logo
Send Message
Shenzhen Times Superior Technology Co., Ltd.
products
news
Home >

China Shenzhen Times Superior Technology Co., Ltd. Company News

Will wireless charging of mobile phones cause cancer?

According to reports from World Wide Web, the latest "iPhone" scheduled to be released by Apple in the United States in 2017 may use a wireless charging module. Some people say that radiation from ordinary mobile phones must be prevented, let alone wirelessly charged mobile phones! Some people are even more worried about whether the radiation produced by wireless charging can cause cancer? To this end, the reporter interviewed Zhou Hongzhi, associate professor at the School of Applied Mathematics and Physics at Beijing University of Technology.   1. What does wireless charging of mobile phones mean? The principle of wireless charging technology is actually very simple. Zhou Hongzhi said, "The basic principle of the so-called wireless charging technology is the same as that of a transformer. It is the principle of 'electricity generates magnetism and magnetism generates electricity' that we learned in middle school physics class. With Take a mobile phone as an example. There is a magnetic core in the charger of the mobile phone, and a coil is wound around it, which can convert electricity into an electromagnetic field. The electromagnetic field can spread in space. At the same time, the mobile phone also has a corresponding receiving coil. This receiving coil comes into contact with the charging After the electromagnetic field emitted by the device is processed by a certain circuit, the mobile phone can be charged." 2. Can the radiation produced by wireless charging of mobile phones cause cancer? Zhou Hongzhi said, "Wireless charging of mobile phones will produce a certain amount of radiation, but as long as the quality is guaranteed and used correctly, this radiation is almost harmless to the human body and will not cause cancer. On the one hand, during wireless charging, the magnetic field is It is closed and has very little radiation to the outside world; on the other hand, as long as it is a product that has passed the national 3C certification, it will undergo strict inspection, and the radiation it generates must also meet certain standards and will not cause harm to the human body." 3. Will the radiation generated by various electronic products overlap? With the development of science and technology, people are exposed to more and more electronic products: computers, mobile phones, tablets, etc. Some people worry that electronic products will all emit radiation? Will these radiations be superimposed together to produce the effect of "1+1=2" or even "1+1>2"? Zhou Hongzhi said, "Electronic products all radiate, but as long as they meet the national 3C certification standards, they will not cause harm to the human body. As for radiation superposition, very strict conditions need to be met. In daily life, '1+1=2' Or there is almost no case of '1+1>2'. The radiation generated by various electronic products will interfere with each other, but will not superimpose each other. In many cases, they will even cancel each other. For example, many people throw objects into the lake at the same time. Pebbles, each pebble will form water waves, but these water waves will not superimpose into huge waves, and the same reason why radiation does not superimpose." 4. Why is the technology for wireless charging of mobile phones not popular? The technology of wireless charging for mobile phones has always been expected by people, but it has not been popularized so far. Is it because the cost is too high or it is technically difficult to realize? Zhou Hongzhi said, "Technically speaking, wireless charging of mobile phones can be achieved, and the cost is not high. The reason why this technology is not popular is mainly due to issues with standards and requirements, such as which specifications the charger should use. , how to seal the magnetic field, etc., these standards have not been officially released yet." However, Zhou Hongzhi said that once the relevant standards are officially released, the technology of wireless charging of mobile phones will soon become popular.

2024

01/24

Some types of wireless charging solutions

The technology of wireless charging has developed to the present and has been very mature, and the frequency of application is also very high. It has provided a lot of help to many fields, provided charging support in many areas, and better guaranteed the charging efficiency. Efficiency and convenience have helped many industries. So what types of wireless charging solutions are there?   1. Suitable for use on a variety of devices It is precisely because the technology of wireless charging is indeed excellent that it will bring good support and help to many industries. The use of wireless charging solutions can also be used in many fields, including unlimited charging pads, unlimited car chargers, Wireless mouse chargers, unlimited desk lamps, etc. can all be used with confidence using this technology. The charging experience is very good and can be used with confidence.   2. Magnetic field resonance wireless charging Among the choices of wireless charging solutions, magnetic field resonance wireless charging technology is also relatively common. This technology is mainly suitable for completing a process of energy propagation in a relatively large range. It has a good degree of freedom and charging efficiency, and charging The process reliability is also extremely high, supporting many devices to be charged at the same time.   3. Radio wave charging technology Many industries are now paying close attention to wireless charging technology, mainly because the charging services provided are indeed of high quality. Secondly, there are many types of wireless charging solutions. Radio wave charging technology is a common one and a relatively mature technology. It mainly uses reflected radio wave energy to complete a receiving and transmitting process, forming a wireless charging process. The transmission distance is medium but the efficiency is very fast, and it is suitable for a wide range.

