CN110138021B - Integrated power supply device, system and power supply method - Google Patents
Integrated power supply device, system and power supply method Download PDFInfo
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- CN110138021B CN110138021B CN201810106101.5A CN201810106101A CN110138021B CN 110138021 B CN110138021 B CN 110138021B CN 201810106101 A CN201810106101 A CN 201810106101A CN 110138021 B CN110138021 B CN 110138021B
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- 239000003990 capacitor Substances 0.000 claims description 22
- 238000007599 discharging Methods 0.000 claims description 18
- 230000005611 electricity Effects 0.000 claims description 6
- 238000012544 monitoring process Methods 0.000 claims description 2
- 238000004146 energy storage Methods 0.000 abstract description 52
- 238000012423 maintenance Methods 0.000 abstract description 16
- 238000007726 management method Methods 0.000 description 106
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 24
- 229910052744 lithium Inorganic materials 0.000 description 20
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Classifications
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- H02J13/0003—
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0013—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries acting upon several batteries simultaneously or sequentially
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0068—Battery or charger load switching, e.g. concurrent charging and load supply
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- 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
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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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
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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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02B90/20—Smart grids as enabling technology in buildings sector
-
- 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
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/12—Energy storage units, uninterruptible power supply [UPS] systems or standby or emergency generators, e.g. in the last power distribution stages
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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
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/20—End-user application control systems
- Y04S20/248—UPS systems or standby or emergency generators
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Secondary Cells (AREA)
Abstract
The embodiment of the invention provides an integrated power supply device, an integrated power supply system and an integrated power supply method, wherein the integrated power supply device comprises a shell, a battery pack unit, a battery management and control unit, a battery charging unit and an output voltage stabilizing unit for connecting a load, wherein the battery pack unit, the battery management and control unit and the battery charging unit are arranged in the shell; the battery management and control unit, the battery charging unit and the output voltage stabilizing unit are all connected to the battery pack unit; the battery management and control unit is connected with the battery charging unit and is used for controlling the battery charging unit to charge the battery pack unit or controlling the battery pack unit to supply power to the load through the output voltage stabilizing unit. The invention can realize centralized control of the energy storage battery, effectively improve the reliability and safety of the charge and discharge process of the energy storage battery, and reduce the maintenance cost of the energy storage battery.
Description
Technical Field
The embodiment of the invention relates to the technical field of battery application, in particular to an integrated power supply device, an integrated power supply system and an integrated power supply method.
Background
The energy storage battery is one of important equipment for guaranteeing uninterrupted power supply of all equipment in a power grid, and can be applied to large-scale and large-capacity application occasions such as system peak shaving, large-scale emergency power supply, renewable energy source integration and the like.
At present, the energy storage battery is controlled by connecting a control device with the energy storage batteries in a scattered manner, so as to automatically manage the energy storage batteries in the scattered manner and control the discharge or charge of the energy storage batteries.
However, the existing mode of controlling the energy storage batteries can realize automatic control of the batteries, but due to the current situations that the energy storage batteries are distributed in the existing mode, the quantity of the energy storage batteries to be controlled is huge and the intelligent degree of the operation process is low, the problems of the maintenance time and the money cost of the energy storage batteries are greatly increased and the reliability of the power supply process of the energy storage batteries is insufficient, and the distributed power supply technology cannot be applied on a large scale are inevitably caused.
Disclosure of Invention
Aiming at the defects in the prior art, the embodiment of the invention provides an integrated power supply device, an integrated power supply system and an integrated power supply method, which can realize centralized control of energy storage batteries.
In order to solve the technical problems, the invention provides the following technical scheme:
In a first aspect, the present invention provides an integrated power supply device comprising: the battery pack comprises a shell, a battery pack unit, a battery management and control unit, a battery charging unit and an output voltage stabilizing unit, wherein the battery pack unit, the battery management and control unit, the battery charging unit and the output voltage stabilizing unit are arranged in the shell;
The battery management and control unit, the battery charging unit and the output voltage stabilizing unit are all connected to the battery pack unit;
The battery management and control unit is connected with the battery charging unit and is used for controlling the battery charging unit to charge the battery pack unit or controlling the battery pack unit to supply power to the load through the output voltage stabilizing unit.
Further, the integrated power supply device further includes: a super capacitor array;
The super capacitor array is respectively connected with the battery management and control unit, the battery charging unit and the output voltage stabilizing unit, so that when the battery pack unit cannot meet the load power supply requirement, the battery management and control unit controls the super capacitor array to supply power to the load through the output voltage stabilizing unit, and controls the battery charging unit to charge the super capacitor array.
Further, the battery pack unit includes: the battery management and control unit controls the battery charging unit to charge any number of single batteries through the battery array.
Further, the battery unit further includes: a detection subunit for detecting an operation state of each of the single batteries;
The detection subunit is connected with the battery management and control unit, so that if the battery management and control unit acquires that any number of single batteries have faults through the detection subunit, the faulty single batteries are isolated from the battery array, and if the battery management and control unit acquires that the voltage of any number of single batteries falls behind a cut-off voltage value through the detection subunit, the battery charging unit is controlled to charge any number of single batteries.
Further, the integrated power supply device further includes: a communication unit disposed in the housing and communicating with a control center;
The communication unit is respectively connected with the battery pack unit, the battery management and control unit, the battery charging unit and the output voltage stabilizing unit;
The communication unit is used for sending the running states of the battery pack unit, the battery management and control unit, the battery charging unit and the output voltage stabilizing unit to the control center.
