BQ78412
Ladezustandsanzeige für Pb-Säure-Batterien mit Laufzeitanzeige
Eine neuere Version dieses Produkts ist verfügbar
BQ78412
- Designed for Use with 12-V Lead Acid Batteries in Consumer UPS Systems
- Programmable Cell Models for Enhanced Pb-Acid Gas Gauging Performance
- Provides 10-LED Bar Graph of Run-Time Remaining During Discharge and
% Capacity During Charge - Can Be Easily Integrated Into Battery Cover
- Works with Pb-Acid Batteries Up to 327 Ah
- Records Cumulative Usage Data Internally for Warranty Return Analysis
- On-Chip Temperature Sensor
- Data Interface for Retrieving Warranty Information
- Fully Programmable Features and Thresholds via UART Serial Interface
- State-of-Health (SoH) Determination and Status Reporting
- Includes Configurable Audible Indicator for Low-Capacity, Low-Voltage,
and Overvoltage Warnings - Addressable Commands for Use in Multi-Battery Systems
- Optional Infra-Red Communications Interface
- APPLICATIONS
- Stand-Alone Uninterruptible Power Supplies
- 12-V Pb-Acid Battery Monitors
- Battery Warranty Data Logging Equipment
The bq78412 Pb-Acid Battery State-of-Charge (SoC) Indicator with Run-Time Display is a complete stand-alone battery gas-gauge solution designed for single 12V Pb-Acid batteries. The bq78412 displays remaining Run-Time-To-Empty during discharge and Percent (%) capacity during charge using a 10-LED (light-emitting diode) bar graph.
The bq78412 monitors battery voltage, current, and ambient temperature to calculate state-of-charge and determine remaining runtime-to-empty. Measured values can be recorded and tracked for later retrieval for warranty purposes.
Programmable cell models allow the bq78412 to be customized to a variety of Pb-Acid formulations and capacities.
Current measurements and Coulomb-counting for gas-gauging are also automatically performed by the bq78412. Current measurements use a small value sense resistor placed in the negative power path and calibrated in-circuit. This allows the precise, continuous, real-time calculation of battery capacity and run-time-to-empty values.
Temperature sensing augments gas-gauge and capacity information using a firmware algorithm to compensate for the temperature effects on capacity.
A serial port is available for configuring various programmable parameters including cell models, calibration values, serial number and date of manufacture. The serial port can operate an infra-red (IR) interface to allow connector-less data acquisition. The bq78412 is easily configurable, is fully programmed and requires no algorithm or firmware development
Technische Dokumentation
Typ | Titel | Datum | ||
---|---|---|---|---|
* | Data sheet | Pb-Acid Battery State-of-Charge Indicator datasheet | 04 Aug 2010 | |
User guide | BQ78412EVM Board Quick-Start Guide | 04 Mai 2011 | ||
User guide | BQ78412 Application Programming Interface | 20 Jan 2011 |
Design und Entwicklung
Weitere Bedingungen oder erforderliche Ressourcen enthält gegebenenfalls die Detailseite, die Sie durch Klicken auf einen der unten stehenden Titel erreichen.
SLUC257 — Default Chemistry File
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Bestellen & Qualität
- RoHS
- REACH
- Bausteinkennzeichnung
- Blei-Finish/Ball-Material
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- Materialinhalt
- Qualifikationszusammenfassung
- Kontinuierliches Zuverlässigkeitsmonitoring
- Werksstandort
- Montagestandort
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