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https://github.com/dalathegreat/Battery-Emulator.git
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Merge pull request #33 from dalathegreat/i-miev-support
Add initial imiev support
This commit is contained in:
Daniel Öster
GitHub
commit
f4349e4ae6
4 changed files with 215 additions and 3 deletions
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@ -13,6 +13,10 @@
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#include "RENAULT-ZOE-BATTERY.h" //See this file for more Zoe battery settings
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#endif
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#ifdef IMIEV_ION_CZERO_BATTERY
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#include "IMIEV-CZERO-ION-BATTERY.h" //See this file for more triplet battery settings
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#endif
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#ifdef CHADEMO
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#include "CHADEMO-BATTERY.h" //See this file for more Chademo settings
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#endif
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154
Software/IMIEV-CZERO-ION-BATTERY.cpp
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154
Software/IMIEV-CZERO-ION-BATTERY.cpp
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@ -0,0 +1,154 @@
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#include "IMIEV-CZERO-ION-BATTERY.h"
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#include "ESP32CAN.h"
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#include "CAN_config.h"
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//Code still very WIP
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//TODO: Add CMU warning incase we detect a direct connection to the CMUs. It wont be safe to use the battery in this mode
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//Map the missing values
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//Check scaling of all values
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//Generate messages towards BMU to keep it happy?
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/* Do not change code below unless you are sure what you are doing */
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#define BMU_MAX_SOC 1000 //BMS never goes over this value. We use this info to rescale SOC% sent to inverter
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#define BMU_MIN_SOC 0 //BMS never goes below this value. We use this info to rescale SOC% sent to inverter
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static uint8_t CANstillAlive = 12; //counter for checking if CAN is still alive
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static uint8_t errorCode = 0; //stores if we have an error code active from battery control logic
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static uint8_t BMU_Detected = 0;
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static uint8_t CMU_Detected = 0;
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static unsigned long previousMillis10 = 0; // will store last time a 10ms CAN Message was sent
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static unsigned long previousMillis100 = 0; // will store last time a 100ms CAN Message was sent
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static const int interval10 = 10; // interval (ms) at which send CAN Messages
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static const int interval100 = 100; // interval (ms) at which send CAN Messages
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static int pid_index = 0;
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static int cmu_id = 0;
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static int voltage_index = 0;
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static int temp_index = 0;
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static int BMU_SOC = 0;
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static double temp1 = 0;
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static double temp2 = 0;
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static double temp3 = 0;
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static double voltage1 = 0;
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static double voltage2 = 0;
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static double BMU_Current = 0;
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static double BMU_PackVoltage = 0;
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static double BMU_Power = 0;
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static uint16_t cell_voltages[89]; //array with all the cellvoltages //Todo, what is max array size? 80/88 cells?
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static uint16_t cell_temperatures[89]; //array with all the celltemperatures //Todo, what is max array size? 80/88cells?
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void update_values_imiev_battery()
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{ //This function maps all the values fetched via CAN to the correct parameters used for modbus
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bms_status = ACTIVE; //Startout in active mode
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SOC = BMU_SOC; //Todo, scaling?
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battery_voltage = (BMU_PackVoltage*10); //Todo, scaling?
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battery_current = (BMU_Current*10); //Todo, scaling?
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capacity_Wh = BATTERY_WH_MAX; //Hardcoded to header value
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remaining_capacity_Wh = (SOC/100)*capacity_Wh;
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max_target_charge_power; //TODO, map
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max_target_discharge_power; //TODO, map
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stat_batt_power = BMU_Power; //TODO, Scaling?
