Battery case, battery, electric device, method and apparatus for manufacturing battery

Abstract

The application provides a battery box, a battery, a power utilization device, a battery preparation method and device, and can improve the installation stability of the battery in the power utilization device. The battery box (100) comprises a first part box (110) provided with a first hole (111), an installation structure (130) located in the box (100) and corresponding to the first hole (111), and the installation structure (130) is used for installing the box (100) to the power utilization device through the first hole (111); wherein the edge of the first hole (111) is provided with a rigid structure (140), which abuts with the installation structure (130) to prevent the installation structure (140) from contacting the first part box (110). Through the scheme, the rigid structure can reduce the probability of the installation structure causing wear to the first part box, improve the rigidity and strength of the first part box, reduce the probability of the movement of the power utilization device such as a vehicle affecting the first part box, and improve the installation stability of the box and the battery in the power utilization device.

Description

Technical Field

[0001] This application relates to the field of batteries, and more specifically, to a battery housing, a battery, an electrical device, a method and apparatus for manufacturing a battery. Background Technology

[0002] Energy conservation and emission reduction are key to the sustainable development of the automotive industry. In this context, electric vehicles, due to their energy-saving and environmentally friendly advantages, have become an important component of the automotive industry's sustainable development. And for electric vehicles, battery technology is a crucial factor in their development.

[0003] When batteries are installed in electrical devices, such as electric vehicles, the movement of the vehicle causes the battery to shake. Excessive shaking can adversely affect battery performance. Therefore, improving the stability of batteries fixed in electrical devices is a pressing technical problem that needs to be solved in battery technology. Summary of the Invention

[0004] This application provides a battery housing, a battery, an electrical device, a method and apparatus for manufacturing a battery, which can improve the installation stability of the battery in the electrical device.

[0005] In a first aspect, a battery casing is provided, comprising: a first portion of the casing having a first hole; and a mounting structure located within the casing and corresponding to the first hole, the mounting structure being used to mount the casing to an electrical device through the first hole; wherein a rigid structure is provided at the edge of the first hole, the rigid structure abutting against the mounting structure to prevent the mounting structure from contacting the first portion of the casing.

[0006] According to the technical solution of this application embodiment, the housing is provided with a mounting structure, which corresponds to the first hole in the first part of the housing, and the housing can be installed to the electrical device through the first hole. Furthermore, a rigid structure is provided at the edge of the first hole, which abuts against the mounting structure. This reduces the probability of wear caused by the mounting structure to the portion of the first housing located at the edge of the first hole, thereby reducing the probability of decreased rigidity and strength of the first housing due to wear. By improving the rigidity and strength of the first housing, the probability of the movement of electrical devices such as vehicles affecting the first housing can be reduced, thereby improving the installation stability of the housing and battery within the electrical device. This is beneficial for improving the safety and overall performance of the battery, facilitating the promotion and use of the battery in electrical devices.

[0007] In some possible implementations, the rigid structural member and the first part of the housing abut against each other through a first seal to ensure the airtightness between the rigid structural member and the first part of the housing.

[0008] With the technical solution of this embodiment, the first sealing member abuts between the rigid structural member and the first part of the box to ensure the sealing between the rigid structural member and the first part of the box, thereby improving the overall sealing of the box and improving the safety performance of electrical components such as battery cells inside the box.

[0009] In some possible implementations, the rigid structural member and the mounting structural member abut against each other through a second seal to ensure a tight seal between the rigid structural member and the mounting structural member.

[0010] With the technical solution of this embodiment, the second sealing member abuts between the rigid structural member and the mounting structural member to ensure the sealing between the rigid structural member and the mounting structural member, thereby improving the overall sealing of the box and enhancing the safety performance of electrical components such as battery cells inside the box.

[0011] In some possible implementations, the housing further includes a fastener located outside the housing and connected to the mounting structure via a first hole, the fastener being used to secure the first portion of the housing and the rigid structure to the mounting structure.

[0012] By using the technical solution of this embodiment, the first part of the box and the rigid structural component are fixed to the mounting structure using fasteners, which can achieve a reliable and firm connection between the first part of the box, the rigid structural component and the mounting structure, thereby further improving the installation stability of the box and the battery in the electrical device.

[0013] In some possible implementations, the rigid structural member abuts against the fastener to prevent the fastener from contacting the first part of the housing.

[0014] Through the technical solution of this embodiment, the rigid structural component not only abuts against the mounting structural component, but also abuts against the fixing component to prevent the fixing component from contacting the first part of the housing, thereby reducing the probability of the fixing component causing wear to the first part of the housing, further improving the rigidity and strength of the first part of the housing, and improving the installation stability of the housing and battery in the electrical device.

[0015] In some possible implementations, a rigid structural member covers the sidewall of the first hole, and a first portion of the housing is located at the edge of the first hole and faces the interior and exterior surfaces of the housing.

[0016] Through the technical solution of this embodiment, the rigid structural component not only reduces the probability of wear caused to the first part of the housing by the mounting structural components and fasteners located on the inner and outer surfaces of the first part of the housing, thus improving the rigidity and strength of the first part of the housing, but also covers the sidewall of the first hole. That is, it is positioned between the fasteners and the mounting structural components, providing a rigid connection between them and bearing the tightening force, preventing loosening. The rigid structural component in this embodiment makes the connection between the first part of the housing, the rigid structural component, and the mounting structural components more stable, thereby improving the installation stability of the housing when mounted on the electrical device via the mounting structural components.

[0017] In some possible implementations, the rigid structural component includes a first rigid sleeve and a second rigid sleeve. The first rigid sleeve includes a first tubular structure and a first flange structure. The first tubular structure is located on the sidewall of the first hole, and the first flange structure covers the surface of the first portion of the housing located at the edge of the first hole and facing the inside of the housing. The second rigid sleeve includes a second tubular structure and a second flange structure. The second tubular structure is located on the sidewall of the first hole and is connected to the first tubular structure. The second flange structure covers the surface of the first portion of the housing located at the edge of the first hole and facing the outside of the housing.

[0018] According to the technical solution of this embodiment, the rigid structural member can be composed of two rigid sleeves, which are configured to be connected to each other, thereby facilitating the installation of the rigid structural member at the edge of the first hole in the first part of the box.

[0019] In some possible implementations, the second tubular structure covers at least a portion of the sidewall of the first hole, and the first tubular structure covers at least a portion of the second tubular structure.

[0020] By means of the technical solution of this embodiment, based on the mutual connection and arrangement of the first tubular structure and the second tubular structure on the sidewall of the first hole, compared with the second tubular structure, the first tubular structure is located further away from the sidewall of the first hole, and the first flange structure connected to the first tubular structure has a longer radial length, thereby increasing the area of ​​the first flange structure and the contact area between the first flange structure and the mounting structure, thus improving the connection reliability between the first rigid sleeve and the mounting structure. Furthermore, in this embodiment, the second sealing element can be conveniently arranged between the first flange structure and the mounting structure, which also increases the contact area between the second sealing element and the first flange structure and the mounting structure, thereby improving the sealing performance of the second sealing element between the first flange structure and the mounting structure. Moreover, in this embodiment, the first rigid sleeve can be first placed in the first hole, wherein the first tubular structure can cover at least part of the sidewall of the first hole, and then the second rigid sleeve is connected to the first rigid sleeve. The installation process between the two is relatively simple and can fit well with the first hole.

[0021] In some possible implementations, the first tubular structure and the second tubular structure are connected to each other by threaded connection.

[0022] The technical solution of this embodiment is simple and easy to implement in terms of connection method between the first tubular structure and the second tubular structure, and can improve the stable and reliable connection between the first rigid sleeve and the second rigid sleeve.

[0023] In some possible implementations, the first flange structure and the first portion of the housing abut against each other by a first seal, the width of which substantially covers the width of the first flange structure, and / or the thickness of the first seal is between 0.2 mm and 0.3 mm.

[0024] With this embodiment, the width of the first seal essentially covers the width of the first flange structure, allowing for greater utilization of the space within the first flange structure to accommodate sufficient first seals, thus achieving a more reliable seal and connection between the first flange structure and the first portion of the housing. Furthermore, the thickness of the first seal can be between 0.2mm and 0.3mm to ensure superior mechanical properties, thereby improving and optimizing the reliable connection between the first rigid sleeve and the first portion of the housing.

[0025] In some possible implementations, the first flange structure is provided with a limiting step for accommodating the first seal.

[0026] The technical solution of this embodiment involves providing a limiting step on the first flange structure of the first rigid sleeve to control the size of the first sealing element accommodated in the limiting step. This embodiment is relatively simple and easy to implement, and it also allows the first sealing element to have good performance, thereby improving the overall manufacturing efficiency and performance of the housing.

[0027] In some possible implementations, the first sealant is structural adhesive.

[0028] With the technical solution of this embodiment, when the first sealant is structural adhesive, the first sealant can not only improve the sealing performance between the first rigid sleeve and the first part of the housing, but also achieve a reliable connection between the first rigid sleeve and the first part of the housing, further improving the overall reliability of the housing. At the same time, the structural adhesive is also easy to apply to the first rigid sleeve or the first part of the housing, and the process is relatively simple, which is conducive to improving the manufacturing efficiency of the housing and the battery.

