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Product Description
The 5kW Horizontal Plug-in Liquid Cooling Unit is a high-efficiency thermal management solution specifically designed for Battery Energy Storage Systems (BESS). It provides stable cooling performance to maintain optimal battery operating temperatures in energy storage containers and battery cabinets.
This liquid cooling unit for battery energy storage systems integrates refrigeration and coolant circulation into a compact module, ensuring reliable and energy-efficient heat dissipation for lithium battery systems.
◆Horizontal Plug-in Design
Easy installation in energy storage cabinets and containers.
◆Compact Integrated Structure
All cooling components in one module.
◆Intelligent Temperature Control
Automatic cooling and heating adjustment.
◆High-Efficiency Refrigeration
Stable cooling for battery energy storage systems.
◆RS485 Smart Communication
Supports monitoring, auto restart, and power memory.
Name | 5KW Liquid Cooling Unit |
Model | CY-ESSC5 |
Rated Voltage (V) | 220VAC±15﹪ |
Rated frequency(Hz) | 50/60 |
Cooling capacity (KW) | 5.0 |
Heating load(KW) | 2.5 |
Rated power(KW) W15/L35 | 2.6 |
Rated current(A)W15/L35 | 12 |
Refrigerant | R134a/1.8KG |
Circulating water volume | 40L/min |
Coolant | 50% ethylene glycol aqueous solution |
Working Ambient Temperature | -30℃ ~+55℃ |
| Water inlet and outlet method | Side inlet and outlet water |
| IP grade | IP20 |
| Weight | 80Kg |
| Overall dimensions(W*D*H) | 700mm*900mm*250mm |
| Operating voltage range: | 220VAC±15%,50/60HZ |
| Operating ambient temperature range: | -30℃ ~+45℃ |
| Operating relative humidity range: | 5%~+95% |
| Working altitude: | 0M~4000M ( Performance decreases by 3% for every 1000m increase at an altitude of 1000m~4000m) |
The liquid cooling unit consists of a refrigeration system and a coolant circulation system, and the system principle is shown in the figure:


Application
Large-scale lithium battery containers require stable thermal management to maintain safe and efficient operation.
Suitable for battery cabinets where high-density lithium battery modules generate significant heat.
Used in solar and wind power storage systems to ensure stable battery performance.
Provides reliable cooling for distributed energy storage and microgrid applications.
Options
Model | Voltage | Cooling capacity (KW) | Heating Load (W) | Weight (KG) | Overall dimensions (W*D*H) |
CY-ESSC5( Horizontal plug-in) | 220VAC±15﹪ | 5 | 2.5 | 80 | 700mm*900mm*250mm |
CY-ESSC5 (Vertical plug-in) | 220VAC±15﹪ | 5 | 2.0 | 90 | 1105mm*266mm*800mm |
CY-ESSC8 (Vertical plug-in) | 380VAC±15﹪ | 8 | 2.0 | 110 | 1200mm*266mm*1040mm |
CY-ESSC15 (Floor stand) | 380VAC±15﹪ | 15 | 10.0 | 260 | 980mm*617mm*2400mm |
CY-ESSC20 (Floor stand) | 380VAC±15﹪ | 20 | 10.0 | 400 | 980mm*617mm*2400mm |
| CY-ESSC40 (Floor stand) | 380VAC±15﹪ | 40 | 6.5 | 420 | 980mm*617mm*2400mm |
Advantages&Why?
Our liquid cooling units are specifically engineered for battery energy storage system cooling, ensuring stable temperature control.
The system uses variable frequency refrigeration technology to optimize cooling output and reduce energy consumption.
Liquid cooling technology provides:
high coolant flow
small temperature difference
This helps extend battery life and reduce degradation.
With RS485 communication and intelligent control, the cooling unit can be easily integrated into modern energy storage management systems.
The unit can operate in ambient temperatures ranging from -30°C to +55°C, making it suitable for outdoor energy storage applications.

Our engineering team can recommend the right model based on:
Cabinet size
Heat load
Installation method
Environment
Voltage requirements
Contact us for datasheets, drawings, pricing, or OEM/ODM solutions.
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