Battery shell, battery pack and vehicle
By using an integrated front and rear beam tube structure, the problems of high cost and complex welding of the aluminum alloy welded main frame are solved, achieving high strength and low cost manufacturing of the battery casing and improving the collision protection capability of the battery casing.
Patent Information
- Application Number
- CN202520053208.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-09
- Publication Date
- 2026-01-16
- Estimated Expiration
- 2035-01-09
AI Technical Summary
In existing technologies, the main frame made of aluminum alloy by welding has problems such as high cost and complex welding operation.
The front and rear beam tubes are made of one piece. The front beam tube includes a first longitudinal beam, a front beam and a second longitudinal beam that are connected in one piece. One end of the rear beam tube is connected to the first longitudinal beam and the other end is connected to the second longitudinal beam. All of them are made of high-strength steel, which reduces the need for welding.
It improves the strength and rigidity of the battery casing, reduces manufacturing costs and welding difficulty, and provides effective protection in the event of a collision, thus enhancing the safety of individual battery cells.
Smart Images
Figure CN223809196U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to battery technical field, especially be related to battery shell, battery package and vehicle. BACKGROUND
[0002] The battery package generally includes a battery shell and a battery monomer installed in the battery shell, and the main frame is a main component of the battery shell and can protect the battery monomer inside the battery shell; when the battery package is impacted from outside, the main frame can resist impact, stamping and other damages, thereby avoiding leakage, explosion and other accidents of the battery monomer.
[0003] In the prior art, the main frame is usually made of aluminum alloy by welding, and the main frame made of aluminum alloy by welding has the technical problems of high cost and complex welding operation. SUMMARY
[0004] The utility model discloses to the main frame made of aluminum alloy by welding in the prior art has the technical problems of high cost and complex welding operation, and provides a battery shell, battery package and vehicle.
[0005] To solve the above problems, the utility model discloses an embodiment provides a kind of battery shell, the front beam pipe includes first side plate, second side plate, third side plate and fourth side plate;In the cross section perpendicular to the extension direction of the front beam pipe, the first side plate, the second side plate, the third side plate and the fourth side plate are sequentially connected and enclose first inner cavity;
[0006] The front beam pipe includes integrally formed first longitudinal beam, front beam and second longitudinal beam, and in the extension direction of the front beam pipe, the first longitudinal beam, the front beam and the second longitudinal beam are sequentially connected.
[0007] One end of the rear beam pipe is connected to the end of the first longitudinal beam away from the front beam, and the other end of the rear beam pipe is connected to the end of the second longitudinal beam away from the front beam;The rear beam pipe, the first longitudinal beam, the front beam and the second longitudinal beam enclose a receiving space for installing a monomer battery.
[0008] Optionally, the front beam pipe further includes a first inclined beam and a second inclined beam;One end of the first inclined beam is connected to the first longitudinal beam, and the other end of the first inclined beam is connected to the first end of the front beam;One end of the second inclined beam is connected to the second longitudinal beam, and the other end of the second inclined beam is connected to the second end of the front beam;In the extension direction of the front beam pipe,
[0009] The first longitudinal beam, the first inclined beam, the front beam, the second inclined beam and the second longitudinal beam are integrally formed.
[0010] Optionally, the front beam pipe further comprises a first arc-shaped connecting segment, a second arc-shaped connecting segment, a third arc-shaped connecting segment and a fourth arc-shaped connecting segment; the first arc-shaped connecting segment is connected between the first longitudinal beam and the first inclined beam, the second arc-shaped connecting segment is connected between the first inclined beam and the front beam, the third arc-shaped connecting segment is connected between the front beam and the second inclined beam, and the fourth arc-shaped connecting segment is connected between the second inclined beam and the second longitudinal beam.
[0011] In the extension direction of the front beam pipe, the first longitudinal beam, the first arc-shaped connecting segment, the first inclined beam, the second arc-shaped connecting segment, the front beam, the third arc-shaped connecting segment, the second inclined beam, the fourth arc-shaped connecting segment and the second longitudinal beam are integrally formed.
[0012] Optionally, the battery shell further comprises a first cross beam arranged in the accommodating space; opposite ends of the first cross beam are connected between the first arc-shaped connecting segment and the fourth arc-shaped connecting segment; the first cross beam, the front beam and the rear beam pipe are arranged in parallel.
[0013] Optionally, the first cross beam comprises a first cross plate and first and second vertical plates connected to opposite sides of the first cross plate, and a first recess is formed between the first vertical plate, the first cross plate and the second vertical plate.
