Battery housing, battery pack and electrical devices

Abstract

This application provides a battery housing, a battery pack, and an electrical device, relating to the field of battery protection technology, and addresses the technical problem of low support strength of the horizontal and vertical beams in a battery housing. In this battery housing, horizontal and vertical beams are arranged in an alternating pattern, with the ends of the horizontal beams connected to the vertical beams. The ends of the horizontal beams have clearance notches. A first connector is located on the vertical beam facing the horizontal beam and is connected to it. A second connector is located above the clearance notch and is connected to the horizontal beam, forming a clearance space between the second connector and the bottom wall of the clearance notch. The second connector is also connected to the first connector. By adding a first and a second connector at the connection points of the vertical and horizontal beams, this application further connects the beams, thereby enhancing the connection strength between them. This, in turn, strengthens the support strength for each individual battery cell in the battery pack using this battery housing, improving the support reliability of the battery housing.

Description

Technical Field

[0001] This application relates to the field of battery protection technology, and in particular to a battery housing, battery pack and power supply device. Background Technology

[0002] Because the discharge power of a single battery is limited and cannot support some high-power electrical devices, multiple single batteries are arranged in sequence to form a battery pack to increase the discharge power of the entire battery pack. However, during the charging and discharging process of the battery pack, multiple single batteries in the battery pack charge and discharge at the same time, generating a lot of heat, which easily accumulates in the battery pack.

[0003] In related technologies, a liquid cooling system is installed in the battery pack to exchange heat with multiple individual cells, carrying away the heat accumulated in the battery pack. However, the flow of coolant between the components of the liquid cooling system relies on the delivery of liquid cooling pipes. Therefore, the layout of the liquid cooling pipes needs to be considered in the battery pack. In addition, the battery pack has a battery housing for housing and supporting multiple individual cells. The battery housing has staggered horizontal and vertical beams, which form multiple installation spaces. These installation spaces are the installation spaces for multiple individual cells, separating them while providing support to each individual cell. When arranging the liquid cooling pipes in the battery pack, they need to pass through the joints of the horizontal and vertical beams. Therefore, clearance notches need to be provided at both ends of the horizontal beams to allow the liquid cooling pipes to be arranged along a relatively straight path.

[0004] Therefore, in related technologies, the battery box has a technical problem of low support strength of the horizontal and vertical beams due to the avoidance gaps set at the connection of the horizontal and vertical beams. Utility Model Content

[0005] In view of the above problems, this application provides a battery box, a battery pack, and an electrical device, aiming to solve the technical problem of low support strength of the horizontal and vertical beams of the battery box, so as to improve the support strength of the horizontal and vertical beams of the battery box for each individual battery cell, thereby improving the support reliability of the battery box, avoiding shaking and collision of individual batteries in the battery box, thereby reducing the risk of short circuit, electrolyte leakage, coolant leakage, and battery pack overheating of the battery pack composed of the battery box and multiple individual batteries, and thus improving the safety of the battery pack in use.

[0006] To achieve the above objectives, the embodiments of this application provide the following technical solutions:

[0007] The first aspect of this application provides a battery housing, including:

[0008] Longitudinal beam;

[0009] A crossbeam is arranged in an alternating pattern with the longitudinal beams, and the ends of the crossbeams are connected to the longitudinal beams; the ends of the crossbeams have clearance notches.

[0010] The first connector is disposed at the position where the longitudinal beam faces the transverse beam and is connected to the longitudinal beam;

[0011] The second connector is disposed above the clearance notch and connected to the crossbeam. A clearance space is formed between the second connector and the bottom wall of the clearance notch, and the second connector is connected to the first connector.

[0012] This configuration, by adding a first and second connector at the connection between the longitudinal and transverse beams, and further connecting the beams through these connectors, enhances the connection strength between them. This, in turn, strengthens the support of the battery housing for each individual cell in the battery pack, thereby improving the reliability of the battery housing. Furthermore, a clearance space is formed between the second connector and the bottom wall of the clearance notch to allow the passage of liquid cooling pipes in the liquid cooling system. Therefore, this improvement does not affect the layout path of the liquid cooling system.

