CN219379516U - Blade type power battery tray beam welding tool - Google Patents
Blade type power battery tray beam welding tool Download PDFInfo
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- CN219379516U CN219379516U CN202223531280.8U CN202223531280U CN219379516U CN 219379516 U CN219379516 U CN 219379516U CN 202223531280 U CN202223531280 U CN 202223531280U CN 219379516 U CN219379516 U CN 219379516U
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- frame
- battery tray
- pressing
- cross beam
- tray
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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
A welding tool for a cross beam of a blade type power battery tray is characterized in that a portal frame is arranged at a central line above a frame, two sides above the portal frame are provided with a pressing hydraulic cylinder, a piston rod of the pressing hydraulic cylinder is downwards connected with a pressing beam, and a cross beam clamping mechanism is arranged on the pressing beam; a plurality of rollers are arranged on two sides of a gantry frame on the frame, and can be lifted up and down through roller cylinders fixed on a beam of the frame; the gantry frame is provided with a plurality of cushion blocks. The utility model can automatically realize a series of actions of pulling and supporting the battery tray, lowering, embedding and reverse deformation of the cross beam. The principle is that before the welding of the cross beam, the battery tray is stretched, the cross beam is positioned and put in, the concave welding anti-deformation stress is given to the battery tray, after the welding of the cross beam is carried out, the stress after deformation just can offset the anti-deformation stress, and therefore the final battery tray product can meet the product flatness index requirement.
Description
Technical Field
The utility model relates to the technical field of processing of new energy automobile parts, in particular to a blade type power battery tray beam welding tool.
Background
In recent years, new energy electric vehicles gradually replace fuel automobiles, and become an increasingly growing automobile type. The power battery in an electric vehicle is a storage component of its electric energy, which is a core component in the whole vehicle. The power battery module is borne by a battery pack shell, and the battery pack shell is connected with a vehicle chassis to form a firm bearing vehicle body. Because the new energy electric vehicle is closely related to the endurance mileage, based on the light weight of the vehicle body, the aluminum vehicle body structure has excellent comprehensive indexes such as light weight, corrosion resistance and recovery residual value, and becomes a choice for more and more new energy vehicles, and the battery pack shell and the battery tray thereof are taken as important structural components, occupy 20-30% of the weight of the battery system, are also core energy sources of the new energy vehicles, and play a key role in the safety and protection of battery modules. The lithium battery is generally arranged at the lower part of the vehicle body and is mainly used for protecting the lithium battery from being damaged when the lithium battery is impacted and extruded from the outside.
Because the traditional battery pack module still needs the connection of pencil, consequently frame tray bottom plate designs into the section bar, and the centre is in addition horizontal or vertical additional strengthening, and the mutual overlap joint of vertical and horizontal roof beam is welded fully, and overall structure rigidity is relatively good, non-deformable, and manufacturing is easy control. But the longitudinal and transverse structural members occupy valuable internal space of the battery pack. In recent years, a blade type lithium iron phosphate power battery is provided, the blade battery does not need a module, a battery pack can be directly formed by an electric core, and the battery pack has more excellent self structural strength, so that a transverse longitudinal beam in the battery pack is omitted, and the overall space utilization rate is improved. The space utilization of the conventional battery is about 40%, while the battery pack space utilization of the blade battery can be improved to 60%. The battery package lower casing (battery tray) that blade battery matees is area Liang Lv sheet metal casing, compares with traditional battery module frame-type tray, and blade battery tray bottom plate adopts 1.5 mm's sheet metal, and the intermediate reinforcing structure of single crossbeam has been set up, has increaseed the degree of difficulty of battery tray manufacturing, has put forward higher requirement to manufacturing, especially needs tight seam to put into single crossbeam part to battery tray frame middle part, then crossbeam both ends top tight frame middle part inboard and firm welding, and its difficult point lies in: (1) The beam welding procedure is carried out after the welding of thin bottom plate, in the welding process of carrying out battery tray crossbeam, the deformation after the welding is particularly difficult to control, the crossbeam is aluminium square tube section bar, if directly paste crossbeam and both sides limit back junction full weld, because crossbeam welding is heated and is taken place the shrink, under the stress effect of crossbeam, the middle part can be protruding, cause whole battery tray shape bending unevenness after the cooling, the tray bottom plate planarization can't satisfy product technical index requirement, cause the rejection rate high, even need further plastic, influence the production delivery schedule. (2) The two ends of the cross beam are required to prop against the inner side surface of the tray frame, so that gaps are prevented from being generated after welding, and the air tightness of the battery tray cannot meet the requirement; however, the precision tolerance of sawing and blanking of the beam profile is limited, zero-error precision sawing cannot be completely achieved, if the length of the beam is slightly shorter than the inner width of the tray frame, risk defects of welding seams can occur, and if the length of the beam is slightly longer than the inner width of the tray frame, the beam is difficult to be embedded into the inner frame for welding.