[0029] In some possible implementations, a filling layer is provided between the second flange structure and the surface of the first portion of the housing located at the edge of the first hole and facing the outside of the housing.

[0030] Through the technical solution of this embodiment, the filling layer can first be used to absorb the manufacturing tolerances of the first rigid sleeve, the second rigid sleeve and the first part of the box, so as to reduce the probability of gaps forming between the first rigid sleeve, the second rigid sleeve and the first part of the box due to the influence of the manufacturing process, thereby improving the overall sealing performance and other related properties of the box.

[0031] In some possible implementations, both the first flange structure and the second flange structure are polygonal in shape.

[0032] Through the technical solution of this embodiment, the first flange structure and the second flange structure of the polygon can provide a locking structure for the installation tool of the first rigid sleeve and the second rigid sleeve, so that the installation tool can be locked onto the first flange structure and the second flange structure, and realize the mutual connection and installation between the first rigid sleeve and the second rigid sleeve.

[0033] In some possible implementations, the shape of the first flange structure differs from that of the second flange structure.

[0034] The technical solution of this embodiment is that the shape of the first flange structure is different from that of the second flange structure, which can play a role in preventing errors. That is, the first rigid sleeve and the second rigid sleeve can be distinguished by the shapes of the first flange structure and the second flange structure, which is conducive to the correct installation of the first rigid sleeve and the second rigid sleeve on the first part of the box.

[0035] In some possible implementations, the first hole is located in the middle region of the first part of the housing.

[0036] In this embodiment, the first hole is located in the central region of the first part of the housing. Correspondingly, in this embodiment, the rigid structural member and the mounting structural member are also located in the central region of the housing. Through the mounting structural member and the rigid structural member located in the central region of the housing, the housing and the battery thereon can be installed on the electrical device in a more balanced and stable manner.

[0037] In some possible implementations, the first part of the housing is made of composite material, and the rigid structural components are made of metal.

[0038] In this embodiment, the first part of the casing is made of composite material, which is lightweight and relatively strong. This ensures the casing has sufficient strength and reliability while reducing its overall weight, facilitating battery installation and replacement within the electrical device. Furthermore, the rigid structural component is made of metal, which offers greater wear resistance and possesses sufficient rigidity and strength compared to the first part of the casing. Therefore, metal is a suitable material for use as a rigid structural component in this embodiment, improving the installation stability of the casing and battery within the electrical device.

[0039] In some possible implementations, the housing further includes a second housing section and a crossbeam, wherein the second housing section and the first housing section are interlocked to form a receiving cavity for accommodating individual battery cells, the crossbeam is disposed in the second housing section, and the mounting structure is disposed on the crossbeam.

[0040] By utilizing the crossbeam in the second part of the housing to install the mounting structure, on the one hand, it does not occupy other space in the housing used to accommodate battery cells, thus increasing the energy density of the battery; on the other hand, the crossbeam has high installation stability in the housing, so setting the mounting structure on the crossbeam can also improve the installation stability of the mounting structure in the housing.

[0041] In a second aspect, a battery is provided, comprising: at least one battery cell, and a housing as described in the first aspect or any possible embodiment of the first aspect, the housing being used to house at least one battery cell.

[0042] Thirdly, an electrical device is provided, comprising: the battery of the second aspect, the battery being used to provide electrical energy to the electrical device.

[0043] Fourthly, a method for manufacturing a battery is provided, comprising: providing at least one battery cell; providing a housing, the housing comprising: a first portion of the housing having a first hole; a mounting structure located within the housing and corresponding to the first hole, the mounting structure being used to mount the housing to an electrical device through the first hole; wherein a rigid structure is provided at the edge of the first hole, the rigid structure abutting against the mounting structure to prevent the mounting structure from contacting the first portion of the housing; and housing at least one battery cell within the housing.

[0044] Fifthly, an apparatus for manufacturing a battery includes: a providing module for providing at least one battery cell and a housing; wherein the housing includes: a first portion of the housing having a first hole; a mounting structure located within the housing and corresponding to the first hole, the mounting structure being used to mount the housing to an electrical device through the first hole; wherein a rigid structure is provided at the edge of the first hole, the rigid structure abutting against the mounting structure to prevent the mounting structure from contacting the first portion of the housing; and a mounting module for accommodating the battery cell within the housing.

[0045] According to the technical solution of this application embodiment, the housing is provided with a mounting structure, which corresponds to the first hole in the first part of the housing, and the housing can be installed to the electrical device through the first hole. Furthermore, a rigid structure is provided at the edge of the first hole, which abuts against the mounting structure. This reduces the probability of wear caused by the mounting structure to the portion of the first housing located at the edge of the first hole, thereby reducing the probability of decreased rigidity and strength of the first housing due to wear. By improving the rigidity and strength of the first housing, the probability of the movement of electrical devices such as vehicles affecting the first housing can be reduced, thereby improving the installation stability of the housing and battery within the electrical device. This is beneficial for improving the safety and overall performance of the battery, facilitating the promotion and use of the battery in electrical devices. Attached Figure Description

[0046] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments of this application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on the drawings without creative effort.

[0047] Figure 1 This is a schematic diagram of the structure of a vehicle disclosed in one embodiment of this application;

[0048] Figure 2 This is a schematic diagram of the structure of a battery disclosed in one embodiment of this application;

[0049] Figure 3This is a schematic diagram of the structure of a battery cell disclosed in an embodiment of this application;

[0050] Figure 4 This is a three-dimensional exploded view of a box disclosed in one embodiment of this application;

[0051] Figure 5 It is along Figure 4 A schematic cross-sectional view along the A-A' direction;

[0052] Figure 6 This is a schematic cross-sectional view of another housing disclosed in one embodiment of this application;

[0053] Figure 7 This is a schematic cross-sectional view of another housing disclosed in one embodiment of this application;

[0054] Figure 8 This is a schematic cross-sectional view of another housing disclosed in one embodiment of this application;

[0055] Figure 9 This is a schematic cross-sectional view of another housing disclosed in one embodiment of this application;

[0056] Figure 10 This is a schematic cross-sectional view of another housing disclosed in one embodiment of this application;

[0057] Figure 11 This is a three-dimensional schematic diagram of the first rigid sleeve and the second rigid sleeve disclosed in an embodiment of this application;

[0058] Figure 12 This is a three-dimensional structural diagram of a box disclosed in one embodiment of this application;

[0059] Figure 13 yes Figure 12 An exploded three-dimensional view of the box in the embodiment shown;

[0060] Figure 14 This is a schematic flowchart of a method for preparing a battery disclosed in an embodiment of this application;

[0061] Figure 15 This is a schematic block diagram of an apparatus for preparing a battery disclosed in an embodiment of this application.

[0062] The accompanying drawings are not drawn to scale. Detailed Implementation

[0063] The embodiments of this application will be described in further detail below with reference to the accompanying drawings and examples. The detailed description of the following embodiments and the accompanying drawings are used to illustrate the principles of this application by way of example, but should not be used to limit the scope of this application, that is, this application is not limited to the described embodiments.

[0064] In the description of this application, it should be noted that, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," and "outer," etc., indicating orientation or positional relationships, 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 on this application. Furthermore, the terms "first," "second," and "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance. "Vertical" is not vertical in the strict sense, but within the allowable tolerance range. "Parallel" is not parallel in the strict sense, but within the allowable tolerance range.

[0065] The directional terms used in the following description refer to the directions shown in the figures and are not intended to limit the specific structure of this application. It should also be noted in the description of this application that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0066] In this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent three possibilities: A exists, A and B exist simultaneously, and B exists. Additionally, in this application, the character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0067] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used in the description of this application is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms "comprising" and "having," and any variations thereof, in the description, claims, and accompanying drawings of this application are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the description, claims, or accompanying drawings of this application are used to distinguish different objects, not to describe a specific order or hierarchy.

[0068] In this application, the reference to "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a mutually exclusive, independent, or alternative embodiment. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described in this application can be combined with other embodiments.

[0069] In this application, a battery refers to a physical module comprising one or more battery cells to provide electrical energy. For example, the battery mentioned in this application may include a battery module or a battery pack. A battery generally includes a casing for encapsulating one or more battery cells. The casing can reduce the probability of liquids or other foreign matter affecting the charging or discharging of the battery cells.

[0070] Optionally, the battery cell 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 this application embodiment is not limited in this regard. The battery cell may be cylindrical, flat, cuboid, or other shapes, etc., and this application embodiment is not limited in this regard either. Battery cells are generally divided into three types according to their packaging method: cylindrical battery cells, cuboid / square battery cells, and pouch battery cells, and this application embodiment is not limited in this regard either.

