Battery pack mounting structure and new energy automobile

Abstract

The utility model discloses a battery pack mounting structure and a new energy automobile, the mounting structure comprises a chassis and a loading bracket, and the loading bracket is mounted on the chassis and used for loading a battery pack; the loading support comprises a bearing frame and limiting frames, the bearing frame is provided with a bearing part for upwards bearing the battery pack, the limiting frames are arranged on the front side and the rear side of the battery pack in the length direction of the chassis and provided with limiting parts for limiting the battery pack to move in the length direction of the chassis, and the bearing part and / or the limiting parts are / is provided with damping parts so as to abut against the battery pack through the damping parts. When the battery pack shifts relative to the bearing frame or the limiting frame under the inertia effect, the shock absorption piece can relieve kinetic energy impact from the battery pack, rigid contact between the battery pack and the limiting frame and rigid contact between the battery pack and the bearing frame are converted into flexible contact, and therefore rigid force transmission between the battery pack and the battery pack installation structure is relieved, and the service life of the battery pack is prolonged. The anti-shock force borne by the battery pack when the battery pack collides with the battery pack mounting structure is reduced, and a guarantee is provided for stable work of the battery pack.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of new energy vehicle accessories, and particularly relates to a battery pack mounting structure and a new energy vehicle. BACKGROUND

[0002] With the strengthening of the promotion of new energy vehicles by the country, new energy vehicles such as pure electric vehicles are increasingly common in daily production and life, and with the upgrading of power battery technology and the improvement of the energy density of power battery assemblies, the matching application of middle power packs in light commercial vehicles and other vehicle models is becoming more and more widespread. Since the power battery is placed in the middle of the vehicle chassis, in the traditional technology, the battery pack is rigidly mounted on the chassis. Due to the bumping, acceleration and deceleration during vehicle driving, torsional stress exists between the battery pack mounting structure and the chassis. These torsional stresses caused by vehicle acceleration and deceleration and bumping are transmitted to the battery pack, which affects the normal operation of the battery pack and easily affects the service life of the battery pack. Therefore, high requirements are put forward for the reliability of the battery pack. CONTENT OF THE UTILITY MODEL

[0003] The application provides a battery pack mounting structure and a new energy vehicle to solve at least one of the above technical problems.

[0004] The technical scheme adopted by the application is as follows:

[0005] A battery pack mounting structure, the mounting structure comprising a chassis and a loading bracket, the loading bracket being mounted on the chassis and used for loading a battery pack; the loading bracket comprising a supporting frame and a limiting frame, the supporting frame having a load-bearing part for upwardly supporting the battery pack, the limiting frame being provided on both sides of the battery pack along the length direction of the chassis and having a limiting part for limiting the displacement of the battery pack along the length direction of the chassis, and the load-bearing part and / or the limiting part being provided with a damping member to abut against the battery pack through the damping member.

[0006] The battery pack mounting structure of the application further comprises the following additional technical features:

[0007] The supporting frame comprises a first connecting part and a second connecting part, the first connecting part extending in the vertical direction, one end of the second connecting part being connected with the first connecting part, and the other end extending in the horizontal direction, the first connecting part being connected with the side surface of the chassis, and the second connecting part being connected with the bottom surface of the chassis.

[0008] The first connecting part and the second connecting part are integrally formed.

[0009] The limiting frame comprises a fixed part, the fixed part extending in the vertical direction and being connected with the side surface of the chassis, one end of the limiting part being connected with the fixed part, and the other end extending horizontally away from the fixed part.

[0010] The limiting frame further comprises a reinforcing rib connected to the fixing part and the limiting part respectively.

[0011] The supporting frame and the chassis are connected by bolts, and the bolts pass through the damping member, and / or the limiting frame and the chassis are connected by bolts, and the bolts pass through the damping member.

[0012] The damping member is a structure made of rubber.

[0013] The supporting frame is provided with a plurality of supporting frames arranged side by side and spaced apart along the length direction of the chassis, and two adjacent supporting frames are connected by a connecting member.

[0014] The supporting frame and the connecting member are integrally formed.

