CN211530026U

CN211530026U - Aluminum alloy battery lower shell for new energy automobile

Info

Publication number: CN211530026U
Application number: CN202020254301.8U
Authority: CN
Inventors: 黄长远; 张志勇
Original assignee: FUJIAN MINFA ALUMINIUM Inc
Current assignee: FUJIAN MINFA ALUMINIUM Inc
Priority date: 2020-03-04
Filing date: 2020-03-04
Publication date: 2020-09-18
Anticipated expiration: 2030-03-04

Abstract

The utility model relates to the field of power battery equipment, and provides an aluminum alloy battery lower shell for a new energy automobile, which solves the problems that the size of a containing cavity in the lower shell of the battery in the prior art can not be adjusted and the requirements of batteries with different specifications can not be met, and comprises a bottom plate, a frame and a baffle plate, wherein the bottom of the bottom plate is coated with a waterproof wear-resistant layer, the frame surrounds the edge arranged at the top of the bottom plate, the frame comprises a group of transverse side plates which are oppositely arranged and a group of longitudinal side plates which are oppositely arranged, the outer walls of the transverse side plates and the longitudinal side plates are respectively provided with a plurality of baffle plates, the inner walls of the transverse side plates are respectively provided with a plurality of connecting plates, the connecting plates are provided with grooves, slide blocks are arranged in the grooves, the baffle plate is fixedly connected between the slide blocks which are oppositely arranged, and a second buffer spring is arranged on the inner wall of the longitudinal side plate, and a second fixing plate is arranged at the other end of the second buffer spring.

Description

Aluminum alloy battery lower shell for new energy automobile

Technical Field

The utility model relates to a power battery equips technical field, especially relates to a casing under aluminum alloy battery for new energy automobile.

Background

With the rapid development of the automobile industry, the gap of energy demand supply is larger and larger, and the pollution of the exhaust emission of the fuel automobile to the atmosphere is more and more serious. In the face of the dilemma, the development of new energy automobiles has important significance for guaranteeing national energy safety, solving environmental pollution and realizing sustainable development of social economy. The new energy automobile has the advantages of energy conservation, emission reduction, environmental protection and the like, and represents the mainstream direction of the development of the automobile industry in the world. The power battery is one of the core components of the electric automobile and is a power source of the whole automobile. The battery shell is used as a carrier of the power battery, plays a key role in the aspects of safe operation and protection of the power battery, can provide an installation space for other parts, reduces the impact of the electric automobile environment on other parts, and can protect other parts when the automobile has safety problems such as collision and the like. The battery shell is divided into an upper shell and a lower shell, wherein the upper shell is generally made of composite plastic materials, mainly has certain requirements on sealing performance and does not bear load; the lower shell is mostly made of steel, so that the battery module is protected and supported, and the lower shell made of steel is high in strength and rigidity; but has the disadvantages of large mass and poor corrosion resistance; the battery shell made of light materials such as aluminum alloy and the like has light weight, meets the requirement of light weight of an automobile, and is widely popularized in the battery market. For example, chinese patent No.: 201721265766.8 discloses a lower aluminum alloy battery shell for a new energy automobile, which comprises a bottom plate and a side frame positioned at the edge of the upper part of the bottom plate, wherein the bottom plate is of a double-layer structure consisting of an upper bottom plate and a lower bottom plate, and studs are uniformly distributed between the upper bottom plate and the lower bottom plate; bellied gusset of top surface equipartition of bottom plate upper plate, each gusset is parallel with the width direction of casing down, and each gusset is equipped with the rivet nut that is used for installing the battery module, and the bottom surface of bottom plate is equipped with the PVC inoxidizing coating of 1-2 millimeters thickness, should the utility model discloses all demonstrate obvious advantage in the aspect of resistant vibration strength, impact resistance, collision security performance, sealing performance, corrosion resistance, anti stone hit performance and dead weight, it is short to compare casing production technology under traditional steel, and equipment input is low, and some equipment can realize characteristics such as general. However, the internal space of the lower shell of the new energy automobile in the prior art generally forms a plurality of accommodating cavities by utilizing the partition plates, so that the battery module and the battery element can be placed, the size of the accommodating cavities can not be adjusted, the requirements of the battery modules in different sizes can not be met, and the application range of the lower shell of the battery is influenced.

