CN113541322A - Mobile energy storage power supply vehicle - Google Patents
Mobile energy storage power supply vehicle Download PDFInfo
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- CN113541322A CN113541322A CN202110945689.5A CN202110945689A CN113541322A CN 113541322 A CN113541322 A CN 113541322A CN 202110945689 A CN202110945689 A CN 202110945689A CN 113541322 A CN113541322 A CN 113541322A
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- energy storage
- power supply
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- power
- carriage
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J15/00—Systems for storing electric energy
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60P—VEHICLES ADAPTED FOR LOAD TRANSPORTATION OR TO TRANSPORT, TO CARRY, OR TO COMPRISE SPECIAL LOADS OR OBJECTS
- B60P3/00—Vehicles adapted to transport, to carry or to comprise special loads or objects
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/28—Arrangements for balancing of the load in a network by storage of energy
- H02J3/32—Arrangements for balancing of the load in a network by storage of energy using batteries with converting means
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0013—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries acting upon several batteries simultaneously or sequentially
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
- H02J7/00309—Overheat or overtemperature protection
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0068—Battery or charger load switching, e.g. concurrent charging and load supply
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/02—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from ac mains by converters
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
Abstract
The invention discloses a mobile energy storage power supply vehicle, which comprises a second-class chassis vehicle and a vehicle-mounted power station box body, wherein the vehicle-mounted power station box body comprises a carriage, and an energy storage system, a control cabinet, an air conditioning system, a fire fighting system and a lighting system which are arranged in the carriage, the energy storage system comprises 387kWh energy storage batteries and a 120kW energy storage bidirectional converter cabinet, and the 387kWh energy storage batteries consist of two 193.5kWh lithium iron phosphate battery clusters; the 120kW energy storage bidirectional converter cabinet consists of two PCS of 60 kW; the direct current sides of the two 60kW PCS are connected into the two lithium iron phosphate battery clusters in a one-to-one correspondence mode, and the alternating current sides of the two 60kW PCS are connected into a city power in parallel. According to the mobile energy storage power supply vehicle, a user can charge the mobile energy storage power supply vehicle through power generation of a power grid; when the power grid is powered off, the mobile energy storage power supply vehicle can supply power, and the power supply system of the mobile energy storage power supply vehicle can be switched to the power grid to supply power to the mobile energy storage power supply vehicle when the power grid is not powered on, so that the reliability of a user load system is ensured.
Description
Technical Field
The invention relates to a mobile energy storage power supply vehicle.
Background
The charging facilities are imperfect and charging is urgent by combining the development trend of the current electric automobile and the construction conditions of the charging facilities in various places and sections.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a mobile energy storage power supply vehicle, which can be charged by a user through power generation of a power grid; when the power grid is powered off, the mobile energy storage power supply vehicle can supply power, and the power supply system of the mobile energy storage power supply vehicle can be switched to the power grid to supply power to the mobile energy storage power supply vehicle when the power grid is not powered on, so that the reliability of a user load system is ensured. Meanwhile, the energy storage power supply vehicle can be used in a peak clipping and valley filling system, and the purpose of saving electric charge is achieved.
The technical scheme for realizing the purpose is as follows: the utility model provides a mobile energy storage power supply vehicle, includes two kinds of chassis cars and on-vehicle power station box, two kinds of chassis cars are connected with on-vehicle power station box, on-vehicle power station box includes carriage and sets up energy storage system, switch board, air conditioning system, fire extinguishing system and lighting system in it, wherein:
the energy storage system comprises 387kWh energy storage batteries and a 120kW energy storage bidirectional converter cabinet, wherein the 387kWh energy storage batteries consist of two 193.5kWh lithium iron phosphate battery clusters; the 120kW energy storage bidirectional converter cabinet consists of two 60kW PCS (energy storage bidirectional converters); the direct current sides of two 60kW PCS are connected into two lithium iron phosphate battery clusters in a one-to-one correspondence mode, and the alternating current sides of the two 60kW PCS are connected into a city power and are connected in parallel;
an EMS controller is arranged in the control cabinet, and the EMS controller is externally connected with a current or power monitoring instrument of a load monitoring point of a commercial power grid of a user; the energy storage system is accessed to an energy storage system smart cloud network through a 4G wireless gateway of the EMS controller;
the carriage is sequentially divided into an energy storage battery area, a vehicle door area, a control area and an exhaust area from the vehicle head to the vehicle tail, and the fire-fighting system comprises a fire-fighting control panel and a heptafluoropropane fire extinguishing device;
the heptafluoropropane fire extinguishing device and two 193.5kWh lithium iron phosphate battery clusters are respectively arranged in the energy storage battery area, and the fire control panel, the control cabinet and the energy storage bidirectional converter cabinet are respectively arranged in the control area of the carriage;
the air conditioning system comprises two air conditioner internal units and two air conditioner external units, wherein the two air conditioner internal units are arranged in an energy storage battery area and a control area of the carriage in a one-to-one correspondence mode, and the two air conditioner external units are arranged in an exhaust area of the carriage.
