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EV Battery Pack Design and Manufacturing

EV battery system R&D, custom design, production and maintenance

PMGROW has produced custom battery packs for various EV platforms from class 7-8 buses and trucks to personal mobility vehicles
for 10+ years. Among others, battery packs for large- and medium-sized electric buses are main products today.

PMGROW produces and supplies custom battery packs that are optimized for each EV. Packs are available
with every cell form factor: pouch, prismatic and cylindrical.

STEP 1

Design
STEP 2

Design Review
STEP 3

Design Validation
STEP 4

Design Completion
STEP 5

Production Validation
STEP 6

Production

Features and Strengths

Safety
- - KATRI (Korea Automobile
  Testing & Research Institute)
  verified
- - Designed according
  to Samsung SDI’s CET
  (Customer Environment Test)
Sensing
- - Pack current and voltage
  sensing
- - Cell voltage sensing
- - Temperature and insulation
  resistance sensing
Prediction
- - SOC, SOH and remaining
  driving mileage prediction
  in detail
Monitor
- - Distant monitoring
  of battery status in real time
Charge
- - Multiple charging methods
  supported

EV Battery Pack Design and Manufacturing

	PB-EV-20-30	PB-EV-18-28-A	PB-EV-18-31-B	PB-EV-19-30

Customer	T.S. ECO ENERGY (BLK) 11m low-floor bus	JJ Motors (BAICChangzhou) 11m bus	Hanshin Motors (Zhongtong Bus, AVIC Bus) 11m Bus	Bumhan Motors (Huanghai Automobile) 11m low-floor bus
Delivery Year	2020	2018	2018	2020
Nominal Voltage (V)	604.8V (168S)	294.4V	331.2V	604.8V
Rated Capacity (Ah)	49.5Ah (1P)	94Ah	94Ah	49.5Ah(1P)
Total Energy Capacity (kWh) / DOD 100%	29.94kWh	27.67kWh	31.13kWh	29.94kWh
Dimension (mm)	1060630320 (mm)	1076mm790mm545mm	1076mm790mm545mm	1430446396 (mm)
Weight (kg)	300Kg	275kg	321kg	300kg
Cooling Method	Liquid Cooling	Forced Air Cooling	Forced Air Cooling	Forced Air Cooling
IP Rating	IP67	IP44	IP44	IP44
Note	- Samsung SDI 12s1p (Prismatic 49.5Ah Cell) - High-density cells applicable for electric buses (300kWh, 10packs)	- When supplied for electric buses, 1 set consists of 2 battery packs, as in 117kWh (2 sets) and 176kWh (3Sets)		- Samsung SDI 12s1p (Prismatic 49.5Ah Cell) - High-density cells applicable for electric buses (300kWh, 10packs)

	Slave BMS			Local Master BMS
	CAN type (Cell monitoring & MCU embedded)	UART type (Simple structure, budget model)	Integrated Type (For electric bicycles and tricycles)	Integrated Type (For electric bicycles and tricycles)

Model Name	SL10CWJBT	SL12CW	SL12CW	MA3PWJBAT
Release Date	2019.08	2019.01	2019.01	2019.08
Cell Sensing	10CH	12CH	12CH	-
Temp Sensing	1CH	2CH	2CH	5CH
Cell Balance	Passive(210mA)	Passive(90mA)	Passive(90mA)
MCU	32-bit Microcontroller	-	-	32-bit Microcontroller
Communication	CAN 2.0B(125Kbps)	UART (1Mbps)	CAN 2.0B(500Kbps) UART(115200bps)	CAN 2.0B(250Kbps) CAN 2.0B(125Kbps) RS485
Input Voltage	12V ~ 24V		12V ~ 24V	12V ~ 24V
Operation Volt.		9V ～ 65V
Operating Temp		-20℃ ~ 60℃	-20℃ ~ 60℃	-20℃ ~ 60℃
Size	128mm x 113mm	126mm x 110mm	121mm x 151mm	193mm x 143mm
Features	Cell Voltage Meas Cell Temp Meas Cell Balance Indicator LED - Operating LED - Communication LED External Port - MUC Update Port - Monitoring Port	Cell Voltage Meas. Cell Temp Meas. Cell Balance Cell Alerts - OVF / UVF - OFP / UTF - Cell △V	Main Relay Control Pre-charge Control Pack Current Meas. Pack Temp Meas. Estimate SOC Estimate SOH Protection - OVF / UVF - OFP / UTF - Cell △V	Always On Monitoring Main Relay Control Pre-charge Control Pack Current Meas. Pack Voltage Meas. Pack Temp Meas. Estimate SOC Estimate SOH Protection - OVP / UVP - OCP - OTP / UTP - Cell △V External Port - MUC Update Port - Monitoring Port