CN117861929A - All-insulation spraying system and all-insulation spraying method for power battery - Google Patents
All-insulation spraying system and all-insulation spraying method for power battery Download PDFInfo
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- CN117861929A CN117861929A CN202410270309.6A CN202410270309A CN117861929A CN 117861929 A CN117861929 A CN 117861929A CN 202410270309 A CN202410270309 A CN 202410270309A CN 117861929 A CN117861929 A CN 117861929A
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- 238000009413 insulation Methods 0.000 title claims abstract description 66
- 238000005507 spraying Methods 0.000 title claims abstract description 59
- 238000003801 milling Methods 0.000 claims abstract description 148
- 238000005452 bending Methods 0.000 claims abstract description 123
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 92
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 92
- 230000007246 mechanism Effects 0.000 claims abstract description 54
- 238000000576 coating method Methods 0.000 claims abstract description 17
- 239000011248 coating agent Substances 0.000 claims abstract description 16
- 239000003973 paint Substances 0.000 claims abstract description 12
- 238000003466 welding Methods 0.000 claims description 93
- 239000007921 spray Substances 0.000 claims description 35
- 238000003825 pressing Methods 0.000 claims description 27
- 230000000670 limiting effect Effects 0.000 claims description 26
- 238000010422 painting Methods 0.000 claims 2
- 238000004146 energy storage Methods 0.000 abstract description 2
- 230000004308 accommodation Effects 0.000 description 4
- 238000003780 insertion Methods 0.000 description 4
- 230000037431 insertion Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000009467 reduction Effects 0.000 description 4
- 239000004411 aluminium Substances 0.000 description 3
- 239000011810 insulating material Substances 0.000 description 3
- YWXYYJSYQOXTPL-SLPGGIOYSA-N isosorbide mononitrate Chemical compound [O-][N+](=O)O[C@@H]1CO[C@@H]2[C@@H](O)CO[C@@H]21 YWXYYJSYQOXTPL-SLPGGIOYSA-N 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000002829 reductive effect Effects 0.000 description 3
- 230000000712 assembly Effects 0.000 description 2
- 238000000429 assembly Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000013011 mating Effects 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 235000008331 Pinus X rigitaeda Nutrition 0.000 description 1
- 235000011613 Pinus brutia Nutrition 0.000 description 1
- 241000018646 Pinus brutia Species 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000036961 partial effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
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Abstract
The invention belongs to the technical field of energy storage device spraying, and particularly relates to a power battery all-insulation spraying system and a all-insulation spraying method. This power battery all insulation spraying system includes: the pre-spraying mechanism is suitable for spraying insulating paint on the surface of the milling opening aluminum shell outside the milling opening and the surface of the bending piece matched with the milling opening so as to respectively form insulating layers; a multi-fold angle sheet assembly mechanism; the full insulation forming mechanism is suitable for receiving the bending piece inserted with the multi-angle piece, so that the bending piece is fixed and covered on the milling opening, and the insulation layer of the bending piece is connected with the insulation layer outside the milling opening. The full-insulation spraying system for the power battery can enable the insulation coating on the outer surface of the aluminum shell of the obtained power battery to be complete, and the aluminum shell is fully insulated.
Description
Technical Field
The invention belongs to the technical field of energy storage device spraying, and particularly relates to a power battery all-insulation spraying system and a all-insulation spraying method.
Background
A power battery pack contains a plurality of square batteries, and during production, the battery cells are firstly arranged in an aluminum shell, then a cover plate is covered, the cover plate is welded with a shell to form a square battery, and finally a certain number of square batteries are assembled and put into the shell of the battery pack. Before the square batteries are arranged in the battery pack shell, insulating treatment is further needed for each square battery, so that a barrier is formed between the aluminum shell and the aluminum shell, and safety is improved.
The insulating treatment mode of square battery has at present attached insulating film outside the aluminium shell and spouts insulating material on the aluminium shell and form insulating coating two kinds, because the former exists the possibility that the insulating film pine takes off, and the insulating coating who sprays the formation can not drop basically, consequently spout insulating material on the aluminium shell and form insulating coating's mode is a development direction of battery package, especially for the square battery of size great, because calorific capacity is big, the insulating film that attaches on it takes off more easily.
For the mode of attaching the insulating film outside the aluminum shell, the film attaching link is only required to be arranged after the square battery is assembled, and the film attaching link only relates to attaching the insulating film outside the aluminum shell, so that no influence is basically generated on the element arranged in the cover plate on the aluminum shell or the battery cell arranged in the aluminum shell. However, after the mode of spraying insulating materials on the aluminum shell to form an insulating coating is changed, if the spraying links are placed at the end, some processing modes required by many spraying links at present can cause adverse effects on elements and battery cells in the cover plate, for example, in patent document with application number of CN202221650017.8, deep drying is required to be carried out for 20 minutes at 150 ℃ after the coating is sprayed, so that the battery cells and the cover plate are arranged after the insulating coating on the outer surface of the aluminum shell is formed, but when the cover plate and the shell are welded, the insulating coating near the welding seam is burnt out by high temperature generated by welding, and the burnt out is difficult to compensate, so that a gap is formed in the originally complete insulating coating on the outer surface of the aluminum shell, and the aluminum shell of the power battery is not insulated completely.
