CN112038525A - Anti-extrusion battery lower box body and preparation method thereof - Google Patents
Anti-extrusion battery lower box body and preparation method thereof Download PDFInfo
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/61—Types of temperature control
- H01M10/613—Cooling or keeping cold
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/62—Heating or cooling; Temperature control specially adapted for specific applications
- H01M10/625—Vehicles
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/655—Solid structures for heat exchange or heat conduction
- H01M10/6554—Rods or plates
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/655—Solid structures for heat exchange or heat conduction
- H01M10/6556—Solid parts with flow channel passages or pipes for heat exchange
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
- H01M10/6567—Liquids
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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 invention discloses an anti-extrusion battery lower box body and a preparation method thereof, wherein the lower box body comprises a frame beam assembly, a lower bottom plate with a water cooling plate and a cross beam, a battery module with a suspension loop end plate, a pipeline consisting of a tee joint/a hose/a pipe joint and a riveting standard part; the frame beam assembly comprises left and right main bearing side beams, front and rear side beams, corner side beams and a bearing middle beam; the bottom of each of the left main bearing side beam, the right main bearing side beam, the front side beam, the rear side beam and the corner side beam is provided with a square groove, two ends of the cross beam of the lower bottom plate are provided with bosses lapped with the square grooves, and the middle of the cross beam of the lower bottom plate is provided with a U-shaped opening lapped with the bearing middle beam. The invention strengthens the integral structural strength and rigidity of the box body while lightening the battery system, and improves the pressure resistance and safety of the battery system.
Description
Technical Field
The invention belongs to the field of power batteries, and particularly relates to an anti-extrusion battery lower box body and a preparation method thereof.
Background
The lithium ion battery has the advantages of high specific capacity, good reversibility, long cycle life and the like, and is an ideal energy storage device for the electric passenger vehicle. The electric vehicle based on traditional fuel vehicle transformation mostly adopts a battery system with the maximized number of battery modules arranged in a limited chassis space in order to improve the endurance mileage of the whole vehicle, so that the requirement on the structural strength of a power battery system is high, and the traditional scheme mostly adopts a casting/metal plate mechanical integrated structure, so that the battery system is heavy in weight, high in cost, complex in assembly process and low in space utilization rate. Meanwhile, the frame beam in the prior art is generally designed as an independent part, is attached to the bottom plate of the box body in a welding or screwing mode, and cannot bear higher acting force, and the frame beam and the inner beam of the box body of the structure are simple, so that the structural strength of the battery system is reduced, the anti-extrusion and anti-impact capabilities are insufficient, and the reliability is poor.
Chinese patent CN107742683A discloses a battery box for an electric vehicle, which comprises a box body and a box cover, wherein the box body comprises a bottom plate and a frame made of aluminum alloy cavity profiles, and an internal supporting beam; welding the daughter board made of five aluminum alloy cavity extruded profiles by friction stir welding, and then performing machining to form a bottom plate; the frame is welded through CMT, and grinding machine processing is carried out after welding is finished; and then, welding the bottom plate and the frame by friction stir welding, welding a support beam and other accessories inside the box body after the welding is finished, and then installing rivet nuts and steel wire sleeves. Frame roof beam and inside roof beam type are simple among the above-mentioned scheme, do not have special construction and strengthen the design, lead to battery system structural strength to reduce, and anti extrusion and shock resistance are not enough, and the reliability is poor.
Chinese patent CN209282267U discloses a lower case of a battery pack, comprising: a frame-shaped lower box peripheral frame (box body main body) is formed, and bearing surfaces (bearing parts) extending towards the inner side of a frame-shaped opening are arranged on opposite sides of the periphery of the lower box peripheral frame 1; and the lower box body mounting beam (mounting beam) is erected on the bearing surfaces of two opposite side edges of the peripheral frame of the lower box body. Simple welding through installation roof beam and frame all around forms wholly in the above-mentioned scheme, and frame construction's formation does not have special structure and strengthens the design, therefore the structural strength of battery package reduces, and anti extrusion and shock resistance are not enough.
Disclosure of Invention
The invention aims to provide an anti-extrusion lower battery box and a preparation method thereof.
