CN105817823B - Battery cell clamp pushing device and automatic welding machine adopting same - Google Patents

Abstract

The invention discloses a battery cell clamp pushing device which comprises a battery cell clamp and a clamp pushing mechanism, wherein the clamp pushing mechanism comprises a pushing base, a pushing cylinder and a pushing piece, the pushing cylinder and the pushing piece are arranged on the pushing base, the pushing piece is movably arranged on the pushing base and can be driven by the pushing cylinder to move, the battery cell clamp comprises a battery cell tray and a tray base, and the battery cell tray is arranged on the tray base and can be pushed by the pushing piece to move. By arranging the clamp pushing mechanism matched with the battery cell clamp, when the battery cell is subjected to ultrasonic welding, the welding seat of the ultrasonic welding machine does not need to be moved, and the battery cell clamp can be pushed to the welding seat by the clamp pushing mechanism, so that the welding of the battery cell can be realized, the ultrasonic welding process is simplified, and the production efficiency of the battery is improved; simultaneously, for promoting ultrasonic bonding seat and carrying out the welded mode, the mode propelling movement precision of the battery cell that the promotion quality is lighter is higher, has improved the welding quality of welding precision and battery cell.

Description

Cell fixture pushing device and automatic welding machine using the pushing device

technical field

The invention relates to the technology in the field of battery production, in particular to a battery cell clamp pushing device and an automatic welding machine using the pushing device.

Background technique

The lithium-ion battery is mainly composed of a casing, a cap, a positive electrode and a negative electrode. The positive electrode is welded to the cap through the positive lug, the negative electrode is welded to the bottom of the casing through the negative lug, and the cap is tightly placed on the opening of the casing. At present, the ultrasonic welding machine is mainly used for welding the cap and the positive ear. The ultrasonic welding machine mainly includes an ultrasonic generator, a pneumatic part, a transducer, a welding head and a welding seat. The welding is generally carried out by fixing the battery and moving the welding seat. , that is, the battery needs to be fixed in the corresponding fixture during welding, and at the same time, the welding seat is moved close to the cap of the battery, and the welding head of the welding seat moves to weld the cap and the positive tab. This welding method has many procedures and seriously affects the lithium battery. The production efficiency is high, and it is necessary to set up corresponding equipment to move the ultrasonic welding machine, which increases the production cost of the enterprise. At the same time, due to the large size of the ultrasonic welding machine, it is difficult to ensure the movement accuracy, which affects the welding quality during welding.

Contents of the invention

The purpose of the present invention is to provide a battery cell fixture pushing device and an automatic welding machine using the pushing device, which can improve the production efficiency of the battery cell and improve the welding quality of the battery cell.

To achieve the above object, the present invention adopts the following technical solutions:

A cell clamp pushing device, comprising a cell clamp and a clamp pushing mechanism, the clamp pushing mechanism includes a pushing base, a pushing cylinder and a pushing piece arranged on the pushing base, the pushing piece is movably arranged on the pushing base, and It can be driven and moved by a push cylinder, and the cell fixture includes a cell tray and a tray base, and the cell tray is set on the tray base and can be pushed and moved by a push piece.

As a preferred solution, the push mechanism also includes a push base, the push base is provided with a first slide rail extending longitudinally, the push base is arranged on the first slide rail, and can be set on the push base The lifting cylinder on the seat is driven to move up and down along the first slide rail. The push base is provided with a second slide rail extending laterally. The push piece is slid on the second slide rail and can be driven by the push cylinder Slide rail moves.

As a preferred solution, the battery tray is provided with a positioning rod that cooperates with the push piece, the upper end of the positioning rod is provided with a positioning hole with an opening facing upward, and the front end of the push piece is provided with a positioning hole corresponding to the positioning hole. The positioning pin, when working, the push piece is driven by the push base to move downward, and the positioning pin is inserted into the positioning hole.

