CN217823087U

CN217823087U - Battery box

Info

Publication number: CN217823087U
Application number: CN202221649385.0U
Authority: CN
Inventors: 郑琳
Original assignee: Shanghai Lanjun New Energy Technology Co Ltd
Current assignee: Shanghai Lanjun New Energy Technology Co Ltd
Priority date: 2022-06-28
Filing date: 2022-06-28
Publication date: 2022-11-15
Anticipated expiration: 2032-06-28

Abstract

The utility model provides a battery box, include: a battery box frame; the bottom beam is positioned on the inner side of the battery box body frame and is fixedly connected with the battery box body frame; the water cooling plate is fixed above the bottom beam and comprises a water inlet and a water outlet; the internal beam is positioned above the water cooling plate and is respectively and fixedly connected with the battery box body frame and the water cooling plate, and the internal beam, the water cooling plate and the battery box body frame form a battery accommodating space; the bottom protective plate is arranged below the frame of the battery box body; the buffer layer is arranged between the bottom protective plate and the water cooling plate; the water cooling plate is arranged above the bottom beam, so that the utilization rate of the height space of the battery box body is improved while the overall structure of the battery box body can be improved, the box body structure is simplified, and the light weight of the battery box body is realized to a certain extent.

Description

Battery box

Technical Field

The utility model relates to a battery assembly technical field especially relates to a battery box.

Background

With the continuous development of new energy technology, power batteries become an important direction for the development of new energy. For a power battery, a battery module is one of important constituent structures, and as an important device for vehicle energy output, it is important to increase the energy density of the battery module in a limited space and how to increase the utilization space of a battery box, so as to reduce the weight of the battery box.

In the prior art, the battery case generally adopts an integral die-cast aluminum structure. When an operator packs the battery cell and other parts into the battery box body to form a battery system, the water cooling plate is generally directly arranged at the bottom of the battery box body, the water cooling plate can not bear the weight of the built-in battery and the parts, the overall structural strength can not be increased, a large amount of space can be occupied, the utilization efficiency of the space of the battery box body is seriously influenced, and the complexity of the structure of the battery box body is improved.

SUMMERY OF THE UTILITY MODEL

In view of the above shortcomings in the prior art, an object of the present invention is to provide a battery box for solving the problems of low space utilization rate and complex box structure of the battery box in the prior art.

To achieve the above and other related objects, the present invention provides a battery case, which includes at least:

a battery box frame;

the bottom beam is positioned on the inner side of the battery box body frame and is fixedly connected with the battery box body frame;

the water cooling plate is fixed above the bottom beam and comprises a water inlet and a water outlet;

the internal beam is positioned above the water cooling plate and is respectively and fixedly connected with the battery box body frame and the water cooling plate, and the internal beam, the water cooling plate and the battery box body frame form a battery accommodating space;

the bottom protection plate is arranged below the battery box body frame;

the buffer layer is arranged between the bottom guard plate and the water cooling plate.

Optionally, the battery box frame is an integrally formed battery box frame or a split welded battery box frame.

Optionally, the bottom guard plate is a stamped plate, and the bottom guard plate is fixedly connected to the frame of the battery box body, where the connection manner includes one or a combination of welding, riveting, or FDS connection.

Optionally, the bottom beam comprises one or a combination of a longitudinal beam and a transverse beam; the center line of the bottom beam is arranged in the range of +/-200 mm of a symmetry axis of the battery box body frame; the bottom beam and the battery box body frame are integrally formed or are formed in a split welding mode.

Optionally, a frame inner side plate is arranged on the inner side of a frame of the battery box body, the bottom of the water cooling plate is fixedly connected with the bottom beam, the side wall of the water cooling plate is fixedly connected with the frame inner side plate, and the connection mode comprises one or a combination of welding and riveting.

Optionally, the water inlet and the water outlet are located on the same side of the water-cooled plate.

Optionally, the buffer layer is one or a combination of an intumescent buffer layer or a honeycomb buffer layer.

Optionally, the inner beam comprises at least one inner cross beam or at least one inner longitudinal beam, and when only one inner beam is provided, the inner beam is provided at a position adjacent to the water inlet and the water outlet.

Optionally, the inner beam is fixed on the symmetry axis of the water-cooled plate, wherein the fixing means includes one or a combination of welding or gluing.

