CN112490519A - High-instantaneity synchronous acquisition lithium battery management system - Google Patents
High-instantaneity synchronous acquisition lithium battery management system Download PDFInfo
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- CN112490519A CN112490519A CN202011322434.5A CN202011322434A CN112490519A CN 112490519 A CN112490519 A CN 112490519A CN 202011322434 A CN202011322434 A CN 202011322434A CN 112490519 A CN112490519 A CN 112490519A
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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
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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
- H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
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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
- 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
Abstract
The invention provides a high-instantaneity synchronous collection lithium battery management system which comprises a power module management unit, a battery cluster management unit, a high-voltage control box, a battery stack management unit, a monitoring platform and an energy storage converter. The whole system is divided into three layers of networks corresponding to the three-layer architecture, the first layer of network is a network between the battery module management unit and the battery cluster management unit, the second layer of network is a network between the battery cluster management unit and the battery stack management unit, and the third layer of network is a network between the battery stack management unit and the monitoring background and between the battery stack management unit and the energy storage converter. The management system has clear whole network architecture, strong accessibility expansibility and can support the design of a plurality of batteries. And the network hierarchy is clear, which is convenient for positioning problems.
Description
Technical Field
The invention relates to the field of battery management, in particular to a lithium battery management system.
Background
In recent years, lithium iron phosphate batteries are gradually popularized and used in power generation side, power grid side and user side energy storage. The lithium ion battery energy storage is the most feasible technical route in the development of the current energy storage products. The lithium ion battery has the advantages of high energy density, strong cruising ability, better battery multiplying power performance, small self-discharge, no memory effect, wide working temperature range, quick charge and discharge, long service life, no environmental pollution, relatively easy manufacture and the like, is called as a green battery, and is more suitable for being used on the energy storage side.
The battery management system integrates the monitoring and the management of the battery pack, ensures the safety and the reliability of the battery and operates in the optimal state. Through effectual battery management, can improve the life of battery, can make battery system and the better cooperation of generating electricity side, electric wire netting side, user side simultaneously.
However, in the current battery management system, the information transmission efficiency between each level of management units is low, fine management cannot be performed on the management units, and huge loss is caused in the long-term operation process.
Disclosure of Invention
In order to solve the problems, the invention provides a high-instantaneity synchronous acquisition lithium battery management system which can ensure the synchronism and instantaneity of key acquisition information, has a wide application range and clear network hierarchy and is convenient to position.
In order to achieve the purpose, the technical scheme of the invention is as follows:
a high real-time synchronous acquisition lithium battery management system comprises:
the battery module management unit is used for monitoring voltage parameters and temperature parameters of each battery in the battery module and distributed control of the module fan;
the battery cluster management unit is used for counting and analyzing the information of the whole cluster of battery modules, thermally managing the battery modules, logically controlling each primary discrete device in the high-voltage control box and coordinately controlling the high-voltage control box and the battery stack management unit;
a stack management unit for independently controlling each stack and performing coordination control between the stacks;
the monitoring platform is used for displaying key parameters and alarm information transmitted by the cell stack management unit and performing human-computer interaction control on the cell stack management unit;
the battery module management unit, the battery cluster management unit and the battery stack management unit sequentially form a three-layer management structure of the management system from bottom to top; the battery module management unit and the battery cluster management unit are connected in a daisy chain bidirectional ring network communication mode to form a first-layer network, the battery cluster management unit and the battery stack management unit are connected in an Ethernet communication mode to form a second-layer network, and the battery stack management unit and the monitoring platform are connected in an Ethernet communication mode to form a third-layer network; and the third layer network also comprises a GOOSE communication connection mode of the battery stack management unit and the energy storage converter.
Furthermore, an AFE management chip is integrated in each of the battery module management unit and the battery cluster management unit, and the battery module management unit and the battery cluster management unit form a hand-in-hand double-loop network through the AFE management chip.
