CN113270652B - Energy storage system and battery fault processing method - Google Patents
Energy storage system and battery fault processing method Download PDFInfo
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- CN113270652B CN113270652B CN202110518588.XA CN202110518588A CN113270652B CN 113270652 B CN113270652 B CN 113270652B CN 202110518588 A CN202110518588 A CN 202110518588A CN 113270652 B CN113270652 B CN 113270652B
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/4207—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells for several batteries or cells simultaneously or sequentially
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
- 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
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
- H01M2010/4271—Battery management systems including electronic circuits, e.g. control of current or voltage to keep battery in healthy state, cell balancing
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
- H01M2010/4278—Systems for data transfer from batteries, e.g. transfer of battery parameters to a controller, data transferred between battery controller and main controller
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Abstract
The utility model provides an energy storage system, includes the generating line and many branch circuits of being connected with the generating line, many branch circuits are parallelly connected to be set up, are equipped with battery cluster and circuit breaker on every branch circuit, and energy storage system still includes: each battery management system is connected with a battery cluster and a circuit breaker in the same branch, and the battery management systems are used for detecting the state of the battery clusters; each battery management system is also connected to the bus through the first connecting wire, and the battery management systems can be continuously activated to start when voltage exists in the bus; and the plurality of battery management systems are connected to the monitoring unit through respective communication ports and used for feeding back information of the battery clusters to the monitoring unit, and the monitoring unit controls the branch circuits to be switched off or on with the bus through the battery management systems and the circuit breakers. The application also provides a battery fault processing method. According to the energy storage system and the battery fault processing method, the availability of the energy storage system is improved while the battery cluster with the fault is protected.
Description
Technical Field
The application relates to the technical field of batteries, in particular to an energy storage system and a battery fault processing method.
Background
The single battery is an independent energy storage unit, and because the voltage grade of each battery is low, the batteries are required to be connected in series to form a battery cluster, then each battery cluster is connected in parallel into a bus to form an energy storage system, and the bus is used for external grid-connected charging and discharging. When a single battery cluster triggers a fault threshold value in the operation process of an energy storage system, the conventional fault processing method is generally divided into two methods, wherein the first method is realized by cutting off the connections between all the battery clusters and a bus and then electrifying and starting again after the fault is cleared; the second method continues by shutting down the failed battery cluster and the remaining battery clusters.
Disclosure of Invention
In the process of implementing the present application, the inventor finds that at least the following problems exist in the prior art: the first method can cause the entire energy storage system to be powered down, affecting availability. In the second method, after the connection between the failed Battery cluster and the bus is cut off, a Battery Management System (BMS) in the Battery cluster continuously consumes the electric quantity in the failed Battery cluster, thereby causing the failed Battery cluster to be under-voltage or scrapped.
In view of the above, it is desirable to provide an energy storage system and a battery failure handling method, which aim to protect a failed battery cluster and improve the usability of the energy storage system.
The embodiment of the application provides an energy storage system, including the generating line and with many branch circuits that the generating line is connected, many parallelly connected settings of branch circuits, every be equipped with battery cluster and circuit breaker on the branch circuit, energy storage system still includes: each battery management system is connected with the battery cluster and the circuit breaker in the same branch, and the battery management systems are used for detecting the state of the battery cluster; each battery management system is also connected to the bus through the first connecting wire, and the battery management systems can be continuously activated to start when voltage exists in the bus; the monitoring unit is connected with the plurality of battery management systems through respective communication ports and used for feeding back information of the battery clusters to the monitoring unit, and the monitoring unit controls the branch circuits and the buses to be switched off or on through the battery management systems and the circuit breakers.
In an implementable manner, when a battery cluster of one or a plurality of the branch circuits has a fault, the monitoring unit controls the branch circuit with the fault to be cut off from the bus; when the battery management system in the cut branch detects that the voltage of the corresponding battery cluster is reduced to a preset value, the monitoring unit controls the rest branch and the bus to be cut off so as to enable the bus voltage to return to zero.
In an implementable manner, the energy storage system controls the branch circuit to be switched off or on with the bus bar in a manual mode.
