Charging Pile Power Redistribution Using Charge Curve Slope

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Solution Overview

Problem

Existing charging pile systems fail to dynamically adjust power distribution based on actual charging requirements, leading to inefficiencies such as underutilization of power and inability to quickly respond to changes in vehicle charging demands.

Innovation Solution

A method that calculates a charge curve slope, determines an ideal charge value, adjusts power constants based on slope values, and redistributes power margins to optimize power distribution across charging piles.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If theoretical power values are directly assigned to each electric vehicle using existing algorithms, then power distribution can be calculated, but the actual charging power is lower than distributed power resulting in underutilization of charging pile output power and decreased system efficiency

Engineering Contradiction:

Improvesystem efficiencyVSAvoidpower underutilization

Core Design Contradiction:

ProductivityVSLoss of energy

Solution Approach 1:

The patent implements dynamic power distribution by continuously monitoring actual charging power consumption and adjusting distributed power in real-time. The system transitions from static theoretical power assignment to dynamic power allocation that adapts to actual charging needs, ensuring power is always optimized according to real-time battery charging characteristics and vehicle requirements.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The patent establishes a feedback mechanism where the system monitors actual charging power consumption and uses this information to adjust future power distribution decisions. By comparing distributed power with actual charging power and analyzing the difference through charge curve slope, the system learns and adapts to optimize power utilization, eliminating the gap between theoretical and actual power usage.

Inventive Principle:

Principle #23Feedback

2Productivity

If existing power distribution algorithms are used, then initial power distribution can be established, but the system cannot adjust power distribution according to dynamic changes in the charging process limiting charging pile system performance

Engineering Contradiction:

Improvecharging pile system performanceVSAvoidresponse to dynamic changes

Core Design Contradiction:

ProductivityVSAdaptability or versatility

Solution Approach 1:

The patent makes the power distribution system dynamic by continuously monitoring charging state changes and adjusting power allocation in real-time. The system responds to dynamic changes such as vehicles completing charging, new vehicles arriving, or changing charging requirements by recalculating and redistributing power using charge curve slope analysis, ensuring optimal performance under varying conditions.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The patent performs preliminary calculations of charge curve slope and predicts future charging power needs based on current charging state. By analyzing the slope of the charge curve, the system anticipates upcoming power requirements and prepares optimal power distribution strategies in advance, enabling proactive rather than reactive power management.

Inventive Principle:

Principle #10Preliminary action

3Quantity of substance

If power is distributed without considering charge curve characteristics, then simplified power allocation can be implemented, but the distribution margin is wasted resulting in less charging power for later electric vehicles

Engineering Contradiction:

Improveavailable charging powerVSAvoiddistribution margin waste

Core Design Contradiction:

Quantity of substanceVSLoss of energy

Solution Approach 1:

The patent changes the approach from distributing fixed theoretical power values to distributing power based on dynamic parameters including charge curve slope, actual charging power consumption, and battery charging characteristics. By continuously adjusting the distributed power parameter according to these changing conditions, the system maximizes power utilization and eliminates distribution margin waste.

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The patent replaces the simple algorithmic power distribution mechanism with a more sophisticated system that incorporates charge curve analysis and slope calculation. Instead of directly assigning theoretical power values, the system uses charge curve characteristics to determine optimal power distribution, substituting a more complex but effective control mechanism that prevents power waste.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Data Source

PatentEP4574547A1Method of dynamically distributing output powers of charging piles

Publication Date: 2025.06.25 DELTA ELECTRONICS INC(CN)

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AI summary

A method of dynamically distributing output powers of charging piles (10-1 to 10-N) configured to perform steps on all charging guns of the charging piles (10-1 to 10-N) in sequence, and the method includes steps of: (a) calculating a charge curve slop, (b) calculating an ideal charge value (Pi) according to a range of the charge curve slop, (c) calculating a distribution margin value (Pm) if a distributed power (Pd) is greater than the ideal charge value (Pi), (d) performing steps (a) to (c), and acquiring an accumulated margin value by accumulating the distribution margin values (Pm) after completing the calculation of the distribution margin value (Pm) of each charging gun, (e) redistributing the output powers of the charging piles (10-1 to 10-N).