CN111129616A - Battery energy storage BMS system based on dual-path information sampling monitoring and protection control - Google Patents

Battery energy storage BMS system based on dual-path information sampling monitoring and protection control Download PDF

Info

Publication number
CN111129616A
CN111129616A CN201811272118.4A CN201811272118A CN111129616A CN 111129616 A CN111129616 A CN 111129616A CN 201811272118 A CN201811272118 A CN 201811272118A CN 111129616 A CN111129616 A CN 111129616A
Authority
CN
China
Prior art keywords
storage battery
string
battery pack
module
pack string
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201811272118.4A
Other languages
Chinese (zh)
Inventor
周锡卫
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to CN201811272118.4A priority Critical patent/CN111129616A/en
Priority to PCT/CN2019/113994 priority patent/WO2020088449A1/en
Priority to EP19878380.5A priority patent/EP3876333A4/en
Publication of CN111129616A publication Critical patent/CN111129616A/en
Pending legal-status Critical Current

Links

Images

Classifications

    • 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
    • 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
    • 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
    • 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
    • H01M10/482—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte for several batteries or cells 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
    • H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
    • H01M10/486—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte for measuring temperature
    • 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

Landscapes

  • Engineering & Computer Science (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 invention belongs to the technical field of application of electrochemical storage battery energy storage systems, and particularly relates to a storage battery energy storage BMS (battery management system) based on dual-path information sampling monitoring and protection control, wherein each storage battery module single battery monitoring and sampling module in a storage battery string direct current confluence and string balance management and control device collects electric energy parameters such as voltage, current, electric quantity and the like of each storage battery string and all storage battery monomers in real time and temperature parameters and compares the electric energy parameters with operation guarantee parameters preset by an energy storage system to carry out string-level electric energy balance, when the parameters of the single batteries are monitored to reach a set dangerous state parameter range, the corresponding storage battery module single battery monitoring and sampling module directly drives a corresponding storage battery string direct current power line on-off switch and a protection circuit to disconnect the electric power path of a corresponding storage battery string direct current confluence bus bar connected with the storage battery string, the controllability and the safety of the energy storage system are greatly improved while the investment is saved.

