Battery box and battery pack

Abstract

The utility model discloses a battery box and a battery pack. The battery box comprises: a box body, wherein the box body comprises a bottom plate and a box frame forming an accommodating cavity on the bottom plate; the box cover covers one end, in the Z-axis direction, of the box frame; the reinforcing beams are arranged in the containing cavity, the box cover is connected with the reinforcing beams, and the reinforcing beams extend in the Y-axis direction, so that the two ends, in the Y-axis direction, of the reinforcing beams are connected to the two side walls, in the Y-axis direction, of the box frame correspondingly. According to the utility model, the box cover is connected with the reinforcing beam, and the reinforcing beam extends along the Y-axis direction and is connected to the two side walls of the box body, so that the box cover and the reinforcing beam have a connection area which is large enough, the strength of the box cover is effectively improved, the existence of an area with relatively weak rigidity is avoided, and meanwhile, the reinforcing beam transmits the stress of the box cover to the periphery of the box body; the overall strength of the battery box is greatly improved, the overall rigidity and main mode of the battery box are improved, and the problem of low-frequency resonance between the battery box and a vehicle is prevented.

Description

Technical Field

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

[0002] Existing new energy vehicles generally use a battery pack consisting of one or more battery boxes as the main energy storage device, so the battery box needs to be installed on the vehicle. When the vehicle is driving, the vibration caused by the uneven road surface will cause the battery box to be excited. However, in the existing battery box, the box cover is generally only covered on the box body, and there is an area with relatively weak rigidity, resulting in the overall rigidity and main mode of the battery box being low, which is easy to resonate with the vehicle, thereby affecting the strength of the entire vehicle and bringing a poor user experience to users. Utility Model Content

[0003] In order to overcome at least one of the defects of the prior art described above, the utility model provides a battery box, which can effectively improve the strength of the box cover, avoid the existence of areas with relatively weak rigidity, and prevent the battery box and the vehicle from having low-frequency resonance problems.

[0004] A battery box according to an embodiment of the utility model includes: a box body; a box cover, wherein the box cover is arranged at one end of the box body along the Z-axis direction; at least one reinforcing beam, wherein the reinforcing beam is arranged in the box body, the box cover is connected to the reinforcing beam, and the reinforcing beam extends along the Y-axis direction so that the two ends of the reinforcing beam along the Y-axis direction are respectively connected to the two side walls of the box body along the Y-axis direction.

[0005] In the present battery box, the box cover is connected to the reinforcing beam, and the reinforcing beam extends along the Y-axis direction and is connected to two opposite side walls of the box body, so that the box cover arranged on the upper end of the box body can have a sufficiently large connection area with the reinforcing beam, thereby effectively improving the strength of the box cover and avoiding the presence of relatively weak rigidity areas in the box cover. At the same time, the reinforcing beam can transfer the force of the box cover to the periphery of the box body, thereby greatly improving the overall strength of the battery box, improving the overall rigidity and main mode of the battery box, and preventing the battery box and the vehicle from having low-frequency resonance problems.

[0006] According to some embodiments of the present invention, a connecting bracket is further included, and the end of the reinforcing beam is detachably connected to the connecting bracket, and the connecting bracket is fixedly connected to the side wall of the box body.

[0007] According to some embodiments of the present invention, at least one longitudinal beam extending along the Y-axis direction is installed in the box body, and the reinforcing beam is arranged between the longitudinal beam and the box cover.

[0008] According to some embodiments of the present invention, an extension portion is provided at one end of the longitudinal beam close to the box cover, and the extension portion is detachably connected to the reinforcing beam.

[0009] According to some embodiments of the present invention, a plurality of cross beams spaced apart along the Y-axis direction are installed in the box body, the cross beams are connected to the longitudinal beams, and the longitudinal beams are perpendicular to the cross beams.

[0010] According to some embodiments of the present utility model, the cross beam is provided with a first slot, and the longitudinal beam is provided with a second slot that cooperates with the first slot.

[0011] According to some embodiments of the utility model, the box cover is recessed toward the reinforcing beam to form a connecting groove, one end of the reinforcing beam close to the box cover abuts against the connecting groove, a locking accessory is installed on the connecting groove, and the locking accessory is connected to the reinforcing beam.