[0013] In some embodiments, the first connector includes a connecting plate and a reinforcing plate, the reinforcing plate being connected to the longitudinal beam, the connecting plate being disposed on the side of the reinforcing plate facing the second connector and being connected to the reinforcing plate, and the second connector being connected to the connecting plate.

[0014] This design increases the contact area between the first and second connectors, avoids the concentration of interaction forces between them, and makes the force at the connection between the first and second connectors more evenly distributed, thereby improving the connection strength between the first and second connectors and enhancing the support reliability of the battery box.

[0015] In some embodiments, the area of ​​the reinforcing plate is larger than the area of ​​the connecting plate.

[0016] This configuration further increases the contact area between the first connector and the second connector, further improves the connection strength between the first connector and the second connector, and further enhances the support reliability of the battery box.

[0017] In some embodiments, the connecting plate has a first mating surface on the side facing the second connector, and the second connector has a second mating surface that matches the first mating surface at the end facing the connecting plate. When the first connector and the second connector are connected, the first mating surface fits into the second mating surface.

[0018] This design makes the connection between the first and second connectors smoother and tighter, and the stress more even, thereby improving the connection strength between the first and second connectors.

[0019] In some embodiments, the first mating surface is a first mating inclined surface that forms an angle with the vertical, and the second mating surface is a second mating inclined surface that matches the first mating inclined surface.

[0020] This configuration increases the contact area between the first and second connecting surfaces, thereby improving the connection strength between the first and second connecting parts.

[0021] In some embodiments, the battery housing further includes a first threaded connector, the second connector has a through hole through which the first threaded connector can pass, and the first connector has a first threaded hole that matches the first threaded connector. When the first connector and the second connector are connected, the first threaded connector passes through the through hole and is threadedly connected to the first threaded hole.

[0022] This design allows for a detachable connection between the first and second connectors. When the liquid cooling pipeline requires maintenance or replacement, the connection between the first and second connectors is severed by removing the first threaded connector from its first threaded hole. This allows the liquid cooling pipeline to be moved out of the clearance space, preventing damage to either connector and ensuring uninterrupted future connection. Furthermore, the threaded connection between the first threaded connector and the first threaded hole is simple, low-cost, and easy to implement.

[0023] In some embodiments, the battery housing further includes a reinforcing cylinder, which is embedded in the through hole and coaxially disposed with the through hole, and the first threaded connector is configured to pass through the reinforcing cylinder.

[0024] This design avoids direct contact between the first threaded connector and the through-hole wall of the second connector, reducing wear and deformation of the first connector. Furthermore, the addition of the reinforcing sleeve makes the connection structure between the first threaded connector and the second connector more compact, distributing the interaction force between them more evenly and avoiding stress concentration, thereby improving the connection strength between the first threaded connector and the second connector.

[0025] In some embodiments, the second connector has a reinforcing portion at one end near the first connector, the reinforcing portion extending toward the clearance space; and / or

[0026] The battery housing also includes a buffer and a second threaded connector. The crossbeam has a bearing surface and a second threaded hole. The second connector is disposed on the bearing surface and is threaded through the second connector and connected to the second threaded hole. The buffer is disposed between the second connector and the bearing surface and covers the bearing surface.

[0027] This design serves two purposes. First, it increases the contact area between the second and first connectors, making the interaction forces between them more evenly distributed and preventing force concentration. It also increases the maximum static friction between them, improving their anti-slip performance and thus enhancing the connection strength. Second, the second threaded part and the second threaded hole allow for a detachable connection between the second connector and the crossbeam, facilitating the arrangement, maintenance, and replacement of the liquid cooling pipes. The buffer absorbs vibrations between the second connector and the crossbeam, preventing direct contact and transforming the rigid connection into a flexible one, thereby strengthening the connection between the second connector and the crossbeam and ultimately improving the support strength of the battery box.

[0028] A second aspect of this application provides a battery pack, including a battery assembly and a battery housing as described in any of the above claims, wherein the battery assembly is located within the battery housing.

[0029] The battery pack provided in this application embodiment has the same beneficial effects as the battery box provided in the above embodiment, and will not be described again here.

[0030] A third aspect of this application provides an electrical device including the battery pack described above.

[0031] The electrical device provided in this application embodiment has the same beneficial effects as the battery box provided in the above embodiment, and will not be described again here.

