1230results about "Primary cells" patented technology

The invention provides a thermal compounding device which comprises a bearing platform, a positive plate positioning device is arranged on one side of the top surface of the bearing platform, a temporary storage platform is arranged on one side of the positive plate positioning device, a material taking manipulator is arranged on one side of the temporary storage platform, and a flat pressing thermal compounding device is arranged on one side of the material taking manipulator. An ultrasonic dust removal device is arranged among the cache platform, the material taking manipulator and the flat-pressing thermal compounding device, a temperature and pressure sensor is arranged on one side of the flat-pressing thermal compounding device, a laser photographing and cutting platform is arranged on one side of the temperature and pressure sensor, and a parallel material clamping belt is arranged between the flat-pressing thermal compounding device and the laser photographing and cutting platform; the invention has the beneficial effects that the flat pressing type thermal composite structure that the upper and lower soft flat plates are used for hot-pressing and adhering the upper and lower diaphragms to the front and back surfaces of the positive plate is adopted, so that the defects of pole piece dislocation, material belt distortion, pause pole piece scrapping and the like caused by adopting a double-roller mode in the same row are effectively overcome, and the failure rate of equipment can be effectively reduced; and waste materials are reduced, the cost is saved, and the production efficiency and the yield are improved.

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 button cell assembling equipment, which comprises a feeding device, an electrolyte adding device and a sealing and pressing device, and is characterized in that the feeding device comprises a rotating motor driven by a corresponding first driving mechanism; the charging tray taking mechanism comprises an electromagnet which is in transmission connection with the rotating motor and a magnetic metal piece which is fixedly connected to the charging tray; the button battery material taking mechanism comprises a plurality of suction nozzle mounting assemblies and suction nozzles mounted on the suction nozzle mounting assemblies; the sealing and pressing device comprises a sealing and pressing bottom die assembly; an upper die assembly is sealed and pressed; an air blowing mechanism; and the electrolyte adding device comprises an electrolyte pipetting gun, and the electrolyte pipetting gun is driven by a corresponding fourth driving mechanism. According to the invention, the raw materials for preparation of the button cell can be stacked in sequence in a full-automatic manner, electrolyte is added, and then the stacked raw materials for preparation of the button cell after the electrolyte is added are sealed, pressed and assembled.

The invention belongs to the technical field of battery manufacturing equipment, and particularly relates to a battery cell winding needle device and battery cell winding equipment. The battery core winding needle device comprises a mounting seat and a winding needle, the assembling shell is provided with a first end and a second end, the first end is fixedly mounted on the mounting seat, and the second end is a free end; the at least one group of transmission assemblies are mounted on the assembly shell, each transmission assembly comprises a plurality of transmission components, and the transmission components are arranged around the axis of the assembly shell; and the multiple adsorption shells are connected to the transmission components in a one-to-one correspondence mode, the multiple adsorption shells are combined to form a barrel structure, and the transmission components drive the adsorption shells to move in the direction perpendicular to the axis of the assembly shell so as to enlarge or reduce the outer diameter of the barrel structure. By applying the technical scheme, the problem that in the related technology, when a naked battery cell is wound and formed, the naked battery cell has hoop acting stress on the battery cell winding needle device, so that the naked battery cell is difficult to detach from the battery cell winding needle device is solved.

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.

The utility model provides a battery nitrogen charging and shaping device which comprises a shaping support frame, a nitrogen charging device and a nitrogen charging device, the clamping jaw assembly comprises a first reshaping clamp, a second reshaping clamp and a pressing plate which can move in the X-axis direction, and the clamping end of the first reshaping clamp and the clamping end of the second reshaping clamp are attached and pressed to limit the appearance of the battery; the nitrogen charging lifting assembly comprises a nitrogen unit, a nitrogen charging nozzle and a lifting unit, the nitrogen unit is connected with the nitrogen charging nozzle, and the lifting unit is used for promoting the nitrogen charging nozzle to descend so as to penetrate through the through groove to press the top of the battery and input nitrogen to a liquid injection opening of the battery; a first X-axis moving assembly; a second X-axis moving assembly; the battery can be positioned and shaped through the clamping jaw assembly, the concave part of the battery is raised by filling inert gas into the liquid injection port of the battery, and the battery is shaped into a set qualified specification shape, so that the size of a battery product meets the process regulation requirement, and the reject ratio of the product is reduced.

