CN212517379U - Lightweight battery pack box - Google Patents
Lightweight battery pack box Download PDFInfo
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- CN212517379U CN212517379U CN202021501199.3U CN202021501199U CN212517379U CN 212517379 U CN212517379 U CN 212517379U CN 202021501199 U CN202021501199 U CN 202021501199U CN 212517379 U CN212517379 U CN 212517379U
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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
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Abstract
The utility model provides a lightweight battery package box, is including the battery box and the top cap that are connected, the battery box includes outer skeleton, inner frame and covering, the covering includes bottom cover plate, right side apron, front shroud, left side apron and back shroud, the top surface of bottom cover plate is connected with the bottom surface of inner frame, and the bottom surface of bottom cover plate is connected with the top surface of outer skeleton, right side apron, front shroud, left side apron, back shroud are connected with the right flank, leading flank, left surface, the trailing flank one-to-one of inner frame respectively, the top surface of right side apron, front shroud, left side apron, back shroud all is provided with down the turn-ups, the bottom surface of top cap is provided with the turn-ups that are connected with down the turn-ups, the side of right side apron, left side apron all is connected with the side mount pad, the side of back shroud is connected with the back mount pad, the lightening hole has all been seted. This design is not only light in weight, and structural strength is high moreover.
Description
Technical Field
The utility model relates to an electric automobile field especially relates to a lightweight battery package box, mainly is applicable to weight reduction, improves structural strength.
Background
The lightweight of the automobile is to reduce the overall quality of the automobile as much as possible on the premise of ensuring the strength and the safety performance of the automobile, thereby improving the dynamic property of the automobile and reducing the energy consumption. Currently, the light weight of automobiles has become a trend of the development of automobiles in the world due to the demands for environmental protection and energy saving. The power battery is one of the core components of the new energy electric automobile, is a power source of the new energy electric automobile, and is a short plate for restricting the development of the electric automobile. One of the problems of the conventional power battery is low energy density and large mass ratio of the whole vehicle. The structure of battery package box not only needs to satisfy the demand of whole car appearance installation, but also needs to satisfy the requirement of adorning enough batteries, plays effects such as loading, mechanical protection, dustproof and waterproof to whole battery system. Carry out lightweight design to the battery package box, promote the energy density of power battery package, to improving electric automobile's dynamic nature, reduce energy consumption and have the significance. At present, in order to pursue high energy density, a plurality of manufacturers sacrifice the structural strength of the battery pack box body, which is one-sided and is unfavorable for the performance of the whole vehicle.
Disclosure of Invention
The utility model aims at overcoming the defect and the problem that weight is heavy, structural strength is low that exist among the prior art, providing a lightweight battery package box that light in weight, structural strength are high.
In order to achieve the above purpose, the technical solution of the utility model is that: the utility model provides a lightweight battery package box, is including the battery box and the top cap that are connected, the battery box includes outer skeleton, inner frame and covering, the covering includes bottom cover plate, right side apron, front shroud, left side apron and back shroud, the top surface of bottom cover plate is connected with the bottom surface of inner frame, and the bottom surface of bottom cover plate is connected with the top surface of outer skeleton, right side apron, front shroud, left side apron, back shroud are connected with the right flank, leading flank, left surface, the trailing flank one-to-one of inner frame respectively, the top surface of right side apron, front shroud, left side apron, back shroud all is provided with down the turn-ups, the bottom surface of top cap is provided with the turn-ups that are connected with down the turn-ups, the side of right side apron, left side apron all is connected with the side mount pad, the side of back shroud is connected with the back mount pad, the lightening hole has all been seted.
The outer framework comprises a plurality of longitudinal beams and a plurality of cross beams which are arranged in a criss-cross mode, and lightening holes are formed in the longitudinal beams and the cross beams.
The front end of longeron is provided with the preceding riser that is connected with the front shroud, and the rear end is provided with the back riser that is connected with the back shroud, is provided with the after-poppet that is Z shape structure on the after-poppet, and the after-poppet is connected with the after-mounting seat, the left end of crossbeam is provided with the left riser that is connected with the left side apron, and the right-hand member is provided with the right riser that is connected with the right side apron, all is provided with the collateral branch frame that is Z shape structure on left riser, the right riser, and the collateral branch frame is connected with the side-mounting seat.
