CN114448059A - Management method of multi-module energy storage power supply - Google Patents
Management method of multi-module energy storage power supply Download PDFInfo
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- CN114448059A CN114448059A CN202210166452.1A CN202210166452A CN114448059A CN 114448059 A CN114448059 A CN 114448059A CN 202210166452 A CN202210166452 A CN 202210166452A CN 114448059 A CN114448059 A CN 114448059A
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- battery
- module
- power supply
- energy storage
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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
- 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
- H02J7/0024—Parallel/serial switching of connection of batteries to charge or load circuit
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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
- H02J7/0031—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits using battery or load disconnect 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
- 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
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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
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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)
Abstract
The invention discloses a management method of a multi-module energy storage power supply, which comprises the following steps: the single working mode comprises the following steps: the energy storage power supply host outputs the energy independently, and an input/output control module in the battery module closes an input/output channel; the general working mode is as follows: when correct communication connection is established between the energy storage power supply host and the battery modules, the battery modules feed back voltage and residual capacity parameter information of the battery units to a main control module of the energy storage power supply host through the communication modules, the main control module selects the battery module with the highest voltage through comparing voltage values and sends signals to the battery module with the highest voltage, after receiving the signals, the selected battery module opens an output channel through an input and output control module, the battery units are communicated with the main battery unit to provide power for the main battery unit, and input and output channels of other unselected battery modules are kept closed continuously. Therefore, the normal work of the energy storage power supply host is ensured, and the use safety is ensured.
Description
The technical field is as follows:
the invention relates to the technical field of energy storage power supply products, in particular to a management method of a multi-module energy storage power supply.
Background art:
a portable energy storage power supply, also called a portable outdoor power supply, is a backup or emergency power supply that typically does not weigh more than 20 kg. Generally, a lithium ion battery is used as an energy storage component, and input charging (such as alternating current 220V, vehicle-mounted 12V, and the like) is performed by using alternating current or direct current, and output charging is performed by using alternating current or direct current (such as alternating current 220V, direct current 12V, direct current 5V, and the like).
The portable energy storage power supply is generally used as a standby power supply for outdoor travel, earthquake resistance and disaster prevention. When a user plays and works outdoors, the portable energy storage power supply can charge and illuminate electronic equipment such as a mobile phone and the like. In the non-use state, the charging device can be charged by commercial power or vehicle-mounted power supply. See, for example, patent nos.: 202021607613.9 which discloses a housing assembly of an energy storage power supply and the energy storage power supply.
The existing energy storage power supply also has a problem that when the energy storage power supply is output outwards for a long time or is output outwards with high power, the electric energy of the built-in battery cannot be supplemented, and the built-in battery is easy to exhaust. To address this problem, the present inventors contemplate adding one or more battery modules to the energy storage power supply. Under the usual condition, the energy storage power supply exclusive use can, when meetting the long-time external output of energy storage power supply, perhaps carrying out high-power when exporting outward, be connected battery module and energy storage power supply, utilize battery module to carry out effective replenishment to the electric quantity of energy storage power supply to improve the operating time of whole energy storage power supply and to deal with various emergency. However, there is no perfect management method for connecting a plurality of battery modules to an energy storage power source, and the conventional Battery Management System (BMS) cannot cope with such a situation. Because the voltage of the energy storage power supply and the current voltage of the battery units in the battery module can not be guaranteed to be consistent, if the energy storage power supply and the battery module are directly connected in parallel, circulation among the battery units with different voltages can be caused, the battery is burnt, and even dangerous conditions such as fire, explosion and the like occur. Therefore, the present inventors have proposed the following solutions for such a situation.
The invention content is as follows:
the invention aims to provide a management method of a multi-module energy storage power supply.
In order to solve the technical problems, the invention adopts the following technical scheme: a management method of a multi-module energy storage power supply comprises the following steps: energy storage power host computer and a plurality of battery module of being connected with energy storage power host computer, energy storage power include: the main battery management system comprises a main battery unit, a main control module, a main battery management module, a power input interface and a power output interface; the battery module include: battery cell, input/output control module, battery management module and communication module, battery cell in the battery module is connected with the main battery unit in the host computer, and communication module is connected with host system, and its input/output channel is controlled through input/output control module to the battery module: according to different working modes, the management method of the energy storage power supply comprises the following steps: the single working mode is as follows: the energy storage power supply host outputs the energy to the outside independently, and when correct communication connection is not established between the energy storage power supply host and the battery module, the input and output control module in the battery module closes the input and output channel; the general working mode is as follows: when correct communication connection is established between the energy storage power supply host and the battery modules, the battery modules feed back voltage and residual capacity parameter information of the battery units to a main control module of the energy storage power supply host through the communication modules, the main control module selects the battery module with the highest voltage through comparing voltage values and sends a signal to the battery module with the highest voltage, after receiving the signal, the selected battery module opens an output channel through an input and output control module, the battery units are communicated with the main battery unit to provide power for the main battery unit, and input and output channels of other unselected battery modules are kept closed continuously.
