S-type adopts three-phase AC induction motor, which integrates motor controller, motor and transmission box. In particular, the motor controller is also encapsulated in a cylinder, which corresponds to the motor and looks like a double motor. From the design point of view, it is highly integrated and symmetrical and beautiful. The transmission box in the middle adopts the scheme of fixed speed ratio (9.73: 1). The peak power of 85KWh motor is 270KW and the torque is 440Nm.
The charging system supports three charging methods:
1. Super charging pile DC fast charging Super charging pile can directly output 120KW to charge ESS, which can be fully charged within one hour.
2. There are two car chargers under the back seat of high-power wall-mounted charging, one master and one slave. The main charger is turned on by default, and the power is 10KW, which can be fully charged in almost 8 hours. Although the hardware of the slave charger has been installed in the car, it needs to pay an extra 654.38+0.8 million to activate, which can double the charging capacity. This kind of hardware has been configured for a long time, and then the way of charging through license is exactly the same as IBM's server. At present, Tesla has applied this strategy to power batteries. Version 60 actually installed more than 70 kWh, and the reserved capacity just avoided complete discharge, which helped to extend the battery life. Therefore, it is also a cost-effective choice to start with the low version.
The charging power of 3.220V household socket is about 3kw, and it takes about 30 hours to fully charge. Put the charger in the car, even in places where there is no charging infrastructure at all, you can charge it with ordinary household plugs. The interesting thing about thermal management is that Model S uses a four-way switching valve to switch the cooling system in series and parallel. The purpose of my analysis is to choose the best thermal management mode according to the working conditions. When the battery needs to be heated at low temperature, the motor cooling circuit is connected in series with the battery cooling circuit to make the motor heat the battery. When the power battery is at high temperature, the motor cooling circuit and the battery cooling circuit are connected in parallel, and the two cooling systems dissipate heat independently.