Battery box, battery module and electric equipment

Abstract

The invention discloses a battery box, a battery module and electric equipment, and belongs to the technical field of batteries, the battery box is provided with a first cavity for mounting a first module and a second cavity for mounting a second module, and the battery box comprises a first cross beam assembly and a second cross beam assembly which are arranged in the height direction of the battery box, a second cavity is formed between the first cross beam assembly and the second cross beam assembly, and a first cavity is formed in the side, away from the second cross beam assembly, of the first cross beam assembly; the two opposite ends of the supporting beam assembly are connected to the first cross beam assembly and the second cross beam assembly correspondingly; the support assembly is connected to the supporting beam assembly, located on the side, away from the second cross beam assembly, of the first cross beam assembly and used for bearing the first module, the battery box provided by the embodiment of the invention is high in strength, and the requirements for high safety and high reliability of the battery module can be better met.

Description

Technical Field

[0001] This application relates to the field of battery technology, and in particular to a battery box, a battery module, and an electrical device. Background Technology

[0002] In related technologies, only a crossbeam is set at the bottom of the box. The crossbeam at the bottom of the box is connected to the supporting combined frame structure above through a support beam. The upper module is installed on top of the combined frame structure. In other words, the upper module is supported by the crossbeam, support beam and combined frame structure at the bottom of the box. The structural strength is weak and it is difficult to meet the requirements of high safety and high reliability for battery modules. Summary of the Invention

[0003] This application provides a battery box, a battery module, and an electrical device to at least partially solve the above-mentioned technical problems.

[0004] To achieve the above objectives, according to a first aspect of this application, a battery box is provided, the battery box having a first chamber for mounting a first module and a second chamber for mounting a second module, the battery box comprising:

[0005] A first crossbeam assembly and a second crossbeam assembly are arranged along the height direction of the battery box. A second chamber is provided between the first crossbeam assembly and the second crossbeam assembly. The first chamber is provided on the side of the first crossbeam assembly away from the second crossbeam assembly.

[0006] The support beam assembly has its two opposite ends connected to the first crossbeam assembly and the second crossbeam assembly, respectively;

[0007] A bracket assembly, connected to the support beam assembly and located on the side of the first crossbeam assembly opposite to the second crossbeam assembly, is used to support the first module.

[0008] In this embodiment, a second crossbeam assembly is added. This second crossbeam assembly, in conjunction with the bracket assembly and support beam assembly, better bears the pressure of the first module. A force transmission path is formed through the first module, bracket assembly, first crossbeam assembly, support beam assembly, and second crossbeam assembly. These components collectively support the first module, preventing the weight of the first module from directly pressing onto the second module and reducing structural stress concentration. This improves the structural strength of the battery box, thereby better meeting the requirements for high safety and high reliability of the battery module.

[0009] Optionally, the support beam assembly includes a first support end and a second support end arranged along the height direction of the battery box, wherein,

[0010] The second crossbeam assembly includes a first sub-section and a second sub-section arranged along the length of the battery box, with the first support end connected between the first sub-section and the second sub-section; and / or

[0011] The first crossbeam assembly includes a first part and a second part arranged along the length of the battery box, and the second support end is connected between the first part and the second part.

[0012] This configuration facilitates the transmission of force from the first support end of the support beam assembly along the length of the battery box toward both sides of the second crossbeam assembly, and also facilitates the transmission of force from the second support end of the support beam assembly along the length of the battery box toward both sides of the first crossbeam assembly.

[0013] Optionally, the battery box includes a side wall and a bottom wall, the side wall and the bottom wall forming a first chamber and a second chamber, the second chamber being located between the first chamber and the bottom wall, the second beam assembly being connected to the bottom wall, and the first beam assembly being connected to the side wall.

[0014] This configuration facilitates the transmission of force from the first crossbeam assembly to the side wall and from the second crossbeam assembly to the bottom wall, thereby improving the support effect on the first module.

[0015] Optionally, the support assembly includes a first structural member and a second structural member arranged at an angle, the first structural member being connected to the end face of the support beam assembly facing away from the bottom wall, and the second structural member being connected to the first crossbeam assembly.

[0016] This configuration allows the pressure from the first module to be transmitted to the support assembly. Force can then be transmitted through the first structural component to the support beam assembly, and from the support beam assembly to the second crossbeam assembly and the first crossbeam assembly. Force can also be transmitted through the second structural component to the first crossbeam assembly, resulting in higher structural strength for the support assembly.

