CN116683314A - Energy storage cabinet and energy storage system - Google Patents
Energy storage cabinet and energy storage system Download PDFInfo
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- CN116683314A CN116683314A CN202310657101.5A CN202310657101A CN116683314A CN 116683314 A CN116683314 A CN 116683314A CN 202310657101 A CN202310657101 A CN 202310657101A CN 116683314 A CN116683314 A CN 116683314A
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- energy storage
- cabinet
- converter
- switch
- cabinet body
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- 238000004146 energy storage Methods 0.000 title claims abstract description 137
- 239000000779 smoke Substances 0.000 claims description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 16
- 238000004378 air conditioning Methods 0.000 claims description 13
- 238000007654 immersion Methods 0.000 claims description 12
- 238000002955 isolation Methods 0.000 claims description 9
- 230000001629 suppression Effects 0.000 claims description 4
- 238000012360 testing method Methods 0.000 claims description 4
- 238000009434 installation Methods 0.000 abstract description 14
- 239000000463 material Substances 0.000 abstract description 10
- 230000006870 function Effects 0.000 abstract description 7
- 238000010586 diagram Methods 0.000 description 15
- 238000013461 design Methods 0.000 description 12
- 230000002829 reductive effect Effects 0.000 description 10
- 238000010276 construction Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000012546 transfer Methods 0.000 description 4
- 238000004891 communication Methods 0.000 description 3
- 230000003247 decreasing effect Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000010616 electrical installation Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- HEZMWWAKWCSUCB-PHDIDXHHSA-N (3R,4R)-3,4-dihydroxycyclohexa-1,5-diene-1-carboxylic acid Chemical compound O[C@@H]1C=CC(C(O)=O)=C[C@H]1O HEZMWWAKWCSUCB-PHDIDXHHSA-N 0.000 description 1
- 101150028119 SPD1 gene Proteins 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 239000000443 aerosol Substances 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000000670 limiting effect Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/26—Casings; Parts thereof or accessories therefor
- H02B1/30—Cabinet-type casings; Parts thereof or accessories therefor
- H02B1/32—Mounting of devices therein
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/251—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders specially adapted for stationary devices, e.g. power plant buffering or backup power supplies
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/24—Circuit arrangements for boards or switchyards
-
- 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
-
- 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
- H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
- H02J7/35—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering with light sensitive cells
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The application discloses an energy storage cabinet and an energy storage system, wherein the energy storage cabinet comprises: cabinet body and cabinet door: the cabinet body comprises a first cabinet body and a second cabinet body which are arranged at two sides of the cabinet body, wherein the first cabinet body is used for arranging a battery system, and the battery system comprises a plurality of battery packs; the second cabinet body is used for arranging an electric module; the electric module at least comprises an energy storage converter module and a photovoltaic converter; the battery system is respectively and electrically connected with the energy storage converter module and the photovoltaic converter, so that the application can reduce the material cost and the installation cost, and can realize various requirements and configuration schemes such as various powers, functions, energy and the like in one cabinet.
Description
Technical Field
The application relates to the field of energy storage cabinets and energy storage systems, in particular to an energy storage cabinet and an energy storage system.
Background
The existing energy storage system is mainly characterized in that a battery system and an energy storage variable flow system are independently separated to carry out structural design, two sets of electric cabinets are formed, and cables are connected to complete installation and fixation during field installation. The system design needs to consider that two sets of cabinet bodies are needed when the battery cabinet and the electric cabinet are connected and installed on site, and cables with different lengths are needed to be customized between the cabinet bodies, so that the cost is increased; the floor platform on site is more in design and construction cost, the overall BOM cost and the construction labor cost are increased, so that the problem of the increase of the labor cost caused by long site installation time and the problem of the increase of the comprehensive cost caused by independent design of the structure are solved.
In addition, the energy storage system applied in the industrial and commercial fields needs to be subjected to different configuration schemes to solve the customer demands due to the fact that different application scenes and customer load power are needed to be considered, such as inverter power configuration, photovoltaic configuration, oil machine selection and allocation, different demands of electric quantity and the like. Different configurations form different product types, and meanwhile, development cost is increased, so that mass production cannot be truly realized.
Disclosure of Invention
The application aims to provide an energy storage cabinet and an energy storage system, which can be used for integrally designing the energy storage cabinet, so that the material consumption and the installation cost are reduced, and a plurality of configuration schemes can be matched.
The first aspect of the present application provides an energy storage cabinet comprising: cabinet body and cabinet door:
the cabinet body comprises a first cabinet body and a second cabinet body which are arranged on two sides of the cabinet body;
the first cabinet body is used for arranging a battery system, and the battery system comprises a plurality of battery packs;
the second cabinet body is used for arranging an electric module; the electrical module at least comprises an energy storage converter module and a photovoltaic converter;
optionally, the first cabinet body or the second cabinet body is further configured to set a plurality of reserved inserting frames.
