CN117595454A - Portable energy storage system and energy storage power supply - Google Patents
Portable energy storage system and energy storage power supply Download PDFInfo
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- CN117595454A CN117595454A CN202311717828.4A CN202311717828A CN117595454A CN 117595454 A CN117595454 A CN 117595454A CN 202311717828 A CN202311717828 A CN 202311717828A CN 117595454 A CN117595454 A CN 117595454A
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- 238000004146 energy storage Methods 0.000 title claims abstract description 84
- 238000004891 communication Methods 0.000 claims description 67
- 238000012545 processing Methods 0.000 claims description 54
- 238000007599 discharging Methods 0.000 claims description 45
- 238000001514 detection method Methods 0.000 claims description 17
- 238000000034 method Methods 0.000 claims description 16
- 230000001012 protector Effects 0.000 claims description 2
- 230000011664 signaling Effects 0.000 claims description 2
- 230000010354 integration Effects 0.000 abstract description 8
- 230000006870 function Effects 0.000 description 11
- 230000008569 process Effects 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 3
- 239000000523 sample Substances 0.000 description 3
- 239000003990 capacitor Substances 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 238000004590 computer program Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000009499 grossing Methods 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000003862 health status Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 229910052987 metal hydride Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000013486 operation strategy Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/4207—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells for several batteries or cells simultaneously or sequentially
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/44—Methods for charging or discharging
- H01M10/441—Methods for charging or discharging for several batteries or cells 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
- H02J15/00—Systems for storing electric energy
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0047—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with monitoring or indicating devices or circuits
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0068—Battery or charger load switching, e.g. concurrent charging and load supply
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
- H01M2010/4271—Battery management systems including electronic circuits, e.g. control of current or voltage to keep battery in healthy state, cell balancing
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The embodiment of the application relates to the technical field of energy storage, in particular to a portable energy storage system and an energy storage power supply. The portable energy storage system comprises a battery pack and a battery management module; the battery management module is connected with the battery pack; the battery management module is integrated with a functional unit, and the functional unit is used for executing the preset function of the portable energy storage system. In the embodiment of the application, the integration level of the portable energy storage product is improved by integrating the functional modules dispersed in the portable energy storage protection plate into the battery management system.
Description
Technical Field
The embodiment of the application relates to the technical field of energy storage, in particular to a portable energy storage system and an energy storage power supply.
Background
With the popularity of outdoor lifestyles and the pursuit of natural experiences by people, outdoor activities are becoming more and more popular in modern society. However, these remote natural environments often lack convenient power supplies, which can present some trouble to outdoor lovers using electronic devices during activity. To meet the demand for electricity in outdoor environments, portable energy storage power supply products have been developed that provide a continuous and reliable supply of electricity to users. The portable energy storage power supply product includes portable energy storage protection shield, and portable energy storage protection shield sets up battery management system (Battery Management System, BMS), and battery management system can each parameter of real-time supervision battery package, includes: voltage, current, temperature, etc., ensures that the battery works in a safe and stable working range, and is responsible for controlling the charging and discharging processes, thereby ensuring that the battery pack can be charged and discharged uniformly.
The inventors found in the course of implementing the embodiments of the present application that: in the current portable energy storage protection board, the functions of a battery management system are fewer, and various functional modules are dispersed in the portable energy storage protection board, so that the overall integration level is low.
Disclosure of Invention
In view of the above problems, embodiments of the present application provide a portable energy storage system and an energy storage power supply, which solve the problem of low circuit integration level of the existing portable energy storage product caused by dispersion of functional modules.
In a first aspect, embodiments of the present application provide a portable energy storage system including a battery pack and a battery management module; the battery management module is connected with the battery pack; the battery management module is integrated with a functional unit, and the functional unit is used for executing the preset function of the portable energy storage system.
In an optional manner, the battery management module further comprises a front end control unit, a high-side driving unit and a data processing unit; the front end control unit is respectively connected with the battery pack, the high-side driving unit and the data processing unit, and the data processing unit is also respectively connected with the high-side driving unit and the functional unit; the front-end control unit is used for acquiring battery data of the battery pack and outputting a control signal to the high-side driving unit based on the battery data; the high-side driving unit is used for receiving the control signal and controlling the charge and discharge states of the battery pack according to the control signal; the front-end control unit is also used for outputting the battery data to the data processing unit; the data processing unit is used for receiving the battery data and processing the battery data so that the functional unit executes the preset function according to the processed battery data, wherein the processed battery data comprises communication data and battery state data.
In an optional manner, the data processing unit is provided with a communication control end, a display control end and an LED control end, and the functional unit comprises a communication subunit, a display subunit and an LED subunit; the communication subunit is respectively connected with the communication control end and external equipment, the display subunit is connected with the display control end, and the LED subunit is connected with the LED control end; the communication subunit is used for receiving the communication data and sending the communication data to the external equipment through a 485 bus, a CAN bus and Bluetooth; the display subunit is used for receiving the battery state data and visually displaying the battery state data; the LED sub-unit is used for receiving the battery state data and controlling the display state of the LED indicator lamp based on the battery state data.