Disclosure of Invention
The invention aims to provide a full-insulation spraying system and a full-insulation spraying method for a power battery, which are used for solving the technical problem that when an aluminum shell of the power battery is welded with a cover plate, an insulating coating near a welding line can be burnt out by high temperature generated by welding, so that the aluminum shell of the power battery is not fully insulated.
In order to solve the technical problems, the invention provides a full-insulation spraying system of a power battery, which comprises: the pre-spraying mechanism is suitable for spraying insulating paint on the surface of the milling opening aluminum shell outside the milling opening and the surface of the bending piece matched with the milling opening so as to respectively form insulating layers; the multi-folded angle piece assembling mechanism is suitable for splicing the multi-folded angle piece with the folded piece; the full-insulation forming mechanism is suitable for receiving a bending piece inserted with a multi-angle piece, after the cover plate is combined with the milling opening, the bending piece inserted with the multi-angle piece is turned over, so that the welding end of the multi-angle piece is propped against a welding groove formed by the cover plate and the milling opening, the bending piece is enabled to be positioned above the welding groove obliquely to avoid welding laser, the bending piece is turned over continuously after the welding end, the cover plate and the milling opening are welded, the multi-angle piece is folded and compacted, the bending piece is enabled to be fixed and cover the milling opening, and an insulating layer of the bending piece is connected with an insulating layer outside the milling opening.
Further, the all-insulation forming mechanism includes: the milling opening aluminum shell accommodating seat is provided with an aluminum shell accommodating groove matched with the milling opening aluminum shell; the overturning driving assemblies are arranged on the milling opening aluminum shell accommodating seat along the notch of the aluminum shell accommodating groove; the bending piece overturning plate is driven by the overturning driving assembly and is inclined downwards when rotating to a receiving position, so that the received bending piece inserted with the multi-folding angle piece slides onto a sucker of the bending piece overturning plate to be sucked.
Further, the multi-folded corner piece includes: when the welding end is propped against a welding groove formed by the cover plate and the milling opening, a plurality of outward folded sections facing the outside of the milling opening aluminum shell and a plurality of inward folded sections facing the inside of the milling opening aluminum shell; the bottom of the multi-folded angle piece is an outward folded section, so that the rest inward folded sections, outward folded sections and folded pieces in the multi-folded angle piece are positioned obliquely above a welding groove, and welding laser is avoided.
Further, the bending piece includes: a milling opening side cover section and a milling opening upper cover section; the bottom surface of the upper cover section of the milling opening is provided with a folding accommodating through groove; the side surface of the upper cover section of the milling opening is provided with a bent angle piece inserting through hole, and the bent angle piece inserting through hole is communicated with the bottom of the folding containing through groove so as to form a pressing part between the bent angle piece inserting through hole and the bottom of the folding containing through groove; the top of the multi-angle piece is connected with an inserting arc section which is matched with the bent inserting through hole of the multi-angle piece, and the orientation of the inserting arc section is opposite to the orientation of the outer folding section or the inner folding section of the top of the multi-angle piece so as to form an initial angle.
Further, the length of the outer folding section and the length of the inner folding section are smaller than the horizontal distance from the welding groove to the milling opening side wall, so that the outer folding section and the inner folding section are folded and compacted and then are positioned in the milling opening area; the folding accommodation through groove is adapted to the outer folding section and the inner folding section, so that after the welding end, the cover plate and the milling opening of the multi-folding angle piece are welded by welding laser, the corresponding overturning driving assembly accommodates the outer folding section and the inner folding section which are gradually folded when the bending piece overturning plate continues overturning until the outer folding section and the inner folding section are compacted, the milling opening side covering section is fixed and covers the side wall of the milling opening, and the milling opening upper covering section is fixed and covers the opening surface of the milling opening.
Further, bending pieces positioned at four corners of the notch of the aluminum shell accommodating groove are provided with adjacent bending piece covering notches, so that the bending pieces are fixed and covered on the milling opening and then mutually abutted.
Further, the pre-spray mechanism includes: a spraying turntable, on which a spraying placing plate is arranged; and the nozzle is arranged on the side surface of the spraying rotary table and faces the spraying placing plate.
Further, the pre-spray mechanism further includes: and the spraying sheath is matched with the milling opening of the milling opening aluminum shell and is suitable for shielding the milling opening when the milling opening aluminum shell is sprayed.
Further, the multi-fold angle sheet assembling mechanism includes: the assembly base is provided with a bending piece limiting groove; the multi-angle piece limiting table is arranged on the assembly base and faces the bending piece limiting groove, and the table top is provided with the multi-angle piece limiting groove so that the inserting arc section of the multi-angle piece placed in the multi-angle piece limiting groove is aligned with the bending piece inserting curved through hole of the bending piece placed in the bending piece limiting groove; the pressing push rod is arranged on one side of the bending piece limiting groove, the pushing end is provided with a pressing block matched with the pressing part, so that the pressing push rod is pushed out after the inserting arc section is inserted into the bent through hole of the bending piece, the pressing part is pressed through the pressing block, and the inserting arc section is hooped.
