CN115332677A - Battery tray box body integrated structure and manufacturing method thereof - Google Patents
Battery tray box body integrated structure and manufacturing method thereof Download PDFInfo
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- CN115332677A CN115332677A CN202211008759.5A CN202211008759A CN115332677A CN 115332677 A CN115332677 A CN 115332677A CN 202211008759 A CN202211008759 A CN 202211008759A CN 115332677 A CN115332677 A CN 115332677A
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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
- H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
- H01M10/6567—Liquids
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/244—Secondary casings; Racks; Suspension devices; Carrying devices; Holders characterised by their mounting method
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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
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/249—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders specially adapted for aircraft or vehicles, e.g. cars or trains
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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 application discloses a battery tray box body integrated structure and a manufacturing method thereof. The battery tray box body integrated structure comprises a box body frame assembly, an upper water cooling plate, a lower water cooling plate and a bottom protection plate; the upper water cooling plate is a flat plate, and the upper surface of the upper water cooling plate is connected to the lower surface of the box body frame assembly; the lower surface of the upper water cooling plate is connected to the upper surface of the lower water cooling plate, the upper surface of the lower water cooling plate is provided with a flow channel groove, and the region of the lower water cooling plate without the flow channel groove is attached to the upper water cooling plate to form a water cooling plate flow channel; and a bottom protection plate is arranged below the lower water cooling plate, and the edge of the bottom protection plate is connected with the frame of the box body frame assembly. This application will constitute the direct structure as battery tray box of structure of water-cooled board, have that structure bulk strength is high, the production link is short, low in manufacturing cost's advantage, has improved the bulk strength of car power battery tray box, has promoted the production efficiency of box, has reduced manufacturing cost.
Description
Technical Field
The application relates to the technical field of battery modules, in particular to a battery tray box body integrated structure with a water-cooling plate directly integrated in a box body and a manufacturing method of the battery tray box body integrated structure.
Background
Because power battery can produce the heat at the in-process of charging and discharging, for the battery work under suitable temperature, power battery tray need use cooling system to cool down the battery, and the cooling system of battery tray usually can use the water-cooling board, and the current existing manufacturing technology route of water-cooling board has following several:
firstly, brazing and forming. The water cooling plate using the process has an upper layer structure and a lower layer structure, wherein a cooling liquid runner groove is processed on one layer or two layers of structures, and the upper layer structure and the lower layer structure are combined together to form the shape of the cooling liquid runner. When the brazing filler metal is processed, brazing filler metal is coated between the two layers of structures of the water cooling plate, then the two layers of structures are compressed, the water cooling plate is sent into a brazing furnace for high-temperature brazing, and after the brazing filler metal is melted and re-solidified, the upper structure and the lower structure of the water cooling plate are connected together to form a sealed cooling liquid flow channel. The water cooling plate manufactured by the method can use thin structural materials, adopts a complex flow passage, and has the advantages of high heat conduction speed and high heat transfer efficiency. However, the water-cooling plate has a plurality of defects, the welding material cost is high, the production rhythm is slow, special high-temperature brazing production equipment is needed, and the cost is high; the brazing solder contains heavy metals, and can cause additional heavy metal pollution; meanwhile, the water-cooling plate material is limited by a brazing process, and is in a complete annealing state after brazing is completed, so that the strength of the material is low.
And secondly, extrusion forming. The method uses an extrusion-molded cavity as a cooling liquid flow passage, and uses a structure with a certain cavity to plug two ends of the sectional material, so that the cooling liquid flows directionally in the cavity. The water cooling plate with the structure has high rigidity and relatively high strength, but is limited by an extrusion forming process, a complex flow channel is difficult to form by the structure, and the heat transfer efficiency of the water cooling plate is reduced due to the thick wall.
And thirdly, a blowing process. The forming method can adopt thinner plate wall thickness, and has good heat transfer performance; the sheet material has a certain strength by plastic deformation. However, the process has high molding difficulty and high processing cost.
Besides the above disadvantages, several existing processes have a common problem that the water-cooling plate must be produced as an independent component, which increases the length of the production chain of the whole battery tray box body, delays the production rhythm of the battery tray box body to a certain extent, and further affects the overall production cost and quality management difficulty of the box body.
Disclosure of Invention
The embodiment of the application provides a battery tray box integrated configuration and manufacturing method thereof, can improve the bulk strength of car power battery tray box, promotes the production efficiency of box, and reduction in production cost solves the production beat that delays battery tray box that produces the water-cooling board as solitary subassembly part and causes, and then influences the technical problem of the whole manufacturing cost of box and the quality control degree of difficulty.
