Containerized Immersion Liquid-Cooled Energy Storage System: Buyer’s Guide

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August 25, 2026

On August 25, 2026

Large-scale battery energy storage projects must manage more than energy capacity. They also need to coordinate charge and discharge power, battery temperature, power conversion, grid connection, system control, protection, monitoring, fire safety, transport, installation, and future expansion.

The DHDL Containerized Immersion Liquid-Cooled Energy Storage Systemintegrates battery modules, BMS, EMS, PCS, immersion liquid cooling, safety protection, and intelligent monitoring within a containerized structure.

Unlike a conventional air-cooled cabinet, this system places battery cells directly in an insulating coolant. The circulating coolant removes heat from the cells and supports faster, more uniform thermal management.

Therefore, DHDL positions the system for large-scale independent storage stations, renewable-energy integration, utility applications, commercial and industrial storage, grid peak shaving and frequency regulation, microgrids, backup power, and solar-storage-charging projects.

However, the product page does not publish one fixed MWh capacity, MW power, battery chemistry, container dimension, efficiency, operating-temperature range, or service-life value. DHDL configures these items according to the actual project.

DHDL containerized immersion liquid-cooled energy storage system for utility-scale, renewable-energy, commercial, industrial, microgrid, and backup-power projects.

Table of Contents

What Is a Containerized Immersion Liquid-Cooled Energy Storage System?

A containerized immersion liquid-cooled energy storage system combines battery storage, power conversion, control, cooling, protection, and monitoring equipment within a transportable containerized structure.

DHDL lists the following integrated systems:

Battery modules
Battery management system, or BMS
Energy management system, or EMS
Power conversion system, or PCS
Immersion liquid-cooling system
Electrical and system safety protection
Fire-protection system
Intelligent monitoring system

The battery cells sit directly in an insulating coolant. Consequently, the cooling medium surrounds a much larger part of the cell surface than an indirect cooling arrangement.

The liquid-circulation and heat-exchange system then removes heat from the coolant. According to DHDL, this design supports fast and uniform heat dissipation, improves temperature consistency, and reduces overheating risk.

Nevertheless, “containerized” does not mean that the product automatically includes every grid-connection component. Buyers should confirm whether the proposed scope includes transformers, medium-voltage switchgear, external cables, auxiliary power, site controllers, civil works, installation, and commissioning.

How Does Immersion Liquid Cooling Work?

Direct Cell-to-Coolant Contact

In the DHDL system, insulating coolant directly surrounds the battery cells.

As the cells generate heat, the coolant absorbs it. The cooling system then circulates the liquid through the heat-exchange arrangement.

This direct thermal interface can support more uniform cooling than a system that relies only on cabinet air movement. However, DHDL should confirm the final coolant, circulation design, heat exchanger, temperature-control strategy, and monitoring arrangement for each project.

Temperature Consistency

Uneven cell temperatures can create uneven operating conditions across a battery system.

According to the product page, immersion cooling helps reduce cell-temperature differences and improve temperature consistency. Therefore, the system can support stable operation under high-load charge and discharge conditions.

Still, the website does not publish a guaranteed maximum temperature difference. Buyers with a numerical requirement should include it in the technical specification and request confirmation.

Heat Exchange

The system uses a high-efficiency heat-exchange design to remove heat from the circulating coolant.

The final heat-rejection arrangement depends on:

System capacity
Charge and discharge power
Duty cycle
Battery losses
Ambient temperature
Installation altitude
Solar exposure
Container layout
Site cooling conditions
Required operating limits

Consequently, buyers should provide the expected operating profile rather than only the nominal MWh capacity.

Coolant Management

The product FAQ identifies the cooling medium as an insulating coolant.

However, the product page does not publish its chemical type, dielectric properties, flash point, environmental characteristics, compatibility, replacement interval, or maintenance procedure.

Therefore, buyers should request:

Coolant technical datasheet
Electrical-insulation properties
Material-compatibility information
Operating-temperature range
Fire and safety information
Environmental information
Filling and replacement procedure
Leakage-detection strategy
Storage and transport requirements
Maintenance interval
End-of-life handling instructions

Published Product Specifications

DHDL publishes the following general specification framework.

