Charing the li on batteries quickly could save users a lot of times, but what will be the problem of this technology to produce such batteries in mass production ? Let’s see what DTP Battery enginery fellows said.
In fact, there are several core elements of the battery, security, cost, energy density, power density, etc., where the energy and power density is a conflicting thing, that you can’t have your cake and eat it.
High energy density of the battery, the active material coated with thick, conductive agent with less, the corresponding high power when the ability to work worse; and high power density of the battery is just the opposite. Because the energy density in the existing electrochemical system, there are theoretical upper limit, we can do is to continue to limit the limit, and can not be exceeded, it is scientific and natural laws. For example, now the NCA18650 battery is about 220WH / kg is basically close to the limit of the data. Want to raise again? Some difficult, may change material system, such as negative with silicon is a better choice. However, the power density is not the same, if you sacrifice some of the energy density, power density can be improved naturally, and if the unlimited nano-materials, conductive agent to do more material to do enough, power density naturally Easy to a new high, which is what we see a lot of breakthroughs in the performance of nano-materials, but this is a lot of sacrifice from other properties to come.
Often reported that electric cars or bikes are firing when they are charging is a proof that super charging is not safe for li ion battery pack comparing with slow charging, that is true.