Battery box body, battery and electric device

Abstract

The utility model provides a battery box body, a battery and an electric device, and relates to the technical field of batteries. The battery box body comprises a box body, a cover body, a separation beam, a reinforcing plate and a first locking piece; the box body has an opening; the cover body covers the opening, a groove is formed in the surface, away from the box body, of the cover body, and the groove extends in the first direction; the separation beam is arranged in the box body; the reinforcing plate is arranged in the groove and comprises a bottom plate and two side plates connected with the bottom plate, the two side plates are arranged in a spaced mode in the second direction, and the second direction is perpendicular to the first direction; the first locking piece is fixedly connected with the reinforcing plate, the cover body and the separation beam; and in the second direction, at least one side plate and the groove side wall of the groove are arranged at intervals. And the side plates and the side walls of the grooves are arranged at intervals, so that the contact area between the reinforcing plates and the cover body can be reduced, and scratching of the reinforcing plates to the surface of the cover body is relieved.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, in particular to a battery box, a battery and an electrical device. Background Art

[0002] In related technologies, a separator beam is installed inside the battery box to facilitate the installation of battery modules. The separator beam is connected to the cover, and a reinforcement plate is added to the cover to partially strengthen the cover. This improves the torsional resistance at the connection between the cover and the separator beam, thereby enhancing the battery's modal properties. However, the reinforcement plate is prone to scratching the cover, affecting its structural strength and corrosion resistance. Utility Model Content

[0003] The embodiments of the present utility model provide a battery box, a battery and an electrical device, which can improve the technical problem that the reinforcing plate scratches the electrophoretic coating on the surface of the cover, resulting in reduced structural strength and corrosion resistance of the cover.

[0004] In the first aspect, an embodiment of the present invention provides a battery box, which includes a box body, a cover body, a partition beam, a reinforcement plate and a first locking piece; the box body has an opening; the cover body covers the opening, and a groove is provided on the surface of the cover body facing away from the box body, and the groove extends along a first direction; the partition beam is provided in the box body; the reinforcement plate is provided in the groove and includes a bottom plate and two side plates connected to the bottom plate, the two side plates are spaced apart along a second direction, and the second direction is perpendicular to the first direction; the first locking piece is fixedly connected to the reinforcement plate, the cover body and the partition beam; wherein, along the second direction, at least one side plate is spaced apart from the side wall of the groove.

[0005] In some embodiments, along the second direction, both side plates are spaced apart from the groove sidewalls of the groove.

[0006] In some embodiments, along the second direction, a spacing distance W between each side plate and an adjacent groove side wall satisfies: 5 mm ≤ W ≤ 25 mm.

[0007] In some embodiments, sealant is filled between each side plate and the adjacent groove side wall.

[0008] In some embodiments, the battery box further includes a second locking member, which is disposed at at least one end of the reinforcing plate along the first direction, and the second locking member is fixedly connected to the bottom plate and the cover.

[0009] In some embodiments, the second locking member includes a buckle, which is disposed at at least one end of the bottom plate along the first direction, and the reinforcing plate is connected to the cover body through the buckle.

[0010] In some embodiments, a first angle is formed between one of the two side panels and the bottom panel, and a second angle is formed between the other of the two side panels and the bottom panel, and both the first angle and the second angle are obtuse angles.

[0011] In some embodiments, the first angle is equal to the second angle.

[0012] In some embodiments, the angle between each side plate and the bottom plate is α, satisfying 90°<α≤150°.

[0013] In some embodiments, the cover body is provided with a first mounting hole, the first mounting hole passes through the bottom of the groove, the base plate is provided with a second mounting hole corresponding to the first mounting hole, the partition beam is provided with a third mounting hole corresponding to the first mounting hole, and the first locking member is passed through the first mounting hole, the second mounting hole and the third mounting hole to lock the cover body, the base plate and the partition beam.

[0014] In some embodiments, the opening is located at the top of the box body.

[0015] In a second aspect, an embodiment of the present invention further provides a battery, which includes the battery box of any one of the above embodiments.

