CN217691451U

CN217691451U - Air-cooled plug box structure and battery pack thereof

Info

Publication number: CN217691451U
Application number: CN202220998834.6U
Authority: CN
Inventors: 晏梓铭; 邵艳涛; 刘海龙; 郁辰; 刘思; 曹辉; 邵天宇
Original assignee: Shanghai Ruipu Energy Co Ltd
Current assignee: Shanghai Ruipu Energy Co Ltd
Priority date: 2022-04-24
Filing date: 2022-04-24
Publication date: 2022-10-28
Anticipated expiration: 2032-04-24

Abstract

The utility model provides an air-cooled plug box structure and a battery pack thereof, which relate to the technical field of battery heat dissipation, and comprise a lower box body, a battery module, a fan air duct plate, a module support rib and a plug box inner beam, wherein the battery module is respectively arranged on the module support rib; the battery module is built on stilts with module brace rod and subrack inner beam, makes lower box bottom form the bottom wind channel, and the bottom wind channel is linked together with the fan air duct board for the air can flow in the bottom wind channel through the fan air duct board, and the fan air duct board is connected on lower box inner wall. The lower box body of the utility model is provided with the vent holes which are matched with the fan air duct and the fan, thereby playing a role of drainage on the air inlet of the bottom air duct, leading the air speed and the air quantity to be more uniform and strengthening the heat dissipation of the electric core; the module in the plug box is elevated by the cross beam, a bottom air channel is formed between the bottom surface of the module and the bottom plate of the plug box, air channels are formed on three sides of the module in the plug box, so that the heat of the battery cell can be exchanged with cold air on three sides, and the heat dissipation effect of the battery cell is improved.

Description

Air-cooled plug box structure and battery pack thereof

Technical Field

The utility model relates to a battery heat dissipation technical field specifically, relates to forced air cooling subrack structure and battery package thereof.

Background

The heat dissipation of the battery is a big problem existing all along with the development of the battery industry, how to control the temperature of the battery core on the premise of ensuring sufficient charge-discharge multiplying power and capacity is also a subject to be solved urgently in the energy storage field. The common heat dissipation modes in the energy storage industry are mainly wind cooling and liquid cooling. The air cooling is to cool the battery forcibly through air, and the air conditioning and the fan are usually used to blow air to the battery pack to dissipate heat during design. Because cold wind can only blow to the subrack surface, so the radiating effect has certain limitation, needs the fan of more powerful air conditioner and the bigger amount of wind just can satisfy electric core heat dissipation requirement, and this has increased the consumption and the overall cost of system to a certain extent. In addition, in order to meet the requirement of energy density, the size of the plug box is usually limited during design, so that the arrangement in the plug box is often compact, the air duct arrangement space in the plug box is limited, and the heat dissipation requirement is difficult to meet.

The patent document retrieval of the prior art finds that Chinese invention patent publication No. CN213959024U discloses a high-efficiency battery heat dissipation structure for a new energy automobile, belongs to the technical field of new energy automobile battery heat dissipation devices, greatly improves the internal cooling effect, can quickly take away heat generated in the working process of a battery pack by matching with a heat dissipation fan, ensures that the battery pack works in a good temperature environment, and ensures the operation safety. Including base and top cap, the base passes through bolt detachable with the top cap and is connected, constitutes the space that is used for holding the group battery between base and the top cap, the bottom inboard of base is provided with first cooling coil, be provided with radiator fan on the top cap, the top inboard of top cap is provided with second cooling coil, first cooling coil's both ends are provided with first water inlet and first delivery port respectively, and second cooling coil's both ends are provided with second water inlet and second delivery port respectively, first cooling coil's first delivery port passes through the flexonics pipe and is connected with second cooling coil's second water inlet. And the utility model provides an air-cooled subrack structure solves the wind channel and arranges that the space is limited, is difficult to satisfy the problem of heat dissipation demand. Therefore, the method disclosed in the document and the present invention belong to different inventive concepts.

SUMMERY OF THE UTILITY MODEL

To the defect among the prior art, the utility model aims at providing an air-cooled subrack structure and battery package thereof.

According to the utility model provides an air-cooled subrack structure, which comprises a lower box body, a battery module, a fan air duct plate, a module support rib and a subrack inner beam, wherein the battery module is respectively arranged on the module support rib;

the battery module is built on stilts with module brace rod and subrack inner beam, makes lower box bottom form the bottom wind channel, and the bottom wind channel is linked together with the fan air duct board for the air can flow in the bottom wind channel through the fan air duct board, and the fan air duct board is connected on lower box inner wall.

