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| 2013 Lithium Battery Applications |
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Although the market is looking forward to the new energy vehicles, but can not break through key technologies, the lithium battery in the new energy vehicles in 2012 not yet in full swing. However, the rapid growth in demand for benefiting from mobile phones, tablet PCs and other portable appliances, lithium battery enterprises in 2012 achieved good results in this area. The performance of the lithium battery production companies presented a mixed picture.
And the outlook for the lithium battery industry in 2013, the market is more than that, and portable appliances demand or still maintain a rapid growth, will continue to drive the production of lithium batteries, lithium battery applications in the field of new energy vehicles remains to be seen.
Enterprise performance differentiation
In 2012, the production of lithium batteries accelerating trend, lithium batteries began to play a more important role in the environmental pressure.
Public data shows that, since 2012, the lithium battery production average monthly year-on-year growth rate of more than 25% higher than the previous year growth rate. In November, the output of lithium batteries continue to maintain a high growth year-on-year growth of 43.53%.
Formation driven by the growth in production of lithium battery manufacturer performance. Tian Qi Li industry forecast for full year 2012 production situation in 2012 three quarterly judgments Company 2012 annual changes in the net profit attributable to shareholders of listed companies by 0-30%.
Tian Qi Li pointed out in the report, from January to September 2012, the company achieved net profit attributable to ordinary shareholders after deducting non-recurring gains and losses of 31.7119 million yuan, a year-on-year growth of 21.89%, with the growth and sale of lithium products, the market demand The price rose steadily, will have a positive effect on the growth of the company's operating results.
Another lithium battery production the leading enterprises Ganfeng lithium industry is also forecast in the 2012 quarterly and annual results of changes in the range of 5% -35%, net profit of 57 million -7329 million interval change. Ganfeng Lithium pointed out in the description of the changes in performance, the sales revenue of sustained and stable growth, the main business profit growth.
But there are some involving lithium enterprise due to changes in upstream costs and other reasons, the performance is not satisfactory. According to the statistical software Flush with the concept of A-shares lithium enterprises totaled 67, of which 44 companies announced the results notice or results of Letters, a total of 19 companies Yejiyuzeng 25 corporate performance pre Less.
Fenghua Hi-Tech the the performance forecast that is expected to 2012 over the same period last year decreased by 51.39% -57.46%. Mainly due to the second half of 2012, subject to the impact of the Electronic Components market demand is lower than expected and the company's main product structure adjustment, the company's products production can play a shortage, while product prices fell, leading to the performance of the company fell.
The field of electric bicycles can be expected
2013, it is expected that the demand for portable appliances or still maintain a rapid growth, which will continue to drive the production of lithium batteries lithium battery applications in the field of new energy vehicles remains to be seen. "States Securities industry researcher Xiao Shijun told the China Securities Journal reporter.
According to the China Electronic Components Industry Association predicted that the next three years, the global mobile phone shipments will maintain a compound growth rate of more than 10%, while laptop shipments compound growth rate will exceed 14%. The next few years, consumer electronics lithium battery market is expected will be accompanied by high growth and stable growth of the laptop and the mobile phone market.
In addition, the lithium battery applications in the field of electric bicycles or improved in 2013. Recently, the Ministry of Industry No. 70, 2012 announcement Approved for electric bicycle lithium ion battery Specifications Dimensions industry standard, formally implemented from June 1, 2013. The standard from Dimensions, nominal voltage, installation, charging and discharging interface aspects of external, non-folding electric bicycle use lithium-ion battery products standardization.
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| 3月21日（木）18:10 | トラックバック(0) | コメント(0) | Hobby | 管理
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| Geared Motor Anti-oil Spill Measures |
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First, Change the structure is unreasonable because it is designed to cause instances of oil spills is a lot, and therefore in the design of the box and lid structure to ensure that it has sufficient rigidity.
Second, balanced deceleration the motor box inside and outside air pressure. Geared motor should equalizing device. The design of the vent and the vent plug must be reasonable.
Third, Reducer oil return should be smooth. Oil return fluency is to make possible outside the oil leakage unobstructed flow back into the box to go.
Fourth, to ensure the quality of the installation, According to the data of the survey report shows that many Geared Motor Oil spills are due to installation quality is not guaranteed.
Fifth, eliminate the the deceleration motor drain-source: to eliminate the drain-source, it is necessary to achieve the system maintenance classes before classes found oil spills deceleration find out the reasons, the use of appropriate ways to deal with, and prevent further leakage.
Sixth, prevent loosening, timely replacement of failed parts, some deceleration of poor working conditions of the dc motor manufacturer, the large vibration likely to cause the fastening screws loose seal structure.
Seventh, lubrication management : gear oil immersion too deep, gear improper lubrication, the scroll bearing grease diluted, the amount of oil and viscosity of the lubricant discomfort will cause the leak. , Winter gear motor maintenance, should be used in low viscosity lubricant, and the summer temperature is higher, should be used and the viscosity of the lubricant.
Eighth, the adoption of new technologies. With the development of science and technology, the various components of the material are a great development, if coupled with new products and general fluid lubricant the anaerobic adhesive seal can guarantee deceleration clip normal operation for several years without maintenance and refueling. Geared Motor Oil spills are a relatively common problem, treat the gear motor oil spill, should be dealt with according to different situations.
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| 3月15日（金）17:34 | トラックバック(0) | コメント(0) | Hobby | 管理
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| White LED Driver with Protection |
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White LED Driver with High Temperature Protection
Circuit driving a high-power white LED (WLED), open or short circuit fault occurs when the temperature is too high, and thermistor will turn off the LED. If you work outside the maximum operating temperature range any IC of life will be shortened. When the junction temperature exceeds a certain value, it will be permanently damaged. Philips Lumileds LUXEON high power LED module is manufactured in the thermally enhanced substrate, thus heating will be less. This material improves thermal performance, and allowed to continue working in the high-current, to meet the requirements of high-brightness lighting . However, for applications such as camera flash, is to avoid damage to the device power consumption continue to work, you need to provide additional thermal protection function.
The circuit in Figure 1 include a suitable camera flash applications charge pump regulator (IC1), the device for up to eight white LED (WLED) adjust the current. Paralleling all eight drives as a single 1W LUXEON Star high-output WLED module provides up to 480mA. When the open-drain input EN is pulled to ground, IC1 enters shutdown mode.
Circuit driving a high-power WLED, LED will turn off when the temperature is too high, and the thermistor open or short circuit fault
Can take advantage of the open-drain comparator (IC2), a thermistor and internal reference with a dual space is compact and extremely cost-effective to build a thermal shutdown circuit. VTHERM drops to below 1.2V internal reference voltage, the comparator A EN is pulled low to ground. When the high temperature of the thermistor (R2), will perform the operation. Comparator B is used to provide an open circuit failure protection function, that is, when the thermistor contact is opened, EN is pulled low. Thermistor open circuit failure occurs, VTHERM R1 pulled up, so that the comparator B to pull EN. Resistor divider R3-R4 sets the open threshold voltage, resistors R1 and R2 sets thermistor thermal shutdown threshold.
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| 3月6日（水）16:34 | トラックバック(0) | コメント(0) | Hobby | 管理
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