Battery pack and vehicle

Abstract

The utility model provides a battery pack and a vehicle, the battery pack provided by the utility model comprises a lower shell and a connecting part which is arranged at the bottom of the lower shell and is used for being connected with an automobile body; the lower shell comprises a bottom plate and a cross beam arranged on the bottom plate; the connecting part comprises a through hole penetrating through the bottom plate and a connecting hole which is formed in the bottom of the cross beam and corresponds to the through hole, a connecting piece arranged on the automobile body penetrates through the through hole and then is connected with the connecting hole, and the battery pack is fixed to the automobile body. According to the battery pack disclosed by the utility model, the connecting part connected with the vehicle body is arranged at the bottom of the lower shell, and the connecting part comprises the through hole which penetrates through the bottom plate and the connecting hole which is formed in the cross beam and is used for being connected with the connecting piece, so that the occupied space of the battery pack in the width direction of the whole vehicle is reduced; and the occupied space in the height direction is not additionally increased, the structure is simple, and arrangement and implementation are convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of power batteries, and in particular to a battery pack. Meanwhile, the utility model also relates to a vehicle equipped with the battery pack. Background Art

[0002] At present, one of the biggest pain points of new energy commercial vehicles is the space problem. In actual use, multiple battery packs are often installed on commercial vehicles to meet the power demand of commercial vehicles, which often leads to different arrangements of battery packs for commercial vehicles and passenger vehicles, and different installation methods of battery packs on the vehicle. However, the existing battery packs are limited by the connection structure for connecting with the vehicle body, which means that after the battery packs are installed on the vehicle body, they often occupy a large amount of space in the width direction of the vehicle, which can easily have an adverse effect on the layout of the battery packs and is not convenient for the layout of multiple battery packs. Utility Model Content

[0003] In view of this, the utility model aims to provide a battery pack to help reduce the space occupied by the battery pack in the width direction of the vehicle.

[0004] In order to achieve the above object, the technical solution of the utility model is implemented as follows:

[0005] A battery pack comprises a lower shell, and a connecting portion provided at the bottom of the lower shell and used for connecting to a vehicle body;

[0006] The lower shell includes a bottom plate and a crossbeam arranged on the bottom plate;

[0007] The connecting portion includes a through hole penetrating the bottom plate, and a connecting hole provided at the bottom of the cross beam and corresponding to the through hole. A connecting piece provided on the vehicle body passes through the through hole and is connected to the connecting hole to fix the battery pack to the vehicle body.

[0008] Furthermore, the connecting portion further comprises a pressing member, and the pressing member comprises a connecting portion and a pressing portion;

[0009] The connecting portion is cylindrical and can be connected to the connecting hole and the connecting piece;

[0010] The pressing portion is arranged at one end of the connecting portion away from the connecting hole and extends outwardly in the radial direction of the connecting portion. The pressing portion presses the bottom plate and makes the bottom plate press against the crossbeam.

[0011] Furthermore, a receiving groove is provided on the bottom plate, the receiving groove is communicated with the through hole, and the pressing part is accommodated in the receiving groove.

[0012] Furthermore, a sealing member is provided between the pressing portion and the bottom plate for sealing a gap therebetween.

[0013] Further, the connecting hole is a threaded hole, and the connecting portion has an external threaded portion for connecting to the connecting hole; and / or,

[0014] The connecting member is a bolt, and the connecting portion has an internal thread portion for connecting with the connecting member.

[0015] Furthermore, a wire thread sleeve is provided between the external threaded portion and the connecting hole.

[0016] Furthermore, a sealant is provided between the cross beam and the bottom plate for sealing the gap therebetween.

[0017] Furthermore, a protrusion protruding downward is provided on the bottom plate at a position close to the through hole.

[0018] Furthermore, it also includes a battery module arranged on the bottom plate, and the cross beam is arranged at the end of the battery module along the battery cell stacking direction.

