1252 results about "Button battery" patented technology

A button cell includes: an electrode assembly including a first electrode, a second electrode, and a separator; a case connected to the first electrode, accommodating the electrode assembly, and having an opening exposing the electrode assembly; a cap plate connected to the case to cover an outer boundary region of the opening, and having a penetration hole exposing a central region of the opening; a terminal plate connected to the second electrode, insulated from and bonded to the cap plate, and including a protrusion plate protruding from a rear surface of a main plate in a direction toward the electrode assembly, the main plate covering the penetration hole; and a bonding layer between and insulating the cap plate and the main plate. A front surface of the main plate and a front surface of the cap plate are located at the same plane as each other.

The invention relates to the technical field of batteries, in particular to a negative electrode performance evaluation method which comprises the following steps: S1, preparing a button cell by taking hard carbon as a negative electrode active material; s2, performing a first charge and discharge test on the button cell in a voltage interval of 0-1.5 V to obtain a first discharge specific capacity A1; carrying out a second charge and discharge test in a voltage interval of 0V-0.8 V to obtain a second discharge specific capacity A2; carrying out a third charge and discharge test in a voltage interval of 0.05-0.8 V to obtain a third discharge specific capacity A3; and carrying out a fourth charge and discharge test in a voltage interval of-0.005 V to 1.5 V to obtain a fourth discharge specific capacity A4. According to the evaluation method provided by the invention, the dynamic performance of the hard carbon negative electrode can be quickly judged, necessary support data is provided for full battery application, and different types of hard carbon can be quickly screened.

The invention discloses a button cell bitter agent and a coating method thereof, and relates to the technical field of button cells. The button cell bitter agent comprises the following components in parts by weight: water, denatonium benzoate, sodium chloride and an adhesive. According to the button cell bitterness agent and the coating method, a highly effective protective layer with strong bitterness can be formed, and the whole surface of the button cell is uniformly coated without influencing the electrical property of the cell.

A rechargeable battery includes: a case receiving an electrode assembly and including an opening; a cap assembly including a cap plate coupled to the case and covering the opening, and a terminal plate coupled to the cap plate; and a housing covering the cap plate and coupled to the case, and an outer surface of the terminal plate protrudes more than an outer surface of the housing to have a height difference.

A button cell includes an electrode assembly, a first tab, and a second tab. The electrode assembly includes a first electrode plate and a second electrode plate; the first electrode plate and the second electrode plate are stacked and wound in a spiral shape around a central axis. A first current collector of the first electrode plate includes a first starting edge and a first ending edge. A first connection segment of the first tab has a first centerline; a second connection segment of the second tab has a second centerline; viewed from the first direction, a line connecting the first centerline and the central axis is a third virtual line, a line connecting the second centerline and the central axis is a fourth virtual line; an acute angle formed between the third virtual line and the fourth virtual line is α1, where 90°≤α1≤180°.

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 discloses a button cell, which comprises a positive electrode shell, the positive electrode shell comprises a supporting part and a corner part connected to the outer side of the supporting part, the corner part comprises a first turning section and a second turning section, the second turning section is connected between the supporting part and the first turning section, the range of a first curvature radius R1 of the first turning section is 0.5-0.85 mm, and the range of a second curvature radius R1 of the second turning section is 0.5-0.85 mm; the second curvature radius R2 of the second turning section ranges from 0.1 mm to 0.5 mm; the negative electrode shell comprises a covering part and a bent buckling part, the covering part and the supporting part are oppositely arranged, the bent buckling part has a third curvature radius R3, the range of the third curvature radius R3 is 0.1-0.3 mm, and the area, provided with the third curvature radius R3, of the bent buckling part is oppositely arranged with the first turning section; and the sealing sleeve is clamped between the corner part and the bent buckling part so as to realize sealing between the positive pole shell and the negative pole shell. According to the button cell disclosed by the invention, due to parameter setting of R1, R2 and R3, enough sealing performance is achieved between the positive electrode shell and the negative electrode cover, and the condition of liquid leakage after high temperature is avoided.

The present disclosure provides batteries that have a reduced risk or no risk of esophageal or gastrointestinal damage in a conductive aqueous environment, such as when accidentally swallowed. The batteries are, in some embodiments, nominally 9V, 3V or 1.5V coin or button cell-type batteries.