The mobile energy storage power supply vehicle is characterized in that grid-connected and off-grid static transfer switches are arranged on grid-connected points of two 60kW PCS of the energy storage system, which are connected to the mains electricity, and the grid-connected and off-grid static transfer switches are communicated with the EMS controller.
The direct current side of each 60kW PCS and the connecting end of the corresponding lithium iron phosphate battery cluster are provided with a battery breaker.
The mobile energy storage power supply vehicle comprises 21 battery modules and an active balancing PMS system thereof, wherein each battery module adopts a 120Ah cell 2P12S and a 38.4V/240Ah module; and the active equalization PMS system is respectively communicated with the EMS controller and two PCS systems with 60 kW.
The mobile energy storage power supply vehicle is characterized in that the EMS controller is communicated with the lithium iron phosphate battery cluster.
The mobile energy storage power supply vehicle is characterized in that the lighting system comprises a direct-current explosion-proof energy-saving lamp, an alternating-current energy-saving lamp and a direct-current emergency lamp which are arranged in the carriage.
The mobile energy storage power supply vehicle is characterized in that at least 2 hygrothermographs are arranged in the carriage, and automatic air windows are arranged on the side walls of the energy storage battery area and the air exhaust area of the carriage.
According to the mobile energy storage power supply vehicle, the output ends of the energy storage bidirectional converters of the two mobile energy storage power supply vehicles are connected in parallel, so that the two mobile energy storage power supply vehicles run in parallel.
According to the mobile energy storage power supply vehicle, a user can charge the mobile energy storage power supply vehicle through power generation of a power grid; when the power grid is powered off, the mobile energy storage power supply vehicle can supply power, and the power supply system of the mobile energy storage power supply vehicle can be switched to the power grid to supply power to the mobile energy storage power supply vehicle when the power grid is not powered on, so that the reliability of a user load system is ensured. Meanwhile, the energy storage power supply vehicle can be used in a peak clipping and valley filling system, and the purpose of saving electric charge is achieved.
Drawings
FIG. 1 is a front view of a mobile energy storage powered vehicle of the present invention;
FIG. 2 is a top view of the mobile energy storage powered vehicle of the present invention;
fig. 3 is a circuit topology diagram of the energy storage system of the mobile energy storage power supply vehicle.
Detailed Description
In order that those skilled in the art will better understand the technical solution of the present invention, the following detailed description is given with reference to the accompanying drawings:
referring to fig. 1, 2 and 3, in a preferred embodiment of the present invention, a mobile energy storage power supply vehicle includes a class ii chassis 100 and a vehicle-mounted power station box 300, the class ii chassis 100 is connected to the vehicle-mounted power station box 300, and the vehicle-mounted power station box 300 includes a compartment 301, and an energy storage system, a control cabinet 2, an air conditioning system, a fire protection system and a lighting system disposed therein.
The energy storage system comprises an energy storage battery of 387kWh and an energy storage bidirectional converter cabinet 10 of 120kW, and the energy storage battery of 387kWh consists of two lithium iron phosphate battery clusters 12 of 193.5 kWh; the 120kW energy storage bidirectional converter cabinet 10 consists of two 60kW PCS 11; the direct current sides of the two 60kW PCS 11 are correspondingly connected into the two lithium iron phosphate battery clusters 12 one by one, and the alternating current sides of the two 60kW PCS 11 are connected into the city power and are connected in parallel to form a group series connection; the energy storage system connected in a group-series mode can avoid the circulation of the lithium iron phosphate battery cluster 12, and the availability and the stability of the system are improved. When one PCS 11 or lithium iron phosphate battery cluster 12 has a fault, the operation of the whole energy storage system cannot be influenced. The direct current side of each 60kW PCS 11 is connected with the corresponding lithium iron phosphate battery cluster 12 through a battery breaker 13.
An EMS (energy management system) controller 21 is provided in the control cabinet 2.
A grid-connected and off-grid static transfer switch STS is arranged on a grid-connected point of two 60kW alternating current sides of the PCS 11 of the energy storage system, the grid-connected and off-grid static transfer switch STS is communicated with an EMS controller 21, and the EMS controller 21 is externally connected with a current or power monitoring instrument 400 of a load monitoring point of a commercial power grid of a user; the energy storage system accesses the energy storage system smart cloud network 500 through the 4G wireless gateway 22 of the EMS controller 21.
