Climate control system for vehicles using thermoelectric devices

• US 9,365,090 B2
• Filed: 08/13/2013
• Issued: 06/14/2016
• Est. Priority Date: 05/10/2004
• Status: Active Grant

• Current Assignee: Gentherm Incorporated
• Original Assignee: Gentherm Incorporated
• Inventors: Gawthrop, Peter R.
• Primary Examiner(s): Norman, Marc
• Assistant Examiner(s): Schermerhorn, Jon T
• Application Number:
  US13/966,106
• Publication Number:
  US 20130327063A1
• Time in Patent Office: 1,036 Days
• US Class Current: 1/1
• CPC Class Codes: B60H 1/00007 Combined heating, ventilating, or cooling devices control systems or mechanisms B60H1/00642
• CPC Class Codes: B60H 1/004 for vehicles having a combustion engine and electric drive means, e.g. hybrid electric vehicles
• CPC Class Codes: B60H 1/00478 Air-conditioning devices using the Peltier effect for air-conditioning in general F24F5/0042; for refrigeration F25B21/02; electric devices exhibiting the Peltier effect H10N10/00
• CPC Class Codes: B60H 1/00885 Controlling the flow of heating or cooling liquid, e.g. valves or pumps B60H1/00899 takes precedence; constructions of valves B60H1/00485
• CPC Class Codes: B60H 1/12 using an air blower
• CPC Class Codes: B60H 2001/2234 when vehicle is parked, preheating
• CPC Class Codes: B60H 2001/2237 supplementary heating, e.g. during stop and go of a vehicle
• CPC Class Codes: B60H 2001/224 automatic operation, e.g. control circuits or methods
• CPC Class Codes: F25B 21/04 reversible

Abstract

The present disclosure provides a system for controlling the climate of a vehicle. The system includes a thermoelectric module and a heat exchanger. The thermoelectric module includes thermoelectric elements powered by electric energy. The thermoelectric elements emit or absorb heat energy based on the polarity of the electrical energy provided. The thermoelectric module and the heat exchanger heat or cool the air flow provided to the cabin of the vehicle.

Claims

1. A climate control system for heating or cooling a passenger cabin of a vehicle during heatup of an internal combustion engine of the vehicle, the system comprising:

a coolant conduit configured to convey a coolant therein and selectively in thermal communication with an engine coolant system, wherein the engine coolant system is in thermal communication with an internal combustion engine of a vehicle;

a heater core disposed in an air flow provided to a passenger cabin of the vehicle and in thermal communication with the engine coolant system;

a thermoelectric module including a thermoelectric element and in thermal communication with the coolant conduit, the thermoelectric element configured to transfer thermal energy between the coolant conduit and a heat transfer medium;

a heat exchanger disposed in the air flow and in thermal communication with the thermoelectric module; and

a controller configured to operate the climate control system in a plurality of modes of operation, and wherein the plurality of modes of operation comprises;

a heatup heating mode wherein the thermoelectric module is configured to heat the air flow by the thermoelectric elements transferring thermal energy from the heat transfer medium to the coolant while receiving electric current supplied in a first polarity and while the internal combustion engine is running; and

a heating mode wherein the internal combustion engine is configured to heat the air flow while operation of the thermoelectric module is ceased and while the internal combustion engine is running,

wherein, in the heatup heating mode, the thermoelectric module provides heat to the air flow while temperature of the coolant from thermal energy of the internal combustion engine alone has not reached a desired temperature to heat the passenger cabin.

2. The system of claim 1, wherein the climate control system, in the heatup heating mode, is configured to heat the passenger cabin of the vehicle with a faster time to comfort than heating the passenger cabin in the heating mode when the internal combustion engine is heating up.

3. The system of claim 1, wherein the heatup heating mode includes the internal combustion engine configured to heat the air flow while the thermoelectric element receives electric current supplied in the first polarity.

4. The system of claim 1, further comprising a valve coupled to the coolant conduit, wherein the valve is configured to move from a first position fluidly connecting the coolant conduit with the engine coolant system to a second position fluidly isolating the coolant conduit from the engine coolant system.

5. The system of claim 4, further comprising a pump configured to pressurize the coolant in the coolant conduit when the valve is in the second position.

6. The system of claim 1, wherein the plurality of modes of operation further comprises a supplemental cooling mode wherein the thermoelectric module is configured to cool the air flow by the thermoelectric element transferring thermal energy from the coolant to the heat transfer medium while receiving electric current supplied in a second polarity and while the internal combustion engine is running.

7. The system of claim 6, further comprising an evaporator operative by the internal combustion engine, the evaporator disposed in the air flow and configured to cool the air flow, wherein the thermoelectric module cooling the air flow in conjunction with the evaporator cooling the air flow provides a faster time to a desired temperature of the passenger cabin.

8. The system of claim 7, wherein the heat exchanger is upstream of the evaporator such that the heat exchanger cools the air flow before the evaporator cools the air flow.

9. The system of claim 1, wherein the heat exchanger is upstream of the heater core such that the heat exchanger heats the air flow before the heater core heats the air flow.

10. The system of claim 1, further comprising an air duct within which the heater core and the heat exchanger are located.

11. The system of claim 1, further comprising a regenerative braking system, wherein the controller is configured to direct electric current generated by the regenerative braking system to the thermoelectric module to generate a temperature change in the thermoelectric element.

12. The system of claim 1, wherein the controller is configured to switch operation of the climate control system from the heatup heating mode to the heating mode when temperature of the coolant from thermal energy of the internal combustion engine reaches the desired temperature to heat the passenger cabin.