[0012] According to some embodiments of the present invention, a connecting portion is provided on the edge of the box cover, and the connecting portion is connected to the upper end of the box body.

[0013] According to some embodiments of the present invention, a plurality of reinforcing shape structures are further included, and the reinforcing shape structures are distributed on the box cover.

[0014] According to the same inventive concept, the utility model also proposes a battery pack, including the battery box as described above.

[0015] In summary, the battery box provided by the utility model has the following technical effects:

[0016] The box cover is connected to the reinforcing beam, and the reinforcing beam extends along the Y-axis direction and is connected to two opposite side walls of the box body, so that the box cover arranged on the upper end of the box body can have a sufficiently large connection area with the reinforcing beam, thereby effectively improving the strength of the box cover and avoiding the existence of relatively weak rigidity areas in the box cover. At the same time, the reinforcing beam can transfer the force of the box cover to the periphery of the box body, thereby greatly improving the overall strength of the battery box, improving the overall rigidity and main mode of the battery box, and preventing the battery box and the vehicle from having low-frequency resonance problems. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the structure of a battery box according to an embodiment of the utility model;

[0018] Figure 2 This is a schematic diagram of the structure of the box body of an embodiment of the utility model;

[0019] Figure 3 This is another structural schematic diagram of the box body of the utility model embodiment.

[0020] The meanings of the reference numerals are as follows:

[0021] 1. Box body; 2. Box cover; 21. Connecting groove; 22. Locking accessory; 23. Connecting part; 24. Strengthening shape structure; 3. Strengthening beam; 31. Connecting bracket; 4. Longitudinal beam; 41. Extension part; 42. Second slot; 5. Cross beam; 51. First slot. DETAILED DESCRIPTION

[0022] For better understanding and implementation, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0023] In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc. indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0025] See also Figure 1 and Figure 2The utility model discloses a battery box, which includes a box body 1, a box cover 2 and at least one reinforcing beam 3. In some embodiments, the box cover 2 is arranged on one end of the box body 1 along the Z-axis direction; the reinforcing beam 3 is arranged in the box body 1, the box cover 2 is connected to the reinforcing beam 3, and the reinforcing beam 3 extends along the Y-axis direction, so that the two ends of the reinforcing beam 3 along the Y-axis direction are respectively connected to the two side walls of the box body 1 along the Y-axis direction. Optionally, the Y-axis direction is the length direction of the box body 1, the Z-axis direction is the height direction of the box body 1, and the X-axis direction is the width direction of the box body 1; preferably, the box cover 2 is connected to the reinforcing beam 3, and the reinforcing beam 3 extends along the Y-axis direction and is connected to the two opposite side walls of the box body 1, so that the box cover 2 covered on the upper end of the box body 1 can have a sufficiently large connection area with the reinforcing beam 3, thereby effectively improving the strength of the box cover 2 and avoiding the presence of relatively weak rigidity areas in the box cover 2. At the same time, the reinforcing beam 3 can transfer the force of the box cover 2 to the periphery of the box body 1, thereby greatly improving the overall strength of the battery box, thereby improving the overall rigidity and main mode of the battery box, and preventing low-frequency resonance problems between the battery box and the vehicle.

[0026] See also Figure 2 and Figure 3 In some embodiments, a connecting bracket 31 is further included, and the end of the reinforcing beam 3 is detachably connected to the connecting bracket 31, and the connecting bracket 31 is fixedly connected to the side wall of the box body 1. Optionally, the reinforcing beam 3 extends along the Y-axis direction, so that the two ends of the reinforcing beam 3 along the Y-axis direction are detachably connected to the two side walls of the box frame in the Y-axis direction through the corresponding connecting brackets 31. Optionally, the connecting bracket 31 is welded to the side wall of the box body 1, so that the connecting bracket 31 is firmly connected to the side wall of the box body 1. Optionally, the reinforcing beam 3 and the connecting bracket 31 are detachably connected by fasteners, and the fasteners can be bolts or screws, etc., so as to simplify the assembly operation of the reinforcing beam 3 on the connecting bracket 31. When the reinforcing beam 3 is damaged by external force, the reinforcing beam 3 can be replaced in time, thereby reducing maintenance costs.