The embodiment of the application provides a battery tray box body integrated structure, which comprises a box body frame assembly, an upper water cooling plate, a lower water cooling plate and a bottom guard plate; the upper water cooling plate is a flat plate, and the upper surface of the upper water cooling plate is connected to the lower surface of the box body frame assembly; the lower surface of the upper water cooling plate is connected to the upper surface of the lower water cooling plate, the upper surface of the lower water cooling plate is provided with a flow channel groove, and the region of the lower water cooling plate without the flow channel groove is attached to the upper water cooling plate to form a water cooling plate flow channel; and a bottom protection plate is arranged below the lower water cooling plate, and the edge of the bottom protection plate is connected with the frame of the box body frame assembly.
In this application embodiment, go up water-cooling board with the laminating department of lower water-cooling board is scribbled sealed glue, go up water-cooling board with the connected mode of lower water-cooling board uses rivet riveting, the rivet is located go up water-cooling board with the laminating department of lower water-cooling board.
In an embodiment of the application, countersunk head rivet is adopted in the riveting, countersunk head rivet head position in go up water-cooling plate department, riveted rivet head portion or rivet pier head have covered around sealed glue.
In this application embodiment, go up water cold drawing with the laminating department of lower water cold drawing is scribbled and is sealed glue by spot welding, go up water cold drawing with resistance spot welding is used to the connected mode of lower water cold drawing, and resistance spot welding's solder joint is located go up water cold drawing with the laminating department of lower water cold drawing.
In an embodiment of the present application, the connection mode of the upper water cooling plate and the lower water cooling plate uses friction stir welding or laser penetration welding, and a welding seam of the friction stir welding or a welding seam of the laser penetration welding is located at a joint of the upper water cooling plate and the lower water cooling plate.
In one embodiment of the present application, the box frame assembly includes a rim, a center cross member, and/or a center longitudinal member; a middle hanging sleeve is arranged on the middle cross beam and/or the middle longitudinal beam; the upper water cooling plate is provided with a first through hole matched with the middle hanging sleeve, and the lower water cooling plate is provided with a second through hole matched with the middle hanging sleeve.
In one embodiment of the application, upper rivet nut mounting holes are formed in the lower surfaces of the middle cross beam and the middle longitudinal beam, lower rivet nut mounting holes corresponding to the upper rivet nut mounting holes are formed in the upper water cooling plate and the lower water cooling plate, and double layers of rivet nuts are used for connecting and pressing the middle of the lower water cooling plate, the upper water cooling plate, the middle cross beam and the middle longitudinal beam together; the lower surface of the frame of the box body frame assembly is provided with a rivet nut mounting hole; a blind hole type rivet nut is arranged in a rivet nut mounting hole which is arranged on the frame and corresponds to the bottom protection plate; the bottom guard plate is connected with the blind hole type rivet nut through a bolt.
In an embodiment of the present application, threaded holes are formed in the lower surfaces of the middle cross beam and the middle longitudinal beam, and a self-tapping screw (FDS) is used to connect and fasten the upper water cooling plate and the lower water cooling plate with the frame assembly; riveting the upper water cooling plate and the lower water cooling plate together by using rivets; the lower surface of the frame of the box body frame assembly is provided with a threaded blind hole; the bottom guard plate is connected with the threaded blind hole through bolts.
In an embodiment of the present application, the edge of the bottom protection plate and the frame are welded together by friction stir welding; and/or a polyvinyl chloride (PVC) protective layer is arranged on the lower surface of the bottom protection plate.
An embodiment of the present application further provides a method for manufacturing the aforementioned integrated structure of the battery tray box, including the following steps:
manufacturing a box body frame assembly, wherein the battery tray box body frame assembly is formed by welding aluminum alloy sections;
providing an upper water cooling plate which is a flat plate; connecting the upper surface of the upper water-cooling plate to the lower surface of the box frame assembly;
manufacturing a lower water cooling plate, wherein the upper surface of the lower water cooling plate is provided with a runner groove; connecting the lower surface of the upper water cooling plate to the upper surface of the lower water cooling plate, wherein the region of the lower water cooling plate without the runner groove is attached to the upper water cooling plate to form a water cooling plate runner; and
and providing a bottom protection plate, arranging the bottom protection plate below the lower water cooling plate, and connecting the edge of the bottom protection plate with the frame of the box body frame assembly.
The battery tray box integrated structure and the manufacturing method thereof provided by the embodiment of the application have the advantages of high overall strength of the structure, short production link, low manufacturing cost and the like, improve the overall strength of the automobile power battery tray box, improve the production efficiency of the box and reduce the production cost.
