Battery Temperature Control for Industrial Vehicles
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Solution Overview
Problem
Industrial vehicle batteries are sensitive to temperature, leading to reduced lifespan and potential safety hazards such as explosion or ignition due to excessive heat generation during charging and discharging, which existing technologies fail to effectively manage.
Innovation Solution
An apparatus and method that include a battery temperature sensor unit, a monitoring unit, a vehicle control unit, and a fan control unit to measure and manage battery temperature by restricting motor operation and activating cooling fans when temperatures exceed predetermined thresholds, thereby preventing overheating.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If the battery operates during charging and discharging, then power is generated and delivered, but heat is generated causing temperature rise that shortens battery life and creates safety hazards
Solution Approach 1:
The patent converts the harmful heat generated during battery operation into a useful signal for control. The temperature rise, which normally shortens battery life and creates safety hazards, is detected by temperature sensors and used to trigger fan activation and motor RPM restriction, thereby preventing overheating while maintaining normal operation within safe temperature ranges
Solution Approach 2:
The patent dynamically changes operational parameters based on temperature conditions. When temperature exceeds thresholds, the system restricts motor RPM and activates cooling fans, effectively changing the operating parameters to prevent dangerous temperature rise while maintaining power delivery within safe limits
2Reliability
If cooling fans are activated to reduce battery temperature, then battery life is extended and safety is improved, but energy consumption increases
Solution Approach 1:
The patent uses periodic action by activating cooling fans only when temperature thresholds are exceeded and stopping them when temperatures return to safe ranges. The system monitors temperature continuously and triggers fan operation in periodic cycles based on actual thermal conditions, rather than running fans continuously, thereby extending battery life while minimizing unnecessary energy consumption
Solution Approach 2:
The patent implements feedback control where temperature sensors continuously monitor battery temperature and provide feedback to the control unit. Based on this feedback, the system activates or deactivates cooling fans and restricts or allows motor operation, creating a closed-loop control system that maintains battery reliability while optimizing energy consumption by acting only when necessary
3Temperature
If motor RPM is restricted to prevent battery overheating, then battery temperature is controlled, but vehicle productivity decreases
Solution Approach 1:
The patent applies dynamics by making motor RPM restrictions conditional and variable rather than fixed. The system dynamically adjusts motor RPM limits based on real-time temperature conditions, allowing full RPM when temperatures are safe and imposing restrictions only when temperatures approach dangerous levels. This dynamic approach maintains battery temperature control while maximizing productivity during safe operating conditions
4Measurement precision
If multiple temperature sensors are deployed to monitor different battery cells, then temperature measurement precision is improved, but device complexity increases
Solution Approach 1:
The patent applies segmentation by dividing the battery pack into multiple monitoring zones with individual temperature sensors placed on different battery cells. This segmentation allows precise temperature measurement of specific cells that may be running hotter than others, enabling targeted cooling control and improving overall temperature management precision without requiring complex centralized sensing
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 effectively prevents battery temperature from rising excessively, minimizing performance degradation and safety risks, and extending the lifespan of industrial vehicle batteries.
Implementation Method 1
a fan control unit for controlling driving of a fan that cools the battery pack based on the temperature information
Implementation Method 2
a battery temperature sensor unit for measuring a temperature of a battery pack of an industrial vehicle
Data Source
AI summary
An apparatus for controlling vehicle motors based on a battery temperature includes: a battery temperature sensor unit for measuring a temperature of a battery pack of an industrial vehicle; a battery monitoring unit for monitoring a measured value of the temperature sensor unit, and for transmitting temperature information when the temperature of the battery pack is out of a reference value that is predetermined; a vehicle control unit for restricting driving of a motor that receives a power from the battery pack based on the temperature information; and a fan control unit for controlling driving of a fan that cools the battery pack based on the temperature information.