ESS Battery Chiller Standby Control for Temperature Stability
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Solution Overview
Problem
Conventional systems for managing ESS battery temperature lack active cooling control based on charging and discharging environments, leading to reduced charging efficiency and increased power consumption.
Innovation Solution
A chiller operation system that communicates with a battery control unit to provide cooling control signals during charging and discharging, switching to a standby mode only when a cooling stop signal and preset temperature conditions are met, thereby reducing power consumption and actively managing temperature changes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If the chiller unit operates continuously to maintain target temperature, then temperature stability is improved, but power consumption increases
Solution Approach 1:
The chiller unit dynamically switches between operation mode and standby mode based on real-time temperature conditions and battery charging/discharging states. The control unit adjusts the chiller's operational status rather than maintaining continuous operation, optimizing the balance between temperature stability and power consumption.
Solution Approach 2:
The system changes the operational parameters of the chiller unit by switching between different modes (operation mode with active cooling and standby mode with reduced power consumption). This parameter change allows the system to adapt to varying thermal conditions and reduce energy usage when full cooling capacity is not needed.
2Use of energy by moving object
If the chiller unit switches to standby mode immediately when cooling stop signal is received, then power consumption is reduced, but temperature management reliability deteriorates
Solution Approach 1:
The control unit continuously monitors temperature conditions and battery charging/discharging states, using this feedback to determine when to switch the chiller to standby mode. This feedback mechanism ensures that the chiller remains operational when temperature management is still needed, maintaining reliability while reducing power consumption when appropriate.
Solution Approach 2:
The system performs preliminary assessment of temperature conditions and battery state before switching to standby mode. By evaluating whether the battery is in a safe temperature range and not actively charging/discharging, the system ensures that switching to standby will not compromise temperature management reliability.
3Productivity
If active cooling control is implemented based on charging and discharging environment, then charging efficiency is improved, but device complexity increases
Solution Approach 1:
The control unit performs multiple functions: it monitors battery charging/discharging states, tracks temperature conditions, determines appropriate cooling control signals, and manages chiller operation mode transitions. This multi-functionality allows active cooling control based on charging environment without requiring separate dedicated components for each function, thereby limiting the increase in device complexity.
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 manages ESS battery temperature by minimizing power usage and adapting to charging and discharging environments, ensuring efficient heat management through strategic standby mode operation.
Implementation Method 1
a chiller unit for cooling the ESS battery according to a cooling control signal during the charging and discharging of the ESS battery
Data Source
AI summary
A chiller operation system for an ESS battery and a method of operating the same. The system includes an ESS battery, a battery control unit for controlling charging and discharging of the ESS battery, a chiller unit for cooling the ESS battery according to a cooling control signal during the charging and discharging of the ESS battery, and a cooling control unit for performing heat management by providing the cooling control signal during the charging and discharging of the ESS battery by mutually communicating with the battery control unit but for controlling to switch to a standby mode of the chiller unit only when a cooling stop signal input of the battery control unit and a preset standby mode temperature condition are satisfied, wherein the cooling control unit sets the standby mode temperature condition using a chiller inlet temperature and a chiller outlet temperature.