In the prior art, a welding anti-deformation device or tool applied to a battery tray does not exist, and particularly, the battery tray and a cross beam thereof have special structures and operation steps, and special tools are needed for welding anti-deformation.
Disclosure of Invention
The utility model aims to provide a welding tool for a cross beam of a blade type power battery tray, which can automatically realize a series of actions of pulling and supporting the battery tray, lowering, embedding and inversely deforming the cross beam. The principle is that before the welding of the cross beam, the battery tray is stretched, the cross beam is positioned and put in, the concave welding anti-deformation stress is given to the battery tray, after the welding of the cross beam is carried out, the stress after deformation just can offset the anti-deformation stress, and therefore the final battery tray product can meet the product flatness index requirement.
In order to achieve the above purpose, the technical scheme of the utility model is as follows:
a welding tool for a cross beam of a blade type power battery tray is characterized in that a portal frame is arranged at a central line above a frame, two sides above the portal frame are provided with a pressing hydraulic cylinder, a piston rod of the pressing hydraulic cylinder is downwards connected with a pressing beam, and a cross beam clamping mechanism is arranged on the pressing beam; a plurality of rollers are arranged on two sides of a gantry frame on the frame, and can be lifted up and down through roller cylinders fixed on a beam of the frame; the gantry frame is provided with a plurality of cushion blocks.
The roller has the functions that: the battery tray is conveniently entered from one end of the frame and is sent to a preset position; the lifting and the lowering of the cylinder of the roller enable the battery tray to be switched between the roller support and the cushion block support; the pressing hydraulic cylinder drives the beam clamping mechanism to ascend and descend.
Tensioning clamping claws are respectively hinged to sliding supports on two sides of the portal frame, and the middle parts of the tensioning clamping claws are hinged to piston rods of clamping cylinders hinged to the portal frame; the sliding support is connected with a piston rod of the tensioning hydraulic cylinder.
The tensioning hydraulic cylinder can realize the horizontal stretching action of the tensioning claw through the sliding support, and the clamping cylinder can realize the opening and closing actions of tensioning clamping rotation.
The beam clamping mechanism comprises a rotary clamping cylinder, a piston rod of the rotary clamping cylinder penetrates through the other side of the lower pressing beam and is connected with the beam clamping head. The rotary clamping cylinder is also called a rotary clamping cylinder, and the piston rod of the rotary clamping cylinder can also realize 90-degree rotation in the telescopic process, so that the beam chuck can also realize 90-degree rotation.
And a pressing spring is arranged at the end part of a piston rod of the pressing hydraulic cylinder and is connected with the pressing beam. The function of the pressing spring is that: the rigid downward pressure of the downward pressure hydraulic cylinder is prevented from being directly transmitted to the battery tray, and the situation that the downward pressure is not in place or excessive is caused if the downward pressure amount is controlled inaccurately is avoided.
And the two ends of the lower pressing beam are provided with buffer pressing heads, and the end parts of the buffer pressing heads can be in plane contact with the upper surface of the frame of the battery tray. The buffer pressure head has the functions that: in the process of pressing down the hydraulic cylinder, the buffer spring plays a role in unloading force and buffering, and the cross beam and the battery tray are prevented from being deformed by the instant impact load of the pressing down hydraulic cylinder.
The cushion blocks are divided into side cushion blocks, a center cushion block and movable cushion blocks, the center cushion block is fixed at the center of the frame, the movable cushion blocks are hinged to the frame, the movable cushion blocks are arranged on two sides below the portal frame and can slide horizontally inside and outside, and the movable cushion blocks are driven by cushion block cylinders. When the battery tray is horizontally placed, the side cushion blocks play a role in supporting the battery tray, and when the pressing beam is pressed down for the first time, the movable cushion blocks play a role in supporting the battery tray; when the pressing beam is pressed down in place for the second time, the center cushion block plays a role in supporting the battery tray.
And a plurality of locating clamps are arranged on two sides of the frame to clamp the frame of the battery tray. The locating clamp is used for fixing the position of the battery tray so as to prevent the battery tray from being displaced in the process of embedding the cross beam, and the welding position of the final cross beam is deviated.
The tail end of the frame is provided with a transverse positioning pushing device and a longitudinal positioning pushing device. The positioning and ejecting device can be used for ejecting and positioning after the battery tray is pushed into the rack each time, so that the position accuracy of the battery tray is ensured.
