Hochleistungs-Lithium-Ionen-Akku der Serie 60 F602000C-50Ah für die Notstromversorgung

No.

Item

Specification

1

Nominal Capacity

50Ah ,0.5 C discharging（25±2℃）

2

Nominal Voltage

3.2V

3

Charge Ending Voltage

3.65V

4

Discharge Ending

Voltage

2.5V（≥0℃）

2.0V（< 0℃）

5

Standard

Charging

Method

25±2℃ 0.5C constant current charge to 3.65V, then constant voltage

3.65V charge till charged current declines to ≤ 0.05C

6

Standard Discharging

Method

25±2℃ 0.5C constant current discharge to 2.5V

7

Max.Pulse Charging

Current

2C (15℃～45℃, 50%SOC) ≤30S

8

Max.Pulse Discharging

Current

3C (15℃～45℃, 50%SOC) ≤30S

9

Operating environment

Charging: -0℃-55℃, max.90%RH

Discharging: -20℃-55℃, max.90%RH

10

Impedance

＜0.7mΩ

11

Cell Weight

1.10kg±0.20kg

12

Mass Energy Density

145Wh/Kg

13

Volume Energy Density

308Wh/L

NO.

Item

Criterion

Test Method

1

0.5C discharging

capacity

Discharging capacity is not

less than normal capacity.

After Standard Charging, rest 5 minutes ,then

0.5C discharge to ending voltage.

2

Room

temperature 1C

discharging

capacity（initial

capacity）

Discharging capacity must be

not less than nominal

capacity and no more than

110% nominal capacity. Range：≤5% the average of initial capacity

After the cell is charged with 1C，and then discharge it to 2.5V with 1C.Repeat 5 times（If the range of capacity is no more than 3% nominal capacity and sustains 3 times，stop the test early）,average the last three.

4

Standard cycle life

Discharging capacity is not

less than 80% initial capacity

when have cycled 2000 times

Test condition: 25±2℃ Charge：1C to 3.65V, then constant voltage 3.65V charge till charged current declines to ≤ 0D.i0s5cCharge：1C to 2.5V When the discharge capacity reduced to 80% of rated capacity, Stop testing

5

Ratio discharging capacity

Discharging capacity should

be not less than 90% initial

capacity

After the cell is charged with 1C，and then discharge it to 2.5V with 3C.Compare with the initial capacity.

6

Ratio charging

performance

Discharging capacity should

be not less than 80% initial

capacity

After the cell is charged with 2C，and then discharge it to 2.5V with 1C。Compare with the initial capacity.

7

Low

temperature

discharging

capacity

Discharging capacity should

be not less than 70% initial

capacity

After the cell is charged with 1C，keep the cell at -20℃±2℃ for 24 hours，and then discharge it to 2.0V with 1C at -20℃±2℃。Compare with the initial capacity.

8

High

temperature

discharging

capacity

Discharging capacity should

be not less than 90% initial

capacity

After the cell is charged with 1C，keep the cell at 55℃±2℃ for 5 hours，and then discharge it to 2.5V with 1C at 55℃±2℃。Compare with the initial capacity.

9

Charge retention

capacity and

recovering

capacity of room

temperature

Charge retention capacity should be not less than 85% initial capacity ； recovering capacity should be not less than 90% initial capacity

After the cell is charged with 1C，keep the cell at room temperature for 28days ， and then discharge it to 2.5V with 1C at room temperature. Metering the charge retention capacity；Then the battery should be charged with 1C and should be discharged with 1C at room temperature. Metering the recovering capacity.

10

Charge retention

capacity and

recovering

capacity of high

temperature

Charge retention capacity should be not less than 85% initial capacity ； recovering capacity should be not less than 90% initial capacity

After the cell is charged with 1C，keep the cell at 55℃±2℃ for 7daysand rest 5h at room temperature，discharge it to 2.5V with 1C at room temperature. Metering the charge retention capacity ； Then the cell should be charged with 1C and should be discharged to 2.5V with 1C at room temperature. Metering the recovering capacity.

