864 results about "Button battery" patented technology

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 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 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.

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 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 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 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.

The invention relates to the field of organic polymer synthesis and new energy lithium batteries, in particular to a water-based adhesive, a preparation method of the water-based adhesive and application of the water-based adhesive to a lithium ion battery. The invention relates to a water-based adhesive which is obtained by reacting a polycarboxylic acid polymer with a compound containing an epoxy group. Carboxyl groups in polycarboxylic acid react with epoxy groups in epoxy alcohol through carboxylic acid-epoxy addition reaction, and the adhesive has high water solubility due to the fact that the adhesive contains carboxyl groups and hydroxyl groups; and the current trend that the negative electrode water-based adhesive replaces the oily adhesive is met. Through hydroxyl modified polycarboxylic acid, the flexibility of an adhesive film is improved, the electrochemical performance of a battery cell is greatly improved, the hydroxyl modified polycarboxylic acid type water-based adhesive is applied to a silicon negative electrode to assemble a button cell, and it can be found that the long cycle performance, the rate capability and the capacity retention ratio of the cell are greatly improved.

The utility model provides a button cell and electronic equipment. The button cell comprises: a top cover having a first through hole; the pole is installed in the first through hole, the pole comprises a first pole body and a second pole body, and a first protruding part is arranged on the side, facing the second pole body, of the first pole body; the first lug boss is provided with a first end part close to the second pole body and a second end part far away from the second pole body; the first pole body is provided with the first protruding part, the first protruding part is provided with the first end part and the second end part, the riveting groove is defined between the first pole body and the second end part, and at least part of the second pole body is located in the riveting groove, so that the second pole body can be riveted with the first pole body; meanwhile, the cross sectional area of the second end part is larger than that of the first end part, and the cross sectional area of the second end part is gradually reduced along the direction deviating from the first end part, so that the second end part can be tightly attached to the first pole body, and the first pole body and the second pole body are firmly fixed.

The sealed electronic luminescent lamp comprises a shell and an electronic lamp body, the shell comprises an upper shell body and a lower shell body, the top of the upper shell body is a flexible plastic plate, a first protruding strip and a second protruding strip are arranged on the inner side of the upper shell body, the electronic lamp body is embedded in a groove body of the lower shell body, and the electronic lamp body comprises a circuit board and a button cell. A first round hole and a second round hole are formed in the top of the circuit board, a lower notch is formed in the bottom of the circuit board and sleeved with a metal sheet, the metal sheet can swing leftwards and rightwards by pressing the first protruding strip and the second protruding strip, an anode copper sheet is embedded in one side of the first round hole, and the metal sheet swings leftwards to make contact with the anode copper sheet. The first protruding strip on the left side of the flexible plastic plate is pressed, the first protruding strip extrudes the metal sheet to make the metal sheet make contact with the positive electrode copper sheet on one side of the first round hole, the positive electrode and the negative electrode of the circuit board are communicated with the button battery to emit light, opening is achieved, and the switch is sealed, small in size, wide in application and capable of being applied to products such as shoes, clothes, headwear and toys. Good commercial prospects are realized.

The present application relates to a secondary battery and an electrical apparatus. The secondary battery comprises a positive electrode piece; the positive electrode piece comprises a positive electrode active material layer, the single-sided coating weight G1 of the positive electrode active material layer satisfying: 360 mg / 1540.25 mm2≤G1≤550 mg / 1540.25 mm2; the compaction density ρ1 of the positive electrode piece satisfies: 2.4 g / cm3≤ρ1≤2.9 g / cm3; the positive electrode piece satisfies: when the positive electrode piece and a lithium metal piece are manufactured into a button cell, and the button cell is subjected to constant-current discharging to 3.2 V at the 1C rate, the obtained discharge capacity per gram is C1, and when the button cell is subjected to constant-current discharging to 2 V at the 1C rate, the obtained discharge capacity per gram is C2, where r=C1 / C2, and r satisfies: 80%≤r≤98%.