The invention provides a secondary battery and a power utilization device, the secondary battery comprises a positive pole piece, the positive pole piece comprises a positive pole active material layer, the single-side coating weight G1 of the positive pole active material layer is greater than or equal to 360 mg / 1540.25 mm < 2 > and less than or equal to 550 mg / 1540.25 mm < 2 >, and the compaction density rho1 of the positive pole piece is greater than or equal to 2.4 g / cm < 3 > and less than or equal to 2.9 g / cm < 3 >; the positive pole piece meets the following conditions: the positive pole piece and the lithium metal sheet are prepared into a button cell, the button cell is subjected to constant-current discharge to 3.2 V at the rate of 1C, and the obtained discharge gram capacity is C1; carrying out constant-current discharge on the button cell to 2V at the rate of 1C to obtain discharge gram capacity C2; wherein r = C1 / C2, and r is more than or equal to 80% and less than or equal to 98%. The secondary battery provided by the invention still has relatively high power performance under the conditions of thick coating and high pressure density.

The invention discloses a method for evaluating the dynamic performance of a positive electrode active material, which comprises the following steps: preparing the positive electrode active material into a button cell, and charging the button cell; the button cell is subjected to discharging treatment, the discharging treatment comprises first-rate discharging and second-rate discharging, charging treatment is carried out between the first-rate discharging and the second-rate discharging, the discharging rate of the first-rate discharging ranges from 0.05 C to 0.2 C, and the discharging rate of the second-rate discharging ranges from 1 C to 2 C; testing the discharge capacity Q1 of the button cell at a first rate, and testing the discharge capacity Q2 of the button cell at a second rate; and based on the ratio of Q2 to Q1, evaluating the dynamic performance of the positive electrode active material. Therefore, the dynamic performance of different batches of positive electrode active materials with similar particle sizes can be evaluated through a relatively simple method, and the positive electrode active material meeting the required dynamic performance requirement is obtained through screening.

The invention discloses a radial artery compression hemostat, and aims to solve the problems that a current radial artery compression hemostat cannot accurately measure the pressure on a patient in the use process, so that the pain of the patient is easily increased; the technical problem that a screen display device on the hemostat cannot be used normally due to the fact that a button battery cannot be replaced in time due to sudden power failure during use is solved, the hemostat structurally comprises a hemostasis device and a pressurization device, and the hemostasis device comprises a supporting plate, a compression pad and a bandage; the compression pad is fixedly connected to the bottom of the supporting plate, the two ends of the bandage are sleeved with the sleeve buckles at the two ends of the supporting plate, and the pressurizing device comprises a rotary knob and a rotary rod. The hemostat can accurately measure the pressure and relieve the pain of a patient, is greatly helpful for medical treatment, is suitable for patients with little bleeding and massive bleeding, is convenient for popularization of surgery and internal medicine, improves the treatment efficiency, and strives for operation time for doctors.

The invention discloses continuous stamping production equipment for a negative electrode metal gland of a button cell, and relates to the field of button cell processing. The equipment comprises a base and a rack mounted at the top of the base, a punch forming mechanism is arranged at the bottom in the rack, and a blank feeding mechanism is arranged in the rack. According to the equipment, the punch forming mechanism is arranged, in the first stage, after an upper shearing die and a lower shearing die are used for shearing a workpiece, upward-warping burrs are formed on an outer edge opening of the workpiece, in the second stage, the middle of the outer edge of the workpiece is bent upwards through a first shaping die and a first lower shaping die, and at the moment, the burrs face inwards; in the third stage, the outer edge opening is finally formed and trimmed through the second lower trimming die of the shaping base, meanwhile, the upward sunken degree of the middle of the workpiece is gradually increased through the three stages, and therefore the workpiece with the burrs turned inwards is machined, and an insulating layer can be prevented from being punctured during button cell assembling; therefore, the yield and the processing efficiency of the battery cathode cover are improved, and the production cost is reduced.

