CN116599168A - Battery unit dynamic equalization and protection control system of energy storage system - Google Patents

Battery unit dynamic equalization and protection control system of energy storage system Download PDF

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Publication number
CN116599168A
CN116599168A CN202210113813.6A CN202210113813A CN116599168A CN 116599168 A CN116599168 A CN 116599168A CN 202210113813 A CN202210113813 A CN 202210113813A CN 116599168 A CN116599168 A CN 116599168A
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CN
China
Prior art keywords
battery
controllable switch
battery pack
energy storage
storage system
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Pending
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CN202210113813.6A
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Chinese (zh)
Inventor
周锡卫
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Individual
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Individual
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Priority to CN202210113813.6A priority Critical patent/CN116599168A/en
Publication of CN116599168A publication Critical patent/CN116599168A/en
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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0013—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries acting upon several batteries simultaneously or sequentially
    • H02J7/0014—Circuits for equalisation of charge between batteries
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00—Circuit arrangements for ac mains or ac distribution networks
    • H02J3/28—Arrangements for balancing of the load in a network by storage of energy
    • H02J3/32—Arrangements for balancing of the load in a network by storage of energy using batteries with converting means
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0013—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries acting upon several batteries simultaneously or sequentially
    • H02J7/0014—Circuits for equalisation of charge between batteries
    • H02J7/0019—Circuits for equalisation of charge between batteries using switched or multiplexed charge circuits
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
    • H02J7/00302—Overcharge protection
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
    • H02J7/00306—Overdischarge protection
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0047—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with monitoring or indicating devices or circuits
    • 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)
  • Power Engineering (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

The invention relates to a battery unit dynamic balancing and protecting control system of an energy storage system, which aims at the congenital defect of the battery energy storage system caused by the inconsistency of a battery and the generated and aggravated inconsistency in the connecting and running processes, adopts a battery unit real-time control module and a control module communication connection terminal, respectively connects a first controllable switch K1, a second controllable switch K2 and a third controllable switch K3 through switch control lines and controls the on-off of corresponding switches, and performs the control of dynamic balancing of the electric quantity of the battery unit and abnormal protection cutting-out of the battery unit; the battery charging and discharging power is dynamically regulated, the charging and discharging electric quantity is balanced, the electric quantity inconsistency among the batteries or battery packs is reduced, the abnormal batteries or battery packs are cut out on line in time, the batteries are ensured to run in safe, healthy and efficient states, and a safe, convenient and effective solution is provided for the battery energy storage system.

