Safety and wisdom are the latest development directions of Oppo’s fast charging technology

As the charging power of mobile phones exceeds 100 watts, speed is no longer the only goal pursued by manufacturers. At today’s Flash Charging Open Day event, Oppo introduced the latest development directions of the two VOOC fast charging technologies, safety and intelligence. First of all, in the part of safety, the core is the newly proposed “sandwich safety battery” design, which claims to “solve the hidden dangers of battery safety from the source.” In this plan, Oppo uses a new composite polymer material as the matrix, and applies a special process to plate two aluminum layers, thus forming a sandwich structure current collector. Compared with the traditional aluminum foil current collector, it has higher reliability and can better avoid the positive and negative terminals. Together with the two safety coatings applied on top and bottom, the final five-layer safety structure is formed.

According to Oppo’s test results, the “sandwich safety battery” can provide 100% safety performance without deflagration in acupuncture and heavy hit tests. At the same time, the factory also announced a new internal string dual-cell solution at the event. It can maintain all the safety performance while relying on special polymer materials to allow the two batteries in a battery package to “work separately and independently without interfering with each other.” On this basis, a battery of the same size can increase “at least 5% capacity”. In the face of the high power consumption demand in the 5G era, the value of this design should be self-evident. In addition, Oppo also mentioned on the scene that the new safe charging system will contain low-impedance fuses, and GaN (gallium nitride) electronic switches have also been built into mobile phones for the first time.

As for smart charging, Oppo claims that it can extend battery life by dynamically adjusting the negative potential. The existing solution will reduce the remaining battery power to 80% after 800 charging cycles. The new solution increases the number of charging cycles that can be completed to 1,500 before the margin is reduced to 80%. In addition, the new charging algorithm can dynamically match the most reasonable charging power for mobile phones according to different situations. Oppo said that this can reduce the time required to fully charge a 4,500mAh battery with 65W power from 36 minutes to 30 minutes. Finally, they also mentioned that in the extreme low temperature scenario, the new solution can improve the charging performance by intelligently heating the battery.

However, Oppo has not yet given a specific schedule for when these new technologies will be applied to actual products. But based on past experience, they probably won’t let everyone wait too long.