Each lithium iron phosphate battery cluster 12 comprises 21 battery modules and an active balancing PMS system 14 thereof, and each battery module adopts a 120Ah cell 2P12S and a 38.4V/240Ah module; the active equalization PMS system 14 communicates with the EMS controller 21 and two PCS 11 of 60kW, respectively. The EMS controller 21 communicates with the lithium iron phosphate battery cluster 12.
The carriage 301 is divided into an energy storage battery area, a door area, a control area and an exhaust area from the head to the tail of the vehicle in sequence, and the fire-fighting system comprises a fire-fighting control panel 31 and a heptafluoropropane fire extinguishing device 32; the heptafluoropropane fire extinguishing device 32 and the two 193.5kWh lithium iron phosphate battery clusters 12 are respectively arranged in an energy storage battery area of a carriage, and the fire control panel 31, the control cabinet 2 and the energy storage bidirectional converter cabinet 10 are respectively arranged in a control area of the carriage; the air conditioning system comprises two air conditioner internal units 41 and two air conditioner external units 42, wherein the two air conditioner internal units 41 are arranged in an energy storage battery area and a control area of a carriage in a one-to-one correspondence manner, and the two air conditioner external units 42 are arranged in an exhaust area of the carriage.
The lighting system comprises a direct-current explosion-proof energy-saving lamp, an alternating-current energy-saving lamp and a direct-current emergency lamp which are arranged in the carriage.
At least 2 hygrothermographs are arranged in the carriage, and automatic air windows are arranged on the side walls of the energy storage battery area and the air exhaust area of the carriage.
The output ends of the energy storage bidirectional converters of the two mobile energy storage power supply vehicles are connected in parallel, so that the two mobile energy storage power supply vehicles run in parallel, and the running power of the total power of 250kW is realized.
The grid-connected and off-grid static transfer switch STS of the mobile energy storage power supply vehicle can realize grid-connected and off-grid switching within 20ms, and ensures the power supply safety of important equipment such as computers, servers and the like. Automatic switching access control of the energy storage system as a standby power supply is realized, namely when the mains supply of an important load is powered off, the EMS controller 21 immediately switches the energy storage system into the energy storage system according to a breaker disconnection signal of the mains supply inlet wire on the load side, and the lithium iron phosphate battery continuously supplies power to the load through the PCS to realize continuous power supply of the load.
Referring to fig. 3, in the mobile energy storage power supply vehicle of the present invention, a commercial power circuit breaker 15 and a lightning protection device 16 are disposed between a commercial power terminal 19 and a grid-connected/off-grid static transfer switch STS, and a circuit breaker 17 is disposed between a grid-connected point of a PCS connected to a commercial power and a parallel terminal 18.
When the mobile energy storage power supply vehicle is used, the mobile energy storage power supply vehicle has the following four working modes:
(1) the mains supply electricity limiting mode is as follows:
the energy storage system of the mobile energy storage power supply vehicle is connected to a current or power monitoring instrument 400 of a load monitoring point of a commercial power grid of a user, and a smart meter of a buckle type CT (current transformer) and a PT (voltage transformer) is required to be installed at a power inlet contact of the user to collect and connect electric quantity information to an EMS controller 21. Therefore, according to the setting of a user, during the electricity limiting period, the lower limit power (access point current limit) of the mains supply needs to be kept, the energy storage system works in a grid-connected PQ control mode, power compensation is carried out according to the power instruction of the EMS controller 21, and the load exceeding the limit is provided by the energy storage system (needing to be below a PCS rated value), so that the grid load of the user is not limited.
(2) The power generation car access mode:
the PCS works in an off-network mode, namely, a cable of an automatic cable turntable configured on the mobile energy storage power supply vehicle is connected with a user power generation vehicle access box and is connected with a user power distribution system to serve as a standby power supply, and the cable is manually or automatically connected when the commercial power is lost; wherein manual and automatic settings can be made in the EMS controller 21, wherein the automatic mode requires the access of the state of the mains supply incoming line switch of the user and the related switch of the user load to ensure the safety of the confirmation; after the system is connected, the energy storage system becomes an off-grid VF control mode, and a stable power voltage source is provided for user loads not exceeding the capacity of the energy storage PCS.
(3) Grid-connected peak clipping and valley filling mode:
the energy storage system of the mobile energy storage power supply vehicle is connected to a mains supply power grid and can be set to automatically finish a peak-off valley-filling operation mode, the electricity compensation of a system battery is finished in a valley electricity stage, the power consumption peak section is monitored according to a set power curve or incoming line power, the energy storage system and the mains supply carry user loads together, the operation mode of power curve setting or incoming line power limit demand control can be realized, and the basic electricity charge of user demand is reduced.
