Battery case body, battery and electrical apparatus

Abstract

A battery case body, a battery (100) and an electrical apparatus (200). The battery case body is provided with an accommodation space (13), and the battery case body comprises: a bottom plate (14) provided with a first through hole (15); and a mounting device (30) comprising a mounting block (31) and a connecting structure (32), the mounting block (31) being arranged on the side of the bottom plate (14) facing the accommodation space (13), the mounting block (31) being aligned with the first through hole (15), the connecting structure (32) passing through the first through hole (15) and one end thereof being connected to the mounting block (31), and the other end of the connecting structure (32) being used for connecting to a fixation mounting body. The solution solves the problem that each mounting part of existing battery packs bears complex loads and stress such that connection between each mounting part and a vehicle body chassis is unstable.

Description

Battery box, battery and electrical equipment

[0001] This application claims priority to the Chinese patent application filed with the China Patent Office on November 16, 2023, with application number 202311532985.8 and invention name “Battery case, battery and electrical equipment”, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present application belongs to the technical field of battery installation, and in particular relates to a battery box, a battery and an electrical device. Background Art

[0003] In related technologies, the outer wall of the battery pack's battery case is equipped with circumferentially distributed mounting portions, each of which is fixedly connected to the electric vehicle's chassis. Each mounting portion is spaced apart from the battery pack's center of gravity. From a mechanical perspective, the load stresses borne by each mounting portion are complex. During the operation of the electric vehicle, the complex load stresses borne by each mounting portion can easily lead to unstable connections between the mounting portion and the chassis. In severe cases, the connection between the mounting portion and the chassis can even fail, compromising the safety of the electric vehicle.

[0004] Summary of the Invention

[0005] The purpose of the embodiments of the present application is to provide a battery box, a battery and an electrical device, including but not limited to solving the problem that the various mounting parts of the existing battery are easily subject to complex load stresses, which leads to unstable connections between the various mounting parts and the vehicle chassis.

[0006] The technical solution adopted in the embodiment of this application is:

[0007] According to a first aspect of the present application, a battery box is provided, having a storage space, including:

[0008] A bottom plate having a first through hole;

[0009] The mounting device includes a mounting block and a connecting structure. The mounting block is arranged on the side of the base plate facing the accommodating space. The mounting block is aligned with the first through hole. The connecting structure passes through the first through hole and one end is connected to the mounting block. The other end of the connecting structure is used to connect to the fixed mounting body.

[0010] The battery case provided by the embodiment of the present application is used to assemble batteries, and the battery case uses a mounting device located in the middle to connect to the fixed installation body. At the same time, multiple mounting parts on the circumferential side walls of the battery case are also fixedly connected to the fixed installation body, thereby fixing the battery as a whole to the fixed installation body. In this way, compared with the related art in which the battery case is only fixedly connected to the fixed installation body by the mounting parts on the circumferential side walls of the battery case, the battery case provided by the embodiment of the present application can disperse the load stress of each mounting part through the mounting device located in the middle of the battery, improve the force condition of each mounting part, and improve the connection stability between the battery and the fixed installation body.

[0011] In some embodiments of the present application, the connection structure includes a mounting sleeve. The mounting block is provided with a second through-hole, which is arranged opposite the first through-hole. The mounting sleeve passes through the first through-hole and is installed in the second through-hole. The end of the mounting sleeve, which is away from the receiving space, is used to connect to the fixed mounting body. This allows the mounting sleeve to be inserted and installed on the mounting block conveniently and quickly, improving the assembly efficiency between the mounting sleeve and the mounting block.

[0012] In some embodiments of the present application, the connection structure further includes a connecting member connected to the mounting sleeve, the connecting member extending outside the base plate for connection to the fixed mounting body. The interlaced fit between the connecting member and the mounting sleeve facilitates assembly between the connecting member and the mounting sleeve, improving assembly efficiency.

[0013] In some embodiments of the present application, the mounting block is provided with two opposing first abutment structures and two opposing second abutment structures. The first arrangement direction of the two first abutment structures is perpendicular to the second arrangement direction of the two second abutment structures. The two first abutment structures are respectively used to abut against battery cells distributed along the first arrangement direction and adjacent to the mounting block, and the two second abutment structures are respectively used to abut against battery cells distributed along the second arrangement direction and adjacent to the mounting block. This stabilizes the placement of the mounting block within the accommodation space, and prevents the mounting block from slipping within the accommodation space.

[0014] In some embodiments of the present application, the first and / or second abutting structures are rod-shaped structures, with the ends of the rod-shaped structures being used to abut against the battery cells. Alternatively, in other embodiments of the present application, the first and / or second abutting structures are block-shaped structures, with the block-shaped structures having abutting side surfaces that conform to the side shapes of the battery cells. This stabilizes the placement of the mounting block within the accommodation space, preventing the mounting block from slipping within the accommodation space.

