Battery Housing Cooling Layout for Electric Work Vehicle Power Components
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Solution Overview
Problem
Existing electric vehicles face challenges in efficiently cooling high-power components like electric motors and inverters, leading to potential thermal management issues that can affect performance and reliability.
Innovation Solution
A liquid cooling system is integrated into the electric vehicle, featuring a pump, radiator, and fan configuration supported by the chassis, with a surge tank and heat exchanger, ensuring balanced pressure drops in coolant lines and optimized airflow for effective heat dissipation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If electric motors and inverters are mounted in the vehicle, then the vehicle gains propulsion capability, but heat is generated that requires cooling management
Solution Approach 1:
A liquid cooling system with coolant circulating through channels in the electric motor and inverter serves as an intermediary to transfer heat from these power-generating components to the radiator, where heat is dissipated to the ambient air through the fan
Solution Approach 2:
The patent employs a liquid cooling system using coolant circulated by a pump through hydraulic channels integrated into the electric motor and inverter housings, enabling efficient heat removal from high-power components
2Temperature
If a cooling system is added to manage heat from motors and inverters, then temperature control is improved, but the device complexity increases
Solution Approach 1:
The cooling channels are integrated directly into the housing structures of the electric motor and inverter, merging the cooling function with the existing component design rather than adding separate cooling assemblies
Solution Approach 2:
The liquid cooling system serves multiple functions: it cools the electric motor, cools the inverter, and the radiator with fan provides air cooling for both components, creating a multi-functional thermal management system
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
The system provides efficient cooling of electric motors and inverters, maintaining optimal operating temperatures and enhancing the reliability and performance of the vehicle's electrical components.
Implementation Method 1
The pump outputs coolant to cool the at least one electric motor and the at least one inverter
Implementation Method 2
After passing to the at least one electric motor and the at least one inverter, the coolant is received by the radiator
Implementation Method 3
The radiator and the fan are attached on a front surface of the battery housing
Data Source
AI summary
An electric work vehicle includes a chassis, a battery housing to house a plurality of battery modules, a liquid cooling system, at least one electric motor, and at least one inverter. The liquid cooling system includes a pump, a radiator, and a fan. The battery housing is supported by the chassis. The at least one inverter is electrically connected to the plurality of battery modules and the at least one electric motor. The pump is attached to a back surface of the battery housing. The radiator and the fan are attached on a front surface of the battery housing. The at least one inverter is attached to a side surface of the battery housing that faces a width direction. The at least one inverter and the at least one electric motor are mounted between the fan and the pump in a front-rear direction.