Box body of battery, battery, electric equipment and energy storage system

Abstract

The embodiment of the invention provides a box body of a battery, the battery, a power utilization device and an energy storage system. A mounting part is arranged on a first surface of a first wall of a box body of the battery, a friction coefficient between the mounting part and a bearing surface of a bearing component is smaller than that between the first surface and the bearing surface, and the first surface faces the bearing surface under the condition that the box body of the battery is borne on the bearing surface. According to the box body of the battery, the battery, the power utilization device and the energy storage system provided by the embodiment of the invention, the installation efficiency of the box body of the battery can be improved.

Description

Battery boxes, batteries, electrical equipment and energy storage systems Technical Field

[0001] The present application relates to the field of energy storage devices, and in particular to a battery box, a battery, an electrical device, and an energy storage system. Background Art

[0002] Currently, during the installation of the battery box, the bottom wall of the battery box is usually installed in a manner that directly contacts the surface of the supporting component. When the box and the supporting component move relative to each other, large resistance is generated, thereby affecting the installation efficiency of the battery box.

[0003] Therefore, how to provide a battery box to improve the installation efficiency between the box and the supporting components has become a technical problem that urgently needs to be solved in this field.

[0004] Summary of the Invention

[0005] The embodiments of the present application provide a box, a battery, an electrical device, and an energy storage system, which can improve the installation efficiency between the battery box and the supporting components.

[0006] In a first aspect, a battery box is provided, wherein a mounting member is provided on the first surface of the first wall of the box, the friction coefficient between the mounting member and the bearing surface of the bearing component is smaller than the friction coefficient between the first surface and the bearing surface, and when the box is supported on the bearing surface, the first surface faces the bearing surface.

[0007] Therefore, in the embodiment of the present application, since the coefficient of friction between the mounting member and the surface of the bearing member is relatively low, on the one hand, compared to the case where no mounting member is provided on the box body and only the first surface and the bearing surface of the bearing member are relatively moved, during the installation of the box body, the resistance generated by the relative movement between the mounting member and the bearing surface of the bearing member is relatively low, which is conducive to the rapid installation and removal of the box body on the bearing member. On the other hand, since the coefficient of friction between the mounting member and the surface of the bearing member is relatively low, the surface wear of the box body and the bearing member is reduced, which can reduce damage to the metal coating of the box body and the bearing member, and can increase the service life of the box body and the bearing member. At the same time, this method has a simple structure and low cost.

[0008] In some possible embodiments, the friction coefficient between the mounting member and the bearing surface of the bearing component is less than or equal to 0.3, which can reduce the resistance generated during relative movement between the box and the bearing component, thereby improving the efficiency of installing and disassembling the box on the bearing component.

[0009] In some possible implementations, the mounting member is made of plastic. In the present embodiment, due to its self-lubricating properties and low coefficient of friction, plastic is used to reduce friction between the battery housing and the supporting surface of the supporting component, thereby reducing resistance generated during relative movement between the housing and the supporting component, thereby improving the efficiency of installing and removing the battery housing from the supporting component. Furthermore, plastic is easy to process and purchase, resulting in low processing costs.

[0010] In some possible embodiments, the mounting member may be made of polyoxymethylene, polypropylene, polycarbonate, or polyamide. Using polyoxymethylene, polypropylene, polycarbonate, or polyamide, which exhibits lubricity and a low coefficient of friction, as the mounting member can help reduce friction between the battery housing and the supporting surface of the supporting member during installation and removal, thereby reducing resistance generated during relative movement between the housing and the supporting member. This facilitates insertion and removal of the battery housing, improves efficiency in installation and removal, and is relatively cost-effective and easy to manufacture and purchase.

[0011] In some possible embodiments, at least two of the mounting members are spaced apart on the first surface. Thus, in the embodiments of the present application, multiple mounting members can be spaced apart on the first surface of the first wall of the battery case, depending on actual needs. This helps increase the contact area between the battery case and the bearing surface of the bearing component, evenly distributes the weight of the battery case, improves the force structure, and reduces the difficulty of the mounting members supporting the case due to the heavy weight of the case, causing the first wall of the case to contact the bearing surface of the bearing component.

[0012] In some possible implementations, the mounting member is disposed at an edge of the first wall. In the embodiment of the present application, when the battery case is installed on or removed from the support member, the edge of the battery case is prone to friction or collision with the support member. By disposing the mounting member at the edge of the first wall of the battery case, wear between the edge of the first wall of the battery case and the support member can be reduced, thereby improving safety during installation and removal of the battery case from the support member.

[0013] In some possible embodiments, the mounting member is a strip-shaped structure extending along a first direction, the first direction being parallel to the first surface, and when the case is placed on the support member, the first direction is parallel to the relative movement direction of the case and the support member. Thus, in the embodiment of the present application, by configuring the mounting member as a strip-shaped structure extending along the first direction, and the first direction being parallel to the relative movement direction of the case and the support member, the battery case can be pushed in and pulled out of the support member more quickly, which is conducive to improving the efficiency of installing and removing the battery case from the support member. At the same time, this method has a simple structure and is easy to process.

[0014] In some possible embodiments, the first wall is further provided with a limiting structure, which is used to limit the movement of the mounting member in a second direction, the second direction being parallel to the first surface and perpendicular to the first direction. In the embodiment of the present application, when the battery case deviates from the installation lock position during installation and needs to be corrected, or when the battery case is subjected to external impact during transportation, it will inevitably be subjected to lateral friction in the second direction, which is parallel to the first surface and perpendicular to the first direction. The mounting member has a weak ability to resist friction in this second direction, which can easily cause the mounting member to slip or fall off, thereby causing the first wall of the case to contact the bearing surface of the bearing member. The resistance to relative movement between the first wall of the case and the bearing surface of the bearing member is large, which reduces the efficiency of installation and removal of the case on the bearing member. By providing a limiting structure on the first wall for limiting the movement of the mounting member in the second direction, the contact between the first wall of the case and the bearing surface of the bearing member caused by sliding or falling off in the second direction is reduced, thereby facilitating the improvement of the installation and removal rate of the mounting member on the bearing member.

[0015] In some possible embodiments, the limiting structure is a raised structure protruding from the first surface to reduce sliding of the mounting member in the second direction. At the same time, the raised structure is arranged on the outside of the box body, which can reduce the internal space of the box body occupied by the battery and improve the space utilization of the box body.

[0016] In some possible implementations, the protrusion extends along the first direction. In the embodiment of the present application, by setting the protrusion of the limiting structure to extend along the first direction, the fixing effect of the protrusion on the mounting member can be improved to reduce sliding or falling off of the mounting member in the second direction. At the same time, the structure is simple and easy to process.

[0017] In some possible embodiments, the mounting member on the battery case is provided with the protruding structures on both sides of the mounting member in the second direction. Thus, in the embodiment of the present application, in the second direction, by providing a protruding structure on the left and right sides of the mounting member on the first wall of the battery case, the mounting member is confined between the two protruding structures, thereby further improving the fixing effect on the mounting member, facilitating the reduction of sliding of the mounting member on the first wall of the battery case in the second direction, and improving the efficiency of installing and removing the battery case from the supporting component.

