CN116436950B - Battery management system and verification method thereof - Google Patents

Battery management system and verification method thereof Download PDF

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CN116436950B
CN116436950B CN202310693149.1A CN202310693149A CN116436950B CN 116436950 B CN116436950 B CN 116436950B CN 202310693149 A CN202310693149 A CN 202310693149A CN 116436950 B CN116436950 B CN 116436950B
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bms
primary
level
bmss
tertiary
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CN116436950A (en
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封森
王斌
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Guangdong Cairi Energy Technology Co ltd
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Guangdong Cairi Energy Technology Co ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/01—Protocols
    • H04L67/12—Protocols specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
    • G01R31/382—Arrangements for monitoring battery or accumulator variables, e.g. SoC
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00—Traffic control in data switching networks
    • H04L47/10—Flow control; Congestion control
    • H04L47/12—Avoiding congestion; Recovering from congestion
    • 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
    • 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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  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • General Physics & Mathematics (AREA)
  • Medical Informatics (AREA)
  • General Health & Medical Sciences (AREA)
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  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Microelectronics & Electronic Packaging (AREA)
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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Remote Monitoring And Control Of Power-Distribution Networks (AREA)

Abstract

The application provides a battery management system and a verification method thereof, wherein the method is applied to the battery management system; aiming at a plurality of tertiary BMSs connected with each secondary BMS, the primary BMS gathers first characteristic values corresponding to the plurality of tertiary BMSs through a routing switch connected with the tertiary BMS; acquiring second characteristic values corresponding to a plurality of three-level BMSs summarized by the two-level BMS through a routing switch connected with the three-level BMS through the routing switch connected with the two-level BMS; and judging whether the difference value of the characteristic values exceeds a first preset threshold value, if so, determining that the secondary BMS operates abnormally, and giving an alarm. According to the application, networking data interaction is performed among the primary BMS, the secondary BMS and the tertiary BMS through the broadband router, so that the transmission distance of the system is increased, the data throughput and the data transmission efficiency of the system are increased, the abnormal operation of the system can be found in time through a characteristic value comparison mode, and the communication reliability is improved.

Description

Battery management system and verification method thereof
Technical Field
The application relates to the technical field of energy storage equipment, in particular to a battery management system and a verification method thereof.
Background
The three-level structure of BMS of current BMS energy storage equipment adopts the CAN bus to carry out data transmission often, when system software appears Bug, hardware trouble or communication is unusual, gathers three-level BMS's data through second grade BMS and carries out safety monitoring management, second grade BMS gathers the data of three-level BMS who gathers (including temperature, electric quantity, the voltage of battery) for one-level BMS, one-level BMS compares whether the data that second grade BMS gathered surpasss the default to output corresponding alarm signal, wait for the system maintenance, thereby control risk, reduce the potential safety hazard.
In current BMS energy storage equipment, energy storage BMS intranet all is with CAN bus network deployment, and data throughput and communication distance receive very big restriction. Especially when the number of three-level BMSs to be summarized is large, data transmission blockage may occur, resulting in system crash. In addition, when the monitoring data collected by the secondary BMS exceeds a preset value and is abnormal, only an alarm signal can be sent to wait for maintenance, the system cannot work normally when the system fails, and the system communication reliability is low and the stability is poor.
Disclosure of Invention
The application aims to provide a battery management system and a verification method thereof, wherein networking data interaction is carried out among a primary BMS, a plurality of secondary BMSs and a plurality of tertiary BMSs through a broadband router, so that the transmission distance of the system is increased, the data throughput and the data transmission efficiency of the system are increased, and abnormal operation of the system can be found in time through a characteristic value comparison mode, so that the communication reliability is improved.
In a first aspect, an embodiment of the present application provides a method for verifying a battery management system, where the method is applied to the battery management system; the battery management system includes: a primary BMS, a plurality of secondary BMSs, and a plurality of tertiary BMSs; the primary BMS is respectively connected with the plurality of secondary BMSs and the plurality of tertiary BMSs through the routing switch; each secondary BMS is connected with a plurality of tertiary BMSs through a routing switch; the method comprises the following steps: aiming at a plurality of tertiary BMSs connected with each secondary BMS, the primary BMS gathers first characteristic values corresponding to the plurality of tertiary BMSs through a routing switch connected with the tertiary BMS; acquiring second characteristic values corresponding to a plurality of three-level BMSs summarized by the two-level BMS through a routing switch connected with the three-level BMS through the routing switch connected with the two-level BMS; wherein the characteristic value comprises a temperature characteristic value and/or a voltage characteristic value; the temperature characteristic values include: a highest monomer temperature or a lowest monomer temperature; the voltage characteristic values include: highest cell voltage or lowest cell voltage; and judging whether the first difference value of the first characteristic value and the second characteristic value exceeds a first preset threshold value, if so, determining that the secondary BMS is abnormal in operation, and giving an alarm.
