CN214688996U

CN214688996U - Electric automobile chassis and electric automobile

Info

Publication number: CN214688996U
Application number: CN202120441585.6U
Authority: CN
Inventors: 杨晓伟; 何亚飞
Original assignee: Envision Power Technology Jiangsu Co Ltd; Envision Ruitai Power Technology Shanghai Co Ltd
Current assignee: Envision Power Technology Jiangsu Co Ltd; Envision Ruitai Power Technology Shanghai Co Ltd
Priority date: 2021-03-01
Filing date: 2021-03-01
Publication date: 2021-11-12
Anticipated expiration: 2031-03-01

Abstract

The utility model relates to an electric automobile technical field especially relates to an electric automobile chassis and electric automobile. The electric automobile chassis comprises a chassis frame, a battery module and a chassis bottom plate, wherein the chassis frame is provided with an accommodating space; the chassis bottom plate is arranged on the chassis frame and is blocked at the bottom of the accommodating space; the battery module comprises a box body and a battery core, wherein the box body is arranged in the accommodating space and is fixedly connected with the chassis bottom plate through heat-conducting structural adhesive; a plurality of electric cores are arranged in the box body at intervals in parallel, and are electrically connected through the pole lugs. By directly integrating a plurality of battery cells in the box body, the space utilization rate of the box body can be improved, the weight of the battery module is reduced, the capacity density of the battery module is increased, and the endurance mileage is improved; set up battery module in chassis frame's accommodation space, then utilize the heat conduction structure to glue battery module and chassis bottom plate fixed connection, can enough guarantee battery module's installation stability, can guarantee battery module's radiating efficiency again.

Description

Electric automobile chassis and electric automobile

Technical Field

The utility model relates to an electric automobile technical field especially relates to an electric automobile chassis and electric automobile.

Background

The electric automobile is a vehicle which takes a vehicle-mounted power battery as a power source and drives wheels to run by using a motor. Most of the existing power batteries are battery packs, and then the battery packs are installed on an automobile chassis. With the same size of the electric vehicle chassis, there are two disadvantages to this design: firstly, the energy density of the battery pack is low; secondly, the whole weight of the chassis is large, the energy consumption of the automobile is increased, and the endurance mileage of the automobile is reduced.

Therefore, there is a high necessity for an electric vehicle chassis to solve the above problems.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an electric automobile chassis, under the same condition of electric automobile chassis size, can increase power battery energy density, realize the lightweight design, improve the car continuation of the journey mileage.

Another object of the utility model is to provide an electric automobile, through using above-mentioned electric automobile chassis, can realize the lightweight design, improve the car continuation of the journey mileage.

In order to realize the purpose, the following technical scheme is provided:

in one aspect, an electric vehicle chassis is provided, comprising:

a chassis frame having an accommodating space provided thereon;

the battery module comprises a box body and a plurality of battery cells, wherein the box body is arranged in the accommodating space, the plurality of battery cells are arranged in the box body in parallel at intervals, and the battery cells are electrically connected through tabs of the battery cells;

and the chassis bottom plate is arranged on the chassis frame and plugged at the bottom of the accommodating space, and the chassis bottom plate is fixedly connected with the box body through heat conduction structural adhesive.

As an alternative of the electric automobile chassis, a heat insulation buffer material is filled between the adjacent electric cores.

As the alternative scheme of electric automobile chassis, the box includes end plate, curb plate, upper cover and lower cover, the end plate with the curb plate is connected in turn and is enclosed to establish and form frame structure, and is a plurality of electric core is followed the extending direction of end plate is arranged and is set up, the upper cover with the lower cover is covered respectively and is established frame structure's upper end and lower extreme.

As an alternative of the electric automobile chassis, the chassis bottom plate is fixed on the bottom surface of the chassis frame, and the chassis bottom plate and the lower cover are fixedly connected through a heat-conducting structural adhesive.

As an alternative to the electric vehicle chassis, the end plates and the side plates are each detachably fixed to the side wall of the accommodating space by fasteners.

As an alternative of the electric automobile chassis, the coating area of the heat-conducting structural adhesive is 60-80% of the area of the lower cover.

As an alternative of the electric vehicle chassis, the shape of the coated heat-conducting structural adhesive is in a shutter shape, and the heat-conducting structural adhesive is uniformly coated on the lower cover.