Furthermore, each battery cluster management unit is respectively connected with an A network switch and a B network switch, meanwhile, a battery stack management unit is also connected with the A network switch and the B network switch, and the battery stack management unit acquires data information of each battery cluster in the whole battery stack through the A network switch and the B network switch.
Furthermore, the cell stack management unit is connected with the monitoring platform through an independent network, so that the monitoring platform can acquire data of the cell stack management unit, and the cell stack management unit is subjected to human-computer interaction control through a human-computer interaction module in the monitoring platform.
Further, still include the high-voltage control case, the battery cluster management unit sets up inside the high-voltage control case, still be equipped with a plurality of contactor and control connection cable in the high-voltage control case.
The system further comprises a communication and power supply system, wherein the power supply system comprises a battery cluster management unit power supply system, a battery stack management unit power supply system, a fan driving power supply and a power supply system inside the high-voltage control box.
Furthermore, the battery module management unit comprises a battery characteristic acquisition module, a battery module fan control system, a communication cable, a prefabricated cable and a connector.
Furthermore, the battery cluster management unit comprises a minimum management system, an opening acquisition unit, an outlet control unit, a communication interface unit, an insulation monitoring unit, a high-voltage acquisition unit and an indicator light.
Furthermore, the cell stack management unit comprises a cell stack communication and master control system, a cell stack outlet control unit and a cell stack inlet acquisition unit.
Compared with the prior art, the invention has the beneficial effects that:
1. the whole network architecture of the management system is clear, the accessibility expansibility is strong, and the design of a plurality of batteries can be supported; and the network hierarchy is clear, which is convenient for positioning problems.
2. The communication between the battery module management unit and the battery cluster management unit of the management system mainly forms a hand-in-hand double-loop network through a private protocol, and the management system has the function of normal communication of single-node broken links; an AFE management chip is also integrated in the battery cluster management unit, so that the battery module management unit and the battery cluster management unit of the whole cluster directly form a double-loop network, all data can be read back to the battery cluster management unit at the same time through a private protocol, and the synchronism and real-time performance of key acquisition information are improved.
3. The management system adopts a new three-layer three-network architecture, the networking structure is clear, the architecture can realize the self-addressing function of the battery module management unit, the address setting workload is greatly reduced, the engineering implementation is convenient, the system expansion and maintenance are enhanced, the layered fault recording function is supported, the problem of positioning is convenient, the 61850 communication mode is supported, and the access is simple and convenient.
4. The real-time performance of the data of the management system improves the real-time performance of SOC and other core parameter estimation, and is more convenient for the protection control and management of the system.
Drawings
FIG. 1 is a schematic diagram of a management system according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a management system communication networking provided by an embodiment of the invention;
fig. 3 is a communication schematic diagram of a real-time synchronous acquisition system of a battery cluster management unit according to an embodiment of the present invention;
the same reference numbers will be used throughout the drawings to refer to the same or like elements or structures, wherein:
1. a cell stack; 2. a battery cluster; 3. a battery module; 4. a direct current bus; 5. a, a network switch; 6. b, a network switch.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
As shown in fig. 1, an embodiment of the present invention provides a high-instantaneity synchronous collection lithium battery management system, where the management system includes a power module management unit, a battery cluster management unit, a high-voltage control box, a battery stack management unit, a monitoring platform, and an energy storage converter. The battery stack 1 comprises a plurality of battery clusters 2 which are connected in parallel on a direct current bus 4, each battery cluster 2 comprises a plurality of battery modules 3 according to actual batteries, and each battery module management unit is responsible for monitoring one battery module 3 on each battery cluster 2.
A high-voltage control box is arranged between each battery cluster and the direct current bus to realize the connection protection control between the direct current system and the batteries. The high-voltage control box is internally integrated with the primary discrete devices such as the battery cluster management unit, the contactor and the like. The battery cluster management unit is responsible for collecting and managing characteristic data of the whole cluster of battery modules and carrying out fan control on the battery modules according to heating conditions to achieve thermal management. The battery stack management unit is used for collecting data of each battery cluster of the whole battery stack, controlling and managing the battery stack and coordinating the states of a plurality of battery stacks. The key information of the cell stack management unit can be checked through the monitoring platform, and meanwhile, the cell stack can be directly controlled through the monitoring platform. And the battery stack management unit and the energy storage converter directly carry out GOOSE communication and have quick response.
