Electric Power Machine Burst Mode for Runtime-Limited Batteries
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Solution Overview
Problem
Conventional electrically powered power machines face limitations in energy storage and runtime due to lower energy density compared to combustion-powered machines, leading to potential depletion of battery packs during extended use, preventing completion of tasks on a single charge.
Innovation Solution
Implementing advanced power management systems and methods that allow for different operational modes, including a power burst mode, to optimize power delivery and consumption, prioritize electrical loads, and manage energy storage effectively, thereby prolonging runtime and enabling tasks to be completed without immediate recharging.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If battery packs are used to power electrically powered power machines, then the machines can operate without combustion emissions, but the runtime is limited due to lower energy density compared to combustion-powered machines
Solution Approach 1:
The system dynamically switches between standard operating mode and power burst mode based on real-time power availability and operational conditions. The control device adjusts power delivery to actuators dynamically, allowing the machine to operate efficiently during standard mode and deliver maximum power during brief burst periods when energy permits, thereby extending effective runtime while maintaining emission-free operation
Solution Approach 2:
The system changes operational parameters by implementing different power modes (standard mode with rated power limits and power burst mode with exceeded power thresholds). This parameter change allows the machine to adapt its power consumption profile to match battery energy density limitations, optimizing runtime by operating at lower power levels during standard conditions and utilizing higher power only when energy reserves allow
2Power
If power is increased above rated power for actuators, then work capacity is improved, but energy consumption increases rapidly
Solution Approach 1:
The system implements periodic action by allowing power bursts above rated power thresholds only for limited durations and at specific intervals. The control device monitors energy consumption continuously and permits exceeding power thresholds only when energy reserves are sufficient, creating a rhythmic pattern of high-power intervals followed by lower-power operation that maintains work capacity while managing overall energy consumption within battery limits
Data Source
AI summary
A control device for a power machine can be configured to receive a request to initiate a power burst mode for the power machine, wherein the power burst mode defines one or more operational parameters for increasing an amount of power used by at least one of the plurality of electrical actuator. The control device may receive data associated with one or more operational conditions of the power machine and assess a power burst constraint associated with the power burst mode. In response to the power burst constraint being satisfied, the control device may control power to at least one of the plurality of electrical actuators according to the one or more operational parameters of the power burst mode.