New energy vehicles have poor endurance? Then try this BMS solution
Tesla is going to build a factory in China? Tesla has had rumors with many automakers, including SAIC, Changan Automobile, Beiqi Foton, and JAC, but they have been proven to be false. Regardless of whether Tesla will eventually build a factory in China, we can see that the new energy vehicle industry is developing rapidly in China, and the market potential is huge! However, due to factors such as battery life, it is difficult for China's new energy vehicle industry to develop and popularize.
Driven by the rapid growth of demand in the new energy vehicle market, the market size of battery management system has also expanded synchronously. BMS is the core competitiveness of new energy vehicles. Compared with traditional consumer lithium batteries, the power batteries used in new energy vehicles have significantly higher requirements for structural complexity, number of cells carried, and overall safety performance, which makes the importance of BMS more prominent and is one of the core competitiveness of new energy vehicles.
Respond to the call of the times! Now, China Electric Port recommends a car-grade battery management solution based on Intersil-ISL94212
About Intersil-ISL94212
• Single chip can detect 12CELLS batteries, supporting Li-ion CoO2, Li-ion Mn2O4, and Li-ion FePO4 battery chemistries
•Battery cell voltage measurement accuracy is ±5mV
• 19.5μs battery voltage scan rate (234μs scan 12CELLS battery)
• Up to four external temperature inputs
•Powerful daisy chain communication system
• Supports troubleshooting of all key internal functions
• Integrated watchdog, intelligently shuts down the device if communication is interrupted
• 7μA shutdown current
• 2Mbps high-speed SPI
•TQFP-64 package transfer
Recommended Solution
The power and energy storage lithium-ion battery management system (BMS) uses NXP's MCU as the main control, communicates with Intersil's lithium battery management dedicated chip ISL94208/ISL94212, monitors the single cell voltage, battery pack temperature, charge and discharge current, and intelligently balances the management to protect the lithium battery pack and extend its service life. At the same time, it records the power SOC and abnormal operating status. The system adopts a modular design and can manage 6-168 cells battery packs in a cascade manner.
◀Solution advantages:
•High sampling accuracy and low power consumption. Comprehensive functional testing
• Daisy chain expansion design, low cost
• Modular design, easy maintenance
•Multi-level fault diagnosis protection, dual fault detection
• Hardware lock failure protection, higher security
•PC software to support production testing
•Storage environment temperature: -40℃~80℃
• Adapt to long-term stable and reliable operation in the ambient temperature range of -30 ℃ ~ 65 ℃
•Support cascade modules, use cascade to manage 6~168 cells of various types of lithium battery packs
• Excellent hot-swap performance
•Integrated multiple communication modes: SMBUS, CAN, RS232, RS485, GPRS, etc.
Solution Block Diagram
Key Components
MCU : NXP-
MC9S08DZ32AMLC (Industrial Grade)
AFE : Intersil-
Op amp :3PEAK/Intersil-
MOS driver : Intersil-
RS-485 :MAXIM/Intersil-
RS-232 :MAXIM/Intersil-
LDO :MAXIM/Intersil-
Voltage reference :Intersil/Diodes-
MOS: AOS-
Optocoupler : LITEON-
LED : LITEON-
EEPROM : ATMEL-
DC-DC: MAXIM-
For more exciting content about the plan, please click: http://firefly.cecport.com/show/s/552.shtml . Warm reminder: if you are interested in the plan, here is a hot customer service phone number to satisfy your strong desire for knowledge: 400-626-1616. Come on, vent your desire!
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