The utility model provides a button cell, and the button cell comprises a first housing assembly which comprises a first substrate, a first annular wall and a sealing member, the first annular wall is arranged at the periphery of the first substrate in a surrounding manner, the first annular wall and the first substrate form an accommodating cavity, and at least a part of the sealing member is located at one side, deviating from the accommodating cavity, of the first annular wall; the second shell comprises a second base plate and a second annular wall, the second base plate is used for covering and sealing the containing cavity, the second annular wall is connected to the periphery of the second base plate, the second annular wall comprises a lap joint end, and the lap joint end extends along the side away from the second base plate and is used for forming a sealing structure with the sealing piece and the first annular wall; the second sealing part comprises a first end close to the first base plate, the first end is provided with a first inclined face, and the first inclined face is obliquely arranged relative to the first annular wall. According to the button cell provided by the embodiment of the invention, the problem that the negative electrode cover is easy to bend when the existing button cell is assembled can be solved.

Systems, methods, and computer-readable media are disclosed for capacitive touch sensing using system-in-package components and batteries. In one embodiment, a device may include a flexible printed circuit, a button cell electrically coupled to the flexible printed circuit, and a system-in-package that is electrically coupled to the flexible printed circuit. The system-in-package may include an electromagnetic interference shield, and a capacitive touch sensor. The capacitive touch sensor may be configured to detect a change in capacitance via a change in electric field at the electromagnetic interference shield.

The utility model discloses a button cell tuyere tablet press which comprises a tablet press body, a material box is fixed on one side of the tablet press body, a discharging plate is fixed in the material box, a sliding plate is arranged at the top end of the discharging plate in a sliding mode, and first sliding blocks are fixed at the two ends of the sliding plate. The button cells are taken out and placed on the discharging plate in the material box, then the adjusting assembly moves to drive the adjusting plate to move up and down, the adjusting plate drives the horizontal plate to move up and down, the distance between the horizontal plate and the discharging plate is adjusted, and meanwhile the pointer and the measuring scale are matched to measure the distance so that the distance can be consistent with the standard production size of the button cells. And then the driving assembly moves to drive the horizontal plate to move, the horizontal plate moves to push away the button batteries with large thicknesses, then the button batteries can be screened, the situation that the thickness of pressing pieces of the button batteries is large, and consequently the button batteries do not meet the production requirement is avoided, and the production quality of the button batteries is improved.

The utility model provides a button cell. The button cell comprises a first shell, a second shell, a diaphragm and a second pole piece, the first shell comprises a conducting layer and an insulating layer, a first mounting groove is formed in the middle of the first shell, and the surface of the conducting layer is coated with an active material layer within the range of the first mounting groove; a second mounting groove is formed in the middle of the second shell; the edges of the first shell and the second shell are hermetically connected to form a mounting cavity, at least parts of the first tab and the second tab are exposed out of the mounting cavity, and the diaphragm and the second pole piece are arranged in the mounting cavity. The active material layer is arranged on the surface of the conductive layer of the first shell, so that the problems of non-uniform thickness of the pole piece and falling of the active material layer caused by rolling of the active material layer coated on the pole piece are avoided, the problem of large gram capacity fluctuation is avoided, the gram capacity is more stable, and the battery performance is effectively improved.

The invention provides a positive electrode material and a preparation method thereof, a positive electrode plate, a sodium ion battery and a power utilization device, and belongs to the field of batteries, the positive electrode material comprises an inner core and a carbon-containing coating layer covering at least part of the surface of the inner core, and the inner core contains sodium vanadium fluorophosphate; the positive electrode material is adopted to prepare the button cell, the Nth charge-discharge test is performed on the button cell, and in a discharge curve of the Nth charge-discharge test, the discharge specific capacity is C0, and the total discharge specific capacity of a discharge platform corresponding to the voltage of 3.3-3.4 V is C1, C1 / C0lt; n is an integer greater than or equal to 1; the condition of the Nth charge-discharge test is as follows: at 20-30 DEG C, the button cell is charged to 4.3 V at 0.2 C multiplying power constant current, and then is discharged to 2V at 0.2 C multiplying power constant current. The positive electrode material provided by the invention has relatively high specific discharge capacity and electronic conductivity.