Item	Published product information
Product type	Containerized Immersion Liquid-Cooled Energy Storage System
System structure	Containerized design for transportation, installation, deployment, and project expansion
Cooling method	Battery cells directly immersed in coolant for fast and uniform heat dissipation
Thermal management	Heat-exchange design intended to improve battery-temperature consistency and reduce overheating risk
Main functions	Large-scale storage, charge and discharge control, thermal management, safety protection, energy management, and monitoring
Integrated systems	Battery system, immersion cooling, BMS, PCS, EMS, fire protection, and intelligent monitoring
Applications	Utility-scale storage, C&I storage, renewable-energy integration, microgrids, and backup power
Capacity management	Modular system design supports project-specific expansion
Customization	Capacity, battery configuration, cooling design, container layout, grid mode, communication protocol, and safety requirements
Additional FAQ customization	Output power, PCS brand, grid-connection voltage, container size, and overall system solution

These specifications define the available system scope. However, the approved project datasheet, equipment schedule, interface matrix, single-line diagram, general arrangement, and test plan should define the final contractual configuration.

Why Consider Immersion Cooling for a Large-Scale BESS?

More Direct Heat Removal

The coolant surrounds the battery cells directly. Therefore, the system can transfer heat through a more direct interface than air cooling.

This characteristic can help projects with:

High-capacity battery systems
High charge or discharge rates
Demanding thermal loads
Tight temperature-consistency requirements
Large-scale modular deployment
Significant ambient-temperature challenges

Nevertheless, DHDL must size the complete cooling system for the actual operating conditions.

Improved Temperature Uniformity

DHDL identifies smaller cell-temperature differences as an advantage of immersion cooling.

More uniform thermal conditions can help reduce temperature imbalance across the battery system. However, the website does not publish configuration-specific measurements or test conditions.

Consequently, buyers should request numerical temperature-uniformity data if it forms part of the tender evaluation.

Lower Overheating Risk

The product page states that the cooling and heat-exchange design helps reduce overheating risk.

This is a measured risk-reduction statement rather than a claim that thermal events cannot occur. Battery safety still depends on:

Cell selection
Battery integration
BMS logic
Temperature monitoring
Electrical protection
Coolant properties
Fire protection
Container separation
Emergency shutdown
Installation
Operation and maintenance

Therefore, buyers should assess the complete safety architecture.

Modular Capacity Expansion

The containerized and modular structure supports project expansion.

As a result, buyers can plan multiple system blocks or phased capacity growth. Nevertheless, expansion requires advance provision for:

Site area
Foundations
Grid capacity
Transformers
Switchgear
Cable routes
EMS addresses
Protection coordination
Communication bandwidth
Fire separation
Access roads
Future auxiliary loads

Modular hardware only supports expansion effectively when the original project design reserves the necessary infrastructure.

Transportable Containerized Structure

The containerized structure can simplify transportation and deployment compared with a fully site-built battery building.

However, the buyer must still review:

Container dimensions
Shipping weight
Transport route
Port and customs restrictions
Road width
Bridge limits
Crane capacity
Lifting points
Site turning radius
Foundation preparation
Delivery sequence

The product page does not publish one universal container size or weight. Therefore, DHDL should confirm logistics after establishing the system configuration.

Where Can Buyers Use This System?

Independent Energy Storage Stations

DHDL lists large-scale independent energy storage stations as an application.

These projects may require multiple containerized units, centralized control, grid-connected PCS equipment, transformers, switchgear, auxiliary systems, monitoring, fire protection, and plant-level EMS integration.

Consequently, buyers should define both the container-level and station-level scope.

Utility-Scale Energy Storage

Utilities may use battery storage to support grid operations according to the approved project strategy.

The product page lists peak shaving and frequency regulation among its applications. However, DHDL must configure the PCS, EMS, communication, response logic, and grid interface for the intended service.

Solar and Wind Energy Integration

Renewable-energy generation can vary with weather conditions. Therefore, a storage project may charge or discharge according to the generation profile, grid requirements, and operating objectives.

Buyers should provide:

Solar or wind capacity
Generation profile
Curtailment information
Grid export limit
Required storage duration
PCS power
Point-of-connection voltage
Operating strategy
Dispatch requirements
Expansion plan

Commercial and Industrial Storage

DHDL also lists commercial and industrial energy storage as an application.

A large industrial site may need storage for peak management, renewable-energy integration, backup support, or a microgrid. Nevertheless, a containerized immersion-cooled solution may exceed the needs of a smaller facility.

Therefore, buyers should compare it with a more compact All-in-One Air-Cooled Energy Storage Cabinet before selecting the system architecture.

Mcrogrids

A microgrid coordinates generation, storage, loads, and the utility interface.

The battery system can support the storage component. However, a complete microgrid may also require generators, PV inverters, transformers, switchgear, protection, controllers, communication, and load-management equipment.

Backup-Power Projects

The system can support backup-power applications when DHDL configures the power, capacity, control, and grid mode appropriately.