Description

Battery energy storage BMS system based on dual-path information sampling monitoring and protection control
Technical Field
The invention belongs to the technical field of electrochemical storage battery energy storage application, and particularly relates to a storage battery energy storage BMS system based on dual-path information sampling monitoring and protection control.
Background
The storage battery energy storage system is an important component of new energy electric power, a smart grid and an energy internet of an electric automobile, and particularly, the electrochemical storage battery energy storage system is formed by connecting a plurality of unit storage battery monomers, and a storage battery pack string enters an energy storage converter device to be charged and discharged so as to be controlled to complete electric power regulation and charging and discharging. Because the physical and chemical characteristics of each storage battery monomer have certain differences and the difference of environmental dimensionality in the installation and operation process, the storage batteries in the storage battery string have inconsistency in voltage and electric quantity, the overall efficiency and utilization rate of the storage battery string are influenced, and potential safety hazards are brought.
Therefore, real-time monitoring of the operation of the storage battery, control of charging and discharging current, and balanced control of the voltage, electric quantity and other electric energy consistency of each storage battery monomer in the storage battery pack string are the keys of safe, healthy and efficient operation of the energy storage system; the battery module management unit BMU is used for detecting the information of the battery monomers in the battery module, the battery cluster management unit BCMS and the BAMS are mostly divided into three levels for management and control, the battery module single battery monitoring and sampling module is used for monitoring the state parameters of the battery in real time and acquiring signals, the battery cluster management unit at the upper level is used for processing the states (voltage, current, temperature, SOC and the like) of the battery cluster, the modules and the single battery, and the charging and discharging process is safely managed; in addition, most of the existing battery management systems BMS monitor each battery cell and the battery pack connected in parallel with the battery cells in real time and perform static or dynamic power equalization in real time, each battery cell and the battery pack connected in parallel with the battery cells are configured with one equalization electronic circuit and a current loop, and a 1MWH battery energy storage system is provided with thousands of equalization electronic circuits and current loops, so that not only is the investment cost greatly increased, but also inestimable risks are caused to the energy storage system by the large number of equalization electronic circuits and current loops.
Disclosure of Invention
In order to overcome the defects of the prior art in energy storage system battery management and save investment on the basis of providing safety, the invention provides a battery energy storage BMS based on dual-path information sampling monitoring and protection control, which mainly comprises the following steps: a storage battery pack string direct current confluence and pack string balance control device, a storage battery pack string monitoring management module, an upper computer communication line, a bidirectional energy storage converter, a storage battery pack string direct current confluence busbar, a bidirectional energy storage converter alternating current power line, a storage battery pack string monitoring management module sampling and control information bus, a power grid, an energy storage system upper computer, a 1 st storage battery pack string 1 st storage battery module, a 1 st storage battery pack string 2 nd storage battery module, a 1 st storage battery pack string mth storage battery module, a 1 st storage battery pack string 1 st storage battery module single battery monitoring and sampling module, a 1 st storage battery pack string 2 nd storage battery module single battery monitoring and sampling module, a 1 st storage battery pack string 1 st storage battery module information acquisition wiring harness, a 1 st storage battery pack string 2 nd storage battery module information acquisition wiring harness, The system comprises a 1 st storage battery pack string mth storage battery module information acquisition wiring harness, a 1 st storage battery pack string direct current power line on-off switch and protection circuit, a 1 st storage battery pack string fast protection control path, a 2 nd storage battery pack string 1 st storage battery module, a 2 nd storage battery pack string 2 nd storage battery module, a 2 nd storage battery pack string mth storage battery module, a 2 nd storage battery pack string 1 st storage battery module single cell monitoring and sampling module, a 2 nd storage battery pack string 2 nd storage battery module single cell monitoring and sampling module, a 2 nd storage battery pack string 1 st storage battery module information acquisition wiring harness, a 1 st storage battery pack string 2 nd storage battery module information acquisition wiring harness, a 2 nd storage battery pack string mth storage battery module information acquisition wiring harness, a 2 nd storage battery pack string direct current power line, A 2 nd storage battery pack string direct-current power line on-off switch and protection circuit, a 2 nd storage battery pack string rapid protection control path, a 1 st storage battery module of an Nth storage battery pack string, a 2 nd storage battery module of an Nth storage battery pack string, a mth storage battery module of an Nth storage battery pack string, a 1 st storage battery module single cell monitoring and sampling module of an Nth storage battery pack string, a 2 nd storage battery module single cell monitoring and sampling module of an Nth storage battery pack string, an 1 st storage battery module information acquisition wiring harness of an Nth storage battery pack string, a 2 nd storage battery module information acquisition wiring harness of an Nth storage battery pack string, an m storage battery module information acquisition wiring harness of an Nth storage battery pack string, an Nth storage battery pack string direct-current power line on-off switch and protection circuit, and an Nth storage battery pack string rapid protection control path, wherein:
the system comprises a storage battery pack string direct-current power line on-off switch and protection circuit 1, a storage battery pack string direct-current power line on-off switch and protection circuit 2, a storage battery pack string direct-current power line on-off switch and protection circuit N, a storage battery pack string direct-current bus bar and a storage battery pack string monitoring management module, wherein the storage battery pack string direct-current bus bar and pack balancing management and control device is arranged in a cabinet body to form a storage battery pack string direct-current bus and pack balancing management and control device for executing storage battery pack string electric energy balancing and safety protection on;
the positive and negative electrodes of two sequentially adjacent storage battery modules of a 1 st storage battery module of a 1 st storage battery string, a 2 nd storage battery module of the 1 st storage battery string and an mth storage battery module of the 1 st storage battery string are connected in series to form a 1 st storage battery string;
the positive and negative electrodes of two sequentially adjacent storage battery modules of a 1 st storage battery module of a 2 nd storage battery pack string, a 2 nd storage battery module of the 2 nd storage battery pack string and an mth storage battery module of the 2 nd storage battery pack string are connected in series to form a 2 nd storage battery pack string;
the positive electrode and the negative electrode of two storage battery modules which are sequentially adjacent to the 1 st storage battery module of the Nth storage battery pack string, the 2 nd storage battery module of the Nth storage battery pack string and the mth storage battery module of the Nth storage battery pack string are connected in series to form an Nth storage battery pack string;
the 1 st storage battery string, the 1 st storage battery module, the 1 st storage battery string, the 2 nd storage battery module, and the 1 st storage battery string, the mth storage battery module are respectively connected with the 1 st storage battery string, the 2 nd storage battery module, and the 1 st storage battery string, the corresponding single storage batteries are respectively connected with the storage battery string monitoring management module through the storage battery string monitoring management module sampling and control information bus, so as to form a 1 st storage battery string all-single storage battery information sampling monitoring communication path, meanwhile, a 1 st storage battery pack string direct-current power line on-off switch and a protection circuit are connected through a 1 st storage battery pack string rapid protection control path to form a 1 st storage battery pack string real-time monitoring and rapid protection direct drive control path;
the 1 st storage battery module single battery monitoring and sampling module of the 2 nd storage battery pack string, the 2 nd storage battery module single battery monitoring and sampling module of the 2 nd storage battery pack string, the mth storage battery module single battery monitoring and sampling module of the 2 nd storage battery pack string are respectively connected with each corresponding single storage battery in the 1 st storage battery module of the 2 nd storage battery pack string, the 2 nd storage battery module of the 2 nd storage battery pack string and the mth storage battery module information acquisition harness of the 2 nd storage battery pack string through the 1 st storage battery module of the 2 nd storage battery pack string, the 2 nd storage battery pack string and the mth storage battery module of the 2 nd storage battery pack string, and are connected with the storage battery pack string monitoring and management module through the storage battery pack string monitoring and management module sampling and control information bus to form a 2 nd storage battery, meanwhile, a 2 nd storage battery pack string direct-current power line on-off switch and a protection circuit are connected through a 2 nd storage battery pack string rapid protection control path to form a 2 nd storage battery pack string real-time monitoring and rapid protection direct drive control path;
the single battery monitoring and sampling module of the 1 st storage battery module of the Nth storage battery pack string, the single battery monitoring and sampling module of the 2 nd storage battery module of the Nth storage battery pack string and the single battery monitoring and sampling module of the mth storage battery module of the Nth storage battery pack string are respectively connected with each corresponding single storage battery in the 1 st storage battery module of the Nth storage battery pack string, the 2 nd storage battery module of the Nth storage battery pack string and the mth storage battery module information acquisition harness of the Nth storage battery pack string through the 1 st storage battery module information acquisition harness of the Nth storage battery pack string, the 2 nd storage battery module of the Nth storage battery pack string and the mth storage battery module information acquisition harness of the Nth storage battery pack string, and are connected with the storage battery pack string monitoring and management module through the storage battery pack string monitoring and control information bus to form a full-single storage battery, meanwhile, the fast protection control path of the Nth storage battery pack string is connected with the on-off switch and the protection circuit of the direct current power line of the Nth storage battery pack string to form a real-time monitoring and fast protection direct drive control path of the Nth storage battery pack string;
the 1 st storage battery pack string is connected with the 1 st storage battery pack string direct-current power line on-off switch and the protection circuit through the 1 st storage battery pack string direct-current power line, and the 1 st storage battery pack string direct-current power line on-off switch and the protection circuit are connected with a power grid through the storage battery pack string direct-current bus bar, the bidirectional energy storage converter and the bidirectional energy storage converter alternating-current power line in sequence to form a 1 st storage battery pack string charging and discharging power path;
the 2 nd storage battery pack string is connected with the 2 nd storage battery pack string direct-current power line on-off switch and the protection circuit through the 2 nd storage battery pack string direct-current power line, and the 2 nd storage battery pack string direct-current power line on-off switch and the protection circuit are connected with a power grid through the storage battery pack string direct-current bus bar, the bidirectional energy storage converter and the bidirectional energy storage converter alternating-current power line in sequence to form a 2 nd storage battery pack string charging and discharging power path;
the N storage battery pack string is connected with an N storage battery pack string direct-current power line on-off switch and a protection circuit through an N storage battery pack string direct-current power line, and the N storage battery pack string direct-current power line on-off switch and the protection circuit are connected with a power grid through a storage battery pack string direct-current bus bar, a bidirectional energy storage converter and a bidirectional energy storage converter alternating-current power line in sequence to form an N storage battery pack string charging and discharging power path;