Drawings
The technical solution and other advantages of the present application will become apparent from the detailed description of the embodiments of the present application with reference to the accompanying drawings.
Fig. 1 is an exploded view of an integrated structure of a battery tray box provided in an embodiment of the present application;
FIG. 2 is a schematic structural diagram of a box frame assembly according to an embodiment of the present disclosure;
fig. 3 is a schematic structural diagram of an upper water-cooling plate and a lower water-cooling plate provided in the embodiment of the present application;
fig. 4 is a schematic structural diagram of an upper water-cooling plate and a lower water-cooling plate connected by friction stir welding according to an embodiment of the present application;
fig. 5 is a schematic structural view illustrating an upper water cooling plate and a lower water cooling plate connected by rivets according to an embodiment of the present disclosure;
fig. 6 is a schematic structural view of the upper water-cooling plate and the lower water-cooling plate connected by resistance spot welding according to the embodiment of the present application;
fig. 7 is a schematic structural view of the upper water-cooling plate and the lower water-cooling plate connected by laser welding according to the embodiment of the present application;
fig. 8 is a schematic structural view of a connection manner between the upper and lower water cooling plates and the frame assembly, which is provided in the embodiment of the present application, and adopts an outer edge stir welding and a middle double-layer rivet pulling manner;
fig. 9 is a flowchart of a method for manufacturing an integrated structure of a battery tray box according to an embodiment of the present application.
The components in the figures are identified as follows:
1. a frame assembly; 2. a water cooling plate is arranged; 3. launching a water cooling plate; 4. a bottom guard plate; 5. a flow channel groove; 6. a water-cooled plate runner; 7. friction stir welding the weld; 8. sealing glue; 9. riveting; 10. spot welding of the sealant; 11. laser penetration welding; 12. resistance welding spots; 13. countersunk rivets; 14. riveting the head part; 15. riveting a pier head; 16. a frame; 17. a middle cross beam; 18. a middle longitudinal beam; 19. a sleeve is hung in the middle; 21. upwards riveting a nut through hole; 22. a first via hole; 23. a cooling liquid inlet and outlet; 31. a through hole of the lower pulling rivet nut; 32. a second via.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; may be mechanically, electrically or may be in communication with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact of the first and second features, or may comprise contact of the first and second features not directly but through another feature in between. Also, the first feature "on," "above" and "over" the second feature may include the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
The following disclosure provides many different embodiments or examples for implementing different features of the application. In order to simplify the disclosure of the present application, specific example components and arrangements are described below. Of course, they are merely examples and are not intended to limit the present application. Moreover, the present application may repeat reference numerals and/or letters in the various examples, such repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, examples of various specific processes and materials are provided herein, but one of ordinary skill in the art may recognize the application of other processes and/or the use of other materials.
Specifically, referring to fig. 1 to 7, an embodiment of the present application provides a battery tray box integrated structure, including a box frame assembly 1, an upper water-cooling plate 2, a lower water-cooling plate 3, and a bottom protection plate 4; the upper water cooling plate 2 is a flat plate, and the upper surface of the upper water cooling plate is connected to the lower surface of the box body frame assembly 1; the lower surface of the upper water cooling plate 2 is connected to the upper surface of the lower water cooling plate 3, the upper surface of the lower water cooling plate 3 is provided with a flow channel groove 5, and the region of the lower water cooling plate 3 without the flow channel groove 5 is attached to the upper water cooling plate 2 to form a water cooling plate flow channel 6; a bottom protection plate 4 is arranged below the lower water cooling plate 3, and the edge of the bottom protection plate 4 is connected with a frame 16 of the frame assembly 1.
As shown in fig. 4, in an embodiment of the present application, a sealant 8 is coated at a joint of the upper water-cooling plate 2 and the lower water-cooling plate 3, the upper water-cooling plate 2 and the lower water-cooling plate 3 are riveted by a rivet 9, and the rivet 9 is located at the joint of the upper water-cooling plate 2 and the lower water-cooling plate 3.
As shown in fig. 3, the upper water-cooling plate 2 is provided with an upper rivet nut via hole 21, the lower water-cooling plate 3 is provided with a lower rivet nut via hole 31 corresponding to the upper rivet nut via hole 21, and the rivet 9 is arranged in the upper rivet nut via hole 21 and the lower rivet nut via hole 31 correspondingly in a penetrating manner.