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 invention relates to an aluminum alloy material, an aluminum alloy structural part, a preparation method of the aluminum alloy structural part, a battery box body, a battery system, a power utilization device and application. The aluminum alloy material comprises the following composition elements in percentage by mass: 6%-11% of Si, 0.5%-0.9% of Cu, 0.1%-0.4% of Ti, 0.2%-0.6% of Mg, 0.25%-0.6% of Zn, 0.5%-1.1% of Mn, 0.01%-0.05% of Sr, a matrix element Al and inevitable impurity elements, the aluminum alloy material comprises or does not comprise an Al2Cu phase, and the mass fraction of the Al2Cu phase in the aluminum alloy material can be smaller than or equal to 1.3%. The aluminum alloy material has good mechanical properties and excellent corrosion resistance, can be used as a main body material of the battery box body, and is beneficial to prolonging the service life of the battery box body.

The utility model discloses a pole piece roll-in device and battery cell winding equipment, and the pole piece roll-in device comprises a deviation rectifying assembly which comprises a deviation rectifying roller; the material supporting assembly comprises a supporting plate, the supporting plate is provided with at least two limiting parts and an avoiding part located between the at least two limiting parts, and the limiting parts are used for bearing pole pieces; in the conveying direction of the pole piece, at least one part of the supporting plate can move to the downstream of the deviation rectifying roller from the upstream of the deviation rectifying roller, and the deviation rectifying roller clamps the pole piece through the receding part. According to the invention, the pole piece can be prevented from impacting other mechanisms and being damaged due to free swinging.

According to the automatic jet printing system and method for the battery insulating film, in the jet printing system, the magnetic suspension track is adopted for transporting the to-be-processed battery, so that the transportation efficiency of materials can be effectively improved; through rapid transportation of the magnetic suspension track and mutual cooperation of the surface texturing area, the cleaning area and the surface jet printing area in the battery processing area, the processing efficiency of the battery can be greatly improved, the transportation of the battery in each battery processing area is more stable, and the yield of the battery is higher. In the jet printing method, the model labels of the to-be-processed batteries and the corresponding battery processing parameters are flexibly set, so that the transportation capacity of the battery transportation module and the automatic mutual matching capacity of the battery processing area are improved, and the jet printing method can be suitable for mixed line production of different models of batteries and has relatively high flexibility; and the automation level in the battery production and processing process is effectively improved.

The utility model relates to the technical field of battery production and processing, in particular to an assembling machine for battery processing. Comprising an assembling machine and a forming machine. The assembling machine comprises a disc clamping device, a rubber plug feeding device, a shell feeding device, a pressing device and a transferring device. The disc clamping device comprises a first rotating disc, a guide piece and a clamping assembly, the first rotating disc rotates relative to the guide piece, and the clamping assembly is arranged on the first rotating disc; the rubber plug feeding device, the shell feeding device, the pressing device and the transferring device are sequentially arranged around the first rotating disc, the clamping assembly is used for bearing rubber plugs from the rubber plug feeding device and shells from the shell feeding device, and the clamping assembly abuts against the guiding piece so that the central axis of the rubber plugs can coincide with the central axis of the shells. The pressing device presses an external rubber plug into the shell to form a battery semi-finished product, the transfer device transfers the battery semi-finished product to the forming machine, and the forming machine performs girdling and sealing on the battery semi-finished product; the production automation degree is improved, and the production efficiency and the machining precision are improved.