In some embodiments, the air conditioner further comprises a fan, the fan penetrates through the lower box body and is installed on the fan air duct plate, and the fan sucks air from the bottom air duct.

In some embodiments, a gap is provided between two adjacent battery modules.

In some embodiments, the lower case is provided with a vent hole.

In some embodiments, the lower case includes a first side, a second side, a third side, and a fourth side, the second side and the third side are respectively connected to two sides of the first side and the fourth side, the fourth side is opposite to the first side, and the second side, the third side, and the fourth side are provided with vent holes.

In some embodiments, the inner beams of the plug box are provided with fixing holes corresponding to the vent holes on the fourth side.

In some embodiments, the top of the battery module is provided with a fireproof pad, and the bottom of the battery module is provided with a PC sheet plate.

In some embodiments, the fan further comprises a battery management device and a wire holder, the battery management device and the wire holder are respectively connected to the lower box body, the battery management device and the wire holder are respectively located on two sides of the fan, and the battery management device is connected with the battery module.

In some embodiments, the box further comprises an upper cover, and the upper cover is in fit connection with the lower box body.

The utility model also provides a battery package, including the forced air cooling subrack structure.

Compared with the prior art, the utility model discloses following beneficial effect has:

(1) The lower box body of the utility model is provided with a ventilation hole, and the ventilation hole is matched with a fan to draw air so as to directly enter cold air into the battery pack to cool the battery core and strengthen the heat dissipation of the battery core;

(2) The utility model discloses with the crossbeam with module height in the subrack, make the module bottom surface and subrack bottom plate within a definite time form the bottom wind channel, module trilateral all has the wind channel in the subrack, make electric core trilateral can both with the cold wind heat transfer, promote electric core radiating effect;

(3) The utility model discloses a fan wind channel corresponds the position trompil at bottom wind channel mouth, plays the drainage effect to bottom wind channel air inlet, makes wind speed and the amount of wind more even.

Drawings

Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:

FIG. 1 is an exploded view of the present invention;

FIG. 2 is a schematic view of the overall structure of the present invention;

fig. 3 is a rear view of the present invention;

FIG. 4 is a schematic view of the bottom air duct structure of the present invention;

fig. 5 is a schematic view of the inner beam of the plug-in box of the present invention.

Reference numbers in the figures:

the solar battery box comprises an upper cover 1, a lower box body 2, a battery management device 3, a fan 4, a wire holder 5, a fireproof pad 6, a battery module 7, a fan air duct plate 8, a PC sheet plate 9, module support ribs 10, a plug box inner beam 11 and a bottom air duct 12.

Detailed Description

The present invention will be described in detail with reference to specific embodiments. The following examples will assist those skilled in the art in further understanding the present invention, but are not intended to limit the invention in any way. It should be noted that various changes and modifications can be made by one skilled in the art without departing from the spirit of the invention. These all belong to the protection scope of the present invention.

Example 1

The utility model provides a pair of air-cooled subrack structure, as shown in fig. 1-5, including upper cover 1, lower box 2, battery management device 3, fan 4, connection terminal 5, fire prevention pad 6, battery module 7, fan air duct board 8, PC board 9, module brace rod 10, subrack inner beam 11 and bottom wind channel 12. The upper cover 1 is fixed on the top of the lower box body 2 matched with the upper cover through bolts, and the battery management device 3, the wire holder 5, the fireproof pad 6, the battery module 7, the fan air duct plate 8, the PC sheet plate 9, the module support rib 10, the inner beam 11 of the plug box and the bottom air duct 12 are fixed inside the box body. The lower box body 2 comprises a first side portion, a second side portion, a third side portion and a fourth side portion, the second side portion and the third side portion are respectively connected to two side edges of the first side portion and the fourth side portion, the fourth side portion is opposite to the first side edge, and vent holes are formed in the second side portion, the third side portion and the fourth side portion. The number, size, shape and position of the vent holes of the second side portion and the third side portion can be adjusted according to the actual temperature and heat dissipation condition of the battery cell. The shape of the vent hole on the fourth side is adjusted according to the shape of the air duct in the battery pack.

