CN111515492A - Welding process for bus bar of lead-acid storage battery - Google Patents
Welding process for bus bar of lead-acid storage battery Download PDFInfo
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- CN111515492A CN111515492A CN202010263289.1A CN202010263289A CN111515492A CN 111515492 A CN111515492 A CN 111515492A CN 202010263289 A CN202010263289 A CN 202010263289A CN 111515492 A CN111515492 A CN 111515492A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/0026—Arc welding or cutting specially adapted for particular articles or work
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/095—Monitoring or automatic control of welding parameters
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/12—Automatic feeding or moving of electrodes or work for spot or seam welding or cutting
- B23K9/133—Means for feeding electrodes, e.g. drums, rolls, motors
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/32—Accessories
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- Connection Of Batteries Or Terminals (AREA)
Abstract
The invention provides a welding process of a lead-acid storage battery busbar, which specifically comprises the following steps: the battery enters a welding station, the first welding cavity die and the second welding cavity die are clamped and inserted into a tab space of the battery, the middle pressing strip is pressed downwards, the middle pressing strip is positioned between the first welding cavity die and the second welding cavity die, and a welding cavity is formed by the middle pressing strip and the first welding cavity die and the second welding cavity die; moving the welding gun and the wire feeding mechanism to the position above the lug of the battery to be welded, adjusting the distance, and setting process parameters before welding; discharging by a welding gun with large current, and rapidly melting the welding wire and the upper end of a lug of the battery; the first welding cavity die and the second welding cavity die move in opposite directions, the middle pressing bar moves upwards to realize battery demoulding, the welded battery is switched to the next procedure, and the welding station prepares for welding the next battery; repeating the above processes, and repeating the steps in the above way to realize the welding of the battery. The welding process for the battery bus bar can save people, labor and materials, and can reduce consumption and efficiency, reduce cost and improve quality.
Description
[ technical field ] A method for producing a semiconductor device
The invention relates to the technical field of battery welding, in particular to a welding process of a bus bar of a lead-acid storage battery.
[ background of the invention ]
The welding of the lead-acid storage battery, in particular to the welding of a bus bar of the lead-acid storage battery for the electric vehicle, refers to a process of realizing the welding of the bus bar into a whole by melting and then connecting a positive plate in a battery plate group and a negative plate of an adjacent battery unit grid in series. The manual welding is firstly adopted, the electrode lugs of the pole pieces are melted after gas is selected for high-temperature combustion, welding flux is added, and then cooling forming is carried out to realize the welding of the bus bar. With the improvement of automation level, the cast welding method is generally adopted in the market at present, and the welding of the battery busbar is realized by matching with an automatic or semi-automatic welding machine. The cast-weld method is that the alloy lead is heated and melted into liquid state in a lead pot, the liquid lead is added into a welding mold cavity, then the battery is placed upside down, the pole ear is inserted into the lead liquid mold cavity downwards, so that the pole pieces are melted into a whole, and the welding of the busbar is realized.
The manual gas welding described above has drawbacks in that: the labor intensity is high, the welding environment is poor, and the physical health of operators is not facilitated. The welding quality consistency is poor, and the battery quality controllability is poor. The automatic or semi-automatic cast welding has the same defect of high labor intensity, and simultaneously, the energy consumption is higher and the welding cost is higher because the lead liquid is heated by heat preservation all the time. The welding environment can not be relatively isolated, lead dust pollution is large, and the health of operators is affected.
[ summary of the invention ]
The invention aims to solve the problems in the prior art, and provides a welding process for a bus bar of a lead-acid storage battery, which can save people, labor and materials, reduce consumption and efficiency, reduce cost and improve quality.
