885results about "Primary cells" patented technology

The invention relates to an mounting fixture (1), comprising, within its structure at least one cassette slot (1.1) in which the cassettes are positioned; at least one battery cell slot (1.2) in which the battery cells are positioned; at least one tab pressing part (1.3) providing a bearing for the battery cell lugs; NTC device slot (1.4), which has a recessed structure and protects the NTC device in case of sagging while allowing it to be positioned without damage; tab cutting unit reference part (1.5), preventing short circuit and providing referencing in tab cutting process; insulated surface (1.6), preventing short circuit and providing protection for the mounting fixture (1); and mounting fixture base (1.7) produced using wear-resistant material for increasing sliding on the conveyor on the conveyor contact surface of the mounting fixture (1) in the production line.

The present application relates to a sheet stacking apparatus. The sheet stacking apparatus comprises: a sheet stacking table, which can move in a controlled manner and pass through a plurality of sheet stacking stations; a plurality of feeding devices, wherein each sheet stacking station is correspondingly provided with one feeding device, and each feeding device is configured to provide material sheets; and a plurality of sheet stacking manipulators, wherein each sheet stacking station is provided with one sheet stacking manipulator, and each sheet stacking manipulator is used for grasping material sheets provided by feeding devices at the same sheet stacking station. When the sheet stacking table moves to any sheet stacking station, the sheet stacking manipulator located at the same sheet stacking station together with the sheet stacking table stacks grasped material sheets onto the sheet stacking table.

The invention discloses a tab protection interlayer, a full-tab battery cell and a cylindrical battery with a shell electrode, a non-adhesive area and an adhesive area are arranged on the tab protection interlayer, so that the non-adhesive area is attached to a tab but is not adhered to the tab, and the adhesive area is adhered to a small part of tab root area and is adhered to the end part of a roll core main body at the same time; the probability that the full tab is pulled by the adhesive tape to rebound is reduced to a great extent. When the full tab is kneaded, the interlayer can be pressed towards the center direction of the roll core to form a bending structure, so that the area of an extruded area of the interlayer is reduced, and the interlayer can be adhered to a small part of area of the root part of the tab and an adhesive area on the roll core main body by virtue of the bending structure, so that the roll sleeve and wrinkles are effectively prevented from being extruded by a shell. And the interlayer can also form an elastic sealing ring structure between the shell and the roll core main body, so that the electrolyte is prevented from leaking to the negative electrode end of the cylindrical battery with the positive electrode shell by combining the adhesion sealing effect of the adhesive glue of the interlayer, and the short circuit between the tab and the shell is avoided.

To provide a positive electrode active material with high capacity and good cycle characteristics.SOLUTION: A positive electrode active material exhibits minimal change in crystal structure between the charged and discharged states. For example, a positive electrode active material that has a layered rock-salt crystal structure in the discharged state and a pseudo-spinel crystal structure in the charged state at a high voltage of about 4.6 V exhibits less change in crystal structure and volume between charge and discharge than known positive electrode active materials. When this pseudo-spinel crystal structure is present, diffraction peaks appear at 2θ=19.30±0.20° and 2θ=45.55±0.10° when analyzed by XRD.SELECTED DRAWING: Figure 1

The present invention discloses a method for preparing a high-ionic conductivity cement-based structured electrolyte and the electrolyte, comprising: mixing a polymer solution, cement, and fine sand to obtain a polymer-cement slurry; subjecting the polymer-cement slurry to low-temperature, sealed curing, and then allowing it to stand at room temperature to obtain a cement-based structured electrolyte. The present invention utilizes a controlled phase separation technique to enable elastic phase separation of the polymer network prior to cement hydration. During the hydration process, the cement adaptively forms the backbone of the polymer network, resulting in a good interface between the two, capable of forming continuous, high-conductivity ion channels. The preparation process is simple to operate and highly reproducible.

The utility model provides paired rubberizing pre-welding equipment which comprises a magnetic drive circulation line used for conveying a battery cell jig, and a feeding mechanism, a binding rubber pasting mechanism, an ultrasonic pre-welding mechanism and a discharging mechanism which are sequentially arranged in the conveying direction of the magnetic drive circulation line, and the magnetic drive circulation line is connected with a fixing jig used for placing a battery cell in a sliding mode. Thus, the battery cell is carried into the fixing jig on the magnetic drive circulation line through the feeding mechanism, and then the fixing jig drives the battery cell to move along the magnetic drive circulation line, so that the battery cell sequentially passes through the binding glue pasting mechanism and the ultrasonic pre-welding mechanism, and production and processing of the battery cell are completed step by step; and the carrying frequency of the battery cell can be effectively reduced, and the appearance damage caused by excessive carrying frequency of the battery cell is avoided as much as possible.

