Progressive Development for 48V ESS
Xu JM Manager/Leader of Hybrid EVS Product Line
1 2 3 4 CATL Introduction
48V Hybrid EVS Planning Product Introduction Pack Level Simulation
Outline
能量密度
100
200
300 180Wh/kg
HEV
180Wh/kg
210Wh/kg
BEV
PHEV
NCM/Graphite LFP/Graphite
NCM/Si-Gr
PHEV 245Wh/kg
300Wh/kg
165Wh/kg P/E=12
400
FC 4C 185Wh/kg
FC 4C 240Wh/kg
104Wh/kg P/E=50
128Wh/kg
P/E=50 200Wh/kg
P/E=10
160Wh/kg
150Wh/kg
140Wh/kg
124Wh/kg
FC 3C
111Wh/kg
FC 3C 126Wh/kg
230Wh/kg
PHEV
1. CATL Cell Design Introduction
Abuse safety
Operational safety
Design safety Manufacture safety
Safety T echnology
Regulations and Requirements
T esting & Validation
Whole Life cycle 1. CATL Safety Design Introduction
2016
2017 2018 2020
15~30A h 48V PE=50 Air cooling Height:105mm
Charge power:＞18kW Discharge power:＞18kW Cold Cranking:＞9kW
25~40A h 48V PE=60 A ir/liquid cooling Height:100mm
Charge power:＞30kW Discharge power:＞30kW Cold Cranking:＞15kW
2019
6~10Ah
15~30Ah
25~40Ah
10A h 48V PE=50 A ir cooling
Charge power:＞18kW Discharge power:＞18kW Cold Cranking:＞9kW
Gen Ⅰ
Start/Stop
Boost acceleration
Gen Ⅱ
Start/Stop
Boost acceleration Electrification
Gen Ⅲ
Start/Stop
Boost acceleration Electrification Drive main motor
2. 48 EVS Development Planning
3. Pack Performance Introduction
No. Performance Requirement CA TL 48V EVS
1 Standard voltage/V 48V
2 Operation voltage range/V 35-53
3 Available energy/Wh ≥175
4 Max discharge power( HPPC @10s,30%SOC,BOL)/kW 19.7
5 Max charge power( HPPC @10s,70%SOC,BOL) /kW 18.5
6 Vibrate protection QC /T 743-2006 GB/T 31467.3-2015
7 Fault diagnosis UDS protocol
8 Balancing Passive balancing
9 Swing window 30-70% SOC
Cell Specifications
10A h cell
Capacity (Ah, 1C @25℃) 10 Cathode active material NCM Anode active material
Carbon Dimension (without terminal)
Thickness (mm)
17.5 Width (mm) 120 Height (mm)
85
Continuous operation voltage
(V, Upper limit/Normal/Lower limit)
4.1/3.6/2.7
Nominal energy (Wh, 1C-rate @25℃) 36 Specific power (W/kg, @50%SOC, 25℃, HPPC) 4484 10s Peak discharge power (W, @50%SOC,25℃) 1104 10s Peak charge power (W, @50%SOC,25℃) 1374
GBT31485-2015
Modification of VDA standard size
Easy for modulation
Space for Power/energy update
3. 48V NCM Cell Development
A buse Test
EUCA R Level
Nail Penetration Level 4 Short-circuit Level 2 Over-charge Level 2 Over-discharge Level 2 Crush Level 2 Drop
Level 0
ASIC
Hardware
Product Platform
2016Q1
2016Q4
2017Q4 2018Q4
Low Cost
2021Q1
2019Q4 Software
Battery Core
Platform1
SoC ±5% SoH/SoL
Integrated DC/DC
Function Safety
Derivative1
Platform2
Derivative2
ASpice Level 3
ASIL D
ASpice Level 2
ASIL C ASIL C ASIL C
ASpice Level 2
ASpice Level 2
SoC ±5% SoH
48V Power Supply
12V Power Supply
CAN FD Low Power
2. 48V EVS Development Planning
Battery: 10Ah NMC
Application in the project:
▪ 5 main function modules: state calculation, energy management, battery protection
and data logging.
▪SOC evaluation function fulfill the
application requirements (Less than 5% ). ▪Battery protection work properly and prevent the abuse to the battery.
35
40
45
50
55
60
15011001150120012501
CAN1_SOC
Actual SOC
act [package] SOC [SOC]
Battery Model
Meas ured
Current
Time
Input
Terminal
Voltage
Meaus red
Voltage
Input
<<overwrite>>
Extended Kalman
Filter
Corrected
SOC
3. Product Performance Introduction
More than 200000km equivalent driving range can be expected
Good power retention
Module standardization related with physical location mounted in vehicle
Weight problem
Thermal management Problem Sealing level requirement
BMS
Prismatic
Module
5. Issues Still Open
Pack
DCR and DCR growth design during whole cycle life Safety and cost trade off issues for low voltage application Life prediction methodology
Thanks
Web: http://www.CA
E-mail: marketing@CA 。