Battery box and electronic device

Abstract

The present application provides a battery box and an electronic device. The battery box comprises: a battery module; a connecting member; a lower box body having a first connecting surface and an abutment surface, the abutment surface being located at a bottom end of the lower box body and configured to support the battery module, wherein an included angle is formed between an extension direction of the first connecting surface and an extension direction of the abutment surface; and an upper box body having a second connecting surface, the second connecting surface facing the first connecting surface and being connected to the first connecting surface via the connecting member to surround and define an accommodating cavity for accommodating the battery module. The present application facilitates assembly by personnel and reduces the volume of the battery box.

Description

A battery box and electronic device

[0001] This application claims priority to Chinese Patent Application No. 202422724285.5, filed on November 7, 2024, entitled "Battery Box and Electronic Device", the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application relates to a battery box and electronic device, belonging to the field of new energy battery technology. Background Technology

[0003] In fields such as new energy power plants or microgrids, with the rapid growth of the electric vehicle market, the demand for power battery technology is becoming increasingly mature. When different models choose power batteries, they are influenced by factors such as vehicle use, market demand, and policies and regulations, showing a diversified trend.

[0004] In the process of conceiving and implementing this application, the applicant discovered at least the following problems: In some solutions, the battery box is usually composed of battery modules and a box body. The battery modules are set inside the box body, which includes an upper cover and a lower cover. During assembly, employees need to assemble them one by one. In order to facilitate the installation by employees, a horizontal mounting boss is usually added to the lower cover, and the upper cover has a corresponding horizontal flange. The installation is carried out by drilling holes perpendicular to the lower cover through connectors. The horizontal mounting boss and flange result in a large volume of the entire box body.

[0005] The preceding description is intended to provide general background information and does not necessarily constitute prior art.

[0006] Utility Model Content

[0007] This application provides a battery box and electronic device that are easy for employees to assemble and reduce the size of the battery box.

[0008] This application provides a battery box, including:

[0009] Battery module;

[0010] Connectors;

[0011] The lower housing has a first connecting surface and an abutting surface. The abutting surface is located at the bottom of the lower housing and is used to support the battery module. There is an angle between the extending direction of the first connecting surface and the extending direction of the abutting surface.

[0012] The upper housing has a second connecting surface facing the first connecting surface and connected to the first connecting surface by a connector to form a cavity for accommodating the battery module.

[0013] The beneficial effects of this application are: by combining the lower box and the upper box to form a cavity for accommodating the battery module, the first connecting surface is inclined relative to the abutting surface, which facilitates assembly by employees at the installation site, and the width of the box is reduced, which further reduces the volume of the battery box, reduces the space occupied during installation, makes the battery box more compact, and facilitates subsequent maintenance.

[0014] Based on the above technical solution, the following improvements can be made to this application.

[0015] In some alternative implementations, a liquid cooling plate is also included for heat exchange with the battery module;

[0016] The liquid cooling plate forms the lower casing.

[0017] It should be noted that using a liquid cooling plate as the lower casing can reduce the size of the casing; the liquid cooling plate exchanges heat with the battery modules, which can effectively manage the temperature of the battery modules and help improve the performance and lifespan of the battery casing.

[0018] In some alternative implementations, the extension direction of the first connecting surface is consistent with the extension direction of the second connecting surface.

[0019] It should be noted that because the first and second connecting surfaces extend in the same direction, the manufacturing and assembly process may be simplified. This consistency can reduce the complexity of alignment and installation, thereby reducing production costs and time.

[0020] In some alternative implementations, the angle between the extending direction of the first connecting surface and the extending direction of the abutting surface is an acute angle.

[0021] It should be noted that using an acute angle design can make the overall structure of the battery box more compact. Since the acute angle design may allow for a tighter fit, this helps to improve the sealing performance of the battery box, prevent liquid or gas leakage, and protect internal components from environmental influences.

[0022] In some alternative embodiments, the upper housing includes a lid and side walls, with at least two side walls located on opposite sides of the lid along a first direction;

[0023] The side of the box cover facing the liquid cooling plate has a second connecting surface, and the side wall has a third connecting surface. The first connecting surface and the third connecting surface are spliced ​​together, and the second connecting surface is placed on the first connecting surface and the third connecting surface.

[0024] It should be noted that by splicing the first and third connecting surfaces and covering them with the second connecting surface, a robust integral structure can be formed. This design helps improve the mechanical strength and stability of the battery box, ensuring that it can withstand external impacts and vibrations during use; the second connecting surface covering the first and third connecting surfaces helps achieve a better sealing effect. This design can effectively prevent dust, moisture, or other external contaminants from entering the battery box, thereby protecting the safety and performance of the battery module.

