Vehicle Power Storage Control for Aggregator-Based Degradation Limits

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Solution Overview

Problem

The existing method for managing power storage devices in vehicles does not provide an incentive for users to avoid deterioration, leading to excessive wear and tear, making it difficult for lease providers to reuse the devices.

Innovation Solution

Implementing a management method that restricts high-power charging and discharging to registered aggregators, limiting energy management to trusted entities to prevent excessive deterioration of power storage devices.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If all aggregators are allowed to perform energy management using the power storage device, then energy management flexibility and aggregator participation are improved, but the power storage device deteriorates excessively due to uncontrolled high-power charging and discharging

Engineering Contradiction:
Improveenergy management flexibilityVSAvoidpower storage device durability
Core Design Contradiction:
Adaptability or versatilityVSReliability

Solution Approach 1:

The patent introduces an intermediary verification mechanism where the control device acts as a mediator between aggregators and the power storage device. It verifies whether each aggregator is registered before permitting high-power energy management operations, thus preventing unauthorized aggregators from causing excessive deterioration while still allowing flexible participation from legitimate aggregators.

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The patent changes the operational parameters of the power storage device based on the aggregator's registration status. When a registered aggregator is verified, high-power charging and discharging operations are permitted; when an unregistered aggregator is detected, these high-power operations are restricted. This dynamic parameter adjustment resolves the contradiction by adapting system behavior to the credibility of the requesting entity.

Inventive Principle:
Principle #35Parameter changes

2Productivity

If high-power charging and discharging are permitted for rapid energy management, then energy management efficiency and response speed are improved, but the power storage device deteriorates faster

Engineering Contradiction:
Improveenergy management efficiencyVSAvoidpower storage device lifespan
Core Design Contradiction:
ProductivityVSDuration of action of stationary object

Solution Approach 1:

The patent implements a feedback mechanism where the control device continuously monitors incoming energy management requests, verifies the aggregator's registration status, and provides real-time control decisions. This feedback loop ensures that high-power operations (which improve efficiency) are only permitted when verified aggregators request them, automatically adjusting operational intensity based on aggregator credibility to balance productivity and device lifespan.

Inventive Principle:
Principle #23Feedback

Solution Approach 2:

The patent makes the power management system dynamic by allowing the charging and discharging power levels to vary based on the aggregator's registration status. Registered aggregators can access high-power modes for rapid energy management, while unregistered aggregators are restricted to lower power levels. This dynamic adaptation resolves the contradiction between efficiency and lifespan by adjusting operational intensity to the user's trustworthiness.

Inventive Principle:
Principle #15Dynamics

3Ease of operation

If the lending fee decreases as full charge capacity decreases, then user cost is reduced, but the user lacks incentive to avoid deterioration and the lease provider cannot easily reuse the device

Engineering Contradiction:
Improveuser costVSAvoiddevice reuseability
Core Design Contradiction:
Ease of operationVSReliability

Solution Approach 1:

The patent introduces an intermediary verification system that mediates between the user's cost considerations and the lease provider's reuseability requirements. By verifying aggregator registration status before permitting high-power operations, the system indirectly incentivizes users to choose registered aggregators who are more likely to operate within safe parameters, thus reducing deterioration while maintaining affordable pricing structures.

Inventive Principle:
Principle #24Intermediary (Mediator)

Data Source

PatentUS20240170990A1Management Method for Power Storage Device, Vehicle Control Device, and Vehicle
Publication Date: 2024.05.23 TOYOTA JIDOSHA KK
  • US20240170990A1 patent drawing
  • US20240170990A1 patent drawing
  • US20240170990A1 patent drawing

AI summary

A management method for a power storage device includes: when energy management by charging or discharging of a power storage device is requested from an aggregator, determining whether or not requested power for charging or discharging exceeds a predetermined value; when the requested power exceeds the predetermined value, if the aggregator having requested is a registered aggregator, performing charging or discharging of the power storage device in accordance with the request; and when the requested power exceeds the predetermined value, if the aggregator having requested is not the registered aggregator, not performing charging or discharging of the power storage device in accordance with the request.