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...
BAL_STATEMACH_e	BAL_GetState (void)
DATA_BLOCK_BALANCING_CONTROL_s *	TEST_BAL_GetBalancingControl (void)
BAL_STATE_s *	TEST_BAL_GetBalancingState (void)

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.

Copyright

© 2010 - 2022, 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.

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Author

foxBMS Team

Date

2020-05-29 (date of creation)

Updated

2022-10-27 (date of last update)

Version

v1.4.1

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 122 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 252 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 266 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 159 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 308 of file bal_strategy_history.c.

BAL_GetState()

BAL_STATEMACH_e BAL_GetState

(

void

)

Definition at line 374 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 212 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 173 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

stateRequest

state request to set

Returns

current state request

Definition at line 312 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 326 of file bal_strategy_history.c.

TEST_BAL_GetBalancingControl()

DATA_BLOCK_BALANCING_CONTROL_s* TEST_BAL_GetBalancingControl

(

void

)

Definition at line 381 of file bal_strategy_history.c.

TEST_BAL_GetBalancingState()

BAL_STATE_s* TEST_BAL_GetBalancingState

(

void

)

Definition at line 385 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 69 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 71 of file bal_strategy_history.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_DEFAULT_THRESHOLD_mV + BAL_HYSTERESIS_mV,
    .balancingAllowed       = true,
    .balancingGlobalAllowed = false,
}

contains the state of the contactor state machine

Definition at line 74 of file bal_strategy_history.c.