[0015] A new energy vehicle is also provided, comprising the battery pack mounting structure as described above.

[0016] Due to the adoption of the above technical scheme, the application has the following beneficial effects:

[0017] 1. The battery pack mounting structure of the application comprises a supporting frame and a limiting frame, wherein the supporting frame is provided with a bearing part which mainly bears the battery pack, and the limiting frame is provided with a limiting part which limits the displacement of the battery pack along the length direction of the chassis; during the driving of the vehicle, the speed will rapidly increase or decrease or the vehicle will be subjected to bumping and collision, etc., thereby causing the relative displacement between the battery pack and the battery mounting structure under the action of inertia; by arranging a damping member on the bearing part and / or the limiting part, when the battery pack is displaced relative to the supporting frame or the limiting frame under the action of inertia, the damping member can alleviate the kinetic energy impact from the battery pack, and convert the rigid contact between the battery pack and the limiting frame and the supporting frame into flexible contact, thereby slowing down the rigid force transmission between the battery pack and the battery pack mounting structure, and reducing the counter shock force suffered by the battery pack when it collides with the battery pack mounting structure, thereby providing protection for the stable operation of the battery pack.

[0018] 2. As a preferred embodiment of the application, the supporting frame comprises a first connecting part and a second connecting part, and the first connecting part and the second connecting part are connected to the side surface and the bottom surface of the chassis respectively, the first connecting part and the second connecting part jointly bear the counter force applied by the chassis, and when the battery pack is mounted, the gravity acts on the bracket, the first connecting part transmits part of the gravity of the battery pack to the side surface of the chassis, and the second connecting part transmits another part of the gravity of the battery pack to the bottom surface of the chassis; compared with the case where only one connecting part is connected to the chassis, the cooperation area of the supporting frame and the chassis is effectively increased, the stress concentration phenomenon of the supporting frame is avoided, and the yield strength requirement of the material of the supporting frame is reduced. The load bearing capacity of the supporting frame is improved, the stability of the battery pack mounting structure is improved, and the service life of the supporting frame is also improved.

[0019] Further, the first connecting part and the second connecting part are integrally formed, which improves the connecting strength of the first connecting part and the second connecting part, saves the operation of assembling the first connecting part and the second connecting part after being integrally formed, and is favorable for reducing the assembly difficulty of the bearing frame.

[0020] 3. As a preferred embodiment of the utility model, the limiting frame comprises a fixed part extending in the vertical direction and connected with the side surface of the bottom disc, and the limiting part is connected with the fixed part at one end and extends horizontally away from the fixed part at the other end. Since the limiting frame resists the force extending from the battery pack to the length direction of the bottom disc, compared with the fixed part being installed on the bottom surface of the bottom disc or other positions, the fixed part is arranged to extend in the vertical direction and be connected with the side surface of the bottom disc, which can reduce the bending at the connecting position of the fixed part and the limiting part, and improve the structural strength of the limiting frame.

[0021] Further, the fixed part and the limiting part are further connected with a reinforcing rib. When the limiting part bears the impact load from the battery pack, part of the impact load is transmitted to the fixed part through the connecting position between the limiting part and the fixed part, and part of the impact load is transmitted to the fixed part through the reinforcing rib. That is, the reinforcing rib has the functions of supporting the limiting part to improve the structural strength of the limiting frame and further reducing the stress concentration phenomenon between the fixed part and the limiting part. BRIEF DESCRIPTION OF DRAWINGS

[0022] The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiments of the application and serve to explain the principles of the application. In the drawings:

[0023] Figure 1 FIG. 1 is a structural schematic view of a battery pack and a battery pack mounting structure according to an embodiment of the application;

[0024] Figure 2 FIG. 2 is a structural schematic view of a battery pack mounting structure according to an embodiment of the application;

[0025] Figure 3 FIG. 3 is a structural schematic view of a bearing frame according to an embodiment of the application;

[0026] Figure 4 FIG. 4 is a structural schematic view of a limiting frame according to an embodiment of the application.

