to "embodiments" in this application mean that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described in this application may be combined with other embodiments.

[0055] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," "connected," and "attached" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to direct connections, indirect connections through an intermediate medium, or internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0056] The term "and / or" in this application simply describes an association between related objects, indicating that three possible relationships exist. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this application generally indicates that the related objects are in an "or" relationship.

[0057] The term "multiple" in this application refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).

[0058] The battery cells mentioned in the embodiments of this application may include lithium-ion secondary batteries, lithium-ion primary batteries, lithium-sulfur batteries, sodium-lithium-ion batteries, sodium-ion batteries, or magnesium-ion batteries, etc., and the embodiments of this application do not limit this. The battery cells may be cylindrical, flat, rectangular, or other shapes, etc., and the embodiments of this application do not limit this. Battery cells are generally divided into three types according to the packaging method: cylindrical battery cells, square battery cells, and soft-pack battery cells, and the embodiments of this application do not limit this.

[0059] The battery referred to in the embodiments of this application refers to a single physical module that includes one or more battery cells to provide higher voltage and capacity. For example, the battery referred to in this application may include a battery module or battery pack. A battery generally includes a casing that encloses one or more battery cells or multiple battery modules. The casing prevents liquids or other foreign matter from affecting the charging or discharging of the battery cells.

[0060] A battery cell includes a casing, an electrode assembly, and an electrolyte. The casing is used to hold the electrode assembly and the electrolyte. The electrode assembly consists of a positive electrode sheet, a negative electrode sheet, and a separator. The battery cell mainly relies on the movement of metal ions between the positive electrode sheet and the negative electrode sheet to work. The positive electrode sheet includes a positive electrode collector and a positive electrode active material layer. The positive electrode active material layer is coated on the surface of the positive electrode collector. The positive electrode collector not coated with the positive electrode active material layer protrudes from the positive electrode collector coated with the positive electrode active material layer. The positive electrode collector not coated with the positive electrode active material layer serves as the positive electrode tab. Taking lithium-ion batteries as an example, the material of the positive electrode collector can be aluminum, and the positive electrode active material can be lithium cobalt oxide, lithium iron phosphate, ternary lithium, or lithium manganese oxide, etc. The negative electrode sheet consists of a negative current collector and a negative active material layer. The negative active material layer is coated on the surface of the negative current collector. The negative current collector uncoated with the negative active material layer protrudes from the negative current collector coated with the negative active material layer. The negative current collector uncoated with the negative active material layer serves as the negative electrode tab. The negative current collector can be made of copper, and the negative active material can be carbon, silicon, or other materials. To ensure that high currents can pass without melting, multiple positive electrode tabs are stacked together, and multiple negative electrode tabs are stacked together.

[0061] The material of the isolation film may be PP (polypropylene) or PE (polyethylene), etc. In addition, the electrode assembly may be a wound structure or a laminated structure, but the embodiments of the present application are not limited thereto.

[0062] New energy vehicles have experienced rapid growth in recent years. Within the electric vehicle sector, power batteries, as the power source, play an irreplaceable and important role. A battery consists of a housing and multiple cells housed within it. As a core component in new energy vehicles, batteries have high requirements for both safety and cycle life.

[0063] The inventors found that in general power batteries, in order to accommodate multiple battery cells stably and almost immobilely in the box, a pressure strip is generally used to press the multiple battery cells against the box. In related technologies, the entire pressure strip is processed in an integrated molding manner, and the pressure strip is directly pressed onto the battery cell, and then the two ends of the pressure strip are locked to the box with bolts. However, the integrated pressure strip cannot simultaneously meet the insulation requirements of the battery cell and the strength requirements of the bolt connection, resulting in a serious impact on the reliability of the connection between the pressure strip and the box or the battery cell. Specifically, when the pressure strip is made of insulating material, although the pressure strip can exert excellent insulating material performance in the connection with the battery cell, the strength of the pressure strip in the bolt connection with the box is too low and it is easy to break.

[0064] Based on the above considerations, in order to solve the problem that the integrally molded molding cannot adapt to the battery cell and the box at the same time, the inventor has designed a battery after in-depth research, which is applied to the battery. The battery includes: a molding body and a connector, and the molding body forms a mounting groove; both ends of the molding body are connected to the connector, and the connector includes a main section connected to the molding body and an assembly section for connecting to the battery box, and at least a part of the main section is installed in the mounting groove.

[0065] In a battery of this structure, the pressure strip is set as a split structure composed of a pressure strip body and a joint. On the one hand, this structure uses insulating material for the pressure strip body and fits the pressure strip body to the battery cell, thereby reducing the probability of serious safety accidents caused by leakage, thereby optimizing the safety protection performance of the entire battery. On the other hand, high-strength material is used for the joint to achieve a high-strength connection between the joint and the box body, preventing the pressure strip from breaking when the battery is subjected to large external disturbances, thereby improving the reliability of the connection between the pressure strip, battery cell and box body.