[0025] In some alternative embodiments, the liquid cooling plate has a liquid cooling section and a mounting section, the mounting section extending along a direction facing the cover, and there are at least two mounting sections, which are located on opposite sides of the liquid cooling section along a second direction;

[0026] The first connecting surface is the top surface of the mounting part, and the abutting surface is located on the liquid cooling part and faces the battery module;

[0027] There is an angle between the second direction and the first direction.

[0028] It should be noted that the liquid cooling section faces the battery module directly, ensuring that the liquid cooling plate can effectively exchange heat. This direct contact helps to dissipate heat quickly, keeping the battery module within its optimal temperature range, thus improving its performance and lifespan.

[0029] In some alternative embodiments, the bottom end of the sidewall has a protrusion that extends toward the side facing the mounting portion and matches the shape of the mounting portion.

[0030] The third connecting surface is the side wall of the protrusion facing the second connecting surface.

[0031] It should be noted that the protrusion matches the shape of the mounting part, providing a secure connection and ensuring precise alignment between components. This simplifies the assembly process, reduces installation errors, and improves production efficiency.

[0032] In some alternative implementations, a seal is also included, disposed between the upper housing and the liquid cooling plate.

[0033] It should be noted that the seals prevent dust, moisture, and other contaminants from entering the upper casing, protecting critical components such as the battery module from external environmental influences. Effective sealing reduces the risk of leakage and contamination, thereby lowering the frequency and cost of maintenance and repair, and extending the system's lifespan.

[0034] In some alternative embodiments, the seal includes a first sealing surface and a second sealing surface, each having at least two first sealing surfaces and at least two second sealing surfaces connected together;

[0035] The first sealing surface is located between the side wall and the lid, and the second sealing surface is located between the first connecting surface and the second connecting surface, with the extension direction of the second sealing surface being consistent with the extension direction of the first connecting surface.

[0036] It should be noted that by providing a first sealing surface between the side wall and the cover, and a second sealing surface between the first and second connecting surfaces, multi-layered sealing protection can be achieved. This multi-layered sealing design helps prevent dust, moisture, and other external contaminants from entering the battery box, thereby protecting the safety and performance of the battery module.

[0037] In some optional embodiments, a first mounting hole is formed on the first sealing surface. When the connector connects the side wall and the cover, it passes through the first mounting hole to press the first sealing surface against the end face of the side wall.

[0038] A second mounting hole is formed on the second sealing surface. The connector connects the first connecting surface and the second connecting surface, passes through the second mounting hole, and presses the second sealing surface against the first connecting surface.

[0039] It should be noted that by providing a first mounting hole on the first sealing surface, the connector can pass through the first mounting hole and apply pressure to press the first sealing surface against the end face of the side wall, which helps to ensure tight contact between the seal and the connecting surface, thereby improving the sealing effect.

[0040] In some alternative embodiments, the mounting part is a hollow structure, and the connecting part is a rivet nut; or,

[0041] The mounting section is a solid structure, and the connecting parts are wire thread inserts.

[0042] In addition, this application also provides an electronic device including the battery box of any of the above.

[0043] By combining the lower and upper housings, a cavity is formed to accommodate the battery modules. The first connecting surface is inclined relative to the contact surface, which facilitates assembly by employees on the installation site. The width of the housing is also reduced, which further reduces the volume of the battery box, reduces the space occupied during installation, and makes the battery box more compact, which is convenient for subsequent maintenance. Attached Figure Description

[0044] The above and other objects, features, and advantages of embodiments of this application will become more readily understood through the following detailed description with reference to the accompanying drawings. In the drawings, several embodiments of this application will be described by way of example and non-limitation, wherein:

[0045] Figure 1 is a structural schematic diagram of the battery box from a first-view perspective according to an embodiment of this application;

[0046] Figure 2 is a first-view exploded view of the battery box according to an embodiment of this application;

[0047] Figure 3 is a structural schematic diagram of the battery box from a second perspective according to an embodiment of this application;

[0048] Figure 4 is a second-view exploded view of the battery box according to an embodiment of this application;

[0049] Figure 5 is a cross-sectional view of the battery box according to an embodiment of this application;

[0050] Figure 6 is a magnified view of part I in Figure 5;

[0051] Figure 7 is a schematic diagram of the structure of the battery box cover in an embodiment of this application;

[0052] Figure 8 is a schematic diagram of the assembly of the liquid cooling plate and the side wall in the battery box according to an embodiment of this application from a first-view perspective;

[0053] Figure 9 is a schematic diagram of the assembly of the liquid cooling plate and the side wall in the battery box according to an embodiment of this application from a second perspective;

[0054] Figure 10 is a cross-sectional view of the battery box using the first type of connector according to an embodiment of this application;

[0055] Figure 11 is a cross-sectional view of the battery box using the second type of connector according to an embodiment of this application;

[0056] Figure 12 is an assembly cross-sectional view of the battery box using the first type of connector and mounting part according to an embodiment of this application;

[0057] Figure 13 is an assembly cross-sectional view of the battery box using the second type of connector and mounting part according to an embodiment of this application.