The application discloses a kind of double-face rubberizing equipment of battery tab, including backplate, adhesive tape supply line, outlet guide roller, linear slide rail, take tape gas claw, telescopic cylinder, stop gas claw, double-knife gas claw, the backplate is provided with two-way adhesive tape supply line, the adhesive tape supply line converges to a pair of outlet guide roller, the backplate is reversely installed with a pair of linear slide rail with outlet guide roller as origin, the linear slide rail outer end is provided with the take tape gas claw opposite outlet guide roller, the take tape gas claw is pulled by telescopic cylinder being arranged in the inner end of linear slide rail, the outlet guide roller surface is matched with stop gas claw.By the above mode, the application provides a kind of double-face rubberizing equipment of battery tab, since integrating double tiger mouth on take tape gas claw and stop gas claw, therefore can build double-way adhesive tape channel, and the relative position of double-knife gas claw and adhesive tape channel is controlled using perpendicularity correction slider, to accurately and efficiently realize double-face rubberizing process.

The embodiment of the utility model provides an intermediate pitch changing device and battery production equipment, and relates to the technical field of battery production equipment, and the intermediate pitch changing device comprises a support; and the picking assembly comprises a plurality of picking mechanisms connected with the support correspondingly, all the picking mechanisms can move in the first direction relative to the support, and each picking mechanism is used for independently picking workpieces. In the embodiment of the invention, when each picking mechanism picks up the workpieces on the previous conveying line, the distance between the picking mechanisms can be correspondingly adjusted so as to pick up the workpieces in batches, and during conveying, the workpieces are separated from one another by adjusting the distance between the picking mechanisms, so that the workpieces can be conveniently conveyed. And when the workpiece moves to the next conveying line, the distance between the picking mechanisms is changed, and the workpiece is placed on the next conveying line. Thus, the conveying interval in the workpiece conveying process is met, meanwhile, the workpieces can be picked up in batches, the feeding and discharging time is shortened, and therefore the production efficiency is improved.

The invention relates to the field of battery lamination machines, in particular to an automatic lamination machine for battery production. A lamination table is mounted on the base plate; a conveying frame for conveying diaphragms to the lamination table is mounted on the base plate; two mounting plates are movably arranged on the base plate; the two mounting plates are respectively distributed on two sides of the lamination table; each mounting plate is provided with a suction cup used for sucking a pole piece. First moving driving pieces are mounted on the two sides of the suction cup correspondingly; a first limiting plate is arranged at the driving end of each first moving driving piece and provided with an arc face. According to the invention, the diaphragm is firstly pressed down by using the cambered surface of the limiting plate I, the pole piece does not contact with the diaphragm in an inclined state, and when the diaphragm is gradually pressed down to a horizontal state by the cambered surface of the limiting plate I, the pole piece contacts and is placed on the diaphragm, so that the pole piece and the diaphragm do not extrude each other; and the diaphragm is not easy to damage when being pressed down by the cambered surface.

The utility model provides a battery cell surface mounting device. The battery cell surface mounting device comprises a bracket, a top plate, a rotary driving mechanism, a rotary plate and a carrying mechanism, the rotating plate is connected to the top plate, and the lower surface of the top plate is provided with a variable-pitch groove. And the carrying mechanism comprises a fixing seat, a first adsorption assembly, a second adsorption assembly and a pitch changing assembly, the fixing seat is connected to the rotating plate, the first adsorption assembly and the second adsorption assembly are both arranged on the fixing seat, and the top of the pitch changing assembly is located in the pitch changing groove and connected with the first adsorption assembly and the second adsorption assembly. The rotation driving mechanism drives the rotation plate to rotate, and the rotation path of the carrying mechanism is provided with a chip taking station and a chip mounting station. In the rotating process of the carrying mechanism, the variable-pitch assembly can drive the first adsorption assembly and the second adsorption assembly to slide towards the two sides to be separated or slide towards the middle to be close. The distance between the first adsorption assembly and the second adsorption assembly is adjusted, and it is ensured that the first adsorption assembly and the second adsorption assembly conduct synchronous mounting on the two spacers.