[0066] The present invention provides an electric device that uses a battery as a power source. The electric device may be, but is not limited to, a mobile phone, a tablet, a laptop computer, an electric toy, an electric tool, a battery-powered vehicle, an electric car, a ship, a spacecraft, etc. The electric toy may include a fixed or mobile electric toy, such as a game console, an electric car toy, an electric ship toy, and an electric airplane toy, etc. The spacecraft may include an airplane, a rocket, a space shuttle, and a spacecraft, etc.

[0067] For the convenience of description, the following embodiments are described by taking a vehicle 1 as an example of an electrical device according to an embodiment of the present application.

[0068] As shown in Figure 1, it is a structural schematic diagram of a vehicle 1 according to an embodiment of the present application. The vehicle 1 can be a fuel vehicle, a gas vehicle or a new energy vehicle. The new energy vehicle can be a pure electric vehicle, a hybrid vehicle or an extended-range vehicle, etc. A motor 20, a controller 30 and a battery 10 can be provided inside the vehicle 1. The controller 30 is used to control the battery 10 to supply power to the motor 20. For example, a battery 10 can be provided at the bottom, front or rear of the vehicle 1. The battery 10 can be used to power the vehicle 1. For example, the battery 10 can be used as an operating power source for the vehicle 1, for the circuit system of the vehicle 1, for example, for the working power requirements of the vehicle 1 during startup, navigation and operation. In another embodiment of the present application, the battery 10 can not only serve as an operating power source for the vehicle 1, but also as a driving power source for the vehicle 1, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1.

[0069] In order to meet different power requirements, the battery 10 may include a plurality of battery cells 12 , wherein the plurality of battery cells 12 may be connected in series, in parallel, or in hybrid connection, where hybrid connection refers to a mixture of series and parallel connection.

[0070] As shown in Figure 2, it is an exploded view of the structure of the battery 10 of an embodiment of the present application. The battery 10 includes a case 11 and a plurality of battery cells 12, and the battery cells 12 are used to be accommodated in the case 11. Among them, the case 11 is used to provide assembly space for the battery cells 12, and the case 11 can adopt a variety of structures. In some embodiments, the case 11 can be an open structure. Specifically, the battery 10 can also include a bottom guard plate 14, the case 11 can define a accommodating cavity, the opening of the accommodating cavity can face downward, and a plurality of battery cells 12 can be installed in the accommodating cavity. The bottom guard plate 14 can be connected to the case 11, and the bottom guard plate 14 can be used to block the accommodating cavity.

[0071] In other embodiments, the housing 11 may be a closed structure, comprising a first housing body and a second housing body, the first housing body and the second housing body being mutually covered, and the first housing body and the second housing body jointly defining an assembly space for accommodating the battery cells 12. The second housing body may be a hollow structure with one end open, and the first housing body may be a plate-like structure, with the first housing body covering the open side of the second housing body, so that the first housing body and the second housing body jointly define an assembly space; the first housing body and the second housing body may also be hollow structures with one end open, with the open side of the first housing body covering the open side of the second housing body. Of course, the housing 11 formed by the first housing body and the second housing body may have various shapes, such as a cylinder, a rectangular parallelepiped, etc.

[0072] In the battery 10, the multiple battery cells 12 can be connected in series, in parallel, or in a hybrid configuration. A hybrid configuration refers to a combination of series and parallel connections among the multiple battery cells 12. The multiple battery cells 12 can be directly connected in series, in parallel, or in a hybrid configuration, and then the entire structure of the multiple battery cells 12 is housed within the housing 11. Alternatively, the battery 10 can be constructed by first connecting multiple battery cells 12 in series, in parallel, or in a hybrid configuration to form a battery module, which is then connected in series, in parallel, or in a hybrid configuration to form a single structure housed within the housing 11. The battery 10 may also include other structures, such as a busbar assembly for electrically connecting the multiple battery cells 12.

[0073] According to some embodiments of the present application, as shown in Figures 5-9 , the present application provides a bead 13 for use with a battery 10. The bead 13 includes a bead body 131 and a connector 132. The bead body 131 defines a mounting groove 1311. The connector 132 is connected to both ends of the bead body 131. The connector 132 includes a main section 1321 connected to the bead body 131 and an assembly section 1322 for connecting to the battery case 11. At least a portion of the main section 1321 is mounted within the mounting groove 1311.

[0074] The bead body 131 may be made of insulating material, wherein the insulating material may include but is not limited to polyvinyl chloride, polyethylene, polystyrene, polytetrafluoroethylene or polycarbonate, etc., which are not limited here.

[0075] The cross-sectional shape of the bead body 131 may be U-shaped, H-shaped, or I-shaped, etc., which is not limited here. For example, in some embodiments, the cross-sectional shape of the bead body 131 is U-shaped.

[0076] The joint 132 may be made of metal material, wherein the metal material may include but is not limited to stainless steel, aluminum alloy or titanium alloy, etc., which is not limited here.

[0077] In actual implementation, as shown in Figures 2 to 9, during the assembly process of the pressure strip 13, the main section 1321 of the connector 132 can be connected to the two ends of the pressure strip body 131 by gluing or other means, the pressure strip body 131 can be attached to the surface of multiple battery cells 12, the notch of the mounting groove 1311 can face away from the battery cell 12, the assembly section 1322 of the connector 132 can be protruded toward the box body 11, and the assembly section 1322 can be provided with at least one connection hole for connecting to the box body 11.

