324results about "Primary cell manufacture" patented technology

The invention discloses a lithium battery processing roundness shaping device and method, and relates to the technical field of lithium battery processing, the lithium battery processing roundness shaping device comprises a positioning frame, and the inner side of the positioning frame is provided with a position adjusting rounding piece connected with a transverse push rod. By arranging the position adjusting and rounding piece and starting the first servo motor, the shortest distance between the edge of the correction roller and the circle center of the supporting plate is adjusted to be equal to the target radius of the battery cell, the telescopic air cylinder is started, the correction roller moves by a certain distance in the direction away from the circle center of the supporting plate, and one-time rounding treatment can be conducted on the battery cell by rotating the correction roller in the same direction; then the telescopic air cylinder drives the movable sleeve plate to move to enable the positioning plate to be attached to the movable sleeve plate again, so that the shortest distance between the correction roller and the circle center of the supporting plate is equal to the target radius of the battery cell, rounding treatment is conducted on the battery cell again through rotation of the correction roller, and therefore part of internal stress of the pole piece and the diaphragm can be released; and material fracture or drape aggravation caused by forced shaping is avoided.

The embodiment of the invention provides an electrode assembly and a manufacturing method and equipment thereof, a battery and a power utilization device, the electrode assembly is used for a battery monomer (100) and comprises a first pole piece (1) and a second pole piece (2) which are opposite in polarity, and each of the first pole piece (1) and the second pole piece (2) comprises a main body part (11) and a tab (12) protruding out of the main body part (11), the first pole piece (1) and the second pole piece (2) are wound around a winding axis (K), so that respective main body parts (11) form a winding main body (S); the end part of the winding main body (S) comprises at least one conductive region (121) and at least one liquid guide region (111), the tab (12) is led out from the conductive region (121), is wound for at least one circle and is used for being electrically connected with a terminal (1022) of a battery monomer (100), and the liquid guide region (111) and the conductive region (121) are arranged adjacently along the radial direction of the winding main body (S) and are used for guiding electrolyte to flow into the winding main body (S).

This invention relates to the field of magnesium primary battery preparation technology, and discloses a magnesium aqueous primary battery system, including a positive electrode, a negative electrode, and an electrolyte. The negative electrode is any one of magnesium metal and magnesium alloy. The positive electrode is made of a positive electrode active material, superconducting carbon, and a first-order gelatinizing agent. The electrolyte is made of magnesium bromide, a corrosion inhibitor, and a second-order gelatinizing agent. The preparation method includes the following steps: S1: preparing a positive electrode slurry; S2: preparing an electrolyte by introducing a corrosion inhibitor into the magnesium bromide electrolyte, followed by adding a second-order gelatinizing agent for gelatinization treatment to obtain a slow-release gelatinized electrolyte; S3: preparing a positive electrode steel shell; S4: assembling the battery. The technical solution of this invention not only slows down the corrosion rate of the negative electrode material and improves the utilization rate of the negative electrode material, but also solves the problems of voltage hysteresis and volume expansion during battery discharge; furthermore, it can match the reaction rates of the positive and negative electrodes.

The invention discloses battery baking production equipment. The battery baking production equipment comprises a battery transferring trolley, a running track, a baking furnace, a feeding conveying belt and a discharging conveying belt; the baking ovens are arranged on the two sides of the running track; a tray inlet and a tray outlet are formed in one end of the battery transfer trolley; the feeding conveying belt is arranged above the baking oven on one side and is in butt joint with the tray inlet. The discharging conveying belt is arranged above the baking oven on the other side and is in butt joint with a tray outlet. The front side and the rear side of the other end of the battery transfer trolley are each provided with a clamp butt joint opening. The battery transfer trolley comprises a frame, and a transfer manipulator, a clamp push-pull device and a tray conveying and positioning device which are arranged on the frame; the frame is provided with a clamp area and a tray area, and the tray conveying and positioning device is arranged in the tray area. The clamp push-pull device is arranged in the clamp area; and the transferring manipulator transfers the battery between the clamp of the clamp push-pull device and the tray of the tray conveying and positioning device. The device is reasonable and compact in structural arrangement and high in production efficiency.

