A tooling handling device between strings and a string welding machine

Abstract

The present application provides an inter-string tooling handling device and a string welding machine, the inter-string tooling handling device comprises a first transfer mechanism, a picking mechanism and a first tooling, the picking mechanism is installed at the driving end of the first transfer mechanism, the picking mechanism is used to pick up or release the first tooling; the first transfer mechanism is used to drive the picking mechanism to move to the first position or the second position; the first transfer mechanism drives the picking mechanism to move to the first position, the picking mechanism releases the picked up first tooling to the inter-string welding ribbon group of two adjacent battery strings to be welded; the first transfer mechanism drives the picking mechanism to move to the second position, the picking mechanism picks up the first tooling located on the inter-string welding ribbon group of two adjacent battery strings after welding, and the first transfer mechanism drives the picking mechanism with the first tooling to move to the first position. The above-mentioned inter-string tooling handling device can press and fix the string welding ribbon group when the welding ribbon group is welded to the battery cell, so as to avoid the inter-string welding ribbon group being heated, bent and deformed during welding.

Description

Technical Field

[0001] The present application belongs to the technical field of photovoltaic cell assembly production equipment, and in particular relates to an inter-string tooling handling device and a string welding machine. Background Art

[0002] The battery string is formed by stacking the welding ribbon and the battery cells in a predetermined order, and welding the welding ribbon to the grid line of the battery cell. At present, most battery strings are automatically produced by string welding machines, which include welding ribbon feeding mechanisms, battery cell feeding mechanisms, conveyor lines and welding mechanisms. The welding ribbon feeding mechanism pulls several welding ribbon groups to the conveyor line in sequence, and the battery cell feeding mechanism places several battery cells on the conveyor line, so that the front half of each welding ribbon group is located on the upper surface of the previous battery cell, and the rear half is located below the next battery cell, so as to achieve the stacking of welding ribbon groups and battery cells, and the welding mechanism welds the stacked welding ribbon groups and battery cells.

[0003] In order to achieve continuous production of battery strings, after stacking each battery string, the string welding machine will stack the front half of the inter-string welding ribbon group on the last battery cell of the previous battery string, and stack the first battery cell of the next battery string on the back half of the inter-string welding ribbon group; the string welding machine will convey the laid continuous multiple groups of battery strings to the welding station to complete heating and welding, and then use the string cutting knife to cut the inter-string welding ribbon group between two adjacent battery strings to form an independent battery string. In order to avoid damage to the two battery cells connected by the inter-string welding ribbon group during the string cutting process, the length of the inter-string welding ribbon group is usually required to be greater than the length of the welding ribbon group between adjacent battery cells in the battery string. An excessively long inter-string welding ribbon group is easily bent and deformed during the heating and welding process, affecting the quality of the head end welding ribbon group on the first battery cell of the battery string and the tail end welding ribbon group on the tail battery cell. Utility Model Content

[0004] The purpose of the present application is to provide an inter-string tooling and handling device to solve the problem of bending and deformation of the inter-string welding strip at the gap between two adjacent battery strings when heated; another purpose of the present application is to provide a string welding machine including the inter-string tooling and handling device.

[0005] To achieve this goal, this application adopts the following technical solutions:

[0006] In a first aspect, the present application provides a tool transport device between strings, which includes a first transfer mechanism, a picking mechanism and a first tool, wherein:

[0007] The picking mechanism is mounted on the driving end of the first transfer mechanism, and the picking mechanism is configured to pick up or release the first tooling;

[0008] The first transfer mechanism is configured to drive the picking mechanism to move alternately to a first position or a second position, the first position is located in front of the welding station, and the second position is located in the back of the welding station;

[0009] The first conveying mechanism drives the picking mechanism to move to the first position, and the picking mechanism releases the picked-up first tooling onto the inter-string welding ribbon group of two adjacent battery strings to be welded;

[0010] The first transfer mechanism drives the picking mechanism to move to the second position, the picking mechanism picks up the first tooling on the inter-string welding ribbon group of two adjacent battery strings after welding, and the first transfer mechanism drives the picking mechanism with the first tooling to move to the first position.

[0011] The inter-string tooling handling device proposed in the present application can, through the cooperation of the first transfer mechanism, the picking mechanism and the first tooling, press and fix the inter-string welding ribbon groups of two adjacent battery strings to be welded, and release the pressing and fixing of the inter-string welding ribbon groups of two adjacent battery strings after welding, thereby ensuring that the welding ribbon groups are always in a pressed and fixed state during the welding process with the battery cell, avoiding the inter-string welding ribbon groups from being heated, bent and deformed during welding, and ensuring the quality of the head end welding ribbon group on the first battery cell of the battery string and the tail end welding ribbon group on the tail battery cell; at the same time, the first transfer mechanism can realize the automatic flow of the first tooling in the front and back of the welding station, with a high degree of automation, high work efficiency, simplified overall structure and low cost.

