Battery shell, battery pack and new energy automobile

Abstract

The embodiment of the utility model provides a battery case, a battery pack and a new energy automobile, and relates to the technical field of power batteries. The battery shell comprises a shell, a ring beam structure, a middle longitudinal beam and a middle cross beam, the ring beam structure comprises a front beam, a first edge beam, a rear beam and a second edge beam which are sequentially connected end to end, and the front beam, the first edge beam, the rear beam and the second edge beam are all arranged in the shell; the middle longitudinal beam is arranged on the shell and connected with the front beam and the rear beam at the same time. The middle cross beam is arranged on the shell and penetrates through the first edge beam, the middle longitudinal beam and the second edge beam at the same time, and the two ends of the middle cross beam are connected with the inner side wall of the shell correspondingly. The battery shell can improve the structural strength of the battery pack and the stability of the battery cells.

Description

Technical Field

[0001] The utility model relates to the technical field of power batteries, and in particular to a battery shell, a battery pack and a new energy vehicle. Background Art

[0002] With the development of the new energy vehicle industry, the battery pack as a power source is developing more and more rapidly, and the requirements for battery capacity of the battery pack are getting higher and higher, which requires the battery cell to have better stability during operation.

[0003] However, the battery case, which serves as a carrier of the battery cell, currently has the problem of low structural strength, which easily affects the stability of the battery cell. Utility Model Content

[0004] The purpose of the utility model is to provide a battery shell, a battery pack and a new energy vehicle, which can improve the structural strength of the battery pack and the stability of the battery core.

[0005] The embodiment of the utility model is achieved as follows:

[0006] In a first aspect, the utility model provides a battery case, comprising:

[0007] case;

[0008] A ring beam structure, the ring beam structure comprising a front beam, a first side beam, a rear beam and a second side beam connected end to end in sequence, the front beam, the first side beam, the rear beam and the second side beam are all arranged on the shell;

[0009] a middle longitudinal beam, the middle longitudinal beam being arranged on the shell and connected to the front beam and the rear beam at the same time; and

[0010] A middle cross beam, wherein the middle cross beam is arranged on the shell, and the middle cross beam passes through the first side beam, the middle longitudinal beam and the second side beam at the same time, and the two ends of the middle cross beam are respectively connected to the inner side wall of the shell.

[0011] In an optional embodiment, the first side beam, the middle longitudinal beam and the second side beam are respectively provided with a first notch, a second notch and a third notch, the middle cross beam is sequentially passed through the first notch, the second notch and the third notch, and the two ends of the middle cross beam respectively extend from the first notch and the third notch and are welded to the inner wall of the shell.

[0012] In an optional embodiment, the first side beam is provided with a first pressing dimple, and the first notch is provided in the first pressing dimple; the middle cross beam is provided with a second pressing dimple, and the second pressing dimple is passed through the second notch; the second side beam is provided with a third pressing dimple, and the third notch is provided in the third pressing dimple.

[0013] In an optional embodiment, a portion of the first side beam extends away from the second side beam to form a first protrusion, and the first protrusion is welded to the inner wall of the shell; a portion of the second side beam extends away from the first side beam to form a second protrusion, and the second protrusion is welded to the inner wall of the shell.

[0014] In an optional embodiment, the middle longitudinal beam has a first end and a second end, the first end is welded to the top and the side of the front beam at the same time, and the second end is welded to the top and the side of the rear beam at the same time.

[0015] In an optional embodiment, the battery shell further includes a front ear, a first side ear, a rear ear and a second side ear, and the front ear, the first side ear, the rear ear and the second side ear are sequentially arranged on the outer wall of the shell along the circumference of the shell; and the front ear corresponds to the front beam, the first side ear corresponds to the first side beam, the rear ear corresponds to the rear beam, and the second side ear corresponds to the second side beam.

[0016] In an optional embodiment, the front lifting ear includes a first steel sleeve, a second steel sleeve, a first front mounting plate, a second front mounting plate and a third front mounting plate, the first front mounting plate, the second front mounting plate and the third front mounting plate are sequentially connected and arranged along the height direction of the shell, and the first front mounting plate and the second front mounting plate are both welded to the outer wall of the shell; the first steel sleeve is passed through the first front mounting plate and connected to the second front mounting plate, the second steel sleeve is passed through the third front mounting plate and connected to the second front mounting plate, and the first steel sleeve and the second steel sleeve are coaxially arranged;

[0017] The rear lifting ear includes a third steel sleeve, a fourth steel sleeve, a first rear mounting plate, a second rear mounting plate and a third rear mounting plate. The first rear mounting plate, the second rear mounting plate and the third rear mounting plate are sequentially connected and arranged along the height direction of the shell. The first rear mounting plate and the second rear mounting plate are both welded to the outer wall of the shell; the third steel sleeve is passed through the first rear mounting plate and is connected to the second rear mounting plate, the fourth steel sleeve is passed through the third rear mounting plate and is connected to the second rear mounting plate, and the third steel sleeve and the fourth steel sleeve are coaxially arranged.