(4) The two vehicles work in parallel:
when the two vehicles work in parallel, EMS controllers of the two mobile energy storage power vehicles adopt communication lines to realize a master-slave working mode, and a master machine realizes the control of the working load of a slave machine. When the grid-connected operation (including load limiting, peak clipping and valley filling and the like) is in a working mode, the host machine implements charge-discharge power control of each PCS according to external power grid signals; when in an off-grid mode (diesel engine), the host machine realizes the off-grid mode control mode starting output of the host machine PCS, then the slave machine PCS and the host machine output are connected in parallel to run, and then a stable power supply is provided for the load within a rated output current range when the load is connected.
According to the mobile energy storage power supply vehicle, the 120kW energy storage bidirectional converter cabinet 10 can realize alternating current-direct current conversion between a power grid and an energy storage battery, so that bidirectional energy flow between the power grid and the energy storage battery is completed, and the mobile energy storage power supply vehicle is a main actuating mechanism and a core component of an energy storage system. The PCS can adopt a NESI series grid-connected and grid-disconnected group-string centralized energy storage converter, realizes the charge and discharge management of a battery system, the charge and discharge power control of the battery energy storage system, two operation modes of grid connection/grid disconnection and a mode switching function through a high-level control strategy, has a perfect protection function, and meets the grid-connected and grid-disconnected requirements of the system. The product has the following characteristics:
(1) by adopting the group-string centralized energy storage converter, the system presents the single-machine characteristic to the power grid and presents the fine management to the battery.
(2) Under the condition of multi-machine parallel connection, ultra-high-speed dynamic response can still be realized, and the full-power response of the system can be completed within 40 ms.
(3) The system has the capability of active equalization of the SOC between the DC side clusters, and the balance point of the SOC is selected according to the real-time state (internal resistance) of the battery cluster.
(4) The design of the multi-path independent direct current input interface effectively avoids the circulation current of the parallel connection of a plurality of groups of battery clusters under high power, and improves the system safety and the service life of the battery.
(5) The system has good current equalizing effect, avoids uneven power distribution of a plurality of parallel battery clusters, thereby reducing the absolute peak current level of a single battery cell, prolonging the service life of the battery pack system and reducing the cost of a direct current side. Meanwhile, the cost of battery model selection is reduced.
(6) The battery cluster is independently accessed into the PCS, the direct current side fault is locally locked, the system reliability is greatly improved, the single-cluster battery system is maintained, only the corresponding module is stopped, the system does not need to be stopped, and the benefit is guaranteed.
(7) Due to the modular design, when a single module fails, the system work is not influenced, and the system is externally represented as a parallel reliability model.
(8) The modular design, spare parts and spare parts are standardized units, and the maintenance task can be completed by one person in the system pre-maintenance design.
(9) The energy storage system can be compatible with different batteries of SOC and DCR, even different new and old batteries, and for frequency modulation application, only the corresponding battery cluster needs to be maintained, so that all the battery clusters are prevented from being replaced at one time, and operation and maintenance cost is greatly saved.
(10) The grid-connected and off-grid static transfer switch STS can be configured, grid-connected and off-grid switching within 20ms is realized, and the power supply safety of important equipment such as computers and servers is guaranteed.
The mobile energy storage power supply vehicle disclosed by the invention is matched with an energy type lithium battery system, selects a lithium iron phosphate battery with long cycle life and high energy density, and is matched with an active equalization PMS control technology and a three-level safety protection measure, so that the cycle life and the reliability are ensured, and meanwhile, the vehicle has lasting stability, larger battery capacity and lower electricity consumption cost.
This energy storage system configuration 120Ah electricity core 2P12S, 38.4V/240Ah module, every lithium iron phosphate battery cluster 12 includes 21 modules and its initiative equalizing PMS system, and electric quantity 193.536kWh, 2 sets of PCS 11 each insert a lithium iron phosphate battery cluster 12, and parallelly connected energy storage electric quantity that realizes 387kWh through the interchange side provides permanent high energy power guarantee for the system. The active balancing PMS system adopts the design of collecting all levels of cell voltage and cell electrode temperature, and an advanced algorithm realizes accurate SOC calculation, so that the safe and reliable operation of the cell of the battery system is ensured.
