Energy Storage Converter Cabinet With Sealed Liquid Cooling
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Solution Overview
Problem
Existing energy storage converters face challenges in effectively dissipating heat and protecting electronic components due to the limitations of air-cooling methods, which cannot adequately manage the increasing heat generated by enhanced power density.
Innovation Solution
A liquid-cooling heat exchanger and independent ventilation cavities are integrated into the cabinet design, combining direct ventilation ducts and electronic cavities for dual heat dissipation, along with a cooling fin and fans to manage airflow, ensuring efficient heat transfer and protection from pollution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If air-cooling is used for heat dissipation, then the structure is simple, but the heat dissipation effectiveness is insufficient and electronic components cannot be adequately protected
Solution Approach 1:
The cabinet is divided into three independent cavities: electronic cavity for housing sensitive components, end chamber for heat dissipation, and direct ventilation cavity for airflow passage. This segmentation allows separate optimization of protection and heat dissipation functions, resolving the contradiction between structural simplicity and heat dissipation effectiveness.
Solution Approach 2:
A liquid-cooling heat exchanger is introduced as an intermediary between the electronic cavity and the external environment. The heat exchanger efficiently transfers heat from electronic components to the cooling liquid, which then carries heat to the end chamber for dissipation, significantly improving heat dissipation effectiveness while maintaining component protection.
2Device complexity
If air-cooling is used, then the system is simple, but it cannot effectively protect electronic components from pollution while dissipating heat
Solution Approach 1:
The cabinet body is segmented into independent cavities with sealed electronic cavity that isolates electronic components from the external environment. The direct ventilation cavity handles all external air exchange, creating a pollution barrier that protects components while maintaining system functionality.
Solution Approach 2:
The liquid-cooling heat exchanger acts as an intermediary that enables heat dissipation without requiring direct air contact with electronic components. Heat is transferred through the heat exchanger walls to the cooling liquid, eliminating the need for air circulation around sensitive components and thus preventing pollution.
3Productivity
If power density is increased, then the energy storage capacity improves, but heat generation increases beyond what air-cooling can manage
Solution Approach 1:
The patent transitions from air-cooling to liquid-cooling by introducing a liquid-cooling heat exchanger and cooling liquid circulation system. The liquid cooling system has superior heat capacity and thermal conductivity, enabling effective heat dissipation for high-power-density energy storage batteries, thus supporting increased energy storage capacity without thermal runaway risks.
Solution Approach 2:
The heat dissipation parameter is changed from air-based convection to liquid-based convection and conduction. The cooling liquid's higher specific heat capacity and thermal conductivity provide enhanced heat transfer coefficients, allowing the system to dissipate the increased heat generation from high-power-density batteries.
4Loss of energy
If direct ventilation is provided for heat dissipation, then heat removal is effective, but electronic components are exposed to pollution
Solution Approach 1:
The ventilation system is segmented into separate pathways: the direct ventilation cavity provides effective heat removal through dedicated air inlets and outlets, while the electronic cavity remains sealed and isolated. This segmentation allows aggressive ventilation for heat dissipation without exposing electronic components to polluted external air.
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 dual heat dissipation method effectively reduces component temperatures, enhances protection, and reduces noise and maintenance costs, while maintaining a stable and pollution-free environment for electronic components.
Implementation Method 1
the liquid-cooling heat exchanger serves as first heat dissipation
Implementation Method 2
The liquid-cooling heat exchanger is connected to the cooling fin through a first pipeline, and the first pipeline contains a cooling liquid
Implementation Method 3
the heat dissipation fan is configured to guide an external airflow to flow into the end chamber and flow out of the cabinet body after flowing through the cooling fin
Implementation Method 4
The heat dissipation fan is configured to guide an external airflow to flow into the end chamber and flow out of the cabinet body after flowing through the cooling fin
Implementation Method 5
at least part of a direct ventilation duct is formed in the direct ventilation cavity, and two ends of the direct ventilation duct are in communication with outside of the cabinet body
Data Source
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AI summary
The present disclosure discloses a cabinet, an energy storage converter, an energy storage system, and a photovoltaic power generation system. The cabinet includes a cabinet body, a liquid-cooling heat exchanger, a cooling fin, and a heat dissipation fan. An end chamber, a direct ventilation cavity, and an electronic cavity are formed in the cabinet body. The electronic cavity is a closed cavity. Part of a direct ventilation duct is formed in the direct ventilation cavity. Two ends of the direct ventilation duct are in communication with an outside world. The liquid-cooling heat exchanger is disposed in the electronic cavity. The cooling fin is disposed in the end chamber. The liquid-cooling heat exchanger is connected to the cooling fin through a first pipeline, and the first pipeline contains a cooling liquid. The heat dissipation fan is configured to guide an external airflow to flow into the end chamber, flow through the cooling fin, and flow out of the cabinet body. With the cabinet according to the present disclosure, heat dissipation is performed for the direct ventilation cavity and the electronic cavity through the liquid-cooling heat exchanger. The direct ventilation duct is used to strengthen heat dissipation of the cabinet. The closed electronic cavity is provided, which takes into account the heat dissipation effect when a protection effect of the cabinet is improved.