CN111834559A

CN111834559A - Battery system bottom shell for electric automobile

Info

Publication number: CN111834559A
Application number: CN201910250814.3A
Authority: CN
Inventors: 胡令金
Original assignee: Suzhou Yihang New Material Technology Co ltd
Current assignee: Suzhou Yihang New Material Technology Co ltd
Priority date: 2019-03-29
Filing date: 2019-03-29
Publication date: 2020-10-27

Abstract

The application discloses battery system drain pan for electric automobile, the preparation material of drain pan is the carbon fiber, the drain pan includes drain pan body and a plurality of crossbeam, the drain pan body includes the bottom plate and sets up the bounding wall at bottom plate edge, a plurality of crossbeams set up on the bottom plate, be provided with the installation component on the crossbeam. In the embodiment of the application, the drain pan plays the effect of fixed battery module and protection battery module, the drain pan adopts carbon fiber material preparation to form, when satisfying structural strength, reduces battery system's quality, reaches the effect that improves energy density, and then increases the continuous mileage of electric automobile, and simultaneously in production drain pan process, can effectual reduction to the pollution of environment.

Description

Battery system bottom shell for electric automobile

Technical Field

The application relates to the technical field of battery systems, in particular to a battery system bottom shell for an electric automobile.

Background

In the modern society, with the continuous improvement of the living standard of people, the demand of automobiles is more and more increased. Because the conventional automobile is mainly powered by petroleum products, the petroleum products generate a large amount of waste gas when being used, and the environmental pollution is becoming serious. In addition, petroleum products are increasingly in short supply during their continuous consumption. Furthermore, manufacturing a new energy automobile to replace the traditional automobile becomes a development target of all automobile enterprises.

The new energy automobile can be divided into a pure electric automobile and a hybrid electric automobile, but no matter which one is used, the power battery can not be used for providing power. The power battery as an energy source needs to increase energy and voltage in a serial or parallel mode in the use process due to the characteristics of the power battery.

However, the existing power battery has large mass, the whole mass of the electric automobile is increased, the energy consumption of the power automobile per kilometer is increased, and finally the driving range is reduced.

Disclosure of Invention

The utility model provides an aim at provides a battery system drain pan for electric automobile to solve the big problem of power battery quality.

The application provides a battery system drain pan for electric automobile, the preparation material of drain pan is the carbon fiber, the drain pan includes drain pan body and a plurality of crossbeam, the drain pan body includes the bottom plate and sets up the bounding wall at bottom plate edge, a plurality of crossbeams set up on the bottom plate, be provided with the installing component on the crossbeam.

In some embodiments, the mounting member includes a nut and a hidden nut layer; be provided with the recess on the crossbeam, the inside embedding nut of recess the upper surface of nut covers there is hidden nut layer, hide the upper surface on nut layer with the upper surface of crossbeam is on the coplanar.

In some embodiments, the blind nut layer is provided with an aperture that is the same diameter as the nut hole.

In some embodiments, the plurality of cross beams are parallel to each other.

In some embodiments, a locking strip is arranged on one side of the upper end of the enclosing plate far away from the cross beam.

In some embodiments, a sealing strip is disposed on the locking strip.

In some embodiments, the number of mounting members is several.

In some embodiments, the material of the hidden nut layer is carbon fiber.

According to the technical scheme, the application provides a battery system drain pan for electric automobile, the preparation material of drain pan is the carbon fiber, the drain pan includes drain pan body and a plurality of crossbeam, the drain pan body includes the bottom plate and sets up the bounding wall at bottom plate edge, a plurality of crossbeams set up on the bottom plate, be provided with the installation component on the crossbeam. In the embodiment of the application, the drain pan plays the effect of fixed battery module and protection battery module, the drain pan adopts carbon fiber material preparation to form, when satisfying structural strength, reduces battery system's quality, reaches the effect that improves energy density, and then increases the continuous mileage of electric automobile, and simultaneously in production drain pan process, can effectual reduction to the pollution of environment.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a perspective view of a bottom case of a battery system for an electric vehicle according to the present application;

FIG. 2 is a schematic structural view of a mounting member provided herein;

fig. 3 is a front view of a battery system bottom case for an electric vehicle according to the present disclosure;

fig. 4 is a back view of a battery system bottom case for an electric vehicle according to the present disclosure;

fig. 5 is a bottom view of a battery system bottom case for an electric vehicle according to the present disclosure;

fig. 6 is a top view of a battery system bottom case for an electric vehicle according to the present disclosure;

fig. 7 is a left side view of a bottom case of a battery system for an electric vehicle according to the present disclosure;

fig. 8 is a right side view of a battery system bottom case for an electric vehicle according to the present application.