Description

Battery unit dynamic equalization and protection control system of energy storage system
Technical Field
The invention belongs to the technical field of battery energy storage, and particularly relates to a battery unit dynamic balancing and protecting control system of an energy storage system.
Background
The battery energy storage system is a battery pack formed by connecting a plurality of batteries with small electric quantity in series-parallel connection, and is connected into a power grid through an energy storage converter for charging and discharging. Because of unavoidable defects of the inconsistency of the battery monomers, particularly the inconsistency of the battery used for a period of time and the retired battery is particularly prominent, and the battery of the battery energy storage system is installed and physically positioned differently and is connected and placed relatively fixedly, the influence of the inconsistency on the charge and discharge electric quantity of the battery is further increased, the short plate effect of the overall efficiency reduction caused by the charge and discharge of the battery energy storage system is caused, and the unsafe risk of overcharge or overdischarge or even explosion of the battery is caused easily due to overlarge deviation of the voltage and the electric quantity of the individual battery. Therefore, the battery pack needs to be flexibly adjusted and dynamically maintained, the consistency of the voltage and the electric quantity of the battery and the battery pack string charge and discharge is ensured to be in a controllable range, the overcharge, the overdischarge and the short-circuit effect of the battery are avoided, and the safety, the utilization rate and the investment benefit of the battery energy storage system are improved.
For this reason, industry engineers continue to develop and practice, and several solutions are proposed, such as: the invention patent number of patent CN113193628 of a battery unit, an energy storage system and a battery unit fault protection method published by the national intellectual property office, the technical scheme claims, the specification and the battery unit, the energy storage system and the battery unit fault protection method published and proposed by the attached figures 2-7 of the specification, the system and the system structure diagram designed by the published technical scheme, as the corresponding contents of claim 1, claim 2, claim 13, claim 14 and the specification of the scheme, can be seen by combining with the attached figures 1-4, the invention is characterized in that the abnormal fault battery unit passes through a bypass power line and a switch, and a switch for isolating and cutting out the fault battery unit from the battery unit string is arranged at the corresponding battery unit connecting end of the battery unit string, and the core is that the bypass power line is used for short-circuiting to replace the battery unit generating fault; the 40 th to 45 th sections of the specification give the relation and function of the design conception and the system components of the technical scheme and the corresponding control rules and methods; it is easy to see that the technical scheme has obvious defects:
first, the system architecture and the control method of the scheme are designed as the content corresponding to claim 1, claim 2 and claim 13, claim 14 and the description of the scheme, and are combined with fig. 1 to fig. 4 and fig. 6 and fig. 7. A kind of electronic device with a high-pressure air-conditioning system. Claim 13, claim 14. The substantial protection content thereof has serious defects, and the scheme is described in claim 1 that when the battery unit is detected to be faulty: triggering a first controllable switch in the battery unit to be disconnected, so that a circuit formed by connecting the battery unit and other battery units in series is opened; and triggering a second controllable switch in the battery unit to be closed, wherein the battery unit group string formed by connecting the failed battery unit and other battery units in series is opened, and the battery unit group string is disconnected with a direct current bus of the power conversion equipment, so that the power interruption of the power conversion equipment caused by the open circuit of the battery unit group string generates direct current side faults, and the power conversion equipment is stopped due to the faults.
Secondly, because the system architecture of the technical scheme adopts the system architecture that the battery unit is directly closed through the second controllable switch to conduct bypass conduction, the second controllable switch of the bypass can be closed only after the first controllable switch is opened, otherwise, the battery unit is enabled to form instant short circuit, and the serious accident of explosion of the battery caused by the short circuit is caused. Therefore, the technical scheme of the scheme right requires that' when the battery unit is detected to have faults: triggering a first controllable switch in the battery unit to be disconnected, so that a circuit formed by connecting the battery unit and other battery units in series is opened; and triggering a second controllable switch within the cell to close, thereby bypassing the cell; therefore, the scheme can not perform online switching on the battery units with large inconsistent deviation on line and can not realize online dynamic balancing and maintenance operation.
Disclosure of Invention
