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48results about How to "High energy ratio" patented technology

Extended-range battery pack system of battery electric vehicle

The invention provides an extended-range battery pack system of a battery electric vehicle, and relates to the technical field of battery electric vehicles. The extended-range battery pack system of the battery electric vehicle comprises a main battery system and an extended-range battery pack system which are connected in parallel through a high-voltage switch, wherein the extended-range battery pack system adopts a voltage platform, and a battery model and the number of designed strings of the voltage platform are the same as those of the main battery system, so that the voltage platform is matched with the main battery system; and the extended-range battery pack system is configured with auxiliary management boards, and the auxiliary management boards are used for collecting voltage and temperature of each battery pack in the extended-range battery pack system, uploading data to a BMS (battery management system) mainframe of the main battery system, performing computation and judgment in the BMS mainframe, controlling the high-voltage parallel-connection switch and managing inputting and removal of the extended-range battery packs. The battery electric vehicle is powered by the battery packs at ordinary time, and keeps higher energy conversion efficiency; and when farther travelling is required, the extended-range battery pack system can be mounted at any time, due to the smaller configuration capacity of each extended-range battery pack, the vehicle cannot be driven by the extended-range battery pack system independently, and accordingly, the original battery packs and the extended-range battery packs are connected in parallel to supply power to the vehicle.
Owner:HEFEI GUOXUAN HIGH TECH POWER ENERGY

Uninterrupted power supply system and method with mixture of fuel cell and super capacitor

The invention discloses an uninterrupted power supply system and method with the mixture of a fuel cell and a super capacitor. The system comprises mains supply, a power conversion system, a backup power supply and a load. The fuel cell and the super capacitor are used as a backup power supply, when the mains supply is cut off, the small-capacity long-life supercapacitor can instantaneously supplypower to the load, a condition that the fuel cell directly drives the load to carry out cold start is avoided, the response time of the uninterrupted power supply system is reduced, and the safety and life of the fuel cell are improved. A mature average current mode, constant frequency control and voltage outer loop current inner loop double-closed-loop control are used by an active power factorcorrection circuit, the system has the advantages of a small volume, low power consumption, high efficiency, a high power factor, small total harmonic distortion an high safety and reliability, the uninterrupted power supply for a long time can be ensured, the control of a power tube of the invention is simple to realize, the numbers of diodes and power tubes are small, the cost is low, the efficiency is high, and the safety and reliability are high.
Owner:KUNMING UNIV OF SCI & TECH

High-efficiency direct-fired thermoelectric semiconductor power generator

A high-efficiency direct-fired thermoelectric semiconductor power generator comprises a heat collector, a radiator and a thermoelectric module. The heat collector with a collector cover (4) and fins (12) is used for collecting heat, the radiator (8) with fins and a fan (7) is used for radiating heat, the thermoelectric module (9) is mounted above the heat collector (10), graphite paper is stuck on both a cold face and a hot face of the thermoelectric module (9), the hot face of the thermoelectric module (9) is attached to the heat collector (10) through the graphite paper, the cold face of the thermoelectric module (9) is attached to the radiator (8) through the graphite paper, the fan (7) is mounted outside the radiator (8), and the thermoelectric module (9) is connected with a socket (6) through a lead to deliver electric energy to the outside. The high-efficiency direct-fired thermoelectric semiconductor power generator is stable in provided voltage, simple in structure, long in service life, small in size and convenient to carry and economically affordable, and applied to places without power supply and being badly in need of electric power, such as outdoors, remote areas and emergency situations where electricity can be directly generated only by requiring fire sources for supplying heat.
Owner:江西纳米克热电电子股份有限公司

Laminated flexible-package battery

The invention provides a laminated flexible-package battery which comprises an anode piece, a cathode piece, a membrane, an electrolyte and an external package structure, wherein the external package structure packages the anode piece, the cathode piece, the membrane and the electrolyte; the anode piece, the cathode piece and the membrane are laminated; the anode piece and the cathode piece are respectively located on the two sides of the membrane, and bonded with the membrane; the anode piece comprises a flaky anode current collector and an anode material layer; the anode material layer is arranged on two opposite surfaces of the anode current collector; the surface density of the anode material layer is 362-367g/m<2>; and the compaction density of the anode material layer is 2.38-2.40g/cm<3>. Compared with the prior art, the battery has a high-quality energy ratio, can instantly release high energy, and can adapt to quick charging and quick discharging of an electromobile; the service life of the battery is free from an influence of multiplying power charging and discharging; the high compaction density is adopted, so that the battery has good electron conductivity and quick ion actuation during heavy current discharging; discharging polarization is reduced; discharging platform voltage is increased; and multiplying power discharging performance is improved.
Owner:ZHEJIANG QIANJIANG LITHIUM TECH CO LTD

Cylindrical lithium ion power battery with high energy ratio and long service lifetime