[0012] Optionally, the first tooling includes a base, on which a plurality of clamping members are arranged at intervals along its length direction, and each clamping member clamps a welding strip of the inter-string welding strip group.

[0013] A base is provided and a plurality of clamping members are arranged at intervals on the base. When clamping, each clamping member clamps a welding strip of the inter-string welding strip group, ensuring that the first tooling clamps the inter-string welding strip group stably and reliably.

[0014] Optionally, the pressing member includes a pressing pin and an elastic member, and the pressing pin is floatably mounted on the base via the elastic member.

[0015] Through the cooperation of the pressing needle and the elastic member, elastic pressing of the welding strip is achieved, so that the welding strip is prevented from being damaged by the pressing member, and a pressing member adopting floating pressing is provided.

[0016] Optionally, the picking mechanism includes a first magnetic attraction portion, and the first tooling is provided with a second magnetic attraction portion, and the first tooling is picked up or released by the attraction or release of the first magnetic attraction portion and the second magnetic attraction portion;

[0017] Alternatively, the picking mechanism includes a suction cup, and the first tooling is sucked or released by the suction cup to pick up or release the first tooling;

[0018] Alternatively, the picking mechanism includes a clamping member, which clamps or releases the first tooling to pick up or release the first tooling.

[0019] By cooperating with the first magnetic attraction part and the second magnetic attraction part, a picking mechanism for picking up the first tooling by magnetic attraction is provided; by setting a suction cup, a picking mechanism for picking up the first tooling by negative pressure adsorption is provided; by setting a clamping piece, a picking mechanism for picking up the first tooling by clamping is provided.

[0020] Optionally, the first transfer mechanism includes a first driving member, a second driving member and a flipping member, the second driving member is mounted on a driving end of the first driving member, the flipping member is mounted on a driving end of the second driving member, and the picking mechanism is mounted on the flipping member; the first driving member is configured to drive the second driving member and the picking mechanism to slide in a horizontal direction to move the picking mechanism to the first position or the second position;

[0021] The second driving member is configured to drive the flipping member and the picking mechanism to flip in a vertical direction so as to avoid the welding station when the picking mechanism is located between the first position and the second position.

[0022] By setting up the first driving member, the picking mechanism can be moved to the first position or the second position; by the cooperation of the second driving member and the flipping member, the picking mechanism can avoid the welding station when it is alternately moved to the first position or the second position, providing a first transfer mechanism with a simple structure and high transfer efficiency.

[0023] Optionally, the first transfer mechanism further includes a third driving member, the third driving member is mounted on a driving end of the first driving member, the second driving member is mounted on a driving end of the third driving member, and the third driving member is configured to drive the second driving member and the picking mechanism to rise and fall in a vertical direction;

[0024] When the picking mechanism moves to the first position, the second driving member drives the picking mechanism to rotate to just above the gap between two adjacent battery strings, and the third driving member drives the picking mechanism to descend to press the first tool against the inter-string welding ribbon group;

[0025] When the picking mechanism moves to the second position, the third driving member drives the picking mechanism to descend to pick up the first tooling, and the second driving member drives the picking mechanism to flip over to avoid the welding station.

[0026] By setting up the third driving member, the second driving member and the picking mechanism are driven to rise and fall; thereby, the first transfer mechanism can drive the picking mechanism to move horizontally, flip and rise and fall, so as to pick up, release and transfer the first tooling; and a first transfer mechanism that is easy to control is provided.

[0027] Optionally, the first driving member includes a base, a motor, a first pulley, a second pulley, a transmission belt and a transverse shift seat. The transverse shift seat can be installed on the base for reciprocating movement along a first direction. The first pulley and the second pulley are spaced apart along the first direction. The rotating shaft of the motor is connected to the first pulley, the second pulley is rotatably installed on the base, the transmission belt is connected to the first pulley and the second pulley, and the transverse shift seat is fixedly connected to the transmission belt.

[0028] The first pulley is driven to rotate by a motor, and the cooperation of the first pulley, the second pulley and the transmission belt drives the transverse shift seat to reciprocate in the first direction, thereby moving the picking mechanism to the first position or the second position; a first driving component with a simple structure, stable and reliable operation and precise stroke control is provided.

