Battery box body, battery and electric equipment

Abstract

The invention belongs to the technical field of battery pack installation, and particularly relates to a battery box body, a battery and electric equipment. Wherein the battery box body is provided with an accommodating space, and the battery box body comprises a bottom plate provided with a first through hole; the mounting device comprises a mounting block and a connecting structure, the mounting block is arranged on the side, facing the containing space, of the bottom plate, the mounting block is aligned to the first through hole, the connecting structure penetrates through the first through hole, one end of the connecting structure is connected with the mounting block, and the other end of the connecting structure is used for being connected with a fixed mounting body. By means of the technical scheme, the problem that due to the fact that each mounting part of an existing battery pack bears complex load stress, connection between each mounting part and a vehicle body chassis is not stable easily is solved.

Description

Technical Field

[0001] 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

[0002] In the related art, the outer wall of the battery box of the battery pack is provided with circumferentially distributed mounting parts, which are fixedly connected to the chassis of the electric vehicle through each mounting part. There is a distance between each mounting part and the center of gravity of the battery pack. From a mechanical point of view, the load stress borne by each mounting part is relatively complex. During the driving of the electric vehicle, due to the complex load stress borne by each mounting part, it is easy to cause the connection between each mounting part and the chassis of the vehicle body to be unstable, and even cause the connection between the mounting part and the chassis of the vehicle body to fail in severe cases, affecting the driving safety of the electric vehicle. Summary of the invention

[0003] The purpose of the present application is to provide a battery box, a battery and an electrical device, aiming to solve the problem that the various mounting parts of the existing battery are easily subject to complex load stress, which leads to unstable connection between each mounting part and the vehicle chassis.

[0004] To achieve the above purpose, the technical solution adopted in this application is: a battery box having a storage space, including:

[0005] A bottom plate having a first through hole;

[0006] The mounting device includes a mounting block and a connecting structure. 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. The other end of the connecting structure is used to connect to a fixed mounting body.

[0007] The battery box provided by the embodiment of the present application is used for assembling batteries, and the battery box adopts a mounting device located in the middle to connect with the fixed installation body. At the same time, multiple mounting parts of the circumferential side wall of the battery box are also fixedly connected to the fixed installation body, so that the battery is fixedly installed on the fixed installation body as a whole. In this way, compared with the related art in which the battery box is only fixedly connected to the fixed installation body by the mounting parts on the circumferential side wall of the battery box, the battery box 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.

[0008] In some embodiments of the present application, 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 and fix the mounting body. In this way, the mounting sleeve can be conveniently and quickly inserted and installed on the mounting block, thereby improving the assembly efficiency between the mounting sleeve and the mounting block.

[0009] In some embodiments of the present application, the connection structure further includes a connection member, the connection member is connected to the mounting sleeve, and the connection member extends outside the base plate to be connected to the fixed installation body. The interlaced cooperation between the connection member and the mounting sleeve facilitates the assembly process between the connection member and the mounting sleeve, thereby improving the assembly efficiency.

[0010] In some embodiments of the present application, 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 the 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 the battery cells distributed along the second arrangement direction and adjacent to the mounting block. In this way, the placement position of the mounting block in the accommodation space is stabilized, and the mounting block will not slip in the accommodation space.

[0011] In some embodiments of the present application, the first abutment structure and / or the second abutment structure is a rod-shaped structure, and the end of the rod-shaped structure is used to abut against the battery cell. Alternatively, in some other embodiments of the present application, the first abutment structure and / or the second abutment structure is a block-shaped structure, and the block-shaped structure has an abutment side surface that matches the side shape of the battery cell. In this way, the placement position of the mounting block in the accommodation space is stabilized, and the mounting block will not slip in the accommodation space.

[0012] 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 position of the mounting block in the accommodation space is stabilized, and the mounting block will not slip in the accommodation space.

[0013] In some embodiments of the present application, the outer wall of the mounting sleeve is limitedly matched with the hole wall of the second through hole. Specifically, in some embodiments of the present application, an insert is provided on the hole wall of the second through hole, and the outer wall of the mounting sleeve is provided with a groove that matches the insert. The insert is used to limit the mounting sleeve to prevent the mounting sleeve from falling out of the second through hole.