The carriage of the mobile energy storage power supply vehicle adopts the standard container body design: the system adopts the design of a standard carriage of a power supply vehicle, and equipment in all supply ranges, an air conditioner, an automatic fire fighting system, illumination in a cabinet, a hygrothermograph and the like are required to be installed in the box. The integral box body meets the structural design requirement of carriage integration. The concrete expression is as follows:
(1) the structural design of the carriage is as follows:
the carriage has good functions of corrosion prevention, fire prevention, water prevention, dust prevention (wind and sand prevention), shock prevention, ultraviolet ray prevention, theft prevention and the like, and can be guaranteed not to break down due to factors such as corrosion, fire prevention, water prevention, dust prevention, ultraviolet ray and the like within 25 years. The anticorrosive function ensures that the appearance, mechanical strength, corrosion degree and the like of the carriage meet the requirements of actual use within 25 years; the fireproof function ensures that the carriage shell structure, the heat insulation material, the internal and external decorative materials and the like all use flame retardant materials; the waterproof function ensures that the top of the box body is free from water accumulation, water seepage and water leakage, the side surface of the box body is free from rain, and the bottom of the box body is free from water seepage; the dustproof (wind and sand prevention) function ensures that standard ventilation filter screens which can be conveniently replaced are additionally arranged at the air inlet and the air outlet of the carriage and the air inlet of the equipment, so as to ensure that dust can be effectively prevented from entering the carriage when the carriage encounters strong wind and sand blowing weather; the long-term effectiveness of the dustproof (wind and sand prevention) function of the carriage is ensured; the shockproof function ensures that the mechanical strength of the carriage and the internal equipment thereof meet the requirements under the conditions of transportation and earthquake, and the faults of deformation, abnormal function, no operation after earthquake and the like do not occur; the ultraviolet-proof function ensures that the properties of the materials inside and outside the carriage are not degraded by ultraviolet irradiation, do not absorb the heat of ultraviolet rays, and the like.
The frame structure and the supporting structure of the carriage are all made of Bao steel, Wu steel or high weather resistant steel with the performance of international well-known brand not lower than CORTEN A or 09CuPCrNi A, and the technical performance of the frame structure and the supporting structure of the carriage can meet the mechanical performance requirement in initial supply after comprehensive corrosion for 25 years under the actual environmental condition of the location of a project.
The carriage shell is made by adopting a hot-rolled or cold-rolled high-weather-resistance steel plate (the performance is not lower than that of CORTEN A or 09CuPCrNi A) with the effective thickness of not less than 1.6mm (the roof is not lower than 2.0mm) and spraying paint after surface treatment, a paint spraying process layer meets the lowest paint spraying process of a zinc-rich primer, a middle paint and a high-weather-resistance polyester finish paint, and the high-weather-resistance steel plate adopts high-quality steel plate products of domestic and foreign famous factories such as Bao steel, Wu steel and the like.
The inner wall of the carriage is made of a color steel plate with the effective thick bottom not less than 0.8mm and adopting the processes of galvanizing, surface treatment (chemical conversion layer), primer, intermediate paint and finish paint; the material of the zinc coating on each surface of the color steel plate cannot be lower than 75g/m2 (single surface); the finish paint uses a high-quality high-weatherability coating (a pure PE coating is not used), and the minimum weatherability of the used finish paint material is not lower than that of the high-weatherability polyester.
(2) Ventilation and heat dissipation, heat insulation and preservation and internal temperature control design of carriage
The carriage possesses excellent ventilation cooling, thermal-insulated heat preservation and inside temperature control ability to it is not less than 2 hygrothermographs to arrange in the carriage. The ventilation and heat dissipation capacity ensures that the carriage has sufficient air inlet volume and air outlet volume, an excellent dustproof system and an excellent air circulation system, reliable and effective forced ventilation and heat dissipation equipment is configured in the carriage, and meanwhile, when the ventilation system does not work at night, the air outlet is effectively protected, so that small animals, dust and the like are prevented from entering and flowing backward with outside air; the heat insulation and preservation capability requires that the carriage is provided with a damp-proof, flame-retardant and heat insulation layer with the effective thickness of not less than 50mm and the function of strengthening insulation, so that the outdoor high temperature and low temperature can not be transmitted into the carriage; the temperature controller and the air volume control system such as an automatic air window are arranged in the carriage, so that the temperature of the external environment is higher than 10 ℃, and the average air temperature in the carriage is not higher than 5 ℃ of the external environment; when the air temperature in the carriage exceeds a first-level set value (the factory default is 45 ℃), the auxiliary exhaust system is started;
the temperature control of the air conditioner is arranged in the carriage, the configuration power of the air conditioner needs to meet the control requirement of the temperature of the field environment, a forced air cooling heat dissipation mode is adopted among the UPS converter devices, the environment adopts the heat dissipation mode of the air conditioner, and the matched UPS converter needs to meet the requirement of full-load operation under the working condition of no air conditioner when the carriage is opened for ventilation.