In the embodiment, the whole system is divided into three layers of networks corresponding to a three-layer architecture, the first layer of network is a network between the battery module management unit and the battery cluster management unit, the second layer of network is a network between the battery cluster management unit and the battery stack management unit, and the third layer of network is a network between the battery stack management unit and the monitoring platform as well as the energy storage converter. The whole network architecture is clear, the accessibility expansibility is strong, and the design of a plurality of batteries can be supported. And the network hierarchy is clear, which is convenient for positioning problems.
In the embodiment, the battery module management unit can be adapted to battery modules with various numbers according to different battery module conditions, and the application range is wide.
In the embodiment, the battery module management unit automatically takes electricity from the battery without external power supply, so that the wiring workload is saved and the construction is simple and convenient.
In the embodiment, the battery cluster management unit can automatically address the battery module management unit, so that huge workload of address setting is saved.
In the embodiment, the battery stack management unit supports plug-in expansion, has strong peripheral equipment signal access capacity and is suitable for various running conditions.
As shown in fig. 2, a hand-in-hand double loop network is formed between a battery module management unit and a battery cluster management unit in the management system according to the embodiment of the present invention through a private protocol; each battery cluster management unit supports double networks and is respectively connected with the A network switch 5 and the B network switch 6, meanwhile, the battery stack management unit is also connected with the A network switch 5 and the B network switch 6 in a double network mode, and the battery stack management unit can conveniently and quickly acquire data information of each battery cluster of the whole battery stack. The battery stack management unit is directly connected with the monitoring platform through an independent network, and data acquisition and man-machine interaction control of the battery stack management unit by the monitoring unit are achieved.
In the embodiment of the networking mode provided by the invention, the monitoring platform can directly acquire the data information collected by each battery cluster management unit.
In the networking mode provided by the embodiment of the invention, the communication between the battery module management unit and the battery cluster management unit has the function of normal single-node broken link communication.
As shown in fig. 3, each battery module management unit is internally integrated with an AFE management chip, and the AFE management chip is also integrated in the battery cluster management unit in the embodiment of the present invention, so that the battery module management unit and the battery cluster management unit of the whole cluster directly form a dual-loop network, and all data can be read and retrieved to the battery cluster management device at the same time through a private protocol.
In the embodiment, the high-real-time acquisition scheme provided by the invention has double-loop network expansibility within a system tolerance range.
In the embodiment, the high real-time acquisition scheme provided by the invention is not limited to the double-loop network in the embodiment, and also comprises other similarly expanded integrated usage.
The high-instantaneity synchronous acquisition lithium battery management system provided by the invention can also be applied to other battery acquisition systems, and is not limited to the systems listed in the embodiments of the invention.
It will be appreciated by those skilled in the art that the foregoing is merely illustrative of the preferred embodiments of the invention, and that modifications within the spirit and scope of the invention are possible.
Claims (9)
1. The utility model provides a high real-time synchronous acquisition lithium battery management system which characterized in that includes:
the battery module management unit is used for monitoring voltage parameters and temperature parameters of each battery in the battery module and distributed control of the module fan;
the battery cluster management unit is used for counting and analyzing the information of the whole cluster of battery modules, thermally managing the battery modules, logically controlling each primary discrete device in the high-voltage control box and coordinately controlling the high-voltage control box and the battery stack management unit;
a stack management unit for independently controlling each stack and performing coordination control between the stacks;
the monitoring platform is used for displaying key parameters and alarm information transmitted by the cell stack management unit and performing human-computer interaction control on the cell stack management unit;
the battery module management unit, the battery cluster management unit and the battery stack management unit sequentially form a three-layer management structure of the management system from bottom to top; the battery module management unit and the battery cluster management unit are connected in a daisy chain bidirectional ring network communication mode to form a first-layer network, the battery cluster management unit and the battery stack management unit are connected in an Ethernet communication mode to form a second-layer network, and the battery stack management unit and the monitoring background are connected in an Ethernet communication mode to form a third-layer network; and the third layer network also comprises a GOOSE communication connection mode of the battery stack management unit and the energy storage converter.