The utility model belongs to the technical field of battery production, and discloses a clamp system and a battery production line, the clamp system comprises a rack, a clamping unit and a leveling unit, the clamping unit is arranged on the rack and is used for clamping a battery cell; the flattening unit comprises a first flattening piece and a second flattening piece, the first flattening piece and the second flattening piece can be connected to the rack in an opposite or opposite moving manner, and the first flattening piece and the second flattening piece can respectively press the tabs on the two sides of the tabs of the battery cells. In the process of transferring the battery cell by the clamp system, the tab of the battery cell can be leveled through the leveling unit, and the first flattening piece and the second flattening piece of the leveling unit are driven to move in opposite directions, so that the tab between the first flattening piece and the second flattening piece is clamped and flattened, the tab is prevented from being bent, the tab is ensured to be flat and free of wrinkles, and the procedures such as tab welding and the like can be directly carried out subsequently; and a structure for leveling the tabs does not need to be additionally arranged, so that the production cost can be reduced, the production time is saved, and the production efficiency is improved.

The invention discloses a sealed battery box. The sealed battery box comprises a handle, a handle fixing beam, a box body, a front panel and a rear panel, the box body is formed by bending and welding an integrally-formed section through a metal plate, frames are arranged on the two sides of the box body, threaded holes and connecting structures are arranged on the frames, the connecting structures are arranged at the bending positions of the section, each connecting structure comprises a first bending block and a second bending block, the bending blocks are in an arc shape, and the first bending blocks and the second bending blocks are connected through bolts. The thickness of the bending blocks is one half of that of the frame of the box body, the two bending blocks are distributed in a staggered mode, the positions of the two bending blocks are overlapped after bending, the outer circular arcs coincide with the bending circular arc of the box body, and the structure can assist in bending, reduce the welding workload, reduce the welding cost, improve the assembly precision and reduce the assembly error at the same time.

The invention relates to a lithium manganese battery multi-station visual detection system and a lithium manganese battery multi-station visual detection method in the technical field of battery manufacturing and detection, and aims to solve the problems of high missing detection rate and high false detection rate caused by single detection dimension, poor algorithm adaptability and information splitting in existing battery detection. According to the technical scheme, the system is characterized by comprising a multispectral imaging module, a three-dimensional detection unit, an edge calculation node and an execution mechanism, synchronous detection of the electrolyte filling amount, the lithium piece crack and the diaphragm alignment precision is achieved through a multi-modal feature fusion algorithm, and the execution mechanism is linked to conduct automatic liquid supplementing, removing and correcting. The method is mainly used for high-quality detection and automatic control in the lithium-manganese battery production process.

The utility model discloses a shell structure and a battery. The shell structure comprises a shell main body, a pressure relief hole and a sealing element, the shell main body is used for accommodating the battery cell assembly; the pressure relief hole is formed in the shell main body; the sealing piece comprises a connecting piece and hot melt adhesive, the connecting piece is provided with a first through hole, the first through hole is filled with the hot melt adhesive, the sealing piece is connected with the shell body, and the first through hole corresponds to the pressure relief hole in position. Wherein the hole wall of the first through hole protrudes to form a supporting surface and the hot melt adhesive is attached to the supporting surface, and / or the hole wall of the first through hole is sunken to form a supporting surface and the hot melt adhesive is attached to the supporting surface. The shell structure provided by the utility model can simultaneously meet the mechanical drop and hot box test requirements of the battery cell assembly, and can generate a response to thermal runaway in time.

The present application relates to a battery cell hot-pressing device and a battery production apparatus. The battery cell hot-pressing device comprises a first hot-pressing assembly which comprises a first pressing plate and second pressing plates adjacent to the first pressing plate, wherein the first pressing plate and the second pressing plates are aligned to form a first hot-pressing surface so as to press and cover at least part of a first surface of a battery cell, and the first pressing plate and the second pressing plates can alternately ascend and descend relative to a first direction; and a second hot-pressing assembly, arranged opposite to the first hot-pressing assembly in the first direction and comprising a third pressing plate and fourth pressing plates adjacent to the third pressing plate, wherein the third pressing plate and the fourth pressing plates are aligned to form a second hot-pressing surface so as to press and cover at least part of a second surface of the battery cell, and the third pressing plate can ascend and descend in the first direction relative to the fourth pressing plates. The battery cell hot-pressing device of the present application can effectively improve the efficiency of feeding a battery cell to a hot-pressing station for hot-pressing shaping, thereby improving the production efficiency of battery cells.