[0027] See also Figure 2 and Figure 3In some embodiments, at least one longitudinal beam 4 extending along the Y-axis direction is installed in the box body 1, and the reinforcing beam 3 is arranged between the longitudinal beam 4 and the box cover 2. Optionally, the longitudinal beam 4 can be fixedly connected to the box body 1 by fasteners such as bolts, screws or rivets; optionally, the longitudinal beam 4 is welded in the box body 1; optionally, the longitudinal beam 4 and the box body 1 are integrally formed; preferably, by arranging the reinforcing beam 3 at one end of the longitudinal beam 4 close to the box cover 2, so that the longitudinal beam 4 can support the reinforcing beam 3, the reinforcing beam 3 is prevented from having insufficient rigidity due to the excessive distance between the two side walls of the box body 1 in the Y-axis direction, thereby further improving the strength of the reinforcing beam 3 and achieving a full improvement of the box cover 2. At the same time, since the reinforcing beam 3 is arranged between the longitudinal beam 4 and the box cover 2, the force generated by the box cover 2 is absorbed and buffered by the reinforcing beam 3 and then transmitted to the longitudinal beam 4, so that the longitudinal beam 4 is prevented from directly bearing the impact of the force generated by the box cover 2, and the longitudinal beam 4 is effectively prevented from being damaged by external forces, thereby ensuring the strength and service life of the box body 1. Furthermore, the reinforcing beam 3 and the connecting bracket 31 are detachably connected by fasteners. When the reinforcing beam 3 is damaged by external forces, the reinforcing beam 3 can be replaced in time, thereby reducing maintenance costs.

[0028] See also Figure 2 and Figure 3 In some embodiments, an extension portion 41 is provided at one end of the longitudinal beam 4 close to the box cover 2, and the extension portion 41 is detachably connected to the reinforcing beam 3. Optionally, the extension portion 41 is welded to the longitudinal beam 4; optionally, the extension portion 41 is formed integrally with the longitudinal beam 4; optionally, the reinforcing beam 3 and the extension portion 41 are detachably connected by fasteners such as bolts or screws, so that the longitudinal beam 4 can limit the reinforcing beam 3 through the extension portion 41, and there is no need to open additional assembly holes on the longitudinal beam 4, effectively ensuring that the original structure of the longitudinal beam 4 is not affected, avoiding the strength of the box body 1 from being affected, and at the same time, there is no need for the entire longitudinal beam 4 to extend in the direction of the reinforcing beam 3, effectively reducing the production cost and the weight of the box body 1. Further, when the reinforcing beam 3 needs to be repaired or replaced, the reinforcing beam 3 can be disassembled and assembled on the extension portion 41 through a simple assembly operation.

[0029] See also Figure 2 and Figure 3In some embodiments, the box body 1 is equipped with a plurality of cross beams 5 arranged at intervals along the Y-axis direction, the cross beams 5 are connected to the longitudinal beams 4, and the longitudinal beams 4 are perpendicular to the cross beams 5. Optionally, the cross beams 5 can be fixedly connected to the box body 1 by fasteners such as bolts, screws or rivets; Optionally, the cross beams 5 are welded to the box body 1; Optionally, the cross beams 5 and the box body 1 are integrally formed; Preferably, the longitudinal beams 4 are extended along the Y-axis direction, and the cross beams 5 are extended along the X-axis direction, so the cross beams 5 and the longitudinal beams 4 jointly divide the cavity in the box body 1 into a plurality of battery placement areas, and at the same time, the cross beams 5 and the longitudinal beams 4 form a grid structure in the box body 1, which can improve the strength of the box body 1; Further, the two ends of the cross beam 5 are respectively connected to the two side walls of the box body 1 in the X-axis direction, which can improve the strength of the box body 1 in the X-axis direction.

[0030] See also Figure 2 and Figure 3 In some embodiments, the cross beam 5 is provided with a first slot 51, and the longitudinal beam 4 is provided with a second slot 42 that cooperates with the first slot 51. Preferably, the first slot 51 cooperates with the second slot 42 to prevent the cross beam 5 and the longitudinal beam 4 extending in different directions from interfering with each other during assembly, so that the cross beam 5 and the longitudinal beam 4 cooperate with each other to form a stable whole, thereby forming a grid structure in the box body 1, thereby improving the strength of the box body 1.

