A kind of battery core nickel sheet welding equipment

Abstract

The present invention relates to a battery core nickel sheet welding device, which is used to weld the nickel sheet on the battery core, including a spot welding jig for loading the battery core to be processed, a spot welding wire body for transporting the spot welding jig, a spot welding assembly arranged beside the spot welding wire body and welding the nickel sheet to the battery core to be processed, a finished product unloading mechanism, and a reflow mechanism for reflowing the spot welding jig, wherein the spot welding jig includes a jig body, a left hinge detachably connected to the jig body, and a right hinge detachably connected to the jig body, and a plurality of battery cores to be processed are arranged side by side on the upper surface of the jig body, and the left hinge and the right hinge are respectively clamped on both sides of the battery core to be processed. The present invention provides a battery core nickel sheet welding device, wherein the reflow process of the spot welding jig is orderly and smooth, and the way in which the spot welding jig after reflow positions and fixes the battery core is convenient and efficient, and the battery core can be fixed by placing the battery core on the upper surface of the jig body and then installing the hinge, and the degree of automation is high, and the battery core nickel sheet welding is efficient and reliable.

Description

Technical Field

[0001] The invention relates to the field of welding equipment, in particular to a welding equipment for a nickel sheet of a battery core. Background Art

[0002] The spot welding machine adopts the principle of double-sided double-point overcurrent welding. When working, the two electrodes pressurize the workpiece so that the two layers of metal form a certain contact resistance under the pressure of the two electrodes. When the welding current flows from one electrode to the other, an instantaneous thermal weld is formed at the two contact resistance points, and the welding current instantly flows from the other electrode along the two workpieces to this electrode to form a loop, and will not damage the internal structure of the workpiece being welded.

[0003] Current electronic products are of various types and developing rapidly. For example, new energy vehicles, electric bicycles, electric lawn mowers and other electrical appliances require different power, which requires different numbers of cells (single lithium battery) and different series and parallel connection methods between cells to achieve the required power parameters. At present, lithium battery welding is mainly divided into resistance welding and laser welding. Among them, resistance welding has developed rapidly due to its advantages of low equipment cost and simple operation.

[0004] In actual production, manual spot welding has low efficiency, poor consistency, and high labor intensity. Protective equipment such as goggles are required during work, and the working environment poses a hazard to personal safety. Therefore, it is imperative to use highly automated automatic spot welding machines to replace manual spot welding. There are already many three-axis spot welding machines on the market, but they still cannot meet customer needs in terms of efficiency and yield. Summary of the invention

[0005] In view of this, the present invention provides a battery core nickel sheet welding device, in which a spot welding jig is split into a jig body and a hinge and then reflowed. The reflow process of the spot welding jig is orderly and smooth, and the spot welding jig after reflow positions and fixes the battery core in a convenient and efficient manner. The battery core is placed on the upper surface of the jig body and then the hinge is installed to complete the fixation of the battery core. The device has a high degree of automation, and the battery core nickel sheet welding is efficient and reliable.

[0006] The purpose of the present invention is achieved through the following technical solutions:

[0007] A battery core nickel sheet welding device is used to weld the nickel sheet to the battery core, comprising a spot welding jig for loading the battery core to be processed, a spot welding wire body for transporting the spot welding jig, a spot welding assembly arranged beside the spot welding wire body and welding the nickel sheet to the battery core to be processed, a finished product unloading mechanism, and a reflow mechanism for reflowing the spot welding jig, wherein the spot welding jig comprises a jig body, a left hinge detachably connected to the jig body, and a right hinge detachably connected to the jig body, a plurality of battery cores to be processed are arranged side by side on the upper surface of the jig body, the left hinge and the right hinge are respectively clamped on both sides of the battery core to be processed, and the reflow mechanism comprises a jig body reflow mechanism for reflowing the jig body, and a hinge reflow mechanism for reflowing the left hinge and the right hinge.

[0008] Preferably, the spot welding wire body includes a spot welding wire frame body, a first conveyor belt arranged on the spot welding wire frame body and used to transport the spot welding jig, a first power source driving the first conveyor belt to rotate, and a first lifting mechanism, a second lifting mechanism, a third lifting mechanism and a fourth lifting mechanism for pushing the spot welding jig away from the conveyor belt.