As shown in fig. 5, in an embodiment of the present application, a countersunk head rivet 13 is adopted in the riveting 9, the countersunk head rivet 13 is provided with a rivet head 14 and a rivet pier 15, the rivet head 14 of the countersunk head rivet 13 is located at the upper water-cooling plate 2, and the sealant 8 covers around the rivet head 14 or the rivet pier 15 of the riveting 9.
As shown in fig. 6, in an embodiment of the present application, a spot welding sealant 10 is coated at a joint of the upper water-cooling plate 2 and the lower water-cooling plate 3, resistance spot welding is used for a connection manner of the upper water-cooling plate 2 and the lower water-cooling plate 3, and a welding spot 12 of the resistance spot welding is located at the joint of the upper water-cooling plate 2 and the lower water-cooling plate 3.
As shown in fig. 4, friction stir welding is used for connecting the upper water-cooling plate 2 and the lower water-cooling plate 3, and a welding seam 7 of the friction stir welding is located at a joint of the upper water-cooling plate 2 and the lower water-cooling plate 3. Or as shown in fig. 7, the upper water cooling plate 2 and the lower water cooling plate 3 are connected by laser penetration welding, and a welding seam 11 of the laser penetration welding is located at the joint of the upper water cooling plate 2 and the lower water cooling plate 3.
As shown in fig. 2 and 3, in the embodiment of the present application, the box frame assembly 1 includes a side frame 16, a middle cross member 17 and/or a middle longitudinal member 18; a middle hanging sleeve 19 is arranged on the middle cross beam 17 and/or the middle longitudinal beam 18; the upper water cooling plate 2 is provided with a first through hole 22 matched with the middle hanging sleeve 19, and the lower water cooling plate 3 is provided with a second through hole 32 matched with the middle hanging sleeve 19. The upper water cooling plate 2 is further provided with a cooling liquid inlet and outlet 23, and the runner groove 5 on the upper surface of the lower water cooling plate 3 is arranged corresponding to the cooling liquid inlet and outlet 23.
As shown in fig. 2, in an embodiment of the present application, upper rivet nut mounting holes are formed in lower surfaces of the middle cross beam 17 and the middle longitudinal beam 18, and lower rivet nut mounting holes corresponding to the upper rivet nut mounting holes are formed in the upper water-cooling plate 2 and the lower water-cooling plate 3, as shown in fig. 8, a double-layer rivet nut may be used to connect and press the middle of the lower water-cooling plate 3, the upper water-cooling plate 2, the middle cross beam 17, and the middle longitudinal beam 18 together; the lower surface of the frame assembly 1 is provided with a rivet nut mounting hole; a blind hole type rivet nut is arranged in a rivet nut mounting hole which is arranged on the frame 16 and corresponds to the bottom protection plate 4; the bottom guard plate 4 is connected with blind hole type rivet nuts by bolts.
In an embodiment of the present application, threaded holes are formed in the lower surfaces of the middle cross beam 17 and the middle longitudinal beam 18, and the upper water-cooling plate 2, the lower water-cooling plate 3 and the frame assembly 1 are connected and fastened together by using self-tapping screws FDS; riveting the upper water cooling plate 2 and the lower water cooling plate 3 together by using rivets; the lower surface of the frame assembly 1 is provided with a threaded blind hole; the bottom guard plate 4 is connected with the threaded blind hole by using a bolt.
In one embodiment of the present application, the edge of the bottom protection plate 4 and the frame 16 are welded together by friction stir welding; and/or a PVC (polyvinyl chloride) protective layer is arranged on the lower surface of the bottom protection plate 4.
Referring to fig. 9, an embodiment of the present application further provides a method for manufacturing the battery tray and case integrated structure, including the following steps:
s1, manufacturing a box body frame assembly 1, wherein the battery tray box body frame assembly 1 is formed by welding aluminum alloy sections;
s2, providing an upper water cooling plate 2, wherein the upper water cooling plate 2 is a flat plate; connecting the upper surface of the upper water cooling plate 2 to the lower surface of the box body frame assembly 1;
s3, manufacturing a lower water cooling plate 3, wherein a runner groove 5 is formed in the upper surface of the lower water cooling plate 3; connecting the lower surface of the upper water cooling plate 2 to the upper surface of the lower water cooling plate 3, wherein the region of the lower water cooling plate 3 without the runner groove 5 is attached to the upper water cooling plate 2 to form a water cooling plate runner 6; and
and S4, providing a bottom protection plate 4, arranging the bottom protection plate 4 below the lower water cooling plate 3, and connecting the edge of the bottom protection plate 4 with a frame 16 of the frame assembly 1.
For specific limitations of the manufacturing method of the battery tray box integrated structure, reference may be made to the above limitations of the battery tray box integrated structure, and details are not repeated here.
