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Renewable energy is the future, which makes it even more challenging to provide electricity whenever and wherever it is needed. Compared with traditional energy storage, battery energy storage systems (BESS) are based on a modular design, which is very suitable for backup reserve power.  It has the advantages of modular design for multimodal transportation, easy installation, flexibility, safety and reliability.  Suitable for use in remote areas or areas lacking electricity.
The bess make it possible to store the energy produced by photovoltaics, wind turbines, or CHP.  Due to its high cycle lifetime, the energy storage system containers are also used for peak-shaving, thereby reducing the electricity bill.
Containerized energy storage solutions provided by TLS can be configured to match the power and capacity requirements required by customer applications, meet the most demanding specifications, and be able to handle a wide range of adverse conditions.

​Taking the 1MW/1MWh battery energy storage system as an example, the system is generally composed of energy storage battery system, monitoring system, battery management unit, special fire protection system, special air conditioning system, power conversion system (PCS) and isolation transformer, and finally integrated in a container.
 
The battery system is mainly composed of battery cells in series and parallel: first, a dozen groups of battery cells are connected in series and parallel to form a battery pack, then the battery boxes are connected in series to form a battery string to increase the system voltage, and finally the batteries are connected in series and parallel to increase the system capacity, and are integrated in inside the battery container.
 
The monitoring system mainly enables the functions of external communication, network data monitoring and data acquisition, analysis and processing to be realized, ensuring accurate data monitoring, high voltage and current sampling accuracy, data synchronization rate and fast execution speed of remote control commands; the battery management unit has high precision The single-cell voltage detection and current detection functions ensure the voltage balance of the battery modules and avoid circulating currents between the battery modules, which will affect the system operation efficiency.
 
In order to ensure the safety of the system, the container is equipped with a special fire protection and air conditioning system. The fire protection system senses the fire through smoke sensors, temperature sensors, humidity sensors, emergency lights and other safety equipment, and automatically extinguishes the fire; the special air conditioning system is based on the external ambient temperature. The cooling and heating system of the air conditioner is controlled through the thermal management strategy to ensure that the temperature in the container is in a suitable range and prolong the service life of the battery.
 
The Power Conversion System（PCS） is an energy conversion unit that converts battery direct current to three-phase AC and can operate in grid-connected and off-grid modes. In grid-connected mode, the converter interacts with the power grid according to the power instruction from the upper dispatching. In off-grid mode, energy storage converters can provide voltage and frequency support for plant loads, and provide black start power for some renewable energy sources. The outlet of the energy storage converter is connected with the isolation transformer, so that the electrical insulation of the primary side and the secondary side is completely isolated, to ensure the safety of the container system to the greatest extent.

The ability to store and transfer the electricity generated by solar panels and wind turbines is the key to get energy for users when they need it—during outages, when the sun is not shining, or the wind is not turning the turbines blades. Battery energy storage system (BESS) container helps balance electricity generation and demand—creating a more flexible and reliable grid. 

Battery Energy Storage Systems (BESS) are one way to store energy so system operators can use their energy to soft transition from renewable power to grid power for uninterrupted supply. Ultimately, battery storage can save money, improve continuity and resilience, integrate generation sources, and reduce environmental impacts.  

If you have any inquiries on BESS containers, please download the check list and send it together with your inquiry.

Don’t hesitate to contact us for more information about the battery energy storage system container, We are eager to explain the possibilities for your applications. 

​Please download Energy Storage System (ESS) Containers brochure for reference. ​

Battery energy storage system containers

Taking the 1MW/1MWh energy storage system container as an example, the system generally consists of an energy storage battery system, a monitoring system, a battery management unit, a special fire protection system, a special air conditioner system, an energy storage converter and an isolation transformer, and is finally integrated in a 40-foot container. 
The battery system is mainly composed of cells in series and parallel: first, a dozen groups of cells are connected in series and parallel to form a battery box, then the battery boxes are connected in series to form a battery string and increase the system voltage, and finally the battery strings are connected in parallel to increase the system capacity, and Integrated installation in the battery cabinet.
The monitoring system mainly monitors the functions of external communication, network data monitoring and data acquisition, analysis and processing, ensuring accurate data monitoring, high voltage and current sampling accuracy, data synchronization rate and fast execution speed of remote control commands; the battery management unit has high-precision monomers. The voltage detection and current detection functions ensure the voltage balance of the battery modules and avoid circulating currents between the battery modules, which affects the operating efficiency of the system.
In order to ensure the safety of the system, the container is equipped with a special fire protection and air conditioning system. The fire protection system senses the fire through smoke sensors, temperature sensors, humidity sensors, emergency lights and other safety equipment, and automatically extinguishes the fire; the special air conditioning system according to the external environment temperature, The cooling and heating system of the air conditioner is controlled by the thermal management strategy to ensure that the temperature in the container is in a suitable range and prolong the service life of the battery.
The energy storage converter is an energy conversion unit that converts battery DC power into three-phase AC power, which can operate in grid-connected and off-grid modes. In grid-connected mode, the converter interacts with the power grid according to the power command dispatched by the upper layer; in off-grid mode, the energy storage converter can provide voltage and frequency support for the plant load, and provide black-start power for some renewable energy sources. The outlet of the energy storage converter is connected to the isolation transformer, so that the electricity of the primary side and the secondary side is completely insulated, and the safety of the container system is guaranteed to the greatest extent.
Mobile energy storage systems have been widely used in power system transmission, distribution and other fields due to their outstanding flexibility and convenience. Compared with the traditional fixed energy storage power station, the modular design of the container energy storage system adopts the internationally standardized container size, which allows ocean and road transportation, and can be hoisted by overhead cranes, with strong mobility and no geographical restrictions. In addition, the container energy storage system can be produced in a factory, and can be assembled and debugged directly in the workshop, which greatly saves the construction and operation and maintenance costs of the project, and monitors accident isolation. It is believed that with the continuous breakthrough of battery technology, the energy density of mobile energy storage systems will be further improved, and the cost will be greatly reduced. The actual value of mobile energy storage systems will continue to be reflected, and the scope of application will continue to expand. It will become an important carrier to promote the revolution of energy production and consumption, and it is a technology and industry with great development prospects in the energy Internet.

