1. 根据当前soc和放电电流决定放电系数，稍微加快一点放电

2. 最小电芯电压小于2.9v, 电量大于10%，强制电量为10%

Signed-off-by: huhui <huhui@sharkgulf.com>

Application/app/sox/soc.c

@@ -77,7 +77,7 @@ void soc_restore_by_iap(uint8_t flags, uint8_t capaticy){
 	nv_save_all_soc();
 }
 
-static void soc_jugde_temp(void){
+static void soc_update_discharger_coeff(void){
 	int low_temp = 0xFFFF;
 	for (int i = 0; i < PACK_TEMPS_NUM-1; i++) {
 		low_temp = MIN(low_temp, measure_value()->pack_temp[i]);
@@ -98,6 +98,35 @@ static void soc_jugde_temp(void){
 		}
 		force_full_ts = 0xFFFFFFFF;
 	}
+	if (_soc.flags & SOC_FLAG_CALIBRATED) {
+		float coff = 1.0f;
+		if (_soc.capacity <= 20) {
+			if (abs(measure_value()->load_current) >= 50000) {
+				coff = 1.06f;
+			}else if (abs(measure_value()->load_current) >= 40000) {
+				coff = 1.05f;
+			}else if (abs(measure_value()->load_current) >= 30000) {
+				coff = 1.03f;
+			}
+		}else if (_soc.capacity <= 40) {
+			if (abs(measure_value()->load_current) >= 50000) {
+				coff = 1.05f;
+			}else if (abs(measure_value()->load_current) >= 40000) {
+				coff = 1.03f;
+			}else if (abs(measure_value()->load_current) >= 30000) {
+				coff = 1.02f;
+			}
+		}else if (_soc.capacity <= 60) {
+			if (abs(measure_value()->load_current) >= 50000) {
+				coff = 1.03f;
+			}else if (abs(measure_value()->load_current) >= 40000) {
+				coff = 1.02f;
+			}else if (abs(measure_value()->load_current) >= 30000) {
+				coff = 1.01f;
+			}
+		}
+		_discharger_coefficient = _discharger_coefficient * coff;
+	}
 }
 
 #if LEAST_SQUARE==1
@@ -226,6 +255,18 @@ static int _soc_is_under_voltage(void) {
 		bms_health()->discharger_lower_voltage);
 }
 
+static int _soc_force_capaticy(uint8_t capaticy){
+	float cap = (float)capaticy / 100.0f;
+	float min = (_soc.coulomb_now - cap * _soc.coulomb_max)/(1.0f - cap);
+	if (min > 0.0f) {
+		_soc.coulomb_min = min;
+		_soc.capacity = capaticy;
+		force_full_ts = 0xFFFFFFFF;
+		return 1;
+	}
+	return 0;
+}
+
 static int _soc_update_by_ocv(uint8_t prev_charge_status){
 	static int ocv_full_count = 0;
 	int changed = 0;
@@ -243,6 +284,9 @@ static int _soc_update_by_ocv(uint8_t prev_charge_status){
 			}
 			_soc.capacity = 0;
 			return 1;
+		}else if ((!prev_charge_status) && (bms_state_get()->cell_min_vol <= 2900) && (_soc.capacity > 10)) {
+			/* 如果单电芯最小电压小于2.9v，并且容量大于10%，需要校准到10% */
+			return _soc_force_capaticy(10);
 		}
 	}
 	if (chargering || prev_charge_status) {
@@ -353,7 +397,7 @@ static void soc_update_by_current_and_time(float current_now, float delta_time,
 			update_capticy = 1;
 		}
 	}else {
-		soc_jugde_temp();
+		soc_update_discharger_coeff();
 		delta_q = delta_q * _discharger_coefficient;
 		_soc.dischrger_coulomb += abs(delta_q);
 		if ((est_capaticy > 0) && (est_capaticy <= _soc.capacity)) {  //放电，容量不能等于0，需要靠欠压或者PowerDown 矫正到0