Battery Voltage Reporting Under Limited Power and Ambient Conditions

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Solution Overview

Problem

Existing battery management systems face challenges in collecting voltage information of batteries for an extended period with limited power, particularly in the battery distribution process where commercial power is often unavailable.

Innovation Solution

A battery management apparatus and method that adjust the communication cycle and/or voltage measurement cycle based on the available power limit, considering ambient temperature and humidity, to optimize power usage and extend the period of voltage information collection.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If the communication unit operates continuously to output voltage information, then the voltage information can be collected frequently, but the power consumption increases and the operation period decreases

Engineering Contradiction:

Improvevoltage information collection frequencyVSAvoidoperation period

Core Design Contradiction:

ProductivityVSDuration of action of moving object

Solution Approach 1:

The communication unit operates periodically rather than continuously, with the control unit determining operation timing based on available power limits. The system alternates between communication operations and idle states, allowing voltage information to be collected at regular intervals while conserving power to extend the overall operation period.

Inventive Principle:

Principle #19Periodic action

Solution Approach 2:

The communication cycle is dynamically adjusted based on the available power limit, which varies with environmental conditions (temperature and humidity). When power availability is high, the communication frequency increases; when power availability is low, the frequency decreases, optimizing the balance between information collection and power consumption.

Inventive Principle:

Principle #15Dynamics

2Measurement precision

If the communication cycle is shortened to collect voltage information more frequently, then the diagnostic accuracy improves, but the power consumption increases

Engineering Contradiction:

Improvediagnostic accuracyVSAvoidpower consumption

Core Design Contradiction:

Measurement precisionVSUse of energy by moving object

Solution Approach 1:

The control unit continuously monitors the available power limit and uses this feedback to adjust the communication cycle. When the available power is sufficient, the system increases communication frequency to improve diagnostic accuracy. When power is limited, the system reduces frequency to conserve energy, maintaining an optimal balance between diagnostic quality and power consumption.

Inventive Principle:

Principle #23Feedback

Solution Approach 2:

The system changes the communication cycle parameter dynamically based on environmental conditions and power availability. By adjusting this key parameter, the system can adapt between frequent communication (high diagnostic accuracy) and infrequent communication (low power consumption) modes to match current operational constraints.

Inventive Principle:

Principle #35Parameter changes

3Speed

If the communication unit operates at high frequency to provide real-time battery status, then the responsiveness improves, but the limited power is depleted faster

Engineering Contradiction:

ImproveresponsivenessVSAvoidpower depletion rate

Core Design Contradiction:

SpeedVSLoss of energy

Solution Approach 1:

The communication unit performs periodic status reports rather than continuous real-time transmission. The control unit schedules communication operations at intervals determined by the available power limit, providing periodic updates on battery voltage and status while preventing rapid power depletion that would occur with continuous high-frequency communication.

Inventive Principle:

Principle #19Periodic action

4Reliability

If the voltage measurement cycle is reduced to monitor battery voltage more closely, then the safety monitoring improves, but the power consumption of the measurement and communication system increases

Engineering Contradiction:

Improvesafety monitoringVSAvoidpower consumption

Core Design Contradiction:

ReliabilityVSUse of energy by moving object

Solution Approach 1:

The voltage measurement and communication operations are performed periodically rather than continuously. The control unit schedules measurement and communication cycles based on available power, providing regular safety monitoring checks while avoiding the excessive power consumption that would result from continuous monitoring and transmission.

Inventive Principle:

Principle #19Periodic action

Data Source

PatentUS12292479B2Battery management apparatus and method

Publication Date: 2025.05.06 LG ENERGY SOLUTION LTD

AI summary

Discussed is a battery management apparatus that may include a voltage measuring unit configured to measure a voltage of a battery; a communication unit configured to output voltage information for the voltage measured by the voltage measuring unit; a power unit configured to provide an operation power to the communication unit; an environment information measuring unit configured to measure environment information including at least one of ambient temperature and humidity of the power unit; and a control unit configured to receive the measured environment information from the environment information measuring unit, judge whether the power unit is operable based on at least one of the received environment information, a capacity of the power unit, and a consumed current and a communication time consumed for the communication unit to output the voltage information, and control the communication unit according to a judgment result about whether the power unit is operable.