bal_strategy_voltage.c File Reference

Driver for the Balancing module. More...

#include "bal_strategy_voltage.h"
#include "battery_cell_cfg.h"
#include "bms.h"
#include "database.h"
#include "os.h"

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Functions
static bool	BAL_ActivateBalancing (void)
	Activates voltage based balancing. More...
static void	BAL_Deactivate (void)
	Deactivates voltage based balancing. More...
static void	BAL_ProcessStateCheckBalancing (BAL_STATE_REQUEST_e state_request)
	State machine subfunction to check if balancing is allowed. More...
static void	BAL_ProcessStateBalancing (BAL_STATE_REQUEST_e state_request)
	State machine subfunction to balance the battery cell. More...
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 BAL_STATE_s	bal_state
	contains the state of the contactor state machine More...

Detailed Description

Driver for the Balancing module.

Copyright

© 2010 - 2021, 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:

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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_voltage.c.

Function Documentation

BAL_ActivateBalancing()

static bool BAL_ActivateBalancing ( void  )

static

Activates voltage based balancing.

TODO

Definition at line 119 of file bal_strategy_voltage.c.

BAL_Deactivate()

static void BAL_Deactivate ( void  )

static

Deactivates voltage 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 148 of file bal_strategy_voltage.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 269 of file bal_strategy_voltage.c.

BAL_ProcessStateBalancing()

static void BAL_ProcessStateBalancing ( BAL_STATE_REQUEST_e  state_request )

static

State machine subfunction to balance the battery cell.

TODO

Definition at line 183 of file bal_strategy_voltage.c.

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BAL_ProcessStateCheckBalancing()

static void BAL_ProcessStateCheckBalancing ( BAL_STATE_REQUEST_e  state_request )

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 162 of file bal_strategy_voltage.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

stateRequest

state request to set

Returns

current state request

Definition at line 273 of file bal_strategy_voltage.c.

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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 287 of file bal_strategy_voltage.c.

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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 67 of file bal_strategy_voltage.c.

bal_state

BAL_STATE_s bal_state

static

Initial value:

= {
    .timer                  = 0,
    .stateRequest           = BAL_STATE_NO_REQUEST,
    .state                  = BAL_STATEMACH_UNINITIALIZED,
    .substate               = BAL_ENTRY,
    .lastState              = BAL_STATEMACH_UNINITIALIZED,
    .lastSubstate           = 0,
    .triggerEntry           = 0,
    .errorRequestCounter    = 0,
    .initializationFinished = STD_NOT_OK,
    .active                 = false,
    .balancingThreshold     = BAL_THRESHOLD_mV + BAL_HYSTERESIS_mV,
    .balancingAllowed       = true,
    .balancingGlobalAllowed = false,
}

contains the state of the contactor state machine

Definition at line 72 of file bal_strategy_voltage.c.