Battery pack and vehicle

Abstract

The utility model provides a battery pack and a vehicle. The battery pack comprises a pair of mounting seats which are oppositely arranged, a battery cell group and a limiting piece, the limiting piece comprises an assembling part and an anti-bending part, and the two ends of the assembling part are connected with the upper portions of the pair of installation bases correspondingly. And the pair of mounting seats and the limiting piece form a mounting space. And the battery cell group is mounted in the mounting space and is propped against the assembling part. And the anti-bending part is arranged on one side, deviating from the battery cell group, of the assembling part. By arranging the anti-bending part on the assembling part, the overall anti-bending performance of the limiting piece is improved. And the tilting of the limiting piece is inhibited, so that the limiting piece can be tightly pressed with the battery cell group. And the battery cell group can be uniformly stressed, so that the movement of the battery cell group in the height direction of the vehicle is reduced, and the safety of the battery pack is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of vehicles, in particular to a battery pack and a vehicle. BACKGROUND

[0002] With the rapid development of new energy vehicles, the performance of the battery pack is also continuously improved. In order to ensure the safety of the battery pack, the limiting of the battery cell group in the vehicle height direction is particularly important. If the battery cell group is not effectively fixed, the battery cell group will jump during the driving of the vehicle, causing safety accidents.

[0003] At present, a limiting piece is usually arranged above the battery cell group to prevent the battery cell group from moving. However, since the limiting piece is generally fixed at both ends, the force acting on the battery cell group is concentrated at both ends of the limiting piece. Moreover, due to the problems such as size tolerance and force when fixing the limiting piece, the limiting piece is often slightly tilted, resulting in a gap between the battery and the pressing strip. Due to the above two reasons, part of the battery cells in the battery cell group cannot be reliably limited, resulting in poor safety performance of the battery pack. CONTENT OF THE UTILITY MODEL

[0004] The present application provides a battery pack and a vehicle to solve the related technical problems.

[0005] The present application provides a battery pack, which comprises a pair of mounting seats arranged oppositely, a battery cell group and a limiting piece. The limiting piece comprises an assembling portion and a bending-resistant portion. Both ends of the assembling portion are connected to the upper portions of the pair of mounting seats, respectively. The pair of mounting seats and the limiting piece form a mounting space. The battery cell group is mounted into the mounting space and abuts against the assembling portion. The bending-resistant portion is arranged on the side of the assembling portion away from the battery cell group.

[0006] By arranging the bending-resistant portion on the assembling portion, the bending resistance of the limiting piece as a whole is improved. The tilting of the limiting piece is inhibited, so that the limiting piece can be tightly pressed against the battery cell group. The battery cell group as a whole can be uniformly stressed, reducing the jumping of the battery cell group in the vehicle height direction and improving the safety of the battery pack.

[0007] Further, the bending-resistant portion extends from the region of one end of the assembling portion to the region of the other end. By lengthening the bending-resistant portion, the bending resistance of the bending-resistant portion is improved, further reducing the movement degree of the battery cell group and improving the safety of the battery pack.

[0008] Further, both ends of the bending-resistant portion are spaced apart from both ends of the assembling portion, respectively. The spacing regions of both ends of the assembling portion are mounted to the pair of mounting seats, respectively. By arranging the spacing regions, the connection position between the limiting piece and the mounting seat can be avoided, interference is avoided, and the connection strength is improved.

[0009] Further, the spacing region is provided with an assembly hole, and the assembly hole is screw-connected with the mounting seat. The screw connection has faster disassembly and assembly efficiency and higher structural strength.

[0010] Further, the anti-bending part comprises a main body and a wrapping segment, two sides of the main body extend beyond the assembly part, and the wrapping segment is formed by extending downward from the two sides of the main body; the main body and the wrapping segment are fixedly connected to the assembly part. The anti-bending part is in a U shape and is inverted in the assembly part, thereby strengthening the top surface and the side surface of the assembly part and further improving the anti-bending effect of the anti-bending part, reducing the deformation degree of the limiting part itself, improving the limiting effect of the limiting part on the battery cell group, and improving the safety of the battery pack.

[0011] Further, the main body and the wrapping segment are glued to the assembly part. The gluing connection has higher strength, is convenient to operate, and has higher production efficiency.

[0012] Further, the assembly part is made of a metal material. The metal material can provide higher structural strength, improve the stability of the limiting part, and further improve the safety of the battery pack.

[0013] Further, the anti-bending part is made of a composite material of glass fiber and epoxy resin. The composite material of glass fiber and epoxy resin has higher anti-bending performance, improves the anti-bending effect of the anti-bending part, enhances the limiting ability of the limiting part, and improves the safety of the battery pack.

[0014] Further, the assembly part comprises a contact surface abutting against the battery cell group, and the contact surface is provided with an insulating layer. By providing the insulating layer, the battery cell and the limiting part are prevented from conducting electricity, and the safety of the battery pack is further improved.

[0015] The application also provides a vehicle comprising the above battery pack. Since the battery pack has higher safety, the vehicle of the application also has higher safety performance.