The structure comprises a base shell body 1, a bottom plate 11, a coaming 12, a locking strip 121, a sealing rubber strip 1211, a cross beam 2, a mounting component 21, a nut 211, a nut 2111, a nut hole 212, a hidden nut layer 2121, an opening 2121 and a groove 22.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the technical solutions of the present application will be described in detail and completely with reference to the following specific embodiments of the present application and the accompanying drawings. It should be apparent that the described embodiments are only some of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application. The technical solutions provided by the embodiments of the present application are described in detail below with reference to the accompanying drawings.

Referring to fig. 1, the embodiment of the application provides a battery system bottom case for electric automobile, the preparation material of bottom case is carbon fiber, the bottom case includes bottom case body 1 and a plurality of crossbeam 2, bottom case body 1 includes bottom plate 11 and sets up bounding wall 12 at bottom plate 11 edge, and a plurality of crossbeams 2 set up on bottom plate 11, be provided with installation component 21 on crossbeam 2.

In the related art, most of battery systems developed by manufacturers mostly adopt metal plates or aluminum alloys as main materials of battery system shells, and have the defects of large mass which generally reaches over 60kg, and the process pollutes the environment because the surface spraying treatment is required after the battery systems are processed.

Specifically, the drain pan of this application embodiment adopts carbon fiber material to process the preparation, drain pan body 1's structure adopts crossbeam 2 to support, increases overall structure intensity. The connection mode of the cross beam 2 and the bottom plate 11 is performed by adopting a bonding mode, and the connection mode is different from a welding process of traditional materials, and two ends of the cross beam 2 are respectively bonded with the enclosing plate 12.

The cross member 2 is provided with a mounting member 21, and the bottom case is fixed to the battery module by the mounting member 21.

Carbon fiber material density is little, and intensity is high, and the inside battery module of assurance that the drain pan that utilizes carbon fiber preparation can be better is not harmed when receiving impact and vibration. Simultaneously, the carbon fiber material has good insulating nature, can effectually prevent in production and use, and high-pressure adapting unit contacts the drain pan and takes place the risk of short circuit. The carbon fiber material is also corrosion-resistant, and an anti-corrosion base material does not need to be sprayed on the surface, so that the pollution can be effectively reduced.

The carbon fiber material that this application adopted only needs carry out the shaping to the material, and fixed processing can accomplish processing, and the later stage need not to handle the surface again, does not pollute. Meanwhile, the carbon fiber material is low in density and high in strength, the mass can be greatly reduced, and the mass is less than one fifth of that of a sheet metal shell.

The drain pan of this application embodiment is connected with automobile body chassis when using, fixes battery system on the automobile body through fixed bolster and bolt.

In some embodiments, referring to fig. 2, the mounting member 21 includes a nut 211 and a hidden nut layer 212; be provided with recess 22 on crossbeam 2, the inside embedding nut 211 of recess 22 the upper surface of nut 211 covers there is hidden nut layer 212, the upper surface of hiding nut layer 212 with the upper surface of crossbeam 2 is on the coplanar.

Specifically, a groove 22 is formed in the cross beam 2, the inner surface of the groove 22 is matched with the outer wall of the nut 211, the nut 211 is embedded in the groove 22, the nut 211 is covered and hidden on the nut 211, and only a nut hole 2111 is reserved on the cross beam 2.

The battery module is provided with a fixing through hole, and the fixing through hole is fixedly connected with the nut 211 through a bolt during use.

In some embodiments, the blind nut layer 212 is provided with an aperture 2121, the aperture 2121 being equal in diameter to the nut eye 2111.