[0016] In a third aspect, an embodiment of the present invention further provides an electrical device, which includes the battery of any one of the above embodiments.

[0017] Beneficial effects of the embodiments of the present utility model:

[0018] In an embodiment of the present utility model, the cover body is locally reinforced by a reinforcing plate, so that the torsional resistance of the connection position between the cover body and the partition beam can be improved, and the contact area between the reinforcing plate and the cover body can be reduced by setting the spacing between the side plate of the reinforcing plate and the groove of the cover body, thereby improving the technical problem of the reinforcing plate scratching the cover body. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0020] Figure 1 This is an exploded schematic diagram of a battery box provided by an embodiment of the present utility model;

[0021] Figure 2 This is a top view of a battery box provided by an embodiment of the present utility model;

[0022] Figure 3 For the Figure 2 Cross-section view from a medium AA perspective;

[0023] Figure 4 for Figure 3Enlarged view of middle A part;

[0024] Figure 5 Structure schematic view of the reinforcing plate provided by the embodiment of the utility model;

[0025] Figure 6 Structure schematic view of the partition beam provided by the embodiment of the utility model;

[0026] Figure 7 For Figure 4 Structure schematic view of filling sealant between middle side plate and groove side wall adjacent thereto;

[0027] Figure 8 Partial structure schematic view of the battery box provided by the embodiment of the utility model.

[0028] The figure mark: 100-battery box;10-box body;11-edge beam;12-bottom wall;20-cover body;21-groove;22-first mounting hole;30-partition beam;31-beam body;32-protruding part;33-third mounting hole;34-receiving groove;40-reinforcing plate;41-bottom plate;411-second mounting hole;412-fourth mounting hole;413-buckle;42-side plate;50-first locking piece;60-sealing piece;70-second locking piece;71-screw;80-sealant;Y-first direction;X-second direction. DETAILED DESCRIPTION

[0029] The technical scheme in the embodiments of the utility model will be described clearly and completely in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor belong to the protection scope of the utility model. In addition, it should be understood that the specific embodiments described herein are only used for illustrating and explaining the utility model, not for limiting the utility model. In the utility model, the orientation words such as 'up' and 'down' are generally used for the up and down of the device in actual use or working state, and the specific is the direction of the drawing in the drawing. And 'inner' and 'outer' are used for the contour of the device.

[0030] In the description of the specification, the terms 'an embodiment','some embodiments', 'exemplarily', 'example', or'some examples' and the like are intended to indicate that the specific features, structures, materials or characteristics related to the embodiment or example are included in at least one embodiment or example of the application. The illustrative representation of the above terms does not necessarily mean the same embodiment or example. In addition, the specific features, structures, materials or characteristics can be included in any one or more embodiments or examples in any appropriate manner.

[0031] In the following, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of this application, unless otherwise specified, "plurality" means two or more.

[0032] When describing some embodiments, the term "connected" and its derivatives may be used. For example, when describing some embodiments, the term "connected" may be used to indicate that two or more components are in direct physical or electrical contact with each other. The embodiments disclosed herein are not necessarily limited to the embodiments disclosed herein.

[0033] In battery technology, battery cases are equipped with separator beams to facilitate the installation of battery cells or modules. To improve the structural stability of the battery case, the separator beams are typically connected to the cover. To meet lightweight requirements, the cover is typically thin, so reinforcing plates are added to the cover to partially strengthen it. This improves the torsional resistance at the connection between the cover and the separator beams, thereby enhancing the battery's modal properties. However, the reinforcement plates can easily scratch the cover, reducing its structural strength and corrosion resistance.

[0034] In view of this, an embodiment of the present application provides a battery case 100 that can reduce the scratching of the reinforcing plate 40 on the cover 20. The specific structure of the battery case 100 is described in detail below with reference to the accompanying drawings.

[0035] The battery box 100 can be used to accommodate multiple battery cells or multiple battery modules. A battery module refers to a module in which multiple battery cells are fixed together by cable ties or end plates and side plates.

