CN116094114A - Mobile household energy storage system - Google Patents
Mobile household energy storage system Download PDFInfo
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- CN116094114A CN116094114A CN202310092520.9A CN202310092520A CN116094114A CN 116094114 A CN116094114 A CN 116094114A CN 202310092520 A CN202310092520 A CN 202310092520A CN 116094114 A CN116094114 A CN 116094114A
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- 238000004146 energy storage Methods 0.000 title claims abstract description 36
- 238000004891 communication Methods 0.000 claims abstract description 78
- 230000004913 activation Effects 0.000 claims description 20
- 230000002035 prolonged effect Effects 0.000 description 8
- 238000010586 diagram Methods 0.000 description 4
- 238000001514 detection method Methods 0.000 description 3
- 230000010354 integration Effects 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000005059 dormancy Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
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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
- H02J7/0063—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with circuits adapted for supplying loads from the battery
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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
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
- H02J3/381—Dispersed generators
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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
- H02J7/00032—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by data exchange
- H02J7/00036—Charger exchanging data with battery
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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
- H02J7/0042—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by the mechanical construction
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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
-
- 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
- H02J7/14—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from dynamo-electric generators driven at varying speed, e.g. on vehicle
- H02J7/1423—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from dynamo-electric generators driven at varying speed, e.g. on vehicle with multiple batteries
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention discloses a mobile household energy storage system, which comprises a household PCS, a current sensor, a plurality of battery packs and a drive control board, wherein the household PCS is provided with a battery port, a power grid port, a current port and a load port, and the load port is electrically connected with the power grid port; the current sensor signal connection current port is in order to detect the input current of electric wire netting port, all group battery all are provided with the BMS board, the BMS board of different group battery is connected the battery port through corresponding output relay respectively, and connect the electric wire netting port through corresponding charging relay and charger respectively in proper order, drive control board and all output relay and charging relay drive connection, and with user PCS and all BMS board communication connection, drive control board is according to the charge state that each BMS board sent and the input current control that user PCS sent each charging relay and output relay open and shut, with the power supply mode of switching energy storage system, the extension power supply time.
Description
Technical Field
The invention relates to the technical field of power supply systems of battery packs with conversion devices, in particular to a mobile household energy storage system.
Background
The global energy crisis is continually deepening the revolution in the energy field. The household light storage integrated household energy combination mode gradually develops, and meanwhile, a movable temporary power supply mode becomes a mainstream along with the increase of camping demands of people.
The patent application with publication number CN110247413A discloses a movable integrated off-grid energy storage system, which comprises a trailer and a chassis, wherein the chassis comprises a control cabin, a battery cabin and an energy storage converter. The external power grid and the load are connected with the battery through the energy storage converter, when the external power grid supplies power, the control bin controls the battery to charge, at the moment, the energy storage converter is used for rectifying, when the energy storage converter is used for supplying power to the load, the control bin controls the battery to discharge, and at the moment, the energy storage converter is used for inverting.
Although the technical scheme can meet the temporary electricity demand, the system can only be used for battery charging or battery discharging at the same time. Therefore, when the battery of the system is exhausted, the system is required to stop supplying power and is connected to an external power grid for charging, and the power can be continuously supplied to the outside after the system is charged, so that the prior art cannot continuously supply power to the outside for a long time.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a movable household energy storage system which can continuously supply power outwards for a long time. The specific technical scheme is as follows:
there is provided a mobile household energy storage system, in a first implementable form, comprising:
the household PCS is provided with a battery port, a power grid port, a current port and a load port, wherein the load port is electrically connected with the power grid port;
the current sensor is in signal connection with the current port and is configured to detect the input current of the power grid port;
the battery packs are respectively provided with BMS plates, and the BMS plates of different battery packs are respectively connected with the battery ports through corresponding output relays and are respectively connected with the power grid ports through corresponding charging relays and chargers in sequence;
the drive control board is in drive connection with all output relays and charging relays and in communication connection with the household PCS and all BMS boards, and the drive control board is configured to control opening and closing of all the charging relays and the output relays according to the charge states sent by all the BMS boards and the input currents sent by the household PCS.