[0016] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the present specification. BRIEF DESCRIPTION OF DRAWINGS

[0017] The drawings herein are incorporated into the specification and form a part of the specification, show embodiments consistent with the present specification, and together with the specification serve to explain the principles of the present specification.

[0018] Figure 1 is a structural diagram of a battery pack in an exemplary embodiment of the present application;

[0019] Figure 2 is Figure 1 a structural diagram of a limiting part in

[0020] Figure 3 is Figure 2 a sectional view of the limiting piece in the middle;

[0021] Figure 4 is Figure 2 a partial enlarged view of the limiting piece in the middle.

[0022] The mounting space-100; the mounting seat-10; the first mounting seat-11; the second mounting seat-12; the electric core group-20; the first electric core group-21; the first electric core-211; the second electric core group-22; the second electric core-221; the limiting piece-30; the assembly part-31; the interval area-310; the contact surface-311; the assembly hole-312; the anti-bending part-32; the main body-321; the wrapping section-322; the structural adhesive-40. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments (or, the implementation manners) of the present application will be described clearly and completely in combination with the accompanying drawings. When the following description refers to the accompanying drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated.

[0024] If the application embodiments involve directional indications or positional relationships (such as up, down, left, right, front, back, inner, outer, top, bottom, center, vertical, horizontal, longitudinal, transverse, length, width, counterclockwise, clockwise, axial, radial, circumferential, etc.), such terms are only used to explain the relative positional relationship, movement condition, etc. between components in a certain posture (as shown in the drawings); if the specific posture changes, the directional indication or positional relationship also changes accordingly. In addition, the terms "first", "second", etc. in the application embodiments are only used for convenience of description, and cannot be understood as indicating or implying relative importance.

[0025] To avoid the electric core group from jumping in the vehicle height direction, a limiting piece is usually arranged above the electric core group. However, since the limiting piece adopts a fixed mode at both ends, the stress of the electric core group is concentrated at the positions close to both ends of the limiting piece. At the same time, due to the problems such as dimensional tolerance and acting force when fixing the limiting piece, the limiting piece is often slightly tilted, so that a gap appears between the battery and the pressing strip. The present application provides a battery pack and a vehicle to solve the related technical problems.

[0026] As Figure 1 and Figure 2As shown, the battery pack provided by the present application comprises a pair of mounting seats 10, a battery cell group 20 and a limiting piece 30. The pair of mounting seats 10 are oppositely arranged. The limiting piece 30 comprises an assembling portion 31 and a bending-resistant portion 32. Two ends of the assembling portion 31 are respectively connected with upper portions of the pair of mounting seats 10. The pair of mounting seats 10 and the limiting piece 30 form a mounting space 100. The battery cell group 20 is mounted into the mounting space 100 and abuts against the assembling portion 31. The bending-resistant portion 32 is arranged on a side of the assembling portion 31 away from the battery cell group 20.

[0027] By arranging the bending-resistant portion 32 on the assembling portion 31, the bending resistance of the limiting piece 30 as a whole is improved. The warping of the limiting piece 30 is inhibited, so that the limiting piece 30 can be tightly pressed against the battery cell group 20. The battery cell group 20 as a whole can be uniformly stressed, the movement of the battery cell group 20 in the vehicle height direction is reduced, and the safety of the battery pack is improved.

[0028] The pair of mounting seats 10 comprises a first mounting seat 11 and a second mounting seat 12. The first mounting seat 11 and the second mounting seat 12 can have the same structure or different structures. The first mounting seat 11 and the second mounting seat 12 can be a beam structure of the battery pack or an end plate structure of a battery cell module. The specific type of the mounting seat 10 is not limited, as long as it can provide a mounting position for the limiting piece 30.

[0029] In Figure 1 In the directions shown, the direction indicated by l1 is the left-right direction of the vehicle. The direction indicated by l2 is the front-rear direction of the vehicle. The battery cell group 20 comprises a first battery cell group 21 and a second battery cell group 22. The first battery cell group 21 and the second battery cell group 22 are arranged along the left-right direction of the vehicle. The limiting piece 30 is located above the gap between the first battery cell group 21 and the second battery cell group 22 and abuts against both of them to limit the movement.

[0030] The first battery cell group 21 comprises a plurality of first battery cells 211. The plurality of first battery cells 211 are arranged along the front-rear direction of the vehicle. The second battery cell group 22 comprises a plurality of second battery cells 221, and the plurality of second battery cells 221 are arranged along the front-rear direction of the vehicle.

[0031] The limiting piece 30 as a whole can have a strip shape. The bending-resistant portion 32 extends from a region at one end of the assembling portion 31 to a region at the other end of the assembling portion 31. By lengthening the bending-resistant portion 32, the bending resistance of the bending-resistant portion 32 is improved, the movement of the battery cell group 20 is further reduced, and the safety of the battery pack is improved. The two ends of the bending-resistant portion 32 can be flush with the two ends of the assembling portion 31, or there can be a gap between the two ends of the bending-resistant portion 32 and the two ends of the assembling portion 31.

