17results about How to "Improve discharge performance" patented technology

The utility model provides a kind of double-layer module structure, it is related to new energy battery technical field, including first cold plate and second cold plate, the inside of first cold plate and second cold plate is all strip array and has welding fixture, and gap is left between the welding fixture of adjacent top and bottom, and gap is equal, and electric core is installed in welding fixture, and electric core is in stacked arrangement, whole module structure is constituted by the sandwich structure of first cold plate, second cold plate and connecting plate, cooperate cooling radiating plate and heat-absorbing plate surface, realize multiple surface cooling function, significantly improve cooling efficiency.Electric core generated heat is transferred to heat-absorbing plate surface by heat conduction end, and is taken away by cooling liquid flow channel and micro heat dissipation channel high efficiency, simultaneously, first cold plate and second cold plate are synergistically radiated from two sides, effectively reduce the temperature of top pole and busbar area, solve the problem of limited cooling efficiency of single surface cooling scheme in high heat generation scene in background technology.

The invention discloses a lithium carbon fluoride battery electrolyte, a preparation method thereof and a lithium carbon fluoride battery, and belongs to the technical field of lithium / carbon fluoride primary batteries. The lithium carbon fluoride battery electrolyte comprises a lithium salt and a monofluoro-substituted short-chain ether solvent. Compared with a non-fluorinated ether solvent, the monofluoroether solvent has good compatibility with a carbon fluoride positive electrode and a metal lithium negative electrode, so that the battery has good discharge performance. Compared with a polyfluoro-substituted ether solvent, the monofluoro substituent group (-CH2F) obviously improves the ionic conductivity of the lithium carbon fluoride battery electrolyte at low temperature, and meanwhile, the monofluoro substituent group (-CH2F) has weak solvation energy at low temperature, so that the discharge platform of the battery at low temperature is obviously improved, and the discharge capacity of the battery is improved.

The invention provides a lithium manganate positive electrode material and a preparation method thereof, a positive plate and a battery, and belongs to the technical field of batteries, the structural general formula of the lithium manganate positive electrode material is Li1 + xMyMn2-(x + y) O4, x is greater than or equal to 0.1 and less than or equal to 0.33, y is greater than or equal to 0.005 and less than or equal to 0.01, M comprises at least one of Co, Ni, Cr and Fe, and the 111 crystal face diffraction peak intensity I111 of the lithium manganate positive electrode material is greater than 3100. According to the lithium manganate positive electrode material, the energy density, the effective gram volume and the structural stability of the lithium manganate positive electrode material, especially the performance of the lithium manganate positive electrode material in a low-voltage range of 2.0-3.3 V, are improved through lithium enrichment, doping of a proper proportion of M elements and synergistic cooperation of 111 crystal face diffraction peak intensity of the lithium manganate positive electrode material, so that the energy density, the effective gram volume and the cycling stability of the battery are improved, and the battery performance is improved. The battery service life is prolonged.

The present disclosure relates to a groove-type mold for coating an active material layer on a foil, an electrode manufacturing method for manufacturing an electrode using the groove-type mold, and an electrode manufactured using the groove-type mold. According to the present disclosure, a groove mold is configured to move in a width direction with respect to a foil.

The utility model provides a current divider, a battery pack and a vehicle. The current divider comprises a conducting bar, a main control board and a connector, the conducting bar comprises a first surface and a second surface, and the first surface and the second surface are oppositely arranged along the thickness direction of the conducting bar; wherein a welding area is arranged on the first surface; the main control board is connected to the second surface. The connector is connected to the side, away from the conducting bar, of the main control board. According to the shunt, the welding area on the first surface is welded with the external connecting terminal, so that current transmission between the shunt and the external connecting terminal is realized, the influence caused by assembly tolerance and manufacturing tolerance can be effectively avoided, the contact internal resistance of a connecting part is reduced, and the service life of the shunt is prolonged. Meanwhile, connection between the shunt and the BMS board card is changed into direct connection through the connector, so that the connection process between the shunt and the BMS board card is simplified, the risk of electromagnetic interference is reduced, and the integration rate of components in the battery pack is improved.

This invention relates to a plasma generator based on a dense microporous material catalysis, belonging to the field of low-temperature plasma technology. The plasma generator contains at least one discharge unit, which includes a first electrode, a microporous ceramic medium, and a second electrode. The first electrode is used to connect to a power source, and the second electrode is used for grounding. The microporous ceramic medium is used to adsorb gas molecules and active particles generated by the plasma discharge. This invention generates micro-discharge in a dense microporous medium, which has an extremely high specific surface area. When gas passes through, it is adsorbed onto the surface of the micropores in the medium. Similarly, active substances in the plasma are adsorbed onto the surface of the micropores in the medium. This improves the contact efficiency between short-lived, highly active particles and free radicals in the plasma and the reactants, promotes surface catalytic reactions, and improves the overall efficiency of the device.