In an implementation manner, the energy storage system further includes a second connection line for connecting a load, and a converter connected between the bus and the second connection line, the converter including a booster for boosting the voltage of the bus to a voltage required by the second connection line.
In an implementation manner, the converter further includes a voltage reducer for reducing the voltage of the second connection line to the bus bar required voltage, which is the charging voltage of the battery cluster.
In an implementation manner, the monitoring unit includes a processor and a memory, the memory includes an obtaining module, a determining module, a monitoring module and an executing module, and the processor is configured to execute the following steps: the acquisition module is used for acquiring the information of the battery cluster detected by the battery management system; the judging module is used for judging whether the battery cluster meets the fault condition; the execution module is used for controlling the branch with the fault to be cut off from the bus when the judgment module judges that the battery cluster meets the fault condition; the monitoring module is used for monitoring the voltage of the battery cluster in the cut branch; and the execution module is also used for controlling the rest branches to be cut off from the bus when the voltage of the battery cluster of the cut-off branch is reduced to a preset value.
In an implementable manner, the fault condition includes: the current of the battery cluster is over-current or under-current, the voltage of the battery cluster is under-voltage or over-voltage, and the temperature of the battery cluster is over-temperature or low-temperature.
The embodiment of the application also provides a battery fault processing method, which specifically comprises the following steps: acquiring information of a battery cluster; judging whether the battery cluster meets a fault condition; when the battery cluster meets the fault condition, controlling the branch circuit with the fault to be cut off from the bus; monitoring the voltage of the battery clusters in the disconnected branch; and when the voltage of the battery cluster in the cut-off branch circuit is reduced to a preset value, controlling the rest branch circuit to be cut off from the bus.
In an implementable manner, the preset value is an undervoltage point of the battery cluster.
According to the energy storage system and the battery fault processing method, when one or more branch circuits of the battery cluster have faults, the branch circuits and the buses with the faults are cut off, so that the rest battery clusters still run normally, the interruption of the whole energy storage system is avoided, and the usability of the energy storage system is improved. When the voltage of the battery cluster in the cut branch is reduced to a preset value, the voltage of the bus returns to zero by controlling the rest branch and the bus to be cut off, and the risk that the first connecting line continuously activates the battery management system to start, so that the battery cluster is undervoltage and scrapped is reduced.
Drawings
Fig. 1 is a schematic structural diagram of an energy storage system according to an embodiment of the present application.
Fig. 2 is a schematic structural diagram of a memory and a processor according to an embodiment of the present application.
Fig. 3 is a schematic flow chart illustrating a battery failure processing method according to an embodiment of the present application.
Description of the main elements
First connecting line 60
Determining module 712
Second connecting line 80
Converter 81
Step-down transformer 812
Detailed Description
The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments.
It will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. When an element is referred to as being "on" another element, it can be directly on the other element or intervening elements may also be present. The terms "top," "bottom," "upper," "lower," "left," "right," "front," "back," and the like as used herein are for purposes of description only.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the present application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.
The embodiment of the application provides an energy storage system, including the generating line and with many branch circuits of generating line connection, many branch circuits are parallelly connected to be set up, are equipped with battery cluster and circuit breaker on every branch circuit, energy storage system still includes: each battery management system is connected with a battery cluster and a circuit breaker in the same branch, and the battery management systems are used for detecting the state of the battery clusters; each battery management system is also connected to the bus through the first connecting line, the battery management systems can be continuously activated to start when voltage exists in the bus, the voltage in the bus only plays a role of activating the battery management systems, and the voltage required by the normal work of the battery management systems needs to be provided by the corresponding battery clusters; the monitoring unit is used for feeding back information of the battery clusters to the monitoring unit, the monitoring unit controls the branch circuits to be disconnected or connected with the bus through the battery management systems and the circuit breakers, and when one or more branch circuits of the battery clusters have faults, the monitoring unit controls the branch circuits with the faults to be disconnected with the bus; when the battery management system in the cut-off branch circuit detects that the voltage of the corresponding battery cluster is reduced to a preset value, the monitoring unit controls the remaining branch circuits and the bus to be cut off so as to enable the bus voltage to return to zero.