Further, in the above technical solution, in a general working mode, when the energy storage power supply host exceeds a set power output, the main control module of the energy storage power supply host continuously scans all connected battery modules, and when the voltage in the unselected battery module is kept equal to the voltage of the currently selected battery module, the input/output control module of the battery module with the same voltage opens its output channel to participate in the power output work of the energy storage power supply host.
Further, in the above technical solution, the energy storage power supply host and the battery module are connected through an interface, the interface includes seven contacts, and each contact is defined as follows: g1: a communication power supply 5V +; g2: a communication power supply GND; g3: communication identification ID; g4: DATA +; g5: DATA-; g6: a power supply positive electrode; g7: the negative pole of the power supply.
After the technical scheme is adopted, a host of an energy storage power supply can be configured with a plurality of battery modules, and the host of the energy storage power supply is charged through the battery modules. Meanwhile, the invention ensures that only the battery module with the highest voltage is selected in a common mode through a communication isolation mode. In the special operation mode, two or more battery modules may be incorporated so as to participate in the power output operation. Therefore, the normal work of the energy storage power supply host can be ensured, the circulation condition among the battery units with different voltages can not be caused, and the use safety is ensured.
Description of the drawings:
FIG. 1 is a system schematic of the present invention;
FIG. 2 is a schematic external view of an embodiment of the present invention;
FIG. 3 is a schematic interface diagram of an embodiment of the present invention;
FIG. 4 is a diagram of an interface communication power isolation circuit according to an embodiment of the present invention.
The specific implementation mode is as follows:
the invention is further illustrated below with reference to specific embodiments and the accompanying drawings.
The invention relates to a management method of a multi-mode group energy storage power supply, which is shown in figure 1 and comprises the following steps: the energy storage power supply comprises a main machine 1 of the energy storage power supply and a plurality of battery modules 2 connected with the main machine 1 of the energy storage power supply.
The main machine 1 of the energy storage power supply comprises: the main battery unit 10, the main control module 11, the main battery management module 12, the power input interface 13 and the power output interface 14. The input interface 13 of the power supply can adopt alternating current or direct current for input charging (such as alternating current 220V, vehicle-mounted 12V and the like), and the output interface 14 of the power supply can output alternating current or direct current (such as alternating current 220V, direct current 12V, direct current 5V and the like).
The battery unit 20 of the battery module 2 is connected to the main battery unit 10 of the host 1, the communication module 23 is connected to the main control module 11, and the input/output channel of the battery module 2 is controlled by the input/output control module 21.
The following specifically describes the management method of the energy storage power supply according to different working modes:
the single working mode is as follows: the main body 1 of the energy storage power supply can be independently used, and can be normally charged and independently output as a conventional energy storage power supply. At this time, when the host 1 of the energy storage power supply and the battery module 2 do not establish correct communication connection, the input/output control module 21 in the battery module 2 closes the input/output channel.
The general working mode is as follows: when the host 1 and the battery module 2 are connected, and correct communication connection is established between the host 1 and the battery module 2, the battery module 2 feeds back the voltage and residual capacity parameter information of the battery unit 20 to the main control module 11 of the host 1 through the communication module 23, the main control module 11 selects the battery module 2 with the highest voltage through comparing voltage values, and sends a signal to the battery module 2 with the highest voltage, after the selected battery module 2 receives the signal, an output channel is opened through the input and output control module 21, the battery unit 20 is communicated with the main battery unit 10 to provide power for the main battery unit, and the input and output channels of other unselected battery modules 2 are kept closed continuously.
The special working mode is as follows: in a general working mode, when the host 1 of the energy storage power supply exceeds a set power output, the main control module 11 of the host 1 continuously scans all the connected battery modules 2, and when the voltage in the unselected battery modules 2 is consistent with the voltage of the currently selected battery module 2, the input/output control module 21 of the battery module 2 with the consistent voltage opens an output channel thereof to participate in the power output work of the host 1. Therefore, the power output sharing function can be provided for the battery module in use, the working pressure of a single battery module is reduced, and the high-power output work of the host 1 of the energy storage power supply is ensured.