In combination with the first implementation manner, in a second implementation manner, the driving control board includes:
the driving plates are respectively connected with the corresponding output relay and the charging relay in a driving way;
and the main control board is respectively in communication connection with the BMS board of each battery pack and the household PCS, and is in communication connection with each driving board, and the main control board is configured to control the corresponding driving board to drive the corresponding charging relay and the output relay to open and close according to the charge state and the input current of each battery pack.
In combination with the second implementation manner, in a third implementation manner, the battery management system further comprises a plurality of position sensors, each position sensor is in signal connection with the main control board, and the main control board is configured to position each battery pack through different position sensors and bind corresponding positioning information with battery identification codes sent by each BMS board.
In combination with the second implementation manner, in a fourth implementation manner, the battery pack further comprises a plurality of warehouse control boards, the warehouse control boards comprise bus ports and output ports, the output ports are in communication connection with the main control board, and the bus ports of different warehouse control boards are respectively in communication connection with the BMS boards of the corresponding battery packs.
With reference to the first implementation manner, in a fifth implementation manner, the charging relay and the output relay are interlocked.
In combination with the first implementation, in a sixth implementation, the household PCS further includes a diesel generator port and a photovoltaic port.
With reference to the sixth implementation manner, in a seventh implementation manner, the device further includes an interface panel, where the interface panel is provided with:
a load socket electrically connected with the load port;
the comprehensive socket is electrically connected with the load port, the power grid port and the diesel generator port;
the off-grid socket is electrically connected with the load port;
the diesel generator socket is electrically connected with the diesel generator port;
and the photovoltaic socket is electrically connected with the photovoltaic port.
With reference to the seventh implementation manner, in an eighth implementation manner, the interface panel is further provided with:
the diesel generator signal interface is in signal connection with a diesel generator control port on the user PCS;
and the current sensor is connected with the current port through the current signal interface.
In combination with the first implementation manner, in a ninth implementation manner, the device further includes a temperature and humidity sensor, and the temperature and humidity sensor is in signal connection with the driving control board.
With reference to the first implementation manner, in a tenth implementation manner, an alarm is further included, and the alarm is in signal connection with the driving control board.
With reference to the first implementation manner, in an eleventh implementation manner, the battery pack is provided with a battery connection socket, and the battery connection socket includes:
communication needle jack groups, wherein each communication needle jack is internally provided with a communication needle contact piece, and the communication end of the BMS board is in communication connection with the driving control board through the communication needle jack groups;
the power pin jack groups are internally provided with power pin contact pieces, and the power ends of the BMS plates are respectively connected with the output relay and the charging relay through the power pin jack groups;
the communication needle jack and the orifice of the power needle jack are located on the same plane, and the distance between the communication needle contact and the orifice is larger than the distance between the power needle contact and the orifice.
With reference to the first implementation manner, in a twelfth implementation manner, the BMS board is configured with an activation program, and the following steps are performed when the activation program is running:
detecting the switching state of the BMS board, the voltage condition of a direct current bus electrically connected with the BMS board, and whether an activation instruction sent by a user PCS is received or not;
and when the switch state or the voltage condition of the direct current bus meets the activation condition or an activation instruction sent by a user PCS is received, the BMS board is switched to the activation state.
The beneficial effects are that: by adopting the mobile household energy storage system, whether the power grid port of the household PCS is connected with an external power grid can be detected through the set current sensor. When the grid port is not connected to an external grid, the user PCS may select a battery powered mode to supply power to the outside. The driving control board can detect the charge state of each battery pack through the set BMS board, and according to the charge state of each battery pack, an output relay connected with the battery pack, the part of which meets the power supply condition, is selected to be closed so as to supply power outwards. When the electric quantity of the battery pack for power supply is reduced, the drive control board can also control other battery packs to replace, so that the power supply time is prolonged.