[0014] Optionally, the battery shell further comprises a second cross beam arranged in the accommodating space; opposite ends of the second cross beam are connected to the first longitudinal beam and the second longitudinal beam, respectively; the second cross beam, the front beam and the rear beam pipe are arranged in parallel.
[0015] Optionally, the second cross beam comprises a second cross plate and third and fourth vertical plates connected to opposite sides of the second cross plate, and a second recess is formed between the third vertical plate, the second cross plate and the fourth vertical plate.
[0016] Optionally, the battery shell further comprises a plurality of first lug pipes spaced apart and connected to a side of the first longitudinal beam away from the second longitudinal beam, and a plurality of second lug pipes spaced apart and connected to a side of the second longitudinal beam away from the first longitudinal beam.
[0017] The first lug pipe comprises a first pipe body and a second pipe body integrally formed, a first lug hole is arranged on the first pipe body, and an end of the second pipe body away from the first pipe body is connected to the first longitudinal beam.
[0018] The second lug pipe comprises a third pipe body and a fourth pipe body integrally formed, a second lug hole is arranged on the third pipe body, and an end of the fourth pipe body away from the third pipe body is connected to the second longitudinal beam.
[0019] Optionally, in a cross section perpendicular to the rear beam pipe, the length of the first pipe body is less than the length of the second pipe body, and the width of the first pipe body is greater than the width of the second pipe body; in a cross section perpendicular to the rear beam pipe, the length of the third pipe body is less than the length of the fourth pipe body, and the width of the third pipe body is greater than the width of the fourth pipe body.
[0020] The utility model discloses another embodiment still provides a battery pack, including battery monomer and above-mentioned battery case, battery monomer installs in accommodating space.
[0021] The utility model discloses still another embodiment provides a vehicle, including above-mentioned battery pack.
[0022] In the utility model, the front beam pipe is bent to form the first longitudinal beam, the front beam and the second longitudinal beam connected in sequence, one end of the rear beam pipe is connected with the first longitudinal beam away from the front beam, and the other end of the rear beam pipe is connected with the second longitudinal beam away from the front beam.
[0023] In addition, the first inner cavity is arranged on the front beam pipe, and the second inner cavity is arranged on the rear beam pipe, when the battery case collides, the front beam pipe and the rear beam pipe can all play the role of energy absorption in collapse, further guaranteeing the protection of the battery case to the battery monomer. BRIEF DESCRIPTION OF DRAWINGS
[0024] The utility model is further illustrated below in combination with the drawings and examples.
[0025] Figure 1 The utility model provides the front beam pipe of battery case for an embodiment of the utility model, and the cross section of the front beam pipe is as shown in the figure.
[0026] Figure 2 The utility model provides the first crossbeam of battery case for an embodiment of the utility model, and the cross section of the first crossbeam is as shown in the figure. Figure 1 The utility model provides the first crossbeam of battery case for an embodiment of the utility model, and the cross section of the first crossbeam is as shown in the figure.
[0027] Figure 3 The utility model provides the front beam pipe of battery case for an embodiment of the utility model, and the cross section of the front beam pipe is as shown in the figure.
[0028] Figure 4 The utility model provides the first crossbeam of battery case for an embodiment of the utility model, and the cross section of the first crossbeam is as shown in the figure.
[0029] Figure 5 The utility model provides an embodiment provides the side view of the first lifting lug of battery case.
[0030] The reference signs in the description are as follows:
[0031] 1, front beam pipe;101, first inner cavity;102, first side plate, 103, second side plate;104, third side plate;105, fourth side plate;11, first longitudinal beam;12, front beam;13, second longitudinal beam;14, first inclined beam;15, second inclined beam;16, first arc-shaped connecting section;17, second arc-shaped connecting section;18, third arc-shaped connecting section;19, fourth arc-shaped connecting section;2, rear beam pipe;3, accommodating space;4, first cross beam;41, first cross plate;42, first vertical plate;43, second vertical plate;44, first recess;5, second cross beam;6, first lifting lug pipe;61, first pipe body;62, second pipe body;7, second lifting lug pipe. Specific embodiments
[0032] In order to make the technical problems, technical schemes and beneficial effects solved by the utility model clearer and more apparent, the utility model will be further described in detail below in combination with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the utility model and not to limit the utility model.
[0033] It should be understood that the terms "upper", "lower", "left", "right", "front", "rear", "middle" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the utility model.