[0018] In an optional embodiment, the front lifting ear further includes a first reinforcing plate and a second reinforcing plate, the first reinforcing plate being arranged on a side of the first front mounting plate away from the second front mounting plate, and the first steel sleeve being passed through the first reinforcing plate; the second reinforcing plate being arranged on a side of the second front mounting plate close to the third front mounting plate, and the second steel sleeve being passed through the second reinforcing plate;

[0019] The rear lifting ear further includes a third reinforcing plate, the third reinforcing plate is arranged on a side of the first rear mounting plate away from the second rear mounting plate, and the third steel sleeve is passed through the third reinforcing plate.

[0020] In an optional embodiment, the first side lifting ear comprises a first side lifting ear body, a first sealing plate, a second sealing plate and a plurality of fifth steel sleeves, the first side lifting ear body is welded to the outer wall of the shell, the first sealing plate and the second sealing plate are respectively arranged at two ends of the first side lifting ear body, and the plurality of fifth steel sleeves are arranged at intervals on the first side lifting ear body;

[0021] The second side lifting ear includes a second side lifting ear body, a third sealing plate, a fourth sealing plate and a plurality of sixth steel sleeves. The second side lifting ear body is welded to the outer wall of the shell. The third sealing plate and the fourth sealing plate are respectively arranged at both ends of the second side lifting ear body. The plurality of sixth steel sleeves are arranged at intervals on the second side lifting ear body.

[0022] In an optional embodiment, the first side lifting ear further includes a fourth reinforcing plate, the fourth reinforcing plate is disposed in the cavity of the first side lifting ear body and is welded to the outer wall of the shell;

[0023] The second side lifting ear further includes a fifth reinforcing plate, which is disposed in the cavity of the second side lifting ear body and welded to the outer wall of the shell.

[0024] In an optional embodiment, the front beam includes a first front beam and a second front beam connected to each other, the first front beam is welded to the inner side wall and the bottom wall of the shell at the same time, the second front beam is welded to the bottom wall of the shell, and one end of the middle longitudinal beam is welded to the second front beam;

[0025] Wherein, a cavity structure is formed between the first front beam, the second front beam and the shell.

[0026] In a second aspect, the utility model provides a battery pack, comprising a battery cell and a battery shell as described in any one of the aforementioned embodiments, wherein the battery cell is arranged in the shell.

[0027] In a third aspect, the utility model provides a new energy vehicle, comprising the battery pack described in the aforementioned embodiment.

[0028] The beneficial effects of the embodiments of the utility model include:

[0029] The battery shell includes a shell, a ring beam structure, a middle longitudinal beam and a middle cross beam. The ring beam structure includes a front beam, a first side beam, a rear beam and a second side beam connected end to end in sequence. The front beam, the first side beam, the rear beam and the second side beam are all arranged on the shell; the middle longitudinal beam is arranged on the shell, and the middle longitudinal beam is connected to the front beam and the rear beam at the same time; the middle cross beam is arranged on the shell, and the middle cross beam passes through the first side beam, the middle longitudinal beam and the second side beam at the same time, and the two ends of the middle cross beam are respectively connected to the inner side wall of the shell. Through the criss-cross arrangement of the middle cross beam and the middle longitudinal beam, a frame structure with higher mechanical strength can be formed with the ring beam structure, and then the front beam, the first side beam, the rear beam and the second side beam are connected and fixed to the shell at the same time, and the middle cross beam passes through the first side beam and the second side beam and is connected and fixed to the shell again, so that the frame structure and the shell form a stable box structure, thereby improving the overall structural strength of the battery pack and improving the stability of the battery cell arranged in the battery shell.

[0030] The battery pack includes the battery case, and has all the beneficial effects of the battery case.