As a preferred solution, a V-shaped positioning groove with an opening facing downward is provided below the front end of the push piece, the positioning pin is arranged at the bottom of the positioning groove and protrudes downward, and the positioning rod is located on both sides of the positioning hole. The side is provided with a positioning slope corresponding to the positioning groove. When working, the push piece moves downward with the pushing base, and is clamped to the upper end of the positioning rod through the positioning groove and the positioning slope, and the positioning pin is inserted into the positioning hole.

As a preferred solution, the tray base is provided with a tray clamp for fixing the battery tray, the tray clamp includes two clamping blocks arranged on both sides of the positioning rod, and the tray base is provided with two clamping blocks. The block always has a reset mechanism whose front end keeps clamping the positioning rod and the rear end keeps opening; a block for opening the tray clamp is provided under the push base, and the block has a slot with the opening facing downward, and The opening of the clamping slot increases gradually from top to bottom, and the rear ends of the two clamping blocks are equipped with follower bearings; when working, the clamping block moves downward with the push base, and the two side walls of the clamping slot are respectively clamped. on the outer sides of the two follower bearings, and make the rear ends of the two clamping blocks close and the front ends open.

As a preferred solution, the cell fixture also includes a cell press plate and a press plate mounting frame, the press plate mounting frame is fixedly installed on the tray base, and the pressure plate mounting frame is provided with a pressure plate protruding toward the top of the cell tray. The swing rod and the tension spring that makes the pressure swing rod have a downward tendency, the cell pressing plate is installed on the free end of the pressure swing rod, and the lower surface is against the upper surface of the cell on the cell tray.

As a preferred solution, it also includes a press-down mechanism, the press-down mechanism includes a press-down bracket, the upper end of the press-down bracket is provided with a support arm protruding above the battery tray, and the free end of the support arm A downward pressure cylinder is provided with the extension direction of the telescopic rod. When working, the battery tray is pushed down by the downward pressure cylinder to move.

As a preferred solution, the press-down cylinder is located above the pressure swing rod. During welding, the telescopic rod of the press-down cylinder extends downwards against the pressure swing rod, and the pressure swing rod drives the cell pressure plate to press against the electric core on the cell on the cell tray, and move the cell and the cell tray downward.

As a preferred solution, the cell fixture further includes a fixture bottom plate, the tray base is movably mounted on the fixture bottom plate through a plurality of guide rods, a buffer spring is interposed between the tray base and the fixture bottom plate, and the fixture A jacking mechanism is provided below the bottom plate, and the jacking mechanism includes a push cylinder with a telescopic rod facing upwards.

An automatic battery cell welding machine for a power battery includes an ultrasonic welding machine and a turntable, the ultrasonic welding machine is fixed outside the turntable, and the aforementioned cell clamp pushing device is provided on the turntable.

Working process of the present invention is as follows:

The lifting cylinder drives the push base to move downward, and drives the push cylinder and the push piece on the push base to move downward. The positioning pin at the front end of the push piece is inserted into the positioning hole of the positioning rod first, and then the push piece passes through the positioning hole under its front end. The groove and the positioning inclined surface are snapped on the upper end of the positioning rod. At the same time, the slot of the block under the push base is stuck on the outside of the two follower bearings, and pressed downward to open the pallet clamp. Then, the push cylinder drives the push piece Moving forward, the pushing piece pushes the cell tray forward, and then the push cylinder located under the bottom plate of the fixture presses upward against the bottom plate of the fixture, and the press cylinder in the down pressure mechanism presses down on the pressure swing rod, and the pressure swing rod goes up The battery cell pressing plate is pressed on the battery cell on the battery cell tray, so that the battery cell and the battery cell tray move downward.

Compared with the prior art, the present invention has obvious advantages and beneficial effects. Specifically, by setting a clamp pushing mechanism that cooperates with the battery clamp, it is no longer necessary to move the ultrasonic welding machine when performing ultrasonic welding on the battery. Welding seat, and only need the jig push mechanism to push the cell fixture to the welding seat to realize the welding of the cell, which simplifies the ultrasonic welding process, improves the production efficiency of the battery, and reduces the production cost of the enterprise; at the same time, due to the electric The core fixture is assembled with the fixture pushing mechanism, which optimizes the production layout of the enterprise, reduces the equipment cost of the enterprise, and does not occupy other production space, which improves the utilization rate of space; in addition, compared with pushing the ultrasonic welding seat for welding The way to push the lighter weight battery is more accurate, which also improves the welding accuracy and the welding quality of the battery.

