CN219534673U

CN219534673U - Battery pack box, battery pack and vehicle

Info

Publication number: CN219534673U
Application number: CN202320553944.6U
Authority: CN
Inventors: 胡来文; 胡仁德; 谢堃; 陶玉鹏
Original assignee: Chery New Energy Automobile Co Ltd
Current assignee: Chery New Energy Automobile Co Ltd
Priority date: 2023-03-16
Filing date: 2023-03-16
Publication date: 2023-08-15
Anticipated expiration: 2033-03-16

Abstract

The utility model discloses a battery pack box, a battery pack and a vehicle, comprising: tray, top cap and guard plate; the top cover is arranged at the top of the tray, the condensation preventing plate is stuck to one side of the top cover facing the inside of the tray, the protection plate is arranged at the bottom of the tray, and the heat preservation layers are arranged on the outer walls of the tray, the top cover and the bottom plate. The problem that the temperature of the battery pack is unstable due to the change of the external environment temperature in the use process of the battery pack is solved, the temperature of the battery module is effectively maintained constant, and the functions of heat preservation, heat insulation and condensation prevention are realized for the battery module.

Description

Battery pack box, battery pack and vehicle

Technical Field

The utility model relates to the technical field of power batteries of new energy electric automobiles, in particular to a battery pack box body, a battery pack and a vehicle.

Background

The statements in this section merely provide background information related to the present disclosure and may not necessarily constitute prior art.

At present, a lithium ion battery is basically adopted as a new energy electric automobile power battery, and the temperature of the lithium ion battery is optimally kept within the range of 20-30 ℃ and is more comfortable within the range of 0-45 ℃ as well known.

If the battery pack loses temperature too fast, the problems of charge analysis and discharge power reduction easily occur when the battery is at a lower temperature, and if the battery is at a higher temperature, the problem of rapid reduction of the cycle life occurs.

In addition, a large number of electronic components and high-voltage connecting pieces exist in the power battery, when the temperature fluctuates greatly, the condensation phenomenon is very easy to occur in the battery pack, and the short circuit of the battery pack can be caused by the dripping of condensation water. For example, in areas where the temperature is high and the humidity is low, the condensation phenomenon is easily generated inside the battery pack.

Disclosure of Invention

In order to solve the problems, the utility model provides a battery pack box, a battery pack and a vehicle, which solve the problem that the temperature of the battery pack is unstable due to the change of the external environment temperature in the use process of the battery pack, effectively maintain the constant temperature of a battery module, and realize the functions of heat preservation, heat insulation and condensation prevention for the battery module.

In order to achieve the above purpose, the present utility model adopts the following technical scheme:

in a first aspect, the present utility model provides a battery pack case comprising: tray, top cap and guard plate; the top cover is arranged at the top of the tray, the condensation preventing plate is stuck to one side of the top cover facing the inside of the tray, the protection plate is arranged at the bottom of the tray, and the heat preservation layers are arranged on the outer walls of the tray, the top cover and the bottom plate.

As an alternative embodiment, a receiving cavity for receiving the battery module is provided in the tray.

As an alternative embodiment, the anti-condensation plate is adhered to the top cover through structural adhesive; the heat preservation is pasted on tray, top cap and guard plate through the sticky mode.

Alternatively, the top cover is fixed on the top of the tray through a first connecting piece; the protection plate is fixed at the bottom of the tray through a second connecting piece.

As an alternative embodiment, the top cover is fixed on the top of the tray in a bolt connection manner; the protection plate is fixed at the bottom of the tray in a bolt connection mode.

As an alternative embodiment, the top cover is provided with bolt holes at least at four corners, and the protection plate is provided with bolt holes at least at four corners so as to be fixed at the top and bottom of the tray through a bolt connection mode.

As an alternative embodiment, the heat-insulating layer is made of heat-insulating cotton.

As an alternative embodiment, the cavity at the side beam section bar mounting surface on the tray is blocked by adopting a caulking structural adhesive.

In a second aspect, the present utility model provides a battery pack comprising: the battery pack box body of battery module and first aspect, the battery module is located in the tray of battery pack box body.

In a third aspect, the present utility model provides a vehicle comprising: the battery pack of the second aspect.

Compared with the prior art, the utility model has the beneficial effects that:

the utility model provides a battery pack box body, a battery pack and a vehicle, wherein heat insulation layers are arranged on six sides of the box body, so that the heat dissipation of the battery pack is reduced when the battery pack box body is in an environment with low external temperature, the external heat is effectively isolated from entering the battery pack when the battery pack box body is in an environment with high external temperature, the battery temperature is prevented from being rapidly increased, the heat insulation function of the battery module is realized, the temperature of the battery module is effectively maintained constant, the influence of the external environment temperature on the battery module is slowed down, and the stable performance of the performance and the service life of the battery module are facilitated.

