I recently collected some information and talked about the battery systems of the two new car companies that are at the forefront of the turbulence. This time, the relevant information has been found. It is for discussion only and is not intended to be relegated. The relevant personnel of the two companies are excited.
1) WM PK NIO Vehicles Overview
This is a competition between a typical seven-seater SUV and a five-seater SUV. The 300km defined by the project of the vehicle-level project is now somewhat low.
Remarks: WM press release is 450 kilometers of life, but the actual value is made to be 330, I am here to make a statement, if interested can find the Ministry of Industry's announcement system to check.
1.1) 100 km power consumption
Both vehicles are designed to receive a 1x subsidy, but Li’s 25% line is closer.
For the above reference, it is not convenient to say more. WM's route is the classic management route and it is all handed to suppliers. The NIO's route is to develop its own powertrain, which is the same style in the following battery systems. .
2) Battery System
The two batteries use a similar chemical system with some differences in configuration.
One is to use 50Ah, group 2P6S, two modules in parallel, and then 16 strings
One is 150Ah, group 1P96S, simpler
Due to the actual test of 1C, the releasable capacity of the former is smaller. This involves a belief issue and how to resolve the actual expansion in the battery core.
Group efficiency
Both packages should be water-cooled, with a group efficiency of about 70% or less
Here the design of the lower shell, we can understand the design of the first generation of the profile, the strength is relatively large, and later obviously have some advantages in the design of the lower shell and water-cooled plate.
Remarks: At present WM did not say that it may be based on this weight, with the design of the harmonica tube
WM did not say that this battery system has a high probability of being designed for CATL (author speculation, not necessarily correct).
If at the end of 2018, further increasing the energy density requirement, the bottleneck of the standard module is very obvious.
The battery management system, WM is fully developed by CATL. NIO is more eager to find UMC to do hardware design, to do application layer software.
Summary: The following information is currently available for your readers' reference. If any information is incorrect, please leave a message. The biggest winner in the power system is undoubtedly CATL^_^
Shenzhen GEME electronics Co,.Ltd , https://www.gemesz.com