[0031] See also Figure 1In some embodiments, the box cover 2 is recessed toward the reinforcing beam 3 to form a connecting groove 21, and one end of the reinforcing beam 3 close to the box cover 2 abuts against the connecting groove 21. A locking accessory 22 is installed on the connecting groove 21, and the locking accessory 22 is connected to the reinforcing beam 3. Optionally, the area where the box cover 2 and the reinforcing beam 3 are relatively arranged is recessed from the outer surface of the box cover 2 in the direction of the reinforcing beam 3 to form the connecting groove 21, so that the lower end of the connecting groove 21 abuts against the upper end of the reinforcing beam 3, avoiding the formation of suspension between the box cover 2 and the reinforcing beam 3, and ensuring that the box cover 2 can be locked to the reinforcing beam 3 through the locking member; optionally, the locking attachment 22 can be a bolt or a screw, etc., optionally, the locking attachment 22 is evenly distributed in the connecting groove 21 along the Y-axis direction, optionally, the connecting groove 21 is provided with a through hole, and the locking attachment 22 is connected to the reinforcing beam 3 through the through hole, so that the box cover 2 is locked to the reinforcing beam 3, so as to improve the strength of the box cover 2, avoid the box cover 2 having an area with relatively weak rigidity, and the reinforcing beam 3 can transfer the force of the box cover 2 to the box body 1, thereby greatly improving the overall strength of the battery box, improving the overall rigidity and main mode of the battery box, and preventing the battery box and the vehicle from having low-frequency resonance problems.

[0032] See also Figure 1 In some embodiments, the edge of the box cover 2 is provided with a connection portion 23, and the connection portion 23 is connected to the upper end of the box body 1. Optionally, the connection portion 23 may be a convex edge structure or a stepped structure; Optionally, the connection portion 23 may be connected to the upper end of the box body 1 by bolt connection, snap connection, etc. Preferably, the connection portion 23 is connected to the upper end of the box body 1 so that the edges of the box cover 2 are connected to the box body 1. Further, the remaining area of ​​the box cover 2 is connected to at least one of the reinforcing beams 3, so that the box cover 2 is firmly connected to the box body 1, and the strength of the box cover 2 is improved. At the same time, the force of the box cover 2 can be transmitted to the box body 1, thereby greatly improving the overall strength of the battery box.

[0033] See also Figure 1 In some embodiments, the box cover 2 further comprises a plurality of reinforcing molding structures 24, which are distributed on the box cover 2. Optionally, the reinforcing molding structures 24 may be convex structures or concave structures, and the convex structures and concave structures may be regular or irregular; Optionally, by providing a plurality of reinforcing molding structures 24 on the box cover 2, the box cover 2 may have a more complex structure than a flat box cover 2 of the same thickness, and may have a higher rigidity.

[0034] In some embodiments, a battery pack includes the battery box as described above.