The embodiment of the application further provides a battery fault processing method, which specifically comprises the following steps: acquiring information of a battery cluster detected by a battery management system; judging whether the battery cluster meets a fault condition; when the battery cluster meets the fault condition, controlling the branch circuit with the fault to be cut off from the bus; monitoring the voltage of the battery cluster in the cut-off branch; and when the voltage of the battery cluster in the cut-off branch circuit is reduced to a preset value, the rest branch circuits are controlled to be cut off from the bus.
In the energy storage system and the battery fault processing method, when one or more branch circuits of the battery clusters have faults, the connection between the fault branch circuits and the buses is cut off, so that the rest battery clusters still run normally, the interruption of the whole energy storage system is avoided, and the usability of the energy storage system is improved. When the voltage of the battery cluster in the cut branch is reduced to a preset value, the voltage of the bus is enabled to return to zero by controlling the cut of the rest branch and the bus, and the risk that the first connecting line continuously activates the battery management system to start, so that the battery cluster is under-voltage and scrapped is reduced.
Some embodiments will be described in detail below with reference to the accompanying drawings. The embodiments described below and the features of the embodiments can be combined with each other without conflict.
Referring to fig. 1, fig. 1 is a schematic structural diagram of an energy storage system according to an embodiment of the present disclosure. The energy storage system 100 of this embodiment includes a bus 10 and a plurality of branches 20 connected to the bus 10, where the plurality of branches 20 are connected in parallel, and each branch 20 is provided with a battery cluster 30 and a circuit breaker 40. The battery cluster 30 is used for storing or releasing electric energy through the bus bar 10, and the circuit breaker 40 is used for controlling the branch circuit 20 to be disconnected or connected with the bus bar 10.
The energy storage system 100 further includes a plurality of battery management systems 50, a first connection line 60, and a monitoring unit 70. Each battery management system 50 is connected to the battery cluster 30 and the circuit breaker 40 in the same branch 20, and the battery management system 50 is used for detecting the state of the battery cluster 30. Each battery management system 50 is further connected to the bus bar 10 through a first connection line 60, the battery management system 50 is continuously activated to start when voltage exists in the bus bar 10, and the voltage in the bus bar 10 only plays a role of activating the battery management system 50, and the voltage required by the battery management system 50 to normally operate needs to be provided by the corresponding battery cluster 30. The plurality of battery management systems 50 are connected to the monitoring unit 70 through respective communication ports for feeding back information of the battery clusters 30 to the monitoring unit 70, and the monitoring unit 70 controls the branch circuit 20 to be disconnected or connected with the bus 10 through the battery management systems 50 and the circuit breaker 40.
When one or more of the branch circuits 20 of the battery cluster 30 has a fault, the monitoring unit 70 controls the branch circuit 20 with the fault to be cut off from the bus bar 10; when the battery management system 50 in the cut-off branch circuit 20 detects that the voltage of the corresponding battery cluster 30 decreases to a preset value, the monitoring unit 70 controls the remaining branch circuits 20 to be cut off from the bus 10, so as to zero the voltage of the bus 10. Because the voltage in the bus 10 only plays a role in activating the battery management system 50, the voltage required by the normal operation of the battery management system 50 needs to be provided by the corresponding battery cluster 30, and the zero return of the voltage of the bus 10 is controlled, so that the situation that the battery management system 50 which is continuously activated consumes the electric quantity of the battery cluster 30 in the cut branch circuit 20 is avoided, and the risk that the first connecting line 60 continuously activates the battery management system 50 to start, which causes the battery cluster 30 to be under-voltage and scrapped is reduced.