[0009] Preferably, the first lifting mechanism includes a lifting bracket, a lifting cylinder installed on the lifting bracket, and a lifting plate driven by a lifting cylinder push rod, and the second lifting mechanism, the third lifting mechanism, and the fourth lifting mechanism have the same composition structure as the second lifting mechanism.

[0010] Preferably, the spot welding assembly includes a four-axis manipulator and a spot welder clamped by the four-axis manipulator, and the four-axis manipulator specifically includes an X moving axis, a Y moving axis, a Z moving axis, and an R moving axis.

[0011] Preferably, the spot welding assembly is arranged next to the second lifting mechanism, and an upper positioning plate is arranged above the second lifting mechanism; the second lifting mechanism lifts the spot welding jig, and when the upper surface of the spot welding jig contacts the lower surface of the upper positioning plate, the spot welding jig is clamped and fixed by the second lifting mechanism and the upper positioning plate, and the spot welding assembly can perform nickel sheet welding on the battery cell in the spot welding jig.

[0012] Preferably, the finished product unloading mechanism includes a finished product assembly line, a battery cell clamp for clamping the battery cell, and a unloading robot for driving the battery cell clamp to move; the jig body reflux mechanism includes a jig body reflux line, a second conveyor belt arranged on the jig body reflux line and used to transport the jig body, a second power source for driving the second conveyor belt to rotate, and a jig body clamp for clamping the jig body, and the jig body clamp is driven to move by the unloading robot.

[0013] Preferably, the hinge reflux mechanism includes a left-opening hinge mechanism for removing the left hinge, a left hinge transfer mechanism for clamping the left hinge, a left hinge flipping mechanism for flipping the left hinge, and a left hinge reflux line for recirculating the left hinge, and a right-opening hinge mechanism for removing the right hinge, a right hinge transfer mechanism for clamping the right hinge, a right hinge flipping mechanism for flipping the right hinge, and a right hinge reflux line for recirculating the right hinge, which are arranged in sequence.

[0014] Preferably, the left opening and hinge mechanism includes a left hinge jaw, a left hinge jaw cylinder that drives the left hinge jaw to open and close, and a left hinge jaw moving cylinder that drives the left hinge jaw to move; and the right opening and hinge mechanism includes a right hinge jaw, a right hinge jaw cylinder that drives the right hinge jaw to open and close, and a right hinge jaw moving cylinder that drives the right hinge jaw to move.

[0015] Preferably, the left hinge transfer mechanism includes a left hinge clamping head, a left hinge clamping head cylinder that drives the left hinge clamping head to open and close, and a left hinge clamping head displacement cylinder that drives the left hinge clamping head to move; and the right hinge transfer mechanism includes a right hinge clamping head, a right hinge clamping head cylinder that drives the right hinge clamping head to open and close, and a right hinge clamping head displacement cylinder that drives the right hinge clamping head to move.

[0016] Preferably, the left hinge flipping mechanism includes a left hinge clamping head, a left hinge clamping head cylinder that drives the left hinge clamping head to open and close, and a first rotating cylinder that drives the left hinge clamping head to rotate; and the right hinge flipping mechanism includes a right hinge clamping head, a right hinge clamping head cylinder that drives the right hinge clamping head to open and close, and a second rotating cylinder that drives the right hinge clamping head to rotate.

[0017] Preferably, the left hinge return streamline is provided with a third conveyor belt for conveying the left hinge and a third power source for driving the third conveyor belt to rotate, and the right hinge return streamline is provided with a fourth conveyor belt for conveying the right hinge and a fourth power source for driving the fourth conveyor belt to rotate.

[0018] The beneficial effects of the present invention compared with the prior art are:

[0019] The battery core nickel sheet welding equipment of the present invention realizes the automation of nickel sheet spot welding, automatic nickel sheet loading, hinge reflow, fixture reflow, and product unloading. The spot welding fixture is split into a fixture body and a hinge for reflow, and the reflow process of the spot welding fixture is orderly and smooth. The spot welding fixture after reflow is convenient and efficient in positioning and fixing the battery core. The battery core is placed on the upper surface of the fixture body and then the hinge is installed to complete the fixation of the battery core. The automation is high, and the battery core nickel sheet welding is efficient and reliable.