In order to overcome the defects of the prior art, the technical difficulties and problems are effectively solved. The invention provides a battery unit dynamic equalization and protection control system of an energy storage system, which is characterized in that a battery unit real-time control module and a control module communication connection terminal are respectively connected with a first controllable switch K1, a second controllable switch K2 and a third controllable switch K3 through switch control lines, and are respectively connected with each battery of a battery or a battery pack through battery monitoring communication lines, and the battery or the battery pack is respectively connected with a power line with a group string configuration of the first controllable switch K1, a controlled transition bypass power line with a second controllable switch K2 and a resistor R, and a group string configuration of the third controllable switch K3, so as to form a switching control path and a system for dynamic equalization and protection of an online controlled battery unit and the battery or the battery pack.
The battery unit dynamic balancing and protecting control system of the energy storage system is characterized in that two or more online controlled battery units are connected in series to form a battery pack cluster for controlling dynamic switching of each battery or battery pack; and the energy storage system control device is respectively connected with the battery unit real-time control module and the power converter through the system control communication line to form a battery or battery pack on-line controlled switching and balanced battery energy storage system.
The battery unit dynamic balancing and protecting control system of the energy storage system is characterized in that one end of a group of serial connection power lines provided with a first controllable switch K1 is connected with the anode or cathode of a battery or a battery pack, the other end of the serial connection power lines provided with a second controllable switch K2 and a resistor R and a third controllable switch K3 are simultaneously connected with one end of the serial connection power lines, the serial connection power lines provided with the second controllable switch K2 and the resistor R and the serial connection power lines provided with the third controllable switch K3 are simultaneously connected with the cathode or anode of the same battery or battery pack, and the battery unit real-time control module is respectively connected with the first controllable switch K1, the second controllable switch K2 and the third controllable switch K3 through switch control lines and is connected with each battery of the battery or the battery pack through a battery monitoring communication line; the method is also characterized in that when a battery or a battery pack is cut out, the second controllable switch K2 is controlled to be closed, the third controllable switch K3 is opened, the first controllable switch K1 is closed and the second controllable switch K2 is opened to be closed, and a bypass is used for replacing a battery or a battery pack path; when the battery or the battery pack is put into, the second controllable switch K2 is controlled to be closed, the first controllable switch K1 is opened, the third controllable switch K3 is closed and the second controllable switch K2 is opened, and the bypass is switched to a battery or battery pack path; the on-line controlled battery unit and the switching control path for dynamic equalization and protection of the battery unit are formed.
The battery unit dynamic balance and protection control system of the energy storage system is characterized in that the dynamic balance control is that when the voltage or the electric quantity of a battery or a battery pack is monitored to generate deviation and the deviation is higher than a set value in the charging operation process of the energy storage system, a battery unit real-time control module controls the battery or the battery pack to be cut out, other battery units in a battery pack cluster continue to charge and operate, and when the deviation is smaller than the set value required by the battery or the battery pack to be put into, the battery unit real-time control module controls the battery or the battery pack to be put into.
The battery unit dynamic balance and protection control system of the energy storage system is characterized in that the dynamic balance control is that when the voltage or the electric quantity of a battery or a battery pack is monitored to generate deviation and the deviation is lower than a set value in the discharging operation process of the energy storage system, a battery unit real-time control module controls the battery or the battery pack to be cut out, other battery units in a battery pack cluster continue to discharge and operate, and when the deviation is smaller than the set value required by the battery or the battery pack to be put into, the battery unit real-time control module controls the battery or the battery pack to be put into.
The battery cell dynamic balancing and protecting control system of the energy storage system is characterized in that the battery cell dynamic balancing and protecting control system of the energy storage system operates in the following control mode:
1) When the battery unit real-time control module monitors abnormal faults of the battery or the battery pack, the battery or the battery pack is directly controlled to be cut out;