In the energy storage system 100, when a battery cluster 30 of one or more branches 20 has a fault, the remaining battery clusters 30 still operate normally by cutting off the branch 20 and the bus 10 having the fault, so that the interruption of the whole energy storage system 100 is avoided, and the availability of the energy storage system 100 is improved. When the voltage of the battery cluster 30 in the cut branch circuit 20 is reduced to the preset value, the voltage of the bus 10 is reset to zero by controlling the remaining branch circuit 20 and the bus 10 to be cut off, so that the situation that the battery management system 50 which is continuously activated consumes the electric quantity of the battery cluster 30 in the cut branch circuit 20 is avoided, and the risk that the battery cluster 30 is under-voltage and scrapped due to the fact that the first connecting line 60 continuously activates the battery management system 50 to start is reduced.
In some embodiments, the preset value is an under-voltage point of the battery cluster 30. For example, the under-voltage point of the 24V battery cluster 30 is 21V, the under-voltage point of the 36V battery cluster 30 is 31.5V, and the under-voltage point of the 48V battery cluster 30 is 42V.
In some embodiments, the battery cluster 30 includes a plurality of cells (not shown) connected in series to increase the battery capacity of the battery cluster 30. It is understood that in other embodiments, the battery cluster 30 may include a single cell.
In some embodiments, the Battery Management System 50 is a Battery Management System (BMS). The battery management system is a real-time monitoring system composed of electronic circuit devices. The temperature, voltage, current, humidity, insulation state, charge state and the like of the battery cluster 30 and the battery cell are effectively monitored, the charging and discharging processes of the battery cluster 30 and the battery cell are safely managed, possible faults are alarmed and emergently protected, and the operation of the battery cluster 30 and the battery cell is safely and optimally controlled.
Referring to fig. 1, in some embodiments, the energy storage system 100 further includes a second connection line 80 and a converter 81. The second connection line 80 is used for connecting a load 90, and the converter 81 is connected between the bus 10 and the second connection line 80 and is used for converting the voltages of the bus 10 and the second connection line 80, so that the voltage of the second connection line 80 is adapted to the voltage required by the load when the battery cluster 30 is discharged, or the voltage of the bus 10 is adapted to the charging voltage of the battery cluster 30 when the battery cluster 30 is charged, thereby improving the universality of the energy storage system 100.
Specifically, the converter 81 includes a booster 811, and the booster 811 is used to boost the voltage of the bus bar 10 to the voltage required for the second connection line 80. The converter 81 further includes a voltage reducer 812, and the voltage reducer 812 is configured to reduce the voltage of the second connection line 80 to a voltage required by the bus 10, where the voltage required by the bus 10 is a charging voltage of the battery cluster 30.
Referring to fig. 2, fig. 2 is a schematic structural diagram of a monitoring unit according to an embodiment of the present application. The monitoring unit 70 of the present embodiment includes a plurality of functional modules composed of program code segments, and the program code of each program segment in the monitoring unit 70 can be stored in the memory 71 of the monitoring unit 70 and executed by the at least one processor 72 to control the switching-off or switching-on of the branch circuit 20 and the bus.
The monitoring unit 70 may be divided into a plurality of functional modules according to the functions it performs. The functional module may include: the acquiring module 711, the determining module 712, the monitoring module 713 and the executing module 714, wherein the acquiring module 711, the determining module 712, the monitoring module 713 and the executing module 714 are executed by the processor 72 to implement the following steps:
the obtaining module 711 is configured to obtain information of the battery cluster 30 detected by the battery management system 50;
the determining module 712 is used for determining whether the battery cluster 30 satisfies the fault condition;
the execution module 714 is configured to, when the determining module 712 determines that the battery cluster 30 meets the fault condition, control the branch 20 with the fault to be disconnected from the bus 10;
the monitoring module 713 is used for monitoring the voltage of the battery clusters 30 in the cut branch circuit 20;
the execution module 714 is further configured to control the remaining branches 20 to be disconnected from the bus bar 10 when the voltage of the battery cluster 30 of the disconnected branch 20 decreases to a preset value.
Specifically, in some embodiments, the fault condition includes: one or more of an overcurrent or undercurrent of the battery cluster 30, an undervoltage or overvoltage of the battery cluster 30, an over-temperature or a low temperature of the battery cluster 30. It is understood that in other embodiments, the fault condition further includes the humidity of the battery cluster 30 exceeding a preset humidity, and the like.