After the host 1 of the energy storage power source is connected to the battery module 2, the battery module 2 can charge the main battery unit 10 after the voltage of the main battery power source 10 is reduced to the set voltage under the condition that no external power source is used for charging the main battery unit 10.
As described above, in order to implement the present invention, it is necessary to ensure the connection relationship between the energy storage power supply host 1 and the battery module 2. The invention proposes a special interface.
Referring to fig. 2, which is a schematic diagram of the energy storage power supply host 1 of the present invention, a plurality of interfaces G connected to the battery modules 2 are disposed thereon, and as shown in fig. 3, the interfaces G include seven contacts, each of which is defined as follows:
g1: a communication power supply 5V +;
g2: a communication power supply GND;
g3: communication identification ID;
g4: DATA +;
g5: DATA-;
g6: a power supply positive electrode;
g7: a power supply cathode;
as shown in fig. 4, this is a communication power isolation circuit diagram, in which G1 and G2 provide 5V power for communication operation, and communication is isolated by the optical couplers U1 and U2. G3 identifies the different battery modules 2 by G3 as the identification IDs of the different battery modules 2, and the identification method can be determined by different pulse signals. The G4 and G5 are used as output transmission ports to provide data exchange and transmission functions between the battery modules 2 and between the host 1 of the energy storage power supply and the battery modules 2, which can be realized by directly adopting the data transmission isolation chip ADUM 1250. G6 and G7 are positive and negative terminals for power supply output, and normally, no power supply is output from outside, and only after the energy storage power supply host 1 and the battery module 2 are connected and the reconnection is confirmed, there is power supply output from G6 and G7.
It should be understood that the above description is only exemplary of the present invention, and is not intended to limit the scope of the present invention, which is defined by the appended claims.
Claims (3)
1. A management method of a multi-module energy storage power supply comprises the following steps: host computer (1) of energy storage power and a plurality of battery module (2) of being connected with host computer (1), host computer (1) include: the system comprises a main battery unit (10), a main control module (11), a main battery management module (12), an input interface (13) of a power supply and an output interface (14) of the power supply; the battery module (2) comprises: battery unit (20), input/output control module (21), battery management module (22) and communication module (23), battery unit (20) in battery module (2) are connected with main battery unit (10) in host computer (1), and communication module (23) are connected with main control module (11), and its input/output channel is controlled through input/output control module (21) in battery module (2): the management method of the energy storage power supply is characterized in that according to different working modes:
the single working mode is as follows: the host (1) outputs outwards independently, and when correct communication connection is not established between the host (1) and the battery module (2), the input and output control module (21) in the battery module (2) closes an input and output channel;
the general working mode is as follows: when correct communication connection is established between the host (1) and the battery modules (2), the battery modules (2) feed back the voltage and residual capacity parameter information of the battery units (20) to the main control module (11) of the host (1) through the communication module (23), the main control module (11) selects the battery module (2) with the highest voltage through comparing voltage values, and sends signals to the battery module (2) with the highest voltage, after the selected battery module (2) receives the signals, an output channel is opened through the input and output control module (21), the battery units (20) are communicated with the main battery unit (10) to provide power for the main battery unit, and the input and output channels of other unselected battery modules (2) are continuously kept closed.
2. The method for managing a multi-module energy storage power supply according to claim 1, wherein: in a general working mode, when the host (1) exceeds the set power output, the main control module (11) of the host (1) continuously scans all the connected battery modules (2), and when the voltage in the unselected battery modules (2) is consistent with the voltage of the currently selected battery module (2), the input/output control module (21) of the battery module (2) with the consistent voltage opens the output channel thereof to participate in the power output work of the host (1).
3. The method for managing a multi-module energy storage power supply according to claim 1, wherein: the host (1) is connected with the battery module (2) through an interface, the interface comprises seven contacts, and each contact is defined as follows:
g1: a communication power supply 5V +;
g2: a communication power supply GND;
g3: communication identification ID;
g4: DATA +;
g5: DATA-;
g6: a power supply positive electrode;
g7: the negative pole of the power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210166452.1A CN114448059A (en) | 2022-02-23 | 2022-02-23 | Management method of multi-module energy storage power supply |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210166452.1A CN114448059A (en) | 2022-02-23 | 2022-02-23 | Management method of multi-module energy storage power supply |
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| Publication Number | Publication Date |
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| CN114448059A true CN114448059A (en) | 2022-05-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202210166452.1A Pending CN114448059A (en) | 2022-02-23 | 2022-02-23 | Management method of multi-module energy storage power supply |
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| CN (1) | CN114448059A (en) |
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- 2022-02-23 CN CN202210166452.1A patent/CN114448059A/en active Pending
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