Battery device and electric device

Abstract

The utility model relates to a battery device and a power utilization device, and the battery device comprises a box body which is provided with a cavity, the side wall of the cavity is provided with a plurality of blocking parts, and the blocking parts protrude towards the interior of the cavity; the beams are arranged in the cavity at intervals in the first direction and connected to the box body, the beams extend in the second direction, the second direction is perpendicular to the first direction, and a containing space used for containing the single batteries is formed between every two adjacent beams; wherein the multiple blocking parts are at least located on the outer side of the beam on the outermost side, and the blocking parts abut against the outer surfaces of the beams; the box body comprises two mounting frames which are arranged in a spaced mode in the second direction and extend in the first direction; the containing part is supported between the two mounting frames, the containing part is used for forming a cavity, and the containing part comprises a composite material layer; wherein the plurality of blocking parts are arranged in the accommodating part, and the plurality of beams are arranged in the accommodating part. The battery device can improve the reliability of connection of internal structural members of the box body assembly.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of battery, in particular to a battery device and a power utilization device. BACKGROUND

[0002] Due to the advantages of high energy density, high power density, multiple cycle times and long storage time, lithium ion batteries and other batteries have been widely used in new energy electric vehicles.

[0003] At present, with the increasing requirement of lightweight for electric vehicles year by year, higher requirements for the lightweight of battery devices are put forward, and the use of composite box body is an effective means to reduce the weight of the box body. However, since the composite material cannot be welded with metal, the application of the composite box body is greatly limited. Therefore, how to solve the connection reliability of each structural part in the box body is an urgent problem to be solved. CONTENT OF THE INVENTION

[0004] The purpose of the present application is to improve the connection reliability of the structural parts in the box assembly of the battery device.

[0005] According to a first aspect of the present application, a battery device is provided, comprising a box assembly, the box assembly comprising:

[0006] a box having a cavity, a plurality of blocking parts are arranged on the side wall of the cavity, and the blocking parts protrude into the cavity; and

[0007] a plurality of beams are arranged in the cavity and connected to the box along a first direction, the beams extend along a second direction perpendicular to the first direction, and a containing space for placing battery monomers is formed between adjacent two beams;

[0008] wherein the plurality of blocking parts are located outside the outermost beam, and the blocking parts abut the outer surface of the beam; the box comprises:

[0009] two mounting racks are arranged along the second direction and extend along the first direction; and

[0010] a containing component is supported between the two mounting racks, the containing component is used to form the cavity, and the containing component comprises a composite material layer;

[0011] wherein the plurality of blocking parts are arranged on the containing component, and the plurality of beams are arranged in the containing component.

[0012] This embodiment, by providing a blocking part on the inner sidewall of the housing, can abut the outer surface of the outermost beam, reducing the strength requirements for the connection between the beam and the housing. When the battery cells in the outer housing space expand, they exert an outward tilting force on the beam. The blocking part prevents the beam from loosening, tilting, or tipping over. For the middle beam, since the battery cells in the housing spaces on both sides of the beam expand simultaneously, the force applied from both sides of the beam is not easily loosened, tilted, or tipped over, so a blocking part is not required to reduce the space occupied. Alternatively, blocking parts can be provided on both sides of the middle beam. This improves the structural reliability of the connection between the housing and the beam, thereby improving the reliability of the battery device.

[0013] The enclosure is designed as a combination of a mounting frame and housing components. By incorporating composite material housing components, the weight of the enclosure can be reduced, while also increasing the connection reliability of the battery device during installation. Because of the composite material housing components, the beams and housing components cannot be welded, making it difficult to guarantee the reliability of the connection between the beams and housing components. By incorporating multiple blocking parts on the inner sidewall of the housing components, the reliability of the connection between the beams and housing components can be improved.

[0014] In some embodiments, a plurality of blocking portions are disposed on the sidewall of the cavity extending along a first direction.

[0015] In this embodiment, multiple blocking parts are arranged on the side wall of the cavity extending along the first direction, so that the entire side of the blocking part can be used to apply blocking force to the beam, thereby optimizing the anti-tipping effect of the beam. Moreover, the blocking part is only located in the corner area between the side wall of the box and the outer side of the beam, and will not affect the installation of other accessories in the battery device in the area between the outermost beam and the side wall of the box.

[0016] In some embodiments, the outermost beam has blocking portions at both ends along the second direction.

[0017] This embodiment prevents the beam from tilting in the horizontal plane under the action of the battery cell expansion force by setting blocking parts at both ends of the outermost beam. The two blocking parts apply blocking force to both ends of the beam on the outer surface of the beam.