When an external power grid is accessed, the user PCS can select a plurality of different power supply modes such as power grid power supply, grid-connected power supply or battery power supply and the like so as to meet different power supply scenes. When the battery power supply mode is selected, the driving control board can detect the charge state of each battery pack through the BMS board, and the output relay connected with the battery packs meeting the power supply condition is selected to be closed according to the charge state of each battery pack so as to control the battery packs to supply power outwards. Meanwhile, a charging relay connected with the battery packs which do not meet the power supply condition is controlled to be closed, so that the battery packs are charged through a charger, the battery packs which meet the power supply condition are controlled to replace the battery packs with reduced electric quantity in real time, and the power supply time is further prolonged.
Drawings
In order to more clearly illustrate the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described. Throughout the drawings, the elements or portions are not necessarily drawn to actual scale.
FIG. 1 is a schematic diagram of a system architecture of a mobile household energy storage system according to an embodiment of the present invention;
fig. 2 is a schematic diagram of a system structure of a BMS board according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a battery pack according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a battery connection socket according to an embodiment of the present invention;
reference numerals:
1-battery connection socket, 2-communication needle jack group, 3-power needle jack group, 4-guiding hole, 5-positive pole jack, 6-negative pole jack.
Detailed Description
Embodiments of the technical scheme of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for more clearly illustrating the technical aspects of the present invention, and thus are merely examples, and are not intended to limit the scope of the present invention.
A schematic system architecture of a mobile household energy storage system as shown in fig. 1, the energy storage system comprising:
the household PCS is provided with a battery port, a power grid port, a current port and a load port, wherein the load port is electrically connected with the power grid port;
the current sensor is in signal connection with the current port and is configured to detect the input current of the power grid port;
the battery packs are respectively provided with BMS plates, and the BMS plates of different battery packs are respectively connected with the battery ports through corresponding output relays and are respectively connected with the power grid ports through corresponding charging relays and chargers in sequence;
the drive control board is in drive connection with all output relays and charging relays and in communication connection with the household PCS and all BMS boards, and the drive control board is configured to control opening and closing of all the charging relays and the output relays according to the charge states sent by all the BMS boards and the input currents sent by the household PCS.
Specifically, the energy storage system consists of a user PCS, a current sensor, a plurality of battery packs and a drive control board. The household PCS comprises a battery port, a power grid port, a current port and a load port, wherein the load port is used for supplying power outwards, and the power grid port can be electrically connected with the load port and is used for connecting an external power grid. A current sensor is connected to the current port signal, and the current sensor can detect the input current of the power grid port. The user PCS can determine the input state of the power grid port through the detection signal of the current sensor so as to judge whether external current is input.
The power ends of BMS plates of each battery pack are respectively and electrically connected with the direct current buses through the normally open switches of the corresponding output relays, and are respectively and electrically connected with the output ends of different alternating current chargers through the normally open switches of the corresponding charging relays, the input ends of the alternating current chargers can be electrically connected with the power grid ports, and the direct current buses are electrically connected with the battery ports of the PCS for users.
The coil signal connection drive control board of output relay and charging relay, the drive control board is connected with the BMS board and the user PCS communication of each group battery to acquire the state of charge of group battery and the access state of external electric wire netting that each BMS board detected. And the power supply mode of the energy storage system can be switched according to the access state of an external power grid and the charge state of each battery so as to prolong the power supply time.
Specifically, when the grid port is not connected to an external grid, the user PCS may select a battery-powered mode to supply power to the outside. The drive control board may select, according to the state of charge of each battery pack, an output relay to which the battery pack, a portion of which satisfies the power supply condition, is connected, to be closed to supply power to the outside. When the electric quantity of the battery pack for power supply is reduced, the driving control board can also control the remaining battery packs meeting the power supply conditions to replace, so that the power supply time is prolonged.
When an external power grid is accessed, the user PCS can select different power supply modes such as power grid power supply, grid-connected power supply or battery power supply, when the battery power supply is selected, the drive control board can select output relays connected with battery packs meeting power supply conditions to be closed according to the charge state of each battery pack so as to control the battery packs to supply power outwards. Meanwhile, a charging relay connected with the battery packs which do not meet the power supply condition is controlled to be closed, so that the battery packs are charged through an alternating current charger, the battery packs which meet the power supply condition are controlled to replace the battery packs with reduced electric quantity in real time, and therefore the system is charged and discharged simultaneously, and the power supply time is further prolonged.