The sections of the longitudinal beams and the cross beams are in omega shapes.
And an opening is formed in the part, located at the lap joint of the longitudinal beam and the cross beam, of the longitudinal beam.
The inner frame comprises a frame, longitudinal reinforcing beams and transverse reinforcing beams, the frame is formed by sequentially surrounding a right frame, a front frame, a left frame and a rear frame, a plurality of transverse reinforcing beams are connected between the right frame and the left frame, the longitudinal reinforcing beams are connected between the front frame and the transverse reinforcing beams, between two adjacent transverse reinforcing beams and between the rear frame and the transverse reinforcing beams, and lightening holes are formed in the right frame, the front frame, the left frame, the rear frame, the transverse reinforcing beams and the longitudinal reinforcing beams.
The right frame, the front frame, the left frame and the rear frame are all Z-shaped bending structures, extension planes connected with the bottom cover plate are arranged in the horizontal direction of the right frame, the front frame, the left frame and the rear frame, and extension planes respectively connected with the right cover plate, the front cover plate, the left cover plate and the rear cover plate are arranged in the vertical direction of the right frame, the front frame, the left frame and the rear frame.
The cross sections of the transverse reinforcing beam and the longitudinal reinforcing beam are in omega shapes.
The plurality of longitudinal reinforcing beams are arranged in a straight line shape.
And a sealing gasket is arranged between the upper flanging and the lower flanging.
Compared with the prior art, the beneficial effects of the utility model are that:
1. the utility model relates to a top surface of bottom cover plate in lightweight battery pack box body is connected with the bottom surface of inner frame, the bottom surface of bottom cover plate is connected with the top surface of outer frame, right side cover plate, front cover plate, left side cover plate, back cover plate are connected with the right side, front side, left side, back side of inner frame one-to-one respectively, the side of right side cover plate, left cover plate all is connected with the side mount pad, the side of back cover plate is connected with the back mount pad, outer frame, inner frame have all seted up lightening hole; the battery box of above-mentioned structure has reduced the dead weight when promoting structural strength. Therefore, the utility model discloses light in weight, structural strength are high.
2. The outer framework in the lightweight battery pack box body comprises a plurality of longitudinal beams and a plurality of cross beams which are arranged in a criss-cross manner, and the outer framework with the structure has compact and reasonable structure and high structural strength; the front end of the longitudinal beam is provided with a front vertical plate connected with a front cover plate, the rear end of the longitudinal beam is provided with a rear vertical plate connected with a rear cover plate, the rear vertical plate is provided with a rear support in a Z-shaped structure, the rear support is connected with a rear mounting seat, the left end of the cross beam is provided with a left vertical plate connected with a left cover plate, the right end of the cross beam is provided with a right vertical plate connected with a right cover plate, the left vertical plate and the right vertical plate are both provided with side supports in Z-shaped structures, and the side supports are connected with side mounting seats; the sections of the longitudinal beams and the transverse beams are in omega shapes, so that the outer framework and the skin are firmly connected and are easy and convenient to assemble; the part of the longitudinal beam, which is positioned at the lap joint of the longitudinal beam and the cross beam, is provided with an opening, so that the longitudinal beam and the cross beam can be conveniently assembled. Therefore, the utility model discloses compact structure, structural strength are high, the assembly is simple and convenient, firm in connection.