In order to achieve the purpose, the invention provides a welding process of a lead-acid storage battery busbar, which specifically comprises the following steps:
step S1, die assembly: the battery enters a welding station, the first welding cavity die and the second welding cavity die are clamped and inserted into a tab space of the battery, the middle pressing strip is pressed downwards, the middle pressing strip is positioned between the first welding cavity die and the second welding cavity die, and a welding cavity is formed by the middle pressing strip and the first welding cavity die and the second welding cavity die;
s2, welding preparation: the welding gun and the wire feeding mechanism are moved to the position above the lug of the battery to be welded, the distance can be adjusted according to the process requirement, and process parameter setting is needed before welding;
s3, welding: discharging by a welding gun with large current, rapidly melting the welding wire and the upper ends of the electrode lugs of the battery, welding one row of electrode lugs on one side of the battery, moving the welding gun to a welding station on the other side of the battery, and welding the other row of electrode lugs;
s4, demolding: the first welding cavity die and the second welding cavity die respectively move away from each other in two opposite directions, the middle pressing bar moves upwards to realize battery demoulding, the welded battery is switched to the next procedure, and the welding station prepares for welding of the next battery;
and S5, repeating the process, and repeating the process in such a reciprocating way to realize battery welding.
Preferably, in step S1, the battery at the welding station is in an upright state with the tab facing upward, and when the middle pressing bar, the first welding cavity die and the second welding cavity die form a welding cavity, the tab is higher than the upper plane of the welding cavity.
Preferably, in step S2, the setting of welding process parameters is performed before welding, and the welding process parameters include: the welding gun position comprises welding gun moving speed, welding gun static position and welding gun static time, wherein the welding gun moving speed is 2-5mm/s, and the welding gun static time is 0.5-1 s; the wire feeding speed comprises a wire feeding position and wire feeding time, the distance between the wire feeding position and a gun mouth of the welding gun is 2-5mm, and the wire feeding time is 0.5-1 s; the heating parameters comprise the welding current and the on-off time of a welding gun, the welding current of the welding gun is 30-60A, and the on-off time is 1-2s of power-on, 0.5-1s of power-off or continuous power-on welding.
Preferably, in the step S2, the welding gun and the wire feeding mechanism move to a position above the tab of the position of the binding post to be welded, and the distance is 2-5 mm.
Preferably, the tabs of the battery at the welding station in step S3 are arranged at intervals, and the welding gun performs intermittent discharge welding according to the welding process requirement during welding, so that the welding quality is more reliable.
Preferably, the welding wire used for welding in step S3 is a lead alloy wire, and the lead alloy wire and the tab are rapidly heated by a large current discharge action of the welding gun, so that the lead alloy wire and the upper end of the tab are fused together to form the busbar.
Preferably, the welding process adopts a special welding machine to weld the battery bus bar, and the special welding machine comprises: base, frame, welder moving mechanism, elevating system, wire feeding mechanism, welder, material area runner and welding mould, install frame and welding mould on the base, welder moving mechanism is installed at the top of frame, but be equipped with longitudinal movement's vertical slip table on the welder moving mechanism, but be equipped with lateral shifting's horizontal slip table on the vertical slip table, install elevating system on the horizontal slip table, install wire feeding mechanism and welder on elevating system's the crane, the material area runner that is used for supplying with the welding wire for wire feeding mechanism is installed to frame one side, wire feeding mechanism is used for the automatic welding wire that sends, be equipped with welding mould under welder.
Preferably, the welding mould comprises a first welding cavity mould, a second welding cavity mould and a middle pressing strip, cavity grooves of the first welding cavity mould and the second welding cavity mould are respectively composed of a plurality of tooth-shaped strips, the tooth-shaped strips are inserted into a pole ear neutral position of the battery during working, and the welding cavity is formed after the middle pressing strip is folded.
The invention has the beneficial effects that: the process adopted by the invention has high production efficiency, can realize the flow automatic operation, has relatively independent operation space and small occupied space, can realize the unmanned automatic welding and greatly reduces the labor cost. The operator only needs to monitor the welding process and can be far away from the operation area, the labor intensity is greatly reduced, and the physical health of the operator is also guaranteed. The unique discharge heating mode is adopted, the heating efficiency is high, and the energy consumption is greatly reduced. The welding material uses the materials of the parts of the lugs which are higher, thereby greatly reducing the material consumption. The comprehensive realization of saving people, labor and materials, reducing consumption, improving efficiency, reducing cost and improving quality.