[0036] Reference Figures 1 to 5 The battery box 100 includes a box body 10 , a cover 20 , a partition beam 30 , a reinforcing plate 40 and a first locking member 50 .

[0037] The box body 10 has an opening for placing a battery cell or a battery module into the box body. The opening can be set at the top, bottom or side of the box body 10. Figure 1 In the embodiment, the opening is provided at the top of the box body 10. The shape of the box body 10 can be varied, and the box body 10 can be configured as a rectangle, a nearly rectangle, or a special shape.

[0038] The cover 20 covers the opening, and the cover 20 and the box body 10 define a storage space for accommodating battery cells or battery modules. The shape of the cover 20 can be adapted to the box body 10.

[0039] The partition beam 30 is arranged in the box body 10, and the partition beam 30 is connected to the cover body 20.

[0040] In some embodiments, referring to Figure 3 , the box body 10 can include a bottom wall 12 and a side beam 11. The side beam 11 is arranged around the bottom wall 12. The side beam 11 and the bottom wall 12 form a frame structure, and define an opening at the top of the frame structure (the box body 10). The cover body 20 covers the opening. The partition beam 30 is connected to the cover body 20 at the top, and connected to the bottom wall 12 of the box body 10 at the bottom.

[0041] Referring to Figure 1 , Figure 2 and Figure 4 , the surface of the cover body 20 away from the box body 10 is provided with a groove 21 extending along the first direction Y. It should be noted that the groove 21 is located on the outer surface of the cover body 20, and the extension direction of the groove 21 is adapted to the length direction of the partition beam 30.

[0042] The reinforcing plate 40 is arranged in the groove 21. The reinforcing plate 40 includes a bottom plate 41 and two side plates 42 connected to the bottom plate 41. The two side plates 42 are arranged at intervals along the second direction X. The side plate 42 is located on the side of the bottom plate 41 away from the partition beam 30. The second direction X is perpendicular to the first direction Y.

[0043] Generally, when the cover body 20 does not bear load (such as a top cover), the cover body is made thinner to meet the lightweight requirement, so the reinforcing plate 40 is needed to locally reinforce the cover body 20, improve the torsional performance of the connection position of the partition beam 30 and the cover body 20, and improve the battery mode.

[0044] The material of the reinforcing plate 40 includes but is not limited to steel, iron and their alloys, etc. Exemplarily, the reinforcing plate 40 is a sheet metal part bent. Compared with the flat reinforcing plate 40, the two side plates 42 increase the cross-sectional area of the reinforcing plate 40, and a reinforcing plate 40 with higher stiffness can be obtained.

[0045] Referring to Figure 4 , the first locking member 50 is fixedly connected to the reinforcing plate 40, the cover body 20 and the partition beam 30, so that the reinforcing plate 40, the cover body 20 and the partition beam 30 are fixedly connected to each other. It should be noted that the first locking member 50 includes but is not limited to bolts, screws, positioning pins, etc., as long as it can realize the fixed connection of the reinforcing plate 40, the cover body 20 and the partition beam 30. It should be understood that in other embodiments, the first locking member 50 can also be a locking clamp, a locking belt, a lock ring, etc.

[0046] Continuing to refer to Figure 4 , along the second direction X, at least one side plate 42 is arranged at intervals with the groove side wall of the groove 21.

[0047] By spacing at least one side plate 42 of the reinforcing plate 40 from the side wall of the groove 21 , the contact area between the reinforcing plate 40 and the cover 20 can be reduced, the scratching of the reinforcing plate 40 on the cover 20 can be alleviated, and the structural strength of the cover 20 can be improved.

[0048] In some embodiments, the cover 20 is stamped to form a groove 21 on its outer surface. A rib is also formed on its inner surface at a location corresponding to the groove 21, and the separator beam 30 is connected to the rib. This arrangement facilitates the connection between the separator beam 30 and the cover 20, while the groove 21 allows the reinforcement plate 40 to be at least partially concealed within the cover 20 (the reinforcement plate 40 and the cover 20 share a portion of the same thickness), thereby enhancing the aesthetics of the exterior and improving space utilization.

