Electric vehicle battery box with internal and external buffering capability

Abstract

The utility model belongs to the technical field of electric vehicle accessories, and particularly relates to an electric vehicle battery box with internal and external buffering capacity. An inner buffering air bag group is arranged on the inner wall of the battery box body; and an outer pressure-resistant rib plate group is arranged on the outer wall of the bottom plate of the battery box body. According to the electric vehicle battery box with the internal and external buffering capability, external vibration can be shielded through the internal buffering air bag group and the external buffering rib plate, and the internal battery core, the protection plate and the connecting piece are prevented from being influenced by external vibration.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of electric vehicle accessories, and particularly relates to an electric vehicle battery box with internal and external buffering capacity. BACKGROUND

[0002] The existing battery box generally reduces the influence of the vibration generated during the driving of the vehicle on the battery pack by using support frames, partitions and damping materials inside. Since the vibration of the battery box is still transmitted to the inside of the battery box, this shockproof mode belongs to passive protection. CONTENT OF THE UTILITY MODEL

[0003] Therefore, the application provides an electric vehicle battery box with internal and external buffering capacity to solve all or part of the technical problems described in the background art.

[0004] The innovative idea of the application is that the internal buffering air bag group and the external compression rib group are arranged on the battery box to form a shielding effect on the inside of the battery box, prevent external vibration from being transmitted to the inside of the battery box to affect the battery cells, and ensure the use effect of the power battery pack.

[0005] The application provides the following solution to solve the technical problems:

[0006] An electric vehicle battery box with internal and external buffering capacity, the inner wall of the battery box body is provided with an internal buffering air bag group; the internal buffering air bag group includes a plurality of length direction air bags and a plurality of width direction air bags; the outer wall of the bottom plate of the battery box body is provided with an external compression rib group; the external compression rib group includes a plurality of length direction ribs and a plurality of width direction ribs.

[0007] Preferably, the length direction air bag and the width direction air bag each include a vertical plate part and a bottom plate part; the vertical plate part and the bottom plate part are integrally formed and penetrate each other.

[0008] Preferably, the length direction air bag and the width direction air bag are evenly arranged on the long side and the wide side of the battery box 1 respectively; each two adjacent length direction air bags and each two adjacent width direction air bags define an outward air bag.

[0009] Preferably, the length direction rib and the width direction rib each extend outwardly perpendicular to the bottom plate of the battery box body and cross each other to form a three-dimensional compression network structure.

[0010] Preferably, the adjacent length direction rib and the adjacent width direction rib define a compression cavity.

[0011] Preferably, the opening part of the battery box body is further provided with a hollow compression plate.

[0012] As preferred, the side part of the battery box body is further provided with a side compression rib plate; the side compression rib plate extends downward from the hollow compression plate to form an arc-shaped support and compression structure.

[0013] Beneficial technical effects:

[0014] The battery box with internal and external buffering capacity provided by the application can shield external vibration through the internal buffering air bag group and the external buffering rib plate, so that external vibration received by the battery box cannot be transmitted to the inside of the battery box, which can avoid the influence of external vibration on the internal battery cell, the protection plate and the connecting piece, and realizes the active shock buffering function.

[0015] The technical solutions and technical effects of the application will be described in detail in combination with the drawings and specific embodiments in the description. BRIEF DESCRIPTION OF DRAWINGS

[0016] Fig. 1 : front view of the battery box of the electric vehicle;

[0017] Fig. 2 : side view of the battery box of the electric vehicle;

[0018] Fig. 3 : bottom view of the battery box of the electric vehicle;

[0019] FIGURE DESCRIPTION:

[0020] 1-battery box body;

[0021] 2-internal buffering air bag group, 21-length direction air bag, 22-width direction air bag, 23-vertical plate part, 24-bottom plate part, 25-outward air bag;

[0022] 3-external compression rib plate group, 31-length direction rib plate, 32-width direction rib plate, 33-compression cavity;

[0023] 4-hollow compression plate;

[0024] 5-side compression rib plate. DETAILED DESCRIPTION

[0025] Please refer to Figs. 1-3 The battery box with internal and external buffering capacity provided by the application is integrally formed by injection molding mold. The internal buffering air bag group 2 is arranged on the inner wall of the battery box body 1; the external compression rib plate group 3 is arranged on the outer wall of the bottom plate of the battery box body 1.

[0026] The internal buffering air bag group 2 includes a plurality of length direction air bags 21 arranged uniformly in the length direction of the box body and a plurality of width direction air bags 22 arranged uniformly in the width direction of the box body.

[0027] The length direction air bag 21 and the width direction air bag 22 are evenly arranged on the long side and the wide side of the battery box body 1 respectively; each two adjacent length direction air bags 21 and each two adjacent width direction air bags 22 define an outward air bag 25.

