99results about How to "Increase battery capacity" patented technology

The invention relates to the technical field of vehicle battery replacement, in particular to a battery replacement method and system. S10, a grabbing unit grabs a battery box of the first vehicle based on the fact that the first vehicle arrives at the battery replacement area; s20, the battery box of the first vehicle is grabbed based on a grabbing unit, the battery box of the first vehicle is moved into a second cabin, and state data are obtained; s30, on the basis that the state data comprises the initial state, the battery box of the first vehicle is moved to a second row of idle charging seats; and S40, on the basis that the battery box of the first vehicle is moved to the idle charging base of the second column, the grabbing unit moves the battery box capable of being grabbed to the first vehicle. Therefore, the problem of weak battery swap capability of the battery swap station is solved.

The invention relates to the technical field of charging control, and particularly discloses a primary-secondary vehicle power supply system and a control method. The system comprises a double-head charging and discharging gun, a primary vehicle power battery, a secondary vehicle power battery, a primary vehicle whole vehicle controller and a secondary vehicle whole vehicle controller, the double-end charging and discharging gun is used for transmitting a charging inserting gun signal to the whole secondary vehicle controller when being inserted into the primary vehicle charging and discharging port and the secondary vehicle charging and discharging port; the secondary vehicle whole vehicle controller is used for collecting a secondary vehicle electric quantity signal of a secondary vehicle power battery and transmitting the secondary vehicle electric quantity signal to the primary vehicle whole vehicle controller through the double-end charging and discharging gun when receiving a charging gun insertion signal; the mother vehicle whole vehicle controller is used for collecting a mother vehicle electric quantity signal of the mother vehicle power battery and controlling the mother vehicle power battery to be in the charging and discharging state of the child vehicle power battery according to the obtained comparison result of the child vehicle electric quantity signal and the mother vehicle electric quantity signal. The power of the secondary vehicle power battery is supplied to the primary vehicle power battery for use, so that the primary vehicle has larger battery capacity.

The utility model provides a secondary locking mechanism, a locking device and an electric automobile, the secondary locking mechanism comprises a lock base, a spring bolt and a lock rod, the lock base is provided with an opening and a cavity extending from the opening to the inside of the lock base, and the opening is used for allowing a locking piece installed on a battery pack to enter the cavity; the spring bolt is located in the cavity, and the spring bolt can rotate relative to the lock base to open or close the opening so as to change between an unlocking state and a locking state; one end of the lock rod is rotationally connected to the spring bolt, the lock rod is provided with a guide part and an unlocking part, and when external force acts on the unlocking part, the lock rod moves along a moving path guided by the guide part so as to drive the spring bolt to rotate relative to the lock base to open the opening. The lock rod is beneficial for increasing the maximum rotation angle of the spring bolt, the force application position of external force and the arrangement of the spring bolt are more flexible and diversified, the guide part is beneficial for improving the accuracy of rotation of the spring bolt, and the situation that the spring bolt cannot rotate due to the fact that the lock rod deviates from a correct moving path is avoided.

The invention belongs to the technical field of lithium ion batteries, and particularly relates to a lithium ion battery high-voltage electrolyte and a lithium ion battery. The high-voltage electrolyte comprises a lithium salt, a first additive, a second additive, an auxiliary additive and an organic solvent, the first additive is a sulfur-containing siloxy boric acid ester derivative, and the second additive is a benzofuran boric acid ester derivative. Borate groups and benzofuran groups in the first additive and the second additive can promote generation of CEI and SEI protective films on the surfaces of a positive electrode and a negative electrode, the stability of the material is enhanced, electrolyte decomposition is inhibited, and the high-voltage performance of the lithium battery is improved; the trimethylsiloxy group can remove HF in the system, can reduce the corrosion to the positive and negative electrode interface of the battery, and improves the cycle performance of the battery; boron and sulfur atoms in the additive can significantly reduce the internal resistance of the battery and improve the performance of the high-voltage battery at low temperature.