[0058] Reference numerals: 100-Battery box; 110-Connector; 111-Rivet nut; 112-Wire thread insert; 120-Liquid cooling plate; 121-Liquid cooling section; 1211-Abutting surface; 122-Mounting section; 1221-First connecting surface; 1222-First connecting hole; 130-Upper box; 131-Box cover; 1311-Second connecting surface; 1312-Second connecting hole; 1313-First edging; 1314-Second edging; 132-Side wall; 1321-Protrusion; 13211-Third connecting surface; 140-Seal; 141-First sealing surface; 1411-First mounting hole; 142-Second sealing surface; 1421-Second mounting hole; 150-Crossbeam. Detailed Implementation

[0059] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, 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 some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application. All other obtained embodiments are within the scope of protection of this application. In the absence of conflict, the following embodiments and features can be combined with each other.

[0060] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0061] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0062] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0063] In the process of conceiving and implementing this application, the applicant discovered at least the following problems: In some solutions, the battery box is usually composed of battery modules and a box body. The battery modules are set inside the box body, and the upper box body includes an upper cover and a lower cover. During assembly, employees need to assemble them one by one. In order to facilitate the installation by employees, a horizontal mounting boss is usually added to the lower cover, and the upper cover has a corresponding flange. The installation is carried out by drilling holes perpendicular to the lower cover through connectors. In order to meet the installation strength, the mounting boss and flange are set to be relatively wide, which leads to the large volume of the entire box body.

[0064] The battery box and electronic equipment proposed in this application form a cavity for accommodating battery modules by combining the lower box and the upper box. The first connecting surface is inclined relative to the abutting surface, which facilitates assembly by employees on the installation site. In addition, the width of the box is reduced, which further reduces the volume of the battery box, reduces the space occupied in the installation, makes the battery box more compact, and facilitates subsequent maintenance.

[0065] The battery box provided in this application will be described in detail below with reference to specific embodiments.

[0066] Figure 1 is a structural schematic diagram of the battery box from a first perspective according to an embodiment of the present application. Figure 2 is an exploded view of the battery box from a first perspective according to an embodiment of the present application. Figure 3 is a structural schematic diagram of the battery box from a second perspective according to an embodiment of the present application. Figure 4 is an exploded view of the battery box from a second perspective according to an embodiment of the present application.

[0067] Referring to Figures 1 to 4, an embodiment of this application proposes a battery box 100, comprising:

[0068] Battery module;

[0069] Connector 110;

[0070] The lower housing has a first connecting surface 1221 and an abutting surface 1211. The abutting surface 1211 is located at the bottom of the lower housing and is used to support the battery module. There is an angle between the extending direction of the first connecting surface 1221 and the extending direction of the abutting surface 1211.

[0071] Liquid cooling plate 120, used for heat exchange with battery module, liquid cooling plate 120 has

[0072] The upper housing 130 has a second connecting surface 1311, which faces the first connecting surface 1221 and is connected to the first connecting surface 1221 through a connector 110 to form a cavity for accommodating the battery module.

[0073] It is understandable that the purpose of the cavity is to house the battery module. It is also easy to understand that the cavity is sealed to prevent side reactions from occurring within the battery cells, which could affect the cell performance.

[0074] The dimensions of the upper housing 130 can be set according to actual needs, and this embodiment of the application does not impose any restrictions on them.

[0075] In some examples, the upper housing 130 may be a metal component, and its material may include one or more of copper, iron, aluminum, tin, and lead. The casting mold may be made of sand, metal, or ceramic.

[0076] In other examples, the upper housing 130 may be made of plastic. During injection molding, molten plastic is injected under pressure into a plastic product mold, and then cooled and solidified to obtain the desired plastic part.

[0077] The injection molding process can be completed by a mechanical injection molding machine. The material of the upper housing 130 may include one or more of polyethylene, polypropylene, ABS (a terpolymer of acrylonitrile (A), butadiene (B), and styrene (S) monomers), polyamide, and polystyrene.

[0078] It should be noted that the specific material of the upper housing 130 is not limited in this embodiment.

[0079] Of course, during manufacturing, the upper box 130 can also be made of steel plate, plastic or synthetic materials, provided that the strength is guaranteed.

[0080] In addition, it should be noted that the shape of the upper box 130 is not limited in this embodiment. For example, the upper box 130 can be a regular shape such as a cuboid or a cylinder. Of course, the upper box 130 can also be other irregular shapes.

[0081] For example, the size or shape of the receiving cavity is matched with the size and shape of the battery module. Specifically, it can be adjusted according to the actual situation. This application embodiment does not impose too many restrictions here.

[0082] It should be noted that by installing a liquid cooling plate 120 on the upper housing 130, and by having liquid cooling channels on the liquid cooling plate 120, the heat generated by the battery module can be effectively carried away by the coolant. Liquid cooling technology is generally more efficient than air cooling, and can reduce battery temperature more quickly, prevent overheating, and improve battery efficiency and lifespan.