The invention discloses a self-breathing type high-performance zinc air battery and a manufacturing method thereof, and the method comprises the following steps: preparing a La1-ySryMnO3-Mn3O4-porous carbon composite catalyst (y = 0.6-0.9) based on a one-pot method, and forming an extremely thin planar air electrode with the thickness of 0.35-0.55 mm by adopting a spraying method in combination with a cold pressing process; preparing the obtained planar air electrode into a cylindrical structure and then forming a flat-bottom U-shaped air positive electrode, putting a cylindrical diaphragm into the air positive electrode, injecting zinc negative electrode paste into the cylindrical diaphragm, and then inserting a negative electrode current collector with multiple layers of coaxial structures; the prepared air electrode is high in reaction activity and low in polarization potential; the cylindrical No.1 zinc air battery which is large in capacity (37Ah, working current 500mA), high in specific energy density (greater than 400W / kg) and capable of continuously and stably working under large current (2-5A) is developed by the method, and large-scale production of the high-performance LR20 type zinc air battery is facilitated.

The application provides a cylindrical battery monomer, a battery device and an electric equipment. The cylindrical battery monomer comprises a shell, an electrode assembly, a first current collecting member and an electrode terminal. The shell comprises a wall part provided with an electrode lead-out hole. The electrode assembly is accommodated in the shell, the electrode assembly and the wall part are arranged along the axial direction of the cylindrical battery monomer, and the electrode assembly comprises a first tab. The first current collecting member is electrically connected to the first tab. The electrode terminal is arranged on the wall part. The electrode terminal comprises a terminal body and a first limiting part, at least part of the terminal body is accommodated in the electrode lead-out hole, at least one side of the terminal body along the axial direction is provided with a recess, the terminal body comprises a connecting part corresponding to the bottom surface of the recess, the connecting part is welded with the first current collecting member, and the first limiting part is connected to the terminal body and protrudes from the outer circumferential surface of the terminal body. At least part of the first limiting part is located on the side of the wall part facing the electrode assembly along the axial direction, and the size of the first limiting part along the axial direction is greater than the size of the connecting part along the axial direction.

The purification unit comprises a plurality of first electrodes and a plurality of second electrodes, the first electrodes and the second electrodes are hollow pipes with different diameters, the first electrodes and the second electrodes are coaxially sleeved and are sequentially and alternately arranged in the direction from the axis to the periphery, and the purification unit further comprises an upper connecting support and a lower connecting support. The upper connecting support is arranged at one end of each first electrode and electrically connects and fixes the first electrodes together, the lower connecting support is arranged at one end of each second electrode and electrically connects and fixes the second electrodes together, and a first opening is formed between the other ends of the adjacent first electrodes. A second opening is formed between the other ends of the adjacent second electrodes, the plurality of first electrodes connected together are inserted between the plurality of second electrodes connected together from the second opening, and the plurality of second electrodes connected together are inserted between the plurality of first electrodes connected together from the first opening, and the first electrodes and the second electrodes are alternately arranged in sequence.

A kind of high-temperature evaporation equipment for manufacturing nanometer metal powder, including water-cooled barrel shell, water-cooled hemispherical shell, evaporation chamber, cooling water inlet A, cooling water cavity A, cooling water inlet C, plasma cathode column, cooling water inlet D, hemispherical shell cooling water passage, cooling water inlet B, crucible wall petal, cooling water outlet A, plasma anode terminal stud, crucible bottom, cooling water outlet B, hemispherical shell cooling water passage, barrel shell cooling water passage;Its characterized in that: the upper portion of hemispherical shell cooling water passage is equipped with cooling water cavity A;Due to the effect that the hemispherical shell cooling water flow channel of high-temperature evaporation equipment is equipped with cooling water cavity A, the gathered water can be effectively and evenly distributed to hemispherical shell cooling water flow channel and barrel shell cooling water flow channel, so that the cooling efficiency of hemispherical shell cooling water flow channel is high, which is conducive to the evaporation of metal vapor, thereby promoting the production quality of nanometer metal powder;The service life of high-temperature evaporation equipment is improved.

The utility model provides a kind of busbar structure, CCS assembly and battery module, busbar structure is used to carry out electric connection to multiple electric core, multiple electric core is arranged in multiple rows, each row of electric core includes N electric core along first direction arrangement, each column of electric core includes M electric core along second direction and staggered arrangement;Busbar structure makes multiple electric core constitute S group electric core branch series connection, and each group of electric core branch includes P electric circuit of parallel connection, wherein, M is greater than or equal to 2, N is greater than or equal to 3, P is greater than M.Through busbar structure, the electric connection of multiple rows of electric core is realized, and the circuit of P electric parallel connection in each group of S group electric core branch series connection is constituted, and P is greater than the number of each column of electric core (electric core row number) M.Under the premise of not increasing battery pack width, the number of electric parallel connection is increased from M to P, the number of electric parallel connection is improved, so as to improve battery module capacity and discharge capacity, better meet high-power scene demand.