2024

01/23

Wireless charging Way of working

Electromagnetic induction This is the most common way that wireless chargers work. It uses the principle of electromagnetic induction to generate current through electromagnetic induction between the primary and secondary coils, thereby realizing the transfer of energy within the space. This wireless charger's The implementation method has been promoted by the Wireless Charging Alliance.  radio waves Radio waves are a relatively mature wireless charging method for wireless chargers at this stage. Its working principle is to use miniature and efficient receiving circuits to capture radio waves in space, and then convert electromagnetic energy into stable electrical energy. There are already companies claiming to be able to wirelessly charge electronic devices smaller than a cellular phone from a few meters away.    electromagnetic resonance This is a wireless charging technology that is still in the research and development stage. This technology is mainly researched by a team led by a physics professor at the Massachusetts Institute of Technology. Intel engineers use this technology as a basis to achieve a power supply that is about 1 meter away from the power source. A 60-watt light bulb lights up about 10 feet away and has a transmission efficiency of 75%. Intel engineers say the next goal will be to use this wireless charging technology to charge modified laptops. However, in order to achieve this goal, it is also necessary to solve the interference and impact of electromagnetic fields on other components in the computer.

2024

01/22

What are the mobile phones with wireless charging?

With the continuous advancement of technology, wireless charging technology has become an important function in modern life. By eliminating the need for a charging cable, we can charge our phones more conveniently. This article will introduce in detail the brands and models of mobile phones currently on the market that support wireless charging, and explore the working principles and advantages of this technology.   Mobile phone brands and models that support wireless charging Currently, many mobile phone brands on the market have launched mobile phones that support wireless charging. Here are some of the well-known brands and their related models: 1. Apple iPhone series: Starting from iPhone 8, Apple mobile phones begin to support Qi wireless charging technology. Currently, it includes iPhone 8, iPhone 8 Plus, iPhone X, iPhone XS, iPhone XS Max, iPhone XR, iPhone 11, iPhone 11 Pro, iPhone 11 Pro Max, iPhone SE (second generation), iPhone 12, iPhone 12 mini, Apple phones including iPhone 12 Pro and iPhone 12 Pro Max support wireless charging. 2. Samsung Galaxy series: Samsung mobile phones use the Qi wireless charging standard, and almost all flagship models of the Galaxy series support wireless charging. For example, Galaxy S21, Galaxy S20, Galaxy Note 20, Galaxy A71, etc. 3. Huawei Mate series and P series: Huawei’s flagship models in recent years, such as Mate 40 Pro, Mate 30 Pro, P40 Pro, etc., all support wireless charging. They use Huawei's own SuperCharge wireless fast charging technology. 4. Xiaomi MIX series and Mi series: Some of Xiaomi’s flagship models also support wireless charging, such as Mi 11 series, Mi 10 series, Mi 9 series, etc. 5. OPPO Find series and Reno series: Some flagship models of OPPO mobile phones, such as Find X3, Reno 6 Pro, etc., also support wireless charging.   How wireless charging works Wireless charging technology is mainly based on the principle of electromagnetic induction. By establishing an electromagnetic field between the phone and the charger, electrical energy is converted into magnetic energy and transmitted through the inductive coil. The receiving coil built into the mobile phone receives the energy transmitted from the charger and converts it into electrical energy for charging the mobile phone. Advantages of wireless charging Wireless charging technology has many advantages over traditional wired charging methods: First of all, wireless charging avoids the annoyance of charging cables and no longer requires frequent plugging and unplugging of charging cables, making charging more convenient. Secondly, wireless charging can reduce the wear and damage of the charging interface and extend the service life of the mobile phone. In addition, wireless charging technology also has a certain degree of safety. It transmits energy through electromagnetic induction, effectively avoiding safety hazards such as electric shock.   Finally, the popularity of wireless charging also helps reduce the generation of electronic waste and is environmentally friendly.   Extended Q&A: 1. Does wireless charging have any impact on the battery life of mobile phones? Wireless charging doesn’t significantly impact your phone’s battery life. The charging management system of modern mobile phones has been optimized for wireless charging, controlling charging speed and current to protect battery life. 2. What wireless charger brands are there? There are many well-known wireless charger brands on the market, such as Xiaomi, Huawei, Apple, Samsung, Anker, etc. These brands provide wireless chargers of various types and powers for consumers to choose from. 3. Is wireless charging slower than wired charging? Currently, wireless charging may be slightly slower than wired charging. However, with the advancement of technology, the speed of wireless charging is also increasing, and it is expected to reach a level comparable to or even faster than wired charging in the future.   This article discusses the brands and models of mobile phones that support wireless charging, introduces how wireless charging works and its advantages, and answers some related questions. The popularization of wireless charging technology will further improve our charging experience and bring more convenience to modern life.

