EV Charger Power Module Switching for Variable Demand
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Solution Overview
Problem
Electric vehicle charging stations often have underutilized power modules due to variable demand, leading to inefficiencies in power allocation and potential overloading.
Innovation Solution
A dynamic allocation system for power modules across multiple electric vehicle charging stations, allowing power modules to be switchably connected between stations to optimize usage based on current demand.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If power modules are allocated statically to each dispenser, then the system is simple to operate, but the power modules are underutilized during periods of low demand
Solution Approach 1:
The patent implements dynamic allocation of power modules where the control unit continuously monitors demand at multiple dispensers and switchably connects power modules to different dispensers based on real-time needs. This allows the system to adapt power distribution dynamically, maximizing utilization during variable demand while maintaining operational simplicity through automated control.
2Device complexity
If power modules are concentrated in one location, then the system complexity is reduced, but the charging capacity is insufficient during high demand periods
Solution Approach 1:
The patent creates a shared power module pool that can serve multiple dispensers. The control unit intelligently routes power modules to any dispenser that needs them, making the power modules universal resources rather than location-specific. This multi-functional approach increases charging capacity flexibility during high demand while keeping the physical system configuration relatively simple.
3Adaptability or versatility
If power modules are distributed to all dispensers, then the charging capacity is maximized, but the system complexity increases due to multiple power sources
Solution Approach 1:
The patent merges multiple power module resources into a unified, centrally-managed pool that serves all dispensers. Rather than having independent power sources at each dispenser, the system combines power modules into a shared resource that the control unit allocates as needed. This reduces overall system complexity while maintaining maximum charging capacity through centralized coordination.
4Stability of the object's composition
If power modules remain connected to a dispenser, then the connection is stable, but the power modules cannot be reallocated to meet varying demand
Solution Approach 1:
The patent implements dynamic switching capability where power modules can be connected to or disconnected from dispensers based on real-time demand. The control unit monitors connection status and power needs, switching connections dynamically to maintain stability for active charging sessions while enabling reallocation when dispensers become idle or demand changes. This dynamic approach balances connection stability with allocation flexibility.
Data Source
AI summary
Dynamic allocation of power modules for charging electric vehicles is described herein. The charging system includes multiple dispensers that each include one or more power modules that can supply power to any one of the dispensers at a time. A dispenser includes a first power bus that is switchably connected to one or more local power modules and switchably connected to one or more power modules located remotely in another dispenser. The one or more local power modules are switchably connected to a second power bus in the other dispenser. The dispenser includes a control unit that is to cause the local power modules and the remote power modules to switchably connect and disconnect from the first power bus to dynamically allocate the power modules between the dispenser and the other dispenser.