Electric Power Machine Burst Control for Longer Battery Operation
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Solution Overview
Problem
Conventional electrically powered power machines face limitations in energy storage capacity, leading to potential depletion of battery packs quickly, preventing completion of tasks on a single charge, and lack efficient power management systems to optimize power consumption and extend operation time.
Innovation Solution
Implementing a power management system that includes different power modes with operational parameters to control power delivery and consumption, allowing temporary power bursts beyond rated limits with constraints, and prioritizing power delivery to critical actuators over ancillary loads to conserve energy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of moving object
If battery pack capacity is increased to extend operation time, then duration of action is improved, but device complexity and weight increase
Solution Approach 1:
The system dynamically adjusts power delivery to actuators based on real-time operational conditions, transitioning between standard and power burst modes. The control device continuously monitors actuator requests and operational state to optimize power consumption patterns, extending operation time without requiring larger battery capacity.
Solution Approach 2:
The system changes operational parameters by implementing different power modes (standard mode and power burst mode) with distinct power delivery characteristics. During power burst mode, the system temporarily increases power delivery beyond standard limits to satisfy high-demand actuator requests, then returns to standard mode for normal operation, effectively extending operational duration through parameter variation rather than increasing battery capacity.
2Productivity
If power delivery to actuators is increased beyond rated limits, then productivity is improved, but use of energy increases rapidly
Solution Approach 1:
The system employs periodic power burst modes interspersed with standard operation modes. When actuator power requests exceed thresholds, the system temporarily enters power burst mode to deliver enhanced power for improved productivity. After the high-demand period concludes, the system returns to standard mode to conserve energy, creating a periodic pattern of high and normal power delivery that balances productivity with energy conservation.
Solution Approach 2:
The system applies partial excessive action by allowing power delivery to exceed standard rated limits only when specifically requested by actuators during high-demand operations. The control device compares actuator power requests against thresholds and selectively activates power burst mode only when necessary, rather than continuously operating at excessive power levels. This selective approach achieves improved productivity during critical moments while maintaining energy efficiency during normal operation.
Data Source
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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.