[0071] A battery cell includes an electrode assembly and an electrolyte. The electrode assembly consists of a positive electrode, a negative electrode, and a separator. The battery cell primarily functions by the movement of metal ions between the positive and negative electrodes. The positive electrode includes a positive current collector and a positive active material layer. The positive active material layer is coated on the surface of the positive current collector, and the uncoated current collector protrudes beyond the coated current collector, serving as the positive electrode tab. Taking a lithium-ion battery as an example, the positive current collector can be made of aluminum, and the positive active material can be lithium cobalt oxide, lithium iron phosphate, ternary lithium, or lithium manganese oxide, etc. The negative electrode includes 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, and the uncoated current collector protrudes beyond the coated current collector, serving as the negative electrode tab. The negative current collector can be made of copper, and the negative active material can be carbon or silicon, etc. To prevent melting when carrying large currents, multiple positive electrode tabs and multiple negative electrode tabs are stacked together. The diaphragm can be made of polypropylene (PP) or polyethylene (PE), etc. Furthermore, the electrode assembly can be a wound structure or a stacked structure; the embodiments of this application are not limited to these.

[0072] The development of battery technology must take into account multiple design factors, such as energy density, cycle life, discharge capacity, charge / discharge rate and other performance parameters. In addition, the safety and stability of the battery also need to be considered.

[0073] When a battery is installed in an electrical device, such as an electric vehicle, the movement of the vehicle or other electrical device will cause a certain impact on the battery. If the battery is not stable, the impact will adversely affect the battery's performance and may cause safety problems.

[0074] As an example, for securing batteries in electric vehicles, in some implementations, locking structures that cooperate with each other can be provided on the battery housing and the frame of the electric vehicle to secure the battery to the frame.

[0075] Alternatively, in other embodiments, a mounting structure can be provided within the battery casing to allow the battery to be mounted on the vehicle frame. Optionally, the mounting structure can be located inside the casing, and space can be reserved inside the mounting structure to facilitate the insertion of structural components such as bolts on the vehicle frame, thereby enabling the battery to be mounted on the vehicle frame.

[0076] In this embodiment, the mounting structure needs to abut against the wall of the box, and a sealed space can be formed between the mounting structure and the box. When structural components such as bolts on the vehicle frame are inserted into the mounting structure, the sealing of the box will not be damaged, thereby improving the safety performance of the battery cells installed inside the box.

[0077] However, during the operation of an electric vehicle, the vibration of structural components such as bolts on the frame causes vibration of the mounting components, resulting in wear on the battery box wall caused by these mounting components that directly abut against the box wall. Over extended periods of vehicle operation, this wear affects both the rigidity and strength of the battery box, thus impacting the battery's mounting stability on the frame. Furthermore, it also affects the box's sealing performance, consequently affecting the safety performance of the individual battery cells inside. Therefore, in this implementation method, the battery box's installation stability and sealing performance within the vehicle are both low, potentially posing certain safety hazards.

[0078] In view of this, this application provides a battery housing, which, in addition to the aforementioned mounting structure for mounting the battery to a vehicle, also includes a rigid structural member. This rigid structural member abuts against the mounting structure, reducing the probability of the mounting structure directly contacting the wall of the housing, thereby reducing the probability of wear caused by the mounting structure on the housing wall. This embodiment improves the stability of the battery fixed to the electrical device.

[0079] The technical solutions described in the embodiments of this application are applicable to various battery-powered devices, such as mobile phones, portable devices, laptops, electric vehicles, electric toys, power tools, electric vehicles, ships, and spacecraft. For example, spacecraft include airplanes, rockets, space shuttles, and spacecraft.

[0080] It should be understood that the technical solutions described in the embodiments of this application are not limited to the devices described above, but can also be applied to all devices that use batteries. However, for the sake of brevity, the following embodiments are all illustrated using electric vehicles as examples.

[0081] For example, such as Figure 1 The diagram shown is a structural schematic of a vehicle 1 according to one embodiment of this application. Vehicle 1 can be a gasoline-powered vehicle, a natural gas-powered vehicle, or a new energy vehicle. New energy vehicles can be pure electric vehicles, hybrid electric vehicles, or range-extended electric vehicles, etc. A motor 11, a controller 12, and a battery 10 can be installed inside vehicle 1. The controller 12 controls the battery 10 to supply power to the motor 11. For example, the battery 10 can be installed at the bottom, front, or rear of vehicle 1. The battery 10 can be used to power vehicle 1; for example, it can serve as the operating power source for the vehicle 1's electrical system, such as meeting the power requirements for starting, navigation, and operation. In another embodiment of this application, the battery 10 can not only serve as the operating power source for vehicle 1 but also as the driving power source, replacing or partially replacing gasoline or natural gas to provide driving power to vehicle 1.

[0082] To meet diverse power demands, a battery can comprise multiple individual cells, which can be connected in series, parallel, or a combination of both. A battery can also be called a battery pack. Optionally, multiple individual cells can first be connected in series, parallel, or a combination of both to form a battery module, and then multiple battery modules can be connected in series, parallel, or a combination of both to form a battery. In other words, multiple individual cells can be directly assembled into a battery, or they can first be assembled into battery modules, and then the battery modules can be assembled into a battery.

[0083] For example, such as Figure 2 The diagram shown is a structural schematic of a battery 10 according to an embodiment of this application. The battery 10 may include multiple battery cells 20. The battery 10 may also include a housing (or cover), the interior of which is a hollow structure, and the multiple battery cells 20 are housed within the housing. Figure 2 As shown, the housing may include two parts, referred to here as the first housing part 110 and the second housing part 120, which are fastened together. The shapes of the first housing part 110 and the second housing part 120 can be determined according to the combined shape of multiple battery cells 20. Both the first housing part 110 and the second housing part 120 may have an opening. For example, both the first housing part 110 and the second housing part 120 can be hollow cuboids with only one open side each. The openings of the first housing part 110 and the second housing part 120 are opposite to each other, and the first housing part 110 and the second housing part 120 are fastened together to form a housing with a closed chamber. Multiple battery cells 20 are connected in parallel, series, or mixed configurations and placed inside the housing formed by the fastening of the first housing part 110 and the second housing part 120.

[0084] Optionally, the battery 10 may also include other structures, which will not be described in detail here. For example, the battery 10 may also include a busbar component for realizing the electrical connection between multiple battery cells 20, such as parallel, series, or mixed connection. Specifically, the busbar component can realize the electrical connection between battery cells 20 by connecting the electrode terminals of the battery cells 20. Further, the busbar component can be fixed to the electrode terminals of the battery cells 20 by welding. The electrical energy of the multiple battery cells 20 can be further led out through the housing by a conductive mechanism. Optionally, the conductive mechanism may also be part of the busbar component.

[0085] The number of battery cells 20 can be set to any value depending on different power requirements. Multiple battery cells 20 can be connected in series, parallel, or mixed to achieve a larger capacity or power. Since each battery 10 may contain a large number of battery cells 20, for ease of installation, the battery cells 20 can be grouped, with each group of battery cells 20 forming a battery module. The number of battery cells 20 in each group is unlimited and can be set according to requirements.

[0086] Figure 3 This is a schematic diagram of the structure of a battery cell 20 according to an embodiment of this application.

[0087] like Figure 3 As shown, the battery cell 20 includes one or more electrode assemblies 22, a housing 211, and a cover plate 212. The walls of the housing 211 and the cover plate 212 are both referred to as the walls of the battery cell 20. The shape of the housing 211 depends on the combined shape of the one or more electrode assemblies 22. For example, the housing 211 can be a hollow cuboid, cube, or cylinder, and one face of the housing 211 has an opening so that one or more electrode assemblies 22 can be placed inside the housing 211. For example, when the housing 211 is a hollow cuboid or cube, one plane of the housing 211 is an open face, meaning that this plane does not have a wall, allowing communication between the inside and outside of the housing 211. When the housing 211 can be a hollow cylinder, the end face of the housing 211 is an open face, meaning that this end face does not have a wall, allowing communication between the inside and outside of the housing 211. The cover plate 212 covers the opening and is connected to the housing 211 to form a closed cavity for placing the electrode assemblies 22. The casing 211 is filled with an electrolyte, such as an electrolyte solution.

[0088] The battery cell 20 may also include two electrode terminals 214, which can be disposed on a cover plate 212. The cover plate 212 is typically flat, and the two electrode terminals 214 are fixed to the flat surface of the cover plate 212. The two electrode terminals 214 are a positive electrode terminal 214a and a negative electrode terminal 214b, respectively. Each electrode terminal 214 is provided with a corresponding connecting member 23, or a current collector 23, which is located between the cover plate 212 and the electrode assembly 22, and is used to electrically connect the electrode assembly 22 and the electrode terminal 214.

[0089] like Figure 3 As shown, each electrode assembly 22 has a first tab 221a and a second tab 222a. The first tab 221a and the second tab 222a have opposite polarities. For example, when the first tab 221a is a positive tab, the second tab 222a is a negative tab. The first tab 221a of one or more electrode assemblies 22 is connected to an electrode terminal via a connecting member 23, and the second tab 222a of one or more electrode assemblies 22 is connected to another electrode terminal via another connecting member 23. For example, the positive electrode terminal 214a is connected to the positive tab via a connecting member 23, and the negative electrode terminal 214b is connected to the negative tab via another connecting member 23.

[0090] In this battery cell 20, depending on actual usage requirements, the electrode assembly 22 can be configured as a single unit or multiple units, such as... Figure 3 As shown, the battery cell 20 contains four independent electrode assemblies 22.

