Battery box body and battery system

Abstract

The utility model provides a battery box and a battery system, and belongs to the technical field of power batteries. The battery box body comprises a frame assembly, a plurality of supporting cross beams, a plurality of module mounting beams and a bottom protection plate, a cavity is formed in the frame assembly. The multiple supporting cross beams are arranged in the cavity in parallel at intervals, the two ends of each supporting cross beam are connected with the frame assembly, and each supporting cross beam is made of composite materials. The module mounting beams are located in the cavity, at least part of the module mounting beams are located below the supporting cross beams, and at least part of the module mounting beams are perpendicular to the supporting cross beams. The bottom protection plate is located below the frame assembly, and the frame assembly, the supporting cross beams, the module installation beams and the bottom protection plate jointly define a plurality of battery grooves for installing batteries. The battery box body is used as a bearing part of the power battery, the supporting cross beam is prepared from the composite material, so that the battery box body is lighter, other parts are used for dispersing the stress of the supporting cross beam, and the overall modal is improved.

Description

Technical Field

[0001] The present application relates to the technical field of power batteries, and in particular to a battery box and a battery system. Background Art

[0002] With the continuous advancement of science and technology and the diversification of user needs, new energy power battery technology has also experienced rapid development. New energy power battery packs are typically housed in battery enclosures, which serve as carriers for the power batteries and facilitate the installation of battery components. The evolution of battery enclosure structures from initially pursuing lightweight design to also focusing on cost reduction is a trend that is shaping the development of the new energy industry.

[0003] Previously, most battery cases were made from either aluminum extrusion and welding or steel stamping. The former offers lightweight properties but is more expensive, while the latter offers some cost savings but is heavier. Combining the performance characteristics of both, current battery cases are made from roll-formed steel.

[0004] However, in current roll-formed steel boxes, the internal crossbeams are typically made of roll-formed, one-piece steel without a stress-distributing structure. This structure is not conducive to lightweight battery box design and results in poor box modal properties. Furthermore, the bottom guard plate, liquid cooling plate, and frame components are commonly connected using flow drill screws (FDS) and welding, a cost-increasing connection method. Therefore, the development of lighter, lower-cost, high-strength battery box structures remains to be seen. Utility Model Content

[0005] The present application provides a battery box and a battery system. The battery box is used as a carrier for the power battery, and the supporting beam is made of composite materials, thereby making the battery box lighter. Other components in the battery box disperse the stress of the supporting beam and improve the overall modality.

[0006] In order to achieve the above objectives, this application provides the following technical solutions:

[0007] A first aspect of the present application provides a battery box, comprising:

[0008] A frame assembly, wherein the frame assembly has a cavity therein;

[0009] A plurality of supporting beams, each of which is parallel to and spaced apart from the other, is disposed in the cavity, both ends of each supporting beam being connected to the frame assembly, and each supporting beam being made of a composite material;

[0010] a plurality of module mounting beams, wherein the plurality of module mounting beams are located in the cavity, at least some of the module mounting beams are located below the support beams, and at least some of the module mounting beams are arranged perpendicular to the support beams;

[0011] Bottom guard plate, the bottom guard plate is located under the frame assembly;

[0012] The frame components, supporting beams, module mounting beams and bottom guard plates together form a plurality of battery slots for installing batteries.

[0013] Based on the above technical solution, this application can also be improved as follows.

[0014] In a possible implementation, the frame assembly includes: a first frame, two second frames, two third frames, and a fourth frame;

[0015] Two ends of the first frame are connected to the two second frames, the two second frames are respectively connected to the two third frames, and the two third frames are connected to two ends of the fourth frame;

[0016] Each second frame has two U-shaped plates arranged opposite to each other inside to increase the strength of the second frame.

[0017] In a possible implementation, the module mounting beam includes: a first mounting longitudinal beam, two second mounting longitudinal beams, four third mounting longitudinal beams, and two mounting transverse beams;

[0018] A first avoidance opening is formed on a side of each supporting crossbeam facing the first mounting longitudinal beam, so that the first mounting longitudinal beam passes through the first avoidance opening and is arranged on the supporting crossbeam, and both ends of the first mounting longitudinal beam are respectively connected to the first frame and the fourth frame;

[0019] The two second mounting longitudinal beams are respectively located at both ends of the supporting crossbeam, and each supporting crossbeam is provided with a second avoidance opening on both sides of the second mounting longitudinal beam, so that the two second mounting longitudinal beams pass through the second avoidance opening and are arranged on the supporting crossbeam, and the two second mounting longitudinal beams are both located on the inner sides of the two second frame frames;

[0020] One end of each third mounting longitudinal beam is connected to the fourth frame, and the other end of each third mounting longitudinal beam is connected to one of the supporting cross beams;

[0021] The mounting cross beam is arranged perpendicularly to the first mounting longitudinal beam and the second mounting longitudinal beam.