[0015] In some embodiments of the present application, the outer contour of the mounting block is the same as the outer contour of the battery cell, so that the placement of the mounting block in the accommodation space is stabilized and the mounting block will not slip in the accommodation space.

[0016] In some embodiments of the present application, the outer wall of the mounting sleeve is engaged with the wall of the second through hole. Specifically, in some embodiments of the present application, an insert is provided on the wall of the second through hole, and a groove is provided on the outer wall of the mounting sleeve to engage with the insert. The insert restrains the mounting sleeve to prevent it from falling out of the second through hole.

[0017] In some embodiments of the present application, there are multiple inserts, which are circumferentially arranged on the wall of the second through hole; or, the insert is annular and fixed to the wall of the second through hole. The insert is used to restrain the mounting sleeve to prevent the mounting sleeve from falling out of the second through hole.

[0018] In some embodiments of the present application, the mounting sleeve includes a first sleeve and a second sleeve. The first end of the first sleeve extends through the first through-hole, and the second end of the first sleeve is inserted into the second through-hole. The first sleeve has a stepped surface, and the second sleeve is connected to the second end of the first sleeve. A groove is formed between the end of the second sleeve and the stepped surface. This stabilizes the mounting sleeve on the mounting block and prevents the mounting sleeve from falling out of the second through-hole.

[0019] In some embodiments of the present application, the second end of the first sleeve is threadedly connected to the second sleeve. The threaded connection greatly improves the connection efficiency.

[0020] In some embodiments of the present application, a sealing ring and structural adhesive are provided between the first sleeve and the bottom plate to seal the first through-hole. The sealing ring and structural adhesive effectively prevent moisture from the external environment from penetrating through the first through-hole into the storage space of the battery case and corroding the battery cells and electrical components, thereby effectively protecting the internal components of the battery pack.

[0021] In some embodiments of the present application, a reinforcing rib is provided on the side of the bottom plate facing away from the storage space. The reinforcing rib has a mating hole that is directly opposite and connected to the first through hole. This can enhance the structural strength of the battery case and meet the assembly requirements for the battery case's installation strength and stability.

[0022] In some embodiments of the present application, the battery case includes multiple mounting devices evenly distributed on the bottom plate, which effectively improves the stress conditions of each mounting portion of the battery pack and enhances the connection stability between the battery pack and the fixed mounting body.

[0023] In some embodiments of the present application, the battery case includes a lower case and a case cover, which cover each other to form a storage space. The lower case is provided with multiple mounting portions along its circumference, which are used to connect to a fixed mounting body. The battery pack can distribute the load stress of each mounting portion through the mounting device located in the middle, improving the stress conditions of each mounting portion of the battery pack and enhancing the stability of the connection between the battery pack and the fixed mounting body.

[0024] According to a second aspect of the present application, a battery is provided. Specifically, the battery includes:

[0025] The battery case as described above; and

[0026] The battery cell is arranged in the accommodation space.

[0027] In some embodiments of the present application, the mounting block abuts against side walls of the battery cells surrounding the mounting block.

[0028] The battery provided in the embodiment of the present application is assembled using the aforementioned battery case, and the mounting device in the middle of the battery is connected to the fixed mounting body. At the same time, the multiple mounting portions on the circumferential side walls of the battery case are also fixedly connected to the fixed mounting body, thereby fixing the battery as a whole to the fixed mounting body. In this way, compared to the related art in which the battery case is fixedly connected to the fixed mounting body only by the mounting portions on the circumferential side walls of the battery case, the battery case provided in the embodiment of the present application can disperse the load stress of each mounting portion through the mounting device located in the middle of the battery, improve the force conditions of each mounting portion, and enhance the connection stability between the battery and the fixed mounting body.

[0029] According to a third aspect of the present application, an electrical device is provided, which specifically includes a fixed installation body and the aforementioned battery, wherein the battery is installed in the fixed installation body. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments or exemplary technical descriptions. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0031] FIG1 is a schematic diagram of the exploded structure of a battery according to an embodiment of the present application;

[0032] FIG2 is a schematic diagram of the three-dimensional structure of a mounting sleeve of a battery box of an embodiment of the present application;

[0033] FIG3 is a schematic top view of the battery structure according to an embodiment of the present application, wherein the cover has been removed;

[0034] FIG4 is a bottom view of the battery structure according to an embodiment of the present application, wherein the cover has been removed;

[0035] FIG5 is a schematic cross-sectional view of the structure along the AA direction in FIG3 ;

[0036] FIG6 is an enlarged structural diagram of point B in FIG5 ;

[0037] FIG7 is a partial cross-sectional view of a battery connected to a fixed installation body via a mounting device according to an embodiment of the present application, wherein the box cover has been removed;

[0038] FIG8 is a schematic structural diagram of an electrical device according to an embodiment of the present application.