The application provides a button cell structure, a manufacturing method thereof and a button cell, wherein the button cell structure comprises a winding core formed by winding a laminated structure and having a hollow inner hole, the laminated structure comprises at least one positive electrode sheet, at least one negative electrode sheet and a separator separating the at least one positive electrode sheet and the at least one negative electrode sheet, and at least two ends of the winding core are provided with a separator bonding layer wrapping the winding core, which is used for fixing the positive electrode sheet and the negative electrode sheet. The application provides a button cell structure, a manufacturing method thereof and a button cell, which at least solve the technical problem that the positive electrode sheet and the negative electrode sheet are prone to shifting, avoid short circuit caused by the contact between the positive electrode sheet and the negative electrode sheet and the shell in the button cell, and improve the use safety of the button cell.

The invention belongs to the technical field of batteries, and particularly relates to a method for evaluating the energy efficiency of a lithium iron phosphate positive electrode material. The evaluation method comprises the following steps: (1) mixing a lithium iron phosphate positive electrode material, a binder and a solvent to obtain lithium iron phosphate slurry; (2) coating an aluminum foil with the lithium iron phosphate slurry, and sequentially carrying out drying and rolling treatment to obtain a positive pole piece; and (3) assembling the positive pole piece into a button battery, and carrying out charge and discharge test. The method has the beneficial effects that the lithium iron phosphate positive electrode material and the binder are directly mixed and detected, and the detection method is improved, so that the lithium iron phosphate positive electrode material incoming material inspection is quickly and accurately carried out at low cost.

The invention provides a preparation method of a high-conductivity lithium manganese iron phosphate material, the preparation raw materials of the lithium manganese iron phosphate material comprise a three-dimensional sheet niobium pentoxide conductive frame, a manganese source, an iron source, a lithium source and a carbon source, the niobium pentoxide conductive frame is of a sheet porous structure, the structure can accommodate the lithium manganese iron phosphate material to be filled between sheet layers and pores, so as to form a three-dimensional spherical structure; the obtained spherical lithium manganese iron phosphate material has excellent conductivity and processability, and can show relatively high discharge capacity of a button cell when being used as a positive electrode material of a lithium ion battery.

The invention provides a button cell. The button cell comprises a shell and a laminated cell. The shell comprises a bottom shell, a pole and a top cover. The top cover is hermetically connected with the bottom shell. And the pole is connected with the top cover. And the bottom shell and the pole lead out different polarities. The laminated battery cell is arranged in the shell; along the stacking direction of the laminated battery cell, the laminated battery cell comprises a first single-sided pole piece and a second single-sided pole piece which are positioned on the outermost side. And the first single-sided pole piece and the second single-sided pole piece are opposite in polarity. The first single-sided pole piece comprises a first current collector and a first active material layer; along the stacking direction of the laminated cell, the surface, facing the pole, of the first current collector is directly and electrically connected with the pole. The first active material layer is arranged on the surface, back to the pole, of the first current collector. And the second single-sided pole piece comprises a second current collector and a second active material layer. And the surface of the second current collector back to the pole is directly and electrically connected with the bottom shell. The second active material layer is arranged on the surface, facing the pole, of the second current collector.

The present invention relates to a battery cell structure, a button cell and a method for preparing a button cell. The battery cell structure comprises a first pole piece and a second pole piece, wherein the first pole piece and the second pole piece have opposite polarities, and at least one of the first pole piece and the second pole piece comprises a current collector region and an empty foil region, wherein the empty foil region is located at the edge of the current collector region and can extend along the length direction of the pole piece, and the empty foil region is configured to be able to form a full pole ear by bending, and the width of the empty foil region ranges from 2 mm to 4 mm. In this way, the design of leading out the full pole ear by bending the empty foil region can eliminate the influence of the angle between the other pole ear, so that the welded welded parts in the opposite direction of the winding direction can better offset the current sound generated in the process of winding the battery cell structure, so that the battery with the battery cell structure will not generate current sound in the application product, significantly improving the sound quality performance of the product, reducing the background noise interference, and thus enhancing the user experience.