The utility model provides a battery pack box body, a battery pack and a vehicle, wherein heat preservation layers can be adhered to six sides of the box body in an adhesive mode, so that seamless adhesion with the heat preservation layers is realized, the heat insulation and heat preservation effects are enhanced, and the buffer effect is realized during collision.

The utility model provides a battery pack box, a battery pack and a vehicle, wherein a low-heat-conductivity composite material anti-condensation plate is adhered to the inner side of a top cover, and the anti-condensation plate is combined to effectively control the temperature of the battery pack, so that the phenomenon of condensation is effectively avoided, the risk of internal short circuit and fire of the battery pack is reduced, and the safety of the battery pack is improved.

The utility model provides a battery pack box, a battery pack and a vehicle, wherein a condensation prevention plate is made of a composite material with low heat conductivity, so that condensation water in the battery pack is prevented from dripping on an electric device and causing short circuit, the composite material can play an insulating role, and the safety of the battery pack is improved.

The utility model provides a battery pack box body, a battery pack and a vehicle, wherein a cavity at the installation surface of an edge beam section on a tray is plugged by adopting joint filling structural adhesive, so that heat is prevented from being taken away due to the fact that air flows from the cavity.

Additional aspects of the utility model will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the utility model.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model.

Fig. 1 is a diagram showing the overall structure of a battery pack case according to embodiment 1 of the present utility model;

fig. 2 is an exploded view of a battery pack case according to embodiment 1 of the present utility model;

1, a first connecting piece; 2. a first heat-retaining layer; 3. a top cover; 4. an anti-condensation plate; 5. a second heat-insulating layer; 6. a battery module; 7. a tray; 8. a third heat-insulating layer; 9. a fourth heat-insulating layer; 10. a protection plate; 11. a fifth heat-insulating layer; 12. a second connector; 13. and (5) filling the structural adhesive.

Detailed Description

The utility model is further described below with reference to the drawings and examples.

It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the utility model. 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 utility model belongs.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present utility model. As used herein, unless the context clearly indicates otherwise, the singular forms also are intended to include the plural forms, and furthermore, it is to be understood that the terms "comprises" and "comprising" and any variations thereof are intended to cover non-exclusive inclusions, such as, for example, processes, methods, systems, products or devices that comprise a series of steps or units, are not necessarily limited to those steps or units that are expressly listed, but may include other steps or units that are not expressly listed or inherent to such processes, methods, products or devices.

Embodiments of the utility model and features of the embodiments may be combined with each other without conflict.

Example 1

As shown in fig. 1-2, the present embodiment provides a battery pack case, including: a tray 7, a top cover 3 and a protection plate 10; the top cap 3 is located tray 7 top, and the top cap 3 pastes the anti-condensation board 4 towards the inside one side of tray 7, tray 7 bottom is located to guard plate 10, all establishes the heat preservation on the outer wall of tray 7, top cap 3 and bottom plate 10.

In this embodiment, the tray 7 is internally provided with a receiving cavity for receiving the battery module 6, and the condensation preventing plate 4 is stuck on the side of the top cover 3 facing the receiving cavity to prevent condensation from dripping.

Alternatively, the anti-condensation plate 4 is made of a sheet material, and the size of the anti-condensation plate is consistent with that of the top cover 3.

As an alternative embodiment, the anti-condensation plate 4 is glued to the top cover 3 by means of a structural adhesive.

As an alternative embodiment, the anti-condensation plate 4 may be further fixed to the top cover 3 by a mechanical connection structure, such as threads, a fastening, etc., which is specifically set according to the need, but is not limited to this embodiment.

As an alternative implementation manner, the anti-condensation plate 4 is made of a composite material with low thermal conductivity, so that condensation water in the battery pack is prevented from dripping on an electric device and causing short circuit, and the composite material can also play an insulating role, so that the safety of the battery pack is improved.

It can be understood that the material of the anti-condensation plate 4 is only required to be selected from existing products, and only has the function of suppressing the generation of mist and condensation, and is not limited herein.

In this embodiment, the top cover 3 is fixed on top of the tray 7 by the first connector 1.

As an alternative embodiment, the top cover 3 is fastened to the top of the tray 7 by means of a screw connection.

As an alternative embodiment, the top cover 3 is provided with bolt holes at least at four corners to be fastened to the top of the tray 7 by bolting.

In this embodiment, the protection plate 10 is fixed to the bottom of the tray 7 by a second connector 12.

As an alternative embodiment, the protection plate 10 is fixed to the bottom of the tray 7 by means of bolting.

As an alternative embodiment, the protection plate 10 is provided with bolt holes at least at four corners to be fixed to the bottom of the tray 7 by bolting.

In this embodiment, the heat-insulating layer is stuck on the surfaces of the tray 7, the top cover 3 and the protection plate 10 in an adhesive manner, so as to achieve seamless fit with the heat-insulating layer, enhance the heat-insulating effect, and buffer the impact.