On the other hand, the invention also provides a power battery full-insulation spraying method, which comprises the following steps: the power battery all-insulation spraying system is as described above; spraying insulating paint on the surface of the milling opening aluminum shell outside the milling opening and the surface of the bending piece matched with the milling opening through a pre-spraying mechanism to form insulating layers respectively; inserting the multi-folded corner piece into the bending piece through a multi-folded corner piece assembling mechanism; the bending piece inserted with the multi-angle piece is received through the all-insulation forming mechanism, after the cover plate is combined with the milling opening, the bending piece inserted with the multi-angle piece is turned over, so that the welding end of the multi-angle piece is propped against a welding groove formed by the cover plate and the milling opening, the bending piece is positioned above the welding groove to avoid welding laser, the welding end, the cover plate and the milling opening are welded and then turned over continuously, the multi-angle piece is folded and compacted, the bending piece is fixed and covered on the milling opening, and an insulating layer of the bending piece is connected with an insulating layer outside the milling opening.
The invention has the advantages that the surface of the milling opening aluminum shell outside the milling opening and the surface of the bending piece matched with the milling opening can be sprayed with insulating paint through the pre-spraying mechanism, so that insulating layers are respectively formed, after the cover plate is combined with the milling opening, the welding end of the bending piece inserted with the multi-angle piece is abutted against a welding groove formed by the cover plate and the milling opening through the full-insulation forming mechanism, and the bending piece is positioned above the welding groove, so that when welding laser scans, welding spots are heated to the welding end, the cover plate and the milling opening only, the insulating layers of the milling opening aluminum shell on the outer surface of the milling opening and the insulating layers of the surface of the bending piece are not burnt, and after the welding laser scans and the temperature of the welding seam is reduced, the full-insulation forming mechanism can continuously fold and compact the multi-angle piece, the folded and compacted multi-angle piece can fix the bending piece and cover the milling opening, the insulating layers of the bending piece are just connected with the insulating layers of the milling opening aluminum shell outside the milling opening, so that the obtained aluminum shell has complete insulating coating.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the prior description will be briefly described, and it is apparent that the drawings in the following description are some embodiments of the invention and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of the pre-spray mechanism of the power cell all-insulation spray system of the present invention;
FIG. 2 is a schematic structural view of a multi-folded corner piece assembly mechanism of the power cell all-insulation spray coating system of the present invention;
FIG. 3 is an enlarged view at A in FIG. 2;
FIG. 4 is a schematic illustration of the all-insulation forming mechanism of the power cell all-insulation spray system of the present invention receiving a milled aluminum can;
fig. 5 is an enlarged view at B in fig. 4;
FIG. 6 is a schematic illustration of the all-insulation forming mechanism of the power cell all-insulation spray system of the present invention with the weld end of the multi-folded corner piece abutting in the weld groove;
fig. 7 is an enlarged view at C in fig. 6;
FIG. 8 is a side view of the all-insulation forming mechanism of the power cell all-insulation spray system of the present invention with the weld end of the multi-folded corner piece abutting in the weld groove;
fig. 9 is an enlarged view of D in fig. 8;
FIG. 10 is a partial view of the all-insulation forming mechanism of the power cell all-insulation spray system of the present invention with the weld end of the multi-folded corner piece abutting in the weld groove;
fig. 11 is an enlarged view at E in fig. 10;
FIG. 12 is a side view of the all-insulation forming mechanism of the power cell all-insulation spray system of the present invention after folding and compacting the multi-folded corner pieces;
fig. 13 is an enlarged view of F in fig. 12;
in the figure:
a pre-spray mechanism 100, a spray turntable 110, a spray placement plate 120, a nozzle 130, a spray sheath 140,
milling the aluminum shell 200, milling the mouth 210,
bending piece 300, milling opening side cover section 310, milling opening upper cover section 320, folding accommodation through groove 321, bending angle piece inserting curved through hole 322, pressing part 323, adjacent bending piece cover notch 330,
the multi-folded corner piece assembling mechanism 400, the assembling base 410, the folded corner piece limiting slot 411, the multi-folded corner piece limiting table 420, the multi-folded corner piece limiting slot 421, the pressing push rod 430, the pressing block 431,
multiple fold angle tab 500, weld end 510, outer fold segment 520, inner fold segment 530, mating arc segment 540, initial fold angle 550,
all insulation forming mechanism 600, milled aluminum housing receptacle 610, aluminum housing receptacle 611, flip drive assembly 620, flip motor 621, flip reduction box 622, bent sheet flip plate 630, suction cup 631,
cover plate 700, cover plate groove 710,
the groove 800 is welded and,
welding laser 910.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments of the present invention that would be within the purview of one of ordinary skill in the art without the particular effort being made are within the scope of the invention.