[0018] In some possible embodiments, in a third direction, the size of the protruding structure is smaller than the size of the mounting member, and the third direction is perpendicular to the first surface. In the embodiment of the present application, since the friction coefficient of the material of the protruding structure is generally large, when the protruding structure contacts the bearing surface of the bearing member, the resistance encountered by the box body during installation and removal from the bearing member will increase, thereby reducing the speed of installation and removal of the box body from the bearing member. By setting the size of the protruding structure in the third direction to be smaller than the size of the mounting member in the third direction, the problem of low installation speed caused by contact between the protruding structure and the bearing surface of the bearing member can be effectively reduced, thereby increasing the speed of installation and removal of the box body from the bearing member, and at the same time, it can also reduce the damage to the surface coating of the box body and the bearing member caused by rigid friction between the protruding structure and the bearing member.

[0019] In some possible embodiments, the raised structure includes a main body and an extension portion, the main body extending along the third direction, the extension portion connected to one end of the main body away from the first surface and extending in a direction close to the mounting member, thereby further enhancing the fixing effect of the raised structure on the mounting member.

[0020] In some possible implementations, the protruding structures on both sides of the mounting member in the second direction form a receiving groove with the first surface, the opening of the receiving groove being arranged opposite to the first surface, and the mounting member is partially received in the receiving groove. Thus, in the embodiment of the present application, the protruding structures on both sides of the mounting member in the second direction form a receiving groove with the first surface of the box body to fix the mounting member, which can effectively reduce the sliding and falling off of the mounting member in the second direction. Secondly, by arranging that the mounting member is partially received in the receiving groove, the protruding structure can be prevented from contacting the bearing surface of the bearing component, thereby reducing damage to the surface coating of the box body and the bearing component.

[0021] In some possible embodiments, the limiting structure is a receiving groove recessed inwardly in the first surface, the opening of the receiving groove being flush with the first surface, and the mounting member being partially received in the receiving groove. Thus, by configuring the limiting structure as a receiving groove recessed inwardly ...

[0022] In some possible embodiments, in the second direction, the size of the opening is smaller than the size of the bottom wall of the receiving slot, the bottom wall being the wall of the receiving slot opposite the opening. Thus, by setting the size of the opening of the receiving slot smaller than the size of the bottom wall of the receiving slot, the mounting member can be secured in the receiving slot and the mounting member is prevented from sliding or falling off in the second and third directions, thereby improving the retaining effect of the retaining structure on the mounting member.

[0023] In some possible embodiments, the cross-section of the receiving groove perpendicular to the first direction is an inverted trapezoid. Thus, by setting the cross-section of the receiving groove perpendicular to the first direction to an inverted trapezoid, the sliding of the mounting member in the second and third directions is restricted. Furthermore, due to the simple design structure, this solution is easy to form and process, thereby reducing manufacturing costs.

[0024] In some possible implementations, the limiting structure is integrally formed with the box body to improve the efficiency of processing and assembling the battery box body.

[0025] In some possible implementations, the mounting member is fixed to the first surface via an adhesive. In the embodiment of the present application, the mounting member can be fixed to the first surface of the first wall of the battery case via an adhesive without damaging the first wall of the battery case. This fixing method is simple and reliable, and helps reduce processing costs.

[0026] In some possible embodiments, the mounting member is connected to the first wall by a bolt, which passes through the mounting member and is partially contained within the first wall, thereby further enhancing the fixing effect between the mounting member and the first surface of the first wall of the battery box to reduce sliding and falling off of the mounting member on the first wall.

[0027] In some possible implementations, the bolt does not protrude from the surface of the mounting member that contacts the support component. Thus, in the embodiments of the present application, by arranging the bolt so that it does not protrude from the surface of the mounting member that contacts the support component, damage to the surface coating of the support component caused by relative movement between the bolt and the support component during installation and removal of the battery case from the support component can be effectively reduced, thereby reducing the impact on the installation and removal speed of the case from the support component.

[0028] In some possible embodiments, the mounting member is provided with guide portions at both ends of the first direction. As the distance from the center of the mounting member increases, the distance between the guide slope of the guide portion and the first surface gradually decreases along a third direction, which is perpendicular to the first surface. Thus, by providing guide portions at both ends of the mounting member along the first direction, the housing can be pushed in and pulled out in a specific direction, thereby improving the accuracy and efficiency of installing and removing the battery housing from the support component.

[0029] In some possible embodiments, the mounting member has a smaller dimension than the first wall in a first direction, the first direction being parallel to the first surface, and the first direction being parallel to the direction of relative movement between the box and the support member when the box is placed against the support member. Thus, in this embodiment of the present application, since the space reserved for the battery box in the battery cabinet is limited, by setting the mounting member's dimension along the first direction to be smaller than the dimension of the first wall of the box in the first direction, it is possible to reduce the difficulty of smoothly inserting the box into the battery cabinet due to the mounting member being too long, and also to reduce processing costs.

[0030] In a second aspect, a battery is provided, comprising: a battery cell, and the box body described in the first aspect, wherein the battery cell is accommodated in the box body.

[0031] In a third aspect, an electrical device is provided, comprising: the battery described in the second aspect, wherein the battery is used to provide electrical energy to the electrical device.

[0032] In some embodiments, the electrical equipment is a vehicle, a ship, or a spacecraft.

[0033] In a fourth aspect, an energy storage system is provided, comprising the battery described in the second aspect.

[0034] In some embodiments, the energy storage system further includes a supporting component, which is used to support the battery. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] FIG1 is a schematic structural diagram of a battery cabinet disclosed in one embodiment of the present application;

[0036] FIG2 is a schematic structural diagram of a vehicle disclosed in an embodiment of the present application;

[0037] FIG3 is a schematic diagram of a battery and a carrier component disclosed in an embodiment of the present application;

[0038] FIG4 is a schematic diagram of a cross section of a battery box disclosed in one embodiment of the present application;

[0039] FIG5 is an enlarged schematic diagram of area A in FIG4 ;

[0040] FIG6 is a front view of an assembled battery and a supporting component disclosed in one embodiment of the present application;

[0041] FIG7 is an enlarged schematic diagram of area B in FIG6 ;

[0042] FIG8 is another enlarged schematic diagram of area B in FIG6 ;

[0043] FIG9 is another enlarged schematic diagram of area B in FIG6 ;

[0044] FIG10 is another enlarged schematic diagram of area B in FIG6 ;

[0045] FIG11 is another enlarged schematic diagram of area B in FIG6 ;

[0046] FIG12 is a schematic structural diagram of a battery box disclosed in one embodiment of the present application;

[0047] FIG13 is an enlarged schematic diagram of area C in FIG11 ;

[0048] FIG14 is an enlarged schematic diagram of an example of area D in FIG11;

[0049] In the drawings, the drawings are not drawn to scale. DETAILED DESCRIPTION

[0050] The following detailed description of the embodiments of the present application is provided in conjunction with the accompanying drawings and examples. The following detailed description of the embodiments and the accompanying drawings are used to illustrate the principles of the present application, but are not intended to limit the scope of the present application, that is, the present application is not limited to the described embodiments.

