Battery Temperature Adjustment via Scheduled Cooling

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Solution Overview

Problem

Existing battery temperature regulation systems for vehicles often face insufficient cooling capacity, leading to restricted battery output during charging and high-load traveling, especially when air conditioning is restricted, compromising convenience and safety.

Innovation Solution

A battery temperature adjustment system that includes a control device capable of acquiring scheduled travel plans, planning normal cooling controls, and creating temperature adjustment plans to distribute cooling capacity effectively between the battery and air conditioning, preventing overheating by allocating cooling resources before an overshoot occurs.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Temperature

If the air conditioning device is restricted to cool the battery, then the battery temperature can be controlled, but convenience is deteriorated

Engineering Contradiction:

Improvebattery temperatureVSAvoidconvenience

Core Design Contradiction:

TemperatureVSEase of operation

Solution Approach 1:

The control device performs preliminary cooling of the battery before charging begins by acquiring the scheduled travel plan and calculating required cooling capacity in advance. This allows the battery to be cooled to the target temperature range before high-load charging starts, preventing overheating without needing to restrict air conditioning during charging, thus maintaining user convenience.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The system dynamically adjusts the cooling strategy based on real-time conditions and scheduled travel plans. The control device calculates the required cooling capacity distribution between the air conditioning device and battery temperature adjustment device, optimizing cooling resource allocation dynamically rather than using a fixed restriction approach.

Inventive Principle:

Principle #15Dynamics

2Temperature

If the cooling capacity is increased to cool the battery before charging, then the battery temperature can be reduced, but the air conditioning performance may be compromised

Engineering Contradiction:

Improvebattery temperatureVSAvoidair conditioning capacity

Core Design Contradiction:

TemperatureVSPower

Solution Approach 1:

The total cooling capacity is segmented and distributed between two devices: the air conditioning device and the battery temperature adjustment device. The control device calculates the required cooling capacity distribution, allocating cooling resources appropriately to each device based on the scheduled travel plan and real-time battery temperature, ensuring both battery cooling and cabin comfort are maintained.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The system changes the operating parameters of the cooling system by adjusting the cooling capacity distribution ratio between the air conditioning device and battery temperature adjustment device. Based on the scheduled travel plan and battery temperature predictions, the control device optimizes the cooling capacity allocation to achieve effective battery cooling while maintaining adequate air conditioning performance.

Inventive Principle:

Principle #35Parameter changes

3Productivity

If the battery is cooled to the target temperature before charging, then output restriction can be avoided, but the cooling capacity may be insufficient depending on usage conditions

Engineering Contradiction:

Improvebattery outputVSAvoidcooling capacity

Core Design Contradiction:

ProductivityVSPower

Solution Approach 1:

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The control device continuously monitors the battery temperature and compares it with the target temperature range, adjusting the cooling capacity distribution in real-time based on feedback from temperature sensors and predictions from the scheduled travel plan analysis.

Inventive Principle:

Principle #23Feedback

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 solution prevents battery output restrictions and maintains convenience by anticipating and managing temperature adjustments, ensuring the battery remains within a safe temperature range during charging and traveling.

Implementation Method 1

a battery temperature adjustment device configured to adjust a temperature of the battery

Methodology Applied

Scientific EffectHeat exchange: Heat Exchanger

Data Source

PatentUS20230253644A1Battery temperature adjustment system

Publication Date: 2023.08.10 HONDA MOTOR CO LTD

AI summary

A battery temperature adjustment system includes: a battery; a battery temperature adjustment device; and a control device configured to control the battery and the battery temperature adjustment device. The control device includes: a scheduled travel plan acquisition unit; a normal battery cooling control planning unit configured to derive a predicted battery temperature and a temperature adjustment capability of the battery temperature adjustment device in a normal battery cooling control: and a temperature adjustment plan creation unit configured to: create a temperature adjustment plan for the battery; derive a battery temperature adjustment amount required for making the temperature of the battery equal to or lower than a predetermined temperature when an occurrence of overshoot, in which the predicted battery temperature exceeds the predetermined temperature, is predicted; and distribute the battery temperature adjustment amount based on the temperature adjustment capability of the battery temperature adjustment device before the overshoot occurs.