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Overview
| Topology | Battery Management System |
| IC revision | 2.0 |
Description
The AEK-POW-BMSCC is a very compact battery management system (BMS) evaluation board.It can be used in a centralized daisy chain as an intermediate node, where the first node is an AEK-POW-BMSCCTX. As an intermediate node, the AEK-POW-BMSCC can be part of a chain of up to 31 BMS nodes.Each battery node manages from 4 to 14 battery cells. The total voltage of the chain may range from 48 to 800 V.The ability to easily integrate into a system, compact dimensions, and a wide range of applications make this compact BMS system ideal for any solution enhancing battery life, efficiency, and cost effectiveness during use and operation.The small size allows for greater flexibility in battery pack installation, addressing the challenges of using a BMS in confined spaces.Its compact design allows it to fit easily, enabling more batteries to be installed within the same volume. This increases the overall battery storage, providing robust performance without adding unnecessary weight. It emphasizes the growing trend of making energy solutions more accessible and effective across different applications.The main activity of the L9963E is monitoring cells and battery node status through stack voltage measurement, cell voltage measurement, temperature measurement, and coulomb counting.Measurement and diagnostic tasks can be executed either on demand or periodically, with a programmable cycle interval.Measurement data are available for an external microcontroller to perform charge balancing and to compute the state of charge (SoC) and the state of health (SOH).The main functions of a standard BMS are monitoring and protecting the battery pack.The monitoring function is related to the measurement of the battery current, voltage, and temperature. The protection function brings the system to a safety state in case of under or overvoltage and overheating.The AEK-POW-BMSCC provides an elaborate monitoring network to sense the voltage, current, and temperature of each cell.This sensing allows elaborating the SoC of each battery cell and, consequently, the state of charge of all battery packs. The SoC allows assessing the remaining battery capacity.For maintenance reasons, it is important to monitor the SoC estimation over time. According to our algorithm for the SoC calculation, the more the SoC differs from its nominal value (that is, its value when the batteries are new), the more a cell of the battery pack risks overdischarging.The SoC evolution overtime allows asserting the state of health (SOH) of a cell or a battery pack to spot early indications that a cell is at risk of overdischarge or overcharging.The SoC of a battery cell is required to maintain its safe operation and duration during charge, discharge, and storage.The SoC cannot be measured directly and is estimated from other measurements and known parameters (such as characterization curves or look-up tables). This information on the battery cells is necessary to determine how the voltage varies according to the current, the temperature, etc., on the basis of the battery chemical composition and production lot used.The AEK-POW-BMSCC can work in a daisy chain-centralized configuration.In this configuration, a series of BMS is connected to an MCU board through an AEK-POW-BMSCCTX, used as the first node in the chain.The ISOH connectors present on the AEK-POW-BMSCCTX board allow the BMS to be connected to each other via ISO SPI communication. The board is then connected to the AEK-POW-BMSCC through the ISOL connector.The MCU communicates with the L9963T transceiver hosted on the AEK-POW-BMSCCTX through the SPI protocol. The transceiver converts these signals into ISO SPI signals to communicate with the next BMS of the chain.In the AutoDevKit ecosystem software package, we created an example demo for centralized configuration to elaborate SoC and SOH, using Li-ion batteries.Battery packs may have different SOCs, and balancing is necessary to bring them all to the same charge level. After detecting the lowest charge in the battery pack, all the other battery nodes are discharged to reach its level.The demo explains how to activate the internal MOSFETs of the L9963E, which short-circuit the cell on an external dissipation resistor to discharge it.These L9963E internal MOSFETs perform passive cell balancing. The controller can either manually control the balancing drivers or start a balancing task with a fixed duration.In the second case, called silent mode, the balancing may be programmed to continue even when the IC enters a low-power mode, to avoid unnecessary current absorption from the battery pack.The balancing function is necessary to lengthen the battery capacity and its duration.Different MCUs can be used. In our demo, we used the AEK-MCU-C4MINI1, while other ASIL-B and ASIL-D microcontrollers of the SPC58 chorus family are supported.State of charge, voltage, current, balancing status of selected chains and nodes can be monitored through a dedicated GUI.
