CN113346584A - Intelligent battery charging and replacing system and method supporting battery charging and replacing after power failure and storage medium - Google Patents
Intelligent battery charging and replacing system and method supporting battery charging and replacing after power failure and storage medium Download PDFInfo
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- CN113346584A CN113346584A CN202110633192.XA CN202110633192A CN113346584A CN 113346584 A CN113346584 A CN 113346584A CN 202110633192 A CN202110633192 A CN 202110633192A CN 113346584 A CN113346584 A CN 113346584A
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- 238000000034 method Methods 0.000 title claims abstract description 14
- 230000002457 bidirectional effect Effects 0.000 claims abstract description 81
- 238000007599 discharging Methods 0.000 claims abstract description 27
- 238000004891 communication Methods 0.000 claims description 36
- 238000001514 detection method Methods 0.000 claims description 24
- 238000007654 immersion Methods 0.000 claims description 11
- 239000000779 smoke Substances 0.000 claims description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 11
- 230000003993 interaction Effects 0.000 claims description 6
- 238000012545 processing Methods 0.000 claims description 6
- 238000004590 computer program Methods 0.000 claims description 3
- 238000001816 cooling Methods 0.000 claims description 2
- 230000005611 electricity Effects 0.000 claims 1
- 230000007306 turnover Effects 0.000 abstract description 6
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 10
- 229910052744 lithium Inorganic materials 0.000 description 10
- 238000012546 transfer Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0013—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries acting upon several batteries simultaneously or sequentially
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
- B60L53/80—Exchanging energy storage elements, e.g. removable batteries
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0068—Battery or charger load switching, e.g. concurrent charging and load supply
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/02—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from ac mains by converters
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- 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
- H02J7/342—The other DC source being a battery actively interacting with the first one, i.e. battery to battery charging
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
- H02J9/061—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems for DC powered loads
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
- H02J9/068—Electronic means for switching from one power supply to another power supply, e.g. to avoid parallel connection
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/72—Electric energy management in electromobility
Abstract
The invention discloses an intelligent battery charging and replacing system, a method and a storage medium for supporting the battery charging and replacing after power failure, wherein the system comprises a direct current bus, an AC-DC module, a plurality of bidirectional DC-DC modules and a main control unit, the AC-DC module is used for converting alternating current into direct current, all the bidirectional DC-DC modules are arranged in parallel through the direct current bus, and the bidirectional DC-DC modules are used for charging/discharging corresponding battery modules; the main control unit respectively adjusts the charging/discharging actions of each bidirectional DC-DC module so as to charge/discharge any battery module through alternating current when the alternating current is normally supplied, and to charge a specific battery module through discharging any battery module and utilizing the discharging electric quantity when the alternating current is powered off; according to the invention, when power failure, tripping and other conditions occur in a power grid, any battery module is discharged and the specific battery module is charged by using the discharged electric quantity, so that the charging and replacing requirements of a user are met, the use experience is effectively improved, and the turnover rate of the battery module is improved.
Description
Technical Field
The invention relates to the technical field of battery charging and replacing, in particular to an intelligent battery charging and replacing system, method and storage medium for supporting battery charging and replacing after power failure.
Background
Along with the popularization and use of lithium batteries, various two-wheeled and three-wheeled vehicle lithium battery power changing cabinets are visible everywhere at present, the power changing cabinet provides charging and power changing services, a user can place a lithium battery with lower battery power into the power changing cabinet, and the lithium battery with higher battery power can be paid to be changed for fast power changing.
However, the existing power exchange cabinet is only suitable for occasions with stable alternating current power supplies, and once the power grid has power failure, tripping and other conditions, a user cannot exchange the battery in the cabinet. Especially, when the lithium battery of the user is completely exhausted in the battery replacement peak period, the user cannot replace the battery through the battery replacement cabinet, the use experience is seriously influenced, and the turnover rate of the lithium battery is greatly reduced.
Disclosure of Invention
The invention aims to provide an intelligent battery charging and replacing system, a method and a storage medium for supporting battery charging and replacing after power failure, which can meet the battery charging and replacing requirements of users by discharging any battery module and charging a specific battery module by using discharged electric quantity when power failure, tripping and other conditions occur in a power grid, effectively improve the use experience and improve the turnover rate of the battery module.