[0014] In some embodiments of the present application, there are multiple inserts, which are circumferentially arranged on the hole wall of the second through hole; or, the insert is annular and is embedded and fixed on the hole wall of the second through hole. The insert is used to restrict the mounting sleeve to prevent the mounting sleeve from falling out of the second through hole.

[0015] 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 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 stepped surface, the second sleeve is connected to the second end of the first sleeve, and a groove is formed between the end of the second sleeve and the stepped surface. In this way, the mounting sleeve is stabilized on the mounting block to prevent the mounting sleeve from falling out of the second through hole.

[0016] In some embodiments of the present application, the second end of the first sleeve is threadedly connected to the second sleeve. The first sleeve and the second sleeve are connected by threading, and the connection efficiency is greatly improved.

[0017] In some embodiments of the present application, a sealing ring and a structural adhesive are provided between the first sleeve and the bottom plate to form a sealing arrangement for the first through hole. The sealing ring and the structural adhesive form a sealing arrangement for the first through hole, which can effectively prevent moisture from the external environment from penetrating through the first through hole into the accommodation space of the battery box to corrode the battery cell and electrical components, and better protect the internal components of the battery pack.

[0018] In some embodiments of the present application, a reinforcing rib is provided on one side of the bottom plate away from the accommodation space, and a matching hole is provided on the reinforcing rib, and the matching hole is directly opposite to and connected to the first through hole. This can enhance the structural strength of the battery box to meet the assembly requirements of the installation strength and installation stability of the battery box.

[0019] In some embodiments of the present application, the battery box includes a plurality of mounting devices evenly distributed on the bottom plate, which effectively improves the stress of each mounting part of the battery pack and improves the connection stability between the battery pack and the fixed installation body.

[0020] In some embodiments of the present application, the battery box includes a lower box and a box cover, the lower box and the box cover cover each other to form a storage space, and a plurality of mounting parts are provided on the circumferential side of the lower box, and the mounting parts are used to connect to the fixed installation body. The battery pack can disperse the load stress of each mounting part through the mounting device located in the middle position, improve the force condition of each mounting part of the battery pack, and improve the connection stability between the battery pack and the fixed installation body.

[0021] According to another aspect of the present application, a battery is provided. Specifically, the battery includes:

[0022] The battery case as described above; and

[0023] The battery cell is arranged in the accommodation space.

[0024] In some embodiments of the present application, the mounting block abuts against the side walls of each battery cell surrounding it.

[0025] 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 installation body, and at the same time, the multiple mounting parts of the circumferential side wall of the battery case are also fixedly connected to the fixed installation body, so that the battery is fixedly installed on the fixed installation body as a whole. In this way, compared with the related art in which the battery case is only fixedly connected to the fixed installation body through the mounting parts on the circumferential side wall of the battery case, the battery case provided in 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.

[0026] According to another aspect of the present application, an electric device is provided. Specifically, the electric device includes a fixed installation body and the battery as described above, and the battery is installed in the fixed installation body. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. 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 paying creative labor.

[0028] Figure 1 A schematic diagram of the exploded structure of a battery according to an embodiment of the present application;

[0029] Figure 2 A schematic diagram of the three-dimensional structure of a mounting sleeve of a battery box of a battery in an embodiment of the present application;

[0030] Figure 3 It is a schematic diagram of the top view of the battery structure of an embodiment of the present application, wherein the box cover has been removed;

[0031] Figure 4 It is a bottom view of the structure of the battery of an embodiment of the present application, wherein the box cover has been removed;

[0032] Figure 5 for Figure 3 Schematic diagram of the cross-sectional structure in the AA direction;

[0033] Figure 6 for Figure 5 A schematic diagram of the enlarged structure at B in the middle;

[0034] Figure 7 It is a partial cross-sectional structural schematic diagram of a battery in an embodiment of the present application connected to a fixed installation body through a mounting device, wherein the box cover has been removed;

[0035] Figure 8 A schematic diagram of the structure of an electrical device according to an embodiment of the present application.

