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A Token-based System and Method for Managing a Network of Plugin Hybrid Electric Vehicles Disclosure Number: IPCOM000199937D
Publication Date: 2010-Sep-21

Publishing Venue

The Prior Art Database


We propose a token-based system and associated methods for managing the electricity usage of a network of Plugin Hybrid Electric Vehicles (PHEVs). The electronic tokens in our system are used for accounting electricity usage of PHEVs, and this accounting information is used for controlling the usage, across geographical regions, time, and users. Additionally, this token based system is used for load balancing, incentive based schemes, and effective usage of renewable energy.

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A Token-based System and Method for Managing a Network of Plugin Hybrid Electric Vehicles

Known Solutions:

Our Scheme : Apply a token based approach to manage the electricity usage of PHEVs. The known solutions are broadly in three areas:

PHEV literature: Mainly consists of results for electro-mechanical systems. We didn't find any methods, which are primarily implemented in software using off-the shelf hardware.

Token systems: Almost all the references are related to file or resource sharing. Our solution is tailored to plugin hybrid electric vehicles.

Electronic cash based schemes: These schemes share some similarities with our scheme, since they also deal with distributed accounting. They are also not specific to PHEV systems.

PHEV Systems

[5] describes a docking station for PHEVs in a parking lot. This docking station can be configured by the driver of the car with different constraints for selling power. These docking stations collect power and send them to centralized aggregation units. It presents a method to determine energy prices dynamically. [6]


                          resents a method to calculate the amount of energy that a PHEV can supply to the grid. [7]


                       resents a scheme to predict the state of the battery in the PHEV or the state of the grid at a future point of time. [8] describes a generic PHEV charging system, where the on-board computer stores the charging settings like the amount of energy to draw the grid, and the time of charging. This on-board computer controls the entire charging


 rocess. [3, 4] give a general overview of the different kinds of power sources, and describe the ways PHEVs can possibly fit in.

Token Systems

[9, 10, 11, 12] summarizes some of the recent work in token based computer systems. [9, 10]


 resent tokens based schemes for sharing resources between peers. They use tokens as a proof of service usage. Tokens are also tagged with the name of the original owner. The dynamic distribution of tokens determines the resource usage. [11] uses generalized tokens to evaluate the trustworthiness of nodes in a peer to peer system, and to also ensure fair resource usage. [12] uses a token based scheme to provide incentives to users to collaborate more in a peer to peer setting.

Electronic Cash

The notion of tokens is heavily used by Electronic Cash based schemes [13]. Most e-cash schemes rely on digital tokens. Each digital token is cryptographically signed to ensure its validity. These tokens can be stored offline and can be later presented to a vendor for conversion to real money. [14] describes mobile payment. According to this paradigm, users can quickly make small payments from their mobile phones using a single step authentication protocol consisting of a user code and a pin, which is generate dynamically. The payments can either use real money, or can use virtual money. Virtual money can be in the form or user redeemable



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[1] Plug-in hybrid electric vehicle value proposition s...