The following examples are specifically given to explain the details.
Example one
As shown in fig. 1 to fig. 4, in a first embodiment, a battery tray and box body integrated structure in which a water cooling plate is directly integrated in a box body includes a box body frame assembly 1, an upper water cooling plate 2, a lower water cooling plate 3, and a bottom protection plate 4.
The battery tray box body frame assembly 1 is formed by welding aluminum alloy sections, and is divided into a side frame 16, a middle cross beam 17 and a middle longitudinal beam 18 for convenience of description.
A middle hanging sleeve 19 is welded on a middle longitudinal beam 18 of the box body frame assembly 1, and threaded holes are machined in the positions, close to the upper edge and the lower edge, of an inner hole of the middle hanging sleeve 19; rivet nut mounting holes are formed in the lower surfaces of the middle cross beam 17 and the middle longitudinal beam 18 of the box body frame assembly 1, and rivet nut mounting holes are formed in the upper surface and the lower surface of the side frame 16 of the box body frame assembly 1.
The upper water cooling plate 2 is a flat plate, a 6061-T6 aluminum alloy plate is adopted, the thickness is 1mm, and a film is used for protecting the surface of the plate when the plate is supplied.
And sealant 8 is coated on the periphery of a mounting hole of the rivet nut below the box body frame assembly 1 and the periphery of the middle hanging sleeve 19. The film sticking of the upper water-cooling plate 2 is removed, a rivet nut through hole is punched, then the upper water-cooling plate 2 and the box body frame assembly 1 are positioned and clamped together by using a tool clamp, and the edge of the upper water-cooling plate 2 and the frame 16 of the box body frame assembly 1 are welded together by using friction stir penetration welding.
The lower water cooling plate 3 is made of 6061T4 aluminum alloy plate, and the thickness of the plate is 1.5mm. And (3) processing a runner groove 5 by using a plate stamping forming method, stamping a rivet nut mounting hole, carrying out aging treatment on the workpiece to be in a T6 state after stamping forming, carrying out shape correction after the workpiece is cooled to room temperature, and carrying out polishing treatment on the part, attached to the upper plate, of the upper surface of the lower plate after the shape correction is finished.
The relative position of the lower water cooling plate 3 and the box body frame assembly 1 is fixed by using a tool clamp, the lower water cooling plate 3 and the upper water cooling plate 2 are pressed together, the upper water cooling plate 2 and the lower water cooling plate 3 are welded together by using friction stir penetration welding, and the position of a welding line 7 is shown in figure 4, so that the sealing performance of a flow channel is ensured. As shown in fig. 8, the middle part of the lower water-cooling plate 3 and the upper water-cooling plate 2 can be connected and pressed together by using double-layer rivet nuts, and the middle cross beam 17 and the middle longitudinal beam 18 of the box frame assembly 1.
After the water cooling plates 2 and 3 are connected with the box body frame assembly 1, blind rivet nuts are mounted in the rest positions of the blind rivet nut holes of the box body frame assembly 1, and the blind rivet nuts are blind hole type rivet nuts.
The bottom guard plate 4 is formed by punching a high-strength low-alloy steel plate, and the thickness of the steel plate is 1mm. The lower surface of the bottom protection plate 4 is coated with a polyvinyl chloride (PVC) protective layer and is connected with the blind hole type rivet nut by using a bolt.
Example two
As shown in fig. 1-3 and 5, the battery tray and box body integrated structure in which the water cooling plate is directly integrated into the box body provided in the second embodiment includes a box body frame assembly 1, an upper water cooling plate 2, a lower water cooling plate 3 and a bottom protection plate 4.
The battery tray box body frame assembly 1 is formed by welding aluminum alloy sections, and is divided into a side frame 16 and a middle longitudinal beam 18 for convenience of description.
A middle hanging sleeve 19 is welded on a middle longitudinal beam 18 of the box body frame assembly 1, and threaded holes are machined in the positions, close to the upper edge, of inner holes of the middle hanging sleeve 19; threaded blind holes are processed on the upper surface and the lower surface of a frame 16 of the box body frame assembly 1.
The upper water cooling plate 2 is a flat plate, a 7075-T6 aluminum alloy plate is adopted, the thickness is 1.5mm, and a film is used for protecting the surface of the plate when the plate is supplied. The upper water-cooling plate 2 is stripped of the film and punched out of the through hole of the hanging sleeve.