Examples
As shown in fig. 1, the present invention provides a power battery all-insulation spray coating system, comprising: a pre-spraying mechanism 100 adapted to spray an insulating paint on the surface of the milled aluminum case 200 outside the milled port 210 and on the surface of the bending piece 300 adapted to the milled port 210 to form insulating layers, respectively; as shown in fig. 2, the multi-tab assembly mechanism 400 is adapted to insert a multi-tab 500 into the tab 300; as shown in fig. 4, the all-insulation forming mechanism 600 is adapted to receive the bending piece 300 with the multi-folded corner piece 500 inserted therein, referring to fig. 10, after the cover plate 700 is covered with the milling opening 210, the bending piece 300 with the multi-folded corner piece 500 inserted therein is turned over, referring to fig. 11, the welding end 510 of the multi-folded corner piece 500 is abutted against the welding groove 800 formed by the cover plate 700 and the milling opening 210, so that the bending piece 300 is located obliquely above the welding groove 800 and is turned over continuously after the welding end 510, the cover plate 700 and the milling opening 210 are welded, and referring to fig. 12 and 13, the multi-folded corner piece 500 is folded and compacted so that the bending piece 300 is fixed and covered on the milling opening 210, and the insulating layer of the bending piece 300 is connected with the insulating layer outside the milling opening 210.
The aluminum shell of the power battery is thinner and only a few millimeters, the screw connection strength is insufficient, so that the welding is the most convenient connection mode for the aluminum shell of the power battery, but when the aluminum shell of the power battery is welded with the cover plate, the insulating coating near the welding seam can be burnt out by the high temperature generated by the welding, so that the full-insulation spraying system of the power battery can spray insulating paint on the surface of the aluminum shell 200 outside the milling opening 210 and the surface of the bending piece 300 matched with the milling opening 210 through the pre-spraying mechanism 100, thereby respectively forming insulating layers, after the cover plate 700 is covered with the milling opening 210, the welding end 510 of the bending piece 300 inserted with the multi-folded corner piece 500 is firstly abutted in the welding groove 800 formed by the cover plate 700 and the milling opening 210 through the full-insulation forming mechanism 600, and the welding point 300 is positioned above the welding groove 800, when the welding laser scans, the welding point can only be heated to the welding end 510, the cover plate 700 and the milling opening 210, the insulating layer on the outer surface of the milling opening aluminum shell 200 and the insulating layer on the outer surface of the milling opening 210 can not be burnt, and the insulating layer on the outer surface of the insulating layer of the insulating piece 300 can be compacted, and the full-insulation layer of the insulating layer 300 can be compacted after the full-insulation layer is formed, and the full-insulation layer is folded and the insulating layer is folded over the insulating layer is formed on the outer surface of the insulating layer 300, and the insulating layer is formed on the insulating layer is continuously and the insulating layer is folded and the insulating layer is formed on the insulating layer and the insulating layer 300, and the insulating layer is folded and the insulating layer is welded and the insulating layer is covered.
In at least one embodiment, the milling opening 210 on the milled aluminum shell 200 may be turned by a milling machine, referring to fig. 11, the inner side of the milling opening 210 is chamfered, the cover plate 700 is poured out of the cover plate groove 710, and when the cover plate is covered, the cover plate groove 710 abuts against the chamfer of the milling opening 210 to form the welding groove 800.
As shown in fig. 4, the all-insulation forming mechanism 600 may include: a milling aluminum shell accommodating seat 610, on which an aluminum shell accommodating groove 611 adapted to the milling aluminum shell 200 is formed; a plurality of overturning driving components 620, which are arranged on the milling-mouth aluminum shell accommodating seat 610 along the notch of the aluminum shell accommodating groove 611; the bending piece overturning plate 630 is driven by the overturning driving component 620, and is inclined downwards when rotating to the receiving position in combination with fig. 5, so that the received bending piece 300 inserted with the multi-bending piece 500 slides onto the sucking disc 631 of the bending piece overturning plate 630 to be sucked. In at least one embodiment, one manipulator may be used to grasp and transfer the milled aluminum housing 200, with the assembled battery cell, cover 700, into the housing pocket 611, and another manipulator may be used to grasp and transfer the bent tab 300, with the multi-tab 500 attached thereto, to the bent tab flip plate 630 in the receiving position. In at least one embodiment, referring to fig. 6, 8 and 9, the turning driving assembly 620 may take the form of a turning motor 621 cooperating with a turning reduction gearbox 622, the turning reduction gearbox 622 is in transmission connection with the turning motor 621, an output shaft extending from two sides of the turning reduction gearbox 622 is connected to the turning plate 630, and the turning motor 621 rotates the turning plate 630 correspondingly through forward and reverse rotation.
