foxBMS  1.1.2
The foxBMS Battery Management System API Documentation
bal_strategy_history.c File Reference

Driver for the Balancing module. More...

#include "bal_strategy_history.h"
#include "battery_cell_cfg.h"
#include "bms.h"
#include "database.h"
#include "os.h"
#include "state_estimation.h"
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Functions

static void BAL_ActivateBalancing (void)
 
static void BAL_Deactivate (void)
 Deactivates history based balancing. More...
 
static void BAL_ProcessStateCheckBalancing (void)
 State machine subfunction to check if balancing is allowed. More...
 
static void BAL_ProcessStateBalancing (void)
 
static bool BAL_CheckImbalances (void)
 
static void BAL_ComputeImbalances (void)
 
STD_RETURN_TYPE_e BAL_GetInitializationState (void)
 gets the initialization state. More...
 
BAL_RETURN_TYPE_e BAL_SetStateRequest (BAL_STATE_REQUEST_e stateRequest)
 sets the current state request of the state variable bal_state. More...
 
void BAL_Trigger (void)
 trigger function for the BAL driver state machine. More...
 

Variables

static DATA_BLOCK_BALANCING_CONTROL_s bal_balancing = {.header.uniqueId = DATA_BLOCK_ID_BALANCING_CONTROL}
 
static DATA_BLOCK_CELL_VOLTAGE_s bal_cellvoltage = {.header.uniqueId = DATA_BLOCK_ID_CELL_VOLTAGE}
 
static BAL_STATE_s bal_state
 

Detailed Description

Driver for the Balancing module.

SPDX-License-Identifier: BSD-3-Clause

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Author
foxBMS Team
Date
2020-05-29 (date of creation)
Updated
2020-07-31 (date of last update)
Prefix
BAL

Definition in file bal_strategy_history.c.

Function Documentation

◆ BAL_ActivateBalancing()

static void BAL_ActivateBalancing ( void  )
static

Activates history based balancing

Definition at line 121 of file bal_strategy_history.c.

◆ BAL_CheckImbalances()

static bool BAL_CheckImbalances ( void  )
static

State machine subfunction to check for voltage imbalances

Definition at line 251 of file bal_strategy_history.c.

◆ BAL_ComputeImbalances()

static void BAL_ComputeImbalances ( void  )
static

State machine subfunction to compute the imbalance of all cells

Definition at line 265 of file bal_strategy_history.c.

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◆ BAL_Deactivate()

static void BAL_Deactivate ( void  )
static

Deactivates history based balancing.

The balancing state of all cells in all strings set to inactivate (that is 0) and the delta charge is set to 0 As. The balancing enable bit is deactivate (that is 0).

Definition at line 158 of file bal_strategy_history.c.

◆ BAL_GetInitializationState()

STD_RETURN_TYPE_e BAL_GetInitializationState ( void  )

gets the initialization state.

This function is used for getting the balancing initialization state

Returns
STD_OK if initialized, otherwise STD_NOT_OK

Definition at line 304 of file bal_strategy_history.c.

◆ BAL_ProcessStateBalancing()

static void BAL_ProcessStateBalancing ( void  )
static

State machine subfunction to balance the battery cell

Definition at line 211 of file bal_strategy_history.c.

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◆ BAL_ProcessStateCheckBalancing()

static void BAL_ProcessStateCheckBalancing ( void  )
static

State machine subfunction to check if balancing is allowed.

Checks if balancing is allowed. If it is it transfers in the actual balancing state.

Definition at line 172 of file bal_strategy_history.c.

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◆ BAL_SetStateRequest()

BAL_RETURN_TYPE_e BAL_SetStateRequest ( BAL_STATE_REQUEST_e  stateRequest)

sets the current state request of the state variable bal_state.

This function is used to make a state request to the state machine, e.g, start voltage measurement, read result of voltage measurement, re-initialization. It calls BAL_CheckStateRequest() to check if the request is valid. The state request is rejected if is not valid. The result of the check is returned immediately, so that the requester can act in case it made a non-valid state request.

Parameters
stateRequeststate request to set
Returns
current state request

Definition at line 308 of file bal_strategy_history.c.

◆ BAL_Trigger()

void BAL_Trigger ( void  )

trigger function for the BAL driver state machine.

This function contains the sequence of events in the BAL state machine. It must be called time-triggered, every 100 milliseconds.

Definition at line 322 of file bal_strategy_history.c.

Variable Documentation

◆ bal_balancing

DATA_BLOCK_BALANCING_CONTROL_s bal_balancing = {.header.uniqueId = DATA_BLOCK_ID_BALANCING_CONTROL}
static

local storage of the DATA_BLOCK_BALANCING_CONTROL_s table

Definition at line 68 of file bal_strategy_history.c.

◆ bal_cellvoltage

DATA_BLOCK_CELL_VOLTAGE_s bal_cellvoltage = {.header.uniqueId = DATA_BLOCK_ID_CELL_VOLTAGE}
static

local storage of the DATA_BLOCK_CELL_VOLTAGE_s table

Definition at line 70 of file bal_strategy_history.c.

◆ bal_state

BAL_STATE_s bal_state
static
Initial value:
= {
.timer = 0,
.stateRequest = BAL_STATE_NO_REQUEST,
.substate = BAL_ENTRY,
.lastSubstate = 0,
.triggerEntry = 0,
.errorRequestCounter = 0,
.initializationFinished = STD_NOT_OK,
.active = false,
.balancingThreshold = BAL_THRESHOLD_mV + BAL_HYSTERESIS_mV,
.balancingAllowed = true,
.balancingGlobalAllowed = false,
}
@ BAL_STATEMACH_UNINITIALIZED
Definition: bal.h:70
@ BAL_ENTRY
Definition: bal.h:88
@ BAL_STATE_NO_REQUEST
Definition: bal.h:106
#define BAL_THRESHOLD_mV
Definition: bal_cfg.h:73
#define BAL_HYSTERESIS_mV
Definition: bal_cfg.h:76
@ STD_NOT_OK
Definition: fstd_types.h:73

contains the state of the contactor state machine

Definition at line 73 of file bal_strategy_history.c.