[0029] Optionally, the third driving member includes a first cylinder and a lifting member, the fixed end of the first cylinder is connected to the transverse seat, the driving end of the first cylinder is connected to the lifting member, and the second driving member is installed on the lifting member.

[0030] The lifting member is driven to move up and down by the first cylinder, thereby driving the second driving member to move up and down, thereby driving the picking mechanism to move up and down.

[0031] Optionally, the second driving member includes a second cylinder, a fixed end of the second cylinder is installed on the lifting member, a driving end of the second cylinder is connected to the flip member, and the second cylinder is used to drive the flip member to rotate in the vertical direction.

[0032] The flipping member is driven to rotate in the vertical direction by the second cylinder, providing a second driving member with a simple structure, easy implementation and low cost.

[0033] In a second aspect, the present application further provides a string welding machine, which includes a welding strip feeding mechanism, a battery cell feeding mechanism, a conveying mechanism, a welding mechanism and the above-mentioned string inter-tool handling device, wherein:

[0034] The solder strip feeding mechanism is used to provide the solder strip group to the conveying mechanism; the battery cell feeding mechanism is used to provide the battery cells to the conveying mechanism; the solder strip feeding mechanism and the battery cell feeding mechanism stack the solder strip group and the battery cells on the conveying mechanism in a predetermined manner for stringing;

[0035] The conveying mechanism is configured to convey the assembled battery string along a first direction, the welding station is arranged on the conveying path of the conveying mechanism, the welding mechanism is arranged at the welding station, and the welding mechanism is configured to weld the welding ribbon group and the battery cell at the welding station;

[0036] The inter-string tooling and handling device is configured to press and fix the inter-string solder ribbon group on the conveying mechanism before the solder ribbon group and the battery cell are welded, and the inter-string tooling and handling device is also configured to release the pressing and fixing of the inter-string solder ribbon group after the solder ribbon group and the battery cell are welded.

[0037] Through the cooperation of the welding tape feeding mechanism, the battery cell feeding mechanism, the conveying mechanism and the welding mechanism, the automatic stringing and welding of the battery strings are realized; through the inter-string tooling handling device, it can be ensured that the welding tape group is always pressed and fixed on the conveying mechanism during the welding process with the battery cell, so as to avoid the inter-string welding tape group being heated, bent and deformed during welding, thereby ensuring the quality of the first end welding tape group on the first battery cell of the battery string and the tail end welding tape group on the tail battery cell; at the same time, the first transfer mechanism can realize the automatic flow of the first tooling in the front and back of the welding station, with a high degree of automation and high work efficiency.

[0038] Optionally, the string welding machine also includes a second conveying mechanism and a second tooling, and the second conveying mechanism is configured to convey the second tooling to the stacked solder ribbon group before the solder ribbon group and the battery cell are welded, so as to press the stacked solder ribbon group onto the corresponding battery cell; the second conveying mechanism is also configured to convey the second tooling away from the battery string after the solder ribbon group and the battery cell are welded.

[0039] Through the cooperation of the second transport mechanism and the second tooling, when the welding ribbon group and the battery cell are welded, the stacked welding ribbon group is pressed against the corresponding battery cell to ensure good contact between the welding ribbon and the welding point, which can greatly improve the welding quality of the welding ribbon group. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 It is a schematic diagram of the three-dimensional structure of the string welding machine provided in the embodiment of the present application;

[0041] Figure 2 It is a schematic diagram of the three-dimensional structure of the inter-string tooling transport device provided in an embodiment of the present application;

[0042] Figure 3 It is a partial structural schematic diagram of the inter-string tooling transport device provided in an embodiment of the present application;

[0043] Figure 4 It is a schematic diagram of the three-dimensional structure of the first tool of the inter-string tool transport device provided in an embodiment of the present application;

[0044] Figure 5 It is a cross-sectional schematic diagram of the first tool of the inter-string tool transporting device provided in an embodiment of the present application.

