US 12,319,127 B2
Heat pump arrangement with indirect battery heating for battery-operated motor vehicles and method of operating a heat pump arrangement
Navid Durrani, Kerpen (DE); Tobias Haas, Cologne (DE); and Charles Wainwright, Chelmsford (GB)
Assigned to HANON SYSTEMS, Daejeon (KR)
Appl. No. 18/003,382
Filed by Hanon Systems, Daejeon (KR)
PCT Filed Jul. 1, 2021, PCT No. PCT/KR2021/008321
§ 371(c)(1), (2) Date Dec. 27, 2022,
PCT Pub. No. WO2022/005217, PCT Pub. Date Jan. 6, 2022.
Claims priority of application No. 10 2020 117 471.3 (DE), filed on Jul. 2, 2020.
Prior Publication US 2023/0322048 A1, Oct. 12, 2023
Int. Cl. B60H 1/32 (2006.01); B60H 1/00 (2006.01)
CPC B60H 1/3205 (2013.01) [B60H 1/00278 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A heat pump arrangement with indirect battery heating for battery-operated vehicles, comprising:
a refrigerant circuit with a compressor, a heating condenser, a first 3/2-way expansion valve, an external heat exchanger, at least one evaporator with a first expansion element as well as a second 3/2-way expansion valve arranged in parallel to the evaporator, and a battery chiller, wherein
a bypass with a second expansion element and a drive train chiller is arranged between the heating condenser and the first 3/2-way expansion valve, and
a coolant circuit with a coolant cooler and a battery heat exchanger with a first coolant pump and at least one drive train cooler with a second coolant pump arranged in parallel to the battery heat exchanger, wherein
a battery temperature control loop with the battery heat exchanger, the first coolant pump, a first 3/2-way valve and the battery chiller on the coolant side and
an electric drive cooling loop with the drive train cooler, the second coolant pump, a second 3/2-way valve and the drive train chiller on the coolant side are formed in such a way that the battery temperature control loop and the electric drive cooling loop can be operated independently of one another and independently of the coolant circuit as separate circuits, and
a heating circuit with the heating condenser, a third coolant pump, a heating device, a thermal heat exchanger as well as an indirect battery heating loop with an indirect heat exchanger, which battery heating loop can be connected via a third 3/2-way valve, and
a secondary bypass circuit as part of the coolant circuit with the battery heat exchanger, the first coolant pump, the first 3/2-way valve, and the indirect heat exchanger.