Intelligent battery sensors (IBS) 24 V

Electrics and ElectronicsEnergy management

Energy management at the highest level: The intelligent battery sensors (IBS) from HELLA do just that. They measure battery variables such as current, voltage, and temperature in 24 V electrical system environments. The measured values provide information on the state of charge (SOC), aging (SOH), as well as the expected starting capability (SOF) of the battery. The intelligent battery sensors therefore permanently monitor key parameters and provide early warning of a weak or defective battery.

The HELLA IBS for 24 V applications are designed to fit perfectly around the negative terminal of the battery. The mounting control is done via the pole terminal. As a measuring resistor for indirect current measurement, the shunt component of the battery sensors is attached to the vehicle’s load path, while the existing ground cable can simply be attached to the earthing bolt. Two different cable lug variants facilitate installation. The IBS electronics are located in a cast housing with a plug connector. Communication with the higher-level control unit related to the battery’s energy status is done via the LIN protocol.

The IBS was developed according to the technical aspects of ISO 26262:2018 in accordance with ASIL B.

Energy management at the highest level: The intelligent battery sensors (IBS) from HELLA do just that. They measure battery variables such as current, voltage, and temperature. The measured values provide information on the state of charge (SOC), aging (SOH), as well as the expected starting capability (SOF) of the battery. The intelligent battery sensors therefore permanently monitor key parameters and provide early warning of a weak or defective battery.

The HELLA IBS are designed to fit perfectly around the negative terminal of the battery. The mounting control is done via the pole terminal. As a measuring resistor for indirect current measurement, the shunt component of the battery sensors is attached to the vehicle’s load path, while the existing ground cable can simply be attached to the earthing bolt. The IBS electronics are located in a cast housing with a plug connector. Communication with the higher-level control unit related to the battery’s energy status is done via the LIN protocol.

The IBS was developed according to the technical aspects of ISO 26262:2018 in accordance with ASIL B.

The intelligent battery sensor (IBS) reliably measures battery variables such as voltage, current, and temperature. Image shows the version with right-angled cable lug.

Technical drawing of the battery sensor with right-angled cable lug.

The intelligent battery sensor (IBS) reliably measures battery variables such as voltage, current, and temperature. Image shows the version with straight cable lug.

Technical drawing of the 24 V IBS with straight cable lug.

The intelligent battery sensor (IBS) reliably measures battery variables such as voltage, current, and temperature. Image shows the version with right-angled cable lug.

Product Advantages

Accurate measurement of voltage, current, and temperature battery condition parameters
Determination of these battery condition parameters: state of charge (SOC), state of health (SOH), and state of function (SOF)
Simple electrical and mechanical integration

Video of the intelligent battery sensor 24 V

Technical Data

	QM	ASIL B
Operating voltage range	Multi-voltage (7.5 V – 32 V)	Multi-voltage (7.5 V – 32 V)
Permanent load current*	± 200 A	± 200 A
Maximum current*	± 2000 A (500 ms)	± 2000 A (500 ms)
Max. current reading available on LIN	1280 A (on LIN - Battery_Current)	2000 A (on LIN - Battery_Current)
Protection class	IP 6K9K	IP 6K9K
Operating current	≤ 16 mA (normal mode); ≤ 230 μA (sleep mode); 435 (standby mode);	≤ 20.84 mA (normal mode) ≤ 400 uA (sleep mode) ≤ 2.8 mA (standby mode)
Max. battery capacity**	255 Ah	500 Ah
Diagnosis	Hardware/Software and ITAC Number	Hardware/software and ITAC number
Protocol	LIN (2.0) or higher	LIN 2.2a (Also supports LIN 1.2, 2.0, 2.1,SAE J2602-1)

*Typical condition: Ta ≤ 80 °C; Ub = 24 V; typical ground cable: 70 mm2; approved for max. 500 ms. Other configurations available on request.
**Expandable on request.

Program Overview

ASIL Level	Variant	Part number	Packaging unit
QM	Cable lug straight	6PK 011 700-001	1
QM	Cable lug straight	6PK 011 700-007	100
QM	Cable lug right-angled	6PK 011 700-311	1
QM	Cable lug right-angled	6PK 011 700-317	100
ASIL B	Cable lug straight	6PK 021 700-001	1
ASIL B	Cable lug right-angled	on request	-