In a second aspect, the present invention provides an integrated power supply system comprising a plurality of said integrated power supply devices;
The integrated power supply devices are connected with the output bus in parallel, and the integrated power supply devices are connected through a communication bus.
In a third aspect, the present invention provides a power supply method implemented by applying the integrated power supply device, where the power supply method includes:
the battery management and control unit detects whether the load is in a normal power supply state of the mains supply in real time;
If so, the battery management and control unit controls the battery charging unit to charge the battery pack unit according to the running state of the battery pack unit;
otherwise, the battery management and control unit controls the battery pack unit to supply power to the load through the output voltage stabilizing unit.
Further, the power supply method further includes:
the battery management and control unit controls the detection subunit to real-time control the running states of a plurality of single batteries in the battery array forming the battery pack unit;
If the battery management and control unit acquires that any number of single batteries have faults through the detection subunit, isolating the single batteries with faults from the battery array;
and if the battery management and control unit acquires that the electric quantity of any number of single batteries is lower than a preset electric quantity value through the detection subunit, controlling the battery charging unit to charge the any number of single batteries.
Further, the power supply method further includes:
In the process that the battery management and control unit controls the battery charging unit to charge the battery pack unit according to the running state of the battery pack unit, if the battery management and control unit obtains that the battery pack unit cannot meet the power supply requirement of the load through the detection subunit, the battery management and control unit controls the super capacitor array to supply power to the load through the output voltage stabilizing unit;
the super capacitor array is respectively connected with the battery management and control unit, the battery charging unit and the output voltage stabilizing unit.
Further, the battery management and control unit controls the battery pack unit to supply power to the load via the output voltage stabilizing unit, and the battery management and control unit comprises:
The battery management and control unit acquires the electricity consumption of the load and determines a minimum discharge unit according to the electricity consumption of the load;
the battery management and control unit selects a single battery corresponding to the minimum discharging unit from a plurality of single batteries in a battery array forming the battery pack unit to supply power to the load through the output voltage stabilizing unit;
the battery management and control unit marks the unselected single batteries as peak clipping and valley filling batteries or energy allocation batteries.
According to the technical scheme, the integrated power supply device is provided with the shell, the battery pack unit, the battery management and control unit, the battery charging unit and the output voltage stabilizing unit for connecting loads, wherein the battery pack unit, the battery management and control unit and the battery charging unit are all arranged in the shell; the battery management and control unit, the battery charging unit and the output voltage stabilizing unit are all connected to the battery pack unit; the battery management and control unit is connected with the battery charging unit, and is used for controlling the battery charging unit to charge the battery pack unit, or controlling the battery pack unit to supply power to the load through the output voltage stabilizing unit, centralized management and control of the energy storage battery can be achieved, reliability and safety of the charging and discharging process of the energy storage battery are effectively improved, time and money cost of maintenance of the energy storage battery are reduced, power supply efficiency of a data center, power asset utilization rate and machine room utilization rate can be improved, and power supply efficiency of the energy storage battery is further effectively improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of an integrated power supply device according to a first embodiment of the present invention;
fig. 2 is a schematic structural view of an integrated power supply device including an auxiliary power supply unit of the present invention;
FIG. 3 is a schematic diagram of an integrated power supply device incorporating a supercapacitor array according to the present invention;
FIG. 4 is a schematic diagram of the structure of an integrated power supply device incorporating a detection subunit of the present invention;
fig. 5 is a schematic structural view of an integrated power supply device including a communication unit of the present invention;
FIG. 6 is a schematic view of the structure of a housing in the integrated power supply device of the present invention;
FIG. 7 is a schematic view of the integrated power unit of the present invention installed in a cabinet;
Fig. 8 is a schematic structural view of an integrated power supply device in an application example of the present invention;
FIG. 9 is a top view of a housing in an application example of the present invention;
FIG. 10 is a schematic view of one side outer wall of the housing in an application example of the present invention;
FIG. 11 is a schematic view of the other side outer wall of the housing in an application example of the present invention;
fig. 12 is a schematic structural diagram of an integrated power supply system according to a second embodiment of the present invention;
FIG. 13 is a flow chart of an integrated power supply method according to a third embodiment of the invention;
Wherein 1-an integrated power supply device; 2-a housing; 201-a communication interface; 202-running an indicator light; 203-a buzzer; 204-a device switch; 3-battery cells; 301-single battery; 302-a battery array; 303-a detection subunit; 4-a battery management unit; a 5-battery charging unit; 6-outputting a voltage stabilizing unit; 7-an auxiliary power supply unit; 701-a supercapacitor array; an 8-communication unit; 9-a cabinet; 10-an output bus; 11-a communication bus; 12-loading; 13-control center.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
An embodiment of the present invention provides a specific implementation manner of an integrated power supply device 1, referring to fig. 1, the integrated power supply device 1 specifically includes the following:
a housing 2, a battery unit 3, a battery management unit 4, a battery charging unit 5 and an output voltage stabilizing unit 6 for connecting a load 12, which are provided in the housing 2; the battery management and control unit 4, the battery charging unit 5 and the output voltage stabilizing unit 6 are all connected to the battery pack unit 3; the battery management and control unit 4 is connected with the battery charging unit 5.
