Tesla Motors Patent Grants

Liquid cooled rotor assembly

Granted: August 25, 2009
Patent Number: 7579725
A rotor assembly cooling system (100) and method of using same are provided. A portion of the rotor shaft (103) is hollow, the rotor shaft including an open end (107) and a closed end (105). A coolant feed tube (109) is rigidly attached to the rotor shaft (103) using one or more support members (111), thus causing the shaft and the feed tube to rotate at the same rate. Coolant is pumped through the feed tube until it exits the end of the feed tube and flows against the inside surface of…

Liquid cooled rotor assembly

Granted: February 10, 2009
Patent Number: 7489057
A rotor assembly cooling system (100) and method of using same are provided. A portion of the rotor shaft (103) is hollow, the rotor shaft including an open end (107) and a closed end (105). A coolant feed tube (109) is rigidly attached to the rotor shaft (103) using one or more support members (111), thus causing the shaft and the feed tube to rotate at the same rate. Coolant is pumped through the feed tube until it exits the end of the feed tube and flows against the inside surface of…

Mitigation of propagation of thermal runaway in a multi-cell battery pack

Granted: October 7, 2008
Patent Number: 7433794
A method of mitigating propagation of a thermal event in an energy storage system having a plurality of cells is disclosed. The method includes the steps of identifying the heat sources within the energy storage system and plurality of cells. The method then controls a temperature of the energy storage system and plurality of cells and also detects predetermined conditions within the energy storage system. The method then performs a predetermined action based on when one of the…

Electro mechanical connector for use in electrical applications

Granted: July 29, 2008
Patent Number: 7404720
An electro mechanical connector for use in an electrical vehicle having a battery pack is disclosed. The connector includes a locking collar having a slot therein and a plug body arranged within the locking collar. The connector also has a switch mount sleeve arranged on the plug body and a micro switch connected to the switch mount sleeve at a predetermined position. The electrical connector also includes a switch actuator that is slidingly arranged within the slot and is aligned with…