[0017] Optionally, the first crossbeam assembly includes a first sub-beam and a second sub-beam, both of which extend along the width direction of the battery box and are arranged along the length direction of the battery box. The second structural member is connected to the first sub-beam and the second sub-beam at opposite ends along the length direction of the battery box.

[0018] In this way, the pressure of the first module can be transmitted to the first sub-beam and the second sub-beam respectively through the second structural component of the bracket assembly, which can disperse the pressure and improve the strength of the battery box.

[0019] Optionally, the bracket assembly includes a support plate connected to the side of the first structural member opposite to the bottom wall. This increases the contact area with the first module.

[0020] Optionally, the support assembly includes reinforcing ribs, each rib comprising a first reinforcing portion and a second reinforcing portion at an angle. The first reinforcing portion is connected to the first structural member, and the second reinforcing portion is connected to the second structural member. In this embodiment, by providing reinforcing ribs, the overall strength of the support assembly is increased.

[0021] Optionally, the battery box includes a skin that covers and connects to at least a portion of the sidewalls, the skin being located between the first crossbeam assembly and the second crossbeam assembly. The skin, in conjunction with the second crossbeam assembly, the support beam assembly, and the first crossbeam assembly, supports the first module, further improving the structural strength of the battery box.

[0022] Optionally, the skin includes connected recesses and protrusions, the recesses being connected to the sidewall, and at least a portion of the protrusions being spaced apart from the sidewall. This allows for better support of the first module.

[0023] Optionally, the battery box includes corner reinforcements, each comprising a first connecting portion and a second connecting portion connected together, the first connecting portion and the second connecting portion forming an included angle. The sidewalls include adjacent first sidewalls and second sidewalls forming an included angle, the first connecting portion connecting to the first sidewall and the second connecting portion connecting to the second sidewall. By providing corner reinforcements, the two sidewalls forming an included angle are strengthened, thereby enhancing the impact protection of the sidewalls.

[0024] Optionally, the support beam assembly is fixedly connected to the sidewall.

[0025] Optionally, the battery box includes a cover, which is connected to the side wall; wherein,

[0026] The battery box further includes a sealing ring, which is sandwiched between the side wall and the box cover; and / or

[0027] The battery box also includes fasteners for connecting the sidewall to the box cover.

[0028] According to a second aspect of this application, a battery module is provided, comprising:

[0029] First module;

[0030] The second module; and

[0031] The aforementioned battery box has a first chamber and a second chamber, wherein the first chamber is equipped with the first module and the second chamber is equipped with the second module.

[0032] Optionally, the battery module further includes a heat exchanger, wherein,

[0033] The heat exchanger is provided on the side of the first module facing the second module; and / or, the heat exchanger is provided on the side of the second module away from the first module. This satisfies the requirement for balanced temperature in thermal management.

[0034] Optionally, the first module includes a plurality of first sub-modules, the plurality of first sub-modules being electrically connected; and / or,

[0035] The second module includes multiple second sub-modules, which are electrically connected.

[0036] According to a third aspect of this application, an electrical device is also provided, including the battery box described above or including a battery module as described above.

[0037] Other features and advantages of this application will be described in detail in the following detailed description section. Attached Figure Description

[0038] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0039] To gain a more complete understanding of this application and its beneficial effects, the following description will be provided in conjunction with the accompanying drawings, wherein the same reference numerals in the following description denote the same parts.

[0040] Figure 1 This is a first-view structural schematic diagram of the battery module provided in an exemplary embodiment of this disclosure;

[0041] Figure 2 This is a second-view structural schematic diagram of the battery module provided in an exemplary embodiment of this disclosure;

[0042] Figure 3 This is an exploded view of the battery module provided in an exemplary embodiment of this disclosure;

[0043] Figure 4 This is a schematic diagram of the structure of the battery box cover to be removed according to an exemplary embodiment of this disclosure;

[0044] Figure 5 yes Figure 4 Front sectional view of the battery compartment;

[0045] Figure 6 yes Figure 4 Rear cross-sectional view of the battery compartment;

[0046] Figure 7 yes Figure 4 Top sectional view of the battery box;

[0047] Figure 8 yes Figure 4 Left sectional view of the middle battery box;

[0048] Figure 9 yes Figure 4 Right sectional view of the middle battery box;

[0049] Figure 10 This is a first-view structural schematic diagram of the support assembly provided in an exemplary embodiment of this disclosure;

[0050] Figure 11 This is a second-view structural schematic diagram of the support assembly provided in an exemplary embodiment of this disclosure;

[0051] Figure 12 This is a third-view structural schematic diagram of the support assembly provided in an exemplary embodiment of this disclosure;