The features and advantages of the present invention will be described in detail by embodiments in conjunction with the accompanying drawings.
[ description of the drawings ]
FIG. 1 is a schematic diagram of a dedicated welder used in the present invention;
FIG. 2 is a schematic top view of a specialized welding machine employed in the present invention;
FIG. 3 is a schematic front view of a dedicated welder for use with the present invention;
FIG. 4 is a schematic diagram of a dedicated welding machine used in the present invention;
FIG. 5 is an enlarged schematic view at A of FIG. 4;
FIG. 6 is an enlarged schematic view at B of FIG. 4;
FIG. 7 is a schematic top view of a specialized welding machine employed in the present invention;
fig. 8 is a state of the battery before welding;
fig. 9 is a state of the battery after welding.
[ detailed description ] embodiments
Referring to fig. 1 to 9, the invention relates to a welding process for a bus bar of a lead-acid storage battery, which specifically comprises the following steps:
step S1, die assembly: the battery enters a welding station, and at the moment, the battery 10 is in an upright state, and the electrode lug of the battery is upward; the first welding cavity die 82 and the second welding cavity die 83 are matched and inserted into the space of the tab 100 of the battery 10, the middle pressure bar 84 is pressed downwards, the middle pressure bar 84 is positioned between the first welding cavity die 82 and the second welding cavity die 83, a welding cavity is formed by the middle pressure bar 84 and the first welding cavity die 82 and the second welding cavity die 83, and at the moment, the height of the tab 100 is higher than the upper plane of the welding cavity;
s2, welding preparation: moving a welding gun 6 and a wire feeding mechanism 5 to the position above a pole lug 100 of a battery 10 to be welded, wherein the distance between a gun opening of the welding gun 6 and the pole lug is 2-5mm, and process parameter setting is required before welding; the welding process parameters comprise: the welding gun position comprises welding gun moving speed, welding gun static position and welding gun static time, wherein the welding gun moving speed is 2-5mm/s, and the welding gun static time is 0.5-1 s; the wire feeding speed comprises a wire feeding position and wire feeding time, the distance between the wire feeding position and a gun mouth of the welding gun is 2-5mm, and the wire feeding time is 0.5-1 s; the heating parameters comprise the welding current and the on-off time of a welding gun, the welding current of the welding gun is 30-60A, and the on-off time is 1-2s of power-on, 0.5-1s of power-off or continuous power-on welding.
S3, welding: discharging by a large current of the welding gun 6, rapidly melting the welding wire and the upper ends of the electrode lugs 100 of the battery, welding one row of electrode lugs 100 on one side of the battery 10, moving the welding gun 6 to a welding station on the other side of the battery 10, and welding the other row of electrode lugs 100;
s4, demolding: the first welding cavity die 82 and the second welding cavity die 83 respectively move away from each other in two opposite directions, the middle pressing bar 84 moves upwards to realize the demoulding of the battery 10, the welded battery 10 is transferred to the next procedure, and the welding station prepares for the welding of the next battery;
and S5, repeating the process, and repeating the process in such a reciprocating way to realize battery welding.
Furthermore, the tabs 100 of the battery at the welding station in the step S3 are arranged at intervals, and the welding quality is more reliable because the welding gun 6 adopts intermittent discharge welding according to the welding process requirement; moreover, the heating efficiency is high, and the energy consumption is greatly reduced. Of course, continuous welding can also be adopted on the premise of ensuring the quality.
Furthermore, the welding wire used for welding in step S3 is a lead alloy wire, and the lead alloy wire and the tab 100 are rapidly heated by the action of large current discharge generated by the welding gun 6, so that the lead alloy wire and the upper end of the tab 100 are fused into a whole to form a busbar.