Features
Hosts the L9963E AEC-Q100 qualified automotive multicell battery monitoring and balancing ICISOSPI interfaces to communicate with the other chain nodesVoltage monitoring of up to 14 battery cellsCurrent sensing of the entire battery pack5 configurable GPIOs, pluggable with NTCs for temperature measurementAn NTC hosted on the L9963E to sense the chip temperaturePassive cell balancingTwo connectors for easy and fast plug-and-playPackaged in a very compact size: 70 x 45 mmIncluded in the AutoDevKit ecosystem
Typical applications
- Electro-mobility
More information
Products
Order Code | Datasheet | Simulation | Downloads | Status | Product series | λDom typ.(nm) | Emitting Color | λPeak typ.(nm) | IV typ.(mcd) | VF typ.(V) | Chip Technology | 2θ50% typ.(°) | Gender | Pins | Type | Wire Section | Contact Plating | IR(A) | Working Voltage(V (AC)) | Contact Resistance(mΩ) | Packaging | Qty.(pcs) | Stranded Wire Section (AWG) | Stranded Wire Section (Metric) | C | Tol. C | VR(V (DC)) | Size | Operating Temperature | Q(%) | DF(%) | RISO | Ceramic Type | L(mm) | W(mm) | H(mm) | Fl(mm) | R | Tol. R | PRated(W) | TCR(ppm/ °C) | TCR(ppm/ °C) | VE(V) | Mount | IR(A) | PCB/Cable/Panel | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | WL-SMCW SMT Mono-color Chip LED Waterclear, 525 nm, Green | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWL-SMCW SMT Mono-color Chip LED Waterclear | Dominant Wavelength [typ.]525 nm | Emitting ColorGreen | Peak Wavelength [typ.]515 nm | Luminous Intensity [typ.]450 mcd | Forward Voltage [typ.]3.2 V | Chip TechnologyInGaN | Viewing Angle Phi 0° [typ.]140 ° | – | – | – | – | – | – | – | – | PackagingTape and Reel | Packaging Unit4000 pcs | – | – | – | – | – | Size1206 | Operating Temperature -40 °C up to +85 °C | – | – | – | – | Length3.2 mm | Width1.6 mm | Height0.68 mm | – | – | – | – | – | – | – | MountSMT | – | – | ||||
| WCAP-CSGP MLCCs 50 V(DC), –, – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWCAP-CSGP MLCCs 50 V(DC) | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | Packaging7" Tape & Reel | Packaging Unit4000 pcs | – | – | Capacitance22 pF | Capacitance±5% | Rated Voltage50 V (DC) | Size0603 | Operating Temperature -55 °C up to +125 °C | Q-Factor840 % | – | Insulation Resistance10 GΩ | Ceramic TypeNP0 Class I | Length1.6 mm | Width0.8 mm | Height0.8 mm | Pad Dimension0.4 mm | – | – | – | – | – | – | – | – | – | |||||
| WCAP-CSGP MLCCs 50 V(DC), –, – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWCAP-CSGP MLCCs 50 V(DC) | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | Packaging7" Tape & Reel | Packaging Unit4000 pcs | – | – | Capacitance33 pF | Capacitance±5% | Rated Voltage50 V (DC) | Size0603 | Operating Temperature -55 °C up to +125 °C | Q-Factor1000 % | – | Insulation Resistance10 GΩ | Ceramic TypeNP0 Class I | Length1.6 mm | Width0.8 mm | Height0.8 mm | Pad Dimension0.4 mm | – | – | – | – | – | – | – | – | – | |||||
| WCAP-CSGP MLCCs 50 V(DC), –, – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWCAP-CSGP MLCCs 50 V(DC) | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | Packaging7" Tape & Reel | Packaging Unit4000 pcs | – | – | Capacitance2.2 nF | Capacitance±10% | Rated Voltage50 V (DC) | Size0603 | Operating Temperature -55 °C up to +125 °C | – | Dissipation Factor2.5 % | Insulation Resistance10 GΩ | Ceramic TypeX7R Class II | Length1.6 mm | Width0.8 mm | Height0.8 mm | Pad Dimension0.4 mm | – | – | – | – | – | – | – | – | – | |||||