The utility model discloses a button cell power-saving circuit used for a real-time clock circuit. The button cell power-saving circuit comprises a power supply, a diode, an RTC chip, a power field effect transistor and a button cell. The power supply is used for providing power supply voltage for the RTC power supply loop; the anode of the diode is connected to the power supply, and the cathode is connected to the power input end of the RTC chip; the drain electrode of the power field effect transistor is connected to the power input end of the RTC chip, the source electrode is connected to the positive electrode of the button cell, and the grid electrode is connected to a power supply so as to control the conduction state of the power field effect transistor; when the power supply supplies power normally, the RTC chip obtains voltage from the power supply through the diode, at the moment, the power field effect transistor is not conducted, and the button battery does not output current; when the external power supply loses power, the voltage of the power supply is reduced to 0, the power field effect transistor is conducted, and the button cell supplies power to the RTC chip. The power consumption can be reduced, and the service life of the button cell is prolonged.

The present invention provides a button cell electrode, a button cell and a preparation method thereof, wherein the electrode comprises a current collector; a pole ear, a pole ear glue is provided, one end of the pole ear has a welding area, and the pole ear is welded to the current collector through the welding area; wherein at least a portion of the pole ear glue overlaps with the current collector, and a bendable flexible portion is formed between the welding area and the pole ear glue. Compared with the prior art, in the button cell of the present invention, at least a portion of the pole ear glue overlaps with the current collector, and the welding area of ​​the pole ear is arranged at the end position, thereby forming a flexible portion between the welding area and the pole ear glue for bending, and the arrangement of the flexible portion avoids the risk of the aluminum-plastic film being squeezed and ruptured due to the formation of a sharp angle when the pole ear is bent from the top, and at the same time, the pole ear is directly bent in the flexible portion area, which completely solves the problem of leakage and inflation caused by the puncture of the aluminum-plastic film.

The invention provides a method for analyzing a main failure mechanism of a battery with an electrolyte leakage fault. The method comprises the following steps of: performing calendar aging, cyclic aging and reference performance test on a normal battery and a leakage battery; comparing the external characteristics of the normal battery and the leakage battery, and obtaining the difference between the leakage battery and the normal battery in the aspect of external characteristic performance; carrying out deep analysis on the dynamic degradation mechanism of the liquid leakage battery by utilizing an in-situ analysis means; obtaining a normal battery pole piece and a fault battery pole piece, and characterizing the battery pole pieces by using an electrochemical characterization means; battery regeneration is realized by using a battery pole piece, re-supplementing electrolyte and manufacturing a button battery; performance testing and aging testing are performed on the regenerated battery; the performance of the regenerated battery is evaluated; and a failure mechanism of the battery with liquid leakage is disclosed. And comparing the performance difference between the regenerative battery and the normal battery, and determining the irreversible influence of the fault on the battery. According to the invention, the main way of failure of the battery with liquid leakage and the irreversible influence of the liquid leakage fault on the battery can be revealed.

The invention provides a water-based composite electrolyte and a preparation method and application thereof. The water-based composite electrolyte comprises soluble zinc salt, amino acid hydrochloride additives and deionized water. The aqueous composite electrolyte can be used for a symmetrical button cell, a half cell or an aqueous zinc ion total cell. By adjusting zinc ion deposition on the surface of the zinc electrode, the growth of zinc dendrites is reduced, and the shuttle effect of the iodine positive electrode is inhibited, so that the coulombic efficiency and the cycle performance of the water-based zinc-iodine battery are improved. The additive disclosed by the invention can be adsorbed on the surface of a zinc negative electrode, delays the nucleation process and inhibits the growth of zinc dendrites; the form of hydrochloride can play a role of a buffer solution, stabilize the pH value of the electrolyte, inhibit the corrosion of the zinc negative electrode and reduce the hydrogen evolution reaction; the hydrochloride form can weaken the protonation effect of amino acid groups and enhance the electrostatic interaction between the amino acid groups and the polyiodide, so that the shuttle effect is inhibited, and the coulombic efficiency and the cycle performance of the aqueous zinc-iodine battery are improved.