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[原创] TI TIDM-TMS570BMS汽车EV(HEV)电池管理系统参考设计

关键词:ARM Cortex-R4 MCU 电动汽车 EV/HEV

时间:2018-01-15 10:36:47       作者:TI       来源:中电网

TI公司的TIDM-TMS570BMS是高性能电动汽车/混合动力汽车(EV/HEV)电池管理系统参考设计,包括LAUNCHXL-TMS57004板和EM1402 EVM板.参考设计采用TMS570LS0x32 16位/32位RISC闪存微控制器(MCU),集成了ARM Cortex-R4 CPU,具有1.66 DMIPS/MHz性能,工作频率可高达80MHz,132 DMIPS,支持BE32格式,同时还集成了384KB/256KB闪存和32KB数据RAM.参考设计TIDM-TMS570BMS主要用在电动汽车和混合动力汽车(EV,HEV,PHEV和轻度混合),能量存储系统(ESS),不间断电源(UPS)和电动自行车和电动摩托车.本文介绍了TMS570LS0x32系列主要特性,框图和高性能EV/HEV电池管理系统参考设计TIDM-TMS570BMS主要特性,框图,电路图和材料清单.

The TMS570LS0432/0332 device is a high-performance automotive-grade microcontroller for safetysystems. The safety architecture includes dual CPUs in lockstep, CPU and Memory BIST logic, ECC onboth the flash and the data SRAM, parity on peripheral memories, and loopback capability on peripheralI/Os.

The TMS570LS0432/0332 device integrates the ARM Cortex-R4 CPU. The CPU offers an efficient1.66 DMIPS/MHz, and has configurations that can run up to 80 MHz, providing up to 132 DMIPS. Thedevice supports the big-endian (BE32) format.

The TMS570LS0432/0332 device has 384KB and 256KB of integrated flash (respectively) and 32KB ofdata RAM. Both the flash and RAM have single-bit error correction and double-bit error detection. Theflash memory on this device is a nonvolatile, electrically erasable, and programmable memoryimplemented with a 64-bit-wide data bus interface. The flash operates on a 3.3-V supply input (the samelevel as I/O supply) for all read, program, and erase operations. When in pipeline mode, the flash operateswith a system clock frequency of 80 MHz. The SRAM supports single-cycle read and write accesses in byte, halfword, word, and double-word modes throughout the supported frequency range.

The TMS570LS0432/0332 device features peripherals for real-time control-based applications, including aNext Generation High-End Timer (N2HET) timing coprocessor with up to 19 I/O terminals and a 12-bitAnalog-to-Digital Converter (ADC) supporting 16 inputs in the 100-pin package.

The N2HET is an advanced intelligent timer that provides sophisticated timing functions for real-timeapplications. The timer is software-controlled, using a small instruction set, with a specialized timermicromachine and an attached I/O port. The N2HET can be used for pulse-width-modulated outputs,capture or compare inputs, or GPIO. The N2HET is especially well suited for applications requiringmultiple sensor information and drive actuators with complex and accurate time pulses. A High-End TimerTransfer Unit (HTU) can perform DMA-type transactions to transfer N2HET data to or from main memory.A Memory Protection Unit (MPU) is built into the HTU.

The Enhanced Quadrature Encoder Pulse (eQEP) module is used for direct interface with a linear orrotary incremental encoder to get position, direction, and speed information from a rotating machine asused in high-performance motion and position-control systems.

The device has a 12-bit-resolution MibADC with 16 channels and 64 words of parity-protected buffer RAM.The MibADC channels can be converted individually or can be grouped by software for sequentialconversion sequences. There are three separate groupings. Each sequence can be converted once whentriggered or configured for continuous conversion mode. The MibADC has a 10-bit mode for use whencompatibility with older devices or faster conversion time is desired.

The device has multiple communication interfaces: one MibSPI, two SPIs, one UART/LIN, and twoDCANs. The SPI provides a convenient method of serial high-speed communications between similarshift-register type devices. The UART/LIN supports the Local Interconnect standard 2.1 and can be usedas a UART in full-duplex mode using the standard Non-Return-to-Zero (NRZ) format. The DCAN supportsthe CAN 2.0 (A and B) protocol standard and uses a serial, multimaster communication protocol thatefficiently supports distributed real-time control with robust communication rates of up to 1 Mbps. TheDCAN is ideal for applications operating in noisy and harsh environments (for example, automotive andindustrial applications) that require reliable serial communication or multiplexed wiring.

The Frequency-Modulated Phase-Locked Loop (FMPLL) clock module is used to multiply the externalfrequency reference to a higher frequency for internal use. The FMPLL provides one of the five possibleclock source inputs to the Global Clock Module (GCM). The GCM manages the mapping between theavailable clock sources and the device clock domains.

The device also has an External Clock Prescaler (ECP) module that when enabled, outputs a continuousexternal clock on the ECLK pin. The ECLK frequency is a user-programmable ratio of the peripheralinterface clock (VCLK) frequency. This low-frequency output can be monitored externally as an indicator ofthe device operating frequency.