[0022] In a possible implementation, the bottom guard plate includes: a plate body;

[0023] The plate body is provided with a number of reinforcing ribs and a number of mounting holes;

[0024] The mounting holes are used for mounting with the support beams and module mounting beams.

[0025] In one possible implementation, the battery box further includes: a sealing member;

[0026] The outer peripheral side of the plate body has a protrusion, the outer peripheral side of the sealing member has a first sealing portion, and the first sealing portion cooperates with the protrusion;

[0027] The sealing member is provided with a plurality of second sealing portions, and each second sealing portion corresponds to each mounting hole.

[0028] In one possible implementation, the battery box further includes: a liquid cooling plate, wherein the sealing member is located between the liquid cooling plate and the bottom guard plate;

[0029] The liquid cooling plate includes a base plate and a flow channel plate;

[0030] The substrate is located on the flow channel plate, and a flow channel for liquid flow is opened on the flow channel plate, and the flow channel has a liquid inlet end and a liquid outlet end;

[0031] A liquid inlet and a liquid outlet are provided on the substrate, and the liquid inlet and the liquid outlet are communicated with the liquid inlet end and the liquid outlet end respectively.

[0032] In a possible implementation, the battery box further includes: two lifting ear assemblies, the two lifting ear assemblies being respectively located on the outer sides of the two second frames;

[0033] Each lifting lug assembly includes: a base plate, a forming tube and a bushing;

[0034] The bushing is located on the forming tube, the forming tube is located on the bottom plate, and the bottom plate is fixedly connected to the second frame.

[0035] In one possible implementation, the battery box further includes: a plurality of adapter plates;

[0036] The adapter plate is located in the cavity of the frame assembly, and the adapter plate is used to connect the frame assembly to the supporting beam.

[0037] In one possible implementation, the battery box further includes: an exhaust structure;

[0038] An exhaust hole is provided on one of the frames of the frame assembly, and the exhaust structure is connected to the exhaust hole.

[0039] A second aspect of the present application provides a battery system, comprising a battery and at least one battery box as described above;

[0040] The battery is located in the battery compartment of the battery box.

[0041] The present application provides a battery case and a battery system, which includes a frame assembly, several supporting beams, several module mounting beams, and a bottom guard plate. The frame assembly has a cavity inside. Several supporting beams are arranged in parallel and at intervals within the cavity. Each supporting beam is connected to the frame assembly at both ends, and each supporting beam is made of a composite material. Several module mounting beams are located within the cavity, with at least some of the module mounting beams located below the supporting beams, and at least some of the module mounting beams are arranged perpendicular to the supporting beams. The bottom guard plate is located below the frame assembly. The frame assembly, supporting beams, module mounting beams, and bottom guard plate together form several battery slots for battery installation. The battery system includes batteries and at least one of the above-mentioned battery cases. The batteries are located in the battery slots of the battery case. In this way, the present application can use the battery case as a carrier for the power battery, and the supporting beams are made of composite materials, making the battery case more lightweight. Other components within the battery case disperse the stress of the supporting beams, improving the overall modality. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0043] Figure 1 A schematic diagram of the overall structure of a battery box provided in one embodiment of the present application;

[0044] Figure 2 This is an exploded schematic diagram of a battery box provided in one embodiment of the present application;

[0045] Figure 3 A schematic structural diagram of a frame assembly in a battery box according to an embodiment of the present application;

[0046] Figure 4 A side cross-sectional view of a second frame of a battery box provided in an embodiment of the present application;

[0047] Figure 5 A top view of a battery box provided in one embodiment of the present application;

[0048] Figure 6 A schematic structural diagram of a supporting beam in a battery box according to an embodiment of the present application;

[0049] Figure 7 A top view of a battery box provided in one embodiment of the present application;

[0050] Figure 8 for Figure 7 Schematic diagram of the cross section of AA;

[0051] Figure 9 for Figure 8 A partial enlarged view of middle B;

[0052] Figure 10 A schematic diagram of the structure of the bottom guard plate of the battery box provided in one embodiment of the present application;

[0053] Figure 11 A schematic structural diagram of a sealing member in a battery box according to an embodiment of the present application;

[0054] Figure 12 This is an exploded schematic diagram of a liquid cooling plate in a battery box provided in one embodiment of the present application;

[0055] Figure 13 A schematic structural diagram of a lifting ear assembly in a battery box according to an embodiment of the present application;

[0056] Figure 14 A side cross-sectional view of a support beam in a battery box provided in one embodiment of the present application.