In an alternative manner, the battery management module further comprises a power supply unit; the power supply unit is respectively connected with the battery pack, the high-side driving unit and the data processing unit and is used for supplying power to the battery pack, the high-side driving unit and the data processing unit.
In an alternative manner, the high-side driving unit comprises a protection subunit, a charge-discharge subunit and a parallel operation control subunit; the protection subunit is connected with the battery pack, the front end control unit, the data processing unit and the charge and discharge subunit, the charge and discharge subunit is also connected with the front end control unit, the parallel operation control subunit and an external charger/load, and the parallel operation control subunit is connected with the front end control unit, the power supply unit, the external parallel operation and the external charger/load; the charging and discharging subunit is configured to receive the control signal sent by the front-end control unit, and control a charging and discharging state of the battery pack according to the control signal.
In an alternative manner, the front-end control unit is provided with a first control fusing end, the data processing unit is provided with a second control fusing end, and the protection subunit comprises a fuse F1 and a switch tube Q1; the first end of the fuse F1 is connected with the positive electrode of the battery pack, the second end of the fuse F1 is connected with the charge-discharge electronic unit, the third end of the fuse F1 is connected with the second end of the switch tube Q1, the first end of the switch tube Q1 is respectively connected with the first control fusing end and the second control fusing end, and the third end of the switch tube Q1 is grounded.
In an optional manner, the front-end control unit is further provided with a charging control end, a discharging control end, a pre-discharging control end and a charging detection end, and the charging and discharging subunit comprises a switching tube Q2, a switching tube Q3, a switching tube Q4 and a resistor R1; the third end of the switch tube Q2 is connected with the second end of the protector F1, the second end of the switch tube Q2 is connected with the second end of the switch tube Q3, the first end of the switch tube Q2 is connected with the charging control end, the first end of the switch tube Q3 is connected with the discharging control end, the third end of the switch tube Q3 is connected with the charging detection end, the parallel operation control subunit and the external charger/load positive electrode, the first end of the switch tube Q4 is connected with the pre-discharging control end, the second end of the switch tube Q4 is connected with the common end of the switch tube Q2 and the switch tube Q3, the third end of the switch tube Q4 is connected with the first end of the resistor R1, and the second end of the resistor R1 is respectively connected with the third end of the switch tube Q3, the charging detection end, the parallel operation control subunit and the external charger/load positive electrode.
In an optional manner, the power module is provided with a parallel operation control end and a parallel operation end, and the parallel operation control subunit comprises a switch tube Q5; the first end of the switching tube Q5 is connected with the parallel operation control end, the second end of the switching tube Q5 is respectively connected with the external charger/load positive end, the charging detection end, the second end of the resistor R1 and the third end of the switching tube Q3, and the third end of the switching tube Q5 is connected with the parallel operation end and the external parallel operation.
In an alternative, the portable energy storage system includes at least two battery packs and at least two battery management modules; the battery pack is connected with the battery management modules in a one-to-one correspondence manner to form at least two battery management modules, one of the at least two battery management modules is selected as a host, the other battery management modules are used as slaves, the battery management modules of the slaves are sequentially connected and then connected with the battery management modules of the host, and the external charger/load negative electrode of the host is connected with the external charger/load negative electrode of the slaves.
In a second aspect, an embodiment of the present application provides a charge-discharge control method, which is applied to the portable energy storage system, where the method includes: when charging, acquiring the electric quantity of the at least two battery packs as a first electric quantity, and charging the at least two battery packs in sequence according to the first electric quantity and a preset charging principle; and when discharging, acquiring the electric quantity of the at least two battery packs as a second electric quantity, and sequentially discharging the at least two battery packs according to the second electric quantity and a preset discharging principle.
In a third aspect, embodiments of the present application provide an energy storage power supply comprising a portable energy storage system as described in any one of the above.
In other words, the battery management module is connected with the battery pack, wherein the battery management module is integrated with the functional unit, the functional unit can execute the preset function of the portable energy storage system, and the integration level of the portable energy storage product is improved by integrating the functional units dispersed in the portable energy storage protection board into the battery management system.
Drawings
One or more embodiments are illustrated by way of example and not limitation in the figures of the accompanying drawings, in which like references indicate similar elements, and in which the figures of the drawings are not to be taken in a limiting sense, unless otherwise indicated.