[0052] Figure 13 This is a schematic diagram of the structure of the skin provided in an exemplary embodiment of this disclosure;

[0053] Figure 14 This is a third-view structural schematic diagram of the battery module provided in an exemplary embodiment of this disclosure;

[0054] Figure 15 yes Figure 14 Cross-sectional view along the AA direction;

[0055] Figure 16 yes Figure 15 An enlarged schematic diagram of section M in the middle;

[0056] Figure 17 This is a structural schematic diagram of the battery module provided in an exemplary embodiment of this disclosure from a fourth perspective;

[0057] Figure 18 yes Figure 17 Cross-sectional view along the BB direction;

[0058] Figure 19 yes Figure 18 An enlarged schematic diagram of part N in the middle;

[0059] Figure 20 yes Figure 18 Enlarged schematic diagram of part P in the middle;

[0060] Figure 21 yes Figure 18 Enlarged schematic diagram of the Q section;

[0061] Figure 22 This is a block diagram of an electrical device provided in an exemplary embodiment of this disclosure.

[0062] Explanation of reference numerals in the attached figures:

[0063] 1. Battery box; 11. First chamber; 12. Second chamber; 13. First crossbeam assembly; 131. First part; 1311. First sub-beam; 133. Second part; 1331. Second sub-beam; 14. Second crossbeam assembly; 141. First sub-section; 143. Second sub-section;

[0064] 15. Support beam assembly; 151. First support end; 153. Second support end; 155. Support beam;

[0065] 16. Support assembly; 161. First structural component; 163. Second structural component; 164. Reinforcing rib; 1641. First reinforcing part; 1643. Second reinforcing part;

[0066] 17. Skin; 171. concave part; 173. convex part;

[0067] 18. Angle reinforcement; 181. First connecting part; 183. Second connecting part;

[0068] 100. Enclosure; 101. Side wall; 1011. First side wall; 1013. Second side wall; 103. Bottom wall; 105. Support plate; 107. Enclosure cover; 109. Sealing ring; 110. Fastener; 191. Connector; 192. Explosion-proof valve;

[0069] 2. Battery module; 21. First module; 211. First sub-module; 22. Second module; 221. Second sub-module; 23. Heat exchanger

[0070] 1000. Electrical equipment. Detailed Implementation

[0071] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the protection scope of this application.

[0072] In related technologies, only a crossbeam is set at the bottom of the box. The crossbeam at the bottom of the box is connected to the supporting combined frame structure above through a support beam. The upper module is installed on top of the combined frame structure. In other words, the upper module is supported by the crossbeam, support beam and combined frame structure at the bottom of the box. The structural strength is weak and it is difficult to meet the requirements of high safety and high reliability for battery modules.

[0073] To improve the above problems, firstly, please refer to [link / reference needed]. Figures 1 to 21 This application provides a battery box 1, a battery module 2, and an electrical device 1000. Please refer to... Figure 22 Electrical equipment 1000 may include battery module 2. It is understood that electrical equipment 1000 includes, but is not limited to, electric toys, power tools, electric vehicles, automobiles, ships, spacecraft, etc. Electric toys may include stationary or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, etc. Spacecraft may include airplanes, rockets, space shuttles, and spacecraft, etc. Automobiles may include gasoline-powered vehicles, natural gas vehicles, and new energy vehicles.

[0074] The battery module 2 may include a battery box 1, a first module 21, and a second module 22, with the first module 21 and the second module 22 installed inside the battery box 1.

[0075] Please combine Figure 1 as well as Figure 2 The battery box 1 may include a box body 100 and a box cover 107. Please refer to the figure.

[0076] 2 and Figure 3 The housing 100 may include connected side walls 101 and bottom walls 103, and a cover 107 is connected to the side walls 101 and is used to cover the housing 100. The cover 107, side walls 101, and bottom walls 103 may be arranged sequentially from top to bottom along the height direction of the battery box 1, with the cover 107 located above the bottom wall 103, and the side walls 101 may be perpendicular to the bottom wall 103. The side walls 101 and bottom walls 103 may be integrally formed. The housing 100 and the cover 107 are detachably connected, and may be screwed together.

[0077] The surface of the enclosure can be covered with a protective layer, which can be achieved through powder coating and electrophoresis to enhance insulation and salt spray protection.