SUMMERY OF THE UTILITY MODEL

Therefore, to above content, the utility model provides a casing under aluminum alloy battery for new energy automobile solves the unable regulation of the inside chamber size that holds of casing under the prior art new energy automobile battery, can not satisfy the problem of different specification battery demands.

In order to achieve the purpose, the utility model is realized by the following technical proposal:

an aluminum alloy battery lower shell for a new energy automobile comprises a bottom plate, a frame and a partition plate, wherein a waterproof wear-resistant layer is coated at the bottom of the bottom plate, the frame is of a frame structure formed by bending a whole aluminum section bar to be connected end to end and welding, the frame surrounds the edge of the top of the bottom plate, the frame comprises a group of transverse side plates and a group of longitudinal side plates which are oppositely arranged, a plurality of baffles are arranged on the outer walls of the transverse side plates and the longitudinal side plates, a plurality of connecting plates are arranged on the inner wall of each transverse side plate, the connecting plates on the transverse side plates which are oppositely arranged are symmetrically arranged, grooves are formed in the connecting plates, sliding blocks are arranged in the grooves, the partition plate is fixedly connected between the sliding blocks which are oppositely arranged, first buffer springs are arranged on two sides of the partition plate, and a first fixing plate is connected with the other ends, and a second buffer spring is arranged on the inner wall of the longitudinal side plate, and the other end of the second buffer spring is connected with a second fixing plate.

The further improvement is that: the baffle is of a cambered surface structure.

The further improvement is that: the number of the partition plates is two.

The further improvement is that: the baffles on the transverse side plate and the longitudinal side plate which are oppositely arranged are respectively and symmetrically arranged.

The further improvement is that: the waterproof wear-resistant layer is made of polyurethane wear-resistant paint, and the thickness of the waterproof wear-resistant layer is 0.1-0.5 mm.

By adopting the technical scheme, the beneficial effects of the utility model are that:

the frame adopts whole root aluminium alloy to buckle to end and welds the frame type structure that forms, compares in the frame structure that many aluminium alloy tailor-welded formed, and welding work volume is little, and the leakproofness of frame is high. The baffle that sets up on the outer wall of frame can play fine guard action, avoids the vehicle to take place the extrusion destruction that front collision, side collision and rear collision in-process probably caused battery housing, has improved battery housing's anti extrusion ability, anti ability of colliding. The baffle is further designed to be of an arc surface or a curved surface structure, and when the arc surface is under pressure, the force can be uniformly diffused to other parts. Bottom plate and frame form the accommodation space who is used for holding battery module and battery element, the baffle further forms a plurality of chambeies that hold with accommodation space, through the slip of slider in the recess, can adjust the position of baffle, it is simple convenient, be fit for not unidimensional battery module and battery element's installation, first buffer spring, first fixed plate, the setting of second buffer spring and second fixed plate, can fix battery module and battery element well, when indulging the curb plate and receive the striking simultaneously, absorb vibration and impact force through buffer spring, play the effect of buffering, reduce because of the damage degree that external force factor closed battery element to the battery module.

Drawings

Fig. 1 is a perspective view of an embodiment of the present invention;

fig. 2 is a top view of an embodiment of the invention;

FIG. 3 is a cross-sectional view A-A of FIG. 1;

fig. 4 is an enlarged schematic view at B in fig. 2.

Detailed Description

The present invention will now be further described with reference to the accompanying drawings and specific embodiments.