[0049] In some embodiments, the surface of the cover 20 is provided with an electrophoretic coating. This coating plays a significant role in battery performance. Through the electrophoretic process, a uniform protective coating is formed on the surface of the cover 20, enhancing both the structural strength and corrosion resistance of the cover 20. By spacing at least one side plate 42 of the reinforcing plate 40 from the sidewalls of the groove 21, the reinforcing plate 40 is less likely to scratch the electrophoretic coating on the surface of the cover 20, improving both the structural strength and corrosion resistance of the cover 20.

[0050] In order to further reduce the contact area between the reinforcing plate 40 and the cover 20, refer to Figure 4 In some embodiments, along the second direction X, the two side plates 42 are spaced apart from the side walls of the groove 21 .

[0051] Reference Figure 4 In some embodiments, along the second direction X, the spacing distance between each side plate 42 and the adjacent groove side wall is W, satisfying: 5mm≤W≤25mm.

[0052] When W≥5mm, the spacing distance between the side plate 42 and the adjacent groove side wall will not be too small, and the side plate 42 will not easily contact the groove side wall of the groove 21, which is beneficial to alleviate the scratching of the reinforcing plate 40 on the cover body 20 and improve the structural strength of the cover body 20; when W≤25mm, the spacing distance between the side plate 42 and the adjacent groove side wall will not be too large, and external foreign matter will not easily enter the spacing position and then enter the battery box 100 to cause internal structural short circuit, which is beneficial to improve battery reliability; therefore, W between 5mm and 25mm can take into account both the structural strength of the cover body 20 and the battery reliability.

[0053] Illustratively, W can be 5 mm, 9 mm, 10 mm, 13 mm, 15 mm, 17 mm, 20 mm, 23 mm, 25 mm, and any value therebetween.

[0054] Reference Figure 4 and Figure 5 In some embodiments, the two side panels 42 are symmetrically arranged, and the two side panels 42 and the bottom panel 41 are connected to form a U shape.

[0055] In some embodiments, one of the two side panels 42 forms a first angle with the bottom panel 41, and the other of the two side panels 42 forms a second angle with the bottom panel 41, with both the first and second angles being obtuse. This arrangement facilitates demolding during the preparation of the reinforcement panel 40, reducing the difficulty of preparing the reinforcement panel 40. Furthermore, the larger opening of the reinforcement panel 40 facilitates the first locking member 50 connecting the reinforcement panel 40, the cover 20, and the partition beam 30 from this side.

[0056] Furthermore, the first angle and the second angle are both obtuse angles, and the first angle and the second angle are equal, which is beneficial to improving the interface consistency of the reinforcing plate 40.

[0057] Furthermore, in some embodiments, the angle between each side plate 42 and the bottom plate 41 is α, satisfying 90°<α≤150°.

[0058] When α is greater than 90°, the angle between the side panels 42 and the bottom panel 41 is not too small, which facilitates the connection of the reinforcing panel 40, the cover 20, and the partition beam 30, and facilitates demolding during the preparation of the reinforcing panel 40. When α is less than 150°, a reinforcing panel 40 with high rigidity can be obtained. Therefore, when 90° is less than α and less than 150°, a balance is achieved between the difficulty of preparing the reinforcing panel 40 and the rigidity of the reinforcing panel 40.

[0059] Illustratively, α may be 90°, 100°, 110°, 120°, 130°, 140°, 150°, and any value therebetween.

[0060] Reference Figure 7 In some embodiments, a sealant 80 is filled between each side plate 42 and the adjacent sidewall of the groove 21. The sealant 80 is filled starting from the bottom of the groove 21. The sealant 80 can completely fill the gap between the side plate 42 and the adjacent sidewall. Alternatively, the sealant 80 can be applied only to the bottom wall 12 of the groove 21.

