CN215816168U - Novel battery box structure suitable for pure electric vehicles - Google Patents
Novel battery box structure suitable for pure electric vehicles Download PDFInfo
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- CN215816168U CN215816168U CN202121407869.XU CN202121407869U CN215816168U CN 215816168 U CN215816168 U CN 215816168U CN 202121407869 U CN202121407869 U CN 202121407869U CN 215816168 U CN215816168 U CN 215816168U
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- side beam
- battery box
- box body
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- cover plate
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Abstract
The utility model relates to a novel battery box body structure suitable for a pure electric vehicle, which comprises an upper cover plate, a left side beam, a right side beam, a front side beam, a rear side beam, a cross beam, a longitudinal beam and a bottom plate, wherein the left side beam and the right side beam are arranged in a bilateral symmetry manner, the front side beam and the rear side beam are arranged in a front-back symmetry manner, the left side beam, the right side beam, the front side beam and the rear side beam enclose a rectangular frame, the rectangular frame is arranged on the bottom plate, the rectangular frame and the bottom plate form a battery box body, the cross beam is arranged between the left side beam and the right side beam, the longitudinal beam is arranged between the front side beam and the rear side beam, the cross beam and the longitudinal beam are arranged in a vertical cross manner, the upper cover plate is arranged at the top end cover of the battery box body, and the battery box body, the upper cover plate, the cross beam and the longitudinal beam form a battery box body; compared with the prior art, the utility model provides the steel-aluminum composite light-weight and low-cost battery box body structure, the weight of the battery box body can be reduced, the cost is reduced, and the problems of heavy weight and high cost of the traditional aluminum alloy material structure battery box body are solved.
Description
[ technical field ]
The utility model relates to the technical field of automobile battery packs, in particular to a novel battery box body structure suitable for a pure electric automobile.
[ background art ]
The global automobile industry faces the common challenges of energy shortage, environmental pollution, climate warming and the like, so that new energy automobiles become necessary trends. Research shows that the new energy automobile reduces the weight by 50kg, increases the endurance mileage by 5-7km and reduces the energy consumption by 2-3%. The battery pack accounts for 25% of the weight of the whole vehicle, and the light weight is a necessary trend and is also a necessary way for reducing energy consumption.
At present, the battery box body which is an important component of the battery pack generally adopts an aluminum alloy material structure. Based on the strength characteristics of the aluminum alloy material, the structural rigidity and the column collision resistance of the battery box body are improved by increasing the thickness of the bottom plate and reinforcing the structural design of the cross beam and the longitudinal beam sections; meanwhile, a bottom guard plate needs to be additionally arranged independently so as to avoid the problem of battery safety caused by battery falling and bottom mechanical impact, and the lightweight effect of the battery box body with the aluminum alloy material structure has no advantages and is heavier than the industry average level of 9.5%. Because the cost of the aluminum alloy raw material is about 2 times of that of steel, the production cost of the battery box body with the aluminum alloy structure is obviously higher, and the battery box body does not have competitive advantage. If can provide a novel structure battery box, carry out technical optimization from material, structure, technology to solve the problem that aluminum alloy material structure battery box weight is big, with high costs, will have fine promotion effect to promoting battery box design technical innovation.
[ contents of utility model ]
The utility model aims to solve the defects, provide a novel steel-aluminum composite battery box body structure which is light in weight, low in cost and suitable for a pure electric vehicle, can reduce the weight of the battery box body, reduces the cost, and solves the problems of heavy weight and high cost of the traditional aluminum alloy material structure battery box body.
