Configuration of the battery system (e.g., number of battery modules, battery cells, temperature sensors) More...

#include "general.h"

Include dependency graph for battery_system_cfg.h:

This graph shows which files directly or indirectly include this file:

Macros
#define	POSITIVE_DISCHARGE_CURRENT (true)

#define	BS_NR_OF_STRINGS (1u)
	Number of parallel strings in the battery pack. More...

#define	BS_NR_OF_MODULES_PER_STRING (1u)
	number of modules in a string More...

#define	BS_NR_OF_CELL_BLOCKS_PER_MODULE (14u)
	number of cells per module More...

#define	BS_NR_OF_PARALLEL_CELLS_PER_MODULE (1u)
	number of battery cells in a parallel cell connection per battery module More...

#define	BS_MAX_SUPPORTED_CELLS (14u)
	Defines the maximal number of supported cells per module. More...

#define	BS_BALANCING_RESISTANCE_ohm (100.0)

#define	BS_NR_OF_GPIOS_PER_MODULE (8u)
	Number of GPIOs on the LTC IC. More...

#define	BS_NR_OF_TEMP_SENSORS_PER_MODULE (8u)
	number of temperature sensors per battery module More...

#define	BS_NR_OF_CELL_BLOCKS_PER_STRING (BS_NR_OF_MODULES_PER_STRING * BS_NR_OF_CELL_BLOCKS_PER_MODULE)

#define	BS_NR_OF_TEMP_SENSORS_PER_STRING (BS_NR_OF_MODULES_PER_STRING * BS_NR_OF_TEMP_SENSORS_PER_MODULE)

#define	BS_NR_OF_TEMP_SENSORS (BS_NR_OF_TEMP_SENSORS_PER_STRING * BS_NR_OF_STRINGS)

#define	BS_NR_OF_TEMP_SENSORS_ON_SADC0 (3u)

#define	BS_NR_OF_TEMP_SENSORS_ON_SADC1 (3u)

#define	CURRENT_SENSOR_PRESENT (false)

#define	CURRENT_SENSOR_ISABELLENHUETTE_CYCLIC

#define	BS_CURRENT_MEASUREMENT_RESPONSE_TIMEOUT_MS (200u)

#define	BS_COULOMB_COUNTING_MEASUREMENT_RESPONSE_TIMEOUT_MS (2000u)

#define	BS_ENERGY_COUNTING_MEASUREMENT_RESPONSE_TIMEOUT_MS (2000u)

#define	BS_MAIN_CONTACTORS_MAXIMUM_BREAK_CURRENT_mA (500000)
	Maximum break current of main contactors. More...

#define	BS_MAIN_FUSE_MAXIMUM_TRIGGER_DURATION_ms (30000u)
	Maximum fuse trigger duration. More...

#define	BS_MAXIMUM_STRING_CURRENT_mA (10000u)
	Maximum string current limit in mA that is used in the SOA module to check for string overcurrent. More...

#define	BS_MAXIMUM_PACK_CURRENT_mA (10000u * BS_NR_OF_STRINGS)
	Maximum pack current limit in mA that is used in the SOA module to check for pack overcurrent. More...

#define	BS_IGNORE_INTERLOCK_FEEDBACK (false)
	Define if interlock feedback should be discarded or not. More...

#define	CHECK_CAN_TIMING (true)

#define	BALANCING_DEFAULT_INACTIVE (true)

#define	BMS_OPEN_CONTACTORS_ON_INSULATION_ERROR (false)
	Defines behaviour if an insulation error is detected. More...

#define	BS_NR_OF_VOLTAGES_FROM_CURRENT_SENSOR (3u)
	number of high voltage inputs measured by current sensors (like IVT-MOD) More...

#define	BS_NR_OF_VOLTAGES_FROM_MCU_ADC (2)
	number of voltages measured by MCU internal ADC More...

#define	BS_NR_OF_CONTACTORS_OUTSIDE_STRINGS (1u)

#define	BS_NR_OF_CONTACTORS ((2u * BS_NR_OF_STRINGS) + BS_NR_OF_CONTACTORS_OUTSIDE_STRINGS)

#define	BS_REST_CURRENT_mA (200)
	current threshold for determing rest state of battery. If absolute current is below this limit value the battery is resting. More...