As shown in fig. 7, the multi-folded corner piece 500 may include: referring to fig. 11 and 10, when the welding end 510 abuts against the welding groove 800 formed by the cover plate 700 and the milled mouth 210, a plurality of outward folded sections 520 facing the outside of the milled mouth aluminum case 200 and a plurality of inward folded sections 530 facing the inside of the milled mouth aluminum case 200; in at least one embodiment, the multi-folded gusset 500 is a two-piece outer fold 520 and two-piece inner fold 530; the bottom of the multi-folded corner piece 500 is an outer folded section 520, so that the rest of the inner folded section 530, the outer folded section 520 and the folded piece 300 in the multi-folded corner piece 500 are located obliquely above the welding groove 800, avoiding the welding laser.
As shown in fig. 7, the bending piece 300 may include: a milling-port-side cover section 310 and a milling-port-upper cover section 320; the bottom surface of the milling opening upper covering section 320 is provided with a folding accommodating through groove 321; referring to fig. 3, a bent-tab insertion through hole 322 is formed on the side surface of the milling opening upper cover section 320, and the bent-tab insertion through hole 322 is communicated with the bottom of the folding accommodation through groove 321, so as to form a pressing part 323 between the bent-tab insertion through hole 322 and the bottom of the folding accommodation through groove 321; referring to fig. 3 and 7, a plugging arc 540 is connected to the top of the multi-folded corner piece 500, and is matched with the plugging curved through hole 322 of the multi-folded corner piece, and the plugging arc 540 is opposite to the outer folded section 520 or the inner folded section 530 of the top of the multi-folded corner piece 500, so as to form an initial folded corner 550. In at least one embodiment, the dog leg insertion curved through hole 322 may be cut by wire cutting. Referring to fig. 7, in at least one embodiment, the top of the multi-fold tab 500 is oriented toward the inner fold 530 within the milled aluminum can 200, so the plug arc 540 is oriented toward the outside of the milled aluminum can 200, thereby forming an initial fold 550 between the plug arc 540 and the top inner fold 530 to smoothly cause folding of the multi-fold tab 500.
Referring to fig. 11 and 13, in at least one embodiment, the length of the outer folded section 520 and the length of the inner folded section 530 are smaller than the horizontal distance from the welding groove 800 to the side wall of the milled port 210, so that the outer folded section 520 and the inner folded section 530 are folded and compacted and positioned in the region of the milled port 210, and do not prop against the milled port side cover section 310, thereby ensuring that the milled port side cover section 310 smoothly covers the side wall of the milled port 210; the folding accommodating through groove 321 is adapted to the outer folding section 520 and the inner folding section 530, so as to accommodate the outer folding section 520 and the inner folding section 530 which are gradually folded when the corresponding overturning driving assembly 620 continuously overturns the folding piece overturning plate 630 after the welding end 510, the cover plate 700 and the milling opening 210 of the multi-folding piece 500 are welded by the welding laser until the outer folding section 520 and the inner folding section 530 are compacted, the milling opening side covering section 310 is fixed and covered on the side wall of the milling opening 210, and the milling opening upper covering section 320 is fixed and covered on the opening surface of the milling opening 210.
As shown in fig. 5 and 7, the bending pieces 300 at the four corners of the notch of the aluminum housing receiving groove 611 are provided with adjacent bending piece covering notches 330, so that the bending pieces 300 are fixed and covered on the milling opening 210 to abut against each other.
As shown in fig. 1, the pre-spray mechanism 100 may include: a spray turntable 110 on which a spray placement plate 120 is provided; and a nozzle 130 provided at a side of the spray turntable 110 and facing the spray placement plate 120.
As shown in fig. 1, the pre-spray mechanism 100 may further include: a spray coating jacket 140, which is adapted to the milling opening 210 of the milled aluminum housing 200, is adapted to shield the milling opening 210 when the milled aluminum housing 200 is sprayed.
When the milling opening aluminum shell 200 is sprayed, firstly, the spraying sheath 140 is arranged on the milling opening 210, then the bottom of the milling opening aluminum shell 200 is upwards arranged on the spraying turntable 110, the surface of the milling opening aluminum shell 200 outside the milling opening 210 is sprayed with insulating paint in the rotation process, and the spraying insulating paint is cured in a corresponding mode; when the bending piece 300 is covered on the milled aluminum shell 200, the outward side and the side contacted with the milled opening 210 are provided with insulating paint, but when the bending piece 300 is sprayed, the bending piece 300 can be directly placed on the spraying turntable 110 with one side facing upwards, after the spraying is finished on the side, the other side facing upwards, and then the spraying is finished.
As shown in fig. 2, the multi-fold panel assembly mechanism 400 may include: the assembly base 410 is provided with a bending piece limiting slot 411; a multi-dog-ear limiting stand 420 disposed on the assembly base 410 and facing the bending piece limiting slot 411, wherein a multi-dog-ear limiting slot 421 is formed on the table, and fig. 3 is combined to align the inserting arc section 540 of the multi-dog-ear 500 placed in the multi-dog-ear limiting slot 421 with the dog-ear inserting curved through hole 322 of the bending piece 300 placed in the bending piece limiting slot 411; the pressing push rod 430 is disposed at one side of the bending piece limiting slot 411, and the pushing end is provided with a pressing block 431 adapted to the pressing portion 323, so that the pressing push rod is pushed out after the inserting arc segment 540 is inserted into the bending piece inserting curved through hole 322, the pressing portion 323 is pressed by the pressing block 431, and the inserting arc segment 540 is hooped. In at least one embodiment, the multi-folded angle piece 500 can be manually pushed into the bending piece 300, then the pressing push rod 430 is started, the pressing block 431 is pushed out, the pressing part 323 is pressed, and the inserting arc segment 540 is hooped, so that the multi-folded angle piece 500 is tightly inserted into the bending piece 300.
