Vehicle Battery Management via Temperature-Adaptive Current Control

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Solution Overview

Problem

The challenge lies in efficiently managing electric vehicle batteries to slow down degradation, optimize energy usage, and integrate battery management systems that adapt to ambient temperature and vehicle operations, as existing methods fail to effectively control charging and discharging currents and temperatures, leading to battery degradation.

Innovation Solution

A system and method that utilize a power network server to collect and analyze energy consumption data, convert ambient temperature-based energy consumption, calculate and manage charging and discharging currents, and control battery temperature by activating fans and pumps based on reference temperatures, thereby optimizing battery health and usage.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If charging and discharging currents are increased to improve energy utilization efficiency, then productivity is improved, but battery degradation accelerates and reliability deteriorates

Engineering Contradiction:

Improveenergy utilization efficiencyVSAvoidbattery lifespan

Core Design Contradiction:

ProductivityVSReliability

Solution Approach 1:

The patent implements dynamic adjustment of charging and discharging currents based on real-time battery state monitoring. The power network server continuously receives battery data (temperature, charge level, current) and dynamically modifies charging/discharging rates to optimize energy utilization while preventing degradation. This dynamic control resolves the contradiction by adapting current levels to actual battery conditions rather than using fixed high currents.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The system establishes a feedback loop where the power network server continuously monitors battery state (temperature, charge level, current consumption) and uses this feedback to adjust charging/discharging strategies. The server calculates optimal current levels based on accumulated data and sends control signals back to the vehicle's power supply system, ensuring high energy utilization without exceeding battery degradation thresholds.

Inventive Principle:

Principle #23Feedback

2Use of energy by moving object

If battery temperature is increased to improve energy consumption performance, then use of energy is improved, but battery degradation accelerates and reliability worsens

Engineering Contradiction:

Improveenergy consumption performanceVSAvoidbattery lifespan

Core Design Contradiction:

Use of energy by moving objectVSReliability

Solution Approach 1:

The patent utilizes temperature as a key parameter for controlling battery operation. The power network server monitors battery temperature and adjusts charging/discharging currents accordingly, maintaining temperature within an optimal range that balances energy consumption performance with battery longevity. By dynamically changing operational parameters based on temperature feedback, the system prevents both underperformance and degradation.

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The system implements preventive temperature management by monitoring battery temperature trends and adjusting charging/discharging rates before excessive heat accumulation occurs. The power network server calculates predicted temperature increases based on current operating conditions and proactively reduces current levels to prevent temperature-related degradation, cushioning against potential reliability issues before they manifest.

Inventive Principle:

Principle #11Beforehand cushioning (Prior cushioning)

3Ease of operation

If ambient temperature based energy consumption is used directly for charging management, then ease of operation is improved, but manufacturing precision of energy management deteriorates

Engineering Contradiction:

Improvecharging management simplicityVSAvoidenergy consumption accuracy

Core Design Contradiction:

Ease of operationVSManufacturing precision

Solution Approach 1:

The patent implements a preliminary processing step where ambient temperature based energy consumption data is converted to reference temperature based learned energy consumption before being used for charging management. The power network server accumulates and processes energy consumption data under various temperature conditions, creating a corrected reference dataset that accounts for temperature effects. This preliminary correction improves the precision of subsequent charging decisions without significantly complicating the overall system operation.

Inventive Principle:

Principle #10Preliminary action

Data Source

PatentUS10434892B2System and method for managing battery for vehicle, and vehicle thereof

Publication Date: 2019.10.08 HYUNDAI MOTOR CO LTD

AI summary

Disclosed herein are a system and method for managing a battery for vehicle and vehicle thereof. A power network server includes a controller and a memory storing a program to be executed in the controller. The program includes instructions for collecting information about energy consumption of the battery and information about a vehicle state from the vehicle, converting an ambient temperature based energy consumption to a reference temperature based learned energy consumption, calculating a charging or discharging amount of energy by reflecting the current ambient temperature based on the converted learned energy consumption, setting a range of charging or discharging current based on the charging or discharging amount of energy and an extra amount of energy, and managing the battery based on the set range of charging or discharging current.