[0027] LIST OF REFERENCE NUMERALS

[0028] 1 bottom disc;

[0029] 2 loading support, 21 bearing frame, 211 bearing part, 212 first connecting part, 213 second connecting part, 22 limiting frame, 221 limiting part, 222 fixed part, 223 reinforcing rib

[0030] 3 shock absorbing member;

[0031] 4 connecting member;

[0032] 5 battery pack. DETAILED DESCRIPTION

[0033] In order to more clearly illustrate the overall concepts of the present application, the following will be described in detail with reference to the accompanying drawings.

[0034] In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. However, it will be apparent to one skilled in the art that the present application can be practiced without the specific details and other implementations can be employed. In other instances, well-known methods have not been described in detail in order to avoid obscuring the present application. It will be appreciated that embodiments of the present application can be combined with one another, and features of the embodiments can be combined with one another, unless the context clearly dictates otherwise.

[0035] In addition, in the description of the present application, it should be understood that the terms "top", "bottom", "inner", "outer", "axial", "radial", "circumferential" 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 present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0036] In the present application, unless specifically defined and limited otherwise, the terms "mounting", "connected", "connection", "fixed", and the like are to be broadly interpreted, for example, can be fixed connection, can also be detachable connection, or integral; can be mechanical connection, can also be electrical connection, and can also be communication; can be directly connected, can also be indirectly connected through an intermediate medium, can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0037] In the present application, unless specifically defined and limited otherwise, the first feature is "on" or "under" the second feature, which can be direct contact between the first and second features, or indirect contact between the first and second features through an intermediate medium. In the description of the specification, the description of the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples.

[0038] As shown in Figures 1 to 4 A battery pack mounting structure, the mounting structure comprises a chassis 1 and a loading bracket 2, the loading bracket 2 is mounted on the chassis 1 and used for loading a battery pack 5; the loading bracket 2 comprises a supporting frame 21 and a limiting frame 22, the supporting frame 21 is provided with a bearing part 211 for bearing the battery pack upward, the limiting frame 22 is provided on both sides of the battery pack 5 along the length direction of the chassis 1 and is provided with a limiting part 221 for limiting the displacement of the battery pack along the length direction of the chassis 1, the bearing part 211 and / or the limiting part 221 is provided with a damping member 3 to abut against the battery pack 5 through the damping member 3.

[0039] The battery pack mounting structure of the present application comprises a supporting frame 21 and a limiting frame 22, wherein the supporting frame 21 is provided with a bearing part 211 for mainly bearing the battery pack 5, and the limiting frame 22 is provided with a limiting part 221 for limiting the displacement of the battery pack 5 along the length direction of the chassis 1; during the driving of the vehicle, the speed will rapidly increase or decrease due to acceleration, deceleration or bumping collision, so that the battery pack 5 will be displaced relative to the battery pack mounting structure under the action of inertia. The present application does not limit the number of damping members 3, which can be provided on the bearing part 211, or on the limiting part 221, or as shown in Figure 2 the bearing part 211 and the limiting part 221 are provided with damping members 3, when the battery pack is displaced relative to the supporting frame 21 or the limiting frame 22 under the action of inertia, the damping members 3 can relieve the kinetic energy impact from the battery pack, and convert the rigid contact between the battery pack and the limiting frame 22 and the supporting frame 21 into flexible contact, so as to slow down the rigid force transmission between the battery pack and the battery pack mounting structure, and reduce the counter shock force suffered by the battery pack when it collides with the battery pack mounting structure, thereby providing protection for the stable operation of the battery pack.

[0040] As a preferred embodiment of the present application, as shown in Figure 3 the supporting frame 21 comprises a first connecting part 212 and a second connecting part 213, the first connecting part 212 extends in the vertical direction, one end of the second connecting part 213 is connected with the first connecting part 212, and the other end extends in the horizontal direction, the first connecting part 212 is connected with the side surface of the chassis 1, and the second connecting part 213 is connected with the bottom surface of the chassis 1.