| WCAP-CSGP MLCCs 50 V(DC), –, – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWCAP-CSGP MLCCs 50 V(DC) | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | Packaging7" Tape & Reel | Packaging Unit4000 pcs | – | – | Capacitance4.7 nF | Capacitance±10% | Rated Voltage50 V (DC) | Size0603 | Operating Temperature -55 °C up to +125 °C | – | Dissipation Factor2.5 % | Insulation Resistance10 GΩ | Ceramic TypeX7R Class II | Length1.6 mm | Width0.8 mm | Height0.8 mm | Pad Dimension0.4 mm | – | – | – | – | – | – | – | – | – | |||||
| WCAP-CSGP MLCCs 50 V(DC), –, – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWCAP-CSGP MLCCs 50 V(DC) | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | Packaging7" Tape & Reel | Packaging Unit4000 pcs | – | – | Capacitance6.8 nF | Capacitance±10% | Rated Voltage50 V (DC) | Size0603 | Operating Temperature -55 °C up to +125 °C | – | Dissipation Factor2.5 % | Insulation Resistance10 GΩ | Ceramic TypeX7R Class II | Length1.6 mm | Width0.8 mm | Height0.8 mm | Pad Dimension0.4 mm | – | – | – | – | – | – | – | – | – | |||||
| WCAP-CSGP MLCCs 50 V(DC), –, – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWCAP-CSGP MLCCs 50 V(DC) | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | Packaging7" Tape & Reel | Packaging Unit4000 pcs | – | – | Capacitance10 nF | Capacitance±10% | Rated Voltage50 V (DC) | Size0603 | Operating Temperature -55 °C up to +125 °C | – | Dissipation Factor2.5 % | Insulation Resistance10 GΩ | Ceramic TypeX7R Class II | Length1.6 mm | Width0.8 mm | Height0.8 mm | Pad Dimension0.4 mm | – | – | – | – | – | – | – | – | – | |||||
| WCAP-CSGP MLCCs 50 V(DC), –, – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWCAP-CSGP MLCCs 50 V(DC) | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | Packaging7" Tape & Reel | Packaging Unit4000 pcs | – | – | Capacitance47 nF | Capacitance±10% | Rated Voltage50 V (DC) | Size0603 | Operating Temperature -55 °C up to +125 °C | – | Dissipation Factor3 % | Insulation Resistance10 GΩ | Ceramic TypeX7R Class II | Length1.6 mm | Width0.8 mm | Height0.8 mm | Pad Dimension0.4 mm | – | – | – | – | – | – | – | – | – | |||||
| WCAP-CSGP MLCCs 50 V(DC), –, – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWCAP-CSGP MLCCs 50 V(DC) | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | Packaging7" Tape & Reel | Packaging Unit4000 pcs | – | – | Capacitance68 nF | Capacitance±10% | Rated Voltage50 V (DC) | Size0603 | Operating Temperature -55 °C up to +125 °C | – | Dissipation Factor3 % | Insulation Resistance7.4 GΩ | Ceramic TypeX7R Class II | Length1.6 mm | Width0.8 mm | Height0.8 mm | Pad Dimension0.4 mm | – | – | – | – | – | – | – | – | – | |||||
| WCAP-CSGP MLCCs 25 V(DC), –, – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWCAP-CSGP MLCCs 25 V(DC) | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | Packaging7" Tape & Reel | Packaging Unit3000 pcs | – | – | Capacitance2.2 µF | Capacitance±10% | Rated Voltage25 V (DC) | Size0805 | Operating Temperature -55 °C up to +125 °C | – | Dissipation Factor10 % | Insulation Resistance0.05 GΩ | Ceramic TypeX7R Class II | Length2 mm | Width1.25 mm | Height1.25 mm | Pad Dimension0.5 mm | – | – | – | – | – | – | – | – | – | |||||