[0018] In some embodiments, the blocking portion is formed by protruding inward through the sidewall of the receiving member and a recess is formed on the outside of the receiving member, the recess being open on both the side and bottom of the receiving member;

[0019] The housing also includes multiple blocks, which are connected to two mounting brackets and are set one-to-one with multiple blocking parts. The blocks are inserted into the corresponding recesses from the outside of the receiving parts.

[0020] The embodiment sets the blocking part on the inner side of the mounting frame, and the blocking part is embedded in the recessed part to support and strengthen the blocking part, so that the blocking part reliably prevents the beam from tilting. Moreover, the recessed part is open on the side and bottom of the containing part, and although the mounting frame is provided with the stopper, the containing part is not affected by the stopper when being installed from top to bottom. In addition, the recessed part can ensure the structural integrity of the containing part and will not damage the sealing performance of the containing part.

[0021] In some embodiments, the containing part has an opening and is provided with a flange at the opening, and the mounting frame comprises:

[0022] a vertical plate;

[0023] a first support plate connected to the first end of the vertical plate and extending inwardly, configured to support the bottom of the containing part; and

[0024] a second support plate connected to the second end of the vertical plate and extending outwardly, configured to support the flange;

[0025] wherein the stopper is connected between the vertical plate and the first support plate.

[0026] The mounting frame of the embodiment can conveniently install the containing part of the composite material from top to bottom, and the bottom of the containing part can be directly supported on the first support plate, so that the mounting frame can provide stable support for the containing part and reliably bear the battery monomer with relatively large weight. The stopper is connected between the vertical plate and the first support plate, which not only increases the strength of the mounting frame, but also is embedded in the recessed part outside the blocking part to strengthen the blocking part, thereby achieving better anti-tilting effect.

[0027] In some embodiments, the stopper comprises:

[0028] a first plate extending in a first direction;

[0029] a second plate connected to one end of the first plate close to the beam in the first direction, and the second plate is perpendicular to the first plate; and

[0030] a plurality of reinforcing plates, each connected between the first plate and the second plate and spaced apart in a third direction, and the third direction is perpendicular to the first direction and the second direction.

[0031] The L-shaped stopper of the embodiment can reduce weight, facilitate connection with the mounting frame, and also increase the structural strength of the stopper and improve the ability to resist deformation, so as to provide more stable support force for the beam.

[0032] In some embodiments, the stopper and the mounting frame are connected by welding, bolting or riveting.

[0033] The embodiment connects the stop block to the mounting frame by welding, which can increase the connection strength of the stop block, and make the stop block and the mounting frame integrally connected; the stop block is connected to the mounting frame by bolts, which is convenient for disassembly and adjustment, and can make the stop block as close as possible to the side of the beam near the blocking part, so as to provide better blocking effect; the stop block is connected to the mounting frame by rivets, which is convenient and efficient, and the connection strength is stable and reliable.

[0034] In some embodiments, the accommodating component includes a metal material layer and two composite material layers, and the metal material layer is clamped between the two composite material layers.

[0035] In the embodiment, the accommodating component adopts the layer structure of clamping the metal material layer by two composite material layers, which can not only reduce the weight, but also increase the structural rigidity of the accommodating component itself, so that when the beam needs to be connected with the accommodating component, the connection hole position is not easy to be pulled and broken by the beam under the action of the battery monomer expansion force, resulting in structural failure, and the connection reliability can be improved. Moreover, the protection capability of the bottom of the accommodating component can be effectively improved.

[0036] In some embodiments, the battery device further includes a plurality of fasteners, the beam adopts a hollow structure, and the bottom wall of the accommodating component and the bottom wall of the beam are sealingly connected by the fasteners.

[0037] In the embodiment, the beam is fixed from the bottom wall of the accommodating component, and the fastener only penetrates the bottom wall of the accommodating component and the bottom wall of the beam, so that the length of the fastener can be shortened, the installation is facilitated, the fastener does not need to penetrate the entire height of the beam, and the sealing is more easily guaranteed, thereby guaranteeing the waterproof capability of the entire box assembly.

[0038] According to a second aspect of the present application, a power device is provided, which includes the battery device of the above-mentioned embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0039] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments of the present application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creating labor.

[0040] Figure 1 It is a structural schematic diagram of some embodiments of the power device of the present application.

[0041] Figure 2 It is a structural schematic diagram of some embodiments of the box of the battery device of the present application.

[0042] Figure 3 It is an enlarged view of K in Figure 2

[0043] ​Figure 4 Figure 1 is a perspective view of a housing.