[0039] Among them, the reference numerals in the figures are:

[0040] 100. Battery;

[0041] 10. Box shell; 11. Lower box body; 12. Box cover; 13. Accommodation space; 14. Bottom plate; 15. First through hole; 16. Mounting portion;

[0042] 20. Battery cells;

[0043] 30. Mounting device; 31. Mounting block; 311. Second through hole; 32. Connecting structure; 321. Mounting sleeve; 3211. First sleeve; 32110. Stepped surface; 32111. Annular protrusion; 3212. Second sleeve; 322. Connecting member; 33. Insert; 34. Sealing ring; 35. Structural adhesive; 351. First structural adhesive; 352. Second structural adhesive.

[0044] 40. Strengthening ribs;

[0045] 200, electrical equipment; 210, fixed installation body; 220, drive motor;

[0046] X, first arrangement direction; Y, second arrangement direction. DETAILED DESCRIPTION

[0047] In order to make the purpose, technical solutions and advantages of this application more clearly understood, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit this application.

[0048] It should be noted that when a component is referred to as being "fixed on" or "disposed on" another component, it may be directly on the other component or indirectly on the other component. When a component is referred to as being "connected to" another component, it may be directly or indirectly connected to the other component. The terms "upper", "lower", "left", "right", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of description and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on this application. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to the specific circumstances. The terms "first" and "second" are only used for the purpose of convenience of description and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features. "Multiple" means two or more, unless otherwise clearly and specifically defined.

[0049] Currently, market developments indicate that the application of power batteries, particularly lithium batteries, is becoming increasingly widespread (hereafter, lithium batteries will be collectively referred to as batteries). Batteries are not only used in energy storage systems such as hydropower, thermal power, wind power, and solar power plants, but are also widely used in electric vehicles such as electric bicycles, electric motorcycles, and electric vehicles, as well as in police equipment, military equipment, and aerospace. As battery applications continue to expand, market demand is also growing.

[0050] In the related art, in the process of assembling and producing batteries, the battery cells are first placed in the storage space of the battery box, and the individual battery cells are connected in series, in parallel or in a mixed manner according to the designed rated voltage of the battery through electrical components. Then the box cover and the lower box body are covered with each other to complete the battery assembly work (electrical components include but are not limited to circuit boards, terminal blocks, temperature sensors, etc.).

[0051] Furthermore, assembled batteries are widely used to provide power to electrical devices, including but not limited to mobile phones, tablets, laptops, electric toys, power tools, electric vehicles, electric cars, ships, and spacecraft. Electric toys include but are not limited to fixed or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys. Spacecraft include but are not limited to airplanes, rockets, space shuttles, and spacecraft.

[0052] In response to the booming development of new energy electric vehicles, assembled batteries are being used in electric vehicles to provide power for the electric vehicle's drive motors and other electrical appliances. In related technologies, the outer wall of the battery box is provided with circumferentially distributed mounting portions, which are fixedly connected to the crossbeams and / or longitudinal beams of the electric vehicle's chassis through each mounting portion, thereby fixing the battery to the chassis. In this way, the load stress of the battery is borne by each mounting portion of each battery box. Each mounting portion is located on the circumferential side wall of the battery box, and there is a distance between each mounting portion and the center of gravity of the battery. From a mechanical perspective, the load stress borne by each mounting portion is relatively complex. During the driving of the electric vehicle, it is easy to cause the connection between each mounting portion and the chassis to be unstable. In serious cases, it may even cause the connection between the mounting portion and the chassis to fail, affecting the driving safety of the electric vehicle.

[0053] Based on the above considerations, in order to solve the problem of unstable connection between the battery and the chassis of electric vehicles in the related art, the embodiment of the present application is designed to provide a new type of battery box designed with a mounting device located in the middle position. The battery box is used to assemble and produce batteries, and the batteries are applied to electric vehicles to power the drive motor and electrical appliances. When the battery is installed on the chassis of the electric vehicle, the battery is not only connected to the chassis through the mounting portion on the circumferential side wall of the battery box, but also connected to the chassis through the mounting device of the battery box in the middle position, thereby improving the load stress at each mounting position between the battery and the chassis, improving the stress conditions of each mounting position of the battery, and improving the stability of the connection between the battery and the chassis.

[0054] in:

[0055] The middle position of the battery generally refers to the area surrounded by the circumferential side walls of the battery. After the battery is installed, any position in the area that coincides with the vertical projection of the bottom plate of the lower box can be called the middle position of the battery.