[0091] As an example, a pressure relief mechanism 213 may also be provided on one wall of the battery cell 20. The pressure relief mechanism 213 is actuated to release the internal pressure or temperature when the internal pressure or temperature of the battery cell 20 reaches a threshold.

[0092] Optionally, in one embodiment of this application, the pressure relief mechanism 213 and the electrode terminal 214 are disposed on different walls of the battery cell 20. As an example, such as... Figure 3 As shown, the electrode terminals 214 of the battery cell 20 can be disposed on the top wall of the battery cell 20, i.e., the cover plate 212. The pressure relief mechanism 213 is disposed on another wall of the battery cell 20, different from the top wall; for example, the pressure relief mechanism 213 is disposed on the bottom wall 215 opposite to the top wall. For ease of demonstration, Figure 3 The bottom wall 215 is separated from the housing 211, but this does not limit the bottom side of the housing 211 to have an opening.

[0093] Optionally, in another embodiment of this application, the pressure relief mechanism 213 and the electrode terminal 214 are disposed on the same wall of the battery cell 20. For example, both the electrode terminal 214 and the pressure relief mechanism 213 can be disposed on the top wall of the battery cell 20, i.e., the cover plate 212.

[0094] The aforementioned pressure relief mechanism 213 can be part of the wall it is located on, or it can be a separate structure from the wall it is located on, fixed to the wall by means such as welding. For example, in Figure 3 In the illustrated embodiment, when the pressure relief mechanism 213 is part of the bottom wall 215, the pressure relief mechanism 213 can be formed by setting a groove on the bottom wall 215. The thickness of the bottom wall 215 corresponding to the groove is less than the thickness of the pressure relief mechanism 213 in other areas except for the groove. The groove is the weakest point of the pressure relief mechanism 213. When too much gas is generated by the battery cell 20, causing the internal pressure of the casing 211 to rise and reach a threshold, or when the internal reaction of the battery cell 20 generates heat, causing the internal temperature of the battery cell 20 to rise and reach a threshold, the pressure relief mechanism 213 can rupture at the groove, resulting in communication between the inside and outside of the casing 211. The gas pressure and temperature are released outward through the rupture of the pressure relief mechanism 213, thereby reducing the probability of the battery cell 20 exploding.

[0095] Furthermore, the pressure relief mechanism 213 can be any of the possible pressure relief mechanisms, and this application embodiment is not limited to any particular one. For example, the pressure relief mechanism 213 can be a temperature-sensitive pressure relief mechanism, which is configured to melt when the internal temperature of the battery cell 20 with the pressure relief mechanism 213 reaches a threshold; and / or, the pressure relief mechanism 213 can be a pressure-sensitive pressure relief mechanism, which is configured to rupture when the internal gas pressure of the battery cell 20 with the pressure relief mechanism 213 reaches a threshold.

[0096] The above text combined Figure 3 This application provides a schematic structural diagram of a battery cell 20 according to an embodiment. The following is a description of the structure of the battery cell 20. Figure 4 and Figure 5 This describes the relevant technical solution of a housing 100 provided in the embodiments of this application. Among them, Figure 4 This is a three-dimensional exploded view of a box 100 provided in an embodiment of this application. Figure 5 For along Figure 4 A schematic cross-sectional view along the A-A' direction.

[0097] like Figure 4 and Figure 5 As shown, the enclosure 100 includes: a first enclosure 110 having a first hole 111; and a mounting structure 130 located inside the enclosure 100 and corresponding to the first hole 111, wherein the mounting structure 130 is used to install the enclosure 100 to an electrical device through the first hole 111; wherein a rigid structure 140 is provided on the edge of the first hole 111, and the rigid structure 140 abuts against the mounting structure 130 to prevent the mounting structure 130 from contacting the first enclosure 110.

[0098] Specifically, in this embodiment of the application, the first portion of the housing 110 is a portion of the housing 100. As an example, such as... Figure 4 As shown, the first portion of the housing 110 can be a cover structure, and this first portion of the housing 110 can be one of the walls of the housing 100. Alternatively, in another example, the first portion of the housing 110 can also be... Figure 2 The diagram shows a hollow cuboid structure with an open surface. This application embodiment does not limit the specific shape and size of the first part, the box 110, as long as it can form a three-dimensional structure with a sealed chamber together with other parts of the box 200.

[0099] In addition, a first hole 111 is provided in the first part of the housing 110. The first hole 111 is corresponding to the mounting structure 130 located inside the housing 100, so that the mounting structure 130 can install the housing 100 to the electrical device where the battery 10 is located through the first hole 111.

[0100] Specifically, the electrical device includes a structural component that mates with the mounting structure 130. Either the mounting structure 130 or its mating structural component can pass through the first hole 111 to achieve mutual connection. For example, the mounting structure 130 may be a threaded base, and the electrical device may include a bolt that mates with the base; or, for another example, the mounting structure 130 may be a bolt, and the electrical device may include a base; the bolt passes through the first hole 111 and connects to the base to achieve mutual connection. Of course, in other embodiments, the mounting structure 130 and its mating structural component can be other types of structural components, as long as a stable connection can be achieved. This application does not impose specific limitations on this.

[0101] Optionally, in some embodiments, the mounting structure 130 can be used to mount the housing 100 to an electrical device. For example, the mounting structure 130 can be used to mount the housing 100 to the frame of the vehicle 1 to achieve a fixed installation of the battery 10 in the vehicle 1. When the housing 100 is mounted on the frame of the vehicle 1, the housing 100 is located in the direction of gravity of the frame. Of course, in other embodiments, the mounting structure 130 can also be used to achieve other installation methods for the housing 100 in the electrical device besides mounting, as long as it can achieve a stable setting of the housing 100 in the electrical device. This application does not specifically limit this.

[0102] Combination Figure 4 and Figure 5As shown in this embodiment, in addition to the mounting structure 130, a rigid structure 140 is also provided at the edge of the first hole 111 of the first part of the box 110. The rigid structure 140 can be an annular structure, with the hollow area in the middle corresponding to the first hole 111. The rigid structure 140 abuts against the part of the first part of the box 110 located at the edge of the first hole 111 and the mounting structure 130 to prevent the mounting structure 130 from contacting the part of the first part of the box 110 located at the edge of the first hole 111.

[0103] According to the technical solution of this application embodiment, the housing 100 is provided with a mounting structure 130, which corresponds to the first hole 111 in the first part of the housing 110, and the housing 100 can be installed to the electrical device through the first hole 111. Furthermore, a rigid structure 140 is provided at the edge of the first hole 111, which abuts against the mounting structure 130. This reduces the probability of wear caused by the mounting structure 130 on the part of the first part of the housing 110 located at the edge of the first hole 111, thereby reducing the probability of decreased rigidity and strength of the first part of the housing 110 due to wear. By improving the rigidity and strength of the first part of the housing 110, the probability of the movement of electrical devices such as vehicles affecting the first part of the housing 110 can be reduced, thereby improving the installation stability of the housing 100 and the battery 10 within the electrical device. This is beneficial for improving the safety and overall performance of the battery 10, and facilitates the promotion and use of the battery 10 in electrical devices.

[0104] Furthermore, compared to the technical solution of using a flexible structural member to abut against the mounting structure 130 to prevent the mounting structure 130 from contacting the first part of the housing 110, the rigid structural member 140 in this embodiment has greater rigidity and strength, higher stability and reliability, and can more effectively withstand the force exerted on it by the mounting structure 130 with less wear. At the same time, the rigid structural member 140, disposed between the first part of the housing 110 and the mounting structure 130, can improve the connection strength between the first part of the housing 110 and the mounting structure 130. When the mounting structure 130 is installed into the electrical device through the first hole 111 in the first part of the housing 110, the higher connection strength between the first part of the housing 110 and the mounting structure 130 can further improve the installation stability of the housing 100 and its battery 10 in the electrical device.

[0105] Optionally, in this embodiment, the first housing 110 can be a composite material, such as sheet molding compound (SMC), prepreg compression molding (PCM) composite material, high pressure resin transfer molding (HP-RTM) composite material, etc. It features light weight and relatively high strength, ensuring the housing 100 has sufficient strength and reliability while reducing its overall weight, facilitating the installation and replacement of the battery 10 in the electrical device.

[0106] Alternatively, in this embodiment, the rigid structural member 140 may be made of a metallic material, such as steel, stainless steel, aluminum alloy, copper, etc. This rigid structural member 140 has stronger wear resistance and a certain degree of rigidity and strength compared to the first housing 110. Therefore, metallic materials are suitable for use as the rigid structural member 140 in this embodiment to improve the installation stability of the housing 100 and the battery 10 within the electrical device.

[0107] Optionally, in some embodiments of the above-described application, the rigid structural member 140 may directly abut against the first partial housing 110. Specifically, the rigid structural member 140 may directly abut against the portion of the first partial housing 110 located at the edge of the first hole 111. However, in this embodiment, the sealing between the rigid structural member 140 and the first partial housing 110 is poor, which may affect the safety performance of electrical components such as the battery cell 20 inside the housing 100.

