Batteries and electrical equipment

Abstract

This application provides a battery and an electrical device. The battery includes a casing with a receiving cavity, and a mounting hole in the casing communicating with the receiving cavity; a terminal assembly, including a terminal body and a mounting member, the terminal body being disposed on the mounting member, and the mounting member being mounted to the casing through the mounting hole; and a cell assembly located within the receiving cavity, the cell assembly including a cell body and a conductive member, one end of the conductive member being electrically connected to the cell body, and the other end of the conductive member being electrically connected to the terminal body, the conductive member being bent and forming at least two bending grooves; along the height direction of the battery, the bending groove away from the terminal has a height H between its end in the bending direction and the upper surface of the cell body, the height H satisfying: 0.1mm ≤ H ≤ 0.7mm. This application can not only effectively prevent the conductive member from being inserted upside down, but also improve the internal space utilization of the battery.

Description

Technical Field

[0001] This application relates to a battery and electrical equipment, belonging to the field of new energy electrical equipment technology. Background Technology

[0002] A battery is a device that converts chemical energy into electrical energy. It is widely used in daily life, and with the development of the battery industry, the requirements for battery performance are becoming increasingly stringent.

[0003] In conceiving and implementing this application, the applicant discovered at least the following problems: the tabs and terminals in the battery are welded together to achieve circuit connection and then housed inside the battery casing, but during use, the base of the tabs is easily inserted upside down inside the battery casing, causing a short circuit.

[0004] The preceding description is intended to provide general background information and does not necessarily constitute prior art. Utility Model Content

[0005] This application provides a battery and electrical device that can not only effectively prevent the conductive parts from being inserted upside down, but also improve the internal space utilization of the battery.

[0006] This application provides a battery, the battery comprising:

[0007] The housing has a receiving cavity, and a mounting hole is provided on the housing, which is connected to the receiving cavity;

[0008] The electrode assembly includes an electrode body and a mounting component. The electrode body is disposed on the mounting component, and the mounting component is installed in the housing through mounting holes.

[0009] The battery cell assembly is located in the receiving cavity. The battery cell assembly includes a battery cell body and a conductive element. One end of the conductive element is electrically connected to the battery cell body, and the other end of the conductive element is electrically connected to the electrode body. The conductive element is bent and forms at least two bending grooves.

[0010] Along the height direction of the battery, the bending groove away from the terminal has a height H between its end in the bending direction and the upper surface of the cell body, and the height H satisfies: 0.1mm≤H≤0.7mm.

[0011] In addition, this application also provides an electrical device including the battery described above.

[0012] The beneficial effects of this application are: by setting up the cell assembly and the terminal assembly, wherein the conductive parts are bent and form bending grooves, by limiting the height of the bending grooves away from the terminal, not only can the root of the conductive parts be effectively prevented from being inserted upside down, but the space utilization rate inside the battery can also be improved. Attached Figure Description

[0013] The above and other objects, features, and advantages of embodiments of this application will become more readily understood through the following detailed description with reference to the accompanying drawings. In the drawings, several embodiments of this application will be described by way of example and non-limitation, wherein:

[0014] Figure 1 This is a schematic diagram of the battery structure according to an embodiment of this application;

[0015] Figure 2 This is a cross-sectional view of the battery from a first perspective according to an embodiment of this application;

[0016] Figure 3 for Figure 2 A magnified view of a portion of point I in the middle;

[0017] Figure 4 This is a partial explosion diagram of the battery from a second perspective according to an embodiment of this application;

[0018] Figure 5 This is a second-view exploded view of the battery according to an embodiment of this application;

[0019] Figure 6 for Figure 5 A magnified view of a section at point II;

[0020] Figure 7 This is a third-view exploded view of the battery according to an embodiment of this application;

[0021] Figure 8 for Figure 7 A magnified view of a portion of point III;

[0022] Figure 9 This is a schematic diagram of the structure of the electrode sheet in the battery according to an embodiment of this application;

[0023] Figure 10 This is a schematic diagram of the structure of the electrode in a battery according to another embodiment of this application.