[0083] In this embodiment, the battery module can be configured as a rectangular structure. The battery module can be located inside the upper housing 130.

[0084] Understandably, the upper housing 130 can be used to support the battery module.

[0085] In one possible implementation, the upper housing 130 can be a rectangular structure, and the size of the upper housing 130 can be greater than or equal to the size of the battery module, so that the upper housing 130 can support the battery module.

[0086] It should be noted that the heat exchange function between the liquid cooling plate 120 and the battery module can effectively manage the temperature of the battery module, which helps to improve the performance and lifespan of the battery.

[0087] It should be noted that the first connecting surface 1221 and the second connecting surface 1311 of the liquid cooling plate 120 abut against each other, and are assembled by the connector 110 to form a sealed cavity, which can better accommodate the battery module.

[0088] In addition, it should be noted that the first connecting surface 1221 of the liquid cooling plate 120 is inclined relative to the abutting surface 1211. On the one hand, that is, the installation angle of the connector 110 is inclined. Employees can install the liquid cooling plate 120 and the upper housing 130 along the thickness direction of the upper housing 130 through the connector 110, which is convenient for employees to assemble on the installation site.

[0089] Specifically, compared to the existing installation method, the first connecting surface 1221 of the liquid cooling plate 120 is parallel to the abutment surface 1211. Considering the structure of the connector 110, when the connector 110 acts on the first connecting surface 1221 of the liquid cooling plate 120, there are certain requirements for the width of the first connecting surface 1221. That is to say, without changing the width of the first connecting surface 1221, this application sets the first connecting surface 1221 at an angle, which can reduce the width of the upper housing 130, reduce the volume of the battery box 100, reduce the space occupied in the installation, make the battery box 100 more compact, and facilitate subsequent maintenance.

[0090] In one possible implementation, a liquid cooling plate 120 is also included for heat exchange with the battery module, and the liquid cooling plate 120 is the lower housing.

[0091] Using a liquid-cooled plate 120 as the lower panel can reduce the structural bulk of the enclosure.

[0092] In some alternative implementations, the liquid cooling plate 120 is an integrally stamped cold plate.

[0093] It should be noted that the structural design of the profile liquid cooling plate 120 can provide additional mechanical strength and rigidity, enhance the structural stability of the entire battery box 100, and reduce deformation or damage caused by vibration or impact.

[0094] In some embodiments, the liquid cooling plate 120 is an aluminum extrusion profile structure. Structurally, it includes a bottom liquid cooling plate 120 structure and a side cavity structure forming an integrally extruded profile component for the liquid cooling plate 120 frame.

[0095] Along the second direction Y, there are two liquid cooling plates 120.

[0096] In some embodiments, the flow channel of the bottom cold plate on the liquid cooling plate 120 structure serves to store and flow coolant, and the cavity structure of the side profile serves to fix the box cover 131 with the frame.

[0097] In some embodiments, the top of the side cavity of the liquid cooling plate 120 is designed with a slope. This slope design is used to optimize the dimensional space in the width direction of the upper housing 130, and also improves the structural strength of the bottom sealing area of ​​the cover 131 and the smooth transition of the seal 140 at the transition surface of the bottom sealing area.

[0098] In some embodiments, a lifting hole is provided on the bottom side of the liquid cooling plate 120.

[0099] In some embodiments, at least two water holes are provided on the liquid cooling plate 120, which are connected to the internal flow channel of the liquid cooling plate 120 to form an in-out circulation with the flow channel.

[0100] In some embodiments, a plurality of crossbeams 150 are also provided on the liquid cooling plate 120 to improve installation stability, wherein the plurality of crossbeams 150 are welded at intervals along the first direction X and are made of aluminum extrusion profiles.

[0101] With the above configuration, that is, by combining the lower box and the upper box 130, a cavity for accommodating the battery module is formed. In addition, the first connecting surface 1221 is inclined relative to the abutting surface 1211, which reduces the width of the box and further reduces the volume of the battery box 100, reduces the space occupied in the installation, makes the battery box 100 more compact, and facilitates subsequent maintenance.

[0102] As shown in Figures 1 to 4, in some embodiments, a supporting cotton is also included. The supporting cotton is located between the cover 131 and the battery module. A first connecting hole 1222 is opened on the first connecting surface 1221, and a second connecting hole 1312 is opened on the second connecting surface 1311. When the connector 110 connects the cover 131 and the liquid cooling plate 120, the connector 110 is directly inserted into the second connecting hole 1312. When an installation force is applied to the connector 110, the first connecting hole 1222 and the second connecting hole 1312 gradually align, and the distance between them gradually decreases. In addition, the supporting cotton is in a compressed state, which can better support the cover 131 and the battery module.