Fig. 1 is a schematic structural diagram of a portable energy storage system according to an embodiment of the present disclosure;
fig. 2 is a circuit configuration diagram of a high-side driving unit provided in an embodiment of the present application;
fig. 3 is a schematic structural diagram of a portable energy storage system according to an embodiment of the present disclosure;
fig. 4 is a schematic flow chart of a charge-discharge control method according to an embodiment of the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application will be further described in detail with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the present application.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a portable energy storage system according to an embodiment of the present application.
The portable energy storage system 100 includes a battery pack 1 and a battery management module 2, and the battery management module 2 is connected to the battery pack 1. The battery management module 2 is integrated with a functional unit 25, and the functional unit 25 performs a preset function of the portable energy storage system 100. The portable energy storage system 100 is a portable system capable of storing electric energy, and is generally applied to outdoor activities, the battery pack 1 is a device composed of a plurality of battery cells, the battery cells can be lithium batteries, nickel-metal hydride batteries and the like, the battery management module 2 is connected with the battery pack 1, the battery pack can monitor and manage the performance and state of the battery, the functional unit 25 is a component integrated in the battery management module 2 and provided with the capability of executing specific tasks, and the preset function is a specific function predefined and set in the functional unit 25, including, but not limited to, a specific working mode, an automation task, a user interface function and the like.
The embodiment of the application provides a portable energy storage system, and portable energy storage system includes battery package and battery management module, and battery management module is connected with the battery package, wherein, battery management module integration has functional unit, functional unit executable portable energy storage system's preset function, through integrating the functional unit in the portable energy storage protection shield with the dispersion in battery management system, improved portable energy storage product's integrated level.
The battery management module 2 further includes a front-end control unit 21, a high-side driving unit 22, and a data processing unit 23, wherein the front-end control unit 21 is connected to the battery pack 1, the high-side driving unit 22, and the data processing unit 23 is connected to the high-side driving unit 22 and the functional unit 25, respectively.
Specifically, the front-end control unit 21 acquires the battery data of the battery pack 1, and outputs a control signal to the high-side driving unit 22 based on the battery data, the high-side driving unit 22 receives the control signal and controls the charge and discharge states of the battery pack 1 according to the control signal, the front-end control unit 21 further outputs the battery data to the data processing unit 23, and the data processing unit 23 receives the battery data and processes the battery data so that the functional unit 25 performs a preset function according to the processed battery data, wherein the processed battery data includes communication data and battery state data.
Wherein each battery cell in the battery pack 1 is individually connected to the front-end control unit 21, the battery data is information obtained from the battery pack, parameters related to the battery state and performance of the battery pack 1 are provided, including but not limited to temperature, voltage, current, etc., and the control signals are signals for adjusting the operation state of the battery management module 2, for example: the control signal includes information such as start and stop of charge and discharge, the charge and discharge state indicates whether the battery pack 1 is currently in a charge state or a discharge state, the processed battery data indicates data obtained by performing operations such as filtering and smoothing on the collected raw battery data, the communication data is data for communication interaction with other systems or devices, including but not limited to status reports, alarm information, and the like, and the battery state data includes information of the overall state of the battery, for example: battery health, remaining life estimation, and the like.
The battery management module further includes a power supply unit 24, where the power supply unit 24 is connected to the battery pack 1, the high-side driving unit 22, and the data processing unit 23, respectively, and supplies power to the battery pack 1, the high-side driving unit 22, and the data processing unit 23.
Specifically, the BMS EN pin of the power unit 24 is connected to the external control board, the KEY pin of the power unit 24 is connected to the external KEY switch, the user can start the portable energy storage system 100 by pressing the external KEY switch, the VDD6V5 pin of the power unit 24 continuously provides the voltage of 6V5 to the power management module 2 to supply power, the VDD3V3 pin of the power unit 24 is connected to the VDD3V3 pin of the data processing unit 23, and the VDD5V5 pin of the power unit 24 is connected to the VDD5V5 pin of the data processing unit 23.
The B+ pin of the front end control unit 21 is connected with the positive pole B+ of the battery PACK 1, the CHG pin of the front end control unit 21 is connected with the CHG pin of the high side drive unit 22, the DSG pin of the front end control unit 21 is connected with the DSG pin of the high side drive unit 22, the PDSG pin of the front end control unit 21 is connected with the PDSG pin of the high side drive unit 22, the LD pin of the front end control unit 21 is connected with the LD pin of the high side drive unit 22, the PACK pin of the front end control unit 21 is connected with the PACK pin of the high side drive unit 22, the FUSE pin of the front end control unit 21 is connected with the FUSE pin of the high side drive unit 22 and the FUSE pin of the data processing unit 23 respectively, the front end control unit 21 is connected with the data processing unit 23 through 12C SCL and 12C SDA, the ADC pin of the front end control unit 21 is connected with the temperature probe, the P-pin of the front end control unit 21 is connected with the negative pole B-of the battery PACK, the negative pole B-of the battery PACK is connected with the B-pin of the front end control unit 21, and the negative pole B-of the battery PACK is also grounded.