The invention discloses a high-capacity and high-energy-density lithium / carbon fluoride battery and a preparation method thereof, and relates to the technical field of lithium / carbon fluoride batteries. The active carbon with high specific surface is added into the positive electrode slurry, and the porous structure of the active carbon provides more lithium ion transmission channels, so that LiF accumulation is relieved, polarization is reduced, and the discharge capacity and the energy density of the lithium / carbon fluoride battery are improved; and by optimizing the battery process ratio, the prepared lithium / carbon fluoride battery has high thermal conductivity and uniform heat dissipation, the thermal runaway risk is reduced, and the battery safety is improved.

The invention provides battery lamination hot-pressing equipment and a battery lamination hot-pressing method, and relates to the technical field of battery processing. The battery lamination hot-pressing equipment comprises an upper hot-pressing assembly, a lower hot-pressing assembly, a flexible supporting assembly, a jacking assembly and a clamping assembly, the upper hot-pressing assembly and the lower hot-pressing assembly are oppositely arranged up and down; the flexible supporting assembly comprises a flexible layer, and the flexible layer is unfolded above the lower hot pressing assembly; the output end of the jacking assembly is used for ascending and descending to drive the flexible layer above the output end to ascend and descend, and the flexible layer is used for being deformed into a table body structure when the output end of the jacking assembly ascends; the clamping assembly can move to the peripheral side of the table body structure so that the clamped bare battery cell can abut against the top of the table body structure. According to the battery lamination hot-pressing equipment, through mutual cooperation of the clamping assembly, the flexible layer and the jacking assembly, a bare battery cell can be stably transferred to the lower hot-pressing assembly, dislocation between positive and negative pole pieces of the bare battery cell is prevented, and the structural stability of the bare battery cell in the transferring, placing and hot-pressing processes is effectively guaranteed.

The invention discloses lithium battery protective film coating equipment, and belongs to the technical field of lithium battery coating, the lithium battery protective film coating equipment comprises a rack, and further comprises a film unfolding mechanism, a battery coating mechanism and a laminating mechanism, one side of the rack is provided with the film unfolding mechanism for unwinding and spreading a protective film, and the laminating mechanism is provided with a laminating mechanism; a battery wrapping mechanism for wrapping a battery with a film is installed on one side of the machine frame, an attaching mechanism for attaching the side edge of the battery wrapped with the film is installed on the upper side of the machine frame, the film unfolding mechanism comprises an unwinding assembly and an alternate unfolding assembly, the unwinding assembly for auxiliary unwinding of the film is installed on the upper side of the machine frame, and the alternate unfolding assembly is installed on the lower side of the machine frame. The upper side of the rack is provided with an alternate unfolding assembly for alternately unfolding a film. By means of the mode, bubbles can be eliminated while protective films on the upper face, the lower face, the front face and the back face of a battery can be rapidly attached, the protective films on the side wall of the battery can be rapidly further attached to complete battery film coating, and the production efficiency is high.

The invention provides a soft package battery stacking work station which comprises an accessory preparation mechanism used for feeding an end plate and a heat insulation plate; the battery cell preparation mechanism is used for supplying single battery cells, the battery cell preparation mechanism and the accessory preparation structure are adjacently arranged, and a stacking area is defined by the battery cell preparation mechanism and the accessory preparation structure; the battery cell stacking mechanism is arranged in the stacking area and is used for stacking end plates, heat insulation plates and single battery cells to form a battery module; the first transfer mechanism is arranged between the battery cell stacking mechanism and the accessory preparation mechanism and is used for transferring an end plate and a heat insulation plate from the accessory preparation mechanism to the battery cell stacking mechanism; and the second transfer mechanism is arranged between the battery cell stacking mechanism and the battery cell preparation mechanism and is used for transferring the single battery cells from the battery cell preparation mechanism to the battery cell stacking mechanism. The device is compact in structure and beneficial to solving the problem of site limitation.