[0031] The new energy vehicle includes the battery pack and has all the beneficial effects of the battery pack. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0033] Figure 1 A schematic diagram of the structure of a new energy vehicle provided by an embodiment of the utility model;

[0034] Figure 2 A schematic diagram of the structure of a battery pack provided by an embodiment of the utility model;

[0035] Figure 3 A schematic diagram of the structure of a battery case provided by an embodiment of the utility model;

[0036] Figure 4 An exploded view of a battery case provided in an embodiment of the utility model;

[0037] Figure 5 An exploded view of the assembly relationship between the first side beam, the second side beam and the middle cross beam provided in an embodiment of the utility model;

[0038] Figure 6 A schematic diagram of the assembly of the front beam, the rear beam and the middle longitudinal beam provided in an embodiment of the utility model;

[0039] Figure 7 A schematic diagram of the structure of the front lifting ear provided in an embodiment of the utility model;

[0040] Figure 8 A schematic diagram of the structure of the rear lifting lug provided in an embodiment of the utility model;

[0041] Fig. 9 An exploded view of a first side lifting ear and a second side lifting ear provided in an embodiment of the utility model;

[0042] Fig.10 An exploded view of a front beam provided in an embodiment of the utility model;

[0043] Fig.11 An exploded view of a portion of the structure of a battery pack provided in an embodiment of the present utility model.

[0044] Icons: 1000-new energy vehicle; 1100-battery pack; 100-battery shell; 10-shell; 20-ring beam structure; 21-front beam; 211-first front beam; 212-second front beam; 22-first side beam; 221-first notch; 222-first depression; 223-first raised portion; 23-rear beam; 24-second side beam; 241-third notch; 242-third depression; 243-second raised portion; 30-middle longitudinal beam; 31-second notch; 32-first end; 33-second end; 40-middle cross beam; 41-second depression; 50-front lifting ear; 51-first steel sleeve; 52-second steel sleeve; 53-first front mounting plate; 54-second front Mounting plate; 55-third front mounting plate; 56-first reinforcement plate; 57-second reinforcement plate; 60-first side lifting ear; 61-first side lifting ear body; 62-first sealing plate; 63-second sealing plate; 64-fifth steel sleeve; 65-fourth reinforcement plate; 70-rear lifting ear; 71-third steel sleeve; 72-fourth steel sleeve; 73-first rear mounting plate; 74-second rear mounting plate; 75-third rear mounting plate; 76-third reinforcement plate; 80-second side lifting ear; 81-second side lifting ear body; 82-third sealing plate; 83-fourth sealing plate; 84-sixth steel sleeve; 85-fifth reinforcement plate; 90-mounting cavity; 200-upper cover; 300-pressing strip; 400-sealing gasket; 1200-vehicle body. DETAILED DESCRIPTION

[0045] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0046] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0047] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0048] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, or the orientation or position relationship in which the utility model product is usually placed when in use, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0049] In addition, the terms "horizontal", "vertical" and the like do not mean that the components are required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0050] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0051] As described in the background technology, with the development of the new energy vehicle industry, the development of battery packs as a power source is also rapid, and the requirements for battery pack battery capacity are getting higher and higher, which requires the battery cells to have better stability during operation. However, the battery shell, as the carrier of the battery cell, currently has the problem of low structural strength, which easily affects the stability of the battery cell.

[0052] Based on this, please refer to Figure 1-Figure 11 The embodiment of the utility model provides a battery case 100, a battery pack 1100 and a new energy vehicle 1000, which can effectively improve the above-mentioned technical problems, that is, it can improve the structural strength of the battery pack 1100 and the stability of the battery cell. The battery case 100, the battery pack 1100 and the new energy vehicle 1000 will be described in detail below.

[0053] Please refer to Figure 1 , Figure 1 The schematic diagram of the structure of the new energy vehicle 1000 provided in this embodiment is combined with Figure 1 The new energy vehicle 1000 includes a battery pack 1100 and a vehicle body 1200 . The battery pack 1100 is installed on the vehicle body 1200 , thereby providing electric energy for the vehicle body 1200 to realize various functions of the vehicle body 1200 .

[0054] Please refer to Figure 2 , Figure 2 The schematic diagram of the structure of the battery pack 1100 provided in this embodiment is shown in FIG. Figure 2 The battery pack 1100 includes a battery shell 100 and a battery cell (not shown), and the battery cell is arranged in the battery shell 100. For those skilled in the art, it is easy to know that the battery pack 1100 can also include a battery module, and the battery module is arranged in the battery shell 100, and the battery module can include multiple battery cells, thereby serving as a power source for new energy vehicles. It should be noted that the arrangement of the battery pack with or without a module needs to be determined according to the actual design requirements, which will not be elaborated here.