In order to achieve the purpose, the invention discloses an intelligent battery charging and replacing system supporting battery charging and replacing after power failure, which comprises a direct current bus, an AC-DC module, a plurality of bidirectional DC-DC modules and a main control unit, wherein the AC-DC module is used for converting alternating current into direct current, the input end of the AC-DC module is used for connecting alternating current, and the output end of the AC-DC module is electrically connected with the direct current bus; one end of each bidirectional DC-DC module is electrically connected with the direct current bus, the other end of each bidirectional DC-DC module is used for being electrically connected with the corresponding battery module, all the bidirectional DC-DC modules are arranged in parallel through the direct current bus, and the bidirectional DC-DC modules are used for charging/discharging the corresponding battery modules; the main control unit is respectively in communication connection with the AC-DC module and all the bidirectional DC-DC modules to acquire first state information of the AC-DC module and second state information of all the bidirectional DC-DC modules, and respectively adjusts charging/discharging actions of all the bidirectional DC-DC modules according to the first state information of the AC-DC module and the second state information of all the bidirectional DC-DC modules so as to charge/discharge any battery module through the alternating current when the alternating current is normally supplied with power and charge a specific battery module through discharging any battery module and utilizing discharging electric quantity when the alternating current is powered off.
Preferably, the bidirectional DC-DC module is a DC-DC intelligent module, the bidirectional DC-DC module is further communicatively connected to the battery module, the bidirectional DC-DC module obtains real-time status information of the battery module, and the bidirectional DC-DC module can actively charge/discharge the corresponding battery module according to the real-time status information of the battery module.
Specifically, the battery module comprises a battery unit and a BMS unit which is in communication connection with the battery unit and is used for monitoring real-time state information of the battery unit, and the bidirectional DC-DC module is electrically connected with the battery unit and is in communication connection with the BMS unit.
Preferably, the intelligent battery charging and replacing system supporting battery charging and replacing after power failure further comprises a fire fighting unit in communication connection with the main control unit, and the main control unit cools and extinguishes the battery module according to the real-time state information of the battery unit.
Preferably, the intelligent power charging and replacing system supporting power charging and replacing after power failure further comprises an intelligent electric meter in communication connection with the main control unit, the AC-DC module is connected to the alternating current through the intelligent electric meter, the intelligent electric meter is used for detecting input voltage, active power, reactive power, frequency and/or power consumption of the AC-DC module, and the intelligent electric meter sends the input voltage, the active power, the reactive power, the frequency and/or the power consumption of the AC-DC module to the main control unit in real time.
Preferably, the intelligent battery charging and replacing system supporting battery charging and replacing after power failure further comprises a human-computer interaction module in communication connection with the main control unit, and the human-computer interaction module is used for inputting a control instruction and displaying the first state information and the second state information.
Preferably, the intelligent battery charging and replacing system supporting battery charging and replacing after power failure further comprises a smoke detection module, a water immersion detection module, a vibration detection module and a communication module, wherein the smoke detection module, the water immersion detection module, the vibration detection module and the communication module are respectively in communication connection with the main control unit, the smoke detection module is used for detecting smoke concentration, the water immersion detection module is used for detecting water immersion depth, and the vibration detection module is used for detecting vibration strength; the communication module comprises a 4G communication unit, a 5G communication unit, a router unit and/or a Bluetooth communication unit, and the master control unit is in wireless communication with external equipment through the communication module.
Correspondingly, the invention also discloses an intelligent battery charging and replacing method for supporting battery charging and replacing after power failure, which is applied to the intelligent battery charging and replacing system for supporting battery charging and replacing after power failure, and comprises the following steps:
s1, the main control unit acquires first state information of the AC-DC module and second state information of all bidirectional DC-DC modules in real time;
s2, the main control unit judges the power supply state of the alternating current according to the first state information of the AC-DC module;
s3, if the alternating current is normally supplied, the main control unit charges/discharges any battery module through the alternating current according to the second state information of all the bidirectional DC-DC modules;
and S4, if the alternating current is powered off, the main control unit discharges any battery module and charges a specific battery module by using the discharged electric quantity according to the second state information of all the bidirectional DC-DC modules.
Specifically, the second state information includes battery power of a battery module electrically connected to the current bidirectional DC-DC module, and in step S4, the main control unit discharges any battery module according to the second state information of all bidirectional DC-DC modules and charges a specific battery module with the discharged power, specifically including:
s41, arranging the electric quantity of all batteries from large to small by the main control unit;
and S42, the main control unit controls the bidirectional DC-DC module corresponding to the battery module except the battery module with the largest electric quantity to discharge the corresponding battery module, and controls the bidirectional DC-DC module corresponding to the battery module with the largest electric quantity to charge the corresponding battery module, so that the battery electric quantity of the battery module except the battery module with the largest electric quantity is transferred to the battery module with the largest electric quantity.