However, buyers should define:

Critical loads
Required backup duration
Maximum load
Starting currents
Acceptable transfer time
Grid-loss response
Black-start requirement
Generator coordination
Required reserve state of charge
Redundancy

The product page does not publish a guaranteed transfer time or black-start function for every configuration.

Solar-Storage-Charging Projects

A solar-storage-charging project combines PV generation, battery storage, and EV charging.

For example, the system may coordinate with DHDL’s DC EV Charging Pile in a high-power charging project.

Nevertheless, the project must balance PV generation, grid capacity, battery power, storage duration, vehicle demand, charger utilization, and EMS control.

Immersion Liquid Cooling vs. Air Cooling

DHDL offers both the target containerized system and an air-cooled integrated cabinet.

Selection factor	Containerized immersion liquid-cooled system	All-in-one air-cooled cabinet
Published primary scale	Large-scale energy storage	Commercial and industrial energy storage
Physical structure	Containerized system	Compact integrated cabinet
Cooling method	Battery cells directly immersed in insulating coolant	Air-cooling thermal management
Thermal emphasis	Fast, uniform heat dissipation and improved cell-temperature consistency	Stable cabinet temperature control and convenient maintenance
Main integrated equipment	Battery modules, BMS, EMS, PCS, immersion cooling, protection, fire system, and monitoring	Battery modules, BMS, EMS, PCS, air cooling, electrical protection, fire system, and monitoring
Expansion approach	Modular containerized capacity expansion	Modular battery-capacity configuration
Published applications	Utility scale, C&I, renewable energy, microgrids, backup power	C&I, distributed energy, PV integration, backup power, and microgrids
Main buyer priority	Large capacity, high thermal load, uniform cooling, and containerized deployment	Compact C&I integration and simpler air-cooling architecture
Primary maintenance focus	Coolant, pumps, circulation, heat exchange, sealing, monitoring, and integrated equipment	Airflow, fans, filters where applicable, thermal paths, and integrated equipment
Final selection basis	MWh/MW demand, duty cycle, temperature requirements, scale, environment, and lifecycle strategy	kWh/kW demand, footprint, duty cycle, environment, maintenance, and cost

Immersion cooling offers a more direct cell-to-coolant heat-transfer path. Conversely, air cooling avoids a system in which cells sit directly in coolant.

Therefore, the project should compare scale, thermal load, efficiency targets, auxiliary power, maintenance expertise, coolant management, environment, cost, safety, and future expansion.

Immersion Cooling vs. Indirect Liquid Cooling

The category title uses “liquid-cooled,” while the specific DHDL product uses immersion liquid cooling. These terms should not be treated as interchangeable.

Cooling route	Cooling-medium relationship to cells	Main design distinction
Immersion liquid cooling	Insulating coolant directly surrounds the battery cells	Direct cell-to-coolant thermal interface
Indirect liquid cooling	Liquid typically flows through plates, pipes, or another heat-transfer structure	Coolant does not directly surround the cells
Air cooling	Air carries heat away from the battery equipment	No liquid-based battery cooling loop

The DHDL product page specifically confirms immersion cooling. Therefore, this article does not claim specifications for a separate cold-plate or indirect liquid-cooling product.

How Do BMS, EMS, and PCS Work Together?

BMS

The battery management system monitors and manages the battery system according to the approved architecture.

Buyers should confirm:

Cell and module monitoring
Temperature monitoring
State-of-charge calculation
State-of-health functions
Alarm thresholds
Shutdown logic
Balancing
Communication
Data recording
Interface with cooling and fire systems

PCS

The power conversion system manages electrical charging and discharging.

DHDL lists the PCS brand and output power as customizable. Therefore, buyers should provide:

Required MW power
Battery DC-voltage range
AC voltage
Frequency
Grid mode
Reactive-power requirements
Overload requirements
Harmonic limits
Grid-support functions
Transformer interface

EMS

The energy management system coordinates the operating strategy.

It may manage charging schedules, discharge commands, power limits, renewable-energy coordination, grid dispatch, peak shaving, or backup reserve according to the project.

However, the product page does not publish one universal EMS platform or protocol. Buyers should provide the required communication, dispatch, reporting, and third-party integration functions.

What Can DHDL Customize?

Energy and Power

DHDL can customize:

Energy-storage capacity
Output power
Battery configuration
PCS brand
Modular system arrangement

Capacity and power are different design inputs. Therefore, buyers should state both the required MWh and MW.

Cooling System

DHDL can customize:

Cooling requirements
Cooling-system design
Heat-exchange arrangement
Container thermal layout
Project-specific thermal controls

The buyer should provide the duty cycle, ambient conditions, altitude, and required temperature limits.