The invention discloses a battery cell flattening device and a battery cell flattening method.The battery cell flattening device comprises a rack, a flattening unit and a clamping unit, the flattening unit is arranged on the rack and comprises a flattening mechanism, the flattening mechanism is used for flattening the end of a battery cell, the flattening mechanism is provided with a flattening space with an upward opening, and the clamping unit is used for clamping the end of the battery cell; the rubbing space is used for accommodating the end part of the battery cell, the clamping unit is arranged on the rack and comprises a clamping mechanism and an overturning mechanism, the clamping mechanism is positioned above the rubbing mechanism and is used for clamping the battery cell, and the overturning mechanism is connected with the clamping mechanism and is used for driving the clamping mechanism to overturn up and down. According to the battery cell flattening device disclosed by the embodiment of the invention, the battery cell can be always positioned above the flattening mechanism, and the flattened end part in the battery cell can face downwards, so that chippings generated when the end part of the battery cell is flattened fall down under the action of self gravity, and the chippings are prevented from falling off. And the possibility that chippings generated when the end part of the battery cell is kneaded enter the battery cell can be effectively reduced or avoided.

The invention relates to a lamination device, a lamination process and battery processing equipment, the lamination device comprises a rolling mechanism used for rolling a pole piece, the rolling mechanism comprises at least one group of roller assemblies, and a rolling space is formed between the two groups of roller assemblies at intervals; wherein at least one roller assembly in each group of roller assemblies comprises a roller body and a release agent layer, and the release agent layer is arranged on the periphery of the roller body in the direction intersecting with the axial direction of the roller body. According to the roller assembly, the release agent layer is arranged on the periphery of the roller body, when a rolling mechanism is used for carrying out hot-pressing compounding on a pole piece, the release agent layer can isolate release force generated by penetration of pressure-sensitive adhesive molecules on a diaphragm, and the probability that the pressure-sensitive molecules penetrate through the diaphragm and are adhered to the roller assembly is reduced; and the pressure-sensitive adhesive can be more easily stripped from the release agent layer, so that the problem that the adhesive is adhered to the roller assembly is effectively solved, and the positive plate, the diaphragm and the negative plate can be more stably adhered and compounded.

The application relates to the technical field of batteries, and discloses a cylindrical battery and a preparation method of the cylindrical battery. The cylindrical battery comprises a first cylindrical battery cell and a second cylindrical battery cell. The first cylindrical battery cell comprises a first battery cell main body, a first tab and a second tab. The first tab and the second tab with opposite polarities extend from opposite ends of the first battery cell main body along a first direction and a second direction respectively. The first battery cell main body comprises a first center hole. The second cylindrical battery cell comprises a second battery cell main body, a third tab and a fourth tab. The third tab and the fourth tab with opposite polarities extend from opposite ends of the second battery cell main body along the first direction and the second direction respectively. The second battery cell main body comprises a second center hole, and the second cylindrical battery cell is arranged in the first center hole. The first tab and the third tab with opposite polarities are connected, so that the first cylindrical battery cell and the second cylindrical battery cell are connected in series, and the voltage of the cylindrical battery is improved.

The application discloses a battery glue nail separation and exhaust device, which comprises a first positioning support and a second positioning support, a conveying line for driving a restraint tray to transfer between the first positioning support and the second positioning support, a nail pulling mechanism comprising a first gantry arranged above the first positioning support and a mechanical hand arranged on the first gantry and capable of lifting and moving relative to the restraint tray, a protective cover sleeved on the mechanical hand, the protective cover comprising first and second connecting ends at two ends and a cover body, the length of the cover body being capable of being changed in extension and contraction, the first connecting end being further provided with an exhaust port in communication with the internal space of the protective cover, and a suction mechanism comprising a second gantry and a suction device arranged on the second gantry. The device avoids multiple transfers of the battery between different devices, greatly simplifies the process flow, reduces the equipment occupied space, and improves the production efficiency; and the device avoids the impurities from entering the battery, thereby guaranteeing the air tightness and performance stability of the battery.

The application relates to a powder scraping device, a powder scraping treatment system and an adhesive floating degree detection method. The powder scraping device comprises a roller body and a scraper device. The roller body is rotatably arranged around a preset axis, and the roller body is provided with a fitting surface around the preset axis. The scraper device is located on one side in the circumferential direction of the roller body. In the technical scheme of the embodiment of the application, at least a part of the circumferential roller surface of the roller body is used as the fitting surface to lay the workpiece. The fitting surface is not easy to deform and has good flatness, so that the flatness of the workpiece laid on the fitting surface is good. When the scraper device performs the powder scraping operation, the powder scraping thickness is relatively uniform, thereby helping to improve the powder scraping precision of the powder scraping device.