Correspondingly, the invention also discloses a storage medium for storing a computer program, and the program realizes the intelligent battery charging and replacing method for supporting the battery charging and replacing after the power failure when being executed by the processor.
Compared with the prior art, the main control unit of the invention is respectively connected with the AC-DC module and all the bidirectional DC-DC modules in a communication way to acquire the first state information of the AC-DC module and the second state information of all the bidirectional DC-DC modules, the main control unit respectively adjusts the charging/discharging action of each bidirectional DC-DC module according to the first state information of the AC-DC module and the second state information of all the bidirectional DC-DC modules so as to charge/discharge any battery module through alternating current when the alternating current is normally supplied, and charge a specific battery module through discharging any battery module and utilizing the discharging electric quantity when the alternating current is powered off, and controls the charging/discharging action of each bidirectional DC-DC module through detecting the state information of the AC-DC module and all the bidirectional DC-DC modules, can take place when situations such as power failure, tripping operation, through right wantonly battery module discharges and utilizes the electric quantity of discharging to specific battery module charges to satisfy user's the demand of trading of charging, effectively improve and use experience and promote battery module's turnover rate.
Drawings
Fig. 1 is a schematic structural diagram of an intelligent battery charging and swapping system supporting battery charging and swapping after power failure according to the present invention;
FIG. 2 is a schematic diagram of the power transfer of FIG. 1 with normal AC power;
FIG. 3 is a schematic diagram of the power transfer of FIG. 1 when AC power is off;
fig. 4 is a flowchart of an intelligent battery charging and swapping method for supporting battery charging and swapping after power failure according to the present invention.
Detailed Description
In order to explain technical contents, structural features, and objects and effects of the present invention in detail, the following detailed description is given with reference to the accompanying drawings in conjunction with the embodiments.
Referring to fig. 1, the intelligent battery charging and replacing system supporting battery charging and replacing after power failure in this embodiment is suitable for transferring part of battery power of a lithium battery to a specific lithium battery when a power grid has power failure, trip, or the like, so as to intensively charge the specific lithium battery, thereby meeting the battery charging and replacing requirements of users, effectively improving the use experience, and increasing the turnover rate of the battery module 1.
The intelligent power charging and switching system supporting power charging and switching after power failure comprises a direct current bus 10, an AC-DC module 20, a plurality of bidirectional DC-DC modules 30 and a main control unit 40, wherein the AC-DC module 20 is used for converting alternating current into direct current, the input end of the AC-DC module 20 is used for receiving alternating current, and the output end of the AC-DC module is electrically connected with the direct current bus 10. Specifically, the input of the AC-DC module 20 inputs AC power by being connected to the grid. The power grid is specifically a commercial power, and the AC-DC module 20 converts the alternating current into the direct current and outputs the direct current to the direct current bus 10, so that the direct current bus 10 has a constant direct current voltage, so that the bidirectional DC-DC module 30 can charge the battery module 1 with the constant direct current voltage.
Referring to fig. 1 to 3, one end of each bidirectional DC-DC module 30 is electrically connected to the DC bus 10, and the other end is used for electrically connecting to the corresponding battery module 1, all the bidirectional DC-DC modules 30 are arranged in parallel through the DC bus 10, and the bidirectional DC-DC modules 30 are used for charging/discharging the corresponding battery module 1. The present embodiment shows four sets of connection combinations of the bidirectional DC-DC module 30 and the battery module 1, and of course, the number of the connection combinations of the bidirectional DC-DC module 30 and the battery module 1 may be selected according to actual requirements, and is not limited herein.
Specifically, the battery module 1 includes a battery cell 101 and a BMS unit 102 communicatively connected to the battery cell 101, the BMS unit 102 being configured to monitor real-time status information of the battery cell 101, and the bi-directional DC-DC module 30 being electrically connected to the battery cell 101 and communicatively connected to the BMS unit 102. The battery cell 101 here is embodied as a lithium battery.
Preferably, the bidirectional DC-DC module 30 is a DC-DC intelligent module, the bidirectional DC-DC module 30 is further communicatively connected to the battery module 1, specifically, the bidirectional DC-DC module 30 is communicatively connected to the BMS unit 102 of the corresponding battery module 1 to obtain the real-time status information of the battery module 1, and the bidirectional DC-DC module 30 can actively charge/discharge the corresponding battery module 1 according to the real-time status information of the battery module 1. It can be understood that the DC-DC intelligent module has a processing chip therein, and the processing chip can not only actively charge/discharge the corresponding battery module 1 according to the real-time status information of the battery module 1, but also actively acquire information of the battery module 1 and send the information to the main control unit 40.