[0078] Specifically, as shown in Figures 2-4, the assembly section 1322 of the joint 132 located at one end of the layering body 131 can be connected to the front end beam of the box body 11, and the assembly section 1322 of the joint 132 located at the other end of the layering body 131 can be connected to the rear end beam of the box body 11.

[0079] Among them, the connection method between the connection hole of the assembly section 1322 and the box body 11 includes but is not limited to bolt connection, rivet connection or FDS (Flow Drill Screw, hot melt self-tapping) connection, etc., which is not limited here. For example, in some embodiments, the connection method between the connection hole of the assembly section 1322 and the box body 11 is bolt connection.

[0080] The pressure strip 13 provided in the embodiment of the present application, through the arrangement of the pressure strip body 131 and the connector 132, realizes that the pressure strip 13 is adapted to the battery cell 12 and the box body 11 at the same time, compared with the traditional one-piece molding solution of the pressure strip 13, greatly improving the insulation performance of the pressure strip body 131, and meeting the insulation requirements for the pressure strip body 131 when it is fitted with the battery cell 12, thereby reducing the probability of serious safety accidents caused by leakage, and further optimizing the safety protection performance of the entire battery 10, while meeting the strength requirements for the connector 132 when connected to the box body 11, realizing a high-strength connection between the connector 132 and the box body 11, preventing the pressure strip 13 from breaking when the battery 10 is subjected to large external disturbances, thereby improving the reliability of the connection between the pressure strip 13, the battery cell 12 and the box body 11.

[0081] According to some embodiments of the present application, as shown in FIG. 5 to FIG. 9 , the thickness of the main body section 1321 may be smaller than the depth of the mounting groove 1311 , and the main body section 1321 may be connected to the bottom of the mounting groove 1311 .

[0082] The main body section 1321 can be located in the installation groove 1311, and the main body section 1321 can be attached to the bottom of the installation groove 1311. When the joint 132 is subjected to a large force, the groove wall of the installation groove 1311 can limit the displacement of the main body section 1321 along the width direction of the pressure strip 13 body, so as to prevent the main body section 1321 from causing the assembly section 1322 to deviate and affect the stability of the connection between the assembly section 1322 and the box body 11, and reduce the stress between the main body section 1321 and the assembly section 1322, thereby reducing the probability of brittle fracture between the main body section 1321 and the assembly section 1322.

[0083] Based on the fact that the box body 11 and the bottom guard plate 14 in the above-mentioned battery 10 are connected, the notch of the installation groove 1311 can face the bottom guard plate 14. By setting the main section 1321 not to protrude outside the installation groove 1311, the use of this structural joint 132 can not only resist the bottom guard plate 14, but also prevent the joint 132 from being compressed between the pressure strip body 131 and the bottom guard plate 14 for a long time, causing the bottom guard plate 14 to deform or even squeeze the battery cell 12, and reduce the actual force on the bottom guard plate 14, thereby increasing the stability and reliability of the connection between the box body 11 and the bottom guard plate 14.

[0084] According to some embodiments of the present application, as shown in FIG. 5 to FIG. 9 , the main body section 1321 and the mounting groove 1311 may be connected by gluing.

[0085] Specifically, the main body section 1321 and the mounting groove 1311 can be bonded together using a high-strength structural adhesive, wherein the structural adhesive may include but is not limited to high-performance silicone structural adhesive or neutral transparent silicone structural adhesive, etc., which is not limited here.

[0086] It is understandable that when the battery is in working condition, the temperature of multiple battery cells is high and they will expand to a certain extent. If the joint is connected to the bead body by welding, when the expansion force is transmitted to the bead body, the weld between the bead body and the joint is a stress weak point. When subjected to the expansion force, the weld is very easy to break.

[0087] When the main section 1321 and the mounting groove 1311 are connected by gluing, based on the fact that the structural adhesive can withstand large loads and has stable performance, the structural adhesive between the bead body 131 and the joint 132 can withstand most of the expansion force, reduce the stress on the bead body 131 and the joint 132, and minimize the impact of the expansion of the battery cell 12 on the connection strength between the bead body 131 and the joint 132, thereby extending the service life of the entire bead 13.

[0088] According to some embodiments of the present application, as shown in FIG. 5 to FIG. 9 , both ends of the pressure strip body 131 may be provided with an avoidance notch 1312 on one side away from the installation groove 1311 .

[0089] In this embodiment, as shown in Figures 4 to 9, the pressure strip body 131 can be thin on both sides and thick in the middle along the length direction. Multiple battery cells 12 are provided with tabs at positions corresponding to the two ends of the pressure strip body 131. Multiple battery cells 12 can be connected in series or in parallel with each other through the tabs. During the cyclic charge and discharge process of the battery cells 12, due to the chemical reaction inside the battery cells 12, the thickness of the battery cells 12 will increase, which is manifested as expansion to both sides. At this time, the poles will change with the expansion. The tabs can have a certain degree of ductility to avoid the poles from being pulled and cracked. In places where avoidance gaps 1312 are provided, due to the volume of the tabs themselves, the avoidance gaps 1312 can reserve the space occupied by the tabs in their natural state, and the tolerance caused by the expansion of the tabs must also be taken into account when designing the avoidance gaps 1312. Therefore, the size of the avoidance gaps 1312 needs to be larger than the size of the tabs themselves in actual design to avoid the tabs from being squeezed against the pressure strip 13 when they are extended.