As shown in fig. 1 and 5, the module support ribs 10 are uniformly distributed, two ends of the module support ribs 10 are respectively connected with the inner beam 11 of the plug box and the fan duct board 8, and the three are connected by fixing methods such as bolts or welding. The inner beam 11 of the inserting box is fixed on the inner wall of the fourth side part of the lower box body 2 through bolts. As shown in fig. 3, the inner beam 11 of the subrack is provided with a fixing hole corresponding to the vent hole on the fourth side, so that the inner beam 11 of the subrack strengthens the overall structure of the subrack and optimizes the air supply of the air duct at the bottom of the subrack. The shape of the fixing hole is determined as the case may be, and in the present embodiment, a long waist hole is used as the fixing hole.

Two battery modules 7 are placed respectively on module brace rod 10, and are equipped with PC board 9 between battery module 7 and the module brace rod 10, make battery module 7 bottom overhead, and leave the space between two battery modules 7, lower box 2 bottom forms bottom wind channel 12, makes the both sides face homoenergetic of electric core and cold wind emergence heat exchange, has increased the heat dissipation of electric core bottom, helps the holistic temperature control of electric core, as shown in fig. 4. The fan 4 is fixed on the fan air duct plate 8 by passing through the first side part through bolts, and the fan air duct plate 8 is fixed on the inner wall of the first side part through bolts or welding. The fan 4 operates in an air draft mode, and air which becomes hot after the electric core is cooled in the plug box is pumped out of the plug box, and meanwhile cold air is pumped into the plug box to complete cold and hot air replacement. The battery management device 3 and the wire holder 5 are respectively arranged on the outer wall of the first side portion, the battery management device 3 and the wire holder 5 are respectively located on two sides of the fan 4, and the battery management device 3 is connected with the battery module 7. The fireproof pad 6 is arranged between the upper cover 1 and the battery module 7 to avoid the occurrence of heat spreading when the plug box is overheated or even on fire.

Example 2

In the description of the present application, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present application.

The foregoing description of the specific embodiments of the invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes or modifications may be made by those skilled in the art within the scope of the appended claims without departing from the spirit of the invention. The embodiments and features of the embodiments of the present application may be combined with each other arbitrarily without conflict.

Claims

1. An air-cooled subrack structure is characterized by comprising a lower box body (2), battery modules (7), a fan air duct plate (8), module support ribs (10) and a subrack inner beam (11), wherein the battery modules (7) are respectively arranged on the module support ribs (10), the module support ribs (10) and the subrack inner beam (11) are respectively connected into the lower box body (2), and the module support ribs (10) are connected onto the subrack inner beam (11);

the battery module (7) is overhead through the module support ribs (10) and the plug box inner beam (11), so that a bottom air channel (12) is formed at the bottom of the lower box body (2), the bottom air channel (12) is communicated with the fan air channel plate (8), air can flow into the bottom air channel (12) through the fan air channel plate (8), and the fan air channel plate (8) is connected to the inner wall of the lower box body (2).

2. The air-cooled box insert structure according to claim 1, further comprising a fan (4), wherein the fan (4) is installed on the fan air duct plate (8) through the lower box body (2), and the fan (4) draws air from the bottom air duct (12).

3. The air-cooled plug box structure according to claim 2, wherein a gap is formed between two adjacent battery modules (7).

4. An air-cooled box structure according to claim 1 or 3, characterized in that the lower box (2) is provided with ventilation holes.

5. The air-cooled box structure according to claim 4, wherein the lower box (2) includes a first side, a second side, a third side and a fourth side, the second side and the third side are connected to two sides of the first side and the fourth side, respectively, the fourth side is opposite to the first side, and the second side, the third side and the fourth side are provided with vent holes.

6. An air-cooled box structure according to claim 5, characterized in that the box inner beam (11) is provided with fixing holes corresponding to the ventilation holes on the fourth side.

7. The air-cooled subrack structure according to claim 1, characterized in that the top of the battery module (7) is provided with a fireproof pad (6), and the bottom of the battery module (7) is provided with a PC sheet plate (9).

8. The air-cooled plug box structure according to claim 2, further comprising a battery management device (3) and a wire holder (5), wherein the battery management device (3) and the wire holder (5) are respectively connected to the lower box body (2), the battery management device (3) and the wire holder (5) are respectively located on two sides of the fan (4), and the battery management device (3) is connected with the battery module (7).

9. The air-cooled plug box structure of claim 1, further comprising an upper cover (1), wherein the upper cover (1) is in adaptive connection with the lower box body (2).

10. A battery pack comprising the air-cooled box structure of any one of claims 1-9.