Vehicle Battery Green Power Index Tracking During Charge and Discharge

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Solution Overview

Problem

Existing systems for managing electric power in vehicles do not effectively track and differentiate the index value of green power, which is generated from renewable energy, from normal power, leading to potential undervaluation of green power and inefficient energy management.

Innovation Solution

A computing device integrated with a vehicle's battery system that stores and updates an index value of electric energy from renewable sources, allowing for accurate tracking and differentiation between green and normal power, both during charging and discharging, and notifies users of energy usage and value.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Loss of information

If green power is valued higher than normal power to promote environmental protection, then the valuation of green power is improved, but the system complexity increases due to the need to track and differentiate power sources

Engineering Contradiction:
Improvetracking green power index valueVSAvoidpower management system complexity
Core Design Contradiction:
Loss of informationVSDevice complexity

Solution Approach 1:

The patent segments the electric power into two distinct types: green power (first power) from renewable sources and normal power (second power) from non-renewable sources. The memory stores separate accumulated information for each power type, including their respective index values. This segmentation allows the system to track and differentiate power sources without requiring complex external tracking infrastructure.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The power management system performs self-service by automatically tracking and updating the accumulated information of green and normal power internally. The controller updates the memory with charging information (first information) when the battery is charged and discharging information (second information) when power is discharged, eliminating the need for external tracking systems and reducing overall system complexity.

Inventive Principle:
Principle #25Self-service

2Measurement precision

If the system tracks detailed power source information to ensure accurate green power valuation, then measurement precision is improved, but the ease of operation deteriorates due to more complex data management

Engineering Contradiction:
Improvegreen power index value accuracyVSAvoidenergy management operation simplicity
Core Design Contradiction:
Measurement precisionVSEase of operation

Solution Approach 1:

The patent merges the tracking of green power and normal power into a single integrated memory structure that stores accumulated information for both power types. The controller automatically manages the updating of this combined information based on charging and discharging events, eliminating the need for separate tracking systems and simplifying operation while maintaining precise measurement of green power index values.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The system implements feedback mechanisms where the controller continuously monitors battery charging and discharging states, automatically updates the accumulated information in memory, and maintains accurate tracking of green power index values. This automated feedback loop ensures measurement precision without requiring manual intervention or complex user operations.

Inventive Principle:
Principle #23Feedback

3Reliability

If the system updates accumulated information for both charging and discharging to maintain accurate green power tracking, then reliability is improved, but the loss of time increases due to frequent updates

Engineering Contradiction:
Improvegreen power tracking reliabilityVSAvoidupdate processing time
Core Design Contradiction:
ReliabilityVSLoss of time

Solution Approach 1:

The system performs preliminary action by pre-allocating and pre-structuring the memory to store accumulated information for both green and normal power. The controller is pre-programmed with the logic to automatically update this information based on charging and discharging events, eliminating the need for complex real-time calculations and reducing update processing time while maintaining reliable tracking.

Inventive Principle:
Principle #10Preliminary action

Data Source

PatentEP4331893A1Computing device, vehicle, management server, and computing method
Publication Date: 2024.03.06 TOYOTA JIDOSHA KK
  • EP4331893A1 patent drawingFigure 1
  • EP4331893A1 patent drawingFigure 2
  • EP4331893A1 patent drawingFigure 3

AI summary

A computing device (500) for a battery (130) mounted on a vehicle (50) is provided. The battery (130) stores electric power including first power obtained from renewable energy and second power different from the first power. The computing device (500) includes a memory (252) and a controller (251) that controls the memory (252). The memory (252) stores accumulated information (170) including an index value of electric energy of the first power stored in the battery (130). When the battery (130) is charged by a power device (40) provided outside the vehicle (50), the computing device (500) updates the accumulated information (170) based on first information (171) related to the first power used for charging. When the electric power in the battery (130) is discharged to the power device (40), the computing device (500) updates the accumulated information (170) based on second information (172) related to the first power used for discharging.