soc_counting.c File Reference

SOC module responsible for calculation of SOC. More...

#include "general.h"
#include "soc_counting.h"
#include "bms.h"
#include "database.h"
#include "foxmath.h"
#include "fram.h"
#include <math.h>
#include <stdbool.h>
#include <stdint.h>

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Data Structures
struct	SOC_STATE_s

Macros
#define	SOC_MAXIMUM_SOC_perc   (100.0f)
#define	SOC_MINIMUM_SOC_perc   (0.0f)

Functions
static float_t	SOC_GetStringSocPercentageFromCharge (uint32_t charge_As)
	calculates string SOC in percentage from passed string charge in As More...
static void	SOC_RecalibrateViaLookupTable (DATA_BLOCK_SOX_s *pTableSoc)
	initializes database and FRAM SOC values via lookup table (average, minimum and maximum). More...
static void	SOC_SetValue (DATA_BLOCK_SOX_s *pTableSoc, float_t socMinimumValue_perc, float_t socMaximumValue_perc, float_t socAverageValue_perc, uint8_t stringNumber)
	sets SOC value with a parameter between 0.0 and 100.0. More...
static void	SOC_CheckDatabaseSocPercentageLimits (DATA_BLOCK_SOX_s *pTableSoc, uint8_t stringNumber)
	Check if all database SOC percentage values are within [0.0, 100.0] Limits SOC values to limit values if outside of this range. More...
static void	SOC_UpdateNvmValues (DATA_BLOCK_SOX_s *pTableSoc, uint8_t stringNumber)
	Set SOC-related values in non-volatile memory. More...
void	SE_InitializeStateOfCharge (DATA_BLOCK_SOX_s *pSocValues, bool ccPresent, uint8_t stringNumber)
	initializes startup SOC-related values like lookup from nonvolatile ram at startup More...
void	SE_CalculateStateOfCharge (DATA_BLOCK_SOX_s *pSocValues)
	periodically called algorithm to calculate state-of-charge (SOC) More...
float_t	SE_GetStateOfChargeFromVoltage (int16_t voltage_mV)
	look-up table for SOC initialization More...

Variables
static SOC_STATE_s	soc_state
static DATA_BLOCK_CURRENT_SENSOR_s	soc_tableCurrentSensor = {.header.uniqueId = DATA_BLOCK_ID_CURRENT_SENSOR}

Detailed Description

SOC module responsible for calculation of SOC.

Copyright

© 2010 - 2023, Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V. All rights reserved.

SPDX-License-Identifier: BSD-3-Clause

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

1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
2. 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.
3. 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:

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Author

foxBMS Team

Date

2020-10-07 (date of creation)

Updated

2023-02-03 (date of last update)

Version

v1.5.0

Prefix

SOC

Definition in file soc_counting.c.

Macro Definition Documentation

SOC_MAXIMUM_SOC_perc

#define SOC_MAXIMUM_SOC_perc   (100.0f)

Maximum SOC in percentage

Definition at line 81 of file soc_counting.c.

SOC_MINIMUM_SOC_perc

#define SOC_MINIMUM_SOC_perc   (0.0f)

Minimum SOC in percentage

Definition at line 83 of file soc_counting.c.

Function Documentation

SOC_CheckDatabaseSocPercentageLimits()

static void SOC_CheckDatabaseSocPercentageLimits ( DATA_BLOCK_SOX_s *  pTableSoc, uint8_t  stringNumber  )

static

Check if all database SOC percentage values are within [0.0, 100.0] Limits SOC values to limit values if outside of this range.

Parameters

[in,out]	pTableSoc	pointer to database struct with SOC values
[in]	stringNumber	string that is checked

Definition at line 210 of file soc_counting.c.

SOC_GetStringSocPercentageFromCharge()

static float_t SOC_GetStringSocPercentageFromCharge ( uint32_t  charge_As )

static

calculates string SOC in percentage from passed string charge in As

Parameters

[in]

charge_As

charge in As

Returns

returns corresponding string SOC in percentage [0.0, 100.0]

Definition at line 153 of file soc_counting.c.

SOC_RecalibrateViaLookupTable()

static void SOC_RecalibrateViaLookupTable ( DATA_BLOCK_SOX_s *  pTableSoc )

static

initializes database and FRAM SOC values via lookup table (average, minimum and maximum).

Parameters

[out]

pTableSoc

pointer to database enty with SOC values

Definition at line 158 of file soc_counting.c.

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SOC_SetValue()

static void SOC_SetValue ( DATA_BLOCK_SOX_s *  pTableSoc, float_t  socMinimumValue_perc, float_t  socMaximumValue_perc, float_t  socAverageValue_perc, uint8_t  stringNumber  )

static

sets SOC value with a parameter between 0.0 and 100.0.

limits the SOE value to 0.0 respectively 100.0 if a value outside of the allowed SOE range is passed. Updates local fram and database struct but does NOT write them

Parameters

[out]	pTableSoc	pointer to SOC database entry
[in]	socMinimumValue_perc	SOC min value to set
[in]	socMaximumValue_perc	SOC max value to set
[in]	socAverageValue_perc	SOC average value to set
[in]	stringNumber	addressed string

Definition at line 174 of file soc_counting.c.

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SOC_UpdateNvmValues()

static void SOC_UpdateNvmValues ( DATA_BLOCK_SOX_s *  pTableSoc, uint8_t  stringNumber  )

static

Set SOC-related values in non-volatile memory.

Parameters

[in]	pTableSoc	pointer to database struct with SOC values
[in]	stringNumber	addressed string

Definition at line 234 of file soc_counting.c.

Variable Documentation

soc_state

SOC_STATE_s soc_state

static

Initial value:

= {
    .socInitialized    = false,
    .sensorCcUsed      = {GEN_REPEAT_U(false, GEN_STRIP(BS_NR_OF_STRINGS))},
    .ccScalingAverage  = {GEN_REPEAT_U(0.0f, GEN_STRIP(BS_NR_OF_STRINGS))},
    .ccScalingMinimum  = {GEN_REPEAT_U(0.0f, GEN_STRIP(BS_NR_OF_STRINGS))},
    .ccScalingMaximum  = {GEN_REPEAT_U(0.0f, GEN_STRIP(BS_NR_OF_STRINGS))},
    .previousTimestamp = {GEN_REPEAT_U(0u, GEN_STRIP(BS_NR_OF_STRINGS))},
}

state variable for SOC module

Definition at line 87 of file soc_counting.c.

soc_tableCurrentSensor

DATA_BLOCK_CURRENT_SENSOR_s soc_tableCurrentSensor = {.header.uniqueId = DATA_BLOCK_ID_CURRENT_SENSOR}

static

local copies of database tables

Definition at line 98 of file soc_counting.c.