[0051] In the description of this application, it should be noted that, unless otherwise specified, "multiple" means more than two; the terms "upper", "lower", "left", "right", "inside", "outside", etc., indicating directions 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 direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting this application. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. "Vertical" is not strictly perpendicular, but is within the allowable error range. "Parallel" is not strictly parallel, but is within the allowable error range.

[0052] The directional words appearing in the following description are all directions shown in the figures, and do not limit the specific structure of this application. In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0053] The term "and / or" in this application simply describes an association between related objects, indicating that three possible relationships exist. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this application generally indicates that the related objects are in an "or" relationship.

[0054] In the embodiments of this application, the same reference numerals represent the same components, and for the sake of brevity, detailed descriptions of the same components in different embodiments are omitted. It should be understood that the thickness, length, width, and other dimensions of the various components in the embodiments of this application, as well as the overall thickness, length, width, and other dimensions of the integrated device shown in the drawings are merely illustrative and should not constitute any limitation on this application.

[0055] With the rapid development of battery technology, safety accidents caused by battery failures occur frequently, thus putting higher requirements on the safety and reliability of batteries. For various types of electrical equipment, it is usually necessary to install multiple batteries. The simpler the installation, disassembly and maintenance process of the battery box, the lower the maintenance cost of the battery box, which is conducive to improving the safety and reliability of the battery box.

[0056] Currently, there are two main methods for installing battery boxes in this field. One is to directly use the bottom wall of the battery box and the surface of the load-bearing component (e.g., the battery holder) for rigid friction, adjust the mounting holes on the box into position, and then fix them with bolts. This method is relatively slow to install and remove, resulting in low efficiency in installing and removing the battery box. The other is to use a roller structure, that is, to fix a fixed frame equipped with rollers on the battery rack, then place the battery box on the rollers, move the box to the installation position by sliding the rollers, and then fix the box to the fixed frame with push pins and latches. This method requires a large internal space in the battery cabinet, and the entire box installation device is heavy, complex in structure, and has high processing costs. In addition, the installation and removal process of the box is relatively cumbersome and has poor reliability.

[0057] In view of this, an embodiment of the present application provides a battery case, wherein a mounting member is provided on the first surface of the first wall of the case, and the friction coefficient between the mounting member and the bearing surface of the bearing member is smaller than the friction coefficient between the first surface and the bearing surface. When the case is supported on the bearing surface, the first surface faces the bearing surface. In this way, by providing a mounting member on the first surface of the first wall of the battery case, and the friction coefficient between the mounting member and the surface of the bearing member is smaller than the friction coefficient between the first surface and the bearing surface, the surface wear of the battery case and the bearing member during installation and removal can be effectively reduced, and the case is facilitated to be quickly installed and removed, significantly improving the reliability of the case during installation and removal. At the same time, the structure is simple, easy to process, and the cost is low.

[0058] It should be understood that the technical solutions described in the embodiments of the present application are applicable to various electrical devices using batteries.

[0059] Electrical equipment can be vehicles, mobile phones, portable devices, laptops, ships, spacecraft, electric toys and electric tools, etc. Vehicles can be fuel vehicles, gas vehicles or new energy vehicles. New energy vehicles can be pure electric vehicles, hybrid vehicles or extended-range vehicles, etc. Spacecraft include airplanes, rockets, space shuttles and spacecraft, etc. Electric toys include fixed or mobile electric toys, such as game consoles, electric car toys, electric ship toys and electric airplane toys, etc. Electric tools include metal cutting tools, grinding power tools, assembly power tools and railway power tools, such as electric drills, electric grinders, electric wrenches, electric screwdrivers, electric hammers, impact drills, concrete vibrators and electric planers, etc. This application does not impose any special restrictions on the above-mentioned electrical equipment.

[0060] It should be understood that the technical solutions described in the embodiments of the present application are not limited to the electrical equipment described above, but can also be applied to all devices that use batteries. For the sake of simplicity, the following embodiments are described in detail using the electrical equipment as a vehicle as an example.

[0061] For example, as shown in FIG1 , it is a structural schematic diagram of a vehicle 1 provided in an embodiment of the present application. The vehicle 1 may be a fuel vehicle, a gas vehicle or a new energy vehicle. The new energy vehicle may be a pure electric vehicle, a hybrid vehicle or an extended-range vehicle, etc. A motor 400, a controller 300 and a battery 100 may be provided inside the vehicle 1. The controller 300 is used to control the battery 100 to supply power to the motor 400. For example, a battery 100 may be provided at the bottom, front or rear of the vehicle 1. The battery 100 may be used to power the vehicle 1. For example, the battery 100 may be used as an operating power source for the vehicle 1, for the circuit system of the vehicle 1, for example, for the working power requirements during the start-up, navigation and operation of the vehicle 2. In another embodiment of the present application, the battery 100 may not only be used as an operating power source for the vehicle 1, but also as a driving power source for the vehicle 1, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1.

[0062] In order to meet different power usage requirements, the battery 100 in the embodiment of the present application can be a battery module or a battery pack. The battery 100 may include at least one battery cell group, and the battery cell group includes a plurality of battery cells, wherein the plurality of battery cells can be electrically connected in series, in parallel, or in mixed connection to form the battery 100, wherein mixed connection refers to a mixture of series and parallel connection. The battery 100 may also be referred to as a battery pack. For example, a plurality of battery cells may first be connected in series, in parallel, or in mixed connection to form a battery module, and a plurality of battery modules may then be connected in series, in parallel, or in mixed connection to form the battery 100. In other words, a plurality of battery cells may directly form the battery 100, or they may first be formed into a battery module, and then the battery modules may be formed into the battery 100.

[0063] The technical solutions described in the embodiments of this application are applicable to various energy storage systems, such as energy storage containers, battery cabinets, etc.

[0064] Figure 2 shows a schematic diagram of the structure of a battery cabinet 2 according to an embodiment of the present application. As shown in Figure 2, the battery cabinet 2 includes an energy storage box 10, a box 20 for batteries 100, and a support member 30. The box 20 for batteries 100 is placed on the support member 30 to be fixed inside the battery cabinet 2. The battery cabinet 2 can be used to accommodate multiple boxes 20 for batteries 100. For example, the number of boxes 20 can be one or more, which is not limited in this embodiment of the present application.

[0065] It should be understood that the battery cabinet 2 in the embodiment of the present application can be a hollow structure. For example, the battery cabinet 2 in the present application is a hollow rectangular structure. In addition, the shape of the battery cabinet 2 in the embodiment of the present application can be flexibly set according to actual needs. In addition, to facilitate the transportation of the box 20 and reduce transportation costs, the battery cabinet 2 in the embodiment of the present application can be configured as a standard size battery cabinet 2. For example, a 20-inch or 40-inch battery cabinet 2 can be used as an example, and the embodiment of the present application is not limited to this.