2024

01/19

Wireless charging market

With the rapid development of technology, wireless charging technology is becoming a part of our daily lives. From mobile phones to smart home devices, wireless charging application scenarios are becoming increasingly abundant, bringing consumers an unprecedented convenient experience. This article will take an in-depth look at the trends and prospects of the wireless charging market and how it is changing the way we live and work.   1. Wireless charging market trends Market demand grows With the popularity of smart devices, people's demand for charging convenience is growing. The emergence of wireless chargers has changed the constraints of traditional wired charging methods and brought consumers a new charging experience. Therefore, the demand in the wireless charging market continues to expand, providing entrepreneurs with a broad market space. Technology continues to innovate In recent years, wireless charging technology has made breakthrough progress, charging efficiency has been continuously improved, and application scenarios have become increasingly rich. From mobile phones and tablets to smart homes and electric vehicles, the application fields of wireless charging technology are constantly expanding, indicating the huge potential of this technology.   2. Master the advantages of wireless charger technology Leading technology Mastering wireless charger technology means you have core competitiveness in the market. With the continuous innovation of technology, you will have the opportunity to stand out in the fierce market competition and become the leader in the industry. Reduce costs The production cost of wireless chargers is gradually decreasing with the advancement of technology, providing entrepreneurs with more profit margins. Master wireless charger technology and you will have the opportunity to enter the market at a lower price and win more consumers. Innovative products Mastering wireless charger technology, you can develop more innovative products to meet the different needs of consumers. For example, combining the Internet of Things, artificial intelligence and other technologies to create new application scenarios such as smart homes and vehicle charging, bringing consumers a more convenient life experience.   3. Entrepreneurship Opportunities and Benefits Huge market potential The rapid growth of the wireless charging market provides unlimited business opportunities for entrepreneurs. Whether it is the mobile phone accessories market or the smart home and electric vehicle fields, there is huge room for development. As long as you have innovative thinking and action, you can get a share of this market.   Large profit margin With the continuous development of wireless charging technology, production costs are gradually reduced, and market demand continues to grow. This means you have more opportunities to make high profits. By mastering wireless charger technology, you can reduce production costs and improve product quality, thereby becoming more competitive in price and winning more market share.   Technical support and training Mastering wireless charger technology not only means that you can produce high-quality products, but also means that you can provide consumers with professional technical support and training services. By providing customers with high-quality services, you can enhance customer stickiness, increase brand influence, and lay a solid foundation for the long-term development of your company.   Many opportunities for cooperation Master wireless charger technology and you will have the opportunity to cooperate with many companies. Whether you are cooperating with well-known brands to develop new products or providing technical support and solutions to small and medium-sized enterprises, your entrepreneurial journey will bring more opportunities and challenges.   Low threshold for starting a business Compared with other high-tech industries, the threshold for starting a business in mastering wireless charger technology is relatively low. As long as you have a certain amount of capital and personnel investment, plus professional technical and marketing guidance, you are likely to succeed in this market. In addition, the government has also provided many support policies for technological innovation enterprises, adding more guarantees to your entrepreneurial journey.