3. The utility model relates to a lightweight battery pack box body middle frame is formed by surrounding a right side frame, a front side frame, a left side frame and a rear side frame in sequence, a plurality of horizontal reinforcing beams are connected between the right side frame and the left side frame, longitudinal reinforcing beams are connected between the front side frame and the horizontal reinforcing beams, between two adjacent horizontal reinforcing beams and between the rear side frame and the horizontal reinforcing beams, the inner frame with the structure is compact and reasonable in structure and high in structural strength; the right frame, the front frame, the left frame and the rear frame are Z-shaped bending structures, and extension planes are arranged in the horizontal direction and the vertical direction of the right frame, the front frame, the left frame and the rear frame, so that the strength of the inner frame structure is high, the inner frame and the skin are firmly connected, and the assembly is convenient; the cross sections of the transverse reinforcing beam and the longitudinal reinforcing beam are in omega shapes, so that the inner framework and the skin are firmly connected and are easy and convenient to assemble; a plurality of longitudinal reinforcing beams are arranged in a straight line shape, so that the strength of the inner framework structure is high. Therefore, the utility model discloses compact structure is reasonable, structural strength is high, firm in connection, assembly are simple and convenient.
4. The utility model relates to a lightweight battery package box is provided with sealed the pad between upper and lower turn-ups, can effectively guarantee water proofness and gas tightness. Therefore, the utility model discloses the leakproofness is good.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic structural view of the battery case of fig. 1.
Fig. 3 is a schematic structural diagram of the exoskeleton of fig. 2.
Fig. 4 is a schematic structural view of the stringer in fig. 3.
Fig. 5 is a structural schematic view of a cross section of the stringer in fig. 4.
Fig. 6 is a schematic view of an assembly structure of the rear bracket and the rear mounting seat in fig. 4.
Fig. 7 is a schematic structural view of the cross beam of fig. 3.
Fig. 8 is a structural schematic view of a cross-section of the beam of fig. 7.
Fig. 9 is a schematic view of the structure of the endoskeleton of fig. 2.
In the figure: the battery box comprises a battery box 1, an outer framework 11, longitudinal beams 111, cross beams 112, front vertical plates 113, rear vertical plates 114, rear supports 115, right vertical plates 116, side supports 117, openings 118, an inner framework 12, a right frame 121, a front frame 122, a left frame 123, a rear frame 124, longitudinal reinforcing beams 125, transverse reinforcing beams 126, a skin 13, a bottom cover plate 131, a right cover plate 132, a front cover plate 133, a left cover plate 134, a rear cover plate 135, downward flanges 136, lightening holes 14, a top cover 2, upward flanges 21, side mounting seats 3 and rear mounting seats 4.
Detailed Description
The present invention will be described in further detail with reference to the following description and embodiments in conjunction with the accompanying drawings.
Referring to fig. 1 to 9, a lightweight battery pack case comprises a battery case 1 and a top cover 2 which are connected, wherein the battery case 1 comprises an outer frame 11, an inner frame 12 and a skin 13, the skin 13 comprises a bottom cover plate 131, a right cover plate 132, a front cover plate 133, a left cover plate 134 and a rear cover plate 135, the top surface of the bottom cover plate 131 is connected with the bottom surface of the inner frame 12, the bottom surface of the bottom cover plate 131 is connected with the top surface of the outer frame 11, the right cover plate 132, the front cover plate 133, the left cover plate 134 and the rear cover plate 135 are respectively connected with the right side surface, the front side surface, the left side surface and the rear side surface of the inner frame 12 in a one-to-one correspondence manner, the top surfaces of the right cover plate 132, the front cover plate 133, the left cover plate 134 and the rear cover plate 135 are all provided with a lower flange 136, the bottom surface of the top cover 2 is provided with an upper flange 21 connected with the, the side of the rear cover plate 135 is connected with a rear mounting seat 4, and the outer framework 11 and the inner framework 12 are both provided with lightening holes 14.
The outer framework 11 comprises a plurality of longitudinal beams 111 and a plurality of cross beams 112 which are arranged in a criss-cross mode, and weight-reducing holes 14 are formed in the longitudinal beams 111 and the cross beams 112.
The front end of longeron 111 is provided with preceding riser 113 that is connected with front shroud 133, and the rear end is provided with the back riser 114 that is connected with back shroud 135, is provided with the rear support 115 that is the Z shape structure on the back riser 114, and rear support 115 is connected with back mount pad 4, the left end of crossbeam 112 is provided with the left riser that is connected with left cover plate 134, and the right-hand member is provided with the right riser 116 that is connected with right cover plate 132, all is provided with the collateral branch frame 117 that is the Z shape structure on left riser, the right riser 116, and collateral branch frame 117 is connected with side mount pad 3.
