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13节串联,48 V锂离子电池组高精度、50uA待机电流的参考设计方案
资料介绍
应用场合
•电动自行车电池组
•电动滑板车电池组
•割草机器人电池组
•UPS锂离子电池组
•其他超过10节的电池组应用
部分文件列表
文件名 | 大小 |
tidueg7b.pdf | 7M |
部分页面预览
(完整内容请下载后查看)Design Guide: TIDA-010030
Accurate gauging and 50-µA standby current, 13S, 48-V
Li-Ion battery pack reference design
Description
Features
•
2% battery pack SOC accuracy at room
temperature.
This reference design is a low standby and ship mode
current consumption and high SOC gauging accuracy
13S, 48-V Li-ion battery pack design. It monitors each
cell voltage, pack current and temperature with high
accuracy and protects the Li-ion battery pack against
overvoltage, undervoltage, over temperature and over
current situations. The SOC gauging, based on
bq34z100-g1, takes advantage of an impedance
tracking algorithm and achieves as high as 2%
accuracy at room temperature. Through a well-
designed auxiliary power supply strategy and high
efficiency, low quiescent current DC-DC converter
LM5164, this design achieves 50-μA stand-by and 5-
μA ship mode consumption, saving more energy and
allowing longer shipping time and idle time. This
reference design was implemented for a 2-layer PCB.
Also, this design supports a well running firmware,
which helps to decrease product research time.
•
•
•
50-µA current consumption when in standby mode
5-µA current consumption when in shipping mode
Robust and programmable protection, including:
cell over voltage, cell under voltage, overcurrent
discharge, short circuit, overtemperature and
undertemperature
•
•
Support 100-mA cell balancing
High-side charging and discharging MOSFETs and
support pre-discharge function
Applications
•
•
•
•
•
e-bike battery pack
e-scooter battery pack
Mowing robot battery pack
UPS Li-Ion battery pack
Resources
Other over 10S battery pack applications
Design Folder
Product Folder
Product Folder
Product Folder
Product Folder
Product Folder
Product Folder
Charge/Discharge
Power Stage
CSD19536KTT
+3
CSD19536KTT
+3
PACK+
BAT+
Cell 13
BQ7718
BQ76200
Communication
TPD2E007
Cell 10
Opto
Cell
Cell
9
6
THVD1500
ISO1042
BQ7718
BQ7718
I/O
I/O
T1
ALERT
AFE
w/ CB
BQ76940
MCU
MSP430FR2155DBT
Cell
Cell
5
1
I/O
Iso_5V
I2C
TLV70450
SN6501
LM5164
TLV70433
I2
C
BAT+
CB
BAT+
MOSFETs
Fuel Gauge
BQ34Z100-G1
Auxillary Power Supply
Battery Management
Controller
Monitor/Protection/Cell-Balancing
PACK-
BAT-
1
February 2019
Accurate gauging and 50-µA standby current, 13S, 48-V Li-Ion battery pack
reference design
Copyright © 2018–2019, Texas Instruments Incorporated
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