[0103] In other words, employees do not need to press down the box cover 131 first, and then install the connector 110 when aligning the two connection holes. Therefore, the embodiments of this application are more convenient for employees to assemble.

[0104] Figure 5 is a cross-sectional view of the battery box according to an embodiment of this application, and Figure 6 is a partial enlarged view of point I in Figure 5.

[0105] As shown in Figures 1 to 6, in some optional embodiments, the extending direction of the first connecting surface 1221 is consistent with the extending direction of the second connecting surface 1311.

[0106] It should be noted that because the first connecting surface 1221 and the second connecting surface 1311 extend in the same direction, the manufacturing and assembly process may be simplified. This consistency can reduce the complexity of alignment and installation, thereby reducing production costs and time.

[0107] A consistent extension direction enhances the effectiveness of the connector 110, providing a more uniform stress distribution. This contributes to improved mechanical stability and durability of the entire battery box 100, and the consistent extension direction also helps achieve a better seal, reducing the risk of liquid or gas leakage. This is crucial for maintaining environmental stability and safety within the battery box 100.

[0108] In some alternative embodiments, the angle between the extending direction of the first connecting surface 1221 and the extending direction of the abutting surface 1211 is an acute angle.

[0109] It should be noted that the use of acute angles makes the overall structure of the battery box 100 more compact. Since the acute angle design may allow for a tighter fit, this helps to improve the sealing performance of the battery box 100, prevent liquid or gas leakage, and protect the internal components from environmental influences.

[0110] In addition, the acute angle design allows the force applied by the user to the connector 110 on the first connecting surface 1221 and the second connecting surface 1311 to be partially distributed in the thickness direction of the upper housing 130, which can reduce the width of the upper housing 130 while ensuring convenient installation.

[0111] Figure 7 is a structural schematic diagram of the cover of the battery box in an embodiment of this application; Figure 8 is a schematic diagram of the assembly of the liquid cooling plate and the side wall in the battery box from a first perspective in an embodiment of this application; and Figure 9 is a schematic diagram of the assembly of the liquid cooling plate and the side wall in the battery box from a second perspective in an embodiment of this application.

[0112] As shown in Figures 1 to 9, in some optional embodiments, the upper housing 130 includes a lid 131 and side walls 132, wherein there are at least two side walls 132, and the at least two side walls 132 are located on opposite sides of the lid 131 along a first direction.

[0113] The side of the cover 131 facing the liquid cooling plate 120 has a second connecting surface 1311, and the side wall 132 has a third connecting surface 13211. The first connecting surface 1221 and the third connecting surface 13211 are spliced ​​together, and the second connecting surface 1311 covers the first connecting surface 1221 and the third connecting surface 13211.

[0114] It should be noted that by splicing the first connecting surface 1221 and the third connecting surface 13211, and covering them with the second connecting surface 1311, a robust integral structure can be formed. This design helps improve the mechanical strength and stability of the battery box 100, ensuring that it can withstand external impacts and vibrations during use; the second connecting surface 1311 covering the first connecting surface 1221 and the third connecting surface 13211 helps achieve a better sealing effect. This design can effectively prevent dust, moisture, or other external contaminants from entering the battery box 100, thereby protecting the safety and performance of the battery module.

[0115] Furthermore, since the sidewalls 132 are located on opposite sides of the cover 131 along the first direction, this design can accommodate battery modules of different sizes and shapes; this design allows for quick assembly and disassembly of the cover 131 and sidewalls 132, facilitating the installation, inspection, and maintenance of the battery modules. This modular design can reduce maintenance time and costs, and improve the maintainability of the system.

[0116] As shown in Figure 2, it should be noted that the first direction X can be the length direction of the upper box 130.

[0117] In some embodiments, the lid 131 is C-shaped and adopts a semi-enclosed structure, eliminating the side borders, achieving a lightweight design while reducing costs and increasing efficiency.

[0118] In some embodiments, the cover 131 partially encloses the entire liquid cooling plate 120 assembly along the sealing area of ​​the liquid cooling plate 120, forming a closed internal space. The cover 131 is a stamped steel plate part, and to improve the strength and rigidity of the large surface area, reinforcing structural ribs are stamped on the bottom and sides. A step or folding structure is provided adjacent to the sealing area.

[0119] In some embodiments, to optimize the internal space of the enclosure and improve energy density, the outline dimensions of the enclosure cover 131 are minimized, except for the sealed area.

[0120] In some embodiments, to reduce costs, a single-layer stamped sheet metal is used to replace the high frame structure of the aluminum profile cavity, so the sidewall 132 is designed with high edges on both sides.

[0121] In some embodiments, the cover 131 is connected to the sealing area of ​​the liquid cooling plate 120 to form a closed internal space of the battery box 100. Considering the sealing effect of the side walls 132 with high sides in the sealing area, a slope transition is added to each corner to further improve the structural strength and sealing effect.