[0024] Figure label:

[0025] 100-battery;

[0026] 110 - Casing;

[0027] 111 - Mounting hole;

[0028] 120-Pole Module;

[0029] 121-Pole body;

[0030] 122 - Installation components;

[0031] 130 - Battery cell assembly;

[0032] 131 - Cell body;

[0033] 132 - Conductive component;

[0034] 1321 - First connecting part;

[0035] 1322 - Second connecting part;

[0036] 1323 - Root;

[0037] 1324 - Bending section;

[0038] 133-Positive electrode plate;

[0039] 1331 - Positive electrode ear;

[0040] 1332 - Blank area;

[0041] 134 - Negative electrode plate;

[0042] 1341 - Negative electrode ear;

[0043] 140-bend groove;

[0044] 141 - First bend groove;

[0045] 142 - Second bend groove;

[0046] 150 - Insulating bracket;

[0047] 160 - Insulating separator;

[0048] 170 - Insulating film. Detailed Implementation

[0049] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application. All other obtained embodiments are within the scope of protection of this application. In the absence of conflict, the following embodiments and features can be combined with each other.

[0050] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0051] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0052] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0053] In conceiving and implementing this application, the applicant discovered at least the following problems: the tabs and terminals in the battery are welded together to achieve circuit connection and then housed inside the battery casing, but during use, the tabs inside the battery casing are prone to being inserted upside down, causing a short circuit.

[0054] The battery proposed in this application, through the arrangement of cell assembly and terminal assembly, wherein the conductive component is bent and forms a bending groove, by limiting the height of the bending groove, not only can the root of the conductive component be effectively prevented from being inserted upside down, but the internal space utilization of the battery can also be improved.

[0055] The battery provided in this application will be described in detail below with reference to specific embodiments.

[0056] Figure 1This is a schematic diagram of the battery structure according to an embodiment of this application. Figure 2 This is a cross-sectional view of the battery from a first perspective according to an embodiment of this application. Figure 3 for Figure 2 A magnified view of a portion of point I in the middle. Figure 4 This is a partial explosion diagram of the battery from a second perspective according to an embodiment of this application.

[0057] like Figures 1 to 4 As shown, this application embodiment proposes a battery 100, comprising:

[0058] The housing 110 has a receiving cavity, and a mounting hole 111 is provided on the housing 110, which is connected to the receiving cavity;

[0059] The electrode assembly 120 includes an electrode body 121 and a mounting member 122. The electrode body 121 is disposed on the mounting member 122, and the mounting member 122 is mounted on the housing 110 through the mounting hole 111.

[0060] The battery cell assembly 130 is located in the receiving cavity. The battery cell assembly 130 includes a battery cell body 131 and a conductive element 132. One end of the conductive element 132 is electrically connected to the battery cell body 131, and the other end of the conductive element 132 is electrically connected to the electrode body 121. The conductive element 132 is bent and forms at least two bending grooves 140.

[0061] Along the height direction of the battery 100, the bending groove 140 away from the terminal has a height H between its end in the bending direction and the upper surface of the cell body 131, and the height H satisfies: 0.1mm≤H≤0.7mm.

[0062] In some examples, the housing 110 can be a rectangular structure, and the size of the housing 110 can be greater than or equal to the size of the cell assembly 130, so that the housing 110 can support the cell assembly 130.

[0063] It is understandable that the purpose of the receiving cavity is to house the battery cell assembly 130. It is easy to understand that the receiving cavity is sealed to prevent side reactions from occurring inside the battery cell assembly 130, which could affect the performance of the battery cell assembly 130.

[0064] For example, the size or shape of the receiving cavity is matched with the size and shape of the battery cell assembly 130. Specifically, it can be adjusted according to the actual situation. This application embodiment does not impose too many limitations here.

[0065] In this embodiment, the battery cell assembly 130 can be configured as a rectangular structure. The battery cell assembly 130 can be located inside the housing 110.

[0066] Understandably, the housing 110 can be used to support the cell assembly 130.

[0067] The dimensions of the aforementioned housing 110 can be set according to actual needs, and this embodiment of the application does not impose any restrictions on them.

[0068] In addition, it should be noted that the shape of the housing 110 is not limited in this embodiment. For example, the housing 110 can be a regular shape such as a cuboid or a cylinder. Of course, the housing 110 can also be other irregular shapes.

[0069] In some embodiments, the housing 110 protects the battery cell assembly 130 therein. The housing 110 may be composed of two parts joined together for easy installation. The housing 110 may be a metal shell. Specifically, the material of the housing 110 may be stainless steel, which is sturdy and corrosion-resistant. Of course, the housing 110 may also be made of other materials, and this embodiment does not impose any specific limitations on this.