The utility model discloses a button cell which comprises a positive pole shell, the positive pole shell comprises a supporting part and a corner part connected to the outer side of the supporting part, the corner part comprises a first turning section and a second turning section, the second turning section is connected between the supporting part and the first turning section, the range of a first curvature radius R1 of the first turning section is 0.5-0.85 mm, and the range of a second curvature radius R1 of the second turning section is 0.5-0.85 mm. The second curvature radius R2 of the second turning section ranges from 0.1 mm to 0.5 mm; the negative electrode shell comprises a covering part and a bent buckling part, the covering part and the supporting part are oppositely arranged, the bent buckling part has a third curvature radius R3, the range of the third curvature radius R3 is 0.1-0.3 mm, and the area, provided with the third curvature radius R3, of the bent buckling part is oppositely arranged with the first turning section; and the sealing sleeve is clamped between the corner part and the bent buckling part so as to realize sealing between the positive pole shell and the negative pole shell. According to the button cell disclosed by the utility model, due to the parameter setting of the R1, the R2 and the R3, enough sealing performance is realized between the positive pole shell and the negative pole cover, and the condition of liquid leakage after high temperature is avoided.

The utility model relates to the technical field of batteries, in particular to a button battery, which comprises a battery cell body, a battery cell protection plate and an injection molding plastic cover, one end of the battery cell body is provided with a tab, the battery cell protection plate is positioned at one end of the battery cell body, which is provided with the tab, and the battery cell protection plate is connected with the tab; the outer wall of the circumference of the battery cell body is provided with a folding edge formed by folding outwards, and the injection molding rubber cover covers the battery cell protection plate and is connected with the folding edge to form a closed space; and an external hardware block is arranged on the battery cell protection plate and penetrates out of the injection molding rubber cover. Compared with the traditional plastic shell or metal shell, the injection molding has the advantages that the thicknesses of the side wall and the top surface are thinner, the internal space capacity of the battery is larger, and the cost is lower.

The invention relates to the technical field of oil tank truck safety monitoring, in particular to an oil tank truck Iot intelligent lead sealing strip system which comprises a lock assembly and further comprises a steel wire rope detection circuit, a wireless communication module, an NFC encryption label and a power supply module. Each lock assembly comprises a main body shell, a lock shell, a lock cylinder, a spring and steel balls, the two lock assemblies are symmetrically arranged relative to the center line of the main body shell, and the three steel balls of the same structure are arranged on the lock cylinder in the radial direction of the lock cylinder; the steel wire rope detection circuit connects a steel wire rope to the circuit through a resistor, and detects the connection state of the steel wire rope in real time by detecting the voltage change on the steel wire rope; the wireless communication module comprises a master control MCU circuit integrated with a wireless transceiver and a wireless antenna, and is used for uploading the connection state information of the steel wire rope in real time; the NFC encryption tag has a repeated read-write function and can be encrypted; and the power supply module is a disposable button cell. According to the application, the safety of lead seal monitoring of the oil tank truck can be improved.

The utility model relates to the technical field of electric energy meters, and discloses a battery compartment, a battery compartment fixing device and intelligent equipment, and the battery compartment fixing device comprises a fixing part which is provided with two arc-shaped structures which are oppositely arranged at intervals and have the same peripheral contour as a button battery, and the two arc-shaped structures are respectively arranged at two opposite sides of the button battery; and the clamping parts are connected with the fixing part, the number of the clamping parts is two, the two clamping parts are oppositely arranged at an interval, and the two clamping parts are arranged on two opposite surfaces of the button battery. According to the utility model, through the arrangement of the matching structure of the fixing part and the clamping part, the clamping and fixing of the button battery are realized, the battery compartment is of an integrated structure, the manufacturing of two plastic molds is not needed, the structure of the battery compartment is simple, and the volume of the battery compartment is obviously reduced due to the use of the button battery, so that the space utilization rate of the intelligent equipment is improved.

