Battery Module Thermal Balancing With Zoned Fan Control
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Solution Overview
Problem
Large-scale lithium battery systems face challenges in thermal management due to uneven temperature distribution among battery modules, caused by varying production batches, impedance, placement, and environmental factors, leading to potential overheating or underheating, which can suspend battery operations and reduce service life.
Innovation Solution
A battery temperature control system comprising a cabinet, air conditioner, central control module, and fan assemblies, where temperature detecting modules monitor each battery module's temperature and send information to the central control module to activate cooling or heating sources and adjust fan speeds to achieve dynamic temperature balance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If a single air conditioner is used to cool the entire battery cabinet, then the overall ambient temperature can be maintained, but the temperature uniformity among individual battery modules deteriorates due to varying local heat generation and placement locations
Solution Approach 1:
The patent divides the battery cabinet into multiple temperature zones by placing multiple temperature detecting modules at different locations (front, rear, left, right, center) and implementing independent temperature control for each battery module. This segmentation allows each module to be monitored and controlled independently, resolving the temperature uniformity issue while maintaining overall ambient temperature control.
Solution Approach 2:
The patent applies local quality control by enabling independent temperature adjustment for each battery module based on its specific thermal conditions. The control system can selectively activate cooling or heating for individual modules or specific regions (front/rear/left/right) based on temperature detecting module readings, allowing localized thermal management that addresses the temperature uniformity problem while maintaining overall cabinet temperature stability.
2Stability of the object's composition
If individual battery modules are thermally managed independently with separate control systems, then temperature uniformity improves, but device complexity increases due to multiple detecting and control components
Solution Approach 1:
The patent merges multiple temperature detecting functions into a coordinated control system that manages all battery modules through a unified control logic. The control system integrates readings from multiple temperature detecting modules and implements centralized control decisions, reducing the complexity that would otherwise arise from completely independent control systems for each module.
Solution Approach 2:
The control system is designed with multi-functionality to handle various thermal management scenarios: it can control individual battery modules, groups of modules (front/rear/left/right regions), or the entire cabinet based on temperature conditions. This universal control approach simplifies the system architecture compared to having separate dedicated control systems for each module, while still achieving temperature uniformity through selective regional or individual module control.
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 system effectively maintains temperature uniformity among battery modules, prolongs battery service life, and enhances product reliability by dynamically adjusting the working temperature of each module.
Implementation Method 1
an air conditioner disposed in the cabinet for providing a cold source or a heat source
Implementation Method 2
an air conditioner disposed in the cabinet for providing a cold source or a heat source
Implementation Method 3
The corresponding fan assembly activates an operation mode to cool down or heat up the corresponding battery module
Data Source
AI summary
A battery temperature control system is disclosed. The battery temperature control system includes a cabinet, an air conditioner, a central control module and a plurality of battery modules. Each of the plurality of battery modules includes a plurality of batteries, a control unit, a fan assembly and a temperature detecting module, wherein the central control module sends a temperature controlling command to the air conditioner to activate a cold source or a heat source according to the ambient temperature, then the central control module compares and calculates a plurality of working temperature information transmitting from the plurality of battery modules, and sends a fan operation command to the each corresponding battery module, the corresponding fan assembly activates an working mode to cool or warm the temperature of the corresponding battery module, so as to adjust the working temperature of each battery module, and to achieve a dynamic temperature balance.