CN112039142A - Multi-parallel battery system management circuit and management method - Google Patents
Multi-parallel battery system management circuit and management method Download PDFInfo
- Publication number
- CN112039142A CN112039142A CN202010755224.9A CN202010755224A CN112039142A CN 112039142 A CN112039142 A CN 112039142A CN 202010755224 A CN202010755224 A CN 202010755224A CN 112039142 A CN112039142 A CN 112039142A
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- China
- Prior art keywords
- battery system
- undervoltage
- circuit
- energy storage
- storage converter
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/00032—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by data exchange
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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
- H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
-
- 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
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/00032—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by data exchange
- H02J7/00036—Charger exchanging data with battery
-
- 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
-
- 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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- 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
- H01M2010/4278—Systems for data transfer from batteries, e.g. transfer of battery parameters to a controller, data transferred between battery controller and main controller
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention provides a management circuit and a management method of a multi-parallel battery system, wherein the management circuit comprises a communication circuit and a wake-up circuit, and an energy storage converter performs information interaction with the multi-parallel battery system through the communication circuit; the battery systems mutually carry out information interaction through the wake-up circuit; when the energy storage converter can charge the undervoltage battery system, the undervoltage battery system is awakened through the awakening circuit after the undervoltage online battery system receives the charging instruction. The invention can fully utilize the charging time of the battery system, prolong the standby time of the under-voltage battery system to the maximum extent, reduce the probability of manual intervention and improve the reliability and stability of the system.
Description
Technical Field
The invention relates to the field of power electronics, in particular to a management circuit and a management method for a multi-parallel battery system.
Background
In the current application of industries such as household energy storage and backup base stations, a plurality of battery systems are connected in parallel, when the voltage of a certain box of batteries is too low, the box of batteries exits parallel connection, is offline and enters a low power consumption mode, namely a sleep mode. The existing practice in the industry is that when charging is available, a PCS sends a charging instruction, and an 'off-line' battery system is awakened at regular time, and if the charging instruction is received, charging is started. Otherwise, the low power consumption mode is continuously entered.
Under the existing method, if the system of the under-voltage offline dormancy needs to be charged in time, the system needs to be frequently awakened to detect whether the charging can be carried out, so that the power consumption of the system is increased, the under-voltage battery is further excessive in power consumption, and finally the battery can not be awakened by self (insufficient power supply) any more, and manual intervention is needed. If the time interval for system wake-up is extended in order to reduce power consumption, this may result in: when charging is possible, the system does not wake up; when awake, the charging opportunity has been missed. The chances of enabling charging of an undervoltage "offline" dormant system are greatly reduced.
Disclosure of Invention
The invention aims to provide a multi-parallel battery system management circuit and a management method which can fully utilize the chargeable opportunity of a battery and prolong the standby time of an under-voltage battery to the maximum extent, and are used for solving the problems of high probability of manual intervention and few charging opportunities in the prior art.
In order to achieve the aim, the invention provides a management circuit of a multi-parallel battery system, which comprises a communication circuit and a wake-up circuit, wherein an energy storage converter is in information interaction with the multi-parallel battery system through the communication circuit; the battery systems mutually carry out information interaction through the wake-up circuit;
when the energy storage converter can charge the undervoltage battery system, the undervoltage battery system is awakened through the awakening circuit after the undervoltage online battery system receives the charging instruction.
Optionally, when a certain battery system is under-voltage, the charging switch corresponding to the battery system is turned off, the battery system enters an offline sleep state, and communication between the battery system and the energy storage converter is interrupted.
Optionally, after the undervoltage battery system is awakened, the host in the multiple parallel battery system sends an instruction to control the conduction of the charging switch corresponding to the undervoltage battery system, and the energy storage converter charges the undervoltage battery system.
The invention also provides a management method of the multi-parallel battery system, wherein the energy storage converter performs information interaction with the multi-parallel battery system through the communication circuit; the battery systems mutually carry out information interaction through the wake-up circuit;
when the energy storage converter can charge the undervoltage battery system, the undervoltage battery system is awakened through the awakening circuit after the undervoltage online battery system receives the charging instruction.
Optionally, when a certain battery system is under-voltage, the charging switch corresponding to the battery system is turned off, the battery system enters an offline sleep state, and communication between the battery system and the energy storage converter is interrupted.
Optionally, after the undervoltage battery system is awakened, the host in the multiple parallel battery system sends an instruction to control the conduction of the charging switch corresponding to the undervoltage battery system, and the energy storage converter charges the undervoltage battery system.
Compared with the prior art, the invention has the following advantages: the energy storage converter performs information interaction with the multi-parallel battery system through the communication circuit; the battery systems mutually carry out information interaction through the wake-up circuit; when the energy storage converter can charge the undervoltage battery system, the undervoltage battery system is awakened through the awakening circuit after the undervoltage online battery system receives the charging instruction. The invention can fully utilize the time when the battery can be charged, prolong the standby time of the undervoltage battery to the maximum extent, reduce the probability of manual intervention and improve the reliability and stability of the system.