[0028] The length direction air bag 21 and the width direction air bag 22 each include a vertical plate part 23 and a bottom plate part 24; the vertical plate part 23 is distributed on the vertical plate of the box body, and the bottom plate part 24 is distributed on the bottom plate of the box body; the vertical plate part 23 and the bottom plate part 24 are integrally formed and penetrate each other to form a complete fluid channel.

[0029] The outer compression rib plate group 3 includes a plurality of length direction rib plates 31 evenly arranged on the bottom plate of the box body in the length direction and a plurality of width direction rib plates 32 evenly arranged on the bottom plate of the box body in the width direction.

[0030] The length direction rib plate 31 and the width direction rib plate 32 each extend outwardly perpendicular to the bottom plate of the battery box body 1 and cross each other to form a three-dimensional compression resistance network structure; a compression resistance cavity 34 is defined between two adjacent length direction rib plates 31 and adjacent width direction rib plates 32 which cross each other.

[0031] The hollow pressing plate 4 is symmetrically arranged at the opening part of the battery box body 1, and a plurality of side compression rib plates 5 are symmetrically arranged at the side of the battery box body 1; the side compression rib plate 5 extends downward from the hollow pressing plate 4 to form an arc-shaped support and compression resistance structure.

[0032] Principle and effect description:

[0033] In normal use, the battery box of the electric vehicle is assembled on the frame of the electric vehicle, and a plurality of single cells and connecting members and protection circuit boards are assembled in the battery box body; the bottom and the periphery of the battery box are tightly matched with the battery box assembly position on the frame. When the battery box runs on a bumpy road, the vibration from the wheels will be buffered through the elastic deformation of the outer compression rib plate group to extrude the compression resistance cavity, and then through the change of the air pressure of the compression resistance cavity. When the battery box body is bumped or extruded, it will be buffered through the elastic deformation and air pressure change of the inner buffer air bag group and the outward air bag. Thus, the electric vehicle battery box with inner and outer buffering capacity provided by the application can shield external vibration through the inner buffer air bag group and the outer buffer rib plate, so that the external vibration of the battery box will not be transmitted to the inside of the battery box, thereby avoiding the influence of external vibration on the internal cells, protection plates and connecting members, and realizing the active shock buffering function.

[0034] The technical solutions and technical effects of the present application are described in detail above in combination with the accompanying drawings and specific embodiments, and it should be noted that other embodiments can be developed by those skilled in the art on the basis of the present application; any simple modification and equivalent replacement without departing from the innovative concept of the present application are covered by the present application and belong to the protection scope of the present patent.

Claims

1. An electric vehicle battery box with internal and external buffering capacity, comprising a battery box body (1), characterized in that: an internal buffering air bag group (2) is arranged on the inner wall of the battery box body (1); the internal buffering air bag group (2) comprises a plurality of length direction air bags (21) and a plurality of width direction air bags (22); an external compression rib plate group (3) is arranged on the outer wall of the bottom plate of the battery box body (1); the external compression rib plate group (3) comprises a plurality of length direction rib plates (31) and a plurality of width direction rib plates (32).

2. The electric vehicle battery box with internal and external buffering capacity according to claim 1, characterized in that: the length direction air bag (21) and the width direction air bag (22) each comprise a vertical plate part (23) and a bottom plate part (24); the vertical plate part (23) and the bottom plate part (24) are integrally formed and penetrate each other.

3. The electric vehicle battery box with internal and external buffering capacity according to claim 2, characterized in that: the length direction air bag (21) and the width direction air bag (22) are evenly arranged on the long side and the wide side of the battery box body (1), respectively; each two adjacent length direction air bags (21) and each two adjacent width direction air bags (22) define an outward air bag (25).

4. The electric vehicle battery box with internal and external buffering capacity according to claim 1, characterized in that: the length direction rib plate (31) and the width direction rib plate (32) each extend outwardly perpendicular to the bottom plate of the battery box body (1) and cross each other to form a three-dimensional compression resisting network structure.

5. The electric vehicle battery box with internal and external buffering capacity according to claim 4, characterized in that: the adjacent length direction rib plate (31) and the adjacent width direction rib plate (32) define a compression resisting cavity (33).

6. The electric vehicle battery box with internal and external buffering capacity according to claim 1, characterized in that: a hollow compression plate (4) is further arranged at the opening part of the battery box body (1).

7. The electric vehicle battery box with internal and external buffering capacity according to claim 6, characterized in that: a side compression rib plate (5) is further arranged at the side of the battery box body (1); the side compression rib plate (5) extends downwardly from the hollow compression plate (4) to form an arc-shaped support and compression resisting structure.

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