1 advanced technology reliable quality customer satisfaction copyright © calb all rights reserved....

1

Advanced TechnologyReliable QualityCustomer Satisfaction

Copyright © CALB All Rights Reserved.2012

Metal shell battery introduction

2



Topics

1 Structure of metal shell battery

2 Application and maintenance of metal shell battery

3



Metal shell upgrade:

① The shell is made of Aluminum. Much lighter, and better heat dissipation performance than plastic shell.

② The shell was shaped by entire Aluminum board.

③ The Aluminum shell covered by blue plastic film, to improve insulation performance.

Notice: Do not tear off the blue plastic film.

Separator

Positive terminal

Negative terminal

Structure of metal shell battery

4




Safety valve upgrade:

① The new safety valve is designed completely sealed. No air or liquid can pass through.

② This valve has two films. The lower film is Aluminum. It will be break to release the internal pressure. The upper file is plastic, it could block the dust and liquid to protect the Aluminum film.

Notice: Do not break the film. If the Aluminum film was broken, it can not be restored, this battery was invalidation.

5




Terminals upgrade:

① The positive terminal is made of Aluminum, the negative terminal is made of Copper.

② We plate Tin on the surface of copper to protect the negative terminal from oxidize.

③ The ring around the screw thread is used for automatic packing bus bar.

④ We put a steel threaded sleeve inside the terminals to improve the strength.

6




Plastic protector:

① The plastic protector is only design for metal shell battery.

② Plastic protector is made of PP.

③ The advantage of plastic protector. Integration modular packing method available

Improve the insulation performance

Enhance the heat dissipation performance

Convenient wiring

Notice: This protector is standard parts.

7




Ceramic separator:

① New ceramic separator is used to improve safety.

② Advantage of ceramic separator. Increase the strength, anti-penetration,

High temperature performance, anti-deformation in high temperature

Reduce the thickness, better electrical conductivity

③ Applied in CA series and metal shell series

High temperature test

Separator without ceramicShrink

Ceramic SeparatorLess shrink

8



Num Items Specifiaction PS

1 capacity 72AH

2 Min capacity 72AH

3 voltage 2.5 – 3.65V

4 IR ≤ 1mΩ 30%SOC

5Charging time

Standard ～ 4小时

Fast ～ 1小时

6 SOC platform SOC： 10% - 90%

7Working Temp.

Charging 0～ 45℃

Discharge -20～ 55℃

8 Weight 1.9 ± 0.1Kg

9 Shell Al


Specification of CAM72

9



Application and maintenance of metal shell battery

Charge① The maximum charging voltage is 3.65V.② The maximum continuous charging rate is 1C.

10




Discharge① The maximum discharging voltage is 2.5V.② The maximum continuous discharging rate is 2C.

11



10% 20% 30% 24% 50% 60% 70% 80% 90% 100%3.15

3.2

3.25

3.3

3.35

3.4

The relationship between SOC and Voltage

SOC 10% 20% 30% 40% 50% 60% 70% 80% 90% 100%

OCV 3.223 3.257 3.283 3.292 3.295 3.302 3.323 3.331 3.333 3.357


OCV vs SOC:

① The self discharge rate is less than 3% per month.

② The relationship between SOC and OCV is shown on the right.

12




Maintenance:

① The temperature should be 20 – 25 for storage. This is much better for ℃the cell.

② New cell is deliver with 30%SOC, please check the voltage per month to avoid over discharge.

③ Please cycle the cells every half year once.

13



IR

OCV

Capacity


Packing standard:There are three important factors for CALB to packing cells .

① Make the capacity of each cell very close to each other.

② Make the OCV of cells close to each other.

③ The internal resistance of each cell less than 1mΩ

14




Metal shell battery module design:

① install the plastic protector

② assemble the battery unit

③ assemble the cabinet

④ Pack the battery units

⑤ Test the power system

1 2

345

15




Emergency measurement: over charge

metal shell battery equipped with explosion-proof safety valve, when battery overcharge, internal pressure will open the safety valve, produced a lot of smoke, at this time, should take measures as follow:

① immediately shut off the power supply system and the charger.

② Put on gas mask or wet towel to prevent breathing smoke.

③ Evacuate all the people from the danger area to airy place.

④ Cooling the ESS with dry ice fire extinguisher or Alkaline metal fire extinguisher.

⑤ Contact customer service

16



Short-time over discharge will cause a little capacity lost. Recover measures should be taken as follows:

① charge the cells to 3V, using 0.1C current.② then increase the current to 0.3C.③ stop charge until 3.65V.④ repeated 3 cycles.

Long-time over discharge may cause internal short, as shown on the right. Using the repair measures above to check the cells, if the voltage can not get back to 3V, this battery will not be restore by charging.


Emergency measurement: over discharge

17



ISO 9001GB/T19001 CE UN38.3 ROHS 2006/66/EC

UL & TUV certificate are in progress.

Test Reports & Certificates


18



Thanks！CALBAdd. No.69,Binhe Road, High Tech Zone,

Luoyang, Henan, China 471003

Tel.0379-65112193

Fax.0379-65196088

www.calb.cn

1 advanced technology reliable quality customer satisfaction copyright © calb all rights reserved....

Documents

plastic shell

aluminum shell

metal shell upgrade

aluminum film

blue plastic film

advantage of plastic

new ceramic separator

advantage of ceramic