Lithium Battery 3.7V Lithium Polymer Battery 3.2V LifePo4 Battery 1.2V Ni-MH Battery Button Coin Battery
3.7V Battery Pack 7.4V Battery Pack 11.1V Battery Pack 14.8V Battery Pack Other Battery Pack
Sino Science&Technology Battery Co.,ltd is a high-tech production enterprise which specialize in the R&D and production of Lifepo4 batteries,energy storage battery,portable UPS power supply,personalized customization lithium battery pack etc .
Environmental cylindrical 18650 21700 32700 26650 14500 18500 lithium ion rechargeable battery, LifePO4 battery,3.7V lithium polymer battery, NiMH battery , NiCD battery ,Lead acid battery,dry cell battery ,alkaline battery ,heavy duty battery, button cell battery etc. we devote to R&D,innovation ,production & sales
Shenzhen Green Power Energy Battery Co.,ltd specializes in a wide range of digital battery such as environmental cylindrical 18650 21700 32700 26650 14500 18500 lithium ion rechargeable battery, LifePO4 battery, 3.7V lithium polymer battery, NiMH battery, NiCD battery, dry cell battery, alkaline battery, heavy duty battery, button cell battery etc. we devote to R&D, innovation, production & sales. With automatic production machines we have been exported goods to all over the world over 15years. We have complete exported certificate such as KC, CE, UL, BSCI, ROHS, BIS, SGS, PSE etc
Dongguan Datapower New Energy Co.,ltd is a high-tech production enterprise which specialize in the R&D and production&sale of lithium polymer batteries,drone battery,airplane batteries &battery pack etc.
Anhui Seong-hee New Energy Technology Co.,ltd is a high-tech production enterprise which specialize in the R&D and production of primary batteries. And mainly produces and sells alkaline batteries & carbon zinc batteries. there are size AA, AAA, C, D, 9V etc
Guizhou STD Battery Co.,ltd is a high-tech production enterprise which specialize in the R&D and production & sale of lithium polymer batteries, drone battery, airplane batteries & battery pack etc.
release time:2024-03-11 Hits: Popular:AG11 battery
The battery management system (BATTERYMANAGEMENTSYSTEM), commonly known as the battery nanny or battery steward, is an important link between vehicle power batteries and electric vehicles. Its main functions include: real-time monitoring of battery physical parameters; battery status estimation; online diagnosis and warning; charging, discharging and Precharge control; equalization management and thermal management, etc. The main purpose of the battery management system (BMS) is to improve battery utilization, prevent battery overcharge and overdischarge, extend battery life, and monitor battery status.
The battery management system is not only closely related to the battery, but also has various connections with the vehicle system. Among all faults, compared with other systems, the battery management system faults are relatively high and difficult to deal with. This article summarizes some common methods for dealing with battery management system failures and case studies of common battery management system failures, for reference by relevant personnel of vehicle, battery, and management system manufacturers.
BMS fault analysis method
Observation
When communication interruption or control abnormality occurs in the system, observe whether there are alarms in each module of the system and whether there are alarm icons on the display screen, and then investigate the resulting phenomena one by one.
Fault Reproduction Method
Vehicle faults occur under different conditions. If conditions permit, the fault should be reproduced under the same conditions as much as possible to confirm the problem point. Elimination method: When similar interference occurs in the system, each component in the system should be removed one by one to determine which part is causing the impact on the system.
substitution method
When a module has temperature, voltage, control, etc. abnormalities, swap the positions of modules with the same number of strings to diagnose whether it is a module problem or a wiring harness problem.
Environmental Inspection Act
When a system failure occurs, such as the system cannot be displayed, we should not rush to consider it in depth because we often overlook some details. First we should look at the obvious things: Is the power plugged in? Is the switch turned on? Are all the wiring connected? Maybe that's where the problem lies.
program upgrade method
When an unknown fault occurs after a new program is burned, causing system control abnormalities, the previous version of the program can be burned for comparison to analyze and handle the fault.
data analysis
When a control or related failure occurs in the BMS, the data stored in the BMS can be analyzed, and the content of the messages in the CAN bus can be analyzed.
Analysis of common fault cases
1. The entire system does not work after the system is powered on.
Possible Causes
Abnormal power supply, short circuit or open circuit in the wiring harness, and DCDC no voltage output.
troubleshooting
Check whether the external power supply to the management system is normal and whether it can reach the minimum operating voltage required by the management system. Check whether the external power supply has a current-limiting setting, resulting in insufficient power supply to the management system. You can adjust the external power supply to meet the requirements of the management system. Electrical requirements; check whether there is a short circuit or open circuit in the wiring harness of the management system, and modify the wiring harness to make it work normally; if the external power supply and wiring harness are normal, check whether the DCDC in the management system that supplies power to the entire system has a voltage output; if so If abnormal, the bad DCDC module can be replaced.
2. BMS cannot communicate with ECU
Possible Causes
The BMU (main control module) is not working and the CAN signal line is disconnected.
troubleshooting
Check whether the BMU power supply 12V/24V is normal; check whether the CAN signal transmission line has pins out or the plug is not inserted; monitor the CAN port data to see whether BMS or ECU data packets can be received.
Read recommendations:
How to detect the battery capacity of lithium batteries.home solar energy storage lithium battery co
Last article:AG10 battery.Research and analysis on the behavior of electrolyte during charging and discharging of
Next article:AG3 battery.Analysis of wireless charging technology for electric vehicles, don’t worry about short
Popular recommendation
801538 battery sales
2023-03-22702535 battery wholesaler
2023-03-2218650 battery 2600mah
2023-03-2214500 battery sales
2023-03-22402035 lipo battery Factory
2023-03-22Coin Cell BR 1225
2022-10-1526650 5000MAH 3.7V
2022-10-15402030 180mAh 3.7V
2022-08-19Colorful T style strap
2022-09-22No.7 card-mounted carbon battery R03P
2023-06-28LR14
2022-08-1918650 2400mAh 3.7V
2022-06-20R03P
2023-02-18Lithium-ion battery GN200 60000mAh
2022-08-19Lithium Battery GN6020
2022-08-19602030 polymer battery
2023-06-25no 5 alkaline battery
2023-06-251.5v dry cell battery
2023-06-25Nickel Hydride Batteries
2023-06-2532700 battery
2023-06-25Polymer Lithium Battery
2024-10-23Lithium battery steel shell/aluminum shell/cylinder/flexible packaging series
2022-12-14Low temperature military lithium battery
2024-08-05What is the difference between ordinary batteries and lithium batteries?
2022-11-08Power Output of Lithium-Ion Batteries for Power Applications
2024-10-29Lithium manganate (LiMn2O4)
2022-11-21Current status of lithium iron batteries.LR621 battery
2023-05-25Why do new energy vehicles favor nickel -metal hydride batteries?portable energy storage battery pow
2023-04-15Polymer battery safety issue.1.5V rechargeable battery
2023-05-20What are the maintenance notes for lithium -ion battery for a long time?36v 7.5ah lithium ion batter
2023-03-11