The ADC pin of the front-end control unit 21 is connected with a temperature probe and is used for measuring the temperature of the battery pack 1; the front-end control unit 21 and the data processing unit 23 communicate in real time through I2C, and the collected battery data are transmitted into the data processing unit 23 in real time; the SRP pin of the front-end control unit 21 and the SRN pin of the front-end control unit 21 are respectively connected with two ends of a current detection resistor, and the current detection resistor is used for monitoring the current flowing through the battery pack 1; the PDSG pin of the front end control unit 21 is connected to the PDSG pin of the high side driving unit 22, and can control the PDSG pin to output a high level when the battery pack 1 is discharged, so as to protect the subsequent circuit.
The b+ pin of the high-side driving unit 22 is connected with the positive electrode b+ of the battery pack 1, the p+ pin of the high-side driving unit 22 is connected with the positive electrode of the external charger/load, the P-pin of the high-side driving unit 22 is connected with the negative electrode of the external charger/load, the EX b+ pin of the high-side driving unit 22 is respectively connected with the EX b+ pin of the power supply unit 24 and the external parallel machine, and the EX b+ VCC pin of the high-side driving unit 22 is connected with the EX b+ VCC pin of the power supply unit 24.
The data processing unit 23 is provided with a communication control end, a display control end and an LED control end, and the functional unit 25 includes a communication subunit 251, a display subunit 252 and an LED subunit 253. The communication subunit 251 is connected to the communication control terminal and the external device, the display subunit 252 is connected to the display control terminal, and the LED subunit 253 is connected to the LED control terminal.
The communication subunit 251 includes 485 communication, CAN communication and bluetooth communication, and the communication subunit receives communication data and sends the communication data to an external device through a 485 bus, a CAN bus and bluetooth. The display subunit 252 receives the battery status data and visually displays the battery status data. The LED subunit 253 receives the battery status data and controls the display status of the LED indicator light based on the battery status data. The external device comprises a parallel operation power-up packet, and communication data output by the data processing unit 23 are sent to the parallel operation power-up packet through 485 communication. The communication data output by the data processing unit 23 is sent to other external devices through CAN communication and bluetooth communication, for example, the communication data is sent to the inverter through CAN communication, and the battery state data output by the data processing unit 23 CAN enable the LED subunit 253 to control the LED lamp to display the battery capacity, display the health status of the battery with different colors or brightness, and the like.
Specifically, the LED pin of the data processing unit 23 is connected with the LED, the ADC pin of the data processing unit 23 is connected with other temperature probes, the Disp display screen pin of the data processing unit 23 is externally connected with the display screen, the 485 communication pin of the data processing unit 23 is connected with the 485 communication of the communication subunit 251, the CAN communication pin of the data processing unit 23 is connected with the CAN communication of the communication subunit 251, and the bluetooth communication pin of the data processing unit 23 is connected with the bluetooth communication of the communication subunit 251. The communication control end is 485 communication pins, CAN communication pins and Bluetooth communication pins of the data processing unit 23, the display control end is a Disp display screen pin of the data processing unit 23, and the LED control end is an LED pin of the data processing unit.
The portable energy storage system in the embodiment integrates acquisition, control, display and communication, has high integration level, and solves the problems of complex circuit and high cost caused by the fact that the functional units in the portable energy storage protection plate are not integrated in the power management module.
In this embodiment, the functional unit in the portable energy storage system provided includes a communication subunit, a display subunit and an LED subunit, where the communication subunit is connected to the communication control end and the external device, the display subunit is connected to the display control end, and the LED subunit is connected to the LED control end. The communication subunit comprises 485 communication, CAN communication and Bluetooth communication, receives communication data and sends the communication data to external equipment through a 485 bus, a CAN bus and Bluetooth; the display subunit receives the battery state data and visually displays the battery state data; the LED sub-unit receives the battery state data and controls the display state of the LED indicator lamp based on the battery state data. By integrating 485 communication, CAN communication and Bluetooth communication which are dispersed in the portable energy storage protection board into the battery management system, the integration level of the portable energy storage product is improved.
Referring to fig. 2, fig. 2 is a circuit configuration diagram of a high-side driving unit according to an embodiment of the present application. The high-side driving unit 22 includes a protection subunit 221, a charge-discharge subunit 222, and a parallel operation control subunit 223.
The protection subunit 221 is connected to the battery pack 1, the front-end control unit 21, the data processing unit 23, and the charge/discharge subunit 222 is also connected to the front-end control unit 21, the parallel control subunit 223, and the external charger/load, and the parallel control subunit 223 is connected to the front-end control unit 21, the power supply unit 24, and the external parallel and external charger/load.
