Cooling loops and vehicles incorporating the same

• US 10,290,911 B2
• Filed: 05/18/2015
• Issued: 05/14/2019
• Est. Priority Date: 05/18/2015
• Status: Active Grant

• Current Assignee: Toyota Jidosha Kabushiki Kaisha (Toyota Motor Corporation)
• Original Assignee: Toyota Motor Engineering & Manufacturing North America Incorporated (Toyota Motor Corporation)
• Inventors: Zhou, Feng, Dede, Ercan Mehmet, Joshi, Shailesh
• Primary Examiner(s): Rojohn, III, Claire
• Application Number:
  US14/714,652
• Publication Number:
  US 20160344074A1
• Time in Patent Office: 1,457 Days
• Field of Search: 165 41
• CPC Class Codes: B60H 1/00 Heating, cooling or ventilating [HVAC] devices heating, cooling or ventilating devices providing other air treatment, the other treatment being relevant, B60H3/00; ventilating solely by opening windows, doors, roof parts, or the like B60J; heating or ventilating devices for vehicle seats B60N2/56; vehicle window or windscreen cleaners using air, e.g. defrosters, B60S1/54
• CPC Class Codes: B60L 58/26 by cooling
• CPC Class Codes: H01M 10/613 Cooling or keeping cold
• CPC Class Codes: H01M 10/625 Vehicles
• CPC Class Codes: H01M 10/6568 characterised by flow circuits, e.g. loops, located externally to the cells or cell casings
• CPC Class Codes: H01M 10/6569 Fluids undergoing a liquid-gas phase change or transition, e.g. evaporation or condensation heat pipes H01M10/6552
• CPC Class Codes: H01M 10/667 the system being an electronic component, e.g. a CPU, an inverter or a capacitor
• CPC Class Codes: H01M 2220/20 Batteries in motive systems, e.g. vehicle, ship, plane
• CPC Class Codes: Y02E 60/10 Energy storage using batteries
• CPC Class Codes: Y02T 10/70 Energy storage systems for electromobility, e.g. batteries

Abstract

Cooling loops and vehicles including cooling loops include a power module, a cooling loop including a cooler thermally coupled to the power module, a working fluid housed within the cooler, where the working fluid absorbs thermal energy from the power module, a heat exchanger in fluid communication with the cooler, a pump in fluid communication with the heat exchanger and the cooler, and a vehicle component thermally coupled to the cooling loop, where the working fluid from the cooler is selectively directed to the vehicle component.

Claims

1. A vehicle comprising:

a power module comprising a semiconductor device;

a battery pack assembly for providing electric power to the vehicle;

a heating system for heating a cabin of the vehicle, the heating system comprising a heater core;

a cooling loop thermally coupled to the battery pack assembly and the heater core, the cooling loop comprising;

a cooler having an outer surface thermally coupled to an outer surface of the power module;

a working fluid housed within the cooler, wherein the working fluid absorbs thermal energy from the outer surface of the power module;

a heat exchanger in fluid communication with the cooler;

a pump in fluid communication with the heat exchanger and the cooler;

a two-phase side conduit that connects the cooler and the heat exchanger;

a battery conduit thermally coupled to the battery pack assembly and connected to and in fluid communication with the two-phase side conduit;

a battery conduit control valve positioned on the battery conduit, wherein the battery conduit control valve selectively directs the working fluid through the battery conduit;

a heater core conduit thermally coupled to the heater core and connected to and in fluid communication with the two-phase side conduit; and

a heater core control valve positioned on the heater core conduit, wherein the heater core control valve selectively directs the working fluid through the heater core conduit;

a temperature sensor thermally coupled to the battery pack assembly; and

an electronic controller communicatively coupled to at least one of the battery conduit control valve and the heater core control valve, the temperature sensor, and the heating system, the electronic controller comprising a processor and a memory that stores a computer-readable instruction set, wherein, when the computer-readable instruction set is executed by the processor, the electronic controller;

detects a temperature of the battery pack assembly with the temperature sensor;

detects a disengagement of the heating system; and

commands at least one of the battery conduit control valve and the heater core control valve to direct the working fluid from the cooler to at least one of the battery pack assembly and the heater core based on at least one of the detected temperature of the battery pack assembly and the disengagement of the heating system.

2. The vehicle of claim 1, further comprising at least one thermoelectric generator thermally coupled to the cooling loop.

3. The vehicle of claim 2, wherein the at least one thermoelectric generator comprises a first portion and a second portion, the first portion thermally coupled to the cooling loop and the second portion exposed to a medium that has a lower temperature than the cooling loop.

4. The vehicle of claim 3, wherein the cooling loop further comprises:

a two-phase side conduit that connects the cooler and the heat exchanger; and

a two-phase bypass loop that is connected to and in fluid communication with the two-phase side conduit.

5. The vehicle of claim 4, wherein the at least one thermoelectric generator is thermally coupled to the two-phase bypass loop.

6. The vehicle of claim 3, wherein the cooling loop further comprises:

a liquid side conduit that connects the heat exchanger and the pump; and

a liquid bypass loop that is connected to and in fluid communication with the liquid side conduit.

7. The vehicle of claim 6, wherein the cooling loop further comprises at least one control valve that selectively directs the working fluid through the liquid bypass loop.

8. The vehicle of claim 6, wherein the at least one thermoelectric generator is thermally coupled to the liquid bypass loop.

9. The vehicle of claim 1, wherein the battery conduit and the heater core conduit are connected to one another by an intermediate conduit.