The invention discloses modified ferromanganese ammonium phosphate, modified ferromanganese pyrophosphate and a preparation method and application of the modified ferromanganese ammonium phosphate and the modified ferromanganese pyrophosphate, and belongs to the technical field of battery materials. Adding an oxidizing agent and regulating the pH to form ammonium ferric phosphate, and carrying out ion exchange reaction on the ammonium ferric phosphate, manganese salt and doped metal salt to exchange iron elements in the ammonium ferric phosphate to form metal doped ammonium manganese ferric phosphate; meanwhile, the exchanged iron ions continuously react with phosphate radicals generated by converting manganese ions, doped metal ions and ferrous dihydrogen phosphate into iron phosphate in the system to form metal-doped manganese iron ammonium phosphate, so that manganese, iron and doped metal atoms can be uniformly distributed in a precursor crystal lattice at an atomic level; the generation of a non-solid solution impure phase and a solid solution phase with a non-target manganese-iron ratio and the introduction of anion impurities are effectively avoided, so that the ratio of metal to phosphorus in the metal-doped ammonium manganese iron phosphate obtained by the reaction is less than 1, and the electrochemical performance of the modified lithium manganese iron phosphate is favorably improved when the metal-doped ammonium manganese iron phosphate is applied to the positive electrode material.

The invention discloses a battery, and belongs to the technical field of batteries. The battery comprises a positive current collector, a negative current collector and a diaphragm, the tensile strength a1 of the positive current collector, the tensile strength a2 of the negative current collector, the elongation b1 of the positive current collector, the elongation b2 of the negative current collector, the diaphragm rupture temperature c, the diaphragm thermal shrinkage rate d and the diaphragm hole closing temperature e meet the following relational expression: N1 = (a1 + a2) * (b1 + b2) * c / d / e, wherein the N1 is the safety coefficient of the battery, and the N1 is 416 to 25600. The battery disclosed by the invention can simultaneously consider high energy density, high cycle capacity retention ratio and safety, and meets the technical requirements of customers.

The utility model relates to the technical field of vehicles, in particular to a battery pack cover plate, a battery pack and a vehicle, the battery pack cover plate is suitable for being connected with a box body of the battery pack and abutting against a pole of a single battery of the battery pack, a plurality of cooling channels are arranged in the battery pack cover plate, the cooling channels extend in the first direction, and the cooling channels are arranged in the first direction. The plurality of cooling channels are arranged at intervals along a second direction, and the first direction and the second direction are respectively the length direction and the width direction of the battery pack cover plate. The cooling channel is arranged in the battery pack cover plate, the battery pack cover plate is connected with the box body of the battery pack and abuts against the pole of the single battery, namely, the liquid cooling plate set and the cover plate of the battery pack are integrated into the battery pack cover plate, so that the pole of the single battery can be cooled, and the quick charging requirement is met; and the Z-direction space of the battery pack can be prevented from being excessively occupied, and the saved Z-direction space can be used for increasing the battery capacity of the single battery.

The utility model relates to an energy storage container with a fire-fighting independent module, which comprises a container body, a plurality of battery clusters and a plurality of fire-fighting independent modules, a fire extinguishing medium is independently arranged in each fire extinguishing independent module, each fire extinguishing independent module is provided with a nozzle used for spraying out the fire extinguishing medium, and the multiple fire extinguishing independent modules are arranged in a container body. According to the energy storage container, an existing fire-fighting structure composed of a fire-fighting gas cylinder and a fire-fighting pipe network is abandoned, the gas cylinder and the fire-fighting pipe network are omitted, a new fire-fighting structure is arranged again, fire extinguishing media are directly arranged in the fire-fighting independent modules, and the multiple fire-fighting independent modules are directly distributed in the container body; and the plurality of independent fire-fighting modules can be triggered to directly spray out the fire extinguishing medium. And moreover, a fire extinguishing medium can be closer to an ignition point, the reaction is quicker, and the arrangement can be more flexible and variable.

Provided is a negative electrode active material for a lithium ion secondary battery, which is represented by the general formula Li4Ti5O12-xMx, where x is 0 < x < 12, and element M is an element having a lower electronegativity than oxygen.

