CN219123369U

CN219123369U - Beam module for battery pack and battery pack

Info

Publication number: CN219123369U
Application number: CN202222923008.8U
Authority: CN
Inventors: 姜亚平
Original assignee: Weilai Automobile Technology Anhui Co Ltd
Current assignee: Weilai Automobile Technology Anhui Co Ltd
Priority date: 2022-11-03
Filing date: 2022-11-03
Publication date: 2023-06-02
Anticipated expiration: 2032-11-03

Abstract

The utility model relates to a beam module for a battery pack and the battery pack. The utility model can improve the utilization rate of the battery pack volume.

Description

Beam module for battery pack and battery pack

Technical Field

The utility model relates to the field of power batteries, in particular to a beam module for a battery pack.

Background

Most of the prior battery packs have a cross beam or longitudinal beam structure inside, but the cross beam or the longitudinal beam only structurally plays a role in supporting the battery pack, and occupies a large amount of internal space of the battery pack. In the current battery pack, the space occupation rate of the battery cell unit for the battery pack is only 40%, and the cross beam or the longitudinal beam in the battery pack occupies a quite large part of the volume of the battery pack, so that the actual effective space utilization rate of the battery pack is too low.

Disclosure of Invention

The utility model aims to provide a beam module for a battery pack and the battery pack so as to improve the utilization rate of the volume of the battery pack.

The aim of the utility model is achieved by adopting the following technical scheme. The utility model provides a beam module for a battery pack, which comprises a beam, a battery cell unit and an insulating base, wherein a plurality of grooves are formed in the beam, the battery cell unit is arranged in the grooves, and the insulating base is arranged between the grooves and the battery cell unit.

In some embodiments, an exhaust channel is opened below the groove, the exhaust channel penetrating the body of the beam.

In some embodiments, the beam module further comprises a first exhaust port disposed at an end of the beam, the exhaust passage in communication with the first exhaust port.

In some embodiments, the first exhaust port is provided with a second exhaust port on both sides, and a side air inlet is further formed at the side part of the beam and near the end part of the beam, and the side air inlet is communicated with the second exhaust port.

In some embodiments, the side of the beam is provided with a plurality of reinforcing bars.

In some embodiments, the beam is further provided with one or more mounting portions, the mounting portions are arranged in rows with the battery cells, and the top and bottom of the mounting portions protrude from the upper surface and the lower surface of the beam, respectively.

In some embodiments, the beam module further comprises a busbar assembly comprising a busbar bracket and a busbar, the busbar bracket being disposed on top of the cell unit, the busbar being disposed on an upper surface of the busbar bracket and connected with the cell unit.

In some embodiments, the bus bar is configured at the mount portion in an arc-shaped structure surrounding the mount portion.

In some embodiments, the bottom of the beam is further provided with a securing interface for connection with a bottom guard or cold plate of a battery pack.

The utility model also provides a battery pack, which comprises the beam module for the battery pack.

The beneficial effects of the utility model at least comprise:

1. according to the utility model, the plurality of grooves are formed in the cross beam, the battery cell units are arranged in the grooves, the insulating base is arranged between the grooves and the battery cell units, and the battery cell units can be arranged in the longitudinal beam or the cross beam positioned in the middle of the battery pack, so that the volume utilization rate of the battery pack is improved.

2. According to the utility model, the exhaust channel is arranged below the groove in the cross beam, penetrates through the main body of the cross beam, the first exhaust ports are arranged at two ends of the cross beam in the length direction, and the exhaust channel is communicated with the first exhaust ports, so that the battery cell unit in the cross beam can be exhausted when thermal runaway occurs.

3. According to the utility model, the second exhaust ports are arranged on the two sides of the first exhaust port, the side air inlets are arranged on the side parts of the beams and near the end parts of the beams, and the side air inlets are communicated with the second exhaust ports, so that adverse effects on the exhaust of other cells except the beams when the cell units in the beams are out of control, and adverse effects on the exhaust of the cell units in the beams when the cell units except the beams are out of control are avoided.