As an alternative of the electric vehicle chassis, the shape of the coated heat-conducting structural adhesive is in a grid shape, and the heat-conducting structural adhesive is uniformly coated on the lower cover.

As an alternative to the electric vehicle chassis, the side wall of the box body is clearance-fitted with the side wall of the accommodating space.

In another aspect, an electric vehicle is provided, which includes the electric vehicle chassis as described above.

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

the utility model provides an electric automobile chassis, which comprises a chassis frame, a battery module and a chassis bottom plate, wherein the chassis frame is provided with an accommodating space; the chassis bottom plate is arranged on the chassis frame and is blocked at the bottom of the accommodating space; the battery module comprises a box body and a battery core, wherein the box body is arranged in the accommodating space and is fixedly connected with the chassis bottom plate through heat-conducting structural adhesive; a plurality of electric cores are arranged in the box body at intervals in parallel, and the electric cores are electrically connected through the lugs of the electric cores. By directly integrating a plurality of battery cells in the box body, the space utilization rate of the box body can be improved, the weight of the battery module is reduced, the capacity density of the battery module is increased, and the endurance mileage is improved; in addition, set up battery module in chassis frame's accommodation space, then utilize heat conduction structure to glue battery module and chassis bottom plate fixed connection, can enough guarantee battery module's installation stability, can guarantee battery module's radiating efficiency again.

The utility model provides an electric automobile through using above-mentioned electric automobile chassis, can realize the lightweight design, improves the car continuation of the journey mileage.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required to be used in the description of the embodiments of the present invention will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the contents of the embodiments of the present invention and the drawings without creative efforts.

Fig. 1 is an exploded schematic view of an electric vehicle chassis according to an embodiment of the present invention;

fig. 2 is a schematic view of connection between battery cells through tabs according to an embodiment of the present invention;

fig. 3 is a schematic view of the thermal insulation buffer material filled between the cells provided by the embodiment of the present invention.

Reference numerals:

100-a chassis frame;

200-a battery module; 201-end plate; 202-side plate; 203-upper cover; 204-lower cover; 205-electric core; 2051-pole ear; 206-thermal insulation buffer material.

Detailed Description

In order to make those skilled in the art better understand the technical solution of the present invention, the technical solution of the present invention is further described below by referring to the drawings and the detailed description.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, detachably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "left", "right", and the like are used in the orientation or positional relationship shown in the drawings only for convenience of description and simplicity of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.

As shown in fig. 1 to 3, the present embodiment provides an electric vehicle chassis, which includes a chassis frame 100, a battery module 200, and a chassis base plate (not shown in the drawings), wherein an accommodating space is disposed on the chassis frame 100; the chassis bottom plate is arranged on the chassis frame 100 and is blocked at the bottom of the accommodating space; the battery module 200 comprises a box body and a battery cell 205, wherein the box body is arranged in the accommodating space and is fixedly connected with the chassis bottom plate through a heat conduction structural adhesive; a plurality of battery cells 205 are arranged in the box body at intervals in parallel, and the battery cells 205 are electrically connected through tabs 2051 of the battery cells 205.

By directly integrating a plurality of battery cells 205 in the box body, the space utilization rate of the box body can be improved, the weight of the battery module 200 can be reduced, the capacity density of the battery module 200 can be increased, and the endurance mileage can be improved; in addition, set up battery module 200 in the accommodation space of chassis frame 100, then utilize heat conduction structure to glue battery module 200 and chassis bottom plate fixed connection, can enough guarantee battery module 200's installation stability, can guarantee battery module 200's radiating efficiency again.

As shown in fig. 1, the box body includes an end plate 201, a side plate 202, an upper cover 203 and a lower cover 204, the end plate 201 and the side plate 202 are alternately connected and enclosed to form a frame structure, a plurality of battery cells 205 are arranged in an extending direction of the end plate 201, and the upper cover 203 and the lower cover 204 are respectively covered at the upper end and the lower end of the frame structure.

Alternatively, the end plate 201 and the side plate 202 are detachably fixed to the side wall of the receiving space by fasteners. Illustratively, the end plate 201 and the side plate 202 are both provided with fixing overlapping edges, the fixing overlapping edges are provided with bolt holes, the side walls of the accommodating space are correspondingly provided with bolt holes, and the end plate 201 and the side plate 202 are fixed on the chassis frame 100 through bolts.

