GB/T 34131-2023 PDF English (GB/T 34131-2017: Older version)

GB/T34131-2023 (GBT34131-2023): PDF in English

GB/T 34131-2023 GB NATIONAL STANDARD OF THE PEOPLE’S REPUBLIC OF CHINA ICS 27.180 CCS F 19 Replacing GB/T 34131-2017 Battery management system for electrical energy storage ISSUED ON: MARCH 17, 2023 IMPLEMENTED ON: OCTOBER 01, 2023 Issued by: State Administration for Market Regulation; Standardization Administration of the People's Republic of China. Table of Contents Foreword ... 3 1 Scope ... 6 2 Normative references ... 6 3 Terms and definitions ... 7 4 Classification and coding ... 7 5 Normal working environment ... 9 6 Technical requirements ... 9 7 Test methods ... 17 8 inspection rules ... 37 9 Marks, packaging, transportation and storage ... 40 Annex A (informative) Alarm information of battery management system ... 42 Annex B (normative) Requirements for battery simulation device ... 46 Annex C (informative) Parameter information of battery management system ... 48 Annex D (informative) Battery charging and discharging curve ... 60 Battery management system for electrical energy storage 1 Scope This document specifies the requirements for data acquisition, communication, alarm and protection, control, energy state estimation, balance, insulation resistance detection, insulation withstand voltage, electrical adaptability, and electromagnetic compatibility of the battery management system for electric energy storage (referred to as "battery management system"). It describes corresponding test methods. It stipulates classification and coding, normal working environment, inspection rules, marks, packaging, transportation and storage, etc. This document is applicable to the design, manufacture, test, inspection, operation, maintenance and overhaul of battery management systems for lithium-ion batteries, sodium-ion batteries, lead-acid (carbon) batteries, flow batteries, and water electrolysis/fuel cells for power storage. Other types of battery management systems shall refer to this document for implementation. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. GB/T 191, Packaging and storage marks GB/T 2423.1, Environmental testing for electric and electronic products - Part 2: Test methods - Tests A: Cold GB/T 2423.2, Environmental testing for electric and electronic products - Part 2: Test methods - Tests B: Dry heat GB/T 2423.4, Environmental testing for electric and electronic products - Part 2: Test method - Test Db: Damp heat, cyclic (12 h + 12 h cycle) GB/T 2423.17, Environmental testing for electric and electronic products - Part 2: Test method - Test Ka: Salt mist GB/T 4798.2, Classification of environmental conditions - Classification of groups of environmental parameters and their severities - Part 2: Transportation and handling GB/T 7251.1, Low-voltage switchgear and control gear assemblies - Part 1: General Example 2: For electric energy storage, the battery type is lithium-ion battery, the management level is battery cluster, the maximum acquisition voltage is 1500 V, the balance method is passive balance, the number of voltage acquisition channels is 1, the number of temperature acquisition channels is 0, and the product model is A002, then the code shall be EES-LIB-C-1500V-PB-001-000-A002. Example 3: For electric energy storage, the battery type is a flow battery, the management level is a stack, the maximum acquisition voltage is 900 V, the balance method is no balance, the number of voltage acquisition channels is 1, the number of temperature acquisition channels is 1, the product model is B002, then the code shall be EES-FLB-S-0900V-NB-001-001-B002. Figure 1 -- Classification and coding of battery management systems 5 Normal working environment The battery management system shall work normally in the following environments: a) Temperature: -20°C~65°C; b) Relative humidity: 5%~95%, without condensation; c) Altitude: not greater than 2000 m. When it is greater than 2000 m, it shall meet the relevant provisions of GB/T 7251.1; d) For battery management systems used in marine climates, salt spray resistance requirements shall be met. 6 Technical requirements 6.1 General requirements 6.1.1 The battery management system shall have the functions of data acquisition, communication, alarm and protection, control, state estimation, parameter setting, data storage, calculation and statistics, etc. It shall have a display function. Lithium-ion batteries, sodium-ion batteries, and lead-acid (carbon) battery management systems shall also have balance and insulation resistance detection functions. 6.1.2 The battery management system shall have versatility, compatibility, maintainability and scalability. It shall be used when it is plugged. 