[0057] Description of reference numerals:

[0058] 100-battery box;

[0059] 200-border component;

[0060] 210 - cavity; 220 - first frame; 230 - second frame; 231 - U-shaped plate; 240 - third frame; 250 - fourth frame; 260 - exhaust hole; 270 - sealant; 280 - battery slot;

[0061] 300-support beam;

[0062] 310-first avoidance port; 320-second avoidance port; 330-long screw; 340-cavity hole;

[0063] 400-module mounting beam;

[0064] 410 - first mounting longitudinal beam; 420 - second mounting longitudinal beam; 430 - third mounting longitudinal beam; 440 - mounting cross beam; 450 - rivet nut;

[0065] 500- bottom guard plate;

[0066] 510 - plate; 511 - reinforcement rib; 511a - transverse reinforcement rib; 511b - longitudinal reinforcement rib; 512 - mounting hole; 513 - fixing hole; 520 - protrusion; 530 - bolt;

[0067] 600-seals;

[0068] 610-first sealing portion; 620-second sealing portion;

[0069] 700-Liquid Cooling Plate;

[0070] 710-base plate; 711-liquid inlet; 712-liquid outlet; 720-flow channel plate; 721-flow channel; 722-liquid inlet end; 723-liquid outlet end; 730-liquid inlet nozzle; 740-liquid outlet nozzle;

[0071] 800-lifting eye assembly;

[0072] 810-base plate; 820-molding tube; 830-bushing;

[0073] 900-Adapter plate. DETAILED DESCRIPTION

[0074] As described in the background technology, in the current roll-formed steel box, the crossbeams inside the box are usually made of roll-formed one-piece steel without a stress dispersion structure. This structure is not conducive to the lightweight design of the battery box, and the box modality is poor. In addition, the bottom guard plate, liquid cooling plate and frame components generally use flow drill screw connection technology (Flow drill screw, FDS) plus welding. This connection method increases the cost. Therefore, the preparation of a lighter, lower-cost high-strength battery box structure still needs to be improved.

[0075] To address the above technical issues, embodiments of the present application provide a battery case and a battery system, comprising a frame assembly, several supporting beams, several module mounting beams, and a bottom guard plate. The frame assembly defines an interior cavity. Several supporting beams are arranged parallel to and spaced apart within the cavity. Each supporting beam is connected to the frame assembly at both ends, and each supporting beam is made of a composite material. Several module mounting beams are positioned within the cavity, with at least some of the module mounting beams positioned below the supporting beams, and at least some of the module mounting beams are positioned perpendicular to the supporting beams. The bottom guard plate is positioned below the frame assembly. The frame assembly, supporting beams, module mounting beams, and bottom guard plate together define several battery slots for mounting batteries. The battery system comprises batteries and at least one of the aforementioned battery cases. The batteries are positioned within the battery slots of the battery case. This allows the present application to utilize the battery case as a carrier for the power battery, with the supporting beams made of composite material, making the battery case more lightweight. Other components within the battery case then distribute the stress on the supporting beams, improving the overall modal properties.

[0076] In order to make the above-mentioned purposes, features and advantages of the embodiments of the present application more obvious and easy to understand, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0077] The present application provides a battery case and battery system. By using the battery case as a carrier for the power battery and using a composite material to fabricate the supporting beam, the battery case is made lighter. Other components within the battery case disperse the stress of the supporting beam, improving the overall modal response. The specific structure of the battery case and battery system provided by the present application is described below in conjunction with the accompanying drawings.