[0045] Figures 1 to 5 The following reference numerals are included:

[0046] The tooling handling device 10 between strings includes: a first transfer mechanism 11, a first driving member 110, a base 1100, a motor 1101, a first pulley 1102, a second pulley 1103, a transmission belt 1104, a transverse seat 1105, a second driving member 111, a second cylinder 1110, a first limiter 1111, a second limiter 1112, a flip member 112, a third driving member 113, a first cylinder 1130, a lifting member 1131, a picking mechanism 12, a first magnetic attraction portion 120, an electromagnet 1200, a first tooling 13, a base 130, a pressing member 131, a pressing needle 1310, an elastic member 1311, a second magnetic attraction portion 132, and a metal block 1320;

[0047] Welding station 20;

[0048] Conveying mechanism 30;

[0049] Welding mechanism 40. DETAILED DESCRIPTION

[0050] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, the present application is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0051] The battery string is formed by stacking the welding ribbon and the battery cells in a predetermined order, and welding the welding ribbon to the grid line of the battery cell. At present, most battery strings are automatically produced by string welding machines, which include welding ribbon feeding mechanisms, battery cell feeding mechanisms, conveyor lines and welding mechanisms. The welding ribbon feeding mechanism pulls several welding ribbon groups to the conveyor line in sequence, and the battery cell feeding mechanism places several battery cells on the conveyor line, so that the front half of each welding ribbon group is located on the upper surface of the previous battery cell, and the rear half is located below the next battery cell, so as to achieve the stacking of welding ribbon groups and battery cells, and the welding mechanism welds the stacked welding ribbon groups and battery cells.

[0052] In order to achieve continuous production of battery strings, after stacking each battery string, the string welding machine will stack the front half of the inter-string welding ribbon group on the tail battery cell of the previous battery string, and stack the first battery cell of the next battery string on the rear half of the inter-string welding ribbon group; the string welding machine will convey the laid continuous multiple groups of battery strings to the welding station to complete heating and welding, and then use the string cutting knife to cut the series welding ribbon group between two adjacent battery strings to form an independent battery string. In order to avoid damage to the two battery cells connected by the inter-string welding ribbon group during the string cutting process, the length of the inter-string welding ribbon group is usually required to be greater than the length of the welding ribbon group between adjacent battery cells in the battery string. An excessively long inter-string welding ribbon group is easily bent and deformed during the heating and welding process, affecting the quality of the head end welding ribbon group on the first battery cell of the battery string and the tail end welding ribbon group on the tail battery cell.

[0053] Therefore, this application proposes a tooling transport device between strings, see Figure 1 and Figure 2 As shown, the inter-string tooling transport device 10 proposed in the embodiment of the present application includes a first transfer mechanism 11, a picking mechanism 12 and a first tooling 13, the picking mechanism 12 is installed at the driving end of the first transfer mechanism 11, and the picking mechanism 12 is configured to pick up or release the first tooling 13; the first transfer mechanism 11 is configured to drive the picking mechanism 12 to move alternately to a first position or a second position, the first position is located in the front of the welding station 20, and the second position is located in the back of the welding station 20; the first transfer mechanism 11 drives the picking mechanism 12 to move to the first position, and the picking mechanism 12 releases the picked up first tooling 13 to the inter-string welding ribbon group of two adjacent battery strings to be welded; the first transfer mechanism 11 drives the picking mechanism 12 to move to the second position, and the picking mechanism 12 picks up the first tooling 13 located on the inter-string welding ribbon group of two adjacent battery strings after welding, and the first transfer mechanism 11 drives the picking mechanism 13 with the first tooling 13 to move to the first position.

[0054] It can be seen that the inter-string tooling handling device 10 proposed in the present application can, through the cooperation of the first transfer mechanism 11, the picking mechanism 12 and the first tooling 13, press and fix the inter-string welding ribbon group of two adjacent battery strings to be welded, and release the pressing and fixing of the inter-string welding ribbon group of two adjacent battery strings after welding, thereby ensuring that the welding ribbon group is always in a pressed and fixed state during the welding process with the battery cell, avoiding the inter-string welding ribbon group from being heated and bent and deformed during welding, and ensuring the quality of the head end welding ribbon group on the first battery cell of the battery string and the tail end welding ribbon group on the tail battery cell; at the same time, the first transfer mechanism 11 can realize the automatic flow of the first tooling 13 in the front and back of the welding station 20, with a high degree of automation, high work efficiency, simplified overall structure and low cost.

[0055] See also Figure 4 and Figure 5 As shown, as an embodiment, the first tool 13 includes a base 130, and a plurality of clamping members 131 are arranged on the base 130 at intervals along its length direction, and each clamping member 131 clamps a welding strip of the inter-string welding strip group.

[0056] It can be seen that by setting the base 130 and arranging a plurality of clamping members 131 at intervals on the base 130, when clamping, each clamping member 131 clamps a welding strip of the inter-string welding strip group, ensuring that the first tooling 13 clamps the inter-string welding strip group stably and reliably.

