News

25

2018

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06


The charger is no longer far away from the plug

The power cord of the charger always trips you when you are busy, or ties a knot that cannot be untied, so the invention of the new wireless charger allows us to get rid of the tangled power cord. According to the British "Daily Mail" report, Japanese scientists have developed a new wireless charger and successfully demonstrated it. This new type of charger can charge devices up to 1 meter away, and with its emergence and popularity, we will one day completely say "break" with the power plug. Japanese scientists said that this wireless charger can charge a series of electrical devices such as mobile phones and electric vehicles. In fact, wireless charging systems are nothing new, and anyone who uses electric toothbrushes must have noticed that there is no wire connection between the toothbrush and the charger. But so far, wireless charging outside the lab has been limited to devices that use very little power, and the distance achievable between the device and the charger is negligible. In addition, the powered device must also be aimed at the charger, otherwise the charging process will not be completed smoothly. The new wireless charger is composed of a sending coil and a receiving coil, and does not depend on the prepared location for charging. The transmitter and receiver can detect each other and the former can be rotated to ensure proper placement. Nagano Nippon Radio said that when the transmission distance is 40 cm, the charging efficiency can reach 95%. They hope to increase the output from tens of watts to several kilowatts. For Japanese scientists, the real test now is how to reduce the size of this new charger

25

2018

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06


Sony's new 1.5A rapid hand-crank charger

If your phone is dead and you can't find an available power source for miles around, what's the first way to charge it? Sony told us at the launch of the new power bank a few days ago - do it yourself and have enough food and clothing. Sony released the hand-crank charger on the 20th of this month. We have already filled a mobile phone in 48 hours. Sony released the hand-crank USB charger and made a preliminary report. Now the time has come, this product is on sale in the Japanese market, the model is CP-A2LAKS, let's see how the effect of human flesh charging is. Because someone asked a strange question at the press conference, the personnel of Sony's battery marketing department answered the original intention of the "human flesh charger". In fact, the idea of ​​​​making a hand-cranked charger is very simple for Sony - Japan is a country prone to natural disasters, and all power sources that rely on cables to transmit energy are unreliable. At critical moments, you can only rely on yourself. Sony once launched a hand-cranked radio ICF-B03. The technology of the CP-A2LAKS hand-crank charger is in the same line as it. The selling point of this product is not only human flesh charging, but also has a large battery, which can be separated from the charger and used as a mobile power supply, so that it is not only a disaster prevention. A selling point. Regarding the question of "how many times per minute can an iPhone be fully charged", Sony said that the CP-A2LAKS has been optimized internally. It can be shaken 120 times per minute and lasted for three minutes to get 1 minute of continuous mobile phone talk time, which is not only economical and practical, but also It is also a good exercise for the user's arm strength. When charging, the handle sometimes becomes heavy, so imagine it as an uphill bicycle. Sony set the charging time to 120 times in 1 minute to make everyone not very tired. Of course, because the hand-crank charging is an emergency function, it is still relatively difficult for you to use it to fully charge an iPhone, and it is even more impossible to charge an iPad, laptop, etc., unless you are a superman. Another eye-catching feature of CP-A2LAKS is the fast charging function. Its maximum power supply can reach 1.5A, and it can fill a mobile phone in "only" 48 hours - of course, the premise is that your arm strength is strong. Connected to ordinary AC power, CP-A2LAKS only takes 130 minutes to fully charge a smartphone, which is 58% shorter than the charging time of commercially available ordinary power sources. If the phone itself supports the ultra-fast charging function, the charging time will be shorter. Sony Ni-MH battery pack launched at the same time at the press conference Sony's new power bank The price of the CP-A2LAKS hand-crank charger is 4,500 yen (about RMB 360), and it has been officially launched in Japan. To be honest, this price is really expensive, but if it can save your mobile phone at a critical moment, I believe there are still many students who are willing to pay for it, right?

25

2018

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06


Tongji Technology (600846): New Energy Battery Gold Mine That Has Not Been Excavated