Key words:
​#BESS container #BESS

    TLS Offshore Containers / TLS Special Containers is a global supplier of standard and customised containerised solutions with a 150,000 square meters manufacturing base located in China, which allows TLS to provide the most cost-effective and complete containerised solutions to worldwide clients.
    Any requirements about Battery Energy Storage System Container |Accommodation Cabin |Workshop Container |Temporary refuge (TR) shelter |MWD/LWD cabin |Reefer container |Sewage treatment plant container etc, please don’t hesitate to contact us. 
    We will provide professional design solutions and high-quality services. All the production process we will have a dedicated team to follow up to ensure product quality.
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     E-mail: sales@tls-containers.com   
    Hotline: +65-65637288; +65-31386967

Battery Energy Storage Container（BESS）, It is applied to industrial and commercial energy storage, distributed energy system, and microgrid system. The energy storage device, which integrates a lithium-ion battery system, energy conversion system, energy management system, monitoring system, temperature control system, and fire control system, can be customized according to customer requirements.
​
If you have any inquiries on BESS containers, please download the check list and send it together with your inquiry.

Don’t hesitate to contact us for more information about the battery energy storage system container, We are eager to explain the possibilities for your applications. Please download Energy Storage System (ESS) Containers brochure for reference. 

Lithium battery fires are mainly the result of the decomposition and burning of electrolyte, which is a kind of hydrocarbon gas burning fire. In the case of battery overheating, excessive charging and discharging, battery design defects and short circuits caused by raw material defects, chemical reactions occur between battery materials inside the battery, and the electrolyte decomposes to generate a large amount of heat and gas, resulting in thermal runaway of the battery. The thermal runaway is the main reason for the burning of the electrolyte. Once thermal runaway occurs, the battery temperature rises rapidly, directly causing the battery material to burn. When the concentration of flammable gas produced by the decomposition and combustion of the lithium battery electrolyte reaches a certain level, it will explode when it encounters an open flame. In large-scale battery energy storage containers, the battery packs have the characteristics of high density and centralized distribution. The lithium battery modules are connected in series to form a single battery pack and multiple battery packs. A large-capacity energy storage unit is formed in parallel, which not only increases the probability of lithium battery failure, but also increases the fire spread channel because the battery cannot be cut off in the event of a fire.
There are a large number of auxiliary electrical equipment in the lithium battery energy storage container. The unsafe use of these equipment also increases the overall fire risk of the storage container, such as accidental high voltage and large current (lighting, surge) intrusion. High voltage and high current invade the lithium battery energy storage container. On the one hand, the electronic equipment in the lithium battery energy storage container is highly integrated, which reduces its resistance to high voltage and high current; on the other hand, the system uses a large number of communication lines have added channels for high voltage and high current intrusion. At the same time, the failure of the protection element is also one of the important causes of fire. Long-term heating and ultra-high temperature caused oxidation and corrosion of some electrical components in the cabinet, and aging of some insulating materials. The overcurrent protection in the battery, the DC fuse and the overcurrent fuse in the battery failed to effectively isolate the short circuit fault and could not meet the original design resistance and insulation. Therefore, the overall electrical safety of the lithium battery energy storage container system has a large hidden danger, and it will cause the spread of fire.
When a lithium battery burns, a large amount of gas is generated, mainly organic gases such as hydrogen, carbon monohydride, carbon dihydride, methane, benzene, and toxic gases such as hydrogen chloride and hydrogen fluoride.
In the event of a fire, the hydrogen, carbon monohydride and other combustible gases released by the lithium battery inside the lithium battery energy storage container under high temperature conditions cannot be effectively controlled, which may cause the fire to spread rapidly or even explode, endangering the main electrical equipment, and causing property damage.
The fire extinguishing system in Lithium battery energy storage container adopts non-conductive suspension type, cabinet type or pipe network type heptafluoropropane (HFC) fire extinguishing system. At the same time, a nitrogen fire extinguishing system is also arranged. The lithium battery energy storage container gas fire extinguishing system consists of heptafluoropropane (HFC) fire extinguishing device, pressure relief device, gas fire extinguishing controller, fire detector and controller, emergency start stop button and isolation module, smoke detector, sound and light alarm, etc. to realize automatic detection, alarm, and fire protection functions in the protection zone.
In the containerized lithium battery energy storage system, each container is a protection area, when smoke or temperature change is detected, the sound and light alarm will immediately respond to the fire. Extinguishing the fire in the early stage ensures the safety of the energy storage container. At the same time, considering the processing method of the collected signals, to increase the number of audible and visual alarms and arrange them in places where there are frequent patrols and guards.
At the same time, considering that lithium battery energy storage containers are prone to explosion, according to the characteristics of different lithium batteries, the corresponding explosion-proof system is configured according to the characteristics of different lithium batteries. The fire extinguishing system is also inter-connected with the controller, the fan, power supply, etc. and transmit the fire signal to the fire control centers.