2. The high-instantaneity synchronous collection lithium battery management system according to claim 1, characterized in that: each battery module management unit and the battery cluster management unit are internally integrated with an AFE (automatic back-end protection) management chip, and the battery module management units and the battery cluster management units form a hand-in-hand double-loop network through the AFE management chips.
3. The high-instantaneity synchronous collection lithium battery management system according to claim 1, characterized in that: each battery cluster management unit is respectively connected with an A network switch and a B network switch, and meanwhile, the battery stack management unit is also connected with the A network switch and the B network switch, and the battery stack management unit acquires data information of each battery cluster in the battery stack through the A network switch and the B network switch.
4. The high-instantaneity synchronous collection lithium battery management system according to claim 1, characterized in that: the battery stack management unit is connected with the monitoring platform through an independent network, so that the monitoring platform can acquire data of the battery stack management unit, and the battery stack management unit is subjected to human-computer interaction control through a human-computer interaction module in the monitoring platform.
5. The high-instantaneity synchronous collection lithium battery management system according to claim 1, characterized in that: still include the high-voltage control case, the battery cluster management unit sets up inside the high-voltage control case, still be equipped with a plurality of contactor and control connection cable in the high-voltage control case.
6. The high-instantaneity synchronous collection lithium battery management system according to claim 5, characterized in that: the power supply system comprises a battery cluster management unit power supply system, a battery stack management unit power supply system, a fan driving power supply and a power supply system inside the high-voltage control box.
7. The high-instantaneity synchronous collection lithium battery management system according to claim 1, characterized in that: the battery module management unit comprises a battery characteristic acquisition module, a battery module fan control system, a communication cable, a prefabricated cable and a connector.
8. The high-instantaneity synchronous collection lithium battery management system according to claim 1, characterized in that: the battery cluster management unit comprises a minimum management system, an opening acquisition unit, an outlet control unit, a communication interface unit, an insulation monitoring unit, a high-voltage acquisition unit and an indicator lamp.
9. The high-instantaneity synchronous collection lithium battery management system according to claim 1, characterized in that: the cell stack management unit comprises a cell stack communication and master control system, a cell stack outlet control unit and a cell stack inlet acquisition unit.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102842914A (en) * | 2012-08-02 | 2012-12-26 | 中国电力科学研究院 | Energy storage power station monitoring system |
| CN204330931U (en) * | 2015-01-08 | 2015-05-13 | 南方电网科学研究院有限责任公司 | A kind of electrical network energy storage testing apparatus |
| CN110588434A (en) * | 2019-09-17 | 2019-12-20 | 阳光电源股份有限公司 | Energy storage system and battery management method and system thereof |
| WO2020088449A1 (en) * | 2018-10-30 | 2020-05-07 | 富能宝能源科技有限公司 | Battery energy storage bms system enabling dual path-based information sampling and detection and protection control |
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- 2020-11-23 CN CN202011322434.5A patent/CN112490519B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102842914A (en) * | 2012-08-02 | 2012-12-26 | 中国电力科学研究院 | Energy storage power station monitoring system |
| CN204330931U (en) * | 2015-01-08 | 2015-05-13 | 南方电网科学研究院有限责任公司 | A kind of electrical network energy storage testing apparatus |
| WO2020088449A1 (en) * | 2018-10-30 | 2020-05-07 | 富能宝能源科技有限公司 | Battery energy storage bms system enabling dual path-based information sampling and detection and protection control |
| CN110588434A (en) * | 2019-09-17 | 2019-12-20 | 阳光电源股份有限公司 | Energy storage system and battery management method and system thereof |
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