[0036] Among them, the reference numerals in the figure are:

[0037] 100. Battery;

[0038] 10. box shell; 11. lower box body; 12. box cover; 13. accommodating space; 14. bottom plate; 15. first through hole; 16. mounting part;

[0039] 20. Battery cells;

[0040] 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;

[0041] 40. Strengthen the ribs;

[0042] 200, electrical equipment; 210, fixed installation body; 220, drive motor;

[0043] X, first arrangement direction; Y, second arrangement direction. DETAILED DESCRIPTION

[0044] Embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application, and should not be construed as limiting the present application.

[0045] In the description of the present application, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the 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, and therefore should not be understood as a limitation on the present application.

[0046] In addition, the terms "first", "second", etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first", "second", etc. may explicitly or implicitly include one or more of the feature. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0047] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like 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 a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0048] At present, from the perspective of market development, the application of power batteries, especially lithium batteries, is becoming more and more widespread (hereinafter, lithium batteries are collectively referred to as batteries). Batteries are not only used in energy storage power systems such as hydropower, thermal power, wind power and solar power stations, but are also widely used in electric vehicles such as electric bicycles, electric motorcycles, electric cars, as well as police equipment, military equipment, and aerospace. With the continuous expansion of battery application areas, the market demand is also constantly expanding.

[0049] In the related art, in the process of assembling and producing batteries, the battery cells are first placed into the storage space of the battery box, and the 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, and 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.).

[0050] Furthermore, the assembled batteries are widely used in electrical equipment to provide electrical energy, including but not limited to mobile phones, tablets, laptops, electric toys, electric tools, battery cars, electric cars, ships, spacecraft, etc. Among them, electric toys may 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, etc. Spacecraft may include but are not limited to airplanes, rockets, space shuttles and spacecraft, etc.

[0051] Among them, in view of the current booming development of new energy electric vehicles, assembled and produced batteries are applied to electric vehicles, thereby providing electric energy for the driving motors and other electrical appliances of electric vehicles. In the related art, the outer wall of the battery box of the battery is provided with circumferentially distributed mounting parts, which are fixedly connected to the crossbeams and / or longitudinal beams of the body chassis of the electric vehicle through each mounting part, so that the battery is fixedly installed on the body chassis of the electric vehicle. In this way, the load stress of the battery is borne by each mounting part of each battery box, each mounting part is located on the circumferential side wall of the battery box, and each mounting part is separated from the center of gravity of the battery. From a mechanical point of view, the load stress borne by each mounting part is relatively complex. During the driving process of the electric vehicle, it is easy to cause the connection between each mounting part and the body chassis to be unstable, and in severe cases, it may even cause the connection between the mounting part and the body chassis to fail, affecting the driving safety of the electric vehicle.

[0052] Based on the above considerations, in order to solve the problem of unstable connection between the battery and the chassis of the vehicle body in the electric vehicle of 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, and the battery box is used to assemble and produce batteries, and the battery is applied to the electric vehicle 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 of the vehicle body through the mounting part on the circumferential side wall of the battery box, but also connected to the chassis of the vehicle body through the mounting device of the battery box in the middle position, thereby improving the load stress of each mounting position between the battery and the chassis of the vehicle body, improving the force condition of each mounting position of the battery, and improving the connection stability between the battery and the chassis of the vehicle body.

[0053] in:

[0054] 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 body can be called the middle position of the battery.

[0055] A battery cell is a 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 collector, and a negative electrode 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 collector, and the negative electrode ear is formed into the negative terminal of the battery cell through the negative electrode collector.

[0056] like Figures 1 to 5As shown, the battery 100 provided by the embodiment of the present application includes a battery box, which includes a box shell 10, a mounting device 30 and a plurality of battery cells 20. The box shell 10 is formed with a receiving space 13, and the box shell 10 has a bottom plate 14, and 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 in the receiving space 13, and the battery cells 20 are connected in series, in parallel or in a mixed manner according to the designed rated voltage of the battery through electrical components, and 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 in the accommodating space 13. The mounting block 31 is opposite to the first through hole 15. The mounting block 31 abuts against the side walls of each battery cell 20 surrounding it, so that the mounting block 31 is stably placed between multiple battery cells 20, and the mounting block 31 will not slip. The connecting structure 32 passes through the first through hole 15 and is connected to the mounting block 31, and the connecting structure 32 is used to connect to the fixed installation body 210. In addition, a plurality of mounting parts 16 are provided on the circumferential side of the box shell 10, and the mounting parts 16 are used to connect to the fixed installation body 210, so that the battery 100 is fixedly mounted on the fixed installation body 210.