Optionally, at least one of an access control sensor and a smoke sensor is further arranged on the inner wall of the first cabinet body or the second cabinet body in an extending manner; the lower extension of the first cabinet body or the second cabinet body is also provided with a water immersion sensor.
Optionally, a high-voltage test box is further arranged below the battery pack in the first cabinet body; and a lightning protection module is arranged in the second cabinet body.
Optionally, an energy management system, an emergency shutdown switch, an air conditioning system and a fire extinguishing device are arranged on the cabinet door.
Optionally, the energy management system is electrically connected with the emergency shutdown switch, the air conditioning system, the fire extinguishing device, the access control sensor, the smoke sensor and the water immersion sensor respectively; and the alarm device is used for executing corresponding alarm measures after receiving signals sent by the emergency shutdown switch, the air conditioning system, the fire extinguishing device, the access control sensor, the smoke sensor and the water immersion sensor.
In a second aspect, the present application provides an energy storage system comprising:
the device comprises a battery system, an energy storage converter module and a photovoltaic converter, wherein the energy storage converter module and the photovoltaic converter are electrically connected with the battery system;
the positive electrode output end of the photovoltaic converter is respectively connected with the positive electrode of the energy storage converter module and the positive electrode of the battery system, and the negative electrode output end of the photovoltaic converter is respectively connected with the negative electrode of the energy storage converter module and the negative electrode of the battery system.
11. Optionally, the battery system comprises a plurality of groups of battery packs connected in series, a battery management controller, a DC/DC converter, a fuse and a plurality of control switches;
the positive electrode of the first battery pack is connected to the first end of the first switch and the first positive electrode output end of the battery management controller, and the negative electrode of the last battery pack is connected to the first end of the second switch and the first negative electrode output end of the battery management controller;
the second end of the first switch is respectively connected with the first end of the fuse and the first end of the DC/DC converter, and the second end of the second switch is respectively connected with the second end of the DC/DC converter and the first end of the shunt;
the second end of the second control switch is connected with the negative electrode of the battery system;
the second end of the fuse is connected with the first end of the first control switch and the first end of the resistor R1; the second end of the resistor R1 is connected with the first end of the third control switch; the second end of the first control switch is connected with the positive electrode of the battery system, the second positive electrode output end of the battery management controller and the second end of the third control switch; the second end of the shunt is connected with the first end of the second control switch.
Optionally, the positive electrode input end of the photovoltaic converter is respectively connected with the first end of the third switch and the positive electrode protection switch, and the second end of the third switch is connected with the positive electrode output end of the photovoltaic system;
the negative electrode input end of the photovoltaic converter is respectively connected with the first end of the fourth switch and the negative electrode protection switch, and the second end of the fourth switch is connected with the negative electrode output end of the photovoltaic system; the protection switch SPD2 is grounded.
Optionally, the energy storage converter module comprises two energy storage converters connected in parallel; the phase A, the phase B and the phase C of the first energy storage converter are respectively and electrically connected with the phase A, the phase B and the phase C of the second energy storage converter; the positive electrode and the negative electrode of the first energy storage converter are respectively and electrically connected with the positive electrode and the negative electrode of the second energy storage converter;
and the phase A, the phase B and the phase C of the energy storage converter module are electrically connected with the power grid side through an isolation transformer.
As can be seen from the above, the energy storage cabinet provided by the application comprises a cabinet body and a cabinet door: the cabinet body comprises a first cabinet body and a second cabinet body which are arranged on two sides of the cabinet body, the first cabinet body is used for arranging a battery system, and the battery system comprises a plurality of battery packs; the second cabinet body is used for arranging an electric module; the electrical module at least comprises an energy storage converter module and a photovoltaic converter. According to the application, the battery system and the electrical system are integrally arranged, the material cost and the labor cost for connecting and installing the battery cabinet and the electrical cabinet separately are not considered, only each electrical installation position is arranged in one electrical cabinet, and a preset circuit is selected for connection, so that cable connection among the customized cabinet bodies is not needed, and the material cost and the installation cost can be greatly reduced. In addition, the battery system is electrically connected with the energy storage converter module and the photovoltaic converter respectively, the types of the energy storage converter module and the photovoltaic converter are changeable, and the energy storage converter module and the photovoltaic converter can be increased and reduced, so that various requirements of configuration schemes such as various power, functions, energy and the like can be realized in one cabinet.