Optionally, both ends of the internal beam are fixedly connected with the frame of the battery box body, wherein the connection mode includes one or a combination of welding connection, rivet connection and screw connection.

As mentioned above, the battery box of the present invention includes a battery box frame; the bottom beam is positioned on the inner side of the battery box body frame and is fixedly connected with the battery box body frame; the water cooling plate is fixed above the bottom beam and comprises a water inlet and a water outlet; the internal beam is positioned above the water cooling plate and is respectively and fixedly connected with the battery box body frame and the water cooling plate, and the internal beam, the water cooling plate and the battery box body frame form a battery accommodating space; the bottom protection plate is arranged below the battery box body frame; the buffer layer, the buffer layer set up in the bottom backplate with between the water-cooling board, through setting up the water-cooling board in the top of battery box bottom roof beam for it can bear the weight of electric core, has promoted the utilization ratio in battery box space, has simplified the box structure, realizes the lightweight of battery box to a certain extent.

Drawings

Fig. 1 shows a schematic structural diagram of the battery box of the present invention.

Fig. 2 shows a schematic diagram of the structure explosion of the battery box of the present invention.

Fig. 3 is a top view of the battery case according to the present invention.

Fig. 4 showsbase:Sub>A cross-sectional view atbase:Sub>A-base:Sub>A in fig. 3.

Fig. 5 is a partially enlarged view of fig. 4 at B.

Fig. 6 shows a schematic view of the frame structure of the battery box of the present invention.

Fig. 7 shows the frame structure diagram of the middle split welded battery box of the present invention.

Drawing scheme identification description

10. Battery box frame

101. Inner side plate of frame

20. Bottom beam

201. Bottom longitudinal beam

202. Bottom cross beam

30. Water-cooling plate

301. Water inlet

302. Water outlet

40. Internal beam

401. Inner longitudinal beam

402. Internal cross member

50. Bottom guard board

60. Buffer layer

Detailed Description

The following description is provided for illustrative purposes, and other advantages and features of the present invention will become apparent to those skilled in the art from the following detailed description.

Please refer to fig. 1 to 7. It should be understood that the structure, proportion, size and the like shown in the drawings attached to the present specification are only used for matching with the content disclosed in the specification, so as to be known and read by those skilled in the art, and are not used for limiting the limit conditions of the present invention, so that the present invention does not have the substantial technical significance, and the modification of any structure, the change of the proportion relation or the adjustment of the size should still fall within the scope of the technical content disclosed in the present invention without affecting the function and the achievable purpose of the present invention. Meanwhile, the terms such as "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for convenience of description, and are not intended to limit the scope of the present invention, and changes or adjustments of the relative relationship thereof may be made without substantial technical changes, and the present invention is also regarded as the scope of the present invention.

For ease of description, spatially relative terms such as "over 8230," "upper surface," "above," and the like may be used herein to describe the spatial positional relationship of one device or feature to other devices or features as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary terms "at 8230; \8230; above" may include both orientations "at 8230; \8230; above" and "at 8230; \8230; below". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

As shown in fig. 1, the utility model provides a battery box, battery box includes:

a battery case frame 10;

the bottom beam 20 is positioned on the inner side of the battery box frame 10, and the bottom beam 20 is fixedly connected with the battery box frame 10;

the water cooling plate 30 is fixed above the bottom beam 20, and the water cooling plate 30 comprises a water inlet 301 and a water outlet 302;

the internal beam 40 is positioned above the water cooling plate 30, and is respectively and fixedly connected with the battery box frame 10 and the water cooling plate 30, and the internal beam 40, the water cooling plate 30 and the battery box frame 10 form a battery accommodating space;

the bottom guard plate 50, the bottom guard plate 50 is arranged below the battery box body frame 10;

a buffer layer 60, wherein the buffer layer 60 is disposed between the bottom guard plate 50 and the water-cooling plate 30.

As shown in fig. 2, the bottom cover 50 is a stamped plate, and the bottom cover 50 is fixedly connected to the battery box frame 10, wherein the connection manner includes one or a combination of welding, riveting or FDS connection.