2) The energy storage system control device monitors the voltage, temperature and electric quantity parameters of each battery or battery pack in real time through collecting the real-time control modules of each battery unit, and when the deviation exceeds a set control threshold value, the power of the power converter is controlled, or a regulating and controlling instruction is sent to the corresponding real-time control module of the battery unit, and corresponding batteries or battery packs are cut out; when the parameters are recovered to be normal, sending a regulating instruction to a corresponding battery unit real-time control module, and throwing corresponding batteries or battery packs; and performing the operation of balancing and reducing the inconsistency deviation.
The invention relates to a battery unit dynamic balancing and protecting control system of an energy storage system, which aims at the congenital defect of the battery energy storage system caused by the inconsistency of a battery and the generated and aggravated inconsistency in the connecting and running processes, adopts a battery unit real-time control module and a control module communication connection terminal, respectively connects a first controllable switch K1, a second controllable switch K2 and a third controllable switch K3 through switch control lines and controls the on-off of corresponding switches, and performs the control of dynamic balancing of the electric quantity of the battery unit and abnormal protection cutting-out of the battery unit; the battery charging and discharging power is dynamically regulated, the charging and discharging electric quantity is balanced, the electric quantity inconsistency among the batteries or battery packs is reduced, the abnormal batteries or battery packs are cut out on line in time, the batteries are ensured to run in safe, healthy and efficient states, and a safe, convenient and effective solution is provided for the battery energy storage system.
Drawings
Fig. 1 is a schematic block diagram of the same cell dynamic equalization and protection control system.
Fig. 2 is a schematic diagram of the principle of the battery energy storage system with on-line controlled equalization and switching of a battery or a battery pack.
Detailed Description
As an example of implementation, a battery cell dynamic balancing and protection control system for an energy storage system is described with reference to the accompanying drawings, but the described embodiments are some, but not all, embodiments of the present invention applied to a battery cell dynamic balancing and protection control system for an energy storage system. All other embodiments, based on the embodiments of the invention, which a person of ordinary skill in the art would obtain without inventive faculty, are within the scope of the invention; the technique and scheme of the present invention are not limited to those given in the present embodiment example.
As shown in fig. 1, a battery unit dynamic balancing and protection control system of an energy storage system is characterized in that a battery unit real-time control module (14) and a control module communication connection terminal (T1) are respectively connected with a first controllable switch K1, a second controllable switch K2 and a third controllable switch K3 through switch control lines (23), and each battery of a battery or a battery pack (21) is connected through a battery monitoring communication line (22), and the battery or the battery pack (21) is respectively connected with a series connection power line (11) configured with the first controllable switch K1, a controlled transition bypass power line (12) configured with the second controllable switch K2 and a resistor R, and a series connection power line (13) configured with the third controllable switch K3, so as to form a switching control path and system for dynamic balancing and protection of an online controlled battery unit (200) and the battery or the battery pack (21).
As shown in fig. 1-2, the battery unit dynamic balancing and protecting control system of the energy storage system is characterized in that two or more online controlled battery units (200) are connected in series to form a battery group string cluster (300) for controlling dynamic switching of each battery or battery pack (21); the positive poles of the one or more battery string clusters (300) are connected to the power converter (310) through the positive pole direct current bus (340) and the negative poles of the battery string clusters (300) through the negative pole direct current bus (350), and the energy storage system control device (320) is respectively connected with each battery unit real-time control module (14) and the power converter (310) through the system control communication line (330), so that the battery or battery pack (21) forms the battery energy storage system with on-line controlled switching and balanced.
