PRODUCTS
The DNB1101 is a single Li-ion cell supervisor (Linx) IC that provides electrochemical impedance spectroscopy (EIS) for each individual cell or a group of cells in parallel. The integrated die temperature sensors can be used for cell temperature measurement. Additional thermo-couples/NTCs are no longer required. The DNB1101 measures the cell impedance based on a patented circuit technology, enabling a new approach of indicating the internal cell temperature. It also enables on-line state-of-health estimation, in combination with algorithms running on the pack controller. The IC integrates separate (redundant) ADCs for both voltage and temperature measurement. With a differential daisy chain, the cell measurement information is transmitted to the pack controller. The first IC in the chain translates a standard SPI signal to the daisy chain differential signal.
Key Features
Voltage measurement accuracy: ±2 mV
Battery cell voltage range: 1.9 - 5.5 V
Die temperature sensor accuracy: ±2.5 K
Passive balancing with diagnostics
Low-ohmic cells EIS (impedance spectroscopy)
Daisy chain communication speed: 1 Mbps
Temperature range: -40⁰C to 105⁰C
Applications
On-grid energy storage systems
Renewable energy storage systems
Telecom base station backup power supplies
Data center backup power supplies
Silicon Note
Application Note
| Voltage measurement accuracy +/- 2mV | Cell measurement voltage range 1.9V to 5.5V |
| The precision of temperature sensor inside the chip is +/- 2.5K | Daisy chain communication rate 1Mbps |
| Operating temperature range -40 degrees to 105 degrees | Impedance monitoring frequency range 7.5mHz to 7.8kHz |
| The maximum balance current is 200mA |
Hardware
· 4LINX_FR4_V2.0B
· 1LINX_FPC_V2.0B
· PC_V3.1B
Software
· GUI
· Firmware reference code
Live: New energy lithium cell battery management scheme with impedance detection function
This seminar will introduce Datang NXP Semiconductors's single cell based battery management solution:
- This solution can bring customers more accurate temperature and voltage sampling;
- Additional impedance detection function provided to customers to escort the safety of new energy vehicle power battery;
- The battery management chip DNB1168 in this solution, its core components are 100% domestic, the chip is integrated with the ac impedance monitoring of the cell, the chip is integrated with the temperature sensor, and the circuit of the highest safety level ASIL-D.
Live: DNB1168 -- Single cell battery management System chip solution
Function overview of single cell monitoring chip DNB1168
EDOM Technology Co Ltd
Singapore Branch Block 4102 , Ang Mo Kio Avenue 10.#07-08 Techplace !, Singapore
(65)63465198-102
Powertek Group Co.,Ltd
2101-02,Office Tower 2,Century Link,
No.1196 Century Avenue,Pudong New Area,Shanghai,China
13916656520
Unique Semiconductor Group Co.,Ltd
Rm1008, No.1717, North Sichuan Road, Shanghai
(86)21-51876636-296 mark_chen@yuyangsemi.com
