Battery Module Heating Control for Cold-Start Voltage Recovery

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Solution Overview

Problem

Battery temperature in cold environments is too low, leading to high internal resistance and insufficient voltage to operate electronic devices, with traditional methods of increasing temperature through heat loss being time-consuming.

Innovation Solution

A battery module comprising a battery unit, a heating unit, a detection unit, and a drive control unit that monitors voltage and current values to dynamically adjust heating to optimize battery temperature and reduce internal impedance.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Temperature

If the battery temperature is increased through heat generated from heat loss, then the internal resistance decreases and voltage increases, but the process is time-consuming

Engineering Contradiction:

Improvebattery temperatureVSAvoidheating time

Core Design Contradiction:

TemperatureVSLoss of time

Solution Approach 1:

The patent converts the harmful heat loss into a beneficial heating source by using the heating unit to generate heat that warms the battery unit. The detection unit monitors voltage and current to determine when heating is needed, and the drive control unit activates the heating unit to convert electrical energy into thermal energy, directly addressing the slow heating problem by providing an active heating mechanism rather than relying on passive heat loss.

Inventive Principle:

Principle #22Blessing in disguise (Convert harm into benefit)

2Power

If the battery temperature is low, then the internal resistance is high, but the voltage is insufficient to drive electronic devices

Engineering Contradiction:

ImprovevoltageVSAvoidoperational reliability

Core Design Contradiction:

PowerVSReliability

Solution Approach 1:

The detection unit continuously monitors the voltage and current values of the battery unit and provides feedback to the drive control unit. Based on this feedback, the drive control unit determines whether the battery unit needs heating and activates the heating unit accordingly. This closed-loop feedback system ensures that the battery temperature is maintained at an optimal level to provide sufficient voltage while ensuring operational reliability by preventing activation at temperatures that would result in insufficient power output.

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

The solution effectively and efficiently increases battery temperature, reducing internal resistance and ensuring sufficient voltage to operate electronic devices, particularly in cold environments, by dynamically adjusting heating based on impedance values.

Implementation Method 1

driving a heating unit to heat the battery unit according to the voltage value and the current value

Methodology Applied

Scientific EffectJoule heating: Joule Heating

Data Source

PatentUS20230420755A1Battery module, circuit board and battery power optimization method

Publication Date: 2023.12.28 QISDA CORP

AI summary

The present invention discloses a battery module, a circuit board and an battery power optimization method. The battery power optimization method includes: activating a battery unit to cause the battery unit to discharge; obtaining a voltage value and a current value of the battery unit; and driving a heating unit to heat the battery unit according to the voltage value and the current value.