[0061] The sealant 80 includes but is not limited to silicone sealant, polyurethane sealant, rubber sealant, asphalt sealant, etc.

[0062] The sealant 80 can improve the connection stability between the reinforcing plate 40 and the cover 20 , and can also at least partially seal the gap between the reinforcing plate 40 and the cover, thereby reducing the possibility of foreign matter entering the battery box 100 .

[0063] Reference Figure 1 、 Figure 4 、 Figure 5 and Figure 6 In some embodiments, the cover 20 is provided with a first mounting hole 22 penetrating through the groove bottom of the groove 21, the bottom plate 41 is provided with a second mounting hole 411 corresponding to the first mounting hole 22, the partition beam 30 is provided with a third mounting hole 33 corresponding to the first mounting hole 22, and the first locking member 50 is arranged through the first mounting hole 22, the second mounting hole 411 and the third mounting hole 33 to lock the cover 20, the bottom plate 41 and the partition beam 30. In this way, the connection of the cover 20, the bottom plate 41 and the partition beam 30 is more convenient.

[0064] Referring to Figure 5 and Figure 8 In some embodiments, the battery box 100 further comprises a second locking member 70 arranged at at least one end of the reinforcing plate 40 along the first direction Y, and the second locking member 70 is fixedly connected to the bottom plate 41 and the cover 20. It can be understood that the second locking member 70 fixes the end of the bottom plate 41 and the cover 20.

[0065] The second locking member 70 fixedly connects the bottom plate 41 and the cover 20, so that the reinforcing plate 40 and the cover 20 are relatively fixed, and the reinforcing plate 40, the cover 20 and the partition beam 30 are matched conveniently. Especially in the embodiments in which the cover 20 is provided with the first mounting hole 22, the bottom plate 41 is provided with the second mounting hole 411, and the partition beam 30 is provided with the third mounting hole 33, the second mounting hole 411 and the first mounting hole 22 are matched (aligned), and the second mounting hole 411 and the third mounting hole 33 are matched (aligned), so that the first locking member 50 is arranged through the first mounting hole 22, the second mounting hole 411 and the third mounting hole 33.

[0066] Continuing to refer to Figure 8 In some embodiments, the second locking member 70 comprises a buckle 413 arranged at at least one end of the bottom plate 41 along the first direction Y, i.e. the buckle 413 is arranged at the end of the bottom plate 41 along the first direction Y, and the reinforcing plate 40 is clamped to the cover 20 through the buckle 413. It should be understood that the buckle 413 can be arranged at one end of the reinforcing plate 40 along the first direction Y, or buckles 413 can be arranged at both ends of the reinforcing plate 40 along the first direction Y.

[0067] In some embodiments, the buckle 413 is integrally formed with the bottom plate 41.

[0068] Referring to Figure 5 and Figure 8 In some embodiments, the second locking member 70 comprises a threaded member 71, a fourth mounting hole 412 can be arranged at at least one end of the bottom plate 41 along the first direction Y, the cover 20 is provided with a matching hole corresponding to the position of the fourth mounting hole 412, and the threaded member 71 is arranged through the fourth mounting hole 412 and the matching hole. The threaded member 71 includes but is not limited to a bolt, a screw, etc.

[0069] Reference Figure 8 In some embodiments, the buckle 413 and the screw 71 may coexist, and the fourth mounting hole 412 is located near the buckle 413. In this configuration, the reinforcing plate 40 is clamped to the cover 20, and the reinforcing plate 40 and the cover 20 are also connected by the screw 71, which greatly reduces the risk of the reinforcing plate 40 moving along the first direction Y and the second direction X.

[0070] In some embodiments, the partition beam 30 is an extruded profile, and has a cavity inside.

[0071] In some embodiments, reference Figure 4 、 Figure 6 and Figure 7 A receiving groove 34 is provided on the side of the partition beam 30 facing the cover body 20. The receiving groove 34 is set away from the center of the partition beam 30 along the second direction X. The receiving groove 34 extends along the first direction Y. The receiving groove 34 enables the partition beam 30 to share a part of the space with other components (such as the bar), thereby improving space utilization.