[0034] As Figure 1 and Figure 3 The utility model embodiment provides a kind of battery case, including front beam pipe 1 and rear beam pipe 2, the front beam pipe 1 includes first side plate 102, second side plate 103, third side plate 104 and fourth side plate 105;In the cross section perpendicular to the extension direction of the front beam pipe 1, the first side plate 102, the second side plate 103, the third side plate 104 and the fourth side plate 105 are sequentially connected and enclose first inner cavity 101;As preferred, second inner cavity is equipped on the rear beam pipe 2;It can be understood that the cross section of the front beam pipe 1 can be enclosed by the square frame structure of four side plates, the shape of the first inner cavity 101 and the second inner cavity can be square, rectangle, trapezoidal etc.;The front beam pipe 1 and the rear beam pipe 2 can all be square tube structure.
[0035] The front beam pipe 1 comprises a first longitudinal beam 11, a front beam 12 and a second longitudinal beam 13 which are sequentially connected and integrally formed in the extension direction of the front beam pipe 1; one end of the rear beam pipe 2 is connected to the end of the first longitudinal beam 11 away from the front beam 12, and the other end of the rear beam pipe 2 is connected to the end of the second longitudinal beam 13 away from the front beam 12; the rear beam pipe 2, the first longitudinal beam 11, the front beam 12 and the second longitudinal beam 13 form a containing space 3 for mounting a single battery. It can be understood that the first longitudinal beam 11, the front beam 12 and the second longitudinal beam 13 are all provided with the first inner cavity 101, the first longitudinal beam 11 and the second longitudinal beam 13 are parallel, the front beam 12 and the rear beam are parallel, and the front beam 12 and the first longitudinal beam 11 are perpendicular; the opposite ends of the rear beam pipe 2 are welded on the first longitudinal beam 11 and the second longitudinal beam 13 respectively. Further, the first longitudinal beam 11, the front beam 12 and the second longitudinal beam are all composed of the first side plate 102, the second side plate 103, the third side plate 104 and the fourth side plate 105.
[0036] In a specific embodiment, the manufacturing steps of the front beam pipe 1 are as follows: an ultra-high strength and high toughness galvanized steel plate with a tensile strength of 780-1200 MPa is used, the galvanized steel plate is rolled into a square tube, and then laser welding is performed to form the front beam pipe 1.
[0037] In the utility model, the front beam pipe 1 comprises a first longitudinal beam 11, a front beam 12 and a second longitudinal beam 13 which are sequentially connected and integrally formed; one end of the rear beam pipe 2 is connected to the end of the first longitudinal beam 11 away from the front beam 12, and the other end of the rear beam pipe 2 is connected to the end of the second longitudinal beam 13 away from the front beam 12. Since the connection strength and rigidity of the joint of the two pipes are reduced, compared with the front beam pipe formed by splicing multiple pipes, the integrally formed front beam pipe 1 in the application avoids the technical problem of low connection strength and rigidity between the adjacent two pipes, so that the integrally formed front beam pipe 1 in the application makes the battery case have greater strength and rigidity, and the battery case has a better protection effect on the single battery in the containing space 3.
[0038] In addition, the front beam pipe 1 is provided with a first inner cavity 101, and the rear beam pipe 2 is provided with a second inner cavity; when the battery case collides, the front beam pipe 1 and the rear beam pipe 2 can both play a role in energy absorption, further ensuring the protection effect of the battery case on the single battery. In addition, the front beam pipe 1 and the rear beam pipe 2 can both be formed by bending high-strength steel, which reduces the welding difficulty and manufacturing cost of the battery case, and further improves the strength and rigidity of the battery case.
[0039] In an embodiment, as shown in Figure 1As shown, the front beam pipe 1 further comprises a first inclined beam 14 and a second inclined beam 15; one end of the first inclined beam 14 is connected to the first longitudinal beam 11, and the other end of the first inclined beam 14 is connected to the first end of the front beam 12; one end of the second inclined beam 15 is connected to the second longitudinal beam 13, and the other end of the second inclined beam 15 is connected to the second end of the front beam 12; in the extension direction of the front beam pipe 1, the first longitudinal beam 11, the first inclined beam 14, the front beam 12, the second inclined beam 15 and the second longitudinal beam 13 are integrally formed. Understandably, the first inclined beam 14 and the second inclined beam 15 are also composed of the first side plate 102, the second side plate 103, the third side plate 104 and the fourth side plate 105; the first end and the second end are respectively opposite ends of the front beam 12; the first inclined beam 14 and the second inclined beam 15 are symmetrically arranged, and the first inner cavity 101 is arranged on the first inclined beam 14 and the second inclined beam 15. In this embodiment, the design of the first inclined beam 14 makes the connection between the front beam 12 and the first longitudinal beam 11 not a right angle; the design of the second inclined beam 15 makes the connection between the front beam 12 and the second longitudinal beam 13 not a right angle; the included angles between the first inclined beam 14 and the first longitudinal beam 11, between the first inclined beam 14 and the front beam 12, between the front beam 12 and the second inclined beam 15, and between the second inclined beam 15 and the second longitudinal beam 13 are all obtuse angles, so that the bending part of the front beam pipe 1 can realize smooth transition, the internal stress of the front beam pipe 1 after bending is reduced, and the stability of the front beam pipe 1 after bending is ensured.