[0057] As an implementation manner, the pressing member 131 includes a pressing pin 1310 and an elastic member 1311 , and the pressing pin 1310 is floatably mounted on the base 130 via the elastic member 1311 .

[0058] It can be seen that, through the cooperation of the pressing needle 1310 and the elastic member 1311, elastic compression of the solder strip is achieved, which prevents the pressing member 131 from damaging the solder strip, and provides a pressing member 131 using floating compression.

[0059] See also Figures 1 to 4 As shown, as an embodiment, the picking mechanism 12 includes a first magnetic attraction portion 120, and a second magnetic attraction portion 132 is provided on the first tooling 13, and the first magnetic attraction portion 120 and the second magnetic attraction portion 132 are attracted or released to pick up or release the first tooling 13.

[0060] Specifically, the first magnetic attraction part 120 includes two electromagnets 1200, which are installed at intervals at the driving end of the first transfer mechanism 11. The second magnetic attraction part 132 includes two metal blocks 1320 (the metal blocks are made of iron or other paramagnets), which are respectively installed at both ends of the base 130 along its own length, and each electromagnet 1200 corresponds to a metal block 1320.

[0061] It can be seen that, through the cooperation between the first magnetic attraction portion 120 and the second magnetic attraction portion 132 , a picking mechanism 12 for picking up the first tooling 13 by magnetic attraction is provided.

[0062] As an implementation manner, the picking mechanism 12 includes a suction cup, and the first tooling 13 is adsorbed or released by the suction cup to pick up or release the first tooling 13.

[0063] It can be seen that by providing a suction cup, a picking mechanism 12 is provided for picking up the first tooling 13 by means of negative pressure adsorption.

[0064] As an implementation manner, the picking mechanism 12 includes a clamping member, which clamps or releases the first tooling 13 to pick up or release the first tooling 13 .

[0065] It can be seen that by providing the clamping member, a picking mechanism 12 for picking up the first tooling 13 in a clamping manner is provided.

[0066] See also Figures 1 to 3As shown, as an embodiment, the first transfer mechanism 11 includes a first driving member 110, a second driving member 111 and a flipping member 112, the second driving member 111 is installed at the driving end of the first driving member 110, the flipping member 112 is installed at the driving end of the second driving member 111, and the picking mechanism 12 is installed on the flipping member 112; the first driving member 110 is configured to drive the second driving member 111 and the picking mechanism 12 to slide in the horizontal direction to move the picking mechanism 12 to the first position or the second position; the second driving member 111 is configured to drive the flipping member 112 and the picking mechanism 12 to flip in the vertical direction to avoid the welding station 20 when the picking mechanism 12 is between the first position and the second position.

[0067] It can be seen that by setting the first driving member 110, the picking mechanism 12 can be moved to the first position or the second position; through the cooperation of the second driving member 111 and the flipping member 112, the picking mechanism 12 can avoid the welding station 20 when it is alternately moved to the first position or the second position, providing a first transfer mechanism 11 with a simple structure and high transfer efficiency.

[0068] As an embodiment, the first transfer mechanism 11 also includes a third driving member 113, the third driving member 113 is installed at the driving end of the first driving member 110, the second driving member 111 is installed at the driving end of the third driving member 113, and the third driving member 113 is configured to drive the second driving member 111 and the picking mechanism 12 to rise and fall in the vertical direction; when the picking mechanism 12 moves to the first position, the second driving member 111 drives the picking mechanism 12 to rotate to just above the gap between two adjacent battery strings, and the third driving member 113 drives the picking mechanism 12 to descend to press the first tooling 13 against the inter-string welding ribbon group; when the picking mechanism 12 moves to the second position, the third driving member 113 drives the picking mechanism 12 to descend to pick up the first tooling 13, and the second driving member 111 drives the picking mechanism 12 to flip over to avoid the welding station 20.

[0069] It can be seen that by setting the third driving member 113, the second driving member 111 and the picking mechanism 12 are driven to rise and fall; thereby, the first transfer mechanism 11 can drive the picking mechanism 12 to move horizontally, flip and rise and fall, so as to pick up, release and transfer the first tooling 13; and a first transfer mechanism 11 that is easy to control is provided.

[0070] As an embodiment, the first driving member 110 includes a base 1100, a motor 1101, a first pulley 1102, a second pulley 1103, a transmission belt 1104 and a transverse shift seat 1105. The transverse shift seat 1105 can move in a first direction ( Figure 1The first pulley 1102 and the second pulley 1103 are spaced apart along the first direction, the rotating shaft of the motor 1101 is connected to the first pulley 1102, the second pulley 1103 is rotatably mounted on the base 1100, the transmission belt 1104 is connected to the first pulley 1102 and the second pulley 1103, and the transverse shift seat 1105 is fixedly connected to the transmission belt 1104.

