CN220341308U - Battery pack - Google Patents

Abstract

The utility model provides a battery pack, which comprises a battery box cover, a bottom plate and a battery cell module, wherein the battery box cover and the battery cell module are connected to the bottom plate, and the battery cell module is covered in the battery box cover; the inside of the bottom plate is provided with flow channels, and fins with the same trend as the flow channels are uniformly distributed in the flow channels; the bottom plate is provided with a liquid inlet communicated with one end of the flow channel and a liquid outlet communicated with the other end of the flow channel. In the structure of the utility model, the cooling flow channel is arranged in the bottom plate of the battery pack, and the bottom plate can be used as a liquid cooling plate by directly introducing cooling liquid, so that the cooling of the battery pack internal battery cell module is carried out without additionally arranging the liquid cooling plate, thereby not only increasing the installable space of the battery pack internal battery cell module, but also reducing the use cost of the whole battery pack; the popularization and application have good economic benefit and social benefit.

Description

Battery pack

Technical Field

The utility model belongs to the technical field of batteries, and particularly relates to a battery pack.

Background

The early structure of the battery pack is that the battery cells are assembled into a module, and then the module is installed in the battery pack, so that a three-level assembly mode of 'battery cells-module-battery pack' is formed, and along with the increase of the number of the battery cells in the battery pack, the heat dissipation requirement on the battery pack is higher and higher.

The traditional scheme adopts the box to increase liquid cooling board or aluminium alloy box and welds to form, although increased the heat dissipation function of battery package, its heat radiation structure has increased occupation scope, leads to whole volume to the manufacturing process is complicated, the cycle is long, the cost is higher.

How to design a battery pack and how to reduce the use cost becomes a problem to be solved urgently.

Disclosure of Invention

In view of the above-mentioned drawbacks of the prior art, an object of the present utility model is to provide a battery pack for solving the problem of high use cost of the battery pack in the prior art.

In order to achieve the above purpose, the utility model provides a battery pack, which comprises a battery box cover, a bottom plate and a battery cell module, wherein the battery box cover and the battery cell module are connected to the bottom plate, and the battery cell module is covered in the battery box cover;

the inside of the bottom plate is provided with flow channels, and fins with the same trend as the flow channels are uniformly distributed in the flow channels;

the bottom plate is provided with a liquid inlet communicated with one end of the flow channel and a liquid outlet communicated with the other end of the flow channel.

By adopting the technical scheme: the inside at the bottom plate sets up the runner, sets up the fin in the inside of runner, leads to the inside coolant liquid of runner by the inlet and can make the bottom plate possess the function of liquid cooling after the fin disperses to can realize installing the direct cooling of electric core module on the bottom plate, need not establish the liquid cooling board in addition and carry out temperature control, both guaranteed the installation space of battery package inside electric core module, reduced the holistic use cost of battery package again.

In an embodiment of the utility model, the front end of the battery box cover is connected with an output plug-in unit and an access hole, wherein a fuse is connected in series on a connecting circuit of the output plug-in unit and the battery cell module, the fuse is fixed on the bottom plate, and the fuse is positioned on the inner side of the battery box cover;

by adopting the technical scheme: an output plug-in is additionally arranged to facilitate the export and use of the electric quantity of the battery cell module in the battery pack; a fuse is arranged for overload protection, so that damage to an electric core module in the battery pack caused by overlarge current is avoided; and the maintenance hole is arranged to facilitate the later maintenance of the internal components of the battery box cover.

In an embodiment of the utility model, a module fixing block is installed on the top of the bottom plate, and the module fixing block is located on the inner side of the battery case cover;

by adopting the technical scheme: the cell module is installed and positioned by additionally arranging the module fixing block, and the installation connection position of the cell module is provided.