[0108] Therefore, alternatively, in some other embodiments of the above-mentioned application, the rigid structural member 140 and the first partial box 110 can abut against each other through the first sealing member 151 to ensure the sealing between the rigid structural member 140 and the first partial box 110.

[0109] Figure 6 A schematic cross-sectional view of another housing 100 provided in an embodiment of this application is shown.

[0110] like Figure 6As shown, a first sealing member 151 is disposed between the rigid structural member 140 and the first partial housing 110. Optionally, the first sealing member 151 can be an annular structure, adapted to the shape of the first hole 111 in the first partial housing 110, and disposed between the rigid structural member 140 and the portion of the first partial housing 110 located at the edge of the first hole 111. In this embodiment, the first sealing member 151 connects the rigid structural member 140 and the portion of the first partial housing 110 located at the edge of the first hole 111 to ensure the sealing between the rigid structural member 140 and the first partial housing 110, thereby improving the overall sealing of the housing 100 and enhancing the safety performance of electrical components such as the battery cell 20 inside the housing 100.

[0111] Optionally, the first seal 151 may include, but is not limited to, structural adhesive or rubber material. In addition, the first seal 151 may also be any other material used in related technologies to achieve the sealing function; this application embodiment does not specifically limit this.

[0112] When the first seal 151 is a structural adhesive, it not only ensures the sealing between the rigid structural member 140 and the first portion of the housing 110, but also achieves a reliable connection between them, further improving the overall reliability of the housing 100. Simultaneously, the structural adhesive is easy to apply to the rigid structural member 140 or the first portion of the housing 110, simplifying the process and improving the manufacturing efficiency of the housing 100 and the battery 10.

[0113] Optionally, to improve the strength and other mechanical properties of the first seal 151, the thickness of the first seal 151 between the rigid structural member 140 and the first partial housing 110 also needs to be controlled within a suitable range. By way of example and not limitation, the thickness of the first seal 151 is between 0.2 mm and 0.3 mm, so that the first seal 151 can have better mechanical properties, further improving and optimizing the reliable connection between the rigid structural member 140 and the first partial housing 110.

[0114] In the above Figure 6 In this embodiment, a sealing and even reliable connection between the rigid structural member 140 and the first portion of the housing 110 can be achieved through the first sealing member 151. Furthermore, the rigid structural member 140 and the mounting structural member 130 can also abut against each other through the second sealing member 152 to ensure the sealing performance between them. Of course, to save costs or in a more enclosed installation environment, the rigid structural member 140 can also directly abut against the mounting structural member 130.

[0115] Figure 7A schematic cross-sectional view of another housing 100 provided in an embodiment of this application is shown.

[0116] like Figure 7 As shown, at least a portion of the second seal 152 is disposed between the rigid structural member 140 and the mounting structural member 130. Optionally, the second seal 152 can be an annular structure adapted to the shape of the first hole 111 in the first portion of the housing 110, and disposed on the side of the mounting structural member 130 facing the rigid structural member 140. In this embodiment, the second seal 152 abuts against the rigid structural member 140 and the mounting structural member 130 to ensure the sealing between the rigid structural member 140 and the mounting structural member 130, thereby improving the overall sealing of the housing 100 and enhancing the safety performance of electrical components such as the battery cell 20 inside the housing 100.

[0117] Optionally, the second seal 152 may include, but is not limited to, rubber material or structural adhesive. In addition, the second seal 152 may also be any other material used in related technologies to achieve the sealing function; this application embodiment does not specifically limit this.

[0118] As an example, such as Figure 7 As shown, the second seal 152 can be made of rubber, for example, a rubber ring. A groove may be formed on the side of the mounting structure 130 facing the rigid structure 140. This groove can accommodate the second seal 152, facilitating its installation on the mounting structure 130. It is understood that in this embodiment, the thickness of the second seal 152 must be greater than the depth of the groove, so that at least a portion of the second seal 152 is exposed outside the groove, and at least a portion of the second seal 152 can abut against the rigid structure 130.

[0119] When the second seal 152 is made of rubber, it not only has good sealing performance, but is also easy to install in the mounting structure 130, and is easy to replace and maintain, thereby ensuring that the second seal 152 achieves a long-term and relatively reliable seal between the rigid structure 140 and the mounting structure 130.

[0120] In the above-described embodiment, a first hole 111 is formed in the first housing 110, a rigid structural member 140 is disposed at the edge of the first hole 111, and a mounting structural member 130 is also disposed correspondingly to the first hole 111. Although the rigid structural member 140 can directly or indirectly abut against the mounting structural member 130, and the rigid structural member 140 can directly or indirectly abut against the first housing 110, the three lack a reliable and secure connection. In other words, a more reliable and secure connection can be further achieved between the three. Therefore, in this embodiment, the housing 100 further includes a fixing member 160 for fixing the first housing 110 and the rigid structural member 140 to the mounting structural member 130 to achieve a reliable connection between the three.

[0121] Figure 8 A schematic cross-sectional view of another housing 100 provided in an embodiment of this application is shown.

[0122] like Figure 8 As shown in the embodiment of this application, the housing 100 further includes a fixing member 160, located outside the housing 100 and connected to the mounting structure member 130 through the first hole 111. The fixing member 160 is used to fix the first part of the housing 110 and the rigid structure member 140 to the mounting structure member 130.

[0123] Specifically, such as Figure 8 As shown, the fastener 160 can be located on the side of the first part of the housing 110 facing the outside of the housing 100. The fastener 160 can pass through the first hole 111 from the outside of the housing 100 to fix the first part of the housing 110 and the rigid structural member 140 to the mounting structure 130, so as to achieve a reliable connection between the first part of the housing 110, the rigid structural member 140 and the mounting structure 130.

[0124] As an example rather than a limitation, such as Figure 8 As shown, the fastener 160 can be a screw structure with a flange at one end, which is attached to the first part of the housing 110 from the outside of the housing 100. The screw is inserted into the mounting structure 130 through the first hole 111. Both can have mating threads to achieve a fixed connection between them. At the same time, the flange acts on the first part of the housing 110 and the rigid structure 140 so that the first part of the housing 110 and the rigid structure 140 can be tightly attached to the mounting structure 130.

[0125] Optionally, such as Figure 8 As shown, a space can be reserved in the fastener 160, which is connected to the internal space of the mounting structure 130, so that the structural components in the electrical device can enter the space and achieve mutual connection with the mounting structure 130.

[0126] exist Figure 8 In the embodiment shown, the fastener 160 directly abuts against the first part of the housing 110. During the movement of the electrical device, the vibration of the structural components in the electrical device will cause the mounting structural component 130 and the fastener 160 to vibrate, thereby causing the fastener 160 to wear against the first part of the housing 110.

[0127] Therefore, in this embodiment of the application, the rigid structural member 140 abuts against the mounting structural member 130 and also against the fixing member 160 to prevent the fixing member 160 from contacting the first part of the housing 110, thereby reducing the probability of the fixing member 160 causing wear to the first part of the housing 110.

[0128] Figure 9 A schematic cross-sectional view of another housing 100 provided in an embodiment of this application is shown.

[0129] like Figure 9 As shown in the embodiment of this application, the rigid structural member 140 can cover the side wall of the first hole 111 in the first partial box 110, as well as the surface of the first partial box 110 located at the edge of the first hole 111 and facing the inside and outside of the box 100.

[0130] Specifically, in this embodiment of the application, the first part of the rigid structural member 140 can cover the surface of the first part of the housing 110 located at the edge of the first hole 111 and facing the interior of the housing 100. The first part of the rigid structural member can directly or indirectly abut against the first part of the housing 110 and the mounting structure 130 to reduce the probability of the mounting structure 130 causing wear to the first part of the housing 110.

[0131] In addition, the second part of the rigid structural member 140 can cover the surface of the first part of the housing 110 located at the edge of the first hole 111 and facing the outside of the housing 100. The second part of the rigid structural member can directly or indirectly abut against the first part of the housing 110 and the fastener 160 to reduce the probability of the fastener 160 causing wear to the first part of the housing 110.

[0132] Furthermore, the third portion of the rigid structural member 140 can cover the sidewall of the first hole 111 in the first housing 110. This third rigid structural member can be used to connect the first and second rigid structural members, allowing the rigid structural member 140 to be more securely positioned at the edge of the first hole 111, forming a reliable and stable connection with the first housing 110. Additionally, the third rigid structural member is positioned between the fixing member 160 and the mounting structure 130, providing a rigid connection between them and bearing the tightening force, preventing loosening. Through the installation of this third rigid structural member, the connection between the first housing 110, the rigid structural member 140, and the mounting structure 130 becomes more stable, thereby improving the installation stability of the housing 100 when mounted on the electrical device via the mounting structure 130.