The foregoing description is only an overview of the present utility model, and is intended to be implemented in accordance with the teachings of the present utility model, as well as the preferred embodiments thereof, together with the following detailed description of the utility model given in conjunction with the accompanying drawings.

Drawings

Fig. 1 is a schematic view showing an assembly structure of a beam module for a battery pack according to an embodiment of the present utility model;

FIG. 2 is a schematic exploded view of a beam module for a battery pack according to one embodiment of the present utility model;

fig. 3 is a schematic view showing a structure of a beam module for a battery pack in a state in which a battery cell is removed according to an embodiment of the present utility model;

FIG. 4 is a schematic view showing the structure of the bottom of a beam module for a battery pack according to an embodiment of the present utility model;

fig. 5 is another structural schematic view of the bottom of a beam module for a battery pack according to an embodiment of the present utility model.

Detailed Description

In order to further describe the technical means of the present utility model, a beam module for a battery pack and a specific embodiment of the battery pack according to the present utility model are described in detail below with reference to the accompanying drawings and preferred embodiments. The following examples are only for more clearly illustrating the technical solution of the present utility model, and therefore are only exemplary and are not intended to limit the scope of the present application.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the term "comprising" in the description of the present application and the claims and in the description of the figures above, and any variants thereof. Furthermore, the terms "first," "second," and the like, are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.

In the description of the present utility model, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed", "connected" and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

As shown in fig. 1, 2 and 3, the beam module for a battery pack according to the present utility model includes a cross beam 1, and the cross beam 1 is used to support the battery pack, and in some other embodiments, the beam module for a battery pack according to the present utility model may further include a longitudinal beam. The beam 1 is configured in a long strip shape, and a plurality of battery cells 11 are arranged in a row in the beam 1, and the battery cells 11 are spaced apart from each other by a certain distance. In one or more embodiments, the cell 11 is configured in a cylindrical shape. In some other embodiments, the cell 11 may also be configured as a square. The inside of crossbeam 1 is provided with a plurality of recesses 12 that are used for holding electric core unit 11, and recess 12 is arranged in the length direction of crossbeam 1 in the inside of crossbeam 1 in a row, and certain distance is kept between each recess 12, and the whole main part or the partial main part of every electric core unit 11 set up respectively in the inside of every recess 12, and the shape of recess 12 suits with electric core unit 11. In one or more embodiments, the beam module for a battery pack according to the present utility model includes a plurality of insulating bases 13, the insulating bases 13 being disposed between the grooves 12 and the battery cells 11 and covering the bottom surfaces of the battery cells 11 and a part of the body for electrically isolating the battery cells 11 from the beam 1.

According to the utility model, the plurality of grooves 12 are formed in the cross beam 1, the battery cell units 11 are arranged in the grooves 12, the insulating base 13 is arranged between the grooves 12 and the battery cell units 11, so that the battery cell units 11 can be arranged in the longitudinal beam or the cross beam positioned in the middle of the battery pack, and the volume utilization rate of the battery pack is improved.

As shown in fig. 4, in one or more embodiments, an exhaust channel 14 is formed below the groove 12 in the beam 1, the exhaust channel 14 penetrates through the main body in the length direction of the beam 1, the beam module for a battery pack according to the present utility model further includes first exhaust ports 15, the first exhaust ports 15 are disposed at two ends in the length direction of the beam 1, two ends of the exhaust channel 14 are opposite to the first exhaust ports 15, and two ends of the exhaust channel 14 are communicated with the first exhaust ports 15, so as to exhaust the battery cell 11 in the beam 1 when thermal runaway occurs. In some other embodiments, there may be a space between the outer surface of each groove 12 in the cross beam 1 and the inner wall of the cross beam 1, which may also serve as an exhaust channel.