The utility model discloses a Bluetooth earphone mounting structure for a glasses leg, which comprises a glasses frame and a glasses leg body, and further comprises a Bluetooth main board, a Bluetooth earphone, a Bluetooth module and a Bluetooth earphone, a second battery is arranged in the leg sleeve, a second electrode is arranged on the outer wall of one side of the second battery, a first battery is arranged in the glasses leg body, a connector is arranged at one end, close to the leg sleeve, of the glasses leg body, a first electrode is arranged at one end of the connector, and the second electrode is in contact with the first electrode. The Bluetooth headset mounting structure for the glasses legs has the technical effects that the battery capacity is increased, the service life of the Bluetooth headset is prolonged, and convenience is provided for use of people.

A dual slot die coater according to the present disclosure is a dual slot die coater including a lower slot and an upper slot, for extrusion coating of an electrode active material slurry on a surface of a continuously moving current collector through at least one of the lower slot or the upper slot, and the dual slot die coater includes a lower plate, an intermediate plate positioned on the lower plate and an upper plate positioned on the intermediate plate, the lower slot being formed between the lower plate and the intermediate plate, and the upper slot being formed between the intermediate plate and the upper plate, wherein the lower plate, the intermediate plate and the upper plate have a lower die lip, an intermediate die lip and an upper die lip, each forming an front end with respect to the current collector, respectively, and a distance between the current collector and the lower die lip is larger than a distance between the current collector and the upper die lip and a distance between the current collector and the intermediate die lip.

The invention relates to the technical field of new energy materials and devices, and discloses a preparation method and application of an electrolyte based on acetylacetonation.The preparation method comprises the steps that a compound containing acetylacetonato serves as a homogeneous catalyst to be dissolved and dispersed in a common electrolyte of a lithium-sulfur battery, the metal active center of the compound can be fully exposed, and the electrolyte containing acetylacetonato is obtained; the homogeneous catalysis function is realized. When the acetylacetone-based electrolyte is applied to the field of lithium-sulfur batteries and used as the positive electrode side electrolyte of the lithium-sulfur batteries, sulfur redox kinetics can be promoted, so that the shuttle effect is inhibited, the loss of active substances is reduced, and finally the capacity and cycle stability of the lithium-sulfur batteries are improved.

The invention provides a coated modified precursor material and a preparation method thereof, a coated modified positive electrode material and a preparation method thereof, and a lithium ion battery. The coated and modified precursor material comprises a positive electrode material precursor and a composite material coated on at least part of the surface of the positive electrode material precursor, and the composite material is a composite material of KNbO3 and MoS2. The KNbO3 / MoS2 composite material has the characteristics of rapid ion transfer and high activity sites, and the positive electrode material coated with the composite material can improve the battery capacity, prolong the cycle life and the like of the lithium ion battery.

A technical object to be solved according to the present disclosure is to provide a secondary battery which has reduced electrical resistance by directly connecting an electrode assembly to a can and / or a terminal without lead tabs and also has an increased battery capacity by removing lead tabs. To this end, the present disclosure provides a secondary battery comprising: a can; an electrode assembly accommodated in the can and including a first uncoated portion extending in a first direction and a second uncoated portion extending in a second direction opposite to the first direction; a first current collector plate electrically connected to the first uncoated portion of the electrode assembly; a first terminal portion coupled to the can and electrically connected to the first current collector plate; and a second terminal portion coupled to the can and electrically connected to the second uncoated portion of the electrode assembly.