[0078] refer to Figure 1 as well as Figure 2 In a first aspect, an embodiment of the present application provides a battery box 100. The battery box 100 may include a frame assembly 200, a support beam 300, a module mounting beam 400, and a bottom guard plate 500. In a possible implementation, the number of support beams 300 and module mounting beams 400 may be several, and the present application does not limit the number of support beams 300 and module mounting beams 400. In an embodiment of the present application, if Figure 3 As shown, the frame assembly 200 may have a cavity 210 inside, and the cavity 210 is formed by the various frames in the frame assembly 200. Among them, several supporting beams 300 can be arranged in parallel and at intervals in the cavity 210, and both ends of each supporting beam 300 can be connected to the frame assembly 200. In one possible implementation, each supporting beam 300 can be made of a composite material. In this way, the battery box 100 can be made more lightweight. Accordingly, several module mounting beams 400 can also be located in the cavity 210. Among them, at least part of the module mounting beams 400 can be located below the supporting beams 300, and at least part of the module mounting beams 400 and the supporting beams 300 can be arranged vertically. In this way, the module mounting beams 400 and the supporting beams 300 can work together to partition the battery box 100. In addition, the bottom guard plate 500 can be located below the frame assembly 200. It can be understood that the frame assembly 200, the supporting beam 300, the module mounting beam 400 and the bottom guard plate 500 together form a plurality of battery slots 280 for installing batteries, and the battery slots 280 can be used to accommodate batteries.

[0079] Continue to refer Figure 3On the basis of the above embodiment, in one possible implementation, the number of frames in the frame assembly 200 can be several, and the present application does not limit the number of frames. In the embodiment of the present application, an example is given with six frames. The frame assembly 200 may include a first frame 220, two second frames 230, two third frames 240, and a fourth frame 250. The two ends of the first frame 220 may be connected to the two second frames 230 respectively, the two second frames 230 may be connected to the two third frames 240 respectively, and the two third frames 240 are connected to the two ends of the fourth frame 250 respectively. In this way, the first connection is achieved through six frames, thereby forming a whole frame assembly 200. Each frame can be fixedly connected by welding, and the embodiment of the present application does not limit the connection method of the frames. In one possible implementation, each frame can be formed by integral roll forming, so that the frame assembly 200 forms a "mouth" shaped structure.

[0080] refer to Figure 4 Based on the above embodiments, in one possible implementation, each second frame 230 may have two U-shaped plates 231 inside, and the two U-shaped plates 231 may be arranged relative to each other in the height direction of the second frame 230, so that the strength of the second frame 230 can be increased.

[0081] Continue to refer Figure 1 Based on the above embodiment, in one possible implementation, the number of support beams 300 can be multiple, and this application does not limit the number of support beams 300. In this embodiment of the application, the number of support beams 300 is four. The four support beams 300 can be arranged in parallel and spaced apart on the inner side of the frame assembly 200, and both ends of each support beam 300 can be connected to the two second frames 230 respectively.

[0082] refer to Figure 5 On the basis of the above embodiment, in one possible implementation, the number of module mounting beams 400 can be several, and the present application does not limit the number of module mounting beams 400. In the embodiment of the present application, nine module mounting beams 400 are used as an example. The module mounting beams 400 can include a first mounting longitudinal beam 410, two second mounting longitudinal beams 420, four third mounting longitudinal beams 430 and two mounting cross beams 440. In one possible implementation, combined with Figure 5 as well as Figure 6As shown, the first mounting longitudinal beam 410 can be located under each supporting crossbeam 300, and each supporting crossbeam 300 can be provided with a first avoidance opening 310 on a side facing the first mounting longitudinal beam 410, so that the first mounting longitudinal beam 410 can pass through the first avoidance opening 310 and be arranged on the supporting crossbeam 300. The two ends of the first mounting longitudinal beam 410 can also be connected to the first frame 220 and the fourth frame 250 respectively. In a possible implementation, as Figure 7 、 Figure 8 as well as Figure 9 As shown, the upper and lower surfaces of the first mounting longitudinal beam 410 may be provided with a plurality of rivet nuts 450 , while the remaining mounting beams may be provided with a plurality of rivet nuts 450 on a single surface, thereby facilitating the installation of the module mounting beam 400 .

[0083] Continue to refer Figure 5 as well as Figure 6 On the basis of the above embodiment, the two second mounting longitudinal beams 420 can be respectively located at the two ends of the four supporting beams 300, and each supporting beam 300 can be respectively provided with a second avoidance opening 320 on both sides facing the second mounting longitudinal beam 420, so that the two second mounting longitudinal beams 420 can pass through the supporting beam 300 through the second avoidance opening 320, and the two second mounting longitudinal beams 420 can both be located on the inner side of the two second frame frames 230.

