BQ76LP455A-16S 有源均衡电池管理参考设计
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Charge Flow
Switch Matrix
Cell Balancing Engine
&HOO:0RGXOH
0RGXOH:&HOO
.
.
.
EMB1499Q
PWM Controller
Switch Matrix
1
of
7
1
of
2
SPI
4
SPI
4
12/24 V
.
.
.
UART
2
-+ -+ -+ -+
Switch Matrix
EMB1428Q Gate Controller
1
of
7
SPI
4
-+
ISO
GATE
Driver
Isolated Bi-
Directional
DC-DC
bq76PL455A-Q1
(monitor and protector)
UART
GPIO
UART
SPI
Load
TMS570
/DXQFK3DGŒ
Host PC
UART
UART
Interface
With
Isolators
IO
RCLK
DAC
SPI
4
595 IO
Extender
CS
4
OE
SPI
4 3 2
WAKEUP
FAULT
2
Copyright © 2016, Texas Instruments Incorporated
1
TIDUBZ7–August 2016
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Copyright © 2016, Texas Instruments Incorporated
16-Cell Li-Ion Battery Active Balance Reference Design
TI Designs
16-Cell Li-Ion Battery Active Balance Reference Design
All trademarks are the property of their respective owners.
TI Designs
The 16-Cell Lithium-Ion Battery Active Balance
Reference Design describes a complete solution for
high current balancing in battery stacks used for high
voltage applications like xEV vehicles and energy
storage systems. The design implements active cell
balancing to compensate for both cell charge
mismatch and cell capacity mismatch and obtain the
optimal efficiency of the pack for the lifetime of the
system.
Design Resources
TIDA-00817
Design Folder
EMB1428Q Product Folder
EMB1499Q Product Folder
bq76PL455A-Q1 Product Folder
ASK Our E2E Experts
Design Features
• Based on bq76PL455A-Q1 Monitor and Protector
– Highly Accurate Monitoring of 16 Li-ion Cells
– Integrated Redundant Protector
• Engineered for High System Robustness
– 1-Mb/s Stackable Isolated Differential-UART
– Support for Open Wire Detection
• 2- to 5-A Active Balance
– Fully Isolated Transfer to External 12-V Supply
and Battery
• Capable of Compensating for Charge and Capacity
Mismatch
• Up to 16 Stackable Modules
Featured Applications
• Electric and Hybrid Electric Vehicles (EV, HEV,
PHEV, Mild Hybrid, Start/Stop)
• 48-V Systems
• Energy Storage (ESS)
• Uninterruptible Power Supplies (UPS)
An IMPORTANT NOTICE at the end of this TI reference design addresses authorized use, intellectual property matters and other
important disclaimers and information.
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