The invention discloses a cylindrical lithium ion power battery with high energy ratio and long service lifetime. The height-diameter ratio of the cylindrical lithium ion power battery is 3.8-4.2. A battery core of the cylindrical lithium ion power battery comprises a positive coating, a positive tab, a negative coating, a negative tab and a diaphragm, wherein the diaphragm is arranged between a positive electrode and a negative electrode, the negative coating is wider than the positive coating and asymmetrically coats the positive coating, the distance, exceeding the front end of the positive coating, of the negative coating at a positive end is smaller than the distance, exceeding the front end of the positive coating, of the negative coating at a negative end, the battery core is accommodated in a closed space formed by an aluminum shell and a cover plate, the cover plate is sealed by dual rivets, the cover plate is provided with a groove at a position where pole posts are riveted, the groove is used for filling an insulation material at a riveting position, and a bevel angle is formed on the end surface of the aluminum shell. The invention provides the cylindrical lithium ion power battery with high energy ratio and long service lifetime, the capacity of a single battery is improved, meanwhile, the safety of the battery is considered; and the riveting mode of the cover plate and the end surface processing technique of the aluminum shell are optimized, the processing difficulty of the battery is reduced, and the production efficiency is improved.
Owner:上海电气国轩新能源科技(南通)有限公司 +1

Round thermoelectric generator of automobile exhaust semiconductor

The invention discloses a round thermoelectric generator of an automobile exhaust semiconductor. The thermoelectric generator consists of a thermoelectric module (3), a heat collector with bumped outer edges (4), a radiator (8), graphite paper (2) and a voltage stabilizing transformer (5). The inner hole sleeve of the heat collector with bumped outer edges (4) is locked on the outer wall of a round exhaust discharge pipeline (1); the two sides of the bumped part of the heat collector with bumped outer edges (4) are respectively fixed with a thermoelectric module (3); the cold surface and the hot surface of the thermoelectric module (3) are both labeled with graphite paper (2); the hot surface of the thermoelectric module (3) is glued with the bumped part of the heat collector (4) through the graphite paper (2), and the cold surface of the thermoelectric module (3) is glued with the radiator (8) through the graphite paper (2); the thermoelectric module (3) is connected with an automobile power supply system through the voltage stabilizing transformer. The temperature resistant of the power semiconductor generating device can reach 400 DEG C, besides, the round thermoelectric generator has the characteristics of stable voltage, high power, maintenance free, long service life, simple structure and convenient use and is suitable for the utilization of the automobile exhaust residual-heat.
Owner:江西纳米克热电电子股份有限公司

A novel structure for connecting a foil electrode tab winding type battery pole set and a cover plate

A novel structure for connecting a foil electrode tab winding type battery pole set and a cover plate is disclosed. The structure includes a positive electrode pressing plate, a negative electrode pressing plate, a positive electrode rubber mat, a negative electrode rubber mat, the cover plate, a positive electrode rivet, a negative electrode rivet, a positive electrode sealing mat, a negative electrode sealing mat, a positive electrode connecting claw, a negative electrode connecting claw, connecting pieces, and the pole set. The positive electrode rivet passes through the positive electrode sealing mat, the positive electrode connecting claw, the cover plate, the positive electrode rubber mat and the positive electrode pressing plate in order and then is riveted. The negative electrode rivet passes through the negative electrode sealing mat, the negative electrode connecting claw, the cover plate, the negative electrode rubber mat and the negative electrode pressing plate in order and then is riveted. The connecting pieces are connected to the pole set through ultrasonic welding, and then the connecting pieces of positive and negative electrodes are connected to the positive electrode connecting claw and the negative electrode connecting claw respectively through ultrasonic welding or laser welding. Beneficial effects of the novel structure include 1) a high battery energy ratio, 2) a low price and 3) high process implementability.
Owner:LISHEN (QINGDAO) NEW ENERGY CO LTD

Conversion circuit and device for converting lithium battery into dry battery

The invention provides a conversion circuit and device for converting a lithium battery into a dry battery. The conversion circuit for converting the lithium battery into the dry battery comprises a charging module, a discharging module, a lithium battery module and a charging and discharging detection module, the input and output ends of the conversion circuit for converting the lithium battery into the dry battery are coupled with a first input end of the charging module, an output end of the discharging module and a first input end of the charging and discharging detection module; the lithium battery module is coupled with an output end of the charging module, a first input end of the discharging module and a second input end of the charging and discharging detection module; a first output end of the charging and discharging detection module is coupled with a second input end of the charging module, and a second output end of the charging and discharging detection module is coupledwith a second input end of the discharging module. According to the invention, the repeated use of the battery can be realized, and the problems of relatively low overall benefit and serious environmental pollution of a disposable battery are solved.
Owner:SUZHOU XYSEMI ELECTRONICS TECH CO LTD
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