Battery Thermal Management via Segmented Water Cooling
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Solution Overview
Problem
Existing thermal management methods for energy storage batteries struggle to efficiently and safely manage temperature, leading to potential thermal runaway due to inadequate cooling capacity and uneven heat distribution, which can result in economic losses.
Innovation Solution
A thermal management method that collects real-time data from battery equipment and a water chiller, adjusting the operation modes of functional members such as the mechanical refrigeration system, water circulation system, and dry cooler to maintain optimal temperature ranges, and includes features like alarm prompts and fire-fighting valves to prevent thermal runaway.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If air-cooled forced-convection heat dissipation method is applied, then the thermal management system is simple, but the cooling efficiency is insufficient and dead zones are present
Solution Approach 1:
The thermal management system is segmented into multiple independent cooling channels with separate water flow paths for different battery regions. This allows independent optimization of cooling for each channel, eliminating dead zones and improving overall cooling efficiency while maintaining system simplicity through modular design
Solution Approach 2:
A water-cooled heat dissipation system is introduced as an intermediary between the battery and the environment, replacing direct air cooling. The coolant acts as a heat transfer medium that efficiently removes heat from battery surfaces and internal regions, significantly improving cooling effectiveness
2Temperature
If surface cooling is applied, then the cooling capacity is sufficient, but the internal temperature cannot be effectively reduced
Solution Approach 1:
Different cooling strategies are applied to different regions of the battery. The water cooling system is designed with specific flow paths that target internal heat-generating regions, while air cooling handles surface temperature management. This localized approach ensures both surface and internal temperatures are effectively controlled
Solution Approach 2:
The cooling approach transitions from two-dimensional surface cooling to three-dimensional heat management by introducing internal water cooling channels. This allows heat removal from the battery interior, not just the surface, effectively reducing internal temperatures and preventing thermal runaway
3Measurement precision
If real-time monitoring is implemented, then the thermal state is detected, but effective processing methods are lacking
Solution Approach 1:
A real-time feedback control system is implemented where temperature sensors continuously monitor battery thermal states and automatically adjust the water and air cooling system operations. When abnormal temperature rise is detected, the system responds by increasing coolant flow or activating additional cooling channels, providing both detection and effective processing
Solution Approach 2:
The system performs preliminary thermal management by continuously monitoring battery temperature and proactively adjusting cooling parameters before critical thermal conditions develop. This prevents thermal runaway by maintaining temperatures within safe operating ranges through advance cooling adjustments
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 method effectively reduces the probability of thermal runaway and improves thermal management efficiency, ensuring safer and more effective temperature control for battery equipment compared to traditional air-cooled forced-convection methods.
Implementation Method 1
An air-cooled forced-convection heat dissipation method is mainly applied by the existing energy storage battery thermal management method
Implementation Method 2
the water circulation system, a mechanical refrigeration system, a dry cooler and a second refrigeration system; the water circulation system is connected to the mechanical refrigeration system by a heat exchanger
Data Source
AI summary
A thermal management method is disclosed in the present application, which is used in a thermal management system. The thermal management system includes a battery equipment and a water chiller. The method includes: collecting a status date of the battery equipment and a real-time operation date of the water chiller; determining whether the status date is within a preset range; if the status date is not within the preset range, adjusting an operation mode of the water chiller according to the status date and the real-time operation date, so that the water chiller performs thermal management on the battery equipment according to the adjusted operation mode. The thermal management method can perform safer and more efficient thermal management control to the battery equipment. A thermal management device, a system and a computer-readable storage medium are further provided according to the present application.