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Battery protection (#888)

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* Battery protection

If your car battery voltage is lower than 0% switch off charging to stop the Eon from damaging the 12v car battery. Leaving you with a car that can not start but has a fully charged eon ;-)

* add rbiasini comment && !ignition

* Update Offroad_ChargeDisabled with voltage low

* simplify alert

* non-temporal hysteresis from @rbiasini

And up the start charge limit to 12v. i.e. 50% car battery voltage

* once battery power recovers to 11.500 volts charge

This leaves 1v inbetween for any fluctuations that could occur.

* fix indent

* Fix indent of whole block

It looks like sometimes when you copy and paste into the github web interface some white spacing gets added or removed. BE AWARE!
This commit is contained in:
Arne Schwarck
2019-12-04 20:46:39 +01:00
committed by rbiasini
parent f559477ab1
commit 5bf610ddf2
2 changed files with 12 additions and 2 deletions
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12
selfdrive/boardd/boardd.cc
View File

@@ -57,6 +57,8 @@ bool loopback_can = false;
cereal::HealthData::HwType hw_type = cereal::HealthData::HwType::UNKNOWN;
bool is_pigeon = false;
const uint32_t NO_IGNITION_CNT_MAX = 2 * 60 * 60 * 24 * 3; // turn off charge after 3 days
const uint32_t VBATT_START_CHARGING = 11500;
const uint32_t VBATT_PAUSE_CHARGING = 10500;
uint32_t no_ignition_cnt = 0;
bool connected_once = false;
bool ignition_last = false;
@@ -353,12 +355,20 @@ void can_health(PubSocket *publisher) {
}
#ifndef __x86_64__
if ((no_ignition_cnt > NO_IGNITION_CNT_MAX) && (health.usb_power_mode == (uint8_t)(cereal::HealthData::UsbPowerMode::CDP))) {
bool cdp_mode = health.usb_power_mode == (uint8_t)(cereal::HealthData::UsbPowerMode::CDP);
bool no_ignition_exp = no_ignition_cnt > NO_IGNITION_CNT_MAX;
if ((no_ignition_exp || (health.voltage < VBATT_PAUSE_CHARGING)) && cdp_mode && !ignition) {
printf("TURN OFF CHARGING!\n");
pthread_mutex_lock(&usb_lock);
libusb_control_transfer(dev_handle, 0xc0, 0xe6, (uint16_t)(cereal::HealthData::UsbPowerMode::CLIENT), 0, NULL, 0, TIMEOUT);
pthread_mutex_unlock(&usb_lock);
}
if (!no_ignition_exp && (health.voltage > VBATT_START_CHARGING) && !cdp_mode) {
printf("TURN ON CHARGING!\n");
pthread_mutex_lock(&usb_lock);
libusb_control_transfer(dev_handle, 0xc0, 0xe6, (uint16_t)(cereal::HealthData::UsbPowerMode::CDP), 0, NULL, 0, TIMEOUT);
pthread_mutex_unlock(&usb_lock);
}
#endif
// clear VIN, CarParams, and set new safety on car start

2
selfdrive/controls/lib/alerts_offroad.json
View File

@@ -1,6 +1,6 @@
{
"Offroad_ChargeDisabled": {
"text": "EON charging disabled after car being off for more than 3 days. Turn ignition on to start charging again.",
"text": "EON charging disabled after car being off for more than 3 days or car voltage too low. Turn ignition on to start charging again.",
"severity": 0
},
"Offroad_TemperatureTooHigh": {