structural batteries that have competitive power densities will require precision 3D manufacturing at the same level as silicone processors, and is altogether theoretical for the forseable future.
what we are seeing with huawaei is an example of excess engineering capacity of a large high tech company, much like Honda, when it gets bored, and starts making jets, or robots, or rockets...instead of mini bikes
huawei is a bit different in that there big business of phones,routers, and cell infrastucture equipment got largely shut down, and so they are returning serve with a vengance in order to redeem there place as a player in high tech infrastructure industry.
Carbon fibre is incredibly expensive to manufacture. It requires a lot of manual part manipulation and yields can be poor.
BMW made a big bet that batteries would remain expensive and weight would matter for EVs. i3 and i8 were studies in scaling up structural carbon fibre mass production based on that bet that failed pretty badly.
Structural batteries are already a thing. Carbon fibre won't be the housing without a bunch of innovations.