Of course, in other embodiments, the tray 7, the top cover 3, the protection plate 10 and the insulation layer may be fixed by mechanical connection structures, such as threads, clamping, etc., and specifically, the embodiment is not limited thereto.

As an alternative implementation mode, insulating material is adopted in the heat preservation layer for to locate the battery module in the tray and realize heat preservation, thermal-insulated and insulating function, effectively maintain battery module's temperature invariable, slow down the influence of external environment temperature to battery module, help the performance and the stable performance of life-span of battery module.

As an alternative implementation mode, the heat-insulating layer adopts heat-insulating cotton, so that the heat-insulating layer not only can enhance the heat-insulating effect, but also can play a role in buffering during collision; meanwhile, compared with a metal material, the heat-insulating cotton reduces the heat conductivity coefficient of the battery pack, so that the influence of the external environment temperature on the battery module is further slowed down.

Of course, in other embodiments, the heat-insulating layer may be designed as another material layer with insulation and heat-insulating functions, which is specifically set according to the needs, and is not limited to the present embodiment.

It will be appreciated that the shape and size of the first insulating layer 2 provided on the top cover 3 are matched with the top cover, the shape and size of the fifth insulating layer 11 provided on the protection plate 10 are matched with the protection plate, the shape and size of the fourth insulating layer 9 and the second insulating layer 5 provided on the front and rear sides of the tray 7, and the shape and size of the third insulating layer 8 provided on the left and right sides are matched with the shape and size of the periphery of the tray.

In the embodiment, the caulking structure adhesive 13 is adopted to seal the die cavity at the side beam section bar mounting surface on the tray 7, so that heat is prevented from being taken away due to the air flowing from the die cavity.

In this embodiment, the method for assembling the battery pack case includes:

(1) The second heat preservation layer 5 is adhered to the rear side surface of the tray 7, the fourth heat preservation layer 9 is adhered to the front side surface of the tray 7, and the third heat preservation layer 8 is adhered to the left and right side surfaces of the tray 7;

(2) Sealing the cavity at the side beam section bar mounting surface on the tray 7 by adopting a gap filling structural adhesive 13;

(3) The anti-condensation plate 4 is stuck to the top cover 3, and after a battery module is arranged in the accommodating cavity of the tray 7, the top cover 3 stuck with the anti-condensation plate 4 is fixed to the top of the tray 7 in a bolt connection mode;

(4) Fixing the shielding plate 10 to the bottom of the tray 7 by bolting;

(5) The first heat-insulating layer 2 is adhered to the top cover 3, and the fifth heat-insulating layer 11 is adhered to the shielding plate 10.

Example 2

The embodiment provides a battery pack, includes battery module and embodiment 1 the battery pack box, the battery module is located in the tray of battery pack box, and the battery pack box can play thermal-insulated and the effect of preventing the condensation.

Example 3

The present embodiment provides a vehicle including the battery pack of embodiment 2.

While the foregoing description of the embodiments of the present utility model has been presented in conjunction with the drawings, it should be understood that it is not intended to limit the scope of the utility model, but rather, it is intended to cover all modifications or variations within the scope of the utility model as defined by the claims of the present utility model.

Claims

1. A battery pack case, comprising: tray, top cap and guard plate; the top cover is arranged at the top of the tray, the condensation preventing plate is stuck to one side of the top cover facing the inside of the tray, the protection plate is arranged at the bottom of the tray, and the heat preservation layers are arranged on the outer walls of the tray, the top cover and the bottom plate.

2. A battery pack case as set forth in claim 1, wherein,

and a containing cavity for containing the battery module is arranged in the tray.

3. A battery pack case as set forth in claim 1, wherein,

the condensation preventing plate is stuck on the top cover through structural adhesive;

the heat preservation is pasted on tray, top cap and guard plate through the sticky mode.

4. A battery pack case as set forth in claim 1, wherein,

the top cover is fixed at the top of the tray through a first connecting piece;

the protection plate is fixed at the bottom of the tray through a second connecting piece.

5. A battery pack case as set forth in claim 4, wherein,

the top cover is fixed at the top of the tray in a bolt connection mode;

the protection plate is fixed at the bottom of the tray in a bolt connection mode.

6. A battery pack case as set forth in claim 5, wherein,

the top cover is provided with bolt holes at least at four corners, and the protection plate is provided with bolt holes at least at four corners so as to be fixed at the top and the bottom of the tray in a bolt connection mode.

7. A battery pack case as set forth in claim 1, wherein,

the heat preservation layer adopts heat preservation cotton.

8. A battery pack case as set forth in claim 1, wherein,

and sealing the cavity at the side beam section bar mounting surface on the tray by adopting the joint filling structural adhesive.

9. A battery pack, comprising a battery module and the battery pack case according to any one of claims 1 to 8, wherein the battery module is disposed in a tray of the battery pack case.

10. A vehicle comprising the battery pack of claim 9.