EV Battery Conditioning Using Scheduled Thermal Preheating

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Solution Overview

Problem

Existing battery conditioning methods for electric vehicles fail to optimize battery temperature before charging, leading to suboptimal charging performance and extended charging times, especially in extreme temperatures.

Innovation Solution

A method that uses charging scheduling information to adjust and manage the battery temperature to an optimum level before the electric vehicle arrives at a charging station, employing integrated thermal management that includes both battery cooling and heating.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If battery temperature is not controlled before charging, then the vehicle can be charged at any time, but the charging performance deteriorates and charging time extends

Engineering Contradiction:

Improvecharging speedVSAvoidcharging time

Core Design Contradiction:

ProductivityVSLoss of time

Solution Approach 1:

The system performs preliminary battery temperature conditioning before charging by activating heating or cooling operations in advance based on predicted charging time and current battery temperature, ensuring the battery reaches optimal temperature range before charging begins

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The system uses predicted charging time information to proactively adjust battery temperature before the charging event occurs, rather than reacting during charging, thereby preventing charging performance degradation

Inventive Principle:

Principle #10Preliminary action

2Temperature

If battery heating operation is extended during parking, then battery temperature increases, but the operating time is insufficient to raise battery temperature adequately

Engineering Contradiction:

Improvebattery temperatureVSAvoidheating operation time

Core Design Contradiction:

TemperatureVSDuration of action of moving object

Solution Approach 1:

The system calculates the required heating duration in advance based on the difference between current and target battery temperatures, and activates the heating operation early enough to ensure adequate temperature rise before charging

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The system continuously monitors battery temperature during heating operation and adjusts the heating duration dynamically based on real-time temperature feedback to ensure the target temperature is reached

Inventive Principle:

Principle #23Feedback

3Temperature

If battery conditioning is performed using only heating function, then battery temperature increases in cold conditions, but battery temperature cannot be reduced in hot conditions

Engineering Contradiction:

Improvebattery temperatureVSAvoidtemperature control range

Core Design Contradiction:

TemperatureVSAdaptability or versatility

Solution Approach 1:

The system implements a dual-function thermal management capability that includes both heating and cooling operations, allowing the battery temperature to be adjusted to the optimal range regardless of whether the ambient temperature is high or low

Inventive Principle:

Principle #6Universality (Multi-functionality)

4Productivity

If charging is performed without temperature optimization, then charging can proceed immediately, but charging performance is suboptimal and energy efficiency decreases

Engineering Contradiction:

Improvecharging performanceVSAvoidenergy efficiency

Core Design Contradiction:

ProductivityVSUse of energy by moving object

Solution Approach 1:

The system performs preliminary temperature conditioning of the battery before charging to ensure optimal charging performance, accepting the energy cost of heating or cooling as a trade-off for improved charging efficiency and reduced overall energy loss

Inventive Principle:

Principle #10Preliminary action

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

This approach maximizes battery charging performance and shortens charging time by ensuring the battery is at an optimal temperature for charging, thereby improving overall vehicle efficiency and commercial viability.

Implementation Method 1

a battery heating function operates only at extremely low temperatures below -10 degrees Celsius

Methodology Applied

Scientific EffectHeating: Heating

Implementation Method 2

performing an integrated thermal management that enables both cooling and heating of the battery for temperature control

Methodology Applied

Scientific EffectCooling: Cooling

Implementation Method 3

The temperature of the battery mounted in the EV rises due to an internal chemical reaction during charging

Methodology Applied

Scientific EffectChemical reaction: Exothermic Reaction

Data Source

PatentEP4282697B1Method for battery conditioning of vehicle

Publication Date: 2025.01.22 HYUNDAI MOTOR CO LTD

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AI summary

In accordance with an embodiment, a method includes: receiving charging scheduling information including a scheduled vehicle departure time and a destination set by a user through an interface unit; determining whether a remaining time to the scheduled vehicle departure time from a current time has reached a set time; determining a required battery conditioning time required until a current battery temperature reaches a preset target temperature; determining a total estimated required time to arrival at the destination from the current time by reflecting real-time traffic information; and performing control of a thermal management system of the vehicle by adjusting the current battery temperature to the target temperature when the determined total estimated required time is less than the determined required battery conditioning time.