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Correct shifting of amp limits

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This commit is contained in:
Daniel Öster 2025-09-10 21:01:13 +03:00
parent 521ab481d7
commit 2e859a1ee6
1 changed files with 9 additions and 22 deletions
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31
Software/src/battery/RIVIAN-BATTERY.cpp
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@ -8,7 +8,7 @@
/*
Initial support for Rivian BIG battery (135kWh)
The battery has 3x CAN channels
- Failover CAN (CAN-FD) lots of content, not required for operation
- Failover CAN (CAN-FD) lots of content, not required for operation. Has all cellvoltages!
- Platform CAN (500kbps) with all the control messages needed to control the battery <- This is the one we want
- Battery CAN (500kbps) lots of content, not required for operation
*/
@ -25,17 +25,8 @@ void RivianBattery::update_values() {
datalayer.battery.status.remaining_capacity_Wh = static_cast<uint32_t>(
(static_cast<double>(datalayer.battery.status.real_soc) / 10000) * datalayer.battery.info.total_capacity_Wh);
//static lower limits for testing
// datalayer.battery.info.total_capacity_Wh = 10000;
// datalayer.battery.status.remaining_capacity_Wh = 9800;
datalayer.battery.status.max_charge_power_W = ((battery_voltage / 10) * ((battery_charge_limit_amp / 20)));
datalayer.battery.status.max_discharge_power_W =
(abs((battery_voltage / 10) * ((battery_discharge_limit_amp / 20) - 3276.75)));
//static lower limits for testing
// datalayer.battery.status.max_charge_power_W = 2000;
// datalayer.battery.status.max_discharge_power_W = 3000;
datalayer.battery.status.max_charge_power_W = ((battery_voltage / 10) * battery_charge_limit_amp);
datalayer.battery.status.max_discharge_power_W = ((battery_voltage / 10) * battery_discharge_limit_amp);
datalayer.battery.status.cell_min_voltage_mV = 3700 - BMS_state;
datalayer.battery.status.cell_max_voltage_mV = 3700;
@ -74,22 +65,18 @@ void RivianBattery::handle_incoming_can_frame(CAN_frame rx_frame) {
datalayer.battery.status.CAN_battery_still_alive = CAN_STILL_ALIVE;
BMS_state = (rx_frame.data.u8[0] & 0x03);
break;
case 0x100: //Discharge/Charge speed (Not visible on Platform-CAN?)
battery_charge_limit_amp = ((uint32_t)((rx_frame.data.u8[3] << 24) | (rx_frame.data.u8[2] << 16) |
(rx_frame.data.u8[1] << 8) | rx_frame.data.u8[0]) &
0b1111111111111111000000000000) >>
12;
case 0x100: //Discharge/Charge speed
battery_charge_limit_amp =
(((rx_frame.data.u8[3] & 0x0F) << 8) | (rx_frame.data.u8[2] << 4) | (rx_frame.data.u8[1] >> 4)) / 20;
battery_discharge_limit_amp =
((uint32_t)((rx_frame.data.u8[5] << 16) | (rx_frame.data.u8[4] << 8) | rx_frame.data.u8[3]) &
0b11111111111111110000) >>
4;
(((rx_frame.data.u8[5] & 0x0F) << 8) | (rx_frame.data.u8[4] << 4) | (rx_frame.data.u8[3] >> 4)) / 20;
break;
case 0x153: //Temperatures (Not visible on Platform-CAN?)+
case 0x153: //Temperatures
datalayer.battery.status.CAN_battery_still_alive = CAN_STILL_ALIVE;
battery_max_temperature = (rx_frame.data.u8[5] / 2) - 40;
battery_min_temperature = (rx_frame.data.u8[6] / 2) - 40;
break;
case 0x55B: //Temperatures (Not visible on Platform-CAN?)+
case 0x55B: //Temperatures
datalayer.battery.status.CAN_battery_still_alive = CAN_STILL_ALIVE;
battery_SOC = (rx_frame.data.u8[4] << 8) | rx_frame.data.u8[5];
break;