In a preferred embodiment of the present application, after the step of determining that the secondary BMS is abnormal in operation and alarming, the method further includes: judging whether the first difference value exceeds a second preset threshold value, and if so, executing a shutdown operation; the second preset threshold is greater than the first preset threshold.
In a preferred embodiment of the present application, the battery management system further includes: a primary standby BMS connected with the plurality of tertiary BMSs and the plurality of secondary BMSs through the routing switch, respectively, and a controller connected with the primary BMS and the primary standby BMS, respectively; the method further comprises the steps of: the controller obtains first characteristic values corresponding to a plurality of three-level BMSs summarized by the first-level BMS and third characteristic values corresponding to a plurality of three-level BMSs summarized by the first-level standby BMS; judging whether a second difference value of the first characteristic value and the third characteristic value exceeds a third preset threshold value, if so, determining that at least one of the primary BMS and the primary standby BMS is abnormal, and executing shutdown operation; if not, determining that the primary BMS and the primary standby BMS are both operating normally.
In a preferred embodiment of the present application, after the step of determining that the primary BMS and the primary backup BMS are both normal, the method further includes: the controller obtains second characteristic values corresponding to a plurality of three-level BMSs summarized by the first-level BMS through the second-level BMS; judging whether a first difference value of the first characteristic value and the second characteristic value exceeds a first preset threshold value, if so, determining that a second-level BMS under the first-level BMS runs abnormally, and giving an alarm; if not, determining that the secondary BMS under the primary BMS runs normally, continuing to run the primary BMS, and keeping the primary standby BMS in a standby state.
In a preferred embodiment of the present application, after the step of determining that the operation of the secondary BMS under the primary BMS is abnormal and performing the alarm, the method further includes: judging whether the first difference value exceeds a second preset threshold value, and if so, executing a shutdown operation; if not, obtaining fourth characteristic values corresponding to a plurality of three-level BMSs summarized by the first-level standby BMS through the second-level BMS; and performing a verification control process based on the first characteristic value and the fourth characteristic value.
In a preferred embodiment of the present application, the step of performing the verification control process based on the first feature value and the fourth feature value includes: judging whether a third difference value of the first characteristic value and the fourth characteristic value exceeds a first preset threshold value, if so, determining that a secondary BMS under the primary standby BMS runs abnormally, and giving an alarm; if not, determining that the second-level BMS under the first-level standby BMS operates normally, controlling the first-level BMS to perform the closing state, and controlling the first-level standby BMS to access the system to operate.
In a preferred embodiment of the present application, after the step of determining that the secondary BMS under the primary backup BMS is abnormal and performing the alarm, the method further includes: and judging whether a third difference value between the first characteristic value and the fourth characteristic value exceeds a second preset threshold value, and if so, executing shutdown operation.
In a second aspect, an embodiment of the present application also provides a battery management system including a primary BMS, a plurality of secondary BMSs, and a plurality of tertiary BMSs; the primary BMS is respectively connected with the plurality of secondary BMSs and the plurality of tertiary BMSs through the routing switch; each secondary BMS is connected with a plurality of tertiary BMSs through a routing switch; a primary BMS is adapted to perform the method as described in the first two aspects.
In a preferred embodiment of the present application, the battery management system further includes: a primary standby BMS connected with the tertiary BMS and the secondary BMS through a routing switch respectively, and a controller connected with the primary BMS and the primary standby BMS respectively; the controller is configured to perform the method as set forth in the fifth and sixth aspects of the first aspect.
In a preferred embodiment of the present application, the routing switch performs data interaction through the Moubus TCP standard protocol.