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temperature_min; //TODO, map
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temperature_max; //TODO, map
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/* Check if the BMS is still sending CAN messages. If we go 60s without messages we raise an error*/
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if(!CANstillAlive)
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{
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bms_status = FAULT;
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Serial.println("No CAN communication detected for 60s. Shutting down battery control.");
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}
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else
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{
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CANstillAlive--;
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}
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if(printValues)
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{ //values heading towards the modbus registers
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Serial.print("BMU SOC: ");
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Serial.println(BMU_SOC);
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Serial.print("BMU Current: ");
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Serial.println(BMU_Current);
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Serial.print("BMU Battery Voltage: ");
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Serial.println(BMU_PackVoltage);
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}
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}
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void receive_can_imiev_battery(CAN_frame_t rx_frame)
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{
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switch (rx_frame.MsgID)
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{
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CANstillAlive = 12; //Todo, move this inside a known message ID to prevent CAN inverter from keeping battery alive detection going
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case 0x374: //BMU message, 10ms - SOC
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BMU_SOC = ((rx_frame.data.u8[1] - 10) / 2);
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break;
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case 0x373: //BMU message, 100ms - Pack Voltage and current
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BMU_Current = ((((((rx_frame.data.u8[2] * 256.0) + rx_frame.data.u8[3])) - 32768)) * 0.01);
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BMU_PackVoltage = ((rx_frame.data.u8[4] * 256.0 + rx_frame.data.u8[5]) * 0.1);
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BMU_Power = (BMU_Current * BMU_PackVoltage);
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break;
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case 0x6e1: //BMU message, 25ms - Battery temperatures and voltages
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case 0x6e2:
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case 0x6e3:
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case 0x6e4:
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BMU_Detected = 1;
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//Pid index 0-3
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pid_index = (rx_frame.MsgID) - 1761;
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//cmu index 1-12: ignore high order nibble which appears to sometimes contain other status bits
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cmu_id = (rx_frame.data.u8[0] & 0x0f);
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//
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temp1 = rx_frame.data.u8[1] - 50.0;
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temp2 = rx_frame.data.u8[2] - 50.0;
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temp3 = rx_frame.data.u8[3] - 50.0;
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voltage1 = (((rx_frame.data.u8[4] * 256.0 + rx_frame.data.u8[5]) * 0.005) + 2.1);
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voltage2 = (((rx_frame.data.u8[6] * 256.0 + rx_frame.data.u8[7]) * 0.005) + 2.1);
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voltage_index = ((cmu_id - 1) * 8 + (2 * pid_index));
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temp_index = ((cmu_id - 1) * 6 + (2 * pid_index));
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if (cmu_id >= 7)
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{
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voltage_index -= 4;
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temp_index -= 3;
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}
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cell_voltages[voltage_index] = voltage1;
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cell_voltages[voltage_index + 1] = voltage2;
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if (pid_index == 0)
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{
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cell_temperatures[temp_index] = temp2;
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cell_temperatures[temp_index + 1] = temp3;
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}
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else
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{
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cell_temperatures[temp_index] = temp1;
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if (cmu_id != 6 && cmu_id != 12)
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{
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cell_temperatures[temp_index + 1] = temp2;
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}
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}
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break;
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default:
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break;
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}
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}
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void send_can_imiev_battery()
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{
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unsigned long currentMillis = millis();
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// Send 100ms CAN Message
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if (currentMillis - previousMillis100 >= interval100)
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{
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previousMillis100 = currentMillis;
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}
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}
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40
Software/IMIEV-CZERO-ION-BATTERY.h
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40
Software/IMIEV-CZERO-ION-BATTERY.h
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#ifndef IMIEV_CZERO_ION_BATTERY_H
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#define IMIEV_CZERO_ION_BATTERY_H
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#include <Arduino.h>
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#include "ESP32CAN.h"
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#define BATTERY_WH_MAX 22000 //Battery size in Wh (Maximum value Fronius accepts is 60000 [60kWh] you can use larger batteries but do set value over 60000
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#define ABSOLUTE_MAX_VOLTAGE 4040 // 404.4V,if battery voltage goes over this, charging is not possible (goes into forced discharge)
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#define ABSOLUTE_MIN_VOLTAGE 3100 // 310.0V if battery voltage goes under this, discharging further is disabled
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#define MAXPERCENTAGE_ZOE 800 //80.0% , Max percentage the battery will charge to (App will show 100% once this value is reached)
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#define MINPERCENTAGE_ZOE 200 //20.0% , Min percentage the battery will discharge to (App will show 0% once this value is reached)
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static byte printValues = 1; //Should modbus values be printed to serial output?