[0020] The advantages of this equipment are as follows: 1. Good applicability, similar battery packs can use this structure to achieve automated production; 2. Can effectively improve product quality, through equipment spot welding, can improve product consistency and improve production efficiency; 3. The equipment structure is compact, using line reflux to effectively use space; the equipment can be connected to a fully automatic production line, and can also be spliced ​​with manual lines for semi-automatic operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural diagram of a battery core nickel sheet welding device in one embodiment of the present invention.

[0022] Figure 2 1 is a structural diagram of a spot welding jig in one embodiment of the present invention.

[0023] Figure 3 1 is a structural diagram of a spot welding wire body in one embodiment of the present invention.

[0024] Figure 4 1 is a structural diagram of a spot welding assembly in one embodiment of the present invention.

[0025] Figure 5 It is a structural diagram of the finished product unloading mechanism in one embodiment of the present invention.

[0026] Figure 6 1 is a structural diagram of a fixture body reflow mechanism in one embodiment of the present invention.

[0027] Figure 7 It is a structural diagram of a left-opening hinge mechanism and a right-opening hinge mechanism in one embodiment of the present invention.

[0028] Figure 8 It is a structural diagram of a left hinge transfer mechanism and a right hinge transfer mechanism in one embodiment of the present invention.

[0029] Fig. 9 It is a structural diagram of the left hinge return streamline body and the right hinge return streamline body in one embodiment of the present invention. DETAILED DESCRIPTION

[0030] To facilitate understanding by those skilled in the art, the present invention will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0031] Please refer to Figure 1-9 , the embodiment of the present invention includes:

[0032] A battery core nickel sheet welding device is used to weld the nickel sheet to the battery core, comprising a spot welding fixture 100 for loading the battery core to be processed, a spot welding wire body 200 for transporting the spot welding fixture 100, a spot welding assembly 300 arranged beside the spot welding wire body 200 and welding the nickel sheet to the battery core to be processed, a finished product unloading mechanism 400, and a reflow mechanism 500 for reflowing the spot welding fixture 100, wherein the spot welding fixture 100 comprises a fixture body 101, a spot welding wire body 200 that can be connected to the fixture body 101, and a spot welding assembly 300 that is arranged beside the spot welding wire body 200 and welds the nickel sheet to the battery core to be processed. The left hinge 102 that can be detachably connected to the jig body 101 and the right hinge 103 that can be detachably connected to the jig body 101, multiple cells to be processed are arranged side by side on the upper surface of the jig body 101, the left hinge 102 and the right hinge 103 are respectively clamped on both sides of the cells to be processed, and the reflow mechanism 500 includes a jig body reflow mechanism 600 for reflowing the jig body 101, and a hinge reflow mechanism 700 for reflowing the left hinge 102 and the right hinge 103. The jig body and the left and right hinges are designed separately to facilitate the automation of spot welding.

[0033] The spot welding wire body 200 includes a spot welding wire frame 201, a first conveyor belt 202 arranged on the spot welding wire frame 201 and used to transport the spot welding fixture 100, a first power source 203 driving the first conveyor belt 202 to rotate, a first lifting mechanism 210, a second lifting mechanism 220, a third lifting mechanism 230 and a fourth lifting mechanism 240 for pushing the spot welding fixture 100 away from the conveyor belt; the first lifting mechanism 210 includes a lifting bracket 211, a lifting cylinder 212 installed on the lifting bracket 211, and a lifting plate 213 driven by a push rod of the lifting cylinder 212, and the second lifting mechanism 220, the third lifting mechanism, and the fourth lifting mechanism have the same composition structure as the second lifting mechanism 220. When the spot welding fixture is in place, the cylinder of the second lifting mechanism is lifted to perform secondary positioning on the spot welding fixture. After positioning, welding begins. After welding, it flows to the top of the third lifting mechanism. The mechanism performs secondary positioning. The opening and closing mechanism moves to separate the fixture body and the left and right hinges. After separation, the fixture body flows to the fourth lifting mechanism. The mechanism performs secondary positioning, the finished product is unloaded, and the fixture body reflows. If two spot welding jigs come at the same time, the first lifting mechanism lifts up and divides the material. When the spot welding jig flows to the top of the first lifting mechanism, after the first spot welding jig passes above the first lifting mechanism, the first lifting mechanism lifts upward to prevent multiple spot welding jigs from entering the subsequent processing stations at the same time, ensuring orderly production.