In order to achieve the purpose, the novel battery box structure suitable for the pure electric vehicle comprises an upper cover plate 1, a left side beam 2, a right side beam 3, a front side beam 4, a rear side beam 5, a cross beam 6, a longitudinal beam 7 and a bottom plate 8, wherein the left side beam 2 and the right side beam 3 are arranged in a bilateral symmetry mode, the front side beam 4 and the rear side beam 5 are arranged in a front-back symmetry mode, the left side beam 2, the right side beam 3, the front side beam 4 and the rear side beam 5 are enclosed to form a rectangular frame, the rectangular frame is installed on the bottom plate 8, the rectangular frame and the bottom plate 8 form a battery box body, the cross beam 6 is installed between the left side beam 2 and the right side beam 3, the longitudinal beam 7 is installed between the front side beam 4 and the rear side beam 5, the cross beam 6 and the longitudinal beam 7 are arranged in a vertical cross mode, the top end cover of the battery box body is provided with the upper cover plate 1, and the battery box body, the upper cover plate 1, the cross beam 6, The longitudinal beam 7 forms a battery box body, the battery box body is made of aluminum alloy materials, and the upper cover plate 1, the cross beam 6 and the longitudinal beam 7 are made of steel materials.
Furthermore, the upper cover plate 1 is formed by punching a common mild steel plate material, the thickness of the upper cover plate 1 is 0.5-0.7mm, the upper cover plate 1 is in a plane plate shape, and reinforcing ribs are arranged on the upper cover plate 1.
Further, left side roof beam 2, right roof beam 3 adopt aluminium alloy material extrusion, and thickness is 1.5-2.2mm, the longitudinal section of left side roof beam 2, right roof beam 3 all is the L type, and just inside cavity is equallyd divide for a plurality of rectangle, trapezoidal or triangle-shaped cavity.
Furthermore, the front side beam 4 and the rear side beam 5 are formed by extrusion of aluminum alloy materials, the thicknesses of the front side beam 4 and the rear side beam 5 are 1.5-2.2mm, the longitudinal sections of the front side beam 4 and the rear side beam 5 are C-shaped, and the inner cavities of the front side beam 4 and the rear side beam are equally divided into a plurality of rectangular or triangular cavities.
Furthermore, the cross beam 6 and the longitudinal beam 7 are formed by punching HC980QP or HC980DP high-strength steel, and the thickness of each is 1.2-1.8 mm.
Further, the number of the cross beams 6 is 1-3, and the cross beams 6 are distributed at the positions of the center pillars of the automobile body.
Further, the bottom plate 8 is formed by extrusion of an aluminum alloy material, and the thickness of the bottom plate 8 is 2.5-3.5 mm.
Furthermore, the battery box body is formed by connecting a bottom plate 8 with the left beam 2, the right beam 3, the front beam 4 and the rear beam 5 through a friction stir welding process.
Furthermore, flow drilling screw connection processes are adopted between the cross beam 6 and the left side beam 2 and the right side beam 3, between the longitudinal beam 7 and the front side beam 4 and the rear side beam 5, and between the upper cover plate 1 and the battery box body.
Further, the battery box is irregular cuboid, and the external dimension scope of battery box is: the length is 1500-.
Compared with the prior art, the utility model has the following advantages:
(1) the utility model provides a steel-aluminum composite lightweight and low-cost battery box body suitable for a pure electric vehicle, which fully exerts the performance characteristics of advanced high-strength steel, aluminum alloy materials and the like so as to reduce the weight of the battery box body and reduce the cost;
(2) the battery box body adopts a steel-aluminum conforming structure, fully exerts the performance advantages of light materials such as high-strength steel, aluminum alloy and the like, meets the performance requirements of the battery box body structure such as durability, rigidity, vibration, falling and the like, and can play a role in protecting the battery module after being combined with the body side beam after being carried with the whole vehicle;
(3) the battery box body is made of extruded aluminum alloy materials, and a friction stir welding process is adopted, so that the air tightness and the water resistance of the box body are effectively ensured;
(4) compared with the pure aluminum alloy battery box body with the same size, the utility model reduces the weight by 15-18 percent, reduces the cost by 22-25 percent and is worth popularizing and applying.