As shown in fig. 1, the battery unit dynamic balancing and protecting control system of the energy storage system is characterized in that one end of a group string connecting power line (11) configured with a first controllable switch K1 is connected with the positive electrode or the negative electrode of a battery or a battery pack (21), the other end is simultaneously connected with a controlled transition bypass power line (12) configured with a second controllable switch K2 and a resistor R and a group string connecting power line (13) configured with a third controllable switch K3, the controlled transition bypass power line (12) configured with the second controllable switch K2 and the resistor R and the group string connecting power line (13) configured with the third controllable switch K3 are simultaneously connected with the other end of the same battery or the negative electrode or the positive electrode of the battery pack (21), and are respectively connected with the first controllable switch K1, the second controllable switch K2 and the third controllable switch K3 by a battery unit real-time control module (14) through a switch control line (23), and each battery of the battery unit real-time control module (14) is connected with the battery or the battery pack (21) through a battery monitoring communication line (22); the method is also characterized in that when a battery or a battery pack (21) is cut out, the second controllable switch K2 is controlled to be closed, the third controllable switch K3 is opened, the first controllable switch K1 is closed and the second controllable switch K2 is opened to be closed, and a bypass is used for replacing the path of the battery or the battery pack (21); when the battery or the battery pack (21) is put into, the second controllable switch K2 is controlled to be closed, the first controllable switch K1 is opened, the third controllable switch K3 is closed and the second controllable switch K2 is opened, and the bypass is switched to the path of the battery or the battery pack (21); an on-line controlled battery unit (200) and a switching control path for dynamic equalization and protection of the battery unit are formed.
The dynamic balancing control system for the battery unit of the energy storage system is characterized in that the dynamic balancing control is that when the voltage or the electric quantity of a battery or a battery pack (21) is monitored to deviate and is higher than a set value in the charging operation process of the energy storage system, a battery unit real-time control module (14) controls the battery or the battery pack (21) to be cut out, other battery units (200) in a battery pack cluster (300) continue the charging operation, and when the deviation is smaller than the set value required by the charging operation of the battery or the battery pack (21), the battery unit real-time control module (14) controls the charging operation of the battery or the battery pack (21).
The dynamic balancing and protecting control system for the battery units of the energy storage system is characterized in that the dynamic balancing control is used for controlling the battery or the battery pack (21) to be cut out by a battery unit real-time control module (14) when the deviation of the voltage or the electric quantity of the battery or the battery pack (21) is monitored and is lower than a set value in the discharging operation process of the energy storage system, other battery units in a battery pack cluster (300) continue to discharge and operate, and when the deviation is smaller than the set value required by the throwing of the battery or the battery pack (21), the battery unit real-time control module (14) controls the throwing of the battery or the battery pack (21).
The battery cell dynamic balancing and protecting control system of the energy storage system is characterized in that the battery cell dynamic balancing and protecting control system of the energy storage system operates in the following control mode:
1) When the battery unit real-time control module (14) monitors abnormal faults of the battery or the battery pack (21), the battery or the battery pack (21) is directly controlled to be cut out;
2) The energy storage system control device (320) monitors the voltage, temperature and electric quantity parameters of each battery or battery pack (21) in real time by collecting the real-time control module (14) of each battery unit, and controls the power of the power converter (310) or sends a regulation and control instruction to the corresponding real-time control module (14) of the battery unit when the deviation exceeds a set control threshold value, so as to cut out the corresponding battery or battery pack (21); when the parameters are recovered to be normal, sending a regulating instruction to a corresponding battery unit real-time control module (14), and throwing corresponding batteries or battery packs (21); and performing the operation of balancing and reducing the inconsistency deviation.
The invention relates to a battery unit dynamic balancing and protecting control system of an energy storage system, which aims at the congenital defect of the battery energy storage system caused by the inconsistency of a battery and the generated and aggravated inconsistency in the connecting and running processes, adopts a battery unit real-time control module and a control module communication connection terminal, respectively connects a first controllable switch K1, a second controllable switch K2 and a third controllable switch K3 through switch control lines and controls the on-off of corresponding switches, and performs the control of dynamic balancing of the electric quantity of the battery unit and abnormal protection cutting-out of the battery unit; the battery charging and discharging power is dynamically regulated, the charging and discharging electric quantity is balanced, the electric quantity inconsistency among the batteries or battery packs is reduced, the abnormal batteries or battery packs are cut out on line in time, the batteries are ensured to run in safe, healthy and efficient states, and a safe, convenient and effective solution is provided for the battery energy storage system.