A blade type power battery tray beam welding tool comprises the following steps:
A. the roller in the welding tool is lifted in place by a roller cylinder;
B. pushing the battery tray into a rack tool by an operator through a roller, and positioning and fixing the tray through a positioning clamp and a positioning pushing device;
C. the roller descends and is supported by the side cushion block to prop up the tray;
D. loading the cross beam on the lower pressing beam, and clamping the cross beam by using a cross beam clamping mechanism, wherein the movable cushion blocks are moved inwards to two sides below the cross beam;
E. the tensioning claw descends, claw parts at two sides hook the tray frame, and the tensioning hydraulic cylinder acts to enable the tray frame to be unfolded;
F. the lower pressing beam is pressed down to the movable cushion block with the cross beam descending and clinging to the tray frame, and the cross beam is tightly pressed against the lower pressing beam; the first pressing down aims at embedding the cross beam in the middle of the battery tray;
G. the hydraulic cylinder is tensioned to loosen the tray, the lower pressing beam rises by 5-10mm, the movable cushion block moves outwards and moves horizontally and withdraws, and the positioning pushing device and the positioning clamp are loosened; after the pressing beam is lifted, the tray releases all positioning, so that the battery tray can be freely deformed and is not influenced by external stress when the pressing beam is pressed downwards for the second time to reversely deform the battery tray;
H. the lower pressing beam is pressed down again until the battery tray is in a lower pressing bending state, and the bottom of the tray is propped against the position of the central cushion block; the battery tray is in a limit state of reverse deformation at the moment;
I. the cross beam is welded with the tray, and a handle and a positioning block fitting of the front frame of the tray are welded;
J. after welding is finished, loosening the beam clamping mechanism and lifting the lower pressing beam to the highest position; at the moment, the battery tray is reset, the internal stress of the welding part of the cross beam and the internal stress of the battery tray are counteracted, and the battery tray is in a plane state.
K. The lifting roller supports the battery tray and moves the tray out.
The length of the cross beam is matched with the inner side distance of the frame, and the tolerance is 0 to +7mm. The cross beam with the positive tolerance length is adopted, after the left frame and the right frame are loosened and tensioned, the two ends of the cross beam are tightly propped, so that no gap exists between the cross beam and the left frame and the right frame, and the air tightness of the battery tray is improved.
1. The utility model is applied to the welding of the middle cross beam of the all-aluminum blade type battery tray, and can realize two operations simultaneously: when the battery tray is pulled and supported to be embedded into the cross beam and clamped at the center line of the battery tray, the cross beam is pressed down to enable the battery tray to be welded and inversely deformed, after the cross beam is welded, the stress after deformation can just offset the stress after the deformation, and therefore the final battery tray product can meet the product flatness index requirement.
2. The tooling equipment has high automation degree, and can complete a series of action steps of stretching the frame of the battery tray, twice lowering and compacting the cross beam, bending and supporting the battery tray and the like on one piece of equipment; the whole equipment mechanism is reasonable in operation, and the production action beats are compact and high in efficiency; the operation is convenient, and operating personnel only need simple training can be on duty, and the maintenance is convenient.
3. The utility model has accurate positioning and reasonable control of the downward pressure, and can not generate the phenomenon of crushing and damaging the cross beam or the battery tray, thereby greatly reducing the rejection rate.
Drawings
FIG. 1 is a schematic view of the appearance structure of the present utility model;
FIG. 2 is an enlarged view of the structure at I in FIG. 1;
FIG. 3 is an enlarged view of the structure at II in FIG. 1;
FIG. 4 is an enlarged block diagram of the portion III in FIG. 1;
FIG. 5 is a schematic diagram of the front view direction structure of the present utility model;
FIG. 6 is a schematic diagram illustrating the structure of FIG. 5A in a side view;
FIG. 7 is a schematic diagram showing the structure of FIG. 5B in a side view;
FIG. 8 is a schematic top view of the present utility model;
FIG. 9 is a schematic view of the appearance of a battery tray;
the serial numbers and part names in the figures are: 1-a frame; 11-positioning clips; 12-positioning a pushing device; 2-portal frames; 21-pushing down the hydraulic cylinder; 3-pressing down the beam; 31-a rotary clamping cylinder; 32-a beam chuck; 33-pressing down the spring; 34-buffer ram; 41-tensioning hydraulic cylinders; 42-clamping a cylinder; 43-tensioning clamping jaws; 51-a roller; 52-side cushion blocks; 53-cushion block cylinder; 54-roller cylinder; 55-center pad; 56-a movable cushion block; 6-a cross beam.
Detailed Description
Example 1
The welding fixture for the cross beam of the blade type power battery tray is characterized in that a portal frame 2 is arranged at the middle line of the upper part of a frame 1, a pressing hydraulic cylinder 21 is arranged on two sides of the upper part of the portal frame 2, a piston rod of the pressing hydraulic cylinder 21 is downwards connected with a pressing beam 3, and a cross beam clamping mechanism is arranged on the pressing beam 3; a plurality of rollers 51 are arranged on two sides of a frame of the portal frame 2, and the rollers 51 can be lifted up and down by roller cylinders 54 fixed on a beam of the frame 1; the frame of the portal frame 2 is provided with a plurality of cushion blocks.