[ description of the drawings ]
FIG. 1 is a schematic structural view of the present invention;
in the figure: 1. the structure comprises an upper cover plate 2, a left side beam 3, a right side beam 4, a front side beam 5, a rear side beam 6, a cross beam 7, a longitudinal beam 8 and a bottom plate.
[ detailed description of the utility model ]
The utility model is further described below with reference to the accompanying drawings:
as shown in the attached figure 1, the utility model provides a novel battery box body structure suitable for a pure electric vehicle, which comprises an upper cover plate 1, a left side beam 2, a right side beam 3, a front side beam 4, a rear side beam 5, a cross beam 6, a longitudinal beam 7 and a bottom plate 8, wherein the left side beam 2 and the right side beam 3 are symmetrically arranged from left to right, the front side beam 4 and the rear side beam 5 are symmetrically arranged from front to back, the left side beam 2, the right side beam 3, the front side beam 4 and the rear side beam 5 are enclosed to form a rectangular frame, the rectangular frame is arranged on the bottom plate 8, the rectangular frame and the bottom plate 8 form a battery box body, the cross beam 6 is arranged between the left side beam 2 and the right side beam 3, the longitudinal beam 7 is arranged between the front side beam 4 and the rear side beam 5, the cross beam 6 and the longitudinal beam 7 are vertically arranged, the top end cover of the battery box body is provided with the upper cover plate 1, the battery box body is made of aluminum alloy material, and the upper cover plate 1, the cross beam 6 and the longitudinal beam 7 are made of steel material, the battery box body, the upper cover plate 1, the cross beam 6 and the longitudinal beam 7 form a battery box body; the battery box body is an irregular cuboid, and the external dimension range of the battery box body is as follows: the length is 1500-.
The upper cover plate 1 is formed by punching common mild steel plate materials (DC series), the thickness of the upper cover plate 1 is 0.5-0.7mm, the upper cover plate 1 is in a plane plate shape, and reinforcing ribs are arranged on the upper cover plate 1, namely, the plane is taken as the main structure, and the reinforcing ribs are added to improve the integral rigidity of the cover plate. The left side beam 2 and the right side beam 3 are extruded and formed by adopting wrought aluminum alloy materials, the thicknesses of the left side beam 2 and the right side beam 3 are 1.5-2.2mm, the longitudinal sections of the left side beam 2 and the right side beam 3 are L-shaped, namely the external profiles of the left side beam 2 and the right side beam are L-shaped structures, and the internal cavity is equally divided into a plurality of rectangular, trapezoidal or triangular cavities. The front side beam 4 and the rear side beam 5 are formed by extrusion of wrought aluminum alloy materials, the thicknesses of the front side beam 4 and the rear side beam 5 are 1.5-2.2mm, the longitudinal sections of the front side beam 4 and the rear side beam 5 are C-shaped, namely the outer contours of the front side beam 4 and the rear side beam are C-shaped structures, and the inner cavities of the front side beam and the rear side beam are uniformly divided into a plurality of rectangular or triangular cavities.
In the utility model, the cross beam 6 and the longitudinal beam 7 are formed by punching HC980QP or HC980DP advanced high-strength steel, and the thickness of the cross beam and the longitudinal beam is 1.2-1.8 mm; according to the design requirement of collision safety, 1-3 beams 6 can be arranged and distributed near the position of the middle upright post of the automobile body. The bottom plate 8 is formed by extrusion of a wrought aluminum alloy material, and the thickness of the bottom plate 8 is 2.5-3.5 mm. The battery box body is formed by connecting a bottom plate 8 with the left beam 2, the right beam 3, the front beam 4 and the rear beam 5 by a friction stir welding process, and meanwhile, good sealing performance is guaranteed. Flow drilling screw connection processes (FDS connection processes) are adopted between the cross beam 6 and the left side beam 2 and the right side beam 3, and between the longitudinal beam 7 and the front side beam 4 and the rear side beam 5. And a flow drilling screw connection process (FDS connection process) is adopted between the upper cover plate 1 and the battery box body.