[0122] As shown in Figures 1 to 9, in some optional embodiments, the lid 131 includes a first edge 1313 and a second edge 1314. There are at least two second edges 1314, which are located on opposite sides of the first edge 1313. The extension direction of the second edge 1314 is at an angle to the extension direction of the first edge 1313.

[0123] The ends of the first edge band 1313 and the second edge band 1314 form a notch, and the side wall 132 seals the notch.

[0124] It should be noted that this design improves the overall structural strength and rigidity of the cover 131, enabling it to better resist external pressure and impact, and protect internal components. The clever edge-sealing design allows for more efficient use of the space in the upper housing 130, reducing material usage without compromising structural integrity and functionality. The angle between the first edge-sealing 1313 and the second edge-sealing 1314 allows for adjustment according to different application requirements, providing greater design flexibility to adapt to various equipment and environmental conditions.

[0125] In some embodiments, the upper surface of the first edging 1313 has a certain number of block-shaped protrusions to enhance strength and rigidity.

[0126] In other embodiments, the first edge banding 1313 and the second edge banding 1314 are integrally formed structures and are C-shaped.

[0127] It should be noted that in some embodiments, the first edge banding 1313 and the second edge banding 1314 are connected in an integral manner. In other embodiments, the first edge banding 1313 and the second edge banding 1314 can also be connected in other ways. As long as the connection method can fix the first edge banding 1313 and the second edge banding 1314, the purpose of this embodiment can be achieved. Here, the connection method of the first edge banding 1313 and the second edge banding 1314 is not limited.

[0128] Referring again to Figures 1 to 9, in some alternative embodiments, the liquid cooling plate 120 has a liquid cooling portion 121 and a mounting portion 122, the mounting portion 122 extending along a direction facing the cover 131, and there are at least two mounting portions 122, the at least two mounting portions 122 being located on opposite sides of the liquid cooling portion 121 along a second direction.

[0129] The first connecting surface 1221 is the top surface of the mounting part 122, and the abutting surface 1211 is located on the liquid cooling part 121 and faces the battery module.

[0130] There is an angle between the second direction and the first direction.

[0131] It should be noted that the liquid cooling section 121 faces the battery module directly, ensuring that the liquid cooling plate 120 can effectively exchange heat. This direct contact helps to dissipate heat quickly, keeping the battery module within its optimal temperature range and improving its performance and lifespan.

[0132] Furthermore, due to the design of the mounting portion 122, the liquid cooling plate 120 can be installed and removed more easily. The mounting portion 122 extends along the direction facing the cover 131 and is located on opposite sides of the liquid cooling portion 121, providing additional support and stability for the liquid cooling plate 120. This design helps to fix the position of the liquid cooling plate 120 and prevent it from moving or deforming during use.

[0133] It should be noted that, as shown in Figure 2, the second direction Y can be the width direction of the upper box 130.

[0134] In some alternative embodiments, the bottom end of the sidewall 132 has a protrusion 1321 that extends toward the side facing the mounting portion 122 and matches the shape of the mounting portion 122.

[0135] The third connecting surface 13211 is the side wall 132 of the protrusion 1321 facing the second connecting surface 1311.

[0136] It should be noted that the protrusion 1321 matches the shape of the mounting part 122, providing a secure connection and ensuring precise alignment between components. This simplifies the assembly process, reduces installation errors, and improves production efficiency.

[0137] Furthermore, the third connecting surface 13211 is the side wall 132 of the protrusion 1321 facing the second connecting surface 1311. This design achieves a better sealing effect. The tight fit helps prevent dust, moisture, or other external contaminants from entering the battery box 100, protecting the safety and performance of the battery module.

[0138] In some alternative embodiments, a seal 140 is also included, which is disposed between the upper housing 130 and the liquid cooling plate 120.

[0139] It should be noted that the seal 140 prevents dust, moisture, and other contaminants from entering the interior of the upper housing 130, protecting critical components such as the battery module from external environmental influences. Effective sealing reduces the risk of leakage and contamination, thereby lowering the frequency and cost of maintenance and repair, and extending the system's lifespan.

[0140] In some embodiments, the seal 140 may be a sealing ring.

[0141] In some embodiments, the seal 140 is foamed silicone, which is adhered to the sealing area formed after the liquid cooling plates 120 are spliced.

[0142] Referring again to Figures 1 to 9, in some optional embodiments, the seal 140 includes a first sealing surface 141 and a second sealing surface 142, with at least two first sealing surfaces 141 and at least two second sealing surfaces 142 connected together.

[0143] The first sealing surface 141 is located between the side wall 132 and the box cover 131, and the second sealing surface 142 is located between the first connecting surface 1221 and the second connecting surface 1311, and the extending direction of the second sealing surface 142 is consistent with the extending direction of the first connecting surface 1221.