| WCAP-CSGP MLCCs 50 V(DC), –, – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWCAP-CSGP MLCCs 50 V(DC) | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | Packaging7" Tape & Reel | Packaging Unit3000 pcs | – | – | Capacitance1 µF | Capacitance±10% | Rated Voltage50 V (DC) | Size0805 | Operating Temperature -55 °C up to +125 °C | – | Dissipation Factor10 % | Insulation Resistance0.1 GΩ | Ceramic TypeX7R Class II | Length2 mm | Width1.25 mm | Height1.25 mm | Pad Dimension0.5 mm | – | – | – | – | – | – | – | – | – | |||||
| WCAP-CSGP MLCCs 50 V(DC), –, – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWCAP-CSGP MLCCs 50 V(DC) | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | Packaging7" Tape & Reel | Packaging Unit2000 pcs | – | – | Capacitance4.7 µF | Capacitance±10% | Rated Voltage50 V (DC) | Size1206 | Operating Temperature -55 °C up to +125 °C | – | Dissipation Factor10 % | Insulation Resistance0.02 GΩ | Ceramic TypeX7R Class II | Length3.2 mm | Width1.6 mm | Height1.6 mm | Pad Dimension0.5 mm | – | – | – | – | – | – | – | – | – | |||||
 | WR-WTB 2.00 mm Female Dual Row Terminal Housing w. positive locking, –, – | Simulation– | Status Activei| Production is active. Expected lifetime: >10 years. | – | – | – | – | – | – | – | GenderFemale | Pins28 | TypeTerminal Housing | – | – | – | – | – | PackagingBag | – | – | – | – | – | – | – | Operating Temperature -25 °C up to +85 °C | – | – | Insulation Resistance1000 MΩ | – | Length31.4 mm | – | – | – | – | – | – | – | – | – | – | – | PCB/Cable/PanelCable | ||||
| WR-WTB 2.00 mm Female Dual Row Terminal Housing w. positive locking, –, – | Simulation– | Status Activei| Production is active. Expected lifetime: >10 years. | – | – | – | – | – | – | – | GenderFemale | Pins30 | TypeTerminal Housing | – | – | – | – | – | PackagingBag | – | – | – | – | – | – | – | Operating Temperature -25 °C up to +85 °C | – | – | Insulation Resistance1000 MΩ | – | Length33.4 mm | – | – | – | – | – | – | – | – | – | – | – | PCB/Cable/PanelCable | ||||
 | WR-WTB 2.00 mm Male Header, –, – | Simulation– | Downloads7 files | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWR-WTB 2.00 mm Male Header | – | – | – | – | – | – | – | GenderMale | Pins28 | TypeHorizontal | – | Contact PlatingTin | Rated Current3 A | Working Voltage250 V (AC) | Contact Resistance20 mΩ | PackagingTube | – | – | – | – | – | – | – | Operating Temperature -25 °C up to +85 °C | – | – | Insulation Resistance1000 MΩ | – | Length31.4 mm | – | – | – | – | – | – | – | – | – | MountTHT | Rated Current3 A | PCB/Cable/PanelPCB | ||
| WR-WTB 2.00 mm Male Header, –, – | Simulation– | Downloads7 files | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWR-WTB 2.00 mm Male Header | – | – | – | – | – | – | – | GenderMale | Pins30 | TypeHorizontal | – | Contact PlatingTin | Rated Current3 A | Working Voltage250 V (AC) | Contact Resistance20 mΩ | PackagingTube | – | – | – | – | – | – | – | Operating Temperature -25 °C up to +85 °C | – | – | Insulation Resistance1000 MΩ | – | Length33.4 mm | – | – | – | – | – | – | – | – | – | MountTHT | Rated Current3 A | PCB/Cable/PanelPCB | ||