The utility model provides a crimping device, which comprises a base, a sealing cover and a pressurizing part, and is characterized in that the base is used for placing a to-be-pressed piece; the sealing cover is used for being matched with the base, so that a sealed space is formed between the sealing cover and the base during pressing; the pressurizing part is connected with the sealing cover, and the pressurizing part is used for applying pressure to the flexible medium in the sealing space, so that the to-be-pressed and attached part is pressed and attached under the pressure action of the flexible medium. The crimping device can uniformly apply pressure to each position of the to-be-pressed piece, so that the pressurizing uniformity of the to-be-pressed piece is ensured, and the pressing effect and the performance of the battery are improved.

A cylindrical battery includes a battery element, an outer can having a bottomed cylindrical shape with an opening on one side, a sealing body that seals the opening of the outer can, and a welded portion in which the outer can and the sealing body are welded. The outer can houses the battery element, and the welded portion extends in a first direction along a boundary between the outer can and the sealing body. A value obtained by dividing a maximum welding depth from an outermost surface of the welded portion in the first direction by a maximum thickness of a thickness of the outer can and a thickness of the sealing body is 0.4 or more and 1.5 or less.

Discussed is a battery module manufacturing system including a battery module having a cell stack formed by stacking a plurality of battery cells, a module case configured to accommodate the cell stack and a bus bar frame configured to cover an opening at one side of the module case, a fixing frame coupled to one side of the battery module so that the bus bar frame is exposed to the outside, and at least one pressing jig apparatus coupled onto the fixing frame and configured to press electrode leads of the plurality of battery cells so that the electrode leads are welded in close contact with both sides of a bus bar provided to the bus bar frame.

A manufacturing apparatus includes a chamber, a pressure reducing device, and a return pipe. The pressure reducing device is configured to reduce the pressure in the chamber. The return pipe includes a first opening, a conduit, and a second opening. The first opening and the second opening are respectively and independently open to the interior of the chamber. The first opening is connected to an exterior body. The conduit connects the first opening and the second opening. The conduit is configured to once draw gas in the exterior body out of the chamber when the pressure in the chamber is reduced, and return the drawn gas into the chamber.

A method for manufacturing a battery includes conveying a heated bipolar electrode stack in the form of an elongated sheet by a conveyor roller. In the method of the present disclosure, a first electrode active material layer includes a plurality of island portions extending in a conveying direction, and at least one gap extending in the conveying direction is present between the island portions. A temperature drop of the bipolar electrode stack as the bipolar electrode stack passes over the conveyor roller is 30° C. or more. The conveyor roller includes a recess positioned to overlap with the gap or the opposite side of the bipolar electrode stack from the gap such that at least part of the gap or the opposite side of the bipolar electrode stack from the gap does not contact the conveyor roller.

The invention relates to a battery cell tab rubbing control method, device and equipment. The method comprises the following steps: rotating a turntable for bearing a battery cell to a detection station; respectively acquiring side line positions of tabs on two sides of the battery cell at the detection station; calculating two deviation values based on the sideline positions of the tabs on the two sides of the battery cell and respective corresponding preset standard positions; the rotary table rotates to a kneading station; at the rubbing station, based on the two deviation values, target feeding positions used for driving rubbing mechanisms on the two sides of the battery cell are calculated respectively; and controlling the rubbing mechanisms on the two sides of the battery cell to move oppositely according to the respective target feeding positions so as to synchronously perform rubbing operation on the tabs on the two sides of the battery cell. According to the scheme provided by the invention, the problems of virtual pressing and over-position caused by battery cell incoming materials or positioning deviation in the clamp can be solved, and the safety and reliability of the battery are remarkably improved.

The invention discloses a cylindrical battery and a processing method of the cylindrical battery, the cylindrical battery comprises a shell, a roll core and a cover plate assembly, the shell is provided with a cavity with an opening at one end, the roll core is arranged in the cavity, and a positive pole lug and a negative pole lug face the opening end of the cavity; the cover plate assembly comprises a cover cap connected to the opening of the cavity, and a positive pole and a negative pole which are arranged on the cover cap in a penetrating manner, the positive pole partially extends into the cavity and is connected with the positive tab, and the negative pole partially extends into the cavity and is connected with the negative tab. According to the cylindrical battery disclosed by the invention, the pole integrated on the cover cap can be connected with the tab and then is put into the shell, so that the working procedures are reduced, and the production efficiency is improved.