[0070] In some embodiments, two mounting holes 111 are provided on the top of the housing 110, and the two mounting holes 111 are matched with two pole post assemblies 120.

[0071] It should be noted that the battery 100 also includes a terminal assembly 120, which includes a terminal body 121 and a mounting component 122. The terminal body 121 can be mounted on the mounting component 122, for example, by welding or bolting.

[0072] The electrode body 121 is electrically connected to the conductive element 132 of the battery cell assembly 130. The main function of the electrode body 121 is to conduct the electrical charge on the battery cell assembly 130 to the outside of the housing 110 for easy use.

[0073] In some embodiments, the electrode body 121 is generally made of a material with good electrical conductivity, such as copper or aluminum.

[0074] It should be noted that X represents the length direction of battery 100, Y represents the width direction of battery 100, and Z represents the height direction of battery 100.

[0075] Along the length direction X of the battery 100, there are two terminal post assemblies 120, which are spaced apart on the housing 110. The terminal post body 121 in one of the terminal post assemblies 120 is the positive terminal post, and the terminal post body 121 in the other terminal post assembly 120 is the negative terminal post.

[0076] It should be noted that the conductive component 132 is bent. On the one hand, the conductive component 132 can play a better buffering role. When the battery cell assembly 130 is used in a vibration environment, it can absorb vibration and improve the reliability of the battery cell assembly 130. On the other hand, the two bending grooves 140 make the conductive component 132 bend regularly. The bent part is not easy to be reversed due to redundancy, thereby reducing the risk of short circuit in the battery cell assembly 130 and further improving the reliability of the battery cell assembly 130.

[0077] Furthermore, the bending groove 140, located away from the terminal post, has a height H. By setting an appropriate height H, the root of the conductive component 132 can be effectively prevented from being inserted upside down. This design ensures the stability of the conductive component 132 inside the battery 100, reduces the risk of short circuits that may result from upside-down insertion, and thus improves the safety and reliability of the battery 100.

[0078] For example, the height H can be 0.1mm, 0.2mm, 0.3mm, 0.4mm, 0.5mm, 0.6mm, 0.7mm or any of these values.

[0079] If the height H is too large, it may lead to inefficient use of the internal space of the battery 100. By optimizing the height H, the internal space utilization of the battery 100 can be maximized while ensuring safety. This helps to improve the energy density of the battery 100, enabling it to store more energy in the same volume.

[0080] With the above-mentioned configuration, namely the configuration of the cell assembly 130 and the terminal assembly 120, wherein the conductive element 132 is bent and forms a bending groove 140, by limiting the height of the bending groove 140, not only can the root of the conductive element 132 be effectively prevented from being inserted upside down, but the space utilization rate inside the battery 100 can also be improved. Figure 5 This is a second-view exploded view of the battery according to an embodiment of this application. Figure 6 for Figure 5 A magnified view of a portion of section II. Figure 7 This is a third-view exploded view of the battery according to an embodiment of this application. Figure 8 for Figure 7 A magnified view of a portion of point III.

[0081] like Figures 1 to 7 As shown, in some embodiments, an insulating film 170 is provided on the outside of the cell assembly 130.

[0082] For example, the insulating film 170 may consist of a nylon layer, an aluminum foil layer, a heat-sealing layer, and an adhesive for bonding. The innermost heat-sealing layer may be made of polypropylene, which serves as a sealing and bonding agent. Polypropylene has good heat-sealing adhesion to metals Ni and Al and electrode tabs, and has electrolyte resistance, insulation, and puncture resistance. The middle layer may be made of aluminum foil, specifically pure aluminum or an aluminum-iron alloy, which can react with oxygen in the air at room temperature to form an oxide film, preventing oxygen and moisture from entering and thus protecting the internal battery cell assembly 130. The outermost layer may be made of nylon, which has good impact resistance, puncture resistance, heat resistance, insulation, and abrasion resistance. It is used to protect the aluminum foil layer from scratches and to reduce the impact and vibration caused to the battery 100 by drops, thereby protecting the internal components. It should be noted that connecting the cell body 131 and the terminal body 121 through the conductive component 132 can achieve efficient current transmission, which helps to reduce resistance, improve the overall energy efficiency of the battery 100, and simplify the assembly process of the battery 100.