[0066] For ease of description, the present embodiment defines three directions based on the rectangular battery cabinet 2, wherein the six faces of the rectangular parallelepiped are the six outer walls of the battery cabinet 2. Specifically, as shown in FIG2 , a first direction X along the coordinate axis X in the present embodiment is the length direction of the battery cabinet 2, and the two walls of the battery cabinet 2 perpendicular to the length direction are referred to as the front wall and the rear wall, respectively, and can also be defined as the front and rear of the battery cabinet 2. A second direction Y along the coordinate axis Y in the present embodiment is the width direction of the battery cabinet 2, and the two walls of the battery cabinet 2 perpendicular to the width direction are referred to as the left wall and the right wall, respectively, and can also be defined as the left and right of the battery cabinet 2. A third direction Z along the coordinate axis Z in the present embodiment is the height direction of the battery cabinet 2, and the two walls of the battery cabinet 2 perpendicular to the height direction are referred to as the top wall and the bottom wall, respectively, and can also be defined as the top and bottom of the battery cabinet 2.

[0067] As shown in FIG2 , the shape of the support member 30 in the embodiment of the present application can be configured according to actual needs. For example, the cross-section of the support member 30 perpendicular to the first direction X can be L-shaped, and the side panels of the L-shaped support member 30 along the third direction Z are fixed to the left or right wall of the battery cabinet 2. For another example, the support member 30 can be configured as a thin plate extending along the first direction X and perpendicular to the third direction Z, as an example, and the embodiment of the present application is not limited to this. It should be understood that the L-shaped support member 30 can be fixed to the battery cabinet 2 using an adhesive, bolts, or welding, as an example, and the embodiment of the present application is not limited to this.

[0068] It should also be understood that the carrying component 30 in the embodiment of the present application can be a bracket in the battery cabinet 2 for carrying the box 20, or can be other mechanical devices for transporting the box 20 into the battery cabinet 2, as an example, and the embodiment of the present application is not limited to this. The carrying component 30 in the embodiment of the present application can also be called a battery bracket, battery bracket, carrying bracket, carrying bracket, or carrying member.

[0069] In some embodiments, the box 20 of the battery 100 in the battery cabinet 2 in the embodiment of the present application can be used to accommodate the vehicle's operating power supply, which can be used for the vehicle's circuit system, for example, for the vehicle's starting, navigation and operating power requirements.

[0070] It should be understood that the technical solutions described in the embodiments of this application are applicable to energy storage containers of various types and sizes. An energy storage container is a relatively highly integrated energy storage device. For example, the energy storage container can be a standard 40-foot or 20-foot container, or a custom container with a customized size.

[0071] Specifically, the energy storage container can be a regular rectangular parallelepiped structure, facilitating its secure placement and transportation. The interior of the energy storage container can be a hollow structure, which can include a battery compartment to facilitate the placement of multiple batteries 100. Furthermore, in addition to the battery compartment, the interior of the energy storage container can be divided into multiple functional compartments based on actual needs. Each functional compartment houses other functional equipment components that manage or assist in the operation of the multiple batteries 100, such as a convergence component, a main control component, a thermal management component, and so on.

[0072] The battery 100 described above can also be referred to as an electrical box, which includes a box body and one or more battery cells enclosed by the box body. Optionally, the battery cells housed in the energy storage container 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., which are not limited in this embodiment of the application. The battery cells may be cylindrical, flat, rectangular, or in other shapes, which are not limited in this embodiment of the application.

[0073] Optionally, the multiple batteries 100 arranged in the battery compartment can be connected in series, in parallel, or in series and parallel.

[0074] Figure 3 shows a schematic diagram of a battery 100 and a supporting component 30 provided in an embodiment of the present application. As shown in Figure 3, a mounting member 23 is provided on the first surface 22 of the first wall 21 of the housing 20 of the battery 100 in the embodiment of the present application. The coefficient of friction between the mounting member 23 and the supporting surface 31 of the supporting component 30 is less than the coefficient of friction between the first surface 22 and the supporting surface 31. When the housing 20 is supported on the supporting surface 31, the first surface 22 faces the supporting surface 31 of the supporting component 30.

[0075] It should be understood that the shape of the case 20 of the battery 100 in the embodiment of the present application can be set according to the actual application. For example, the case 20 of the battery 100 can be a polyhedron structure, and the polyhedron structure can be formed by a plurality of walls. Therefore, the case 20 of the battery 100 can include a plurality of walls. Among them, when the case 20 of the battery 100 is supported on the supporting surface 31 of the supporting component 30, the first wall 21 of the case 20 of the battery 100 faces the supporting surface 31 of the supporting component 30. As an example, the first wall 21 can be any wall of the case 20 of the battery 100. For example, the first wall 21 can be the wall with the smallest area of ​​the case 20 of the battery 100; or, the first wall 21 can also be the wall with the largest area of ​​the case 20 of the battery 100. The embodiment of the present application is not limited to this.

[0076] In some embodiments, the first wall 21 may be a bottom wall of the box 20 of the battery 100 .

[0077] Specifically, in the embodiment of the present application, the first surface 22 is at least a portion of the first wall 21. The shape of the first surface 22 can be set according to actual needs, and the mounting member 23 is disposed on the first surface 22. For example, the shape of the first surface 22 can be set accordingly based on the shape of the mounting member 23. For example, the shape of the first surface 22 can be rectangular, square, polygonal, etc., which is not limited in the embodiment of the present application.

[0078] It should be understood that the friction coefficient μ in the embodiments of the present application refers to the ratio of the friction force F between two surfaces to the normal force G acting on one surface, that is, μ = F / G. The friction coefficient is related to the roughness of the surface and has nothing to do with the size of the contact area. Specifically, in the embodiment of the present application, when the housing 20 of the battery 100 is not provided with the mounting member 23, the method for measuring the friction coefficient μ between the mounting member 23 of the battery 100 and the bearing surface 31 of the bearing member 30 is as follows: first, the weight G of the battery 100 is measured; second, the battery 100 is placed on the bearing member 30 of the battery cabinet 2, and the battery cabinet 2 is placed on a horizontal surface. The battery 100 is uniformly pulled by a pulling device to cause relative movement between the battery 100 and the bearing member 30. At this time, the value of the pulling force f generated by the pulling device is read. The pulling force f is parallel to the first direction X and can achieve uniform motion between the battery 100 and the bearing member 30; then, the friction coefficient μ between the battery 100 and the bearing surface 31 of the bearing member 30 is determined by calculating the ratio of the pulling force f to the weight G of the battery 100. The friction coefficient μ is the dynamic friction coefficient.