The utility model relates to a glue filling system of a battery pack, and relates to the technical field of battery manufacturing. The battery pack is provided with a containing cavity, and the glue filling system of the battery pack comprises a temperature regulation and control device and a glue filling device. The temperature regulation and control device is used for regulating and controlling the temperature of the battery pack, the temperature regulation and control device comprises a heat exchange assembly and a temperature control circuit, and the heat exchange assembly can conduct heat with the battery pack; the temperature control circuit is used for controlling the heat exchange temperature of the heat exchange assembly so that the battery pack can reach the preset temperature. The glue pouring device is used for pouring polystyrene foam into the containing cavity. The polystyrene foam can be filled after the battery pack reaches the preset temperature, so that the foaming / curing time of the polystyrene foam can be accurately controlled.

The invention relates to high-speed battery cell side face rubberizing equipment and a rubberizing method thereof, and belongs to the technical field of battery cell rubberizing. The high-speed battery cell side face rubberizing equipment comprises a feeding mechanism, a first-stage transfer mechanism, a second-stage transfer mechanism, a first tearing mechanism, a second tearing mechanism and a material taking mechanism; the first-stage transfer mechanism is matched with the feeding assembly to grab sizing materials, then the first tearing mechanism is matched with the first-stage transfer mechanism to tear off lower release paper, the second-stage transfer mechanism is matched with the first-stage transfer mechanism to transfer, and the second-stage transfer mechanism is matched with the first tearing mechanism to tear off upper release paper. Through the design of a hardware structure and the debugging setting of a PLC program, the action connection among a plurality of mechanisms is tight, the takt is compact, meanwhile, the overall structural layout of the equipment is ingenious, the tearing efficiency of the upper release paper and the lower release paper is greatly improved, the production takt of the whole production line is effectively improved, and the production efficiency of the whole production line is improved. And meanwhile, the tearing precision is effectively improved, and the sizing material feeding quality stability is improved.

The utility model relates to battery module production technical field discloses a kind of battery cell positioning tool, including mounting plate and positioning mechanism, mounting plate is opened and has the extension of the avoidance passage along the direction of battery cell conveying, avoidance passage is used to avoid transfer mechanism, transfer mechanism is used to support and transfer battery cell.Specifically, the process of the battery cell positioning tool adjustment for different models of battery cell is as follows, since the size of different models of battery cell is different, the position of first positioning assembly, second positioning assembly on mounting plate needs to be adjusted correspondingly.Two second positioning assemblies slide in width direction, and two first positioning assemblies slide in length direction, to adjust the position of second positioning assembly and first positioning assembly on mounting plate, to better adapt to battery cell of different sizes, facilitate subsequent processing of battery cell.The distance between two first positioning assemblies and two second positioning assemblies can be adjusted, which can adapt to battery cell of various sizes, and the versatility of the battery cell positioning tool is good.

The utility model relates to a device for guiding and installing a battery cell end cap. The device comprises an end cap feeding piece, an end cap placing table and an end cap, the end cap feeding part comprises a material stringing part, a first guide film and a second guide film, the first guide film and the second guide film are fixed to the discharging end of the material stringing part, and an electrode roll core of the super capacitor monomer is placed between the two guide films; the end cap placing table is provided with a feeding groove, an end cap is placed in the feeding groove, the feeding end of the material stringing piece penetrates through the end cap, and a first limiting hole and a second limiting hole are formed in the feeding end of the material stringing piece; a first positioning pin and a second positioning pin are arranged at the feeding end, corresponding to the material stringing piece, of the end cap mounting table, and a first limiting hole and a second limiting hole are formed in the first positioning pin and the second positioning pin; the end cap penetrates through the material stringing piece, the first guide film and the second guide film and is arranged on the electrode roll core of the super capacitor single body in a sleeving mode. The problems that in the prior art, a diaphragm is damaged in the battery cell end cap installation process, and tabs are difficult to penetrate through are solved, and a safe, reliable and efficient end cap installation mode is provided.