[0056] A battery cell is the basic unit for realizing the mutual conversion of chemical energy and electrical energy. A battery cell includes components such as a shell, a battery cell, an electrolyte, a positive electrode current collector, and a negative electrode current collector. The battery cell is provided with a positive electrode ear and a negative electrode ear. The battery cell is installed in a shell, and the shell is filled with an electrolyte. The electrolyte infiltrates the battery cell. The positive electrode ear is formed into the positive terminal of the battery cell through the positive electrode current collector, and the negative electrode ear is formed into the negative terminal of the battery cell through the negative electrode current collector.

[0057] In order to illustrate the technical solution provided by this application, a detailed description is given below with reference to specific drawings and embodiments.

[0058] As shown in Figures 1 to 5, the battery 100 provided in the embodiment of the present application includes a battery case, which includes a housing 10, a mounting device 30, and a plurality of battery cells 20. The housing 10 is formed with a receiving space 13 and has a bottom plate 14. The bottom plate 14 is used to support the plurality of battery cells 20. That is, the plurality of battery cells 20 are arranged on the bottom plate 14 and located within the receiving space 13. The individual battery cells 20 are connected in series, in parallel, or in a hybrid manner according to the designed rated voltage of the battery through electrical components. The bottom plate 14 is provided with a first through hole 15. The mounting device 30 includes a mounting block 31 and a connecting structure 32. The mounting block 31 is arranged on the bottom plate 14 and located within the accommodating space 13. The mounting block 31 is opposite the first through-hole 15 and abuts against the side walls of the battery cells 20 surrounding it, thereby stably placing the mounting block 31 between the multiple battery cells 20 and preventing the mounting block 31 from slipping. The connecting structure 32 passes through the first through-hole 15 and is connected to the mounting block 31. The connecting structure 32 is used to connect to the fixed installation body 210. In addition, a plurality of mounting portions 16 are provided on the circumferential side of the housing 10. The mounting portions 16 are used to connect to the fixed installation body 210, thereby fixing the battery 100 to the fixed installation body 210.

[0059] The battery case provided by the embodiment of the present application uses a mounting device 30 located in the middle of the battery 100 to connect to the fixed installation body 210. At the same time, the multiple mounting portions 16 on the circumferential side walls of the housing 10 are also fixedly connected to the fixed installation body 210, thereby fixing the battery 100 to the fixed installation body 210. In this way, compared with the related art in which the battery is fixedly connected to the fixed installation body only by the mounting portions on the circumferential side walls of the battery case, the battery case provided by the embodiment of the present application can disperse the load stress of each mounting portion 16 through the mounting device 30 located in the middle of the battery 100, improve the force conditions of each mounting portion 16 of the battery 100, and enhance the connection stability between the battery 100 and the fixed installation body 210.

[0060] In some embodiments of the present application, as shown in Figures 2, 5, and 6, the connection structure 32 includes a mounting sleeve 321. To facilitate assembly of the mounting sleeve 321 onto the mounting block 31, the mounting block 31 is provided with a second through-hole 311, and the second through-hole 311 is disposed directly opposite the first through-hole 15. When assembling the mounting sleeve 321 onto the mounting block 31, the mounting sleeve 321 passes through the first through-hole 15 and is installed in the second through-hole 311. The end of the mounting sleeve 321 extending from the first through-hole 15 is then connected to the fixed mounting body 210 (i.e., the end of the mounting sleeve 321 away from the accommodating space 13 is connected to the fixed mounting body 210). By providing the second through-hole 311 on the mounting block 31 and arranging the first through-hole 15 and the second through-hole 311 to face each other, the mounting sleeve 321 can be conveniently and quickly inserted and installed onto the mounting block 31, thereby improving assembly efficiency between the mounting sleeve 321 and the mounting block 31.

[0061] In some embodiments of the present application, in addition to including a mounting sleeve 321, the connection structure 32 also includes a connecting member 322, as shown in FIG7 . The connecting member 322 passes through the mounting sleeve 321 and extends outside the housing 10 for connection to the fixed installation body 210. In some embodiments of the present application, the connecting member 322 includes, but is not limited to, a bolt and nut set. The bolt is passed through the mounting sleeve 321, with the head of the bolt resting on the end of the mounting sleeve 321 away from the fixed installation body 210. The threaded end extending from the mounting sleeve 321 is assembled to the fixed installation body 210, and then the nut is tightened on the outside of the fixed installation body 210, thereby securing the battery 100 to the fixed installation body 210. As can be seen, the interlaced fit between the connecting member 322 and the mounting sleeve 321 facilitates the assembly process between the connecting member 322 and the mounting sleeve 321, thereby improving assembly efficiency.

[0062] In some embodiments of the present application, multiple battery cells 20 are arranged in a matrix array, and the mounting block 31 is located in any column. In some embodiments of the present application, as shown in FIG3 , the battery 100 is provided with, for example, six columns of battery cells 20. To achieve a better distribution of the load stress at each mounting position, mounting blocks 31 are placed in the middle of the second and fifth columns of battery cells 20, respectively. In this way, the two mounting devices 30 are used to distribute the load stress on each mounting portion 16 of the circumferential side wall of the housing 10, thereby improving the stress conditions of each mounting portion 16 of the battery 100 and enhancing the connection stability between the battery 100 and the fixed mounting body 210.