[0034] The spot welding assembly 300 includes a four-axis manipulator 310 and a spot welder 320 clamped by the four-axis manipulator 310. The four-axis manipulator 310 specifically includes an X-moving axis 311, a Y-moving axis 312, a Z-moving axis 313, and an R-moving axis 314. The spot welding assembly 300 is arranged next to the second lifting mechanism 220, and an upper positioning plate 221 is arranged above the second lifting mechanism 220. The second lifting mechanism 220 lifts the spot welding fixture 100. When the upper surface of the spot welding fixture 100 contacts the lower surface of the upper positioning plate 221, the spot welding fixture 100 is clamped and fixed by the second lifting mechanism 220 and the upper positioning plate 221, and the spot welding assembly 300 can weld the nickel sheet to the battery cell in the spot welding fixture 100. After the spot welding fixture is in place, according to the product process requirements, the spot welding assembly moves to the corresponding position and welds the nickel sheet to the corresponding battery cell position as required. After a certain number of pin welding uses, the pin will be worn out and welding quality problems are likely to occur. Make full use of the three-axis linkage of the spot welding assembly to achieve automatic grinding of the pin end face.

[0035] The finished product unloading mechanism 400 includes a finished product assembly line 401 , a cell clamp 402 for clamping a cell, and a unloading robot 403 for driving the cell clamp 402 to move.

[0036] The jig body reflow mechanism 600 includes a jig body reflow line 601, a second conveyor belt 602 disposed on the jig body reflow line 601 and used to transport the jig body 101, a second power source 603 driving the second conveyor belt 602 to rotate, and a jig body clamp 604 clamping the jig body 101, and the jig body clamp 604 is driven to move by the unloading manipulator 403. The spot welding jig flows to the fourth lifting mechanism, the unloading manipulator descends, the battery cell clamp absorbs the battery cell, and the battery cell is laterally transferred to the finished product assembly line, the jig body clamp grabs the jig body, rises, moves laterally, and descends, and the jig body is placed on the jig body reflow line to realize the cycle.

[0037] The hinge return mechanism 700 includes a left-opening hinge mechanism 710 for disassembling the left hinge 102, a left hinge transfer mechanism 720 for clamping the left hinge 102, a left hinge flipping mechanism 730 for flipping the left hinge 102, and a left hinge return line 740 for recirculating the left hinge 102, and a right-opening hinge mechanism 750 for disassembling the right hinge 103, a right hinge transfer mechanism 760 for clamping the right hinge 103, a right hinge flipping mechanism 770 for flipping the right hinge 103, and a right hinge return line 780 for recirculating the right hinge 103.

[0038] The left hinge mechanism 710 includes a left hinge jaw 711, a left hinge jaw cylinder 712 for driving the left hinge jaw 711 to open and close, and a left hinge jaw moving cylinder 713 for driving the left hinge jaw 711 to move. The right hinge mechanism 750 includes a right hinge jaw 751, a right hinge jaw cylinder 752 for driving the right hinge jaw 751 to open and close, and a right hinge jaw moving cylinder 753 for driving the right hinge jaw 751 to move. After the spot welding fixture is in place, the third lifting mechanism is positioned for the second time, the left and right hinge jaws are extended close to the spot welding fixture, the jaw cylinder is started, the jaws clamp the hinge, and the jaw moving cylinder drives the jaws back to their original positions, separating the fixture body from the left and right hinges.

[0039] The left hinge transfer mechanism 720 includes a left hinge clamping head 721, a left hinge clamping head cylinder 722 for driving the left hinge clamping head 721 to open and close, and a left hinge clamping head displacement cylinder 723 for driving the left hinge clamping head 721 to move. The right hinge transfer mechanism 760 includes a right hinge clamping head 761, a right hinge clamping head cylinder 762 for driving the right hinge clamping head 761 to open and close, and a right hinge clamping head displacement cylinder 763 for driving the right hinge clamping head 761 to move. In this embodiment, the left hinge clamping head displacement cylinder 723 and the right hinge clamping head displacement cylinder 763 share the same cylinder. In the hinge transfer mechanism, the clamping head displacement cylinder drives the clamping head to descend to its position, and the clamping head cylinder drives the clamping head to clamp the hinge, then rise and move horizontally, and transport it to the hinge flipping position, waiting for flipping and reflux.