the storage battery pack string monitoring and management module is respectively connected with a 1 st storage battery pack string 1 storage battery module single battery monitoring and sampling module, a 1 st storage battery pack string 2 storage battery module single battery monitoring and sampling module, a 1 st storage battery pack string m storage battery module single battery monitoring and sampling module, a 2 nd storage battery pack string 1 storage battery module single battery monitoring and sampling module, a 2 nd storage battery pack string 2 storage battery module single battery monitoring and sampling module, a 2 nd storage battery pack string m storage battery module single battery monitoring and sampling module, an Nth storage battery pack string 1 storage battery module single battery monitoring and sampling module, an Nth storage battery pack string 2 storage battery module single battery monitoring and sampling module, an Nth storage battery pack string m storage battery module single battery monitoring and sampling module, a 1 st storage battery pack string direct-current power line on-off switch and a protection circuit through a storage battery pack string monitoring and management module sampling and control information bus, 2, a storage battery set string direct-current power line on-off switch and protection circuit, and an N storage battery set string direct-current power line on-off switch and protection circuit form a communication link for real-time monitoring of each storage battery set string and all storage battery monomers of the whole energy storage system and electric energy balance management control of the storage battery set strings;
the storage battery pack string monitoring and management module is connected with the bidirectional energy storage converter through a bidirectional energy storage converter communication line to form an auxiliary control link for managing and controlling the bidirectional energy storage converter to carry out storage battery charging and discharging power regulation and storage battery pack string electric quantity equalization;
the upper computer of the energy storage system is connected with the storage battery pack string monitoring management module through an upper computer communication line to form a regulation communication link for monitoring and controlling the charging and discharging of the storage battery pack string through the storage battery pack string monitoring management module in real time;
the upper computer of the energy storage system is connected with the bidirectional energy storage converter through an upper computer communication line to form a control link for controlling the charging and discharging of the bidirectional energy storage converter by the upper computer of the energy storage system;
a method for controlling the operation of a battery energy storage BMS system based on dual-path information sampling monitoring and protection control comprises the following steps:
① A storage battery energy storage BMS system based on dual path information sampling monitoring and protection control is powered on and operated, a storage battery string monitoring management module in a storage battery string direct current confluence and string balance management and control device monitors and samples each storage battery string and all storage battery monomers in real time through each storage battery module single battery monitoring sampling module and an energy storage system upper computer;
② when the BMS system is abnormal, alarming and stopping operation;
③ when the BMS system is normal, each battery module single battery monitoring and sampling module continues to operate ④ when monitoring that the parameter of one or more single batteries does not reach the set dangerous state parameter range, otherwise, the corresponding battery module single battery monitoring and sampling module implements control and immediately breaks the power path of the direct current bus bar of the corresponding battery pack string connected by the corresponding battery pack string fast protection control path through the direct current power line on-off switch and the protection circuit of the corresponding battery pack string connected by the corresponding battery pack string fast protection control path, so that the power path of the corresponding battery pack string is in a disconnection and maintenance state, and simultaneously the corresponding battery module single battery monitoring and sampling module sends corresponding alarm information, when the parameter of the corresponding single battery is out of the set dangerous state parameter range, the operation continues to ④;
④ A storage battery pack string direct current confluence and pack string balance control device comprises a storage battery pack string monitoring and management module, a storage battery module single battery monitoring and sampling module, a bidirectional energy storage converter and an energy storage system upper computer, wherein the storage battery pack string monitoring and management module monitors voltage, current and temperature of each storage battery pack string and all storage battery monomers of the energy storage system in real time through each storage battery module single battery monitoring and sampling module, calculates and stores information parameters of electric quantity, compares the information parameters with consistency of the storage battery monomer parameters of each storage battery pack string, compares the information with operation guarantee parameters preset by the energy storage system, and sends alarm information to the bidirectional energy storage converter and the energy storage system upper computer when the operation guarantee parameter requirement preset by the energy storage system is not met, and controls the on-off of a corresponding storage battery pack string direct current power line on-off switch and a protection circuit in the storage battery pack string;
⑤ when the operation guarantee parameters preset by the energy storage system are met, the upper computer of the energy storage system monitors real-time information parameters of each storage battery pack string and all storage battery monomers of the energy storage system in real time according to the power demand of a power grid and the storage battery pack string direct current confluence and pack string balance management and control device and controls the charge and discharge power of the bidirectional energy storage converter according to the preset regulation and control strategy of the energy storage system, wherein ⑥ is carried out during charging, and ⑦ is carried out during discharging;
⑥, the energy storage system upper computer monitors real-time information parameters of each storage battery string and all storage battery monomers of the energy storage system in real time through a storage battery string direct current confluence and storage battery module single battery monitoring and sampling module in the string balance control device, and performs storage battery string electric energy balance control according to the inconsistency degree between the corresponding storage battery strings and the operation guarantee parameter preset by the energy storage system, namely, the storage battery string with electric energy higher than the average value of each storage battery string and consistency deviation value higher than the operation guarantee requirement controls the direct current power line on-off switch and the protection circuit of the corresponding storage battery string to be switched off and stops charging in the charging process, and then when the electric energy of the corresponding storage battery string is lower than the average value of each storage battery string and the consistency deviation value is within the operation guarantee requirement range, the direct current power line on-off switch and the protection circuit of the corresponding storage battery string are controlled to be switched on and off to continue charging, and then the operation is switched to ①;
⑦, the energy storage system upper computer monitors real-time information parameters of each storage battery string and all storage battery monomers of the energy storage system in real time through a storage battery string direct current confluence and storage battery module single battery monitoring and sampling module in the string balance control device, and performs storage battery string electric energy balance control according to the inconsistency degree between the corresponding storage battery strings and the operation guarantee parameter preset by the energy storage system, namely, the storage battery string with electric energy lower than the average value of each storage battery string and consistency deviation value lower than the operation guarantee requirement controls the direct current power line on-off switch and the protection circuit of the corresponding storage battery string to be switched off and stop discharging in the discharging process, and then when the electric energy and parameters of the corresponding storage battery string are higher than the average value of each storage battery string and the consistency deviation value is within the operation guarantee requirement range, the direct current power line on-off switch and the protection circuit of the corresponding storage battery string are controlled to be switched on and discharged continuously, and then the operation is switched to ①;
after a storage battery energy storage BMS based on dual-path information sampling monitoring and protection control is started normally, a dual-path control strategy is adopted, wherein when dangerous parameters are monitored and found, a storage battery module single battery monitoring and sampling module directly drives and controls a direct current power path of a corresponding storage battery string to be disconnected, when the dangerous parameters are monitored and found to exceed the range of operation guarantee parameter required values, the storage battery string monitoring and management module regulates and controls the dual-path control strategy, an upper computer of the energy storage system controls and circularly operates from ① th to ⑦ th, when the electric energy of the storage battery string is charged and discharged, the electric energy of the storage battery string is lower than the average value of each storage battery string, and the consistency deviation value of the corresponding storage battery string is larger than the operation guarantee parameter required value preset by the energy storage system, the corresponding power path is switched on when the balance is met and normal operation condition parameter values are reached, so that the electric quantity of each storage battery string is balanced and meets.
The storage battery energy storage BMS system based on dual-path information sampling monitoring and protection control is characterized in that a storage battery pack string monitoring management module mainly comprises: the battery pack string monitoring and management module bus, the embedded processor, the regulation and control strategy and parameter module, the data memory, the power circuit, the communication processing circuit, the control processing circuit, the clock circuit and the insulation detection circuit, wherein:
the embedded processor is respectively connected with the regulation and control strategy and parameter module, the data memory, the power circuit, the communication processing circuit, the control processing circuit, the clock circuit and the insulation detection circuit through a storage battery pack string monitoring management module bus to form an information link for monitoring management and data processing and control of the storage battery pack string.
The utility model provides a battery energy storage BMS based on two path information sampling monitoring and protection control, its battery module battery cell monitoring sampling module's characteristics are, mainly include: monitoring sampling module bus, embedded treater, data memory, clock circuit, power supply circuit, communication processing circuit, control drive circuit, voltage sampling circuit, current sampling circuit, temperature sampling circuit, insulating detection circuitry, wherein:
the embedded processor is respectively connected with the data memory, the clock circuit, the power circuit, the communication processing circuit, the control driving circuit, the voltage sampling circuit, the current sampling circuit, the temperature sampling circuit and the insulation detection circuit through a monitoring sampling module bus to form a management and control link for monitoring and sampling the single batteries of the storage battery module.
The invention belongs to the technical field of application of electrochemical storage battery energy storage systems, and particularly relates to a storage battery energy storage BMS (battery management system) based on dual-path information sampling monitoring and protection control, wherein each storage battery module single battery monitoring and sampling module in a storage battery string direct current confluence and string balance management and control device collects electric energy parameters such as voltage, current, electric quantity and the like of each storage battery string and all storage battery monomers in real time and temperature parameters and compares the electric energy parameters with operation guarantee parameters preset by an energy storage system to carry out string-level electric energy balance, when the parameters of the single batteries are monitored to reach a set dangerous state parameter range, the corresponding storage battery module single battery monitoring and sampling module directly drives a corresponding storage battery string direct current power line on-off switch and a protection circuit to disconnect the electric power path of a corresponding storage battery string direct current confluence bus bar connected with the storage battery string, the risk that a plurality of storage battery single body equalizing electronic circuits and current loops are arranged is greatly reduced, and the safety of the energy storage system is greatly improved while the investment is saved.