Claims (6)

1. The battery unit dynamic equalization and protection control system of the energy storage system is characterized in that a battery unit real-time control module and a control module communication connection terminal are respectively connected with a first controllable switch K1, a second controllable switch K2 and a third controllable switch K3 through switch control lines, each battery of a battery or a battery pack is connected through a battery monitoring communication line, and the battery or the battery pack is respectively connected with a group serial connection power line configured with the first controllable switch K1, a controlled transition bypass power line configured with the second controllable switch K2 and a resistor R, and a group serial connection power line configured with the third controllable switch K3 to form a switching control path and system for dynamic equalization and protection of an online controlled battery unit and the battery or the battery pack.
2. The system of claim 1, wherein two or more on-line controlled cells are connected in series to form a battery string cluster for controlled dynamic switching of each battery or battery pack; and the energy storage system control device is respectively connected with the battery unit real-time control module and the power converter through the system control communication line to form a battery or battery pack on-line controlled switching and balanced battery energy storage system.
3. The battery unit dynamic balancing and protecting control system of an energy storage system according to claim 1, wherein one end of a group string provided with a first controllable switch K1 is connected with the anode or cathode of a battery or a battery pack, the other end is simultaneously connected with one end of a controlled transition bypass power line provided with a second controllable switch K2 and a resistor R and a group string provided with a third controllable switch K3, the other ends of the group string provided with the second controllable switch K2 and the resistor R and the group string provided with the third controllable switch K3 are connected with the anode or cathode of the same battery or battery pack, and the battery unit real-time control module is respectively connected with the first controllable switch K1, the second controllable switch K2 and the third controllable switch K3 through switch control lines, and the battery unit real-time control module is connected with each battery of the battery or the battery pack through a battery monitoring communication line; the method is also characterized in that when a battery or a battery pack is cut out, the second controllable switch K2 is controlled to be closed, the third controllable switch K3 is opened, the first controllable switch K1 is closed and the second controllable switch K2 is opened to be closed, and a bypass is used for replacing a battery or a battery pack path; when the battery or the battery pack is put into, the second controllable switch K2 is controlled to be closed, the first controllable switch K1 is opened, the third controllable switch K3 is closed and the second controllable switch K2 is opened, and the bypass is switched to a battery or battery pack path; the on-line controlled battery unit and the switching control path for dynamic equalization and protection of the battery unit are formed.
4. The system according to claims 1-2, wherein the dynamic balancing control is that when the voltage or the electric quantity of the battery or the battery pack is monitored to deviate and is higher than a set value in the charging operation process of the energy storage system, the battery real-time control module controls the battery or the battery pack to be cut out, other battery units in the battery pack cluster continue to perform charging operation, and when the deviation is smaller than the set value required by the battery or the battery pack, the battery real-time control module controls the battery or the battery pack to be put into.
5. The system according to claims 1-2, wherein the dynamic balancing control is that when the voltage or the electric quantity of the battery or the battery pack is monitored to deviate and is lower than a set value in a discharging operation process of the energy storage system, the battery unit real-time control module controls the battery or the battery pack to be cut out, other battery units in the battery pack cluster continue to discharge and operate, and when the deviation is smaller than the set value required by the battery or the battery pack, the battery unit real-time control module controls the battery or the battery pack to be put into.
6. The battery cell dynamic balancing and protecting control system of an energy storage system according to claims 1-2, wherein the battery cell dynamic balancing and protecting control system of the energy storage system operates in the following control manner:
1) When the battery unit real-time control module monitors abnormal faults of the battery or the battery pack, the battery or the battery pack is directly controlled to be cut out;
2) The energy storage system control device monitors the voltage, temperature and electric quantity parameters of each battery or battery pack in real time through collecting the real-time control modules of each battery unit, and when the deviation exceeds a set control threshold value, the power of the power converter is controlled, or a regulating and controlling instruction is sent to the corresponding real-time control module of the battery unit, and corresponding batteries or battery packs are cut out; when the parameters are recovered to be normal, sending a regulating instruction to a corresponding battery unit real-time control module, and throwing corresponding batteries or battery packs; and performing the operation of balancing and reducing the inconsistency deviation.
CN202210113813.6A 2022-02-07 2022-02-07 Battery unit dynamic equalization and protection control system of energy storage system Pending CN116599168A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210113813.6A CN116599168A (en) 2022-02-07 2022-02-07 Battery unit dynamic equalization and protection control system of energy storage system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210113813.6A CN116599168A (en) 2022-02-07 2022-02-07 Battery unit dynamic equalization and protection control system of energy storage system

Publications (1)

Publication Number Publication Date
CN116599168A true CN116599168A (en) 2023-08-15

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CN202210113813.6A Pending CN116599168A (en) 2022-02-07 2022-02-07 Battery unit dynamic equalization and protection control system of energy storage system

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