When a grid-connected power supply mode is selected, the user PCS controls each battery pack to charge and discharge according to the method, and meanwhile, the alternating current output phase of the load port can be adjusted through the input current of the power grid port, so that grid-connected output of the user PCS and an external power grid is realized, and the power consumption of the power grid is reduced.
In this embodiment, optionally, the drive control board includes:
the driving plates are respectively connected with the corresponding output relay and the charging relay in a driving way;
and the main control board is respectively in communication connection with the BMS board of each battery pack and the household PCS, and is in communication connection with each driving board, and the main control board is configured to control the corresponding driving board to drive the corresponding charging relay and the output relay to open and close according to the charge state and the input current of each battery pack.
Specifically, as shown in fig. 1, the drive control board is composed of a main control board and a plurality of drive boards. The main control board can divide all battery packs into a plurality of power supply groups to alternately supply power to the outside through the household PCS. I.e. only one power group is supplying power to the outside at the same time. Each power supply group corresponds a drive plate, the drive plate that the power supply group corresponds drive respectively connects the output relay that this group corresponds group's group connection and the coil of charging relay, all drive plates all with main control board communication connection, the BMS board and the user PCS of each group battery of main control board communication connection respectively to acquire the charge state of every group battery and the input current of electric wire netting port, the main control board can be according to the charge state of every group battery and the input current control of electric wire netting port each output relay that this power supply group corresponds and the switching of charging relay, realize the switching of power supply mode and the replacement of group battery. Moreover, the output relay and the charging relay connected with each battery pack are interlocked through software logic. The input relay and the charging relay cannot be closed at the same time, and the AC charger is prevented from directly supplying power to the user PCS.
It should be understood that the main control board may replace the battery pack corresponding to the power supply group according to the state of charge of each battery pack of the power supply group. That is, when the state of charge of one or more battery packs in the power supply pack cannot meet the power supply condition, the main control board may divide the battery packs in other power supply packs whose states of charge meet the power supply condition into the power supply packs. When all the battery packs in the power supply group can not meet the power supply condition, the main control board can replace the power supply group which is supplying power with other power supply groups meeting the power supply condition.
In this embodiment, optionally, the battery management system further includes a plurality of position sensors, each position sensor is in signal connection with the main control board, and the main control board is configured to position each battery pack through different position sensors, and bind corresponding positioning information with the battery identification codes sent by each BMS board.
Specifically, the battery pack can be provided with a battery connection socket, and the BMS board of the battery pack is in communication connection with the main control board and is electrically connected with the normally open switch of the corresponding charging relay and output relay through the battery connection socket and a battery connection plug matched with the battery connection socket. Therefore, when the state of charge of the battery pack cannot meet the power supply condition, the battery connecting socket can be pulled out from the battery connecting plug, and other battery packs meeting the power supply condition are replaced quickly, so that the power supply time of the system is further prolonged.
The battery connection plugs may be disposed at the plugging positions of the battery packs, and each of the plugging positions of the battery packs may be provided with a position sensor, which may be in signal connection with the main control board, and in this embodiment, the position sensor may be a proximity sensor. When the battery pack is inserted into the inserting position, the position sensor can send a position signal to the main control board, and the main control board can position the inserting position of the battery pack according to the received position signal, wherein the inserting position comprises a communication position and a space position. The communication port connected with the BMS board of the battery pack can be determined by the main control board through the communication position, and the position of the battery pack in space can be determined by the space position.
After the battery connection socket of the battery pack is inserted into the battery connection plug, the BMS board of the battery pack can be in communication connection with the main control board, the BMS board can send the unique binding battery identification code to the main control board, the main control board can bind the inserting position of the battery pack with the battery identification code, one-to-one correspondence between the battery pack and the output relay and the charging relay is realized, and a foundation is provided for the follow-up main control board to control the opening and closing of the output relay and the charging relay and realize the replacement and charge-discharge switching of the battery pack.