Specifically, in this embodiment, the bottom protective plate 50 is a stamped plate and is disposed at the bottom of the battery box, and the bottom protective plate 50 is preferably fixed by rivets to the frame 10 of the battery box so as to achieve the stability of the bottom protective plate 50. However, the design of the connection between the bottom cover 50 and the battery case frame 10 is not limited thereto, and may be changed adaptively as needed.

As shown in fig. 2, the bottom beam 20 includes one or a combination of a bottom longitudinal beam 201 and a bottom cross beam 202 as an example; the central line of the bottom beam 20 is arranged in the range of +/-200 mm of the symmetry axis of the battery box body frame 10; the bottom beam 20 and the battery box frame 10 are integrally formed or separately welded.

Specifically, in this embodiment, the bottom beam 20 includes a bottom longitudinal beam 201 and a bottom transverse beam 202, the bottom beam 20 is preferably disposed on the symmetry axis of the battery box frame 10 to enhance the overall strength of the battery box, and the bottom beam 20 and the battery box frame 10 are integrally formed to reduce the assembly process of the battery box, and of course, the forming manner of the bottom beam 20 and the battery box frame 10 may be set according to actual needs, for example, the bottom beam 20 and the battery box frame 10 may be formed by split welding, which is not limited herein.

As shown in fig. 2 to fig. 5, a frame inner side plate 101 is disposed on an inner side of the frame 10 of the battery box body, the bottom of the water cooling plate 30 is fixedly connected to the bottom beam 20, and a side wall of the water cooling plate 30 is fixedly connected to the frame inner side plate 101, wherein the connection manner includes one or a combination of welding and riveting.

Specifically, in this embodiment, a frame inner plate 101 is disposed inside the frame 10 of the battery box to carry the water-cooling plate 30, the bottom of the water-cooling plate 30 is fixed to the bottom beam 20 by riveting, the side wall of the water-cooling plate 30 is fixedly connected to the frame inner plate 101 by riveting, and the bottom and the side wall of the water-cooling plate 30 are fixed by riveting, so that the stability of the battery built in the battery box is increased to a certain extent. Of course, the design of the connection between the water-cooling plate 30 and the battery box frame 10 is not limited thereto, and may be modified adaptively as required.

As shown in fig. 2, the water inlet 301 and the water outlet 302 are located on the same side of the water-cooling plate 30.

Specifically, in this embodiment, the water inlet 301 and the water outlet 302 are disposed on the side wall of the water cooling plate 30, so as to cool the battery inside the battery box and prolong the service life of the battery. The water inlet 301 and the water outlet 302 are preferably disposed on the same side wall of the water cooling plate 30, so as to realize water recycling. Of course, the design of the positions of the water inlet 301 and the water outlet 302 is not limited to this, and can be changed adaptively as required.

As shown in fig. 2, the buffer layer 60 is one or a combination of an intumescent buffer layer and a honeycomb buffer layer.

Specifically, in the present embodiment, an foamed buffer layer is selected as a constituent material of the buffer layer 60, and the buffer layer 60 is disposed between the bottom cover 50 and the water cooling plate 30, so as to absorb an impact force generated during movement, protect the internal battery to a certain extent, and further prolong the service life of the internal battery. Of course, the choice of the material of the buffer layer 60 can be set according to the actual requirement, for example, it can also be a honeycomb-type buffer layer or other materials with equivalent effect, and is not limited herein.

As shown in fig. 2 and 3, the inner beam 40 includes at least one inner cross beam 402 or at least one inner longitudinal beam 401, when only one inner beam 40 is provided, the inner beam 40 is disposed adjacent to the water inlet 301 and the water outlet 302, and the inner beam 40 is fixed on the symmetry axis of the water cooling plate 30, wherein the fixing manner includes one or a combination of welding or gluing.

Specifically, in this embodiment, the inner beam 40 includes an inner cross beam 402 and an inner longitudinal beam 401, the inner cross beam 402 is close to the water inlet 301 and the water outlet 302, the inner longitudinal beam 401 and the inner cross beam 402 are vertically disposed and located on the symmetry axis of the water-cooling plate 30, and the inner cross beam 402, the inner longitudinal beam 401 and the water-cooling plate 30 are fixed by using a welding method, so as to further enhance the overall strength of the battery box. Of course, the design of the inner member 40 and the fixing manner of the inner cross member 402 and the inner side member 401 to the water-cooling panel 30 are not limited thereto, and may be adaptively changed as needed.