11

Appearance

The surface of cell should be

dry and labeled clearly，and

without burr ， scratch ，

contamination，distortion，

break and so on

Visual inspection

12

Polarity

The cell polarity should be

labeled clearly and correctly

Measured with voltmeter

13

Dimension and

Weight

The cell dimension and weight accord with stated value

Using measuring tools and electronic scale

14

Storage

Discharging capacity should

be not less than 90% initial

capacity

After the cell is charged with 1C，and then discharge it with 1C in 30min at room temperature. Keep the cell at 45℃±2℃for 28days and rest 5h at room temperature. Then the cell should be charged with 1C and should be discharged to 2.5V with 1C at room temperature. Metering the discharging capacity.

NO

Item

Criterion

Test Method

1

Constant

temperature and

constant

humidity test

No explosion，no fire， no

leakage. Discharging

capacity is not less than 85%

initial capacity

After Standard Charging, test condition： Temperature：40±5℃ Relative Humidity：90~95%RH Storage Time：48 hours Then return to room temperature for 2 hours， Then 0.5C discharged to ending voltage.

2

Vibration test

No explosion, no fire，no

Leakage

After Standard Charging ， fixed the cell to vibration table, then subjected to vibration testfor 30 minutes per axis of XYZ axes. Frequency rate：1oct/min Vibration frequency：10Hz-30Hz Excursion (single amplitude)：0.38mm Vibration frequency：30Hz-55Hz Excursion (single amplitude)：0.19mm

3

Shock test

No explosion, no fire，no

leakage

After Standard Charging，test condition：

Acceleration：100m/s2

Pulse lasting time：<16ms

Shock times：1000±10 times

1

Overcharge test

No explosion，no fire

After the cell is charged with 1C ， test condition： Charge : 1C to 5.475V

When the voltage get to 5.475V or charge for 60 min ,Stop testing and observe 1h.

2

Over-discharge

test

No explosion，no fire，no

leakage

After the cell is charged with 1C，discharge 90 min at 1C，stop testing and observe 1 h.

3

Short-circuit

test

No explosion, no fire

After the cell is charged with 1C，Short circuit the positive and negative 10 min，and the resistance of the external line is not more than 5mΩ，Stop testing and observe 1h.

4

Free fall test

No explosion，no fire，no

leakage

After the cell is charged with 1C，the positive and negative terminal face down，and then cell falls freely from the height of 1.5m down to the cement floor，and observe 1h.

5

Heating test

No explosion, no fire

After the cell is charged with 1C，Put cell into a hot box. Test condition: Temperature rate ：5℃ /min

Ending temperature :130℃±2℃

Keep temperature for 30 minutes ,then stop testing and observe 1 h.

6

Crush test

No explosion, no fire

After the cell is charged with 1C，fixing the cell. Test condition: Direction of extrusion：perpendicular to the pole piece Crushing speed：（5±1）mm/s Crushing plate：A half cylinder with a radius of 75mm，longer than the cell When the voltage reach 0V or eformation get to 30% or extrusion force get to 200kN，stop testing and observe 1 h.

7

Seawater

immersion test

No explosion, no fire

After the cell is charged with 1C，put the cell into seawater or saltwater. Test condition: Concentration：3.5% NaCl After 2 h，stop testing and observe 1 h.

8

Temperature

cycling test

No explosion，no fire，no

leakage

After the cell is charged with 1C，put the cell into a High-low Temperature Chamber. Test condition： First stage ： decrease the temperature from 25℃ to -40℃ Decrease temperature time：60min Holding time：90min Second stage ： raise the temperature from

-40℃ to 25℃ Raise temperature time：60min Third stage：raise the emperature from 25℃ to 85℃ Raise temperature time：90min Holding time：110min

Forth stage ： decrease the temperature from 85℃ to 25 Decrease time：70 min

Change the temperature from the first stage to the forth stage and cycle five times，then stop testing and observe 1 h.

9

Low pressure

test

No explosion，no fire，no

leakage

After the cell is charged with 1C，put the cell into a Vacuum Chamber. Test condition： Pressure：11.6 kPa

Temperature：room temperature

Time：6h then stop testing and observe 1 h.

Note: Above testing of safe characteristics must be with protective equipment.