[0044] Figure 5 Figure 2 is a perspective view of a housing with a mount and a beam.

[0045] Figure 3 is a perspective view of a housing with a mount and a beam.

[0046] Figure 7 Figure 4 is a perspective view of a housing with a mount and a beam.

[0047] Figure 8 Figure 5 is a perspective view of a housing with a mount and a beam.

[0048] Figure 9 Figure 6 is an exploded view of a housing with a mount and a beam.

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

[0050] Legend:

[0051] 10. Housing;

[0052] 1. Mount; 11. Vertical plate; 12. First support plate; 13. Second support plate; 131. First hole; 14. Connection plate; 141. Third hole;

[0053] 2. Containment component; 21. Flange; 211. Second hole; 22. Concave portion;

[0054] 3. Beam;

[0055] 4. Containment space;

[0056] 5. Blocking portion;

[0057] 6. Stop; 61. First plate; 62. Second plate; 63. Reinforcing plate;

[0058] 7. Lugs;

[0059] 8. Cooling plate;

[0060] 9. Fastener;

[0061] 91. Fluid distribution channel; 92. Fluid collection channel;

[0062] 100. Battery device;

[0063] 200. Vehicle; 201. Cabin; 202. Floor;

[0064] x. First direction; z. Second direction; y. Third direction. DETAILED DESCRIPTION

[0065] The embodiments of the present application will be described in further detail below with reference to the accompanying drawings and examples. The following detailed description of the examples and the accompanying drawings are provided for the purpose of illustration only and are not intended to limit the scope of the present application, that is, the present application is not limited to the examples described.

[0066] In the description of the embodiments of the present application, the term "a plurality of" refers to two or more (including two), and similarly, "a plurality of groups" refers to two or more groups (including two groups), and "a plurality of pieces" refers to two or more pieces (including two pieces).

[0067] The present application uses the description of the orientation or position relationship of the terms "upper", "lower", "top", "bottom", "front", "back", "inner" and "outer" and the like, which is only for the convenience of describing the present application, and does not indicate or imply that the device referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the scope of protection of the present application.

[0068] In addition, the terms "first", "second", "third" and the like are only for the purpose of description and cannot be understood as indicating or implying relative importance. "Vertical" is not strictly vertical, but within the allowable range of error. "Parallel" is not strictly parallel, but within the allowable range of error. The orientation words appearing in the following description are the directions shown in the figure, and are not limited to the specific structure of the present application.

[0069] In the description of the present application, it should be further explained that, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be directly connected, or indirectly connected through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0070] Reference to "an embodiment" herein means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearance of the phrase in various places in the specification does not necessarily all refer to the same embodiment, nor is it necessarily independent or alternative embodiments to other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0071] The battery cell can include a lithium-ion secondary battery, a lithium-ion primary battery, a lithium-sulfur battery, a sodium lithium-ion battery, a sodium-ion battery, or a magnesium-ion battery, etc. The embodiments of the present application are not limited thereto. The battery cell can be in the shape of a cylinder, a flat body, a cuboid, or other shapes, etc. The embodiments of the present application are not limited thereto. The battery cell is generally divided into three types according to the packaging method: cylindrical battery cells, square battery cells, and soft-pack battery cells, etc. The embodiments of the present application are not limited thereto. The current battery cell generally includes a shell and an electrode assembly accommodated in the shell, and the shell is filled with an electrolyte.

[0072] The current battery cell generally includes a shell and an electrode assembly accommodated in the shell, and the shell is filled with an electrolyte. The electrode assembly is mainly formed by laminating or winding a first pole piece and a second pole piece with opposite polarities, and a separator is generally arranged between the first pole piece and the second pole piece. The coated parts of the first pole piece and the second pole piece constitute the main body of the electrode assembly, and the uncoated parts of the first pole piece and the second pole piece each constitute a first pole tab and a second pole tab. In a lithium-ion battery, the first pole piece can be a positive pole piece including a positive pole current collector and positive pole coating layers arranged on both sides of the positive pole current collector, and the material of the positive pole current collector can be, for example, aluminum, and the positive pole coating can be, for example, lithium cobaltate, lithium iron phosphate, ternary lithium, or lithium manganate, etc. The second pole piece can be a negative pole piece including a negative pole current collector and negative pole coating layers arranged on both sides of the negative pole current collector, and the material of the negative pole current collector can be, for example, copper, and the negative pole coating layer can be, for example, graphite or silicon, etc. The first pole tab and the second pole tab can be located at one end of the main body or at two ends of the main body, respectively. During the charging and discharging process of the battery cell, the positive pole coating layer and the negative pole coating layer react with the electrolyte, and the pole tabs connect the electrode lead-out part to form a current loop.

