How a System Tracks and Transfers Rechargeable Batteries Between Users

This patent describes a system that verifies a rechargeable battery's actual capacity and then updates which user is associated with that specific battery, especially useful for shared or transferable batteries.

What it covers

The system starts with a 'battery status acquisition unit' that collects unique identification data for a rechargeable battery and its electrical characteristics, like voltage or internal resistance, while it's connected, charging, or discharging (Claim 1, Claim 5). Next, a 'battery capacity authentication unit' calculates the battery's true usable capacity based on these electrical characteristics and confirms it as an 'authentication capacity' (Claim 1). This authenticated capacity, along with the battery's ID, is stored in a 'battery management database' on a central server. Separately, a 'user management database' links user information to specific battery IDs. Crucially, a 'user data modification unit' can change which user is linked to a battery's ID, potentially based on the authenticated capacity (Claim 2) or even an offer from another user to acquire that battery (Claim 4). For example, if you return a rental power bank, the system could authenticate its remaining capacity and then reassign it to the next user who rents it, ensuring its health is known.

What it doesn't cover

• —Does not cover a simple battery charging system that doesn't authenticate the battery's actual chargeable capacity.
• —Does not cover a system that tracks battery usage but does not allow modification of the association between a user and a specific battery.
• —Does not cover a system where the authenticated capacity isn't derived from the battery's electrical characteristics, such as voltage or resistance.
• —Does not cover a system that manages batteries without a central management server and associated databases for battery and user data.
• —Does not cover systems that only monitor battery health without enabling the transfer or re-assignment of the battery to a different user based on its authenticated capacity.

The clever bit

The innovation lies in combining the precise authentication of a battery's real-world capacity using its electrical characteristics with the ability to dynamically reassign that specific battery to different users in a managed system. This ensures transparency and accurate value assessment for shared or transferred batteries.

Why it matters

This system is important for managing rechargeable batteries in scenarios where they are shared, rented, or frequently change hands. By authenticating a battery's actual capacity and dynamically linking it to users, it enables more efficient use, fair pricing based on battery health, and better tracking of battery lifecycles. This could support the growth of battery-as-a-service models and circular economy initiatives.

Real-world examples

• 1.Battery swapping stations for electric scooters or motorcycles
• 2.Rental power bank services in public spaces
• 3.Managed battery pools for shared tools or devices
• 4.Systems for tracking and re-selling refurbished batteries