[0055] For further information, please refer to Figure 3 and Figure 4 , Figure 3 This is a schematic diagram of the structure of the battery case 100 provided in this embodiment. Figure 4 The exploded view of the battery case 100 provided in this embodiment, combined with Figure 3 and Figure 4The battery shell 100 includes a shell 10, a ring beam structure 20, a middle longitudinal beam 30 and a middle cross beam 40. The ring beam structure 20 includes a front beam 21, a first side beam 22, a rear beam 23 and a second side beam 24 connected end to end in sequence. The front beam 21, the first side beam 22, the rear beam 23 and the second side beam 24 are all arranged on the shell 10; the middle longitudinal beam 30 is arranged on the shell 10, and the middle longitudinal beam 30 is connected to the front beam 21 and the rear beam 23 at the same time; the middle cross beam 40 is arranged on the shell 10, and the middle cross beam 40 is simultaneously penetrated by the first side beam 22, the middle longitudinal beam 30 and the second side beam 24, and the two ends of the middle cross beam 40 are respectively connected to the inner side walls of the shell 10.

[0056] Through the criss-cross arrangement of the middle cross beam 40 and the middle longitudinal beam 30, a frame structure with higher mechanical strength can be formed with the ring beam structure 20, and then the front beam 21, the first side beam 22, the rear beam 23 and the second side beam 24 are simultaneously connected and fixed to the shell 10, and the middle cross beam 40 passes through the first side beam 22 and the second side beam 24 and is again connected and fixed to the shell 10, so that the frame structure and the shell 10 form a stable box structure, thereby improving the overall structural strength of the battery pack 1100 and enhancing the stability of the battery cells arranged in the battery shell 100.

[0057] like Figure 3 As shown, it should be noted that the middle cross beam 40 and the middle longitudinal beam 30 form a criss-cross frame structure with the ring beam structure 20, and then further form a plurality of installation cavities 90 with the shell 10. It is easy to understand that the installation cavity 90 can be used to install battery cells or battery modules, thereby reducing the number of parts and components and saving manufacturing costs.

[0058] Please refer to Figure 5 and Figure 6 , Figure 5 The exploded view of the assembly relationship between the first side beam 22, the second side beam 24 and the middle cross beam 40 provided in this embodiment is as follows: Figure 6 The schematic diagram of the assembly of the front beam 21, the rear beam 23 and the middle longitudinal beam 30 provided in this embodiment, combined with Figure 4-Figure 6 Specifically, the first side beam 22, the middle longitudinal beam 30 and the second side beam 24 are respectively provided with a first notch 221, a second notch 31 and a third notch 241, the middle cross beam 40 is sequentially penetrated through the first notch 221, the second notch 31 and the third notch 241, and the two ends of the middle cross beam 40 extend out from the first notch 221 and the third notch 241 respectively, and are welded to the inner wall of the shell 10; that is, the two ends of the middle cross beam 40 are respectively welded to the inner wall located on both sides of the shell 10, thereby improving the structural strength.

[0059] In the actual welding process, in order to prevent the formed weld from interfering with other parts, in this embodiment, the first side beam 22 is provided with a first pressing dimple 222, and the first notch 221 is provided in the first pressing dimple 222; the middle cross beam 40 is provided with a second pressing dimple 41, and the second pressing dimple 41 is provided in the second notch 31; the second side beam 24 is provided with a third pressing dimple 242, and the third notch 241 is provided in the third pressing dimple 242. Figure 5 As shown, the depression portion is a recessed structure. After the middle cross beam 40 passes through the first notch 221 and the third notch 241, it can be welded on the first depression portion 222 and the third depression portion 242 respectively. At the same time, the middle longitudinal beam 30 can also be welded at the second depression portion 41; that is, the depression portion can provide a welding avoidance space for two components that need to be welded, thereby avoiding the interference of the welded structure with other components, and can also save the layout space of the battery shell 100, further save costs, and improve the overall structural stability of the battery pack 1100.

[0060] Please continue to combine Figure 5 In order to improve the connection stability between the side beam and the shell 10, a part of the first side beam 22 extends in a direction away from the second side beam 24 to form a first protrusion 223, and the first protrusion 223 is welded to the inner wall of the shell 10; a part of the second side beam 24 extends in a direction away from the first side beam 22 to form a second protrusion 243, and the second protrusion 243 is welded to the inner wall of the shell 10. By arranging such a concave structure in the layout of the first side beam 22 and the second side beam 24, the welding area with the inner wall of the shell 10 can be increased, thereby further improving the structural strength of the battery shell 100.

[0061] It should be noted that the number of the first protrusion 223 and the number of the second protrusion 243 can be multiple, so as to achieve welding with the housing 10 at multiple points, thereby improving the overall rigidity.