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// These parameters need to be mapped for the Gen24
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extern uint16_t SOC;
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extern uint16_t StateOfHealth;
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extern uint16_t battery_voltage;
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extern uint16_t battery_current;
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extern uint16_t capacity_Wh;
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extern uint16_t remaining_capacity_Wh;
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extern uint16_t max_target_discharge_power;
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extern uint16_t max_target_charge_power;
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extern uint16_t bms_status;
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extern uint16_t bms_char_dis_status;
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extern uint16_t stat_batt_power;
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extern uint16_t temperature_min;
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extern uint16_t temperature_max;
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extern uint16_t CANerror;
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// Definitions for BMS status
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#define STANDBY 0
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#define INACTIVE 1
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#define DARKSTART 2
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#define ACTIVE 3
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#define FAULT 4
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#define UPDATING 5
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void update_values_imiev_battery();
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void receive_can_imiev_battery(CAN_frame_t rx_frame);
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void send_can_imiev_battery();
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#endif
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@ -2,6 +2,7 @@
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#define BATTERY_TYPE_LEAF // See NISSAN-LEAF-BATTERY.h for more LEAF battery settings
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//#define TESLA_MODEL_3_BATTERY // See TESLA-MODEL-3-BATTERY.h for more Tesla battery settings
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//#define RENAULT_ZOE_BATTERY // See RENAULT-ZOE-BATTERY.h for more Zoe battery settings
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//#define IMIEV_ION_CZERO_BATTERY // See IMIEV-CZERO-ION-BATTERY.h for more triplet battery settings
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//#define CHADEMO // See CHADEMO.h for more Chademo related settings
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/* Select inverter communication protocol. See Wiki for which to use with your inverter: https://github.com/dalathegreat/BYD-Battery-Emulator-For-Gen24/wiki */
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@ -167,7 +168,10 @@ void setup()
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Serial.println("Tesla Model 3 battery selected");
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#endif
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#ifdef RENAULT_ZOE_BATTERY
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Serial.println("Renault Zoe battery selected");
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Serial.println("Renault Zoe / Kangoo battery selected");
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#endif
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#ifdef IMIEV_ION_CZERO_BATTERY
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Serial.println("Mitsubishi i-MiEV / Citroen C-Zero / Peugeot Ion battery selected");
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#endif
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}
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@ -208,12 +212,16 @@ void handle_can()
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#ifdef RENAULT_ZOE_BATTERY
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receive_can_zoe_battery(rx_frame);
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#endif
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#ifdef IMIEV_ION_CZERO_BATTERY
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receive_can_imiev_battery(rx_frame);
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#endif
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#ifdef CAN_BYD
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receive_can_byd(rx_frame);
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#endif
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#ifdef CHADEMO
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receive_can_chademo(rx_frame);
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#endif
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}
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else
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{
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@ -244,6 +252,9 @@ void handle_can()
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#ifdef RENAULT_ZOE_BATTERY
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send_can_zoe_battery();
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#endif
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#ifdef IMIEV_ION_CZERO_BATTERY
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send_can_imiev_battery();
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#endif
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#ifdef CHADEMO
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send_can_chademo_battery();
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#endif
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@ -260,6 +271,9 @@ void handle_inverter()
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#ifdef RENAULT_ZOE_BATTERY
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update_values_zoe_battery(); //Map the values to the correct registers
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#endif
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#ifdef IMIEV_ION_CZERO_BATTERY
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update_values_imiev_battery(); //Map the values to the correct registers
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#endif
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#ifdef SOLAX_CAN
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update_values_can_solax();
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#endif
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