[0057] The battery case provided by the embodiment of the present application adopts a mounting device 30 located in the middle of the battery 100 to connect with the fixed installation body 210. At the same time, the multiple mounting parts 16 of the circumferential side wall of the case 10 are also fixedly connected to the fixed installation body 210, so that the battery 100 is fixedly installed on the fixed installation body 210. In this way, compared with the related art in which the battery is only fixedly connected to the fixed installation body by the mounting parts on the circumferential side wall of the battery case, the battery case provided by the embodiment of the present application can disperse the load stress of each mounting part 16 through the mounting device 30 located in the middle of the battery 100, improve the force condition of each mounting part 16 of the battery 100, and improve the connection stability between the battery 100 and the fixed installation body 210.

[0058] In some embodiments of the present application, Figure 2 , Figure 5 to Figure 6As shown, the connection structure 32 includes a mounting sleeve 321. In order to facilitate the mounting sleeve 321 to be assembled to the mounting block 31, the mounting block 31 is provided with a second through hole 311, and the second through hole 311 is arranged opposite to the first through hole 15. When the mounting sleeve 321 is assembled to the mounting block 31, the mounting sleeve 321 passes through the first through hole 15 and is installed in the second through hole 311, and then, the end of the mounting sleeve 321 passing through the first through hole 15 is used to connect to the fixed mounting body 210 (that is, the end of the mounting sleeve 321 away from the accommodating space 13 is used to connect to the fixed mounting body 210). By opening the second through hole 311 on the mounting block 31 and making the first through hole 15 and the second through hole 311 opposite to each other, the mounting sleeve 321 can be conveniently and quickly inserted and installed on the mounting block 31, thereby improving the assembly efficiency between the mounting sleeve 321 and the mounting block 31.

[0059] In some embodiments of the present application, the connection structure 32 includes not only a mounting sleeve 321, such as Figure 7 As shown, the connection structure 32 also includes a connection member 322, the connection member 322 passes through the mounting sleeve 321, and the connection member 322 extends out of the box shell 10 for connection to the fixed installation body 210. In some embodiments of the present application, the connection member 322 includes but is not limited to a bolt and nut kit, the bolt passes through the mounting sleeve 321, the head of the bolt stops at the end of the mounting sleeve 321 away from the fixed installation body 210, the threaded end passing through the mounting sleeve 321 is assembled to the fixed installation body 210, and then the nut is locked on the outside of the fixed installation body 210, so that the battery 100 is fixedly installed on the fixed installation body 210. It can be seen that the interlaced cooperation between the connection member 322 and the mounting sleeve 321 facilitates the assembly process between the connection member 322 and the mounting sleeve 321, and improves the assembly efficiency.

[0060] In some embodiments of the present application, a plurality of battery cells 20 are arranged in a row-column array, and the mounting block 31 is located in any column. Figure 3 As shown, the battery 100 is provided with six columns of battery cells 20, for example. In order to achieve a better dispersion of the load stress at each mounting position, mounting blocks 31 are placed in the middle positions of the second column and the fifth column of battery cells 20, respectively. In this way, the load stress of each mounting portion 16 of the circumferential side wall of the box shell 10 is dispersed through two mounting devices 30, thereby improving the stress condition of each mounting portion 16 of the battery 100 and improving the connection stability between the battery 100 and the fixed mounting body 210.

[0061] like Figure 3As shown, in some embodiments of the present application, since the mounting block 31 is used as the support base of the mounting device 30 inside the battery 100, there is no need to design a crossbeam / longitudinal beam inside the battery case 10 of the battery 100 to serve as the support base of the mounting device 30 inside the battery 100. In other words, the crossbeam / longitudinal beam is omitted inside the case 10 of the battery case, thereby saving some assembly space, and 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, and the increased number of battery cells 20 increases the overall energy storage capacity of the battery 100 and improves the energy storage density.