Drawings
Fig. 1 is a schematic diagram of the structure and principle of a battery energy storage BMS system based on dual-path information sampling monitoring and protection control.
Fig. 2 is a schematic diagram illustrating the structure and principle of the battery string monitoring and managing module.
Fig. 3 is a schematic diagram of the structure and principle of a single battery monitoring and sampling module of a storage battery module.
Detailed Description
A battery string unit module and a monitoring management system will be described as an example of implementation with reference to the accompanying drawings, but the described embodiment is a part of, and not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention. The techniques and schemes of the present invention are not limited to those given in this example.
As shown in fig. 1, a battery energy storage BMS system based on dual-path information sampling monitoring and protection control mainly includes: storage battery pack string direct current confluence and pack string balance control device (1), storage battery pack string monitoring management module (2), upper computer communication line (3), two-way energy storage converter communication line (4), two-way energy storage converter (5), storage battery pack string direct current confluence busbar (6), two-way energy storage converter alternating current power line (7), storage battery pack string monitoring management module sampling and control information bus (8), electric network (9), energy storage system upper computer (30), 1 st storage battery pack string 1 st storage battery module (101), 1 st storage battery pack string 2 nd storage battery module (102), 1 st storage battery pack string mth storage battery module (10m), 1 st storage battery pack string 1 st storage battery module single battery monitoring and sampling module (111), 1 st storage battery pack string 2 nd storage battery module single battery monitoring and sampling module (112), 1 st storage battery pack string mth storage battery module single battery monitoring and sampling module (11m), 1 st storage battery module information acquisition pencil (121) of 1 st storage battery pack string, 2 nd storage battery module information acquisition pencil (122) of 1 st storage battery pack string, mth storage battery module information acquisition pencil (12m) of 1 st storage battery pack string, 1 st storage battery pack string direct current power line (13), 1 st storage battery pack string direct current power line on-off switch and protection circuit (14), 1 st storage battery pack string fast protection control path (15), 2 nd storage battery pack string 1 st storage battery module (201), 2 nd storage battery pack string 2 nd storage battery module (202), 2 nd storage battery pack string mth storage battery module (20m), 2 nd storage battery pack string 1 st storage battery module single cell monitoring and sampling module (211), 2 nd storage battery pack string 2 nd storage battery module single cell monitoring and sampling module (212), 2 nd storage battery pack string mth storage battery module single cell monitoring and sampling module (21m), The system comprises a 1 st storage battery module information acquisition wiring harness (221) of a 2 nd storage battery pack string, a 2 nd storage battery module information acquisition wiring harness (222) of a 1 st storage battery pack string, a mth storage battery module information acquisition wiring harness (22m) of a 2 nd storage battery pack string, a 2 nd storage battery pack string direct current power line (23), a 2 nd storage battery pack string direct current power line on-off switch and protection circuit (24), a 2 nd storage battery pack string fast protection control path (25), a 1 st storage battery module (N01) of an Nth storage battery pack string, a 2 nd storage battery module (N02) of an Nth storage battery pack string, a m th storage battery module (N0m) of an Nth storage battery pack string, a 1 st storage battery module single battery module monitoring and sampling module (N11) of the Nth storage battery pack string, a 2 nd storage battery module single battery monitoring and sampling module (N12), a m th storage battery module single battery monitoring and sampling module (, An nth battery pack string 1 st battery module information acquisition harness (N21), an nth battery pack string 2 nd battery module information acquisition harness (N22), an nth battery pack string mth battery module information acquisition harness (N2m), an nth battery pack string direct current power line (N3), an nth battery pack string direct current power line on-off switch and protection circuit (N4), an nth battery pack string fast protection control path (N5), wherein:
a 1 st storage battery pack string direct current power line on-off switch and protection circuit (14), a 2 nd storage battery pack string direct current power line on-off switch and protection circuit (24), an Nth storage battery pack string direct current power line on-off switch and protection circuit (N4), a storage battery pack string direct current bus bar (6) and a storage battery pack string monitoring management module (2) are installed in a cabinet body to form a storage battery pack string direct current bus bar and pack balance management and control device (1) for executing storage battery pack string electric energy balance and safety protection on-off control;
the positive and negative electrodes of two sequentially adjacent storage battery modules, namely a 1 st storage battery module (101) of a 1 st storage battery string, a 2 nd storage battery module (102) of the 1 st storage battery string and an mth storage battery module (10m) of the 1 st storage battery string, are connected in series to form a 1 st storage battery string (10);
the positive and negative electrodes of two sequentially adjacent storage battery modules, namely a 1 st storage battery module (201) of a 2 nd storage battery string, a 2 nd storage battery module (202) of the 2 nd storage battery string and an mth storage battery module (20m) of the 2 nd storage battery string, are connected in series to form a 2 nd storage battery string (20);
the positive and negative electrodes of two sequentially adjacent storage battery modules, namely a 1 st storage battery module (N01) of an Nth storage battery pack string, a 2 nd storage battery module (N02) of the Nth storage battery pack string and an mth storage battery module (N0m) of the Nth storage battery pack string are connected in series to form an Nth storage battery pack string (N0);
a 1 st storage battery module single battery monitoring and sampling module (111) of a 1 st storage battery string, a 2 nd storage battery module single battery monitoring and sampling module (112) of a 1 st storage battery string, and a 1 st storage battery string mth storage battery module single battery monitoring and sampling module (11m) are respectively connected with each corresponding single storage battery in a 1 st storage battery string, a 1 st storage battery module (101), a 1 st storage battery string, a 2 nd storage battery module (102), and a 1 st storage battery string, an mth storage battery module (10m) of the 1 st storage battery string through a 1 st storage battery string, a 1 st storage battery module, a 1 st storage battery string, a monitoring and management module (8) of the storage battery string, a 1 st storage battery pack string all-monomer storage battery information sampling monitoring communication path is formed, and meanwhile, a 1 st storage battery pack string direct-current power line on-off switch and a protection circuit (14) are connected through a 1 st storage battery pack string rapid protection control path (15), so that a 1 st storage battery pack string (10) real-time monitoring and rapid protection direct drive control path is formed;
a 1 st storage battery module single battery monitoring and sampling module (211) of a 2 nd storage battery pack string, a 2 nd storage battery module single battery monitoring and sampling module (212) of a 2 nd storage battery pack string, a 2 nd storage battery module single battery monitoring and sampling module (21m) of a 2 nd storage battery pack string are respectively connected with each corresponding single storage battery in a 1 st storage battery module (201) of a 2 nd storage battery pack string, a 2 nd storage battery module (202) of a 2 nd storage battery pack string and an m storage battery module (20m) of a 2 nd storage battery pack string through a 2 nd storage battery pack string 1 storage battery module information acquisition wiring harness (221), a 2 nd storage battery pack string m storage battery module information acquisition wiring harness (22m), and are connected with a storage battery pack string monitoring and management module (2) through a storage battery pack string monitoring and management module sampling and control information bus (8), a 2 nd storage battery pack string all-monomer storage battery information sampling monitoring communication path is formed, and meanwhile, a 2 nd storage battery pack string direct current power line on-off switch and a protection circuit (24) are connected through a 2 nd storage battery pack string rapid protection control path (25), so that a 2 nd storage battery pack string (20) real-time monitoring and rapid protection direct drive control path is formed;
the monitoring and sampling module (N11) for the single battery of the 1 st storage battery module of the Nth storage battery pack string, the monitoring and sampling module (N12) for the single battery of the 2 nd storage battery module of the Nth storage battery pack string, and the monitoring and sampling module (N1m) for the single battery of the mth storage battery module of the Nth storage battery pack string are respectively connected with each corresponding single storage battery in the 1 st storage battery module (N01), the 2 nd storage battery module (N02) of the Nth storage battery pack string, and the mth storage battery module (N0m) of the Nth storage battery pack string through an information acquisition wiring harness (N2m) of the Nth storage battery pack string, and are connected with the monitoring and management module (2) of the storage battery pack string through a sampling and control information bus (8) of the storage battery pack string, an N storage battery pack string all-cell storage battery information sampling monitoring communication path is formed, and meanwhile, the N storage battery pack string direct-current power line on-off switch and a protection circuit (N4) are connected through an N storage battery pack string rapid protection control path (N5), so that a real-time monitoring and rapid protection direct drive control path of an N storage battery pack string (N0) is formed;
the 1 st storage battery pack string (10) is connected with the 1 st storage battery pack string direct-current power line on-off switch and a protection circuit (14) through a 1 st storage battery pack string direct-current power line (13), and the 1 st storage battery pack string direct-current power line on-off switch and the protection circuit (14) are connected with a power grid (9) through a storage battery pack string direct-current bus bar (6), a bidirectional energy storage converter (5) and a bidirectional energy storage converter alternating-current power line (7) in sequence to form a power path for charging and discharging the 1 st storage battery pack string (10);
the 2 nd storage battery pack string (20) is connected with the 2 nd storage battery pack string direct-current power line on-off switch and a protection circuit (24) through a 2 nd storage battery pack string direct-current power line (23), and the 2 nd storage battery pack string direct-current power line on-off switch and the protection circuit (24) are connected with a power grid (9) through a storage battery pack string direct-current busbar (6), a bidirectional energy storage converter (5) and a bidirectional energy storage converter alternating-current power line (7) in sequence to form a power path for charging and discharging the 2 nd storage battery pack string (20);
the Nth storage battery pack string (N0) is connected with an Nth storage battery pack string direct-current power line on-off switch and a protection circuit (N4) through an Nth storage battery pack string direct-current power line (N3), and the Nth storage battery pack string direct-current power line on-off switch and the protection circuit (N4) are connected with a power grid (9) through a storage battery pack string direct-current bus bar (6), a bidirectional energy storage converter (5) and a bidirectional energy storage converter alternating-current power line (7) in sequence to form a power path for charging and discharging the Nth storage battery pack string (N0);
the storage battery pack string monitoring and management module (2) is respectively connected with a 1 st storage battery pack string 1 storage battery module single battery monitoring and sampling module (111) through a storage battery pack string monitoring and management module sampling and control information bus (8), a 1 st storage battery pack string 2 storage battery module single battery monitoring and sampling module (112), a 1 st storage battery pack string mth storage battery module single battery monitoring and sampling module (11m), a 2 nd storage battery pack string 1 storage battery module single battery monitoring and sampling module (211), a 2 nd storage battery pack string 2 storage battery module single battery monitoring and sampling module (212), a 2 nd storage battery pack string mth storage battery module single battery monitoring and sampling module (21m), an Nth storage battery pack string 1 storage battery module single battery monitoring and sampling module (N11), an Nth storage battery pack string 2 storage battery module single battery monitoring and sampling module (N12), An Nth storage battery pack string, an mth storage battery module single battery monitoring and sampling module (N1m), a 1 st storage battery pack string direct-current power line on-off switch and protection circuit (14), a 2 nd storage battery pack string direct-current power line on-off switch and protection circuit (24) and an N storage battery pack string direct-current power line on-off switch and protection circuit (N4) form a communication link for real-time monitoring of each storage battery pack string and all storage battery monomers and electric energy balance management control of the storage battery pack strings in the whole energy storage system;