The charge/discharge subunit 222 receives the control signal sent from the front-end control unit 21, and controls the charge/discharge state of the battery pack 1 according to the control signal.
The front end control unit 21 is provided with a first control fuse end, the data processing unit 23 is provided with a second control fuse end, and the protection subunit 221 includes a fuse F1 and a switching tube Q1.
The first end of the fuse F1 is connected with the positive electrode of the battery pack, the second end of the fuse F1 is connected with the charge-discharge electronic unit, the third end of the fuse F1 is connected with the second end of the switch tube Q1, the first end of the switch tube Q1 is connected with the first control fusing end and the second control fusing end respectively, and the third end of the switch tube Q1 is grounded.
The front-end control unit 21 further includes a charge control end, a discharge control end, a pre-discharge control end, and a charge detection end, and the charge/discharge subunit 222 includes a switching tube Q2, a switching tube Q3, a switching tube Q4, and a resistor R1.
The third end of the switching tube Q2 is connected with the second end of the fuse F1, the second end of the switching tube Q2 is connected with the second end of the switching tube Q3, the first end of the switching tube Q2 is connected with the charging control end, the first end of the switching tube Q3 is connected with the discharging control end, the third end of the switching tube Q3 is connected with the charging detection end, the parallel operation control unit and the external charger/load positive electrode, the first end of the switching tube Q4 is connected with the pre-discharging control end, the second end of the switching tube Q4 is connected with the common end of the switching tube Q2 and the switching tube Q3, the third end of the switching tube Q4 is connected with the first end of the resistor R1, and the second end of the resistor R1 is respectively connected with the third end of the switching tube Q3, the charging detection end, the parallel operation control unit and the external charger/load positive electrode.
The power supply module is provided with a parallel operation control end and a parallel operation end, and the parallel operation control subunit comprises a switch tube Q5.
The first end of the switching tube Q5 is connected with the parallel machine control end, the second end of the switching tube Q5 is respectively connected with an external charger/load positive end, a charging detection end, the second end of the resistor R1 and the third end of the switching tube Q3, and the third end of the switching tube Q5 is connected with the parallel machine end and the external parallel machine.
The first control fusing end that front end control unit 21 set up is the FUSE pin of front end control unit 21, the second control fusing end that data processing unit 23 set up is the FUSE pin of data processing unit 23, the charge control end that front end control unit 21 set up is the CHG pin, the discharge control end that front end control unit 21 set up is the DSG pin, the pre-release control end of front end control unit 21 is the PDSG pin, the charge detection end that front end control unit 21 set up is the PACK pin, the parallel operation control end that power module set up is EX B+VCC pin, the parallel operation end that power module set up is EX B+pin.
Specifically, the switching tube Q2 is a charging switch, the switching tube Q3 is a discharging switch, when the p+ of the high-side driving unit 22 is connected to a load, the battery pack 1 is discharged, the CHG pin and the DSG pin of the front-end control unit 21 both output high levels, the switching tube Q2 and the switching tube Q3 are simultaneously opened, when a load short circuit or an overdischarge condition of the battery pack 1 occurs, the high level output by the DSG pin of the front-end control unit 21 is converted to output low level, and the switching tube Q3 is turned off to control the high-side driving unit 22 to stop the discharging operation, wherein the load represents a user equipment. When the p+ of the high-side driving unit 22 is an external power supply, the battery pack 1 is charged, the CHG pin and the DSG pin of the front-end control unit 21 both output high level, the switching tube Q2 and the switching tube Q3 are opened simultaneously, when charging overvoltage occurs, the high level output by the CHG pin of the front-end control unit 21 is converted into output low level, and the switching tube Q2 is turned off to control the high-side driving unit 22 to stop the charging operation, wherein the power supply can be 56V. The switch tube Q4 and the pre-discharge resistor R1 form a pre-discharge loop, the pre-discharge resistor R1 plays a role in limiting current and preventing pre-discharge from flowing excessively, and the circuit has the function of charging a back-electrode load capacitor and preventing the battery from being instantly electrified and being short-circuited by the load capacitor.
In the high-side driving unit 22, the FUSE pin of the high-side driving unit 22 is connected with the FUSE pin of the front-end control unit 21, the FUSE pin of the high-side driving unit 22 is connected with the FUSE pin of the data processing unit 23, and if the front-end control unit 21 cannot normally control the switching tube Q2 and the switching tube Q3, the front-end control unit 21 can send control signals through the FUSE pin or the data processing unit 23 to control the three-terminal FUSE F1 to actively FUSE through the FUSE pin, so that permanent protection is realized. The LD pin of the front-end control unit 21 is a load detection port, and detects whether the load is removed after a short circuit occurs, so that protection release is achieved. The PACK pin of the front-end control unit 21 is a charging voltage detection port for detecting whether the charging voltage reaches the charging request voltage, so as to control the switching tube Q2 to be turned on to realize the charging operation. The switching tube Q5 mainly controls current on-off between parallel operation power-up packs, EX_B+VCC is a signal for providing the switching tube Q5, EX_B+ is an external parallel operation power-up pack, and the parallel operation power-up packs are the same portable energy storage system (battery pack and battery management module).