The technical scheme adopted by the invention is as follows:
an anti-extrusion battery lower box body comprises a frame beam assembly, a lower bottom plate with a water cooling plate and a cross beam, a battery module with a suspension loop end plate, a pipeline consisting of a tee joint/a hose/a pipe joint and a riveting standard part; the frame beam assembly comprises left and right main bearing side beams, front and rear side beams, corner side beams and a bearing middle beam; the bottom of each of the left main bearing side beam, the right main bearing side beam, the front side beam, the rear side beam and the corner side beam is provided with a square groove, two ends of the cross beam of the lower bottom plate are provided with bosses lapped with the square grooves, and the middle of the cross beam of the lower bottom plate is provided with a U-shaped opening lapped with the bearing middle beam.
Furthermore, the left main bearing side beam and the right main bearing side beam comprise inner side cavity profiles protruding towards the inner sides of the frame beam assemblies and used for being connected with end plate hangers of the battery modules; the left side and the right side of the bearing middle beam are respectively provided with a left protruding part and a right protruding part which are used for being connected with end plate hangers of the battery module; the bearing middle beam is correspondingly provided with a cutting groove in a U-shaped opening area of the cross beam of the lower bottom plate, and the left protruding part and the right protruding part of the bearing middle beam are discontinuously arranged, so that the bearing middle beam can be conveniently lapped with the U-shaped opening of the cross beam of the lower bottom plate.
Furthermore, the inner cavity profiles of the left and right main bearing side beams are provided with cutting grooves at intervals and are discontinuously arranged.
Furthermore, the left main bearing side beam and the right main bearing side beam adopt inner/middle/outer structural aluminum profiles; the inner side cavity section bar is used for being connected with an end plate hanging lug of the battery module 3; the middle cavity section is the main body part of the left main bearing side beam and the right main bearing side beam; the outer side cavity section can improve the Y-direction and Z-direction pressure resistance of the side wall of the box body in the horizontal plane, and a waist-shaped hole used for being assembled and positioned with the whole vehicle is arranged on the outer side cavity section.
Furthermore, longitudinal reinforcing ribs are uniformly distributed on the inner cavity section and the outer cavity section of the left main bearing side beam and the right main bearing side beam, and transverse reinforcing ribs and oblique reinforcing ribs are distributed on the middle cavity section; reinforcing ribs are uniformly distributed among the inner cavity profile, the outer cavity profile and the middle cavity profile.
Further, the section shapes of the aluminum profiles adopted by the front and rear side beams and the corner side beams are the same as the section shape of the middle cavity profile of the left and right main bearing side beams.
Further, the cross section of the cavity of the load-bearing center sill comprises an upper rectangular section part containing reinforcing ribs, a middle left protruding part and a middle right protruding part comprising longitudinal reinforcing ribs, and a lower triangular section and a small rectangular section part; a plurality of oblique and longitudinal reinforcing ribs are arranged on the whole bearing middle beam.
Furthermore, one end of the bearing middle beam in the X direction is connected in a mode that an inverted U-shaped aluminum profile nested with the rectangular section above the bearing middle beam is adopted to carry out fine-adjustable movable connection in the X direction, the inverted U-shaped aluminum profile is positioned on the rear edge beam in the X direction, and the other end of the bearing middle beam in the X direction is not nested and connected, so that fine adjustment of the bearing middle beam in the X direction is realized, and the accuracy of hole positions of mounting holes of a left protruding part and a right protruding part of the bearing middle beam and mounting holes of lugs of the battery module is guaranteed.
Furthermore, the cross section of the cavity of the cross beam of the lower bottom plate is provided with transverse and oblique reinforcing ribs.
Further, the width of the cutting groove of the bearing middle beam is larger than the thickness of the cross beam of the lower bottom plate.
Further, the areas formed by the corner edge beams and the front edge beam and the cross beam of the immediately adjacent lower base plate are arranged with circuit elements including high voltage distribution boxes.
According to the preparation method of the anti-extrusion battery lower box body, the lower bottom plate, the left main bearing side beam, the right main bearing side beam, the front side beam, the rear side beam, the corner side beam and the bearing middle beam are welded into a whole to form the integrated power battery lower box body.
The invention has the beneficial effects that:
the invention strengthens the integral structural strength and rigidity of the box body while lightening the battery system, and improves the pressure resistance and safety of the battery system.