the storage battery pack string monitoring and management module (2) is connected with the bidirectional energy storage converter (5) through a bidirectional energy storage converter communication line (4) to form an auxiliary control link for managing and controlling the bidirectional energy storage converter (5) to regulate the charging and discharging power of the storage battery and balance the electric quantity of the storage battery pack string by the storage battery pack string monitoring and management module (2);
the energy storage system upper computer (30) is connected with the storage battery pack string monitoring management module (2) through an upper computer communication line (3) to form a regulation and control communication link for monitoring and controlling the charging and discharging of the storage battery pack string in real time through the storage battery pack string monitoring management module (2);
the upper computer (30) of the energy storage system is connected with the bidirectional energy storage converter (5) through an upper computer communication line (3) to form a control link for controlling the charging and discharging of the bidirectional energy storage converter (5) by the upper computer (30) of the energy storage system;
a method for controlling the operation of a battery energy storage BMS system based on dual-path information sampling monitoring and protection control comprises the following steps:
① A storage battery energy storage BMS system based on dual path information sampling monitoring and protection control is powered on and operated, a storage battery string monitoring management module (2) in a storage battery string direct current confluence and string balance management and control device (1) simultaneously monitors each storage battery string and all storage battery monomers in real time through each storage battery module single battery monitoring sampling module and an energy storage system upper computer (30);
② when the BMS system is abnormal, alarming and stopping operation;
③ when the BMS system is normal, each battery module single battery monitoring and sampling module continues to operate ④ when monitoring that the parameter of one or more single batteries does not reach the set dangerous state parameter range, otherwise, the corresponding battery module single battery monitoring and sampling module immediately cuts off the power path of the corresponding battery string direct current bus bar (6) connected with the corresponding battery string through the corresponding battery string rapid protection control path, so that the power path of the corresponding battery string is in a cut-off and maintenance state, and simultaneously the corresponding battery module single battery monitoring and sampling module sends out corresponding alarm information, when the parameter of the corresponding single battery is separated from the set dangerous state parameter range, ④ is continued;
④ A storage battery pack string direct current confluence and pack string balance control device (1) comprises a storage battery pack string monitoring and management module (2) which monitors information parameters of voltage, current, temperature and calculated and stored electric quantity of each storage battery pack string and all storage battery monomers of an energy storage system in real time through a single battery monitoring and sampling module of each storage battery module, compares the consistency of the parameters of the storage battery monomers of each storage battery pack string with operation guarantee parameters preset by the energy storage system, sends alarm information to a bidirectional energy storage converter (5) and an upper computer (30) of the energy storage system when monitoring that the requirements of the operation guarantee parameters preset by the energy storage system are not met, and controls the on-off of a direct current power line on-off switch and a protection circuit of a corresponding storage battery pack string in the storage battery pack string direct current confluence and pack string balance control device (1) according to the parameter conditions set by the energy storage system and correspondingly adjusts the charging and discharging power of the bidirectional energy storage;
⑤, when the preset operation guarantee parameters of the energy storage system are met, the energy storage system upper computer (30) monitors real-time information parameters of each storage battery pack string and all storage battery single bodies of the energy storage system in real time according to the power demand of a power grid (9) and the storage battery pack string direct current confluence and pack string balance management and control module (2) and each storage battery module single body monitoring and sampling module in the storage battery pack string direct current confluence and pack string balance management and control device (1), and controls the charge and discharge power of the bidirectional energy storage converter (5) according to the preset regulation and control strategy of the energy storage system, wherein ⑥ is carried out during charging, and ⑦ is carried;
⑥, the energy storage system upper computer (30) monitors real-time information parameters of each storage battery string and all storage battery monomers of the energy storage system in real time through a storage battery string direct current confluence and string balance management and control device (1) and a storage battery module single battery monitoring and sampling module, and carries out storage battery string electric energy balance regulation and control according to the inconsistency degree between the corresponding storage battery strings and the operation guarantee parameter preset by the energy storage system, namely, controls the storage battery string with electric energy higher than the average value of each storage battery string and consistency deviation value higher than the operation guarantee requirement to switch on and off a corresponding storage battery string direct current power line on-off switch and a protection circuit and stop charging in the charging process, and then controls the corresponding storage battery string direct current power line on-off switch and the protection circuit to be closed to continue charging when the corresponding storage battery string electric energy is lower than the average value of each storage battery string and the consistency is in the operation guarantee requirement range, and then turns to ①;
⑦ continuously operating, monitoring and managing each storage battery string and all storage battery monomer real-time information parameters of the energy storage system in real time by a storage battery string monitoring and managing module (2) and each storage battery module monomer battery monitoring and sampling module in the storage battery string direct current confluence and string balance management and control device (1) through an energy storage system, carrying out storage battery string electric energy balance regulation and control according to the inconsistency degree between the corresponding storage battery strings and the operation guarantee parameters preset by the energy storage system, namely controlling the storage battery string with electric energy lower than the average value of each storage battery string and with consistency deviation value lower than the operation guarantee requirement to open and close the corresponding storage battery string direct current power line on-off switch and the protection circuit and stop discharging in the discharging process, and then controlling the corresponding storage battery string direct current power line on-off switch and the protection circuit to be closed and continuously discharging when the electric energy and parameters of the corresponding storage battery string are higher than the average value of each storage battery string and the consistency deviation value is within the operation guarantee requirement range, and turning to ①;
after a storage battery energy storage BMS based on double-path information sampling monitoring and protection control is started normally, a double-path control strategy that a storage battery module single battery monitoring and sampling module directly drives and controls to disconnect a direct current power path of a corresponding storage battery pack string when dangerous state parameters are monitored and found, a storage battery pack string monitoring and management module (2) regulates and controls when the dangerous state parameters exceed a required value range of operation guarantee parameters is monitored and found, ① th to ⑦ th are managed and circularly operated by an energy storage system upper computer (30), the power path of the corresponding storage battery pack string is disconnected when the electric energy of the storage battery pack string is higher than the average value of each storage battery pack string during charging and discharging and the consistency deviation value is larger than the preset operation guarantee parameter required value of the energy storage system, the corresponding power path is connected when the balance and normal operation condition parameter values are met, so that the electric quantity of each storage battery pack string is balanced and meets the consistency requirement, and the whole energy storage system is controlled to safely and efficiently.
As shown in fig. 2, a battery energy storage BMS system based on dual-path information sampling monitoring and protection control, the battery string monitoring management module thereof is characterized by mainly comprising: the battery pack monitoring and management system comprises a storage battery pack string monitoring and management module bus (2120), an embedded processor (2121), a regulation and control strategy and parameter module (2122), a data memory (2123), a power supply circuit (2124), a communication processing circuit (2126), a control processing circuit (2127), a clock circuit (2128) and an insulation detection circuit (2129), wherein:
the embedded processor (2121) is connected with the regulation and control strategy and parameter module (2122), the data memory (2123), the power supply circuit (2124), the communication processing circuit (2126), the control processing circuit (2127), the clock circuit (2128) and the insulation detection circuit (2129) through a storage battery pack string monitoring management module bus (2120) respectively to form an information link for monitoring, managing, data processing and managing the storage battery pack string.
As shown in fig. 3, a battery energy storage BMS system based on dual-path information sampling monitoring and protection control, the battery module single cell monitoring and sampling module thereof is characterized in that: monitoring and sampling module bus (2020), embedded processor (2021), data memory (2022), clock circuit (2023), power supply circuit (2024), communication processing circuit (2026), control drive circuit (2027), voltage sampling circuit (2028), current sampling circuit (2029), temperature sampling circuit (2030), insulation detection circuit (1031), wherein:
the embedded processor (2021) is respectively connected with the data memory (2022), the clock circuit (2023), the power supply circuit (2024), the communication processing circuit (2026), the control driving circuit (2027), the voltage sampling circuit (2028), the current sampling circuit (2029), the temperature sampling circuit (2030) and the insulation detection circuit (1031) through a monitoring sampling module bus (2020), and a management and control link of monitoring and sampling of the single batteries of the storage battery module is formed.
The invention belongs to the technical field of application of electrochemical storage battery energy storage systems, and particularly relates to a storage battery energy storage BMS (battery management system) based on dual-path information sampling monitoring and protection control, which is characterized in that a storage battery string direct current confluence and string balance management and control device (1) is used for collecting electric energy parameters such as voltage, current, electric quantity and the like and temperature parameters of all storage battery strings and all storage battery monomers in real time by a storage battery string monitoring and management module (2) and a single battery monitoring and sampling module of each storage battery module, and comparing the electric energy parameters with operation guarantee parameters preset by an energy storage system to carry out string-level electric energy balance, when the parameters of the single batteries are monitored to reach a set dangerous state parameter range, the single battery monitoring and sampling module of the corresponding storage battery module directly drives a direct current power line on-off switch of the corresponding storage battery string and a protection circuit to disconnect the electric, the risk that a plurality of storage battery single body equalizing electronic circuits and current loops are arranged is greatly reduced, and the safety of the energy storage system is greatly improved while the investment is saved.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims (3)