[0063] As shown in FIG3 , in some embodiments of the present application, since mounting blocks 31 are used as the support base for the mounting device 30 inside the battery 100, there is no need to design crossbeams / longitudinal beams inside the battery case 10 of the battery 100 to serve as the support base for the mounting device 30 inside the battery 100. In other words, the crossbeams / longitudinal beams are omitted inside the battery case 10, thereby saving some assembly space. The saved assembly space can be used to assemble a larger number of battery cells 20, greatly improving the space utilization rate of the internal space of the case 10. In addition, the increased number of battery cells 20 increases the overall energy storage capacity of the battery 100 and improves the energy storage density.

[0064] In some embodiments of the present application, the mounting block 31 is provided with two opposing first abutment structures and two opposing second abutment structures. The first arrangement direction X of the two first abutment structures is perpendicular to the second arrangement direction Y of the two second abutment structures. The two first abutment structures respectively abut against the battery cells 20 distributed along the first arrangement direction X and adjacent to the mounting block 31, and the two second abutment structures respectively abut against the battery cells 20 distributed along the second arrangement direction Y and adjacent to the mounting block 31. The first arrangement direction X and the second arrangement direction Y are indicated by the X and Y arrows in FIG. 3 . The first and second abutment structures abut against each battery cell 20 circumferentially located around the mounting block 31, thereby stabilizing the placement of the mounting block 31 within the accommodating space 13 and preventing the mounting block 31 from slipping within the accommodating space 13.

[0065] In some embodiments of the present application, the first abutting structure and / or the second abutting structure are rod-shaped structures, and the ends of the rod-shaped structures are used to abut against the battery cells 20. Providing the first abutting structure and / or the second abutting structure as rod-shaped structures can greatly reduce the weight of the mounting block 31, thereby helping to reduce the overall weight of the battery 100.

[0066] Alternatively, in some other embodiments of the present application, the first and / or second abutting structures are block-shaped structures having abutting side surfaces that conform to the side shapes of the battery cells 20. Furthermore, the mounting block 31 has a profile identical to that of the battery cells 20, allowing it to replace one of the battery cells 20 in the row in which the mounting block 31 is located. By designing the mounting block 31 to have the same profile as the battery cells 20, when the mounting block 31 is placed in the accommodating space 13 and mated with the battery cells 20, the mounting block 31 occupies the position of a battery cell 20, and each side surface of the mounting block 31 abuts against a corresponding battery cell 20, thereby stably placing the mounting block 31 within the accommodating space 13. Furthermore, the mounting block 31 abuts against each of the battery cells 20 surrounding it in surface-to-surface contact. This surface-to-surface contact reduces the pressure exerted on the battery cells 20 during the battery 100's lifecycle when a battery cell 20 bulges, thereby preventing the sharp edges from piercing the battery cells 20 and protecting the integrity of the battery cells 20.

[0067] In some embodiments of the present application, as shown in FIG. 1 and FIG. 3 , the outer contours of the battery cell 20 and the mounting block 31 are both designed to be rectangular parallelepiped shapes.

[0068] To enhance the stability of the mounting sleeve 321 within the second through-hole 311 of the mounting block 31, the outer wall of the mounting sleeve 321 forms a restraining fit with the wall of the second through-hole 311. Specifically, as shown in Figures 5 to 7 , in some embodiments of the present application, an insert 33 is provided on the wall of the second through-hole 311, and the mounting sleeve 321 is restrained by the insert 33 to prevent it from falling out of the second through-hole 311. When the mounting sleeve 321 is inserted and assembled into the second through-hole 311, the mounting sleeve 321 and the insert 33 cooperate to form a restraining relationship, so that the insert 33 can stably restrain the mounting sleeve 321 within the second through-hole 311, preventing the mounting sleeve 321 from falling out of the second through-hole 311.

[0069] In some embodiments of the present application, there are multiple inserts 33, and the multiple inserts 33 are circumferentially arranged on the wall of the second through hole 311. When there are multiple inserts 33, an annular mounting groove can be opened on the wall of the second through hole 311, and then each insert 33 can be sequentially embedded and fixed in the annular mounting groove.

[0070] Alternatively, in other embodiments of the present application, the insert 33 is annular and is embedded and fixed to the wall of the second through hole 311. When the insert 33 is annular, the mounting block 31 is formed using a pre-embedded method. That is, the annular insert 33 is placed on a mold, and then the mold cavity is cast to form the mounting block 31. In this way, the annular insert 33 is pre-embedded and fixed in the formed mounting block 31.