For example, when a certain battery pack in the power supply group which is being supplied with power needs to be replaced, the main control board can randomly select a battery pack from battery identification codes corresponding to all battery packs which meet the power supply condition in other power supply groups to be supplied with power, determine a communication port connected with the battery pack through the battery identification codes corresponding to the battery packs, send an activation signal to the battery pack to activate the battery pack, and send a dormancy signal to the battery pack with the charge state reduced to the state which does not meet the power supply condition to enable the battery pack to be dormant, so that replacement of the battery pack is achieved.
In this embodiment, optionally, the battery pack further includes a plurality of warehouse control boards, where the warehouse control boards include bus ports and output ports, the output ports are in communication connection with the main control board, and the bus ports of different warehouse control boards are respectively in communication connection with the BMS boards of the corresponding battery packs.
Specifically, the system also comprises a plurality of bin control boards, and 485 bus ports and 485 communication ports can be arranged on the bin control boards as output ports. The bus ports of different bin control boards are respectively connected with the BMS boards of a plurality of different battery packs through 485 communication buses, and the output ports of all bin control boards can be connected with the main control board through communication, so that the BMS boards of all battery packs are connected through communication, meanwhile, the occupation amount of the communication interface of the main control board can be reduced, and a foundation is provided for the main control board to realize communication connection with other peripheral equipment.
In this embodiment, optionally, the battery pack is provided with a battery connection socket, and the battery connection socket includes:
communication needle jack groups, wherein each communication needle jack is internally provided with a communication needle contact piece, and the communication end of the BMS board is in communication connection with the driving control board through the communication needle jack groups;
the power pin jack groups are internally provided with power pin contact pieces, and the power ends of the BMS plates are respectively connected with the output relay and the charging relay through the power pin jack groups;
the communication needle jack and the orifice of the power needle jack are located on the same plane, and the distance between the communication needle contact and the orifice is larger than the distance between the power needle contact and the orifice.
It should be understood that, as shown in fig. 2, 3, and 4, in the present embodiment, the "BMS board" may also be referred to as a "battery management system", "battery BMS system", "battery management module", and the like. The BMS board is provided with a voltage sampling interface, CAN collect the voltage of each electric core, and is also provided with a 485 interface or a CAN interface and other communication interfaces, and the communication interfaces CAN be connected with a communication needle contact of a battery connecting socket so as to be in communication connection with electric equipment through a battery connecting plug, and the collected voltage data is sent to the electric equipment.
It should also be understood that in this embodiment, the battery pack is composed of a plurality of battery cells, a BMS board and a battery connection socket, all the battery cells are sequentially connected in series to the input end of the BMS board, and the output end of the BMS board can be connected with the power pin contact of the battery connection socket so as to supply power outwards through the battery connection plug.
Specifically, the battery pack is composed of a battery connection socket 1, a BMS board, and a plurality of battery cells. Wherein, offer the power needle jack group that becomes by 3 power needle jacks that set up side by side on the seat face of battery connection socket 1 to and the communication needle jack group that becomes by 3 communication needle jack group 2. And each power pin jack is internally provided with a power pin contact piece, and each communication pin jack is internally provided with a communication pin contact piece. The power pin contact piece can be electrically connected with a power output interface on a BMS board arranged on the battery pack. The communication pin contact can be electrically connected with a communication interface on the BMS board of the battery.
The battery connecting socket 1 of the battery pack can be inserted on the battery connecting plug 7, 3 communication needles and 2 power needles can be arranged on the battery connecting plug 7, and the 3 communication needles are in communication connection with the main control board and can be inserted into 3 communication needle insertion holes to be abutted with the communication needle contact pieces, so that communication connection between the main control board and the BMS board is realized. The 2 power pins can be respectively and electrically connected with the output ends of the direct current bus and the alternating current charger through the normally open switch of the output relay and the normally open switch of the charging relay. The 2 power pins can be inserted into two adjacent power jacks to be abutted with the power pin contact pieces, so that the BMS board is electrically connected with the direct current bus and the alternating current charger.