In an embodiment of the utility model, the liquid inlet and the liquid outlet are arranged on the same side of the bottom plate, and the liquid inlet and the liquid outlet are positioned on the outer side of the battery box cover;

by adopting the technical scheme: the liquid inlet and the liquid outlet are conveniently connected with the corresponding pipelines, and meanwhile, the liquid inlet and the liquid outlet are centralized, so that the problem of unnecessary occupation space increase is avoided.

In an embodiment of the utility model, the bottom plate comprises a bottom plate and a heat exchange panel, wherein the heat exchange panel is fixedly connected to the bottom plate in a fitting way and is matched with a groove formed in the bottom plate;

by adopting the technical scheme: the difficulty in forming the flow channel is reduced by arranging the bottom plate into the two layers of the supporting plate and the heat exchange panel, so that the manufacturing difficulty and the cost of the bottom plate are reduced.

In one embodiment of the present utility model, the cross section of the fin is S-shaped;

by adopting the technical scheme: the cross section of the fin is S-shaped, so that the corresponding supporting effect can be provided while the conduction of cooling liquid is not influenced, and the stability of the bottom plate structure is improved.

Advantageous effects

In the structure of the utility model, the cooling flow channel is arranged in the bottom plate of the battery pack, and the bottom plate can be used as a liquid cooling plate by directly introducing cooling liquid, so that the cooling of the battery pack internal battery cell module is carried out without additionally arranging the liquid cooling plate, thereby not only increasing the installable space of the battery pack internal battery cell module, but also reducing the use cost of the whole battery pack; the popularization and application have good economic benefit and social benefit.

Drawings

Fig. 1 is a perspective exploded view of the present utility model.

Fig. 2 is a perspective exploded view of the floor of the present utility model.

In the figure: 1. a battery case cover; 2. a bottom plate; 21. a bottom support plate; 22. a heat exchange panel; 23. a flow passage; 24. a fin; 25. a liquid inlet; 26. a liquid outlet; 27. a module fixing block; 3. a battery cell module; 4. an output plug-in; 5. an access opening; 6. and a fuse.

Detailed Description

Further advantages and effects of the present utility model will become apparent to those skilled in the art from the disclosure of the present utility model, which is described by the following specific examples.

Please refer to fig. 1-2. It should be understood that the structures, proportions, sizes, etc. shown in the drawings are for illustration purposes only and should not be construed as limiting the utility model to the extent that it can be practiced, since modifications, changes in the proportions, or otherwise, used in the practice of the utility model, are not intended to be critical to the essential characteristics of the utility model, but are intended to fall within the spirit and scope of the utility model. Also, the terms such as "upper," "lower," "left," "right," "middle," and "a" and the like recited in the present specification are merely for descriptive purposes and are not intended to limit the scope of the utility model, but are intended to provide relative positional changes or modifications without materially altering the technical context in which the utility model may be practiced.

As shown in fig. 1-2, the utility model provides a battery pack, which comprises a battery case cover 1, a bottom plate 2 and a battery cell module 3, wherein the battery case cover 1 and the battery cell module 3 are connected to the bottom plate 2, and the battery cell module 3 is covered in the battery case cover 1; the inside of the bottom plate 2 is provided with flow channels 23, and fins 24 with the same trend as the flow channels 23 are uniformly distributed and arranged in the flow channels 23; the bottom plate 2 is provided with a liquid inlet 25 communicated with one end of the flow channel 23 and a liquid outlet 26 communicated with the other end of the flow channel 23; the flow channel 23 is arranged in the bottom plate 2, the fins 24 are arranged in the flow channel 23, and the cooling liquid led to the inside of the flow channel 23 by the liquid inlet 25 can enable the bottom plate 2 to have the function of liquid cooling after being dispersed by the fins 24, so that the direct cooling of the cell module 3 arranged on the bottom plate 2 can be realized, and a liquid cooling plate is not required to be additionally arranged for temperature control, thereby not only ensuring the installation space of the cell module 3 in the battery pack, but also reducing the overall use cost of the battery pack.

