Closed Loop Heating Circuit for Efficient EV Thermal Management
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Summary
Problems
Electric vehicles face increased weight and cost due to dual coolant lines for auxiliary heating and cooling systems, which reduces their range, especially in larger and autonomous vehicles that generate more waste heat, necessitating additional refrigeration loops.
Innovation solutions
A closed loop auxiliary heating circuit that utilizes waste heat from vehicle electronics to warm the cabin, eliminating the need for underbody heater lines and reducing refrigeration workload, featuring a coolant loop, pump, auxiliary heater core bypass line, flow control device, anti-flowback device, chiller, and control module to manage heat transfer efficiently.
TRIZ Analysis
Specific contradictions:
General conflict description:
Principle concept:
If two sets of coolant lines are used for auxiliary heating and EV cooling systems, then both heating and cooling functions are provided, but system weight and cost increase significantly
Why choose this principle:
The patent merges the auxiliary heating coolant lines with the EV cooling system by routing the auxiliary heater core through the existing EV cooling lines. This allows a single coolant circulation system to serve both the EV cooling function and the auxiliary heating function, eliminating redundant underbody heater lines and reducing overall system weight.
Principle concept:
If two sets of coolant lines are used for auxiliary heating and EV cooling systems, then both heating and cooling functions are provided, but system weight and cost increase significantly
Why choose this principle:
The EV cooling system is designed to perform multiple functions: cooling the EV powertrain components and providing auxiliary heating to the cabin through the heater core. The same coolant circulation system and routing are used for both purposes, making the system universal and eliminating the need for separate dedicated heating lines.
Application Domain
Data Source
AI summary:
A closed loop auxiliary heating circuit that utilizes waste heat from vehicle electronics to warm the cabin, eliminating the need for underbody heater lines and reducing refrigeration workload, featuring a coolant loop, pump, auxiliary heater core bypass line, flow control device, anti-flowback device, chiller, and control module to manage heat transfer efficiently.
Abstract
A closed loop auxiliary heating circuit includes a coolant, a closed loop coolant line and a pump for circulating the coolant through the closed loop coolant line between a computing device and an auxiliary heater core whereby heat is transferred from the computing device to the auxiliary heater core to heat the cabin of an electric motor vehicle. An electric motor vehicle incorporating the closed loop auxiliary heating circuit is also disclosed.