The utility model discloses an aluminum-plastic composite battery module end plate assembly capable of being freely combined. The aluminum-plastic composite battery module end plate assembly comprises two aluminum alloy profile buckling edges, two aluminum alloy profile plates and a plastic profile middle buckling strip, the inner side edges of the aluminum alloy profile plates are clamped in the grooves in the two sides of the buckling strip in the middle of the plastic profile respectively, and the outer side edges of the two aluminum alloy profile plates are clamped with the aluminum alloy profile buckling edges respectively. The cross section of the aluminum alloy profile buckling edge is U-shaped, the cross section of the plastic profile middle buckling strip is I-shaped, and the two sides of the aluminum alloy profile plate are step-shaped. According to the aluminum-plastic composite battery module end plate assembly capable of being freely combined and the manufacturing method, on the premise that the structural strength of the end plate is not reduced, the use amount of aluminum alloy materials is greatly reduced, the product cost is greatly reduced, and the energy absorption characteristic of plastic materials can be utilized to improve the energy absorption performance of the battery module. The battery swelling stress in the use process of the battery module is effectively absorbed, so that the reliability of the battery module is improved.

The present technology relates to a composite material comprising inorganic particles, a fluorinated amide compound and, optionally, an electrolyte polymer, a plasticizer and / or a salt, as well as to the method for preparing the composite material. Also disclosed are the solid electrolytes and electrode materials comprising the present composite material and their use in electrochemical cells and storage batteries containing them.

The utility model discloses a kind of rubber sticking mechanism and its tablet machine, wherein, a kind of rubber sticking mechanism, including base, send glue module, turnover module, rubber sticking module and cutter module being set on base, send glue module includes rotatable glue feeding disc and the open glue over roller group for keeping the tension of glue paper being set in glue feeding disc front side, send glue module is used to clamp and transport the glue paper wound on glue feeding disc to turnover module, cutter module is used to cut off the glue paper between send glue module and turnover module, rubber sticking module pushes and presses the glue paper that turnover module is turned over upwards and sticks on the polar piece of tablet machine.A kind of tablet machine, tablet machine includes rubber sticking mechanism.The utility model can adapt to the glue paper of thickness above 10 microns, and glue paper sticks on polar piece and has good sticking effect, without bubble, not wrinkling.

The utility model provides a jig and a machining system. The jig comprises a base, a first bearing mechanism and a limiting mechanism. The first bearing mechanism and the limiting mechanism are arranged on the base. The first bearing mechanism is provided with a first bearing area and a second bearing area which are at least partially overlapped, the first bearing area is used for bearing sheets, and the second bearing area is used for bearing films; the limiting mechanism comprises a limiting piece, the limiting piece is configured to be movably arranged on the base between a first position and a second position, the first position is the position where the limiting piece corresponds to the second bearing area and is located above the second bearing area, and the second position is the position where the limiting piece and the second bearing area are staggered. According to the jig, the limiting piece is moved to the first position and the second position respectively, so that the limiting piece can limit the membrane material when the membrane material is placed on the second bearing area, the risk that the membrane material flies up to be curled or deviates from a sheet is reduced, the limiting piece can avoid the membrane material in the membrane material taking and placing process, and therefore taking and placing of the membrane material are not affected.

The invention discloses a top cover assembly, a battery and an assembly method of the top cover assembly, the top cover assembly comprises a top cover sheet, a pole and upper plastic, the top cover sheet comprises a first plate body and an enclosing part, the enclosing part and the first plate body are connected to enclose to form a mounting groove, and a first limiting part is arranged in the mounting groove; the enclosing part comprises a first section and a second section, and the second section is of an annular structure with the consistent wall thickness; at least part of the structure of the pole is arranged in the mounting groove, and the pole is provided with a second limiting part; at least part of the structure of the upper plastic is arranged between the pole and the first section, the upper plastic is provided with a third limiting part and a fourth limiting part, the third limiting part is in limiting fit with the first limiting part in the circumferential direction, and the fourth limiting part is in limiting fit with the second limiting part in the circumferential direction. According to the invention, the enclosure part separates a limiting function from a spin riveting processing area through layering, and the second section is kept in an equal-wall-thickness annular structure, so that material accumulation or thinning is avoided during spin riveting processing, and the uniformity of extrusion force distributed along the periphery of the pole is improved, thereby ensuring the sealing performance.