In order to more clearly illustrate the structural features, technical means and the specific objectives and functions achieved by the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments:

Description of drawings

Fig. 1 is the assembled structural diagram of the embodiment of the present invention;

Fig. 2 is the structural diagram of the cell clamp of the embodiment of the present invention;

Fig. 3 is the structural diagram of the clamp pushing mechanism and the pressing mechanism of the embodiment of the present invention;

Fig. 4 is the enlarged schematic diagram of place A in Fig. 1;

Fig. 5 is a schematic diagram of the use state of the embodiment of the present invention.

detailed description

First of all, please refer to FIG. 1 , a cell clamp pushing device includes a cell clamp 10 , a pressing mechanism 30 , a jacking mechanism 40 and a clamp pushing mechanism 20 , and the clamp pushing mechanism 20 is arranged on the cell clamp 10 The rear of the battery cell holder 10 is used to push the battery cell 50 forward; the pressing mechanism 30 is arranged above the battery cell holder 10 and is used to push the battery cell 50 on the battery cell holder 10 downward; The jacking mechanism 40 is arranged below the cell clamp 10, and is used to withstand the cell clamp 10 when the pressing mechanism 30 pushes the cell clamp 10 downward, so as to prevent the position of the cell clamp 10 from shifting. The lifting mechanism 40 includes a push cylinder 42 and a cylinder holder 41 with the telescopic rod facing upward.

As shown in FIG. 2 , the cell fixture 10 includes a fixture bottom plate 17 , a tray base 11 , a cell pressing plate 16 and a cell tray 12 , and the tray base 11 is movably mounted on the fixture bottom plate 17 through a plurality of guide rods 18 . A buffer spring 19 is interposed between the tray base 11 and the fixture bottom plate 17, so that the tray base 11 has a space to move downward, the cell tray 12 is movable on the tray base 11, and the cell pressing plate 16 It is arranged above the cell tray 12 .

The rear end of the cell tray 12 is provided with a positioning rod 13 , and the upper end of the positioning rod 13 is provided with a positioning hole 131 opening upward. The positioning rod 13 is provided with positioning slopes 132 on both sides of the positioning hole 131 . In order to prevent the battery cell 50 from shifting during the transfer process, the tray base 11 is also provided with a tray clamp for fixing the battery tray 12. block 14, the two clamping blocks 14 are rotated and installed on the tray base 11 through the mounting column 111 arranged on the tray base 11, and the tray base 11 is equipped with a device to promote the two clamping blocks 14 to always have the front ends to maintain the clamping position Rod 13, the reset mechanism that keeps the trend of opening at the rear end, and the rear ends of the two clamping blocks 14 are provided with follower bearings 141 . The tray base 11 is also provided with a pressing plate mounting frame 15 for installing the cell pressing plate 16, the pressing plate mounting frame 15 is fixedly installed on the rear end of the tray base 11, and the pressing plate mounting frame 15 is provided with a 12, the pressure swing rod 151 protruding above and the tension spring 152 that makes the pressure swing rod 151 have a tendency to press down. The cell press plate 16 is installed on the free end of the pressure swing rod 151. When in use, the cell press plate The lower surface of 16 is against the upper surface of the battery cell 50 on the battery tray 12 .