The main control unit 40 is communicatively connected to the AC-DC modules 20 and all the bidirectional DC-DC modules 30, respectively, to obtain first state information of the AC-DC modules 20 and second state information of all the bidirectional DC-DC modules 30, and the main control unit 40 adjusts charging/discharging operations of each bidirectional DC-DC module 30, respectively, according to the first state information of the AC-DC modules 20 and the second state information of all the bidirectional DC-DC modules 30, to charge/discharge any battery module 1 by AC power as shown in fig. 1 when the AC power is normally supplied, and to charge a specific battery module 1 by discharging any battery module 1 and using the discharged power as shown in fig. 2 when the AC power is cut off. It should be noted that fig. 1 is a schematic diagram illustrating the power transfer for charging all the battery modules 1, and fig. 2 is a schematic diagram illustrating the power transfer for discharging the second, third and fourth battery modules 1 and charging the first battery module 1 with the discharged power.
It can be understood that, when the alternating current is normally supplied, and the bidirectional DC-DC module 30 discharges the corresponding battery module 1, the discharged electric quantity of the battery module 1 may be transferred to the direct current bus 10 to charge other battery modules 1, or the discharged electric quantity of the battery module 1 may be consumed by a load resistor built in the bidirectional DC-DC module 30. When the alternating current is interrupted, and the bidirectional DC-DC module 30 discharges the corresponding battery module 1, the discharge electric quantity of the battery module 1 is transferred to the direct current bus 10 to charge the specific battery module 1, so that the reverse discharge of some battery modules 1 is realized to charge the specific battery module 1.
Preferably, the intelligent battery charging and replacing system supporting battery charging and replacing after power failure further comprises a fire protection unit 50, an intelligent electric meter 60, a man-machine interaction module 70, a smoke detection module 80, a water immersion detection module 90, a vibration detection module 100 and a communication module 110 which are respectively in communication connection with the main control unit 40, wherein the main control unit 40 performs cooling and fire extinguishing processing on the battery module 1 according to the real-time state information of the battery unit 101.
The AC-DC module 20 is connected to AC power through the smart meter 60, the smart meter 60 is configured to detect input voltage, active power, reactive power, frequency and/or power consumption of the AC-DC module 20, and the smart meter 60 transmits the input voltage, active power, reactive power, frequency and/or power consumption of the AC-DC module 20 to the main control unit 40 in real time. It can be understood that the smart meter 60 has a processing chip inside, and the processing chip can record the current flowing through the smart meter 60 to perform power consumption statistics, and can also make information records according to the change of the input alternating current, and send the recorded information to the main control unit 40.
The human-computer interaction module 70 is used for inputting a control command and displaying the first state information and the second state information.
The smoke detection module 80 is used for detecting smoke concentration, the water immersion detection module 90 is used for detecting water immersion depth, and the vibration detection module 100 is used for detecting vibration strength; the communication module 110 includes a 4G communication unit, a 5G communication unit, a router unit and/or a bluetooth communication unit, and the main control unit 40 wirelessly communicates with external devices through the communication module 110 and wirelessly communicates with other modules of the system.
Referring to fig. 1 to 4, correspondingly, the present invention also discloses an intelligent battery charging and swapping method for supporting battery charging and swapping after power failure, which is applied to the above intelligent battery charging and swapping system for supporting battery charging and swapping after power failure, and includes the following steps:
s1, the main control unit 40 obtains the first status information of the AC-DC module 20 and the second status information of all the bidirectional DC-DC modules 30 in real time.
S2, the main control unit 40 determines the power supply status of the alternating current according to the first status information of the AC-DC module 20.
The power supply state of the alternating current includes normal power supply and power failure.
S3, if the ac power is normally supplied, the main control unit 40 charges/discharges any battery module 1 through the ac power according to the second status information of all the bidirectional DC-DC modules 30.
S4, if the ac power is cut off, the main control unit 40 discharges any battery module 1 and charges a specific battery module 1 with the discharged electric quantity according to the second status information of all the bidirectional DC-DC modules 30.