[0032] In addition to the technical problems solved by the embodiments of this application, the technical features constituting the technical solutions, and the beneficial effects brought about by the technical features of these technical solutions described above, other technical problems that can be solved by the battery box, battery pack, and power device provided by the embodiments of this application, other technical features included in the technical solutions, and the beneficial effects brought about by these technical features will be further explained in detail in the specific implementation. Attached Figure Description

[0033] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0034] Figure 1 This is a schematic diagram of a battery housing provided in an embodiment of this application;

[0035] Figure 2 An exploded view of the battery housing provided in an embodiment of this application;

[0036] Figure 3 A schematic diagram of the structure of the first connector provided in an embodiment of this application;

[0037] Figure 4 This is a schematic diagram of a structure of the second connector provided in an embodiment of this application;

[0038] Figure 5 This is another structural schematic diagram of the second connector provided in an embodiment of this application.

[0039] Explanation of reference numerals in the attached figures:

[0040] 100 - Battery housing;

[0041] 110 - Longitudinal beam;

[0042] 120 - Crossbeam; 121 - Clearance notch; 122 - Bearing surface; 123 - Second threaded hole;

[0043] 130 - First connector; 131 - Connecting plate; 132 - Reinforcing plate; 133 - First threaded hole;

[0044] 1311 - First mating surface;

[0045] 140 - Second connector; 141 - Clearance space; 142 - Through hole; 143 - Reinforcing part;

[0046] 150 - First threaded connector;

[0047] 160 - Second threaded connector. Detailed Implementation

[0048] 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. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0049] This application provides an electrical device that includes a battery pack for providing electrical energy to the device. The electrical device includes, but is not limited to, electric vehicles, electric bicycles, trams, drones, energy storage power stations, and portable medical devices.

[0050] Because the discharge power of a single battery cell is limited and cannot support some high-power electrical devices, the battery pack in the device includes a battery array and a battery housing, with the battery array located inside the battery housing. The battery array is formed by arranging multiple individual batteries in sequence to increase the overall discharge power of the battery pack.

[0051] During the charging and discharging process of a battery pack, multiple individual cells within the pack charge and discharge simultaneously, generating a significant amount of heat that tends to accumulate within the battery casing. Therefore, a liquid cooling system is incorporated into the battery pack. This system includes liquid cooling plate assemblies, a circulation pump, a radiator, an expansion tank, and liquid cooling pipes. The expansion tank, circulation pump, liquid cooling plate assemblies, and radiator are sequentially connected by liquid cooling pipes, forming a coolant flow loop. Each liquid cooling plate assembly comprises multiple liquid cooling plates, each corresponding to one of the individual cells in the battery pack, to exchange heat with the cells and remove the heat generated during charging and discharging. Therefore, the arrangement of the liquid cooling pipes corresponding to the multiple liquid cooling plates within the battery pack needs to be carefully considered.

[0052] Furthermore, the battery pack's battery housing includes staggered horizontal and vertical beams, forming multiple mounting spaces for individual cells. These spaces separate the individual cells while providing support to each cell, securing them relatively within the housing. When liquid cooling pipes are arranged within the battery pack, they need to pass through the joints of the horizontal and vertical beams. Therefore, clearance notches are provided at the ends of the beams to allow the liquid cooling pipes to be arranged along a relatively straight path. However, these clearance notches at the beam joints mean that in the event of a collision, the interaction forces between the beams cause damage to the structure at the clearance notches, resulting in insufficient support for the individual cells. This leads to cell movement and collisions, posing risks of short circuits, electrolyte leakage, coolant leakage, and overheating. Ultimately, the key technical challenge in mitigating these risks lies in the low support strength of the horizontal and vertical beams within the battery housing.

[0053] To address the aforementioned issues, this application provides a battery housing. The following detailed description of this application, in conjunction with the accompanying drawings, will enable those skilled in the art to gain a clearer and more comprehensive understanding of its contents.

[0054] Figure 1 This is a schematic diagram of a battery housing provided in an embodiment of this application; Figure 2 This is an exploded view of a battery casing provided in an embodiment of this application. Figure 1 and Figure 2 As shown, the battery box 100 includes a longitudinal beam 110, a transverse beam 120, a first connector 130, and a second connector 140.