[0078] To protect the battery modules 2 inside the battery box 1, the battery box 1 needs to have good sealing performance to prevent moisture from entering. Please refer to... Figure 18 as well as Figure 19 The battery box 1 may include a sealing ring 109, which may be sandwiched between the side wall 101 and the cover 107. The side wall 101 and the cover 107 can also be connected by fasteners 110, such as bolts or rivets. By connecting multiple fasteners 110 to the cover 107 and cooperating with the sealing ring 109, the battery box 1 achieves a better seal, thereby meeting high protection level requirements.

[0079] Please combine Figure 1 , Figure 14 ,as well as Figure 15 The battery box 1 can be a rectangular box, having length, width, and height directions. The battery box 1 may include a first chamber 11 and a second chamber 12, arranged along the height direction of the battery box 1. The sidewall 101 and the bottom wall 103 form the first chamber 11 and the second chamber 12. The battery module 2 may include a first module 21 and a second module 22, electrically connected. The first module 21 is installed in the first chamber 11, and the second module 22 is installed in the second chamber 12. Thus, the first module 21 and the second module 22 are arranged along the height direction of the battery box 1, fully utilizing the space of the battery box 1, resulting in high space utilization and energy density. The first module 21 may include multiple first sub-modules 211, which are electrically connected. The multiple first sub-modules 211 can be connected in series or in parallel to form the first module 21. When a single first sub-module 211 is damaged, it is convenient to maintain and replace the single first sub-module 211.

[0080] The second module 22 may also include multiple second sub-modules 221, which are electrically connected and can be connected in series or in parallel to form the second module 22. This facilitates maintenance and replacement of individual second sub-modules 221 when they are damaged.

[0081] Please combine Figure 1 The battery box 1 may also include components such as connector 191, MSD (Manual Service Disconnect), fire detector, fire nozzle, and explosion-proof valve 192. The side wall 101 may have mounting holes for these components. The battery modules are electrically connected to external electrical equipment via connector 19. The MSD is a manually operated safety device installed in the battery box. It allows manual disconnection of the high-voltage circuit of the battery box, thereby reducing the risk of electric shock.

[0082] Please combine Figure 4 In some embodiments, the battery box 1 includes a first crossbeam assembly 13 and a second crossbeam assembly 14 arranged along the height direction of the battery box 1. A second chamber 12 is provided between the first crossbeam assembly 13 and the second crossbeam assembly 14. The first chamber 11 is provided on the side of the first crossbeam assembly 13 away from the second crossbeam assembly 14. That is, the first module 21 is installed on the side of the first crossbeam assembly 13 away from the second crossbeam assembly 14, and the second module is installed between the first crossbeam assembly 13 and the second crossbeam assembly 14.

[0083] The two opposite ends of the support beam assembly 15 are respectively connected to the first crossbeam assembly 13 and the second crossbeam assembly 14; the support beam assembly 15 connects the first crossbeam assembly 13 and the second crossbeam assembly 14, so as to facilitate the transmission of the pressure of the first module 21 to the first crossbeam assembly 13 and the second crossbeam assembly 14.

[0084] The bracket assembly 16 is connected to the support beam assembly 15 and is located on the side of the first crossbeam assembly 13 opposite to the second crossbeam assembly 14, for supporting the first module 21. The bracket assembly 16 can be used to support the first module 21, and the pressure applied by the first module 21 is transmitted through the bracket assembly 16 and the support beam assembly 15, and also through the bracket assembly 16 and the first crossbeam assembly 13 located below the bracket assembly 16.

[0085] In this embodiment, a second crossbeam assembly 14 is added. The second crossbeam assembly 14, together with the bracket assembly 16 and the support beam assembly 15, can better bear the pressure of the first module 21. The first module 21, bracket assembly 16, first crossbeam assembly 13, support beam assembly 15, and second crossbeam assembly 14 form a force transmission path. The bracket assembly 16, first crossbeam assembly 13, support beam assembly 15, and second crossbeam assembly 14 can jointly support the first module 21, avoiding the direct pressure of the first module's weight on the second module and reducing structural stress concentration. This improves the structural strength of the battery box 1, thereby better meeting the requirements for high safety and high reliability of the battery module, especially under complex road conditions.

[0086] It is readily understood that the embodiments of this application represent an improvement to the structure of the battery box 1, specifically an improvement to the force transmission structure of the battery box 1. The first crossbeam assembly 13, the second crossbeam assembly 14, the support beam assembly 15, and the bracket assembly 16 can all be located inside the box body 100, forming the "skeleton" of the battery box 1 for supporting it. The first crossbeam assembly 13, the second crossbeam assembly 14, the support beam assembly 15, and the bracket assembly 16 can be respectively connected to the box body 100, forming a whole with the box body, which can enhance the strength of the box body. A box cover 107 can be provided on the side of the first crossbeam assembly 13 opposite to the second crossbeam assembly 14.