#define	BS_RELAXATION_PERIOD_10ms (60000u)
	Wait time in 10ms before battery system is at rest. Balancing for example only starts if battery system is at rest. More...

#define	BS_CS_THRESHOLD_NO_CURRENT_mA (200u)
	current sensor threshold for 0 current in mA as the sensor has a jitter. More...

#define	BS_MAX_VOLTAGE_DROP_OVER_FUSE_mV (500)
	Maximum voltage drop over fuse. More...

#define	BS_CHECK_FUSE_PLACED_IN_NORMAL_PATH (true)
	TODO. More...

#define	BS_CHECK_FUSE_PLACED_IN_CHARGE_PATH (false)
	TODO. More...

#define	BS_STANDBY_PERIODIC_OPEN_WIRE_CHECK (false)

#define	BS_STANDBY_OPEN_WIRE_PERIOD_ms (600000)

#define	BS_NORMAL_PERIODIC_OPEN_WIRE_CHECK (false)

#define	BS_NORMAL_OPEN_WIRE_PERIOD_ms (600000)

#define	BS_CHARGE_PERIODIC_OPEN_WIRE_CHECK (false)

#define	BS_CHARGE_OPEN_WIRE_PERIOD_ms (600000)

#define	BS_ERROR_OPEN_WIRE_PERIOD_ms (30000)

Enumerations
enum	BS_STRING_PRECHARGE_PRESENT_e { BS_STRING_WITH_PRECHARGE , BS_STRING_WITHOUT_PRECHARGE }

enum	BS_STRING_ID_e { BS_STRING0 = 0u , BS_STRING1 = 1u , BS_STRING2 = 2u , BS_STRING_MAX = 3u }

Functions
	FAS_STATIC_ASSERT ((BS_NR_OF_STRINGS<=(uint8_t) UINT8_MAX), "This code assumes BS_NR_OF_STRINGS fits into uint8_t")

Variables
BS_STRING_PRECHARGE_PRESENT_e	bs_stringsWithPrecharge [BS_NR_OF_STRINGS]

Detailed Description

Configuration of the battery system (e.g., number of battery modules, battery cells, temperature sensors)

Copyright: © 2010 - 2022, Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V. All rights reserved.

SPDX-License-Identifier: BSD-3-Clause

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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:

″This product uses parts of foxBMS®″
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Author: foxBMS Team

Date: 2019-12-10 (date of creation)

Updated: 2022-10-27 (date of last update)

Version: v1.4.1

Prefix: BS

This files contains basic macros of the battery system in order to derive needed inputs in other parts of the software. These macros are all depended on the hardware.

Definition in file battery_system_cfg.h.

Macro Definition Documentation

◆ BALANCING_DEFAULT_INACTIVE

#define BALANCING_DEFAULT_INACTIVE (true)

If set to true, balancing is deactivated completely.
- If set to false, foxBMS checks when balancing must be done and activates it accordingly.

Definition at line 275 of file battery_system_cfg.h.

◆ BMS_OPEN_CONTACTORS_ON_INSULATION_ERROR

#define BMS_OPEN_CONTACTORS_ON_INSULATION_ERROR (false)

Defines behaviour if an insulation error is detected.

If set to true: contactors will be opened
- If set to false: contactors will NOT be opened

Definition at line 283 of file battery_system_cfg.h.

◆ BS_BALANCING_RESISTANCE_ohm

#define BS_BALANCING_RESISTANCE_ohm (100.0)

Value of the balancing resistors on the slave-board

Definition at line 155 of file battery_system_cfg.h.

◆ BS_CHECK_FUSE_PLACED_IN_CHARGE_PATH

#define BS_CHECK_FUSE_PLACED_IN_CHARGE_PATH (false)

TODO.

Set to true if fuse in CHARGE path should be checked. This can only be done if one dedicated HV measurement is used to monitor voltage directly after the fuse. Then a voltage difference between V_bat and V_fuse indicates a tripped fuse.

V_bat +---—+ V_fuse Precharge/Charge+ contactor --—+—| FUSE |--—+---------—/ --------------— +---—+

Definition at line 363 of file battery_system_cfg.h.