Additional features and advantages of the application will be set forth in the description which follows, and in part will be apparent from the description, or may be learned by practice of the embodiments of the application. The objectives and other advantages of the application will be realized and attained by the structure particularly pointed out in the written description and claims thereof as well as the appended drawings.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments of the present application will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and should not be considered as limiting the scope, and other related drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a block diagram of an energy storage cabinet according to a first embodiment of the present application;
FIG. 2 is a schematic diagram of an energy storage system according to a second embodiment of the present application;
FIG. 3 is a circuit diagram of a battery system according to a third embodiment of the present application;
fig. 4 is an enlarged circuit diagram of a battery system according to a third embodiment of the present application;
FIG. 5 is a diagram of an electrical system architecture in one embodiment of the application;
FIG. 6 is a circuit diagram of an electrical design in an embodiment of the application;
FIG. 7 is a diagram illustrating an EMS function interface according to an embodiment of the application.
Reference numerals:
a cabinet body-1; a cabinet door-2; a first cabinet 11; a second cabinet-12; reserving a plug frame-13; an access control sensor-14; a smoke sensor-15; a water immersion sensor-16; high-pressure test box-17; a lightning protection module-18; an energy management system-100; an emergency off switch-19; an energy storage converter module-20; an air conditioning system-21; a fire extinguishing device-22; a photovoltaic converter-30; an isolation transformer-40; grid side-50; photovoltaic system-60.
Detailed Description
The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the application, as presented in the figures, is not intended to limit the scope of the application, as claimed, but is merely representative of selected embodiments of the application. All other embodiments, which can be made by a person skilled in the art without making any inventive effort, are intended to be within the scope of the present application.
It should be noted that like reference numerals and letters refer to like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures. Meanwhile, in the description of the present application, the terms "first", "second", and the like are used only to distinguish the description, and are not to be construed as indicating or implying relative importance.
The existing energy storage system is mainly characterized in that a battery system and an energy storage variable flow system are independently separated to carry out structural design, two sets of electric cabinets are formed, and cables are connected to complete installation and fixation during field installation. The system design needs to consider that two sets of cabinet bodies are needed when the battery cabinet and the electric cabinet are connected and installed on site, and cables with different lengths are needed to be customized between the cabinet bodies, so that the cost is increased; the floor platform on site is more in design and construction cost, the overall BOM cost and the construction labor cost are increased, so that the problem of the increase of the labor cost caused by long site installation time and the problem of the increase of the comprehensive cost caused by independent design of the structure are solved.
In addition, the energy storage system applied in the industrial and commercial fields needs to be subjected to different configuration schemes to solve the customer demands due to the fact that different application scenes and customer load power are needed to be considered, such as inverter power configuration, photovoltaic configuration, oil machine selection and allocation, different demands of electric quantity and the like. Different configurations form different product types, and meanwhile, development cost is increased, so that mass production cannot be truly realized.
According to the energy storage cabinet provided by the application, the battery system and the electrical system are integrally arranged, so that the material cost and the labor cost for connecting and installing the battery cabinet and the electrical cabinet separately are not required to be considered, only the electrical installation positions are arranged in one electrical cabinet, and the preset circuits are selected for connection, so that the cable connection between the cabinet bodies is not required to be customized, and the material cost and the installation cost can be greatly reduced. In addition, the battery system is electrically connected with the energy storage converter module and the photovoltaic converter respectively, the types of the energy storage converter module and the photovoltaic converter are changeable, and the energy storage converter module and the photovoltaic converter can be increased and reduced, so that various requirements of configuration schemes such as various power, functions, energy and the like can be realized in one cabinet.
Referring to fig. 1, a block diagram of an energy storage cabinet according to some embodiments of the application is shown. The energy storage cabinet is used in industrial and commercial energy storage systems. The energy storage cabinet comprises a cabinet body 1 and a cabinet door 2:
the cabinet body 1 comprises a first cabinet body 11 and a second cabinet body 12 which are arranged on two sides of the cabinet body 1;
the first cabinet 11 is used for setting a battery system 10, and the battery system 10 comprises a plurality of battery packs;
the second cabinet 12 is used for setting an electrical module; the electrical module comprises at least an energy storage converter module 20 and a photovoltaic converter 30;
the battery system 10 is electrically connected to the energy storage converter module 20 and the photovoltaic converter 30, respectively.
The cabinet body 1 is integrally designed by a battery system 10 and an electric module, and can be divided into a first cabinet body 11 and a second cabinet body 12 which are two side cabinet bodies; the first cabinet 11 may be used to provide the battery system 10, and the battery system 10 may include a plurality of battery packs therein. Specifically, the first cabinet 11 may be designed to sequentially design a plurality of battery pack insertion frames side by side from top to bottom according to the size of the battery pack. When the battery pack needs to be installed, the battery pack is directly inserted into the battery pack inserting frame, and the proper battery pack inserting frame can be reserved for increasing or decreasing the corresponding battery pack. And the structure of frame is inserted to the battery package is unanimous, for example, can insert the frame with a plurality of battery packages and three-dimensional alignment sets up for after the battery package is installed, the front surface of battery package all level sets up, thereby can connect gradually the positive pole negative pole on the front surface of battery package through, makes the battery package establish ties and sets up, and can reduce the space loss of energy storage cabinet.