And a battery management unit 4 in the integrated power supply device 1, configured to control the battery charging unit 5 to charge the battery unit 3, or control the battery unit 3 to supply power to the load 12 via the output voltage stabilizing unit 6. It will be appreciated that the specific manner in which the battery management unit 4 controls the battery charging unit 5 to charge the battery pack unit 3 or supply power to the load 12 may be determined according to a DC bus, in one example, when the voltage of the DC output bus 10 is detected to be smaller than the corresponding bus electrical set value, the battery management unit 4 controls the battery pack unit 3 to supply power to the load 12, when the ac input is detected to be greater than the set value while the voltage of the output bus 10 is detected to be greater than or equal to the set value, the battery management unit 4 controls the battery charging unit 5 to charge the battery pack unit 3, and the execution sequence between the battery management unit 4 controlling the battery charging unit 5 to charge the battery pack unit 3 or supply power to the load 12 is simultaneously executed or alternately executed according to the actual application.
In the above description, the integrated power supply device 1 is provided with 5 types of components in total, respectively: the battery pack unit 3, the battery management unit 4, the battery charging unit 5 and the output voltage stabilizing unit 6 are arranged in the shell 2, and the specific explanation of each component is as follows:
(1) The shell 2: in the integrated power supply device 1, the battery pack unit 3, the battery management and control unit 4, the battery charging unit 5 and the output voltage stabilizing unit 6 are all arranged in the shell 2, and the arrangement modes of the battery pack unit 3, the battery management and control unit 4, the battery charging unit 5 and the output voltage stabilizing unit 6 in the shell 2 can be detachable, namely, each unit can be fixedly arranged in the shell 2 by using a clamping groove or a bolt connection and the like, and when the unit in the integrated power supply device needs to be maintained or replaced, the unit is directly taken out for maintenance or replacement without affecting other units, so that the service life and maintenance convenience of the integrated power supply device 1 can be effectively improved.
(2) Battery unit 3: the battery pack unit 3 is composed of an energy storage battery, the battery pack unit 3 is respectively connected with the battery management and control unit 4, the output voltage stabilizing unit 6 and the battery charging unit 5, and the battery pack unit 3 is used for supplying power to a load 12 outside the integrated power supply device 1 according to a control instruction of the battery management and control unit 4 or receiving the battery charging unit 5 to charge the load according to a control instruction of the battery management and control unit 4.
(3) Battery management and control unit 4: in this embodiment, the battery management and control unit 4 may include a control chip for managing and controlling the battery, and the control chip may be an existing battery management chip, and the types of the battery management chip may be HIP6301, IS6537, RT9237, ADP3168, etc., and in the application of the integrated power supply device 1, the battery management and control unit 4 detects in real time whether the load 12 IS in a normal power supply state of the utility power; if so, the battery management and control unit 4 controls the battery charging unit 5 to charge the battery pack unit 3 according to the running state of the battery pack unit 3; otherwise, the battery management and control unit 4 controls the battery unit 3 to supply power to the load 12 via the output voltage stabilizing unit 6.
In a specific example, the battery management unit 4 is a battery management circuit board including a battery management chip, and the battery management chip may be a reconfigurable battery network control dedicated chip, for example, a battery management chip with a model CTC2000, for implementing management and control of the battery unit 3.
(4) Battery charging unit 5: the battery charging unit 5 is respectively connected with the battery pack unit 3 and the battery management and control unit 4, and the battery charging unit 5 is used for charging the battery pack unit 3 according to a control command of the battery management and control unit 4. It may be understood that the battery management and control unit 4 may also be configured to monitor the operation state of the battery charging unit 5 in real time, if it is detected that the battery charging unit 5 fails, the battery management and control unit 4 sends an alarm message that the battery charging unit 5 fails to the data center, where the alarm message may include a tag code of the failed battery charging unit 5, so that the control center 13 can find a specific location of the failed battery charging unit 5 in a pre-stored data table according to the tag code, and send a maintenance personnel to the location point to repair or replace the failed battery charging unit 5.
(5) Output voltage stabilizing unit 6: the output voltage stabilizing unit 6 is configured to regulate the voltage output by the battery unit 3 according to a voltage range acceptable by the load 12, so as to meet the power supply requirement of the load 12.
As can be seen from the above description, the integrated power supply device 1 provided by the embodiment of the present invention can realize centralized control of the energy storage battery, effectively improve the reliability and safety of the charging and discharging process of the energy storage battery, reduce the maintenance time and money cost of the energy storage battery, further effectively improve the power supply efficiency of the energy storage battery to the load 12, and increase the service life of the energy storage battery.
In a specific embodiment, the integrated power supply device 1 provided by the present invention is further provided with an auxiliary power supply unit 7, referring to fig. 2, the auxiliary power supply unit 7 specifically includes the following:
The auxiliary power supply unit 7 is respectively connected with the battery management and control unit 4, the battery charging unit 5 and the output voltage stabilizing unit 6, so that when the battery management and control unit 4 cannot meet the power supply requirement of the load 12, the auxiliary power supply unit 7 is controlled to supply power to the load 12 through the output voltage stabilizing unit 6, and the battery charging unit 5 is controlled to charge the auxiliary power supply unit 7.
Based on the above description, referring to fig. 3, the auxiliary power supply unit 7 may also be specifically a supercapacitor array 701, where in an example, the supercapacitor array 701 is mainly formed by combining a supercapacitor group and a bidirectional DC/DC converter in an array, where the supercapacitor group is a novel electrochemical energy storage device between a conventional capacitor and a battery, and the supercapacitor group has a higher energy density than the conventional capacitor; compared with the battery, the battery has higher power density and longer cycle life, so that the battery has the advantages of the traditional capacitor and the battery, and the charge and energy are stored mainly by utilizing an electric double layer formed by electrode/electrolyte interface charge separation or Faraday 'quasi-capacitance' generated by rapid oxidation-reduction reaction on the surface and the inside of the electrode. Therefore, the super capacitor has the characteristics of high charging speed, good high-current discharging performance, long cycle life, wide working temperature and the like, so that the super capacitor array 701 can output energy when being responsible for isolation and dynamic recombination of battery monomers in the battery array 302, uninterrupted power supply of the load 12 is ensured, and further the reliability and safety of the integrated power supply device 1 for supplying power to the load 12 are further improved.
