Item 1: Apple believes that battery performance can be enhanced by using coatings that improve the average voltage and energy density. Apple and the US Department of Energy have developed a combination of surface coating and lithium ion cathode material, which can show improved average voltage and cycle retention compared with the traditional alumina coating.
Apple said that using this lithium-ion oxide (LLTO) containing lanthanum and titanium or lithium-ion oxide (LLGO) containing lanthanum and germanium as a lithium-based cathode material instead of cobalt oxide can provide a higher average voltage and a higher energy retention rate (battery health level) than the conventional alumina coating.
The patent can be applied to iPhone, iPad, iPod, AppleWatch, monitor, AppleTV, Mac and accessories.
Item 2: Small metal battery box. This patent describes a battery system for positioning around internal components. This new system will allow the use of larger batteries in the fuselage without damaging the components.
The third patent describes various solutions to detect and reduce battery swelling. Whether it is a car or a smart phone, it is necessary to determine whether the battery is bulging to ensure safety.
Extended data
Further reading-Apple will launch iPhone 12 MagSafe battery pack;
It is reported that Apple is developing a MagSafe-compatible battery pack for iPhone 12. This battery pack is different from the smart battery box of the previous iPhone, and it will be fixed on the iPhone 12 model by magnets.
The reporter found the logo of MagSafe battery pack in the code of iOS 14.5 beta, which mentioned the undeclared "battery pack". This name is famous because Apple doesn't call it battery pack at present, because the battery option designed by Apple before is called smart battery box.
After finding the code in the beta, Bloomberg confirmed Apple's work on the MagSafe battery pack, which has reportedly been developed for at least a year.