As shown in Figure 3, the clamp pushing mechanism 20 includes a pushing base 21, a pushing base 24, and a pushing cylinder 25 and a pushing piece 26 arranged on the pushing base 24, and the pushing base 21 is provided with a longitudinally extending The first slide rail 23, the push base 24 is arranged on the first slide rail 23, and can be driven to move up and down along the first slide rail 23 by the lifting cylinder 22 arranged on the push base 21, and the push base 24 is provided with There is a second slide rail extending toward the cell holder 10 , the pushing member 26 is slidably disposed on the second slide rail, and can be driven by the push cylinder 25 to move along the second slide rail. The bottom of the front end of the push member 26 is provided with a V-shaped positioning groove 262 adapted to the positioning slopes 132 on both sides of the positioning rod 13. The positioning pin 261 is provided, and the size of the positioning pin 261 is adapted to the positioning hole 131 on the positioning rod 13 . A locking block 241 for opening the tray clamp is also provided below the pushing base 24 , the locking block 241 has a locking slot 242 with an opening facing downward, and the opening of the locking slot 242 gradually increases from top to bottom.

The press-down mechanism 30 includes a press-down bracket, the upper end of the press-down bracket is provided with a support arm 31 protruding above the battery tray 12, and the free end of the support arm 31 is provided with a telescopic rod extending downward. Press down the cylinder 32, the free end of the telescopic rod of the press down cylinder 32 is provided with a buffer ring 33. In this embodiment, the press-down cylinder 32 is located above the pressure swing rod 151. During operation, the telescopic rod of the press-down cylinder 32 stretches out downwards against the pressure swing rod 151, and the pressure swing rod 151 drives the electric core The pressing plate 16 presses on the battery cells on the battery cell tray 12 and moves the battery cells and the battery cell tray 12 downward. In the present invention, the press-down bracket is the aforementioned pushing base 21 .

As shown in Figures 1-4, during work, the lifting cylinder 22 drives the push base 24 to move downward, and drives the push cylinder 25 and the push piece 26 on the push base 24 to move downward, and the positioning pin 261 positioned at the front end of the push piece 26 First insert it into the positioning hole 131 of the positioning rod 13, and then the push piece 26 is engaged with the positioning groove 262 below the front end and the positioning slope 132 to engage with the upper end of the positioning rod 13, and at the same time, push the slot 242 of the clamping block 241 below the base 24 Clamped on the outside of the two follower bearings 141, and squeezed downward to open the tray clamp, then, the push cylinder 25 drives the push piece 26 to move forward, and the push piece 26 pushes the battery tray 12 to move forward, and then set it on the clamp The push cylinder below the bottom plate 17 presses upward against the clamp bottom plate 17, and the press cylinder 32 in the press mechanism 30 presses down the pressure swing rod 151, and the cell pressure plate 16 on the pressure swing rod 151 presses on the cell tray 12 on the batteries, so that the batteries and the battery tray 12 move down. When the work is completed and needs to be returned, the pressing cylinder 32 in the pressing mechanism 30 retracts, the cell clamp 10 moves upward, the push cylinder 25 drives the cell clamp 10 to retreat through the push piece 26, and the lifting cylinder 22 drives the push The base 24 moves upwards, the push piece 26 is released from the connection with the positioning rod 13 , and the locking block 241 releases the extrusion of the follower bearing 141 on the clamping block 14 , so that the clamping block 14 clamps the positioning rod 13 again.

As shown in Figure 5, an automatic welding machine for power battery cells includes an ultrasonic welding machine 60 and a turntable 70, the ultrasonic welding machine 60 is fixed on the outside of the turntable 70, and the aforementioned turntable 70 is provided with the aforementioned cell fixture push device. Thus, when the electric core is ultrasonically welded, it is not necessary to move the welding seat 61 of the ultrasonic welding machine 60, but only the clamp pushing mechanism 20 is required to push the electric core clamp 10 to the welding seat 61, and the pressing mechanism 30 pushes the electric core Press the lower welding head 62 on the welding seat 61 to complete the welding on the lower side of the cell cover plate 51, and at the same time, the upper welding head 63 of the ultrasonic welding machine 60 moves downward to complete the welding on the upper side of the cell cover plate 51. of welding. Thereby, the production efficiency of the battery is improved, and the production cost of the enterprise is reduced.

The above are only preferred embodiments of the present invention, and are not intended to limit the present invention, so any modifications, equivalent replacements, improvements, etc. made to the above embodiments according to the technology of the present invention still belong to the present invention within the scope of the technical program.