[0084] Continue to refer Figure 5 Based on the above embodiment, one end of each third mounting longitudinal beam 430 can be connected to the fourth frame 250, and the other end of each third mounting longitudinal beam 430 can be connected to one of the supporting beams 300. In one possible implementation, two of the third mounting longitudinal beams 430 can be located on either side of the first mounting longitudinal beam 410. It is understood that the mounting beams 440 can be arranged perpendicular to the first mounting longitudinal beam 410 and the second mounting longitudinal beam 420. In one possible implementation, one of the mounting beams 440 can be located below one of the supporting beams 300, and the two ends of the mounting beam 440 are respectively connected to the two second mounting longitudinal beams 420. Another mounting beam 440 can be located on the inner side of the first frame 220, and the two ends of the mounting beam 440 are respectively connected to the two second frames 230.

[0085] refer to Figure 10On the basis of the above embodiment, the bottom guard plate 500 may further include: a plate body 510. The plate body 510 is provided with reinforcing ribs 511, mounting holes 512, and fixing holes 513. In a possible implementation, the number of reinforcing ribs 511, mounting holes 512, and fixing holes 513 may be several, and the present application does not impose any restrictions on the number of reinforcing ribs 511, mounting holes 512, and fixing holes 513. In the embodiment of the present application, the reinforcing ribs 511 may include transverse reinforcing ribs 511a and longitudinal reinforcing ribs 511b. The transverse reinforcing ribs 511a and the longitudinal reinforcing ribs 511b may be arranged vertically. The mounting hole 512 may be located between two adjacent transverse reinforcing ribs 511a, and the mounting hole 512 may also be located between two adjacent longitudinal reinforcing ribs 511b. Several fixing holes 513 may be located on the outer peripheral side of the plate body 510, and bolts 530 may be passed through the fixing holes 513 to connect the bottom guard plate 500 to the frame assembly 200. It is understood that the mounting holes 512 can be used to install the bottom guard plate 500, so that the bottom guard plate 500 is installed between the support beam 300 and the module mounting beam 400 by fasteners passing through the mounting holes 512. In one possible implementation, the bottom guard plate 500 can be stamped and formed from a high-strength steel plate with a thickness of 1.0 mm to increase the strength of the battery box 100.

[0086] refer to Figure 11 On the basis of the above embodiment, the battery box 100 may further include: a sealing member 600. In one possible implementation, in combination with Figure 10 From the perspective of the embodiment, the outer peripheral side of the plate body 510 may have a protrusion 520. Correspondingly, the outer peripheral side of the seal 600 may also have a first sealing portion 610, and the first sealing portion 610 may cooperate with the protrusion 520, so that the seal 600 is connected to the bottom guard plate 500. In addition, the seal 600 may also have a plurality of second sealing portions 620. The number of the second sealing portions 600 is the same as the number of the mounting holes 512, and the shape of the second sealing portion 600 also cooperates with the mounting holes 512, and each second sealing portion 620 may correspond to each mounting hole 512. In this way, the seal 600 can be further connected to the bottom guard plate 500 to achieve sealing performance.

[0087] refer to Figure 12, based on the above embodiment, the battery case 100 may further include: a liquid cooling plate 700. Among them, the seal 600 may be located between the liquid cooling plate 700 and the bottom guard plate 500. In one possible implementation, the liquid cooling plate 700 may further include a substrate 710 and a flow channel plate 720. In an embodiment of the present application, the substrate 710 is located on the flow channel plate 720, and the flow channel 721 for liquid flow is provided on the flow channel plate 720. Among them, the flow channel plate 720 may have several flow channel 721 areas of the same size, and each flow channel 721 area may have flow channels 721 of different shapes or the same shape, and the flow channels 721 in each flow channel 721 area are connected to each other. Among them, the size of the flow channel 721 can be determined according to the demand for balancing the fluid flow rate, and the flow channel 721 can be distributed at different angles on the flow channel plate 720, so that the flow channel plate 720 can be covered with the flow channel 721 on the side facing the substrate 710, thereby making the heat dissipation effect of the entire battery box 100 better. In one possible implementation, the flow channel 721 can be set in an S shape. In this way, when the liquid enters the flow channel 721, it can flow along the S-shaped structure of the flow channel 721, so that the liquid is dispersed more evenly in the flow channel plate 720, and the heat dissipation effect achieved is also better. Of course, in some other embodiments, the flow channel 721 can also be set in other shapes.