[0062] Please continue to combine Figure 6 In order to improve the connection stability between the middle longitudinal beam 30 and the front beam 21 and the rear beam 23, the middle longitudinal beam 30 has a first end 32 and a second end 33. The first end 32 is welded to the top and side of the front beam 21, and the second end 33 is welded to the top and side of the rear beam 23. Figure 6 As shown, the first end portion 32 and the second end portion 33 are respectively crimped to the front beam 21 and the rear beam 23 , which can increase the contact area and welding area with the front beam 21 and the rear beam 23 , thereby further improving the overall rigidity.

[0063] In order to facilitate the lifting and transportation of the battery shell 100 or the installation and connection with other structures, please continue to combine Figure 3 and Figure 4The battery shell 100 also includes a front ear 50, a first side ear 60, a rear ear 70 and a second side ear 80, which are sequentially arranged on the outer wall of the shell 10 along the circumference of the shell 10; and the front ear 50 corresponds to the front beam 21, the first side ear 60 corresponds to the first side beam 22, the rear ear 70 corresponds to the rear beam 23, and the second side ear 80 corresponds to the second side beam 24.

[0064] Specifically, please refer to Figure 7 and Figure 8 , Figure 7 This is a schematic diagram of the structure of the front lifting ear 50 provided in this embodiment. Figure 8 The schematic diagram of the structure of the rear lifting ear 70 provided in this embodiment, combined with Figure 7 and Figure 8 The front lifting ear 50 includes a first steel sleeve 51, a second steel sleeve 52, a first front mounting plate 53, a second front mounting plate 54 and a third front mounting plate 55. The first front mounting plate 53, the second front mounting plate 54 and the third front mounting plate 55 are sequentially connected and arranged along the height direction of the shell 10. The first front mounting plate 53 and the second front mounting plate 54 are both welded to the outer wall of the shell 10; the first steel sleeve 51 is penetrated through the first front mounting plate 53 and connected to the second front mounting plate 54, the second steel sleeve 52 is penetrated through the third front mounting plate 55 and connected to the second front mounting plate 54, and the first steel sleeve 51 and the second steel sleeve 52 are coaxially arranged.

[0065] The rear lifting ear 70 includes a third steel sleeve 71, a fourth steel sleeve 72, a first rear mounting plate 73, a second rear mounting plate 74 and a third rear mounting plate 75. The first rear mounting plate 73, the second rear mounting plate 74 and the third rear mounting plate 75 are sequentially connected and arranged along the height direction of the shell 10. The first rear mounting plate 73 and the second rear mounting plate 74 are both welded to the outer wall of the shell 10; the third steel sleeve 71 is penetrated through the first rear mounting plate 73 and is connected to the second rear mounting plate 74, the fourth steel sleeve 72 is penetrated through the third rear mounting plate 75 and is connected to the second rear mounting plate 74, and the third steel sleeve 71 and the fourth steel sleeve 72 are coaxially arranged.

[0066] It should be noted that the front lifting lug 50 and the rear lifting lug 70 adopt the configuration of double steel sleeves and multi-layer mounting plates, which can improve the structural strength of the lifting lugs, thereby improving the stability of the connection between the lifting lugs and other component structures.

[0067] In order to improve the connection stability between the front hanging ear 50 and the rear hanging ear 70 and the shell 10, the second front mounting plate 54 extends toward the second rear mounting plate 74 to form a first extension portion, the first extension portion is welded to the outer bottom wall of the shell 10, and the first front mounting plate 53 is welded to the outer side wall of the shell 10; similarly, the second rear mounting plate 74 extends toward the second front mounting plate 54 to form a second extension portion, the second extension portion is welded to the outer bottom wall of the shell 10, and the first rear mounting plate 73 is welded to the outer side wall of the shell 10.

[0068] Furthermore, in order to ensure the stable installation of the steel sleeve, the front lifting ear 50 further includes a first reinforcing plate 56 and a second reinforcing plate 57. The first reinforcing plate 56 is disposed on a side of the first front mounting plate 53 away from the second front mounting plate 54, and the first steel sleeve 51 is penetrated through the first reinforcing plate 56; the second reinforcing plate 57 is disposed on a side of the second front mounting plate 54 close to the third front mounting plate 55, and the second steel sleeve 52 is penetrated through the second reinforcing plate 57. Similarly, the rear lifting ear 70 further includes a third reinforcing plate 76. The third reinforcing plate 76 is disposed on a side of the first rear mounting plate 73 away from the second rear mounting plate 74, and the third steel sleeve 71 is penetrated through the third reinforcing plate 76.