[0055] The crossbeams 120 and longitudinal beams 110 are arranged alternately, with the ends of the crossbeams 120 connected to the longitudinal beams 110. The ends of the crossbeams 120 have clearance notches 121. It should be noted that both the crossbeams 120 and longitudinal beams 110 extend horizontally, but in different directions. Figure 1As shown, taking the X, Y, and Z axes in the coordinate system as an example, the longitudinal beam 110 extends along the X-axis, and the transverse beam 120 extends along the Y-axis. The number of transverse beams 120 can be two, three, four, five, six, etc., with multiple transverse beams 120 spaced apart along the X-axis. There are two longitudinal beams 110 spaced apart along the Y-axis. Each longitudinal beam is fixedly connected to both ends of the transverse beams 120. Each end of each transverse beam 120 has a clearance notch 121. The transverse beams 120 and longitudinal beams 110 together enclose multiple installation spaces for placing multiple individual batteries to form a battery pack. The transverse beams 120 and longitudinal beams 110 provide support to each individual battery, allowing each individual battery to be fixed relative to the transverse beams 120 and longitudinal beams 110 along the X and Y axes. It should also be noted that the fixing connection between the ends of the transverse beams 120 and the longitudinal beams 110 can be welding, bolt and screw hole connection, snap-fit ​​connection, adhesive bonding, etc.

[0056] Additionally, the first connector 130 is positioned on the longitudinal beam 110 facing the transverse beam 120 and is connected to the longitudinal beam 110; the second connector 140 is positioned above the clearance notch 121 and is connected to the transverse beam 120, forming a clearance space 141 between the second connector 140 and the bottom wall of the clearance notch 121, and the second connector 140 is connected to the first connector 130. The liquid cooling pipes in the liquid cooling system can then pass through the clearance space 141 formed between the second connector 140 and the bottom wall of the clearance notch 121, and be arranged within the battery housing 100.

[0057] Of course, in other embodiments, the battery housing 100 also includes a lower housing and an upper end cover, wherein the lower housing has an opening at the top, the upper end cover is used to fasten to the opening, and the crossbeam 120 and the longitudinal beam 110 are disposed in the lower housing to provide installation space for each individual battery cell in the battery housing 100.

[0058] In this embodiment, by adding a first connector 130 and a second connector 140 at the connection between the longitudinal beam 110 and the transverse beam 120, and further connecting the longitudinal beam 110 and the transverse beam 120 via the first connector 130 and the second connector 140 after the end of the transverse beam 120 is fixedly connected to the longitudinal beam, the connection strength between the longitudinal beam 110 and the transverse beam 120 is enhanced, improving the support strength of the battery box 100 for each individual battery cell in the battery pack, thereby improving the support reliability of the battery box 100. This also avoids shaking and collision of the individual batteries in the battery box 100, reducing the risk of short circuits, electrolyte leakage, coolant leakage, and overheating of the battery pack, and improving the safety of the battery pack. Furthermore, a clearance space 141 is formed between the bottom wall of the second connector 140 and the clearance notch 121 to allow the passage of the liquid cooling pipe in the liquid cooling system. Therefore, while improving the support reliability of the battery box 100 in this embodiment, the layout path of the liquid cooling pipe will not be affected.

[0059] Furthermore, such as Figure 2 and Figure 3 As shown, the first connector 130 includes a connecting plate 131 and a reinforcing plate 132. The reinforcing plate 132 is connected to the longitudinal beam 110. The connecting plate 131 is disposed on the side of the reinforcing plate 132 facing the second connector 140 and is connected to the reinforcing plate 132. The second connector 140 is connected to the connecting plate 131. The arrangement of the connecting plate 131 and the reinforcing plate 132 increases the contact area between the first connector 130 and the second connector 140, avoiding the concentration of interaction forces between them. This results in a more even distribution of force at the connection point, thereby improving the connection strength between the first connector 130 and the second connector 140, i.e., improving the connection strength between the crossbeam and the longitudinal beam, thus enhancing the support reliability of the battery box 100.

[0060] For example, the reinforcing plate 132 and the longitudinal beam 110, and the connecting plate 131 and the reinforcing plate 132 are fixedly connected. The fixed connection method can be welding, bolt and screw hole connection, snap connection, adhesive bonding, etc.