[0071] As shown in Figures 2, 6, and 7, in some embodiments of the present application, the mounting sleeve 321 includes a first sleeve 3211 and a second sleeve 3212. The first sleeve 3211 and the second sleeve 3212 are connected to each other to form a complete mounting sleeve 321. Specifically, the first end of the first sleeve 3211 passes through the first through hole 15, and the second end of the first sleeve 3211 is inserted into the second through hole 311. The first sleeve 3211 has a stepped surface 32110, which abuts the first end of the insert 33. The second sleeve 3212 is connected to the second end of the first sleeve 3211, and the end of the second sleeve 3212 abuts the second end of the insert 33. When the first sleeve 3211 and the second sleeve 3212 are assembled into the second through hole 311, the stepped surface 32110 of the first sleeve 3211 and the end of the second sleeve 3212 respectively abut against the ends of the insert 33, thereby clamping the insert 33. Since the insert 33 is fixed to the mounting block 31, the insert 33 can restrict the mounting sleeve 321, preventing the mounting sleeve 321 from axially moving along the axis of the second through hole 311. In other words, it prevents the mounting sleeve 321 from falling out of the second through hole 311 along the axis of the second through hole 311. In this way, the mounting sleeve 321 is stabilized on the mounting block 31.

[0072] In some embodiments of the present application, the second end of the first sleeve 3211 is screwed to the second sleeve 3212. The screw connection method is used to connect the first sleeve 3211 and the second sleeve 3212, which greatly improves the connection efficiency.

[0073] In other embodiments of the present application, the second end of the first sleeve 3211 and the second sleeve 3212 can also be connected using a snap-fit ​​assembly method. Specifically, a snap-fitting protrusion is provided on the outer wall of the second end of the first sleeve 3211, and an L-shaped snap-fitting groove is provided on the interior of the second sleeve 3212 to match the snap-fitting protrusion. During assembly, the second end of the first sleeve 3211 is inserted into the second sleeve 3212, and the snap-fitting protrusion slides into the snap-fitting groove. The first sleeve 3211 and the second sleeve 3212 are then rotated relative to each other by an angle to achieve a snap-fitting fit between the snap-fitting protrusion and the snap-fitting groove, thereby completing the connection between the first sleeve 3211 and the second sleeve 3212. At this point, the first sleeve 3211 and the second sleeve 3212 jointly clamp the insert 33, that is, the insert 33 restricts the axial movement of the mounting sleeve 321 along the axis of the second through hole 311, preventing the mounting sleeve 321 from disengaging from the second through hole 311.

[0074] As shown in Figures 6 and 7, in some embodiments of the present application, a sealing ring 34 and structural adhesive 35 are provided between the first sleeve 3211 and the bottom plate 14 to form a sealing arrangement for the first through hole 15. In this battery case, an annular protrusion 32111 is provided on the outer wall of the end of the first sleeve 3211 that passes through the first through hole 15. The sealing ring 34 is disposed between the annular protrusion 32111 and the bottom plate 14. When the first sleeve 3211 and the second sleeve 3212 are screwed together, the annular protrusion 32111 and the bottom plate 14 squeeze the sealing ring 34, causing the sealing ring 34 to elastically deform under the squeezing, thereby sealing the assembly gap between the first sleeve 3211 and the first through hole 15. Furthermore, when the mounting device 30 is connected to the fixed mounting body 210, the structural adhesive 35 is disposed between the fixed mounting body 210 and the end of the first sleeve 3211. When the connection structure 32 is tightened, the structural adhesive 35 is squeezed by the fixed mounting body 210 and the end of the first sleeve 3211, causing the structural adhesive 35 to elastically deform under the squeeze, thereby sealing the assembly gap between the connection structure 32, the through hole of the first sleeve 3211, and the fixed mounting body 210. Thus, when the battery 100 is mounted and fixed on the fixed mounting body 210, the sealing ring 34 and the structural adhesive 35 form a seal around the first through hole 15, effectively preventing moisture from the external environment from penetrating through the first through hole 15 into the accommodating space 13 of the housing 10 and corroding the battery cell 20 and electrical components, thereby effectively protecting the internal components of the battery 100.

[0075] In order to enhance the structural strength of the housing 10 and meet the assembly requirements for the installation strength and installation stability of the housing 10, as shown in Figure 4, in some embodiments of the battery 100 of the present application, a reinforcing rib 40 is provided on the side of the bottom plate 14 facing away from the accommodating space 13, that is, the reinforcing rib 40 is located outside the housing 10. Moreover, a matching hole is provided on the reinforcing rib 40, which is arranged opposite to the first through hole 15 and is connected to the first through hole 15. When assembling the mounting sleeve 321, the first sleeve 3211 is sequentially passed through the first through hole 15 and the matching holes on the reinforcing rib 40 and then assembled to the fixed installation body 210. In this way, the reinforcing rib 40 can help improve the structural strength of the bottom plate 14 of the housing 10, thereby enhancing the installation strength of the housing 10. Therefore, after the battery 100 is installed on the fixed installation body 210, the installation stability of the battery 100 can be effectively improved.

