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充电必须要充电线必须吗? 无线充电的未来在那里?
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充电必须要充电线必须吗? 无线充电的未来在那里?

充电必须要充电线必须吗? 无线充电的未来在那里?

  • Categories:Industry news
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  • Time of issue:2015-01-04 00:00
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  大多数人去星巴克有三个目的:喝咖啡、蹭Wi-Fi,以及给手机充电。但是问题是,前面两个目的实现起来比较容易,而靠近充电插座的座位的数量却是有限的。万一碰到几个霸占座位充电的顾客,那你就干等着吧。
  随着个人拥有的智能终端数量不断增多,如何更方便地给这些终端充电,成为业界探索的一大方向。据美国市场研究调查公司IHS调查显示,智能手机中大约有 70%的用户至少每天为手机充一次电,30%的人每天要充2次以上。因此,无线充电技术的出现,为智能终端充电方式的革命带来了可能。近日,星巴克在美国 推出最新服务,将逐步在各门店设立免费手机无线充电点,并在洛杉矶首次试推。
  在技术演进和需求的推动下,无线充电技术正在快速成熟,并走进现实应用。那么,无线充电技术究竟会是昙花一现,还是未来的大势所趋?我们真的即将进入一个充电不设“线”的时代吗?
  无线充电技术 (Wireless chargi ng technol ogy),源于无线电力输送技术。又称感应充电、非接触式感应充电,是利用近场感应,也就是电感耦合,由供电设备(充电器)将能量传送给用电的装置,该装 置使用接收到的能量对电池充电,并同时供自身运作之用。由于充电器与用电装置之间以电感耦合传送能量,两者之间不用电线连接,因此充电器及用电的装置都可 以做到无导电接点外露。
  目前主流的无线充电技术主要有——
  电磁感应式充电 初级线圈一定频率的交流电,通过电磁感应在次级线圈中产生一定的电流,从而将能量从传输端转移到接收端。目前最为常见的充电解决方案就采用了电磁感应。事 实上,电磁感应解决方案在技术实现上并不神秘,比亚迪早在2005年申请的非接触感应式充电器专利,就使用了电磁感应技术。
  磁场共振充电 由能量发送装置和能量接收装置组成,当两个装置调整到相同频率,或者说在一个特定的频率上共振,它们就可以交换彼此的能量,是目前正在研究的一种技术。麻 省理工学院(MIT)一个研究团队不久前利用该技术,点亮了两米外的一盏60瓦灯泡,并将其取名为WiTrici ty。
  无线电波式充电 这是发展较为成熟的技术,类似于早期使用的矿石收音机,主要由微波发射装置和微波接收装置组成,可以捕捉到从墙壁弹回的无线电波能量,在随负载作出调整的 同时保持稳定的直流电压。这种方式只需一个安装在墙壁插头的发送器,以及可以安装在任何低电压产品上的“蚊型”接收器。

How is the intelligent wireless charger scheme developed 2022-04-11 09:37:47
The intelligent wireless charger scheme has the functions of automatic induction charging and intelligent power-off after full charging. It is not only suitable for electronic products with various charging voltages and capacities, but also can charge multiple different electronic products at the same time. The work adopts the design idea of intelligent wireless charging, which has the advantages of convenient use and wide application, and has high promotion and application value. Then, let's learn how to develop the scheme of intelligent wireless charger! Introduction to intelligent wireless charger scheme With the rapid development of electronic technology, the number of global mobile phone users has reached 3.3 billion. With MP3, MP4 and other peripheral electronic products, less than two people have mobile phone electronic products that need to be charged on average. At present, cable connection charging is widely used. The cable interface of this charging mode will usually have poor contact and other phenomena after long-term use. Moreover, a charger is not widely applicable, and different chargers need to be used according to the types of electronic products. It is very troublesome to find a suitable interface and wiring when charging. Charging all kinds of portable electronic products is an annoying trouble. In order to improve the above phenomenon, it is necessary to develop intelligent wireless charger. Working principle of intelligent charger The intelligent charger uses the principle of electromagnetic induction. In the non-contact charging system, it uses wireless transmission mode to charge, rather than wire (charging line) to transmit power. There is no physical interface for charging. Compared with general chargers, it avoids the trouble of inserting wires and pulling out batteries, and has the working principle of general chargers; The work adopts the design idea of one (charger) to many (inductive load) charging and intelligent charging; After the wireless charger charges the load, the indicator light will change from green light to seven color light, and the mobile phone can correctly display the charging state to intelligently complete the charging process. The experimental product is mobile phone. Advantages of Smart Wireless charger scheme: 1) Low cost The circuit is composed of a pulse generation unit, a power amplification unit, a filter unit, a comparison unit and a transmitting and receiving unit. Each unit is composed of several small components, which is simple to make. 2) One to many charging One charger can charge multiple loads. Each household can use one charger for the whole family. With the increase of load, the work efficiency will be improved, which can not only save electricity but also reduce unnecessary costs. 3) Convenient Compared with ordinary chargers, it not only reduces the trouble of plugging in and out, but also avoids the phenomena of inappropriate connector and poor contact. The elderly can also use it easily. 4) Intellectualization The intelligent wireless charger scheme can automatically conduct inductive charging as long as the inductive load is placed on the charger. Through information feedback, after the inductive load is fully charged, it can automatically turn off the power supply to realize the intelligence of the charging process. The smart wireless charger scheme will greatly improve our life. With the popularity of wireless charging technology, people can charge all devices with one charger. Moreover, with the popularization of this technology, wireless charging transmitters can be easily found in all places where we live, live and work. Charging transmitters can also be installed in cars, planes, hotels and offices. This means that people can charge their appliances anytime, anywhere without carrying wires. The above is how to develop the intelligent wireless charger scheme. If you need more information, please feel free to contact us!