[0090] The pressure strip 13 provided in the embodiment of the present application realizes the avoidance of the bar by the pressure strip body 131 when assembled on multiple battery cells 12 through the setting of the avoidance gap 1312. The size of the avoidance gap 1312 can be adjusted according to actual needs to prevent the bar from being squeezed against the pressure strip 13 when extended, resulting in poor contact between the bar and the pole, thereby maintaining the stability of the power supply of the battery 10, and further optimizing the performance of the battery 10, while reducing the overall weight of the pressure strip 13, which is conducive to increasing the energy density of the battery 10.

[0091] According to some embodiments of the present application, as shown in FIG. 5 and FIG. 7 , a dimension of the main body segment 1321 along the width direction of the bead body 131 may be smaller than a dimension of the assembly segment 1322 along the width direction.

[0092] In this embodiment, as shown in Figures 5 and 7, the main body section 1321 can be integrally formed with the assembly section 1322. Based on the fact that the dimension of the main body section 1321 along the width direction of the pressure strip body 131 can be smaller than the dimension of the assembly section 1322 along the width direction, the entire joint 132 can be approximately T-shaped, and the thickness of the main body section 1321 can be smaller than the thickness of the assembly section 1322. The assembly section 1322 can be provided with at least one connecting hole for connecting to the box body 11, and the connecting hole can pass through the assembly section 1322 along the thickness direction. At this time, the assembly section 1322, which is wider than the main body section 1321, can provide sufficient area for the setting of the connecting hole, and the number of connecting holes can be increased or decreased according to actual needs.

[0093] The pressure strip 13 provided in the embodiment of the present application has a structural design in which the width of the main section 1321 is smaller than the width of the assembly section 1322, so that the entire joint 132 forms a top-heavy T-shape, providing sufficient area for the setting of the connection holes. The number of connection holes can be increased or decreased according to actual needs, thereby increasing the usable width and flexibility of the entire pressure strip 13, and at the same time expanding the contact area between the joint 132 and the box body 11, thereby enhancing the stability and durability of the connection between the joint 132 and the box body 11.

[0094] According to some embodiments of the present application, as shown in FIG. 4 to FIG. 9 , the pressure strip 13 may further include: a first buffer member 135 .

[0095] The first buffer member 135 may be installed in the installation groove 1311 , and the first buffer member 135 and the connector 132 may be separated.

[0096] The first buffer member 135 may include but is not limited to a foam board, pearl cotton or polyurethane foam plastic, etc., which is not limited here.

[0097] In this embodiment, as shown in Figures 4 to 9, the first buffer member 135 can be located in the middle part of the bead body 131, and the thickness of the first buffer member 135 can be greater than the depth of the mounting groove 1311. Based on the high elasticity of the first buffer member 135, after the bead 13 is assembled on multiple battery cells 12 and the box body 11, the first buffer member 135 can be elastically compressed between the bottom guard plate 14 and the bead body 131. Since the two ends of the entire bead 13 are a two-layer structure of the joint 132 combined with the bead body 131, the middle part of the entire bead 13 is a single-layer structure of only the bead body 131, that is, the middle part of the bead 13 is a stress-weakened point, and the setting of the first buffer member 135 can form a protective effect on the middle part of the bead 13.

[0098] The pressure strip 13 provided in the embodiment of the present application, through the provision of the above-mentioned first buffer member 135 and the structural design provided in the middle part of the pressure strip body 131, enables the first buffer member 135 to provide a strong protective effect on the relatively weak middle part. When the battery cell 12 expands, the first buffer member 135 can absorb most of the expansion force to prevent the middle part of the pressure strip body 131 from being brittlely fractured due to the force.

[0099] According to some embodiments of the present application, as shown in FIG. 4 to FIG. 9 , the first buffer member 135 may be connected to the pressure strip body 131 and the joint 132 by gluing.

[0100] Specifically, the first buffer member 135 can be bonded to the pressure strip body 131 and the joint 132 using a high-strength structural adhesive, wherein the structural adhesive may include but is not limited to high-performance silicone structural adhesive or neutral transparent silicone structural adhesive, etc., which is not limited here.

[0101] As shown in Figures 4 to 9, based on the above-mentioned fact that the first buffer component 135 and the joint 132 can be separated, that is, there is a gap between the first buffer component 135 and the joint 132, the structural adhesive can fill the gap between the first buffer component 135 and the joint 132, or the structural adhesive can fill the entire installation groove 1311.

[0102] When the first buffer member 135 is connected to the bead body 131 and the joint 132 by gluing, based on the fact that the structural adhesive can withstand a large load and has stable performance, the structural adhesive between the first buffer member 135 and the bead body 131 and the joint 132 can withstand most of the expansion force, further reducing the stress on the bead body 131 and the joint 132, thereby extending the service life of the entire bead 13.