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 utility model provides spray drying equipment and a battery production system.The spray drying equipment comprises a drying tower, a double-fluid nozzle, an ultrasonic generator and a drying device, a containing cavity is formed in the drying tower, the double-fluid nozzle is connected to the drying tower, and the double-fluid nozzle is used for atomizing fluid materials through compressed gas and spraying the fluid materials into the containing cavity; the ultrasonic generator is arranged at a nozzle opening of the double-fluid nozzle, and the drying device is used for introducing dry gas into the containing cavity so as to dry the fluid materials into powder. In the structure, the ultrasonic generator is arranged at the nozzle of the double-fluid nozzle for spraying the atomized fluid material into the accommodating cavity, so that the particle size of fog drops can be further reduced, the particle size of prepared powder is relatively small, and residual materials at the nozzle of the double-fluid nozzle can be removed, so that the double-fluid nozzle can spray smoothly; the process of preparing the powder is stable, and the quality of the prepared material is improved.

The utility model discloses a battery assembly device and a battery production system. The battery assembly device comprises an assembly unit. The assembling unit comprises a bearing mechanism, a cold plate positioning mechanism, a module positioning mechanism and a first pushing mechanism. The bearing mechanism is configured to place the first cold plate and the battery cell module; the cold plate positioning mechanism is configured to position the first cold plate placed on the bearing mechanism; the module positioning mechanism is configured to position the battery cell module placed on the bearing mechanism; the first pushing mechanism is configured to drive the battery cell module placed on the bearing mechanism to move in the first direction, so that the battery cell module can be close to and abut against the first cold plate. According to the technical scheme, the assembling precision of the battery device can be improved.

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 provides a multi-station stamping device for battery shell machining, and relates to the technical field of stamping devices, the multi-station stamping device comprises a workbench, and a sliding groove is formed in the surface of the workbench. According to the battery case stamping equipment, by arranging the structures of the workbench, the sliding groove, the lead screw, the first hand wheel, the movable frame, the limiting block, the annular plate, a limiting groove, a first rack, a first gear, a belt wheel and a first belt, when the equipment needs to stamp a battery case, the multiple structures of the annular plate, the first gear and the first rack are arranged to move in a matched mode, and the horizontal position and angle of the stamping assembly can be flexibly adjusted; therefore, the stamping operation can be performed on the battery shell at multiple angles. When the battery shells with different specifications or shapes are processed, the die or equipment does not need to be frequently replaced, so that the production cost can be effectively reduced, and the production efficiency of the equipment is effectively improved. Moreover, by accurately adjusting the stamping position and angle, the dimensional accuracy of the stamped battery case can be guaranteed, and the rejection rate after stamping is effectively reduced.

The invention relates to the technical field of batteries, and discloses a battery, a battery pack and a preparation method of the battery, and the battery comprises a pole group, a first packaging film and a second packaging film; the first packaging film is provided with a containing groove used for installing the pole group, and the pole group is arranged in the containing groove; the second packaging film is arranged opposite to the first packaging film, and a hot melting area surrounding the periphery of the accommodating groove is reserved between the second packaging film and the first packaging film; the hot melting areas of the first packaging film and the second packaging film are respectively provided with a plurality of rows of embossments, the plurality of rows of embossments are arranged around the periphery of the pole group, the distance L1 between the adjacent embossments in the width direction of the battery is more than or equal to 0.1 mm and less than or equal to 3mm, and the distance L2 between the adjacent embossments in the length direction of the battery is more than or equal to 0.1 mm and less than or equal to 3mm. The multiple rows of knurls are arranged in the hot melting area, and the distance between every two adjacent knurls is limited, so that the hot melting uniformity of the hot melting layer can be improved, the sealing effect is improved, and the service life of the hot melting pressing head is prolonged.

The present invention relates to the technical field of battery debinding agents, and particularly relates to a debinding agent for new energy batteries and a preparation method thereof. The present invention prepares a debinding agent for new energy batteries with a relatively fast debinding rate by compounding a bio-based composite, polyacrylic acid, a cellulose mixture, a surfactant, a solvent and an antioxidant. Among them, the carboxyl groups in the polyacrylic acid molecules interact with the charges on the surface of the colloidal particles, which can weaken the interaction between the colloidal particles and promote the aggregation of the colloidal particles; the bio-based composite and the cellulose mixture molecules contain active groups such as carboxyl groups and hydroxyl groups, which can break the chemical bonds in the adhesive, reduce the adhesiveness of the adhesive, and form intermolecular hydrogen bonds and van der Waals forces, enhance the interaction force, and improve the structural stability of the debinding agent; the raw materials used in the present invention are easily available, and have good compatibility and biodegradability, with environmental benefits. Compared with the prior art, it has a broad application prospect.