[0062] In some embodiments of the present application, the mounting block 31 is provided with two opposite first abutment structures and two opposite 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. For the first arrangement direction X and the second arrangement direction Y, please refer to Figure 3 The first abutment structure and the second abutment structure abut each battery cell 20 in the circumferential direction of the mounting block 31, thereby stabilizing the placement position of the mounting block 31 in the accommodation space 13, and the mounting block 31 will not slip in the accommodation space 13.

[0063] In some embodiments of the present application, the first abutting structure and / or the second abutting structure is a rod-shaped structure, and the end of the rod-shaped structure is used to abut against the battery cell 20. Setting the first abutting structure and / or the second abutting structure as a rod-shaped structure can greatly reduce the weight of the mounting block 31, thereby helping to reduce the overall weight of the battery 100.

[0064] Alternatively, in some other embodiments of the present application, the first abutment structure and / or the second abutment structure is a block structure, and the block structure has an abutment side surface that is adapted to the side shape of the battery cell 20. In addition, the outer contour of the mounting block 31 is the same as the outer contour of the battery cell 20, so as to replace one of the battery cells 20 in the column where the mounting block 31 is located. By designing the mounting block 31 to be the same as the outer contour of the battery cell 20, when the mounting block 31 is placed in the accommodation space 13 to cooperate with the battery cell 20, the mounting block 31 occupies the placement position of a battery cell 20, and each side surface of the mounting block 31 is respectively corresponding to abutting against a battery cell 20, so that it is stably placed in the accommodation space 13. Moreover, the mounting block 31 and each battery cell 20 around it are in surface-to-surface contact and abutment. In this way, during the service life of the battery 100, when the battery cell 20 is bulging, the surface-to-surface contact method reduces the pressure of the battery cell 20 being squeezed, thereby avoiding the tip from squeezing and piercing the battery cell 20, and protecting the integrity of the battery cell 20.

[0065] In some embodiments of the present application, Figure 1 and Figure 3 As shown, the outer contours of the battery cell 20 and the mounting block 31 are both designed to be rectangular parallelepiped shapes.

[0066] In order to improve the stability of the mounting sleeve 321 in the second through hole 311 of the mounting block 31, the outer wall of the mounting sleeve 321 and the hole wall of the second through hole 311 form a limiting fit. Figures 5 to 7 As shown, in some embodiments of the present application, an insert 33 is provided on the hole wall of the second through hole 311, and the mounting sleeve 321 is restricted by the insert 33 to prevent the mounting sleeve 321 from slipping 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 with each other to form a restriction relationship, so that the insert 33 can stably restrict the mounting sleeve 321 in the second through hole 311 to prevent the mounting sleeve 321 from slipping out of the second through hole 311.

[0067] In some embodiments of the present application, there are multiple inserts 33, and the multiple inserts 33 are circumferentially arranged on the hole wall of the second through hole 311. When there are multiple inserts 33, an annular mounting groove can be opened on the hole wall of the second through hole 311, and then each insert 33 is sequentially embedded and fixed in the annular mounting groove.

[0068] Alternatively, in some other embodiments of the present application, the insert 33 is annular, and the insert 33 is embedded and fixed in the hole wall of the second through hole 311. When the insert 33 is annular, the mounting block 31 is formed by pre-embedding, that is, the annular insert 33 is placed on the mold, and then the mold cavity is cast to form the mounting block 31. In this way, the annular insert 33 is embedded and fixed in the formed mounting block 31.

[0069] like Figure 2 , Figure 6 and Figure 7 As shown, in some embodiments of the present application, the mounting sleeve 321 includes a first sleeve 3211 and a second sleeve 3212, and 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 is provided with a stepped surface 32110, and the stepped surface 32110 abuts against 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 against the second end of the insert 33. When the first sleeve 3211 and the second sleeve 3212 are assembled to 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 two ends of the insert block 33, thereby clamping the insert block 33. Since the insert block 33 is fixed on the mounting block 31, the insert block 33 can limit the mounting sleeve 321, preventing the mounting sleeve 321 from axially moving along the hole axis direction of the second through hole 311, that is, preventing the mounting sleeve 321 from slipping out of the second through hole 311 along the hole axis direction of the second through hole 311. In this way, the mounting sleeve 321 is stabilized on the mounting block 31.