[0087] Please combine Figure 4 , Figure 5 as well as Figure 6The support beam assembly 15 is fixedly connected to the side wall 101. The support beam may be welded to the inner side of the side wall 101, that is, the side of the side wall 101 facing the first chamber 11. The support beam assembly 15 may include multiple support beams 155, which may extend along the height direction of the battery box 1. The multiple support beams 155 may be arranged in parallel along the length or width direction of the battery box 1. The bracket assembly 16 may be fixed to the support beams 155 with screws for easy maintenance.

[0088] Please combine Figure 15 , Figure 20 as well as Figure 21 The second chamber 12 is located between the first chamber 11 and the bottom wall 103. The second crossbeam assembly 14 is connected to the bottom wall 103, specifically through methods such as welding or screwing. The first crossbeam assembly 13 is connected to the side wall 101, specifically through methods such as welding or screwing. This arrangement facilitates the transmission of force from the first crossbeam assembly 13 to the side wall 101 and from the second crossbeam assembly 14 to the bottom wall 103, thereby improving the support effect on the first module 21.

[0089] Please combine Figure 17 as well as Figure 18 During assembly, the second module 22 can be assembled into the second chamber 12, and the bracket assembly 16 can be connected to the support beam assembly 15. The bracket assembly 16 can be arranged parallel to the bottom wall 103, thus installing the second module 22 between the bracket assembly 16 and the bottom wall 103. Next, the first module 21 is installed on the bracket assembly 16, thus placing the first module 21 in the first chamber 11, and then the box is sealed with the box cover 107.

[0090] Please combine Figure 4 The second crossbeam assembly 14 includes a first sub-part 141 and a second sub-part 143 arranged along the length direction of the battery box 1. The first crossbeam assembly 13 includes a first portion 131 and a second portion 133 arranged along the length direction of the battery box 1. The first sub-part 141 and the first portion 131 are arranged opposite each other, and it is easy to understand that the first sub-part 141 and the first portion 131 are arranged along the height direction of the battery box 1. The second sub-part 143 and the second portion 133 are arranged opposite each other, and it is easy to understand that the first sub-part 141 and the first portion 131 are arranged along the height direction of the battery box 1. The support beam assembly 15 includes a first support end 151 and a second support end 153 arranged along the height direction of the battery box 1. The first support end 151 is connected between the first sub-part 141 and the second sub-part 143, and the second support end 153 is connected between the first portion 131 and the second portion 133.

[0091] This configuration facilitates force transmission along the length of the battery box 1 towards both sides of the second crossbeam assembly 14 (the side where the first sub-part 141 is located and the side where the second sub-part 143 is located) via the first support end 151 of the support beam assembly 15, and facilitates force transmission along the length of the battery box 1 towards both sides of the first crossbeam assembly 13 (the side where the first part 131 is located and the side where the second part 133 is located) via the second support end 153 of the support beam assembly 15.

[0092] In these embodiments, the second crossbeam assembly 14 has multiple parts along the length of the battery box, including at least a first sub-part 141 and a second sub-part 143. This arrangement allows for more flexible control of the battery box length and facilitates maintenance. The first crossbeam assembly 13 also has multiple parts along the length of the battery box, including at least a first part 131 and a second part 133. The first sub-part 141 and the second sub-part 143 are connected by a first support end 151 of a support beam assembly 15, and the first part 131 and the second part 133 are connected by a second support end 153 of the support beam assembly 15. Thus, the support beam assembly 15 connects the second crossbeam assembly 14 and the first crossbeam assembly 13 into a single unit.

[0093] Please combine Figure 5 and Figure 7 In some embodiments, the first support end 151 of the support beam assembly 15 may be attached to the end face of the first sub-part 141 facing the second sub-part 143, and the first support end 151 of the support beam assembly 15 may be attached to the end face of the second sub-part 143 facing the first sub-part 141. The second support end 153 of the support beam assembly 15 may be attached to the end face of the first part 131 facing the second part 133, and the second support end 153 of the support beam assembly 15 may be attached to the end face of the second part 133 facing the first part 131. In this way, force can be transmitted between the support beam assembly 15, the second crossbeam assembly 14, and the first crossbeam assembly 13.

[0094] In some examples, to further strengthen the battery box 1, the first support end 151 can be fixedly connected to the first sub-part 141 and the second sub-part 143 respectively, for example, by screwing or welding. The second support end 153 can be fixedly connected to the first part 131 and the second part 133 respectively, for example, by screwing or welding.

