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SoC for stacks

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This commit is contained in:
jazzpi
2022-08-12 13:01:44 +02:00
parent 857ca68d83
commit 08b02a5a5d
1 changed files with 43 additions and 47 deletions
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90
charger-display.py
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@ -54,6 +54,22 @@ MASTER_THRESH_OT = 1
MASTER_THRESH_UV = 2 MASTER_THRESH_UV = 2
MASTER_THRESH_OV = 3 MASTER_THRESH_OV = 3
INTERNAL_RESISTANCE_CURVE_X = [2.0, 4.12]
INTERNAL_RESISTANCE_CURVE_Y = [0.0528, 0.0294]
SOC_OCV_X = [2.1, 2.9, 3.2, 3.3, 3.4, 3.5, 3.68, 4.0, 4.15, 4.2]
SOC_OCV_Y = [0, 0.023, 0.06, 0.08, 0.119, 0.227, 0.541, 0.856, 0.985, 1.0]
def estimate_soc(voltage: float) -> float:
r_i = np.interp(
[voltage],
INTERNAL_RESISTANCE_CURVE_X,
INTERNAL_RESISTANCE_CURVE_Y,
)[0]
i = data.current / PARALLEL_CELLS
ocv = voltage - i * r_i
return np.interp([ocv], SOC_OCV_X, SOC_OCV_Y)[0] * 100
class SlaveData: class SlaveData:
cell_voltages: list[float] cell_voltages: list[float]
@ -135,63 +151,58 @@ class AccumulatorData:
class StackGuiElement: class StackGuiElement:
title: str title: str
stack_id: int stack_id: int
min_voltage_label: QLabel voltage_label: QLabel
max_voltage_label: QLabel soc_label: QLabel
min_temp_label: QLabel temp_label: QLabel
max_temp_label: QLabel
groupBox: QGroupBox groupBox: QGroupBox
detail_popup: QWidget detail_popup: QWidget
def __init__(self, title: str, stack_id: int): def __init__(self, title: str, stack_id: int):
self.title = title self.title = title
self.stack_id = stack_id self.stack_id = stack_id
self.min_voltage_label = QLabel() self.voltage_label = QLabel()
self.max_voltage_label = QLabel() self.soc_label = QLabel()
self.min_temp_label = QLabel() self.temp_label = QLabel()
self.max_temp_label = QLabel()
self.groupBox = QGroupBox() self.groupBox = QGroupBox()
self.detail_popup = None self.detail_popup = None
self.__post__init__() self.__post__init__()
def __post__init__(self): def __post__init__(self):
l1 = QLabel("Min Voltage [V]") l1 = QLabel("Voltage [V]")
l2 = QLabel("Max Voltage [V]") l2 = QLabel("SoC [%]")
l3 = QLabel("Min Temperature [°C]") l3 = QLabel("Temperature [°C]")
l4 = QLabel("Max Temperature [°C]")
popup_btn = QPushButton("Details") popup_btn = QPushButton("Details")
popup_btn.clicked.connect(self.show_popup) popup_btn.clicked.connect(self.show_popup)
l1.setAlignment(Qt.AlignLeft) l1.setAlignment(Qt.AlignLeft)
l2.setAlignment(Qt.AlignLeft) l2.setAlignment(Qt.AlignLeft)
l3.setAlignment(Qt.AlignLeft) l3.setAlignment(Qt.AlignLeft)
l4.setAlignment(Qt.AlignLeft)
self.min_voltage_label.setAlignment(Qt.AlignLeft) self.voltage_label.setAlignment(Qt.AlignLeft)
self.max_voltage_label.setAlignment(Qt.AlignLeft) self.soc_label.setAlignment(Qt.AlignLeft)
self.min_temp_label.setAlignment(Qt.AlignLeft) self.temp_label.setAlignment(Qt.AlignLeft)
self.max_temp_label.setAlignment(Qt.AlignLeft)
grid = QGridLayout() grid = QGridLayout()
grid.addWidget(l1, 0, 0) grid.addWidget(l1, 0, 0)
grid.addWidget(l2, 1, 0) grid.addWidget(l2, 1, 0)
grid.addWidget(l3, 2, 0) grid.addWidget(l3, 2, 0)
grid.addWidget(l4, 3, 0)
grid.addWidget(self.min_voltage_label, 0, 1) grid.addWidget(self.voltage_label, 0, 1)
grid.addWidget(self.max_voltage_label, 1, 1) grid.addWidget(self.soc_label, 1, 1)
grid.addWidget(self.min_temp_label, 2, 1) grid.addWidget(self.temp_label, 2, 1)
grid.addWidget(self.max_temp_label, 3, 1)
grid.addWidget(popup_btn, 0, 2) grid.addWidget(popup_btn, 3, 0)
self.groupBox.setTitle(self.title) self.groupBox.setTitle(self.title)