Drawings
Fig. 1 is an exploded view of the lower case of the anti-extrusion battery in the embodiment of the invention.
Fig. 2 is a schematic structural view of a frame beam assembly in an embodiment of the present invention.
Figure 3 is a cross-sectional view of the aluminum profile of the left and right main load-bearing side rails in an embodiment of the present invention.
Fig. 4 is a sectional view of an aluminum profile of the front and rear side rails and corner side rails in an embodiment of the present invention.
Figure 5 is a cross-sectional view of an aluminum profile of a load-bearing center sill in an embodiment of the present invention.
Fig. 6 is a front view of a cross member of the lower floor in the embodiment of the present invention.
Fig. 7 is a sectional view of an aluminum profile of a cross member of a lower floor in an embodiment of the present invention.
Figure 8 is a schematic view of the lap joint of the cross beam of the lower floor to the left and right main load bearing side beams in an embodiment of the present invention.
FIG. 9 is a schematic view of the overlapping of the cross members of the lower floor with the front and rear side members in an embodiment of the present invention.
Fig. 10 is a schematic view of an assembly structure of a lower case of an anti-extrusion battery in an embodiment of the invention.
Detailed Description
The invention is further described below with reference to the figures and examples.
As shown in fig. 1, the anti-extrusion battery lower box body comprises a frame beam assembly 1, a lower bottom plate 2 containing a water cooling plate and a cross beam, a 590 large module with a hanging lug end plate, a pipeline 4 consisting of a tee joint/hose/pipe joint and a riveting standard part 5.
As shown in fig. 2, the frame beam assembly 1 comprises left and right main load-bearing side beams 1.1, front and rear side beams 1.3, corner side beams 1.3 at both sides connecting the front (rear) side beam 1.3 and the left and right main load-bearing side beams, and a load-bearing center beam 1.2.
As shown in fig. 3, the left and right main bearing side beams 1.1 are made of inner/middle/outer structural aluminum profiles, the inner cavity profile 1.1.2 is used for being connected with an end plate hanger of a 590 large module 3, the middle cavity profile 1.1.3 is a main body part of the left and right main bearing side beams 1.1, the outer cavity profile 1.1.4 is used for being fixedly assembled with a whole vehicle, and as shown in fig. 2, a waist-shaped hole 1.1.1 for assembling and positioning the whole vehicle is arranged on the outer cavity profile 1.1.4.
As shown in fig. 3, longitudinal reinforcing ribs are arranged on the inner cavity section bar 1.1.2 and the outer cavity section bar 1.1.4, and transverse and oblique reinforcing ribs are arranged on the middle cavity section bar 1.1.3, so that the bending strength and the structural rigidity of the whole beam are ensured; reinforcing ribs 1.1.5 and 1.1.6 are respectively arranged between the inner side cavity section bar 1.1.2 and the outer side cavity section bar 1.1.4 and the middle cavity section bar 1.1.3, so that the structural strength and rigidity of the left and right cavity section bars are improved.
In order to improve the mechanical impact strength of the box body and reduce the cost of the die, the sections of the aluminum profiles adopted by the front and rear side beams and the corner side beams 1.3 are shown in figure 4, and only comprise the middle cavity profile part of the bearing side beam 1.1.
The section of the aluminum profile adopted by the bearing middle beam 1.2 is shown in fig. 5, the section of the cavity of the bearing middle beam 1.2 comprises a rectangular section part containing reinforcing ribs above, a left protruding part 1.2.1 and a right protruding part 1.2.2 comprising longitudinal reinforcing ribs in the middle, a triangular section and a small rectangular section part below, and the left protruding part 1.2.1 and the right protruding part 1.2.2 are used for being connected with an end plate hanger of the module 3. A plurality of oblique and longitudinal reinforcing ribs are arranged on the whole bearing center sill 1.2, so that the structural strength and rigidity of the bearing center sill 1.2 are guaranteed.