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.

An automatic insulating film pasting device for a stainless steel band comprises a machine frame, and an electric control device is arranged on the machine frame. A tool groove is formed in the tool bracket; the product moving mechanism can grab the stainless steel band in the tool groove and move the stainless steel band; the first film feeding mechanism is used for providing a first insulating film base band; the second film feeding mechanism is used for providing a second insulating film base band; the turnover mechanism grabs the stainless steel band in the tool groove and turns over the stainless steel band; the first moving and attaching mechanism is used for picking up the insulating film body and attaching the insulating film body to the front face of the stainless steel band; and the second moving and attaching mechanism is used for picking up the insulating film body and attaching the insulating film body to the back surface of the stainless steel band. The functions of automatic insulation film feeding, insulation film attaching, stainless steel band shifting, stainless steel band overturning and the like are achieved, the automation degree is high, the product consistency is good, the defective rate is low, and the labor load is greatly reduced.

The present invention relates to the technical field of batteries, and discloses an explosion-proof valve, a battery and a processing method of the explosion-proof valve. The explosion-proof valve includes: an explosion-proof valve body adapted to be arranged on the outer shell of the battery; a thinning area surrounding the circumference of the explosion-proof valve body, and the thickness of the thinning area is smaller than that of the explosion-proof valve body; a bursting rib arranged in the thinning area, and the thickness of the bursting rib is smaller than that of the thinning area, and the bursting rib is adapted to break at a preset pressure value; a plurality of pits spaced from each other and spaced from the bursting rib in the thinning area to reduce the stress in the thinning area. When the gas pressure value in the battery reaches the preset pressure value, the bursting rib first breaks to form an exhaust channel, facilitating the discharge of the high-pressure gas inside the battery; the pits in the thinning area can destroy the crystal phase structure on the surface of the thinning area, thereby eliminating part of the stress, solving the problem of large stress during the forming process of the explosion-proof valve, and preventing the structure from deforming or breaking.

The utility model belongs to the technical field of battery production, and particularly relates to a battery hot-pressing device which comprises a heat preservation frame, a hot-pressing device and a hot-pressing device, the plurality of hot pressing plates are correspondingly mounted in the accommodating areas; the plurality of heating plates are correspondingly mounted in the accommodating areas and are positioned below the hot pressing plate; wherein the plurality of heating plates are used for realizing different heating temperatures; the battery hot-pressing device has the beneficial effects that the partition heating of the battery hot-pressing device can be realized, the hot-pressing plates in different accommodating areas are heated according to the size of a battery cell needing to be subjected to hot-pressing processing, and the energy consumption is reduced by reducing the heating area, so that the effects of saving the cost and improving the economic benefit are achieved. In addition, the heat insulation plates are arranged to separate the accommodating areas, so that the heat loss in the accommodating areas can be effectively prevented, and the temperature rise in the battery cell is accelerated.

The battery cell folding and forming jig comprises a bearing table, the upper surface of the bearing table is used for bearing a battery cell; the positioning block is located on one side of the bearing table; the forming assembly comprises an edge folding block and a rolling part, the edge folding block is installed on the side, opposite to the positioning block, of the bearing table, the top face of the edge folding block protrudes out of the upper surface of the bearing table, the top face of the edge folding block bears the sealing edge of the battery cell, and the rolling part moves relative to the side face of the edge folding block so as to roll the sealing edge; the positioning block, the bearing table and the edge folding block define a containing space used for containing a battery cell, the positioning block abuts against one side wall of the battery cell, and the edge folding block abuts against the other side wall of the battery cell so that edge folding forming can be conducted on the sealing edge. The battery cell flanging and forming jig can reliably perform flanging and forming on the sealing edge of the battery cell, and the forming effect and the production efficiency are improved.