[0073] With the increasing demand for lightweight of electric vehicles year by year, higher requirements for the lightweight of the battery device are also put forward. In order to reduce the weight of the battery device, one of the current methods is to use a box body containing a composite material layer. However, when the beam is arranged in the box body, since the composite material cannot be welded with metal, or even if it is connected through a fastener, it is difficult to have high connection strength, and when the battery cell expands, the beam may be inclined or tilted, thereby greatly limiting the application of the composite box body.

[0074] Therefore, in order to solve the problem of affecting the connection reliability of the beam and the box body when the battery cell expands, an improved battery device is proposed.

[0075] The battery device of the embodiments of the present application is suitable for various electric devices. The electric device can be a mobile phone, a portable device, a notebook computer, an electric vehicle, an electric vehicle, a ship, a spacecraft, an electric toy, and an electric tool, etc.

[0076] As Figure 1As shown, the power utilization device can be a vehicle 200, for example, a new energy vehicle, which can be a pure electric vehicle, a hybrid vehicle, or a range extended vehicle, etc. Or the power utilization device can be a drone or a ship, etc. The vehicle 200 can include a cabin 201 and a vehicle floor 202, and the battery device 100 is arranged between the cabin 201 and the vehicle floor 202. The battery device 100 can be arranged at the bottom, head or tail of the vehicle 200, for providing power for the operation of the motor and other components in the vehicle.

[0077] The present application provides a battery device 100, as shown in the accompanying drawings, Figure 2 As shown, the battery device 100 includes a box assembly, which includes:

[0078] a box 10 having a cavity, a side wall of the cavity is provided with a plurality of blocking parts 5, the blocking parts 5 protrude into the cavity; and

[0079] a plurality of beams 3 are arranged in the cavity and connected to the box 10 along a first direction x, the beams 3 extend along a second direction y, the second direction y is perpendicular to the first direction x, and a containing space 4 for placing a battery monomer is formed between adjacent two beams 3;

[0080] Among them, the plurality of blocking parts 5 are located at the outer side of the outermost beam 3, and the blocking part 5 abuts against the outer surface of the beam 3.

[0081] Specifically, the cavity inside is used to contain a plurality of battery monomers, according to the shape, number, combination mode and other requirements of the contained battery monomers, the box 10 can also have different shapes and sizes, for example, the box 10 is in the shape of a rectangle as a whole. Further, the battery device 100 further includes a cover body for closing the opening of the box 10. In order to facilitate the maintenance of the battery device 100, the box 10 is detachably mounted on the power utilization device.

[0082] The plurality of beams 3 are arranged in the cavity and connected to the box 10 along a first direction x, and a containing space 4 for placing a battery monomer is formed between adjacent two beams 3, and one or more battery monomers can be arranged in each containing space. For example, two, three or more beams 3 can be arranged in the box 10. The outermost beam 3 and the side wall of the box 10 closest to the beam 3 along the first direction x have a reserved space.

[0083] The side wall of the cavity is provided with a plurality of blocking parts 5, the blocking parts 5 protrude into the cavity, for example, the blocking parts 5 can be in the shape of a cuboid, the blocking parts 5 are in contact with the outer surface of the beam 3, and are used to abut against the outer side of the end of the beam 3. There are two beams 3 located at the outermost side in the box 10, and the outer side of each beam 3 is provided with a blocking part 5.

[0084] Preferably, the blocking portion 5 is arranged close to the inner bottom surface of the box body 10 to achieve better anti-tilting effect. The blocking portion 5 can be connected to the bottom wall of the box body 10 to increase the structural strength of the connection between the blocking portion 5 and the box body 10.

[0085] For example, a plurality of battery cells in the same accommodating space 4 can be arranged in one group, or a plurality of groups are arranged side by side along the second direction y, each group of battery cells includes a plurality of battery cells arranged side by side and stacked along the first direction x, and the battery cells are vertically arranged, i.e., the thickness direction of the battery cells is consistent with the first direction x. The plurality of battery cells are constrained in the accommodating space 4 by the two adjacent beams 3, and when the battery cells swell, the swelling force is applied to the beams 3 along the first direction x.

[0086] The plurality of battery cells can be connected in series, in parallel, or in a mixed manner. The mixed manner means that some of the plurality of battery cells are connected in series and some are connected in parallel. The plurality of battery cells can be connected in series, in parallel, or in a mixed manner to form a battery module, and a plurality of battery modules are connected in series, in parallel, or in a mixed manner to form an integral whole, which is accommodated in the box body 10. Alternatively, all the battery cells can be directly connected in series, in parallel, or in a mixed manner, and the integral whole formed by the battery cells is accommodated in the box body 10.