[0041] The support frame 21 comprises a first connecting portion 212 and a second connecting portion 213, and the first connecting portion 212 and the second connecting portion 213 are connected with the side surface and the bottom surface of the bottom plate 1 respectively. The first connecting portion 212 and the second connecting portion 213 jointly bear the reaction force applied by the bottom plate 1. When the battery pack is installed, the gravity acts on the support frame. The first connecting portion 212 transmits part of the gravity of the battery pack to the side surface of the bottom plate 1, and the second connecting portion 213 transmits another part of the gravity of the battery pack to the bottom surface of the bottom plate 1. Compared with the case where the support frame 21 is connected with the bottom plate 1 through only one connecting portion, the contact area of the support frame 21 and the bottom plate 1 is effectively increased, the stress concentration phenomenon of the support frame 21 is avoided, and the requirement for the yield strength of the material of the support frame 21 is reduced. The carrying capacity of the support frame 21 is improved, the stability of the battery pack installation structure is improved, and the service life of the support frame 21 is also improved.

[0042] The present embodiment does not limit the connection relationship between the first connecting portion 212 and the second connecting portion 213, and any one of the following embodiments can be adopted.

[0043] Embodiment one: The first connecting portion 212 and the second connecting portion 213 are integrally formed, which improves the connection strength of the first connecting portion 212 and the second connecting portion 213, and saves the operation of assembling the first connecting portion 212 and the second connecting portion 213 after being separately formed, thereby facilitating the assembly difficulty of the support frame 21.

[0044] Embodiment two: The first connecting portion 212 and the second connecting portion 213 are separately manufactured and connected through welding or other ways. The first connecting portion 212 and the second connecting portion 213 are separately manufactured, which facilitates the manufacturing difficulty of the casting mold of the first connecting portion 212 and the second connecting portion 213.

[0045] As a preferred embodiment of the present application, as shown in Figure 4 The limiting frame 22 comprises a fixed portion 222 extending in the vertical direction and connected with the side surface of the bottom plate 1, and the limiting portion 221 is connected with the fixed portion 222 at one end and extends horizontally away from the fixed portion 222 at the other end. Since the limiting frame 22 resists the force extending in the length direction of the bottom plate 1 from the battery pack, compared with the case where the fixed portion 222 is installed on the bottom surface of the bottom plate 1 or other positions, the fixed portion 222 is arranged to extend in the vertical direction and connected with the side surface of the bottom plate 1, which can reduce the bending at the connection between the fixed portion 222 and the limiting portion 221, and improve the structural strength of the limiting frame 22.

[0046] As a preferred embodiment of the present embodiment, as shown in Figure 4As shown, the limiting frame 22 also includes reinforcing ribs 223, which are connected to both the fixing part 222 and the limiting part 221. When the limiting part 221 bears the impact load from the battery pack, part of the impact load is transmitted to the fixing part 222 through the connection between the limiting part 221 and the fixing part 222, and part of the load is transmitted to the fixing part 222 through the reinforcing ribs 223. That is, in addition to supporting the limiting part 221 to improve the structural strength of the limiting frame 22, the reinforcing ribs 223 also integrate the function of further reducing stress concentration between the fixing part 222 and the limiting part 221.

[0047] This embodiment does not limit the structural form of the reinforcing rib 223; it can be a rod-shaped structure or, as shown in the figure, ... a rod-shaped structure. Figure 4 The triangular structure shown has its two right-angled sides abutting against the fixing part 222 and the limiting part 221 respectively, which helps to enhance the strength enhancement effect of the reinforcing rib 223 on the limiting part 221.

[0048] This application does not limit the fixing method of the support frame 21, the limiting frame 22, and the shock absorber 3. It can be that the support frame 21 is bolted to the chassis 1, with the bolts passing through the shock absorber 3; or that the limiting frame 22 is bolted to the chassis 1, with the bolts passing through the shock absorber 3; or it can be as follows: Figure 3 The support frame 21 and the limiting frame 22 shown are connected to the chassis 1 by bolts. The shock absorber 3 is passed through the bolts. The support frame 21 and the limiting frame 22 are fixed to the chassis 1 by bolts, which makes it easier to assemble and disassemble the support frame 21 and the limiting frame 22, and helps to improve the installation efficiency of the support frame 21 and the limiting frame 22. The shock absorber 3 is fixed by bolts, which eliminates the need to set up a separate installation part for fixing the shock absorber 3, and helps to optimize the structural design of the loading bracket 2.