Specifically, in some embodiments, the predetermined value is an under-voltage point of the battery cluster 30.
In the energy storage system 100, the battery management system 50 and the circuit breaker 40 are controlled by the obtaining module 711, the judging module 712, the monitoring module 713, the executing module 714 in the memory 71 and the processor 72 to control the branch circuit 20 and the bus 10 to be disconnected or connected. When one or more branch circuits 20 have faults, the branch circuits 20 with the faults are cut off from the bus 10, so that the rest of the battery clusters 30 still operate normally, the whole energy storage system 100 is prevented from being interrupted, and the availability of the energy storage system 100 is improved. When the voltage of the battery cluster 30 in the cut branch circuit 20 is reduced to the preset value, the voltage of the bus 10 is reset to zero by cutting off and controlling the rest branch circuit 20 and the bus 10, so that the situation that the battery management system 50 which is continuously activated consumes the electric quantity of the battery cluster 30 in the cut branch circuit 20 is avoided, and the risk that the first connecting line 60 continuously activates the battery management system 50 to start, so that the battery cluster 30 is damaged due to undervoltage is reduced.
Referring to fig. 3, fig. 3 is a schematic flow chart illustrating a battery fault handling method according to an embodiment of the present application. The battery fault processing method comprises the following steps:
s1, acquiring information of a battery cluster 30;
s2, judging whether the battery cluster 30 meets a fault condition;
s3, when the battery cluster 30 meets the fault condition, controlling the branch circuit 20 with the fault to be cut off from the bus 10;
s4, monitoring the voltage of the battery cluster 30 in the cut branch circuit 20;
and S5, when the voltage of the battery cluster 30 in the cut branch circuit 20 is reduced to a preset value, controlling the rest branch circuit 20 to be cut off from the bus 10.
In some embodiments, the preset value is an under-voltage point of the battery cluster 30.
In some embodiments, the circuit breaker 40 is controlled by the battery management system 50 to control the corresponding branch circuit 20 to be disconnected from the bus bar 10. It is understood that in other embodiments, the corresponding branch circuit 20 is manually controlled to be switched off and on from the bus bar 10.
In the above battery fault processing method, when a battery cluster 30 of one or more branches 20 has a fault, the remaining battery clusters 30 still operate normally by cutting off the branch 20 with the bus 10, so as to avoid the interruption of the whole energy storage system 100 and improve the availability of the battery. When the voltage of the battery clusters 30 in the cut-off branch circuit 20 is reduced to a preset value, the voltage of the bus 10 is reset to zero by cutting off the connection between the remaining branch circuits 20 and the bus 10. Because the voltage in the bus 10 only plays a role in activating the battery management system 50, the voltage required by the normal operation of the battery management system 50 needs to be provided by the corresponding battery cluster 30, and the zero return of the voltage of the bus 10 is controlled, so that the situation that the battery management system 50 which is continuously activated consumes the electric quantity of the battery cluster 30 in the cut branch circuit 20 is avoided, and the risk that the first connecting line 60 continuously activates the battery management system 50 to start, which causes the battery cluster 30 to be under-voltage and scrapped is reduced.
In addition, those skilled in the art should recognize that the above embodiments are provided for illustration only, and not for the purpose of limiting the invention, and that suitable modifications and variations of the above embodiments are possible within the spirit and scope of the disclosure.
Claims (8)
1. The utility model provides an energy storage system, including the generating line and with many branch circuits that the generating line is connected, many branch circuits are parallelly connected to be set up, every be equipped with battery cluster and circuit breaker on the branch circuit, its characterized in that: the energy storage system further includes:
each battery management system is connected with the battery clusters and the circuit breaker in the same branch, and is used for detecting the states of the battery clusters, and the voltages required by the normal work of the battery management systems need to be provided by the corresponding battery clusters;
each battery management system is also connected to the bus through the first connecting wire, and the battery management systems can be continuously activated to start when voltage exists in the bus;
the monitoring unit is used for feeding back information of the battery clusters to the monitoring unit through respective communication ports, the monitoring unit controls the branch circuits and the bus to be switched off or on through the battery management systems and the circuit breakers, and when one or more of the branch circuits have a fault, the monitoring unit controls the branch circuits with the fault to be switched off from the bus; when the battery management system in the cut branch detects that the voltage of the corresponding battery cluster is reduced to a preset value, the monitoring unit controls the rest branch and the bus to be cut off so as to enable the bus voltage to return to zero.