[0079] It should also be understood that the method for determining the friction coefficient between the first surface 22 of the battery 100 without the mounting member 23 and the bearing surface 31 of the bearing member 30 is similar to the above method. The mounting member 23 can be removed from the battery 100 first, and the remaining measurement steps refer to the above method. For the sake of brevity, they will not be repeated here.

[0080] Therefore, in the embodiment of the present application, since the coefficient of friction between the mounting member 23 and the bearing surface 31 of the bearing component 30 is relatively low, on the one hand, compared to the case where the mounting member 23 is not provided on the case 20, and the relative movement between the first surface 22 and the bearing surface 31 of the bearing component 30 is performed, the resistance generated during the relative movement between the mounting member 23 and the bearing surface 31 of the bearing component 30 during the installation of the case 20 is relatively small, which facilitates the rapid installation and removal of the case 23 on the bearing component 30. On the other hand, since the coefficient of friction between the mounting member 23 and the bearing surface 31 of the bearing component 30 is relatively low, the surface wear of the case 20 and the bearing component 30 is reduced, which can reduce damage to the metal coating of the case 20 and the bearing component 30 of the battery 100, and can extend the service life of the case 20 and the bearing component 30. At the same time, this method has a simple structure and low cost.

[0081] It should be understood that in the embodiment of the present application, as shown in FIG3 , the mounting member 23 and the first surface 22 can be fixed in a variety of ways. For example, the mounting member 23 and the first surface 22 can be fixed by an adhesive. For example, in the embodiment of the present application, the mounting member 23 can be fixed to the first surface 22 of the first wall 21 of the battery case 20 by double-sided tape or structural adhesive without damaging the first wall 21 of the battery case 20. This fixing method is simple and reliable, and helps reduce processing costs.

[0082] For example, the mounting member 23 can be secured to the first wall 21 via bolts 25. FIG4 illustrates a schematic cross-sectional view of the battery case 20 of the battery 100 according to an embodiment of the present application. For example, the battery case 20 of FIG4 can be the battery case 20 of FIG3 . The cross-section shown in FIG4 is a cross-sectional view of the battery case 20 of the battery 100 taken perpendicularly along a first direction X. For example, the first direction X can be parallel to the plane of the first wall 21. FIG5 illustrates an enlarged schematic view of section A in FIG4 . As shown in FIG4 and FIG5 , in the embodiment of the present application, the mounting member 23 is secured to the first wall 21 via bolts 25. The bolts 25 extend through the mounting member 23 and are partially contained within the first wall 21. This further enhances the securing effect between the mounting member 23 and the first surface 22 of the first wall 21 of the case 20, thereby reducing the possibility of the mounting member 23 slipping or falling off the first wall 21 of the case 20.

[0083] It should also be understood that when the mounting member 23 and the first wall 21 are fixed by the bolt 25, the bolt 25 does not protrude from the surface of the mounting member 23 that contacts the bearing member 30. Thus, in the embodiment of the present application, by arranging the bolt 25 so as not to protrude from the surface of the mounting member 23 that contacts the bearing member 30, that is, during the installation and removal of the box body 20 on the bearing member 30, damage to the surface coating of the bearing member caused by the relative movement between the bolt and the bearing surface of the bearing member is effectively reduced, thereby affecting the installation and removal speed of the box body on the bearing member.

[0084] Optionally, in one embodiment of the present application, the coefficient of friction between the mounting member 23 and the bearing surface 31 of the bearing member 30 is less than or equal to 0.3. This can reduce friction between the housing 20 and the bearing surface 31 of the bearing member 30 during installation and removal from the bearing member 30, thereby reducing resistance generated during relative movement between the housing 20 and the bearing member 30, thereby improving the efficiency of installation and removal of the housing 20 from the bearing member 30. In one possible implementation, a material with a friction coefficient of less than or equal to 0.3 can be selected as the mounting member 23. For example, the coefficient of friction between the mounting member 23 and the bearing surface 31 of the bearing member 30 in the embodiment of the present application may be 0.01, 0.02, 0.04, 0.06, 0.08, 0.10, 0.12, 0.14, 0.16, 0.18, 0.20, 0.22, 0.24, 0.28 or 0.30, or its value is within the range obtained by combining any two of the above values.

[0085] Optionally, in one embodiment of the present application, the material of the mounting member 23 may be set to plastic. In this embodiment of the present application, due to the self-lubricating properties of plastic and a low coefficient of friction, setting the mounting member 23 to plastic helps reduce the friction between the battery 100 housing 20 and the bearing surface 31 of the bearing component 30, thereby reducing the resistance generated during relative movement between the housing 20 and the bearing component 30, thereby improving the efficiency of installing and removing the battery 100 housing 20 from the bearing component 30. At the same time, plastic is easy to process and purchase, and the processing cost is low.

[0086] Specifically, in the embodiment of the present application, the material of the mounting member 23 may include: polyoxymethylene, polypropylene, polycarbonate or polyamide. Thus, by using polyoxymethylene, polypropylene, polycarbonate or polyamide, which has lubricity and a low friction coefficient, as the material for the mounting member 23, it is beneficial to reduce the friction between the box 20 of the battery 100 and the bearing surface 31 of the bearing member 30 during the installation and removal process of the box 20 on the bearing member 30, thereby reducing the resistance generated when the box 20 and the bearing member 30 move relative to each other, thereby facilitating the pushing and pulling of the box 20, improving the efficiency of the installation and removal of the box 20, and at the same time, being low in cost and easy to process and purchase.

[0087] Optionally, in one embodiment of the present application, as shown in Figure 3, at least two mounting members 23 may be spaced apart on the first surface 22 of the first wall 21 of the case 20 of the battery 100. In this way, in the embodiment of the present application, multiple mounting members 23 may be spaced apart on the first surface 22 of the first wall 21 of the case 20 of the battery 100 according to actual needs, which is beneficial to increase the contact area between the case 20 of the battery 100 and the bearing surface 31 of the bearing component 30, so that the weight of the case 20 of the battery 100 is evenly distributed, and the force structure is improved to avoid the situation where the mounting member 23 is difficult to support the case 20 due to the large weight of the case 20, so that the first wall 21 of the case 20 contacts the bearing surface 31 of the bearing component 30.

[0088] Optionally, in one embodiment of the present application, as shown in FIG4 , the mounting member 23 in the embodiment of the present application may also be provided at an edge position of the first wall 21 of the case 20. In the embodiment of the present application, when the case 20 is installed on and removed from the support member 30, since the edge position of the case 20 of the battery 100 is prone to friction or collision with the support member 30, by providing the mounting member 23 at the edge position of the first wall 21 of the case 20 of the battery 100, the wear between the edge position of the first wall 21 of the case 20 of the battery 100 and the support member 30 can be reduced, thereby improving the safety of the case 20 of the battery 100 during installation and removal from the support member 30.