[0072] In some embodiments, the partition beam 30 includes a beam body 31 and a protrusion 32. The beam body 31 is connected to the bottom wall 12 of the box body 10. The protrusion 32 is disposed on a side of the beam body 31 near the cover 20. The third mounting hole 33 is disposed in the protrusion 32. Along the second direction X, the protrusion 32 is disposed near a corner of the beam body 31. The protrusion 32 and the beam body 31 together form a receiving groove 34. In this way, the receiving groove 34 is located at the other corner of the partition beam 30. The opening of the receiving groove 34 is relatively large, which facilitates the assembly of components that share space with the partition beam 30 into the receiving groove 34, making assembly of the components more convenient.

[0073] Reference Figure 4 and Figure 7 In some embodiments, the battery case 100 may further include a seal 60 disposed between the cover 20 and the partition beam 30, with at least a portion of the seal 60 surrounding the first locking member 50. The seal 60 can improve the sealing performance of the battery case 100 and reduce the risk of foreign matter entering the battery case 100 through the second mounting hole 411, the first mounting hole 22, and the third mounting hole 33.

[0074] In some embodiments, the sealing member 60 is a sealing foam.

[0075] Reference Figures 1 to 6 ,as well as Figure 8, the embodiment of the present application also provides a battery case 100, which includes a cover 20, a case body 10, a cover 20, a seal 60, a first locking member 50, a partition beam 30 and a reinforcing plate 40. The case body 10 includes a side beam 11 and a bottom wall 12, the side beam 11 is arranged around the bottom wall 12, the side beam 11 and the bottom wall 12 are enclosed to form a frame structure, and define an opening at the top of the frame structure (case body 10), and the cover 20 covers the opening. The partition beam 30 is arranged in the case body 10, the top of the partition beam 30 is connected to the cover 20, and the bottom of the partition beam 30 is connected to the bottom wall 12 of the case body 10. The cover 20 covers the opening, and a groove 21 is provided on the surface of the cover 20 facing away from the case body 10, the groove 21 extends along the first direction Y, and the width of the notch of the groove 21 is greater than the width of the groove bottom. The cross section of the groove is an inverted trapezoid. The reinforcing plate 40 is a steel plate. The reinforcing plate 40 is arranged in the groove 21 and does not extend beyond the outer surface of the cover body 20. The reinforcing plate 40 includes a bottom plate 41 and two side plates 42. The two side plates 42 have the same structure. The two side plates 42 are spaced apart along the second direction X, and the bottom plate 41 connects the two side plates 42. The distance between each side plate 42 and the adjacent groove side wall is between 5mm and 25mm. The angle formed between each side plate 42 and the bottom plate 41 is an obtuse angle. The cover body 20 is provided with a first mounting hole 22, which passes through the bottom of the groove 21. The bottom plate 41 is provided with a second mounting hole 411. The partition beam 30 is provided with a third mounting hole 33. The first locking member 50 is passed through the first mounting hole 22, the second mounting hole 411 and the third mounting hole 33 to connect the cover body 20, the reinforcing plate 40 and the partition beam 30. Along the first direction Y, both ends of the bottom plate 41 are provided with a snap 413, and the reinforcing plate 40 is also connected to the cover body 20 by the snap 413. A fourth mounting hole 412 is also provided on the bottom plate 41 near the snap 413, and the cover body 20 is provided with a matching hole corresponding to the fourth mounting hole 412. The screw member 71 is passed through the fourth mounting hole 412 and the matching hole to fix the reinforcing plate 40 and the cover body 20. The partition beam 30 is an extruded profile, and the partition beam 30 includes a beam body 31 and a protrusion 32. The beam body 31 is connected to the bottom wall 12 of the box body 10. The first protrusion 32 is provided on the side of the beam body 31 close to the cover body 20, and the third mounting hole 33 is provided on the protrusion 32. Along the second direction X, the protrusion 32 is provided near a corner of the beam body 31, and the protrusion 32 and the beam body 31 enclose to form a receiving groove 34. The sealing member 60 is arranged between the cover body 20 and the protrusion 32. At least a portion of the sealing member 60 is arranged around the first locking member 50. The first locking member 50 is a rivet fastener. The first locking member 50 includes a rivet nut and a locking bolt. The rivet nut is installed in the third mounting hole 33. The locking bolt is passed through the first mounting hole 22 and the second mounting hole 411 and is threadedly connected to the rivet nut.