The invention discloses a non-contact low-power-consumption gas stove switch and fire monitoring wireless communication device which comprises a knob switch assembly, the knob switch assembly is located at the switch position of a household gas stove, and a magnet assembly is arranged between the position below the 6 o'clock position of the knob switch assembly and the household gas stove. A battery assembly, an antenna, an MCU, a wireless communication module, a buzzer assembly, a UV ultraviolet sensor assembly, a normally-closed reed switch, a thermopile temperature sensor assembly and a central semicircular hole are installed in the knob switch assembly. According to the non-contact low-power-consumption gas stove switch and fire monitoring wireless communication device, a traditional switch knob is adopted for installation, installation is easy and convenient, cost is low, low-power-consumption wireless communication is achieved, monitoring data can be transmitted in real time, a button cell is adopted for power supply, replacement and maintenance are easy and convenient, power consumption is low, the cell can be used for a long time, and the device is convenient to use. The easy-to-purchase button cell is used for supplying power, and maintenance is easy and convenient.

The utility model belongs to the field of battery storage, and provides a battery storage box which comprises a first cover body, a second cover body, a first storage plate and a first magnetic part, the second cover body can be covered with the first cover body, and when the second cover body is covered with the first cover body, the first storage plate is arranged on the side, facing the second cover body, of the first cover body; the first storage plate is provided with a plurality of first battery grooves used for containing button batteries, and the first magnetic parts are arranged at the bottoms of the first battery grooves and used for adsorbing the button batteries contained in the first battery grooves. When the button battery is contained in the first battery groove, the button battery is attracted to the first magnetic piece, so that the button battery with the size smaller than that of the first battery groove can be stably contained in the first battery groove under the attraction of the first magnetic piece, and therefore the battery containing box can contain button batteries of different sizes; and the universality of the battery storage box is improved.

The invention relates to the technical field of electronics, in particular to a button cell connector and a using method thereof.According to the connector, a PCB is partially hollowed out to form a notch capable of containing a button cell, the thickness space of the PCB can be utilized, a negative electrode elastic piece and a positive electrode elastic piece are symmetrically distributed up and down, a welding pin is welded and fixed to the PCB, and therefore the thickness space of the PCB can be utilized. When the button cell is installed, the button cell enters the notch from the disassembly and assembly opening, the negative elastic piece and the positive elastic piece are matched with the PCB to vertically clamp the button cell, the elastic piece body is connected with the button cell, and when the button cell is disassembled, the button cell can be withdrawn from the notch through the disassembly and assembly opening as long as thrust is applied from the rear end of the button cell and the button cell is pulled out from the front end of the button cell. Therefore, the connector provided by the invention can reduce the space of the whole machine to the greatest extent, is also beneficial to the later maintenance or replacement of the button cell, and is simple in structure and high in safety and stability. The invention also provides a use method of the button cell connector.

The utility model discloses a button cell cleaning machine which comprises a base, a conveying belt is connected to the inner side of the base, a cleaning device is installed at the top of the base, a cleaning disc is connected to the bottom of the cleaning device, a cleaning agent dripping device is installed at the position, close to the cleaning device, of the top of the base, and a cleaning agent box is arranged on the right side of the base. According to the button cell cleaning machine, an air bag is extruded through an extrusion blade disc, air is conveyed into an air ejector to be divided, the divided air is discharged through a plurality of connecting pipes, the discharged air can blow away waste residues generated by cleaning of a cleaning disc, and the cleaning efficiency of the cleaning machine is improved; according to the cleaning machine, the brush is driven to drive the inserting block to slide out of the inserting groove, so that the cleaning disc is detached and replaced, the cleaning disc of the cleaning machine can be rapidly replaced, then through sliding of the sliding block and the sliding groove, direct impact of the brush on a battery shell can be prevented, the risk of battery scratch or damage is reduced, and the protection effect on the battery is improved.

In order to solve the problem that in the prior art, a magnetic field generated by a winding button battery interferes with electric appliances such as a portable electroacoustic device, the invention provides a winding button battery and an electroacoustic device, the winding button battery is composed of a shell, a cover body and a winding core, the shell and the cover body are assembled to form a closed cavity, and the winding core is arranged in the closed cavity. The roll core is arranged in the closed cavity; at least part of the cover body and / or at least part of the shell are / is set as a corrosion-resistant magnetic shielding part; the corrosion-resistant magnetic shielding part is made of a first metal material which is a metal material with the relative magnetic conductivity larger than or equal to 50 and the chromium element larger than 10 wt%. According to the winding button cell provided by the invention, the influence of a magnetic field generated by the winding core on the exterior of the button cell can be greatly reduced while the good corrosion resistance of the shell is ensured, and the increase of the appearance size or the reduction of the internal space of the button cell cannot be caused, so that the winding button cell has remarkable advantages.