[0095] Please combine Figure 16 and Figure 20The support assembly 16 includes a first structural member 161 and a second structural member 163 arranged at an angle. The first structural member 161 is connected to the end face of the support beam assembly 15 facing away from the second crossbeam assembly 14, thereby allowing for a larger space between the first crossbeam assembly 13 and the second crossbeam assembly 14. Please refer to... Figure 16 The second structural member 163 is connected to the first crossbeam assembly 13.

[0096] With this configuration, the pressure from the first module 21 can be transmitted to the support assembly 16. The support assembly 16 can transmit force to the support beam assembly 15 via the first structural member 161, and then to the first crossbeam assembly 13 and the second crossbeam assembly 14 via the support beam assembly 15. Force can also be transmitted to the first crossbeam assembly 13 via the second structural member 163, thus giving the support assembly 16 higher structural strength.

[0097] Please combine Figure 10 , Figure 11 as well as Figure 12 The first structural member 161 and the second structural member 163 can be perpendicular to each other, and the first structural member 161 and the second structural member 163 can form a whole, which is parallel to the bottom wall 103.

[0098] The first structural component 161 and the second structural component 163 can be connected by welding. The first structural component 161 and the second structural component 163 can be made of Q345 steel.

[0099] Please combine Figure 4 , Figure 8 as well as Figure 9 The first crossbeam assembly 13 includes a first sub-beam 1311 and a second sub-beam 1331. Both the first sub-beam 1311 and the second sub-beam 1331 extend along the width direction of the battery box 1. The first sub-beam 1311 and the second sub-beam 1331 are arranged along the length direction of the battery box 1. The second structural member 163 is connected to the first sub-beam 1311 and the second sub-beam 1331 at opposite ends along the length direction of the battery box 1.

[0100] The first part 131 may include a first sub-beam 1311, and the second part 133 may include a second sub-beam 1331. The pressure of the first module 21 can be transmitted to the first sub-beam 1311 and the second sub-beam 1331 respectively through the second structural member 163 of the support assembly 16, which can disperse the pressure and improve the strength of the battery box 1.

[0101] Please combine Figure 11 , Figure 16 The bracket assembly 16 includes a support plate 105, which is connected to the side of the first structural member 161 opposite to the bottom wall 103.

[0102] In some embodiments, the first structural member 161 and the second structural member 163 can be connected to form a mounting base. A support plate 105 is mounted on the side of the mounting base away from the bottom wall 103 to facilitate supporting the first module 21 and increase the contact area with the first module 21. The support plate 105 and the first structural member 161 can be welded together. The support plate 105 and the second structural member 163 can also be welded together. The support plate 105 can be made of Q345 steel.

[0103] Please combine Figure 10 as well as Figure 12 The support assembly 16 includes reinforcing ribs 164, each rib comprising a first reinforcing portion 1641 and a second reinforcing portion 1643 connected to each other at an angle. An angle may be formed between the first structural member 161 and the second structural member 163. The reinforcing rib 164 is positioned at this angle, with the first reinforcing portion 1641 connected to the first structural member 161 and the second reinforcing portion 1643 connected to the second structural member 163, thereby further strengthening the angled area between the first structural member 161 and the second structural member 163. In this embodiment, the reinforcing rib 164 enhances the overall strength of the support assembly 16. Testing shows that the support assembly 16 of this embodiment can bear a load of over 600 kg. The reinforcing rib 164 can be a single-piece molded structure.

[0104] In some examples, the first structural member 161 extends along the width direction of the battery box 1, the second structural member 163 extends along the length direction of the battery box, the extension direction of the first structural member 161 is perpendicular to the extension direction of the second structural member 163, and the reinforcing rib 164 can be a right-angled triangular reinforcing rib.

[0105] Please combine Figure 4 , Figure 13 as well as Figure 20 The battery box 1 includes a skin 17 that covers and is connected to at least a portion of the sidewall 101, and the skin 17 is located between the first crossbeam assembly 13 and the second crossbeam assembly 14.

[0106] The skin 17 can be welded to the housing. The skin 17 can also be welded to the first crossbeam assembly 13 and the second crossbeam assembly 14. The skin 17, in conjunction with the second crossbeam assembly 14, the support beam assembly 15, and the first crossbeam assembly 13, can support the first module 21, further improving the structural strength of the battery box 1. The skin 17 can be made of Q345 steel.