The second cabinet 12 may be used to house an electrical module, wherein the electrical module includes at least an energy storage converter module 20 and a photovoltaic converter 30; the second cabinet body 12 can be provided with a plurality of plug frames for placing the electric appliance modules, and the plug frames of the electric appliance modules can be all set to be of a uniform shape structure, so that the energy storage converters 20 and the photovoltaic converters 30 of the same model can be added or reduced at the plug frames, namely, the shape structure of the photovoltaic converters 30 can be the same as the shape structure of the energy storage converters 20, and therefore, the requirement configuration schemes of various power, functions, energy and the like can be matched. Specifically, the insert frames of the electrical appliance modules can be sequentially arranged from top to bottom in a parallel manner, when the energy storage converter 20 and the photovoltaic converter 30 need to be increased or decreased, the corresponding energy storage converter 20 and photovoltaic converter 30 only need to be extracted from the insert frames, and the connection of the energy storage converter modules is completed through internal wiring, or the battery system 10 is connected with the energy storage converter 20 modules and the photovoltaic converter 30. Of course, the electrical module may also be another converter module, such as a photo-thermal converter or a wind power converter.
In addition, in the present application, the battery system 10, the energy storage converter module 20 and the photovoltaic converter 30 are connected through the built-in wiring, that is, the battery system 10 can be electrically connected with the energy storage converter module 20 and the photovoltaic converter 30 respectively only by placing the battery pack, the energy storage converter and the photovoltaic converter 30 in the corresponding plug frames and connecting the built-in wiring, so that the electrical connection of the energy storage system is completed.
According to the energy storage cabinet provided by the application, the battery system 10 and the electrical system are integrally arranged, so that the material cost and the labor cost for connecting and installing the battery cabinet and the electrical cabinet separately are not considered, only the installation position of each electrical is arranged in one electrical cabinet, and the preset circuit is selected for connection, so that the cable connection between the cabinet bodies is not needed to be customized, and the material cost and the installation cost can be greatly reduced. In addition, the battery system is electrically connected with the energy storage converter module and the photovoltaic converter respectively, the types of the energy storage converter module and the photovoltaic converter are changeable, and the energy storage converter module and the photovoltaic converter can be increased and reduced, so that various requirements of configuration schemes such as various power, functions, energy and the like can be realized in one cabinet.
In addition, in a specific embodiment, the application further provides a plurality of reserved inserting frames 13 in the first cabinet 11 or the second cabinet 12, which can be used for installing the PCS energy storage converter 20, the photovoltaic converter 30, the DCDC conversion module, the STS or the ATS control module (Automatic transfer switching equipment, the automatic transfer switch; static Transfer Switch, the static transfer switch).
Specifically, in fig. 1, 6 insert frames are arranged above the battery pack, wherein two insert frames sealed by sheet metal are included to be reserved; three insert frames are reserved above the energy storage converter 20, and then if a power module needs to be added, the corresponding power adding module can be inserted into the insert frames.
In a specific embodiment, at least one of the door control sensor and the smoke sensor is further arranged on the inner wall of the first cabinet 11 or the second cabinet 12; the lower extension of the first cabinet body or the second cabinet body is also provided with a water immersion sensor.
Wherein, the inner wall of the first cabinet 11 or the second cabinet 12 can be provided with an access control sensor 14 and a smoke sensor 15, which are respectively used for opening the door of a person, and the access control sensor 14 detects corresponding information, thereby triggering an access control alarm, and at the moment, a buzzer alarm and a system stop can be performed to avoid the electric shock of the person, and the alarm can be released manually; when the smoke sensor 15 receives the smoke signal, it triggers a smoke alarm, the system is stopped directly, and all high voltages (ac side, dc side) are disconnected, and the alarm requires manual maintenance and is allowed to run after a delay of 10 min. The lower extension of the first cabinet 11 or the second cabinet 12 is also provided with a water logging sensor 16, when the water logging sensor detects that water is in the lower edge of the cabinet, the system is also directly stopped after triggering a water logging alarm, all high voltages (alternating current side and direct current side) are disconnected, and the alarm is allowed to be electrified to run after manual maintenance and overhaul and delay for 10 min.