The sections of the longitudinal beams 111 and the cross beams 112 are both omega-shaped.
An opening 118 is formed in the longitudinal beam 111 at the joint of the longitudinal beam 111 and the cross beam 112.
The inner frame 12 comprises a frame, a longitudinal reinforcing beam 125 and a transverse reinforcing beam 126, the frame is formed by sequentially surrounding a right frame 121, a front frame 122, a left frame 123 and a rear frame 124, a plurality of transverse reinforcing beams 126 are connected between the right frame 121 and the left frame 123, the longitudinal reinforcing beams 125 are connected between the front frame 122 and the transverse reinforcing beams 126, between two adjacent transverse reinforcing beams 126 and between the rear frame 124 and the transverse reinforcing beams 126, and lightening holes 14 are formed in the right frame 121, the front frame 122, the left frame 123, the rear frame 124, the transverse reinforcing beams 126 and the longitudinal reinforcing beams 125.
The right frame 121, the front frame 122, the left frame 123 and the rear frame 124 are all of a Z-shaped bending structure, the right frame 121, the front frame 122, the left frame 123 and the rear frame 124 are provided with extension planes connected with the bottom cover plate 131 in the horizontal direction, and the right frame 121, the front frame 122, the left frame 123 and the rear frame 124 are provided with extension planes respectively connected with the right cover plate 132, the front cover plate 133, the left cover plate 134 and the rear cover plate 135 in the vertical direction.
The cross sections of the transverse reinforcing beam 126 and the longitudinal reinforcing beam 125 are both omega-shaped.
The plurality of longitudinal reinforcing beams 125 are arranged in a line.
A sealing gasket is arranged between the upper flange 21 and the lower flange 136.
The principle of the utility model is explained as follows:
the skin and the top cover are respectively formed by punching a whole steel plate, and the joint is fully welded; the edges of the skin and the top cover are provided with flanges and bolted at the flanges, and the joints are provided with sealing gaskets, so that the water tightness and the air tightness can be effectively ensured.
The components of the outer framework and the inner framework are uniformly perforated, and the weight is reduced as much as possible on the premise of ensuring the strength and the rigidity of the box body.
The outer framework longitudinal beam and the outer framework cross beam are both formed by stamping steel plates, materials are removed during stamping to form lightening holes, the cross sections of the lightening holes are in an omega shape, the outer framework cross beam is in a straight-through structure, and openings spliced with the outer framework cross beam are punched in the outer framework longitudinal beam.
Each part is punched and formed in advance, the outer framework and the inner framework are respectively spliced and welded into a component assembly, and then the component assembly is combined with the skin in a combining way; after molding, respectively welding with the side mounting seat and the rear mounting seat; and assembling the finished product together with the top cover and related accessories.
The light battery pack box body is compact in structure and light in weight, the inner framework structure and the outer framework structure are uniformly perforated, and the weight is reduced; compact and reasonable structure, higher strength and easy processing and manufacturing.
Example 1:
referring to fig. 1 and 2, a lightweight battery pack case comprises a battery case 1 and a top cover 2 which are connected, wherein the battery case 1 comprises an outer frame 11, an inner frame 12 and a skin 13, the skin 13 comprises a bottom cover plate 131, a right cover plate 132, a front cover plate 133, a left cover plate 134 and a rear cover plate 135, the top surface of the bottom cover plate 131 is connected with the bottom surface of the inner frame 12, the bottom surface of the bottom cover plate 131 is connected with the top surface of the outer frame 11, the right cover plate 132, the front cover plate 133, the left cover plate 134 and the rear cover plate 135 are respectively connected with the right side surface, the front side surface, the left side surface and the rear side surface of the inner frame 12 in a one-to-one correspondence manner, the top surfaces of the right cover plate 132, the front cover plate 133, the left cover plate 134 and the rear cover plate 135 are all provided with a lower flange 136, the bottom surface of the top cover 2 is provided with an upper, the side surfaces of the right cover plate 132 and the left cover plate 134 are both connected with a side mounting seat 3, the side surface of the rear cover plate 135 is connected with a rear mounting seat 4, and lightening holes 14 are formed in the outer framework 11 and the inner framework 12.