[0088] Continue to refer Figure 12 Based on the above embodiment, the flow channel 721 may have a liquid inlet 722 and a liquid outlet 723. Correspondingly, the substrate 710 is provided with a liquid inlet 711 and a liquid outlet 712. It is understood that the liquid inlet 711 and the liquid outlet 712 correspond to the liquid inlet 722 and the liquid outlet 723, respectively, so that the liquid inlet 711 and the liquid outlet 712 are connected to the liquid inlet 722 and the liquid outlet 723, respectively.

[0089] Continue to refer Figure 12 On the basis of the above embodiment, the battery box 100 may further include: a liquid inlet nozzle 730 and a liquid outlet nozzle 740. Figure 7As shown, a liquid inlet 711 and a liquid outlet 712 are provided on the substrate 710, and the liquid inlet 711 and the liquid outlet 712 can correspond to the liquid inlet nozzle 730 and the liquid outlet nozzle 740, respectively. In this way, the liquid inlet nozzle 730 and the liquid outlet nozzle 740 can be respectively provided through the liquid inlet 711 and the liquid outlet 712 to communicate with the substrate 710. Correspondingly, the liquid inlet end 722 and the liquid outlet end 723 on the flow channel 721 can also correspond to the liquid inlet nozzle 730 and the liquid outlet nozzle 740, respectively, so that the liquid inlet nozzle 730 and the liquid outlet nozzle 740 can be respectively communicated with the liquid inlet end 722 and the liquid outlet end 723 after being provided through the liquid inlet 711 and the liquid outlet 712. Thus, liquid can be injected from the liquid inlet nozzle 730, connected to the liquid inlet end 722 through the liquid inlet port 711, and then flow into the flow channel 721. Then, it flows inside the flow channel 721, thereby providing liquid cooling and heat dissipation for the batteries above it, and then flows out through the liquid outlet nozzle 740. In one possible implementation, the base plate 710 can be a 1.2 mm thick aluminum flat plate, and the flow channel plate 720 can be stamped and formed from a 1.0 mm thick aluminum plate to form the entire liquid cooling plate 700.

[0090] On the basis of the above embodiment, in one possible implementation, reference is made to Figure 2 As shown, the frame assembly 200 can be located above the liquid cooling plate 700, and a sealant 270 can be provided on the side of the frame assembly 200 facing the liquid cooling plate 700, thereby fixing the frame assembly 200 to the liquid cooling plate 700. Furthermore, the frame assembly 200 can be connected to the bottom guard plate 500 and the liquid cooling plate 700 via bolts 530. Compared to the FDS plus welding connection method commonly used in the related art for connecting the bottom guard plate 500, the liquid cooling plate 700, and the frame assembly 200, the connection method in the battery box 100 provided in this application is more cost-effective, avoids welding deformation, and is also simpler to install.

[0091] refer to Figure 13 On the basis of the above embodiment, the battery box 100 may further include: a lifting ear assembly 800. In one possible implementation, in combination with Figure 7 、 Figure 8 as well as Figure 9From the perspective of the embodiment, the number of the ear assemblies 800 can be at least two, and the present application does not impose any restrictions on the number of the ear assemblies 800. In the embodiment of the present application, the number of the ear assemblies 800 is two. The two ear assemblies 800 can be respectively located on the outside of the two second frames 230, and the two ear assemblies 800 are symmetrically arranged. In one possible implementation, each ear assembly 800 can include: a base plate 810, a forming tube 820, and a bushing 830. The bushing 830 can be inserted into the forming tube 820, so that the bushing 830 is located on the forming tube 820. The outer surface of the forming tube 820 can be fixedly connected to a portion of the surface of the base plate 810, so that the bushing 830 and the forming tube 820 are integrally located on the base plate 810. The side of the base plate 810 facing away from the forming tube 820 can be fixedly connected to the second frame 230, so that the entire ear assembly 800 is fixed to the frame assembly 200, further facilitating the installation and fixation of the battery case 100. In an embodiment of the present application, the base plate 810 may be a V-shaped base plate 810 , the forming tube 820 may be prepared by integral roll forming, and the bushing 830 may be prepared by steel material, which is not limited in the present application.