Referring to fig. 1 to 7, the welding process uses a special welding machine to weld the battery bus bar, and specifically, the special welding machine includes: base 1, frame 2, welder moving mechanism 3, elevating system 4, wire feeder 5, welder 6, material area runner 7 and welding mould 8, install frame 2 and welding mould 8 on the base 1, welder moving mechanism 3 is installed at the top of frame 2, but be equipped with longitudinal movement's vertical slip table 31 on the welder moving mechanism 3, but be equipped with lateral shifting's horizontal slip table 32 on the vertical slip table 31, install elevating system 4 on the horizontal slip table 32, install wire feeder 5 and welder 6 on elevating system 4's the crane 41, the material area runner 7 that is used for supplying with the welding wire for wire feeder 5 is installed to frame 2 one side, wire feeder 5 is used for the automatic welding wire that send, be equipped with welding mould 8 under welder 6. The welding mold 8 comprises a first welding cavity mold 82, a second welding cavity mold 83 and a middle pressing strip 84, wherein cavity grooves of the first welding cavity mold 82 and the second welding cavity mold 83 are respectively composed of a plurality of tooth-shaped strips, the tooth-shaped strips are inserted into a tab 100 neutral position of the battery 10 during working, and the middle pressing strip 84 is folded to form a welding cavity. The middle pressure bar 84 can also be driven and controlled by an auxiliary lifting mechanism to realize the descending and ascending actions of mold closing and mold releasing.
Further, the below of frame 2 is installed on base 1 through a plurality of support frame 21, the top of frame 2 is equipped with the longitudinal rail 22 that supplies vertical slip table 31 to walk, the outside of frame 2 is equipped with the installation frame 23 that is the U font, material area runner 7 is fixed in the one end of installation frame 23, one side of installation frame 23 is installed and is driven actuating cylinder 24, connecting seat 312 that links to each other with the telescopic link that drives actuating cylinder 24 is installed to the lateral wall of vertical slip table 31.
Further, be equipped with the horizontal guide rail 311 that supplies horizontal slip table 32 to walk on the vertical slip table 31, one side of vertical slip table 31 is equipped with the motor mount pad, install servo motor 33 on the motor mount pad, servo motor 33 passes through ball drive horizontal slip table 32 and removes.
Further, elevating system 4's crane 41 is by the direction removal about the lift cylinder drive, the lift cylinder is installed on horizontal slip table 32, and not shown in this lift cylinder figure, a plurality of direction slide bar 411 is installed to crane 41's top, crane 41's below is equipped with first mounting bracket 42, set up a plurality of on the first mounting bracket 42 and be used for fixed wire feeder 5's first regulation mounting groove 421, wire feeder 5's one side is installed and is used for fixed welder 6's second regulation mounting groove 52, first regulation mounting groove 421, second regulation mounting groove 52 are the arc wall.
Further, referring to fig. 4 to 9, the welding mold 8 further includes a workbench 81, a plurality of support columns 812 are installed at the bottom of the workbench 81, two auxiliary guide rails 811 are symmetrically disposed on the workbench 81, the first welding cavity mold 82 and the second welding cavity mold 83 can move close to or away from each other along the length direction of the auxiliary guide rails 811, a positioning central cavity 813 through which the battery 10 can penetrate is disposed at the middle of the workbench 81, a first cavity group 820 is disposed on a side wall of the first welding cavity mold 82 facing the second welding cavity mold 83, the first cavity group 820 is composed of a plurality of first cavity grooves 8201 having openings, a second cavity group 830 is disposed on a side wall of the second welding cavity mold 83 facing the first welding cavity mold 82, the second cavity group 830 is composed of a plurality of second cavity grooves 8301 having openings, the first cavity grooves 8201, the second cavity grooves 8301, The second cavity grooves 8301 are arranged in an intersecting and staggered manner, a plurality of tooth-shaped strips 85 are respectively arranged in the first cavity groove 8201 and the second cavity groove 8301, a tooth inserting groove 850 for the tab 100 of the battery 10 to penetrate out is arranged between the adjacent tooth-shaped strips 85, the middle pressing strip 84 can be installed between the first welding cavity die 82 and the second welding cavity die 83 after die assembly, two side walls of the middle pressing strip 84 are respectively abutted against the end parts of the tooth-shaped strips 85 in the first cavity groove 8201 and the second cavity groove 8301, and the openings of the first cavity groove 8201 and the second cavity groove 8301 are blocked to form a plurality of closed welding cavity.