The lower water cooling plate 3 is processed into the runner groove 5 by a plate punch forming method, and is made of 2014-T4 aluminum alloy plates with the thickness of 1mm. And (3) performing aging treatment on the workpiece after punch forming to a T6 state, performing shape correction after the workpiece is cooled to room temperature, and performing polishing treatment on the part where the upper surface of the lower plate is attached to the upper plate after the shape correction is completed.
Coating a sealant 8 at the joint of the lower part of the box body frame assembly 1 and the water cooling plate, coating the sealant 8 at the joint of the upper surface of the lower water cooling plate 3 and the upper plate, fixing the relative positions of the upper water cooling plate 3 and the lower water cooling plate 1 by using a tool clamp, and pressing the lower water cooling plate 3, the upper water cooling plate 2 and the box body frame assembly 1 together.
The upper and lower water cooling plates 3 and the box frame assembly 1 are connected and fastened together by using self-piercing and self-tapping screws (FDS). The upper water cooling plate 2 and the lower water cooling plate 3 are riveted together by using rivets 9, and the positions of the rivets 9 are shown in fig. 5.
The bottom guard plate 4 is formed by hot stamping of a high-strength steel plate, and the thickness of the steel plate is 0.8mm. The lower surface of the bottom protection plate 4 is coated with a polyvinyl chloride (PVC) protective layer and is connected with the threaded blind hole on the lower surface of the frame 16 by using a bolt.
EXAMPLE III
As shown in fig. 1-3 and 6, in the third embodiment, the battery tray and box body integrated structure in which the water cooling plate is directly integrated into the box body includes a box body frame assembly 1, an upper water cooling plate 2, a lower water cooling plate 3, and a bottom protection plate 4.
The battery tray box body frame assembly 1 is formed by welding aluminum alloy sections, and is divided into a frame 16 and a middle cross beam 17 for convenience of description.
The upper surface of the frame 16 of the box body frame assembly 1 is provided with a threaded blind hole.
The upper plate of the water cooling plate is a flat plate, a 6082-T6 aluminum alloy plate is adopted, the thickness is 1mm, and a film is used for protecting the surface of the plate when the plate is supplied.
The lower water cooling plate 3 is processed into the flow channel groove 5 by a plate punch forming method, a 3003-O aluminum alloy plate is adopted, and the thickness of the plate is 1.5mm. And (5) polishing the place where the upper surface of the lower plate is attached to the upper plate after the workpiece is subjected to punch forming.
Coating a sealant 8 at the joint of the lower part of the box body frame assembly 1 and the upper water cooling plate 2, coating a spot welding sealant 10 at the joint of the upper surface of the lower water cooling plate 3 and the upper plate, removing the film from the upper plate of the water cooling plate, fixing the relative positions of the upper water cooling plate 3 and the lower water cooling plate 1 by using a tool clamp, and pressing the lower water cooling plate 3, the upper water cooling plate 2 and the box body frame assembly 1 together.
The upper water cooling plate 3 and the lower water cooling plate 3 are connected and fastened together with the box body frame assembly 1 through self-tapping screws (FDS), the upper water cooling plate 2 and the lower water cooling plate 3 are welded together through resistance spot welding, and the positions of welding spots 12 are shown in FIG. 6.
The bottom guard plate 4 is formed by punching an aluminum alloy plate, the plate material is 6061-T4, the thickness of the plate is 2.5mm, the plate is subjected to aging treatment to be in a T6 state after being formed by punching, and the shape is corrected after the workpiece is cooled to room temperature.
Fixing the relative position of the bottom protection plate 4 and the box body frame assembly 1 by using a tool clamp and pressing the two together, and welding the edge of the bottom protection plate 4 and the frame 16 of the box body frame assembly 1 together by using friction stir welding.
Example four
As shown in fig. 1 to 3, 7 and 8, in the fourth embodiment, the battery tray and box integrated structure includes a box frame assembly 1, an upper water-cooling plate 2, a lower water-cooling plate 3 and a bottom protection plate 4.
The battery tray box body frame assembly 1 is formed by welding aluminum alloy sections, and is divided into a side frame 16, a middle cross beam 17 and a middle longitudinal beam 18 for convenience of description.
A middle hanging sleeve 19 is welded on a middle longitudinal beam 18 of the box body frame assembly 1, and threads are machined at the positions, close to the upper edge and the lower edge, of an inner hole of the middle hanging sleeve 19; rivet nut mounting holes are formed in the lower surfaces of the middle cross beam 17 and the middle longitudinal beam 18 of the box body frame assembly 1, and rivet nut mounting holes are formed in the upper surface and the lower surface of the side frame 16 of the box body frame assembly 1.