The embodiment of the application provides a portable energy storage system, the high-side driving unit of the portable energy storage system comprises a protection subunit, a charging and discharging subunit and a parallel operation control subunit, wherein the protection subunit is connected with a battery pack, a front end control unit, a data processing unit and the charging and discharging subunit, the charging and discharging subunit is also connected with the front end control unit, the parallel operation control subunit and an external charger/load, and the parallel operation control subunit is connected with the front end control unit, a power supply unit, the external parallel operation and the external charger/load. The protection subunit can monitor and protect the battery pack in real time, ensures that the battery pack works in a safe state, and the charging and discharging subunit can control the charging and discharging states of the battery pack according to the charging and discharging signals sent by the front-end control unit, so that the battery pack is more flexible and efficient to use, the parallel operation is allowed to be carried out by the system through the design of the parallel operation control subunit, and the portable energy storage system is more practical due to the fact that the system can be combined or powered separately according to the power supply requirement.
Referring to fig. 3, fig. 3 is a schematic structural diagram of a portable energy storage system according to an embodiment of the present application.
The portable energy storage system includes at least two battery packs and at least two battery management modules.
The battery pack is connected with the battery management modules in a one-to-one correspondence manner to form at least two battery management modules, one of the at least two battery management modules is selected as a host, the other battery management modules are used as slaves, the battery management modules of the slaves are sequentially connected and then connected with the battery management modules of the host, and the external charger/load negative electrode of the host is connected with the external charger/load negative electrode of the slaves.
The battery management module of the host communicates with the inverter through the CAN bus, P+ and P-are respectively connected with the anode and the cathode of the inverter, and the inverter is connected with external commercial power/power supply. The EX_B+ pin of the host is connected with the P+ of the second slave, the EX_B+ of the second slave is connected with the P+ of the third slave, and the like, the host can be connected with n slaves, the slaves are connected through 485 communication, and master-slave addresses are automatically allocated and identified through software, such as 00-host/01-slave 1/02-slave 2 and the like. More specifically, for safety reasons, when the host detects that there is a parallel operation, all the charge and discharge switching tubes are turned off when the power-on battery pack in the parallel operation system does not establish communication connection, and the switching tubes are turned on or off only by scheduling according to the parallel operation requirement after the communication connection is successfully established.
Referring to fig. 4, fig. 4 is a flow chart of a charge-discharge control method according to an embodiment of the present application. The embodiment of the application provides a charge and discharge control method, which is applied to the portable energy storage system described in the above embodiment, and includes:
and S31, when the battery pack is charged, acquiring the electric quantity of the at least two battery packs as a first electric quantity, and sequentially charging the at least two battery packs according to the first electric quantity and a preset charging principle.
And S32, when discharging, acquiring the electric quantity of the at least two battery packs as a second electric quantity, and sequentially discharging the at least two battery packs according to the second electric quantity and a preset discharging principle.
The first electric quantity represents the current electric quantity state of all battery packs in the portable energy storage system during charging, the second electric quantity represents the current electric quantity state of all battery packs in the portable energy storage system during discharging, the preset charging principle represents the strategy and rule of charging the battery packs in the portable energy storage system, and the preset discharging principle represents the strategy and rule of discharging the battery packs in the portable energy storage system.
Specifically, when multiple batteries are used for charging, the battery pack in the host is preferably fully charged, then the battery pack with the least electric quantity from the battery pack is firstly fully charged, the battery packs are sequentially charged from low to high, if the electric quantity is the same, the battery packs are required to be switched according to the address from low to high, short current is required to achieve the purpose of switching charging, the switching process is completed by the battery management module, the principle is that the battery packs are not charged at the same time, and the preset charging principle is adopted.
When the multi-machine is used for discharging, the battery electric quantity of the battery management module in the host machine is reserved preferentially, the least electric quantity is discharged firstly, then the low electric quantity is discharged sequentially, the high electric quantity is discharged sequentially, when the electric quantity is the same, the bus voltage and the bus current cannot be broken when the battery pack is discharged and switched according to the address from the low electric quantity to the high electric quantity, and the switching process is completed by the battery management module, so that the principle of preset discharging is adopted.
All preset charging principles and preset discharging principles can be set according to practical situations, and the application is not particularly limited.