[0076] Compared to batteries in the related art that employ internal crossbeams and longitudinal beams to enhance the structural strength of the battery case, the battery case of the battery 100 employs reinforcing ribs 40 to enhance the structural strength of the bottom plate 14 of the case 10, thereby eliminating the internal crossbeams and longitudinal beams of the case 10. This significantly increases the space 13 of the case 10 for accommodating the battery cells 20. This means that a greater number of battery cells 20 can be accommodated within the space 13, thereby increasing the total energy storage capacity and energy density of the battery 100.

[0077] As shown in Figures 6 and 7, the structural adhesive 35 includes a first structural adhesive 351 and a second structural adhesive 352. The first structural adhesive 351 is sleeved on the outside of the end of the first sleeve 3211, and the second structural adhesive 352 is located on the inside of the end of the first sleeve 3211 and is sleeved on the bolt. When the battery 100 is installed on the fixed installation body 210, the reinforcing rib 40 and the fixed installation body 210 clamp the first structural adhesive 351, and the first sleeve 3211 and the fixed installation body 210 clamp the second structural adhesive 352. When the nut and bolt are locked, the first structural adhesive 351 is squeezed by the reinforcing rib 40 and the fixed body 210 to produce elastic deformation, thereby sealing the assembly gap between the fixed body 210, the reinforcing rib 40, and the first sleeve 3211. Furthermore, the second structural adhesive 352 is squeezed by the first sleeve 3211 and the fixed body 210 to produce elastic deformation, thereby also sealing the assembly gap between the fixed body 210, the first sleeve 3211, and the bolt. In other words, a two-level seal is formed between the battery 100 and the fixed body 210 by the first structural adhesive 351 and the second structural adhesive 352, effectively preventing moisture from the external environment from penetrating through the assembly gap into the accommodating space 13 and corroding the battery cells 20 and electrical components, thereby effectively protecting the internal components of the battery 100.

[0078] In some embodiments of the battery 100 of the present application, the battery 100 includes a plurality of mounting devices 30, with any two adjacent mounting devices 30 spaced apart. In some embodiments of the present application, as shown in FIG3 , the battery 100 is provided with, for example, six columns of battery cells 20. To achieve a better distribution of the load stress at each mounting position, mounting blocks 31 are placed in the middle of the second and fifth columns of battery cells 20, respectively. In this way, the two mounting devices 30 are used to distribute the load stress on each mounting portion 16 of the circumferential side wall of the housing 10, thereby improving the stress conditions of each mounting portion 16 of the battery 100 and enhancing the connection stability between the battery 100 and the fixed installation body 210. In other embodiments of the present application, the plurality of mounting devices 30 may also be discretely and randomly distributed, which can also serve to distribute the load stress on each mounting portion 16 of the circumferential side wall of the housing 10, thereby improving the stress conditions of each mounting portion 16 of the battery 100 and enhancing the connection stability between the battery 100 and the fixed installation body 210.

[0079] As shown in Figures 1 to 5, in some embodiments of the battery 100 of the present application, the housing 10 includes a lower housing 11 and a housing cover 12. The lower housing 11 and the housing cover 12 cover each other to form a receiving space 13. The circumferential side of the lower housing 11 is provided with a plurality of mounting portions 16, which are used to connect to a fixed installation body 210. The battery 100 not only uses a mounting device 30 located in the middle to connect to the fixed installation body 210, but also the plurality of mounting portions 16 on the circumferential sidewalls of the housing 10 are fixedly connected to the fixed installation body 210, thereby fixing the battery 100 to the fixed installation body 210.

[0080] According to another aspect of the present application, a battery 100 is provided. The battery includes a plurality of battery cells 20 and the aforementioned battery case. The plurality of battery cells 20 are arranged in a matrix array within the accommodation space 13 of the battery case 10. When the battery 100 is mounted on a fixed mounting body 210, the battery case 100 is connected to the fixed mounting body 210 using a mounting device 30 located in the middle of the battery 100. Simultaneously, the plurality of mounting portions 16 on the circumferential sidewalls of the case 10 are also fixedly connected to the fixed mounting body 210, thereby securing the battery 100 to the fixed mounting body 210. In this way, compared with the related art in which the battery is fixedly connected to the fixed installation body only through the mounting parts on the circumferential side walls of the battery box, the battery box provided by the embodiment design of the present application can disperse the load stress of each mounting part 16 through the mounting device 30 located in the middle position of the battery 100, improve the stress conditions of each mounting part 16 of the battery 100, and improve the connection stability between the battery 100 and the fixed installation body 210.