As can be seen from the above description, the integrated power supply device 1 provided by the embodiment of the present invention realizes the dual power supply mechanism of the battery unit 3 and the auxiliary power supply unit 7 to the load 12 through the auxiliary power supply unit 7, and can further improve the reliability and safety of the charging and discharging process of the energy storage battery, thereby effectively improving the power supply efficiency of the energy storage battery to the load 12 and prolonging the service life of the energy storage battery.
In a specific embodiment, the present invention further provides a specific embodiment of the battery unit 3 in the integrated power supply device 1, where the battery unit 3 specifically includes the following:
A battery array 302 formed by connecting a plurality of unit batteries 301, so that the battery management and control unit 4 controls the battery charging unit 5 to charge any number of unit batteries 301 through the battery array 302.
It can be understood that the single battery 301 in the present embodiment may be a single lithium battery or other single energy storage battery, and the battery array 302 formed by connecting a plurality of single batteries 301 may be specifically shown as follows: the plurality of single lithium batteries are arranged on the high-frequency power electronic semiconductor array plate, discretization and digitalization of battery energy flow in microsecond level are achieved, and the number of the single lithium batteries is configured according to discharge capacity requirements and battery pack voltage, so that the integrated power supply device 1 can achieve targeted control of the single batteries 301, and further the intelligent degree of the integrated power supply device 1 is improved while the power supply reliability of the integrated power supply device 1 is improved.
On the basis of the above description, referring to fig. 4, the battery unit 3 is further provided therein with a detection subunit 303 for detecting the operation state of each of the unit cells 301.
The detection subunit 303 is respectively connected with each unit cell 301 in the connection of the battery management and control unit 4, so that if the battery management and control unit 4 learns that any number of unit cells 301 have faults through the detection subunit 303, the faulty unit cells 301 are isolated from the battery array 302, and if the battery management and control unit 4 learns that the voltage of any number of unit cells 301 is behind a cut-off voltage value through the detection subunit 303, the battery charging unit 5 is controlled to charge any number of unit cells 301. It can be understood that the cutoff voltage value is a preset voltage threshold, that is, if the voltage of a certain single battery 301 is detected to be less than the cutoff voltage value, it is indicated that the voltage of the single battery 301 is too low, and charging is required; if the voltage of a certain cell 301 is greater than the cutoff voltage value, it is indicated that the voltage of the cell 301 is sufficient to power the external load 12 and that no charging is needed for a while. In one example, the cutoff voltage value may be set to 30% to 60% of the maximum voltage value of the unit cell 301.
It is to be understood that the detecting subunit 303 may be an integrated comprehensive operation parameter detecting device, which can detect the operation parameters such as the voltage, the current, and the temperature of each unit cell 301 in real time, or a plurality of detecting devices with different functionalities, which detect the operation parameters such as the voltage, the current, and the temperature of each unit cell 301, respectively, and are connected to each unit cell 301, and are connected to the cell management unit 4.
In one example, a certain battery array 302 includes 6 lithium unit batteries, and the detection subunit 303 is respectively connected to the 6 lithium unit batteries, where the 6 lithium unit batteries are connected in parallel to the battery array 302, and the 6 lithium unit batteries are respectively a to F, see table 1.
TABLE 1
As can be seen from table 1, if the current state of the integrated power supply device 1 is that the battery management and control unit 4 controls the battery pack unit 3 to charge the external load 12 via the output voltage stabilizing unit 6, and if the integrated power supply device 1 detects that the single lithium battery D fails in the period, the single lithium battery D is isolated from the battery array 302, and whether the power supply amount of the remaining single lithium batteries can meet the power consumption requirement of the load 12 is detected, if so, the remaining single lithium batteries are controlled to continuously supply power to the load 12, and if the power supply amount of the remaining single lithium batteries cannot meet the power consumption requirement of the load 12, the auxiliary power supply unit 7 is controlled to continuously supply power to the load 12. Meanwhile, the battery management and control unit 4 may also send fault information of the single lithium battery D to the control center 13.
If the current state of the integrated power supply device 1 is that the battery management and control unit 4 controls the battery pack unit 3 to charge the external load 12 via the output voltage stabilizing unit 6, and the integrated power supply device 1 detects that the voltages of the lithium batteries B and F are smaller than the cut-off voltage value in the period, the lithium batteries B and F are marked as to-be-charged, and after the current process of supplying power to the load 12 is finished, the battery charging unit 5 is controlled to charge the lithium batteries B and F.
If the current state of the integrated power supply device 1 is that the battery management and control unit 4 detects that the external load 12 does not need to be charged, and the integrated power supply device 1 detects that the voltages of the single lithium batteries B and F are smaller than the cut-off voltage value in the period, and the single lithium battery D fails, the battery charging unit 5 is controlled to charge the single lithium batteries B and F, isolate the single lithium battery D from the battery array 302, and send failure information of the single lithium battery D to the control center 13.
As can be seen from the above description, the integrated power supply device 1 provided by the embodiment of the present invention can accurately and reliably control the charging or discharging of the unit battery 301, and by accurately controlling the object to the unit battery, the reliability and safety of the charging and discharging process of the energy storage battery can be more effectively improved, and the service life of the energy storage battery can be increased.