Drawings
FIG. 1 is a schematic diagram of a management circuit for a multiple parallel battery system according to the present invention;
Detailed Description
Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, but the present invention is not limited to only these embodiments. The invention is intended to cover alternatives, modifications, equivalents and alternatives which may be included within the spirit and scope of the invention.
In the following description of the preferred embodiments of the present invention, specific details are set forth in order to provide a thorough understanding of the present invention, and it will be apparent to those skilled in the art that the present invention may be practiced without these specific details.
The invention is described in more detail in the following paragraphs by way of example with reference to the accompanying drawings. It should be noted that the drawings are in simplified form and are not to precise scale for the purpose of facilitating and clearly explaining the embodiments of the present invention.
As shown in fig. 1, a schematic diagram of a management circuit of a multi-parallel battery system is illustrated, which includes a communication circuit and a wake-up circuit, wherein an energy storage converter PCS performs information interaction with the multi-parallel battery system through the communication circuit; the battery systems mutually exchange information through the wake-up circuit. The energy storage converter PCS carries out information interaction with the battery system through the communication circuit RS485/CAN, and the battery systems carry out information interaction through the wake-up circuit RS 485/CAN. When a certain battery system is under-voltage, the corresponding switch is disconnected, the offline sleep state is entered, and the communication with the energy storage converter PCS is also interrupted at the moment.
When the PCS CAN charge the battery system, a charging instruction is sent through the communication circuit RS485/CAN, and after the online battery system receives the charging instruction, the offline battery system is awakened through the awakening circuit RS 485/CAN. When the undervoltage battery system is awakened, the host in the multi-parallel battery system sends an instruction to control the charging switch corresponding to the undervoltage battery system to be switched on, and the energy storage converter PCS immediately charges the undervoltage battery system.
Although the embodiments have been described and illustrated separately, it will be apparent to those skilled in the art that some common techniques may be substituted and integrated between the embodiments, and reference may be made to one of the embodiments not explicitly described, or to another embodiment described.
The above-described embodiments do not limit the scope of the present invention. Any modification, equivalent replacement, and improvement made within the spirit and principle of the above-described embodiments should be included in the protection scope of the technical solution.
Claims (6)
1. A management circuit of a multi-parallel battery system is characterized in that: the energy storage converter is in information interaction with a multi-parallel battery system through the communication circuit; the battery systems mutually carry out information interaction through the wake-up circuit;
when the energy storage converter can charge the undervoltage battery system, the undervoltage battery system is awakened through the awakening circuit after the undervoltage online battery system receives the charging instruction.
2. The management circuit of a multiple parallel battery system of claim 1, wherein: when a certain battery system is under-voltage, the charging switch corresponding to the battery system is switched off, the battery system enters an offline dormant state, and the communication between the battery system and the energy storage converter is interrupted.
3. The management circuit of a multiple parallel battery system of claim 2, wherein: when the undervoltage battery system is awakened, the host in the multi-parallel battery system sends an instruction to control the charging switch corresponding to the undervoltage battery system to be switched on, and the energy storage converter charges the undervoltage battery system.
4. A management method of a multi-parallel battery system is characterized in that: the energy storage converter performs information interaction with the multi-parallel battery system through the communication circuit; the battery systems mutually carry out information interaction through the wake-up circuit;
when the energy storage converter can charge the undervoltage battery system, the undervoltage battery system is awakened through the awakening circuit after the undervoltage online battery system receives the charging instruction.
5. The management method of a multiple parallel battery system according to claim 4, characterized in that: when a certain battery system is under-voltage, the charging switch corresponding to the battery system is switched off, the battery system enters an offline dormant state, and the communication between the battery system and the energy storage converter is interrupted.
6. The management method of a multiple parallel battery system according to claim 4, characterized in that: when the undervoltage battery system is awakened, the host in the multi-parallel battery system sends an instruction to control the charging switch corresponding to the undervoltage battery system to be switched on, and the energy storage converter charges the undervoltage battery system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010755224.9A CN112039142A (en) | 2020-07-31 | 2020-07-31 | Multi-parallel battery system management circuit and management method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010755224.9A CN112039142A (en) | 2020-07-31 | 2020-07-31 | Multi-parallel battery system management circuit and management method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112039142A true CN112039142A (en) | 2020-12-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010755224.9A Pending CN112039142A (en) | 2020-07-31 | 2020-07-31 | Multi-parallel battery system management circuit and management method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112039142A (en) |
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2020
- 2020-07-31 CN CN202010755224.9A patent/CN112039142A/en active Pending
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