The upper water cooling plate 2 is a flat plate, a 6061-T6 aluminum alloy plate is adopted, the thickness is 1mm, and a film is used for protecting the surface of the plate when the plate is supplied.
And coating the sealant 8 on the periphery of a mounting hole of a rivet nut below the box body frame assembly 1 and the periphery of the middle hanging sleeve 19. Removing the film from the upper water-cooling plate 2, punching a rivet nut through hole, positioning and clamping the upper water-cooling plate 2 and the box body frame assembly 1 together by using a tool clamp, and welding the edge of the upper water-cooling plate 2 and the frame 16 of the box body frame assembly 1 together by using friction stir penetration welding.
The lower water cooling plate 3 is made of 6061T4 aluminum alloy plate, and the thickness of the plate is 1.5mm. And (3) processing a runner groove 5 by using a plate stamping forming method, stamping a rivet nut mounting hole, carrying out aging treatment on the workpiece to be in a T6 state after stamping forming, carrying out shape correction after the workpiece is cooled to room temperature, and carrying out polishing treatment on the part, attached to the upper plate, of the upper surface of the lower plate after the shape correction is finished.
The relative position of the lower water cooling plate 3 and the box body frame assembly 1 is fixed by using a tool clamp, the lower water cooling plate 3 and the upper water cooling plate 2 are pressed together, the upper water cooling plate 2 and the lower water cooling plate 3 are welded together by using laser penetration welding, and the position of a welding line 11 is shown in figure 7, so that the sealing performance of a flow channel is ensured. As shown in fig. 8, the middle part of the lower water-cooling plate 3 can be connected and pressed with the upper water-cooling plate 2 and the middle cross beam 17 and the middle longitudinal beam 18 of the box frame assembly 1 by using double-layer rivet nuts.
And after the connection between the water cooling plate and the box body frame assembly 1 is completed, blind rivet nuts are installed at the positions of the rest blind rivet nut holes of the box body frame assembly 1, and the blind rivet nuts are blind hole type rivet nuts.
The bottom guard plate 4 is formed by punching a high-strength low-alloy steel plate, and the thickness of the steel plate is 1mm. The lower surface of the bottom protection plate 4 is coated with a polyvinyl chloride (PVC) protective layer and is connected with the blind hole type rivet nut by using a bolt.
Based on the same inventive concept, the application also provides a battery module, which comprises the battery tray box body integrated structure.
The battery tray box integrated structure and the manufacturing method thereof provided by the embodiment of the application have the advantages of high overall strength of the structure, short production link, low manufacturing cost and the like, improve the overall strength of the automobile power battery tray box, improve the production efficiency of the box and reduce the production cost.
In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to the related descriptions of other embodiments.
The above embodiments of the present application are described in detail, and specific examples are applied herein to explain the principles and implementations of the present application, and the description of the above embodiments is only used to help understand the technical solutions and their core ideas of the present application; those of ordinary skill in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications or substitutions do not depart from the spirit and scope of the present disclosure as defined by the appended claims.
Claims (10)
1. A battery tray box body integrated structure is characterized by comprising a box body frame assembly (1), an upper water cooling plate (2), a lower water cooling plate (3) and a bottom protection plate (4);
the upper water cooling plate (2) is a flat plate, and the upper surface of the upper water cooling plate is connected to the lower surface of the box body frame assembly (1);
the lower surface of the upper water cooling plate (2) is connected to the upper surface of the lower water cooling plate (3), a runner groove (5) is formed in the upper surface of the lower water cooling plate (3), and the area, where the runner groove (5) is not formed, of the lower water cooling plate (3) is attached to the upper water cooling plate (2) to form a water cooling plate runner (6);
a bottom protection plate (4) is arranged below the lower water cooling plate (3), and the edge of the bottom protection plate (4) is connected with a frame (16) of the box body frame assembly (1).
2. The battery tray box integrated structure according to claim 1, wherein a joint of the upper water cooling plate (2) and the lower water cooling plate (3) is coated with a sealant (8), the upper water cooling plate (2) and the lower water cooling plate (3) are connected in a riveting manner by using a rivet (9), and the rivet (9) is located at the joint of the upper water cooling plate (2) and the lower water cooling plate (3).
3. The battery tray box integrated structure of claim 2, characterized in that the riveting (9) adopts a countersunk rivet, the rivet head (14) of the countersunk rivet (13) is located at the upper water-cooling plate (2), and the sealant (8) is covered around the rivet head (14) or the rivet pier head (15) of the riveting (9).