◆ BS_CHECK_FUSE_PLACED_IN_NORMAL_PATH

#define BS_CHECK_FUSE_PLACED_IN_NORMAL_PATH (true)

TODO.

Set to true if fuse in NORMAL path should be checked. This can only be done if one dedicated HV measurement is used to monitor the voltage directly after the fuse. Then a voltage difference between V_bat and V_fuse indicates a tripped fuse.

V_bat +---—+ V_fuse Precharge/Main+ contactor --—+—| FUSE |--—+---------—/ --------------— +---—+

Definition at line 350 of file battery_system_cfg.h.

◆ BS_COULOMB_COUNTING_MEASUREMENT_RESPONSE_TIMEOUT_MS

#define BS_COULOMB_COUNTING_MEASUREMENT_RESPONSE_TIMEOUT_MS (2000u)

Delay in ms after which it is considered the coulomb counting is not responding anymore.

Definition at line 210 of file battery_system_cfg.h.

◆ BS_CS_THRESHOLD_NO_CURRENT_mA

#define BS_CS_THRESHOLD_NO_CURRENT_mA (200u)

current sensor threshold for 0 current in mA as the sensor has a jitter.

Definition at line 324 of file battery_system_cfg.h.

◆ BS_CURRENT_MEASUREMENT_RESPONSE_TIMEOUT_MS

#define BS_CURRENT_MEASUREMENT_RESPONSE_TIMEOUT_MS (200u)

Delay in ms after which it is considered the current measurement is not responding anymore.

Definition at line 207 of file battery_system_cfg.h.

◆ BS_ENERGY_COUNTING_MEASUREMENT_RESPONSE_TIMEOUT_MS

#define BS_ENERGY_COUNTING_MEASUREMENT_RESPONSE_TIMEOUT_MS (2000u)

Delay in ms after which it is considered the energy counting is not responding anymore.

Definition at line 213 of file battery_system_cfg.h.

◆ BS_IGNORE_INTERLOCK_FEEDBACK

#define BS_IGNORE_INTERLOCK_FEEDBACK (false)

Define if interlock feedback should be discarded or not.

True: interlock feedback will be discarded False: interlock feedback will evaluated

Definition at line 261 of file battery_system_cfg.h.

◆ BS_MAIN_CONTACTORS_MAXIMUM_BREAK_CURRENT_mA

#define BS_MAIN_CONTACTORS_MAXIMUM_BREAK_CURRENT_mA (500000)

Maximum break current of main contactors.

The contacts of the main contactors can be welded, when attempting to interrupt the current flow while a current higher than the maximum break current of the contactor is flowing.

Thus, the contactors will not be opened if the floating current is above this value. The fuse should trigger to interrupt current flows above this value.

Definition at line 227 of file battery_system_cfg.h.

◆ BS_MAIN_FUSE_MAXIMUM_TRIGGER_DURATION_ms

#define BS_MAIN_FUSE_MAXIMUM_TRIGGER_DURATION_ms (30000u)

Maximum fuse trigger duration.

If the current is above BS_MAIN_CONTACTORS_MAXIMUM_BREAK_CURRENT_mA, the BMS state machine will wait this time until the fuse triggers so that the current will be interrupted by the fuse and not the contactors. After this time, the BMS will nevertheless try to open the contactors.

Definition at line 237 of file battery_system_cfg.h.

◆ BS_MAX_SUPPORTED_CELLS

#define BS_MAX_SUPPORTED_CELLS (14u)

Defines the maximal number of supported cells per module.

◆ BS_MAX_VOLTAGE_DROP_OVER_FUSE_mV

#define BS_MAX_VOLTAGE_DROP_OVER_FUSE_mV (500)

Maximum voltage drop over fuse.

If the measured voltage difference between battery voltage voltage after fuse is larger than this value. It can be concluded, that the fuse has tripped. The voltage difference can be estimated by the maximum current and the resistance. For a Cooper Bussmann 1000A fuse the voltage drop can be estimated to: I_max = 1000A and P_loss = 206W -> voltage drop at 1000A roughly 206mV -> select 500mV because of measurement inaccuracies

Definition at line 337 of file battery_system_cfg.h.