[0081] According to another aspect of the present application, an electric device 200 is provided. The electric device 200 includes a fixed installation body 210 and the aforementioned battery 100 , wherein the battery 100 is installed in the fixed installation body 210 .

[0082] In an embodiment of the present application, the electrical equipment 200 is a new energy electric vehicle, as shown in Figure 8. Accordingly, the fixed installation body 210 is the crossbeam and / or longitudinal beam of the vehicle chassis, and the battery 100 supplies power to the drive motor 220 and other electrical appliances of the new energy electric vehicle.

[0083] The above are merely optional embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application should be included within the scope of the claims of the present application.

Claims

1. A battery box having a storage space, characterized in that: include: A bottom plate having a first through hole; The mounting device includes a mounting block and a connecting structure, wherein the mounting block is arranged on a side of the base plate facing the accommodating space, the mounting block is aligned with the first through hole, the connecting structure passes through the first through hole and one end is connected to the mounting block, and the other end of the connecting structure is used to connect to a fixed mounting body.

2. The battery box according to claim 1, characterized in that: The connection structure includes a mounting sleeve, the mounting block is provided with a second through hole, the second through hole is arranged opposite to the first through hole, the mounting sleeve passes through the first through hole and is installed in the second through hole, and the end of the mounting sleeve away from the accommodating space is used to connect to the fixed installation body.

3. The battery box according to claim 2, characterized in that: The connection structure further includes a connection member, the connection member is connected to the mounting sleeve, and the connection member extends out of the base plate to be connected to the fixed installation body.

4. The battery box according to any one of claims 1 to 3, characterized in that: The mounting block is provided with two opposite first abutment structures and two opposite second abutment structures, the first arrangement direction of the two first abutment structures is perpendicular to the second arrangement direction of the two second abutment structures, the two first abutment structures are respectively used to abut against battery cells distributed along the first arrangement direction and adjacent to the mounting block, and the two second abutment structures are respectively used to abut against battery cells distributed along the second arrangement direction and adjacent to the mounting block.

5. The battery box according to claim 4, characterized in that: The first abutting structure and / or the second abutting structure is a rod-shaped structure, and an end of the rod-shaped structure is used to abut against the battery cell.

6. The battery case according to claim 4, characterized in that: The first abutting structure and / or the second abutting structure is a block-shaped structure, and the block-shaped structure has an abutting side surface that is adapted to the side surface shape of the battery cell.

7. The battery case according to claim 6, characterized in that: The outer contour of the mounting block is the same as the outer contour of the battery cell.

8. The battery case according to any one of claims 2 to 7, characterized in that: The outer wall of the mounting sleeve is limitedly matched with the hole wall of the second through hole.

9. The battery case according to claim 8, characterized in that: An insert is provided on the hole wall of the second through hole, and a groove matching with the insert is provided on the outer wall of the mounting sleeve.

10. The battery case according to claim 9, characterized in that: There are a plurality of inserts, and the plurality of inserts are circumferentially arranged on the hole wall of the second through hole; Alternatively, the insert is annular and is embedded and fixed in the hole wall of the second through hole.

11. The battery case according to claim 9 or 10, characterized in that: The mounting sleeve includes a first sleeve and a second sleeve, the first end of the first sleeve passes through the first through hole, the second end of the first sleeve is inserted into the second through hole, the first sleeve is provided with a step surface, the second sleeve is connected to the second end of the first sleeve, and the groove is formed between the end of the second sleeve and the step surface.

12. The battery case according to claim 11, characterized in that: The second end of the first sleeve is threadedly connected to the second sleeve.

13. The battery case according to claim 11 or 12, characterized in that: A sealing ring and structural adhesive are provided between the first sleeve and the bottom plate to form a sealing arrangement for the first through hole.

14. The battery case according to any one of claims 1 to 13, characterized in that: A reinforcing rib is provided on a side of the bottom plate away from the accommodating space, and a matching hole is provided on the reinforcing rib. The matching hole is directly opposite to and communicated with the first through hole.

15. The battery case according to any one of claims 1 to 13, characterized in that: The battery box includes a plurality of mounting devices evenly distributed on the bottom plate.

16. The battery case according to any one of claims 1 to 15, characterized in that: The battery box includes a lower box and a box cover, wherein the lower box and the box cover cover each other to form the accommodating space, and a plurality of mounting parts are arranged on the circumferential side of the lower box, and the mounting parts are used to connect the fixed installation body.

17. A battery, characterized in that: include: The battery box according to any one of claims 1 to 16; as well as The battery cell is arranged in the accommodation space.

18. The battery according to claim 17, characterized in that The mounting block abuts against side walls of the battery cells surrounding the mounting block.

19. An electrical equipment, characterized in that: It comprises a fixed installation body and a battery as described in any one of claims 17-18, wherein the battery is installed on the fixed installation body.

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