Specifically, the second state information includes the battery power of the battery module 1 currently electrically connected to the bidirectional DC-DC module 30, and in step S4, the main control unit 40 discharges any battery module 1 and charges the specific battery module 1 with the discharged power according to the second state information of all bidirectional DC-DC modules 30, specifically including:
s41, the main control unit 40 ranks all battery capacities from large to small.
If the battery capacity Of each battery unit 101 is generally characterized by SOC (State Of Charge), the SOC Of each battery unit 101 ranges from 0 to 1, and when the SOC Of the battery unit 101 is 0, the battery unit 101 is in an undercharged State and needs to be charged; when the SOC of the battery cell 101 is 1, the battery cell 101 is in a full state and charging is not required.
S42, the main control unit 40 controls the bidirectional DC-DC module 30 corresponding to the battery module 1 except the battery module with the largest battery capacity to discharge the corresponding battery module 1, and controls the bidirectional DC-DC module 30 corresponding to the battery module 1 with the largest battery capacity to charge the corresponding battery module 1, so that the battery capacity of the battery module 1 except the battery module with the largest battery capacity is transferred to the battery module 1 with the largest battery capacity.
It can be understood that the main control unit 40 may define the battery modules 1 that are preferentially charged according to a certain preset interval value, for example, if the present embodiment has four battery modules 1, and the first two battery modules 1 are determined to need preferential charging, then the second two battery modules 1 need to be discharged to maintain the voltage of the dc bus 10, so as to transfer the discharged battery power of the second two battery modules 1 to the first two battery modules 1 until the first two battery modules 1 are fully charged. Of course, the number of the battery modules 1 to be charged preferentially may be one, three, four, etc., and is not limited herein.
The purpose of the above steps is to realize the battery power transfer of the battery unit 101 in the system when the power grid has power failure, trip, etc., and preferentially charge the battery unit 101 capable of being charged quickly to a full-charge state for the user to use for changing the battery, thereby satisfying the continuous charging and changing service of the user.
Correspondingly, the invention also discloses a storage medium for storing a computer program, and the program realizes the intelligent battery charging and replacing method for supporting the battery charging and replacing after the power failure when being executed by the processor.
Referring to fig. 1 to 4, the main control unit 40 of the present invention communicatively connects the AC-DC module 20 and all the bidirectional DC-DC modules 30 to obtain first state information of the AC-DC module 20 and second state information of all the bidirectional DC-DC modules 30, respectively, and the main control unit 40 adjusts charging/discharging operations of each of the bidirectional DC-DC modules 30 according to the first state information of the AC-DC module 20 and the second state information of all the bidirectional DC-DC modules 30, respectively, to charge/discharge any battery module 1 through alternating current when the alternating current is normally supplied, and to charge a specific battery module 1 through discharging any battery module 1 and using a discharged electric quantity when the alternating current is powered off, by detecting the state information of the AC-DC module 20 and all the bidirectional DC-DC modules 30, the charging/discharging actions of the bidirectional DC-DC modules 30 are controlled, and when power failure, tripping and other conditions occur in a power grid, the charging and replacing requirements of a user can be met by discharging any battery module 1 and charging the specific battery module 1 by using the discharging electric quantity, so that the use experience is effectively improved, and the turnover rate of the battery module 1 is improved.
The above disclosure is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the scope of the present invention, therefore, the present invention is not limited by the appended claims.
Claims (10)
1. The utility model provides a support to fill after having a power failure and trade intelligence of electricity and fill and trade electric system, its characterized in that includes:
a direct current bus;
the AC-DC module is used for converting alternating current into direct current, the input end of the AC-DC module is used for connecting alternating current, and the output end of the AC-DC module is electrically connected with the direct current bus;
one end of each bidirectional DC-DC module is electrically connected with the direct current bus, the other end of each bidirectional DC-DC module is used for being electrically connected with the corresponding battery module, all the bidirectional DC-DC modules are arranged in parallel through the direct current bus, and the bidirectional DC-DC modules are used for charging/discharging the corresponding battery modules;
the main control unit is respectively in communication connection with the AC-DC module and all the bidirectional DC-DC modules so as to acquire first state information of the AC-DC module and second state information of all the bidirectional DC-DC modules, and respectively adjusts charging/discharging actions of all the bidirectional DC-DC modules according to the first state information of the AC-DC module and the second state information of all the bidirectional DC-DC modules so as to charge/discharge any battery module through the alternating current when the alternating current is normally supplied with power and charge a specific battery module through discharging any battery module and utilizing discharging electric quantity when the alternating current is powered off.