(3) Carriage fire extinguishing system design
The automatic fire extinguishing system of heptafluoropropane is disposed in the carriage, the fire extinguishing system with corresponding capacity is designed strictly according to the size of the carriage and the installation capacity of the battery, the fire extinguishing system has a communication function, corresponding fire extinguishing signals are uploaded to the monitoring platform, and real-time monitoring is achieved.
The fire-fighting system can automatically start heptafluoropropane to extinguish fire and control fire hazard once the fire hazard exists.
A fire-fighting system must adopt a fire-fighting control host machine with a known brand and a heptafluoropropane steel cylinder with the volume not less than 26 liters, and a three-level control system is required to be designed for fire fighting, and can be controlled by three positions, namely automatic detection control, manual control of the fire-fighting host machine and manual forced control.
According to the mobile energy storage power supply vehicle, the EMS controller 21 is an energy storage intelligent monitoring device and is core basic hardware of an on-site monitoring system, and the EMS controller 21 adopts LEC-3201, so that the requirements on the function and performance of an intelligent cloud network of the energy storage system are met; based on an internet of things data transmission MQTT protocol and a TLS protocol, the cloud is accessed, and local management monitoring and cloud remote management of the energy storage device are realized by utilizing an intelligent optical industrial internet cloud platform.
The functions are as follows: LEC-3201 is a fan-free, low-power consumption, embedded communication management equipment for realizing the on-site information collection of the energy storage system, and intensively transmits the information to the smart optical industrial internet cloud platform to realize local and remote monitoring. The data of the existing devices in the existing places are directly collected in a small and medium-sized energy storage automatic system, and are transmitted to a remote monitoring background through communication protocols (101, 104, DNP, Modbus and the like) and communication media (Ethernet, RS232/422/485, CAN and the like) specified by a user, so that the monitoring of the background on the whole site is completed. The implementation mode is as follows: LEC-3201 has passed china's electric power four grades of authentication of electric academy of sciences, and the mainboard passes through board-mounted serial ports, PCIe and PCI-104 interface, can provide 2 way hundred megaly light, 4 way giga net gape, 8 way isolation serial ports, switching value input/output interface and 1 way B sign indicating number to time interface etc. extend the function.
LEC-3201 supports 110/220V alternating current and direct current dual power supply redundancy, supports Windows XP Embedded and Linux operating system, and can provide customized image files and rich software environment. Meanwhile, the CTR button is customized and controlled by a client, and the Run and PIO LED indicator lamps are customized in physical significance by the client so as to adapt to different field environment requirements and client requirements of the client.
LEC-3201 is used as a system EMS controller 21, is accessed into all digital devices of an energy storage mobile original vehicle, collects relevant operation information of relevant digital intelligent instruments, control and the like, configures a display screen to display the states of all parts of the mobile power supply vehicle on site, controls a PCS operation mode according to setting, distributes power during grid connection, and completes functions of peak clipping, valley filling, user power grid load operation and the like.
According to the mobile energy storage power supply vehicle, an energy storage system is accessed to an energy storage system smart cloud network through a 4G wireless gateway of an EMS (energy management system) controller 21, and WEB application, mobile terminal APP application and the like based on the functions of data integration of multi-source heterogeneous data access, equipment operation monitoring, equipment life cycle management, equipment intelligent operation and maintenance, big data intelligent analysis, predictive maintenance and the like are realized. At present, the method has a technical foundation, the corresponding technology and application are comprehensively and practically tested, the system is stable, and the technology is mature. The development environment is friendly, simple and convenient, the development time is short, and the method has great development advantages.
The energy storage system smart cloud network provides a platform for comprehensive management of energy storage batteries, a current converter, a power distribution network, a fire protection system, a temperature control system and the like for an energy storage system of a smart optical energy storage company, and has various services such as real-time monitoring, time warning, income analysis, fault diagnosis, video monitoring, operation and maintenance management and the like, wherein the distributed power generation, battery charging and discharging and customer power utilization conditions are monitored in real time, the operation of an energy storage power station is monitored remotely, comprehensive operation and maintenance management is provided, the income of the energy storage system is analyzed, and optimal configuration and utilization of energy are realized.
And (3) real-time monitoring: and refreshing the running data of each line and equipment of the energy storage power station in real time, finding out abnormal conditions in time and quickly positioning and removing faults. And parameters such as the pressure difference and the temperature of the battery unit, the battery pack and the battery cluster are monitored, the consistency state of the battery is checked, and fine management is realized. The fire-fighting signal state is monitored in a key mode, and safe operation of the energy storage power station is guaranteed.