Specifically, as shown in fig. 1, a smoke sensor 15 is arranged at the upper edge of a first cabinet 11, an access control sensor 14 is arranged at the upper edge of a second cabinet, and a water immersion sensor 16 is arranged at the lower edge of a second cabinet 12, so that an alarm signal can be sent out in time after corresponding signals are sent out.
In a specific embodiment, a high-voltage test box 17 is further arranged below the battery pack in the first cabinet 11; a lightning protection module 18 is disposed in the second cabinet 12. Specifically, the high-voltage control box 17 is disposed below the battery pack in the first cabinet 11 in fig. 1; specifically, the high voltage control box 17 is the QF5 switching device in fig. 6; the lightning protection module 18 may be disposed below the energy storage converter module 20 and the photovoltaic converter 30 in the second cabinet 12 of fig. 1; in particular, the lightning protection module 18 is the SPD1 and SPD2 device of FIG. 6.
In a specific embodiment, the cabinet door 2 is provided with an energy management system 100, an emergency shutdown switch 19, an air conditioning system 21, and a fire extinguishing device. 22
It should be noted that, the cabinet door 2 of the present application may be a single door or a double door; when the cabinet door 2 is arranged as a single door, one side of the cabinet door 2 is rotationally connected with one side of the cabinet body 2, and the size and shape of the front sides of the cabinet door 2 and the cabinet body 1 are consistent; when the cabinet door 2 is arranged as a double door, the cabinet doors on two sides are respectively connected with two sides of the cabinet body 2 in a rotating way, and the cabinet door 1 close to the first cabinet body 11 is consistent with the front of the first cabinet body 11 in size and shape; the cabinet door 1 close to the second cabinet body 12 is consistent with the front side of the second cabinet body 12 in size and shape.
In addition, the air conditioning system 21 may be disposed on the cabinet door 2 opposite to the battery pack, and when the temperature sensor in the battery system 10 uploads the real-time battery temperature information to the energy management system 100EMS, the energy management system 100EMS controls the air conditioner to adjust the air outlet of the battery system 10 in real time, and refrigerates or heats the air outlet, thereby realizing the control of the battery temperature, and ensuring that the battery pack works in a proper temperature. Of course, the air conditioning system 21 may also be configured to evenly distribute the air output according to the placement positions of other modules and the size of the air outlet from top to bottom of the air channel. The energy management system 100, the emergency shutdown switch 19 may also be disposed in the cabinet 1.
The fire extinguishing device 22 may be mounted on the cabinet door 2, and when a fire is detected, the fire extinguishing device 22 may be controlled to initiate a fire extinguishing action. In particular, the fire suppression device 22 may be a fire suppression aerosol.
In a specific embodiment, the energy management system 100 is electrically connected to the emergency shutdown switch 19, the air conditioning system 21, the fire suppression device 22, the access control sensor 14, the smoke sensor 15, and the water immersion sensor 16, respectively; for performing corresponding alarm measures upon receiving alarm signals transmitted from the emergency shutdown switch 19, the air conditioning system 21, the fire extinguishing device 22, the entrance guard sensor 14, the smoke sensor 15 and the water immersion sensor 16.
The energy management system 100 is electrically connected with the emergency shutdown switch 19, the air conditioning system 21, the fire extinguishing device 22, the entrance guard sensor 14, the smoke sensor 15 and the water immersion sensor 16, and is used for receiving a fire-fighting signal in the energy storage cabinet, generating an alarm, and controlling corresponding fire-fighting devices to take corresponding measures at the same time, so as to avoid corresponding fire-fighting safety problems. And is also in communication connection with the energy storage converter module 20 and the battery system 10 for controlling the turn-off of the energy storage converter module 20 and the battery system 10.
For example, when the emergency shutdown switch 19EPO receives the emergency shutdown signal, the emergency shutdown switch 19 sends the signal to the energy management system 100, and the energy management system 100 sends the signal to the energy storage converter module 20 and the battery system 10 through communication after receiving the signal, so as to disconnect the high voltage power.
In a specific embodiment, the present application further includes a display module communicatively connected to the energy management system 100, where the display module may display the alarm information and the current working state in the energy storage system, so that the working mode of the energy storage system may be modified by the staff according to the needs and the current working state. The display module can be arranged on the outer side of the cabinet door, namely when the cabinet door is closed, a worker can check the alarm information and the current working state through checking the display module on the cabinet door, and the display module can be a touch control screen. Of course, the display module may also be remotely connected to the energy management system 100 in a communication manner, so as to facilitate remote operation by a worker.
Fig. 2 is a schematic diagram of an energy storage system according to some embodiments of the application. The energy storage system includes:
a battery system 10, and an energy storage converter module 20 and a photovoltaic converter 30 electrically connected to the battery system 10;
the positive output end of the photovoltaic converter 30 is respectively connected with the positive electrode of the energy storage converter module 20 and the positive electrode of the battery system 10, and the negative output end of the photovoltaic converter 30 is respectively connected with the negative electrode of the energy storage converter module 20 and the negative electrode of the battery system 10.