In a specific embodiment, the integrated power supply device 1 provided by the present invention is further provided with a communication unit 8, and referring to fig. 5, the communication unit 8 specifically includes the following:
A communication unit 8 provided in the housing 2, and the communication unit 8 communicates with a control center 13; the communication unit 8 is respectively connected with the battery pack unit 3, the battery management and control unit 4, the battery charging unit 5 and the output voltage stabilizing unit 6; the communication unit 8 is configured to send the operation states of the battery pack unit 3, the battery management unit 4, the battery charging unit 5, and the output voltage stabilizing unit 6 to the control center 13.
It will be appreciated that the aforementioned communication between the battery management and control unit 4 and the control center 13 is achieved by the communication unit 8, and the communication unit 8 is a device responsible for communication between the control center 13 and each unit, and controls all communication channels connected to remote data devices, so as to achieve functions including error control, interrupt access control, acknowledgement control, transmission sequence, serial-parallel conversion, and the like.
As can be seen from the foregoing description, the integrated power supply device 1 provided by the embodiment of the present invention effectively improves the intelligentization degree of the integrated power supply device 1 through the arrangement of the communication unit 8, and enables the control center 13 to timely learn the operation condition of each component in the integrated power supply device 1, thereby improving the operation reliability and safety of the integrated power supply device 1.
In a specific embodiment, the present invention further provides a specific embodiment of the housing 2 in the integrated power supply device 1, referring to fig. 6, the housing 2 specifically includes the following:
the housing 2 is provided with a communication interface 201, and the communication unit 8 communicates with the control center 13 via the communication interface 201.
In addition, the casing 2 is further provided with an operation indicator 202, a buzzer 203 and a device switch 204.
In a specific example, the operation indicator lamp 202, the buzzer 203 and the device switch 204 may be disposed on one side outer wall of the housing 2, and the operation indicator lamp 202, the buzzer 203 and the device switch 204 are all electrically connected to the battery management unit 4, so that a user can turn on the battery management unit 4 by turning on the device switch 204, so that the battery management unit 4 controls the operation of each component unit, including controlling the turn-on of the operation indicator lamp 202; in addition, when the battery management and control unit 4 knows that a single battery or other component single body has a fault, the buzzer 203 is controlled to be turned on, so that a maintenance person can quickly learn the fault occurrence position according to the sound emitted by the buzzer 203. The communication interface 201 may be disposed on the outer wall of the other side of the housing 2, because the communication unit 8 may be more than one according to the functional division, so that the functional display of the integrated power supply device 1 can be more clearly performed by disposing the running indicator 202, the buzzer 203 and the device switch 204 on the opposite side, and the maintenance of the integrated power supply device 1 is more convenient.
In a specific embodiment, referring to fig. 7, the integrated power supply device 1 provided by the present invention may also be installed in a cabinet 9, and the housing of the integrated power supply device 1 may be adjusted according to the number and the volume of the single batteries 301 in the battery unit 3, and the housing of the integrated power supply device 1 may be adjusted according to the shape and the size of the cabinet 9 to be placed, where in an example, the cabinet 9 may be an information communication equipment cabinet 9.
As can be seen from the above description, the integrated power supply device 1 provided by the embodiment of the present invention realizes the cabinet 9-level distributed power supply, wherein the cabinet 9-level distributed power supply is to distribute the power supply and the battery equipment in the ICT equipment cabinet 9, so as to supply power to the ICT equipment nearby, and the power supply efficiency is high; the power battery chamber is not required to be arranged, and the space utilization rate of the machine room is high; meanwhile, the power supply equipment can realize flexible planning, capacity expansion according to needs and a construction mode of jointly carrying out growth and investment.
To further illustrate the present solution, the present invention further provides a specific application example of the integrated power supply device 1, referring to fig. 8, which specifically includes the following:
in this embodiment, the battery unit 3 is specifically a battery array 302, the battery management and control unit 4 is specifically a battery management and control circuit board, the battery charging unit 5 is specifically a charging circuit board, the auxiliary power supply unit 7 is specifically a super capacitor array 701, the output voltage stabilizing unit 6 is specifically an output voltage stabilizing circuit board, and the communication unit 8 is specifically a communication board.
In order to meet the popularization and application requirements of the cabinet 9-level distributed power supply technology and improve the power supply efficiency and the machine room space utilization rate, the integrated power supply device 1 applied to the cabinet 9 provided by the application example mainly integrates functional units such as a battery array 302, a super capacitor array 701, a battery management and control circuit board, a battery management and control chip, a charging circuit board, a communication board, an output voltage stabilizing circuit board and the like in a single machine frame, can be embedded into the cabinet 9 for use, and realizes digital management and control of batteries and automatic inspection operation and maintenance of internetworking.
Each functional unit adopts a modularized architecture design, and can be quickly integrated and installed in an independent machine frame to form a battery product. The functional use conditions of the functional units are as follows:
Cell array 302: and a plurality of lithium battery cells are arranged on the high-frequency power electronic semiconductor array plate, discretization and digitalization of battery energy flow in microsecond level are realized, and the number of the lithium battery cells is configured according to discharge capacity requirements and battery pack voltage.
The battery array 302 is provided with a device for detecting the operation parameters of the single batteries 301, and detects the operation parameters of the single batteries 301, such as voltage, current, temperature, and the like, in real time.