Grid Connection

DHDL can customize:

Grid-connection voltage
Grid-connected or project-specific operating mode
PCS configuration
Communication protocol
Energy-management interface
Protection requirements

Container and Site Configuration

DHDL can customize:

Container size
Container layout
Internal equipment arrangement
Site-specific installation configuration
Safety requirements
Environmental adaptation

Overall System Solution

The product FAQ states that DHDL can customize the overall system solution.

Nevertheless, the proposal should explicitly identify the scope of:

Battery system
PCS
EMS
BMS
Cooling
Fire protection
Monitoring
Transformer
Switchgear
External cables
Installation
Commissioning
Training
Spare parts
Warranty
Documentation

Critical Buyer Checks Before Ordering

Confirm MWh and MW Requirements

MWh defines energy capacity, while MW defines charge or discharge power.

Two projects can use the same MWh capacity but require different power, duration, cooling, PCS, transformer, and cable configurations.

Therefore, provide:

Required energy
Required power
Storage duration
Charge rate
Discharge rate
Daily cycles
Operating profile
Grid-service requirements

Confirm the Battery Configuration

Request written confirmation of:

Cell chemistry
Cell manufacturer
Cell capacity
Module and rack architecture
Nominal and operating voltage
Usable energy
Depth of discharge
Cycle-life basis
Degradation assumptions
Warranty conditions
Replacement strategy

The product page does not publish these details for one standard system.

Confirm the Thermal Design

Specify:

Maximum and minimum ambient temperature
Operating altitude
Solar exposure
Humidity
Required cell-temperature range
Maximum temperature difference
Coolant specification
Cooling redundancy
Auxiliary consumption
Leakage detection
Emergency cooling response

Confirm Fire and Safety Functions

The system includes safety protection and a fire-protection system. However, buyers should verify:

Detection devices
Alarm levels
Fire-suppression medium
Isolation logic
Emergency shutdown
Venting strategy
External fire-system interface
Container separation
Emergency access
Applicable fire standard
Local approval requirements

Confirm Grid-Connection Equipment

Determine whether the proposed scope includes:

PCS
Step-up transformer
Medium-voltage switchgear
Low-voltage distribution
Protection relays
Metering
Auxiliary transformer
Plant controller
SCADA connection
External cables
Grounding system

DHDL offers related transformer and distribution-cabinet products, but buyers should not assume that every item comes automatically with the storage container.

Confirm Logistics

Provide:

Destination
Transport route
Port
Road restrictions
Crane availability
Maximum shipping dimensions
Weight limits
Foundation plan
Delivery sequence
Customs requirements
Battery transport documents

Target-Market Considerations

DHDL’s target markets include Ukraine, Ethiopia, Vietnam, Thailand, Myanmar, Uzbekistan, Russia, and Nigeria. However, exact site and grid data must determine the configuration.

Target market	Information buyers should prioritize
Ukraine	Minimum temperature, heating requirements, grid connection, site security, fire rules, logistics, and documentation
Ethiopia	Altitude, ambient heat, dust, grid voltage, transport route, cooling derating, and site access
Vietnam	Humidity, rainfall, flooding, coastal corrosion where applicable, cooling conditions, grid code, and fire requirements
Thailand	High temperature, humidity, solar exposure, drainage, cooling load, grid requirements, and site access
Myanmar	Monsoon exposure, grid stability, communication availability, logistics, maintenance resources, and site security
Uzbekistan	Seasonal temperatures, dust and sand, altitude, transport restrictions, cooling demand, and grid requirements
Russia	Minimum temperature, snow, heating, grid standards, fire regulations, transport restrictions, and documentation
Nigeria	Ambient heat, humidity, rainfall, dust, grid availability, backup strategy, logistics, communication, and security

For example, a high-altitude project in Ethiopia needs a different thermal review from a low-altitude site. Meanwhile, projects in Vietnam or Thailand may place greater emphasis on humidity, rainfall, drainage, and high-temperature cooling performance.

Therefore, buyers should submit measured environmental values rather than only the destination country.

Documentation and Verification Requirements

Before order approval, buyers should request a project-specific document list.