[0089] In one possible implementation, as shown in FIG3 , the mounting member 23 in the embodiment of the present application can be configured as a strip-shaped structure extending along a first direction X, where the first direction X is parallel to the first surface 22. When the case 20 is placed on the support member 30, the first direction X is parallel to the relative movement direction of the case 20 and the support member 30. Thus, in the embodiment of the present application, by configuring the mounting member 23 as a strip-shaped structure extending along the first direction X, and the first direction X being parallel to the relative movement direction of the case 20 and the support member 30, the case 20 of the battery 100 can be pushed into and pulled out of the support member 30 more quickly, which helps improve the efficiency of installing and removing the case 20 of the battery 100 from the support member 30. Furthermore, this method has a simple structure and is easy to process.

[0090] In the embodiment of the present application, when the battery 100 housing 20 deviates from the installation and locking position within the battery cabinet 2 during installation and removal, requiring position calibration, or when the housing 20 is subjected to external impact during transportation, the mounting member 23 will inevitably be subjected to lateral friction along the second direction Y. The second direction Y is parallel to the first surface 22 and perpendicular to the first direction X. The mounting member 23 has a relatively weak ability to resist this lateral friction in the second direction Y, which can easily cause the mounting member 23 to slide or fall off in the second direction Y, affecting the efficiency of installation and removal of the housing 20 and further reducing the reliability of the housing 20. Therefore, it is possible to consider providing a limiting member on the first wall 21 of the battery 100 housing 20 to limit the sliding or falling off of the mounting member 23 in the second direction Y.

[0091] FIG6 shows another cross-sectional schematic diagram of the casing 20 of the battery 100 according to an embodiment of the present application. For example, the casing 20 of the battery 100 shown in FIG6 may be the casing 20 of the battery 100 shown in FIG3 . The cross section shown in FIG6 is a cross section of the casing 20 of the battery 100 taken perpendicular to the first direction X. FIG7 to FIG11 respectively show an enlarged schematic diagram of section B in FIG6 .

[0092] As shown in Figures 6 to 11, a limiting structure 24 is provided on the first wall 21 of the box body 20 of the battery 100 in the embodiment of the present application. The limiting structure 24 is used to limit the movement of the mounting member 23 in the second direction Y. The second direction Y is parallel to the first surface 22 and perpendicular to the first direction X. By providing the limiting structure 24 for limiting the movement of the mounting member 23 in the second direction Y on the first wall 21 of the box body 20, the contact between the first wall 21 of the box body 20 and the bearing surface 31 of the bearing member 30 caused by sliding or falling off of the mounting member 23 in the second direction Y is reduced, thereby facilitating the installation and removal speed of the mounting member 23 on the bearing member 30.

[0093] Optionally, in one embodiment of the present application, as shown in Figure 7, the above-mentioned limiting structure 24 is configured as a protruding structure 241 protruding from the first surface 22 of the first wall 21 of the box body 20 to reduce the sliding of the mounting member 23 along the second direction Y. At the same time, the protruding structure 241 is arranged on the outer surface of the box body 20, which can reduce the internal space of the box body 20 occupied by the battery 100 and improve the space utilization of the box body 20.

[0094] It should be understood that the cross-sectional shape of the protruding structure 241 in the embodiment of the present application along the direction perpendicular to the first direction X can be set according to actual needs. For example, it can be semicircular, square or diamond-shaped, etc. As an example, the embodiment of the present application does not limit this.

[0095] Optionally, in one embodiment of the present application, the protruding structure 241 extends along the first direction X. In the embodiment of the present application, by setting the protruding structure 241 of the limiting structure 24 to extend along the first direction X, the fixing effect of the protruding structure 241 on the mounting member 23 can be improved, thereby reducing the sliding or falling off of the mounting member 23 in the second direction Y. At the same time, the structure is simple and easy to process.

[0096] It should be understood that the protruding structure 241 protruding from the first surface 22 of the box body 20 in the embodiment of the present application can be flexibly set according to actual needs. For example, the mounting part 23 on the box body 20 can be provided with a protruding structure 241 on both sides of the second direction Y. For another example, the mounting part 23 on the box body 20 can be provided with a protruding structure 241 on the left or right side of the second direction Y.

[0097] Optionally, in one embodiment of the present application, as shown in Figures 7, 9, and 10, the mounting member 23 on the case 20 is provided with protruding structures 241 on both sides of the second direction Y. Thus, in the second direction Y, by providing a protruding structure 241 on the left and right sides of the mounting member 23 on the first wall 21 of the case 20, the mounting member 23 is confined between the two protruding structures 241, thereby further improving the limiting effect on the mounting member 23, thereby facilitating the reduction of sliding of the mounting member 23 on the first wall 21 of the case 20 of the battery 100 in the second direction Y, and improving the efficiency of installing and removing the case 20 of the battery 100 on the supporting component 30.

[0098] It should be understood that, unlike the embodiment shown above in which the protruding structure 241 is provided on one or both sides of the mounting member 23 on the housing 20 along the second direction Y, the positional relationship between the mounting member 23 and the protruding structure 241 can be flexibly set. For example, as shown in FIG8 , a groove structure is provided on the surface of the mounting member 23 along the first direction X, and at least a portion of the protruding structure 241 on the first wall 21 of the housing 20 is accommodated in the groove to limit the movement of the mounting member 24 in the second direction Y, thereby reducing the sliding or falling off of the mounting member 23 in the second direction Y. At the same time, the protruding structure 241 can also be effectively prevented from contacting the bearing surface 31 of the bearing component 30, thereby improving the efficiency of installing and removing the housing 20 of the battery 100 from the bearing component 30.

[0099] Specifically, in the embodiment of the present application, in the third direction Z, the size of the protruding structure 241 is smaller than the size of the mounting member 23. The third direction Z is perpendicular to the first surface 22 of the first wall 21 of the box body 20. At the same time, the third direction Z is perpendicular to the first direction X and the second direction Y. In the embodiment of the present application, since the friction coefficient of the material of the protruding structure 241 is usually large, when the protruding structure 241 contacts the bearing surface 31 of the bearing component 30, the resistance encountered by the box body 20 during installation and removal on the bearing component 30 will increase, thereby reducing the installation and removal rate of the box body 20 on the bearing component 30. By setting the size of the protruding structure 241 in the third direction Z to be smaller than the size of the mounting part 23 in the third direction Z, the problem of low installation speed caused by the contact between the protruding structure 241 and the bearing surface 31 of the bearing component 30 can be effectively reduced, thereby increasing the installation and removal rate of the box body 20 on the bearing component 30, and at the same time, it can also reduce the damage to the surface coating of the box body 20 and the bearing component 30 caused by rigid friction between the protruding structure 241 and the bearing component 30.

[0100] Optionally, in some embodiments, as shown in FIG9 and FIG10 , the raised structure 241 mentioned in the embodiments of the present application may include a main body 241a and an extension 241b. The main body 241a extends along the third direction Z, and the extension 241b is connected to an end of the main body 241a that is away from the first surface 22 of the first wall 21 of the box 20 of the battery 100 and extends toward the mounting member 23. In this way, the extension 241b provided on the raised structure 241 can fix the mounting member 23 in the second direction Y to limit the movement of the mounting member 23 in the second direction Y, which can further enhance the retaining effect of the raised structure 241 on the mounting member 23.