The working process of the all-insulation spraying system of the power battery is as follows: as shown in fig. 1, insulating coatings are sprayed on the surfaces of the milled aluminum shell 200 except the milled openings 210 and the surfaces of the bending pieces 300 through the pre-spraying mechanism 100 to form insulating layers respectively; as shown in fig. 2, the multi-folded corner piece 500 is inserted into the folded corner piece 300 by the multi-folded corner piece assembling mechanism 400; in the initial state, as shown in fig. 4, all the turning driving assemblies 620 turn the turning plates 630 to the receiving position, the milled aluminum case 200 with the assembled battery cell and cover plate 700 is gripped and sent into the aluminum case accommodating groove 611, after the bending plates 300 with the multi-folded angle pieces 500 inserted therein are gripped and sent to the turning plates 630 with the turning plates 630 in the receiving position, as shown in fig. 6, the first turning driving assembly 620 turns the corresponding turning plates 630 to the milled aluminum case 200 by a certain angle, as shown in fig. 7, the welding ends 510 of the multi-folded angle pieces 500 are abutted against the welding grooves 800 formed by the cover plate 700 and the milled holes 210, at this time, as shown in fig. 10 and 11, the multi-folded angle pieces 500, the bending pieces 300 and the turning plates 630 are all positioned obliquely above the welding grooves 800, the welding laser 910 stops the welding ends 510 with the cover plate 700 and the milled holes 210, and the temperature at the weld joint is reduced, the first flip drive assembly 620 continues to turn the folded sheet flip plate 630 toward the milled aluminum housing 200, at which time the welded end 510 of the multi-folded sheet 500 is welded to the cover 700 and the milled opening 210, and an initial fold 550 is formed between the mating arc 540 and the top inner folded section 530, so that the outer folded section 520 and the inner folded section 530 of the multi-folded sheet 500 are gradually folded, the folded receiving channel 321 receives the gradually folded outer folded section 520 and inner folded section 530, as shown in fig. 12 and 13, until the outer folded section 520 and the inner folded section 530 are compacted, the milled opening side cover section 310 is fixed and covers the side wall of the milled opening 210, the milled opening upper cover section 320 is fixed and covers the opening face of the milled opening 210, the insulating layer of the folded sheet 300 is connected to the insulating layer of the milled opening aluminum housing 200 outside the milled opening 210, after which the suction cup 631 releases the folded sheet flip plate 630 is turned back to the receiving position by the first flip drive assembly 620, the rest of the overturning driving assembly 620 is used for fixing and covering the rest of the bending pieces 300 on the milling opening 210, and finally, one circle of the milling opening 210 is covered with the bending pieces 300, so that the insulating coating on the outer surface of the aluminum shell of the obtained power battery is complete, the aluminum shell is fully insulated, the bending pieces 300 are physically fixed on the milling opening 210 through the multi-angle pieces 500 which are welded on the milling opening 210 and folded and compacted after the bending pieces 210 are welded, after one circle of the milling opening 210 is covered with the bending pieces 300, all the bending pieces 300 which are mutually abutted together form mutual limiting, and the encircling bending pieces 300 are firmly connected with the milling opening 210 and cannot have loosening problems like adhesion.
In at least one embodiment, there is also provided a method of fully insulating a power cell, comprising: the power battery all-insulation spraying system is as described above; the surface of the milling opening aluminum shell 200 outside the milling opening 210 and the surface of the bending piece 300 matched with the milling opening 210 are sprayed with insulating paint through the pre-spraying mechanism 100 to form insulating layers respectively; the multi-folded angle piece 500 is spliced with the bending piece 300 through the multi-folded angle piece assembling mechanism 400; the bending piece 300 inserted with the multi-angle piece 500 is received by the all-insulation forming mechanism 600, after the cover plate 700 is covered with the milling opening 210, the bending piece 300 inserted with the multi-angle piece 500 is turned over, so that the welding end 510 of the multi-angle piece 500 is abutted against a welding groove 800 formed by the cover plate 700 and the milling opening 210, the bending piece 300 is enabled to be positioned obliquely above the welding groove 800 to avoid welding laser, the welding end 510, the cover plate 700 and the milling opening 210 are continuously turned over after welding, the multi-angle piece 500 is folded and compacted, the bending piece 300 is fixed and covered on the milling opening 210, and an insulating layer of the bending piece 300 is connected with an insulating layer outside the milling opening 210.
The spraying process and the technical effects of the full-insulation spraying method for the power battery are described above, and are not repeated.