2) Battery management and control circuit board (including chip): a reconfigurable battery network control dedicated chip is selected to realize the control of the battery array 302. Any one of the battery cells in the battery array 302 is managed and controlled in real time through a dedicated control chip and a state instruction set API thereof, and the current state of any one of the battery cells 301, such as SOC, voltage, current, etc., can be checked. And meanwhile, according to the consistency of the battery monomers, carrying out dynamic recombination of the battery.
The realization of the dynamic recombination of the batteries solves the problem of the difference of shielding single batteries 301 in the battery pack, and when the current and the temperature of the single batteries 301 in the battery pack have unbalanced phenomenon or faults, the single batteries 301 are shielded by the management and control system, and the rest single batteries 301 are recombined and applied.
3) Battery charging circuit board: and the charging management of the super capacitor and the lithium battery is carried out.
4) Super capacitor array 701: and the battery array 302 is responsible for outputting energy when the battery cells in the battery array are isolated and dynamically recombined, so that uninterrupted power supply of the load 12 is ensured.
5) Output voltage stabilizing circuit board: the battery output voltage is regulated according to the acceptable voltage range of the load 12, meeting the power supply requirements of the load 12.
6) Communication board: and the monitoring information of each functional unit is collected and communicated with the background.
In this application, the integrated power supply device 1 is a composite energy storage system composed of a plurality of different energy storage media, and the system automatically detects an external power supply state and automatically switches between the mains supply and the battery. When the external power supply is normal, the system charges a battery or a battery pack according to the current battery state; when the external power supply is interrupted, the battery may be fully powered to a discharged state within 1 millisecond, providing uninterrupted power to the load 12. The battery can automatically perform the configuration of the minimum discharge unit number according to the condition of the external load 12 (the battery capacity output configuration is calculated in real time according to the size condition of the load 12 and the standby time length), so the method has the advantages of high flexibility and good reliability.
In addition, the external structure of the integrated power supply device 1 is shown in fig. 9 to 11, the external dimension is determined according to the internal dimension of the cabinet 9 and the battery capacity, and the battery device is fixedly installed in the cabinet 9 through an L-shaped bracket.
The front panel of the integrated power supply device 1 is provided with an operation indicator lamp 202, a buzzer 203, a manual switch, a communication interface 201, and the like, which are defined as shown in table 2 below.
TABLE 2
And, the function definition of the indicator lamp and buzzer 203 is shown in table 3 below.
TABLE 3 Table 3
The rear panel of the integrated power supply device 1 is provided with a direct-current input/output interface and an alternating-current commercial power detection interface, all interfaces select special connectors, and the connectors are directly connected with a busbar in a hot plug manner, so that the integrated power supply device is convenient to install and maintain.
As can be seen from the above description, the integrated power supply device 1 of the present invention adopts a digital control means to change a battery fixed serial-parallel hard connection system into a software-definable battery energy exchange system, and has the following technical characteristics and values compared with the existing battery application:
(1) And (3) intelligent maintenance: 100% of digitization, internet visual management and automatic inspection maintenance support.
(2) And (3) quick: the standard cabinet 9 is designed, so that the universality is strong, and the installation and the deployment are quick.
(3) Long service life: the service life of the battery pack is close to that of a battery monomer, and the service life of the battery is prolonged by 3 times.
(4) The reliability is high: microsecond level automatic fault monomer isolation, dynamic group do not influence group's wholeness ability.
(5) The problem that the battery is high in operation and maintenance cost and is used in the ICT equipment cabinet 9 in a large-scale scattered installation mode is thoroughly solved, the demands of ICT industry on the aspects of high efficiency, flexibility, reliability and the like of power supply under new situation are met, and the reliability of the system, the power supply asset and the machine room utilization rate are improved.
A second embodiment of the present invention provides a specific implementation manner of an integrated power supply device 1 system including the integrated power supply device 1, referring to fig. 12, where the integrated power supply system specifically includes:
A plurality of the integrated power supply devices 1 are connected in parallel with an output bus 10, and the integrated power supply devices 1 are connected by a communication bus 11.
In a specific example, the system of the integrated power supply device 1 is composed of 1 or more integrated power supply devices 1, each integrated power supply device 1 is directly connected in parallel to the output bus 10, one integrated power supply device 1 is set as a host, an information communication part between each integrated power supply device 1 is completed by the communication bus 11, protocol format conversion and data processing are completed on the host, the integrated power supply device 1 is accessed to the monitoring center through an ethernet port, power output energy of each integrated power supply device 1 can be controlled through the internet, and meanwhile, energy can be scheduled among the integrated power supply devices 1.
Examples of applications for which the power output energy of each integrated power supply device 1 can be controlled via the internet are: the output power of each integrated power supply device 1 is calculated and determined according to the size of the load 12 and the standby time length, and on the premise of ensuring the standby requirement of the load 12, the surplus capacity of the battery is used for peak clipping and valley filling or is scheduled for other purposes.
As can be seen from the above description, the integrated power supply system provided by the embodiment of the invention can realize centralized control of the energy storage battery, effectively improve the reliability and safety of the charging and discharging process of the energy storage battery, reduce the maintenance time and money cost of the energy storage battery, further effectively improve the power supply efficiency of the energy storage battery to the load 12, and prolong the service life of the energy storage battery.
An embodiment III of the present invention provides a specific implementation manner of a power supply method implemented by using the integrated power supply device 1, referring to fig. 13, where the power supply method specifically includes the following contents:
Step 100: the battery management and control unit 4 detects whether the load 12 is in a normal power supply state of the mains supply in real time;
if yes, go to step 200, otherwise go to step 300.
