SOX module responsible for current derating calculation. More...

#include "sof_trapezoid.h"
#include "battery_cell_cfg.h"
#include "battery_system_cfg.h"
#include "bms.h"
#include "database.h"
#include "foxmath.h"
#include "state_estimation.h"
#include <float.h>

Include dependency graph for sof_trapezoid.c:

Go to the source code of this file.

Functions
static void	SOF_CalculateCurves (const SOF_CONFIG_s pConfigurationValues, SOF_CURVE_s pCalculatedSofCurveValues)
	calculate SOF curve depending on configured configuration values More...

static void	SOF_CalculateVoltageBasedCurrentLimit (int16_t minimumCellVoltage_mV, int16_t maximumCellVoltage_mV, SOF_CURRENT_LIMITS_s pAllowedVoltageBasedCurrent, const SOF_CONFIG_s pConfigLimitValues, SOF_CURVE_s *pCalculatedSofCurves)
	calculates the SoF from voltage data (i.e., minimum and maximum voltage) More...

static void	SOF_CalculateTemperatureBasedCurrentLimit (int16_t minimumCellTemperature_ddegC, int16_t maximumCellTemperature_ddegC, SOF_CURRENT_LIMITS_s pAllowedTemperatureBasedCurrent, const SOF_CONFIG_s pConfigLimitValues, SOF_CURVE_s *pCalculatedSofCurves)
	calculates the SoF from temperature data (i.e., minimum and maximum temperature of cells) More...

static SOF_CURRENT_LIMITS_s	SOF_MinimumOfTwoSofValues (SOF_CURRENT_LIMITS_s voltageBasedLimits, SOF_CURRENT_LIMITS_s temperatureBasedLimits)
	get the minimum current values of all variants of SoF calculation More...

void	SOF_Init (void)
	initializes the area for SOF (where derating starts and is fully active). More...

void	SOF_Calculation (void)
	triggers SOF calculation More...

Variables

static SOF_CURVE_s	sof_curveRecommendedOperatingCurrent


static DATA_BLOCK_MIN_MAX_s	sof_tableMinimumMaximumValues = {.header.uniqueId = DATA_BLOCK_ID_MIN_MAX}

static DATA_BLOCK_SOF_s	sof_tableSofValues = {.header.uniqueId = DATA_BLOCK_ID_SOF}

Detailed Description

SOX module responsible for current derating calculation.

Copyright: © 2010 - 2022, Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V. All rights reserved.

SPDX-License-Identifier: BSD-3-Clause

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Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
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We kindly request you to use one or more of the following phrases to refer to foxBMS in your hardware, software, documentation or advertising materials:

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Author: foxBMS Team

Date: 2020-10-07 (date of creation)

Updated: 2022-10-27 (date of last update)

Version: v1.4.1

Prefix: SOF

Definition in file sof_trapezoid.c.

Function Documentation

◆ SOF_CalculateCurves()

static void SOF_CalculateCurves	(	const SOF_CONFIG_s *	pConfigurationValues,
		SOF_CURVE_s *	pCalculatedSofCurveValues
	)

static

calculate SOF curve depending on configured configuration values

Parameters

[in]	pConfigurationValues	SOF curve configuration values
[out]	pCalculatedSofCurveValues	calculate SOF curve

Definition at line 140 of file sof_trapezoid.c.

◆ SOF_CalculateTemperatureBasedCurrentLimit()

static void SOF_CalculateTemperatureBasedCurrentLimit	(	int16_t	minimumCellTemperature_ddegC,
		int16_t	maximumCellTemperature_ddegC,
		SOF_CURRENT_LIMITS_s *	pAllowedTemperatureBasedCurrent,
		const SOF_CONFIG_s *	pConfigLimitValues,
		SOF_CURVE_s *	pCalculatedSofCurves
	)

static

calculates the SoF from temperature data (i.e., minimum and maximum temperature of cells)

Parameters

[in]	minimumCellTemperature_ddegC	minimum temperature of cells
[in]	maximumCellTemperature_ddegC	maximum temperature of cells
[out]	pAllowedTemperatureBasedCurrent	pointer where to store the results
[in]	pConfigLimitValues	pointer to the structure used for SOF calculation
[in]	pCalculatedSofCurves	pointer to the structure containing limit values

Definition at line 233 of file sof_trapezoid.c.

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◆ SOF_CalculateVoltageBasedCurrentLimit()

static void SOF_CalculateVoltageBasedCurrentLimit	(	int16_t	minimumCellVoltage_mV,
		int16_t	maximumCellVoltage_mV,
		SOF_CURRENT_LIMITS_s *	pAllowedVoltageBasedCurrent,
		const SOF_CONFIG_s *	pConfigLimitValues,
		SOF_CURVE_s *	pCalculatedSofCurves
	)

static

calculates the SoF from voltage data (i.e., minimum and maximum voltage)

Parameters

[in]	minimumCellVoltage_mV	minimum cell voltage
[in]	maximumCellVoltage_mV	maximum cell voltage
[out]	pAllowedVoltageBasedCurrent	Voltage-based SOF
[in]	pConfigLimitValues	pointer to the SOF configuration structure
[in]	pCalculatedSofCurves	pointer to the SOF curve structure

Definition at line 188 of file sof_trapezoid.c.

◆ SOF_Calculation()

void SOF_Calculation ( void )

triggers SOF calculation

TODO

Definition at line 352 of file sof_trapezoid.c.

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◆ SOF_Init()

void SOF_Init ( void )

initializes the area for SOF (where derating starts and is fully active).

Pseudocode for linear function parameter extraction with 2 points:

slope = (y2 - y1) / (x2-x1)
offset = y1 - (slope) * x1
function y= slope * x + offset

Definition at line 347 of file sof_trapezoid.c.

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◆ SOF_MinimumOfTwoSofValues()

static SOF_CURRENT_LIMITS_s SOF_MinimumOfTwoSofValues	(	SOF_CURRENT_LIMITS_s	voltageBasedLimits,
		SOF_CURRENT_LIMITS_s	temperatureBasedLimits
	)

static

get the minimum current values of all variants of SoF calculation

Parameters

[in]	voltageBasedLimits	voltage constrained current derating values
[in]	temperatureBasedLimits	temperature constrained current derating values

Returns: minimum SoF current values

Definition at line 329 of file sof_trapezoid.c.

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Variable Documentation

◆ sof_curveRecommendedOperatingCurrent

SOF_CURVE_s sof_curveRecommendedOperatingCurrent

static

module-local static variable that is calculated at startup and used later to avoid divisions at runtime

Definition at line 74 of file sof_trapezoid.c.

◆ sof_tableMinimumMaximumValues

DATA_BLOCK_MIN_MAX_s sof_tableMinimumMaximumValues = {.header.uniqueId = DATA_BLOCK_ID_MIN_MAX}

static

local copies of database tables

Definition at line 79 of file sof_trapezoid.c.

◆ sof_tableSofValues

DATA_BLOCK_SOF_s sof_tableSofValues = {.header.uniqueId = DATA_BLOCK_ID_SOF}

static

local copies of database tables

Definition at line 80 of file sof_trapezoid.c.

Functions

Variables

Detailed Description

Function Documentation

◆ SOF_CalculateCurves()

◆ SOF_CalculateTemperatureBasedCurrentLimit()

◆ SOF_CalculateVoltageBasedCurrentLimit()

◆ SOF_Calculation()

◆ SOF_Init()

◆ SOF_MinimumOfTwoSofValues()

Variable Documentation

◆ sof_curveRecommendedOperatingCurrent

◆ sof_tableMinimumMaximumValues

◆ sof_tableSofValues