1. A battery energy storage BMS system based on dual-path information sampling monitoring and protection control mainly comprises: storage battery pack string direct current confluence and pack string balance control device (1), storage battery pack string monitoring management module (2), upper computer communication line (3), two-way energy storage converter communication line (4), two-way energy storage converter (5), storage battery pack string direct current confluence busbar (6), two-way energy storage converter alternating current power line (7), storage battery pack string monitoring management module sampling and control information bus (8), electric network (9), energy storage system upper computer (30), 1 st storage battery pack string 1 st storage battery module (101), 1 st storage battery pack string 2 nd storage battery module (102), 1 st storage battery pack string mth storage battery module (10m), 1 st storage battery pack string 1 st storage battery module single battery monitoring and sampling module (111), 1 st storage battery pack string 2 nd storage battery module single battery monitoring and sampling module (112), 1 st storage battery pack string mth storage battery module single battery monitoring and sampling module (11m), 1 st storage battery module information acquisition pencil (121) of 1 st storage battery pack string, 2 nd storage battery module information acquisition pencil (122) of 1 st storage battery pack string, mth storage battery module information acquisition pencil (12m) of 1 st storage battery pack string, 1 st storage battery pack string direct current power line (13), 1 st storage battery pack string direct current power line on-off switch and protection circuit (14), 1 st storage battery pack string fast protection control path (15), 2 nd storage battery pack string 1 st storage battery module (201), 2 nd storage battery pack string 2 nd storage battery module (202), 2 nd storage battery pack string mth storage battery module (20m), 2 nd storage battery pack string 1 st storage battery module single cell monitoring and sampling module (211), 2 nd storage battery pack string 2 nd storage battery module single cell monitoring and sampling module (212), 2 nd storage battery pack string mth storage battery module single cell monitoring and sampling module (21m), The system comprises a 1 st storage battery module information acquisition wiring harness (221) of a 2 nd storage battery pack string, a 2 nd storage battery module information acquisition wiring harness (222) of a 1 st storage battery pack string, a mth storage battery module information acquisition wiring harness (22m) of a 2 nd storage battery pack string, a 2 nd storage battery pack string direct current power line (23), a 2 nd storage battery pack string direct current power line on-off switch and protection circuit (24), a 2 nd storage battery pack string fast protection control path (25), a 1 st storage battery module (N01) of an Nth storage battery pack string, a 2 nd storage battery module (N02) of an Nth storage battery pack string, a m th storage battery module (N0m) of an Nth storage battery pack string, a 1 st storage battery module single battery module monitoring and sampling module (N11) of the Nth storage battery pack string, a 2 nd storage battery module single battery monitoring and sampling module (N12), a m th storage battery module single battery monitoring and sampling module (, An nth battery pack string 1 st battery module information acquisition harness (N21), an nth battery pack string 2 nd battery module information acquisition harness (N22), an nth battery pack string mth battery module information acquisition harness (N2m), an nth battery pack string direct current power line (N3), an nth battery pack string direct current power line on-off switch and protection circuit (N4), an nth battery pack string fast protection control path (N5), wherein:
a 1 st storage battery pack string direct current power line on-off switch and protection circuit (14), a 2 nd storage battery pack string direct current power line on-off switch and protection circuit (24), an Nth storage battery pack string direct current power line on-off switch and protection circuit (N4), a storage battery pack string direct current bus bar (6) and a storage battery pack string monitoring management module (2) are installed in a cabinet body to form a storage battery pack string direct current bus bar and pack balance management and control device (1) for executing storage battery pack string electric energy balance and safety protection on-off control;
the positive and negative electrodes of two sequentially adjacent storage battery modules, namely a 1 st storage battery module (101) of a 1 st storage battery string, a 2 nd storage battery module (102) of the 1 st storage battery string and an mth storage battery module (10m) of the 1 st storage battery string, are connected in series to form a 1 st storage battery string (10);
the positive and negative electrodes of two sequentially adjacent storage battery modules, namely a 1 st storage battery module (201) of a 2 nd storage battery string, a 2 nd storage battery module (202) of the 2 nd storage battery string and an mth storage battery module (20m) of the 2 nd storage battery string, are connected in series to form a 2 nd storage battery string (20);
the positive and negative electrodes of two sequentially adjacent storage battery modules, namely a 1 st storage battery module (N01) of an Nth storage battery pack string, a 2 nd storage battery module (N02) of the Nth storage battery pack string and an mth storage battery module (N0m) of the Nth storage battery pack string are connected in series to form an Nth storage battery pack string (N0);
a 1 st storage battery module single battery monitoring and sampling module (111) of a 1 st storage battery string, a 2 nd storage battery module single battery monitoring and sampling module (112) of a 1 st storage battery string, and a 1 st storage battery string mth storage battery module single battery monitoring and sampling module (11m) are respectively connected with each corresponding single storage battery in a 1 st storage battery string, a 1 st storage battery module (101), a 1 st storage battery string, a 2 nd storage battery module (102), and a 1 st storage battery string, an mth storage battery module (10m) of the 1 st storage battery string through a 1 st storage battery string, a 1 st storage battery module, a 1 st storage battery string, a monitoring and management module (8) of the storage battery string, a 1 st storage battery pack string all-monomer storage battery information sampling monitoring communication path is formed, and meanwhile, a 1 st storage battery pack string direct-current power line on-off switch and a protection circuit (14) are connected through a 1 st storage battery pack string rapid protection control path (15), so that a 1 st storage battery pack string (10) real-time monitoring and rapid protection direct drive control path is formed;
a 1 st storage battery module single battery monitoring and sampling module (211) of a 2 nd storage battery pack string, a 2 nd storage battery module single battery monitoring and sampling module (212) of a 2 nd storage battery pack string, a 2 nd storage battery module single battery monitoring and sampling module (21m) of a 2 nd storage battery pack string are respectively connected with each corresponding single storage battery in a 1 st storage battery module (201) of a 2 nd storage battery pack string, a 2 nd storage battery module (202) of a 2 nd storage battery pack string and an m storage battery module (20m) of a 2 nd storage battery pack string through a 2 nd storage battery pack string 1 storage battery module information acquisition wiring harness (221), a 2 nd storage battery pack string m storage battery module information acquisition wiring harness (22m), and are connected with a storage battery pack string monitoring and management module (2) through a storage battery pack string monitoring and management module sampling and control information bus (8), a 2 nd storage battery pack string all-monomer storage battery information sampling monitoring communication path is formed, and meanwhile, a 2 nd storage battery pack string direct current power line on-off switch and a protection circuit (24) are connected through a 2 nd storage battery pack string rapid protection control path (25), so that a 2 nd storage battery pack string (20) real-time monitoring and rapid protection direct drive control path is formed;
the monitoring and sampling module (N11) for the single battery of the 1 st storage battery module of the Nth storage battery pack string, the monitoring and sampling module (N12) for the single battery of the 2 nd storage battery module of the Nth storage battery pack string, and the monitoring and sampling module (N1m) for the single battery of the mth storage battery module of the Nth storage battery pack string are respectively connected with each corresponding single storage battery in the 1 st storage battery module (N01), the 2 nd storage battery module (N02) of the Nth storage battery pack string, and the mth storage battery module (N0m) of the Nth storage battery pack string through an information acquisition wiring harness (N2m) of the Nth storage battery pack string, and are connected with the monitoring and management module (2) of the storage battery pack string through a sampling and control information bus (8) of the storage battery pack string, an N storage battery pack string all-cell storage battery information sampling monitoring communication path is formed, and meanwhile, the N storage battery pack string direct-current power line on-off switch and a protection circuit (N4) are connected through an N storage battery pack string rapid protection control path (N5), so that a real-time monitoring and rapid protection direct drive control path of an N storage battery pack string (N0) is formed;
the 1 st storage battery pack string (10) is connected with the 1 st storage battery pack string direct-current power line on-off switch and a protection circuit (14) through a 1 st storage battery pack string direct-current power line (13), and the 1 st storage battery pack string direct-current power line on-off switch and the protection circuit (14) are connected with a power grid (9) through a storage battery pack string direct-current bus bar (6), a bidirectional energy storage converter (5) and a bidirectional energy storage converter alternating-current power line (7) in sequence to form a power path for charging and discharging the 1 st storage battery pack string (10);
the 2 nd storage battery pack string (20) is connected with the 2 nd storage battery pack string direct-current power line on-off switch and a protection circuit (24) through a 2 nd storage battery pack string direct-current power line (23), and the 2 nd storage battery pack string direct-current power line on-off switch and the protection circuit (24) are connected with a power grid (9) through a storage battery pack string direct-current busbar (6), a bidirectional energy storage converter (5) and a bidirectional energy storage converter alternating-current power line (7) in sequence to form a power path for charging and discharging the 2 nd storage battery pack string (20);
the Nth storage battery pack string (N0) is connected with an Nth storage battery pack string direct-current power line on-off switch and a protection circuit (N4) through an Nth storage battery pack string direct-current power line (N3), and the Nth storage battery pack string direct-current power line on-off switch and the protection circuit (N4) are connected with a power grid (9) through a storage battery pack string direct-current bus bar (6), a bidirectional energy storage converter (5) and a bidirectional energy storage converter alternating-current power line (7) in sequence to form a power path for charging and discharging the Nth storage battery pack string (N0);
the storage battery pack string monitoring and management module (2) is respectively connected with a 1 st storage battery pack string 1 storage battery module single battery monitoring and sampling module (111) through a storage battery pack string monitoring and management module sampling and control information bus (8), a 1 st storage battery pack string 2 storage battery module single battery monitoring and sampling module (112), a 1 st storage battery pack string mth storage battery module single battery monitoring and sampling module (11m), a 2 nd storage battery pack string 1 storage battery module single battery monitoring and sampling module (211), a 2 nd storage battery pack string 2 storage battery module single battery monitoring and sampling module (212), a 2 nd storage battery pack string mth storage battery module single battery monitoring and sampling module (21m), an Nth storage battery pack string 1 storage battery module single battery monitoring and sampling module (N11), an Nth storage battery pack string 2 storage battery module single battery monitoring and sampling module (N12), An Nth storage battery pack string, an mth storage battery module single battery monitoring and sampling module (N1m), a 1 st storage battery pack string direct-current power line on-off switch and protection circuit (14), a 2 nd storage battery pack string direct-current power line on-off switch and protection circuit (24) and an N storage battery pack string direct-current power line on-off switch and protection circuit (N4) form a communication link for real-time monitoring of each storage battery pack string and all storage battery monomers and electric energy balance management control of the storage battery pack strings in the whole energy storage system;