In the battery management system and the verification method thereof provided by the embodiment of the application, the method is applied to the battery management system; the battery management system includes: a primary BMS, a plurality of secondary BMSs, and a plurality of tertiary BMSs; the primary BMS is respectively connected with the plurality of secondary BMSs and the plurality of tertiary BMSs through the routing switch; each secondary BMS is connected with a plurality of tertiary BMSs through a routing switch; the method comprises the following steps: aiming at a plurality of tertiary BMSs connected with each secondary BMS, the primary BMS gathers first characteristic values corresponding to the plurality of tertiary BMSs through a routing switch connected with the tertiary BMS; acquiring second characteristic values corresponding to a plurality of three-level BMSs summarized by the two-level BMS through a routing switch connected with the three-level BMS through the routing switch connected with the two-level BMS; wherein the characteristic value comprises a temperature characteristic value and/or a voltage characteristic value; the temperature characteristic values include: a highest monomer temperature or a lowest monomer temperature; the voltage characteristic values include: highest cell voltage or lowest cell voltage; and judging whether the first difference value of the first characteristic value and the second characteristic value exceeds a first preset threshold value, if so, determining that the secondary BMS is abnormal in operation, and giving an alarm. According to the embodiment of the application, networking data interaction is performed among the primary BMS, the secondary BMS and the tertiary BMS through the broadband router, so that the transmission distance of the system is increased, the data throughput and the data transmission efficiency of the system are increased, even if the number of the secondary BMS or the tertiary BMS of the system is huge, the system is prevented from being blocked due to the fact that the data quantity to be summarized is too large, and the system is crashed, and abnormal operation of the system can be timely found through the comparison mode, so that the communication reliability is improved.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present application, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
FIG. 1 is a topology of a prior art battery management system;
fig. 2 is a topology diagram of a battery management system according to an embodiment of the present application;
FIG. 3 is a flowchart of a method for verifying a battery management system according to an embodiment of the present application;
FIG. 4 is a topology diagram of another battery management system according to an embodiment of the present application;
FIG. 5 is a flowchart of another method for verifying a battery management system according to an embodiment of the present application;
fig. 6 is a schematic diagram of a verification process of a battery management system according to an embodiment of the present application.
Detailed Description
The technical solutions of the present application will be clearly and completely described in connection with the embodiments, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
In the related art, a topology diagram of a battery management system is shown in fig. 1, and a three-level BMS architecture of the BMS energy storage device adopts a CAN bus for data transmission, so that data throughput and communication distance are greatly limited. Particularly, when the number of three-level BMS to be summarized is large, data transmission blockage can occur, so that the system is crashed; when the monitoring data collected by the secondary BMS exceeds a preset value, when the collection is abnormal, only an alarm signal can be sent out to wait for maintenance, the system cannot work normally when the system fails, and the system communication reliability is low and the stability is poor.
Based on the above, the embodiment of the application provides a battery management system and a verification method thereof, wherein networking data interaction is performed among a primary BMS, a plurality of secondary BMSs and a plurality of tertiary BMSs through a broadband router, so that the transmission distance of the system is increased, the data throughput and the data transmission efficiency of the system are increased, and abnormal operation of the system can be found in time through a characteristic value comparison mode, so that the communication reliability is improved. For the sake of understanding the present embodiment, a method for verifying a battery management system according to the present embodiment will be described in detail.
The embodiment of the application provides a verification method of a battery management system, which is applied to the battery management system; referring to fig. 2, the battery management system includes: a primary BMS, a plurality of secondary BMSs, and a plurality of tertiary BMSs; the primary BMS is respectively connected with the plurality of secondary BMSs and the plurality of tertiary BMSs through the routing switch; each secondary BMS is connected with a plurality of tertiary BMSs through a routing switch; the method is applied to a primary BMS in a system, and as shown in fig. 3, for a plurality of tertiary BMSs to which each secondary BMS is correspondingly connected, the process of performing a verification includes the steps of:
step S302, summarizing first characteristic values corresponding to a plurality of three-level BMSs through a routing switch connected with the three-level BMSs;
step S304, obtaining second characteristic values corresponding to a plurality of three-level BMSs summarized by the two-level BMS through a routing switch connected with the three-level BMS through the routing switch connected with the two-level BMS;
wherein the characteristic value comprises a temperature characteristic value and/or a voltage characteristic value; the temperature characteristic values include: a highest monomer temperature or a lowest monomer temperature; the voltage characteristic values include: highest cell voltage or lowest cell voltage; every second grade BMS all connects a plurality of tertiary BMS that correspond, and every second grade BMS obtains all information of three level BMS of managed through the mode of communication, can calculate the eigenvalue of all tertiary BMS under this second grade BMS, including highest minimum voltage, temperature etc..
Step S306, judging whether the first difference value between the first characteristic value and the second characteristic value exceeds a first preset threshold value;
and step S308, if yes, determining that the secondary BMS is abnormal in operation, and giving an alarm.
In a preferred embodiment of the present application, after the step of determining that the secondary BMS is abnormal in operation and alarming, the method further includes: judging whether the first difference value exceeds a second preset threshold value, and if so, executing a shutdown operation; the second preset threshold is greater than the first preset threshold.
In specific implementation, the first-level BMS is connected with the third-level BMS through a routing switch, and directly gathers characteristic values X1 of the third-level BMS; meanwhile, the secondary BMS is connected with the tertiary BMS through a routing switch, gathers characteristic values X2 of the tertiary BMS, and transmits the characteristic values to the primary BMS through the routing switch; the tertiary BMS eigenvalue X1 that one-level BMS was summarized according to directly compares with the eigenvalue X2 that the second grade BMS was summarized, if eigenvalue X1 and eigenvalue X2's difference surpassed the default, then judge that the second grade BMS appears data summarizing unusual or operation unusual, can in time discover that the system is unusual in operation, improves communication reliability.
The characteristic value is at least one of voltage or temperature. When the characteristic value is voltage or temperature, a specific verification scheme is as follows:
the difference between the three-level BMS characteristic voltage value V1a summarized by the first-level BMS and the characteristic voltage value V2a summarized by the second-level BMS is larger than V1, an alarm is triggered, and the system can continue to operate; the difference between the characteristic voltage value of the three-level BMS summarized by the primary BMS and the characteristic voltage value summarized by the secondary BMS is larger than V2, and the shutdown protection of the system is triggered.
I.e., |v1a-v2a| > V1, triggering an alarm, the system can continue to operate;
v1a-V2a I > V2, stopping for protection, and immediately stopping the system for checking reasons.
The difference between the characteristic temperature value of the three-level BMS summarized by the first-level BMS and the characteristic temperature value summarized by the second-level BMS is larger than T1, and an alarm is triggered; the difference between the characteristic temperature value of the three-level BMS summarized by the primary BMS and the characteristic temperature value summarized by the secondary BMS is larger than T2, the shutdown protection of the system is triggered, and the system needs to be immediately stopped for troubleshooting.
I.e., |T1a-T2a| > T1, an alarm is triggered, and the system can continue to operate;
i T1a-T2a I > T2, shutdown protection, and immediate shutdown of the system is needed for troubleshooting.
The characteristic values of the three-level BMS are summarized by the first-level BMS directly; the secondary BMS firstly gathers the characteristic values of the tertiary BMS, and then transmits the gathered data to the primary BMS, the process is more complex than the process that the primary BMS directly gathers the tertiary BMS, and software Bug, hardware fault and communication abnormality are more likely to occur in the process; therefore, it is generally ascertained that the secondary BMS is abnormal when the comparison characteristic value determines the abnormality.
In the verification method of the battery management system provided by the embodiment of the application, the primary BMS, the secondary BMS and the tertiary BMS are subjected to networking data interaction through the broadband router, so that the transmission distance of the system is increased, the data throughput and the data transmission efficiency of the system are increased, even if the number of the secondary BMS or the tertiary BMS of the system is huge, the system is not crashed due to data blocking caused by too large data quantity to be summarized, and the abnormal operation of the system can be timely found through the comparison mode, and the communication reliability is improved.
The embodiment of the application also provides another verification method of the battery management system, which is implemented on the basis of the previous embodiment, and in this embodiment, the battery management system further includes: a primary standby BMS connected to the plurality of tertiary BMSs and the plurality of secondary BMSs through the routing switch, respectively, as shown in fig. 4, and a controller (not shown) connected to the primary BMS and the primary standby BMS, respectively; the method is applied to a controller in a system, as shown in fig. 5, and specifically comprises the following steps:
step S502, obtaining first characteristic values corresponding to a plurality of three-level BMSs summarized by a first-level BMS and third characteristic values corresponding to a plurality of three-level BMSs summarized by a first-level standby BMS; step S504, judging whether a second difference value between the first characteristic value and the third characteristic value exceeds a third preset threshold value; if yes, determining that at least one of the primary BMS and the primary standby BMS is abnormal, executing step S506, and executing shutdown operation; if not, step S508 is performed to determine that the primary BMS and the primary backup BMS are both operating normally.
In a preferred embodiment of the present application, after the step of determining that the primary BMS and the primary backup BMS are both normal, the method further includes: step S510, obtaining second characteristic values corresponding to a plurality of three-level BMSs summarized by the first-level BMS through the second-level BMS; step S512, judging whether the first difference value between the first characteristic value and the second characteristic value exceeds a first preset threshold value; if yes, executing step S514, determining that the operation of a secondary BMS under the primary BMS is abnormal, and giving an alarm; if not, step S516 is performed to determine that the secondary BMS under the primary BMS is operating normally, the primary BMS continues to operate, and the primary standby BMS is in a standby state.
In a preferred embodiment of the present application, after the step of determining that the operation of the secondary BMS under the primary BMS is abnormal and performing the alarm, the method further includes: step S518, judging whether the first difference exceeds a second preset threshold; if yes, executing step S506, and executing a shutdown operation; if not, executing step S520, and acquiring fourth characteristic values corresponding to a plurality of three-level BMSs summarized by the first-level standby BMS through the second-level BMS; then, performing a verification control process based on the first feature value and the fourth feature value, namely, step S522, to determine whether the third difference value between the first feature value and the fourth feature value exceeds a first preset threshold value; if yes, executing step S524, determining that the operation of the secondary BMS under the primary standby BMS is abnormal, and giving an alarm; if not, step S526 is performed to determine that the secondary BMS under the primary backup BMS is operating normally, control the primary BMS to perform the shutdown state, and control the primary backup BMS to access the system to operate. After the step of determining that the operation of the secondary BMS under the primary standby BMS is abnormal and alarming, the method further comprises the following steps: step S528, judging whether the third difference value between the first characteristic value and the fourth characteristic value exceeds a second preset threshold value; if yes, executing step S506, and executing a shutdown operation; if not, step S524 is continued.
In specific implementation, the primary BMS and the primary standby BMS respectively collect three-level BMS characteristic values (the characteristic values can be voltage characteristic values and temperature characteristic values, and the voltage characteristic values are taken as examples here) through the routing switch at the same time, and the characteristic values are respectively V1a and V1b; meanwhile, the primary BMS and the primary standby BMS collect the tertiary BMS characteristic values of the secondary BMS at the same time through the routing switch respectively, and the tertiary BMS characteristic values are V2a and V2b. When two primary BMSs (primary BMS and primary standby BMS) collect the same characteristic values of the three BMSs (namely, V1 a=V 1 b), or the difference value of the characteristic values does not exceed the preset value range (namely, the |V1a-V1 b|is smaller than or equal to the preset value), the secondary BMS collected by the primary BMS is checked to collect the characteristic values of the three BMSs respectively, the primary standby BMS collects the characteristic values of the secondary BMS to collect the characteristic values of the three BMSs, whether the secondary BMS is abnormal in collection or abnormal in operation is judged, and the specific checking process is shown in fig. 6.
When one-level BMS or one-level reserve BMS gathers the in-process of tertiary BMS eigenvalue that gathers through the second grade BMS, when one of them second grade BMS data summarize unusual, the system can carry out data information through another second grade BMS and summarize (including summarizing other information except voltage eigenvalue and temperature eigenvalue), guarantees system normal operating.
The following describes the voltage characteristic value as an example, and the whole checking flow is as follows, see fig. 6:
(1) Obtain voltage characteristic value, judge that one-level BMS and one-level reserve BMS directly gather whether tertiary BMS appears unusual.
After power-on, the primary BMS and the primary standby BMS collect the voltage characteristic values of the tertiary BMS simultaneously, namely V1a and V1b, and the primary BMS and the primary standby BMS collect the voltage characteristic values of the tertiary BMS collected by the secondary BMS simultaneously, namely V2a and V2b; meanwhile, the primary BMS collects other information of the secondary BMS and gathers the tertiary BMS. Judging whether the difference value of the voltage characteristic values V1a and V1b of the three-level BMS is larger than a preset value range or not by the aid of the first-level BMS and the first-level standby BMS, if yes, indicating that at least one path of data directly collected by the three-level BMS is abnormal by the aid of the first-level BMS and the first-level standby BMS, and triggering system shutdown; if not, the first-level BMS and the first-level standby BMS are explained to be directly normal to the summarization of the third-level BMS.
(2) When tertiary BMS is normal is directly summarized to one-level BMS, judge whether the data of second grade BMS to tertiary BMS is summarized abnormally.
When the first-level BMS and the first-level standby BMS are directly normal to the collection of the third-level BMS, whether the difference between the third-level BMS characteristic voltage value V1a collected by the first-level BMS and the characteristic voltage value V2a collected by the corresponding second-level BMS is larger than a first preset value V1 is judged. If not, it is stated that the secondary BMS gathers normally, then the primary BMS continues to operate, gathers all data information (including voltage characteristic value and temperature characteristic value) of the secondary BMS, and the primary standby BMS is in a standby state and only gathers characteristic value information of the secondary BMS and the tertiary BMS. Wherein, the millisecond level of the characteristic information communication period can be set to 100mS, and the second level of the rest information output can be set to 1S; the real-time verification of the data is guaranteed, the abnormality is found in time, the risk is controlled, and the potential safety hazard is reduced.
If the difference between the three-level BMS characteristic voltage value V1a summarized by the first-level BMS and the characteristic voltage value V2a summarized by the corresponding second-level BMS is larger than a preset value V1, judging that the second-level BMS summarized by the first-level BMS is abnormal, and sending out alarm information; continuously judging whether the difference between the three-level BMS characteristic voltage value V1a summarized by the first-level BMS and the characteristic voltage value V2a summarized by the corresponding second-level BMS is larger than a second preset value V2 or not; if yes, the system needs to be stopped immediately to check the reason. If not, judging that the second-level aggregation of the first-level standby BMS is abnormal.
(3) When the data collection of the secondary BMS collected by the primary BMS to the tertiary BMS is abnormal, the primary standby BMS is adopted to start entering the system running state.
When the data of the secondary BMS collected by the primary BMS is summarized and abnormal, and the difference between the characteristic voltage value V1a of the tertiary BMS collected by the primary BMS and the characteristic voltage value V2a collected by the corresponding secondary BMS is larger than a first preset value V1 and smaller than a second preset value V2 (namely V1 < |V1a-V2a| < V2), whether the difference between the characteristic voltage value V1a (or V1 b) of the tertiary BMS collected by the primary (or standby) BMS and the characteristic voltage value V2b collected by the standby secondary BMS is larger than the first preset value V1 is judged. If not, the standby secondary BMS is normally summarized, and the primary BMS enters a ready-to-close state; the primary standby BMS starts to enter a system operation state, and all data information (including voltage characteristic values and temperature characteristic values) of the standby secondary BMS are summarized.
If the difference between the characteristic voltage value V1a (or V1 b) of the three-level BMS summarized by the primary (or standby) BMS and the characteristic voltage value V2b summarized by the standby secondary BMS is larger than a preset value V1, judging that the secondary BMS summarized by the primary standby BMS is abnormal, and sending out alarm information; and continuously judging whether the difference between the three-level BMS characteristic voltage value V1a (or V1 b) summarized by the primary (or standby) BMS and the characteristic voltage value V2b summarized by the standby secondary BMS is larger than a second preset value V2, and if so, immediately stopping the system to check the reason.
According to the verification method of the battery management system, a novel three-level BMS architecture is provided, networking is conducted between a first-level BMS and a plurality of second-level BMSs, between the first-level BMS and a plurality of third-level BMSs, between the second-level BMSs and between the second-level BMS and the third-level BMS through a broadband router, data interaction is conducted through a Moubus TCP standard protocol, system transmission distance is increased, and system data throughput and data transmission efficiency are increased. The one-level BMS is directly communicated with the three-level BMS, the characteristic information of the three-level BMS is collected and summarized, the characteristic information of the three-level BMS is compared with the characteristic information of the three-level BMS summarized by the two-level BMS, whether the data of the two-level BMS are summarized and abnormal or not is checked, the effect of real-time data checking is achieved, and the communication reliability is improved. When the data is summarized abnormally, corresponding protection measures are started, so that risks are controlled, and potential safety hazards are reduced. Adopt one-level reserve BMS, when one-level BMS's second grade is summarized and is appeared unusual, start one-level reserve BMS and get into the system operation, guarantee the steady operation of system, reduce the potential safety hazard.
Based on the above method embodiment, the embodiment of the present application further provides a battery management system, as shown in fig. 2, where the battery management system includes a primary BMS, a plurality of secondary BMSs, and a plurality of tertiary BMSs; the primary BMS is respectively connected with the plurality of secondary BMSs and the plurality of tertiary BMSs through the routing switch; each secondary BMS is connected with a plurality of tertiary BMSs through a routing switch; the primary BMS is configured to perform the method as described in the first method embodiment.
In a preferred embodiment of the present application, the battery management system further includes: a primary standby BMS connected with the tertiary BMS and the secondary BMS through a routing switch respectively, and a controller connected with the primary BMS and the primary standby BMS respectively; as shown in fig. 4, wherein the controller is adapted to perform the method as described in the second method embodiment.
In a preferred embodiment of the present application, the routing switch performs data interaction through the Moubus TCP standard protocol.
In the battery management system provided by the embodiment of the application, data are transmitted by networking based on a broadband router between a primary BMS and a plurality of secondary BMSs, between the primary BMS and a plurality of tertiary BMSs, between the secondary BMSs and the tertiary BMSs. The one-level BMS is directly communicated with the three-level BMS, the characteristic information of the three-level BMS is collected and summarized, the characteristic information of the three-level BMS is compared with the characteristic information of the three-level BMS summarized by the two-level BMS, whether the data of the two-level BMS is summarized and abnormal or not is checked, and the protection measures of the system after the abnormal data are generated. When the second-level aggregation of the first-level BMS is abnormal, the first-level standby BMS is started to enter the system for operation.
The system provided by the embodiment of the present application has the same implementation principle and technical effects as those of the foregoing method embodiment, and for the sake of brief description, reference may be made to the corresponding content in the foregoing method embodiment where the portion of the embodiment of the system is not mentioned.
The embodiment of the application also provides a computer readable storage medium, which stores computer executable instructions that, when being called and executed by a processor, cause the processor to implement the above method, and the specific implementation can refer to the foregoing method embodiment and will not be described herein.
The method, the apparatus and the computer program product of the electronic device provided in the embodiments of the present application include a computer readable storage medium storing program codes, where the instructions included in the program codes may be used to execute the method described in the foregoing method embodiment, and specific implementation may refer to the method embodiment and will not be described herein.
The relative steps, numerical expressions and numerical values of the components and steps set forth in these embodiments do not limit the scope of the present application unless it is specifically stated otherwise.
The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a non-volatile computer readable storage medium executable by a processor. Based on this understanding, the technical solution of the present application may be embodied essentially or in a part contributing to the prior art or in a part of the technical solution, in the form of a software product stored in a storage medium, comprising several instructions for causing a computer device (which may be a personal computer, a server, a network device, etc.) to perform all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (RAM, random Access Memory), a magnetic disk, or an optical disk, or other various media capable of storing program codes.
In the description of the present application, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Finally, it should be noted that: the above examples are only specific embodiments of the present application, and are not intended to limit the scope of the present application, but it should be understood by those skilled in the art that the present application is not limited thereto, and that the present application is described in detail with reference to the foregoing examples: any person skilled in the art may modify or easily conceive of the technical solution described in the foregoing embodiments, or perform equivalent substitution of some of the technical features, while remaining within the technical scope of the present disclosure; such modifications, changes or substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present application, and are intended to be included in the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims (10)

1. A method for verifying a battery management system, wherein the method is applied to the battery management system; the battery management system includes: a primary BMS, a plurality of secondary BMSs, and a plurality of tertiary BMSs; the primary BMS is respectively connected with the plurality of secondary BMSs and the plurality of tertiary BMSs through the routing switch; each secondary BMS is connected with a plurality of tertiary BMSs through a routing switch; the method comprises the following steps:
for a plurality of tertiary BMSs connected with each secondary BMS, the primary BMS gathers first characteristic values corresponding to the plurality of tertiary BMSs through a routing switch connected with the tertiary BMS; acquiring second characteristic values corresponding to a plurality of three-level BMSs summarized by the two-level BMS through a routing switch connected with the three-level BMS through the routing switch connected with the two-level BMS; wherein the characteristic value comprises a temperature characteristic value and/or a voltage characteristic value; the temperature characteristic value includes: a highest monomer temperature or a lowest monomer temperature; the voltage characteristic value includes: highest cell voltage or lowest cell voltage;
and judging whether the first difference value of the first characteristic value and the second characteristic value exceeds a first preset threshold value, if so, determining that the secondary BMS is abnormal in operation, and giving an alarm.
2. The method of claim 1, wherein after the step of determining that the secondary BMS is abnormal in operation and alerting, further comprising: judging whether the first difference value exceeds a second preset threshold value, and if so, executing a stopping operation; the second preset threshold is greater than the first preset threshold.
3. The method of claim 2, wherein the battery management system further comprises: a primary standby BMS connected to the plurality of tertiary BMSs, the plurality of secondary BMSs through a routing switch, respectively, and a controller connected to the primary BMSs and the primary standby BMSs, respectively; the method further comprises the steps of:
the controller obtains first characteristic values corresponding to the three-level BMSs summarized by the one-level BMS and third characteristic values corresponding to the three-level BMSs summarized by the one-level standby BMS; judging whether a second difference value between the first characteristic value and the third characteristic value exceeds a third preset threshold value, if so, determining that at least one of the primary BMS and the primary standby BMS is abnormal, and executing shutdown operation; if not, determining that the primary BMS and the primary standby BMS are both operating normally.
4. The method of claim 3, further comprising, after the step of determining that both the primary BMS and the primary backup BMS are normal:
the controller acquires second characteristic values corresponding to the three-level BMSs summarized by the first-level BMS through the second-level BMS; judging whether a first difference value between the first characteristic value and the second characteristic value exceeds the first preset threshold value, if so, determining that a second BMS under the first BMS runs abnormally, and giving an alarm; if not, determining that the secondary BMS under the primary BMS operates normally, the primary BMS continues to operate, and the primary standby BMS is in a standby state.
5. The method of claim 4, wherein the step of determining that a secondary BMS under the primary BMS is abnormal in operation, after alerting, further comprises:
judging whether the first difference value exceeds the second preset threshold value, if so, executing a stopping operation; if not, obtaining fourth characteristic values corresponding to the three-level BMSs summarized by the first-level standby BMS through the second-level BMS; and performing a verification control process based on the first characteristic value and the fourth characteristic value.
6. The method of claim 5, wherein the step of verifying a control procedure based on the first characteristic value and the fourth characteristic value comprises:
judging whether a third difference value between the first characteristic value and the fourth characteristic value exceeds the first preset threshold value, if so, determining that a second-level BMS under the first-level standby BMS runs abnormally, and giving an alarm; and if not, determining that the secondary BMS under the primary standby BMS operates normally, controlling the primary BMS to perform a closing state, and controlling the primary standby BMS to access the system to operate.
7. The method of claim 6, wherein after the step of determining that the secondary BMS under the primary backup BMS is abnormal and alerting, further comprising:
judging whether a third difference value between the first characteristic value and the fourth characteristic value exceeds the second preset threshold value, and if so, executing shutdown operation.
8. A battery management system, wherein the battery management system comprises a primary BMS, a plurality of secondary BMSs, and a plurality of tertiary BMSs; the primary BMS is respectively connected with the plurality of secondary BMSs and the plurality of tertiary BMSs through the routing switch; each secondary BMS is connected with a plurality of tertiary BMSs through a routing switch; the primary BMS is for performing the method of claim 1 or 2.
9. The system of claim 8, wherein the battery management system further comprises: a primary standby BMS connected with the tertiary BMS and the secondary BMS through a routing switch respectively, and a controller connected with the primary BMS and the primary standby BMS respectively; the controller is configured to perform the method of any of claims 3-7.
10. The system of claim 8, wherein the routing switch performs data interactions via a Moubus TCP standard protocol.
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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004150800A (en) * 2002-10-28 2004-05-27 Matsushita Electric Ind Co Ltd Battery management system, battery pack, and its measuring method for charged state
CN109742460A (en) * 2018-12-28 2019-05-10 上汽通用五菱汽车股份有限公司 Management control method, device and the computer readable storage medium of portable battery
CN112152243A (en) * 2020-08-21 2020-12-29 北京双登慧峰聚能科技有限公司 Lithium battery energy storage system and control method

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013012480A1 (en) * 2011-07-21 2013-01-24 Ut-Battelle, Llc Regulation control and energy management scheme for wireless power transfer

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004150800A (en) * 2002-10-28 2004-05-27 Matsushita Electric Ind Co Ltd Battery management system, battery pack, and its measuring method for charged state
CN109742460A (en) * 2018-12-28 2019-05-10 上汽通用五菱汽车股份有限公司 Management control method, device and the computer readable storage medium of portable battery
CN112152243A (en) * 2020-08-21 2020-12-29 北京双登慧峰聚能科技有限公司 Lithium battery energy storage system and control method

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