The front view of the cross beam of the lower bottom plate 2 is shown in fig. 6, the cross section of the cross beam cavity of the lower bottom plate 2 is shown in fig. 7, the cross beam cavity section of the lower bottom plate 2 is provided with transverse and oblique reinforcing ribs, an upper U-shaped opening 2.2 is lapped with a bearing middle beam 1.2, the mechanical impact strength of the box body in the Y direction is improved, and meanwhile, the lower box body is divided into a plurality of areas for bearing the battery modules. Meanwhile, bosses 2.1 are arranged on the left and right of the cross beam of the lower bottom plate 2 and are used for subsequent lap welding treatment with the left and right main bearing side beams 1.1. It should be mentioned that, in the present embodiment, the number of the beams of the lower base plate is 3, however, the number of the beams in practical application is not limited to this, and may be adjusted or expanded according to the number of the arrangement modules.
The bottom of the outer edge beam of the frame beam assembly 1, i.e. the left and right main load-bearing edge beams 1.1 and the front and rear edge beams 1.3, are provided with approximately square grooves, as shown in fig. 3 and 4; the approximately square groove is used for lap welding with the boss 2.1 of the lower base plate 2, and the cross sections of the joint of the approximately square groove and the boss are consistent, so that annular full welding is facilitated, and the welding strength is guaranteed. FIG. 8 is a schematic view of the lap joint structure of the left and right main load-bearing side beams 1.1 and the lower floor 2; fig. 9 is a schematic view of the overlapping structure of the front and rear side members 1.3 and the lower floor 2.
As shown in fig. 2, the inner cavity profiles 1.1.2 and the reinforcing ribs 1.1.5 of the left and right main load-bearing side beams 1.1 may be discontinuously arranged, and the left and right main load-bearing side beams 1.1 are in a form of arranging the cutting grooves 1.1.8 at intervals in the drawing, which is beneficial to reducing the weight of the battery system. The left and right protrusions 1.2.1 and 1.2.2 in the middle of the load-bearing center sill 1.2 and the lower triangular section and small rectangular section parts are discontinuously arranged, and the load-bearing center sill 1.1 is in a form of spaced slots 1.2.3 in the figure, and more importantly, the load-bearing center sill can be overlapped with the U-shaped openings on the cross beams of the lower bottom plate while reducing the weight. The area of A, B, C, D four groups of left cavity section bars 1.1.2 of the load-bearing edge beam 1.1 shown in fig. 2 is used for connecting the end plate hangers of the X front 4 large modules, and the area of two inner side cavity section bars 1.1.2 of the E group is used for connecting the end plate hangers of the X front last small module. There are 5 sets of left tabs 1.2.1 (not shown) corresponding to A, B, C, D for the corresponding Y-direction load-bearing center sill 1.2 for the end plate hangers at the other end of the module.
The connection mode of one end of the bearing middle beam in the 1.2-X direction is that an inverted U-shaped aluminum profile 1.4 nested with a rectangular section above the bearing middle beam 1.2 is adopted to be in fine adjustable movable connection in the X direction, the inverted U-shaped aluminum profile 1.4 is positioned on a rear side beam 1.3 (namely the side beam 1.3 in the-X direction), and the other end of the bearing middle beam 1.2 in the X direction is not nested and connected, so that the fine adjustment of the bearing middle beam 1.2 in the X direction can be realized, and the mounting space of a left protruding part 1.2.1 and a right protruding part 1.2.2 of the bearing middle beam and the hole position precision of a module hangers mounting hole are ensured; in addition, the width of the cutting groove of the bearing middle beam 1.2 is larger than the thickness of the bottom plate cross beam, so that the overlap joint of the middle beam and the U-shaped opening 2.2 on the bottom plate cross beam can be ensured not to be influenced while the fine adjustment of the bearing middle beam in the 12X direction is realized.
The lower bottom plate 2 is welded with the left and right main bearing side beams 1.1, the front and rear side beams and corner side beams 1.3 and the bearing middle beam 1.2 into a whole to form an integrated power battery lower box body, as shown in fig. 10. The module 3 is connected with the box body through the riveting sleeve bolt 5, so that the assembly is attractive, and the reliability is high. A water cooling plate is arranged between the lower surface of each module and the lower bottom plate, and preferably, a heat conducting pad is arranged between the water cooling plate and the module; the pipeline formed by connecting the hose with the two/three-way connector (4.1-4.2)/the pipe joint (4.3) in series can be quickly connected with the water cooling plate, and the assembly process is simple. The corner edge beam 1.3 and the adjacent cross beam of the lower base plate and the area formed by the front edge beam 1.3 are provided with circuit elements such as a high-voltage distribution box and the like. After the whole battery system is grouped, the structure is firm; the system has high strength and rigidity, and the compression resistance and the shock resistance are obviously superior to those of the existing battery system.