It should be noted that the present application includes a battery system 10, and an energy storage converter module 20 and a photovoltaic converter 30 electrically connected to the battery system 10; the positive output end of the photovoltaic converter 30 is connected to the positive electrode of the energy storage converter module 20 and the positive electrode of the battery system 10, and the negative output end of the photovoltaic converter 30 is connected to the negative electrode of the energy storage converter module 20 and the negative electrode of the battery system 10.
Specifically, referring to fig. 4, which is a circuit diagram of a battery system, and fig. 5, which is an enlarged circuit diagram of a battery system, the battery system 10 includes a plurality of groups of battery modules connected in series, which are battery module 1, battery module 2. Wherein the positive electrode of the first battery module 12 and the first positive electrode output end of the battery management controller are connected to the first end of the first switch, and the negative electrode of the last battery module 1 is connected to the first end of the second switch and the first negative electrode output end of the battery management controller; the second end of the first switch is respectively connected with the first end of the fuse and the first end of the DC/DC converter, and the second end of the second switch is respectively connected with the second end of the DC/DC converter and the first end of the shunt; the second end of the second control switch is connected with the negative electrode of the battery system; the second end of the fuse is connected with the first end of the first control switch and the first end of the resistor R1; the second end of the resistor R1 is connected with the first end of the third control switch; the second end of the first control switch is connected with the positive electrode of the battery system, the second positive electrode output end of the battery management controller and the second end of the third control switch; the second end of the shunt is connected with the first end of the second control switch. The specific first switch and the second switch can be on-off switch, such as QF5 in FIG. 3.
In a specific embodiment, the positive input end of the photovoltaic converter 30 is connected to the first end of the third switch and the positive protection switch, respectively, and the second end of the third switch is connected to the positive output end of the photovoltaic system; the negative electrode input end of the photovoltaic converter 30 is respectively connected with the first end of the fourth switch and the negative electrode protection switch, and the second end of the fourth switch is connected with the negative electrode output end of the photovoltaic system; the protection switch is grounded.
The input end of the photovoltaic converter 30 needs to be connected to the photovoltaic system 60, and the photovoltaic system 60 generates power by photovoltaic power and inputs the power to the battery system 10 for storage through the photovoltaic converter 30. In addition, the energy storage converter module 20 can transmit the electric energy to the grid side 50 through the isolation transformer 40. Referring specifically to the electrical system architecture diagram in fig. 4.
The connection manner of the photovoltaic converter 30 and the photovoltaic system 60 may be that the positive output end of the photovoltaic converter 30 is respectively connected with the positive electrode of the energy storage converter module 20 and the positive electrode of the battery system 10, and the negative output end of the photovoltaic converter 30 is connected with the negative electrode of the energy storage converter module 20 and the negative electrode of the battery system 10.
The positive electrode input end of the photovoltaic converter 30 is respectively connected with the first end of the positive electrode switch QF4 and the positive electrode protection switch SPD2, and the second end of the positive electrode switch QF4 is connected with the positive electrode output end of the photovoltaic system 30; the negative electrode input end of the photovoltaic converter 30 is respectively connected with the first end of the negative electrode switch QF4 and the negative electrode protection switch SPD2, and the second end of the negative electrode switch QF4 is connected with the negative electrode output end of the photovoltaic system 30; the protection switch SPD2 is grounded, as shown in particular in the electrical design circuit diagram of fig. 6.
In a specific embodiment, the energy storage converter module 20 includes two energy storage converters connected in parallel; the phase A, the phase B and the phase C of the first energy storage converter are respectively and electrically connected with the phase A, the phase B and the phase C of the second energy storage converter; the positive electrode and the negative electrode of the first energy storage converter are respectively and electrically connected with the positive electrode and the negative electrode of the second energy storage converter;
and the phase A, the phase B and the phase C of the energy storage converter module are electrically connected with the power grid side through an isolation transformer.
The energy storage converter module 20 comprises two energy storage converters connected in parallel, wherein the A phase, the B phase and the C phase of the first energy storage converter are respectively connected with the A phase, the B phase and the C phase of the second energy storage converter; the positive electrode and the negative electrode of the first energy storage converter are respectively connected with the positive electrode and the negative electrode of the second energy storage converter, and the electric design circuit diagram is shown in fig. 6.