The utility model discloses a clockwise winding mechanism which comprises an installation structure and a winding structure installed on the outer side of the installation structure, an opening and closing air cylinder, a needle threading servo motor and an installation frame are arranged in the installation structure, and the opening and closing air cylinder and the needle threading servo motor are fixedly installed on the outer side of the installation frame. The opening and closing air cylinder and the needle threading servo motor are located at the left end and the right end of the mounting frame correspondingly, a positioning structure is arranged at the end, away from the mounting structure, of the winding structure, and a first follower, a fixing column cam groove and a fixing base are arranged in the positioning structure. According to the clockwise winding mechanism, the winding needle outer needle and the winding needle inner needle in the winding structure rotate clockwise during revolution, so that the gap between the winding needle outer needle and the diaphragm positioning roller and the gap between the winding needle inner needle and the diaphragm positioning roller can be shortened, the contact distance between the diaphragm and the diaphragm positioning roller is shortened, and the vibration amplitude of the diaphragm during rapid rotation is reduced; and the cutting precision of the diaphragm is improved.

The utility model discloses battery core insulation sheet pasting equipment, which comprises a base, a conveying line, an insulation sheet pre-pasting device, an insulation sheet carrying device and a heating device, the conveying line is arranged on the base and is used for conveying battery cells in the conveying direction, and a preheating station, a pre-laminating station and a hot laminating station are arranged on the conveying line at intervals; the insulating sheet pre-laminating device is arranged on the base, is opposite to the pre-laminating station and is used for positioning the battery cell at the pre-laminating station; the insulating sheet carrying device is arranged on the base, is opposite to the pre-laminating station, and clamps an insulating sheet to be laminated on the top of the battery cell on the pre-laminating station; the number of the heating devices is two, and the two heating devices are arranged on the base, are opposite to the preheating station and the hot laminating station respectively, and are used for preheating the tops of the battery cells conveyed to the preheating station or heating insulating sheets which are conveyed to the hot laminating station and are pre-laminated at the tops of the battery cells, so that the viscidity between the insulating sheets and the battery cells is stronger, and the laminating property is better.

The invention provides a single battery, a battery pack and a manufacturing method of the single battery, the single battery comprises a naked battery cell and a switching piece, the naked battery cell comprises a tab stacking part, and the tab stacking part is formed by stacking a plurality of tabs along the stacking direction; the adapter plate is connected with the tab stacking part in a welding manner; tab stacking parts are welded on the surfaces of the two sides of the adapter plate in the stacking direction. According to the invention, the technical problem of poor welding quality stability between the tab and the adapter plate can be improved.

The utility model discloses a bearing tool, battery cell rubberizing equipment and a battery production line, and relates to the technical field of battery processing, the disclosed bearing tool comprises a base, a first bearing part and a second bearing part, the first bearing part is provided with a first bearing surface for bearing gummed paper, and the second bearing part is provided with a second bearing surface for bearing gummed paper; the stacking direction of the multiple pieces of gummed paper on the bearing tool is defined as the first direction, the first bearing part and the second bearing part are slidably connected with the base and can move relative to the base in the first direction, and the gummed paper can be stacked on the bearing tool by adjusting the relative positions of the first bearing face and the second bearing face in the first direction. The two pieces of gummed paper adsorbed by the suction mechanism can be fully bonded on the first bearing surface and the second bearing surface, so that the probability of material throwing failure caused by infirm bonding of the gummed paper on the bearing tool can be reduced, and the battery production efficiency is further improved.

The embodiment of the utility model provides a rubberizing device and a battery production system. The rubberizing device comprises a first rubberizing structure, a second rubberizing structure, a third rubberizing structure and a first driving part. The first rubberizing structure is provided with a first negative pressure hole which is used for adsorbing a rubber material. And the second rubberizing structure is provided with a second negative pressure hole which is used for adsorbing the rubber material. The third rubberizing structure is located between the first rubberizing structure and the second rubberizing structure and is configured to move in the first direction, and the corner, away from the second rubberizing structure, of the third rubberizing structure is provided with a curved surface bent outwards. The first driving part is connected to the third rubberizing structure and used for driving the third rubberizing structure to reciprocate in the second direction so that the curved surface can abut against the rubber material to the non-welded area of the tab, and the second direction intersects with the first direction. The quality of the electrode assembly can be improved.