The utility model provides electronic equipment. The electronic equipment comprises a first circuit board and a second circuit board which are respectively positioned in an accommodating space of a shell and are oppositely arranged, the first circuit board comprises a first sub-circuit board and is provided with a first chip; the second circuit board comprises a third sub-circuit board and a fourth sub-circuit board, the third sub-circuit board and the fourth sub-circuit board are in a step shape, the width of the third sub-circuit board in the first direction is smaller than that of the fourth sub-circuit board, a second chip is arranged on the fourth sub-circuit board, and the third sub-circuit board directly faces the first sub-circuit board; the first battery is arranged between the third sub-circuit board and the first sub-circuit board, and the first battery and the fourth sub-circuit board are overlapped in the second direction; and one end of the second battery is adjacent to the fourth sub-circuit, and the other end of the second battery is overlapped with the first sub-circuit board in the second direction. According to the electronic equipment, the capacity of the battery is improved under the condition that the thickness of the electronic equipment is not changed by utilizing the advantage of the stacking space of the stepped structure.

Provided is a non-aqueous electrolyte secondary battery wherein cycle characteristics are improved while improving the battery capacity per unit volume. This positive-electrode active material for a non-aqueous electrolyte secondary battery comprises: an electrode body in which a strip-shaped positive electrode and a strip-shaped negative electrode are wound with a separator interposed therebetween; a bottomed cylindrical exterior body having an outer diameter of 25 mm or more, that houses the electrode body and is connected to the negative electrode; and a sealing body that seals an opening at the upper end of the exterior body and is connected to the positive electrode. The positive electrode includes a positive-electrode current collector, and a positive-electrode mixture layer formed on the surface of the positive-electrode current collector, the positive-electrode mixture layer containing a positive-electrode active material and a phosphorus compound. The positive-electrode active material includes a lithium-containing composite oxide having a layered rock-salt structure. The weight per unit area of the positive-electrode mixture layer is 250 g / m2 or more. In the electrode body, three or more positive-electrode leads are led out.

A cylindrical lithium primary battery of the present application includes an electrode body that is configured such that a positive electrode and a negative electrode are spirally wound with a separator interposed therebetween. The positive electrode includes a positive electrode current collector and positive electrode mixture layers that are disposed on both surfaces of the positive electrode current collector and contain manganese dioxide as a positive electrode active material. The manganese dioxide content per unit area of each of the positive electrode mixture layers is 0.205 to 0.227 g / cm2 for one surface of the positive electrode current collector. The negative electrode includes a negative electrode current collector and two lithium layers that are disposed on one surface of the negative electrode current collector and spaced 6 to 12 mm apart in the longitudinal direction. Each of the two lithium layers has a lithium content of 0.014 to 0.017 g / cm2 per unit area. The negative electrode is wound in such a manner that the negative electrode is folded back so that the folded negative electrode current collector overlaps itself, and the inner peripheral ends of the two lithium layers are respectively located outside the winding center.

The present invention relates to a lead-acid battery negative electrode active material and a preparation method thereof, belonging to the technical field of battery negative electrode materials, including the following raw materials by mass: 95-105 parts of mixed lead powder, 0.1-0.5 parts of barium sulfate, 0.1-0.5 parts of lignin, 0.05-0.15 parts of carbon black, 0.05-0.15 parts of molybdenum disulfide and 10-30 parts of paste liquid; its preparation method comprises the following steps: adding mixed lead powder, barium sulfate, lignin, carbon black and molybdenum disulfide to the paste liquid in sequence and stirring evenly to obtain a paste; placing the paste on a grid for curing to obtain a cured plate; electrolytically oxidizing the cured plate and reducing it in a sulfuric acid solution to form a lead-acid battery negative electrode active material. By introducing molybdenum disulfide into the lead-acid battery negative electrode active material, the discharge capacity and cycle life of the lead-acid battery are greatly improved.

