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

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

Include dependency graph for sof.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 SOF_CURVE_s	sof_curveMol

static SOF_CURVE_s	sof_curveRsl

static SOF_CURVE_s	sof_curveMsl


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 - 2021, Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V. All rights reserved.

BSD 3-Clause License Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:

Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.
Neither the name of the copyright holder nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

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:

″This product uses parts of foxBMS®″

″This product includes parts of foxBMS®″

″This product is derived from foxBMS®″

Author: foxBMS Team

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

Updated: 2021-03-24 (date of last update)

Prefix: SOX

Definition in file sof.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 141 of file sof.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 232 of file sof.c.

Here is the call graph for this function:

◆ 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 189 of file sof.c.

◆ SOF_Calculation()

void SOF_Calculation ( void )

triggers SOF calculation

TODO

Definition at line 358 of file sof.c.

Here is the call graph for this function:

◆ 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 342 of file sof.c.

Here is the call graph for this function:

◆ 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 326 of file sof.c.

Here is the call graph for this function:

Variable Documentation

◆ sof_curveMol

SOF_CURVE_s sof_curveMol

static

module-local static Variables that are calculated at startup and used later to avoid divisions at runtime

Definition at line 73 of file sof.c.

◆ sof_curveMsl

SOF_CURVE_s sof_curveMsl

static

module-local static Variables that are calculated at startup and used later to avoid divisions at runtime

Definition at line 75 of file sof.c.

◆ sof_curveRecommendedOperatingCurrent

SOF_CURVE_s sof_curveRecommendedOperatingCurrent

static

module-local static Variables that are calculated at startup and used later to avoid divisions at runtime

Definition at line 72 of file sof.c.

◆ sof_curveRsl

SOF_CURVE_s sof_curveRsl

static

module-local static Variables that are calculated at startup and used later to avoid divisions at runtime

Definition at line 74 of file sof.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 80 of file sof.c.

◆ sof_tableSofValues

DATA_BLOCK_SOF_s sof_tableSofValues = {.header.uniqueId = DATA_BLOCK_ID_SOF}

static

local copies of database tables

Definition at line 81 of file sof.c.

Functions

Variables

Detailed Description

Function Documentation

◆ SOF_CalculateCurves()

◆ SOF_CalculateTemperatureBasedCurrentLimit()

◆ SOF_CalculateVoltageBasedCurrentLimit()

◆ SOF_Calculation()

◆ SOF_Init()

◆ SOF_MinimumOfTwoSofValues()

Variable Documentation

◆ sof_curveMol

◆ sof_curveMsl

◆ sof_curveRecommendedOperatingCurrent

◆ sof_curveRsl

◆ sof_tableMinimumMaximumValues

◆ sof_tableSofValues