Example 2:
the basic contents are the same as example 1, except that:
referring to fig. 1 to 8, the outer frame 11 includes a plurality of longitudinal beams 111 and a plurality of cross beams 112 arranged in a criss-cross manner, and weight-reducing holes 14 are formed in both the longitudinal beams 111 and the cross beams 112; the front end of the longitudinal beam 111 is provided with a front vertical plate 113 connected with a front cover plate 133, the rear end of the longitudinal beam is provided with a rear vertical plate 114 connected with a rear cover plate 135, the rear vertical plate 114 is provided with a rear support 115 in a Z-shaped structure, the rear support 115 is connected with a rear mounting seat 4, the left end of the cross beam 112 is provided with a left vertical plate connected with a left cover plate 134, the right end of the cross beam is provided with a right vertical plate 116 connected with a right cover plate 132, the left vertical plate and the right vertical plate 116 are both provided with side supports 117 in Z-shaped structures, and the side supports 117 are connected with side mounting seats 3; the sections of the longitudinal beams 111 and the cross beams 112 are both omega-shaped; an opening 118 is formed in the longitudinal beam 111 at the joint of the longitudinal beam 111 and the cross beam 112.
Example 3:
the basic contents are the same as example 1, except that:
referring to fig. 2 and 9, the inner frame 12 includes a frame, longitudinal reinforcing beams 125 and transverse reinforcing beams 126, the frame is formed by sequentially surrounding a right frame 121, a front frame 122, a left frame 123 and a rear frame 124, a plurality of transverse reinforcing beams 126 are connected between the right frame 121 and the left frame 123, the longitudinal reinforcing beams 125 are connected between the front frame 122 and the transverse reinforcing beams 126, between two adjacent transverse reinforcing beams 126, and between the rear frame 124 and the transverse reinforcing beams 126, and the weight-reducing holes 14 are formed in the right frame 121, the front frame 122, the left frame 123, the rear frame 124, the transverse reinforcing beams 126 and the longitudinal reinforcing beams 125; the right frame 121, the front frame 122, the left frame 123 and the rear frame 124 are all Z-shaped bending structures, the right frame 121, the front frame 122, the left frame 123 and the rear frame 124 are provided with extension planes connected with the bottom cover plate 131 in the horizontal direction, and the right frame 121, the front frame 122, the left frame 123 and the rear frame 124 are provided with extension planes respectively connected with the right cover plate 132, the front cover plate 133, the left cover plate 134 and the rear cover plate 135 in the vertical direction; the cross sections of the transverse reinforcing beam 126 and the longitudinal reinforcing beam 125 are both omega-shaped; the plurality of longitudinal reinforcing beams 125 are arranged in a line.
Claims (10)
1. The utility model provides a lightweight battery package box, includes battery box (1) and top cap (2) that are connected, its characterized in that: the battery box (1) comprises an outer skeleton (11), an inner skeleton (12) and a skin (13), wherein the skin (13) comprises a bottom cover plate (131), a right cover plate (132), a front cover plate (133), a left cover plate (134) and a rear cover plate (135), the top surface of the bottom cover plate (131) is connected with the bottom surface of the inner skeleton (12), the bottom surface of the bottom cover plate (131) is connected with the top surface of the outer skeleton (11), the right cover plate (132), the front cover plate (133), the left cover plate (134) and the rear cover plate (135) are respectively connected with the right side surface, the front side surface, the left side surface and the rear side surface of the inner skeleton (12) in a one-to-one correspondence manner, the top surfaces of the right cover plate (132), the front cover plate (133), the left cover plate (134) and the rear cover plate (135) are respectively provided with lower flanging (136), the bottom surface of the top cover (, the side of the right cover plate (132) and the side of the left cover plate (134) are both connected with side mounting seats (3), the side of the rear cover plate (135) is connected with a rear mounting seat (4), and lightening holes (14) are formed in the outer framework (11) and the inner framework (12).