[0101] It should be understood that in the embodiment of the present application, the shape of the cross section of the mounting member 23 perpendicular to the first direction X can be processed and manufactured according to the shape of the cross section of the above-mentioned protruding structure 241 along the first direction X, so that the mounting member 23 can be embedded in the protruding structure 241.

[0102] Optionally, in some embodiments, as shown in Figures 9 and 10, the protruding structures 241 on both sides of the mounting member 23 in the embodiment of the present application in the second direction Y form a receiving groove 242 with the first surface 22 on the first wall 21 of the box body 20, and the opening 242a of the receiving groove 242 is arranged opposite to the first surface 22, and a portion of the mounting member 23 is received in the receiving groove 242.

[0103] Specifically, as shown in Figure 9, the protruding structure 241 includes a main portion 241a extending along the third direction Z, and an extension portion 241b connected to the main portion 241a and extending along the second direction Y toward the mounting member 23. The extension portion 241b is perpendicular to the main portion 241a along a cross section perpendicular to the first direction X. The protruding structure 241 and the first surface 22 of the first wall 21 enclose a receiving groove 242, within which the mounting member 23 is partially received. Furthermore, grooves are provided on both sides of the mounting member 23 in the second direction Y, within which the extension portion 241b is partially received.

[0104] In some embodiments, the size of the portion of the mounting member 23 accommodated in the accommodating groove 242 is larger than the size of the opening 242 a of the accommodating groove 242 , so as to improve the stability of the connection between the mounting member 23 and the first wall 21 .

[0105] In this way, in the embodiment of the present application, a receiving groove 242 is formed by the protruding structures 241 on both sides of the mounting member 23 in the second direction Y and the first surface 22 of the box body 20 to fix the mounting member 23, which can effectively reduce the sliding and falling off of the mounting member 23 in the second direction Y. Secondly, by arranging that part of the mounting member 23 is accommodated in the receiving groove 242, the contact between the protruding structure 241 and the bearing surface 31 of the bearing component 30 can be prevented, thereby reducing damage to the surface coating of the box body 20 and the bearing component 30.

[0106] Alternatively, in some embodiments, as shown in FIG11 , the limiting structure 24 in the embodiment of the present application is a receiving groove 242 recessed in the first surface 22, with an opening 242a of the receiving groove 242 flush with the first surface 22, and the mounting member 23 is partially received in the receiving groove 242. Thus, by configuring the limiting structure 24 as the receiving groove 242 recessed in the first surface 22 of the first wall 21 of the housing 20, the mounting member 23 can be restricted from sliding or falling off in the second direction Y. Furthermore, since the mounting member 23 is partially recessed in the receiving groove 242, the problem of slow installation speed caused by the large resistance during relative movement between the first wall 21 of the housing 20 and the supporting member 30 can be reduced, and wear on the surfaces of the housing 20 and the supporting member 30 can be prevented. Furthermore, the designed height of the housing 20 of the battery 100 in the third direction Z can be reduced, thereby saving space reserved for the housing 20 in the battery cabinet 2 and improving the space utilization of the battery cabinet 2.

[0107] It should be understood that in the embodiment of the present application, in the second direction Y, the size of the above-mentioned opening 242a is smaller than the size of the bottom wall 243 of the accommodating groove 242, and the bottom wall 243 is the wall of the accommodating groove 242 opposite to the opening 242a. In this way, by setting the size of the opening 242a of the accommodating groove 242 to be smaller than the size of the bottom wall 243 of the accommodating groove 242, so that the mounting member 23 can be fixed in the accommodating groove 242 and the sliding or falling off of the mounting member in the second direction Y and the third direction Z is reduced, it is beneficial to improve the limiting effect of the limiting structure 24 on the mounting member 23.

[0108] It should be understood that in the embodiment of the present application, the shape of the cross section of the accommodating groove 242 in the above embodiment along the first direction X can be designed according to actual needs. For example, the cross section of the accommodating groove 242 in the embodiment of the present application along the first direction X can also be any shape, such as an arc, a polygon, etc. As an example, the embodiment of the present application does not limit this.

[0109] Optionally, in some embodiments, the cross-section of the accommodating groove 242 perpendicular to the first direction X is an inverted trapezoid. In this way, by setting the cross-section of the accommodating groove 242 perpendicular to the first direction X to an inverted trapezoid, the sliding of the mounting member 23 in the second direction Y and the third direction Z can be limited. At the same time, since this solution has a simple design structure, is easy to form, and is easy to process, it can reduce manufacturing costs.

[0110] Optionally, in the embodiment of the present application, the above-mentioned limiting structure 24 is integrally formed with the box body 20 to improve the efficiency of processing and assembly of the box body 20. At the same time, during the installation and removal of the box body 20 on the support component 30, the reduction in installation and removal efficiency caused by sliding or falling off between the limiting structure 24 and the first wall 21 of the box body 20 can be reduced. Specifically, the limiting structure 24 and the box body 20 can be integrally formed by mechanical processing or extrusion molding, as an example, and the embodiment of the present application is not limited to this.

[0111] In some embodiments, the limiting structure 24 and the box body 20 in the embodiment of the present application can be processed and manufactured by separate molding. For example, the limiting structure 24 can be fixed to the first wall 21 of the box body 20 by adhesive or bolt connection.

[0112] In the embodiment of the present application, during the installation and removal of the housing 20, in order to facilitate moving the housing 20 to a suitable fixed position, it is generally necessary to install a guide member on the first wall 21 of the housing 20. Figure 12 shows a schematic structural diagram of an example of the housing 20 of the battery 100 according to the embodiment of the present application. For example, the housing 20 of the battery 100 shown in Figure 12 can be the housing 20 of the battery 100 shown in Figure 3. Figure 13 is an enlarged schematic diagram of portion C of the housing 20 of the battery 100 in Figure 12, and Figure 14 is an enlarged schematic diagram of portion D of the housing 20 of the battery 100 in Figure 12.

[0113] In the embodiment of the present application, as shown in Figures 12 to 14, guide portions 231 are provided at both ends of the mounting member 23 in the first direction X. As the dimension along the third direction Z between the guide slope of the guide portion 231 and the first surface 22 gradually decreases as the mounting member 23 moves away from the center, the guide slope is the surface of the guide portion 231 away from the first surface 22, and the third direction Z is perpendicular to the first surface 22. Specifically, the guide slope of the guide portion 231 may also refer to the surface of the guide portion 231 that is disposed opposite the first surface 22 of the housing 20. Thus, by providing guide portions 231 at both ends of the mounting member 23 in the first direction Z, the housing 20 can be pushed in and pulled out in a specific direction, thereby improving the accuracy and efficiency of installing and removing the housing 20 of the battery 100 on the supporting component 30.