Document or verification item	Purpose
System datasheet	Defines MWh, MW, voltage, cooling, and environmental ratings
Single-line diagram	Defines the electrical architecture
Equipment list	Clarifies included components and brands
Battery datasheet	Defines cell and battery performance
PCS datasheet	Defines power-conversion capability
Cooling-system datasheet	Defines coolant, circulation, heat exchange, and thermal limits
Container layout	Defines dimensions, equipment arrangement, and access
Communication matrix	Defines BMS, PCS, EMS, SCADA, and external interfaces
Protection philosophy	Defines alarms, trips, isolation, and coordination
Fire-safety documents	Defines detection, suppression, and emergency response
Test plan	Defines battery, PCS, cooling, control, protection, and integrated tests
Transport documents	Supports battery and container shipment
Installation manual	Supports foundation, lifting, cables, and commissioning
Warranty terms	Defines coverage, conditions, exclusions, and responsibilities

The product page contains a “Factory Test Items” table, but that table lists transformer-specific tests such as winding resistance, voltage ratio, vector group, and transformer-oil testing. These tests do not match the published scope of the target energy storage system.

Therefore, buyers should request a dedicated BESS factory-acceptance test plan rather than rely on that webpage table.

What Information Does DHDL Need for a Quotation?

RFQ information	Why it matters
Application scenario	Defines utility, renewable-energy, C&I, microgrid, backup, or charging use
Required capacity in MWh	Establishes storage energy
Required power in MW	Establishes charge and discharge power
Storage duration	Relates power to energy requirements
Operating mode	Defines charge, discharge, grid, backup, and dispatch logic
Grid-connection voltage	Establishes the electrical interface
Grid-code requirements	Defines control, protection, and compliance functions
Battery requirements	Supports chemistry, brand, voltage, and lifecycle selection
PCS requirements	Supports power-conversion configuration
Charge and discharge profile	Supports battery and cooling design
Installation environment	Supports thermal, container, and safety design
Site layout	Supports container quantity, access, and cable planning
Communication protocol	Defines EMS and SCADA integration
Safety requirements	Defines protection and fire-system scope
Expansion plan	Supports modular capacity planning
Applicable standards	Establishes the engineering and documentation basis
Project quantity	Supports system and commercial planning
Destination and schedule	Supports logistics, manufacturing, and delivery planning

If the project remains at the concept stage, send the target MWh, MW, storage duration, application, grid voltage, site location, and operating objective first. DHDL can then identify the remaining technical inputs.

Frequently Asked Questions

What makes this system different from a standard liquid-cooled BESS?

The DHDL product uses immersion liquid cooling. Its insulating coolant directly surrounds the battery cells. In contrast, an indirect liquid-cooling system normally transfers heat through cold plates or another physical interface.

Which systems does the container integrate?

The product page lists battery modules, BMS, EMS, PCS, immersion cooling, safety protection, fire protection, and intelligent monitoring.

Does DHDL publish a fixed MWh capacity?

No. DHDL customizes the capacity according to the project.

Can DHDL customize the output power?

Yes. The FAQ lists output power as customizable. Buyers should provide the required MW value and operating profile.

Can buyers specify the PCS brand?

The product FAQ states that PCS-brand customization is supported. Final availability and compatibility require confirmation.

Which applications suit the system?

DHDL lists independent storage stations, utility-scale storage, renewable-energy integration, C&I storage, peak shaving, frequency regulation, microgrids, backup power, and solar-storage-charging projects.

Does immersion cooling eliminate thermal risk?

No. The product page states that immersion cooling helps reduce overheating risk and improve temperature consistency. The complete battery, cooling, protection, monitoring, fire-safety, installation, and operating design still determines system risk.

Can the system expand later?

The modular containerized design supports project-specific capacity expansion. However, buyers must reserve grid, civil, cable, communication, safety, and site capacity.

What should buyers submit for a quotation?

DHDL requests the capacity in MWh, power in MW, application, grid voltage, operating mode, environment, and quantity. Buyers should also provide battery, cooling, communication, safety, standard, and expansion requirements.

Configure the System Around the Actual Duty Cycle

The DHDL Containerized Immersion Liquid-Cooled Energy Storage System combines battery modules, BMS, EMS, PCS, direct immersion cooling, safety protection, fire protection, and intelligent monitoring within a modular containerized platform.

Therefore, it can support large-scale independent storage, utility projects, renewable-energy integration, commercial and industrial applications, microgrids, backup power, and solar-storage-charging infrastructure.

However, the correct configuration depends on much more than MWh capacity. Buyers should confirm the MW power, storage duration, battery chemistry, duty cycle, cooling conditions, coolant, PCS, grid connection, fire protection, communication, environment, logistics, and expansion plan.

To request a project-specific solution, send your required MWh and MW, storage duration, application, grid voltage, charge and discharge profile, battery requirements, installation environment, communication protocol, safety requirements, project quantity, destination, and schedule through the DHDL contact page.