2. The system as claimed in claim 1, wherein the bidirectional DC-DC module is a DC-DC intelligent module, the bidirectional DC-DC module is further communicatively connected to the battery module, the bidirectional DC-DC module obtains real-time status information of the battery module, and the bidirectional DC-DC module can actively charge/discharge the corresponding battery module according to the real-time status information of the battery module.
3. The system of claim 2, wherein the battery module comprises a battery unit and a BMS unit communicatively coupled to the battery unit, the BMS unit is configured to monitor real-time status information of the battery unit, and the bi-directional DC-DC module is electrically coupled to the battery unit and communicatively coupled to the BMS unit.
4. The intelligent battery charging and replacing system supporting battery charging and replacing after power failure as claimed in claim 3, further comprising a fire fighting unit in communication connection with the main control unit, wherein the main control unit performs cooling and fire extinguishing processing on the battery module according to the real-time state information of the battery unit.
5. The intelligent power charging and replacing system supporting power charging and replacing after power failure as claimed in claim 1, further comprising an intelligent electric meter in communication connection with the main control unit, wherein the AC-DC module is connected to the alternating current through the intelligent electric meter, the intelligent electric meter is configured to detect input voltage, active power, reactive power, frequency and/or power consumption of the AC-DC module, and the intelligent electric meter transmits the input voltage, active power, reactive power, frequency and/or power consumption of the AC-DC module to the main control unit in real time.
6. The intelligent battery charging and replacing system supporting battery charging and replacing after power failure as claimed in claim 1, further comprising a human-computer interaction module in communication connection with the main control unit, wherein the human-computer interaction module is used for inputting a control instruction and displaying the first state information and the second state information.
7. The intelligent battery charging and replacing system supporting battery charging and replacing after power failure as claimed in claim 1, further comprising a smoke detection module, a water immersion detection module, a vibration detection module and a communication module, wherein the smoke detection module, the water immersion detection module, the vibration detection module and the communication module are respectively in communication connection with the main control unit, the smoke detection module is used for detecting smoke concentration, the water immersion detection module is used for detecting water immersion depth, and the vibration detection module is used for detecting vibration intensity; the communication module comprises a 4G communication unit, a 5G communication unit, a router unit and/or a Bluetooth communication unit, and the master control unit is in wireless communication with external equipment through the communication module.
8. An intelligent battery charging and replacing method supporting battery charging and replacing after power failure is applied to the intelligent battery charging and replacing system supporting battery charging and replacing after power failure as claimed in any one of claims 1-7, and is characterized by comprising the following steps:
the method comprises the steps that a main control unit obtains first state information of an AC-DC module and second state information of all bidirectional DC-DC modules in real time;
the main control unit judges the power supply state of the alternating current according to the first state information of the AC-DC module;
if the alternating current is normally supplied, the main control unit charges/discharges any battery module through the alternating current according to second state information of all the bidirectional DC-DC modules;
and if the alternating current is powered off, the main control unit discharges any battery module and charges a specific battery module by using the discharge electric quantity according to the second state information of all the bidirectional DC-DC modules.
9. The intelligent battery charging and replacing method for supporting battery charging and replacing after power outage as claimed in claim 8, wherein the second status information includes battery power of a battery module electrically connected to the current bidirectional DC-DC module, and the main control unit discharges any battery module and charges a specific battery module with the discharged power according to the second status information of all bidirectional DC-DC modules, specifically comprising:
the main control unit arranges the electric quantity of all the batteries from large to small;
the main control unit controls the bidirectional DC-DC module corresponding to the battery module except the battery module with the maximum electric quantity to discharge the corresponding battery module, and controls the bidirectional DC-DC module corresponding to the battery module with the maximum electric quantity to charge the corresponding battery module, so that the battery electric quantity of the battery module except the battery module with the maximum electric quantity is transferred to the battery module with the maximum electric quantity.
10. A storage medium for storing a computer program, characterized in that: the program is executed by a processor to realize the intelligent battery charging and replacing method supporting battery charging and replacing after power failure according to any one of claims 1-8.
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| CN202110633192.XA CN113346584A (en) | 2021-06-07 | 2021-06-07 | Intelligent battery charging and replacing system and method supporting battery charging and replacing after power failure and storage medium |
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Cited By (1)
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| CN114248653A (en) * | 2021-12-28 | 2022-03-29 | 浙江吉智新能源汽车科技有限公司 | Power battery charging control method and system for charging and replacing power station and storage medium |
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