The invention relates to the technical field of button battery production, and particularly discloses an automatic button battery combining machine which comprises a combining mechanism, a positioning mechanism, a negative electrode conveying mechanism, a positive electrode conveying mechanism and a pressurizing mechanism. A first positioning notch is formed in a negative plate limiting groove formed in the adsorption plate, a second positioning notch is formed in a positive plate limiting block arranged on the jacking seat, positioning blocks at the two ends of the positioning mechanism can abut against the two ends of the negative plate and the two ends of the positive plate, and positioning blocks on the side face of the positioning mechanism can abut against one side of the negative plate and one side of the positive plate. The negative electrode conveying mechanism is used for conveying a negative electrode plate into the negative electrode plate limiting groove, the positive electrode conveying mechanism is used for conveying a positive electrode plate to the jacking seat, and the pressurizing mechanism is used for pressing a positive electrode and a negative electrode on the positive electrode plate. According to the automatic button cell combination machine, the assembly precision of button cells can be improved, and the yield of products is increased.

The invention provides battery cell winding equipment. The battery cell winding equipment comprises a winding needle device and a pushing assembly, the winding needle device comprises a winding piece, the winding piece can rotate around the axis of the winding piece, the outer surface of the winding piece is provided with an inwards-sunken groove, and the groove is provided with a stopping face. The movable part is movably arranged in the groove between a first position and a second position, under the condition that the movable part is located at the first position, the first side of the movable part is separated from the abutting surface, and under the condition that the movable part is located at the second position, the first side of the movable part abuts against the abutting surface; the driving assembly is connected with the movable part so as to drive the movable part to move between a first position and a second position; the winding piece comprises two movable half needles, the two movable half needles are oppositely arranged, and the outer surfaces of the movable half needles are arc-shaped surfaces; the material pushing assembly comprises a support and two abutting rollers, and the two abutting rollers are arranged on the support in the circumferential direction of the winding part at intervals and used for abutting the part to be wound against the outer surface of the winding part.

The invention relates to a retractable positioning mandrel which solves the problems that resistance is increased in the moving and picking process of a flow choking ring and the risk of breakage of the flow choking ring exists in an existing device. The device is mainly divided into two parts, wherein one part is a power component consisting of a cylinder bracket (1), a needle-shaped cylinder (2) and a cylinder contact (16); according to the other part, a mandrel body is composed of a base (3), a spring steel wire (4), a connecting stand column (5), a set screw I (6), a limiting disc (7), an outer expansion push piece (8), a screw I (9), an expansion base (10), a conical expansion core (11), a set screw II (12), a screw II (13), a contraction tension spring (14) and a push rod (15). The cylindrical cage-shaped structure formed by the spring steel wires evenly distributed around the circumference is adopted to replace an integral positioning mandrel to serve as a positioning piece of the choke ring, the contact area between the positioning piece and a workpiece can be greatly reduced, resistance during relative movement is reduced, and the reliability of automatic picking of the choke ring can be better improved.

The invention relates to the technical field of new energy battery manufacturing, in particular to a battery dry cell hot-pressing process based on high-frequency heating, which comprises the following steps: S1, placing a cell between an upper template and a lower template; s2, carrying out pre-pressing on the battery cell; s3, correspondingly and electrically connecting the positive and negative electrodes of the battery cell to the middle parts of positive and negative electrifying columns of the variable-frequency power supply; s4, electrically connecting the positive electrode and the negative electrode of the battery cell with the wiring terminal of the detection module respectively; s5, after the battery cell intrinsic parameter static detection is qualified, variable-frequency electric heating is applied to the battery cell through an electrifying column to reach a set temperature T; s6, in the process of electrifying and heating the battery cell, the detection module performs dynamic detection; s7, after the battery cell is heated to a set temperature T, carrying out heat preservation on the battery cell; s8, performing hot pressing on the battery cell; s9, judging the completion of the hot pressing process according to the dynamic detection data of the detection module; and S10, performing NG removal and blanking on the battery cells subjected to hot pressing. The efficiency and the hot-pressing uniformity of the battery cell during hot-pressing processing are obviously improved, and the energy consumption is greatly reduced.