[0083] Furthermore, the bending design of the conductive element 132 allows for flexible connection between the cell assembly 130 and the terminal assembly 120, adapting to different battery 100 structural designs and providing greater design freedom. The bending structure of the conductive element 132 also buffers deformation caused by thermal expansion or mechanical stress.

[0084] Figure 9 This is a schematic diagram of the structure of the electrode in the battery according to an embodiment of this application. Figure 10 This is a schematic diagram of the structure of the electrode in a battery according to another embodiment of this application.

[0085] like Figures 9 to 10 As shown, it should be noted that the cell body 131 is the smallest charging and discharging unit. The cell body 131 has a positive electrode 133, a negative electrode 134 and a separator disposed between the two, and is formed by winding or stacking.

[0086] The positive electrode sheet 133 includes a positive electrode current collector and a positive electrode active material layer. The positive electrode current collector can be made of metal materials such as aluminum foil, nickel foil, and stainless steel, or a composite foil material formed by combining metal and insulating materials. The positive electrode active material includes a positive electrode active main material, a conductive agent, a binder, etc. The positive electrode active main material includes one or more of lithium-containing positive electrode active materials such as lithium iron phosphate, ternary materials containing nickel, cobalt, and manganese, and lithium manganese iron phosphate.

[0087] Similarly, the negative electrode sheet 134 includes a negative electrode current collector and a negative electrode active material layer. The negative electrode current collector can be made of metal materials such as copper foil, aluminum foil, and stainless steel, or it can be a composite foil material formed by combining metal and insulating materials. The negative electrode active material includes a negative electrode active main material, conductive agent, binder, etc. The negative electrode active main material includes one or more of the following: artificial graphite, natural graphite, silicon carbide, silicon oxide, lithium titanate, etc.

[0088] The tab serves as the current output terminal of the battery cell. The tab and the positive electrode 133 or the negative electrode 134 are either integrally connected or separately connected. Specifically, the positive tab 1331 is integrally connected or separately connected to the positive electrode 133, and the negative tab 1341 is integrally connected or separately connected to the negative electrode 134.

[0089] A separator is disposed between the positive electrode 133 and the negative electrode 134 to separate the positive electrode 133 and the negative electrode 134 and prevent them from short-circuiting due to contact. The root 1323 of the tab is the edge of the active material coating area of ​​the electrode.

[0090] Among them, such as Figure 9 As shown, the height of the negative electrode 134 is higher than the height of the positive electrode 133. The positive active material layer coated on the positive electrode 133 is relatively lower, forming a blank area 1332. The height of the separator is higher than the height of the negative electrode 134. The upper surface of the cell body 131 mentioned above in this application can be the upper surface of the separator, or it can be the upper surface of the negative active material layer or the positive active material layer.

[0091] In some alternative embodiments, the height H is the distance between the end of the bending groove 140 in the bending direction and the upper surface of the active material layer of the cell body 131, and the height H satisfies: 0.15mm≤H≤0.7mm. Thus, by limiting the height H1, the problem of the conductive element 132 being inserted upside down at the root can be effectively prevented.

[0092] The upper surface of the active material layer can be either the upper surface of the negative electrode active material layer or the upper surface of the positive electrode active material layer. In some optional embodiments, the cell assembly 130 further includes at least two tabs, which are disposed on one side of the cell body 131 and have multiple layers of tabs stacked together.

[0093] The conductive element 132 is a tab.

[0094] It should be noted that by using multi-layered tabs as conductive components 132, the current transmission performance and mechanical stability of the battery 100 can be significantly improved.

[0095] Furthermore, the multi-layered tab arrangement allows the tabs to carry a larger current, improving the current carrying capacity of the battery 100 and thus enhancing its power output and efficiency. In addition, it effectively reduces resistance, helping to minimize energy loss and improve the overall energy efficiency of the battery 100.

[0096] In some alternative embodiments, the tabs are provided with an insulating layer on the surface near the cell body 131.

[0097] In some embodiments, the insulating layer may be a coating.

[0098] For example, the coating can be a polyurethane coating, which has good electrical insulation properties and abrasion resistance. It can also be an epoxy resin coating, which provides high strength and heat resistance; or an acrylic coating, which provides good electrical insulation properties and weather resistance.