[0061] And in some embodiments, such as Figure 3 As shown, the area of ​​the reinforcing plate 132 is larger than that of the connecting plate 131, so as to further increase the contact area between the first connecting member 130 and the second connecting member 140, further improve the connection strength between the first connecting member 130 and the second connecting member 140, that is, further improve the connection strength between the crossbeam and the longitudinal beam, and further improve the support reliability of the battery box 100.

[0062] In some embodiments, such as Figure 2 and Figure 3 As shown, the connecting plate 131 has a first mating surface 1311 on the side facing the second connector 140, and the second connector 140 has a second mating surface that matches the first mating surface 1311 at the end facing the connecting plate 131. When the first connector 130 and the second connector 140 are connected, the first mating surface 1311 fits against the second mating surface, so that the connection between the first connector 130 and the second connector 140 is flatter and tighter, and the force is more even, thereby improving the connection strength between the first connector 130 and the second connector 140, and thus avoiding gaps at the connection between the first connector 130 and the second connector 140, which would affect the connection strength between the first connector 130 and the second connector 140.

[0063] Furthermore, such as Figure 2 and Figure 3 As shown, the first mating surface 1311 is a first mating inclined surface with an angle to the vertical, and the second mating surface is a second mating inclined surface that matches the first mating inclined surface. This increases the contact area between the first mating surface 1311 and the second mating surface, improving the connection strength between the first connector 130 and the second connector 140. In addition, the arrangement of the first and second mating inclined surfaces allows the interaction forces between the first connector 130 and the second connector 140 to cancel each other not only along the Y-axis but also along the Z-axis. This ensures that the interaction forces between the first connector 130 and the second connector 140 are not concentrated in the Y-axis direction, further enhancing the connection strength between the first connector 130 and the second connector 140, i.e., improving the connection strength between the crossbeam and the longitudinal beam, and improving the support reliability of the battery box 100.

[0064] For example, the angle between the first and second mating inclined surfaces and the vertical direction ranges from 5° to 30°, such as 5°, 10°, 15°, 20°, 25°, 30°, etc.

[0065] In addition, such as Figure 2 As shown, the battery housing 100 also includes a first threaded connector 150, a second connector 140 having a through hole 142 through which the first threaded connector 150 passes, and a first connector 130 having a first threaded hole 133 that matches the first threaded connector 150. When the first connector 130 and the second connector 140 are connected, the first threaded connector 150 passes through the through hole 142 and is threadedly connected to the first threaded hole 133. It should be noted that the first threaded hole 133 is provided on the connecting plate 131 of the first connector 130. The connecting plate 131 is fixedly connected to the reinforcing plate 132, and the reinforcing plate 132 is fixedly connected to the longitudinal beam 110. When the first threaded connector 150 passes through the through hole 142 and is threadedly connected to the first threaded hole 133, the first connector 130 and the second connector 140 are relatively fixed.

[0066] This design allows for a detachable connection between the first connector 130 and the second connector 140. When the liquid cooling pipeline needs maintenance or replacement, the connection between the first connector 130 and the second connector 140 is broken by removing the first threaded connector 150 from the first threaded hole 133 of the first connector 130. This allows the liquid cooling pipeline to be moved out of the clearance space 141, thus avoiding damage to either the first connector 130 or the second connector 140 and not affecting the subsequent connection of the first connector 130 and the second connector 140. Furthermore, the threaded connection between the first threaded connector 150 and the first threaded hole 133 is simple in structure, low in cost, and easy to implement.

[0067] Another example is that the detachable connection between the first connector 130 and the second connector 140 can also be a snap-fit ​​connection, a pin connection, a magnetic connection, etc. The first threaded connector 150 is a bolt.

[0068] In some embodiments, the battery housing 100 further includes a reinforcing cylinder, which is embedded in and coaxially disposed with the through hole 142. The first threaded connector 150 is configured to pass through the reinforcing cylinder. The reinforcing cylinder avoids direct contact between the first threaded connector 150 and the wall of the through hole 142 of the second connector 140, reducing wear and deformation of the first connector 130. Furthermore, the reinforcing cylinder makes the connection structure between the first threaded connector 150 and the second connector 140 more compact, and the interaction force between them is more evenly distributed, avoiding force concentration, thereby improving the connection strength between the first threaded connector 150 and the second connector 140.