As shown in fig. 2, two ends of the internal beam 40 are fixedly connected with the battery box frame 10, wherein the connection mode includes one or a combination of welding connection, rivet connection and screw connection.

Specifically, in this embodiment, the fixing manner of the two ends of the internal beam 40 and the battery box frame 10 is preferably screw-fixed to realize the convenient replacement of the internal beam 40. However, the fixing manner of the inner beam 40 is not limited to this, and may be changed adaptively as needed.

As shown in fig. 6-7, the battery box frame 10 is an integrally formed battery box frame or a separately welded battery box frame.

Specifically, in this embodiment, as shown in fig. 6, the battery box frame 10 is an integrally formed battery box frame, and the integrally formed design can reduce the assembly time and process of each component of the battery box to a certain extent, and improve the manufacturing efficiency of the battery box.

In another embodiment, as shown in fig. 7, the battery box frame 10 is a frame formed by welding a battery box body in a split manner, and since each component of the battery box body is formed and then assembled, each component is more convenient to replace and maintain.

To sum up, the utility model provides a battery box, battery box includes: a battery box frame; the bottom beam is positioned on the inner side of the battery box body frame and is fixedly connected with the battery box body frame; the water cooling plate is fixed above the bottom beam and comprises a water inlet and a water outlet; the internal beam is positioned above the water cooling plate and is respectively and fixedly connected with the battery box body frame and the water cooling plate, and the internal beam, the water cooling plate and the battery box body frame form a battery accommodating space; the bottom protection plate is arranged below the battery box body frame; the buffer layer is arranged between the bottom protective plate and the water cooling plate; replace traditional setting the water-cooling board in the bottom of battery box, will in this application the water-cooling board sets up the top of bottom beam for it has promoted the utilization ratio in battery box space again when can improving battery box overall structure, has both simplified the box structure, and has realized the lightweight of battery box to a certain extent, easily popularizes and applies. Therefore, the utility model effectively overcomes various defects in the prior art and has high industrial utilization value.

The above embodiments are merely illustrative of the principles and effects of the present invention, and are not to be construed as limiting the invention. Modifications and variations can be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which may be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.

Claims

1. The utility model provides a battery box which characterized in that: the battery box at least includes:

a battery box frame;

the bottom protection plate is arranged below the battery box body frame;

2. The battery case according to claim 1, characterized in that: the battery box body frame is an integrally formed battery box body frame or a split welding formed battery box body frame.

3. The battery case according to claim 1, characterized in that: the bottom guard plate is a stamping plate and is fixedly connected with the battery box body frame, wherein the connection mode comprises one or a combination of welding, riveting or FDS connection.

4. The battery case according to claim 1, characterized in that: the bottom beam comprises one or a combination of a bottom longitudinal beam and a bottom cross beam; the central line of the bottom beam is arranged in the range of +/-200 mm of the symmetry axis of the battery box frame; the bottom beam and the battery box body frame are integrally formed or are formed in a split welding mode.

5. The battery case according to claim 1, characterized in that: the battery box body is characterized in that a frame inner side plate is arranged on the inner side of a frame of the battery box body, the bottom of the water cooling plate is fixedly connected with the bottom beam, the side wall of the water cooling plate is fixedly connected with the frame inner side plate, and the connection mode comprises one or combination of welding or riveting.

6. The battery case according to claim 1, characterized in that: the water inlet and the water outlet are positioned on the same side of the water cooling plate.

7. The battery case according to claim 1, characterized in that: the buffer layer is one or a combination of an foaming buffer layer or a honeycomb buffer layer.

8. The battery case according to claim 1, characterized in that: the inner beam comprises at least one inner cross beam or at least one inner longitudinal beam, and when only one inner beam is arranged, the inner beam is arranged at the position close to the water inlet and the water outlet.

9. The battery case according to claim 1, characterized in that: the inner beam is fixed on the symmetry axis of the water-cooling plate, wherein the fixing mode comprises one or the combination of welding or gluing.

10. The battery case according to claim 1, characterized in that: the two ends of the internal beam are fixedly connected with the frame of the battery box body, wherein the connection mode comprises one or a combination of welding connection, rivet connection and screw connection.