Claims (9)

1. A cell clamp pushing device, characterized in that: it comprises a cell clamp and a clamp pushing mechanism, and the clamp pushing mechanism includes a push base and a push cylinder and a push piece arranged on the push base, and the push piece is movable. On the push base, and can be driven by the push cylinder, the cell fixture includes a cell tray and a tray base. There is a positioning rod matched with the push piece, and the pallet base is provided with a pallet clamp for fixing the cell tray, and the pallet clamp includes two clamping blocks arranged on both sides of the positioning rod, and the pallet base is provided with a The two clamping blocks always have a reset mechanism whose front end keeps clamping the positioning rod and the rear end keeps opening; a block for opening the pallet clamp is provided under the push base, and the block has a card with the opening facing downward. slot, and the opening of the slot gradually increases from top to bottom, and the rear ends of the two clamping blocks are equipped with follower bearings; when working, the block moves downward with the push base, and the two sides of the slot The walls are respectively clamped on the outer sides of the two follower bearings, and the rear ends of the two clamping blocks are closed and the front ends are opened. 2. The cell holder pushing device according to claim 1, wherein the pushing mechanism further comprises a pushing base, the pushing base is provided with a longitudinally extending first slide rail, and the pushing base is provided with on the first slide rail, and can be driven by the lift cylinder on the push base to move up and down along the first slide rail. The push base is provided with a second slide rail extending laterally. on the second slide rail, and can be driven by the push cylinder to move along the second slide rail. 3. The cell fixture pushing device according to claim 2, characterized in that: the upper end of the positioning rod is provided with a positioning hole opening upward, and the front end of the pushing piece is provided with a positioning pin corresponding to the positioning hole, When working, the push piece is driven by the push base to move downward, and the positioning pin is inserted into the positioning hole. 4. The cell fixture pushing device according to claim 3, wherein a V-shaped positioning groove with an opening facing downward is provided under the front end of the pushing piece, and the positioning pin is arranged at the bottom of the positioning groove and faces toward The positioning rod is located on both sides of the positioning hole, and a positioning slope corresponding to the positioning groove is provided. When working, the push piece moves downward with the pushing base, and is snapped on the positioning rod through the positioning groove and the positioning slope. On the upper end, the positioning pin is inserted in the positioning hole. 5. The cell fixture pushing device according to claim 4, characterized in that: the cell fixture also includes a cell press plate and a press plate installation frame, the press plate installation frame is fixedly installed on the tray base, and the press plate is installed The frame is provided with a pressure pendulum protruding toward the top of the cell tray and a tension spring that urges the pressure pendulum to have a downward tendency. The cell pressure plate is installed on the free end of the pressure pendulum, and the lower surface is against The upper surface of the cells on the cell tray. 6. The cell fixture pushing device according to claim 5, characterized in that: it also includes a press-down mechanism, the press-down mechanism includes a press-down bracket, and the upper end of the press-down bracket is provided with a Extended support arm, the free end of the support arm is provided with a downward pressure cylinder with a telescopic rod stretching out direction, and during work, the battery tray is pushed and moved downward by the downward pressure cylinder. 7. The cell fixture pushing device according to claim 6, characterized in that: the press-down cylinder is located above the pressure swing rod, and during welding, the telescopic rod of the press-down cylinder stretches out downwards against the pressure swing On the rod, the pressure swing rod drives the cell pressure plate to press on the cell on the cell tray, and moves the cell and the cell tray downward. 8. The cell fixture pushing device according to claim 7, characterized in that: the cell fixture also includes a fixture bottom plate, the tray base is movably mounted on the fixture bottom plate through a plurality of guide rods, and the tray base and A buffer spring is sandwiched between the bottom plates of the fixture, and a jacking mechanism is provided below the bottom plate of the fixture, and the jacking mechanism includes a push cylinder with a telescopic rod facing upward. 9. An automatic welding machine for power battery cells, characterized in that it includes an ultrasonic welding machine and a turntable, the ultrasonic welding machine is fixed on the outside of the turntable, and the turntable is provided with any one of the preceding claims 1-8. The described cell clamp pushing device.