Tensioning claws 43 are respectively hinged on sliding supports on two sides of the portal frame 2, and the middle parts of the tensioning claws 43 are hinged with piston rods of clamping cylinders 42 hinged on the portal frame 2; the sliding support is connected with a piston rod of the tensioning hydraulic cylinder 41.
The beam clamping mechanism comprises a rotary clamping cylinder 31, a piston rod of the rotary clamping cylinder 31 penetrates through the other side of the lower pressing beam 3 and is connected with a beam chuck 32.
The end of the piston rod of the pressing hydraulic cylinder 21 is provided with a pressing spring 33 connected with the pressing beam 3.
And buffer pressure heads 34 are arranged at two ends of the lower pressure beam 3, and the ends of the buffer pressure heads 34 can be in plane contact with the upper surface of the frame of the battery tray.
The cushion blocks are divided into side cushion blocks 52, a center cushion block 55 and a movable cushion block 56, the center cushion block 55 is fixed at the center of the frame, the movable cushion block 56 is hinged on the frame, the movable cushion block 56 is arranged on two sides below the portal frame 2 and can slide horizontally inside and outside, and the movable cushion block 56 is driven by a cushion block cylinder 53.
And a plurality of positioning clamps 11 are arranged on two sides of the frame 1 to clamp the battery tray frame.
The tail end of the frame 1 is provided with a transverse and a longitudinal positioning pushing device 12.
Claims (8)
1. The welding tool for the cross beam of the blade type power battery tray is characterized in that a portal frame (2) is arranged at the center line of the upper part of a frame (1), two sides above the portal frame (2) are provided with a pressing hydraulic cylinder (21), a piston rod of the pressing hydraulic cylinder (21) is downwards connected with a pressing beam (3), and a cross beam clamping mechanism is arranged on the pressing beam (3); a plurality of rollers (51) are arranged on two sides of a frame of a portal frame (2) on the frame, and the rollers (51) can be lifted and lowered through roller cylinders (54) fixed on a beam of the frame (1); a plurality of cushion blocks are arranged on a frame of the portal frame (2).
2. The blade power cell tray beam welding fixture of claim 1, wherein: tensioning clamping claws (43) are respectively hinged on sliding supports on two sides of the portal frame (2), and the middle parts of the tensioning clamping claws (43) are hinged with piston rods of clamping cylinders (42) hinged on the portal frame (2); the sliding support is connected with a piston rod of a tensioning hydraulic cylinder (41).
3. The blade power cell tray beam welding fixture of claim 2, wherein: the beam clamping mechanism comprises a rotary clamping cylinder (31), and a piston rod of the rotary clamping cylinder (31) penetrates through the other side of the lower pressing beam (3) and is connected with a beam chuck (32).
4. The blade power cell tray beam welding fixture of claim 1, wherein: and a pressing spring (33) is arranged at the end part of a piston rod of the pressing hydraulic cylinder (21) and is connected with the pressing beam (3).
5. The blade power cell tray beam welding fixture of claim 1, wherein: and buffer pressure heads (34) are arranged at two ends of the lower pressure beam (3), and the end parts of the buffer pressure heads (34) can be in plane contact with the upper surface of the frame of the battery tray.
6. The blade power cell tray beam welding fixture of claim 1, wherein: the cushion blocks are divided into side cushion blocks (52), a center cushion block (55) and movable cushion blocks (56), the center cushion block (55) is fixed at the center of the frame, the movable cushion blocks (56) are hinged to the frame, the movable cushion blocks (56) are arranged on two sides below the portal frame (2) and can slide horizontally inside and outside, and the movable cushion blocks are driven by cushion block cylinders (53).
7. The blade power cell tray beam welding fixture of claim 1, wherein: and a plurality of locating clamps (11) are arranged on two sides of the frame (1) to clamp the frame of the battery tray.
8. The blade power cell tray beam welding fixture of claim 1, wherein: the tail end of the frame (1) is provided with a transverse positioning pushing device (12) and a longitudinal positioning pushing device (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223531280.8U CN219379516U (en) | 2022-12-29 | 2022-12-29 | Blade type power battery tray beam welding tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223531280.8U CN219379516U (en) | 2022-12-29 | 2022-12-29 | Blade type power battery tray beam welding tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219379516U true CN219379516U (en) | 2023-07-21 |
Family
ID=87191866
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223531280.8U Active CN219379516U (en) | 2022-12-29 | 2022-12-29 | Blade type power battery tray beam welding tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219379516U (en) |
-
2022
- 2022-12-29 CN CN202223531280.8U patent/CN219379516U/en active Active
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