[0049] In a preferred embodiment of this application, the shock absorber 3 is a structure made of rubber. Because rubber possesses excellent elasticity and deformation recovery capability, the rubber-made shock absorber 3 can effectively mitigate impacts on the battery pack. Furthermore, after the battery pack resets, the shock absorber 3 can quickly reset due to its strong deformation recovery capability, thus ensuring effective shock absorption.

[0050] As a preferred embodiment of this application, such as Figure 2 As shown, the loading bracket 2 has multiple support frames 21 arranged side by side at intervals along the length of the chassis 1, and adjacent support frames 21 are connected by connectors 4. By setting multiple support frames 21, the stability of the support frames 21 in supporting the battery pack can be improved, and the connection between adjacent support frames 21 by connectors 4 makes the support frames 21 located on the same side of the chassis 1 connected as a whole, thereby improving the load-bearing capacity of the support frames 21.

[0051] As a preferred embodiment of the present embodiment, as shown in Figure 2 The support frame 21 is integrally formed with the connecting piece 4, which improves the connecting strength of the support frame 21 and the connecting piece 4, saves the operation of assembling the support frame 21 and the connecting piece 4 after being separately formed, and is favorable for reducing the assembly difficulty of the loading support 2.

[0052] The application further provides a new energy automobile comprising the battery pack mounting structure.

[0053] The application can be implemented by using or referring to the existing technology for the unmentioned parts.

[0054] Each of the embodiments in the specification is described in a progressive manner, and the same or similar parts between the embodiments can be referred to each other. Each of the embodiments mainly describes the differences from other embodiments.

[0055] The above only describes the embodiments of the application and is not intended to limit the application. The application can be variously changed and modified by those skilled in the art. Any modification, equivalent replacement, improvement, etc. within the spirit and principle of the application shall be included in the scope of the claims of the application.

Claims

1. A battery pack mounting structure characterized by comprising: The mounting structure comprises a chassis and a loading support mounted on the chassis and used for loading the battery pack; The loading support comprises a supporting frame and a limiting frame, the supporting frame has a supporting part upwardly supporting the battery pack, the limiting frame is arranged on both sides of the battery pack along the length direction of the chassis and has a limiting part limiting displacement of the battery pack along the length direction of the chassis, the supporting part and / or the limiting part is provided with a damping member to abut against the battery pack through the damping member; The supporting frame comprises a first connecting part extending along a vertical direction and a second connecting part, one end of the second connecting part is connected with the first connecting part, and the other end of the second connecting part extends along a horizontal direction, the first connecting part is connected with a side surface of the chassis, and the second connecting part is connected with a bottom surface of the chassis; The supporting frame and the chassis are connected through bolts, the bolts pass through the damping member, and / or the limiting frame and the chassis are connected through bolts, the bolts pass through the damping member; The damping member is a structure made of rubber; The damping member has a block structure with a thickness, and the damping member is provided with a passing hole for the bolts to pass through.

2. The battery pack mounting structure according to claim 1, wherein The first connecting part and the second connecting part are integrally formed.

3. The battery pack mounting structure according to claim 1, wherein The limiting frame comprises a fixed part extending along a vertical direction and connected with a side surface of the chassis, and the limiting part has one end connected with the fixed part and the other end extending horizontally away from the fixed part.

4. The battery pack mounting structure according to claim 3, wherein The limiting frame further comprises a reinforcing rib connected with the fixed part and the limiting part respectively.

5. The battery pack mounting structure according to claim 1, wherein The loading support is arranged with a plurality of supporting frames side by side and spaced apart along the length direction of the chassis, and adjacent two supporting frames are connected through a connecting piece.

6. The battery pack mounting structure according to claim 5, wherein The supporting frame and the connecting piece are integrally formed.

7. A new energy vehicle, characterized in that, The battery pack mounting structure according to any one of claims 1 to 6.

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