Scheme of electromagnetic induction intelligent wireless charger 2022-03-25 08:57:03
With the rapid development of electronic technology, the number of people using smart phones in the world is increasing. By 2017, 69% of the world's people will use smart phones. At present, cable connected charging is widely used. The cable interface of this charging method will have poor contact for a long time. Moreover, a charger is not widely applicable. Different chargers need to be used according to the types of electronic products. It is very troublesome to find appropriate interfaces and wiring when charging. The charging of various portable electronic products is a headache. In order to improve the above phenomena, we need to develop a smart wireless charger scheme. Now let's learn about the electromagnetic induction Smart Wireless charger scheme!   The wireless charger scheme uses the principle of electromagnetic induction. After 1N4148 rectification and filtering, the voltage U1 is compared with the reference source uo. During charging, the current of the transmitting coil increases with the increase of inductive load. The load voltage of 0.33 Ω is amplified by 23 times through the operational amplifier, the green light is on, and there is no inductive load after 10 seconds, so it will shut down automatically; Press the reset button, U1 is much brighter than uo colorful light, indicating that it is charging; When no-load or full charge, U1 is less than uo, and the charger will restart. The specific circuit analysis is as follows 1) When switch S2 is disconnected, the charger is in intelligent charging as a whole. The colorful lamp flashes and UI reaches a high level. At this time, Q5 is saturated, and the voltage uceq is 0.67v, which is lower than the sum of the on voltage of Q2 and Q4 (1.34v). Q2 and Q4 constitute Darlington and cut off at the same time. After the charger is started, relay K1 is closed and K2 becomes closed at the same time. When there is inductive load, Q3 is cut off at this time, and capacitors C5 and R9 form an RC charging circuit. When the capacitor charging voltage reaches the on voltage of Q2 and Q4, Q2 is turned on to saturate Q4. When relay K1 is fully charged by the adsorbed inductive load or there is no inductive load, the green light is on, that is, UI is low level. Click the reset switch and the charger will restart. When the inductive load is fully charged (or no inductive load), the capacitor C5 is charged. At this time, after the relay is powered off, the relay K2 is closed. At this time, C5 and R13 form an RC discharge circuit to give C5 rapid discharge. Its voltage is ut. 2) During S2 shutdown, the whole charging circuit is in the process of manually cutting off the power supply. The wireless charger has the functions of automatic induction charging and intelligent power-off after full charging. It can also charge a variety of different electronic products at the same time. It is not only suitable for electronic products with various charging voltages and capacities. The wireless charger scheme summarizes the following advantages. 1) Low cost The circuit is composed of a pulse generation unit, a power amplification unit, a filter unit, a comparison unit and a transmitting and receiving unit. Each unit is composed of several small components, which is simple to make. 2) One to many charging One charger can charge multiple loads. Each household can use one charger for the whole family. With the increase of load, the work efficiency will be improved, which can not only save electricity but also reduce unnecessary costs. 3) Convenient Compared with ordinary chargers, it not only reduces the trouble of plugging in and out, but also avoids the phenomena of inappropriate connector and poor contact. The elderly can also use it easily. 4) Intellectualization As long as the inductive load is placed on the charger to realize the intellectualization of the charging process, it can automatically inductive charging. Through information feedback, after the inductive load is fully charged, it can automatically turn off the power supply. The above is the scheme of electromagnetic induction intelligent wireless charger. If you need more information, you can contact us at any time!  