6.1.3 The functions of the battery management system shall be logically independent of each other. The control strategy and execution cycle match each other. communication interface, and support Modbus, DL/T 634.5104, DL/T 860 (all parts) communication protocols. Dual-network redundant communication shall be adopted. 6.3.3 The battery management system and the energy storage converter can use controller area network (CAN), RS-485, Ethernet and other communication interfaces, support CAN2.0B, Modbus, DL/T860 (all parts) communication protocols, and have one output hard contact interface. 6.3.4 Communication interfaces such as CAN, RS-485, and Ethernet can be used between battery management systems at different management levels. Communication protocols such as CAN2.0B and Modbus can be supported. 6.3.5 Communication interfaces such as RS-485 and Ethernet can be used for the battery management system, fire protection system, heating ventilation and air conditioning system. Support the Modbus communication protocol. 6.4 Alarm and protection 6.4.1 Alarm classification and processing 6.4.1.1 The alarm information of the battery management system shall be divided into level one, level two and level three according to the severity. In which: - The level one alarm information is the alarm information that requires immediate shutdown or power outage processing. - The level two alarm information is the alarm information that needs to take emergency measures immediately. - The level three alarm information is the alarm information that needs to be strengthened to monitor and the level one and level two alarms to reset. 6.4.1.2 The battery management system shall issue an alarm message and upload when the equipment state is abnormal or faulty. See Annex A for alarm information. 6.4.1.3 When the level one and level two alarms occur, the battery management system shall record the analog and state quantities for 10 s before and after the alarm information. 6.4.2 Alarm content 6.4.2.1 The alarm content of lithium-ion battery, sodium-ion battery and lead-acid (carbon) battery management system shall include voltage over limit, voltage extreme difference over limit, cluster current over limit, temperature over limit, battery cell temperature extreme difference within the cluster over limit, insulation resistance over limit, voltage acquisition line abnormality, temperature acquisition line abnormality, battery cluster charge and discharge circuit exception, communication exception, etc. For lithium-ion batteries, sodium-ion batteries and lead-acid (carbon) battery management systems with more than two battery clusters connected in parallel at the DC end, there shall also be an alarm for exceeding the limit of the circulation between battery clusters. 6.4.2.2 The alarm content of the liquid flow battery management system shall include: voltage over limit, voltage extreme difference over limit, current over limit, temperature over limit, flow over limit, pressure over limit, liquid level over limit, liquid leakage fault, communication exception etc. 6.4.2.3 The alarm content of the water electrolysis hydrogen production/fuel cell management system shall include voltage over limit, current over limit, temperature over limit, flow over limit, liquid level over limit, pressure over limit, oxygen concentration over limit in hydrogen, hydrogen concentration over limit in oxygen, ambient hydrogen concentration over limit, communication abnormality, etc. 6.4.3 Protection 6.4.3.1 The battery management system shall issue a shutdown command within 300 ms after the level one alarm is issued. Disconnect the charging-discharging circuit of the battery cluster or battery array within 5 s. 6.4.3.2 The battery management system shall issue a command to reduce the operating power of the battery within 300 ms after the level two alarm is issued. 6.5 Control 6.5.1 The lithium-ion battery, sodium-ion battery and lead-acid (carbon) battery management system shall control the input and exit of battery clusters and battery arrays. 6.5.2 The battery management system shall have the ability to adjust the battery temperature through the cooling or heating system. 6.5.3 The liquid flow battery management system shall control the pump speed of the electrolyte circulation pump and the on-off of the valve. 6.6 Energy state estimation 6.6.1 The battery management system shall estimate the battery state of energy (SOE) in real time. 6.6.2 The maximum allowable error of the energy state estimation of the battery management system shall be ±5%. 6.7 Balance Lithium-ion batteries, sodium-ion batteries and lead-acid (carbon) battery management systems shall have a balancing function. One or both of the active and passive balance methods can be used as the balance method. includes at least 9600 bps, 19200 bps, 115200 bps gear selection; e) With network port baud rate selection configuration function. The baud rate includes at least 100M bps and 1.......
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