[0071] Specifically, the first pulley 1102 and the second pulley 1103 are both synchronous pulleys, and the transmission belt 1104 is a synchronous belt.

[0072] Specifically, a guide assembly is provided between the transverse shift seat 1105 and the base 1100 , and the guide assembly includes a linear guide rail installed on the base 1100 , the linear guide rail extends along a first direction, and the transverse shift seat 1105 is installed on the linear guide rail through a slider.

[0073] It can be seen that the first pulley 1102 is driven to rotate by the motor 1101, and the cooperation of the first pulley 1102, the second pulley 1103 and the transmission belt 1104 drives the transverse shift seat 1105 to reciprocate in the first direction, thereby moving the picking mechanism 12 to the first position or the second position; providing a first driving member 110 with a simple structure, stable and reliable operation and precise stroke control.

[0074] As an embodiment, the third driving member 113 includes a first cylinder 1130 and a lifting member 1131, the fixed end of the first cylinder 1130 is connected to the transverse displacement seat 1105, the driving end of the first cylinder 1130 is connected to the lifting member 1131, and the second driving member 111 is installed on the lifting member 1131.

[0075] It can be seen that the lifting member 1131 is driven to move up and down by the first cylinder 1130, which in turn drives the second driving member 111 to move up and down, thereby driving the picking mechanism 12 to move up and down.

[0076] As an embodiment, the second driving member 111 includes a second cylinder 1110, the fixed end of the second cylinder 1110 is installed on the lifting member 1131, the driving end of the second cylinder 1110 is connected to the flip member 112, and the second cylinder 1110 is used to drive the flip member 112 to rotate in the vertical direction.

[0077] Specifically, the second driving member 111 also includes a first limit member 1111 and a second limit member 1112 for controlling the flipping stroke of the flip member 112. The first limit member 1111 is used to control the maximum upward flipping stroke of the flip member 112, and the second limit member 1112 is used to control the maximum downward flipping stroke of the flip member 112.

[0078] Specifically, the second cylinder 1110 drives the flipping member 112 to flip upward to a vertical state or flip downward to a horizontal state.

[0079] It can be seen that the flip member 112 is driven to rotate in the vertical direction by the second cylinder 1110, providing a second driving member 111 with a simple structure, easy implementation and low cost.

[0080] The specific working principle of the tool handling device between strings provided in the embodiment of the present application includes the following steps:

[0081] When the first tooling 13 is released in front of the welding station 20: first, the first driving member 110 drives the picking mechanism 12 and the first tooling 13 picked up by the picking mechanism 12 to move to the first position; then, the second driving member 111 drives the flipping member 112 in the vertical state to flip downward to a horizontal state, so that the first tooling 13 picked up by the picking mechanism 12 is directly above the gap between two adjacent battery strings in front of the welding station 20; finally, the third driving member 113 drives the picking mechanism 12 and the first tooling 13 picked up by the picking mechanism 12 to descend to a preset height, and the picking mechanism 12 releases the picked up first tooling 13, so that the first tooling 13 is pressed against the corresponding inter-string welding ribbon group.

[0082] When picking up the first tooling 13 at the back of the welding station 20: first, the first driving member 110 drives the picking mechanism 12 to move to the second position, and then the second driving member 111 drives the flipping member 112 in the vertical state to flip downward to a horizontal state, so that the picking mechanism 12 is directly above the gap between two adjacent battery strings at the back of the welding station 20; finally, the third driving member 113 drives the picking mechanism 12 to descend to a preset height, and the picking mechanism 12 picks up the first tooling 13 on the corresponding inter-string welding ribbon group.

[0083] The inter-string tooling transport device provided in the embodiment of the present application has the following advantages:

[0084] 1) During the welding process of the welding ribbon group with the battery cell, the string welding ribbon group is always in a compressed and fixed state to prevent the welding ribbon group between the strings from being heated and bent during welding, thereby ensuring the quality of the first end welding ribbon group on the first battery cell of the battery string and the tail end welding ribbon group on the tail battery cell.

[0085] 2) The first transfer mechanism can realize the automatic flow of the first tooling in the front and back of the welding station, with high automation, high work efficiency, simplified overall structure and low cost.