[0019] Compared with the prior art, the utility model has the following advantages:

[0020] The battery pack described in the utility model is conducive to reducing the space occupied by the battery pack in the width direction of the whole vehicle, and does not increase the space occupied in the height direction. The structure is simple and easy to set up and implement.

[0021] In addition, by providing a clamping member, and making the clamping member include a connecting part and a clamping part, it is convenient to fix the crossbeam on the bottom plate while facilitating the subsequent connection of the connecting member and the battery pack. In addition, by providing a receiving groove and accommodating the clamping part in the receiving groove, when the battery pack is installed on the vehicle body, it is convenient to make the large surface of the bottom of the bottom plate abut against the vehicle body, which is beneficial to ensure the stability of the battery pack installation, and will not increase the space occupied by the battery pack in the height direction of the whole vehicle, which is convenient for layout.

[0022] In addition, by providing a seal between the pressing part and the bottom plate, the sealing performance of the battery pack is ensured. And by providing a sealant between the crossbeam and the bottom plate, the sealing performance of the battery pack is further ensured.

[0023] Another object of the present invention is to provide a vehicle, on which the battery pack as described above is provided.

[0024] The vehicle described in the utility model has the same technical effect as the above-mentioned battery pack compared with the prior art, and will not be described in detail here. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the accompanying drawings:

[0026] Figure 1 A partial structural schematic diagram of a battery pack according to an embodiment of the utility model;

[0027] Figure 2 A top view of the internal structure of the battery pack according to an embodiment of the present utility model;

[0028] Figure 3 A bottom view of the battery pack according to an embodiment of the utility model;

[0029] Figure 4 It is a structural schematic diagram of the connecting portion described in an embodiment of the utility model.

[0030] Description of reference numerals:

[0031] 1. Bottom plate; 2. Crossbeam; 3. Through hole; 4. Connecting hole; 5. Pressing piece; 501. Connecting part; 5011. Internal threaded part; 502. Pressing part; 6. Receiving groove; 7. Sealing piece; 8. Wire screw sleeve; 9. Protrusion; 10. Battery module; 11. Sealant. DETAILED DESCRIPTION

[0032] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0033] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0034] In addition, in the description of the present invention, unless otherwise clearly defined, the terms "installation", "connection", "connection", and "connector" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood in combination with specific circumstances.

[0035] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0036] Embodiment 1

[0037] This embodiment relates to a battery pack, the overall structure of which is as follows: Figure 1 Figure 4 As shown in the figure, the battery pack includes a lower shell and a connecting portion provided at the bottom of the lower shell and used to connect with the vehicle body. The lower shell includes a bottom plate 1 and a crossbeam 2 provided on the bottom plate 1. The connecting portion includes a through hole 3 provided through the bottom plate 1 and a connecting hole 4 provided at the bottom of the crossbeam 2 and corresponding to the through hole 3. The connecting member provided on the vehicle body passes through the through hole 3 and is connected to the connecting hole 4, thereby fixing the battery pack to the vehicle body.

[0038] It can be understood that in this embodiment, by arranging the connecting part connected to the vehicle body at the bottom of the lower shell, and making the connecting part include a through hole 3 arranged through the bottom plate 1, and a connecting hole 4 arranged on the cross beam 2 and used for connecting to the connecting piece, it is helpful to reduce the space occupied by the battery pack in the width direction of the whole vehicle, and will not increase the space occupied in the height direction. The structure is simple and easy to set up and implement.

[0039] Based on the above overall introduction, as a preferred implementation method, Figure 4 As shown in , in this embodiment, the connection part also includes a clamping member 5, and the clamping member 5 includes a connecting portion 501 and a clamping portion 502. The connecting portion 501 is cylindrical and can be connected to the connecting hole 4 and the connecting member. The clamping portion 502 is provided at one end of the connecting portion 501 away from the connecting hole 4, and extends radially outward along the connecting portion 501. The clamping portion 502 presses the bottom plate 1 and makes the bottom plate 1 and the crossbeam 2 press tightly. By providing a clamping member 5 and making the clamping member 5 include a connecting portion 501 and a clamping portion 502, it is convenient to fix the crossbeam 2 on the bottom plate 1 while facilitating the subsequent connection of the connecting member with the battery pack.