[0087] The battery cells can be lithium ion secondary batteries, lithium ion primary batteries, lithium-sulfur batteries, sodium ion batteries, or magnesium ion batteries, etc.

[0088] The embodiment can abut the outer surface of the outermost beam 3 by arranging the blocking portion 5 on the inner side wall of the box body 10, which can reduce the requirement for the connection strength between the beam 3 and the box body 10. When the battery cells in the outermost accommodating space 4 swell, an outward tilting force is applied to the beam 3, and the abutting effect of the blocking portion 5 can prevent the beam 3 from loosening, tilting, or tilting. For the middle beam 3, the battery cells in the accommodating spaces 4 on both sides of the beam 3 swell at the same time, and the force is applied to the beam 3 from both sides, so it is not easy to loosen, tilt, or tilt. Therefore, the blocking portion 5 can be omitted to reduce the occupation of the accommodating space 4, or the blocking portion 5 can be arranged on both sides of the middle beam 3. Thus, the structural reliability of the connection between the box body 10 and the beam 3 can be improved, thereby improving the reliability of the battery device.

[0089] In some embodiments, as shown in Figure 2 and Figure 3 a plurality of blocking portions 5 are arranged on the side wall extending along the first direction x of the cavity.

[0090] Optionally, the blocking portion 5 can also be arranged on the side wall extending along the second direction y of the cavity.

[0091] The embodiment sets the plurality of blocking portions 5 on the side wall of the cavity extending along the first direction x, so that the entire side surface of the blocking portion 5 is used to apply the blocking force to the beam 3, the anti-tilting effect of the beam 3 is optimized, and the blocking portion 5 is only located in the corner region between the side wall of the box body 10 and the outer side surface of the beam 3, and does not affect the arrangement of other accessories in the region between the outermost beam 3 and the side wall of the box body 10.

[0092] In some embodiments, the outermost beam 3 is provided with the blocking portion 5 at both ends along the second direction y.

[0093] The embodiment sets the blocking portion 5 at both ends of the outermost beam 3, and the two blocking portions 5 apply the blocking force to both ends of the outer surface of the beam 3, so as to prevent the beam 3 from tilting in the horizontal plane under the expansion force of the battery monomer.

[0094] In some embodiments, as shown in Figure 4 The box body 10 comprises:

[0095] two mounting frames 1, which are spaced apart along the second direction y and extend along the first direction x; and

[0096] a containing component 2 supported between the two mounting frames 1, the containing component 2 being used to form a cavity, and the containing component 2 comprising a composite material layer;

[0097] The plurality of blocking portions 5 are arranged on the containing component 2, and the plurality of beams 3 are arranged in the containing component 2.

[0098] Specifically, the mounting frame 1 is made of metal, which can be made of steel or aluminum, for example, by rolling steel or aluminum profile extrusion. The two mounting frames 1 are open at both ends along the first direction x, and the containing component 2 is placed between the two mounting frames 1 from the top, so as to be supported between the two mounting frames 1.

[0099] For example, the blocking portion 5 and the containing component 2 can be integrally formed.

[0100] The embodiment designs the box body 10 as a structure combined by the mounting frame 1 and the containing component 2. By arranging the containing component 2 made of composite material, the weight of the box body 10 can be reduced, and the connection reliability of the battery device during installation can be increased. Since the containing component 2 made of composite material cannot be welded with the beam 3, it is difficult to ensure the connection reliability of the beam 3 and the containing component 2. By arranging the plurality of blocking portions 5 on the inner side wall of the containing component 2, the connection reliability of the beam 3 and the containing component 2 can be improved.

[0101] In some embodiments, as shown in Figure 5 to Figure 7 The blocking portion 5 is formed by protruding inwardly through the side wall of the containing component 2, and a recessed portion 22 is formed on the outer side of the containing component 2, and the recessed portion 22 is open at the side and the bottom of the containing component 2.

[0102] The box 10 further comprises a plurality of stop blocks 6 connected to the two mounting frames 1 and arranged in one-to-one correspondence with the plurality of blocking portions 5, the stop blocks 6 being embedded in the corresponding recesses 22 from the outside of the containing component 2.