The invention relates to a preparation method and application of a lithium battery negative electrode binder, belongs to the technical field of lithium batteries, and solves the technical problems that an existing lithium battery negative electrode binder is poor in mechanical strength, poor in cycle performance when applied to a lithium battery, unstable in processing and the like. According to the solution, the lithium battery negative electrode binder is prepared from the following components in percentage by mass: 0.5 to 1 percent of sulfonic acid functionalized COFs and 99 to 99.5 percent of polyacrylic acid aqueous solution or 0.5 to 1 percent of carboxylic acid functionalized COFs and 99 to 99.5 percent of polyacrylic acid aqueous solution; the sulfonic acid functionalized COFs or carboxylic acid functionalized COFs are prepared from a first monomer and a second monomer through a Schiff base reaction; the preparation method of the lithium battery negative electrode binder comprises the following steps: 1) preparing sulfonic acid functionalized COFs or carboxylic acid functionalized COFs; 2) weighing polyacrylic acid and water, and uniformly mixing to prepare a polyacrylic acid aqueous solution; and 3) weighing 0.5%-1% of sulfonic acid functionalized COFs or carboxylic acid functionalized COFs prepared in the step 1), adding the weighed sulfonic acid functionalized COFs or carboxylic acid functionalized COFs into 99%-99.5% of a polyacrylic acid aqueous solution, and uniformly dispersing the sulfonic acid functionalized COFs or carboxylic acid functionalized COFs in the polyacrylic acid aqueous solution in an ultrasonic manner. Compared with the prior art, the lithium battery negative electrode binder has the advantages that the lithium battery negative electrode binder is high in mechanical strength, a prepared electrode plate is small in impedance and not prone to breakage during processing, and a prepared lithium battery is high in cycling stability and cycling efficiency, large in capacity and the like.

The embodiment of the utility model provides a cover plate assembly, a battery monomer, a battery pack and electric equipment. The cover plate assembly comprises a cover plate, an electric connecting piece and a ceramic insulating piece, the cover plate is used for covering the opening of the shell and is provided with a first side close to the center of the shell; the electric connecting piece penetrates through the cover plate and is used for being electrically connected with the electrode assembly; the ceramic insulating piece is located on the first side and arranged between the electric connecting piece and the cover plate so as to achieve insulation of the electric connecting piece and the cover plate. According to the cover plate assembly provided by the embodiment of the invention, the problem of short circuit caused by contact between the electric connecting piece and the cover plate can be avoided, and the use safety of the battery pack can be improved; and moreover, the occupation of the external space of the battery monomers can be reduced, and the battery capacity of the battery pack can be further improved.

The present application provides a negative electrode material and a preparation method and application thereof, wherein the negative electrode material comprises a silicon-based material core and a coating layer at least partially coated on the surface of the silicon-based material core, and the first charging expansion coefficient, the first discharging expansion coefficient, the second charging expansion coefficient, and the second discharging expansion coefficient of the negative electrode material meet the following conditions: 0.016≤≤0.025; 0.020≤≤0.030; 0.0008≤≤0.002; 0.003≤≤0.0036. Based on the negative electrode material of the present application, the problem of poor capacity and energy density and low initial efficiency of lithium-ion batteries in the prior art is solved.

The present invention relates to the field of mobile battery replacement technology, and specifically, to a mobile battery replacement method and system. The mobile battery replacement method includes: step S10, based on the platform component moving to the battery replacement area, driving the battery box of the platform component to move to a first set position, and driving the idle charging seat to move to a second set position; step S20, based on the platform component being stationary in the battery replacement area, driving the hoist to grab the battery box on the battery replacement vehicle. Step S30, based on the battery box of the platform component moving to the first set position, the hoist grabs the battery box on the battery replacement vehicle and moves along the battery replacement channel. Step S40, based on the idle charging seat moving to the second set position, the hoist places the grabbed battery box on the battery replacement vehicle on the idle charging seat. Step S50, based on the hoist putting down the battery box on the battery replacement vehicle, the hoist grabs the battery box of the platform component and moves it to the battery replacement seat of the battery replacement vehicle. This solves the problem of improving the battery replacement capacity of the platform component.

The application discloses a kind of aqueous zinc metal battery electrolyte and application thereof, belong to new energy battery field.The electrolyte of the application is composed of soluble zinc salt, succinic acid and water, the concentration of the soluble zinc salt is 1~5mol / kg, the concentration of the succinic acid is 0.01~0.5mol / kg.The aqueous zinc metal battery electrolyte provided by the application first uses succinic acid as electrolyte additive, which has strong adsorption and desolvation between zinc ions in electrolyte Dual role, both solve the hydrogen evolution, corrosion, passivation and dendrite and other problems existing in zinc negative electrode in aqueous electrolyte, also improve the charge-discharge efficiency of battery, battery capacity and electrochemical performance such as cycle stability.