[0040] As a preferred example, Figure 4As shown in , in this embodiment, a receiving groove 6 is provided on the bottom plate 1, the receiving groove 6 is communicated with the through hole 3, and the pressing portion 502 is accommodated in the receiving groove 6. It can be understood that by providing the receiving groove 6 and accommodating the pressing portion 502 in the receiving groove 6, when the battery pack is installed on the vehicle body, it is convenient to make the large surface of the bottom of the bottom plate 1 abut against the vehicle body, which is conducive to ensuring the stability of the battery pack setting, and will not increase the space occupied by the battery pack in the height direction of the whole vehicle, which is convenient for arrangement.

[0041] As a preferred implementation method, Figure 4 As shown in FIG, a seal 7 is provided between the pressing portion 502 and the bottom plate 1 to seal the gap therebetween. This arrangement is conducive to ensuring the sealing of the battery pack. The seal 7 can be a rubber seal ring commonly used in the prior art, which will not be described in detail here.

[0042] To facilitate the connection between the clamping member 5 and the connecting hole 4 and the connecting member, preferably, in this embodiment, the connecting hole 4 is a threaded hole, and the connecting portion 501 has an external threaded portion for connecting with the connecting hole 4. The connecting member is a bolt, and the connecting portion 501 has an internal threaded portion 5011 for connecting with the connecting member. With such a configuration, the connection structure is simple and the connection operation is convenient. In addition, the clamping member 5 can be made of SWRCH35K (cold heading steel).

[0043] Of course, in the present embodiment, the connection part 501 is connected to the connection hole 4 and the connection piece by means of threaded connection, which is only a preferred implementation method. In addition, in other embodiments, the clamping member 5 and the connection hole 4 and the connection piece can also be connected by other connection methods commonly used in the prior art, such as snap-on connection, etc. In this case, the connection hole 4 and the connection piece can be set into other forms, and the specific settings can be made with reference to the corresponding structures in the snap-on structures commonly used in the prior art, which will not be described in detail here.

[0044] In addition, as a preferred implementation, Figure 4 As shown in the figure, a wire screw sleeve 8 is provided between the external threaded portion and the connecting hole 4. It should be noted that the wire screw sleeve 8 of this embodiment can adopt the wire screw sleeve commonly used in the prior art, and its structure will not be described in detail here. And by providing the wire screw sleeve 8 between the external threaded portion and the connecting hole 4, it is beneficial to improve the connection strength between the pressing member 5 and the connecting hole 4.

[0045] Moreover, as a preferred arrangement, in this embodiment, a sealant 11 is provided between the cross beam 2 and the bottom plate 1 to seal the gap therebetween. This arrangement is conducive to further ensuring the sealing performance of the battery pack. Figure 3As shown in the figure, in this embodiment, a protrusion 9 protruding downward is provided on the bottom plate 1 near the through hole 3. The protrusion 9 is provided to improve the structural strength of the position where the through hole 3 is provided on the bottom plate 1, thereby ensuring the connection strength between the connector and the battery pack.

[0046] As a better arrangement, Figure 2 As shown in , the battery pack of this embodiment further includes a battery module 10 disposed on the bottom plate 1, and a crossbeam 2 is disposed at the end of the battery module 10 along the battery cell stacking direction. In this arrangement, the crossbeam 2 can serve as the end plate of the module, so that there is no need to re-arrange the module end plate, which facilitates the stacking of the battery cells in the battery pack and helps reduce the cost of the battery pack.