[0076] The present application also provides a battery, wherein the battery pack 200 includes the battery case 100 of any of the above embodiments. Since the battery includes the battery case 100, the battery has the technical effects of the above battery case 100, which will not be described in detail here.

[0077] The present application also provides an electrical device comprising a battery according to any of the above-described embodiments. Because the battery in the electrical device comprises a battery housing 100, the electrical device exhibits the same technical benefits as the battery housing 100 described above, and further description thereof will not be given here. The electrical device includes, but is not limited to, electric vehicles, electric spacecraft, and electric ships.

[0078] The above is a detailed introduction to the embodiments of the present invention. Specific examples are used in this article to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method and core idea of ​​the present invention. At the same time, for those skilled in the art, based on the idea of ​​the present invention, there will be changes in the specific implementation methods and application scope. In summary, the contents of this specification should not be understood as limiting the present invention.

Claims

1. A battery box, characterized in that: include: a box body having an opening; a cover body, covering the opening, wherein a surface of the cover body facing away from the box body is provided with a groove, and the groove extends along a first direction; A partition beam is arranged in the box body; a reinforcing plate disposed in the groove and comprising a bottom plate and two side plates connected to the bottom plate, the two side plates being spaced apart along a second direction, the second direction being perpendicular to the first direction; a first locking member, fixedly connecting the reinforcing plate, the cover body and the partition beam; Wherein, along the second direction, at least one of the side plates is spaced apart from the groove sidewall of the groove.

2. The battery box according to claim 1, characterized in that: Along the second direction, the two side plates are spaced apart from the groove side walls of the groove.

3. The battery box according to claim 2, characterized in that: Along the second direction, the spacing distance between each side plate and the adjacent groove side wall is W, which satisfies: 5mm≤W≤25mm.

4. The battery box according to claim 2, characterized in that: The space between each side plate and the adjacent groove side wall is filled with sealant.

5. The battery case according to any one of claims 1 to 4, characterized in that: The battery box further includes: A second locking piece is provided at at least one end of the reinforcing plate along the first direction, and the second locking piece is fixedly connected to the bottom plate and the cover body.

6. The battery box according to claim 5, characterized in that: The second locking member includes a buckle, which is arranged on at least one end of the bottom plate along the first direction, and the reinforcing plate is connected to the cover body through the buckle.

7. The battery case according to any one of claims 1 to 4, characterized in that: A first angle is formed between one of the two side panels and the bottom panel, and a second angle is formed between the other of the two side panels and the bottom panel. Both the first angle and the second angle are obtuse angles.

8. The battery box according to claim 7, characterized in that: The first angle is equal to the second angle.

9. The battery case according to claim 8, characterized in that: The angle between each side plate and the bottom plate is α, which satisfies 90°<α≤150°.

10. The battery case according to any one of claims 1 to 4, characterized in that: The cover body is provided with a first mounting hole, the first mounting hole passes through the bottom of the groove, the base plate is provided with a second mounting hole corresponding to the first mounting hole, the partition beam is provided with a third mounting hole corresponding to the first mounting hole, and the first locking member is passed through the first mounting hole, the second mounting hole and the third mounting hole to lock the cover body, the base plate and the partition beam.

11. The battery case according to any one of claims 1 to 4, characterized in that: The opening is located at the top of the box body.

12. A battery, characterized in that: A battery case comprising the battery case according to any one of claims 1 to 11.

13. An electrical device, characterized in that: Including the battery according to claim 12.

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