[0040] In an embodiment, as shown in Figure 1 and Figure 2 As shown, the front beam pipe 1 further comprises a first arc-shaped connecting section 16, a second arc-shaped connecting section 17, a third arc-shaped connecting section 18 and a fourth arc-shaped connecting section 19; the first arc-shaped connecting section 16 is connected between the first longitudinal beam 11 and the first inclined beam 14, the second arc-shaped connecting section 17 is connected between the first inclined beam 14 and the front beam 12, the third arc-shaped connecting section 18 is connected between the front beam 12 and the second inclined beam 15, and the fourth arc-shaped connecting section 19 is connected between the second inclined beam 15 and the second longitudinal beam 13; in the extension direction of the front beam pipe 1, the first longitudinal beam 11, the first arc-shaped connecting section 16, the first inclined beam 14, the second arc-shaped connecting section 17, the front beam 12, the third arc-shaped connecting section 18, the second inclined beam 15, the fourth arc-shaped connecting section 19 and the second longitudinal beam 13 are integrally formed. Understandably, the first arc-shaped connecting section 16, the second arc-shaped connecting section 17, the third arc-shaped connecting section 18 and the fourth arc-shaped connecting section 19 are also composed of the first side plate 102, the second side plate 103, the third side plate 104 and the fourth side plate 105.
[0041] Preferably, the bending angles of the first, second, third and fourth arc-shaped connecting segments 16, 17, 18 and 19 are all 100°-160°, and the bending radii are all 20 mm-150 mm.
[0042] In this embodiment, the first, second, third and fourth arc-shaped connecting segments 16, 17, 18 and 19 are designed to enable smooth transition at the bending part of the front beam tube 1, further reducing the internal stress of the front beam tube 1 after bending, and ensuring the stability of the front beam tube 1 after bending.
[0043] In one embodiment, as shown in Figure 1 and Figure 2 The battery case further comprises a first cross beam 4 arranged in the accommodating space 3; the opposite ends of the first cross beam 4 are connected between the first and fourth arc-shaped connecting segments 16 and 19; and the first cross beam 4, the front beam 12 and the rear beam tube 2 are arranged in parallel. In this embodiment, the opposite ends of the first cross beam 4 are respectively welded on the first and second arc-shaped connecting segments 16 and 17, and the first cross beam 4 can support the first and second longitudinal beams 11 and 13, further improving the side crash resistance of the battery case, and the residual internal stress at the welding position of the first cross beam 4 is small, further ensuring the stability of the first cross beam 4 connected between the first and second longitudinal beams 11 and 13.
[0044] Further, the opposite ends of the first cross beam 4 are respectively provided with a first arc-shaped end portion adapted to the first arc-shaped connecting segment 16 and a second arc-shaped end portion adapted to the fourth arc-shaped connecting segment 19; the first arc-shaped end portion connects the first arc-shaped connecting segment 16, and the second arc-shaped end portion connects the fourth arc-shaped connecting segment 19; in this embodiment, the design of the first and second arc-shaped end portions ensures the stability of the first cross beam 4 connected between the first and fourth arc-shaped connecting segments 16 and 19.
[0045] In one embodiment, as shown in Figure 1 and Figure 4As shown, the first cross beam 4 comprises a first cross plate 41 and first and second vertical plates 42 and 43 connected to opposite sides of the first cross plate 41, and a first recess 44 is formed between the first vertical plate 42, the first cross plate 41 and the second vertical plate 43. Understandably, the first cross beam 4 can be formed by bending a first steel plate into a concave structure. In this embodiment, the first cross beam 4 is formed by the first vertical plate 42, the first cross plate 41 and the second vertical plate 43, so that there are fewer welds between the first cross beam 4, the first longitudinal beam 11 and the second longitudinal beam 13, further reducing the manufacturing difficulty of the battery case.