The power pin jack group 3 comprises an anode jack 5 and two cathode jacks 6, wherein the anode jack 5 and the two cathode jacks 6 are arranged side by side, and the two cathode jacks 6 are symmetrically distributed on two sides of the anode jack 5 respectively. Specifically, the power pin jack group 3 is composed of an anode jack 5 and two cathode jacks 6, wherein power pin contact pieces in the anode jack 5 can be electrically connected with the anode output end of the BMS board, and power pin contact pieces in the two cathode jacks 6 can be electrically connected with the cathode output end of the BMS board. So, battery connecting plug not only can be with battery connecting socket 1 forward connection, battery connecting plug upset 180 degrees back moreover still can realize the power supply connection between BMS board and the consumer.
The BMS board is provided with a trigger switch, and the trigger switch can monitor whether communication with electric equipment is interrupted in real time. Because the distance between the communication needle contact piece and the orifice of the communication needle jack is greater than the distance between the power needle contact piece and the orifice of the power needle jack, when the battery connecting plug is pulled out, the communication needle on the battery connecting plug can be disconnected before the power needle, and the trigger switch can immediately trigger the BMS board to stop power supply after detecting that the communication is disconnected, so that the hot pulling of the battery is realized. In order to facilitate rapid plugging of the battery connecting socket 1, a guide hole 4 can be arranged on the battery connecting socket, and a guide post matched with the guide hole 4 can be arranged on the battery connecting plug.
In this embodiment, optionally, the BMS board is configured with an activation program, and the following steps are performed when the activation program is running:
detecting the switching state of the BMS board, the voltage condition of a direct current bus electrically connected with the BMS board, and whether an activation instruction sent by a user PCS is received or not;
and when the switch state or the voltage condition of the direct current bus meets the activation condition or an activation instruction sent by a user PCS is received, the BMS board is switched to the activation state.
Specifically, the BMS board of the battery pack can automatically detect the operating state of its own switch button, as well as the voltage of the dc bus and the received command sent by the user PCS. If the time for which the switch button is pressed is less than the set activation time threshold, the BMS board is switched into an activated state. Or, the voltage of the direct current bus is within the set voltage threshold range, the BMS board can be switched to enter the active state, or the BMS board receives an activation instruction sent by the user PCS, and the BMS board can be switched to enter the active state.
In this embodiment, optionally, as shown in fig. 1, the user PCS further includes a diesel generator port and a photovoltaic port. The household PCS is further provided with a diesel generator port and a photovoltaic port, the household PCS can be electrically connected with the diesel generator and the photovoltaic generator respectively through the diesel generator port and the photovoltaic port, electric energy generated by the diesel generator and the photovoltaic generator can be input into the household PCS through the diesel generator port and the photovoltaic port and output through the load port after being regulated through the household PCS, so that the household PCS can be charged and loaded by a battery pack of an energy storage system through the photovoltaic generator or the diesel generator under the condition of not being connected with an external power grid, and can be connected with the external power grid in a grid-connected mode, and the power supply time of the energy storage system is further prolonged.
In this embodiment, optionally, the device further includes an interface panel, where the interface panel is provided with:
a load socket electrically connected with the load port;
the comprehensive socket is electrically connected with the load port, the power grid port and the diesel generator port;
the off-grid socket is electrically connected with the load port;
the diesel generator socket is electrically connected with the diesel generator port;
and the photovoltaic socket is electrically connected with the photovoltaic port.
Specifically, the energy storage system is also provided with an interface panel, and the interface panel is provided with a load socket, a comprehensive socket, an off-grid socket, a diesel generator socket and a photovoltaic socket. The photovoltaic ports of the household PCS are electrically connected with a photovoltaic socket, which can be a 4-hole aviation plug. Therefore, the user PCS can be connected into the photovoltaic generator from the outside through 4-hole aviation plug, so that the photovoltaic generator is connected in, and the power supply time of the system is further prolonged.
The diesel generator port is electrically connected with the diesel generator socket and the comprehensive socket, the diesel generator socket can be 3-hole aviation plug, and the comprehensive socket can be 7-hole aviation plug. The household PCS can be connected to the diesel generator from the outside through the 3-hole aviation plug, so that the outdoor or household scene can be matched with the diesel generator for use, and the power supply time of the system is further prolonged.