The frame beam assembly 1, the bearing middle beam 1.2 and the cross beam of the lower bottom plate are made of aluminum profiles and are provided with corresponding reinforcing rib structures, meanwhile, the frame beam assembly 1 and the cross beam of the lower bottom plate are respectively provided with a groove and a boss for lap welding, and the bearing middle beam 1.2 and the U-shaped opening of the cross beam of the lower bottom plate are in lap welding, so that the battery system is lightened; the overall structural strength and rigidity of the box body are enhanced, and the pressure resistance and safety of the battery system are improved.
It will be understood that modifications and variations can be made by persons skilled in the art in light of the above teachings and all such modifications and variations are intended to be included within the scope of the invention as defined in the appended claims.
Claims (12)
1. The utility model provides a box under anti extrusion battery which characterized in that: the device comprises a frame beam assembly, a lower bottom plate with a water cooling plate and a cross beam, a battery module with a suspension loop end plate, a pipeline consisting of a tee joint/a hose/a pipe joint and a riveting standard part; the frame beam assembly comprises left and right main bearing side beams, front and rear side beams, corner side beams and a bearing middle beam; the bottom of each of the left main bearing side beam, the right main bearing side beam, the front side beam, the rear side beam and the corner side beam is provided with a square groove, two ends of the cross beam of the lower bottom plate are provided with bosses lapped with the square grooves, and the middle of the cross beam of the lower bottom plate is provided with a U-shaped opening lapped with the bearing middle beam.
2. The crush-resistant lower battery case of claim 1, wherein: the left main bearing side beam and the right main bearing side beam comprise inner side cavity profiles protruding towards the inner side of the frame beam assembly and are used for being connected with end plate hangers of the battery module; the left side and the right side of the bearing middle beam are respectively provided with a left protruding part and a right protruding part which are used for being connected with end plate hangers of the battery module; the bearing middle beam is correspondingly provided with a cutting groove in a U-shaped opening area of the cross beam of the lower bottom plate, and the left protruding part and the right protruding part of the bearing middle beam are discontinuously arranged, so that the bearing middle beam can be conveniently lapped with the U-shaped opening of the cross beam of the lower bottom plate.
3. The crush-resistant lower battery case of claim 2, wherein: the inner cavity profiles of the left and right main bearing side beams are provided with cutting grooves at intervals and are discontinuously arranged.
4. The crush-resistant lower battery case of claim 1, wherein: the left main bearing side beam and the right main bearing side beam adopt inner/middle/outer structural aluminum profiles; the inner side cavity section bar is used for being connected with an end plate hanging lug of the battery module; the middle cavity section is the main body part of the left main bearing side beam and the right main bearing side beam; the outer side cavity section can improve the Y-direction and Z-direction pressure resistance of the side wall of the box body in the horizontal plane, and a waist-shaped hole used for being assembled and positioned with the whole vehicle is arranged on the outer side cavity section.
5. The crush-resistant lower battery case of claim 4, wherein: longitudinal reinforcing ribs are uniformly distributed on the inner cavity profile and the outer cavity profile of the left main bearing side beam and the right main bearing side beam, and transverse reinforcing ribs and oblique reinforcing ribs are distributed on the middle cavity profile; reinforcing ribs are uniformly distributed among the inner cavity profile, the outer cavity profile and the middle cavity profile.
6. The crush-resistant lower battery case of claim 4, wherein: the section shapes of the aluminum profiles adopted by the front and rear boundary beams and the corner boundary beams are the same as the section shape of the middle cavity profile of the left and right main bearing boundary beams.
7. The crush-resistant lower battery case of claim 1, wherein: the cross section of the cavity of the bearing center sill comprises an upper rectangular section part containing reinforcing ribs, a middle left protruding part and a middle right protruding part comprising longitudinal reinforcing ribs, and a lower triangular section and a small rectangular section part; a plurality of oblique and longitudinal reinforcing ribs are arranged on the whole bearing middle beam.