[0103] According to some embodiments of the present application, as shown in FIG. 7 to FIG. 9 , the pressure strip 13 may further include: a connecting belt 133 .

[0104] Both ends of the connecting belt 133 may be connected to the main body section 1321 , the connecting belt 133 may be connected to the pressure strip body 131 , and the connecting belt 133 may be installed in the installation groove 1311 .

[0105] Considering the strength requirement, the connecting belt 133 may be made of steel. Specifically, the steel may include but is not limited to carbon steel, alloy steel, stainless steel or tool steel, etc., which is not limited here.

[0106] The entire connecting belt 133 does not protrude from the mounting groove 1311, and the connecting belt 133 and the joint 132 can be connected by gluing, bolting or welding. Specifically, when the connecting belt 133 and the joint 132 are connected by gluing, considering the connection strength, there needs to be a sufficiently large contact area between the connecting section and the joint 132 for glue application; when the connecting belt 133 and the joint 132 are connected by bolts, both the connecting belt 133 and the joint 132 can be provided with threaded holes; when the connecting belt 133 and the joint 132 are connected by welding, multiple welding points can be set between the connecting belt 133 and the joint 132, and the welding method can be plug welding, spot welding or projection welding, etc., which is not limited here.

[0107] It should be noted that when the joint 132, the pressure strip body 131 and the connecting belt 133 are assembled, the joint 132, the pressure strip body 131 and the connecting belt 133 can be provided with corresponding positioning structures, wherein the positioning structure can be a positioning hole or a positioning pin, etc., which is not limited here.

[0108] The pressure strip 13 provided in the embodiment of the present application realizes the mutual connection between the pressure strip body 131, the joint 132 and the connecting belt 133 through the setting of the above-mentioned connecting belt 133. The use of this structure significantly enhances the shear resistance of the joint 132, reduces the probability of the structural glue between the joint 132 and the pressure strip body 131 falling off due to force, further strengthens the overall structure of the pressure strip 13, and at the same time cooperates with the design of the positioning structure to improve the assembly accuracy between the joint 132, the pressure strip body 131 and the connecting belt 133.

[0109] According to some embodiments of the present application, as shown in FIG. 7 to FIG. 9 , the connecting belt 133 and the layering strip body 131 may be connected by gluing.

[0110] Specifically, the connection belt 133 and the pressure strip body 131 can be bonded with a high-strength structural adhesive, wherein the structural adhesive may include but is not limited to high-performance silicone structural adhesive or neutral transparent silicone structural adhesive, etc., which is not limited here.

[0111] When the connecting strip 133 and the bead body 131 are connected by gluing, based on the fact that the structural adhesive can withstand large loads and has stable performance, the structural adhesive between the connecting strip 133 and the bead body 131 can withstand most of the expansion force, reduce the stress on the connecting strip 133 and the bead body 131, and minimize the impact of the expansion of the battery cell 12 on the connection strength between the connecting strip 133 and the bead body 131, thereby extending the service life of the entire bead 13.

[0112] According to some embodiments of the present application, as shown in FIG. 7 to FIG. 9 , a portion of the connecting belt 133 may be stacked and connected to the main body segment 1321 .

[0113] In this embodiment, as shown in FIG. 7 and FIG. 8 , a portion of the connecting belt 133 may be attached to a side of the main body segment 1321 facing away from the layering body 131 .

[0114] In other embodiments, as shown in FIG. 9 , a portion of the connecting belt 133 may be attached to a side of the main body section 1321 close to the layer body 131 .

[0115] In some other embodiments, both ends of the connecting belt 133 may abut against and be connected to the main body section 1321 .

[0116] The pressure strip 13 provided in the embodiment of the present application has a structural design in which a portion of the above-mentioned connecting belt 133 is stacked and connected with the main section 1321. Compared with the solution in which the connecting belt 133 abuts the joint 132, the contact area between the connecting belt 133 and the main section 1321 is significantly increased, thereby effectively improving the connection strength between the connecting belt 133 and the joint 132, and further strengthening the overall structure of the pressure strip 13.

[0117] According to some embodiments of the present application, as shown in FIG. 7 to FIG. 9 , the surface of the connecting belt 133 connected to the bottom of the installation groove 1311 may be flush with the surface of the main body section 1321 connected to the bottom of the installation groove 1311 .

[0118] It is understandable that since the thickness of the joint cannot be ignored, when a part of the connecting belt is stacked and connected with the main section, a gap in the thickness of the joint exists between the connecting belt and the layering strip body. However, during the assembly of the connecting belt, this gap needs to be filled with structural adhesive, resulting in an increase in the overall weight of the layering strip.

[0119] By setting the surface of the connecting belt 133 connected to the bottom of the installation groove 1311 to be flush with the surface of the main section 1321 connected to the bottom of the installation groove 1311, and utilizing reasonable structural deformation to avoid the gap between the connecting belt 133 and the pressure strip body 131, the use of structural adhesive is effectively reduced, cost control is achieved, and the overall weight of the pressure strip 13 is reduced, achieving a lightweight design, thereby improving the energy density of the entire battery 10.