[0069] Please refer to Fig. 9 , Fig. 9 The exploded view of the first side lifting ear 60 and the second side lifting ear 80 provided in this embodiment, combined with Fig. 9 The first side lifting ear 60 includes a first side lifting ear body 61, a first sealing plate 62, a second sealing plate 63 and a plurality of fifth steel sleeves 64. The first side lifting ear body 61 is welded to the outer wall of the shell 10. The first sealing plate 62 and the second sealing plate 63 are respectively arranged at the two ends of the first side lifting ear body 61, and the plurality of fifth steel sleeves 64 are arranged at intervals on the first side lifting ear body 61; the second side lifting ear 80 includes a second side lifting ear body 81, a third sealing plate 82, a fourth sealing plate 83 and a plurality of sixth steel sleeves 84. The second side lifting ear body 81 is welded to the outer wall of the shell 10. The third sealing plate 82 and the fourth sealing plate 83 are respectively arranged at the two ends of the second side lifting ear body 81, and the plurality of sixth steel sleeves 84 are arranged at intervals on the second side lifting ear body 81.

[0070] It should be noted that, in the present embodiment, the first side ear body 61 and the second side ear body 81 are both formed by integral stamping and bent to form a cavity structure, and the two ends of the cavity of the first side ear body 61 are closed by the first sealing plate 62 and the second sealing plate 63, and the two ends of the cavity of the second side ear body 81 are closed by the third sealing plate 82 and the fourth sealing plate 83, and then the cavity structure is welded to the outer wall of the shell 10, so as to improve the overall rigidity; at the same time, by setting a plurality of fifth steel sleeves 64 and a plurality of sixth steel sleeves 84, it is also possible to increase the connection points between the first side ear 60, the second side ear 80 and other components.

[0071] In order to further improve the connection stability of the first side ear body 61 and the second side ear body 81, in the present embodiment, the first side ear 60 also includes a fourth reinforcing plate 65, which is disposed in the cavity of the first side ear body 61 and welded to the outer wall of the shell 10; the second side ear 80 also includes a fifth reinforcing plate 85, which is disposed in the cavity of the second side ear body 81 and welded to the outer wall of the shell 10.

[0072] Please refer to Fig.10 , Fig.10 The exploded view of the front beam 21 provided in this embodiment, combined with Figure 4 and Fig.10 Specifically, the front beam 21 includes a first front beam 211 and a second front beam 212 connected to each other, the first front beam 211 is welded to the inner wall and the bottom wall of the shell 10 at the same time, the second front beam 212 is welded to the bottom wall of the shell 10, and one end of the middle longitudinal beam 30 is welded to the second front beam 212; wherein a cavity structure is formed between the first front beam 211, the second front beam 212 and the shell 10.

[0073] like Fig.10 As shown, the first front beam 211 is formed into a multi-section bending portion by stamping and bending, so that a part of the first front beam 211 is welded to the inner wall of the shell 10, and the other part is welded to the bottom of the shell; at the same time, the second front beam 212 is also formed into a multi-section bending portion by stamping and bending, so that a part of the second front beam 212 is welded to the first front beam 211, and the other part is welded to the bottom wall of the shell 10, and a cavity structure is also formed between the first front beam 211, the second front beam 212 and the shell 10, thereby further increasing the overall structural strength and further improving the structural stability of the battery shell 100.

[0074] Please continue to combine Figure 2 The battery pack 1100 further includes an upper cover 200 , which is connected to the shell 10 and can be used to protect components such as battery modules or battery cells disposed in the shell 10 .

[0075] Specifically, please refer to Fig.11 , Fig.11 The partial structure explosion diagram of the battery pack 1100 provided in this embodiment, combined with Fig.11 In order to improve the sealing performance of the battery pack 1100, the battery pack 1100 also includes a sealing gasket 400, which is disposed between the upper cover 200 and the shell 10; it is easy to understand that bolt holes can be provided on the upper cover 200, the sealing gasket 400 and the shell 10, and the connection stability between the upper cover 200, the sealing gasket 400 and the shell 10 can be further improved by bolt connection.

[0076] Furthermore, in order to increase the strength of the sealing surface of the upper cover 200 and prevent the sealing bolt from being recessed, in this embodiment, the battery pack 1100 also includes a pressure strip 300, which is arranged on the periphery of the upper cover 200 and is located on the side of the upper cover 200 away from the sealing gasket 400.

