AMS Infineon Power Lithium Ion Battery Management System Treatment Method

2022/04/02

  Author :Iflowpower – Portable Power Station Supplier

As the core of electric vehicles - the safety of the power lithium-ion battery has always been the difficulties and focus of electric vehicles. Who masters the powerful lithium-ion battery management technology, whoever masters the future electric car market. This paper analyzes the PTE Group with infineon high-performance 16-bit MCUXC164 as a platform, supplemented with AMS high-precision, zero-temperature powered lithium-ion battery current test core AS8510 power lithium ion battery management system (BMS) treatment method.

I. Power Lithium Ion Battery BMS (Battery Management System) Second, the battery management system is tightly three functions: 1. Real-time monitoring battery status.

By testing the external characteristic parameters of the battery (such as voltage, current, temperature, etc.) use appropriate algorithms (such as capacity and SOC, etc.) estimation and monitoring, which is the basis and key of the efficient operation of the battery management system; 2.

After properly acquiring the state of the battery, the battery is balanced management, charge and discharge management, fault alarm, etc .;. Third, the physical picture - INFINMCUXC164 Master Module 4, XC164 Function Introduction 1.

High Performance 16-Bitcpu Pipeline and 5-Stage-25NS at 40MHzcpu Directive Clock (Single Period Period Periodic) Period Time - 1-Cycle Multiplication (16 × 16) ), Background portion (32/16) 21-cycle -1-cyclemultiply-ancumulate (MAC) Description -16 megabytes Total number of linear address space -1024 byte sheets within the linear address of the code and data (C166 series compatibility) 2.16-Priority-Level interrupt system with up to 63 sources, sampling rates to 50ns3.8-channel interrupt drive single-cycle data transmission facility passed 4.

Peripheral event controllers (PEC), 24-bit Pointer 5. Clock Generator By PLL, or by PLL 6. Sliced ​​Data SRAM (DSRAM, XC164GM) SRAM (DSRAM, XC164GM) SRAM (DSRAM, XC164GM -8F only) -2KB on-chip program / data SRAM (PSRAM) -64 byte (XC164GM-8F) or 32 bytes (XC164GM-4F) Plan 7.

Memory (flash) 8. On-chip Peripheral Module -14-Channel A / D converter and programmable analysis (10-bit or 8-bit) and conversion time (down to 2.55μsor2.

15μs) -16-channel universal capture / comparison unit (CAPCOM2) - Multi-function general press unit 5 Machine - Two Synchronous / Asynchronous (USART Interface) Serial Channel - Two High-Speed-Synchronous Serial Channels - Table Twincan Interface (Revised 2.0B Activity) Messages and 32 (Complete CAN / Basic) For two CAN nodes and gateway functions - on-board real-time clock, driven by the main oscillator 9. Idle, sleep, and power-down mode and flexible power management 10.

Programmable watchdog on the oscillator and watchdog five, AS8510 Features 1. Internal 2-way 16-bit ADC conversion, and programmable sampling rate, sampling rate up to 100K / s. 2.

Zerooffset 3.130dB Dynamic range, 4 gain adjustment, 5, 25, 40And100 times 4 change gain settings, improve accuracy 4. Fully adherence AECQ100 automobile integrated circuit stress detection certification standard, each IC has the only ID.

5. Separate current and voltage co-frequency test channel; 6. Internal high-precision reference voltage source, 20mV, high precision reference voltage source +/- 20 ppm; 7.

Integrate a RC oscillator, 2% accuracy; 8. Voltage Test Channel Can be used for temperature test channels; 9.30uastandbymodecRrent.

Stope current; 10.ssop20Packager.11.

AMS battery high-side (positive) buck ICAS8525 function - high precision voltage attenuation; - Exquisite difference gain amplification, effectively reduce common mode interference; The power reboot function can be adjusted over temperature and restart. Linpin test, up to -27V; - over temperature alarm shutdownfunctions. 12.

Active balance management ICAS8505 features: -as8505Cellbalancer / Monitor battery Active balance, accuracy of 20mV in full temperature range; - synchronized, accurate battery voltage comparison; - Active equilibrium, up to 14 battery cells; The products are mostly passive measurements, and the battery unit is involved, and it cannot quickly and accurately track the power of each battery unit.

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