[0114] Optionally, in some embodiments, the size of the mounting member 23 in the embodiment of the present application is smaller than the size of the first wall 21 in the first direction X. The first direction X is parallel to the first surface 22. When the box 20 is placed on the support member 30, the first direction X is parallel to the relative movement direction of the box 20 and the support member 30. Thus, in the embodiment of the present application, since the space reserved for the box 20 of the battery 100 in the battery cabinet 2 is limited, by setting the size of the mounting member 23 along the first direction X to be smaller than the size of the first wall 21 of the box 20 along the first direction X, the problem of the box 20 being difficult to smoothly push into the battery cabinet 2 due to the excessive size of the mounting member 23, that is, a portion of the box 20 is exposed outside the battery cabinet 2, can be alleviated, and processing costs can also be reduced.

[0115] Optionally, an embodiment of the present application provides a battery 100 , including a battery cell and a case 20 of the battery 100 , wherein the battery cell is accommodated in the case 20 of the battery 100 .

[0116] Optionally, an embodiment of the present application provides an electric device, comprising the above-mentioned battery 100, where the battery 100 is used to supply power to the electric device.

[0117] Optionally, an embodiment of the present application provides an energy storage system, including the above-mentioned battery 100 and a supporting component 30, wherein the supporting component 30 is used to support the above-mentioned battery 100.

[0118] It should be understood that the relevant parts in the various embodiments of the present application can refer to each other and will not be repeated for the sake of brevity.

[0119] Although the present application has been described with reference to preferred embodiments, various modifications may be made thereto and components may be substituted with equivalents without departing from the scope of the present application. In particular, the various technical features described in the various embodiments may be combined in any manner as long as there are no structural conflicts. The present application is not limited to the specific embodiments disclosed herein, but encompasses all technical solutions within the scope of the claims.

Claims

1. A box (20) of a battery (100), characterized in that: A mounting member (23) is provided on the first surface (22) of the first wall (21) of the box body (20); the friction coefficient between the mounting member (23) and the bearing surface (31) of the bearing component (30) is smaller than the friction coefficient between the first surface (22) and the bearing surface (31); and when the box body (20) is supported on the bearing surface (31), the first surface (22) faces the bearing surface (31).

2. The box according to claim 1, characterized in that The friction coefficient between the mounting member (23) and the bearing surface (31) of the bearing component (30) is less than or equal to 0.

3.

3. The box (20) according to claim 1 or 2, characterized in that: The material of the mounting member (23) includes plastic.

4. The box (20) according to any one of claims 1 to 3, characterized in that: The material of the mounting member (23) includes: polyoxymethylene, polypropylene, polycarbonate or polyamide.

5. The box (20) according to any one of claims 1 to 4, characterized in that: At least two mounting members (23) are arranged on the first surface (22) at intervals.

6. The box (20) according to any one of claims 1 to 5, characterized in that: The mounting member (23) is arranged on the edge of the first wall (21).

7. The box (20) according to any one of claims 1 to 6, characterized in that: The mounting member (23) is a strip-shaped structure extending along a first direction, the first direction being parallel to the first surface (22), and when the box (20) is placed toward the bearing component (30), the first direction is parallel to the relative movement direction of the box (20) and the bearing component (30).

8. The box (20) according to any one of claims 1 to 7, characterized in that: The first wall (21) is further provided with a limiting structure (24), and the limiting structure (24) is used to limit the movement of the mounting member (23) in a second direction, wherein the second direction is parallel to the first surface (22) and perpendicular to the first direction.

9. The box (20) according to claim 8, characterized in that The limiting structure (24) is a protruding structure (241) protruding from the first surface (22).

10. The box (20) according to claim 9, characterized in that The protruding structure (241) extends along the first direction.

11. The box (20) according to claim 9 or 10, characterized in that: The mounting member (23) on the box body (20) is provided with the protruding structures (241) on both sides in the second direction.

12. The box (20) according to any one of claims 9 to 11, characterized in that: In a third direction, the size of the protruding structure (241) is smaller than the size of the mounting member (23), and the third direction is perpendicular to the first surface (22).

13. The box (20) according to claim 12, characterized in that The protruding structure (241) comprises a main body portion (241a) and an extension portion (241b), wherein the main body portion (241a) extends along the third direction, and the extension portion (241b) is connected to an end of the main body portion (241a) away from the first surface (21) and extends in a direction close to the mounting member (23).

14. The box (20) according to any one of claims 9 to 13, characterized in that The protruding structures (241) on both sides of the mounting member (23) in the second direction form a receiving groove (242) with the first surface (22); an opening (242a) of the receiving groove (242) is arranged opposite to the first surface (22); and a portion of the mounting member (23) is received in the receiving groove (242).

15. The box (20) according to claim 8, characterized in that The limiting structure (24) is a receiving groove (242) recessed in the first surface (22), an opening (242a) of the receiving groove (242) is flush with the first surface (22), and the mounting member (23) is partially received in the receiving groove (242).

16. The box (20) according to claim 14 or 15, characterized in that: In the second direction, the size of the opening (242a) is smaller than the size of the bottom wall (243) of the accommodating groove (242), and the bottom wall (243) is the wall of the accommodating groove (242) opposite to the opening (242a).

17. The box (20) according to any one of claims 14 to 16, characterized in that The cross section of the accommodating groove (242) perpendicular to the first direction is in the shape of an inverted trapezoid.

18. The box (20) according to any one of claims 8 to 17, characterized in that The limiting structure (24) and the box body (20) are integrally formed.

19. The box (20) according to any one of claims 1 to 18, characterized in that The mounting member (23) is fixed to the first surface (22) by an adhesive.

20. The box (20) according to any one of claims 1 to 19, characterized in that The mounting member (23) is connected to the first wall (21) via a bolt (25), and the bolt (25) passes through the mounting member (23) and is partially accommodated in the first wall (21).

21. The box (20) according to claim 20, characterized in that The bolt (25) does not protrude from the surface of the mounting member (23) that contacts the bearing component (30).

22. The box (20) according to any one of claims 7 to 21, characterized in that Guide portions (231) are provided at both ends of the mounting member (23) in the first direction, and along a direction away from the center of the mounting member (23), the dimension between the guide slope of the guide portion (231) and the first surface (22) along the third direction gradually decreases, the guide slope is the surface of the guide portion (231) away from the first surface (22), and the third direction is perpendicular to the first surface (22).

23. The box (20) according to any one of claims 1 to 22, characterized in that In a first direction, the size of the mounting member (23) is smaller than the size of the first wall (21), the first direction is parallel to the first surface (22), and when the box (20) is placed toward the bearing component (30), the first direction is parallel to the relative movement direction of the box (20) and the bearing component (30).

24. A battery (100), comprising: Battery cells; as well as According to the box (20) according to any one of claims 1 to 23, the battery cells are accommodated in the box (20).

25. An electric device comprising the battery (100) according to claim 24, wherein the battery (100) is used to supply power to the electric device.

26. An energy storage system comprising: The battery (100) according to claim 24.

27. The energy storage system according to claim 26, characterized in that The energy storage system further includes: The carrying component (30) is used for carrying the battery (100).

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