Use of 2,3,3,3-tetrafluoropropene for cooling a battery having an oxide-type positive electrode

Patent metadata

Field	Value
Publication number	US-12525668-B2
Application number	US-202017624194-A
Country	US
Kind code	B2
Filing date	Jun 3, 2020
Priority date	Jul 5, 2019
Publication date	Jan 13, 2026
Grant date	Jan 13, 2026

Abstract

The use of a refrigerant including 2,3,3,3-tetrafluoropropene for the cooling of a battery of an electric vehicle including at least one electrochemical cell including a negative electrode, a positive electrode and an electrolyte, the positive electrode including at least one oxide of formula LiNixMnyCozO2 with x+y+z=1, x>y and x>z, or LiNix′Coy′Alz′ with x′+y′+z′=1, x′>y′ and x′>z′, as electrochemically active material.

First claim

The invention claimed is:

1 . A use of a refrigerant comprising 2,3,3,3-tetrafluoropropene for the cooling of a battery of an electric vehicle comprising at least one electrochemical cell comprising a negative electrode, a positive electrode and an electrolyte, the positive electrode comprising at least one oxide of formula LiNixMnyCozO2 with x+y+z=1, x>y and x>z, or LiNix′Coy′Alz′ with x′+y′+z′=1, x′>y′ and x′>z′, as electrochemically active material,
wherein the refrigerant comprises 60% by weight to 78.5% by weight of 2,3,3,3-tetrafluoropropene and 21.5% by weight to 40% by weight of difluoromethane, and
wherein the refrigerant circulates in a vapor compression circuit such that a heat-transfer process of the refrigerant is carried out cyclically and comprises:
evaporation of the refrigerant in an evaporator;
compression of the refrigerant in a compressor;
condensation of the refrigerant in a condenser; and
expansion of the refrigerant in an expansion module,
wherein the refrigerant is superheated between the evaporator and the compressor, and the superheating is from 1 to 25° C.

2 . The use as claimed in claim 1 , in which the battery is maintained at a temperature of between a minimum temperature t1 and a maximum temperature t2.

3 . The use as claimed in claim 2 , in which the minimum temperature t1 is greater than or equal to 10° C. and the maximum temperature t2 is less than or equal to 40° C.

4 . The use as claimed in claim 1 , in which the vapor compression circuit is also suitable for heating the passenger compartment of the vehicle and/or for air conditioning the passenger compartment of the vehicle and/or for heating the battery of the vehicle.

5 . The use as claimed in claim 1 , in which the refrigerant comprises approximately 78.5% by weight of 2,3,3,3-tetrafluoropropene and approximately 21.5% by weight of difluoromethane.

6 . A process for conditioning the battery of an electric vehicle, said battery comprising at least one electrochemical cell comprising a negative electrode, a positive electrode and an electrolyte, the positive electrode comprising at least one oxide of formula LiNixMnyCozO2 with x+y+z=1, x>y and x>z, or LiNix′Coy′Alz′ with x′+y′+z′=1, x′>y′ and x′>z′, as electrochemically active material, wherein the refrigerant comprises 60% by weight to 78.5% by weight of 2,3,3,3-tetrafluoropropene and 21.5% by weight to 40% by weight of difluoromethane, the process comprising:
circulating the refrigerant in a vapor compression circuit such that a heat-transfer process of the refrigerant is carried out cyclically and comprises:
evaporation of the refrigerant in an evaporator;
compression of the refrigerant in a compressor;
condensation of the refrigerant in a condenser; and
expansion of the refrigerant in an expansion module, and

cooling of the battery with a refrigerant comprising 2,3,3,3-tetrafluoropropene,
wherein the refrigerant is superheated between the evaporator and the compressor, and the superheating is from 1 to 25° C.

7 . The process as claimed in claim 6 , comprising:
maintaining the battery of the vehicle at a temperature of between a minimum temperature t1 and a maximum temperature t2.

8 . The process as claimed in claim 7 , in which the minimum temperature t1 is greater than or equal to 10° C. and the maximum temperature t2 is less than or equal to 40° C.

9 . The process as claimed in claim 6 , in which maintaining the battery of the vehicle at a temperature of between t1 and t2 is carried out alternately by cooling the battery with the refrigerant and by heating the battery.

10 . The process as claimed in claim 9 , in which the heating of the battery is carried out by the refrigerant; and/or in which the heating of the battery is carried out by an electrical resistance.

11 . The process as claimed in claim 6 , in which the refrigerant comprises approximately 78.5% by weight of 2,3,3,3-tetrafluoropropene and approximately 21.5% by weight of difluoromethane.

Assignees

• Arkema France

Inventors

• Schmidt Gregory

Classifications

• H01M2220/20

  Batteries in motive systems, e.g. vehicle, ship, plane · CPC title

• H01M2004/028

  Positive electrodes · CPC title

• H01M4/525

  of mixed oxides or hydroxides containing iron, cobalt or nickel for inserting or intercalating light metals, e.g. LiNiO2, LiCoO2 or LiCoOxFy · CPC title

• H01M4/505

  of mixed oxides or hydroxides containing manganese for inserting or intercalating light metals, e.g. LiMn2O4 or LiMn2OxFy · CPC title

• B60H1/00278

  for the battery · CPC title