Tianjin Lishen Battery Joint Stock Co.

Tianjin, China

Tianjin Lishen Battery Joint Stock Co.

Tianjin, China
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Hou Y.,Tianjin University | Li H.,Tianjin University | Liu C.,Tianjin Lishen Battery Joint Stock Co. | Zhang L.,Tianjin Polytechnic University
Transactions of Tianjin University | Year: 2017

With the appearance of RGB-D camera, the field of three-dimensional (3D) reconstruction receives more and more attention. In this paper, we present an optimization approach to produce high-quality textured 3D models based on the real-time 3D reconstruction system. The resulting models of real-time texture reconstruction often suffer from blurring, ghosting, and other artifacts. Our approach addresses this texture quality problem using blur detection and an optimized weight function. Experimental results demonstrate that our approach can improve the quality of textured 3D models by reducing the blur and ghosts on the model surface. © 2017 Tianjin University and Springer-Verlag GmbH Germany

Tian Y.,Tianjin University | Wang S.,Tianjin University of Technology and Education | Ren K.,Tianjin Lishen Battery Joint Stock Co.
Bandaoti Guangdian/Semiconductor Optoelectronics | Year: 2017

A 10 bits on-chip time-digital-converter(TDC) based on delay-locked-loop(DLL) and synchronized counter structure was designed. In two-step hierarchical way, synchromized counter generates 6 bits code which quantize coarsely the integral multiple of clock cycle, and a high performance differential DLL was adopted, which outputs 16 fixed-phase-shift clock to quantize finely the residue smaller than a clock cycle, with 4 bits thermometer code. This structure can provide better time resolution, dynamic range and conversion speed. Compared with traditional sub-gate delay TDC, it costs less area and converts faster, and is immuned from process, voltage and temperature changes. Spectre simulation results show its dynamic range of LSB @62.5 ps and MSB 64 ns, which is suitable for the time-correlated single photon counting(TCSPC) applications. © 2017, Editorial Office of Semiconductor Optoelectronics. All right reserved.

Zhang N.,Tianjin Lishen Battery Joint Stock Co. | Li Y.,Tianjin Lishen Battery Joint Stock Co.
Corrosion and Protection | Year: 2015

Electrical property test, the SEM, ICP, XRD and EDS were used to study the lithium-ion power batteries; including decomposed and normal batteries with corroded aluminum casing, and the corrosion conditions were discussed. It was found that the cycle life, storage and discharge rate of corrosion batteries had a rapid declining. When the anode tab was contacted with the aluminum inner wall of aluminum lithium-ion battery, corrosion reaction might occur after more than six months of placement or using, the corrosion reaction occurd in the aluminum inner wall first, and then gradually developed into the outer aluminum. The main corrosion products were Li2CO3 and aluminum salts. © 2015, Shanghai Research Institute of Materials. All rights reserved.

Chen M.,Key Laboratory for Green Chemical Technology | Wang C.,Key Laboratory for Green Chemical Technology | Niu X.,Tianjin Lishen Battery Joint Stock Co. | Zhao S.,Key Laboratory for Green Chemical Technology | And 2 more authors.
International Journal of Hydrogen Energy | Year: 2010

Direct carbon fuel cell (DCFC) is a kind of high temperature fuel cell using carbon materials directly as anode. Electrochemical reactivity and surface property of carbon were taken into account in this paper. Four representative carbon samples were selected. The most suitable ratio of the ternary eutectic mixture Li2CO3-K2CO3-Al2O 3 was determined at 1.05:1.2:1(mass ration). Conceptual analysis for electrochemical reactivity of carbon anode shows the importance of (1) reactive characteristics including lattice disorder, edge-carbon ratio and the number of short alkyl side chain of carbon material, which builds the prime foundation of the anodic half-cell reaction; (2) surface wetting ability, which assures the efficient contact of anode surface with electrolyte. It indicates that anode reaction rate and DCFC output can be notably improved if carbon are pre-dispersed into electrolyte before acting as anode, due to the straightway shift from cathode to anode for CO3 2- provided by electrolyte soaked in carbon material. © 2009 Professor T. Nejat Veziroglu.