[0032] Please refer to Figure 3 and Figure 4As shown, in the embodiment in which the two ends of the assembly portion 31 are spaced apart from the two ends of the anti-bending portion 32 respectively, the spacing regions 310 at the two ends of the assembly portion 31 are respectively mounted to a pair of mounting seats 10. By providing the spacing regions 310, the connection position of the limiting piece 30 and the mounting seat 10 can be avoided, interference is avoided, and the connection strength is improved. In other embodiments, the anti-bending portion 32 can also wrap the assembly portion 31 as a whole to further improve the anti-bending effect.

[0033] The spacing region 310 is provided with an assembly hole 312 which is screw-connected with the mounting seat 10. The screw connection has a faster disassembly and assembly efficiency, improves the mounting efficiency of the battery pack, and is beneficial to the later maintenance. At the same time, the screw connection has a higher connection strength, further improving the safety of the battery pack.

[0034] The assembly portion 31 includes a contact surface 311 abutting the battery cell group 20. In an embodiment, the contact surface 311 is provided with an insulating layer. By providing the insulating layer, the battery cell group 20 and the limiting piece 30 are prevented from conducting electricity, further improving the safety of the battery pack.

[0035] The anti-bending portion 32 includes a main body 321 and a wrapping segment 322. In an embodiment, the two sides of the main body 321 extend beyond the assembly portion 31. The wrapping segment 322 is formed by extending downward from the two sides of the main body 321. The main body 321 and the wrapping segment 322 are fixedly connected to the assembly portion 31.

[0036] The anti-bending portion 32 is U-shaped and is invertedly buckled above the assembly portion 31, which has a simple structure, is convenient to manufacture, and reduces production costs. At the same time, the anti-bending portion 32 can strengthen the top surface and the side surface of the assembly portion 31, further improve the anti-bending effect of the anti-bending portion 32, reduce the deformation degree of the limiting piece 30 itself, improve the limiting effect of the limiting piece 30 on the battery cell group 20, and improve the safety of the battery pack.

[0037] The main body 321 and the wrapping segment 322 are glued to the assembly portion 31, which has a high strength and is convenient to operate, and has a high production efficiency. Specifically, as shown, Figure 3 The structure glue 40 connects the main body 321 and the wrapping segment 322 with the assembly portion 31. Structure glue can also be provided between the limiting piece 30 and the battery cell group 20, and the limiting piece 30 and the battery cell group 20 are glued to improve the limiting effect of the limiting piece 30 on the battery cell group 20.

[0038] The assembly portion 31 can be made of a metal material, such as steel, and the specific grade can be LH201. The metal material can provide a high structural strength, improve the stability of the limiting piece 30, and further improve the safety of the battery pack.

[0039] The bending-resistant part 32 can be made of a composite material of glass fiber and epoxy resin. The composite material of glass fiber and epoxy resin has high bending resistance, improves the bending resistance of the bending-resistant part, improves the limiting effect of the limiting part 30, and improves the safety of the battery pack. The specific materials of the assembling part 31 and the bending-resistant part 32 are not limited.

[0040] The application also provides a vehicle comprising the above battery pack. Since the battery pack has high safety, the vehicle of the application also has high safety performance. The vehicle of the application can be an electric vehicle or a hybrid vehicle, and the specific type is not limited.

[0041] It should be noted that the technical solutions or technical features described in the above embodiments can be combined or supplemented with each other without conflict. The scope of protection of the application is not limited to the precise structures described in the above embodiments and shown in the drawings; any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the application shall be included in the scope of protection of the application.

Claims

1. A battery pack, characterized by, Comprising: a pair of mounting seats arranged oppositely, an electric core group and a limiting member; the limiting member comprises an assembling portion and a bending-resistant portion, two ends of the assembling portion are respectively connected with upper portions of a pair of the mounting seats; the pair of the mounting seats and the limiting member form a mounting space; the electric core group is mounted into the mounting space and abuts against the assembling portion; the bending-resistant portion is arranged on a side of the assembling portion away from the electric core group.

2. The battery pack of claim 1, wherein, the bending-resistant portion extends from a region of one end of the assembling portion to a region of the other end.

3. The battery pack of claim 2, wherein, two ends of the bending-resistant portion are respectively spaced apart from two ends of the assembling portion, interval regions of the two ends of the assembling portion are respectively mounted to a pair of the mounting seats.

4. The battery pack of claim 3, wherein, the interval regions are provided with assembling holes, the assembling holes are screw-connected with the mounting seats.

5. The battery pack of claim 1, wherein, the bending-resistant portion comprises a main body and a wrapping segment, two sides of the main body extend beyond the assembling portion, the wrapping segment extends downward from the two sides of the main body to form; the main body and the wrapping segment are fixedly connected to the assembling portion.

6. The battery pack of claim 5, wherein, the main body and the wrapping segment are glued to the assembling portion.

7. The battery pack of claim 1, wherein, the assembling portion is made of a metal material.

8. The battery pack of claim 1, wherein, the bending-resistant portion is made of a composite material of glass fiber and epoxy resin.

9. The battery pack of claim 1, wherein, the assembling portion comprises a contact surface abutting against the electric core group, the contact surface is provided with an insulating layer.

10. A vehicle characterized by comprising: Comprising: the battery pack of any one of claims 1-9.

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