[0107] Please combine Figure 4In some embodiments, a space is formed between the first portion 131, the first sub-part 141, and the two support beams 155 of the support beam assembly 15 for mounting the skin 17. The skin 17 can be welded to the first portion 131, the first sub-part 141, and the two support beams 155 of the support beam assembly 15 on all four sides.

[0108] The skin 17 includes a recess 171 and a protrusion 173 connected to each other. The recess 171 is connected to the side wall 101, and at least part of the protrusion 173 is spaced apart from the housing. This allows for better support of the first module 21.

[0109] The skin 17 may include a textured skin 17, the surface of which may have a textured structure, and may be processed by stamping, stretching, or other processes. The protrusion 173 may be the portion of the textured skin 17 away from the housing, and the recess 171 may be the portion of the textured skin 17 connected to the housing. The recess 171 and the housing may be welded together, thereby better absorbing the dynamic load of the first module 21.

[0110] Please combine Figure 2 as well as Figure 4 The battery box 1 includes corner reinforcements 18, each comprising a first connecting portion 181 and a second connecting portion 183 connected together, forming an included angle. The sidewall 101 includes adjacent first sidewall 1011 and second sidewall 1013 forming an included angle. The first connecting portion 181 is connected to the first sidewall 1011, and the second connecting portion 183 is connected to the second sidewall 1013. By providing the corner reinforcements 18, the two sidewalls 101 with included angles are reinforced, thus enhancing the impact protection of the sidewalls 101.

[0111] In some embodiments, the first connecting portion 181 and the second connecting portion 183 can be integrally formed, thereby having higher strength. The first connecting portion 181 and the second connecting portion 183 have an included angle, which can be 90 degrees. The side of the housing can include an adjacent first side and a second side with a bent connection. The connection between the first side and the second side can form an angled structure, which can be a right angle. The first connecting portion 181 is connected to the first side, and the second connecting portion 183 is connected to the second side. The first side and the second side can be any two adjacent sides with an included angle among the many sides of the housing. Please refer to... Figure 2 as well as Figure 4 , Figure 2 The illustration shows an embodiment of a first side and a second side. Figure 4 An embodiment of a first side and a second side is illustrated.

[0112] Angle reinforcement 18 is connected to the outside of the corner structure. In this embodiment, "outer side" can refer to the outside of the box body, the side of the box body away from the first chamber 11 and the second chamber 12. "Inner side" can refer to the side of the box body where the first chamber 11 and the second chamber 12 are located.

[0113] Secondly, please combine Figure 3 The present application also provides a battery module 2, which includes a first module 21, a second module 22 and the battery box 1 described above. The battery box 1 is provided with a first chamber 11 and a second chamber 12. The first module 21 is installed in the first chamber 11 and the second module 22 is installed in the second chamber 12.

[0114] In some embodiments, the battery module 2 further includes a heat exchanger 23, wherein the heat exchanger 23 may be provided on the side of the first module 21 facing the second module 22. The heat exchanger 23 may be provided on the side of the second module 22 away from the first module 21. The heat exchanger 23 may cover the entire battery cell of the second module 22 or the entire battery cell of the first module 21, thereby meeting the requirements for thermal management temperature balance. The heat exchanger 23 may have a cooling function, such as a liquid cooling plate, or a heating function, such as a heating element.

[0115] Thirdly, please combine Figure 22 This application also provides an electrical device 1000, which includes a battery box 1 as described above or a battery module 2 as described above.

[0116] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0117] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0118] The embodiments, implementation methods, and related technical features of this application can be combined and substituted for each other without conflict.

[0119] The above are merely preferred embodiments of this application and are not intended to limit this application in any way. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of this application without departing from the scope of the technical solution of this application shall still fall within the scope of the technical solution of this application.

Claims

1. A battery box (1), characterized in that, The battery box (1) is provided with a first chamber (11) for mounting a first module (21) and a second chamber (12) for mounting a second module (22), and the battery box (1) comprises: A first cross beam assembly (13) and a second cross beam assembly (14) arranged along the height direction of the battery box (1), and the second chamber (12) is arranged between the first cross beam assembly (13) and the second cross beam assembly (14), and the first chamber (11) is arranged on the side of the first cross beam assembly (13) away from the second cross beam assembly (14); A support beam assembly (15) connected to the first cross beam assembly (13) and the second cross beam assembly (14) at opposite ends; A bracket assembly (16) connected to the support beam assembly (15) and located on the side of the first cross beam assembly (13) away from the second cross beam assembly (14) for carrying the first module (21).