Running and analyzing: through big data analysis to battery historical data, grasp the performance index of battery, provide the support basis for fortune dimension work. And (4) counting the electric quantity of the electric meter, analyzing the power consumption habits of users, and accurately calculating the operation income of the power station. And analyzing historical equipment events of the energy storage power station, and providing data support for equipment modification and system upgrading of the system. The system operation data is analyzed, and the operation efficiency of the power station is improved; the equipment is monitored, early-warning and analyzed, and safe and stable operation of the equipment is ensured; and analyzing the operation income of the power station and providing decision basis for an operation manager.
The automatic management function is as follows: the battery state is automatically inspected, and a diagnosis report is periodically output; the alarm event drives the operation and maintenance work, and the automation of the operation and maintenance work is realized; equipment maintenance and updating, automatic remote parameter setting and software upgrading; and automatically adjusting the operation mode of the power station according to the power policy and the operation mode.
Safe operation: pushing alarm events in real time, and finding and processing abnormal conditions in time; the battery state is monitored in real time, and the service life of the battery is prolonged; the power station is monitored by video, and the operation condition of the power station is monitored visually; the operation environment is monitored in real time, and states such as temperature, humidity and fire fighting are mastered.
Event monitoring: and fault events are known early, and intelligent operation and maintenance are realized. Big data analysis user's custom, accurate propelling movement. And fault event one-key processing and closed-loop management. And short message and app message pushing are supported.
Operation management: analyzing the income trend of the energy storage power station and predicting the return period of the energy storage power station through daily, monthly and annual electric quantity and income statistics; the comparison is arranged to the same type power station income, and the operation mode of analysis power station adjusts the power station operation strategy, promotes the income and formulates energy storage power station planning target, and the real-time tracking target condition of accomplishing, power station operation efficiency.
And (3) supporting access: supporting peak shifting valley filling power stations, frequency modulation power stations, wind and light storage power stations and peak regulation power stations, and further performing real-time EMS management control functions such as advanced user demand side management functions;
managing equipment spare parts: the equipment spare parts and management processes such as storage, logistics and the like are brought into on-line platform management through data of suppliers and spare parts of access equipment, linkage of after-sale and spare part allocation is realized, and operation and maintenance efficiency is improved;
after-sale service flow: the method has the advantages that a linkage platform with a company call center is established, unified after-sale service operation and maintenance processes are realized, functions of automatic work order dispatching, on-line recording of a service site, quality investigation after service and the like are established, standardized and consistent after-sale service is realized, and customer satisfaction is improved.
The mobile energy storage power supply vehicle can simultaneously realize the functions of multiple operation modes:
(1) the mains supply power limiting mode is that, for example, during the power limiting period, the mains supply is kept at a low power (for example, 60kW), and the rest of the load is provided by the energy storage system;
(2) the power generation car access mode is characterized in that a user power distribution system is accessed to serve as a standby power supply through a power generation car access box, and the power generation car access box is manually or automatically accessed when the mains supply is power off;
(3) a grid-connected peak clipping and valley filling mode only carries partial load, and a peak clipping and valley filling operation mode is adopted, wherein the peak clipping and valley filling mode and the peak clipping and the valley filling mode carry load together with commercial power at a power consumption peak section;
(4) the two vehicles work in parallel, the output ends of the energy storage bidirectional converters of the two mobile energy storage power vehicles are connected in parallel, the two mobile energy storage power vehicles run in parallel, and the running power of the total power of 250kW is realized.
In summary, according to the mobile energy storage power supply vehicle disclosed by the invention, a user can charge the mobile energy storage power supply vehicle through power generation of the power grid; when the power grid is powered off, the mobile energy storage power supply vehicle can supply power, and the power supply system of the mobile energy storage power supply vehicle can be switched to the power grid to supply power to the mobile energy storage power supply vehicle when the power grid is not powered on, so that the reliability of a user load system is ensured. Meanwhile, the energy storage power supply vehicle can be used in a peak clipping and valley filling system, and the purpose of saving electric charge is achieved.
It should be understood by those skilled in the art that the above embodiments are only for illustrating the present invention and are not to be used as a limitation of the present invention, and that changes and modifications to the above described embodiments are within the scope of the claims of the present invention as long as they are within the spirit and scope of the present invention.