[0086] 3) The clamping parts can clamp the welding strips between strings stably and reliably, and the elastic clamping method can also avoid crushing the welding strips.

[0087] 4) The overall structure of the first moving mechanism is compact, occupies a small space, and has precise stroke control.

[0088] Second, see Figure 1 As shown, the present application also provides a string welding machine, which includes a welding strip feeding mechanism, a battery cell feeding mechanism, a conveying mechanism 30, a welding mechanism 40 and the above-mentioned string inter-tool handling device 10, wherein:

[0089] The welding ribbon feeding mechanism is used to provide the welding ribbon group to the conveying mechanism 30; the battery cell feeding mechanism is used to provide the battery cells to the conveying mechanism 30; the welding ribbon feeding mechanism and the battery cell feeding mechanism stack the welding ribbon group and the battery cells on the conveying mechanism 30 in a predetermined manner for stringing; the conveying mechanism 30 is configured to move in a first direction ( Figure 1 The battery string after stringing is transported in the X direction in the middle, the welding station 20 is arranged on the conveying path of the conveying mechanism 30, the welding mechanism 40 is arranged at the welding station 20, and the welding mechanism 40 is configured to weld the welding ribbon group and the battery cell at the welding station 20; the inter-string tooling and handling device 10 is configured to press and fix the inter-string welding ribbon group on the conveying mechanism 30 before the welding ribbon group and the battery cell are welded, and the inter-string tooling and handling device 10 is also configured to release the pressing and fixing of the inter-string welding ribbon group after the welding ribbon group and the battery cell are welded.

[0090] It can be seen that the automatic stringing and welding of the battery strings are achieved through the cooperation of the welding tape feeding mechanism, the battery cell feeding mechanism, the conveying mechanism 30 and the welding mechanism 40; the inter-string tooling handling device 10 can ensure that the welding tape group is always pressed and fixed on the conveying mechanism 30 during the welding process with the battery cell, so as to avoid the inter-string welding tape group being heated, bent and deformed during welding, thereby ensuring the quality of the first end welding tape group on the first battery cell of the battery string and the tail end welding tape group on the tail battery cell; at the same time, the first transfer mechanism 11 can realize the automatic flow of the first tooling 13 in the front and back of the welding station 20, with a high degree of automation and high work efficiency.

[0091] As an embodiment, the string welding machine also includes a second conveying mechanism and a second tooling, and the second conveying mechanism is configured to convey the second tooling to the stacked solder ribbon group before the solder ribbon group and the battery cell are welded, so as to press the stacked solder ribbon group onto the corresponding battery cell; the second conveying mechanism is also configured to convey the second tooling away from the battery string after the solder ribbon group and the battery cell are welded.

[0092] It can be seen that through the cooperation of the second transport mechanism and the second tooling, the stacked solder ribbon groups are pressed against the corresponding battery cells when the solder ribbon groups and battery cells are welded to ensure good contact between the solder ribbons and the welding points, which can greatly improve the welding quality of the solder ribbon groups.

[0093] The above embodiments are only to illustrate the basic principles and characteristics of the present application. The present application is not limited by the above examples. Without departing from the spirit and scope of the present application, the present application may be subject to various changes and modifications, which are within the scope of the present application to be protected. The scope of protection claimed in the present application is defined by the attached claims and their equivalents.

Claims

1. A tooling handling device between strings, characterized in that: The inter-string tooling transport device comprises a first transfer mechanism, a picking mechanism and a first tooling, wherein: The picking mechanism is installed at the driving end of the first transfer mechanism, and the picking mechanism is configured to pick up or release the first tool; The first transfer mechanism is configured to drive the picking mechanism to move alternately to a first position or a second position, the first position is located in front of the welding station, and the second position is located in the back of the welding station; The first conveying mechanism drives the picking mechanism to move to the first position, and the picking mechanism releases the picked-up first tool onto the inter-string welding ribbon group of two adjacent battery strings to be welded; The first transfer mechanism drives the picking mechanism to move to the second position, the picking mechanism picks up the first tooling on the inter-string welding ribbon group of two adjacent battery strings after welding, and the first transfer mechanism drives the picking mechanism with the first tooling to move to the first position.

2. The tooling transport device between strings according to claim 1, characterized in that: The first tooling comprises a base, on which a plurality of clamping members are arranged at intervals along the length direction thereof, and each of the clamping members clamps a welding strip of the inter-string welding strip group.

3. The tooling transport device between strings according to claim 2, characterized in that: The pressing member comprises a pressing needle and an elastic member, and the pressing needle is floatably mounted on the base through the elastic member.