[0103] For example, the stop blocks 6 can be made of metal, and the stop blocks 6 are shaped to fit the recesses 22, so that the stop blocks 6 can form support for the blocking portions 5 from the recesses 22. The side of the stop blocks 6 close to the beams 3 is in contact with the side of the recesses 22, so that the stop blocks 6 can form effective blocking force for the beams 3 through the blocking portions 5.

[0104] This embodiment can play a supporting and strengthening role for the blocking portions 5 by arranging the blocking portions 5 on the inner side of the mounting frames 1 and embedding the blocking portions 5 in the recesses 22, so that the blocking portions 5 can reliably prevent the beams 3 from tipping over. Moreover, the recesses 22 are open on the side and bottom of the containing component 2, so that the containing component 2 can be installed from top to bottom without being affected by the stop blocks 6. In addition, such recesses 22 can ensure the structural integrity of the containing component 2 and will not damage the sealing performance of the containing component 2.

[0105] In some embodiments, as shown in Figs. 1-3, the containing component 2 has an opening and is provided with a flange 21 at the opening, and the mounting frame 1 comprises: Figure 6 Figure 7 a vertical plate 11;

[0106] a first support plate 12 connected to a first end of the vertical plate 11 and extending inward, configured to support the bottom of the containing component 2; and

[0107] a second support plate 13 connected to a second end of the vertical plate 11 and extending outward, configured to support the flange 21.

[0108] In some embodiments, the stop block 6 is connected between the vertical plate 11 and the first support plate 12.

[0109] For example, the vertical plate 11 is arranged perpendicular to the second direction y, and the first support plate 12 and the second support plate 13 are arranged perpendicular to the third direction z, so that the mounting frame 1 forms a Z shape. A plurality of first holes 131 are arranged on the second support plate 13 along the first direction x, and a plurality of second holes 211 are arranged on the flange 21 of the containing component 2 along the circumferential direction, and the fasteners pass through the first holes 131 and the second holes 211 to fix the containing component 2 to the mounting frame 1, at this time, the bottom wall of the containing component 2 is supported on the first support plate 12. The stop block 6 is connected between the vertical plate 11 and the first support plate 12.

[0110] For example, the vertical plate 11 is arranged perpendicular to the second direction y, and the first support plate 12 and the second support plate 13 are arranged perpendicular to the third direction z, so that the mounting frame 1 forms a Z shape. A plurality of first holes 131 are arranged on the second support plate 13 along the first direction x, and a plurality of second holes 211 are arranged on the flange 21 of the containing component 2 along the circumferential direction, and the fasteners pass through the first holes 131 and the second holes 211 to fix the containing component 2 to the mounting frame 1, at this time, the bottom wall of the containing component 2 is supported on the first support plate 12. The stop block 6 is connected between the vertical plate 11 and the first support plate 12.

[0111] ​Further, the mounting rack 1 further comprises a connecting plate 14 arranged on the outer side of the upright plate 11, and a plurality of third holes 141 are arranged on the connecting plate 14 in the first direction x, and the fasteners pass through the third holes 141 and the holes on the mounting base of the electric device, so that the battery device is detachably arranged on the mounting base. For example, the electric device is a vehicle, and the connecting plate 14 is arranged on the vehicle body.

[0112] The mounting rack 1 of the embodiment can conveniently mount the composite material containing part 2 from top to bottom, and the bottom of the containing part 2 can be directly supported on the first support plate 12, so that the mounting rack 1 can provide stable support for the containing part 2 and reliably bear the battery monomer with large weight. The stop block 6 is connected between the upright plate 11 and the first support plate 12, which not only can increase the strength of the mounting rack 1, but also can be embedded in the recessed portion 22 outside the blocking portion 5 to strengthen the blocking portion 5, thereby achieving better anti-tilting effect.

[0113] In some embodiments, the stop block 6 comprises:

[0114] a first plate 61 extending in the first direction x;

[0115] a second plate 62 connected to one end of the first plate 61 close to the beam 3 in the first direction x, and the second plate 62 is perpendicular to the first plate 61; and

[0116] a plurality of reinforcing plates 63, each connected between the first plate 61 and the second plate 62 and arranged in the third direction z, and the third direction z is perpendicular to the first direction x and the second direction y.

[0117] Among them, the reinforcing plate 63 can be in a triangular structure, the lowermost reinforcing plate 63 can be arranged in close contact with the first support plate 12, and the uppermost reinforcing plate 63 can be arranged at the top of the first plate 61 and the second plate 62.

[0118] For example, the stop block 6 can be made of metal material, such as aluminum or steel.

[0119] Alternatively, the stop block 6 can also form a hollow cuboid structure, and a plurality of reinforcing plates 63 are arranged inside.