In view of the above, considering that the aluminum case of the power battery is thinner, the strength of the screw connection is insufficient, so that the welding is the most convenient connection mode for the aluminum case of the power battery, but when the aluminum case of the power battery is welded with the cover plate, the insulating coating near the welding seam is burnt out by the high temperature generated by the welding, the full-insulation spraying system of the power battery can spray insulating paint on the surface of the milled aluminum case 200 except the milled port 210 and the surface of the bending piece 300 matched with the milled port 210 through the pre-spraying mechanism 100, thereby respectively forming insulating layers, and after the cover plate 700 is covered with the milled port 210, the welding end 510 of the bending piece 300 inserted with the multi-angle piece 500 is abutted in the welding groove 800 formed by the cover plate 700 and the milled port 210 through the full-insulation forming mechanism 600, and the bending piece 300 is positioned obliquely above the welding groove 800, so that the welding laser is only heated to the welding point 510, the cover plate 700 and the milled port 210, the insulating layer of the milling opening aluminum shell 200 on the outer surface of the milling opening 210 and the insulating layer of the surface of the bending sheet 300 can not be burnt, after the welding laser sweeps and the temperature of a welding seam is reduced, the full insulation forming mechanism 600 can continuously fold and compact the multi-folded corner sheet 500, the folded and compacted multi-folded corner sheet 500 can enable the bending sheet 300 to be fixed and cover the milling opening 210, the insulating layer of the bending sheet 300 is just connected with the insulating layer of the milling opening aluminum shell 200 outside the milling opening 210, the insulating coating of the outer surface of the aluminum shell of the obtained power battery is complete, the aluminum shell is fully insulated, the bending sheet 300 is physically fixed on the milling opening 210 through welding the multi-folded corner sheet 500 firstly at the milling opening 210 and then folding and compacting after the bending sheet 300 is covered on one circle of the milling opening 210, all the mutually abutted bending sheets 300 are mutually limited, the surrounding bending sheets 300 are firmly connected with the milling opening 210, the problem of loosening like sticking does not exist.
In the embodiments provided in the present application, it should be understood that the disclosed systems and apparatuses may be implemented in other manners. The above-described embodiments are merely illustrative, for example, the division of the mechanism is merely a logical function division, and there may be additional divisions in actual implementation, and for example, multiple units or components may be combined or integrated into another system, or some features may be omitted, or not performed.
In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.
With the above description of the preferred embodiments according to the present invention as a teaching, a person skilled in the art can make various changes and modifications without departing from the scope of the technical idea of the present invention. The technical scope of the present invention is not limited to the description, but must be determined according to the scope of claims.
Claims (10)
1. A power cell all-insulation spray system, comprising:
a pre-spraying mechanism (100) which is suitable for spraying insulating paint on the surface of the milling opening aluminum shell (200) outside the milling opening (210) and the surface of the bending piece (300) matched with the milling opening (210) so as to form insulating layers respectively;
a multi-fold angle sheet assembly mechanism (400) adapted to insert a multi-fold angle sheet (500) into the fold angle sheet (300);
the full insulation forming mechanism (600) is suitable for receiving the bending piece (300) inserted with the multi-angle piece (500), after the cover plate (700) is covered with the milling opening (210), the bending piece (300) inserted with the multi-angle piece (500) is turned over, so that the welding end (510) of the multi-angle piece (500) is abutted in a welding groove (800) formed by the cover plate (700) and the milling opening (210), the bending piece (300) is positioned above the welding groove (800) to avoid welding laser, the welding end (510), the cover plate (700) and the milling opening (210) are continuously turned over after welding, the multi-angle piece (500) is folded and compacted, the bending piece (300) is fixed and covered on the milling opening (210), and an insulating layer of the bending piece (300) is connected with an insulating layer outside the milling opening (210).
2. The power cell all-insulation spray system of claim 1 wherein,
the all-insulation forming mechanism (600) includes:
a milling-mouth aluminum shell accommodating seat (610) which is provided with an aluminum shell accommodating groove (611) matched with the milling-mouth aluminum shell (200);
a plurality of overturning driving components (620) which are arranged on the milling aluminum shell accommodating seat (610) along the notch of the aluminum shell accommodating groove (611);
and the bending piece overturning plate (630) is driven by the overturning driving component (620) and is inclined downwards when rotating to the receiving position, so that the received bending piece (300) inserted with the multi-bending piece (500) slides onto the sucking disc (631) of the bending piece overturning plate (630) to be sucked.
3. The power cell all-insulation spray system of claim 2 wherein,
the multi-folded corner piece (500) comprises:
when the welding end (510) is abutted in a welding groove (800) formed by the cover plate (700) and the milling opening (210), a plurality of outward folded sections (520) facing the outside of the milling opening aluminum shell (200) and a plurality of inward folded sections (530) facing the inside of the milling opening aluminum shell (200);
the bottom of the multi-folded corner piece (500) is an outer folded section (520), so that the rest inner folded sections (530) and outer folded sections (520) in the multi-folded corner piece (500) and the folded piece (300) are positioned obliquely above the welding groove (800) and avoid welding laser.