The invention relates to the technical field of electrochemical materials, in particular to a pre-sodium hard carbon material and a preparation method and application thereof. The pre-sodium modification method for preparing the pre-sodium modification hard carbon material comprises the following steps: (1) mixing a carbon source, amino acid and phosphoric acid, and carrying out pre-carbonization reaction to obtain a doped carbon source; (2) providing dispersion liquid containing the doped carbon source, a surfactant and weak base, and introducing organic sodium salt to carry out sodium pre-modification reaction to obtain a hard carbon precursor; and (3) carrying out carbonization reaction on the hard carbon precursor to obtain the pre-sodium hard carbon material. The pre-sodium treatment method is simple to operate and high in safety, the obtained pre-sodium treatment hard carbon material is excellent in performance, and the problems that a sodium ion battery is low in energy density and poor in cycle performance can be effectively solved.

The application discloses a modified iron phosphate material, a lithium iron phosphate material and a preparation method and application thereof, and belongs to the technical field of lithium iron phosphate materials. The modified iron phosphate material is in a sheet shape as a whole, and the modified iron phosphate material comprises zirconium phosphate with a sheet structure, the zirconium phosphate is loaded with elemental silver and lithium oxide between layers, and the outer surface of the zirconium phosphate is formed with iron phosphate. The modified iron phosphate material can be further prepared into the lithium iron phosphate material and applied to a battery, so that the rate performance, coulomb efficiency, capacity and conductivity of the battery can be improved. The preparation method of the modified iron phosphate material and the lithium iron phosphate material is simple and can be used for industrial production.

The present invention is a negative electrode including negative electrode active material particles, wherein the negative electrode was charged at least once, the negative electrode active material particles contain silicon oxide particles coated with a carbon layer, and the silicon oxide particles contain Li2SiO3 in at least a part thereof, outermost surfaces of the negative electrode active material particles are covered with a composite coating containing Si, O, C, and H, and a TOF-SIMS spectrum of a surface of the negative electrode active material particles obtained by time-of-flight secondary ion mass spectrometry has at least one negative secondary ion peak of a peak attributed to SiHO3-, a peak attributed to SiO2CH3-, and a peak attributed to SiOCH3-. This can provide: a negative electrode that can achieve sufficient battery cycle characteristics while containing a silicon-based negative electrode material; a lithium-ion secondary battery having this negative electrode; and a method for manufacturing this lithium-ion secondary battery.

a negative electrode for a lithium ion cell battery capable of increasing a cell battery capacity and improving cell battery characteristics such as cycle characteristics is provided. A negative electrode mixture layer 1M including a negative electrode active material, a binder, and hydrophobized cellulose is formed as described below. The negative electrode active material includes nano-Si, the binder is an organic solvent-based binder (polyimide or polyvinylidene fluoride), and the hydrophobized cellulose results from substitution of a part of hydrophilic groups of cellulose by a hydrophobic group. When the organic solvent-based binder is used as described above, reaction between water and Si can be prevented, and the electrode characteristics can be improved. In a general technique, the addition amount of the organic solvent-based binder needs to be increased because of use of the Nano-Si, and therefore, this decreases the cell battery capacity and the cycle characteristics (cell battery life). However, by addition of the hydrophobized CeNF, the cell battery capacity and the cycle characteristics (cell battery life) can be improved.

An embodiment of the present invention relates to a cylindrical secondary battery comprising: a cylindrical can having a bottom surface and a side portion extending from the bottom surface, one end of the side portion being open to form an opening; an electrode assembly accommodated in the can; and a cap assembly including a gasket which is inserted into the can with the electrode assembly inserted in the can to come into contact with the electrode assembly, and a cap plate which is disposed on the gasket and is electrically connected to the electrode assembly, wherein the can has, at the edge of the opening, a curling portion which presses the gasket to bring the gasket into contact with the cap plate.