foxBMS  1.1.0
The foxBMS Battery Management System API Documentation
soc_counting.c File Reference

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

#include "soc_counting.h"
#include "bms.h"
#include "database.h"
#include "foxmath.h"
#include "fram.h"
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Data Structures

struct  SOC_STATE
 

Macros

#define MAXIMUM_SOC_PERC   (100.0f)
 
#define MINIMUM_SOC_PERC   (0.0f)
 

Typedefs

typedef struct SOC_STATE SOC_STATE_s
 

Functions

static float 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 socMinimumValue_perc, float socMaximumValue_perc, float 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 SOC_Init (DATA_BLOCK_SOX_s *pSocValues, bool ccPresent, uint8_t stringNumber)
 initializes startup SOC-related values like lookup from nonvolatile ram at startup More...
 
void SOC_Calculation (DATA_BLOCK_SOX_s *pSocValues)
 periodically called algorithm to calculate state-of-charge (SOC) More...
 
float SOC_GetFromVoltage (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.

SPDX-License-Identifier: BSD-3-Clause

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Author
foxBMS Team
Date
2020-10-07 (date of creation)
Updated
2021-05-20 (date of last update)
Prefix
SOC

Definition in file soc_counting.c.

Macro Definition Documentation

◆ MAXIMUM_SOC_PERC

#define MAXIMUM_SOC_PERC   (100.0f)

defines for maximum and minimum SOC

Definition at line 74 of file soc_counting.c.

◆ MINIMUM_SOC_PERC

#define MINIMUM_SOC_PERC   (0.0f)

Definition at line 75 of file soc_counting.c.

Typedef Documentation

◆ SOC_STATE_s

typedef struct SOC_STATE SOC_STATE_s

This structure contains all the variables relevant for the SOX

Function Documentation

◆ SOC_Calculation()

void SOC_Calculation ( DATA_BLOCK_SOX_s pSocValues)

periodically called algorithm to calculate state-of-charge (SOC)

Parameters
[out]pSocValuespointer to SOC values

Definition at line 278 of file soc_counting.c.

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◆ 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]pTableSocpointer to database struct with SOC values
[in]stringNumberstring that is checked

Definition at line 202 of file soc_counting.c.

◆ SOC_GetFromVoltage()

float SOC_GetFromVoltage ( int16_t  voltage_mV)

look-up table for SOC initialization

Parameters
[in]voltage_mVvoltage in mV of battery cell
Returns
returns SOC value in percentage from 0.0% to 100.0%

Definition at line 368 of file soc_counting.c.

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◆ SOC_GetStringSocPercentageFromCharge()

static float SOC_GetStringSocPercentageFromCharge ( uint32_t  charge_As)
static

calculates string SOC in percentage from passed string charge in As

Parameters
[in]charge_Ascharge in As
Returns
returns corresponding string SOC in percentage [0.0, 100.0]

Definition at line 145 of file soc_counting.c.

◆ SOC_Init()

void SOC_Init ( DATA_BLOCK_SOX_s pSocValues,
bool  cc_present,
uint8_t  stringNumber 
)

initializes startup SOC-related values like lookup from nonvolatile ram at startup

Parameters
[out]pSocValuespointer to SOC database entry
[in]cc_presenttrue if current sensor present, false otherwise
[in]stringNumberstring addressed

Definition at line 236 of file soc_counting.c.

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◆ 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]pTableSocpointer to database enty with SOC values

Definition at line 150 of file soc_counting.c.

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◆ SOC_SetValue()

static void SOC_SetValue ( DATA_BLOCK_SOX_s pTableSoc,
float  socMinimumValue_perc,
float  socMaximumValue_perc,
float  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]pTableSocpointer to SOC database entry
[in]socMinimumValue_percSOC min value to set
[in]socMaximumValue_percSOC max value to set
[in]socAverageValue_percSOC average value to set
[in]stringNumberaddressed string

Definition at line 166 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]pTableSocpointer to database struct with SOC values
[in]stringNumberaddressed string

Definition at line 226 of file soc_counting.c.

Variable Documentation

◆ soc_state

SOC_STATE_s soc_state
static
Initial value:
= {
.socInitialized = false,
.sensorCcUsed = {REPEAT_U(false, STRIP(BS_NR_OF_STRINGS))},
.ccScalingAverage = {REPEAT_U(0.0f, STRIP(BS_NR_OF_STRINGS))},
.ccScalingMinimum = {REPEAT_U(0.0f, STRIP(BS_NR_OF_STRINGS))},
.ccScalingMaximum = {REPEAT_U(0.0f, STRIP(BS_NR_OF_STRINGS))},
.previousTimestamp = {REPEAT_U(0u, STRIP(BS_NR_OF_STRINGS))},
}
#define BS_NR_OF_STRINGS
#define STRIP(x)
Definition: general.h:268
#define REPEAT_U(x, n)
Macro that helps to generate a series of literals (for array initializers).
Definition: general.h:256

state variable for SOC module

Definition at line 79 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 90 of file soc_counting.c.