[0069] In addition, combined Figure 2 , Figure 4 and Figure 5 As shown, the second connector 140 has a reinforcing portion 143 at one end near the first connector 130. The reinforcing portion 143 extends toward the clearance space 141 to increase the contact area between the second connector 140 and the first connector 130, making the interaction force between the second connector 140 and the first connector 130 more evenly distributed, avoiding force concentration. The increased contact area also increases the maximum static friction between the two, improving the anti-slip performance between the second connector 140 and the first connector 130, thereby improving the connection strength between the first connector 130 and the second connector 140, that is, improving the connection strength between the crossbeam and the longitudinal beam.

[0070] An example, combined Figure 2 and Figure 4As shown, the reinforcing part 143 extends toward the clearance space 141 so that the reinforcing part 143 forms a second mating slope and fits against the first mating slope to increase the contact area between the first mating surface 1311 and the second mating surface, thereby improving the connection strength of the first connector 130 and the second connector 140 when they are connected, that is, improving the connection strength between the crossbeam and the longitudinal beam.

[0071] Another example, combined Figure 2 and Figure 5 As shown, the reinforcing part 143 is in Figure 4 Based on the above, it continues to extend towards the clearance space 141. The connecting plate 131 also has a connecting plane extending vertically on the side facing the first connecting member 130, so that the part of the reinforcing part 143 away from the clearance space 141 forms a second mating slope, which fits with the first mating slope. The part of the reinforcing part 143 near the clearance space 141 fits with the connecting plane, thereby further increasing the contact area between the first connecting member 130 and the second connecting member 140, making the interaction force between the second connecting member 140 and the first connecting member 130 more dispersed and uniform, avoiding force concentration, thereby improving the connection strength between the first connecting member 130 and the second connecting member 140, that is, improving the connection strength between the crossbeam and the longitudinal beam, and thus improving the support strength of the battery box 100.

[0072] In addition, such as Figure 2 As shown, the battery housing 100 also includes a buffer and a second threaded connector 160. The crossbeam 120 has a bearing surface 122 with a second threaded hole 123. A second connector 140 is disposed on the bearing surface 122. The second threaded connector 160 passes through the second connector 140 and is threadedly connected to the second threaded hole 123. The buffer is disposed between the second connector 140 and the bearing surface 122, and covers the bearing surface 122. For example, the crossbeam 120 has a bearing groove for supporting the end of the second connector 140 away from the first connector 130, and the bearing groove has a bearing surface 122.

[0073] The second threaded component and the second threaded hole 123 enable a detachable fixed connection between the second connector 140 and the crossbeam 120. Combined with the first threaded component and the first threaded hole 133, the second connector 140 can be completely disassembled, thereby fully exposing the clearance space 141 to facilitate the arrangement, maintenance, and replacement of the liquid cooling pipes. In addition, the buffer component can absorb the vibration between the second connector 140 and the crossbeam 120, avoiding direct contact between the two and transforming the rigid connection into a flexible connection. This enhances the connection strength between the second connector 140 and the crossbeam 120, thereby improving the support strength of the battery box 100.

[0074] For example, the buffer can be a rubber pad, silicone pad, polytetrafluoroethylene pad, polyurethane pad, etc.; the second threaded connector 160 is a bolt.

[0075] In addition, in all the above embodiments, the materials of the longitudinal beam 110, the cross beam 120, the connecting plate 131 and the reinforcing plate 132 in the first connecting member 130, the second connecting member 140, and the reinforcing cylinder can be aluminum alloy, magnesium alloy, carbon fiber composite epoxy resin, titanium alloy, aluminum-lithium alloy, etc., so that the battery box 100 can have high strength.

[0076] It should be noted that the terms "one embodiment," "embodiment," "exemplary embodiment," "some embodiments," etc., mentioned in the specification indicate that the described embodiment may include a specific feature, structure, or characteristic, but not every embodiment necessarily includes that specific feature, structure, or characteristic. Furthermore, such phrases do not necessarily refer to the same embodiment. Moreover, when a specific feature, structure, or characteristic is described in connection with an embodiment, implementing such a feature, structure, or characteristic in conjunction with other embodiments, whether explicitly described or not, is within the knowledge scope of those skilled in the art.