The embodiment of the utility model provides a do:

referring to fig. 1 to 4, a lower aluminum alloy battery casing for a new energy automobile comprises a bottom plate 1, a frame 2 and a partition plate 3, wherein the bottom of the bottom plate 1 is coated with a waterproof wear-resistant layer 4, the waterproof wear-resistant layer 4 is made of polyurethane wear-resistant paint, the thickness of the waterproof wear-resistant layer 4 is 0.5mm, the frame 2 is of a frame structure formed by bending a whole aluminum section bar to be connected end to end and welding, the frame 2 surrounds the edge at the top of the bottom plate 1, the bottom plate 1 is an aluminum alloy plate, the frame 2 comprises a group of transverse side plates 21 and a group of longitudinal side plates 22, the transverse side plates 21 and the longitudinal side plates 22 are both provided with baffle plates 5, the transverse side plates 21 and the longitudinal side plates 22 are symmetrically arranged respectively, the number of the baffle plates on each transverse side plate 21 is four, and the number of the baffle plates on each longitudinal side plate is three, the baffle 5 is of a cambered surface structure, two connecting plates 6 are arranged on the inner wall of each transverse side plate 21, the connecting plates 6 on the transverse side plates 21 which are oppositely arranged are symmetrically arranged, a groove 7 is formed in each connecting plate 6, a sliding block 8 is arranged in each groove 7, a partition plate 3 is fixedly connected between the sliding blocks 8 which are oppositely arranged, first buffer springs 9 are arranged on two sides of the partition plate 3, the other ends of the first buffer springs 9 are connected with a first fixing plate 10, a second buffer spring 11 is arranged on the inner wall of the longitudinal side plate 22, and the other end of the second buffer spring 11 is connected with a second fixing plate 12.

When the vehicle is in the processes of front collision, side collision and rear collision, the baffle plate arranged on the outer wall of the frame can play a good role in protection, so that the battery shell is prevented from being extruded and damaged by collision, and the extrusion resistance and the collision resistance of the battery shell are improved. The baffle is further designed to be of an arc surface or a curved surface structure, and when the arc surface is under pressure, the force can be uniformly diffused to other parts. The bottom plate and the frame form the accommodation space that is used for holding battery module and battery element, and the baffle further forms a plurality of chambeies that hold with accommodation space, when the battery module and the battery element of installation unidimensional need be changed, can be through the slider in the sliding groove to the position of adjustment baffle, it is simple convenient. The battery module and the battery element can be well fixed by the aid of the first buffer spring, the first fixing plate, the second buffer spring and the second fixing plate, and meanwhile, when the longitudinal side plate is impacted, the buffer spring absorbs vibration and impact force to play a role in buffering, so that damage degree of the battery module and the battery element due to external force factors is reduced.

While the invention has been particularly shown and described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. The utility model provides a casing under aluminum alloy battery for new energy automobile which characterized in that: comprises a bottom plate, a frame and a partition plate, wherein the bottom of the bottom plate is coated with a waterproof wear-resistant layer, the frame is of a frame structure formed by bending a whole aluminum section bar to be connected end to end and welding, the frame is arranged at the edge of the top of the bottom plate in a surrounding way, the frame comprises a group of transverse side plates which are arranged oppositely and a group of longitudinal side plates which are arranged oppositely, the outer walls of the transverse side plates and the longitudinal side plates are respectively provided with a plurality of baffle plates, the inner wall of each transverse side plate is provided with a plurality of connecting plates, the connecting plates on the transverse side plates which are oppositely arranged are symmetrically arranged, each connecting plate is provided with a groove, the grooves are internally provided with sliding blocks, a clapboard is fixedly connected between the sliding blocks which are oppositely arranged, two sides of the clapboard are provided with first buffer springs, the other end of the first buffer spring is connected with a first fixing plate, a second buffer spring is arranged on the inner wall of the longitudinal side plate, and the other end of the second buffer spring is connected with a second fixing plate.

2. The aluminum alloy battery lower case for the new energy automobile as claimed in claim 1, wherein: the baffle is of a cambered surface structure.

3. The aluminum alloy battery lower case for the new energy automobile as claimed in claim 1, wherein: the number of the partition plates is two.

4. The aluminum alloy battery lower case for the new energy automobile as claimed in claim 1, wherein: the baffles on the transverse side plate and the longitudinal side plate which are oppositely arranged are respectively and symmetrically arranged.

5. The aluminum alloy battery lower case for the new energy automobile as claimed in claim 1, wherein: the waterproof wear-resistant layer is made of polyurethane wear-resistant paint, and the thickness of the waterproof wear-resistant layer is 0.1-0.5 mm.