For example: referring to fig. 2 and 3, when the battery pack in the host 00 is full, if the battery pack in the slave 01 is lower than the battery pack in the slave 02, the host 00 sends a charging command to the slave 01 through 485 communication to open the charging switch Q2 of the slave 01 to charge the battery pack in the slave 01, when the slave 01 is full or has a charging failure, the host 00 switches to the slave 02, sends a command to close the charging switch Q2 of the slave 01 to stop charging the battery pack in the slave 01, and when the external power p+ voltage drops below 20V, the host 00 sends a charging command to the slave 02 through the slave 01 to open the charging switch Q2 of the slave 02 and charge the battery pack in the slave 02, and the charging process is stopped for a while.
When the slave 01 and the slave 02 have the same electric quantity, the slave 01 is preferably discharged according to the address, when the slave 01 is completely discharged or has a discharge fault, the master 00 sends a half-discharge instruction to enable the slave 01 to enter a half-discharge state, the half-discharge state is that a charging switch Q2 is closed, a discharging switch Q3 is opened, the slave 01 enters the half-discharge state and then sends a discharge instruction to the slave 02, the charging switch Q2 and the discharging switch Q3 of the slave 02 are closed, the charging and discharging switch of the slave 02 is closed and then sends a discharge closing instruction to the slave 01, and the slave 01 closes the discharging switch Q3 and exits the half-discharge state.
It should be noted that, the charge-discharge switch control tubes all use N-channel MOS tubes, and the body diodes thereof control charge and discharge in the high-side driving unit 22 in a form of opposite tubes. The half-discharge state is to control the master-slave machine not to charge and discharge each other, the defect is skillfully avoided by utilizing the characteristic of the body diode, and the user can not cut off power when discharging by using the battery pack.
The existing portable energy storage system is usually designed to be used as a host, and in the parallel operation scheme, parallel operation is not integrated into a battery management module, and the parallel operation capacity can limit the number of parallel operation, and the number of parallel operation of power is only one or two. The portable energy storage system provided by the embodiment of the application can be used as a host and a slave, and is integrated with the parallel operation into the battery management module, so that the integration level of the portable energy storage product is improved, and the parallel operation and capacity are realized, but the parallel operation quantity is not limited.
In this embodiment of the application, the portable energy storage system includes two at least battery packs and two at least battery management modules, and the battery packs is connected with battery management module one-to-one, forms two at least battery management module, selects one as the host computer from two at least battery management module, and other battery management module is as the slave machine, and the battery management module of slave machine is connected with the battery management module of host computer after connecting gradually, and the outside charger/load negative pole of host computer is connected with the outside charger/load negative pole of slave machine. The parallel operation strategy based on the portable energy storage system can realize the combination of a plurality of power-on packages, has low cost, and each power-on package can be independently used as a host, thereby improving the convenience of parallel operation.
The embodiment of the application provides an energy storage power supply, which includes the portable energy storage system of the embodiment, and technical details and beneficial effects which are not described in detail in the embodiment of the energy storage power supply can be seen in the portable energy storage system provided by the embodiment of the application.
From the above description of embodiments, it will be apparent to those skilled in the art that the embodiments may be implemented by means of software plus a general purpose hardware platform, or may be implemented by hardware. Those skilled in the art will appreciate that all or part of the processes implementing the methods of the above embodiments may be implemented by a computer program for instructing relevant hardware, where the program may be stored in a computer readable storage medium, and where the program may include processes implementing the embodiments of the methods described above. The storage medium may be a magnetic disk, an optical disk, a Read-Only Memory (ROM), a random access Memory (Random Access Memory, RAM), or the like.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; the technical features of the above embodiments or in the different embodiments may also be combined within the idea of the invention, the steps may be implemented in any order, and there are many other variations of the different aspects of the invention as described above, which are not provided in detail for the sake of brevity; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention.
Claims (11)
1. A portable energy storage system, wherein the portable energy storage system comprises a battery pack and a battery management module;
the battery management module is connected with the battery pack;
the battery management module is integrated with a functional unit, and the functional unit is used for executing the preset function of the portable energy storage system.
2. The portable energy storage system of claim 1, wherein the battery management module further comprises a front end control unit, a high side drive unit, and a data processing unit;
the front end control unit is respectively connected with the battery pack, the high-side driving unit and the data processing unit, and the data processing unit is also respectively connected with the high-side driving unit and the functional unit;
the front-end control unit is used for acquiring battery data of the battery pack and outputting a control signal to the high-side driving unit based on the battery data;
the high-side driving unit is used for receiving the control signal and controlling the charge and discharge states of the battery pack according to the control signal;
the front-end control unit is also used for outputting the battery data to the data processing unit;
the data processing unit is used for receiving the battery data and processing the battery data so that the functional unit executes the preset function according to the processed battery data, wherein the processed battery data comprises communication data and battery state data.