[0077] Generally speaking, terms should be understood at least in part by their use in context. For example, at least in part by context, the term "one or more" as used in the text can be used to describe any feature, structure, or characteristic of the singular meaning, or a combination of features, structures, or characteristics of the plural meaning. Similarly, at least in part by context, terms such as "a" or "the" can also be understood to convey either singular or plural usage.

[0078] It should be readily understood that the terms “on,” “above,” and “on top of” in this application should be interpreted in the broadest possible sense, such that “on” means not only “directly on something” but also “on something” with an intermediate feature or layer therebetween, and that “above” or “on top of” means not only “on something” but also “on something” without an intermediate feature or layer therebetween (i.e., directly on something).

[0079] Furthermore, for ease of explanation, spatially relative terms such as "below," "below," "under," "above," and "above" may be used to describe the relationship of one element or feature relative to other elements or features as shown in the figures. Spatially relative terms are intended to encompass different orientations of the device in use or operation other than those shown in the figures. The device may have other orientations (rotated 90° or in other orientations), and the spatially relative descriptive terms used herein may be interpreted accordingly.

[0080] 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 housing, characterized in that, include: Longitudinal beam (110); A crossbeam (120) is arranged in an alternating manner with the longitudinal beam (110), and the end of the crossbeam (120) is connected to the longitudinal beam (110). The end of the crossbeam (120) has a clearance notch (121). The first connector (130) is disposed at the position of the longitudinal beam (110) facing the transverse beam (120) and is connected to the longitudinal beam (110); The second connector (140) is disposed above the clearance gap (121) and connected to the crossbeam (120). A clearance space (141) is formed between the second connector (140) and the bottom wall of the clearance gap (121), and the second connector (140) is connected to the first connector (130).

2. The battery housing according to claim 1, characterized in that, The first connector (130) includes a connecting plate (131) and a reinforcing plate (132). The reinforcing plate (132) is connected to the longitudinal beam (110). The connecting plate (131) is disposed on the side of the reinforcing plate (132) facing the second connector (140) and is connected to the reinforcing plate (132). The second connector (140) is connected to the connecting plate (131).

3. The battery housing according to claim 2, characterized in that, The area of ​​the reinforcing plate (132) is larger than the area of ​​the connecting plate (131).

4. The battery housing according to claim 2, characterized in that, The connecting plate (131) has a first mating surface (1311) on the side facing the second connector (140), and the second connector (140) has a second mating surface that matches the first mating surface (1311) at the end facing the connecting plate (131). When the first connector (130) and the second connector (140) are connected, the first mating surface (1311) fits against the second mating surface.

5. The battery housing according to claim 4, characterized in that, The first mating surface (1311) is a first mating inclined surface with an angle to the vertical, and the second mating surface is a second mating inclined surface that matches the first mating inclined surface.

6. The battery housing according to any one of claims 1-5, characterized in that, The battery housing (100) further includes a first threaded connector (150), and a second connector (140) has a through hole (142) through which the first threaded connector (150) can pass. The first connector (130) has a first threaded hole (133) that matches the first threaded connector (150). When the first connector (130) and the second connector (140) are connected, the first threaded connector (150) passes through the through hole (142) and is threadedly connected to the first threaded hole (133).

7. The battery housing according to claim 6, characterized in that, The battery housing (100) also includes a reinforcing cylinder, which is embedded in the through hole (142) and coaxially arranged with the through hole (142). The first threaded connector (150) is configured to pass through the reinforcing cylinder.

8. The battery housing according to any one of claims 1-5, characterized in that, The second connector (140) has a reinforcing portion (143) at one end near the first connector (130), the reinforcing portion (143) extending toward the clearance space (141); and / or, The battery box (100) further includes a buffer and a second threaded connector (160). The crossbeam (120) has a bearing surface (122) and a second threaded hole (123) on the bearing surface (122). The second connector (140) is disposed on the bearing surface (122). The second threaded connector (160) passes through the second connector (140) and is threadedly connected to the second threaded hole (123). The buffer is disposed between the second connector (140) and the bearing surface (122) and covers the bearing surface (122).

9. A battery pack, characterized in that, It includes a battery pack and a battery housing (100) as described in any one of claims 1-8, wherein the battery pack is located within the battery housing (100).

10. An electrical device, characterized in that, Includes the battery pack as described in claim 9.

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