As shown in fig. 5, in one or more embodiments, two second exhaust ports 16 are provided on both sides of the first exhaust port 15, and side intake ports 17 are further provided at both sides of the cross beam 1 in the length direction and at both ends of the cross beam 1 near the length direction, and the side intake ports 17 communicate with the second exhaust ports 16 for exhausting other cells except the cell unit 11 that the cross beam 1 has. According to the utility model, the exhaust channel 14 is communicated with the first exhaust port 15 only, the second exhaust port 16 and the first exhaust port 15 are mutually separated, and the side air inlet 17 is communicated with the second exhaust port 16 only, so that adverse effects on the exhaust of other cells except the cross beam 1 when the cell 11 in the cross beam 1 is in thermal runaway can be avoided, and adverse effects on the exhaust of the cell 11 in the cross beam 1 when the cell except the cross beam 1 is in thermal runaway can also be avoided.

In one or more embodiments, the cross beam 1 is of cast structural design, and the two sides of the cross beam 1 in the length direction are provided with a plurality of reinforcing ribs 19 for increasing the rigidity of the whole cross beam 1.

In one or more embodiments, the cross beam 1 is further provided with one or more mounting portions 2, the mounting portions 2 are arranged in rows with the plurality of battery cells 11 along the length direction of the cross beam 1, the top and bottom of the mounting portions 2 protrude from the upper surface and the lower surface of the cross beam 1 respectively, and the mounting portions 2 are used for being connected with a vehicle body of the vehicle to mount the cross beam 1 to the vehicle body.

In one or more embodiments, the beam module for a battery pack according to the present utility model further includes a bus bar assembly 3, the bus bar assembly 3 includes a bus bar bracket 31 and a bus bar 32, the bus bar bracket 31 is disposed on top of the battery cells 11 for supporting the bus bar 32, and the bus bar 32 is disposed on an upper surface of the bus bar bracket 31 and connected to each battery cell 11 for connecting each battery cell 11 in series or parallel. Note that, the bus bar 32 is configured at the mount portion 2 in an arc-shaped structure surrounding the mount portion 2 so as to avoid the hole structure of the mount portion 2.

In one or more embodiments, the bottom of the cross beam 1 is also provided with a fixing interface 18 for connection with the bottom guard or cold plate of the battery pack.

The previous description of the disclosed aspects is provided to enable any person skilled in the art to practice the present utility model. Various modifications to these aspects will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other aspects without departing from the scope of the utility model. Thus, the present utility model is not intended to be limited to the aspects shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. The utility model provides a beam module for battery package, its characterized in that includes roof beam, electric core unit and insulating base, the inside of roof beam is provided with a plurality of recesses, electric core unit set up in the inside of recess, insulating base set up in the recess with between the electric core unit.

2. The beam module for a battery pack according to claim 1, wherein a vent passage is opened below the groove, the vent passage penetrating the body of the beam.

3. The beam module for a battery pack of claim 2, further comprising a first vent port disposed at an end of the beam, the vent channel in communication with the first vent port.

4. A beam module for a battery pack according to claim 3, wherein the first exhaust port is provided with second exhaust ports on both sides, and a side intake port is further opened at a side portion of the beam near an end portion of the beam, the side intake port being in communication with the second exhaust ports.

5. The beam module for a battery pack according to claim 1, wherein the side of the beam is provided with a plurality of reinforcing ribs.

6. The beam module for a battery pack according to claim 1, wherein one or more mounting parts are further provided on the beam, the mounting parts are arranged in a row with the battery cells, and the top and bottom of the mounting parts protrude from the upper and lower surfaces of the beam, respectively.

7. The beam module for a battery pack according to claim 6, further comprising a bus bar assembly comprising a bus bar bracket and a bus bar, the bus bar bracket being disposed on top of the cell unit, the bus bar being disposed on an upper surface of the bus bar bracket and connected with the cell unit.

8. The beam module for a battery pack according to claim 7, wherein the bus bar is configured at the mount portion in an arc-shaped structure surrounding the mount portion.

9. The beam module for a battery pack according to claim 1, wherein the bottom of the beam is further provided with a fixing interface for connection with a bottom guard or a cold plate of the battery pack.

10. Battery pack, characterized by comprising a beam module for a battery pack according to any of claims 1 to 9.