2. The light-weight battery pack case according to claim 1, characterized in that: the outer framework (11) comprises a plurality of longitudinal beams (111) and a plurality of cross beams (112) which are arranged in a criss-cross mode, and lightening holes (14) are formed in the longitudinal beams (111) and the cross beams (112).
3. The light-weight battery pack case according to claim 2, characterized in that: the front end of longeron (111) is provided with preceding riser (113) that are connected with front shroud (133), and the rear end is provided with back riser (114) that are connected with back shroud (135), is provided with after-poppet (115) that are Z shape structure on back riser (114), and after-poppet (115) are connected with back mount pad (4), the left end of crossbeam (112) is provided with the left riser that is connected with left apron (134), and the right-hand member is provided with right riser (116) that are connected with right apron (132), all is provided with side support (117) that are Z shape structure on left riser, right riser (116), and side support (117) are connected with side mount pad (3).
4. The light-weight battery pack case according to claim 2, characterized in that: the sections of the longitudinal beams (111) and the cross beams (112) are in omega shapes.
5. The light-weight battery pack case according to claim 2, characterized in that: an opening (118) is formed in the part, located at the joint of the longitudinal beam (111) and the cross beam (112), of the longitudinal beam (111).
6. The light-weight battery pack case according to any one of claims 1 to 5, wherein: the inner frame (12) comprises a frame, longitudinal reinforcing beams (125) and transverse reinforcing beams (126), the frame is formed by sequentially surrounding a right frame (121), a front frame (122), a left frame (123) and a rear frame (124), a plurality of transverse reinforcing beams (126) are connected between the right frame (121) and the left frame (123), the longitudinal reinforcing beams (125) are connected between the front frame (122) and the transverse reinforcing beams (126), between two adjacent transverse reinforcing beams (126) and between the rear frame (124) and the transverse reinforcing beams (126), and lightening holes (14) are formed in the right frame (121), the front frame (122), the left frame (123), the rear frame (124), the transverse reinforcing beams (126) and the longitudinal reinforcing beams (125).
7. The light-weight battery pack case according to claim 6, wherein: the right frame (121), the front frame (122), the left frame (123) and the rear frame (124) are all Z-shaped bending structures, extension planes connected with the bottom cover plate (131) are horizontally arranged on the right frame (121), the front frame (122), the left frame (123) and the rear frame (124), and extension planes respectively connected with the right cover plate (132), the front cover plate (133), the left cover plate (134) and the rear cover plate (135) are vertically arranged on the right frame (121), the front frame (122), the left frame (123) and the rear frame (124).
8. The light-weight battery pack case according to claim 6, wherein: the cross sections of the transverse reinforcing beam (126) and the longitudinal reinforcing beam (125) are in omega shapes.
9. The light-weight battery pack case according to claim 6, wherein: the longitudinal reinforcing beams (125) are arranged in a straight line shape.
10. The light-weight battery pack case according to claim 1, characterized in that: and a sealing gasket is arranged between the upper flanging (21) and the lower flanging (136).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021501199.3U CN212517379U (en) | 2020-07-27 | 2020-07-27 | Lightweight battery pack box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021501199.3U CN212517379U (en) | 2020-07-27 | 2020-07-27 | Lightweight battery pack box |
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| Publication Number | Publication Date |
|---|---|
| CN212517379U true CN212517379U (en) | 2021-02-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202021501199.3U Active CN212517379U (en) | 2020-07-27 | 2020-07-27 | Lightweight battery pack box |
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| CN (1) | CN212517379U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112959879A (en) * | 2021-03-30 | 2021-06-15 | 重庆长安汽车股份有限公司 | Battery package mounting structure and vehicle |
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2020
- 2020-07-27 CN CN202021501199.3U patent/CN212517379U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112959879A (en) * | 2021-03-30 | 2021-06-15 | 重庆长安汽车股份有限公司 | Battery package mounting structure and vehicle |
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