[0133] Optionally, such as Figure 9 As shown, in the rigid structural member 140, a first sealing member 151 may be provided between the first part of the rigid structural member and the surface of the first part of the housing 110 facing the interior of the housing 100, and / or, a filling layer 153 may be provided between the second part of the rigid structural member and the surface of the first part of the housing 110 facing the exterior of the housing 100. The first sealing member 151 ensures the sealing between the first part of the rigid structural member and the surface of the first part of the housing 110 facing the interior of the housing 100. The filling layer 153 can firstly absorb the manufacturing tolerances of the rigid structural member 140 and the first part of the housing 110, thereby reducing the probability of gaps forming between the rigid structural member 140 and the first part of the housing 110 due to manufacturing process influences, and thus improving the overall sealing performance and other related properties of the housing 100. Secondly, the filler layer 153 can be a structural adhesive layer. Besides its sealing function, this structural adhesive layer can also be used to connect the second rigid structural member to the first housing 110, further improving the installation stability of the rigid structural member 140 on the first housing 110. Of course, besides structural adhesive, the filler layer 153 can also be other filler materials, such as rubber, foam, etc. This application embodiment does not specifically limit the specific filler material.

[0134] Optionally, in addition to including the three structural parts described above, the rigid structural member 140 may omit the third part in other embodiments. That is, the rigid structural member 140 may include a first part and a second part that are separate from each other. The first and second parts can be respectively adhered to the surfaces of the first housing 110 located at the edge of the hole 111 and facing the inside and outside of the housing 100 by structural adhesive. In this embodiment, although the installation stability of the rigid structural member 140 on the first housing 110 is slightly worse, the amount of rigid structural member 140 used can be reduced, lowering the overall manufacturing cost of the rigid structural member 140 and the housing 100.

[0135] for Figure 9 The rigid structural member 140 shown may optionally, in some embodiments, consist of two rigid sleeves configured to connect with each other, thereby facilitating the installation of the rigid structural member 140 at the edge of the first hole 111 in the first part housing 110.

[0136] Figure 10 A schematic cross-sectional view of another housing 100 provided in an embodiment of this application is shown.

[0137] like Figure 10 As shown in the embodiment of this application, the rigid structural member 140 may include a first rigid sleeve 141 and a second rigid sleeve 142. The first rigid sleeve 141 includes a first tubular structure 1411 and a first flange structure 1412. The first tubular structure is located on the sidewall of the first hole 111, and the first flange structure 1412 covers the surface of the first portion of the housing 110 located at the edge of the first hole 111 and facing the interior of the housing 100. The second rigid sleeve 142 includes a second tubular structure 1421 and a second flange structure 1422. The second tubular structure 1421 is located on the sidewall of the first hole 111 and is connected to the first tubular structure 1411. The second flange structure 1422 covers the surface of the first portion of the housing 110 located at the edge of the first hole 111 and facing the exterior of the housing 110.

[0138] Specifically, the radial dimensions of the first tubular structure 1411 in the first rigid sleeve 141 and the second tubular structure 1421 in the second rigid sleeve 142 can be adapted to the radial dimensions of the first hole 111 in the first partial housing 110. For example, their radial dimensions can be slightly smaller than the diameter of the first hole 111, so that they can be installed within the first hole 111 and located on the sidewall of the first hole 111. Furthermore, the axial dimensions of the first tubular structure 1411 and the second tubular structure 1421 can be adapted to the thickness of the first partial housing 110. For example, the axial dimensions of the first tubular structure 1411 and the second tubular structure 1421 can be slightly larger than the thickness of the first partial housing 110.

[0139] Additionally, the first flange structure 1412 is connected to the first tubular structure 1411 and is located at one end of the first tubular structure 1411 facing the interior of the housing 100, extending along the surface of the first portion of the housing 110 facing the interior of the housing 100. This first flange structure 1412 can directly abut against the surface of the first portion of the housing 110 located at the edge of the first hole 111 and facing the interior of the housing 100, or, as... Figure 10 As shown, the first flange structure 1412 abuts against the first portion of the housing 110 via the first seal 151. Specifically, the first flange structure 1412 abuts against the surface located at the edge of the first hole 111 and facing the interior of the housing 100 via the first seal 151. In addition, while the first flange structure 1412 abuts against the first portion of the housing 110, it can also abut against the mounting structure 130. Specifically, the first flange structure 1412 can directly abut against the mounting structure 130, or the first flange structure 1412 can abut against the mounting structure 130 via the second seal 152.

[0140] In this embodiment, such as Figure 10 As shown, the width of the first sealing member 151 located between the first flange structure 1412 and the first partial housing 110 can substantially cover the width of the first flange structure 1412. The widths of the first sealing member 151 and the first flange structure 1412 can be understood as their dimensions in a first direction, which is parallel to the radial direction of the first hole 111, or in other words, parallel to the radial direction of the first tubular structure 1411.

[0141] Through this embodiment, sufficient first sealing element 151 can be set in the space of the first flange structure 1412 to a large extent to achieve a more reliable seal and connection between the first flange structure 1412 and the first part of the housing 110.

[0142] As an example and not a limitation, the width of the first seal 151 may be greater than or equal to 15 mm to ensure a more reliable seal and connection between the first flange structure 1412 and the first part of the housing 110.

[0143] In addition, as mentioned above, the thickness of the first seal 151 can be between 0.2 mm and 0.3 mm, so that the first seal 151 can have better mechanical properties, thereby improving and optimizing the reliable connection between the first rigid sleeve 141 and the first part of the housing 110.

[0144] Please continue reading Figure 10The second flange structure 1422 is connected to the second tubular structure 1421 and is located at one end of the second tubular structure 1421 facing the outside of the housing 100, and extends along the surface of the first portion of the housing 110 facing the outside of the housing 100. The second flange structure 1422 can directly abut against the surface of the first portion of the housing 110 located at the edge of the first hole 111 and facing the outside of the housing 100, or, as... Figure 10 As shown, the second flange structure 1422 can abut against the surface of the first part of the box 110 located at the edge of the first hole 111 and facing the outside of the box 100 through the filling layer 153. In other words, a filling layer 153 is provided between the second flange structure 1422 and the surface of the first part of the box 110 located at the edge of the first hole 111 and facing the outside of the box 100.

[0145] In accordance with the above description, in this embodiment, the filler layer 153 can firstly absorb the manufacturing tolerances of the first rigid sleeve 141, the second rigid sleeve 142, and the first partial housing 110, thereby reducing the probability of gaps forming between the first rigid sleeve 141, the second rigid sleeve 142, and the first partial housing 110 due to manufacturing process influences, and thus improving the overall sealing performance and other related properties of the housing 100. Secondly, the filler layer 153 can be a structural adhesive layer. In addition to its sealing function, this structural adhesive layer can also be used to achieve the connection between the second rigid sleeve 142 and the first partial housing 110, thereby further improving the installation stability of the rigid structural component 140 on the first partial housing 110.

[0146] Optionally, the thickness of the filling layer 153 between the second flange structure 1422 and the first part of the housing 110 may be greater than the thickness of the first seal 151, so that the larger thickness of the filling layer 153 can fully absorb the manufacturing tolerances of the first rigid sleeve 141, the second rigid sleeve 142 and the first part of the housing 110, thereby improving the performance of the housing 100.

[0147] Optionally, such as Figure 10 As shown, in some embodiments, the second tubular structure 1421 covers at least a portion of the sidewall of the first hole 111, and the first tubular structure 1411 covers at least a portion of the second tubular structure 1421.

[0148] In this embodiment, based on the mutual connection and arrangement of the first tubular structure 1411 and the second tubular structure 1421 on the sidewall of the first hole 111, compared to the second tubular structure 1421, the first tubular structure 1411 is located further away from the sidewall of the first hole 111. The first flange structure 1412 connected to the first tubular structure 1411 has a longer radial length, thereby increasing the area of ​​the first flange structure 1412 and the contact area between the first flange structure 1412 and the mounting structure 130, thus improving the connection reliability between the first rigid sleeve 141 and the mounting structure 130. Furthermore, in this embodiment, the second sealing element 152 can be conveniently arranged between the first flange structure 1412 and the mounting structure 130, which also increases the contact area between the second sealing element 152 and the first flange structure 1412 and the mounting structure 130, thereby improving the sealing performance of the second sealing element 152 between the first flange structure 1412 and the mounting structure 130. Furthermore, in this embodiment, the first rigid sleeve 141 can be first disposed in the first hole 111, wherein the first tubular structure 1411 can cover at least part of the sidewall of the first hole 111. Then, the second rigid sleeve 142 is connected to the first rigid sleeve 141. The installation process between the two is relatively simple and can fit well with the first hole 111.

[0149] In addition to Figure 10 The first tubular structure 1411 and the second tubular structure 1421 are arranged in the manner shown to achieve mutual cooperation and connection between the first tubular structure 1411 and the second tubular structure 1421 and to be disposed outside the sidewall of the first hole 111. In other embodiments, the first tubular structure 1411 covers at least a portion of the sidewall of the first hole 111, and the second tubular structure 1421 covers at least a portion of the first tubular structure 1411, which can also achieve mutual cooperation and connection between the first tubular structure 1411 and the second tubular structure 1421 and to be disposed on the sidewall of the first hole 111.

[0150] As an example rather than a limitation, such as Figure 10 As shown, the first tubular structure 1411 and the second tubular structure 1421 are configured to be connected to each other via threads. This embodiment is simple in process, easy to implement, and can improve the stable and reliable connection between the first rigid sleeve 141 and the second rigid sleeve 142.

