雷军谈小米为何要自研电池包：5年前造车时就下决心要把电池做好

Core Insights - Xiaomi's founder and CEO Lei Jun emphasized the importance of self-research in battery technology for electric vehicles during a live stream from the Xiaomi car factory, marking his first live session after the Spring Festival [3] - The company has established a large and capable battery research and development team to ensure high-quality battery production, which is crucial for the success of their electric vehicles [3] - The new Xiaomi SU7 features significant safety upgrades, including the use of 2200 MPa ultra-strong steel, nine airbags, a bulletproof coating on the battery pack, and standard laser radar across all models [3] Group 1 - Lei Jun discussed the necessity for leading manufacturers to invest heavily in battery technology to excel in the electric vehicle market [3] - Xiaomi has committed to enhancing battery quality since the inception of its automotive division five years ago, leading to the establishment of a dedicated battery factory [3] - The Xiaomi SU7 includes advanced safety features such as triple redundancy in door handles, allowing for mechanical opening from both inside and outside the vehicle [3]