2. The battery box (1) according to claim 1, characterized in that The support beam assembly (15) comprises a first support end (151) and a second support end (153) arranged along the height direction of the battery box (1), wherein The second cross beam assembly (14) comprises a first sub-portion (141) and a second sub-portion (143) arranged along the length direction of the battery box (1), and the first support end (151) is connected between the first sub-portion (141) and the second sub-portion (143); and / or The first cross beam assembly (13) comprises a first portion (131) and a second portion (133) arranged along the length direction of the battery box (1), and the second support end (153) is connected between the first portion (131) and the second portion (133).

3. The battery box (1) according to claim 1, characterized in that The battery box (1) comprises a side wall (101) and a bottom wall (103), and the side wall (101) and the bottom wall (103) form the first chamber (11) and the second chamber (12), the second chamber (12) is located between the first chamber (11) and the bottom wall, the second cross beam assembly (14) is connected to the bottom wall (103), and the first cross beam assembly (13) is connected to the side wall (101).

4. The battery box (1) according to claim 3, characterized in that The bracket assembly (16) comprises a first structural member (161) and a second structural member (163) arranged at an angle, the first structural member (161) is connected to the end face of the support beam assembly (15) away from the bottom wall (103), and the second structural member (163) is connected to the first cross beam assembly (13).

5. The battery box (1) according to claim 4, characterized in that The first cross beam assembly (13) comprises a first sub-beam (1311) and a second sub-beam (1331), the first sub-beam (1311) and the second sub-beam (1331) extend along the width direction of the battery box (1), and the first sub-beam (1311) and the second sub-beam (1331) are arranged along the length direction of the battery box (1), and the second structural member (163) is connected to the first sub-beam (1311) and the second sub-beam (1331) at opposite ends along the length direction of the battery box (1).

6. The battery box (1) according to claim 4, characterized in that The support assembly (16) comprises a support plate (105) connected to a side of the first structural member (161) away from the bottom wall (103).

7. The battery box (1) according to claim 4, characterized in that The support assembly (16) comprises a reinforcing rib (164) comprising a first reinforcing part (1641) and a second reinforcing part (1643) connected at an angle, the first reinforcing part (1641) being connected to the first structural member (161), and the second reinforcing part (1643) being connected to the second structural member (163).

8. The battery box (1) according to claim 3, characterized in that The battery box (1) comprises a skin (17) covering and connected to at least part of the side wall (101), the skin (17) being located between the first cross beam assembly (13) and the second cross beam assembly (14).

9. The battery box (1) according to claim 8, characterized in that The skin (17) comprises a concave part (171) and a convex part (173) connected, the concave part (171) being connected to the side wall (101), and at least part of the convex part (173) being spaced apart from the side wall (101).

10. The battery box (1) according to claim 3, characterized in that The battery box (1) comprises an angle reinforcing member (18) comprising a first connecting part (181) and a second connecting part (183) connected at an angle, the side wall (101) comprising a first side wall (1011) and a second side wall (1013) adjacent and connected at an angle, the first connecting part (181) being connected to the first side wall (1011), and the second connecting part (183) being connected to the second side wall (1013).

11. The battery box (1) according to claim 3, characterized in that The support beam assembly (15) is fixedly connected to the side wall (101).

12. The battery box (1) according to claim 3, characterized in that The battery box (1) comprises a box cover (107) connected to the side wall (101); wherein, The battery box (1) further comprises a sealing ring (109) clamped between the side wall (101) and the box cover (107); and / or The battery box (1) further comprises a fastener (110) for connecting the side wall (101) and the box cover (107).

13. A battery module (2), characterized in that Comprise: A first module (21); A second module (22); And The battery box (1) according to any one of claims 1-12, wherein the battery box (1) is provided with a first cavity (11) and a second cavity (12), the first cavity (11) is provided with the first module (21), and the second cavity (12) is provided with the second module (22).

14. The battery module (2) according to claim 13, characterized in that, The battery module (2) further comprises a heat exchange member (23), wherein The first module (21) is provided with the heat exchange member (23) on a side facing the second module (22); and / or the second module (22) is provided with the heat exchange member (23) on a side away from the first module (21).

15. The battery module (2) according to claim 13, characterized in that The first module (21) comprises a plurality of first sub-modules, and the plurality of first sub-modules are electrically connected; and / or, The second module (22) comprises a plurality of second sub-modules, and the plurality of second sub-modules are electrically connected.

16. An electrical device, characterized by A battery box (1) according to any one of claims 1-12 or a battery module (2) according to any one of claims 13-15.

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