self.groupBox.setLayout(grid) self.groupBox.setLayout(grid)
def update_data_from_slave(self, slave: SlaveData): def update_data_from_slave(self, slave: SlaveData):
self.min_voltage_label.setText(f"{min(slave.cell_voltages):.02f}") min_v, max_v = min(slave.cell_voltages), max(slave.cell_voltages)
self.max_voltage_label.setText(f"{max(slave.cell_voltages):.02f}") self.voltage_label.setText(f"[{min_v:.02f}, {max_v:.02f}]")
self.min_temp_label.setText(f"{min(slave.cell_temps):.02f}") min_soc, max_soc = estimate_soc(min_v), estimate_soc(max_v)
self.max_temp_label.setText(f"{max(slave.cell_temps):.02f}") self.soc_label.setText(f"[{min_soc:02.0f}, {max_soc:02.0f}]")
min_t, max_t = min(slave.cell_temps), max(slave.cell_temps)
self.temp_label.setText(f"[{min_t:.02f}, {max_t:.02f}]")
def show_popup(self): def show_popup(self):
if self.detail_popup is None: if self.detail_popup is None:
@ -265,6 +276,7 @@ class StackPopup(QWidget):
groupbox.setLayout(grid) groupbox.setLayout(grid)
layout.addWidget(groupbox) layout.addWidget(groupbox)
self.setLayout(layout) self.setLayout(layout)
self.setWindowTitle(f"FT22 Charger Display - Stack {stack_id} Details")
self.update_data() self.update_data()
timer.timeout.connect(self.update_data) timer.timeout.connect(self.update_data)
@ -470,8 +482,8 @@ class Window(QWidget):
# Accumulator # Accumulator
self.l_min_voltage.setText(f"{data.min_voltage:.02f}") self.l_min_voltage.setText(f"{data.min_voltage:.02f}")
self.l_max_voltage.setText(f"{data.max_voltage:.02f}") self.l_max_voltage.setText(f"{data.max_voltage:.02f}")
self.l_min_soc.setText(f"{data.min_soc:.01f}") self.l_min_soc.setText(f"{data.min_soc:02.0f}")
self.l_max_soc.setText(f"{data.max_soc:.01f}") self.l_max_soc.setText(f"{data.max_soc:02.0f}")
self.l_min_temp.setText(f"{data.min_temp:.02f}") self.l_min_temp.setText(f"{data.min_temp:.02f}")
self.l_max_temp.setText(f"{data.max_temp:.02f}") self.l_max_temp.setText(f"{data.max_temp:.02f}")
self.l_current.setText(f"{data.current:.02f}") self.l_current.setText(f"{data.current:.02f}")
@ -612,8 +624,8 @@ class Worker(QObject):
] ]
data.min_voltage = min(voltages) data.min_voltage = min(voltages)
data.max_voltage = max(voltages) data.max_voltage = max(voltages)
data.min_soc = self.calculate_soc(data.min_voltage) data.min_soc = estimate_soc(data.min_voltage)
data.max_soc = self.calculate_soc(data.max_voltage) data.max_soc = estimate_soc(data.max_voltage)
data.min_temp = min(temps) data.min_temp = min(temps)
data.max_temp = max(temps) data.max_temp = max(temps)
data.time_since_last_frame = time.time() - data.last_frame data.time_since_last_frame = time.time() - data.last_frame
@ -678,22 +690,6 @@ class Worker(QObject):
data.ts_state = TSState(state) data.ts_state = TSState(state)
data.panic = data.ts_state == TSState.TS_ERROR data.panic = data.ts_state == TSState.TS_ERROR
INTERNAL_RESISTANCE_CURVE_X = [2.0, 4.12]
INTERNAL_RESISTANCE_CURVE_Y = [0.0528, 0.0294]
SOC_OCV_X = [2.1, 2.9, 3.2, 3.3, 3.4, 3.5, 3.68, 4.0, 4.15, 4.2]
SOC_OCV_Y = [0, 0.023, 0.06, 0.08, 0.119, 0.227, 0.541, 0.856, 0.985, 1.0]
def calculate_soc(self, voltage: float):
r_i = np.interp(
[voltage],
self.INTERNAL_RESISTANCE_CURVE_X,
self.INTERNAL_RESISTANCE_CURVE_Y,
)[0]
# i = data.current / PARALLEL_CELLS
i = 3 / PARALLEL_CELLS
ocv = voltage - i * r_i
return np.interp([ocv], self.SOC_OCV_X, self.SOC_OCV_Y)[0] * 100
def parse_cell_temps(self, slave: int): def parse_cell_temps(self, slave: int):
temps = list( temps = list(
filter(lambda t: t > 0 and t < 60, data.slaves[slave].cell_temps[:16]) filter(lambda t: t > 0 and t < 60, data.slaves[slave].cell_temps[:16])