the storage battery pack string monitoring and management module (2) is connected with the bidirectional energy storage converter (5) through a bidirectional energy storage converter communication line (4) to form an auxiliary control link for managing and controlling the bidirectional energy storage converter (5) to regulate the charging and discharging power of the storage battery and balance the electric quantity of the storage battery pack string by the storage battery pack string monitoring and management module (2);
the energy storage system upper computer (30) is connected with the storage battery pack string monitoring management module (2) through an upper computer communication line (3) to form a regulation and control communication link for monitoring and controlling the charging and discharging of the storage battery pack string in real time through the storage battery pack string monitoring management module (2);
the upper computer (30) of the energy storage system is connected with the bidirectional energy storage converter (5) through an upper computer communication line (3) to form a control link for controlling the charging and discharging of the bidirectional energy storage converter (5) by the upper computer (30) of the energy storage system;
a method for controlling the operation of a battery energy storage BMS system based on dual-path information sampling monitoring and protection control comprises the following steps:
① A storage battery energy storage BMS system based on dual path information sampling monitoring and protection control is powered on and operated, a storage battery string monitoring management module (2) in a storage battery string direct current confluence and string balance management and control device (1) simultaneously monitors each storage battery string and all storage battery monomers in real time through each storage battery module single battery monitoring sampling module and an energy storage system upper computer (30);
② when the BMS system is abnormal, alarming and stopping operation;
③, when the BMS system is normal, each battery module single battery monitoring and sampling module continues to operate ④ when monitoring that the parameters of one or more single batteries do not reach the set dangerous state parameter range, otherwise, the corresponding battery module single battery monitoring and sampling module implements control and immediately breaks the power path of the corresponding battery string direct current bus bar (6) connected with the corresponding battery string through the corresponding battery string rapid protection control path, so that the corresponding battery string power path is in a break and maintenance state, and simultaneously the corresponding battery module single battery monitoring and sampling module sends corresponding alarm information, when the parameters of the corresponding single batteries are out of the set dangerous state parameter range, ④ is continuously carried out;
④ A storage battery pack string direct current confluence and pack string balance control device (1) comprises a storage battery pack string monitoring and management module (2) which monitors information parameters of voltage, current, temperature and calculated and stored electric quantity of each storage battery pack string and all storage battery monomers of an energy storage system in real time through a single battery monitoring and sampling module of each storage battery module, compares the consistency of the parameters of the storage battery monomers of each storage battery pack string with operation guarantee parameters preset by the energy storage system, sends alarm information to a bidirectional energy storage converter (5) and an upper computer (30) of the energy storage system when monitoring that the requirements of the operation guarantee parameters preset by the energy storage system are not met, and controls the on-off of a direct current power line on-off switch and a protection circuit of a corresponding storage battery pack string in the storage battery pack string direct current confluence and pack string balance control device (1) according to the parameter conditions set by the energy storage system and correspondingly adjusts the charging and discharging power of the bidirectional energy storage;
⑤, when the preset operation guarantee parameters of the energy storage system are met, the energy storage system upper computer (30) monitors real-time information parameters of each storage battery pack string and all storage battery single bodies of the energy storage system in real time according to the power demand of a power grid (9) and the storage battery pack string direct current confluence and pack string balance management and control module (2) and each storage battery module single body monitoring and sampling module in the storage battery pack string direct current confluence and pack string balance management and control device (1), and controls the charge and discharge power of the bidirectional energy storage converter (5) according to the preset regulation and control strategy of the energy storage system, wherein ⑥ is carried out during charging, and ⑦ is carried;
⑥, the energy storage system upper computer (30) monitors real-time information parameters of each storage battery string and all storage battery monomers of the energy storage system in real time through a storage battery string direct current confluence and string balance management and control device (1) and a storage battery module single battery monitoring and sampling module, and carries out storage battery string electric energy balance regulation and control according to the inconsistency degree between the corresponding storage battery strings and the operation guarantee parameter preset by the energy storage system, namely, controls the storage battery string with electric energy higher than the average value of each storage battery string and consistency deviation value higher than the operation guarantee requirement to switch on and off a corresponding storage battery string direct current power line on-off switch and a protection circuit and stop charging in the charging process, and then controls the corresponding storage battery string direct current power line on-off switch and the protection circuit to be closed to continue charging when the corresponding storage battery string electric energy is lower than the average value of each storage battery string and the consistency is in the operation guarantee requirement range, and then turns to ①;
⑦, the energy storage system upper computer (30) monitors real-time information parameters of each storage battery string and all storage battery monomers of the energy storage system in real time through a storage battery string direct current confluence and string balance management and control device (1) and carries out storage battery string electric energy balance regulation and control according to the inconsistency degree between the corresponding storage battery strings and the operation guarantee parameter preset by the energy storage system, namely, when the electric energy and the parameter of the corresponding storage battery string are higher than the average value of each storage battery string and the consistency deviation value is lower than the operation guarantee requirement, the storage battery string controls the on-off switch of the direct current power line of the corresponding storage battery string and the protection circuit to be switched off and stopped to discharge, and then when the electric energy and the parameter of the corresponding storage battery string are higher than the average value of each storage battery string and the consistency deviation value is within the operation guarantee requirement range, the on-off switch of the direct current power line of the corresponding storage battery string and the protection circuit are controlled to be switched on and off to continue to discharge, ①;
after a storage battery energy storage BMS based on double-path information sampling monitoring and protection control is started normally, a double-path control strategy that a storage battery module single battery monitoring and sampling module directly drives and controls to disconnect a direct current power path of a corresponding storage battery pack string when dangerous state parameters are monitored and found, a storage battery pack string monitoring and management module (2) regulates and controls when the dangerous state parameters exceed a required value range of operation guarantee parameters is monitored and found, ① th to ⑦ th are managed and circularly operated by an energy storage system upper computer (30), the power path of the corresponding storage battery pack string is disconnected when the electric energy of the storage battery pack string is higher than the average value of each storage battery pack string during charging and discharging and the consistency deviation value is larger than the preset operation guarantee parameter required value of the energy storage system, the corresponding power path is connected when the balance and normal operation condition parameter values are met, so that the electric quantity of each storage battery pack string is balanced and meets the consistency requirement, and the whole energy storage system is controlled to safely and efficiently.
2. The battery energy storage BMS system based on dual-path information sampling monitoring and protection control as claimed in claim 1, wherein the battery string monitoring management module (2) mainly comprises: the battery pack monitoring and management system comprises a storage battery pack string monitoring and management module bus (2120), an embedded processor (2121), a regulation and control strategy and parameter module (2122), a data memory (2123), a power supply circuit (2124), a communication processing circuit (2126), a control processing circuit (2127), a clock circuit (2128) and an insulation detection circuit (2129), wherein:
the embedded processor (2121) is connected with the regulation and control strategy and parameter module (2122), the data memory (2123), the power supply circuit (2124), the communication processing circuit (2126), the control processing circuit (2127), the clock circuit (2128) and the insulation detection circuit (2129) through a storage battery pack string monitoring management module bus (2120) respectively to form an information link for monitoring, managing, data processing and managing the storage battery pack string.
3. The battery energy storage BMS system based on dual-path information sampling monitoring and protection control as claimed in claim 1, wherein the battery module cell monitoring and sampling module mainly comprises: monitoring and sampling module bus (2020), embedded processor (2021), data memory (2022), clock circuit (2023), power supply circuit (2024), communication processing circuit (2026), control drive circuit (2027), voltage sampling circuit (2028), current sampling circuit (2029), temperature sampling circuit (2030), insulation detection circuit (1031), wherein:
the embedded processor (2021) is respectively connected with the data memory (2022), the clock circuit (2023), the power supply circuit (2024), the communication processing circuit (2026), the control driving circuit (2027), the voltage sampling circuit (2028), the current sampling circuit (2029), the temperature sampling circuit (2030) and the insulation detection circuit (1031) through a monitoring sampling module bus (2020), and a management and control link of monitoring and sampling of the single batteries of the storage battery module is formed.
CN201811272118.4A 2018-10-30 2018-10-30 Battery energy storage BMS system based on dual-path information sampling monitoring and protection control Pending CN111129616A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CN201811272118.4A CN111129616A (en) 2018-10-30 2018-10-30 Battery energy storage BMS system based on dual-path information sampling monitoring and protection control
PCT/CN2019/113994 WO2020088449A1 (en) 2018-10-30 2019-10-29 Battery energy storage bms system enabling dual path-based information sampling and detection and protection control
EP19878380.5A EP3876333A4 (en) 2018-10-30 2019-10-29 Battery energy storage bms system enabling dual path-based information sampling and detection and protection control