Further, a first supporting plate 821 and a second supporting plate 831 for supporting the middle pressing strip 84 are respectively arranged on the first welding cavity die 82 and the second welding cavity die 83, supporting side plates 841 are symmetrically arranged on two sides of the middle pressing strip 84, and side walls of the supporting side plates 841 are respectively used for plugging openings of the first cavity groove 8201 and the second cavity groove 8301.
Further, the first cavity group 820 is composed of a plurality of first cavity grooves 8201 including two short grooves and two first long grooves corresponding to the battery cells on one side of the battery 10, and the second cavity group 830 is composed of a plurality of second cavity grooves 8301 including three second long grooves corresponding to the battery cells on the other side of the battery 10.
Further, a first slide 822 capable of moving along the auxiliary guide rail 811 is symmetrically disposed at two ends of the bottom of the first welding cavity 82, and a second slide 832 capable of moving along the auxiliary guide rail 811 is symmetrically disposed at two ends of the bottom of the second welding cavity 83.
The invention relates to a welding process of a lead-acid storage battery bus bar, wherein a battery is in an upright state during welding, a lug faces upwards, cavity grooves of a first welding cavity die and a second welding cavity die are composed of a plurality of tooth-shaped strips, and the tooth-shaped strips are inserted into neutral positions of the lug of the battery during working and are folded with welding medium-pressure strips to form a welding cavity. The wire feeder realizes automatic wire feeding, the lead alloy wire meeting the battery process requirements is selected, the lead alloy wire and the lug are rapidly heated under the action of heavy current discharge generated by the welding gun, and the lead alloy wire and the upper end of the lug are fused into a whole to form a bus bar. During welding, the transverse sliding table controls transverse movement to weld one row of lugs firstly, then the longitudinal sliding table controls a welding gun to move to the welding station of the other row of lugs, the transverse sliding table controls transverse movement again to weld the second row of lugs, and welding operation of the two rows of busbars is completed. After the welding of the bus bar is completed, the first welding cavity die and the second welding cavity die move towards two sides respectively, the middle pressure bar moves upwards, and the battery demoulding can be realized.
The above embodiments are illustrative of the present invention, and are not intended to limit the present invention, and any simple modifications of the present invention are within the scope of the present invention.
Claims (8)
1. A welding process for a lead-acid storage battery busbar is characterized by comprising the following steps: the method specifically comprises the following steps:
step S1, die assembly: the battery enters a welding station, a first welding cavity die (82) and a second welding cavity die (83) are matched and inserted into a space of a tab (100) of the battery (10), a middle pressing bar (84) is pressed downwards, the middle pressing bar (84) is positioned between the first welding cavity die (82) and the second welding cavity die (83), and a welding cavity is formed between the first welding cavity die and the second welding cavity die;
s2, welding preparation: moving a welding gun (6) and a wire feeding mechanism (5) to the position above a tab (100) of a battery (10) to be welded, and setting process parameters before welding;
s3, welding: discharging by a welding gun (6) with high current, rapidly melting the welding wire and the upper ends of the electrode lugs (100) of the battery, welding one row of electrode lugs (100) on one side of the battery (10) firstly, then moving the welding gun (6) to a welding station on the other side of the battery (10), and welding the other row of electrode lugs (100);
s4, demolding: the first welding cavity die (82) and the second welding cavity die (83) move away from each other in two opposite directions, the middle pressing bar (84) moves upwards to realize the demolding of the battery (10), the battery (10) is transferred to the next procedure after welding, and a welding station prepares for the welding of the next battery;
and S5, repeating the process, and repeating the process in such a reciprocating way to realize battery welding.
