IP Library Patent Application 16236890
Patent Application
App. No. 16/236,890

ELECTRIC VEHICLE BATTERY CELL

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Quick Facts
Patent No.
US None
App. No.
16/236,890
Abstract

A battery cell of a battery pack to power an electric vehicle is provided. The battery cell can include a housing defining an inner region. A plurality of cathodes can be disposed within the inner region. Each of the plurality of cathodes can include an aluminum material comprises a first face and a second face and a coating disposed on the first face and the second face. The coating can include lithium nickel cobalt aluminum oxide particles and a linear carbon conductive additive to form a connection between a plurality of the lithium nickel cobalt aluminum oxide particles.

Claims (58)

1 . A battery cell for a battery pack to power an electric vehicle, the battery cell comprising:

a housing defining an inner region;

a plurality of cathodes that extend into the inner region, each of the plurality of cathodes comprising:

an aluminum material comprising a first face and a second face;

a coating disposed on the first face and the second face, the coating comprising lithium nickel cobalt aluminum oxide particles and a linear carbon conductive additive to form a connection between a plurality of the lithium nickel cobalt aluminum oxide particles;

the coating disposed on the first face having a thickness between 150 μm and 250 μm;

the coating disposed on the second face having a thickness between 150 μm and 250 μm; and

the coating including a plurality of point to line connections, each point to line connection formed between at least one linear carbon additive and multiple lithium nickel cobalt aluminum oxide particles.

2 . The system of claim 1 , comprising:

the coating including a binder, a conductive agent and a coating agent combined with the lithium nickel cobalt aluminum oxide particles and the linear carbon conductive additive.

3 . The system of claim 1 , comprising:

the linear carbon conductive additive having at least one of carbon nanotubes and vapor grown carbon nanofibers.

4 . The system of claim 1 , comprising:

the coating includes between 0.05 wt % and 1.0 wt % carbon nanotubes.

5 . The system of claim 1 , comprising:

the coating having 0.10 wt % carbon nanotubes.

6 . The system of claim 1 , comprising:

the coating having between 0.30 wt % and 0.70 wt % vapor grown carbon nanofibers.

7 . The system of claim 1 , comprising:

the coating includes 0.5 wt % vapor grown carbon nanofibers.

8 . The system of claim 1 , comprising:

the coating having between 95 wt % and 98 wt % lithium nickel cobalt aluminum oxide particles.

9 . The system of claim 1 , comprising:

the coating includes 97.4 wt % lithium nickel cobalt aluminum oxide particles.

10 . The system of claim 1 , comprising:

the battery cell disposed in a battery pack having multiple battery cells.

11 . The system of claim 1 , comprising:

the battery cell disposed in a battery pack and the battery pack disposed in the electric vehicle.

12 . The system of claim 1 , comprising:

the battery cell disposed in the electric vehicle.

13 . A method of providing a battery cell for a battery pack to power an electric vehicle, the method comprising:

providing a battery pack having a battery cell, the battery cell having a housing that includes a first end and a second end and defines an inner region;

forming a coating for a plurality of cathodes, the coating having lithium nickel cobalt aluminum oxide particles and a linear carbon conductive additive that form a connection between a plurality of the lithium nickel cobalt aluminum oxide particles;

forming a plurality of point to line connections in the coating, each point to line connection formed between at least one linear carbon additive and multiple lithium nickel cobalt aluminum oxide particles;

applying the coating to a first face of an aluminum material in a range between 150 μm and 250 μm for each of the plurality of cathodes;

applying the coating to a second face of the aluminum material in a range between 150 μm and 250 μm for each of the plurality of cathodes; and

disposing the plurality of cathodes into the inner region of the housing.

14 . The method of claim 13 , comprising:

combining a binder, a conductive agent and a coating agent with the lithium nickel cobalt aluminum oxide particles and the linear carbon conductive additive to form the coating.

15 . The method of claim 13 , comprising:

the linear carbon conductive additive comprises at least one of carbon nanotubes and vapor grown carbon nanofibers.

16 . The method of claim 13 , comprising:

forming the coating having between 0.05 wt % and 1.0 wt % carbon nanotubes.

17 . The method of claim 13 , comprising:

the battery pack disposed in the electric vehicle.

18 . The method of claim 13 , comprising:

forming the coating having between 0.30 wt % and 0.70 wt % vapor grown carbon nanofibers.

19 . The method of claim 13 , comprising:

forming the coating having between 95 wt % and 98 wt % lithium nickel cobalt aluminum oxide particles.

20 . An electric vehicle, comprising:

a battery pack having a battery cell, the battery cell comprises:

a housing defining an inner region;

a plurality of cathodes that extend into the inner region, each of the plurality of cathodes comprise:

an aluminum material comprises a first face and a second face;

a coating disposed on the first face and the second face, the coating comprises lithium nickel cobalt aluminum oxide particles and a linear carbon conductive additive to form a connection between a plurality of the lithium nickel cobalt aluminum oxide particles;

the coating disposed on the first face having a thickness between 150 μm and 250 μm;

the coating disposed on the second face having a thickness between 150 μm and 250 μm; and

the coating including a plurality of point to line connections, each point to line connection formed between at least one linear carbon additive and multiple lithium nickel cobalt aluminum oxide particles.

Assignments (3)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded May 6, 2019
From: LIU, YING; TANG, YIFAN
To: SF MOTORS, INC.
Reel/Frame 049087/0559 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Mar 9, 2019
From: SF MOTORS, INC.
To: CHONGQING JINKANG NEW ENERGY VEHICLE CO., LTD.; SF MOTORS, INC.
Reel/Frame 048553/0755 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Dec 31, 2018
From: LIU, TIANYUAN
To: SF MOTORS, INC.
Reel/Frame 047876/0439 →