[0120] The L-shaped stop block 6 of the embodiment can reduce the weight, facilitate connection with the mounting rack 1, and also increase the structural strength of the stop block 6 and improve the ability to resist deformation, so as to provide more stable support force for the beam 3.

[0121] In some embodiments, the stop block 6 and the mounting rack 1 are connected by welding, bolting or riveting.

[0122] The embodiment connects the stop block 6 to the mounting frame 1 by welding, which can increase the connection strength of the stop block 6 and make the stop block 6 and the mounting frame 1 integrally connected; the stop block 6 is connected to the mounting frame 1 by bolts, which is convenient for disassembly and adjustment of the position of the stop block 6, so that the stop block 6 is as close as possible to the side of the beam 3 near the blocking part 5, and a better blocking effect is provided; the stop block 6 is connected to the mounting frame 1 by rivets, which is convenient and efficient in operation and stable and reliable in connection strength.

[0123] In some embodiments, the containing component 2 comprises a metal material layer and two composite material layers, and the metal material layer is sandwiched between the two composite material layers.

[0124] For example, the composite material layer is an epoxy / polyurethane resin mixed continuous fiber or a chopped fiber, and the fiber material is glass fiber, carbon fiber or basalt fiber, etc. The metal material layer is a steel plate or an aluminum plate, and the metal material layer plays a reinforcing role.

[0125] In this embodiment, the containing component 2 adopts a layer structure of two composite material layers sandwiching a metal material layer, which can not only reduce the weight but also increase the structural rigidity of the containing component 2 itself, so that when the beam 3 needs to be connected with the containing component 2, the connection hole position is not easy to be pulled and broken by the beam 3 under the action of the battery monomer swelling force, resulting in structural failure, and the connection reliability can be improved. Moreover, the protection capability of the bottom of the containing component 2 can also be effectively improved.

[0126] In some embodiments, as shown in Figure 9 The battery device further comprises a plurality of fasteners 9, the beam 3 adopts a hollow structure, and the bottom wall of the containing component 2 is sealingly connected with the bottom wall of the beam 3 through the fasteners 9.

[0127] The beam 3 adopts a hollow structure, and a plurality of partitions are arranged inside the beam 3 along the third direction z to play a reinforcing role.

[0128] For example, the fastener 9 can be a pull rivet nut, and a rubber or a sealing ring is coated on the bottom of the flange surface of the nut, which can ensure the sealing performance of the mounting hole.

[0129] In this embodiment, the beam 3 is fixed from the bottom wall of the containing component 2, and the fastener 9 only penetrates the bottom wall of the containing component 2 and the bottom wall of the beam 3, which can shorten the length of the fastener 9, facilitate installation, and does not need to make the fastener 9 penetrate the entire height of the beam 3. Moreover, the fastener 9 only penetrates the bottom wall of the beam 3, and the sealing is easier to ensure, thereby ensuring the waterproof capability of the entire box assembly.

[0130] In some specific embodiments, as shown in Figure 2 to Figure 9As shown, the battery device of the present application comprises a box assembly, the box assembly comprises a box 10 and a plurality of beams 3, the box 10 comprises two mounting frames 1 and a containing part 2, the two mounting frames 1 are spaced apart along the second direction y, and the mounting frames 1 extend along the first direction x, the containing part 2 is supported on the first support plates 12 of the two mounting frames 1, and the flanges 21 of the containing part 2 are lapped on the second support plates 13. The containing part 2 comprises two composite material layers and a metal material layer sandwiched therebetween, and the mounting frames 1 are made of metal material. The plurality of beams 3 are arranged in the containing part 2.

[0131] A plurality of blocking parts 5 are arranged on the side walls of the containing part 2 extending along the first direction x, the blocking parts 5 are formed by inwardly protruding from the side walls of the containing part 2, and recessed parts 22 are formed on the outside of the containing part 2, the recessed parts 22 are open on both the side and the bottom of the containing part 2. A plurality of stop blocks 6 are arranged on the mounting frames 1, and correspond to the plurality of blocking parts 5 one by one, the stop blocks 6 are embedded into the corresponding recessed parts 22 from the outside of the containing part 2.

[0132] Optionally, the top of the two beams 3 on the outside is provided with a mounting hole for mounting a pull rope, and the two ends of the pull rope are connected to the two beams 3 on the outside, so as to limit the top of the battery monomer along the third direction z.

[0133] Optionally, the containing part 2 is provided with lugs 7 on the side walls at both ends along the first direction x, for example, two lugs 7 are spaced apart along the second direction y on each side wall, for hoisting the battery device.

