US 12,594,569 B2Granted

Material removal device and method for battery electrode plate

AssigneeBYD Company Limited

InventorsHao Wei, Zhike Yang, Beijun Zhong

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Abstract

A device for removing a coating material from a battery electrode plate is provided. The battery electrode plate includes a current collector and a coating material attached to a surface of the current collector. The device includes a housing, a spraying port, and a suction port. The housing includes a side plate. A hollow space is defined by the side plate. The side plate is configured to be in contact with the current collector to isolate a portion of the coating material in the hollow space. The spraying port is located in the hollow space, and configured to be in communication with a liquid source to spray a liquid onto the portion of the coating material to dissolve the coating material. The suction port is located in the hollow space and configured to be in communication with a vacuum generation device to suck the dissolved coating material away from the current collector.

Claims18

Dependent claims

A device for removing a coating material from a battery electrode plate, the battery electrode plate comprising a current collector and the coating material attached to a surface of the current collector, the device comprising:

a housing, comprising a side plate, a hollow space being defined by the side plate, the side plate being configured to be in contact with the current collector and to isolate a portion of the coating material in the hollow space;
a spraying port, located in the hollow space and configured to be in communication with a liquid source to spray a liquid onto the portion of the coating material to dissolve the portion of the coating material;
and
a suction port, located in the hollow space and configured to be in communication with a vacuum generation device to suck the dissolved coating material away from the current collector, wherein
the side plate comprises an inner side plate and an outer side plate, the inner side plate and the outer side plate are spaced apart to form a suction pipe, the suction pipe is in communication with the suction port, and one end of the outer side plate close to the battery electrode plate is configured to be in contact with the current collector.

2 more elements

A method for removing a coating material from a battery electrode plate by a device, the battery electrode plate comprising a current collector and the coating material attached to a surface of the current collector, wherein

the device comprises:
a housing, comprising a side plate, a hollow space being defined by the side plate, the side plate being configured to be in contact with the current collector;
a spraying port, located in the hollow space and configured to be in communication with a liquid source;
and
a suction port, located in the hollow space and configured to be in communication with a vacuum generation device, wherein
the side plate comprises an inner side plate and an outer side plate, the inner side plate and the outer side plate are spaced apart to form a suction pipe, the suction pipe is in communication with the suction port, and one end of the outer side plate close to the battery electrode plate is configured to be in contact with the current collector;
and
the method comprises:
placing the housing on the battery electrode plate, isolating a portion of the coating material in the hollow space by the side plate;
spraying a liquid through the spraying port in the hollow space onto the portion of the coating material to dissolve the portion of the coating material;
and
sucking the dissolved coating material away from the current collector through the suction port.

9 more elements

Dependencies are inferred from the claim text.

Facts

Application: 18/541,338Filed 15 Dec 2023 · continuation
Priority: CN 202110744365.51 Jul 2021
Published: US 2024/0109093 A14 Apr 2024
Granted: 7 Apr 2026
Term ends: Not estimatedThe source records don’t support an estimate.

Classification15 codes

B05B 13/02
Machines or plants for applying liquids or other fluent materials to surfaces of objects or other work by spraying, not covered by groups…
B05B 14/30
Arrangements for collecting, re-using or eliminating excess spraying material: comprising enclosures close to, or in contact with, the object to…
B05C 5/02
Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work: the liquid or other…
H01M 4/04
Electrodes composed of, or comprising, active material: processes of manufacture in general

Family

PCT/CN2022/100196Parent of this continuation · filed 21 Jun 2022
US 2024/0109093 A1Pre-grant publication · published 4 Apr 2024
US 12,594,569 B2This patent

From the US filing history. Foreign family members aren’t listed.

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