[0035] See also Figure 1 , Figure 2 and Figure 3 In some embodiments, the box body 1 has a accommodating cavity inside, and the accommodating cavity is equipped with the cross beam 5 and the longitudinal beam 4 which are perpendicular to each other. Preferably, the longitudinal beam 4 is extended along the Y-axis direction, and the cross beam 5 is extended along the X-axis direction, so the cross beam 5 and the longitudinal beam 4 jointly divide the cavity in the box body 1 into several battery placement areas; optionally, the two ends of the cross beam 5 are respectively connected to the two side walls of the box body 1 in the X-axis direction, and the cross beam 5 is connected to the longitudinal beam 4, so that the cross beam 5 and the longitudinal beam 4 form a grid structure in the box body 1, which can improve the strength of the box body 1. Preferably, the upper end of the longitudinal beam 4 is provided with the extension portion 41, and the reinforcing beam 3 is detachably connected to the extension portion 41. Preferably, the reinforcing beam 3 extends along the Y-axis direction of the box body 1, so that the two ends of the reinforcing beam 3 are detachably connected to the two side walls of the box frame in the Y-axis direction through the corresponding connecting brackets 31, and at the same time, the box cover 2 arranged at the upper end of the box body 1 and the area where the reinforcing beam 3 is arranged opposite to each other is recessed from the outer surface of the box cover 2 in the direction of the reinforcing beam 3 to form the connecting groove 21, so that the lower end of the connecting groove 21 abuts against the upper end of the reinforcing beam 3 to avoid overhang between the box cover 2 and the reinforcing beam 3, so that the box cover 2 arranged at the upper end of the box body 1 can be connected with The reinforcing beam 3 has a sufficiently large connection area to ensure that the box cover 2 can be firmly connected to the reinforcing beam 3. Optionally, a locking accessory 22 is installed on the connecting groove 21, and the locking accessory 22 is connected to the reinforcing beam 3, thereby effectively improving the strength of the box cover 2 and avoiding the presence of relatively weak rigidity areas in the box cover 2. At the same time, the reinforcing beam 3 can transfer the force of the box cover 2 to the box body 1, thereby greatly improving the overall strength of the battery box, improving the overall rigidity and main mode of the battery box, and preventing the battery box and the vehicle from having low-frequency resonance problems. Furthermore, when the reinforcing beam 3 needs to be repaired or replaced, the reinforcing beam 3 can be disassembled and assembled on the extension portion 41 through simple assembly operations, effectively reducing maintenance costs.

[0036] The technical means disclosed in the solution of the utility model are not limited to the technical means disclosed in the above-mentioned implementation mode, but also include technical solutions composed of any combination of the above technical features. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the utility model, and these improvements and modifications are also regarded as the protection scope of the utility model.

Claims

1. A battery box, characterized in that: include: Box body (1); A box cover (2), the box cover (2) being arranged on one end of the box body (1) along the Z-axis direction; At least one reinforcing beam (3), the reinforcing beam (3) being arranged in the box body (1), the box cover (2) being connected to the reinforcing beam (3), and the reinforcing beam (3) extending along the Y-axis direction so that two ends of the reinforcing beam (3) along the Y-axis direction are respectively connected to two side walls of the box body (1) along the Y-axis direction.

2. The battery box according to claim 1, characterized in that: It also comprises a connecting bracket (31), to which the end of the reinforcing beam (3) is detachably connected, and the connecting bracket (31) is fixedly connected to the side wall of the box body (1).

3. The battery box according to claim 1, characterized in that: At least one longitudinal beam (4) extending along the Y-axis direction is installed in the box body (1), and the reinforcing beam (3) is arranged between the longitudinal beam (4) and the box cover (2).

4. The battery box according to claim 3, characterized in that: An extension portion (41) is provided at one end of the longitudinal beam (4) close to the box cover (2), and the extension portion (41) is detachably connected to the reinforcing beam (3).

5. The battery box according to claim 3, characterized in that: A plurality of cross beams (5) arranged at intervals along the Y-axis direction are installed in the box body (1); the cross beams (5) are connected to the longitudinal beams (4), and the longitudinal beams (4) are perpendicular to the cross beams (5).

6. The battery box according to claim 5, characterized in that: The cross beam (5) is provided with a first clamping groove (51), and the longitudinal beam (4) is provided with a second clamping groove (42) which is matched and connected with the first clamping groove (51).

7. The battery box according to any one of claims 1 to 6, characterized in that: The box cover (2) is recessed in the direction of the reinforcing beam (3) to form a connecting groove (21); one end of the reinforcing beam (3) close to the box cover (2) abuts against the connecting groove (21); a locking accessory (22) is mounted on the connecting groove (21); and the locking accessory (22) is connected to the reinforcing beam (3).

8. The battery box according to any one of claims 1 to 6, characterized in that: A connecting portion (23) is provided on the edge of the box cover (2), and the connecting portion (23) is connected to the upper end of the box body (1).

9. The battery box according to any one of claims 1 to 6, characterized in that: It also includes a plurality of reinforcing styling structures (24), wherein the reinforcing styling structures (24) are distributed on the box cover (2).

10. A battery pack, characterized in that: Comprising a battery box as described in any one of claims 1-9.

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