[0099] In other embodiments, the insulating layer may be an insulating tape. Exemplarily, the insulating tape may be a polyimide tape, which is heat-resistant and has excellent electrical insulation properties; or it may be a polyester tape, which has good mechanical strength and electrical insulation properties.

[0100] In some alternative embodiments, at least two bending grooves 140 include a first bending groove 141 and a second bending groove 142;

[0101] The first bending groove 141 and the second bending groove 142 are arranged at intervals along the height direction of the battery 100. The first bending groove 141 is located close to the terminal post, and the second bending groove 142 is located away from the terminal post. The opening of the first bending groove 141 and the opening of the second bending groove 142 are different.

[0102] It should be noted that by setting bending grooves 140 in different directions, conductive element 132 can more effectively disperse and buffer deformation caused by thermal expansion or mechanical stress, which helps to reduce the direct stress impact on the cell body 131 and the terminal post, and improve the durability and reliability of battery 100.

[0103] Furthermore, the bends 140 with different orientations provide additional mechanical stability, better resisting damage caused by vibration or mechanical impact, and enhancing the overall structural strength of the battery 100. Through specific bending designs, the current transmission path can be optimized, resistance reduced, and the electrical performance of the battery 100 improved.

[0104] Furthermore, the spaced-out bends 140 design optimizes the utilization of internal space while ensuring battery performance.

[0105] Along the height direction of the battery 100, the first bending groove 141 is located above the second bending groove 142.

[0106] In some embodiments, the conductive element 132 is bent to form at least two bending grooves 140, the openings of the two bending grooves 140 facing different directions.

[0107] For example, the openings of the two bending grooves 140 are arranged in opposite directions, that is, the openings of the two bending grooves 140 are arranged at 180 degrees; another example is that the openings of the two bending grooves 140 are arranged at an obtuse angle, so that the conductive component 132 can present a serpentine shape of reciprocating bending.

[0108] like Figure 3 As shown, in some optional embodiments, the conductive element 132 includes a root portion 1323, a first connecting portion 1321, a bent portion 1324 and a second connecting portion 1322 connected in sequence.

[0109] The root portion 1323 is electrically connected to the cell body 131, and the second connection portion 1322 is electrically connected to the electrode body 121.

[0110] It should be noted that the root 1323 is electrically connected to the cell body 131, and the second connection part 1322 is electrically connected to the terminal body 121, which ensures efficient current transmission. The current can flow smoothly between the cell and the terminal, reducing energy loss and improving the overall energy efficiency of the battery 100.

[0111] The first connecting part 1321 and the second connecting part 1322 provide flexible connection options, enabling the conductive element 132 to adapt to different battery 100 design and assembly requirements.

[0112] Furthermore, the first connecting portion 1321 and the second connecting portion 1322 are connected by a bending portion 1324, and the first connecting portion 1321 and the second connecting portion 1322 extend in different directions.

[0113] In some embodiments, the first connecting portion 1321, the bending portion 1324, and the second connecting portion 1322 form a first bending groove 141, and the first connecting portion 1321, the root portion 1323, and the top side of the cell body 131 form a second bending groove 142.

[0114] like Figure 3 As shown, specifically, the first connecting portion 1321 and the second connecting portion 1322 are arranged at an angle to each other in opposite directions, the opening of the first bending groove 141 faces to the right, the opening of the second bending groove 142 faces to the left, the first bending groove 141 and the second bending groove 142 are arranged at 180 degrees, or the opening of the first bending groove 141 and the opening of the second bending groove 142 are arranged at an obtuse angle, so that the conductive component 132 is arranged in an approximate "S" shape.

[0115] In some alternative embodiments, the root 1323 is located at the middle of the cell assembly 130 along the width direction of the battery 100.

[0116] It should be noted that the root 1323 being located in the middle makes the battery 100 structure more symmetrical, which helps to improve the mechanical stability of the battery 100 and reduce deformation or damage caused by unbalanced stress. In addition, satisfying the assembly connection between the terminal assembly 120 and the cell assembly 130 can optimize the internal space utilization of the battery 100 and ensure the best electrical performance within a limited space.

[0117] Furthermore, placing the root 1323 in the middle of the cell assembly 130 helps to achieve a uniform current distribution. This uniformity can reduce the non-uniformity of current density, thereby reducing the risk of local overheating and improving the overall performance and safety of the battery 100.