[0070] In some embodiments of the present application, the second end of the first sleeve 3211 is threadedly connected to the second sleeve 3212. The first sleeve 3211 and the second sleeve 3212 are connected by threading, and the connection efficiency is greatly improved.

[0071] In some other embodiments of the present application, the second end of the first sleeve 3211 and the second sleeve 3212 can also be connected by a snap-fit ​​assembly method. Specifically, a snap-fit ​​protrusion is provided on the outer wall of the second end of the first sleeve 3211, and an L-shaped snap-fit ​​groove adapted to the snap-fit ​​protrusion is provided on the interior of the second sleeve 3212. During assembly, the second end of the first sleeve 3211 is inserted into the second sleeve 3212, and the snap-fit ​​protrusion slides into the snap-fit ​​groove, and then the first sleeve 3211 and the second sleeve 3212 are relatively rotated at an angle so that the snap-fit ​​protrusion and the snap-fit ​​groove are snap-fitted, thereby completing the connection between the first sleeve 3211 and the second sleeve 3212. At this time, the first sleeve 3211 and the second sleeve 3212 jointly clamp the insert 33, that is, the insert 33 limits the axial movement of the mounting sleeve 321 along the hole axis direction of the second through hole 311, so that the mounting sleeve 321 cannot be separated from the second through hole 311.

[0072] like Figure 6 and Figure 7 As shown, in some embodiments of the present application, a sealing ring 34 and a 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 the battery case, an annular protrusion 32111 is provided on the outer wall of the end of the first sleeve 3211 passing through the first through hole 15, and the sealing ring 34 is arranged between the annular protrusion 32111 and the bottom plate 14. When the first sleeve 3211 and the second sleeve 3212 are tightened to each other through threads, the annular protrusion 32111 and the bottom plate 14 squeeze the sealing ring 34, so that the sealing ring 34 is squeezed to produce elastic deformation, so that the sealing ring 34 seals 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 installation body 210, the structural adhesive 35 is arranged between the fixed installation body 210 and the end of the first sleeve 3211, and when the connection structure 32 is tightened, the structural adhesive 35 is squeezed by the fixed installation body 210 and the end of the first sleeve 3211, so that the structural adhesive 35 is squeezed and elastically deformed, so that the structural adhesive 35 seals the assembly gap between the connection structure 32, the through hole of the first sleeve 3211 and the fixed installation body 210. In this way, when the battery 100 is installed and fixed on the fixed installation body 210, the sealing ring 34 and the structural adhesive 35 form a sealing arrangement for the first through hole 15, which can effectively prevent the water vapor of the external environment from penetrating from the first through hole 15 into the accommodating space 13 of the box shell 10 to corrode the battery cell 20 and the electrical components, and better protect the internal components of the battery 100.

[0073] In order to enhance the structural strength of the box shell 10 and meet the assembly requirements of the installation strength and installation stability of the box shell 10, Figure 4As shown, in the battery 100 of some embodiments of the present application, a reinforcing rib 40 is provided on the side of the bottom plate 14 away from the accommodating space 13, that is, the reinforcing rib 40 is located outside the box shell 10. Moreover, a matching hole is provided on the reinforcing rib 40, and the matching hole is arranged opposite to the first through hole 15, and the matching hole is connected to the first through hole 15. When assembling the mounting sleeve 321, the first sleeve 3211 passes through the first through hole 15 and the matching hole on the reinforcing rib 40 in sequence and is 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 box shell 10, and also enhance the installation strength of the box shell 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.

[0074] Compared with the battery box of the related art, which adopts the internal design of cross beams / longitudinal beams to enhance the structural strength of the battery box, the battery box of the battery 100 enhances the structural strength of the bottom plate 14 of the box shell 10 by providing reinforcing ribs 40, thereby eliminating the cross beams / longitudinal beams inside the box shell 10. In this way, the space 13 of the box shell 10 for placing the battery cells 20 can be greatly increased, that is, more battery cells 20 can be placed in the accommodation space 13, thereby increasing the total energy storage of the battery 100 and improving the energy density of the battery 100.