2024

01/18

Wireless charging technology talks about technical principles

With the development of science and technology, various electronic products have emerged: mobile phones, watches, psp, mp3, iPod... They provide wireless convenience for our lives and greatly enrich our spare time life. However, various This kind of charger gives us a headache! The charger models of various electronic products are different, making it difficult to achieve good compatibility. However, the development of wireless charging technology has provided us with the best solution for charging portable electronic products, allowing all electronic products to be charged at any time as long as there are wireless charging equipment, greatly reducing our burden. Wireless charging theory is not a new technology. There have been many laboratories conducting research on this technology for hundreds of years. Due to the low efficiency of wireless charging, extremely short distance, poor safety and other factors, the promotion of this technology has been hindered. At this stage, the emergence of certain new materials and technological advancement have overcome the above shortcomings to a certain extent. The popularity of small household appliances and handheld terminals has provided a broad space for the marketization of low-power wireless charging, making it more suitable for the requirements of modern life and improving the quality of life. The development of the new energy industry has further promoted the innovation of this technology.   1. Development of wireless charging technology   In the 1830s, Faraday discovered that changing magnetic fields could produce electric current; then Tesla, one of Edison's assistants, also proposed the idea of wireless power transmission; Professor Xu Shuyuan from the Department of Electronic Engineering of City University of Hong Kong successfully developed a "wireless battery charging platform" in the early years, which requires the product to be in contact with the charger. It mainly uses the principle of near-field electromagnetic coupling. In 2007, Marin Soljasik and others from the Massachusetts Institute of Technology in the United States made new progress in wireless power transmission. They used a power supply two meters away to light a 60-watt light bulb "remotely". . On September 1, 2010, the Wireless Power Consortium (WPC), the world's first standardization organization to promote wireless charging technology, announced in Beijing that the Qi wireless charging international standard would be the first to be introduced into China. The WPC standard defines the types of inductive coupling (coil structures) and communication protocols used by low-power wireless devices. Brett Lewis, vice chairman of the Wireless Charging Alliance, said that there are nearly 60 alliance members, including Energizer, LG Electronics, Nokia, etc. Beijing time on November 9th, according to foreign media reports, the British company haloipt recently successfully implemented wireless charging for electric vehicles in London using its latest inductive power transmission technology. At this point, wireless charging technology adopts a unified industrial standard. In the next few years, mobile phones, MP3 players, digital cameras, notebooks, etc. will all use the same wireless charger. It can be said that certain industry standards have initially been formed in this field. The wireless charger currently on the market was invented by a British company. It looks like a mouse pad and is equipped with a dense array of small coils, which can generate a magnetic field and transmit energy to electronic devices with receiving coils for charging. , this receiving device can be easily attached to electronic devices like chewing gum. But so far, wireless charging technology still cannot be implemented well on high-power devices.   2. Principles of wireless charging technology   Currently, there are three main methods of wireless charging: electromagnetic induction, radio waves, and electromagnetic resonance.   3. Industry status of wireless charging products   As we all know, many people think that we live in a world surrounded by cables, which is troublesome, unsightly and environmentally friendly. This is why the idea of wireless charging was born. Although so far, various research institutions at home and abroad seem to have achieved There has been some progress, but it has always stayed in the low-power, short-range charging mode, and most international wireless charging research is developing in the direction of high-power and long-distance. Perhaps greater progress will be made in 20 years. Success, but no one can predict the future development. Scientists and engineers have long known that transmitting electrical energy does not necessarily require wires to be in physical contact at all times, such as the coils in electric motors and transformers. They can transfer energy to each other through the phenomenon of electromagnetic induction. Scientists have also discovered that radio waves contain electromagnetic radiation, but the efficiency of transferring energy from one point to another through traditional electromagnetic radiation is very low, because electromagnetic waves will spread around in the air, causing most of the energy to be lost. And this approach is also very dangerous, especially when the amount of electromagnetic radiation exceeds the range that the human body can bear. Moreover, wireless charging systems that use electromagnetic waves to transmit energy also have two major problems: first, the transmitter is still emitting energy when there is no device to be charged on the charging device, which will cause a waste of energy if it is not used for a long time; second, When a metal foreign object is placed on the transmitter, the electromagnetic waves will heat it, which will inevitably damage the device, or even cause a fire. Secondly, some wireless charging products have been unable to be put on the market in batches after perfect performances. Why? Because any electronic component must undergo precise debugging and calibration by professionals before leaving the factory. Similarly, if wireless charging products want to achieve a good electromagnetic resonance effect to achieve power transmission, they must undergo precise adjustment. In such a situation Under such circumstances, mass production will become very difficult. Finally, the cost of wireless charging products developed now is many times more than the price of an ordinary charger. No matter how advanced the product is, it is just a charging device after all, so if you want to promote it, you must work hard to reduce costs.    4. Exploration of new directions in wireless charging   First, to improve efficiency in a wireless charging system, it is necessary to minimize the magnetic energy loss between the transmitting and receiving coils. To achieve this goal, high-frequency and high-current equipment can be added to the transmitting coil to boost the transmit signal. By establishing an intelligent frequency following system and cooperating with LC resonance, a high magnetic potential magnetic field can be emitted. Due to the existence of high magnetic potential , can achieve the purpose of minimizing magnetic leakage, and install a certain magnetic field automatic search device in the receiving part to make the system work as efficiently as possible. And a certain magnetic field shielding device can be installed to reduce the harm of electromagnetic waves to the human body, and a certain coil can be wrapped in the shielding device to recover the magnetic energy that is not accepted by the receiving device, thereby improving the efficiency of the equipment. To solve the second problem, it can be achieved in this way: install a magnet on the receiving end, and only start sending energy when the transmitting end senses the magnetic force. This method is simple and feasible, because no one will accidentally put a magnet on the transmitter. Let it burn down on the device. To solve the mass production problem, the design of the wireless charging system must first focus on the resonance part so that the device can self-adjust. Only in this way can the mass production problem be solved. And if you want to reduce costs, you must do it in the form of chips, so that it is possible to reduce costs as much as possible. Furthermore, in view of the industry reality that most of the current wireless charging research focuses on high power and long distance, my opinion is that the focus can be slightly shifted and the wireless charging technology should be made as refined as possible. Since it is still Wireless realizes high power and long distance transmission, so why not develop into low power and medium distance? In fact, if this goal can be achieved, its application in the future electronic market is still very promising. We can use this technology to transform existing batteries. In various fields where disposable batteries are currently used, secondary batteries plus wireless charging can be used to reduce the use of disposable batteries. Since the battery is equivalent to a ball of metal, we can place a receiving coil inside the battery. The alternating magnetic field generated by the transmitting coil will cause the metal in the battery to generate eddy currents, which is converted into heat. At the same time, a reverse magnetic field is generated to offset the generation of the transmitting coil. The strength of the magnetic field causes the voltage received by the receiving coil to drop. In order to reduce the eddy current in the battery, a material that blocks the magnetic field must be placed between the battery and the receiving coil. This material is often called a "magnetic shielding material." However, the current research on this material is mainly focused on the environment with a strong magnetic field of 50Hz. There is almost no research on the strong magnetic field around 100KHz used in wireless charging, so this may be a direction for future development. Overall, wireless charging can be used in many imaginable and unimaginable fields. What is currently achievable include: low power and low energy consumption electronic communication products and office products, such as mobile phones, PDAs, etc., as well as furniture products and low energy consumption home appliances. The application fields that are currently being expanded include transportation, such as electric vehicles, EMUs, etc. Future long-term target areas include: space stations, satellites, warships and aircraft carriers, etc. It can even collect ionospheric energy from clouds and wirelessly transmit it to places that need energy, and it can be used in a new generation of international military fields that are completely environmentally friendly and energy-saving. Furthermore, in the specific promotion of products, another problem that needs to be faced is the formulation of industry standards. At present, there are no other industry standards except WPC. Therefore, in order to achieve final universality, all research directions should finally achieve a certain degree of "grand unification" and have a relatively mature and complete set of standards and protocols, so that the entire industry can truly Only by realizing universality can it be more convenient for users. While bringing wireless convenience to customers, it can greatly reduce the number of wired chargers and reduce the heavy pressure of electronic waste on the environment. It is the real convenience of our lives. Cleanliness.   5. Conclusion   The development of wireless charging technology is bound to bring wireless convenience to our lives. Perhaps some time in the future, all kinds of mobile phones, tablets, razors, cameras, toys, etc. around us will say goodbye to various chargers, and our lives will no longer be interrupted by various wires. At that time, we only needed to place our electronic products on a tablet-sized board to charge them. We should believe that under the background of the rapid development of existing technology, wireless charging technology should still be able to make greater progress in the next few years, so stay tuned.  