Claims (8)
1. The utility model provides a mobile energy storage power supply vehicle, includes two kinds of chassis cars and on-vehicle power station box, two kinds of chassis cars are connected with on-vehicle power station box, a serial communication port, on-vehicle power station box includes carriage and sets up energy storage system, switch board, air conditioning system, fire extinguishing system and lighting system in it, wherein:
the energy storage system comprises 387kWh energy storage batteries and a 120kW energy storage bidirectional converter cabinet, wherein the 387kWh energy storage batteries consist of two 193.5kWh lithium iron phosphate battery clusters; the 120kW energy storage bidirectional converter cabinet consists of two 60kW PCS; the direct current sides of two 60kW PCS are connected into two lithium iron phosphate battery clusters in a one-to-one correspondence mode, and the alternating current sides of the two 60kW PCS are connected into a city power and are connected in parallel;
an EMS controller is arranged in the control cabinet, and the EMS controller is externally connected with a current or power monitoring instrument of a load monitoring point of a commercial power grid of a user; the energy storage system is accessed to an energy storage system smart cloud network through a 4G wireless gateway of the EMS controller;
the carriage is sequentially divided into an energy storage battery area, a vehicle door area, a control area and an exhaust area from the vehicle head to the vehicle tail, and the fire-fighting system comprises a fire-fighting control panel and a heptafluoropropane fire extinguishing device;
the heptafluoropropane fire extinguishing device and two 193.5kWh lithium iron phosphate battery clusters are respectively arranged in the energy storage battery area, and the fire control panel, the control cabinet and the energy storage bidirectional converter cabinet are respectively arranged in the control area of the carriage;
the air conditioning system comprises two air conditioner internal units and two air conditioner external units, wherein the two air conditioner internal units are arranged in an energy storage battery area and a control area of the carriage in a one-to-one correspondence mode, and the two air conditioner external units are arranged in an exhaust area of the carriage.
2. The mobile energy storage power supply vehicle as claimed in claim 1, wherein a grid-connected and off-grid static transfer switch is arranged on a grid-connected point of two 60kW PCS of the energy storage system, which are connected to the mains, and the grid-connected and off-grid static transfer switch is communicated with the EMS controller.
3. A mobile energy storage power supply vehicle as claimed in claim 1, characterized in that a battery breaker is provided at the connection of the dc side of each 60kW PCS to the corresponding lithium iron phosphate battery cluster.
4. The mobile energy storage power supply vehicle of claim 1, wherein each lithium iron phosphate battery cluster comprises 21 battery modules and an active equalization PMS system thereof, and each battery module adopts a 120Ah cell 2P12S, 38.4V/240Ah module; and the active equalization PMS system is respectively communicated with the EMS controller and two PCS systems with 60 kW.
5. The mobile energy storage power supply vehicle of claim 1, wherein the EMS controller is in communication with the lithium iron phosphate battery cluster.
6. The mobile energy storage power supply vehicle according to claim 1, wherein the lighting system comprises a direct current explosion-proof energy-saving lamp, an alternating current energy-saving lamp and a direct current emergency lamp which are arranged in a vehicle cabin.
7. The mobile energy storage power supply vehicle of claim 1, wherein no less than 2 hygrothermographs are arranged in the carriage, and automatic air windows are arranged on the side walls of the energy storage battery area and the air exhaust area of the carriage.
8. The mobile energy storage power supply vehicle according to claim 1, wherein the output ends of the energy storage bidirectional converters of the two mobile energy storage power supply vehicles are connected in parallel, so that the two mobile energy storage power supply vehicles run in parallel.
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| CN202110945689.5A CN113541322A (en) | 2021-08-17 | 2021-08-17 | Mobile energy storage power supply vehicle |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114268166A (en) * | 2021-11-24 | 2022-04-01 | 国网浙江省电力有限公司诸暨市供电公司 | Mobile high-reliability power-off zero-perception uninterrupted switching system |
| CN114572092A (en) * | 2022-03-02 | 2022-06-03 | 青岛索尔汽车有限公司 | Mobile energy storage vehicle with heating and heat preservation functions |
| CN114884204A (en) * | 2022-06-21 | 2022-08-09 | 中信重工开诚智能装备有限公司 | High-voltage high-capacity mining explosion-proof emergency power supply and control method |
-
2021
- 2021-08-17 CN CN202110945689.5A patent/CN113541322A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114268166A (en) * | 2021-11-24 | 2022-04-01 | 国网浙江省电力有限公司诸暨市供电公司 | Mobile high-reliability power-off zero-perception uninterrupted switching system |
| CN114572092A (en) * | 2022-03-02 | 2022-06-03 | 青岛索尔汽车有限公司 | Mobile energy storage vehicle with heating and heat preservation functions |
| CN114572092B (en) * | 2022-03-02 | 2023-09-29 | 青岛索尔汽车有限公司 | Mobile energy storage vehicle with heating and heat preservation functions |
| CN114884204A (en) * | 2022-06-21 | 2022-08-09 | 中信重工开诚智能装备有限公司 | High-voltage high-capacity mining explosion-proof emergency power supply and control method |
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