[0092] Continue to refer Figure 1 , based on the above embodiment, the battery case 100 may further include: an adapter plate 900. Among them, in a possible implementation, the number of adapter plates 900 may be several, and the present application does not limit the number of adapter plates 900. It should be noted that the adapter plates 900 are located at both ends of the supporting beam 300, so the number of adapter plates 900 is twice the number of the supporting beam 300. In the embodiment of the present application, the number of adapter plates 900 is eight for example. Every two adapter plates 900 can be located at both ends of each supporting beam 300, so that the supporting beam 300 can be connected to the frame assembly 200 through the adapter plate 900. It can be understood that the adapter plate 900 can be located in the cavity 210 of the frame assembly 200, so that the adapter plate 900 can be used to connect the frame assembly 200 to the supporting beam 300. In one possible implementation, the adapter plate 900 can be connected to the frame assembly 200 and the support beam 300 by riveting, thereby dispersing the stress of the support beam 300 inside the battery box 100 and improving the overall modality.

[0093] On the basis of the above embodiment, the battery box 100 may further include: an exhaust structure (not shown in the figure). Figure 1, one of the frames of the frame assembly 200 may be provided with an exhaust hole 260, and the exhaust structure is connected to the exhaust hole 260. In one possible implementation, the exhaust hole 260 may be provided on the first frame 220, or the exhaust hole 260 may also be provided on the fourth frame 250. The embodiment of the present application does not limit the position of the exhaust hole 260. It is understood that the exhaust structure can be a sleeve structure made of aluminum material and can be fixed to the frame provided with the exhaust hole 260 by welding or other means.

[0094] On the basis of the above embodiment, in one possible implementation, as Figure 9 As shown, the support beam 300 and the module mounting beam 400 can be fixedly connected by a long screw 330, which has a certain stabilizing effect. Figure 14 As shown, the supporting beam 300 has a plurality of cavity holes 340 inside, which facilitates the preparation of the supporting beam 300 .

[0095] A second aspect of an embodiment of the present application provides a battery system (not shown in the figure), which may include batteries (not shown in the figure) and at least one battery case 100 as described above. There may be multiple batteries, and each battery may be located in a respective battery slot 280 of the battery case 100. The battery case 100 can provide a certain load-bearing and protective function for the battery, and the liquid cooling plate 700 in the battery case 100 can provide good heat dissipation for the battery.

[0096] In an embodiment of the present application, the battery case 100 is used as a carrier for the power battery, and the supporting beam 300 is made of composite materials, thereby making the battery case 100 lighter. Other components in the battery case 100 disperse the stress of the supporting beam 300 and improve the overall modality.

[0097] The various embodiments or implementation methods in this specification are described in a progressive manner. Each embodiment focuses on the differences from other embodiments, and the same or similar parts between the various embodiments can be referenced to each other.

[0098] It should be noted that phrases such as "in a specific implementation," "in some embodiments," "in this embodiment," and "exemplarily" mentioned in the specification indicate that the described embodiment may include a particular feature, structure, or characteristic, but not every embodiment necessarily includes that particular feature, structure, or characteristic. Furthermore, such phrases do not necessarily refer to the same embodiment. Furthermore, when a particular feature, structure, or characteristic is described in conjunction with an embodiment, it is within the knowledge of those skilled in the art to implement such a feature, structure, or characteristic in conjunction with other embodiments, whether explicitly described or not.

[0099] Generally speaking, terms should be understood, at least in part, based on the context in which they are used. For example, as used herein, the term "one or more" can be used to describe any feature, structure, or characteristic in the singular sense, or can be used to describe a combination of features, structures, or characteristics in the plural sense, depending at least in part on the context. Similarly, terms such as "a," "an," or "the" can also be understood to convey either singular or plural usage, depending at least in part on the context.

[0100] It should be readily understood that “on,” “above,” and “over” in this disclosure should be interpreted in the broadest manner, such that “on” means not only “directly on something,” but also includes “on something” with intervening features or layers therebetween, and “above” or “over” includes not only the meaning of “above” or “over,” but also includes “above” or “over” with no intervening features or layers therebetween (i.e., directly on something).

[0101] Additionally, spatially relative terms, such as "below," "beneath," "beneath," "above," and the like, may be used herein for ease of description to describe the relationship of one element or feature relative to other elements or features as shown in the figures. Spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. The device may be in other orientations (rotated 90 degrees or at other orientations), and the spatially relative descriptors used herein should be interpreted accordingly.