The load ports of the consumer PCS may be electrically connected to the load jack, the integration jack, and the off-grid jack to quickly connect external load devices through the load jack, the integration jack, and the off-grid jack. In this embodiment, the load socket may be a 3-hole aerial plug, the integrated socket may be a 7-hole aerial plug, and the off-grid socket may be a 5-hole socket or a USB socket. Therefore, the load port of the user PCS can be connected with the external load through the 3-hole aviation plug, the 7-hole aviation plug, the 5-hole socket or the USB socket in a rapid power supply manner.
The power grid port of the household PCS can be electrically connected with the comprehensive socket so as to be connected with an external power grid through the comprehensive socket, and the household and off-grid scene switching can be rapidly carried out through the 7-hole aerial plug quick plug trolley. Meanwhile, because the integrated socket is also electrically connected with the load port, the grid port can also be electrically connected with the load port through the integrated socket. Therefore, after the external power grid is connected to the comprehensive socket, the external power grid can be directly used for supplying power to the load socket and external load equipment externally connected to the off-grid socket and supplying power to an alternating current charger connected to a power grid port through independent external power grids or grid connection of the external power grid and a household PCS.
In this embodiment, optionally, the interface panel is further provided with:
the diesel generator signal interface is in signal connection with a diesel generator control port on the user PCS;
and the current sensor is connected with the current port through the current signal interface.
Specifically, the household PCS is provided with a diesel engine dry contact, the diesel engine dry contact is in signal connection with a diesel engine generator signal interface on the interface panel, and the household PCS can be connected to the diesel engine generator dry contact through the diesel engine generator signal interface so as to control the diesel engine generator to work.
The household PCS current port can be connected with a current signal interface on the interface panel, and the household PCS can be connected with an external current detection sensor through the current signal interface, so that the current detection sensor can be quickly separated from the household PCS when the household PCS is off-grid, and the current sensor can be quickly connected with the household PCS when the household PCS is on-grid, thereby quickly switching the household PCS and off-grid scenes.
In this embodiment, optionally, the apparatus further includes a temperature and humidity sensor, where the temperature and humidity sensor is in signal connection with the driving control board. The main control board can detect the working temperature and the working environment humidity of the system in real time through the temperature and humidity sensor, so as to judge whether the energy storage system works normally or not and whether the working environment reaches the power supply condition or not.
In this embodiment, optionally, an alarm is further included, and the alarm is in signal connection with the drive control board. The alarm can be a voice alarm or an optical alarm and the like, the alarm is in signal connection with the main control board, and when the main control board determines that the energy storage system is abnormal and the working environment does not reach the power supply condition, the main control board can timely send an alarm signal through the alarm.
The above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention, and are intended to be included within the scope of the appended claims and description.
Claims (12)
1. A mobile household energy storage system, comprising:
the household PCS is provided with a battery port, a power grid port, a current port and a load port, wherein the load port is electrically connected with the power grid port;
the current sensor is in signal connection with the current port and is configured to detect the input current of the power grid port;
the battery packs are respectively provided with BMS plates, and the BMS plates of different battery packs are respectively connected with the battery ports through corresponding output relays and are respectively connected with the power grid ports through corresponding charging relays and chargers in sequence;
the driving control board is in driving connection with all the output relays and the charging relays and is in communication connection with the household PCS and all the BMS boards, and the driving control board is configured to control opening and closing of each charging relay and each output relay according to the charge states sent by each BMS board and the input current sent by the household PCS so as to control power supply of each battery pack.
2. The mobile household energy storage system of claim 1, wherein the drive control board comprises:
the driving plates are respectively connected with the corresponding output relay and the charging relay in a driving way;
and the main control board is respectively in communication connection with the BMS board of each battery pack and the household PCS, and is in communication connection with each driving board, and the main control board is configured to control the corresponding driving board to drive the corresponding charging relay and the output relay to open and close according to the charge state and the input current of each battery pack.
3. The mobile household energy storage system of claim 2, further comprising a plurality of position sensors, each position sensor being in signal connection with the master control board, the master control board being configured to position each battery pack through a different position sensor, and bind corresponding positioning information with battery identification codes sent by each BMS board.