Step 200: the battery management and control unit 4 controls the battery charging unit 5 to charge the battery pack unit 3 according to the operation state of the battery pack unit 3;
step 300: the battery management and control unit 4 controls the battery pack unit 3 to supply power to the load 12 through the output voltage stabilizing unit 6.
It can be understood that the specific switching manner of the battery management unit 4 for controlling the battery unit 3 to charge or controlling the battery unit 3 to switch from the idle state to the discharging state is determined according to the DC bus, and the switching of the discharging state to the charging state is determined according to the AC and DC buses, which specifically includes the following contents:
(1) When the voltage of the direct current output bus 10 is detected to be smaller than a set value, the battery is switched to a discharging state;
(2) When it is detected that the ac input is greater than the set point while the output bus 10 voltage is greater than or equal to the set point, the battery is switched to a charged state.
The ac input voltage and dc output bus 10 voltage settings are set for each voltage class case, with typical values being shown in tables 4 and 5 below:
TABLE 4 Table 4
| Output DC voltage level | 12V | 48V | 240V | 336V |
| Setting a voltage value | 12.4V | 54V | 270V | 378V |
TABLE 5
| Input ac voltage level | 220V | 380V |
| Setting a voltage value | 180V | 300V |
As can be seen from the above description, the integrated power supply method provided by the embodiment of the invention can realize centralized control of the energy storage battery, effectively improve the reliability and safety of the charging and discharging process of the energy storage battery, reduce the maintenance time and money cost of the energy storage battery, further effectively improve the power supply efficiency of the energy storage battery to the load 12, and prolong the service life of the energy storage battery.
In a specific embodiment, the power supply method further specifically includes the following:
In the process that the battery management and control unit 4 controls the battery charging unit 5 to charge the battery unit 3 according to the operation state of the battery unit 3, if the battery management and control unit 4 knows that the battery unit 3 cannot meet the power supply requirement of the load 12 through the detection subunit 303, the battery management and control unit 4 controls the auxiliary power supply unit 7 to supply power to the load 12 through the output voltage stabilizing unit 6; the auxiliary power supply unit 7 is respectively connected with the battery management and control unit 4, the battery charging unit 5 and the output voltage stabilizing unit 6.
As can be seen from the above description, the integrated power supply device 1 provided by the embodiment of the present invention realizes the dual power supply mechanism of the battery unit 3 and the auxiliary power supply unit 7 to the load 12 through the auxiliary power supply unit 7, and can further improve the reliability and safety of the charging and discharging process of the energy storage battery, thereby effectively improving the power supply efficiency of the energy storage battery to the load 12 and prolonging the service life of the energy storage battery.
In a specific embodiment, the power supply method further specifically includes the following:
Step A00: the battery management and control unit 4 controls the detection subunit 303 to perform real-time operation on the plurality of unit batteries 301 in the battery array 302 constituting the battery unit 3.
Step B00: if the battery management unit 4 knows that any number of the single batteries 301 have faults through the detection subunit 303, the faulty single batteries 301 are isolated from the battery array 302.
Step C00: if the battery management and control unit 4 learns that the electric quantity of any number of the single batteries 301 is lower than the preset electric quantity value through the detection subunit 303, the battery charging unit 5 is controlled to charge the any number of the single batteries 301.
It will be appreciated that the execution sequence between steps a00 to C00 and steps 100 to 300 is executed simultaneously or alternately according to the actual application.
As can be seen from the above description, the integrated power supply device 1 provided by the embodiment of the present invention can accurately and reliably control the charging or discharging of the unit battery 301, and by accurately controlling the object to the unit battery, the reliability and safety of the charging and discharging process of the energy storage battery can be more effectively improved, and the service life of the energy storage battery can be increased.
In a specific embodiment, the present invention further provides a specific embodiment of step 300 in the power supply method, where the step 300 specifically includes the following:
step 301: the battery management and control unit 4 obtains the electricity consumption of the load 12, and determines a minimum discharging unit according to the electricity consumption of the load 12.
Step 302: the battery management and control unit 4 selects a single battery 301 corresponding to the minimum discharge unit from a plurality of single batteries 301 in a battery array 302 constituting the battery unit 3, and supplies power to the load 12 via the output voltage stabilizing unit 6.
Step 303: the battery management and control unit 4 marks the unselected single battery 301 as a battery for peak clipping and valley filling or a battery for energy allocation.
In an example of application of the power supply method, the battery management unit 4 automatically detects an external power supply state and automatically switches between mains and a battery. When the external power supply is normal, the system charges a battery or a battery pack according to the current battery state; when the external power supply is interrupted, the battery may be fully powered to a discharged state within 1 millisecond, providing uninterrupted power to the load 12. The battery can automatically perform configuration of the minimum discharge unit number according to the condition of the external load 12 (the battery capacity output configuration is calculated in real time according to the size condition of the load 12 and the standby time length), so that the power supply method has the advantages of high flexibility and good reliability, and the functions which can be realized by the power supply method are shown in table 5.
TABLE 5
As can be seen from the above description, the power supply method provided by the embodiment of the invention can realize centralized control of the energy storage battery, effectively improve the reliability and safety of the charging and discharging process of the energy storage battery, reduce the maintenance time and money cost of the energy storage battery, further effectively improve the power supply efficiency of the energy storage battery to the load 12, and prolong the service life of the energy storage battery.
The embodiments of the integrated power supply device and the like described above are merely illustrative, wherein the units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, may be located in one place, or may be distributed over a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment. Those of ordinary skill in the art will understand and implement the present invention without undue burden.