[0040] The left hinge flipping mechanism 730 includes a left hinge clamping head 731, a left hinge clamping head cylinder 732 for driving the left hinge clamping head 731 to open and close, and a first rotating cylinder 733 for driving the left hinge clamping head 731 to rotate. The right hinge flipping mechanism 770 includes a right hinge clamping head 771, a right hinge clamping head cylinder 772 for driving the right hinge clamping head 771 to open and close, and a second rotating cylinder 773 for driving the right hinge clamping head 771 to rotate. In the hinge flipping mechanism, the clamping head clamps the hinge, flips it and places it on the belt line body, and flows back to the nickel sheet.

[0041] The left hinge return streamline body 740 is provided with a third conveyor belt 741 for conveying the left hinge 102 and a third power source 742 for driving the third conveyor belt 741 to rotate, and the right hinge return streamline body 780 is provided with a fourth conveyor belt 781 for conveying the right hinge 103 and a fourth power source 782 for driving the fourth conveyor belt 781 to rotate. In this embodiment, the third power source 742 and the fourth power source 782 share the same power device.

[0042] The battery core nickel sheet welding equipment of the present invention has a spot welding jig that is split into a jig body and a hinge and then reflows. The reflow process of the spot welding jig is orderly and smooth, and the spot welding jig after reflow positions and fixes the battery core in a convenient and efficient manner. The battery core is fixed by placing the battery core on the upper surface of the jig body and then installing the hinge. The automation level is high, and the battery core nickel sheet welding is efficient and reliable.

[0043] The process flow of the battery core nickel sheet welding equipment of the present invention is as follows: the spot welding jig flows to the top of the second lifting mechanism → the mechanism lifts and positions → the spot welding assembly is spot welded → after the spot welding is completed, the spot welding jig flows to the top of the third lifting mechanism → the mechanism lifts and positions → the hinge opening mechanism opens the hinge to separate the hinge from the jig body → the hinge falls to the hinge return line through the transfer mechanism → the hinge returns → on the other hand, the jig body carries the spot-welded product to the top of the fourth lifting mechanism → the product and the jig body are grabbed by the unloading robot to the finished product assembly line and the jig body return line; this reciprocating cycle realizes automated spot welding.

[0044] In the description of the present invention, it is necessary to understand that the terms "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inside", "front", "center", "both ends" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0045] In addition, the terms "first", "second", "third" and "fourth" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first", "second", "third" and "fourth" may explicitly or implicitly include at least one of such features.

[0046] In the present invention, unless otherwise clearly stipulated and limited, the terms such as "installation", "setting", "connection", "fixation" and "screw-on" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the present invention according to the specific circumstances.

[0047] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A battery core nickel sheet welding device, characterized in that: Used for welding a nickel sheet to an electric core, comprising a spot welding jig (100) for loading the electric core to be processed, a spot welding wire body (200) for transporting the spot welding jig (100), a spot welding assembly (300) arranged beside the spot welding wire body (200) and welding the nickel sheet to the electric core to be processed, a finished product unloading mechanism (400), and a reflow mechanism (500) for reflowing the spot welding jig (100), wherein the spot welding jig (100) comprises a jig body (101), and a left hinge detachably connected to the jig body (101). (102), and a right hinge (103) detachably connected to the jig body (101), a plurality of cells to be processed are arranged side by side on the upper surface of the jig body (101), the left hinge (102) and the right hinge (103) are respectively clamped on both sides of the cells to be processed, and the reflow mechanism (500) comprises a jig body reflow mechanism (600) for reflowing the jig body (101), and a hinge reflow mechanism (700) for reflowing the left hinge (102) and the right hinge (103); The spot welding wire body (200) comprises a spot welding wire frame body (201), a first conveyor belt (202) arranged on the spot welding wire frame body (201) and used for conveying the spot welding jig (100), a first power source (203) driving the first conveyor belt (202) to rotate, a first lifting mechanism (210) for pushing the spot welding jig (100) away from the conveyor belt, a second lifting mechanism (220), a third lifting mechanism (230) and a fourth lifting mechanism (240); the first lifting mechanism (210) comprises a lifting bracket (211), a lifting cylinder (212) installed on the lifting bracket (211), and a lifting plate (213) driven by a push rod of the lifting cylinder (212); the second lifting mechanism (220), the third lifting mechanism and the fourth lifting mechanism have the same composition structure as the second lifting mechanism (220); The jig body return mechanism (600) comprises a jig body return line (601), a second conveyor belt (602) arranged on the jig body return line (601) and used to convey the jig body (101), a second power source (603) driving the second conveyor belt (602) to rotate, and a jig body clamp (604) clamping the jig body (101), wherein the jig body clamp (604) is driven to move by a material unloading robot (403); The hinge return mechanism (700) comprises a left opening hinge mechanism (710) for disassembling a left hinge (102), a left hinge transfer mechanism (720) for clamping the left hinge (102), a left hinge flipping mechanism (730) for flipping the left hinge (102), and a left hinge return line body (740) for returning the left hinge (102), and a right opening hinge mechanism (750) for disassembling a right hinge (103), a right hinge transfer mechanism (760) for clamping the right hinge (103), a right hinge flipping mechanism (770) for flipping the right hinge (103), and a right hinge return line body (780) for returning the right hinge (103).