 | WR-WTB 2.00 mm Female Dual Row Crimp Contact, –, – | Simulation– | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWR-WTB 2.00 mm Female Dual Row Crimp Contact | – | – | – | – | – | – | – | GenderFemale | – | TypeCrimp Terminal | Wire Section 28 to 22 (AWG) 0.081 to 0.326 (mm²) | Contact PlatingTin | Rated Current3 A | Working Voltage250 V (AC) | Contact Resistance20 mΩ | PackagingBig Reel | Packaging Unit10000 pcs | Stranded Wire Section (AWG)28 to 22 (AWG) | Stranded Wire Section (Metric)0.081 to 0.326 (mm²) | – | – | – | – | Operating Temperature -25 °C up to +85 °C | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | Rated Current3 A | PCB/Cable/PanelCable | |||
| WCAP-CSGP MLCCs 100 V(DC), –, – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWCAP-CSGP MLCCs 100 V(DC) | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | Packaging7" Tape & Reel | Packaging Unit4000 pcs | – | – | Capacitance100 pF | Capacitance±10% | Rated Voltage100 V (DC) | Size0603 | Operating Temperature -55 °C up to +125 °C | – | Dissipation Factor2.5 % | Insulation Resistance10 GΩ | Ceramic TypeX7R Class II | Length1.6 mm | Width0.8 mm | Height0.8 mm | Pad Dimension0.4 mm | – | – | – | – | – | – | – | – | – | |||||
| WCAP-CSGP MLCCs 100 V(DC), –, – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWCAP-CSGP MLCCs 100 V(DC) | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | Packaging7" Tape & Reel | – | – | – | Capacitance100 nF | Capacitance±10% | Rated Voltage100 V (DC) | Size0603 | Operating Temperature -55 °C up to +125 °C | – | Dissipation Factor5 % | Insulation Resistance1 GΩ | Ceramic TypeX7R Class II | Length1.6 mm | Width0.8 mm | Height0.8 mm | Pad Dimension0.4 mm | – | – | – | – | – | – | – | – | – | |||||
| WCAP-CSGP MLCCs 100 V(DC), –, – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWCAP-CSGP MLCCs 100 V(DC) | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | Packaging7" Tape & Reel | – | – | – | Capacitance2.2 µF | Capacitance±10% | Rated Voltage100 V (DC) | Size1210 | Operating Temperature -55 °C up to +125 °C | – | Dissipation Factor5 % | Insulation Resistance0.05 GΩ | Ceramic TypeX7R Class II | Length3.2 mm | Width2.5 mm | Height2.5 mm | Pad Dimension0.75 mm | – | – | – | – | – | – | – | – | – | |||||
| WCAP-CSGP MLCCs 50 V(DC), –, – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWCAP-CSGP MLCCs 50 V(DC) | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | Packaging7" Tape & Reel | – | – | – | Capacitance220 nF | Capacitance±5% | Rated Voltage50 V (DC) | Size0603 | Operating Temperature -55 °C up to +125 °C | – | Dissipation Factor10 % | Insulation Resistance2.3 GΩ | Ceramic TypeX7R Class II | Length1.6 mm | Width0.8 mm | Height0.8 mm | Pad Dimension0.4 mm | – | – | – | – | – | – | – | – | – | |||||
 | WRIS-RSKS Thick Film Resistors, –, – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWRIS-RSKS Thick Film Resistors | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | Size0603 | Operating Temperature -55 °C up to +155 °C | – | – | – | – | Length1.6 mm | Width0.8 mm | Height0.45 mm | – | Resistance2 kΩ | Resistance±1% | Rated Power0.1 W | Temperature Coefficient of Resistance (min.)-100 ppm/ °C | Temperature Coefficient of Resistance (max.)100 ppm/ °C | Limiting Element Voltage75 V | MountSMT | – | – |