[0046] In an embodiment, as shown in Figure 1 As shown, the battery case further comprises a second cross beam 5 arranged in the accommodating space 3; opposite ends of the second cross beam 5 are connected to the first longitudinal beam 11 and the second longitudinal beam 13, respectively; and the second cross beam 5, the front beam 12 and the rear beam tube 2 are arranged in parallel. Understandably, the front beam 12, the first cross beam 4, the second cross beam 5 and the rear beam tube 2 are arranged in pairs in parallel, and the front beam 12, the first cross beam 4, the second cross beam 5 and the rear beam tube 2 are sequentially and spaced apart along the direction of the first longitudinal beam 11. In this embodiment, the opposite ends of the second cross beam 5 are connected to the first longitudinal beam 11 and the second longitudinal beam 13, respectively, so that the second cross beam 5 can support the first longitudinal beam 11 and the second longitudinal beam 13, further improving the side crash resistance of the battery case.
[0047] In an embodiment, the second cross beam 5 comprises a second cross plate and third and fourth vertical plates connected to opposite sides of the second cross plate, and a second recess is formed between the third vertical plate, the second cross plate and the fourth vertical plate. Understandably, the second cross beam 5 can be formed by bending a second steel plate into a concave structure. In this embodiment, the second cross beam 5 is formed by the third vertical plate, the second cross plate and the fourth vertical plate, so that there are fewer welds between the second cross beam 5, the first longitudinal beam 11 and the second longitudinal beam 13, further reducing the manufacturing difficulty of the battery case.
[0048] In an embodiment, as shown in Figure 1 and Figure 5As shown, the battery shell further comprises a plurality of first lug pipes 6 connected to the first longitudinal beam 11 on the side away from the second longitudinal beam 13; the first lug pipe 6 comprises a first pipe body 61 and a second pipe body 62, the first lug pipe 6 is provided with a first lug hole on the first pipe body 61, and the second pipe body 62 is connected to the first longitudinal beam 11 at one end away from the first pipe body 61; as preferred, in the cross section perpendicular to the rear beam pipe 2, the length of the first pipe body 61 is smaller than the length of the second pipe body 62, and the width of the first pipe body 61 is greater than the width of the second pipe body 62; it can be understood that the first lug pipe 6 is a front beam pipe 1 structural member, and the first lug pipe 6 can be manufactured by stamping the front beam pipe 1 structural member, and the part of the first lug pipe 6 that is flattened after stamping forms the first pipe body 61, and the part of the first lug pipe 6 that is not deformed forms the second pipe body 62.
[0049] In an embodiment, as shown in Figure 1 As shown, the battery shell further comprises a plurality of second lug pipes 7 connected to the second longitudinal beam 13 on the side away from the first longitudinal beam 11; the second lug pipe 7 comprises a third pipe body and a fourth pipe body, the second lug pipe 7 is provided with a second lug hole on the third pipe body, and the fourth pipe body is connected to the second longitudinal beam 13 at one end away from the third pipe body; as preferred, in the cross section perpendicular to the rear beam pipe 2, the length of the third pipe body is smaller than the length of the fourth pipe body, and the width of the third pipe body is greater than the width of the fourth pipe body. It can be understood that the second lug pipe 7 is a front beam pipe 1 structural member, and the second lug pipe 7 can be manufactured by stamping the front beam pipe 1 structural member, and the part of the second lug pipe 7 that is flattened after stamping forms the third pipe body, and the part of the second lug pipe 7 that is not deformed forms the fourth pipe body.
[0050] In the utility model, the battery shell is installed on the frame through the first lug pipe 6 and the second lug pipe 7, and the first lug pipe 6 is provided with a third inner cavity, and the second lug pipe 7 is all provided with a fourth inner cavity. The first lug pipe 6 and the second lug pipe 7 are both composed of two pipe bodies with different sizes, when the battery shell is subjected to side impact, the first lug pipe 6 and the second lug pipe 7 can stably transmit side impact force, the first longitudinal beam 11 can be better protected by the first lug pipe 6, the second longitudinal beam 13 can be better protected by the second lug pipe 7, and the side impact resistance of the battery shell is further improved.
[0051] Another embodiment of the utility model further provides a battery pack, including battery monomer and above-mentioned battery shell, the battery monomer is installed in the containing space 3.
[0052] Still another embodiment of the utility model further provides a vehicle, including above-mentioned battery pack.