[0118] Furthermore, the root 1323 design in the middle position reduces the length of the current path, thereby lowering resistance. This optimization helps improve the energy efficiency and power output of the battery 100.

[0119] This allows the root 1323 and the bend 1324 to be arranged in the width direction of the pole post, so that the conductive element 132 can be arranged in an approximate "S" shape, thereby meeting the design requirements.

[0120] For example, the root portion 1323 is centered in the width direction of the pole body 121, and the bent portion 1324 can be positioned slightly to the left of the center in the width direction relative to the pole body 121. In addition, the opening of the second bending groove 142 defined by the root portion 1323 and the first connecting portion 1321 faces to the left, and the opening of the first bending groove 141 defined by the first connecting portion 1321, the bent portion 1324 and the second connecting portion 1322 faces to the right, so that the conductive element 132 is arranged in a roughly "S" shape.

[0121] In some alternative embodiments, the multi-layer tabs located at the tail of the second connection portion 1322 are flush with each other along the height direction of the battery 100.

[0122] It should be noted that by flush-setting the multi-layer tabs at the second connection 1322, the reverse insertion of the tabs can be effectively prevented, ensuring the stability of the conductive component 132 inside the battery 100, reducing the risk of short circuits that may be caused by reverse insertion, and improving the safety and reliability of the battery 100.

[0123] In addition, the flush design simplifies the assembly process of battery 100, reduces assembly errors, and improves production efficiency; it also makes better use of the internal space of battery 100, ensuring optimal electrical performance within a limited space.

[0124] In some alternative embodiments, the multi-layer tabs located at the tail of the second connection portion 1322 are staggered along the height direction of the battery 100.

[0125] It should be noted that the staggered tab layer provides a larger contact area and better welding conditions, which helps to improve the welding quality between the tab layer and the pole body 121 and ensure a firm electrical connection.

[0126] By using a staggered layer design, the alignment requirements during the welding process are reduced, thus simplifying the welding process. This design can improve production efficiency and lower manufacturing costs.

[0127] In some alternative embodiments, the battery 100 also includes an insulating support 150 located between the housing 110 and the cell body 131 along the height direction of the battery 100.

[0128] It should be noted that the insulating bracket 150 provides effective electrical isolation between the housing 110 and the cell body 131, preventing the risk of short circuit between the cell and the housing 110 and improving the safety and reliability of the battery 100.

[0129] In addition, the insulating bracket 150 provides additional mechanical support to help fix the position of the cell body 131, which helps to improve the overall structural stability of the battery 100 and reduce damage caused by vibration or mechanical impact.

[0130] Furthermore, the insulating support 150 can serve as a buffer layer between the battery cell and the housing 110 to prevent the battery cell from being physically damaged during assembly or use.

[0131] In some embodiments, the battery 100 further includes an insulating separator 160 disposed on the insulating spacer and having a slot into which a conductive element 132 is inserted for electrical connection with the terminal body 121.

[0132] In some alternative embodiments, along the width direction of the battery 100, the first connecting portion 1321 has a length L1, wherein the length L1 satisfies: 4.5mm ≤ L1 ≤ 8.5mm; and / or,

[0133] Along the width direction of the battery 100, the second connecting part 1322 has a length L2, which satisfies: 5mm≤L2≤8.5mm.

[0134] It should be noted that appropriate lengths L1 and L2 provide sufficient mechanical strength to ensure the connection remains stable during battery 100 operation; in addition, resistance can be effectively controlled to ensure efficient current transmission.

[0135] Given the limited internal space of the battery 100, the optimized design of length L1 ensures that space utilization is maximized without affecting performance.

[0136] Furthermore, the appropriate length L2 provides sufficient surface area, which helps improve the welding quality with the electrode body 121, ensuring the electrical stability and long-term performance of the battery 100. Given the limited internal space of the battery 100, the optimized design of the length L2 ensures maximum space utilization without compromising performance.

[0137] For example, the length L1 can be 4.5mm, 5mm, 5.5mm, 6mm, 6.5mm, 7mm, 7.5mm, 8mm, 8.5mm or any of these values.

[0138] For example, the length L2 can be 5mm, 5.5mm, 6mm, 6.5mm, 7mm, 7.5mm, 8mm, 8.5mm or any of these values.