The application discloses an array discharge element and an array electrode type pulse discharge gas laser. The array discharge element comprises a metal substrate, a plurality of unit electrodes and a plurality of pre-ionization needles. The metal substrate is provided with a plurality of electrode mounting holes arranged in an array. The unit electrodes are correspondingly mounted in each electrode mounting hole. The pre-ionization needles are correspondingly sleeved at the inner central positions of the unit electrodes. The gas laser comprises the array discharge element, a peaking capacitor, a plurality of energy storage capacitors and a ground electrode. The discharge element is connected with the plurality of energy storage capacitors in correspondence. One end of the peaking capacitor is connected with the discharge element, and the other end is connected with the ground electrode. The pre-ionization needles are uniformly distributed on the electrode plane, so that the ionization charges of the electrode space are more uniformly distributed, the effect of overall uniform pre-ionization is achieved, and the uniform main discharge is facilitated.

The utility model relates to the technical field of discharge circuit, concretely is a kind of electric vehicle high pressure initiative discharge circuit, comprising: MCU, upper bridge drive chip, lower bridge drive chip, three-phase full bridge circuit, high voltage bus capacitor, high voltage battery, bus voltage sampling module;The U-phase, V-phase, W-phase signal input end of three-phase full bridge circuit upper bridge is respectively connected the control signal output end of MCU through the upper bridge drive chip set;The U-phase, V-phase, W-phase signal input end of three-phase full bridge circuit lower bridge is respectively connected the control signal output end of MCU through the lower bridge drive chip set;The both ends of high voltage bus capacitor and high voltage battery are respectively connected on the voltage input end+ and voltage input end- of three-phase full bridge circuit;Bus voltage sampling module is fed back to the voltage value collected to MCU.The utility model compared with traditional electric vehicle high pressure initiative discharge scheme, with low cost, discharge effect stable and will not appear the problem of serious heating.

The present invention relates to a method for preparing a negative electrode active material, which includes mixing green coke particles, calcined coke particles, and a binder, and graphitizing the mixture through heat treatment to form an artificial graphite particle in the form of a secondary particle in which primary artificial graphite particles are bonded to each other, wherein an average particle diameter (D50) of the green coke particles is greater than an average particle diameter (D50) of the calcined coke particles.

This invention relates to the field of chemical power source electrode materials, and discloses a Mg-In-Ca-Y alloy anode material for magnesium-air batteries and its preparation method. The alloy comprises the following mass percentage composition: Mg: 97 wt.%, In: 2 wt.%, Ca: 0.5 wt.%, Y: 0.5 wt.%. The Mg-In-Ca-Y alloy exhibits a finely dispersed second phase, uniformly distributed twins, and columnar-oriented grains. This invention aims to develop high-performance magnesium-air battery anode materials and address the problem of insufficient discharge performance in existing magnesium-air batteries.

The application adopts silver nanowires with good conductivity to in-situ grow and modify carbon monofluoride materials, the silver nanowires are not simply adsorbed on the surface of the carbon monofluoride, but are inlaid and grown in the carbon monofluoride to form a conductive network, thus increasing the conductivity of the carbon monofluoride material, effectively improving the voltage hysteresis problem of the carbon monofluoride material, and improving the rate performance of the carbon monofluoride material. The carbon monofluoride electrode material with good conductivity and in-situ grown silver nanowires is applied to a lithium-carbon monofluoride battery, effectively improving the voltage hysteresis of the carbon monofluoride electrode, improving the platform voltage of the electrode, and the effect is remarkable. Compared with the carbon monofluoride electrode in the prior art, the voltage hysteresis and the platform voltage are greatly improved, and the discharge performance of the electrode is greatly improved.

The present application relates to air purification equipment technical field, disclose a kind of carbon fiber spiral electrode, plasma generating device and air purifier.The carbon fiber spiral electrode includes: spiral electrode, including carbon fiber bundle and the burr suppression structure being wound or wrapped in the outer periphery of carbon fiber bundle, spiral electrode is suitable for grounding;Inner electrode, inner electrode is wrapped with insulating layer, spiral electrode is spirally wound in the outer periphery of insulating layer, inner electrode is suitable for connecting alternating current power supply high voltage end.The carbon fiber spiral electrode of the present application can not only constrain carbon fiber bundle into bundle, effectively reduce the width of carbon fiber bundle, avoid carbon fiber bundle to be laid in insulating layer outside to lead to occupy the discharge area of carbon fiber spiral electrode, can effectively improve discharge effect.At the same time, since the burr suppression structure is wound in the outer periphery of carbon fiber bundle, it also will not pass through the surface of insulating layer to lead to occupy the discharge area of carbon fiber spiral electrode, which further improves the discharge effect of carbon fiber spiral electrode.