[0120] According to some embodiments of the present application, as shown in Figures 7-8, the connecting belt 133 may include a first connecting section 1331, a first curved section 1333 and a second connecting section 1332. The first connecting section 1331 can be connected to both ends of the second connecting section 1332, the first curved section 1333 can be connected between the first connecting section 1331 and the second connecting section 1332, the first connecting section 1331 can be fitted with the joint 132, and the first connecting section 1331 can be located on the side of the joint 132 away from the pressure strip body 131, the second connecting section 1332 can be fitted with the pressure strip body 131, and the surface of the second connecting section 1331 connected to the bottom of the installation groove 1311 can be flush with the surface of the main section 1321 connected to the bottom of the installation groove 1311.

[0121] In this embodiment, as shown in Figures 7-8, the second connecting section 1332 can be connected to the first connecting sections 1331 at both ends through the first curved section 1333. Based on the fact that the first connecting section 1331 is fitted with the joint 132 and the second connecting section 1332 is fitted with the layering body 131, the first curved section 1333 can fill the height difference between the first connecting section 1331 and the second connecting section 1332 to achieve that the fitting surface of the second connecting section 1332 and the layering body 131 is flush with the fitting surface of the main section 1321 and the layering body 131, wherein the outer wall surface of the first curved section 1333 can be arc-shaped, and further, the first curved section 1333 can include two arc sections, and the centers of curvature of the two arc sections are respectively located on both sides of the first curved section 1333.

[0122] The pressure strip 13 provided in the embodiment of the present application has a structural design in which the first curved section 1333 is arranged on the connecting band 133, so that the surface of the second connecting section 1332 connected to the bottom of the mounting groove 1311 is flush with the surface of the main section 1321 connected to the bottom of the mounting groove 1311, thereby reducing the amount of structural adhesive used, effectively saving production costs, and reducing the overall weight of the pressure strip 13, thereby improving the energy density of the entire battery 10.

[0123] According to some embodiments of the present application, as shown in Figure 9, the main body section 1321 may include a first joint section 13211, a second curved section 13213 and a second joint section 13212 connected in sequence, the first joint section 13211 may be fitted with the connecting belt 133, and the first joint section 13211 may be located on the side of the connecting belt 133 away from the pressure strip body 131, the second joint section 13212 may be fitted with the pressure strip body 131, and the surface of the connecting belt 133 connected to the bottom of the installation groove 1311 may be flush with the surface of the second joint section 13212 connected to the bottom of the installation groove 1311.

[0124] In this embodiment, as shown in FIG9 , the joint 132 may include an assembly section 1322, a first joint section 13211, a second curved section 13213, and a second joint section 13212 connected in sequence. The connecting belt 133 may be fitted with the first joint section 13211 of the joint 132 at both ends. The first joint section 13211 may be connected to the second joint section 13212 through the second curved section 13213. Based on the fitting of the first joint section 13211 with the connecting belt 133 and the fitting of the second joint section 13212 with the pressure strip itself, The body 131 is fitted with the second curved section 13213, which can fill the height difference between the first joint section 13211 and the second joint section 13212, so that the fitting surface of the second joint section 13212 and the layering body 131 is flush with the fitting surface of the connecting belt 133 and the layering body 131, wherein the outer wall surface of the second curved section 13213 can be arc-shaped, further, the second curved section 13213 can include two arc sections, and the centers of curvature of the two arc sections can be respectively located on both sides of the second curved section 13213.

[0125] The pressure strip 13 provided in the embodiment of the present application has a structural design in which the second curved section 13213 is arranged on the main section 1321 of the joint 132, so that the surface of the connecting belt 133 connected to the bottom of the mounting groove 1311 is flush with the surface of the second joint section 13212 connected to the bottom of the mounting groove 1311, thereby reducing the amount of structural adhesive used, effectively saving production costs, and reducing the overall weight of the pressure strip 13, thereby improving the energy density of the entire battery 10.

[0126] According to some embodiments of the present application, as shown in FIG8-FIG9 , the minimum thickness H1 of the connecting belt 133 may satisfy: 0.1 mm ≤ H1 ≤ 50 mm.

[0127] Specifically, the minimum thickness H1 of the connecting belt 133 may be 0.1 mm, 5.25 mm, 15 mm, 30.785 mm, 45.5 mm, 50 mm, or other values ​​between 0.1 mm and 50 mm, which is not limited here.

[0128] It should be noted that the minimum thickness H1 of the connecting belt 133 refers to the thickness of the weakest part of the connecting belt 133 . In actual design, the thickness of the connecting belt 133 may be uniform along the length direction.

[0129] The beading 13 provided in the embodiment of the present application, through the above-mentioned range limitation of the minimum thickness H1 of the connecting band 133, prevents the minimum thickness H1 of the connecting band 133 from being too large, which would cause the connecting band 133 to be too heavy, thereby reducing the weight of the beading 13 as much as possible, thereby improving the energy density of the battery 10; and prevents the minimum thickness H1 of the connecting band 133 from being too small, which would cause the connecting band 133 itself to be insufficiently rigid, thereby improving the connection strength between the connecting band 133 and the connector 132, thereby improving the reliability and durability of the overall structure of the beading 13.