Circuit analysis of wireless charger 2022-03-10 09:07:45
Wireless charging has entered reality from dream and turned from concept to commodity. In recent years, it has led a new trend in mobile phones, electric vehicles and other fields. It proves that wireless charging technology has a very broad market prospect. The following is a micro distance wireless charger circuit scheme. This scheme is a feasibility exploration experiment. Then, let's learn about the circuit analysis of the wireless charger scheme! Scheme and principle of wireless charger The wireless charger scheme converts DC into high-frequency AC, and realizes the wireless power supply through the mutual inductive coupling between the primary and secondary coils without wired connection. The basic scheme is shown in the figure. The wireless charger is composed of power transmitting circuit, power receiving circuit and charging control circuit. Power transmission department The power supply of the transmitting unit of the wireless charger scheme includes 220V AC and 24V DC, which are selected by the relay J. According to the principle of AC priority, the normally closed contact of relay J in the figure is connected with DC (battery BT1). Usually S3 is on. When AC power is supplied, the rectified and smoothed DC adsorption relay J of about 26V acts in the form of AC power supply, the DC power supply BT1 is disconnected from the power transmission circuit, and LED1 (green) emits light to indicate its state. The 24V DC power selected by the relay J is mainly supplied to the transmitting coil L1. In addition, it is supplied to the integrated circuit IC2 after being depressurized by IC1 (78l12). Therefore, in order not to make the action of J affect the stable action of the transmitting circuit, the capacitance of capacitor C3 must be more than 2200uf The wireless transmission of power is actually realized through the mutual inductance of transmitting coil L1 and receiving coil L2, in which L1 and L2 constitute the primary and secondary coils of coreless transformer. In order to ensure sufficient power and as high efficiency as possible, it is appropriate to select a high modulation frequency and consider the high-frequency characteristics of the equipment. Generally, the distance between the receiving coil L2 and the transmitting coil L1 is only a few centimeters, which is close to coaxial, so high transmission efficiency can be obtained. The principle of charging control circuit unit is shown in Figure 2-3. The effective value of 1.6mhz sine wave voltage induced by L2 is about 16V (no-load). After bridge rectification (composed of four 1N4148 high-frequency switching diodes) and C5 filtering, about 20V DC is obtained. As the power supply of the charging control unit. As the prototype of the feasibility exploration experiment, the wireless charger scheme is only for small capacity lithium-ion batteries and lithium polymer batteries of about 100mah. It is suitable for pocket digital products such as MP3, MP4 and Bluetooth headset. There are no obstacles in principle to popularize it into high-capacity batteries. Of course, from laboratory prototypes to market products, there may be long and arduous work such as electromagnetic radiation leakage, cost control and product technology, market entry and consumption start. The above is the circuit analysis of the wireless charger scheme. For more information, please feel free to contact us!
Which domestic manufacturer of wireless charging chips is better? 2022-02-23 09:01:39
In the face of many wireless charging chip manufacturers, it is not so simple to find a reliable one. In order to avoid cooperation with some informal enterprises. Next, Xiaobian will give you a detailed introduction, hoping to bring help to relevant people. If you are also interested in this topic, you might as well have a look together. Which domestic manufacturer of wireless charging chip products is better? I believe this issue is a topic that many people in the industry are more concerned and interested in. When buying such products, we must find formal enterprises. In this way, there will be security. If you want to ask which one is good, in fact, most companies do very well, and their qualifications are relatively complete, so we only need to meet the basic needs when looking for it. After many investigations and understanding, it is worth mentioning that this wireless charging chip manufacturer was established in August 2012, focusing on the R & D and sales of fully synchronous digital demodulation wireless charging IC. They are also bringing high-quality and convenient perception experience to mobile devices, consumer electronics and other wireless charging products, Since we want to cooperate, we also need to know that the company has sufficient technology R & D and quality control capabilities, and their core R & D team comes from R & D elites of Ti, NXP and St. They have been established for a long time and have a large scale, so they are very good in comparison. If you are still struggling with this matter, you might as well go here and have a look. This manufacturer of wireless charging chip products is very good in all aspects, and it is also very famous. I suggest you call to communicate, so that you can know how their service is. The manufacturer of wireless charging chip products provides global enterprises with high-quality wireless charging IC and technical solutions, which has won the trust and support of customers. The products using their wireless charging scheme are exported to the United States, Europe, Japan, South Korea and other countries and regions. Our company's products are very reasonable. I'm sure you will like them. If your industry needs it, you can order it here. Over the years, we have served our customers with high-quality services and reliable products, returned to the society and won countless honors and praise. Wireless charging chips have been widely used in mobile phones, medical treatment, smart home, digital products and many other fields. And the reputation among consumers is getting better and better. Therefore, if we cooperate with such companies, we will be more assured. The products of wireless charging chip manufacturers have also been sold to many places in the country. The content of the above article is a more formal wireless charging chip manufacturer to share with you. If you see it, you can also share it with friends in need. If you don't understand, you can pay more attention to the website. We will bring more content down. Remember to watch it.  

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