Method of using an electric field for roll-to-roll separator coating
AssigneeGM Global Technology Operations LLC
InventorsRuchira Dharmasena, Shuru Chen, Fang Dai, Mei Cai, Sanaz Ketabi
Life of this patent
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Abstract
A system for coating a separator for a battery includes a separator feed and collection assembly configured to dispense the separator, a coating distribution device configured to flow a coating material toward the separator, and an electric field generator configured to generate an electric field in a gap between the coating distribution device and the separator.
Claims20
A system for coating a separator for a battery, the system comprising:
- a separator feed and collection assembly configured to dispense the separator;
- a coating distribution device configured to flow a coating material toward the separator;
- and
- an electric field generator configured to generate an electric field in a gap between the coating distribution device and the separator,
- wherein the coating material includes a metal oxide and carbon.
A method for coating a separator for a battery, the method comprising:
- using a separator feed and collection assembly, dispensing the separator at a controlled movement rate;
- flowing a coating material from a coating distribution device toward the separator;
- and
- generating an electric field in a gap between the coating distribution device and the separator,
- wherein the coating material includes a metal oxide and carbon.
A system for coating a separator for a battery, the system comprising:
- a separator feed and collection assembly configured to dispense the separator;
- a coating distribution device configured to flow a coating material toward the separator;
- an electric field generator configured to generate an electric field in a gap between the coating distribution device and the separator;
- and
- a coating control module to control a rate of movement of the separator through the separator feed and collection assembly, a flow rate of the coating material from the coating distribution device, and the generation of the electric field such that the coating material is applied to the separator at a thickness between 2 and 20 μm.
Dependencies are inferred from the claim text.