Battery Temperature Control with State-Based Cooling Thresholds
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Solution Overview
Problem
Conventional temperature control systems for energy storage systems consume excessive power, running continuously and affecting overall power generation, as they maintain a fixed optimal temperature range without considering the energy storage battery's state (charging-and-discharging or static).
Innovation Solution
The method sets different target temperature ranges based on whether the energy storage battery is in a charging-and-discharging state or a static state, allowing a wider temperature range in the static state, thereby reducing the frequency of air-conditioning changes and power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the temperature control system runs continuously to maintain optimal temperature, then the energy storage battery operates within stable temperature range, but the power consumption of the temperature control system increases significantly
Solution Approach 1:
The patent applies dynamics by making the temperature control strategy adaptive rather than static. The system dynamically adjusts the target temperature range and control intensity based on the battery's state of charge (charging, discharging, or idle). When the battery is charging or discharging, the system maintains a narrower temperature range with more active control. When idle, it expands the acceptable temperature range and reduces control activity, thereby reducing power consumption while ensuring temperature stability during critical operations.
Solution Approach 2:
The patent changes the temperature control parameters (target temperature range, control threshold) based on the battery's operational state. Instead of using fixed temperature thresholds, the system adjusts these parameters dynamically: using stricter thresholds during charging/discharging modes and more relaxed thresholds during idle periods. This parameter adaptation resolves the contradiction by allowing higher power consumption only when necessary for battery performance.
2Reliability
If the air conditioner operates frequently to maintain optimal temperature, then the battery temperature remains stable, but the overall power generation of the energy storage system decreases
Solution Approach 1:
The system dynamically adjusts air conditioner operation based on battery state. During charging/discharging operations, the air conditioner operates more frequently to maintain optimal temperature for maximum power generation. During idle periods, the system reduces air conditioner operation by expanding the acceptable temperature range, thereby minimizing power consumption and maximizing overall power generation without compromising battery safety.
Solution Approach 2:
The patent implements periodic control action by adjusting air conditioner operation rhythmically based on battery operational cycles. Instead of continuous operation, the system activates the air conditioner periodically during charging/discharging phases and reduces operation during idle phases. This periodic action pattern aligns temperature control intensity with power generation needs, resolving the contradiction between temperature stability and power generation efficiency.
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 significantly reduces power consumption of the temperature control system, increasing the overall power generation of the energy storage system by minimizing unnecessary air-conditioning operations.
Implementation Method 1
controlling the air conditioner to perform cooling in a case that the real-time temperature is higher than the sixth threshold T6
Implementation Method 2
controlling the air conditioner to perform heating in a case that the real-time temperature is lower than the fifth threshold T5
Data Source
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AI summary
A temperature control method for an energy storage system and an energy management system are provided. The method comprises: obtaining a real-time temperature of an energy storage battery; determining whether the energy storage battery is in a charging and discharging state currently; if no, controlling the real-time temperature of the energy storage battery within a first preset range; and if yes, controlling the real-time temperature of the energy storage battery within a second preset range, where the first preset range is wider than the second preset range. In the present application, the number of air-conditioning changes is significantly reduced in a whole day, and the power consumption of the temperature control system is reduced, thereby increasing the power generation of the entire energy storage system.