4. The tooling transport device between strings according to claim 1, characterized in that: The picking mechanism comprises a first magnetic attraction portion, and the first tooling is provided with a second magnetic attraction portion, and the first tooling is picked up or released by the attraction or release of the first magnetic attraction portion and the second magnetic attraction portion; Alternatively, the picking mechanism includes a suction cup, and the first tooling is adsorbed or released by the suction cup to pick up or release the first tooling; Alternatively, the picking mechanism includes a clamping member, and the first tooling is clamped or released by the clamping member to pick up or release the first tooling.

5. The tooling transport device between strings according to claim 1, characterized in that: The first transfer mechanism comprises a first driving member, a second driving member and a flipping member, the second driving member is mounted on a driving end of the first driving member, the flipping member is mounted on a driving end of the second driving member, and the picking mechanism is mounted on the flipping member; The first driving member is configured to drive the second driving member and the picking mechanism to slide in a horizontal direction so as to move the picking mechanism to a first position or a second position; The second driving member is configured to drive the flipping member and the picking mechanism to flip in a vertical direction, so as to avoid a welding station when the picking mechanism is located between the first position and the second position.

6. The tooling transport device between strings according to claim 5, characterized in that: The first transfer mechanism further includes a third driving member, the third driving member is mounted on a driving end of the first driving member, the second driving member is mounted on a driving end of the third driving member, and the third driving member is configured to drive the second driving member and the picking mechanism to rise and fall in a vertical direction; When the picking mechanism moves to the first position, the second driving member drives the picking mechanism to rotate to just above the gap between two adjacent battery strings, and the third driving member drives the picking mechanism to descend to press the first tool against the inter-string welding ribbon group; When the picking mechanism moves to the second position, the third driving member drives the picking mechanism to descend to pick up the first tool, and the second driving member drives the picking mechanism to flip over to avoid the welding station.

7. The tooling transport device between strings according to claim 6, characterized in that: The first driving member includes a base, a motor, a first pulley, a second pulley, a transmission belt and a transverse shift seat. The transverse shift seat can be installed on the base so as to be reciprocatingly movable along a first direction. The first pulley and the second pulley are spaced apart along the first direction. The rotating shaft of the motor is connected to the first pulley, and the second pulley is rotatably installed on the base. The transmission belt is connected to the first pulley and the second pulley, and the transverse shift seat is fixedly connected to the transmission belt.

8. The tooling transport device between strings according to claim 7, characterized in that: The third driving member includes a first cylinder and a lifting member, the fixed end of the first cylinder is connected to the transverse shift seat, the driving end of the first cylinder is connected to the lifting member, and the second driving member is installed on the lifting member.

9. The tooling transport device between strings according to claim 8, characterized in that: The second driving member includes a second cylinder, a fixed end of the second cylinder is installed on the lifting member, a driving end of the second cylinder is connected to the flip member, and the second cylinder is used to drive the flip member to rotate in a vertical direction.

10. A string welding machine, characterized in that: The string welding machine comprises a welding ribbon feeding mechanism, a battery cell feeding mechanism, a conveying mechanism, a welding mechanism and a string-to-string tooling handling device as claimed in any one of claims 1 to 9, wherein: The welding tape feeding mechanism is used to provide the welding tape group to the conveying mechanism; The battery cell feeding mechanism is used to provide battery cells to the conveying mechanism; The solder ribbon feeding mechanism and the battery cell feeding mechanism stack the solder ribbon group and the battery cells on the conveying mechanism in a predetermined manner for stringing; The conveying mechanism is configured to convey the assembled battery string along a first direction, the welding station is arranged on a conveying path of the conveying mechanism, the welding mechanism is arranged at the welding station, and the welding mechanism is configured to weld the welding ribbon group and the battery cell at the welding station; The inter-string tooling and handling device is configured to press and fix the inter-string weld ribbon group on the conveying mechanism before the weld ribbon group and the battery cell are welded, and the inter-string tooling and handling device is also configured to release the pressing and fixing of the inter-string weld ribbon group after the weld ribbon group and the battery cell are welded.

11. The stringer according to claim 10, characterized in that: The string welding machine also includes a second conveying mechanism and a second tooling, wherein the second conveying mechanism is configured to convey the second tooling to the stacked solder ribbon group before the solder ribbon group and the battery cell are welded, so as to press the stacked solder ribbon group onto the corresponding battery cell; the second conveying mechanism is also configured to convey the second tooling away from the battery string after the solder ribbon group and the battery cell are welded.

Images