4. The battery tray box body integrated structure according to claim 1, wherein a spot welding sealant (10) is coated at a joint of the upper water cooling plate (2) and the lower water cooling plate (3), resistance spot welding is used in a connection mode of the upper water cooling plate (2) and the lower water cooling plate (3), and a welding spot (12) of the resistance spot welding is located at the joint of the upper water cooling plate (2) and the lower water cooling plate (3).
5. The battery tray box body integrated structure according to claim 1, wherein the upper water cooling plate (2) and the lower water cooling plate (3) are connected by friction stir welding or laser penetration welding, and a welding seam (7) of friction stir welding or a welding seam (11) of laser penetration welding is positioned at the joint of the upper water cooling plate (2) and the lower water cooling plate (3).
6. A battery tray box integrated structure according to claim 1, characterized in that the box frame assembly (1) comprises a rim (16), a middle cross beam (17) and/or a middle longitudinal beam (18); a middle hanging sleeve (19) is arranged on the middle cross beam (17) and/or the middle longitudinal beam (18); go up water-cooling board (2) be equipped with the centre hang first via hole (22) of sleeve (19) looks adaptation, lower water-cooling board (3) be equipped with the centre hang second via hole (32) of sleeve (19) looks adaptation.
7. The battery tray box integrated structure according to claim 6, wherein upper rivet nut mounting holes are formed in the lower surfaces of the middle cross beam (17) and the middle longitudinal beam (18), lower rivet nut mounting holes corresponding to the upper rivet nut mounting holes are formed in the upper water cooling plate (2) and the lower water cooling plate (3), and double-layer rivet nuts are used for connecting and pressing the middle of the lower water cooling plate (3) with the upper water cooling plate (2) and the middle cross beam (17) and the middle longitudinal beam (18); the lower surface of the frame of the box body frame assembly (1) is provided with a rivet nut mounting hole; a blind hole type rivet nut is arranged in a rivet nut mounting hole which is arranged on the frame (16) and corresponds to the bottom protection plate (4); the bottom protection plate (4) is connected with the blind hole type rivet nut through bolts.
8. The battery tray box integrated structure is characterized in that the lower surfaces of the middle cross beam (17) and the middle longitudinal beam (18) are provided with threaded holes, and the upper water cooling plate (2) and the lower water cooling plate (3) are connected and fastened with the box frame assembly (1) by using self-tapping screws with self-punched holes; riveting the upper water cooling plate (2) and the lower water cooling plate (3) together by using rivets; the lower surface of the frame of the box body frame assembly (1) is provided with a threaded blind hole; the bottom guard plate (4) is connected with the threaded blind hole through bolts.
9. The battery tray box integrated structure of claim 1, characterized in that the edge of the bottom protective plate (4) and the frame (16) are welded together by friction stir welding; and/or a polyvinyl chloride protective layer is arranged on the lower surface of the bottom protection plate (4).
10. A method for making an integrated structure of a battery tray box as claimed in any one of claims 1 to 9, comprising the steps of:
manufacturing a box body frame assembly (1), wherein the battery tray box body frame assembly (1) is formed by welding aluminum alloy sections;
providing an upper water cooling plate (2), wherein the upper water cooling plate (2) is a flat plate; connecting the upper surface of the upper water cooling plate (2) to the lower surface of the box body frame assembly (1);
manufacturing a lower water cooling plate (3), wherein a runner groove (5) is formed in the upper surface of the lower water cooling plate (3); connecting the lower surface of the upper water cooling plate (2) to the upper surface of the lower water cooling plate (3), wherein the area of the lower water cooling plate (3) without the runner groove (5) is attached to the upper water cooling plate (2) to form a water cooling plate runner (6); and
providing a bottom protection plate (4), arranging the bottom protection plate (4) below the lower water cooling plate (3), and connecting the edge of the bottom protection plate (4) with a frame (16) of the box body frame assembly (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202211008759.5A CN115332677A (en) | 2022-08-22 | 2022-08-22 | Battery tray box body integrated structure and manufacturing method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211008759.5A CN115332677A (en) | 2022-08-22 | 2022-08-22 | Battery tray box body integrated structure and manufacturing method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116190846A (en) * | 2023-02-21 | 2023-05-30 | 南京艾科美热能科技有限公司 | Uniform temperature energy storage pack and energy storage equipment |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116190846A (en) * | 2023-02-21 | 2023-05-30 | 南京艾科美热能科技有限公司 | Uniform temperature energy storage pack and energy storage equipment |
| CN116190846B (en) * | 2023-02-21 | 2024-02-20 | 南京艾科美热能科技有限公司 | Uniform temperature energy storage pack and energy storage equipment |
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