Hybrid type heating system capable of supplying heat and hot water
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Solution Overview
Problem
Electric vehicles face reduced range in winter due to battery capacity decrease under low ambient temperatures, and conventional PTC heaters consume significant battery power with low efficiency, necessitating a technology to heat air and water without battery usage to maintain battery performance.
Innovation Solution
A hybrid type heating system with a burner, first and second heat exchangers, and a flow controller that generates combustion heat to heat air and water independently, allowing for controlled distribution of heat to maintain battery performance without battery assistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If a PTC heater is used for heating in an electric vehicle, then heating function is provided, but battery power is significantly consumed reducing driving range
Solution Approach 1:
The heating system is divided into two independent heating paths: one for heating air (through the first heat exchanger and heater core) and one for heating cooling water (through the second heat exchanger and radiator). This segmentation allows selective heating based on temperature requirements, enabling heating without necessarily consuming battery power for both systems simultaneously.
Solution Approach 2:
The system utilizes waste heat from the internal combustion engine to provide heating for both the cabin and battery thermal management. The engine's exhaust heat, which would otherwise be wasted, is captured and distributed to meet heating demands, making the system self-sufficient and eliminating the need for battery-powered PTC heaters.
2Temperature
If battery power is shared with air conditioning system in winter heating season, then heating function is provided, but battery capacity for driving decreases
Solution Approach 1:
The internal combustion engine acts as an intermediary heat source, converting chemical energy to thermal energy that then heats both the cabin air and cooling water. This intermediary approach bypasses the need for direct battery-to-heating energy conversion, preserving battery capacity for driving while providing comprehensive heating.
3Temperature
If battery capacity is used for heating under low ambient temperature, then heating is provided, but battery capacity decreases further due to temperature effects
Solution Approach 1:
The system performs preliminary heating of the battery through the second heat exchanger and radiator before the battery temperature drops to critical levels. By proactively maintaining battery temperature using waste engine heat, the system prevents battery capacity degradation that would occur if heating were delayed until temperatures became critically low.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This system effectively heats air and water without battery usage, maintaining battery performance and extending electric vehicle range by using combustion heat to regulate indoor temperature and battery temperature, thus preventing battery capacity decrease in low temperatures.
Implementation Method 1
a burner of which an exterior surface is in contact with the air in the cylinder and which combusts fuel to generate combustion heat
Implementation Method 2
a first heat exchanger which heats the air in the cylinder by using combustion heat supplied through a first channel pipe
Implementation Method 3
a second heat exchanger which heats heating water by using combustion heat supplied through a second channel pipe
Implementation Method 4
a pump which circulates the heating water around a battery
Data Source
AI summary
There is provided a hybrid type heating system capable of heating air and water together. As an embodiment, the present invention provides a technology of carrying out heating not using a battery in an electric vehicle, a technology of heating a battery so that performance of the battery does not decrease under a low outdoor temperature condition, and a technology of carrying out heating with not decreasing driving distance of the electric vehicle or increasing the driving distance of the electric vehicle.