Battery Cooling Air Pipe with Module Ports
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Solution Overview
Problem
Existing battery systems face temperature deviations between modules, leading to decreased depth of discharge (DOD) and state of health (SOH) due to inefficient cooling air distribution, which results in premature battery degradation and operational issues.
Innovation Solution
A system and method that utilize a pipe with module cooling ports to direct cooling air through each battery module, along with an opening/closing device controlled by a servo motor to optimize air inlet opening based on temperature, minimizing energy consumption and eliminating the need for fans.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If cooling air is discharged from a single location (floor or ceiling) to cool the battery system, then the air conditioning system can operate with simple structure, but temperature deviation between battery modules occurs due to uneven cooling air distribution
Solution Approach 1:
The patent divides the single cooling air discharge location into multiple discharge locations (floor and ceiling). The air conditioning system includes a floor discharge device with multiple nozzles and a ceiling discharge device with multiple nozzles, distributing cooling air to different battery modules from both floor and ceiling directions to eliminate temperature deviations
Solution Approach 2:
The patent applies different cooling strategies to different battery modules based on their local temperature conditions. Temperature sensors detect individual module temperatures, and the control unit adjusts cooling air discharge quantities for each module independently, providing localized cooling where needed most
2Temperature
If fans are installed in battery racks to compulsorily circulate cooling air, then temperature uniformity can be improved, but fan driving power consumption and installation costs increase
Solution Approach 1:
The patent eliminates the need for active fan circulation by designing a passive cooling system. Cooling air is discharged from floor and ceiling nozzles and naturally circulates through the battery modules, absorbing heat and rising to the ceiling where it is collected and recirculated, creating a self-sustaining cooling cycle without requiring additional energy-consuming fans
Solution Approach 2:
The patent replaces the mechanical fan-driven air circulation system with a natural convection-based system. Instead of using mechanical fans to force air movement, the system relies on natural buoyancy-driven convection currents where heated air rises and cool air sinks, creating automatic air circulation without mechanical components
3Loss of energy
If cooling air flows through all battery modules uniformly, then energy consumption is reduced, but temperature deviation occurs causing decreased depth of discharge (DOD) and state of health (SOH)
Solution Approach 1:
The patent implements dynamic control of cooling air distribution based on real-time temperature conditions. The control unit receives temperature data from sensors in each battery module and dynamically adjusts the discharge quantity of cooling air from floor and ceiling nozzles, optimizing both energy efficiency and temperature uniformity adaptively
Solution Approach 2:
The patent incorporates a feedback control mechanism where temperature sensors continuously monitor battery module temperatures and feed this information to the control unit. The control unit processes this feedback and adjusts cooling air discharge quantities accordingly, ensuring optimal cooling distribution that maintains both energy efficiency and battery health
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 approach minimizes coldness loss, maintains consistent battery temperatures, reduces energy consumption, and extends battery life by minimizing temperature deviations and optimizing air flow, thereby maximizing DOD and SOH.
Implementation Method 1
an air conditioning system which includes an outlet discharging cooling air for reducing a temperature of a plurality of battery modules
Implementation Method 2
a pipe which includes a plurality of module cooling ports connected to the outlet, forms a flow path of the cooling air, and corresponds to the plurality of battery modules, respectively, makes the cooling air discharged through the outlet pass through each battery module through each module cooling port
Data Source
AI summary
The system for controlling a flow of cooling air in a battery system for cooling the battery system includes: an air conditioning system which includes an outlet discharging cooling air for reducing a temperature of the plurality of battery modules, and an inlet taking in cooling air, of which a temperature is increased, after reducing the temperature of the plurality of battery modules; and a pipe which includes a plurality of module cooling ports connected to the outlet, forming a flow path of the cooling air, and corresponding to the plurality of battery modules, respectively, and makes the cooling air discharged through the outlet pass through each battery module through each module cooling port to cool the plurality of battery modules.