As a specific embodiment, the utility model provides a steel-aluminum composite advanced battery box body which comprises a cover plate 1, a left side beam 2, a right side beam 3, a front side beam 4, a rear side beam 5, a cross beam 6, a longitudinal beam 7, a bottom plate 8 and the like; the battery box body is an irregular cuboid, and the external dimension of the battery box body is 2000mm in length, 1550mm in width and 160mm in height. The upper cover plate 1 is obtained by punching and forming a common mild steel plate material DC03, the thickness is 0.65mm, the structure is mainly planar, and reinforcing ribs are added to improve the integral rigidity of the cover plate. The left side beam 2 and the right side beam 3 are extruded and formed by adopting wrought aluminum alloy materials, the thicknesses of metal plates are respectively 1.5mm, 1.8mm, 2.0mm and 2.5mm, the external profiles of the metal plates adopt L-shaped structures, and the internal cavities are rectangular, trapezoidal and triangular cavities. The front side beam 4 and the rear side beam 5 are formed by extrusion of a wrought aluminum alloy material, the thickness of a metal plate is 1.5mm and 1.8mm, the external contour of the metal plate adopts a C-shaped structure, and the internal cavity is divided into a rectangular cavity and a triangular cavity. The cross beam 6 is formed by punching and molding HC980QP advanced high-strength steel, the thickness is 1.2mm, and one cross beam is connected with the side beams through a flange surface and a flow drill screw connection process (FDS connection process), is arranged in the middle of the battery box body and is near the position of the middle upright post of the vehicle body. The longitudinal beams 7 are formed by punching and molding HC980QP advanced high-strength steel, the thickness is 1.2mm, and the two longitudinal beams are connected with the front side beam 4 and the rear side beam 5 through flange surfaces by a flow drilling screw connection process (FDS connection process). The bottom plate 8 is formed by extruding a wrought aluminum alloy material, and the thickness is 2.5 mm. The bottom plate 8, the left beam 2, the right beam 3, the front beam 4 and the rear beam 5 are connected by a friction stir welding process to manufacture the battery box body. And a Flow Drilling Screw (FDS) connecting process is adopted between the upper cover plate 1 and the battery box body.
In conclusion, the battery box body fully exerts the performance characteristics of the mild steel plate, the advanced high-strength steel and the extrusion deformation aluminum alloy material, and is reasonably applied to the battery box body parts. Compared with the full aluminum battery box body with the same size, the weight is reduced by 16.5 percent, and the cost is reduced by 22.6 percent. Meanwhile, in order to effectively improve the air tightness and the water resistance of the battery box body, the integral connection is realized by adopting the friction stir welding connection process. The connection is realized by aiming at the connection mode among different materials, namely the connection process of Flow Drilling Screws (FDS) adopted among the cover plate, the cross beam and the battery box body. The strength of the connecting points is guaranteed, the integral rigidity of the box body can be guaranteed, and the collision safety performance is met.
The present invention is not limited to the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be construed as equivalents and are included in the scope of the present invention.
Claims (10)
1. The utility model provides a novel battery box structure suitable for pure electric vehicles, its characterized in that: comprises an upper cover plate (1), a left side beam (2), a right side beam (3), a front side beam (4), a rear side beam (5), a cross beam (6), a longitudinal beam (7) and a bottom plate (8), wherein the left side beam (2) and the right side beam (3) are arranged in a bilateral symmetry way, the front side beam (4) and the rear side beam (5) are arranged in a front-back symmetry way, the left side beam (2), the right side beam (3), the front side beam (4) and the rear side beam (5) enclose a synthetic rectangular frame, the rectangular frame is arranged on the bottom plate (8), the rectangular frame and the bottom plate (8) form a battery box body, the cross beam (6) is arranged between the left side beam (2) and the right side beam (3), the longitudinal beam (7) is arranged between the front side beam (4) and the rear side beam (5), the cross beam (6) and the longitudinal beam (7) are arranged in a vertical way, the top end of the battery box body is covered with the upper cover plate (1), the battery box body is composed of a battery box body, an upper cover plate (1), a cross beam (6) and a longitudinal beam (7), the battery box body is made of aluminum alloy materials, and the upper cover plate (1), the cross beam (6) and the longitudinal beam (7) are made of steel materials.