[0139] The battery provided in this application embodiment includes: a casing having a receiving cavity, with a mounting hole on the casing communicating with the receiving cavity; a terminal assembly including a terminal body and a mounting member, the terminal body being disposed on the mounting member, and the mounting member being mounted on the casing through the mounting hole; and a cell assembly located within the receiving cavity, the cell assembly including a cell body and a conductive member, one end of the conductive member being electrically connected to the cell body, and the other end of the conductive member being electrically connected to the terminal body, the conductive member being bent and forming at least two bending grooves; along the height direction of the battery, the bending groove away from the terminal has a height H between its end in the bending direction and the upper surface of the cell body, the height H satisfying: 0.1mm≤H≤0.7mm.

[0140] By setting up the cell assembly and terminal assembly, the conductive parts are bent and form bending grooves. By limiting the height of the bending grooves, not only can the roots of the conductive parts be effectively prevented from being inserted upside down, but the internal space utilization of the battery can also be improved.

[0141] In addition, this application embodiment also provides an electrical device, including the battery 100 described above;

[0142] It should be noted that the specific structure of battery 100 will not be discussed in detail here; please refer to the above.

[0143] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0144] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0145] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A battery (100) characterized in that, include: The housing (110) has a receiving cavity, and the housing (110) has a mounting hole (111) that communicates with the receiving cavity; The pole assembly (120) includes a pole body (121) and a mounting member (122). The pole body (121) is disposed on the mounting member (122), and the mounting member (122) is mounted on the housing (110) through the mounting hole (111). A battery cell assembly (130) is located within the receiving cavity. The battery cell assembly (130) includes a battery cell body (131) and a conductive element (132). One end of the conductive element (132) is electrically connected to the battery cell body (131), and the other end of the conductive element (132) is electrically connected to the terminal body (121). The conductive element (132) is bent and forms at least two bending grooves (140). Along the height direction of the battery (100), the bending groove (140) away from the pole has a height H between its end in the bending direction and the upper surface of the cell body (131), the height H satisfying: 0.1mm≤H≤0.7mm.

2. The battery (100) according to claim 1, characterized in that The height H is the distance between the end of the bending groove (140) in the bending direction and the upper surface of the active material layer of the cell body (131), and the height H satisfies: 0.15mm≤H≤0.7mm.

3. The battery (100) according to claim 1, characterized in that The battery cell assembly (130) further includes at least two tabs, which are disposed on one side of the battery cell body (131) and have multiple layers of tabs stacked together. The conductive element (132) is the electrode tab.

4. The battery (100) according to claim 3, characterized in that The electrode tab has an insulating layer on its surface near the battery cell body (131).

5. The battery (100) according to claim 3 or 4, characterized in that At least two bending grooves (140) include a first bending groove (141) and a second bending groove (142); The first bending groove (141) and the second bending groove (142) are spaced apart along the height direction of the battery (100). The first bending groove (141) is located close to the electrode post, and the second bending groove (142) is located away from the electrode post. The groove openings of the first bending groove (141) and the second bending groove (142) are different.

6. The battery (100) according to claim 5, characterized in that The conductive element (132) includes a root portion (1323), a first connecting portion (1321), a bending portion (1324), and a second connecting portion (1322) connected in sequence; The root (1323) is electrically connected to the cell body (131), and the second connection part (1322) is electrically connected to the pole body (121).

7. The battery (100) according to claim 6, characterized in that Along the width direction of the battery (100), the root (1323) is located in the middle of the cell assembly (130).

8. The battery (100) according to claim 6, characterized in that Along the height direction of the battery (100), the multiple layers of tabs located at the tail of the second connection portion (1322) are flush with each other; or, Along the height direction of the battery (100), the multiple layers of tabs located at the tail of the second connection portion (1322) are staggered.

9. The battery (100) according to claim 6, characterized in that The battery (100) also includes an insulating support (150) located between the housing (110) and the cell body (131) along the height direction of the battery (100).

10. The battery (100) of claim 6, wherein, Along the width direction of the battery (100), the first connecting portion (1321) has a length L1, which satisfies: 4.5mm ≤ L1 ≤ 8.5mm; and / or, Along the width direction of the battery (100), the second connecting portion (1322) has a length L2, which satisfies: 5mm≤L2≤8.5mm.

11. An electrical device, characterized by Includes the battery (100) as described in any one of claims 1 to 10.

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