4. The mobile household energy storage system of claim 2, further comprising a plurality of warehouse control boards, wherein the warehouse control boards comprise bus ports and output ports, the output ports are in communication connection with the main control board, and the bus ports of different warehouse control boards are respectively in communication connection with the BMS boards of corresponding battery packs.
5. The mobile household energy storage system of claim 1, wherein the charging relay and the output relay are interlocked.
6. The mobile household energy storage system of claim 1, wherein the household PCS further comprises a diesel generator port and a photovoltaic port.
7. The mobile household energy storage system of claim 6, further comprising an interface panel having:
a load socket electrically connected with the load port;
the comprehensive socket is electrically connected with the load port, the power grid port and the diesel generator port;
the off-grid socket is electrically connected with the load port;
the diesel generator socket is electrically connected with the diesel generator port;
and the photovoltaic socket is electrically connected with the photovoltaic port.
8. The mobile household energy storage system of claim 7, wherein the interface panel is further provided with:
the diesel generator signal interface is in signal connection with a diesel generator control port on the user PCS;
and the current sensor is connected with the current port through the current signal interface.
9. The mobile household energy storage system of claim 1, further comprising a temperature and humidity sensor in signal connection with the drive control board.
10. The mobile household energy storage system of claim 1, further comprising an alarm in signal communication with the drive control board.
11. The mobile household energy storage system of claim 1, wherein the battery pack is provided with a battery connection receptacle comprising:
communication needle jack groups, wherein each communication needle jack is internally provided with a communication needle contact piece, and the communication end of the BMS board is in communication connection with the driving control board through the communication needle jack groups;
the power pin jack groups are internally provided with power pin contact pieces, and the power ends of the BMS plates are respectively connected with the output relay and the charging relay through the power pin jack groups;
the communication needle jack and the orifice of the power needle jack are located on the same plane, and the distance between the communication needle contact and the orifice is larger than the distance between the power needle contact and the orifice.
12. The mobile household energy storage system as claimed in claim 1, wherein the BMS board is configured with an activation program, which, when operated, performs the steps of:
detecting a switching state of the BMS board, a voltage condition of a DC bus electrically connected to the BMS board, and
whether an activation instruction sent by a user PCS is received or not;
and when the switch state or the voltage condition of the direct current bus meets the activation condition or an activation instruction sent by a user PCS is received, the BMS board is switched to the activation state.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310092520.9A CN116094114A (en) | 2023-02-07 | 2023-02-07 | Mobile household energy storage system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310092520.9A CN116094114A (en) | 2023-02-07 | 2023-02-07 | Mobile household energy storage system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117394548A (en) * | 2023-12-11 | 2024-01-12 | 国网江苏综合能源服务有限公司 | High-protection type outdoor integrated liquid cooling energy storage cabinet performance monitoring and regulating system |
| CN117497889A (en) * | 2024-01-02 | 2024-02-02 | 深圳市电科电源股份有限公司 | Household battery energy storage system |
-
2023
- 2023-02-07 CN CN202310092520.9A patent/CN116094114A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117394548A (en) * | 2023-12-11 | 2024-01-12 | 国网江苏综合能源服务有限公司 | High-protection type outdoor integrated liquid cooling energy storage cabinet performance monitoring and regulating system |
| CN117394548B (en) * | 2023-12-11 | 2024-04-02 | 国网江苏综合能源服务有限公司 | High-protection type outdoor integrated liquid cooling energy storage cabinet performance monitoring and regulating system |
| CN117497889A (en) * | 2024-01-02 | 2024-02-02 | 深圳市电科电源股份有限公司 | Household battery energy storage system |
| CN117497889B (en) * | 2024-01-02 | 2024-03-19 | 深圳市电科电源股份有限公司 | Household battery energy storage system |
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Address after: Room 12-7, Unit 1, Building 2, No. 166 Xinnan Road, Liangjiang New Area, Yubei District, Chongqing, 401120 Applicant after: Chongqing Boyejing Supply Chain Management Co.,Ltd. Address before: No. 59-20, Laodong 1st Village, Jiulongpo District, Chongqing 400050 Applicant before: Chongqing Boyejing Supply Chain Management Co.,Ltd. |