HEAT DISTRIBUTION IN A MOTOR VEHICLE

• US 20140020415A1
• Filed: 07/18/2013
• Published: 01/23/2014
• Est. Priority Date: 07/18/2012
• Status: Abandoned Application

• Current Assignee: Hanon Systems (Hahn & Co. Auto Holdings Co. Ltd.)
• Original Assignee: Hanon Systems (Hahn & Co. Auto Holdings Co. Ltd.)
• Inventors: Heyl, Peter
• Application Number:
  US13/945,594
• Publication Number:
  US 20140020415A1
• Time in Patent Office: Days
• US Class Current: 62/119
• CPC Class Codes: B60H 1/00385 for vehicles having an electrical drive, e.g. hybrid or fuel cell
• CPC Class Codes: B60H 1/00907 where the flow direction of the refrigerant changes and an evaporator becomes condenser
• CPC Class Codes: B60H 2001/00307 Component temperature regulation using a liquid flow
• CPC Class Codes: B60H 2001/00928 comprising a secondary circuit
• CPC Class Codes: B60H 2001/00935 comprising four way valves for controlling the fluid direction
• CPC Class Codes: B60H 2001/00949 comprising additional heating/cooling sources, e.g. second evaporator
• CPC Class Codes: B60K 11/02 with liquid cooling
• CPC Class Codes: B60K 6/22 characterised by apparatus, components or means specially adapted for HEVs
• CPC Class Codes: B60L 1/003 to auxiliary motors, e.g. for pumps, compressors
• CPC Class Codes: B60L 2240/34 Cabin temperature
• CPC Class Codes: B60L 2240/36 Temperature of vehicle components or parts
• CPC Class Codes: B60L 2240/425 Temperature
• CPC Class Codes: B60L 2270/46 Heat pumps, e.g. for cabin heating
• CPC Class Codes: B60L 3/0023 Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train
• CPC Class Codes: B60L 3/0061 relating to electrical machines
• CPC Class Codes: B60L 50/16 with provision for separate direct mechanical propulsion
• CPC Class Codes: B60Y 2200/91 Electric vehicles
• CPC Class Codes: B60Y 2200/92 Hybrid vehicles
• CPC Class Codes: B60Y 2306/05 Cooling
• CPC Class Codes: F25B 13/00 Compression machines, plants or systems, with reversible cycle defrosting cycles F25B47/02
• CPC Class Codes: F25B 2400/0409 : for the evaporator
• CPC Class Codes: F25B 2400/0417 : for the subcooler
• CPC Class Codes: F25B 2400/0419 : for the superheater
• CPC Class Codes: F25B 2600/2501 : Bypass valves
• CPC Class Codes: F25B 40/00 : Subcoolers, desuperheaters or superheaters
• CPC Class Codes: F25B 41/39 : Dispositions with two or more expansion means arranged in series, i.e. multi-stage expansion, on a refrigerant line leading to the same evaporator
• CPC Class Codes: F25B 49/02 : for compression type machines, plants or systems
• CPC Class Codes: F25B 6/04 : arranged in series
• CPC Class Codes: F25B 9/008 : the refrigerant being carbon dioxide
• CPC Class Codes: Y02T 10/64 : Electric machine technologies in electromobility
• CPC Class Codes: Y02T 10/70 : Energy storage systems for electromobility, e.g. batteries
• CPC Class Codes: Y02T 10/7072 : Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
• CPC Class Codes: Y10S 903/904 : Component specially adapted for hev

Abstract

A device and method for heat distribution in a hybrid motor vehicle are provided. The device includes an engine cooling circuit; and a refrigerant circuit for a combined operation in a refrigeration heat pump mode and a reheating mode, includes an evaporator, a compressor, a heat exchanger to supply heat from the refrigerant to air being conditioned for a passenger compartment; and a heat exchanger to transfer heat between a refrigerant of the refrigerant circuit and coolant of the engine cooling circuit, wherein the heat exchanger operates as an evaporator for the heat transfer, and as a condenser for the heat transfer from the condensing refrigerant to the coolant.

Claims

1. A device for heat distribution in a hybrid motor vehicle, comprising:

an engine cooling circuit; and

a refrigerant circuit for a combined operation in a refrigeration heat pump mode and a reheating mode, comprising;

an evaporator,

a compressor,

a heat exchanger to supply heat from the refrigerant to air being conditioned for a passenger compartment; and

a heat exchanger to transfer heat between a refrigerant of the refrigerant circuit and coolant of the engine cooling circuit,

wherein the heat exchanger operates as an evaporator for the heat transfer, and as a condenser for the heat transfer from the condensing refrigerant to the coolant.

2. The device according to claim 1, wherein a first motor and a second motor are arranged inside the engine cooling circuit, and

the first motor is an internal combustion engine and the second motor is an electric motor.

4. The device according to claim 2, wherein the first motor and the second motor are integrated in the engine cooling circuit and the engine cooling circuit is configured such that a mass flow of coolant conducts through the first motor for heat transfer and through the second motor for heat transfer.

5. The device according to claim 4, further comprising:

a heat exchanger to surrender heat from the coolant to the air going to the passenger compartment, and

a heat exchanger to transfer heat between the coolant and the ambient air.

3. The device for heat distribution in a hybrid motor vehicle, comprising:

an engine cooling circuit;

a refrigerant circuit comprising an evaporator;

a compressor;

a heat exchanger to supply heat from refrigerant to the air being conditioned for a passenger compartment;

a heat exchanger to transfer heat between the refrigerant of the refrigerant circuit and the coolant of the engine cooling circuit,

wherein the engine cooling circuit includes a first motor and a second motor, the first motor being an internal combustion engine, and

the second motor being an electric motor.

6. The device according to claim 3, wherein the engine cooling circuit is subdivided into a high-temperature cooling circuit for conditioning of the first motor and a low-temperature cooling circuit for conditioning of the second motor, the heat exchanger being able to operate in either the high-temperature coolant circuit or the low-temperature coolant circuit.

7. The device according to claim 6, wherein in the case the high-temperature cooling circuit comprises the heat exchanger, the heat exchanger transfers heat between the coolant and the ambient air.

8. The device according to claim 6, wherein in the case the low-temperature cooling circuit comprises the heat exchanger, the heat exchanger transfers heat between the coolant and the ambient air.

9. A method for heat distribution in a hybrid motor vehicle, comprising:

condensing for heat transfer from a condensing refrigerant of a refrigerant circuit to coolant in the engine cooling circuit when operating in a refrigeration system mode or in a reheating mode; and

evaporating for the heat transfer from the coolant to the refrigerant being evaporated in the refrigerant circuit in a heat pump mode.

10. The method according to claim 9, wherein based on the operating mode of the refrigerant circuit, a first motor and a second motor are exposed to coolant flow of the engine cooling circuit, and

the ambient air being provided as a heat source and/or heat sink.

11. The method according to claim 10, wherein in response to the refrigerant circuit operating in the refrigeration system mode, and the second motor operating at a same time,

the coolant of the engine cooling circuit is heated upon flowing through the heat exchanger to operate as a condenser and through the second motor;

transferring heat to the first motor to warm up the first motor prior to operation of the hybrid motor vehicle,

utilizing the heat transfer as an additional heat sink to the engine cooling circuit (3).