[0151] Of course, in addition to being connected by threads, the first tubular structure 1411 and the second tubular structure 1421 can also be connected by other mechanical connection methods in related technologies. For example, the connection between the first tubular structure 1411 and the second tubular structure 1421 can be achieved by structural adhesive, snap fasteners, convex-concave fits, etc. The embodiments of this application do not specifically limit the specific mechanical connection methods.

[0152] Figure 11 A three-dimensional schematic diagram of the first rigid sleeve 141 and the second rigid sleeve 142 described above is shown.

[0153] like Figure 11 As shown, in order to achieve the first tubular structure 1411 covering at least part of the second tubular structure 1421 and the mating connection between the two, the first tubular structure 1411 of the first rigid sleeve 141 is provided with an external thread, and correspondingly, the second tubular structure 1421 of the second rigid sleeve 142 is provided with an internal thread, so that the two can be mated and connected to each other.

[0154] In addition, such as Figure 11 As shown, a limiting step 1413 is provided on the first flange structure 1412 of the first rigid sleeve 141, which is used to accommodate the first sealing member 151.

[0155] Specifically, in this embodiment, the height of the limiting step 1413 can be controlled within a certain range, thereby controlling the thickness of the first sealing member 151 contained in the limiting step 1413 within a certain range, for example, within 0.2mm to 0.3mm, so that the first sealing member 151 has better mechanical properties.

[0156] In addition, the width of the limiting step 1413 can basically cover the width of the first flange structure 1412, thereby making greater use of the space of the first flange structure 1412, so that the width of the first sealing member 151 accommodated in the limiting step 1413 is wider, thereby giving the first sealing member 151 better sealing performance.

[0157] The technical solution of this application embodiment provides a limiting step 1413 on the first flange structure 1412 of the first rigid sleeve 141 to control the size of the first sealing member 151 accommodated in the limiting step 1413. This implementation method is relatively simple and easy to implement, and can also enable the first sealing member 151 to have good performance, thereby improving the overall manufacturing efficiency and performance of the housing 100.

[0158] See also Figure 11 The first flange structure 1412 of the first rigid sleeve 141 and the second flange structure 1422 of the second rigid sleeve 142 are both polygonal in shape. The polygonal first flange structure 1412 and second flange structure 1422 can provide a locking structure for the installation tool of the first rigid sleeve 141 and the second rigid sleeve 142, so that the installation tool can be locked onto the first flange structure 1412 and the second flange structure 1422, and realize the mutual connection and installation between the first rigid sleeve 141 and the second rigid sleeve 142.

[0159] Specifically, after the installation tool is engaged with the first flange structure 1412 and / or the second flange structure 1422, the first flange structure 1412 and / or the second flange structure 1422 are rotated by rotating the installation tool, thereby driving the first tubular structure 1411 and / or the second tubular structure 1421 to rotate, so that the first tubular structure 1411 and the second tubular structure 1421 are connected to each other by threads, so as to realize the connection and installation between the first rigid sleeve 141 and the second rigid sleeve 142.

[0160] Optionally, the shape of the first flange structure 1412 differs from the shape of the second flange structure 1422. For example, the first flange structure 1412 may be a polygon with N straight sides, and the second flange structure 1422 may be a polygon with M sides, where M and N are two unequal positive integers. Alternatively, if M and N are equal, the two polygons may have different shapes. This is provided as an example, not a limitation. Figure 11 In the illustrated embodiment, both the first flange structure 1412 and the second flange structure 1422 are dodecagonal in shape, but the first flange structure 1412 is a regular dodecagon, while the second flange structure 1422 is not a regular dodecagon.

[0161] Through the technical solution of the embodiments of this application, the shape of the first flange structure 1412 is different from that of the second flange structure 1422, which can play a role in preventing errors. That is, the first rigid sleeve 141 and the second rigid sleeve 142 can be distinguished by the shapes of the first flange structure 1412 and the second flange structure 1422, which is conducive to the correct installation of the first rigid sleeve 141 and the second rigid sleeve 142 on the first part of the housing 110.

[0162] Optionally, in the above embodiments, the first hole 111 may be located in the central region of the first housing 110. Correspondingly, in this embodiment, the rigid structural member 140 and the mounting structural member 130 are also located in the central region of the housing 100. Through the mounting structural member 130 and the rigid structural member 140 located in the central region of the housing 100, the housing 100 and the battery 10 thereon can be installed in the power device in a more balanced and stable manner.

[0163] Optionally, the housing 100 may include one or more rigid structural members 140. When the housing 100 includes multiple rigid structural members 140, the installation stability of the housing 100 and the battery 10 thereon in the electrical device can be further improved.

[0164] Figure 12 A three-dimensional structural schematic diagram of the housing 100 provided in an embodiment of this application is shown. Figure 13 It shows Figure 12 An exploded three-dimensional view of the housing 100 in the embodiment shown.

[0165] like Figure 12 As shown in the embodiment of this application, the box 100 includes two rigid structural members 140, which are distributed in the middle region of the first part of the box 110.

[0166] Optionally, the first part of the box 110 can be approximated as a plate structure, and the two rigid structural members 140 can be located on the central axis L1 of the first part of the box 110 in the length direction and symmetrically arranged with respect to the central axis L2 of the first part of the box 110 in the width direction.

[0167] Alternatively, in other embodiments, the two rigid structural members 140 are symmetrically arranged with respect to the central axis L1 in the length direction of the first partial housing 110, or symmetrically arranged with respect to the diagonal of the first partial housing 110. Through the above embodiments, the housing 100 and its associated battery 10 can be installed in the electrical device in a more balanced and stable manner.

[0168] Optionally, see [link to relevant documentation] Figure 12 and Figure 13 In this application example, the housing 100 may further include a second housing 120, which can be engaged with the first housing 110 to form a receiving cavity for accommodating the battery cell 20.

[0169] Specifically, the second part of the housing 120 can be a hollow cuboid structure with an opening, and its size can be matched with the first part of the housing 110 to form a sealed cavity, thereby improving the overall performance of the battery cell 20 and other related structural components located in the cavity.

[0170] Optionally, such as Figure 13 As shown, a crossbeam 121 may be provided in the second part of the housing 120. The crossbeam 121 can be used to separate multiple battery cells 20 from each other and improve the installation stability of multiple battery cells 20 in the housing 100.

[0171] In some embodiments, the mounting structure 130 may be disposed on the crossbeam 121. For example, the mounting structure 130 may be disposed on the surface of the crossbeam 121 opposite to the first portion of the housing 110, so that the mounting structure 130 corresponds to the first hole 111 in the first portion of the housing 110.

[0172] By utilizing the technical solution of this application embodiment, the installation structure 130 is set on the crossbeam 121 in the second part of the housing 120. On the one hand, it will not occupy other space in the housing 100 used to accommodate the battery cell 20, thereby increasing the energy density of the battery 10. On the other hand, the crossbeam 121 has high installation stability in the housing 100. Therefore, setting the installation structure 130 on the crossbeam 121 can also improve the installation stability of the installation structure 130 in the housing 100.

[0173] In addition, such as Figure 13 As shown in the embodiments of this application, the rigid structural member 140 can be as follows: Figures 10 to 11 The rigid structural member 140 shown includes a first rigid sleeve 141 and a second rigid sleeve 142. The second rigid sleeve 142 and the first rigid sleeve 141 cover the area located at the edge of the first hole 111 in the first part of the housing 110. The first rigid sleeve 141 and the second rigid sleeve 142 can be connected by threads and fixed to the position of the first hole 111.

[0174] Furthermore, in Figure 13 In the illustrated embodiment, the first rigid sleeve 141 and the second rigid sleeve 142 are correspondingly disposed with the mounting structure 130 and the fixing member 160. The fixing member 160 can pass through the first rigid sleeve 141 and the second rigid sleeve 142 to be fixed to the mounting structure 130. The first rigid sleeve 141 and the second rigid sleeve 142 bear the tightening force between the fixing member 160 and the mounting structure 130, improving the rigid connection at this point and preventing loosening, thereby improving the installation stability of the housing 100 in the electrical device. At the same time, the first rigid sleeve 141 and the second rigid sleeve 142 can also reduce the probability of wear caused by the fixing member 160 and the mounting structure 130 on the first part of the housing 110, improving the overall service life and reliability of the housing 100.

[0175] It should be noted that, Figure 13 In the illustrated embodiment, a first sealing element 151 may be provided between the first rigid sleeve 141 and the first partial housing 110, a second sealing element 152 may be provided between the first rigid sleeve 141 and the mounting structure 130, and a filling layer 153 may be provided between the second rigid sleeve 142 and the first partial housing 110. The specific arrangement and related functions of the first sealing element 151, the second sealing element 152, and the filling layer 153 can be found in the relevant descriptions in the above embodiments, and will not be elaborated upon here.

[0176] One embodiment of this application also provides a battery 10, which may include at least one battery cell 20 and a housing 100 as described in the foregoing embodiments, the housing 100 being used to house at least one battery cell 20.

[0177] One embodiment of this application also provides an electrical device, which may include the battery 10 in the foregoing embodiments, the battery 10 being used to provide electrical energy to the electrical device.

[0178] Alternatively, the electrical device can be a vehicle, a ship, or a spacecraft.