In particular, the specific connection between the energy storage converter module 20 and the isolation transformer 40 and the grid side 50 can be referred to fig. 6. The phase A, the phase B and the phase C of the energy storage converter are respectively connected with the phase A, the phase B and the phase C of the first side of the isolation transformer 40, the phase A, the phase B and the phase C of the second side of the isolation transformer 40 can be respectively connected, and three phases on the power grid side are connected with the first end of the on-off control switch KM and the third control switch QF3 on the load side; the second ends of the three-phase on-off control switch KM at the power grid side are respectively connected with a first control switch QF1 at the oil machine side and a second control switch QF2 at the power grid side.
It should be noted that the battery management system 100 is also connected to the battery system 10, the photovoltaic system 60, and the switch in the grid side 50, respectively. For example, a first control switch QF1 connected with the oil engine, a second control switch QF2 connected with the power grid side and a third control switch QF3 connected with the load side can be controlled respectively, so that four application modes of grid connection, off-grid switching and oil engine reversing are realized. The grid-connected mode is that a commercial power breaker is turned on, and the grid-connected mode is set on the LCD display module; the off-grid mode connects the Load to the Load port, opens the third control switch QF3 at the Load side and sets the off-grid mode; the off-grid switching is performed to isolate the commercial power from the energy storage system through the control switch KM in fig. 1, and when the commercial power is lost, the commercial power is switched from a grid-connected mode to an off-grid mode; the oil machine reverse mode is to close a first control switch QF1 at the oil machine side, charge a battery in the energy storage system by using the oil machine, and then open a third control switch QF3 at the load side to discharge the load by using the energy storage system. The battery management system can be connected with the display screen and used for displaying various EMS functions, such as grid connection, off-grid switching and oil engine reversing four application modes, so that a worker can complete regulation and control of various modes, and current alarm information can be displayed. A schematic diagram of a specific EMS function is shown in fig. 7.
In a specific embodiment, the battery system 10 of the present application can employ 64V/280Ah battery modules in 12 series to form a 215kWh battery cluster; the alternating-current side uses two 50kW energy storage converters PCS to perform inversion/rectification, and meanwhile, the two 50kW energy storage converters PCS are matched with a 50kW photovoltaic converter 30MPPT module to perform photovoltaic access; the system is also provided with a 400:400 isolation transformer 40, which can meet the adaptation of various application scenes and loads; as a change-over switch, two modules of ATS and STS can be selected according to the requirement of 0mS switching.
According to the energy storage system provided by the application, the battery system and the electric system are integrally arranged, so that the material cost and the labor cost for connecting and installing the battery cabinet and the electric cabinet separately are not required to be considered, only the electric installation positions are arranged in one electric cabinet, and the preset circuits are selected for connection, so that the cable connection between the customized cabinet bodies is not required, and the material cost and the installation cost can be greatly reduced. In addition, the battery system is electrically connected with the energy storage converter module and the photovoltaic converter respectively, the types of the energy storage converter module and the photovoltaic converter are changeable, and the energy storage converter module and the photovoltaic converter can be increased and reduced, so that various requirements of configuration schemes such as various power, functions, energy and the like can be realized in one cabinet.
In the several embodiments provided by the present application, it should be understood that the disclosed apparatus and method may be implemented in other ways. The above described device embodiments are only illustrative, e.g. the division of the units is only one logical function division, and there may be other divisions in practice, such as: multiple units or components may be combined or may be integrated into another system, or some features may be omitted, or not performed. In addition, the various components shown or discussed may be coupled or directly coupled or communicatively coupled to each other via some interface, whether indirectly coupled or communicatively coupled to devices or units, whether electrically, mechanically, or otherwise.
The units described above as separate components may or may not be physically separate, and components shown as units may or may not be physical units; can be located in one place or distributed to a plurality of network units; some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
In addition, each functional unit in each embodiment of the present application may be integrated in one processing unit, or each unit may be separately used as one unit, or two or more units may be integrated in one unit; the integrated units may be implemented in hardware or in hardware plus software functional units.
Those of ordinary skill in the art will appreciate that: all or part of the steps for implementing the above method embodiments may be implemented by hardware related to program instructions, and the foregoing program may be stored in a readable storage medium, where the program, when executed, performs steps including the above method embodiments; and the aforementioned storage medium includes: a mobile storage device, a Read-Only Memory (ROM), a random access Memory (RAM, random Access Memory), a magnetic disk or an optical disk, or the like, which can store program codes.
Alternatively, the above-described integrated units of the present application may be stored in a readable storage medium if implemented in the form of software functional modules and sold or used as separate products. Based on such understanding, the technical solution of the embodiments of the present application may be embodied in essence or a part contributing to the prior art in the form of a software product stored in a storage medium, including several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the methods described in the embodiments of the present application. And the aforementioned storage medium includes: a removable storage device, ROM, RAM, magnetic or optical disk, or other medium capable of storing program code.