[0102] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A battery box, characterized in that: include: A frame assembly, wherein the frame assembly has a cavity inside; a plurality of supporting beams, the plurality of supporting beams being arranged in parallel and at intervals within the cavity, both ends of each supporting beam being connected to the frame assembly, and each supporting beam being made of a composite material; a plurality of module mounting beams, wherein the plurality of module mounting beams are located in the cavity, at least some of the module mounting beams are located below the support beams, and at least some of the module mounting beams are arranged perpendicular to the support beams; A bottom guard plate, the bottom guard plate being located below the frame assembly; The frame assembly, the supporting beam, the module mounting beam and the bottom guard plate together form a plurality of battery slots for installing batteries.

2. The battery box according to claim 1, characterized in that: The frame assembly includes: a first frame, two second frames, two third frames and a fourth frame; Two ends of the first frame are connected to two second frames, two second frames are respectively connected to two third frames, and two third frames are connected to two ends of the fourth frame; Each second frame has two U-shaped plates arranged opposite to each other inside to increase the strength of the second frame.

3. The battery box according to claim 2, characterized in that: The module mounting beams include: a first mounting longitudinal beam, two second mounting longitudinal beams, four third mounting longitudinal beams and two mounting transverse beams; A first avoidance opening is formed on a side of each of the support beams facing the first mounting longitudinal beam, so that the first mounting longitudinal beam passes through the first avoidance opening and is arranged on the support beam, and both ends of the first mounting longitudinal beam are respectively connected to the first frame and the fourth frame; The two second mounting longitudinal beams are respectively located at both ends of the supporting crossbeam, and each supporting crossbeam is provided with a second avoidance opening on both sides of the second mounting longitudinal beam, so that the two second mounting longitudinal beams pass through the second avoidance opening and are arranged on the supporting crossbeam, and the two second mounting longitudinal beams are both located on the inner sides of the two second frame frames; One end of each of the third mounting longitudinal beams is connected to the fourth frame, and the other end of each of the third mounting longitudinal beams is connected to one of the supporting cross beams; The mounting cross beam is arranged perpendicular to the first mounting longitudinal beam and the second mounting longitudinal beam.

4. The battery box according to claim 3, characterized in that: The bottom guard plate includes: a plate body; The plate body is provided with a plurality of reinforcing ribs and a plurality of mounting holes; The mounting holes are used for mounting with the supporting beams and the module mounting beams.

5. The battery box according to claim 4, characterized in that: The battery box further includes: a sealing member; The outer peripheral side of the plate body has a protrusion, the outer peripheral side of the sealing member has a first sealing portion, and the first sealing portion cooperates with the protrusion; The sealing member is provided with a plurality of second sealing portions, and each of the second sealing portions corresponds to each of the mounting holes.

6. The battery box according to claim 5, characterized in that: The battery box further comprises: a liquid cooling plate, wherein the sealing member is located between the liquid cooling plate and the bottom guard plate; The liquid cooling plate includes a base plate and a flow channel plate; The substrate is located on the flow channel plate, and a flow channel for liquid flow is provided on the flow channel plate, and the flow channel has a liquid inlet end and a liquid outlet end; A liquid inlet and a liquid outlet are provided on the substrate, and the liquid inlet and the liquid outlet are communicated with the liquid inlet end and the liquid outlet end respectively.

7. The battery box according to claim 2, characterized in that: The battery box further includes: two lifting ear assemblies, the two lifting ear assemblies are respectively located on the outer sides of the two second frames; Each of the lifting lug assemblies comprises: a base plate, a forming tube and a bushing; The bushing is located on the forming tube, the forming tube is located on the bottom plate, and the bottom plate is fixedly connected to the second frame.

8. The battery case according to any one of claims 1 to 7, characterized in that: The battery box further includes: a plurality of adapter plates; The adapter plate is located in the cavity of the frame assembly, and the adapter plate is used to connect the frame assembly with the supporting beam.

9. The battery case according to any one of claims 1 to 7, characterized in that: The battery box further includes: an exhaust structure; An exhaust hole is provided on one of the frames of the frame assembly, and the exhaust structure is connected to the exhaust hole.

10. A battery system, characterized in that: comprising a battery and at least one battery case according to any one of claims 1 to 9; The battery is located in the battery slot of the battery box.

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