"In the 5G era, the breakthrough of battery itself will not be seen in a short time, and early charging anxiety of smart phones will reappear." On the afternoon of September 17, Zhang Jialiang, head of oppo's flash charging team, said during an exchange with media in Shenzhen.
Oppo once led the trend of fast charging in the mobile phone industry by "charging for 5 minutes and calling for 2 hours". In 2016, with excellent comprehensive strength of R9 series mobile phones and special fast charging performance, it became the sales champion of mobile phones in China
However, with the advent of 5G era, on the one hand, the current 4000 Ma battery has become the mainstream mobile phone standard, it puts forward new requirements on the safety, speed and convenience of fast charging, and the fast charging needs to be upgraded. On the other hand, the fast charging of friends business has been following up rapidly, and charge pump technology and wireless fast charging have appeared accordingly. Even on September 10 this year, apple, which has always been conservative about fast charging, also equipped its new products with 18W Fast Charging as standard.
Oppo flash charging is facing more and more challenges. On behalf of oppo, Zhang Jialiang launched three arrows in Shenzhen on the same day. Firstly, he released supervooc2.0 with the maximum charging power of 65W; secondly, he pushed out the wireless vooc flash charging with the maximum charging power of 30W; thirdly, he upgraded the vooc to version 4.0. Speaking about the adapter made of the latest gallium nitride material, Zhang Jialiang said, "it may knock some people to the ground when it comes out."
He wants to emphasize to the outside world that oppo is still in the leading position in terms of fast charging. Up to now, the total number of mobile phones equipped with VOOC flash charging is 145 million and oppo has more than 1700core patents for flash charging in the world. Recently, flash charging licenses have been opened to nearly 20 enterprises, including Changchong, Anke Innovation and Ruixinrui electronics, etc."Higher power, faster charging solutions are in the laboratory."
Oppo said that the quick charging (oppo called flash charging) schemes launched this time can be used for commercial use in scale. Among them, supervooc2.0 will take the lead in launching in renoace, which will be released in October. The mobile phone will be full of 4000mAh battery energy in 30 minutes, which may become the fastest and most advanced commercial charging technology. In addition, 30W Wireless Flash charging will be commercially available in K5 products in October.
"5 minutes of charging and 2 hours of blackout"
How can 65W supervooc2.0 achieve the fastest charging? Firstly, the innovative dual
cell direct charging architecture improves the charging efficiency to a new height, and downward compatible with super vooc and vooc flash charging. Oppo improves the charging power rate by customizing and optimizing the hardware, software and algorithm. Supervooc2.0 can charge the equivalent 4000mAh battery energy from 1 to 100% in 27 minutes, and fully charge in 30 minutes. It can be charged to 27% in 5 minutes, which is upgraded from the past "5 minutes of charging and 2 hours of calling" to "5 minutes of charging and 2 hours of blackout".
Based on the previous super flash charging technology platform, supervooc2.0 forms the super vooc charging protocol closed-loop at the mobile phone, adapter end and data line end through customized IC, and adopts the series double 3C cell and dual BTB interface structure with lower impedance, and the cell core adopts MMT The manufacturing process can fully inhibit the heating and improve the charging efficiency. Even in the scenario of charging while playing games, it can also bring a very fast flash charging experience.
Supervooc2.0 adapter is equipped with a new semiconductor material Gan (gallium nitride), which improves the charging efficiency, reduces the heating, effectively shortens the charging time and further reduces the size of the adapter.
Extreme speed is the goal and safety is the premise. Supervooc2.0 not only has the highest charging power rate of 65W, but also has more efficient charging performance. At the same time, it pays great attention to safety. "Walking by the river often requires
wet shoes sooner or later", which Zhang Jialiang often quoted to remind himself and his team. Oppo set up five security protection in adapter, cable material and mobile phone end to provide full link charging security guarantee.
Wireless Flash charging, wired experience
Oppo also launched 30W wireless vooc flash charging this time to adapt to more diversification and fragmentation of user charging scenarios. "We are the second mobile phone company in the world to do Wireless Flash charging." Zhang Jialiang said.
Zhang Jialiang called it one of the most powerful wireless charging technologies on the market. It can charge the equivalent4000mAh battery energy to 100% in 80 minutes, and it is compatible with QI standard. It supports 5W and 10W charging electric power, which can bring users wired vooc wirelessly Flash charging experience.
30W wireless vooc flash charging adopts real-time communication adjustment, matches with wireless charging board for constant voltage and constant flow direct charging, and integrates the vooc isolated charge pump technology initiated by oppo, so that the power can be charged into the battery more efficiently and safely. At the same time, 30Wwireless vooc flash charging realizes the dual loop control of wireless charging control loop and charging chip control loop through customized software and hardware mode, so that the adapter, charging board and mobile phone end form a wireless vooc charging protocol closed loop. At the same time, it can effectively reduce the loss and heat, so that the mobile phone can be picked up without being hot.
In terms of security, 30W wireless vooc flash charging innovatively adds soft switching scheme and direct flow isolation scheme, Compared with the traditional hard switching technology, the resonant soft switching technology can significantly improve the conversion efficiency of charge pump, improve the charging efficiency and reduce the heating. The DC isolation scheme can effectively block the potential high voltage
DC path, so as to avoid the potential safety hazard caused by high voltage current applied to the battery. 30W wireless vooc flash charging also adds the function of foreign matter detection, when the charging board detects metal foreign matters, it can immediately stop charging.
Since then, oppo has also upgraded 30wvooc4.0. Compared with vooc3.0, vooc4.0 has higher charging power. It can charge 4000mAh battery to 67% in 30 minutes and charge to 100% in 73 minutes, which is 12% shorter than the previous generation technology in charging time. At the same time, the further optimized VFCalgorithm also reduces the charging time for the last 10% of the power. In addition, vooc4.0 can reduce the internal resistance of the whole charging system hardware by customizing the30W high-power adapter and using 3C cell to suppress heating. Even when playing and charging, vooc4.0 can also control the temperature of the phone.
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