Further, a module fixing block 27 is mounted on the top of the bottom plate 2, and the module fixing block 27 is located on the inner side of the battery case cover 1; the battery cell module 3 is installed and positioned by additionally arranging the module fixing block 27, and the installation connection position of the battery cell module 3 is provided.

Further, the bottom plate 2 comprises a bottom plate 21 and a heat exchange panel 22, wherein the heat exchange panel 22 is fixedly connected to the bottom plate 21 in a fitting way and is matched with a groove forming flow channel 23 formed in the bottom plate 21; the difficulty in forming the flow channels 23 is reduced by arranging the bottom plate 2 as two layers of the supporting plate 21 and the heat exchange panel 22, thereby reducing the manufacturing difficulty and cost of the bottom plate 2.

In the specific implementation, the cell module 3 and the module fixing block 27 are positioned and fixed to finish the installation of the cell module on the bottom plate 2, and then the battery box cover 1 is connected to the bottom plate 2 so that the cell module 3 is covered in the battery box cover 1 to finish the installation operation of the battery pack; when the cell module 3 is used, the cooling liquid is introduced into the runner 23 in the bottom plate 2 through the liquid inlet 25, and the cooling liquid is shunted by the fins 24 to reduce the surface temperature of the bottom plate 2 so as to exchange heat with the cell module 3, so that the temperature of the cell module 3 is reduced, and the cooling liquid after heat exchange is led out through the liquid outlet 26, so that the circulation is realized, and the cell module 3 is maintained to operate for a long time under a proper temperature state.

In summary, the present utility model provides a battery pack, in which the cooling flow channel 23 is disposed inside the bottom plate 2 of the battery pack, so that the bottom plate 2 can be used as a liquid cooling plate by directly introducing cooling liquid, and the cooling of the battery pack inner battery cell module 3 is not performed by additionally providing the liquid cooling plate, so that the installable space of the battery pack inner battery cell module 3 is increased, and the overall use cost of the battery pack is reduced; the popularization and application have good economic benefit and social benefit. 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 of the present utility model and its effectiveness, and are not intended to limit the utility model. Modifications and variations may be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the utility model. Accordingly, it is intended that all equivalent modifications and variations of the utility model be covered by the claims, which are within the ordinary skill of the art, be within the spirit and scope of the present disclosure.

Claims (6)

1. The utility model provides a battery package, includes battery case lid (1), bottom plate (2) and electric mandrel group (3), its characterized in that: the battery box cover (1) and the battery cell module (3) are connected to the bottom plate (2), and the battery cell module (3) is covered in the battery box cover (1);

the inside of the bottom plate (2) is provided with a runner (23), and fins (24) with the same trend as the runner (23) are uniformly distributed in the runner (23);

the bottom plate (2) is provided with a liquid inlet (25) communicated with one end of the flow channel (23) and a liquid outlet (26) communicated with the other end of the flow channel (23).

2. A battery pack according to claim 1, wherein: the front end of battery case lid (1) is connected with output plug-in components (4) and access hole (5), wherein output plug-in components (4) are established ties on the connecting wire of electric mandrel group (3) and are had fuse (6), fuse (6) are fixed on bottom plate (2), and fuse (6) are located the inboard of battery case lid (1).

3. A battery pack according to claim 1, wherein: the top of the bottom plate (2) is provided with a module fixing block (27), and the module fixing block (27) is positioned on the inner side of the battery box cover (1).

4. A battery pack according to claim 1, wherein: the liquid inlet (25) and the liquid outlet (26) are arranged on the same side of the bottom plate (2), and the liquid inlet (25) and the liquid outlet (26) are positioned on the outer side of the battery box cover (1).

5. A battery pack according to claim 1, wherein: the bottom plate (2) comprises a bottom plate (21) and a heat exchange panel (22), wherein the heat exchange panel (22) is fixedly connected to the bottom plate (21) in a fitting mode and is matched with a groove forming flow channel (23) formed in the bottom plate (21).

6. A battery pack according to claim 1, wherein: the cross section of the fin (24) is S-shaped.