With the improvement of people's living standards, the enhancement of environmental protection awareness, and the rise of traditional energy prices, the demand for reusable secondary mobile power sources will enter a period of rapid growth in the future, especially the good development prospects of the electric vehicle market will become It is an important development direction and one of the pillar industries of the new energy industry. Desai Battery (000049) has two consecutive daily limit prices in the first two trading days, and closed the daily limit again at the end of today. It can be said to be the biggest bull stock in recent trading days, and the biggest theme of the stock is new energy batteries. Therefore, investors may wish to focus on short-term stocks that also have the theme of new energy batteries but have not yet been fully explored by the market: Tongji Technology (600846). The company was restructured from the original 11 science and technology enterprises of Tongji University, a famous university, and was one of the first three university enterprises to go public in China. In 2007, the company reorganized the science and technology park, and merged Shanghai Tongji Yangpu Science and Technology Pioneering Park Co., Ltd. controlled by the company with the original Shanghai Tongji Science and Technology Park Co., Ltd., which was a shareholding of the company, so that the actual controller of the company, Tongji University, will be "National University". The brand of "Science and Technology Park" was injected into the company's holding subsidiary, and the capital of the surviving company was increased. With the acceleration of the GEM launch process, the company's assets will increase substantially. In recent years, my country's environmental protection industry has developed rapidly, with an average annual growth rate of 18%. It is predicted that in the next 10 years, the average growth rate of my country's environmental protection industry output value will be 15%-20%. Building an "environmentally friendly" society has become a basic national policy in China's "Eleventh Five-Year Plan". Tongji University is a first-class discipline in domestic universities in terms of water treatment. The company makes full use of the advantages of Tongji University and actively enters the field of environmental protection industry. The company is currently building an environmental protection project, which will establish two important water treatment bases, one south and one north. The investment of 7.6 billion yuan in the national environmental protection field, and the investment of more than 700 billion yuan during the tenth five-year period. The environmental protection industry is growing rapidly. It is expected that the environmental protection investment will increase to about 1.3 trillion yuan during the eleventh five-year plan period. There are huge economic benefits hidden in it! Therefore, Tongji Technology (600846) has a very broad prospect in the field of environmental protection. The proton membrane fuel cell fueled by hydrogen energy has become the biggest highlight of the energy revolution in the 21st century, and will solve the energy shortage of fuel vehicles in my country. From a long-term perspective, hydrogen energy will become a new energy source with the greatest potential. The "Beyond No. 3" fuel cell vehicle independently developed by Tongji University, the company's largest shareholder, has been successfully developed and entered the stage of industrialization, bringing huge imagination to the company. Space. The company has strong strength in environmental protection research. According to CCTV reports, the "Beyond No. 3" hydrogen fuel cell vehicle developed by Tongji University will serve the Olympic Games. As the Olympic Games are getting closer, the company can also share more profit points.

25

2018

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06


New technology makes lithium batteries more resistant to high temperature and improves safety

Recently, at the 57th Japan Battery Conference, Huawei's Central Research Institute Watt Laboratory announced that it has achieved a major research breakthrough in the field of lithium-ion batteries and launched the industry's first high-temperature and long-life graphene-based lithium-ion battery. The breakthrough mainly comes from three aspects According to Dr. Li Yangxing, chief scientist of Huawei's Watt Laboratory, the technological breakthroughs in graphene-based high-temperature lithium-ion batteries mainly come from three aspects: adding special additives to the electrolyte to remove trace amounts of water and avoid high-temperature decomposition of the electrolyte; The large single-crystal ternary material with high performance improves the thermal stability of the material; at the same time, the new material graphene is used to achieve efficient heat dissipation between the lithium-ion battery and the environment. Dr. Li Yangxing said, "The charge-discharge test in a high-temperature environment shows that, under the same working parameters, the temperature rise of the graphene-based high-temperature lithium-ion battery is 5°C lower than that of ordinary lithium-ion batteries; the capacity retention rate is 2000 cycles at 60°C. Still more than 70%; storage at 60°C for 200 days, the capacity loss is less than 13%". It is reported that this research result will bring innovation to the energy storage business of communication base stations. The working life of the external base station using the high-temperature lithium-ion battery in hot areas can reach more than 4 years. Graphene-based lithium-ion batteries will also help electric vehicles last longer in high-temperature environments, and drones can fly safely under high-temperature heat. It is understood that the current "lithium battery" is a type of battery that uses lithium metal or lithium alloy as the negative electrode material and uses a non-aqueous electrolyte solution. Lithium batteries can be roughly divided into two categories: lithium metal batteries and lithium ion batteries. Industry analysts believe that Huawei's graphene-based lithium-ion batteries are still lithium-ion batteries. Longer battery life And at the 56th Japan Battery Conference last year, Huawei's Watt Lab released the results of fast charging technology that can fill 48% of a 3000mAh battery in 5 minutes, which has attracted widespread attention from the lithium battery and mobile phone industries. According to Dr. Li Yangxing, Huawei's fast-charging battery has been commercialized, and will officially release a super-fast-charging mobile phone at the end of December this year. Regarding Huawei's launch of the industry's first high-temperature and long-life graphene-based lithium-ion battery, the industry believes that if the battery is used in conjunction with fast charging technology, it will greatly improve the battery life of smartphones and fully satisfy the needs of many mobile phone users. After a variety of applications, the mobile phone can still be kept charged for a long time. At the same time, because Huawei's new technology makes lithium batteries more suitable for high-temperature environments, lithium batteries used in technology products such as mobile phones and notebook computers are more "high temperature resistant" and their safety is improved. It is understood that there are many problems with smart phone batteries at present, because the mainstream fast charging technology is generally implemented by increasing the voltage, which can easily lead to overheating of the battery and bring about the charging safety hazards of mobile phones and laptops. Many well-known mobile phone manufacturers and notebook manufacturers have recalled because of battery problems. In April 2016, Japan's Toshiba Corporation announced a global recall of 100,000 notebook computer products. The reason for the recall was the battery problem. Toshiba said that the recalled notebook computer batteries have a hidden danger of overheating, and there have been four reports of battery overheating and melting. In June this year, HP Technology filed a recall plan with the General Administration of Quality Supervision, Inspection and Quarantine, recalling some HP notebook battery packs produced from March 2013 to May 2014. The number of battery packs affected in mainland China is 6,726; this year 9 In January, Samsung's Note7 was recalled worldwide due to a burning incident caused by overheating of the battery. Some analysts believe that when the lithium battery is damaged by external forces such as internal short circuit and excessive temperature, it is easy to catch fire and explode in an instant.

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