NIO Inc.
Cooling system for a battery pack system for quickly addressing thermal runaway

Abstract:

A battery pack system includes a battery pack module having a plurality of sealed battery cell containers, each having at least one battery cell configured to store electrical energy and a port. The battery pack system further includes a battery pack management system having a controller and a plurality of sensors operatively connected to the controller. The battery pack system further has a cooling system having a coolant source, a fluid channel connecting the coolant source to the port of at least one of the plurality of sealed battery cell containers, and at least one valve operatively connected to controller. The controller is configured to receive a signal from one of the plurality of sensors indicative of an abnormal condition at one of the sealed battery cell containers and control the at least one valve to introduce coolant fluid into the sealed battery cell container.