[0130] According to some embodiments of the present application, as shown in FIG. 6 and FIG. 8 - FIG. 9 , the length L of the joint 132 may satisfy: 10 mm ≤ L ≤ 3000 mm.

[0131] Specifically, the length L of the joint 132 can be 10 mm, 100.8 mm, 1200 mm, 2100.45 mm, 2500 mm, 3000 mm or other values ​​between 10 mm and 3000 mm, which is not limited here.

[0132] The pressure strip 13 provided in the embodiment of the present application prevents the length L of the joint 132 from being too large, which would result in the joint 132 being too heavy, by limiting the range of the length L of the joint 132, thereby reducing the weight of the pressure strip 13 as much as possible and thereby improving the energy density of the battery 10; and prevents the length L of the joint 132 from being too small, which would result in the contact area between the joint 132 and the pressure strip body 131 being too small, thereby improving the connection strength between the joint 132 and the pressure strip body 131.

[0133] According to some embodiments of the present application, as shown in FIG. 6 and FIG. 8 - FIG. 9 , the minimum thickness H2 of the joint 132 may satisfy: H2 ≥ 0.5 mm.

[0134] Specifically, the minimum thickness H2 of the joint 132 may be 0.5 mm, 1.25 mm, 5 mm, 6.5 mm, or other values ​​greater than 0.5 mm, which is not limited here.

[0135] It should be noted that, since the thickness of the main section 1321 is less than the thickness of the assembly section 1322, the minimum thickness H2 of the joint 132 refers to the thickness of the weakest part of the main section 1321 of the joint 132. In actual design, the thickness of the main section 1321 can be uniform along the length direction.

[0136] The molding 13 provided in the embodiment of the present application, through the above-mentioned range limitation of the minimum thickness H2 of the joint 132, prevents the minimum thickness H2 of the joint 132 from being too small, resulting in insufficient rigidity of the joint 132 itself, thereby improving the connection strength between the joint 132, the connecting belt 133 and the molding body 131, and further improving the reliability and durability of the overall structure of the molding 13.

[0137] According to some embodiments of the present application, the present application also provides a battery 10, which includes a box body 11, multiple battery cells 12 and a pressure strip 13 of any of the above schemes, the box body 11 defines a accommodating cavity, the multiple battery cells 12 are installed in the accommodating cavity, the multiple pressure strips 13 are installed on the surface of the multiple battery cells 12, and the multiple pressure strips 13 are connected to the box body 11.

[0138] Among them, multiple pressure strips 13 are installed on the sides of the electrode terminals of multiple battery cells 12. For example, when the battery 10 is assembled upright, multiple pressure strips 13 can be installed on the top surfaces of multiple battery cells 12; when the battery 10 is assembled inverted, multiple pressure strips 13 can be installed on the bottom surfaces of multiple battery cells 12.

[0139] It should be noted that the battery 10 may also include a second buffer component, which can be installed on the bottom surface of multiple battery cells 12, and the second buffer component and the pressure strip 13 are both located between the bottom guard plate 14 and the multiple battery cells 12. The second buffer component can be used to protect the poles of multiple battery cells 12.

[0140] The second buffer member may include but is not limited to a foam board, pearl cotton or polyurethane foam plastic, etc., which is not limited here.

[0141] According to some embodiments of the present application, the present application further provides an electrical device, comprising the battery 10 of any of the above solutions, and the battery 10 is used to provide electrical energy to the electrical device.

[0142] The power-consuming device may be any of the aforementioned devices or systems using the battery 10 .

[0143] According to some embodiments of the present application, as shown in Figures 3-9 , the present application provides a bead 13 for use with a battery 10. The bead 13 includes a bead body 131 and a connector 132. The bead body 131 defines a mounting groove 1311. The connector 132 is connected to both ends of the bead body 131. The connector 132 includes a main section 1321 connected to the bead body 131 and an assembly section 1322 for connecting to the battery case 11. At least a portion of the main section 1321 is mounted within the mounting groove 1311. The thickness of the main section 1321 is less than the depth of the mounting groove 1311. The main section 1321 is connected to the bottom of the mounting groove 1311 and is glued to the mounting groove 1311. Both ends of the bead body 131, facing away from the mounting groove 1311, are provided with avoidance notches 1312. The width of the main section 1321 along the bead body 131 is less than the width of the assembly section 1322. The bead 13 also includes a first buffer member 135, which is mounted in the mounting groove 1311 and is separated from the joint 132. The first buffer member 135 is glued to the bead body 131 and the joint 132. The beading 13 also includes a connecting strip 133, with both ends connected to the main section 1321. The connecting strip 133 is connected to the beading body 131 and is installed in the mounting groove 1311. The connecting strip 133 and the beading body 131 are connected by adhesive. A portion of the connecting strip 133 is stacked and connected to the main section 1321, and the surface of the connecting strip 133 connected to the bottom of the mounting groove 1311 is flush with the surface of the main section 1321 connected to the bottom of the mounting groove 1311.

[0144] Specifically, the connecting belt 133 and the joint 132 include the following two structural forms.