[0144] It should be noted that by providing a first sealing surface 141 between the side wall 132 and the cover 131, and a second sealing surface 142 between the first connecting surface 1221 and the second connecting surface 1311, multi-layer sealing protection can be achieved. This multi-layer sealing design helps prevent dust, moisture and other external contaminants from entering the battery box 100, thereby protecting the safety and performance of the battery module.

[0145] The second sealing surface 142 extends in the same direction as the first connecting surface 1221. This design ensures the continuity and consistency of the seal 140 at the connection point. This helps to achieve a more uniform sealing effect and reduces the risk of leakage.

[0146] In some alternative embodiments, a first mounting hole 1411 is formed on the first sealing surface 141. When the connector 110 connects the side wall 132 and the cover 131, it passes through the first mounting hole 1411 to press the first sealing surface 141 against the end face of the side wall 132.

[0147] A second mounting hole 1421 is provided on the second sealing surface 142. The connector 110 connects the first connecting surface 1221 and the second connecting surface 1311, passes through the second mounting hole 1421, and presses the second sealing surface 142 against the first connecting surface 1221.

[0148] It should be noted that by providing a first mounting hole 1411 on the first sealing surface 141, the connector 110 can pass through the first mounting hole 1411 and apply pressure to press the first sealing surface 141 against the end face of the side wall 132, which helps to ensure tight contact between the seal 140 and the connecting surface, thereby improving the sealing effect.

[0149] Accordingly, by providing a second mounting hole 1421 on the second sealing surface 142, the connector 110 can pass through the second mounting hole 1421 and apply pressure to press the second sealing surface 142 onto the first connecting surface 1221, which helps to ensure close contact between the seal 140 and the connecting surface, thereby improving the sealing effect and preventing the infiltration of dust, moisture and other contaminants.

[0150] Specifically, the connector 110 passes through the second connecting hole 1312, the second mounting hole 1421, and the first connecting hole 1222 in sequence. While satisfying the installation of the first connecting surface 1221 and the second connecting surface 1311, the second sealing surface 142 can be fastened between the first connecting surface 1221 and the second connecting surface 1311. The installation force applied by the connector 110 can be directly applied to the second sealing surface 142 to improve the sealing effect.

[0151] Figure 10 is a cross-sectional view of the battery box using the first type of connector according to an embodiment of this application. As shown in Figure 10, in some optional embodiments, the mounting part 122 is a hollow structure, and the connector 110 is a rivet nut 111.

[0152] It should be noted that the hollow structure of the mounting part 122 can significantly reduce the overall weight of the battery box 100, thereby improving energy efficiency and portability.

[0153] The rivet nut 111, acting as a connector 110, provides strong connection strength in thin-walled and hollow structures, ensuring a secure connection between the mounting part 122 and other components through its expansion and clamping action. The use of the rivet nut 111 simplifies the installation process because it can be installed from one side without needing to enter the interior of the hollow structure. This feature makes installation easier in areas with limited space or difficult access.

[0154] In the above scheme, the rivet nut 111 serves to limit the compression of the seal 140 and also connects the cover 131 and the liquid cooling plate 120.

[0155] Figure 11 is a cross-sectional view of the battery box using the second type of connector according to an embodiment of this application. As shown in Figure 11, the mounting part 122 is a solid structure, and the connector 110 is a wire thread sleeve 112.

[0156] In some embodiments, the solid mounting portion 122 provides greater mechanical strength and rigidity. The wire thread insert 112, as a connector 110, provides greater wear resistance in threaded connections.

[0157] The wire thread insert 112 is a new type of internal thread fastener suitable for threaded connections. It is screwed into and fastened in the threaded hole of one of the connected parts 110 to form a standard internal thread. The bolt (or screw) is then screwed into it. It is also known as a threaded insert, or simply a thread insert.

[0158] In the above scheme, the steel wire thread insert 112 is used to replace the rivet nut 111 for connecting the cover 131 to the liquid cooling plate 120. Correspondingly, the mounting part 122 needs to be a solid structure, and the inclined first connecting surface 1221 at the top of the side frame structure needs to be designed with a step. The step is the area for pasting the sealing element 140, and at the same time, it serves to limit the compression of the sealing element 140.

[0159] It should be noted that the wire threaded sleeve 112 matched with the solid profile replaces the rivet nut 111 matched with the hollow profile. Due to the different position of the seal 140, the width of the second sealing surface 142 can be saved, which is more conducive to the dimensional optimization of the upper box 130 in the width direction and reduces the width of the entire battery box 100.

[0160] Figure 12 is an assembly cross-sectional view of the battery box using the first type of connector and mounting part according to an embodiment of this application, and Figure 13 is an assembly cross-sectional view of the battery box using the second type of connector and mounting part according to an embodiment of this application.

[0161] Example as follows: As shown in Figure 12, H1 represents the width of the mounting part 122 under the scheme of using a cavity profile matching rivet nut 111.