2. The energy storage system of claim 1, wherein: the energy storage system controls the branch circuit and the bus to be switched off or on in a manual mode.
3. The energy storage system of claim 1, wherein: the energy storage system further comprises a second connecting line and a converter, the second connecting line is used for connecting a load, the converter is connected between the bus and the second connecting line, the converter comprises a booster, and the booster is used for boosting the voltage of the bus to the voltage required by the second connecting line.
4. The energy storage system of claim 3, wherein: the converter further comprises a voltage reducer, wherein the voltage reducer is used for reducing the voltage of the second connecting line to the voltage required by the bus, and the voltage required by the bus is the charging voltage of the battery cluster.
5. The energy storage system of claim 1, wherein: the monitoring unit comprises a processor and a memory, the memory comprises an acquisition module, a judgment module, a monitoring module and an execution module, and the processor is used for executing the following steps:
the acquisition module is used for acquiring the information of the battery cluster detected by the battery management system;
the judging module is used for judging whether the battery cluster meets the fault condition;
the execution module is used for controlling the branch with the fault to be cut off from the bus when the judgment module judges that the battery cluster meets the fault condition;
the monitoring module is used for monitoring the voltage of the battery cluster in the cut branch;
and the execution module is also used for controlling the rest branches to be cut off from the bus when the voltage of the battery cluster of the cut-off branch is reduced to a preset value.
6. The energy storage system of claim 5, wherein: the fault conditions include: the current of the battery cluster is over-current or under-current, the voltage of the battery cluster is under-voltage or over-voltage, and the temperature of the battery cluster is over-temperature or low-temperature.
7. A battery fault processing method is characterized in that: the battery fault processing method specifically comprises the following steps:
providing an energy storage system according to any one of claims 1-6;
acquiring information of a battery cluster;
judging whether the battery cluster meets a fault condition;
when the battery cluster meets the fault condition, controlling the branch circuit with the fault to be cut off from the bus;
monitoring the voltage of the battery clusters in the disconnected branch; and
and when the voltage of the battery cluster in the cut-off branch circuit is reduced to a preset value, controlling the rest branch circuit to be cut off from the bus.
8. The fault handling method of claim 7, wherein: the preset value is an under-voltage point of the battery cluster.
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108859764A (en) * | 2017-11-01 | 2018-11-23 | 深圳市仕威新能源有限公司 | Battery emergency failure method of disposal, device, system and automobile |
| CN110588434A (en) * | 2019-09-17 | 2019-12-20 | 阳光电源股份有限公司 | Energy storage system and battery management method and system thereof |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103270666B (en) * | 2010-11-02 | 2018-01-30 | 纳维达斯解决方案有限公司 | Wireless battery Local Area Network for intelligent battery management |
| DE102015105429B4 (en) * | 2015-04-09 | 2018-03-01 | Hoppecke Advanced Battery Technology Gmbh | Power supply device, battery management system and method for operating a battery management system |
| CN205160115U (en) * | 2015-10-30 | 2016-04-13 | 深圳市比亚迪锂电池有限公司 | Battery management system |
| CN107104453A (en) * | 2017-05-11 | 2017-08-29 | 沃太能源南通有限公司 | A kind of many clusters of the container for having multi-stage protection concurrently energy-storage system in parallel |
-
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108859764A (en) * | 2017-11-01 | 2018-11-23 | 深圳市仕威新能源有限公司 | Battery emergency failure method of disposal, device, system and automobile |
| CN110588434A (en) * | 2019-09-17 | 2019-12-20 | 阳光电源股份有限公司 | Energy storage system and battery management method and system thereof |
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|---|---|
| CN113270652A (en) | 2021-08-17 |
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