Bai Y.,Beijing Institute of Technology | Wu F.,Beijing Institute of Technology | Yang H.-T.,Tianjin Lishen Battery Joint Stock Co. | Zhong Y.,Patent Examination Cooperation Center | Wu C.,Beijing Institute of Technology
Advanced Materials Research | Year: 2012

Spinel LiMn 2O 4 was modified with Y 2O 3 coating by a chemical process. The crystal structures of the as-prepared samples were investigated by X-ray diffraction (XRD). The charge/discharge characteristics of the modified samples were evaluated at different rates between 3.0 and 4.4V. The discharge capacities of 2.0 wt.% Y 2O 3-coated LiMn 2O 4 are 116 mAh·g -1, 99.7mAh·g -1, 93.3mAh·g -1 and 82.9mAh·g -1 at 0.1C, 0.5C, 1C and 2C rates (at 20°C). The cycle abilities improvement of the spinel LiMn 2O 4 coated with Y 2O 3 are demonstrated at elevated temperature (55°C) and high rates (2C). From the analysis of electrochemical impedance spectroscopy (EIS), the improvement of cycle ability may be attributed to the suppression on the formation of the passivating films and the reduction of Mn dissolution, which result from the surface modification with Y 2O 3.

Zhao L.,Beijing Institute of Technology | Zhao L.,Tianjin Lishen Battery Joint Stock Co. | Wang W.,Beijing Research Institute of Chemical Defense | Wang A.,Beijing Research Institute of Chemical Defense | And 4 more authors.
Journal of Power Sources | Year: 2013

A novel polymer, poly(5-amino-1,4-dyhydroxy anthraquinone) (PADAQ) as the cathode material of lithium batteries is synthesized by a facile oxidation process and characterized by FT-IR, MS, elementary analysis, XRD, SEM and electrochemical method. The results show that the as-prepared polymer solves the problems of dissolution and crystallization of its monomer, 5-amino-1,4-dyhydroxy anthraquinone (ADAQ), thus maintains the stability of the electrode structure successfully. At the cutoff voltage of 1.5-3.7 V, the initial discharge capacity of PADAQ is 101 mAh g-1 at the current density of 400 mAh g-1. After 14 cycles, the capacity increases to 143 mAh g-1, and maintains 129 mAh g-1 after 50 cycles, which shows an improved cycle performance compared to its monomer. Even at the high current density of 1400 mAh g-1, its capacity still reaches 95 mAh g-1, indicating a high rate capacity. The results also show that PADAQ is sensitive to discharge depth. When discharged to 1.0 V, its cycle performance is poor. © 2013 Published by Elsevier B.V.

Huang M.,Tianjin Lishen Battery Joint Stock Co. | Kong L.-L.,Tianjin Lishen Battery Joint Stock Co. | Gao Y.-T.,Tianjin Lishen Battery Joint Stock Co.
ECS Transactions | Year: 2016

Thermal property is one of the key considerations for lithium ion battery design and usage in many applications. In order to evaluate the thermal performance of commercial lithium ion battery, thermal shock and high temperature storage tests were performed with the pouch type cells. The resistance was measured with electrochemical impedance spectroscopy (EIS) both before and after the tests. It is revealed that RSEI decreased after thermal shock, but increased after high temperature storage. Meanwhile, Rct increased after both tests but with quite different amplification dependent on the test method. The total resistance also increased after the tests, however, the Rt increase was highly dependent on the cell processing technique and test voltage. This work is expected to provide some detailed data and analysis for the thermal performance evaluation, which could help to further understand the degradation mechanism of lithium ion battery under service conditions. © The Electrochemical Society.

Jin H.-F.,Tianjin Lishen Battery Joint Stock Co. | Gao J.-K.,Tianjin Lishen Battery Joint Stock Co.
30th International Battery Seminar and Exhibit 2013: Primary and Secondary Batteries - Other Technologies | Year: 2013

• As the demand for the battery with higher voltage & higher specific capacity increases gradually, Li-rich cathode material is paid more attentions; • Compared with LCO, Li-rich has high energy density and low cost; • Some issues, such as gas revolution; lower rate capability and cycle stability are needed to be solved; • Further structural analysis is required to improve material performance.

Tianjin Lishen Battery Joint Stock Co. | Date: 2015-09-15

Batteries, electric, for vehicles; battery boxes; plates for batteries; high tension batteries; battery chargers; galvanic cells; batteries, electric; solar batteries; carbon nano tubes, namely, tubular carbon molecules used in extremely small scale electronic and mechanical applications.

Zhou J.,Tianjin LishenBattery Joint stock Co.
33rd Annual International Battery Seminar and Exhibit: Advanced Battery Technologies for Consumer, Automotive and Military Applications | Year: 2016

Lishen has clear targets and product roadmaps for CE and xEV batteries. Lishen has showed progresses in both CE and xEV batteries and technologies.Lishen is becoming a reputational global mobile energy solution provider.

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