8. The crush-resistant lower battery case of claim 7, wherein: the X-direction end of the bearing middle beam is connected in a mode that an inverted U-shaped aluminum profile nested with the rectangular cross section above the bearing middle beam is adopted to carry out X-direction fine-adjustable movable connection, the inverted U-shaped aluminum profile is positioned on the X-direction rear side beam, and meanwhile, the X-direction other end of the bearing middle beam is not nested and connected, so that fine adjustment of the bearing middle beam is realized in the X direction, and the accuracy of the hole positions of the mounting holes of the left protruding part and the right protruding part of the bearing middle beam and the mounting holes of the hangers of the battery module is guaranteed.
9. The crush-resistant lower battery case of claim 7, wherein: the cross section of the beam cavity of the lower bottom plate is provided with transverse and oblique reinforcing ribs.
10. The crush-resistant lower battery case of claim 8, wherein: the width of the cutting groove of the bearing middle beam is larger than the thickness of the cross beam of the lower bottom plate.
11. The crush-resistant lower battery case of claim 1, wherein: the areas formed by the corner edge beams and the front edge beam and the adjacent cross beam of the lower base plate are provided with circuit elements comprising high-voltage distribution boxes.
12. A method for manufacturing the anti-extrusion battery lower case according to any one of claims 1 to 11, characterized in that: and welding the lower bottom plate, the left main bearing side beam, the right main bearing side beam, the front side beam, the rear side beam, the corner side beam and the bearing middle beam into a whole to form an integrated power battery lower box body.
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| CN202010919347.1A CN112038525B (en) | 2020-09-04 | 2020-09-04 | Anti-extrusion battery lower box body and preparation method thereof |
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| CN202010919347.1A CN112038525B (en) | 2020-09-04 | 2020-09-04 | Anti-extrusion battery lower box body and preparation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114024076A (en) * | 2021-11-02 | 2022-02-08 | 安徽舟之航电池有限公司 | Power battery pack lower box body of novel integrated liquid cooling system for new energy automobile |
| WO2024000796A1 (en) * | 2022-06-30 | 2024-01-04 | 宁德时代新能源科技股份有限公司 | Box body, battery and electric device |
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| CN201627405U (en) * | 2010-03-29 | 2010-11-10 | 赵年高 | Tent |
| DE102014116181A1 (en) * | 2014-11-06 | 2016-05-12 | Lisa Dräxlmaier GmbH | Cooling device for an energy storage and energy storage device |
| CN206495330U (en) * | 2017-01-10 | 2017-09-15 | 浙江精工钢结构集团有限公司 | A kind of conversion girder construction for being used for adjusting hanging embedded part deviation |
| CN108630843A (en) * | 2017-03-23 | 2018-10-09 | 宁德时代新能源科技股份有限公司 | Battery pack protective frame and battery pack |
| CN208489245U (en) * | 2018-04-24 | 2019-02-12 | 北京新能源汽车股份有限公司 | Battery pack |
| CN109515216A (en) * | 2018-12-06 | 2019-03-26 | 中国第汽车股份有限公司 | Power battery of pure electric automobile assembly structure |
| CN209336472U (en) * | 2018-12-07 | 2019-09-03 | 蜂巢能源科技有限公司 | Lower case and battery pack |
| CN109742281A (en) * | 2018-12-27 | 2019-05-10 | 宁德时代新能源科技股份有限公司 | Battery box |
| CN210073956U (en) * | 2019-06-28 | 2020-02-14 | 蜂巢能源科技有限公司 | Lower casing boundary beam, lower casing and battery package |
| CN110571378A (en) * | 2019-08-29 | 2019-12-13 | 广汽新能源汽车有限公司 | Battery case and battery system |
| CN210607369U (en) * | 2019-09-29 | 2020-05-22 | 江苏大学 | Aluminum alloy battery pack lower shell |
| CN211017317U (en) * | 2019-11-04 | 2020-07-14 | 清华大学苏州汽车研究院（相城） | Battery box |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114024076A (en) * | 2021-11-02 | 2022-02-08 | 安徽舟之航电池有限公司 | Power battery pack lower box body of novel integrated liquid cooling system for new energy automobile |
| WO2024000796A1 (en) * | 2022-06-30 | 2024-01-04 | 宁德时代新能源科技股份有限公司 | Box body, battery and electric device |
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