2. The welding process of the lead-acid storage battery bus bar of claim 1, characterized in that: in the step S1, the battery (10) at the welding station is in an upright state, the tab of the battery faces upwards, and when the middle pressing bar (84), the first welding cavity die (82) and the second welding cavity die (83) form a welding cavity, the tab (100) is higher than the upper plane of the welding cavity.
3. The welding process of the lead-acid storage battery bus bar of claim 1, characterized in that: setting welding process parameters before welding in the step S2, wherein the welding process parameters comprise: the welding gun position comprises welding gun moving speed, welding gun static position and welding gun static time, wherein the welding gun moving speed is 2-5mm/s, and the welding gun static time is 0.5-1 s; the wire feeding speed comprises a wire feeding position and wire feeding time, the distance between the wire feeding position and a gun mouth of the welding gun is 2-5mm, and the wire feeding time is 0.5-1 s; the heating parameters comprise the welding current and the on-off time of a welding gun, the welding current of the welding gun is 30-60A, and the on-off time is 1-2s of power-on, 0.5-1s of power-off or continuous power-on welding.
4. The welding process of the lead-acid storage battery bus bar of claim 1, characterized in that: in the step S2, the welding gun (6) and the wire feeding mechanism (5) are moved to the position above the tab (100) of the battery (10) to be welded, and the distance between the muzzle of the welding gun (6) and the tab is 2-5 mm.
5. The welding process of the lead-acid storage battery bus bar of claim 1, characterized in that: the lugs (100) of the battery at the welding station in the step S3 are arranged at intervals, and the welding gun (6) adopts intermittent discharge welding according to the requirements of the welding process during welding.
6. The welding process of the lead-acid storage battery bus bar of claim 1, characterized in that: the welding wire adopted in the step S3 is a lead alloy wire, the lead alloy wire and the tab (100) are rapidly heated under the action of large-current discharge generated by the welding gun (6), and the lead alloy wire and the upper end of the tab (100) are fused into a whole to form the busbar.
7. The welding process of the lead-acid storage battery bus bar of claim 1, characterized in that: this welding process adopts special welding machine to carry out the welding of battery busbar, special welding machine includes: base (1), frame (2), welder moving mechanism (3), elevating system (4), wire feeder (5), welder (6), material area runner (7) and welding mould (8), install frame (2) and welding mould (8) on base (1), welder moving mechanism (3) is installed at the top of frame (2), but be equipped with longitudinal movement's vertical slip table (31) on welder moving mechanism (3), but be equipped with lateral shifting's horizontal slip table (32) on vertical slip table (31), install elevating system (4) on horizontal slip table (32), install wire feeder (5) and welder (6) on elevating system (4)'s (41), frame (2) one side is installed and is used for carrying material area runner (7) of welding wire for wire feeder (5), wire feeder (5) are used for sending the welding wire automatically, and a welding mould (8) is arranged under the welding gun (6).
8. The welding process of a lead-acid battery busbar of claim 7, wherein: the welding mould (8) comprises a first welding cavity mould (82), a second welding cavity mould (83) and a middle pressing strip (84), wherein cavity grooves of the first welding cavity mould (82) and the second welding cavity mould (83) are respectively composed of a plurality of tooth-shaped strips, the tooth-shaped strips are inserted into neutral positions of tabs (100) of the battery (10) during working, and the middle pressing strip (84) is folded to form a welding cavity.
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| CN202010263289.1A CN111515492A (en) | 2020-04-07 | 2020-04-07 | Welding process for bus bar of lead-acid storage battery |
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| CN110202287A (en) * | 2019-06-20 | 2019-09-06 | 浙江奥为新能源有限公司 | A kind of welding battery process |
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Application publication date: 20200811 |