Electric Crane Cooling Layout With Parallel Heat Exchangers
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Solution Overview
Problem
There is a demand for motorized cranes that can travel using electric power to address environmental concerns.
Innovation Solution
A crane design incorporating a traveling vehicle body powered by a motor driven by a power supply unit, with a first cooling system featuring multiple cooling devices dispersedly arranged and connected in parallel to cool various components, including a high-voltage battery, hydraulic systems, and electric motors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple cooling devices are dispersedly arranged and connected in parallel, then the cooling reliability and heat dissipation efficiency are improved, but the device complexity increases
Solution Approach 1:
The cooling system is divided into multiple independent cooling devices that are dispersedly arranged on the traveling vehicle body. Each cooling device operates independently to cool specific heat-generating components, providing segmentation of the cooling function. This segmentation improves reliability by ensuring that failure of one cooling device does not affect the others, while the modular nature helps manage system complexity.
Solution Approach 2:
Multiple cooling devices are connected in parallel to form an integrated cooling system. The parallel connection allows the system to combine the cooling capacity of individual devices while maintaining independent operation. This merging approach enhances overall heat dissipation efficiency and reliability without requiring a completely separate cooling system for each component.
2Object-generated harmful factors
If a motor is used to replace the engine for traveling, then environmental sustainability is improved, but the heat dissipation requirements and cooling system complexity increase
Solution Approach 1:
The internal combustion engine is replaced with an electric motor, substituting a mechanical-thermal system with an electrical system. This substitution eliminates exhaust emissions and improves environmental sustainability. However, it introduces new heat dissipation challenges from the motor and power supply unit, requiring an engineered cooling system with multiple dispersed cooling devices to manage the thermal load effectively.
3Reliability
If multiple cooling devices are dispersedly arranged, then the heat dissipation coverage is improved, but the space requirements and device layout complexity increase
Solution Approach 1:
Cooling devices are dispersedly arranged at specific locations on the traveling vehicle body where heat-generating components are positioned. Each cooling device is locally optimized to cool its corresponding component, providing targeted heat dissipation. This local quality approach ensures efficient heat dissipation coverage while minimizing unnecessary space occupation by placing cooling devices only where thermally required.
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
Enables cranes to travel and operate using electric power, enhancing environmental sustainability while effectively cooling critical components to ensure efficient performance.
Implementation Method 1
a first cooling system that cools a lower electric device, in which the first cooling system includes a plurality of cooling devices dispersedly arranged on the traveling vehicle body, connected in parallel to each other, and configured to cool a fluid flowing through a circuit of the first cooling system
Data Source
AI summary
This crane comprises a traveling vehicle body that travels through use of a motor driven by a power supply unit, and a first cooling system for cooling the motor, the first cooling system having a plurality of cooling devices that are distributed in the traveling vehicle body and connected in parallel with each other, and that cool a fluid that flows through a circuit of the first cooling system.