[0077] In summary, an embodiment of the utility model provides a battery shell 100, a battery pack 1100 and a new energy vehicle 1000, the battery shell 100 includes a shell 10, a ring beam structure 20, a middle longitudinal beam 30 and a middle cross beam 40, the ring beam structure 20 includes a front beam 21, a first side beam 22, a rear beam 23 and a second side beam 24 connected end to end in sequence, the front beam 21, the first side beam 22, the rear beam 23 and the second side beam 24 are all arranged on the shell 10; the middle longitudinal beam 30 is arranged on the shell 10, and the middle longitudinal beam 30 is connected to the front beam 21 and the rear beam 23 at the same time; the middle cross beam 40 is arranged on the shell 10, the middle cross beam 40 is simultaneously penetrated by the first side beam 22, the middle longitudinal beam 30 and the second side beam 24, and the two ends of the middle cross beam 40 are respectively connected to the inner wall of the shell 10.

[0078] That is to say, through the criss-cross arrangement of the middle cross beam 40 and the middle longitudinal beam 30, a frame structure with higher mechanical strength can be formed with the ring beam structure 20, and then the front beam 21, the first side beam 22, the rear beam 23 and the second side beam 24 are simultaneously connected and fixed to the shell 10, and the middle cross beam 40 passes through the first side beam 22 and the second side beam 24 to be connected and fixed to the shell 10 again, so that the frame structure and the shell 10 form a stable box structure, thereby improving the overall structural strength of the battery pack 1100 and enhancing the stability of the battery cells arranged in the battery shell 100.

[0079] The battery pack 1100 includes the battery case 100 , and has all the functions and beneficial effects of the battery case 100 .

[0080] The new energy vehicle 1000 includes the battery pack 1100 , which has all the functions and beneficial effects of the battery pack 1100 .

[0081] The above description is only a specific embodiment of the utility model and is not intended to limit the utility model. For those skilled in the art, the utility model may have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A battery shell, characterized in that: include: Housing (10); A ring beam structure (20), the ring beam structure (20) comprising a front beam (21), a first side beam (22), a rear beam (23) and a second side beam (24) connected end to end in sequence, the front beam (21), the first side beam (22), the rear beam (23) and the second side beam (24) being all arranged on the shell (10); a middle longitudinal beam (30), the middle longitudinal beam (30) being arranged on the shell (10), and the middle longitudinal beam (30) being connected to the front beam (21) and the rear beam (23) at the same time; and A middle cross beam (40), wherein the middle cross beam (40) is arranged on the shell (10), and the middle cross beam (40) is simultaneously passed through the first side beam (22), the middle longitudinal beam (30) and the second side beam (24), and the two ends of the middle cross beam (40) are respectively connected to the inner side wall of the shell (10).

2. The battery case according to claim 1, characterized in that: The first side beam (22), the middle longitudinal beam (30) and the second side beam (24) are respectively provided with a first notch (221), a second notch (31) and a third notch (241); the middle cross beam (40) is sequentially inserted into the first notch (221), the second notch (31) and the third notch (241); and two ends of the middle cross beam (40) respectively extend out from the first notch (221) and the third notch (241) and are welded to the inner wall of the shell (10).

3. The battery case according to claim 2, characterized in that: The first side beam (22) is provided with a first pressing dimple (222), and the first notch (221) is provided in the first pressing dimple (222); the middle cross beam (40) is provided with a second pressing dimple (41), and the second pressing dimple (41) is passed through the second notch (31); the second side beam (24) is provided with a third pressing dimple (242), and the third notch (241) is provided in the third pressing dimple (242).

4. The battery case according to claim 1, characterized in that: A portion of the first side beam (22) extends in a direction away from the second side beam (24) to form a first protrusion (223), and the first protrusion (223) is welded to the inner wall of the shell (10); a portion of the second side beam (24) extends in a direction away from the first side beam (22) to form a second protrusion (243), and the second protrusion (243) is welded to the inner wall of the shell (10).

5. The battery case according to claim 1, characterized in that: The middle longitudinal beam (30) has a first end (32) and a second end (33), the first end (32) being welded to the top and the side of the front beam (21) at the same time, and the second end (33) being welded to the top and the side of the rear beam (23) at the same time.

6. The battery case according to claim 1, characterized in that: The battery shell (100) further includes a front lifting ear (50), a first side lifting ear (60), a rear lifting ear (70) and a second side lifting ear (80), wherein the front lifting ear (50), the first side lifting ear (60), the rear lifting ear (70) and the second side lifting ear (80) are sequentially arranged on the outer wall of the shell (10) along the circumference of the shell (10); and the front lifting ear (50) corresponds to the front beam (21), the first side lifting ear (60) corresponds to the first side beam (22), the rear lifting ear (70) corresponds to the rear beam (23), and the second side lifting ear (80) corresponds to the second side beam (24).