It should be noted that the hidden nut layer 212 is disposed on the upper surface of the nut 211. The opening 2121 of the hidden nut layer 212 has the same diameter as the nut eye 2111, so that the nut 211 can be more stably mounted in the groove 22 without affecting the function of the nut 211.

In some embodiments, several beams 2 are parallel to each other.

Specifically, the cross beams 2 are parallel to each other, and the arrangement direction of the cross beams 2 is perpendicular to the enclosing plates 12, so that the bottom shell can be further reinforced.

In some embodiments, as shown in fig. 3-8, a locking strip 121 is provided on a side of the upper end of the shroud 12 remote from the beam 2.

The locking strip 121 is used for being connected with an upper cover of a battery system, the battery system is provided with an upper cover besides a bottom shell and a battery module, and the upper cover is connected with the bottom shell through the locking strip 121.

In some embodiments, a sealant 1211 is disposed on the locking strip 121.

A sealing rubber strip 1211 is further disposed in the locking strip 121, and can serve to hermetically connect the upper cover and the bottom case.

In some embodiments, the number of the mounting parts 21 is several. In order to ensure the stable connection between the bottom case and the battery module, the mounting members 21 are regularly arranged on the cross member 2.

In some embodiments, the material of the hidden nut layer 212 is carbon fiber. The material of the hidden nut layer 212 is the same as that of the beam 2, and is carbon fiber, so that the bottom shell can reduce the weight to the maximum extent.

According to the technical scheme, the application provides a battery system drain pan for electric automobile, the preparation material of drain pan is the carbon fiber, the drain pan includes drain pan body 1 and a plurality of crossbeam 2, drain pan body 1 includes bottom plate 11 and sets up the bounding wall 12 at 11 edges of bottom plate, a plurality of crossbeams 2 set up on the bottom plate 11, be provided with installing component 21 on the crossbeam 2. In the embodiment of the application, the drain pan plays the effect of fixed battery module and protection battery module, the drain pan adopts carbon fiber material preparation to form, when satisfying structural strength, reduces battery system's quality, reaches the effect that improves energy density, and then increases the continuous mileage of electric automobile, and simultaneously in production drain pan process, can effectual reduction to the pollution of environment.

The same and similar parts in the various embodiments in this specification may be referred to each other.

Other embodiments of the invention will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the invention and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the invention being indicated by the following claims.

It will be understood that the invention is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the invention is limited only by the appended claims.

Claims

1. The battery system bottom shell for the electric automobile is characterized in that the bottom shell is made of carbon fibers, the bottom shell comprises a bottom shell body (1) and a plurality of cross beams (2), the bottom shell body (1) comprises a bottom plate (11) and a coaming (12) arranged at the edge of the bottom plate (11), the cross beams (2) are arranged on the bottom plate (11), and mounting parts (21) are arranged on the cross beams (2).

2. The battery system bottom case for the electric vehicle as set forth in claim 1, wherein the mounting part (21) comprises a nut (211) and a hidden nut layer (212); be provided with recess (22) on crossbeam (2), inside embedding nut (211) of recess (22) the upper surface of nut (211) covers and has hides nut layer (212), hide the upper surface of nut layer (212) with the upper surface of crossbeam (2) is on the coplanar.

3. The bottom case of claim 2, wherein the hidden nut layer (212) is provided with an opening (2121), and the opening (2121) is equal to the diameter of the nut hole (2111).

4. The battery system bottom case for the electric vehicle as claimed in claim 1, wherein the plurality of cross members (2) are parallel to each other.

5. The bottom shell of the battery system for the electric automobile as claimed in claim 1, wherein a locking strip (121) is arranged on one side of the upper end of the coaming (12) far away from the cross beam (2).

6. The bottom case of battery system for electric vehicle as claimed in claim 5, wherein the locking strip (121) is provided with a sealing rubber strip (1211).

7. The battery system bottom case for the electric vehicle as set forth in claim 1, wherein the number of the mounting parts (21) is several.

8. The battery system bottom case for the electric vehicle as recited in claim 2, wherein the material of the hidden nut layer (212) is carbon fiber.