The invention discloses a solid-phase diffusion coefficient measurement method based on a single-layer particle electrode, and belongs to the technical field of lithium ion batteries. Comprising the following steps: A1, counting the number of particles on a scanning image through image processing software, and calculating the effective reaction area of active particles and an electrolyte interface; a2, assembling the single-layer particle electrode serving as a positive electrode and a lithium metal negative electrode into a button cell; a3, applying a constant current to the button cell at a first multiplying power within a preset time period to carry out a periodic charge-discharge pulse test; step A4, extracting solid-phase diffusion overpotential according to the speed difference of voltage response in different time periods; and step A5, calculating to obtain the solid-phase diffusion coefficient. The technical scheme has the beneficial effects that the solid-phase diffusion overpotential can be accurately extracted, and the measurement accuracy of the solid-phase diffusion coefficient is improved; the single-layer particle electrode structure is convenient for counting the number of particles in effective reaction, and the influence of electron conduction and liquid-phase ion transmission impedance on measurement is eliminated.

The invention discloses a preparation method of a lithium iron phosphate positive electrode material, and belongs to the technical field of lithium ion batteries. The method comprises the following steps: discharging, disassembling and sorting to obtain a positive plate, a negative plate, a diaphragm, a shell and a current collector, carrying out freeze drying or negative-pressure heating, stirring and drying treatment on the positive plate to obtain waste lithium iron phosphate powder, carrying out ICP analysis on the waste lithium iron phosphate powder, adjusting the molar ratio of lithium to iron to phosphorus to be (1-1.1): 1: 1, adding a carbon source and alcohol, carrying out ball milling, drying, and calcining in a protective atmosphere to obtain the lithium iron phosphate. The lithium iron phosphate positive electrode material is obtained. Compared with a traditional method, the lithium iron phosphate positive electrode material obtained by the method is low in aluminum content and impurity content, and the battery has good electrochemical performance when the lithium iron phosphate positive electrode material is assembled into a button cell to be subjected to a charge-discharge test.

The utility model discloses an anti-swallowing button battery which comprises a battery body, and the battery body is provided with a positive electrode face, a negative electrode face, a radial side wall face and a sealing R-angle transition face. Wherein the outer surface of at least one of the positive electrode surface, the negative electrode surface, the radial side wall surface and the sealing R-angle transition surface is provided with an anti-swallowing film coating belt capable of releasing pungent smell when the anti-swallowing film coating belt is mistakenly swallowed into the mouth. According to the utility model, the anti-swallowing film coating belt does not give out strong pungent smell when the battery is used; once a child eats the battery by mistake, the anti-swallowing film coating belt on the surface of the battery quickly melts under the condition that saliva in the oral cavity is wet, and the anti-swallowing film coating belt releases pungent smell, so that the child feels uncomfortable and spits the battery immediately, and the effects of preventing the child from swallowing the battery and protecting personal safety are achieved.

The utility model discloses a button cell which comprises a shell which comprises a positive pole shell and a negative pole cover, the anode shell is bowl-shaped; the negative electrode cover is in a cover shape and covers the positive electrode shell; the button cell further comprises an isolating membrane which is arranged in the shell and divides the space in the shell into a positive electrode cavity and a negative electrode cavity; the positive electrode cavity is a space defined by the positive electrode shell and the isolating membrane, and the negative electrode cavity is a space defined by the negative electrode cover and the isolating membrane; the positive electrode combined cake is accommodated in the positive electrode cavity; the positive electrode combined cake comprises a battery positive electrode active matter Ag2O; the positive electrode electrofluid is accommodated in the positive electrode cavity; the positive electrode combined cake is infiltrated in the positive electrode electrofluid; and the negative electrode combined material is accommodated in the negative electrode cavity. According to the utility model, the isolating membrane and the sealing ring are arranged to effectively prevent short circuit; and the outer curled edge of the negative electrode cover is wrapped by the sealing ring, and the opening end of the positive electrode shell is inwards folded to press the top of the sealing ring, so that layer-by-layer lamination is realized, and the shell of the battery is firmer, safer and more reliable.