Electric Snowmobile Thermal Management via Integrated Heat Exchange
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Solution Overview
Problem
Electric snowmobiles lack a simple and effective method to control the temperature of their batteries and electric motors, as they do not have an air conditioning function and incorporating a heat exchanger would complicate the structure.
Innovation Solution
An electric snowmobile design featuring a body frame with integrated cooling and heat exchange units, including a cooling unit that cools fluid using outside air, and heat exchange units for the battery and electric motor, with flow paths and a flow rate adjusting unit to manage fluid flow and temperature control, along with a heating unit to prevent temperature drops.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a heat exchanger is provided in each of the battery and the electric motor to control their temperatures, then the temperature control effectiveness is improved, but the device structure becomes complicated
Solution Approach 1:
The patent merges the heat exchange functions for the battery and electric motor into a single integrated heat exchanger unit. The heat exchanger includes a common housing with separate first and second heat exchange chambers that share cooling fluid flow paths, allowing simultaneous temperature control of both components without requiring separate heat exchanger assemblies for each.
Solution Approach 2:
The single heat exchanger unit performs multiple functions: it cools the battery through the first heat exchange chamber and cools the electric motor through the second heat exchange chamber. The cooling fan also serves dual purposes by drawing ambient air for cooling both chambers and dissipating heat from the heat exchanger itself, eliminating the need for separate cooling systems.
2Device complexity
If no heat exchange system is provided to simplify the structure, then the device complexity is reduced, but the temperature control capability is insufficient
Solution Approach 1:
The patent merges the heat exchange functions for the battery and electric motor into a single integrated heat exchanger unit. The heat exchanger includes a common housing with separate first and second heat exchange chambers that share cooling fluid flow paths, allowing simultaneous temperature control of both components without requiring separate heat exchanger assemblies for each.
Solution Approach 2:
The heat exchanger system is designed to be self-sufficient by integrating the cooling fan that draws ambient air through the heat exchange chambers and dissipates heat from the heat exchanger itself. The system uses the cooling fluid circulating through the chambers to absorb heat from both the battery and motor, then releases it through the fan-driven airflow, eliminating the need for additional external cooling infrastructure.
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 design allows for efficient heat exchange with a simple structure, effectively cooling and heating the battery and electric motor, maintaining optimal temperatures without the complexity of a traditional heat exchanger.
Implementation Method 1
a cooling unit that cools fluid at least in accordance with outside air
Implementation Method 2
a first heat exchange unit that performs heat exchange between the battery and the fluid
Implementation Method 3
a second heat exchange unit that performs heat exchange between the electric motor and the fluid
Data Source
AI summary
An electric snowmobile that performs heat exchange with a simple structure is provided. The electric snowmobile includes a body frame, a driver's seat, an electric motor, a ski, a track mechanism, a battery, a cooling unit that cools fluid at least in accordance with outside air, a first heat exchange unit that performs heat exchange between the battery and the fluid, a second heat exchange unit that performs heat exchange between the electric motor and the fluid, a first flow path for delivering the fluid cooled in the cooling unit to the first heat exchange unit, a second flow path for delivering the fluid cooled in the cooling unit to the second heat exchange unit, and a third flow path for delivering the fluid heat-exchanged in the first heat exchange unit and the fluid heat-exchanged in the second heat exchange unit to the cooling unit.