The Error Signaling Module (ESM) monitors all device errors and determines whether an interrupt isgenerated or the external nERROR pin is toggled when a fault is detected. The nERROR pin can bemonitored externally as an indicator of a fault condition in the microcontroller.

The I/O Multiplexing and Control Module (IOMM) allows the configuration of the input/output pins tosupport alternate functions.

With integrated safety features and a wide choice of communication and control peripherals, theTMS570LS0432/0332 device is an ideal solution for real-time control applications with safety-criticalrequirements.

TMS570LS0x32主要特性:



TMS570LS0x32应用:


• Braking Systems (ABS and ESC)
• Active Driver Assistance Systems
• Electric Power Steering (EPS)
• Aerospace and Avionics
• Electric Pump Control
• Railway Communications
• Battery-Management Systems
• Off-road Vehicles

图1.TMS570LS0x32功能框图

高性能EV/HEV电池管理系统参考设计TIDM-TMS570BMS

High Performance MCU for an EV/HEV Battery Management System Reference Design This TI Design shows a system example for an activecell-balancing battery management system. TheTMS570LS0432 MCU commands EMB1402 EVM tomonitor the battery cells and perform charge anddischarge from one battery cell to an external 12-Vsupply. The user can view the cell status and controlcellbalancing from a GUI running on the host PC.

This battery-management system (BMS) example illustrates a TMS570LS0432 (an ISO 26262 capable)MCU supporting active cell balancing between one cell in a 16-cell battery module and a 12-V supply.

Self-diagnostic functions are enabled to monitor the status of TMS570LS0432 during run time.TMS570LS0432 configures BQ76PL455A-Q1 to monitor battery cell status through a UART port.

TMS570LS0432 analyzes the cell data and generates a balancing command. The real-time interrupt (RTI)timer is configured to schedule active balancing functions. The balancing command is passed through theserial peripheral interface (SPI) to EMB1428Q and EMB1499Q to enable charge or discharge of the cellselected. The user can view the cell voltage and other status data and control the system operation usinga graphical user interface (GUI) running on the host PC. TMS570LS0432 communicates with the host PC through a UART port emulated by the N2HET module.

The software accompanying this design is developed and tested on a TMS570LS0432 LaunchPad™(LAUNCHXL-TMS57004) and an EM1402 EVM.

参考设计TIDM-TMS570BMS设计特性:

• The Diagnostic Features of TMS570LS0432microcontroller (MCU) Are Enabled to Monitor andReport TMS570LS0432 Status During Run Time.
• The TMS570LS0432 MCU ConfiguresBQ76PL455A-Q1 for Monitoring Cell Voltages andChecking BQ76PL455A-Q1 Status During RunTime.
• The TMS570LS0432 MCU Analyzes the Data FromAll Cells and Generates Active Cell BalancingCommands.
• The TMS570LS0432 MCU Commands EMB1428Qfor Cell Balancing and Monitors EMB1428Q andEMB1499Q Status During Run Time.
• The TMS570LS0432 MCU Communicates WithHost PC Through a Universal AsynchronousReceiver and Transmitter (UART) Emulated by theNext Generation High-End Timer (N2HET) Moduleto Display the Status and Control the BalancingOperation During Run Time.

参考设计TIDM-TMS570BMS特征应用:

• Electric and Hybrid Electric Vehicles (EVs, HEVs,PHEVs, and mild hybrids)
• Energy Storage Systems (ESS)
• Uninterruptible Power Supplies (UPSs)
• E-Bikes and E-Scooters

图2.参考设计TIDM-TMS570BMS外形图

图3.参考设计TIDM-TMS570BMS框图


图4.LAUNCHXL-TMS57004电路图(1)

图5.LAUNCHXL-TMS57004电路图(2)

图6.LAUNCHXL-TMS57004电路图(3)

图7.LAUNCHXL-TMS57004电路图(4)

图8.LAUNCHXL-TMS57004电路图(5)

图9.LAUNCHXL-TMS57004电路图(6)

图10.EM1402 EVM电路图(1)

图11.EM1402 EVM电路图(2)

图12.EM1402 EVM电路图(3)

图13.EM1402 EVM电路图(4)

图14.EM1402 EVM电路图(5)

图15.EM1402 EVM电路图(6)

图16.EM1402 EVM电路图(7)

图17.EM1402 EVM电路图(8)

图18.EM1402 EVM电路图(9)

图19.EM1402 EVM电路图(10)
LAUNCHXL-TMS57004材料清单:


EM1402 EVM材料清单:







详情请见:
http://www.ti.com/product/TMS570LS0432/datasheet/abstract#SPNS1577766
http://www.ti.com/lit/ug/tidubi0/tidubi0.pdf
以及http://www.ti.com/lit/df/tidrky6/tidrky6.pdf
tidrky6.pdf
tidubi0.pdf
tidrky8.zip

 

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