4. The power cell all-insulation spray system of claim 3 wherein,
the bending piece (300) comprises:
a milling-mouth-side cover section (310) and a milling-mouth upper cover section (320);
the bottom surface of the milling opening upper covering section (320) is provided with a folding accommodating through groove (321);
the side surface of the milling opening upper covering section (320) is provided with a bent angle piece inserting curved through hole (322), the bent angle piece inserting curved through hole (322) is communicated with the bottom of the folding accommodating through groove (321) so as to form a pressing part (323) between the bent angle piece inserting curved through hole (322) and the bottom of the folding accommodating through groove (321);
the top of the multi-fold angle piece (500) is connected with a plug-in arc section (540), which is matched with the bent through hole (322) for plugging the multi-fold angle piece, and the orientation of the plug-in arc section (540) is opposite to the orientation of the outer fold section (520) or the inner fold section (530) at the top of the multi-fold angle piece (500) so as to form an initial fold angle (550).
5. The power cell all-insulation spray system of claim 4 wherein,
the length of the outward folding section (520) and the length of the inward folding section (530) are smaller than the horizontal distance from the welding groove (800) to the side wall of the milling opening (210), so that the outward folding section (520) and the inward folding section (530) are positioned in the region of the milling opening (210) after being folded and compacted;
the folding accommodating through groove (321) is matched with the outer folding section (520) and the inner folding section (530) so as to accommodate the gradually folded outer folding section (520) and the inner folding section (530) when the corresponding overturning driving assembly (620) continuously overturns the bending piece overturning plate (630) after the welding end (510), the cover plate (700) and the milling opening (210) of the multi-folding angle piece (500) are welded by welding laser until the outer folding section (520) and the inner folding section (530) are compacted, the milling opening side covering section (310) is fixed and covers the side wall of the milling opening (210), and the milling opening upper covering section (320) is fixed and covers the opening surface of the milling opening (210).
6. The power cell all-insulation spray system of claim 5 wherein,
bending pieces (300) positioned at four corners of a notch of the aluminum shell accommodating groove (611) are provided with adjacent bending piece covering notches (330) so that the bending pieces (300) are fixed and are covered on the milling opening (210) and then mutually abutted.
7. The power cell all-insulation spray system of claim 6 wherein,
the pre-spray mechanism (100) comprises:
a spraying turntable (110) on which a spraying placement plate (120) is provided;
and a nozzle (130) provided on the side surface of the painting turn table (110) and facing the painting placement plate (120).
8. The power cell all-insulation spray system of claim 7 wherein,
the pre-spray mechanism (100) further comprises:
and a spraying sheath (140) which is matched with the milling opening (210) of the milling opening aluminum shell (200) and is suitable for shielding the milling opening (210) when the milling opening aluminum shell (200) is sprayed.
9. The power cell all-insulation spray system of claim 6 wherein,
the multi-fold angle sheet assembling mechanism (400) includes:
the assembly base (410) is provided with a bending piece limiting groove (411);
the multi-angle piece limiting table (420) is arranged on the assembly base (410) and faces the bending piece limiting groove (411), and the table top is provided with the multi-angle piece limiting groove (421) so that the inserting arc section (540) of the multi-angle piece (500) placed in the multi-angle piece limiting groove (421) is aligned with the angle piece inserting curved through hole (322) of the bending piece (300) placed in the bending piece limiting groove (411);
the pressing push rod (430) is arranged on one side of the bending piece limiting groove (411), a pressing block (431) matched with the pressing part (323) is arranged at the pushing end, so that the pressing push rod is pushed out after the inserting arc section (540) is inserted into the bent through hole (322) of the bending piece, the pressing part (323) is pressed by the pressing block (431), and the inserting arc section (540) is hooped.
10. The full-insulation spraying method for the power battery is characterized by comprising the following steps of:
the power cell all-insulation spray system of any one of claims 1 to 9;
an insulating coating is sprayed on the surface of the milling opening aluminum shell (200) outside the milling opening (210) and the surface of the bending piece (300) matched with the milling opening (210) through a pre-spraying mechanism (100) to form insulating layers respectively;
inserting the multi-folded corner piece (500) into the folded corner piece (300) through the multi-folded corner piece assembling mechanism (400);
the bending piece (300) inserted with the multi-angle piece (500) is received through the all-insulation forming mechanism (600), after the cover plate (700) is covered with the milling opening (210), the bending piece (300) inserted with the multi-angle piece (500) is turned over, so that the welding end (510) of the multi-angle piece (500) is abutted in a welding groove (800) formed by the cover plate (700) and the milling opening (210), the bending piece (300) is positioned above the welding groove (800) to avoid welding laser, the welding end (510), the cover plate (700) and the milling opening (210) are continuously turned over after welding, the multi-angle piece (500) is folded and compacted, the bending piece (300) is fixed and covered on the milling opening (210), and an insulating layer of the bending piece (300) is connected with an insulating layer outside the milling opening (210).
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