2. The novel battery box structure suitable for pure electric vehicles according to claim 1, characterized in that: the upper cover plate (1) is formed by stamping common mild steel plate materials, the thickness of the upper cover plate (1) is 0.5-0.7mm, the upper cover plate (1) is in a plane plate shape, and reinforcing ribs are arranged on the upper cover plate (1).
3. The novel battery box structure suitable for pure electric vehicles according to claim 1, characterized in that: the left side beam (2) and the right side beam (3) are made of aluminum alloy materials and are extruded and formed in an extrusion mode, the thickness of the left side beam (2) and the thickness of the right side beam (3) are 1.5-2.2mm, the longitudinal sections of the left side beam (2) and the right side beam (3) are L-shaped, and the inner cavity is equally divided into a plurality of rectangular, trapezoidal or triangular cavities.
4. The novel battery box structure suitable for pure electric vehicles according to claim 1, characterized in that: the front side beam (4) and the rear side beam (5) are formed by extrusion of aluminum alloy materials, the thickness of each of the front side beam (4) and the rear side beam (5) is 1.5-2.2mm, the longitudinal sections of the front side beam (4) and the rear side beam (5) are C-shaped, and the inner cavities of the front side beam and the rear side beam are equally divided into a plurality of rectangular or triangular cavities.
5. The novel battery box structure suitable for pure electric vehicles according to claim 1, characterized in that: the cross beam (6) and the longitudinal beam (7) are formed by punching HC980QP or HC980DP high-strength steel, and the thickness of each cross beam is 1.2-1.8 mm.
6. The novel battery box structure suitable for pure electric vehicles as claimed in claim 5, wherein: the number of the cross beams (6) is 1-3, and the cross beams (6) are distributed at the positions of the middle upright columns of the automobile body.
7. The novel battery box structure suitable for pure electric vehicles according to claim 1, characterized in that: the bottom plate (8) is formed by extrusion of an aluminum alloy material, and the thickness of the bottom plate (8) is 2.5-3.5 mm.
8. The novel battery box structure suitable for pure electric vehicles according to claim 1, characterized in that: the battery box body is formed by connecting a bottom plate (8) with a left side beam (2), a right side beam (3), a front side beam (4) and a rear side beam (5) through a friction stir welding process.
9. The novel battery box structure suitable for pure electric vehicles according to claim 1, characterized in that: and flow drilling screw connection processes are adopted between the cross beam (6) and the left side beam (2) and the right side beam (3), between the longitudinal beam (7) and the front side beam (4) and the rear side beam (5), and between the upper cover plate (1) and the battery box body.
10. The novel battery box structure suitable for pure electric vehicles according to claim 1, characterized in that: the battery box is irregular cuboid, and the external dimension scope of battery box is: the length is 1500-.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121407869.XU CN215816168U (en) | 2021-06-23 | 2021-06-23 | Novel battery box structure suitable for pure electric vehicles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121407869.XU CN215816168U (en) | 2021-06-23 | 2021-06-23 | Novel battery box structure suitable for pure electric vehicles |
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| Publication Number | Publication Date |
|---|---|
| CN215816168U true CN215816168U (en) | 2022-02-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121407869.XU Active CN215816168U (en) | 2021-06-23 | 2021-06-23 | Novel battery box structure suitable for pure electric vehicles |
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| CN (1) | CN215816168U (en) |
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2021
- 2021-06-23 CN CN202121407869.XU patent/CN215816168U/en active Active
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