[0145] First, the connecting belt 133 includes a first connecting section 1331, a first curved section 1333 and a second connecting section 1332. The first connecting section 1331 is connected to both ends of the second connecting section 1332. The first curved section 1333 is connected between the first connecting section 1331 and the second connecting section 1332. The first connecting section 1331 is fitted with the joint 132, and the first connecting section 1331 is located on the side of the joint 132 away from the layering body 131. The second connecting section 1332 is fitted with the layering body 131. The surface of the second connecting section 1332 connected to the bottom of the installation groove 1311 is flush with the surface of the main section 1321 connected to the bottom of the installation groove 1311.

[0146] Secondly, the main body section 1321 includes a first joint section 13211, a second curved section 13213 and a second joint section 13212 connected in sequence. The first joint section 13211 is fitted with the connecting belt 133, and the first joint section 13211 is located on the side of the connecting belt 133 away from the pressure strip body 131. The second joint section 13212 is fitted with the pressure strip body 131, and the surface of the connecting belt 133 connected to the bottom of the installation groove 1311 is flush with the surface of the second joint section 13212 connected to the bottom of the installation groove 1311.

[0147] The minimum thickness H1 of the connecting belt 133 satisfies: 0.1 mm ≤ H1 ≤ 50 mm; the length L of the joint 132 satisfies: 10 mm ≤ L ≤ 3000 mm; and the minimum thickness H2 of the joint 132 satisfies: H2 ≥ 0.5 mm.

[0148] It should be noted that, unless there is any conflict, the embodiments and features in the embodiments of this application can be combined with each other.

[0149] The above are merely preferred embodiments of the present application and are not intended to limit the present application. Those skilled in the art will readily appreciate that various modifications and variations are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present application shall be included within the scope of protection of the present application.

Claims

1. A layer strip, applied to a battery, characterized in that: include: A layering strip body, wherein the layering strip body forms a mounting groove; The connector is connected to both ends of the pressure strip body, and the connector includes a main section connected to the pressure strip body and an assembly section for connecting to the battery box, and at least a portion of the main section is installed in the installation groove.

2. The layering strip according to claim 1, characterized in that The thickness of the main body section is smaller than the depth of the installation groove, and the main body section is connected to the bottom of the installation groove.

3. The layering strip according to claim 2, characterized in that: The main body section and the mounting groove are connected by gluing.

4. The layering strip according to any one of claims 1 to 3, characterized in that Both ends of the pressure strip body are provided with avoidance notches on one side away from the installation groove.

5. The layering strip according to any one of claims 1 to 4, characterized in that: A dimension of the main body section along a width direction of the pressure strip body is smaller than a dimension of the assembly section along the width direction.

6. The layering strip according to any one of claims 1 to 5, characterized in that: Also includes: A first buffer member is installed in the installation groove and is separated from the joint.

7. The layering strip according to claim 6, characterized in that: The first buffer component is connected to the pressure strip body and the joint by gluing.

8. The layering strip according to any one of claims 1 to 7, characterized in that: Also includes: A connecting belt, both ends of which are connected to the main body section, the connecting belt is connected to the pressure strip body, and the connecting belt is installed in the installation groove.

9. The layering strip according to claim 8, characterized in that: The connecting belt is connected to the layering strip body by gluing.

10. The layering strip according to claim 8 or 9, characterized in that: A portion of the connecting belt is stacked and connected to the main body section.

11. The layering strip according to claim 10, characterized in that: The surface of the connecting belt connected to the bottom of the installation groove is flush with the surface of the main body section connected to the bottom of the installation groove.

12. The layering strip according to claim 11, characterized in that: The connecting belt includes a first connecting section, a first curved section and a second connecting section, the first connecting section is connected to both ends of the second connecting section, the curved section is connected between the first connecting section and the second connecting section, the first connecting section is fitted with the joint and is located on the side of the joint away from the layering strip body, the second connecting section is fitted with the layering strip body, and the surface of the second connecting section connected to the bottom of the mounting groove is flush with the surface of the main section connected to the bottom of the mounting groove.

13. The layering strip according to claim 11, characterized in that: The main body section includes a first joint section, a second curved section and a second joint section connected in sequence. The first joint section is fitted with the connecting belt and is located on the side of the connecting belt away from the layering strip body. The second joint section is fitted with the layering strip body. The surface of the connecting belt connected to the bottom of the installation groove is flush with the surface of the second joint section connected to the bottom of the installation groove.

14. The layering strip according to any one of claims 8 to 13, characterized in that: The minimum thickness H1 of the connecting strip satisfies: 0.1 mm ≤ H1 ≤ 50 mm.

15. The layering strip according to any one of claims 1 to 14, characterized in that The length L of the joint satisfies: 10mm≤L≤3000mm.

16. The layering strip according to any one of claims 1 to 15, characterized in that The minimum thickness H2 of the joint satisfies: H2 ≥ 0.5 mm.

17. A battery, characterized in that: include: a box body, wherein the box body defines a receiving cavity; A plurality of battery cells, wherein the plurality of battery cells are installed in the accommodating cavity; A plurality of holding strips according to any one of claims 1 to 16, wherein the plurality of holding strips are mounted on the surfaces of the plurality of battery cells and connected to the box.

18. An electrical device, characterized in that: include: The battery according to claim 17.

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