In this embodiment, the chassis base plate is fixed on the bottom surface of the chassis frame 100, and the chassis base plate and the lower cover 204 are fixedly connected through a heat conducting structural adhesive.

Preferably, the coating area of the heat-conducting structural adhesive is 60 to 80 percent of the area of the lower cover 204. The connection strength between the battery module 200 and the chassis base plate can be ensured, and the heat dissipation efficiency of the battery module 200 can be ensured. Under the condition that the connection strength of the battery module 200 and the chassis base plate can be ensured, the smaller the coating area of the structural adhesive is, the better the coating area is.

Optionally, the shape of the coated heat conducting structural adhesive is a louver, and the heat conducting structural adhesive is uniformly coated on the lower cover 204. Optionally, the shape of the coated heat conducting structural adhesive is in a grid shape, and the heat conducting structural adhesive is uniformly coated on the lower cover 204.

In this embodiment, the side wall of the box body is in clearance fit with the side wall of the accommodating space. That is, only one battery module 200 is disposed in the electric vehicle chassis provided in this embodiment, so as to fully utilize the accommodation space of the chassis frame 100, achieve the light-weight design of the electric vehicle chassis, reduce energy consumption, and improve the endurance mileage.

As shown in fig. 2, the adjacent cells 205 are filled with a thermal insulation buffer material 206. When the battery cells 205 generate heat by discharging, the thermal insulation buffer material 206 can separate heat between the battery cells 205, and at the same time, the battery cells 205 can deform under the action of thermal expansion force, so as to ensure the stability of the battery cells 205.

The embodiment also provides an electric automobile, including foretell electric automobile chassis, through using above-mentioned electric automobile chassis, can realize the lightweight design, improve the car continuation of the journey mileage.

It should be noted that the foregoing is only a preferred embodiment of the present invention and the technical principles applied. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious modifications, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail with reference to the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the scope of the present invention.

Claims

1. An electric vehicle chassis, comprising:

a chassis frame (100) on which an accommodation space is provided;

the battery module (200) comprises a box body and battery cells (205), wherein the box body is arranged in the accommodating space, the battery cells (205) are arranged in the box body at intervals in parallel, and the battery cells (205) are electrically connected through tabs (2051) of the battery cells (205);

and the chassis bottom plate is arranged on the chassis frame (100) and plugged at the bottom of the accommodating space, and the chassis bottom plate is fixedly connected with the box body through heat conduction structural adhesive.

2. The electric vehicle chassis of claim 1, wherein a thermal insulation buffer material (206) is filled between adjacent cells (205).

3. The electric vehicle chassis according to claim 2, wherein the box body comprises an end plate (201), a side plate (202), an upper cover (203) and a lower cover (204), the end plate (201) and the side plate (202) are alternately connected and enclosed to form a frame structure, the plurality of battery cells (205) are arranged in a row along the extending direction of the end plate (201), and the upper cover (203) and the lower cover (204) are respectively covered at the upper end and the lower end of the frame structure.

4. The electric vehicle chassis of claim 3, wherein the chassis base plate is fixed on the bottom surface of the chassis frame (100), and the chassis base plate is fixedly connected with the lower cover (204) through a heat conducting structural adhesive.

5. The electric vehicle chassis of claim 3, wherein the end plate (201) and the side plate (202) are each detachably fixed to a side wall of the receiving space by a fastener.

6. The electric automobile chassis according to claim 4, characterized in that the coating area of the heat-conducting structural adhesive is 60-80% of the area of the lower cover (204).

7. The electric vehicle chassis according to claim 6, wherein the shape of the coated heat conducting structural adhesive is a louver shape, and the heat conducting structural adhesive is uniformly coated on the lower cover (204).

8. The electric vehicle chassis according to claim 6, wherein the shape of the coated heat conducting structural adhesive is a grid shape, and the heat conducting structural adhesive is uniformly coated on the lower cover (204).

9. The electric vehicle chassis according to any one of claims 1 to 8, wherein a side wall of the box body is clearance-fitted to a side wall of the accommodation space.

10. An electric vehicle comprising an electric vehicle chassis according to any one of claims 1 to 9.