◆ BS_MAXIMUM_PACK_CURRENT_mA

#define BS_MAXIMUM_PACK_CURRENT_mA (10000u * BS_NR_OF_STRINGS)

Maximum pack current limit in mA that is used in the SOA module to check for pack overcurrent.

When maximum safety limit (MSL) is violated, error state is requested and contactors will open.

Definition at line 253 of file battery_system_cfg.h.

◆ BS_MAXIMUM_STRING_CURRENT_mA

#define BS_MAXIMUM_STRING_CURRENT_mA (10000u)

Maximum string current limit in mA that is used in the SOA module to check for string overcurrent.

When maximum safety limit (MSL) is violated, error state is requested and contactors will open.

Definition at line 245 of file battery_system_cfg.h.

◆ BS_NR_OF_CELL_BLOCKS_PER_MODULE

#define BS_NR_OF_CELL_BLOCKS_PER_MODULE (14u)

number of cells per module

number of cells per module, where parallel cells are counted as one cell block. For details see Naming Conventions.

Type: uint

Definition at line 121 of file battery_system_cfg.h.

◆ BS_NR_OF_CELL_BLOCKS_PER_STRING

#define BS_NR_OF_CELL_BLOCKS_PER_STRING (BS_NR_OF_MODULES_PER_STRING * BS_NR_OF_CELL_BLOCKS_PER_MODULE)

number of battery cells in the system

Definition at line 179 of file battery_system_cfg.h.

◆ BS_NR_OF_CONTACTORS

#define BS_NR_OF_CONTACTORS ((2u * BS_NR_OF_STRINGS) + BS_NR_OF_CONTACTORS_OUTSIDE_STRINGS)

Total number of contactors in system:

Two contactors per string (string+ and string-)
One optional precharge contactor for each string

Definition at line 306 of file battery_system_cfg.h.

◆ BS_NR_OF_CONTACTORS_OUTSIDE_STRINGS

#define BS_NR_OF_CONTACTORS_OUTSIDE_STRINGS (1u)

Number of contactors in addition to string contactors (e.g., PRECHARGE).

Definition at line 301 of file battery_system_cfg.h.

◆ BS_NR_OF_GPIOS_PER_MODULE

#define BS_NR_OF_GPIOS_PER_MODULE (8u)

Number of GPIOs on the LTC IC.

5 for 12 cell version
- 9 for 18 cell version

Definition at line 166 of file battery_system_cfg.h.

◆ BS_NR_OF_MODULES_PER_STRING

#define BS_NR_OF_MODULES_PER_STRING (1u)

number of modules in a string

For details see Naming Conventions.

Type: uint

Definition at line 110 of file battery_system_cfg.h.

◆ BS_NR_OF_PARALLEL_CELLS_PER_MODULE

#define BS_NR_OF_PARALLEL_CELLS_PER_MODULE (1u)

number of battery cells in a parallel cell connection per battery module

For details see Naming Conventions.

Type: uint

Definition at line 131 of file battery_system_cfg.h.

◆ BS_NR_OF_STRINGS

#define BS_NR_OF_STRINGS (1u)

Number of parallel strings in the battery pack.

For details see Naming Conventions. Implementation detail: The number of parallel strings cannot exceed GEN_REPEAT_MAXIMUM_REPETITIONS unless the implementation of the repetition macro is adapted.

Type: uint

Definition at line 96 of file battery_system_cfg.h.

◆ BS_NR_OF_TEMP_SENSORS

#define BS_NR_OF_TEMP_SENSORS (BS_NR_OF_TEMP_SENSORS_PER_STRING * BS_NR_OF_STRINGS)

number of temperature sensors in the battery system

Definition at line 183 of file battery_system_cfg.h.

◆ BS_NR_OF_TEMP_SENSORS_ON_SADC0

#define BS_NR_OF_TEMP_SENSORS_ON_SADC0 (3u)

number of temperature sensors on each ADC0 channel of the slave-board

Definition at line 186 of file battery_system_cfg.h.

◆ BS_NR_OF_TEMP_SENSORS_ON_SADC1

#define BS_NR_OF_TEMP_SENSORS_ON_SADC1 (3u)

number of temperature sensors on each ADC1 channel of the slave-board

Definition at line 188 of file battery_system_cfg.h.