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201811272118.4A CN111129616A (en) 2018-10-30 2018-10-30 Battery energy storage BMS system based on dual-path information sampling monitoring and protection control

Publications (1)

Publication Number Publication Date
CN111129616A true CN111129616A (en) 2020-05-08

Family

ID=70484131

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201811272118.4A Pending CN111129616A (en) 2018-10-30 2018-10-30 Battery energy storage BMS system based on dual-path information sampling monitoring and protection control

Country Status (1)

Country Link
CN (1) CN111129616A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114079298A (en) * 2020-08-10 2022-02-22 周锡卫 Safe BMS system for balanced control and abnormal rapid protection of battery energy storage system

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011132434A1 (en) * 2010-04-22 2011-10-27 三洋電機株式会社 Battery module, electric vehicle provided with same, mobile body, power storage device, power source device, and electric equipment
CN206850495U (en) * 2017-07-05 2018-01-05 周锡卫 A kind of unidirectional active equalization battery management system of two-way based on multiple-unit sorting
CN206976516U (en) * 2017-06-19 2018-02-06 周锡卫 One kind is based on cell batteries dynamic monitoring balancer
CN108667107A (en) * 2018-07-17 2018-10-16 中天钢铁集团有限公司 A kind of storage battery equalizing circuit and control method including auxiliary battery
CN209056570U (en) * 2018-10-30 2019-07-02 周锡卫 It is a kind of to be monitored based on dual path intelligence sample and protect the batteries to store energy BMS system controlled

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011132434A1 (en) * 2010-04-22 2011-10-27 三洋電機株式会社 Battery module, electric vehicle provided with same, mobile body, power storage device, power source device, and electric equipment
CN206976516U (en) * 2017-06-19 2018-02-06 周锡卫 One kind is based on cell batteries dynamic monitoring balancer
CN206850495U (en) * 2017-07-05 2018-01-05 周锡卫 A kind of unidirectional active equalization battery management system of two-way based on multiple-unit sorting
CN108667107A (en) * 2018-07-17 2018-10-16 中天钢铁集团有限公司 A kind of storage battery equalizing circuit and control method including auxiliary battery
CN209056570U (en) * 2018-10-30 2019-07-02 周锡卫 It is a kind of to be monitored based on dual path intelligence sample and protect the batteries to store energy BMS system controlled

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114079298A (en) * 2020-08-10 2022-02-22 周锡卫 Safe BMS system for balanced control and abnormal rapid protection of battery energy storage system

Similar Documents

Publication Publication Date Title
WO2020088449A1 (en) Battery energy storage bms system enabling dual path-based information sampling and detection and protection control
CN202474990U (en) Non-circulating-current battery pack device
CN110311179A (en) A kind of method of energy storage battery system intelligent early-warning
CN204597507U (en) A kind of battery management control system being provided with redundancy voltage and current detection circuit
CN105162215B (en) One kind is used for lead-acid batteries distributed battery management system and method in a balanced way
CN109586361B (en) Lithium battery energy storage power supply system
CN107275694B (en) Distributed storage battery equalization device and method with both active equalization and passive equalization
CN111224417A (en) Energy storage battery management system based on monitoring sampling module active control
CN107219467B (en) Transformer substation storage battery nuclear capacity device with sulfur removal and repair functions and method
CN112968503A (en) Multi-cluster parallel energy storage system applied to high-voltage direct-current equipment
CN111864889A (en) Uninterrupted emergency power supply system and method for open-circuit protection of lead-acid storage battery pack
JP6288096B2 (en) Battery system
CN211018284U (en) Energy storage battery management system based on monitoring sampling module active control
CN209056570U (en) It is a kind of to be monitored based on dual path intelligence sample and protect the batteries to store energy BMS system controlled
CN112865261B (en) Energy storage battery, application device thereof and charge and discharge control method
CN214958763U (en) Multi-cluster parallel energy storage system applied to high-voltage direct-current equipment
CN204538792U (en) A kind of parallel power supply system and power module
CN114204658A (en) Storage battery pack online capacity checking system
JP5366641B2 (en) Lithium-ion battery management device and lithium-ion battery system
CN111129616A (en) Battery energy storage BMS system based on dual-path information sampling monitoring and protection control
CN111009929A (en) Storage battery pack string direct current confluence and pack string balance control device of energy storage system
CN202333844U (en) N+1 storage battery pack on-line detection maintenance seamless power supply device
CN209913534U (en) Battery management system
CN111186338B (en) Energy storage battery BMS system of quick response
CN219871725U (en) Device for detecting battery state and battery protection device

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination