CN115102251A - Battery management system and method suitable for high-voltage energy storage - Google Patents
Battery management system and method suitable for high-voltage energy storage Download PDFInfo
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- CN115102251A CN115102251A CN202210785064.1A CN202210785064A CN115102251A CN 115102251 A CN115102251 A CN 115102251A CN 202210785064 A CN202210785064 A CN 202210785064A CN 115102251 A CN115102251 A CN 115102251A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/00032—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by data exchange
- H02J7/00036—Charger exchanging data with battery
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
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Abstract
The invention belongs to the technical field of high-voltage energy storage systems, and discloses a battery management system and method suitable for high-voltage energy storage; the system, comprising: a plurality of battery packs; each battery pack comprises a plurality of battery boxes; each battery box comprises a plurality of single batteries which are electrically connected; the battery monitoring units CSC correspond to the battery boxes one by one; the battery monitoring unit CSC is used for monitoring the state information of each battery monomer in the corresponding battery box and calculating to obtain battery state parameters; the plurality of sub-battery system management units SBMU correspond to the plurality of battery packs one by one; the sub-battery system management unit SBMU is used for processing module-level information; the main battery system management unit MBMU is connected with each sub battery system management unit SBMU; for global data processing. The invention sinks data processing and state estimation into a framework, processes data in a distributed manner, and increases the data processing function of the BMS slave control CSC, thereby reducing the data volume of the information to be sent.
Description
Technical Field
The invention belongs to the technical field of high-voltage energy storage systems, and particularly relates to a battery management system and method suitable for high-voltage energy storage.
Background
The energy storage unit is a basic unit for constructing an energy storage power station, and the capacity of the current universal energy storage unit is about 500 kW. The large capacity of the energy storage unit is a necessary condition for improving the efficiency of the energy storage system and reducing the manufacturing cost, the large-scale integration difficulty of the energy storage power station is greatly reduced, the important attention in domestic and foreign industries is received, and the high voltage of the battery system is a necessary path for the large capacity of the energy storage unit.
The high voltage of the battery system refers to that the upper limit working voltage of the battery system is increased to a voltage level higher than 900V, and the functions of effectively improving the energy efficiency of the energy storage unit and reducing the manufacturing cost of the high voltage battery system are verified, so that the high voltage of the battery system is an effective means for realizing cost reduction and efficiency improvement of the energy storage system.
At present, a Battery Management System (BMS) adopts a CAN bus as a basic communication technology bus, and as the capacity and voltage of an energy storage System increase, the data volume of internal communication of the energy storage System correspondingly increases greatly, and an original low-voltage energy storage System communication strategy is continuously adopted, so that the information acquisition is asynchronous, and the communication delay CAN directly influence the comprehensive Management and control strategy of the whole System, thereby influencing the safety of the energy storage System.
In a high-voltage energy storage system, it is important to ensure the transmission rate, real-time performance and accuracy of communication under the premise of no change of effective bandwidth. Therefore, a new communication strategy is needed to meet the requirements of real-time, safety, reliability, high speed and the like of the communication of the high-voltage energy storage system.
Disclosure of Invention
The invention aims to provide a battery management system and a battery management method suitable for high-voltage energy storage, and aims to solve the technical problems of asynchronous information acquisition and communication delay in the communication of the conventional high-voltage energy storage system.
In order to achieve the purpose, the invention adopts the following technical scheme:
in a first aspect, the present invention provides a battery management system suitable for high voltage energy storage, comprising:
a plurality of battery packs; each battery pack comprises a plurality of battery boxes; each battery box comprises a plurality of single batteries which are electrically connected;
the battery monitoring units CSC correspond to the battery boxes one by one; each battery monitoring unit CSC is connected with each single battery in the corresponding battery box; the battery monitoring unit CSC is used for monitoring the state information of each battery monomer in the corresponding battery box and obtaining the battery state parameters of each battery monomer according to the monitored state information; comparing the battery state parameters with preset values, and judging whether the battery state parameters are abnormal or not to obtain a battery state parameter judgment result;
the plurality of sub-battery system management units SBMU correspond to the plurality of battery packs one to one; a sub-battery system management unit SBMU is connected with each battery monitoring unit CSC in the same battery pack; the sub-battery system management unit SBMU is used for collecting the state information of the battery monomer, the battery state parameter and the battery state parameter judgment result uploaded by each battery monitoring unit CSC in the corresponding battery pack, and performing module-level information processing to obtain a module-level information processing result;
the main battery system management unit MBMU is connected with each sub battery system management unit SBMU; and the main battery system management unit MBMU is used for carrying out global data processing according to the module-level information processing result uploaded by each sub-battery system management unit SBMU.
The invention further improves the following steps: the state information of each battery cell includes voltage, current, and temperature.
The invention further improves the following steps: and the battery monitoring unit CSC uploads the state information, the battery state parameters and the battery state parameter judgment results of each battery monomer to the corresponding sub-battery system management unit SBMU through the CAN bus.
The invention further improves the following steps: the battery state parameters comprise one or more of SOC of each battery cell, SOH of each battery cell and consistency of each battery box.
The invention further improves the following steps: the module-level information processing includes first information processing and second information processing;
the first information processing includes: the sub-battery system management unit SBMU compares the state information of the single battery with a preset extreme value and a preset early warning value, judges whether one or more items in the state information of the single battery exceed the preset extreme value and the preset early warning value, and obtains a first information processing result;
the second information processing includes: and the sub-battery system management unit SBMU compresses the battery state parameters and the battery state parameter judgment results uploaded by the corresponding battery monitoring units CSC by adopting a data compression technology to obtain a second information processing result.
The invention further improves the following steps: the sub-battery system management unit SBMU uploads a first information processing result to the main battery system management unit MBMU through a CAN port; and reporting the second information processing result to the main battery system management unit MBMU through another CAN port.
The invention further improves the following steps: the global data processing comprises: performing one or more of communication diagnostics, electrical diagnostics, battery state of health assessment, battery life prediction and equalization, battery safety, and fault diagnostics.
The invention further improves the following steps: the global data processing comprises: one or more of real-time data analysis and prediction, plan strategy issuing, fault analysis, predictability analysis and data display and pushing.
In a second aspect, the present invention provides a battery management method suitable for high voltage energy storage, including:
the battery monitoring unit CSC monitors the state information of each battery monomer in the corresponding battery box; the battery monitoring unit CSC calculates the battery state parameters of each battery monomer according to the monitored state information of each battery monomer to obtain the calculated battery state parameters; the battery monitoring unit CSC compares the battery state parameters with preset values, judges whether the battery state parameters are abnormal or not and obtains a judgment result of the battery state parameters; the battery monitoring unit CSC uploads the state information, the battery state parameters and the battery state parameter judgment results of each battery monomer to the corresponding sub-battery system management unit SBMU through the CAN bus;
the SBMU collects the state information, battery state parameters and battery state parameter judgment results of the battery monomers uploaded by each battery monitoring unit CSC in the corresponding battery pack, and performs module-level information processing to obtain module-level information processing results;
and the main battery system management unit MBMU carries out global data processing according to the module-level information processing result uploaded by each sub battery system management unit SBMU.
The invention further improves the following steps: the module-level information processing includes first information processing and second information processing;
the first information processing includes: the sub-battery system management unit SBMU compares the state information of the single battery with a preset extreme value and a preset early warning value, judges whether one or more items in the state information of the single battery exceed the preset extreme value and the preset early warning value, and obtains a first information processing result;
the second information processing includes: the SBMU compresses the calculated battery state parameters and the battery state parameter judgment results uploaded by the corresponding CSCs by the battery monitoring units by adopting a data compression technology to obtain a second information processing result;
the sub-battery system management unit SBMU uploads a first information processing result to the main battery system management unit MBMU through a CAN port; and reporting the second information processing result to the main battery system management unit MBMU through another CAN port.
In a third aspect, the present invention provides an electronic device comprising a processor and a memory, wherein the processor is configured to execute a computer program stored in the memory to implement the battery management method suitable for high voltage energy storage.
In a fourth aspect, the present invention provides a computer-readable storage medium storing at least one instruction which, when executed by a processor, implements a battery management method suitable for high voltage energy storage.
Compared with the prior art, the invention has the following beneficial effects:
the invention provides a battery management system and a method suitable for high-voltage energy storage, which comprises the following steps: a plurality of battery packs; each battery pack comprises a plurality of battery boxes; each battery box comprises a plurality of single batteries which are electrically connected; the battery monitoring units CSC correspond to the battery boxes one by one; each battery monitoring unit CSC is connected with each single battery in the corresponding battery box; the plurality of sub-battery system management units SBMU correspond to the plurality of battery packs one to one; a sub-battery system management unit SBMU is connected with each battery monitoring unit CSC in the same battery pack; the main battery system management unit MBMU is connected with each sub battery system management unit SBMU; the invention adopts a new distributed battery management architecture; meanwhile, the battery monitoring unit CSC is used for monitoring the state information of each battery monomer in the corresponding battery box and obtaining the battery state parameters of each battery monomer according to the monitored state information; comparing the battery state parameters with preset values, and judging whether the battery state parameters are abnormal to obtain a battery state parameter judgment result; the invention sinks data processing and state estimation into a framework, processes data in a distributed manner, and increases the data processing function of the BMS slave control CSC, thereby reducing the data volume of the information to be sent.
Further, in the invention, the state information of the single battery is compared with a preset extreme value and a preset early warning value by the SBMU, whether one or more items in the state information of the single battery exceed the preset extreme value and the preset early warning value is judged, and a first information processing result is obtained; the sub-battery system management unit SBMU compresses the calculated battery state parameters and the battery state parameter judgment results uploaded by the corresponding battery monitoring units CSC by adopting a data compression technology to obtain a second information processing result; the double-communication period design is adopted, and a first information processing result of the highest/lowest voltage and temperature information is sent in a short period and is used for protection; and second information processing results of other acquired information are sent in a long period, and the data interaction scale is reduced by using a data compression algorithm technology, so that the real-time performance and the accuracy are improved.
In the communication of the high-voltage energy storage system, the corresponding data communication quantity and the calculated quantity are greatly increased. Other data adopt a data compression technology, the communication capacity of the monitoring system CAN be expanded as much as possible under the conditions of no delay and no increase of effective bandwidth, and the high efficiency of data transmission CAN be ensured by the double-CAN port channel design. The communication method combining the distributed architecture, the double-CAN port communication and the data compression technology CAN effectively improve the efficiency, reduce the infrastructure cost of system network transmission and improve the transmission rate of information and the real-time performance of communication.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a diagram of a conventional centralized architecture;
FIG. 2 is a schematic diagram of a prior art distributed architecture;
FIG. 3 is a schematic diagram of a battery management system for high voltage energy storage according to the present invention;
fig. 4 is a block diagram of an electronic device according to the present invention.
Detailed Description
The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings. It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
The following detailed description is exemplary in nature and is intended to provide further details of the invention. Unless otherwise defined, all technical terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the invention.
As shown in fig. 1, the bottom management unit of the traditional centralized architecture is only responsible for collecting and uploading battery information, and the upper management unit completes system state estimation and operation management and control, and is suitable for energy storage systems with low voltage, small scale and centralized placement; referring to fig. 2, the bottom management unit of the conventional distributed architecture is not only responsible for collecting battery information, but also needs to complete the estimation of the state information of the battery module in real time, and upload the state value to the upper management unit, and the upper management unit completes the operation management and control through the overall planning of the state value. The distributed architecture has the characteristics of strong real-time performance, accurate estimation and the like, and is suitable for high-voltage and large-scale energy storage systems.
Example 1
The hardware architecture is the basis of Battery Management System (BMS) performance, and the good hardware architecture can effectively reduce System cost, simplify System design and improve System performance. The high voltage energy storage system lithium ion battery pack is installed by several modules connected in series and parallel. The Battery management system is characterized in that single batteries are connected in series and parallel to form a Battery box, each Battery box is provided with a Battery supervisory unit (CSC), a plurality of CSCs form a sub-Battery system management unit (SBMU), and according to the requirement of energy storage capacity, a proper number of SBMUs form a main Battery system management unit (MBMU), and other required modules such as a local monitoring system, a high-voltage detection and insulation monitoring module and the like are arranged, and the modules jointly form a Battery Management System (BMS).
Referring to fig. 3, the present invention provides a battery management system for high voltage energy storage, which employs a three-level architecture; the method specifically comprises the following steps: m battery packs, m sub-battery system management units SBMU and a main battery system management unit MBMU.
The single batteries are connected in series/parallel to form a battery box, and each battery pack comprises n battery boxes; each battery box is connected with a corresponding battery monitoring unit CSC; all battery monitoring units CSC in one battery pack are connected with corresponding sub-battery system management units SBMU through CAN buses; all the sub-battery system management units SBMU are connected with the same main battery system management unit MBMU through a CAN bus.
Because the BMS architecture needs to be highly matched with the physical architecture of the battery system, the BMS in the application of the high-voltage energy storage system adopts a distributed three-level architecture which is respectively a battery monitoring unit CSC, a sub-battery system management unit SBMU and a main battery system management unit MBMU.
And the battery monitoring unit CSC is used for monitoring the state information of each battery cell in the corresponding battery box, and the state information comprises voltage, current and temperature. The state information of each battery cell monitored by the battery monitoring unit CSC is uploaded to the corresponding sub-battery system management unit SBMU through the CAN bus. The battery monitoring unit CSC is also used for calculating the SOC of each battery cell, the SOH of each battery cell, the consistency of each battery box and other battery state parameters according to the monitored state information of each battery cell to obtain the calculated battery state parameters; the battery state parameters can be compared with preset values, whether the battery state parameters are abnormal or not is judged, and a battery state parameter judgment result is obtained; and uploading the calculated battery state parameters and the judgment results of the battery state parameters to the corresponding SBMU through the CAN bus.
The sub-battery system management unit SBMU is used for collecting the single battery state information, the calculated battery state parameters and the battery state parameter judgment results uploaded by each battery monitoring unit CSC in the corresponding battery pack and processing module-level information; the module-level information processing includes first information processing and second information processing; the first information processing includes: the method comprises the steps that a sub-battery system management unit SBMU compares state information of a single battery with a preset extreme value and a preset early warning value, whether one or more of voltage, current and temperature of the single battery exceeds the preset extreme value and the preset early warning value or not is judged, and a first information processing result is obtained; and the important first information processing result is firstly uploaded to a main battery system management unit (MBMU) layer by layer through a CAN port; the second information processing includes: and the sub-battery system management unit SBMU compresses the calculated battery state parameters and the battery state parameter judgment results uploaded by the corresponding battery monitoring units CSC by adopting a data compression technology to obtain a second information processing result, and reports the second information processing result to the main battery system management unit MBMU through another CAN port.
In one embodiment, the data compression technique uses an LZW compression algorithm, which is known as Lemple-Ziv-Welch.
The main battery system management unit MBMU is the center of the whole battery management system and is responsible for overall decision and control of the battery pack. In a specific embodiment, the main battery system management unit MBMU may perform communication diagnosis, electrical diagnosis, battery health status assessment, battery life prediction and equalization, battery safety and fault diagnosis, and the like according to the obtained first information processing result and the second information processing result, and perform online monitoring such as real-time data analysis and prediction, plan policy issuing, fault analysis, predictive analysis, data display and pushing, and the like.
In a specific embodiment, the SCS is adopted to calculate the battery state parameters of SOC of each battery cell in the corresponding battery box, SOH of each battery cell, consistency of each battery box and the like; from the communication perspective, more battery monitoring unit CSC resources are made to participate in diagnosis, the advantages of battery state parameters such as CSC diagnosis SOC, SOH and consistency can be fully exerted, and the operation pressure of a main battery system management unit MBMU and an on-site monitoring system is reduced. The CSC realizes the diagnosis of the battery state parameters such as SOC, SOH, consistency and the like, can optimize the BMS hierarchy, and reduces the communication pressure and the calculation burden of the SBMU and the MBMU of the sub-battery system management unit.
In a specific embodiment, the CSC is adopted to diagnose the battery state parameters such as the SOC of each battery cell, the SOH of each battery cell, the consistency of each battery box and the like, record and store the characteristic parameters, and is also beneficial to the echelon utilization of the future energy storage battery module. The invention adopts CAN communication, uses 2 CAN ports to participate in the communication simultaneously, and sends the monomer extreme value and the alarm value layer by layer preferentially. Other data adopt a data compression technology, the communication capacity of the monitoring system CAN be expanded as much as possible under the conditions of no delay and no increase of effective bandwidth, and the high efficiency of data transmission CAN be ensured by the double-CAN port channel design. The communication method combining the distributed architecture, the double-CAN port communication and the data compression technology CAN effectively improve the efficiency, reduce the infrastructure cost of system network transmission and improve the transmission rate of information and the real-time performance of communication.
The communication strategy combining the distributed architecture, the double-CAN port communication and the data compression technology effectively solves the problems of data redundancy and complex calculation in a high-voltage and large-scale battery energy storage system, ensures the accuracy and the real-time performance in the communication process, and CAN effectively reduce the infrastructure cost of system network transmission and improve the transmission rate of information and the real-time performance of communication.
Example 2
The invention provides a battery management method suitable for high-voltage energy storage, which comprises the following steps:
the battery monitoring unit CSC monitors state information of each single battery of the series battery in the corresponding battery box, wherein the state information comprises voltage, current and temperature; the battery monitoring unit CSC is used for calculating battery state parameters such as SOC (state of charge), SOH (state of health) of each battery monomer, consistency of each battery box and the like according to the monitored state information of each battery monomer to obtain calculated battery state parameters; comparing the battery state parameters with preset values, and judging whether the battery state parameters are abnormal to obtain a battery state parameter judgment result; the state information of each battery monomer, the calculated battery state parameters and the battery state parameter judgment results monitored by the battery monitoring unit CSC are uploaded to the corresponding sub-battery system management unit SBMU through the CAN bus;
the SBMU collects the state information of the battery monomer, the calculated battery state parameter and the battery state parameter judgment result uploaded by each battery monitoring unit CSC in the corresponding battery pack, and performs module-level information processing; the module-level information processing includes first information processing and second information processing; the first information processing includes: the sub-battery system management unit SBMU compares the state information of the single battery with a preset extreme value and a preset early warning value, judges whether one or more of the voltage, the current and the temperature of the single battery exceed the preset extreme value and the preset early warning value, and obtains a first information processing result; and the important first information processing result is firstly uploaded to a main battery system management unit (MBMU) layer by layer through a CAN port; the second information processing includes: the sub-battery system management unit SBMU compresses the calculated battery state parameters and the battery state parameter judgment results uploaded by the corresponding battery monitoring units CSC by adopting a data compression technology to obtain a second information processing result, and reports the second information processing result to the main battery system management unit MBMU through another CAN port;
and the main battery system management unit MBMU is responsible for decision and control of the whole battery pack.
In a specific embodiment, the master battery system management unit MBMU may perform communication diagnosis, electrical diagnosis, battery health status evaluation, battery life prediction and equalization, battery safety and fault diagnosis, and the like according to the obtained first information processing result and the second information processing result, and perform online monitoring such as real-time data analysis and prediction, plan policy issuing, fault analysis, predictive analysis, data display and pushing, and the like.
Example 3
Referring to fig. 4, the present invention further provides an electronic device 100 suitable for a battery management method for high voltage energy storage; the electronic device 100 comprises a memory 101, at least one processor 102, a computer program 103 stored in the memory 101 and executable on the at least one processor 102, and at least one communication bus 104.
The memory 101 may be used to store the computer program 103, and the processor 102 implements the steps of the battery management method suitable for high-voltage energy storage according to embodiment 2 by running or executing the computer program stored in the memory 101 and calling the data stored in the memory 101. The memory 101 may mainly include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required by at least one function (such as a sound playing function, an image playing function, etc.), and the like; the storage data area may store data (such as audio data) created according to the use of the electronic apparatus 100, and the like. In addition, the memory 101 may include a non-volatile memory, such as a hard disk, a memory, a plug-in hard disk, a Smart Media Card (SMC), a Secure Digital (SD) Card, a Flash memory Card (Flash Card), at least one magnetic disk storage device, a Flash memory device, or other non-volatile solid state storage device.
The at least one Processor 102 may be a Central Processing Unit (CPU), other general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic, discrete hardware components, etc. The processor 102 may be a microprocessor or the processor 102 may be any conventional processor or the like, and the processor 102 is a control center of the electronic device 100 and connects various parts of the whole electronic device 100 by various interfaces and lines.
The memory 101 in the electronic device 100 stores a plurality of instructions to implement a battery management method suitable for high voltage energy storage, and the processor 102 can execute the plurality of instructions to implement:
the battery monitoring unit CSC monitors the state information of each battery monomer in the corresponding battery box; the battery monitoring unit CSC calculates the battery state parameters of each battery monomer according to the monitored state information of each battery monomer to obtain the calculated battery state parameters; the battery monitoring unit CSC compares the battery state parameters with preset values, judges whether the battery state parameters are abnormal or not and obtains a judgment result of the battery state parameters; the battery monitoring unit CSC uploads the state information, the battery state parameters and the battery state parameter judgment results of each battery monomer to the corresponding sub-battery system management unit SBMU through the CAN bus;
the SBMU collects the state information of the battery monomer, the battery state parameter and the battery state parameter judgment result uploaded by each battery monitoring unit CSC in the corresponding battery pack, and performs module-level information processing to obtain a module-level information processing result;
and the main battery system management unit MBMU carries out global data processing according to the module-level information processing result uploaded by each sub battery system management unit SBMU.
Example 4
The modules/units integrated by the electronic device 100 may be stored in a computer-readable storage medium if they are implemented in the form of software functional units and sold or used as separate products. Based on such understanding, all or part of the flow of the method according to the embodiments of the present invention may also be implemented by a computer program, which may be stored in a computer-readable storage medium, and when the computer program is executed by a processor, the steps of the method embodiments described above may be implemented. Wherein the computer program comprises computer program code, which may be in the form of source code, object code, an executable file or some intermediate form, etc. The computer-readable medium may include: any entity or device capable of carrying said computer program code, recording medium, U-disk, removable hard disk, magnetic disk, optical disk, computer Memory, and Read-Only Memory (ROM).
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
Finally, it should be noted that: although the present invention has been described in detail with reference to the above embodiments, it should be understood by those skilled in the art that: modifications and equivalents may be made to the embodiments of the invention without departing from the spirit and scope of the invention, which is to be covered by the claims.
Claims (12)
1. A battery management system adapted for high voltage energy storage, comprising:
a plurality of battery packs; each battery pack comprises a plurality of battery boxes; each battery box comprises a plurality of single batteries which are electrically connected;
the battery monitoring units CSC correspond to the battery boxes one by one; each battery monitoring unit CSC is connected with each single battery in the corresponding battery box; the battery monitoring unit CSC is used for monitoring the state information of each battery monomer in the corresponding battery box and obtaining the battery state parameters of each battery monomer according to the monitored state information; comparing the battery state parameters with preset values, and judging whether the battery state parameters are abnormal or not to obtain a battery state parameter judgment result;
the plurality of sub-battery system management units SBMU correspond to the plurality of battery packs one to one; a sub-battery system management unit SBMU is connected with each battery monitoring unit CSC in the same battery pack; the sub-battery system management unit SBMU is used for collecting the state information of the battery monomer, the battery state parameter and the battery state parameter judgment result uploaded by each battery monitoring unit CSC in the corresponding battery pack, and performing module-level information processing to obtain a module-level information processing result;
the main battery system management unit MBMU is connected with each sub battery system management unit SBMU; and the main battery system management unit MBMU is used for carrying out global data processing according to the module-level information processing result uploaded by each sub-battery system management unit SBMU.
2. The battery management system of claim 1, wherein the state information of each battery cell comprises voltage, current and temperature.
3. The battery management system suitable for high-voltage energy storage according to claim 1, wherein the battery monitoring unit CSC uploads the status information, the battery status parameters and the battery status parameter judgment results of each battery cell to the corresponding sub-battery system management unit SBMU via the CAN bus.
4. The battery management system of claim 1, wherein the battery state parameters comprise one or more of SOC of each battery cell, SOH of each battery cell, and uniformity of each battery box.
5. The battery management system suitable for high voltage energy storage according to claim 1, wherein the module level information processing comprises a first information processing and a second information processing;
the first information processing includes: the sub-battery system management unit SBMU compares the state information of the single battery with a preset extreme value and a preset early warning value, judges whether one or more items in the state information of the single battery exceed the preset extreme value and the preset early warning value, and obtains a first information processing result;
the second information processing includes: and the sub-battery system management unit SBMU compresses the battery state parameters and the battery state parameter judgment results uploaded by the corresponding battery monitoring units CSC by adopting a data compression technology to obtain a second information processing result.
6. The battery management system suitable for high voltage energy storage according to claim 5, wherein the sub-battery system management unit SBMU uploads the first information processing result to the main battery system management unit MBMU via a CAN port; and reporting the second information processing result to the main battery system management unit MBMU through another CAN port.
7. The battery management system suitable for high-voltage energy storage according to claim 1, wherein the global data processing comprises: performing one or more of communication diagnostics, electrical diagnostics, battery state of health assessment, battery life prediction and equalization, battery safety, and fault diagnostics.
8. The battery management system suitable for high-voltage energy storage according to claim 1, wherein the global data processing comprises: one or more of real-time data analysis and prediction, plan strategy issuing, fault analysis, predictability analysis and data display and pushing.
9. A battery management method for high voltage energy storage, comprising:
the battery monitoring unit CSC monitors the state information of each battery monomer in the corresponding battery box; the battery monitoring unit CSC calculates the battery state parameters of each battery monomer according to the monitored state information of each battery monomer to obtain the calculated battery state parameters; the battery monitoring unit CSC compares the battery state parameters with preset values, judges whether the battery state parameters are abnormal or not and obtains a judgment result of the battery state parameters; the battery monitoring unit CSC uploads the state information, the battery state parameters and the battery state parameter judgment results of each battery monomer to the corresponding sub-battery system management unit SBMU through the CAN bus;
the SBMU collects the state information, battery state parameters and battery state parameter judgment results of the battery monomers uploaded by each battery monitoring unit CSC in the corresponding battery pack, and performs module-level information processing to obtain module-level information processing results;
and the main battery system management unit MBMU carries out global data processing according to the module-level information processing result uploaded by each sub battery system management unit SBMU.
10. The battery management method for high voltage energy storage according to claim 9, wherein the module level information processing comprises a first information processing and a second information processing;
the first information processing includes: the sub-battery system management unit SBMU compares the state information of the single battery with a preset extreme value and a preset early warning value, judges whether one or more items in the state information of the single battery exceed the preset extreme value and the preset early warning value, and obtains a first information processing result;
the second information processing includes: the SBMU compresses the calculated battery state parameters and the battery state parameter judgment results uploaded by the corresponding CSCs by the battery monitoring units by adopting a data compression technology to obtain a second information processing result;
the sub-battery system management unit SBMU uploads a first information processing result to the main battery system management unit MBMU through a CAN port; and reporting the second information processing result to the main battery system management unit MBMU through another CAN port.
11. An electronic device, comprising a processor and a memory, wherein the processor is configured to execute a computer program stored in the memory to implement a battery management method suitable for high voltage energy storage according to any one of claims 8 to 9.
12. A computer-readable storage medium, wherein the computer-readable storage medium stores at least one instruction, and the at least one instruction when executed by a processor implements a method for battery management suitable for high voltage energy storage according to any one of claims 8 to 9.
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