◆ BS_NR_OF_TEMP_SENSORS_PER_MODULE

#define BS_NR_OF_TEMP_SENSORS_PER_MODULE (8u)

number of temperature sensors per battery module

Type: int

Definition at line 176 of file battery_system_cfg.h.

◆ BS_NR_OF_TEMP_SENSORS_PER_STRING

#define BS_NR_OF_TEMP_SENSORS_PER_STRING (BS_NR_OF_MODULES_PER_STRING * BS_NR_OF_TEMP_SENSORS_PER_MODULE)

number of temperature sensors in a string

Definition at line 181 of file battery_system_cfg.h.

◆ BS_NR_OF_VOLTAGES_FROM_CURRENT_SENSOR

#define BS_NR_OF_VOLTAGES_FROM_CURRENT_SENSOR (3u)

number of high voltage inputs measured by current sensors (like IVT-MOD)

Type: int

Definition at line 291 of file battery_system_cfg.h.

◆ BS_NR_OF_VOLTAGES_FROM_MCU_ADC

#define BS_NR_OF_VOLTAGES_FROM_MCU_ADC (2)

number of voltages measured by MCU internal ADC

Type: int

Definition at line 298 of file battery_system_cfg.h.

◆ BS_RELAXATION_PERIOD_10ms

#define BS_RELAXATION_PERIOD_10ms (60000u)

Wait time in 10ms before battery system is at rest. Balancing for example only starts if battery system is at rest.

Definition at line 318 of file battery_system_cfg.h.

◆ BS_REST_CURRENT_mA

#define BS_REST_CURRENT_mA (200)

current threshold for determing rest state of battery. If absolute current is below this limit value the battery is resting.

Definition at line 312 of file battery_system_cfg.h.

◆ CHECK_CAN_TIMING

#define CHECK_CAN_TIMING (true)

If set to false, foxBMS does not check CAN timing.
- If set to true, foxBMS checks CAN timing. A valid request must come every 100ms, within the 95-150ms window.

Definition at line 268 of file battery_system_cfg.h.

◆ CURRENT_SENSOR_ISABELLENHUETTE_CYCLIC

#define CURRENT_SENSOR_ISABELLENHUETTE_CYCLIC

defines if the Isabellenhuette current sensor is used in cyclic or triggered mode

Definition at line 203 of file battery_system_cfg.h.

◆ CURRENT_SENSOR_PRESENT

#define CURRENT_SENSOR_PRESENT (false)

If set to false, foxBMS does not check for the presence of a current sensor.
- If set to true, foxBMS checks for the presence of a current sensor. If sensor stops responding during runtime, an error is raised.

Definition at line 197 of file battery_system_cfg.h.

◆ POSITIVE_DISCHARGE_CURRENT

#define POSITIVE_DISCHARGE_CURRENT (true)

Define if discharge current is seen as positive or negative

Definition at line 83 of file battery_system_cfg.h.

Enumeration Type Documentation

◆ BS_STRING_ID_e

enum BS_STRING_ID_e

Symbolic identifiers for strings.

Enumerator
BS_STRING0
BS_STRING1
BS_STRING2
BS_STRING_MAX

Definition at line 75 of file battery_system_cfg.h.

◆ BS_STRING_PRECHARGE_PRESENT_e

enum BS_STRING_PRECHARGE_PRESENT_e

Symbolic identifiers for strings with precharge

Enumerator
BS_STRING_WITH_PRECHARGE
BS_STRING_WITHOUT_PRECHARGE

Definition at line 69 of file battery_system_cfg.h.

Function Documentation

◆ FAS_STATIC_ASSERT()

FAS_STATIC_ASSERT	(	(BS_NR_OF_STRINGS<=(uint8_t) UINT8_MAX)	,
		"This code assumes BS_NR_OF_STRINGS fits into uint8_t"
	)

Variable Documentation

◆ bs_stringsWithPrecharge

BS_STRING_PRECHARGE_PRESENT_e bs_stringsWithPrecharge[BS_NR_OF_STRINGS]

extern

Precharge presence of not for each string

Definition at line 65 of file battery_system_cfg.c.

Macros

Enumerations

Functions

Variables