Energy storage system
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Solution Overview
Problem
Existing energy storage systems face inefficiencies in heat exchange for outdoor heat exchangers, particularly in extreme temperatures, leading to potential failures or shutdowns of air conditioners.
Innovation Solution
The energy storage system incorporates an air conditioner management unit that sprays a fire extinguishing agent onto the outer surface of the outside heat exchanger, enhancing heat exchange efficiency through enthalpy of vaporization or heat exchange, and includes a spiral pipe with ribs to optimize heat transfer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the outside heat exchanger size is increased to improve cooling efficiency in high temperatures, then heat exchange efficiency is improved, but device complexity and cost increase
Solution Approach 1:
The patent changes the thermal parameters of the heat exchanger by spraying fire extinguishing agent (which has different thermal properties than air) onto the outer surface. This allows the existing heat exchanger size to achieve higher cooling efficiency through parameter modification rather than physical enlargement.
Solution Approach 2:
The fire extinguishing agent serves as an intermediary substance between the heat exchanger and the external environment. It mediates the heat transfer process by absorbing heat through vaporization, thereby improving cooling efficiency without requiring a larger heat exchanger structure.
2Device complexity
If a small outside heat exchanger is used, then device complexity is reduced, but heat exchange efficiency decreases in high temperature environments
Solution Approach 1:
The patent modifies the thermal parameters of the heat transfer medium by using fire extinguishing agent instead of air. This parameter change enables a small heat exchanger to achieve high heat exchange efficiency through the superior thermal properties of the sprayed agent.
Solution Approach 2:
The fire extinguishing agent is sprayed locally onto the outer surface of the heat exchanger where heat transfer occurs. This localized application of a substance with superior heat transfer properties enhances the efficiency of the small heat exchanger surface area.
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 configuration increases the heat exchange efficiency of the outside heat exchanger, allows for the use of a smaller heat exchanger, and effectively removes frost in winter without stopping container heating, thus preventing overcooling.
Implementation Method 1
sprays the fire extinguishing agent in the fire extinguishing agent tank onto an outer surface of the outside heat exchanger, thereby increasing the heat exchange efficiency of the outside heat exchanger using the enthalpy of vaporization
Implementation Method 2
an outside heat exchanger having a spiral pipe configured to allow the heat exchanger medium to move along an internal space of the outside heat exchanger and having a rib extending linearly along the spiral pipe outwardly from an outer surface of the spiral pipe
Data Source
AI summary
An energy storage system includes at least one battery rack including at least two battery modules, a container in which the battery rack is received, an air conditioner including an outside heat exchanger configured to cool a heat exchanger medium having a temperature rise in the container, and a circulation path configured to allow the heat exchanger medium to circulate between the container and the outside heat exchanger, a fire extinguishing unit including a fire extinguishing agent tank configured to detect a temperature of the at least one battery module that is equal to or higher than a predetermined temperature or smoke that is generated in the at least one battery module and feed the fire extinguishing agent to the battery module, and an air conditioner management unit configured to spray the fire extinguishing agent in the fire extinguishing agent tank onto an outer surface of the outside heat exchanger.