7. The battery case according to claim 6, characterized in that: The front lifting ear (50) comprises a first steel sleeve (51), a second steel sleeve (52), a first front mounting plate (53), a second front mounting plate (54) and a third front mounting plate (55); the first front mounting plate (53), the second front mounting plate (54) and the third front mounting plate (55) are sequentially connected and arranged along the height direction of the shell (10); the first front mounting plate (53) and the second front mounting plate (54) are both welded to the outer wall of the shell (10); the first steel sleeve (51) is passed through the first front mounting plate (53) and is connected to the second front mounting plate (54); the second steel sleeve (52) is passed through the third front mounting plate (55) and is connected to the second front mounting plate (54); and the first steel sleeve (51) and the second steel sleeve (52) are coaxially arranged; The rear lifting ear (70) comprises a third steel sleeve (71), a fourth steel sleeve (72), a first rear mounting plate (73), a second rear mounting plate (74) and a third rear mounting plate (75); the first rear mounting plate (73), the second rear mounting plate (74) and the third rear mounting plate (75) are sequentially connected and arranged along the height direction of the shell (10); the first rear mounting plate (73) and the second rear mounting plate (74) are both welded to the outer wall of the shell (10); the third steel sleeve (71) is passed through the first rear mounting plate (73) and is connected to the second rear mounting plate (74); the fourth steel sleeve (72) is passed through the third rear mounting plate (75) and is connected to the second rear mounting plate (74); and the third steel sleeve (71) and the fourth steel sleeve (72) are coaxially arranged.

8. The battery case according to claim 7, characterized in that: The front lifting ear (50) further comprises a first reinforcing plate (56) and a second reinforcing plate (57), wherein the first reinforcing plate (56) is arranged on a side of the first front mounting plate (53) away from the second front mounting plate (54), and the first steel sleeve (51) is passed through the first reinforcing plate (56); the second reinforcing plate (57) is arranged on a side of the second front mounting plate (54) close to the third front mounting plate (55), and the second steel sleeve (52) is passed through the second reinforcing plate (57); The rear lifting ear (70) further comprises a third reinforcing plate (76), wherein the third reinforcing plate (76) is arranged on a side of the first rear mounting plate (73) away from the second rear mounting plate (74), and the third steel sleeve (71) is passed through the third reinforcing plate (76).

9. The battery case according to claim 6, characterized in that: The first side lifting ear (60) comprises a first side lifting ear body (61), a first sealing plate (62), a second sealing plate (63) and a plurality of fifth steel sleeves (64); the first side lifting ear body (61) is welded to the outer wall of the shell (10); the first sealing plate (62) and the second sealing plate (63) are respectively arranged at two ends of the first side lifting ear body (61); and the plurality of fifth steel sleeves (64) are arranged at intervals on the first side lifting ear body (61); The second side lifting ear (80) includes a second side lifting ear body (81), a third sealing plate (82), a fourth sealing plate (83) and a plurality of sixth steel sleeves (84); the second side lifting ear body (81) is welded to the outer wall of the shell (10); the third sealing plate (82) and the fourth sealing plate (83) are respectively arranged at two ends of the second side lifting ear body (81); and the plurality of sixth steel sleeves (84) are arranged at intervals on the second side lifting ear body (81).

10. The battery case according to claim 9, characterized in that: The first side lifting ear (60) further comprises a fourth reinforcing plate (65), wherein the fourth reinforcing plate (65) is disposed in the cavity of the first side lifting ear body (61) and is welded to the outer wall of the shell (10); The second side lifting ear (80) further comprises a fifth reinforcing plate (85), wherein the fifth reinforcing plate (85) is disposed in the cavity of the second side lifting ear body (81) and is welded to the outer wall of the shell (10).

11. The battery case according to claim 1, characterized in that: The front beam (21) comprises a first front beam (211) and a second front beam (212) connected to each other, the first front beam (211) being welded to the inner side wall and the bottom wall of the shell (10) at the same time, the second front beam (212) being welded to the bottom wall of the shell (10), and one end of the middle longitudinal beam (30) being welded to the second front beam (212); Wherein, a cavity structure is formed between the first front beam (211), the second front beam (212) and the shell (10).

12. A battery pack, characterized in that: It comprises a battery cell and a battery shell (100) according to any one of claims 1 to 11, wherein the battery cell is arranged in the shell (10).

13. A new energy vehicle, characterized in that: Includes the battery pack (1100) as claimed in claim 12.

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