Claims (10)
1. An energy storage cabinet, comprising: cabinet body and cabinet door:
the cabinet body comprises a first cabinet body and a second cabinet body which are arranged on two sides of the cabinet body;
the first cabinet body is used for arranging a battery system, and the battery system comprises a plurality of battery packs;
the second cabinet body is used for arranging an electric module; the electrical module at least comprises an energy storage converter module and a photovoltaic converter;
the battery system is electrically connected with the energy storage converter module and the photovoltaic converter respectively.
2. The energy storage cabinet of claim 1, wherein the first cabinet body or the second cabinet body is further configured to provide a plurality of reserved plug frames.
3. The energy storage cabinet according to claim 1, wherein at least one of an access control sensor and a smoke sensor is arranged on the inner wall of the first cabinet body or the second cabinet body in a extending manner; the lower extension of the first cabinet body or the second cabinet body is also provided with a water immersion sensor.
4. The energy storage cabinet of claim 1, wherein a high voltage test box is further arranged below the battery pack in the first cabinet body; and a lightning protection module is arranged in the second cabinet body.
5. The energy storage cabinet according to claim 1, wherein the cabinet door is provided with an energy management system, an emergency shutdown switch, an air conditioning system and a fire extinguishing device.
6. The energy storage cabinet of claim 5, wherein the energy management system is electrically connected to an emergency shutdown switch, an air conditioning system, a fire suppression device, an access sensor, a smoke sensor, and a water immersion sensor, respectively; and the alarm device is used for executing corresponding alarm measures after receiving signals sent by the emergency shutdown switch, the air conditioning system, the fire extinguishing device, the access control sensor, the smoke sensor and the water immersion sensor.
7. An energy storage system, comprising: the device comprises a battery system, an energy storage converter module and a photovoltaic converter, wherein the energy storage converter module and the photovoltaic converter are electrically connected with the battery system;
the positive electrode output end of the photovoltaic converter is respectively connected with the positive electrode of the energy storage converter module and the positive electrode of the battery system, and the negative electrode output end of the photovoltaic converter is respectively connected with the negative electrode of the energy storage converter module and the negative electrode of the battery system.
8. The energy storage system of claim 7, wherein the battery system comprises a plurality of sets of battery packs in series, a battery management controller, a DC/DC converter, a fuse, and a plurality of control switches;
the positive electrode of the first battery pack is connected to the first end of the first switch and the first positive electrode output end of the battery management controller, and the negative electrode of the last battery pack is connected to the first end of the second switch and the first negative electrode output end of the battery management controller;
the second end of the first switch is respectively connected with the first end of the fuse and the first end of the DC/DC converter, and the second end of the second switch is respectively connected with the second end of the DC/DC converter and the first end of the shunt;
the second end of the second control switch is connected with the negative electrode of the battery system;
the second end of the fuse is connected with the first end of the first control switch and the first end of the resistor R1; the second end of the resistor R1 is connected with the first end of the third control switch; the second end of the first control switch is connected with the positive electrode of the battery system, the second positive electrode output end of the battery management controller and the second end of the third control switch; the second end of the shunt is connected with the first end of the second control switch.
9. The energy storage system of claim 7, wherein the positive input terminal of the photovoltaic converter is connected to the first terminal of the third switch and the positive protection switch, respectively, and the second terminal of the third switch is connected to the positive output terminal of the photovoltaic system;
the negative electrode input end of the photovoltaic converter is respectively connected with the first end of the fourth switch and the negative electrode protection switch, and the second end of the fourth switch is connected with the negative electrode output end of the photovoltaic system; the protection switch is grounded.
10. The energy storage system of claim 7, wherein the energy storage converter module comprises two energy storage converters connected in parallel; the phase A, the phase B and the phase C of the first energy storage converter are respectively and electrically connected with the phase A, the phase B and the phase C of the second energy storage converter; the positive electrode and the negative electrode of the first energy storage converter are respectively and electrically connected with the positive electrode and the negative electrode of the second energy storage converter;
and the phase A, the phase B and the phase C of the energy storage converter module are electrically connected with the power grid side through an isolation transformer.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310657101.5A CN116683314A (en) | 2023-06-05 | 2023-06-05 | Energy storage cabinet and energy storage system |
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| CN202310657101.5A CN116683314A (en) | 2023-06-05 | 2023-06-05 | Energy storage cabinet and energy storage system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116885590A (en) * | 2023-09-08 | 2023-10-13 | 江苏阿诗特能源科技股份有限公司 | Energy storage electric cabinet and operation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116885590A (en) * | 2023-09-08 | 2023-10-13 | 江苏阿诗特能源科技股份有限公司 | Energy storage electric cabinet and operation method thereof |
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