[0162] As shown in Figure 13, H2 represents the width of the mounting portion 122 under the scheme of using a solid profile matching wire threaded sleeve 112. Due to the different schemes selected, the width of the second sealing surface 142 under the wire threaded sleeve 112 scheme is reduced, which makes H2 smaller than H1.

[0163] The battery box provided in this application includes a battery module; a connector; a lower box body having a first connecting surface and an abutting surface, the abutting surface being located at the bottom end of the lower box body and used to support the battery module, and the extension direction of the first connecting surface and the extension direction of the abutting surface having an angle; and an upper box body having a second connecting surface facing the first connecting surface and connected to the first connecting surface through the connector to form a receiving cavity for accommodating the battery module.

[0164] By combining the lower and upper housings to form a cavity for accommodating the battery module, the structure of the upper housing can be reduced. In addition, the first connecting surface is inclined relative to the abutting surface, which reduces the width of the upper housing, further reducing the volume of the battery box, reducing the space occupied during installation, making the battery box more compact, and facilitating subsequent maintenance.

[0165] In addition, embodiments of this application also provide an electronic device including the battery case 100 of any of the above.

[0166] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0167] Furthermore, 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. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0168] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A battery box (100), characterized in that, include: Battery module; Connector (110); The lower housing has a first connecting surface (1221) and an abutting surface (1211). The abutting surface (1211) is located at the bottom end of the lower housing and is used to support the battery module. The extension direction of the first connecting surface (1221) and the extension direction of the abutting surface (1211) have an angle. The upper housing (130) has a second connecting surface (1311), which faces the first connecting surface (1221) and is connected to the first connecting surface (1221) through the connector (110) to form a receiving cavity for accommodating the battery module.

2. The battery box (100) according to claim 1, characterized in that, It also includes a liquid cooling plate (120) for heat exchange with the battery module; The liquid cooling plate (120) is the lower housing.

3. The battery box (100) according to claim 2, characterized in that, The extension direction of the first connecting surface (1221) is consistent with the extension direction of the second connecting surface (1311); The angle between the extension direction of the first connecting surface (1221) and the extension direction of the abutting surface (1211) is an acute angle.

4. The battery box (100) according to claim 2 or 3, characterized in that, The upper box (130) includes a box cover (131) and side walls (132), wherein there are at least two side walls (132), and the at least two side walls (132) are located on opposite sides of the box cover (131) along a first direction; The cover (131) has a second connecting surface (1311) on the side facing the liquid cooling plate (120), and the side wall (132) has a third connecting surface (13211). The first connecting surface (1221) is spliced ​​with the third connecting surface (13211), and the second connecting surface (1311) covers the first connecting surface (1221) and the third connecting surface (13211).

5. The battery box (100) according to claim 4, characterized in that, The liquid cooling plate (120) has a liquid cooling part (121) and a mounting part (122), the mounting part (122) extends along the direction facing the cover (131), and there are at least two mounting parts (122), the at least two mounting parts (122) are located on opposite sides of the liquid cooling part (121) along a second direction; The first connecting surface (1221) is the top surface of the mounting part (122), and the abutting surface (1211) is located on the liquid cooling part (121) and faces the battery module; The second direction and the first direction form an angle.

6. The battery box (100) according to claim 5, characterized in that, The bottom end of the sidewall (132) has a protrusion (1321) that extends toward the side facing the mounting portion (122) and matches the shape of the mounting portion (122); The third connecting surface (13211) is the side wall (132) of the protrusion (1321) facing the second connecting surface (1311).

7. The battery box (100) according to claim 4, characterized in that, It also includes a seal (140) disposed between the upper housing (130) and the liquid cooling plate (120); The sealing element (140) includes a first sealing surface (141) and a second sealing surface (142), and there are at least two first sealing surfaces (141) and at least two second sealing surfaces (142), and at least two first sealing surfaces (141) and at least two second sealing surfaces (142) are connected. The first sealing surface (141) is located between the side wall (132) and the box cover (131), and the second sealing surface (142) is located between the first connecting surface (1221) and the second connecting surface (1311), and the extension direction of the second sealing surface (142) is consistent with the extension direction of the first connecting surface (1221).

8. The battery box (100) according to claim 7, characterized in that, A first mounting hole (1411) is provided on the first sealing surface (141). When the connector (110) connects the side wall (132) and the box cover (131), it passes through the first mounting hole (1411) to press the first sealing surface (141) against the end face of the side wall (132). A second mounting hole (1421) is provided on the second sealing surface (142). The connector (110) connects the first connecting surface (1221) and the second connecting surface (1311), passes through the second mounting hole (1421), and presses the second sealing surface (1421) against the first connecting surface (1221).

9. The battery box (100) according to claim 5, characterized in that, The mounting part (122) is a hollow structure, and the connector (110) is a rivet nut (111); or, The mounting part (122) is a solid structure, and the connector (110) is a wire thread sleeve (112).

10. An electronic device, characterized in that, Includes the battery box (100) as described in any one of claims 1 to 9.

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