[0047] It should also be noted that, in a specific implementation, the cross beam 2 can be a plurality of cross beams 2 arranged at intervals on the bottom plate 1, such as Figure 1 and Figure 2 As shown in the figure, in this embodiment, there are three cross beams 2 arranged at intervals. Of course, in other embodiments, the cross beams 2 may be arranged in other numbers, such as two, four, five, etc. In addition, a plurality of connection holes 4 arranged at intervals may be provided on the cross beam 2, and through holes 3 may be provided at corresponding positions on the bottom plate 1, so that the battery pack can be connected to the vehicle body through a plurality of connectors, such as Figure 2 and Figure 3 As shown in FIG. 1 , in this embodiment, four connection holes 4 arranged at intervals are provided on each cross beam 2 , and corresponding through holes 3 are provided on the bottom plate 1 .

[0048] In addition, if Figure 3 As shown in , in this embodiment, the protrusion 9 can be a long strip extending along the length direction of the bottom plate 1, and there are four protrusions 9 arranged at intervals along the width direction of the bottom plate 1, and each protrusion 9 passes through each through hole 3 arranged in sequence along the length direction of the bottom plate 1. Such a setting has a simple structure and is easy to set up and implement. Of course, in other embodiments, the protrusion 9 can also be set in multiple numbers corresponding to the through holes 3. In this case, the protrusion 9 can be set only near the through holes 3.

[0049] The battery pack of this embodiment is advantageous in reducing the space occupied by the battery pack in the width direction of the vehicle by setting the connection part connected to the vehicle body at the bottom of the lower shell, and making the connection part include the through hole 3 provided on the bottom plate 1 and the connection hole 4 provided on the cross beam 2, without increasing the space occupied in the height direction, and has a simple structure and is easy to set up and implement. In addition, by providing the pressing member 5, it is convenient to fix the cross beam 2 on the bottom plate 1, and facilitate the connection between the subsequent connection member and the battery pack.

[0050] Embodiment 2

[0051] This embodiment relates to a vehicle, on which the battery pack of the first embodiment is provided.

[0052] The vehicle of this embodiment has the same technical effect as the battery pack of Example 1 compared to the prior art, and will not be described in detail here.

[0053] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A battery pack, characterized in that: It comprises a lower shell, and a connecting portion provided at the bottom of the lower shell and used for connecting with the automobile body; The lower shell includes a bottom plate and a crossbeam arranged on the bottom plate; The connecting portion includes a through hole penetrating the bottom plate, and a connecting hole provided at the bottom of the cross beam and corresponding to the through hole. A connecting piece provided on the vehicle body passes through the through hole and is connected to the connecting hole to fix the battery pack to the vehicle body.

2. The battery pack according to claim 1, characterized in that: The connecting portion further comprises a pressing member, and the pressing member comprises a connecting portion and a pressing portion; The connecting portion is cylindrical and can be connected to the connecting hole and the connecting piece; The pressing portion is arranged at one end of the connecting portion away from the connecting hole and extends outwardly in the radial direction of the connecting portion. The pressing portion presses the bottom plate and makes the bottom plate press against the crossbeam.

3. The battery pack according to claim 2, characterized in that: The bottom plate is provided with a receiving groove, the receiving groove is communicated with the through hole, and the pressing part is received in the receiving groove.

4. The battery pack according to claim 2, characterized in that: A sealing member is provided between the pressing portion and the bottom plate for sealing a gap therebetween.

5. The battery pack according to claim 2, characterized in that: The connecting hole is a threaded hole, and the connecting portion has an external threaded portion for connecting to the connecting hole; and / or, The connecting member is a bolt, and the connecting portion has an internal thread portion for connecting with the connecting member.

6. The battery pack according to claim 5, characterized in that: A wire thread sleeve is provided between the external threaded portion and the connecting hole.

7. The battery pack according to claim 1, characterized in that: A sealant is provided between the cross beam and the bottom plate for sealing the gap therebetween.

8. The battery pack according to claim 1, characterized in that: A protrusion protruding downward is provided on the bottom plate at a position close to the through hole.

9. The battery pack according to claim 1, characterized in that: It also includes a battery module arranged on the bottom plate, and the crossbeam is arranged at the end of the battery module along the battery cell stacking direction.

10. A vehicle, characterized in that: The vehicle is provided with the battery pack according to any one of claims 1 to 9.

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