2. The battery core nickel sheet welding equipment according to claim 1, characterized in that: The spot welding assembly (300) comprises a four-axis manipulator (310) and a spot welder (320) clamped by the four-axis manipulator (310), wherein the four-axis manipulator (310) specifically comprises an X movable axis (311), a Y movable axis (312), a Z movable axis (313), and an R movable axis (314); the spot welding assembly (300) is arranged beside the second lifting mechanism (220), and an upper positioning plate (221) is arranged above the second lifting mechanism (220); the second lifting mechanism (220) lifts the spot welding jig (100), and when the upper surface of the spot welding jig (100) contacts the lower surface of the upper positioning plate (221), the spot welding jig (100) is clamped and fixed by the second lifting mechanism (220) and the upper positioning plate (221), and the spot welding assembly (300) can perform nickel sheet welding on the battery core in the spot welding jig (100).

3. The battery core nickel sheet welding equipment according to claim 1, characterized in that: The finished product unloading mechanism (400) comprises a finished product assembly line (401), a battery cell clamp (402) for clamping the battery cell, and a unloading manipulator (403) for driving the battery cell clamp (402) to move.

4. The battery core nickel sheet welding equipment according to claim 1, characterized in that: The left hinge mechanism (710) comprises a left hinge jaw (711), a left hinge jaw cylinder (712) for driving the left hinge jaw (711) to open and close, and a left hinge jaw moving cylinder (713) for driving the left hinge jaw (711) to move; and the right hinge mechanism (750) comprises a right hinge jaw (751), a right hinge jaw cylinder (752) for driving the right hinge jaw (751) to open and close, and a right hinge jaw moving cylinder (753) for driving the right hinge jaw (751) to move.

5. The battery core nickel sheet welding equipment according to claim 1, characterized in that: The left hinge transfer mechanism (720) comprises a left hinge clamping head (721), a left hinge clamping head cylinder (722) for driving the left hinge clamping head (721) to open and close, and a left hinge clamping head displacement cylinder (723) for driving the left hinge clamping head (721) to move; and the right hinge transfer mechanism (760) comprises a right hinge clamping head (761), a right hinge clamping head cylinder (762) for driving the right hinge clamping head (761) to open and close, and a right hinge clamping head displacement cylinder for driving the right hinge clamping head (761) to move.

6. The battery core nickel sheet welding equipment according to claim 1, characterized in that: The left hinge turning mechanism (730) comprises a left hinge clamping head (731), a left hinge clamping head cylinder (732) for driving the left hinge clamping head (731) to open and close, and a first rotating cylinder (733) for driving the left hinge clamping head (731) to rotate; and the right hinge turning mechanism (770) comprises a right hinge clamping head (771), a right hinge clamping head cylinder (772) for driving the right hinge clamping head (771) to open and close, and a second rotating cylinder (773) for driving the right hinge clamping head (771) to rotate.

7. The battery core nickel sheet welding equipment according to claim 1, characterized in that: The left hinge return flow line (740) is provided with a third conveyor belt (741) for conveying the left hinge (102) and a third power source (742) for driving the third conveyor belt (741) to rotate, and the right hinge return flow line (780) is provided with a fourth conveyor belt (781) for conveying the right hinge (103) and a fourth power source (782) for driving the fourth conveyor belt (781) to rotate.

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