[0134] Optionally, a plurality of recesses are arranged in the containing part 2 of the box 10 along the second direction y, and one cooling plate 8 is arranged in each recess, the top surface of the cooling plate 8 is flush with the inner bottom surface of the containing part 2, forming an overall flat surface for mounting the battery monomer. The plurality of cooling plates 8 are respectively provided with a fluid distribution channel 91 and a fluid collection channel 92 at both ends along the first direction x, the fluid distribution channel 91 and the fluid collection channel 92 both extend along the second direction y, the fluid distribution channel 91 is used for distributing the cooling medium introduced into the plurality of cooling plates 8, and the fluid collection channel 92 is used for collecting and discharging the cooling medium after heat exchange with the battery monomer in the plurality of cooling plates 8.

[0135] Among the two beams 3 on the outermost side, one beam 3 is arranged close to the fluid distribution channel 91, and has a predetermined space between the side wall of the containing part 2, for placing a high-voltage box, a wiring or a cooling liquid supply pipeline; the other beam 3 is arranged close to the fluid collection channel 92, and has a predetermined space between the side wall of the containing part 2, for placing a wiring or a cooling liquid supply pipeline.

[0136] Although the present application has been described with reference to preferred embodiments, various modifications can be made to the application without departing from the scope of the application. In particular, the technical features mentioned in the various embodiments can be combined in any way, provided that there is no structural conflict. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A battery device, characterized by, The box assembly comprises: a box (10) having a cavity, a side wall of the cavity being provided with a plurality of blocking portions (5) protruding inwardly into the cavity; and a plurality of beams (3) spaced apart in a first direction (x) within the cavity and connected to the box (10), the beams (3) extending in a second direction (y) perpendicular to the first direction (x), and a containing space (4) for placing a battery monomer being formed between two adjacent beams (3); wherein the plurality of blocking portions (5) are located at least outside the outermost beams (3), and the blocking portions (5) abut the outer surfaces of the beams (3); the box (10) comprises: two mounting racks (1) spaced apart in the second direction (y) and extending in the first direction (x); and a containing component (2) supported between the two mounting racks (1), the containing component (2) being used to form the cavity, and the containing component (2) comprising a composite material layer; wherein the plurality of blocking portions (5) are provided on the containing component (2), and the plurality of beams (3) are arranged within the containing component (2).

2. The battery device of claim 1, wherein The plurality of blocking portions (5) are arranged on the side wall of the cavity extending in the first direction (x).

3. The battery device of claim 1, wherein The outermost beams (3) are each provided with the blocking portion (5) at both ends in the second direction (y).

4. The battery device of claim 1, wherein The blocking portions (5) are formed by the side wall of the containing component (2) protruding inwardly, and a recess (22) is formed outside the containing component (2), the recess (22) being open at the side and bottom of the containing component (2); The box (10) further comprises a plurality of stop blocks (6) connected to the two mounting racks (1) and corresponding to the plurality of blocking portions (5), the stop blocks (6) being embedded in the corresponding recesses (22) from the outside of the containing component (2).

5. The battery device of claim 4, wherein The containing component (2) has an opening and is provided with a flange (21) at the opening, and the mounting rack (1) comprises: a vertical plate (11); a first support plate (12) connected to a first end of the vertical plate (11) and extending inwardly, configured to support the bottom of the containing component (2); and a second support plate (13) connected to a second end of the vertical plate (11) and extending outwardly, configured to support the flange (21); wherein the stop block (6) is connected between the vertical plate (11) and the first support plate (12).

6. The battery device of claim 4, wherein The stop block (6) comprises: a first plate (61) extending in the first direction (x); a second plate (62) connected to one end of the first plate (61) close to the beam (3) in the first direction (x), and the second plate (62) being perpendicular to the first plate (61); and a plurality of reinforcing plates (63) each connected between the first plate (61) and the second plate (62) and spaced apart in a third direction (z) perpendicular to the first direction (x) and the second direction (y).

7. The battery device of claim 4, wherein The stopper (6) is connected with the mounting frame (1) by welding, bolting or riveting.

8. The battery device of claim 1, wherein The containing part (2) comprises a metal material layer and two composite material layers, and the metal material layer is sandwiched between the two composite material layers.

9. The battery device of claim 8, wherein, A plurality of fasteners (9) are further included, the beam (3) adopts a hollow structure, and the bottom wall of the containing part (2) is sealingly connected with the bottom wall of the beam (3) through the fasteners (9).

10. An electrical device, characterized by The battery device comprises the battery device according to any one of claims 1-9.

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