[0179] The foregoing described the housing 100, battery 10, and power-consuming device of the present application embodiments. The following will describe the method and apparatus for preparing the battery of the present application embodiments, wherein parts not described in detail can be referred to the foregoing embodiments.

[0180] Figure 14 A schematic flowchart of a method 300 for preparing a battery according to an embodiment of this application is shown. Figure 14 As shown, the method 300 may include the following steps.

[0181] S301: Provide at least one battery cell 20.

[0182] S302: Provides enclosure 100.

[0183] Specifically, the enclosure 100 includes: a first enclosure 110 having a first hole 111; and a mounting structure 130 located inside the enclosure 100 and corresponding to the first hole 111, wherein the mounting structure 130 is used to install the enclosure 100 to an electrical device through the first hole 111; wherein a rigid structure 140 is provided at the edge of the first hole 111, and the rigid structure 140 abuts against the mounting structure 130 to prevent the mounting structure 130 from contacting the first enclosure 110.

[0184] S303: At least one battery cell 20 is housed in the housing 100.

[0185] Figure 15 A schematic block diagram of a battery fabrication apparatus 400 according to one embodiment of this application is shown. Figure 15 As shown, the battery manufacturing apparatus 400 may include a providing module 401 and an mounting module 402.

[0186] Specifically, the first providing module 401 is used to provide at least one battery cell 20 and a housing 100.

[0187] The enclosure 100 includes: a first enclosure 110 having a first hole 111; and a mounting structure 130 located inside the enclosure 100 and corresponding to the first hole 111, the mounting structure 130 being used to install the enclosure 100 to an electrical device through the first hole 111; wherein a rigid structure 140 is provided at the edge of the first hole 111, the rigid structure 140 abutting against the mounting structure 130 to prevent the mounting structure 130 from contacting the first enclosure 110.

[0188] Mounting module 402 is used to house at least one battery cell 20 within housing 100.

[0189] Although this application has been described with reference to the above embodiments, various modifications can be made and components can be replaced with equivalents without departing from the scope of this application. In particular, the technical features mentioned in the various embodiments can be combined in any manner, provided there is no structural conflict. This application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A battery casing (100), characterized in that, include: The first part of the box (110) is provided with a first hole (111); The mounting structure (130) is located inside the housing (100) and is correspondingly provided with the first hole (111). The mounting structure (130) is used to install the housing (100) to the electrical device through the first hole (111). The first hole (111) is provided with a rigid structural member (140) at its edge. The rigid structural member (140) abuts against the mounting structural member (130) to prevent the mounting structural member (130) from contacting the first part of the box (110). The rigid structural member (140) includes a first rigid sleeve (141) and a second rigid sleeve (142). The first rigid sleeve (141) includes a first tubular structure (1411) and a first flange structure (1412). The first tubular structure (1411) is located on the side wall of the first hole (111), and the first flange structure (1412) covers the surface of the first part of the box (110) located at the edge of the first hole (111) and facing the interior of the box (100). The second rigid sleeve (142) includes a second tubular structure (1421) and a second flange structure (1422). The second tubular structure (1421) is located on the side wall of the first hole (111) and is connected to the first tubular structure (1411). The second flange structure (1422) covers the surface of the first part of the box (110) located at the edge of the first hole (111) and facing the outside of the box (100).

2. The housing (100) according to claim 1, characterized in that, The rigid structural member (140) and the first part of the box (110) abut against each other through the first sealing member (151) to ensure the sealing between the rigid structural member (140) and the first part of the box (110).

3. The housing (100) according to claim 1, characterized in that, The rigid structural member (140) and the mounting structural member (130) abut against each other through the second sealing member (152) to ensure the sealing between the rigid structural member (140) and the mounting structural member (130).

4. The housing (100) according to claim 1, characterized in that, The housing (100) further includes a fastener (160), located outside the housing (100) and connected to the mounting structure (130) through the first hole (111). The fastener (160) is used to fix the first part of the housing (110) and the rigid structure (140) to the mounting structure (130).

5. The housing (100) according to claim 4, characterized in that, The rigid structural member (140) abuts against the fastener (160) to prevent the fastener (160) from contacting the first part of the housing (110).

6. The housing (100) according to claim 1, characterized in that, The rigid structural member (140) covers the sidewall of the first hole (111), and the first part of the box (110) is located on the edge of the first hole (111) and faces the inside and outside of the box (100).

7. The housing (100) according to claim 1, characterized in that, The second tubular structure (1421) covers at least a portion of the sidewall of the first hole (111), and the first tubular structure (1411) covers at least a portion of the second tubular structure (1421).

8. The housing (100) according to claim 1, characterized in that, The first tubular structure (1411) and the second tubular structure (1421) are connected to each other by threaded connection.

9. The housing (100) according to claim 1, characterized in that, The first flange structure (1412) and the first part of the housing (110) abut against each other through the first seal (151), the width of the first seal (151) substantially covering the width of the first flange structure (1412), and / or the thickness of the first seal (151) is between 0.2 mm and 0.3 mm.

10. The housing (100) according to claim 9, characterized in that, The first flange structure (1412) is provided with a limiting step for accommodating the first seal (151).

11. The housing (100) according to claim 9, characterized in that, The first seal (151) is a structural adhesive.

12. The housing (100) according to claim 1, characterized in that, A filling layer (153) is provided between the second flange structure (1422) and the surface of the first partial box (110) located at the edge of the first hole (111) and facing the outside of the box (100).

13. The housing (100) according to claim 1, characterized in that, Both the first flange structure (1412) and the second flange structure (1422) are polygonal in shape.

14. The housing (100) according to claim 13, characterized in that, The shape of the first flange structure (1412) is different from that of the second flange structure (1422).

15. The housing (100) according to claim 1, characterized in that, The first hole (111) is located in the middle region of the first part of the box (110).

16. The housing (100) according to claim 1, characterized in that, The first part of the box (110) is made of composite material, and the rigid structural component (140) is made of metal.

17. The housing (100) according to any one of claims 1 to 16, characterized in that, The housing (100) further includes a second housing (120) and a crossbeam (121). The second housing (120) and the first housing (110) are interlocked to form a cavity for accommodating a battery cell (20). The crossbeam (121) is disposed in the second housing (120), and the mounting structure (130) is disposed on the crossbeam (121).

18. A battery (10), characterized in that, include: At least one battery cell (20), and The housing (100) as described in any one of claims 1 to 17 is used to house the at least one battery cell (20).

19. An electrical appliance, characterized in that, include: The battery (10) according to claim 18 is used to provide electrical energy to the electrical device.

20. A method for preparing a battery (300), characterized in that, include: Provide (S301) at least one battery cell (20); Provide (S302) a housing, said housing (100) comprising: The first part of the box (110) is provided with a first hole (111); The mounting structure (130) is located inside the housing (100) and is correspondingly provided with the first hole (111). The mounting structure (130) is used to install the housing (100) to the electrical device through the first hole (111). The first hole (111) is provided with a rigid structural member (140) at its edge. The rigid structural member (140) abuts against the mounting structural member (130) to prevent the mounting structural member (130) from contacting the first part of the box (110). The at least one battery cell (20) is housed (S303) in the housing (100); The rigid structural member (140) includes a first rigid sleeve (141) and a second rigid sleeve (142). The first rigid sleeve (141) includes a first tubular structure (1411) and a first flange structure (1412). The first tubular structure (1411) is located on the side wall of the first hole (111), and the first flange structure (1412) covers the surface of the first part of the box (110) located at the edge of the first hole (111) and facing the interior of the box (100). The second rigid sleeve (142) includes a second tubular structure (1421) and a second flange structure (1422). The second tubular structure (1421) is located on the side wall of the first hole (111) and is connected to the first tubular structure (1411). The second flange structure (1422) covers the surface of the first part of the box (110) located at the edge of the first hole (111) and facing the outside of the box (100).

21. An apparatus (400) for preparing a battery, characterized in that, include: A module (401) is provided for providing at least one battery cell (20) and a housing; The housing (100) includes: The first part of the box (110) is provided with a first hole (111); The mounting structure (130) is located inside the housing (100) and is correspondingly provided with the first hole (111). The mounting structure (130) is used to install the housing (100) to the electrical device through the first hole (111). The first hole (111) is provided with a rigid structural member (140) at its edge. The rigid structural member (140) abuts against the mounting structural member (130) to prevent the mounting structural member (130) from contacting the first part of the box (110). Mounting module (402) for accommodating at least one battery cell (20) in the housing (100); The rigid structural member (140) includes a first rigid sleeve (141) and a second rigid sleeve (142). The first rigid sleeve (141) includes a first tubular structure (1411) and a first flange structure (1412). The first tubular structure (1411) is located on the side wall of the first hole (111), and the first flange structure (1412) covers the surface of the first part of the box (110) located at the edge of the first hole (111) and facing the interior of the box (100). The second rigid sleeve (142) includes a second tubular structure (1421) and a second flange structure (1422). The second tubular structure (1421) is located on the side wall of the first hole (111) and is connected to the first tubular structure (1411). The second flange structure (1422) covers the surface of the first part of the box (110) located at the edge of the first hole (111) and facing the outside of the box (100).

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