[0075] like Figure 6 and Figure 7 As shown, 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 outer side of the end of the first sleeve 3211, and the second structural adhesive 352 is located on the inner side of the end of the first sleeve 3211 and is sleeved on the bolt. When the battery 100 is installed to 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 the bolt are locked, the first structural adhesive 351 is squeezed by the reinforcing rib 40 and the fixed installation body 210 to produce elastic deformation, thereby sealing the assembly gap between the fixed installation body 210, the reinforcing rib 40 and the first sleeve 3211, and the second structural adhesive 352 is squeezed by the first sleeve 3211 and the fixed installation body 210 to produce elastic deformation, thereby also sealing the assembly gap between the fixed installation body 210, the first sleeve 3211 and the bolt. That is, a two-level sealing setting is formed between the battery 100 and the fixed installation body 210 by the first structural adhesive 351 and the second structural adhesive 352, thereby effectively preventing the water vapor of the external environment from penetrating from the assembly gap here into the accommodating space 13 to cause erosion to the battery cell 20 and electrical components, and better protecting the internal components of the battery 100.

[0076] In some embodiments of the present application, the battery 100 includes a plurality of mounting devices 30, and any two adjacent mounting devices 30 are spaced apart. Figure 3 As shown, the battery 100 is provided with six columns of battery cells 20, for example. In order to achieve a better dispersion of the load stress of each mounting position, mounting blocks 31 are placed in the middle of the second column and the fifth column of battery cells 20, respectively. In this way, the load stress of each mounting portion 16 of the circumferential side wall of the box shell 10 is dispersed through two mounting devices 30, the stress condition of each mounting portion 16 of the battery 100 is improved, and the connection stability between the battery 100 and the fixed installation body 210 is improved. In other embodiments of the present application, the plurality of mounting devices 30 may also be discretely randomly distributed, which can also play a role in dispersing the load stress of each mounting portion 16 of the circumferential side wall of the box shell 10, improve the stress condition of each mounting portion 16 of the battery 100, and improve the connection stability between the battery 100 and the fixed installation body 210.

[0077] like Figures 1 to 5 As shown, in some embodiments of the battery 100 of the present application, the box shell 10 includes a lower box body 11 and a box cover 12, the lower box body 11 and the box cover 12 cover each other to form a receiving space 13, and a plurality of mounting portions 16 are provided on the circumferential side of the lower box body 11, and the mounting portions 16 are used to be connected to the fixed installation body 210. The battery 100 not only uses the mounting device 30 located in the middle to connect with the fixed installation body 210, but also, the plurality of mounting portions 16 on the circumferential side wall of the box shell 10 are fixedly connected to the fixed installation body 210, so that the battery 100 is fixedly installed on the fixed installation body 210.

[0078] According to another aspect of the present application, a battery 100 is provided. The battery includes a battery cell 20 and the aforementioned battery case, wherein the battery cell 20 is multiple, and the multiple battery cells 20 are arranged in a matrix array in the accommodation space 13 of the case 10 of the battery case. When the battery 100 is installed on the fixed installation body 210, the battery case uses a mounting device 30 located in the middle of the battery 100 to connect with the fixed installation body 210, and at the same time, the multiple mounting portions 16 of the circumferential side wall of the case 10 are also fixedly connected to the fixed installation body 210, so that the battery 100 is fixedly installed on 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 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, thereby improving the stress conditions of each mounting part 16 of the battery 100 and improving the connection stability between the battery 100 and the fixed installation body 210.

[0079] 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 .

[0080] In the embodiment of the present application, the electric device 200 is a new energy electric vehicle, such as Figure 8 As shown, correspondingly, the fixed installation body 210 is a crossbeam and / or a longitudinal beam of the vehicle chassis, and the battery 100 is used to supply power to the driving motor 220 and other electrical appliances of the new energy electric vehicle.

[0081] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope 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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