The application relates to the technical field of batteries and discloses a double-terminal battery buckling system and a buckling method, wherein the buckling system comprises a first test plate provided with a first test hole; a second test plate provided with a second test hole; a first battery grabbing assembly used for grabbing a battery; a first driving module used for driving the first battery grabbing assembly to move so that the posture of a first terminal corresponds to the posture of the first test hole; a second driving module used for driving the second test plate to move so that the posture of the second test hole corresponds to the posture of a second terminal; and a third driving module used for driving a battery taking mechanism to move to realize terminal buckling work. In actual work, the posture of the first terminal is first adjusted to correspond to the posture of the first test hole, then the posture of the second test hole is adjusted to correspond to the posture of the second terminal, and then terminal buckling work is carried out. The buckling efficiency is high because only one buckling action is performed in the process.

This invention provides a lithium thionyl chloride primary battery and its preparation method. The lithium thionyl chloride primary battery includes a lithium metal anode, a separator, a cathode, and a thionyl chloride electrolyte; wherein, the surface of the lithium metal anode is coated with a nano-metal coating and / or the thionyl chloride electrolyte includes a phthalocyanine metal complex. In this invention, the nano-metal coating protects the lithium metal anode from corrosion by thionyl chloride, prevents self-discharge during storage or idle periods of intermittent discharge, and promotes lithium-ion migration to the cathode; the phthalocyanine metal complex optimizes the reduction reaction of thionyl chloride, increasing the battery's discharge voltage, while reducing the electrolyte resistance, thus improving the high-current discharge performance of the lithium thionyl chloride primary battery. Therefore, this lithium thionyl chloride primary battery can respond quickly when discharge is needed, and does not experience capacity loss when discharge is not required, thereby increasing the overall discharge capacity of the battery.

The invention provides a preparation method of a cover plate assembly, the cover plate assembly and a battery monomer, and the preparation method of the cover plate assembly comprises the following steps: a preparation step: providing a plate which comprises a first surface and a second surface; the plate is stamped from the first face to the second face to form a boss protruding out of the second face, the boss comprises a boss end face far away from the first face in the thickness direction of the plate, and a through hole is formed in the boss; hole flanging, wherein the edge of the through hole is punched from the end face of the boss to the first face, so that an annular protrusion protruding out of the first face in the thickness direction of the plate is formed; the annular protrusion comprises a protrusion end face away from the first face in the thickness direction of the plate. And a material splitting step: stamping the part, close to the inner wall, of the annular bulge from the bulge end face to the second face so as to form a first fixing part which protrudes out of the second face and is close to the boss end face. According to the preparation method of the cover plate assembly, the cover plate assembly and the battery cell provided by the invention, the safety of the battery cell can be improved.

The invention relates to the technical field of energy storage equipment, in particular to a battery and a manufacturing method, the battery comprises a positive electrode, and raw materials of the positive electrode comprise manganese dioxide, ketjen black, carbon nanotubes and graphene. The weight ratio of the manganese dioxide in the manganese dioxide, the ketjen black, the carbon nano tube and the graphene is 92%-96%. The Ketjen black accounts for 0.5%-2% of the manganese dioxide, the Ketjen black, the carbon nano tube and the graphene by weight. And / or the value range of the weight ratio of the carbon nano tube in the manganese dioxide, the ketjen black, the carbon nano tube and the graphene is 1%-3%. And / or the value range of the weight ratio of the graphene in the manganese dioxide, the ketjen black, the carbon nanotubes and the graphene is 1%-3%. The manufacturing method is used for manufacturing the battery and comprises the following steps: grinding the manganese dioxide, the ketjen black, the carbon nanotubes and the graphene into powder, adding the polytetrafluoroethylene powder, and uniformly stirring to obtain the positive electrode powder.

The utility model relates to the technical field of battery processing, and discloses a device for loading a cylindrical battery into a shell. The cylindrical battery casing device comprises a clamping unit, a bearing unit and a driving unit, wherein the clamping unit comprises two clamping jaws which can be close to or far away from each other; the bearing unit is arranged below the clamping unit, and the bearing unit is provided with a bearing platform; the clamping unit and the bearing unit can move in the direction close to each other. The driving unit is in driving connection with the clamping unit and the bearing unit. According to the utility model, the shell entering is more accurate and labor-saving, the body to be assembled is prevented from being damaged in the shell entering operation process, and the yield is higher.