2024

01/12

How to choose a good wireless charger?

How to choose a good wireless charger? Sorted out 5 elements:   1) Output power: The output power reflects the theoretical charging power of the wireless charger. The current entry-level wireless charging is 5w, but this kind of martial arts charging is slow. Currently, the output power that is more supported is 10w. Note: Heat will be generated during the wireless charging process. When choosing, you can choose a wireless charger with a fan for cooling.   2) Compatibility: Currently, anything that supports QI certification can basically support wireless charging. However, many brands now launch their own brand of wireless fast charging protocols, so you should pay attention when choosing. If you are pursuing For wireless fast charging, you must know whether it is compatible with the wireless fast charging protocol of your own mobile phone brand.   3) Safety: To put it simply, it means whether it will be dangerous, whether it will be short-circuited, whether it will explode. Safety is one of the criteria to test whether a wireless charger is good or bad (it must also have a foreign object detection function. In life, it is easy for some small metals to fall into the charger, which can easily cause high temperatures) It is also best to choose one with anti-slip function, because it is easy to move during wireless charging, which will affect the charging speed.   4) Brand power: When choosing a wireless charger, don’t choose a three-no product, and don’t be greedy for cheap and choose a small brand. First-line brands have complete processing mechanisms before, during, and after sales. It is a guarantee for consumers   5) Appearance: This depends on the person, everyone has their own preferences.   6) Choose whether it is flat type or cushion type.

2024

01/11

1 2