Mobile energy storage system is a kind of energy storage device integrating energy storage battery system, battery management system, energy management system and transportation platform. It has the characteristics of mobility and flexibility, fast response and convenient maintenance. It is widely used in the fields of power security, emergency communication, important activities, rescue and disaster relief, military command, field exploration, etc. In some application fields, such as key facilities to ensure power supply in a short period of time, seasonal adjustment of the load curve in the region, etc., mobile power storage system is to be used. Mobile lithium-ion battery energy storage system in different multi-dimensional scenarios demand is relatively large, one is the flexible deployment of energy storage power station, seasonal load power supply, electric vehicle road rescue this piece, for the diversity of application scenarios and environmental complexity of the mobile energy storage system comprehensive performance to put forward a higher demand.
Mobile lithium storage system can be widely used in power system transmission, distribution and distributed new energy, modular design makes it easy to move to meet the demand of power supply load reliability, and has good social benefits and development prospects in improving the satisfaction of power supply services, expanding the scope of energy services, improving the utilization of renewable energy, and promoting ecological environmental protection.
Mobile lithium battery technology innovation can lead the pace of technological replacement and upgrade of various industries, at present, lithium battery technology has only gained more than 10 years of development, the road ahead is still far, the technical shortcomings are still purely in, the key technical issues overlapping generation upgrade is crucial.
At present, mobile lithium-ion battery energy storage system which key technologies urgently need to be addressed?
1. Key technology quality and safety
Quality and safety first of all to mention on the lithium-ion battery this, because the battery is currently on the core multi-system multi-type multi-manufacturers, different manufacturers have different models, the overall safety and quality of the existence of several, safety protection thermal field uniformity, heat insulation and flame retardant, fire extinguishing, these two focus on the embodiment of our entire electrical, structural, heat dissipation.
2. Selection of lithium batteries
At present, we use more lithium iron phosphate batteries, because the products of different manufacturers also exist in many different, product performance or there are certain differences, there is battery abuse, and even energy storage technology standards now also have national standards, some standards are not strictly enforced, which can easily lead to lithium-ion battery performance differences are particularly large, and even poor consistency, so that quality battery selection.
3. Battery management technology
Management of the full installation cycle of the battery, there is a problem information collection is now inaccurate, about state assessment, SOC, SOH, resulting in voltage collection temperature collection analog collection, will affect the operation of the whole system, so that the realization of high-precision long-term stable lithium-ion battery management system is also a key to the safe application of mobile energy storage.
4. Thermal field uniformity, thermal design thermal simulation
We cover the thermal field uniformly to the whole system, a system inside, the thermal field simulation to the full size of the platform to do this piece. So that the entire battery thermal field simulation is also electrochemical performance, the temperature requirements are particularly high, the management of the entire system of thermal is also the focus of the safe and efficient operation of energy storage.
5. Safety protection
Now this safety protection, lithium-ion batteries throughout the pseudo-thermal runaway, plus diaphragm, the temperature and heat isolation, now there are two problems, the first is not any isolation between the battery, plus excessive protection will also have this problem, one is the insulation design, the other is with different excessive protection, bringing heat accumulation, so that the current words, to be robust and reliable heat dissipation, comprehensive protection of A strategy, this is also the security of energy storage mobile security strategy.
6. Fire extinguishing
Lithium iron phosphate batteries are now used although it is relatively safe, but there is also a fire hazard, the current safety research, in two areas, one is fire, re-ignition of this piece, this last off mobile energy storage security necessary a measure, may be a focus of future lithium battery safety.
Mobile lithium-ion battery energy storage system product features
● High energy density, good consistency of the battery cells.
● Modular design, high maintainability
●Have a neat and comfortable control room
Graphical human-machine interface, easy to control
Safe and reliable BMS system
Good thermal management system
●Equipment section is mobile and widely used
Long cycle life, green environment, no heavy metal, noise and exhaust gas pollution, no primary energy consumption
●Emergency power supply, usually can save the peak and valley electricity prices, the whole life cycle
The new generation of intelligent mobile lithium-ion battery storage system vehicle truly realizes the integration of "peak and valley reduction + power preservation + emergency + backup + capacity expansion + intelligent charging and sales + mobile rescue", which can not only supply power for emergency repair of earthquake, ice disaster, mining disaster, etc., but also supply power for major political power preservation activities. In addition to supplying emergency backup power for large data centers, hospitals, airports, communications, etc., temporary power supply during line maintenance, eliminating ice melt for ice-covered lines, adjusting the peak and valley of electricity load for islands, mountainous areas, urban commercial areas, etc., charging electric vehicles in cities, etc.
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