Vehicle Power Management Apparatus for Rotating Machine Durability
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Solution Overview
Problem
Conventional technologies do not consider the durability of rotating machines like radiator fans and water pumps in electric vehicles participating in vehicle-to-grid (V2G) systems, leading to potential travel disruptions when the number of rotations reaches an upper limit.
Innovation Solution
A management apparatus and method that tracks and limits the number of rotations of rotating machines within a vehicle, ensuring electric power transfer between the vehicle and the power system does not exceed the machine's durability limits, by integrating rotation data from various operational states and adjusting limits accordingly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If electric power transfer is increased to maximize V2G operation, then power system utilization is improved, but rotating machine durability deteriorates due to excessive rotations
Solution Approach 1:
The system performs preliminary actions by acquiring the integrated number of rotations before V2G operation begins, and pre-calculating the upper limit number of rotations based on durability requirements. This allows the system to establish rotation constraints in advance, preventing durability issues before they occur during power transfer operations.
Solution Approach 2:
The system dynamically adjusts V2G operation parameters based on real-time rotation monitoring. When the integrated number of rotations approaches the upper limit, the system modifies power transfer operations to maintain durability, creating a dynamic balance between productivity and reliability during the operation lifecycle.
2Reliability
If rotation monitoring is implemented to protect rotating machines, then machine durability is improved, but system complexity increases due to additional tracking mechanisms
Solution Approach 1:
The system implements feedback by continuously acquiring the integrated number of rotations during V2G operation and comparing it against the predetermined upper limit. This feedback mechanism enables automatic adjustment of power transfer operations to ensure durability constraints are met without requiring complex manual monitoring or intervention systems.
Solution Approach 2:
The management apparatus performs self-service by autonomously managing rotation tracking and durability constraint enforcement. The system automatically acquires rotation data, calculates integrated values, compares them against limits, and adjusts operations accordingly, eliminating the need for external monitoring infrastructure or complex additional tracking mechanisms.
Data Source
AI summary
A management apparatus manages electric power transfer between a power system and a secondary battery mounted in a vehicle and storing electric power for traveling. The management apparatus includes a storage configured to store an upper limit number of rotations of a rotating machine included in the vehicle, and a controller configured to acquire an integrated number of rotations of the rotating machine that is measured from a start time of a warranty period of the vehicle and to limit electric power transfer between the power system and the secondary battery when the integrated number of rotations is equal to or greater than the upper limit number of rotations.