From the above description of the embodiments, it will be apparent to those skilled in the art that the embodiments may be implemented by means of software plus necessary general hardware platforms, or of course may be implemented by means of hardware. Based on this understanding, the foregoing technical solution may be embodied essentially or in a part contributing to the prior art in the form of a software product, which may be stored in a computer readable storage medium, such as ROM/RAM, a magnetic disk, an optical disk, etc., including several instructions for causing a big data transmission device (which may be a personal computer, a server, or a network device, etc.) to perform the method described in the various embodiments or some parts of the embodiments.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the embodiments of the present invention, and are not limited thereto; although embodiments of the present invention have 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 corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention.
Claims (7)
1. An integrated power supply device, characterized in that the integrated power supply device comprises: the battery pack comprises a shell, a battery pack unit, a battery management and control unit, a battery charging unit, an output voltage stabilizing unit and a super capacitor array, wherein the battery pack unit, the battery management and control unit, the battery charging unit, the output voltage stabilizing unit and the super capacitor array are arranged in the shell;
The battery management and control unit, the battery charging unit and the output voltage stabilizing unit are all connected to the battery pack unit;
The battery management and control unit is connected with the battery charging unit and is used for controlling the battery charging unit to charge the battery pack unit or controlling the battery pack unit to supply power to the load through the output voltage stabilizing unit;
the battery management and control unit is also used for monitoring the running state of the battery charging unit in real time, and if the battery charging unit is detected to be faulty, sending alarm information of the fault of the battery charging unit to a data center, wherein the alarm information comprises a mark code of the battery charging unit;
The super capacitor array is respectively connected with the battery management and control unit, the battery charging unit and the output voltage stabilizing unit, so that when the battery pack unit cannot meet the load power supply requirement, the battery management and control unit controls the super capacitor array to supply power to the load through the output voltage stabilizing unit, and controls the battery charging unit to charge the super capacitor array;
The battery unit includes: the battery management and control unit controls the battery charging unit to charge any number of single batteries through the battery array;
the battery unit further includes: a detection subunit for detecting an operation state of each of the single batteries;
The detection subunit is connected with the battery management and control unit, so that if the battery management and control unit acquires that any number of single batteries have faults through the detection subunit, the faulty single batteries are isolated from the battery array, and if the battery management and control unit acquires that the voltage of any number of single batteries falls behind a cut-off voltage value through the detection subunit, the battery charging unit is controlled to charge any number of single batteries;
the detection subunit comprises a comprehensive operation parameter detection device, wherein the comprehensive operation parameter detection device is used for detecting the voltage, the current and the temperature of each single battery in real time; or alternatively
The detection subunit comprises a plurality of detection devices, each detection device is connected with each single battery, each detection device is respectively connected to the battery management and control unit, and each detection device is respectively used for detecting the voltage, the current and the temperature of each single battery in real time.
2. The integrated power supply of claim 1, further comprising: a communication unit disposed in the housing and communicating with a control center;
The communication unit is respectively connected with the battery pack unit, the battery management and control unit, the battery charging unit and the output voltage stabilizing unit;
The communication unit is used for sending the running states of the battery pack unit, the battery management and control unit, the battery charging unit and the output voltage stabilizing unit to the control center.
3. An integrated power supply system, characterized in that the integrated power supply system comprises a plurality of integrated power supply devices according to any one of claims 1 to 2;
The integrated power supply devices are connected with the output bus in parallel, and the integrated power supply devices are connected through a communication bus.
4. A power supply method implemented using the integrated power supply device of any one of claims 1 to 2, characterized in that the power supply method comprises:
the battery management and control unit detects whether the load is in a normal power supply state of the mains supply in real time;
If so, the battery management and control unit controls the battery charging unit to charge the battery pack unit according to the running state of the battery pack unit;
otherwise, the battery management and control unit controls the battery pack unit to supply power to the load through the output voltage stabilizing unit.
5. The power supply method according to claim 4, characterized in that the power supply method further comprises:
the battery management and control unit controls the detection subunit to real-time control the running states of a plurality of single batteries in the battery array forming the battery pack unit;
If the battery management and control unit acquires that any number of single batteries have faults through the detection subunit, isolating the single batteries with faults from the battery array;
and if the battery management and control unit acquires that the electric quantity of any number of single batteries is lower than a preset electric quantity value through the detection subunit, controlling the battery charging unit to charge the any number of single batteries.
6. The power supply method according to claim 5, characterized in that the power supply method further comprises:
In the process that the battery management and control unit controls the battery charging unit to charge the battery pack unit according to the running state of the battery pack unit, if the battery management and control unit obtains that the battery pack unit cannot meet the power supply requirement of the load through the detection subunit, the battery management and control unit controls the super capacitor array to supply power to the load through the output voltage stabilizing unit;
the super capacitor array is respectively connected with the battery management and control unit, the battery charging unit and the output voltage stabilizing unit.
7. The power supply method according to claim 4, wherein the battery management unit controls the battery unit to supply power to the load via the output voltage stabilizing unit, comprising:
The battery management and control unit acquires the electricity consumption of the load and determines a minimum discharge unit according to the electricity consumption of the load;
the battery management and control unit selects a single battery corresponding to the minimum discharging unit from a plurality of single batteries in a battery array forming the battery pack unit to supply power to the load through the output voltage stabilizing unit;
the battery management and control unit marks the unselected single batteries as peak clipping and valley filling batteries or energy allocation batteries.
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