[0053] The above merely describes the preferred embodiments of the present application and is not intended to limit the present application, and any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims
1. A battery case characterized by comprising: The front beam pipe comprises a first side plate, a second side plate, a third side plate and a fourth side plate; the first side plate, the second side plate, the third side plate and the fourth side plate are sequentially connected in series and enclose a first inner cavity in a cross section perpendicular to the extension direction of the front beam pipe; The front beam pipe comprises a first longitudinal beam, a front beam and a second longitudinal beam which are sequentially connected in series in the extension direction of the front beam pipe; One end of the rear beam pipe is connected to the end of the first longitudinal beam away from the front beam, and the other end of the rear beam pipe is connected to the end of the second longitudinal beam away from the front beam; the rear beam pipe, the first longitudinal beam, the front beam and the second longitudinal beam enclose a receiving space for mounting a single battery.
2. The battery case according to claim 1, wherein The front beam pipe further comprises a first inclined beam and a second inclined beam, one end of the first inclined beam is connected to the first longitudinal beam, and the other end of the first inclined beam is connected to the first end of the front beam; one end of the second inclined beam is connected to the second longitudinal beam, and the other end of the second inclined beam is connected to the second end of the front beam; The first longitudinal beam, the first inclined beam, the front beam, the second inclined beam and the second longitudinal beam are integrally formed in the extension direction of the front beam pipe.
3. The battery case according to claim 2, wherein The front beam pipe further comprises a first arc-shaped connecting section, a second arc-shaped connecting section, a third arc-shaped connecting section and a fourth arc-shaped connecting section; the first arc-shaped connecting section is connected between the first longitudinal beam and the first inclined beam, the second arc-shaped connecting section is connected between the first inclined beam and the front beam, the third arc-shaped connecting section is connected between the front beam and the second inclined beam, and the fourth arc-shaped connecting section is connected between the second inclined beam and the second longitudinal beam; The first longitudinal beam, the first arc-shaped connecting section, the first inclined beam, the second arc-shaped connecting section, the front beam, the third arc-shaped connecting section, the second inclined beam, the fourth arc-shaped connecting section and the second longitudinal beam are integrally formed in the extension direction of the front beam pipe.
4. The battery case according to claim 3, wherein The battery case further comprises a first cross beam arranged in the receiving space; opposite ends of the first cross beam are connected between the first arc-shaped connecting section and the fourth arc-shaped connecting section; the first cross beam, the front beam and the rear beam pipe are arranged in parallel.
5. The battery case of claim 4, wherein, The first cross beam comprises a first cross plate and first and second vertical plates connected to opposite sides of the first cross plate, and a first recess is formed between the first vertical plate, the first cross plate and the second vertical plate.
6. The battery case of claim 1, wherein, The battery case further comprises a second cross beam arranged in the receiving space; opposite ends of the second cross beam are connected to the first longitudinal beam and the second longitudinal beam respectively; the second cross beam, the front beam and the rear beam pipe are arranged in parallel.
7. The battery case of claim 6, wherein, The second cross beam comprises a second cross plate and third and fourth vertical plates connected to opposite sides of the second cross plate, and a second recess is formed between the third vertical plate, the second cross plate and the fourth vertical plate.
8. The battery case of claim 1, wherein, The battery case further comprises a plurality of first lug pipes connected to one side of the first longitudinal beam away from the second longitudinal beam, and a plurality of second lug pipes connected to one side of the second longitudinal beam away from the first longitudinal beam; The first lug pipe comprises a first pipe body and a second pipe body formed integrally, the first pipe body is provided with a first lug hole, and the second pipe body is connected to the first longitudinal beam at an end away from the first pipe body; The second lug pipe comprises a third pipe body and a fourth pipe body formed integrally, the third pipe body is provided with a second lug hole, and the fourth pipe body is connected to the second longitudinal beam at an end away from the third pipe body.
9. The battery case of claim 8, wherein, In a cross section perpendicular to the rear beam pipe, the length of the first pipe body is less than the length of the second pipe body, and the width of the first pipe body is greater than the width of the second pipe body; in a cross section perpendicular to the rear beam pipe, the length of the third pipe body is less than the length of the fourth pipe body, and the width of the third pipe body is greater than the width of the fourth pipe body.
10. A battery pack, characterized by, A battery pack comprising a battery cell and the battery case according to any one of claims 1 to 9, the battery cell being installed in the accommodation space.
11. A vehicle characterized by comprising: A battery pack according to claim 10.