3. The portable energy storage system of claim 2, wherein the data processing unit is provided with a communication control end, a display control end and an LED control end, and the functional unit comprises a communication subunit, a display subunit and an LED subunit;
the communication subunit is respectively connected with the communication control end and external equipment, the display subunit is connected with the display control end, and the LED subunit is connected with the LED control end;
the communication subunit is used for receiving the communication data and sending the communication data to the external equipment through a 485 bus, a CAN bus and Bluetooth;
the display subunit is used for receiving the battery state data and visually displaying the battery state data;
the LED sub-unit is used for receiving the battery state data and controlling the display state of the LED indicator lamp based on the battery state data.
4. The portable energy storage system of claim 2, wherein the battery management module further comprises a power supply unit;
the power supply unit is respectively connected with the battery pack, the high-side driving unit and the data processing unit and is used for supplying power to the battery pack, the high-side driving unit and the data processing unit.
5. The portable energy storage system of claim 4, wherein the high-side drive unit comprises a protection subunit, a charge-discharge subunit, and a parallel operation control subunit;
the protection subunit is connected with the battery pack, the front end control unit, the data processing unit and the charge and discharge subunit, the charge and discharge subunit is also connected with the front end control unit, the parallel operation control subunit and an external charger/load, and the parallel operation control subunit is connected with the front end control unit, the power supply unit, the external parallel operation and the external charger/load;
the charging and discharging subunit is configured to receive the control signal sent by the front-end control unit, and control a charging and discharging state of the battery pack according to the control signal.
6. The portable energy storage system of claim 5, wherein the front end control unit is provided with a first control fuse end, the data processing unit is provided with a second control fuse end, and the protection subunit comprises a fuse F1 and a switching tube Q1;
the first end of the fuse F1 is connected with the positive electrode of the battery pack, the second end of the fuse F1 is connected with the charge-discharge electronic unit, the third end of the fuse F1 is connected with the second end of the switch tube Q1, the first end of the switch tube Q1 is respectively connected with the first control fusing end and the second control fusing end, and the third end of the switch tube Q1 is grounded.
7. The portable energy storage system of claim 6, wherein the front-end control unit further comprises a charging control end, a discharging control end, a pre-discharging control end and a charging detection end, and the charging and discharging subunit comprises a switching tube Q2, a switching tube Q3, a switching tube Q4 and a resistor R1;
the third end of the switch tube Q2 is connected with the second end of the protector F1, the second end of the switch tube Q2 is connected with the second end of the switch tube Q3, the first end of the switch tube Q2 is connected with the charging control end, the first end of the switch tube Q3 is connected with the discharging control end, the third end of the switch tube Q3 is connected with the charging detection end, the parallel operation control subunit and the external charger/load positive electrode, the first end of the switch tube Q4 is connected with the pre-discharging control end, the second end of the switch tube Q4 is connected with the common end of the switch tube Q2 and the switch tube Q3, the third end of the switch tube Q4 is connected with the first end of the resistor R1, and the second end of the resistor R1 is respectively connected with the third end of the switch tube Q3, the charging detection end, the parallel operation control subunit and the external charger/load positive electrode.
8. The portable energy storage system of claim 7, wherein the power module is provided with a parallel operation control end and a parallel operation end, and the parallel operation control subunit comprises a switch tube Q5;
the first end of the switching tube Q5 is connected with the parallel operation control end, the second end of the switching tube Q5 is respectively connected with the external charger/load positive end, the charging detection end, the second end of the resistor R1 and the third end of the switching tube Q3, and the third end of the switching tube Q5 is connected with the parallel operation end and the external parallel operation.
9. The portable energy storage system of claim 1, wherein the portable energy storage system comprises at least two battery packs and at least two battery management modules;
the battery pack is connected with the battery management modules in a one-to-one correspondence manner to form at least two battery management modules, one of the at least two battery management modules is selected as a host, the other battery management modules are used as slaves, the battery management modules of the slaves are sequentially connected and then connected with the battery management modules of the host, and the external charger/load negative electrode of the host is connected with the external charger/load negative electrode of the slaves.
10. A charge and discharge control method applied to the portable energy storage system of claim 9, the method comprising:
when charging, acquiring the electric quantity of the at least two battery packs as a first electric quantity, and charging the at least two battery packs in sequence according to the first electric quantity and a preset charging principle;
and when discharging, acquiring the electric quantity of the at least two battery packs as a second electric quantity, and sequentially discharging the at least two battery packs according to the second electric quantity and a preset discharging principle.
11. An energy storage power supply comprising a portable energy storage system as claimed in any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311717828.4A CN117595454A (en) | 2023-12-13 | 2023-12-13 | Portable energy storage system and energy storage power supply |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202311717828.4A CN117595454A (en) | 2023-12-13 | 2023-12-13 | Portable energy storage system and energy storage power supply |
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| CN202311717828.4A Pending CN117595454A (en) | 2023-12-13 | 2023-12-13 | Portable energy storage system and energy storage power supply |
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