Test Standard: LV124

This test shall be carried out in accordance with DIN EN 60068-2-60 Method 4 with the following parameters:

SPS usage

Temperature cycling test

a) Raising the chamber-temperature to 70±3 ℃（158±5℉）within 30min and maintaining this temperature for 4h.

b) Reducing the chamber temperature to 20±3 ℃（68±5℉）within 30 min and maintaining this temperature for 2h.

c) Reducing the chamber temperature to minus 40±3 ℃（- 40±5℉）within 30 min and maintaining this temperature for 4h.

d) Raising the chamber temperature to 20±3 ℃（68±5℉）within 30min.

e) Repeating the sequence for a further 9 cycles.

f) After the 10th cycle, storing the batteries for a minimum of 24h, at a temperature of 20±5 ℃（68±9℉）prior to examination.

Test Standard:IEC 62133

Test Standard: IEC 61960

Test Discharge performance at 20 ℃

This test verifies the rated capacity of a cell or battery.

Step 1-The cell or battery shall be charged.

Step 2-The cell or battery shall be stored, in an ambient temperature of 20±5℃, if not less than 1h and not more than 4h.

Step 3-The cell or battery shall be discharged, in an ambient temperature of 20±5℃，at a constant current of 0,2 lt A, until its voltage is equal to the specified end-of-discharge voltage.

Step 4-The capacity delivered during step 3 shall be not less than of the rated capacity declared by the manufacturer.

Step 1 to 4 may be repeated up to four additional times, as necessary to satisfy this requirement.

Test Discharge performance at -20 ℃

This test determines the capacity of the cell or battery at a low temperature.

Step 1-The cell or battery shall be charged.

Step 2-The cell or battery shall be stored, in an ambient temperature of -20±2℃, for not less than 16h and not more than 4h.

Step 3-The cell or battery shall be discharged, in an ambient temperature of -20±2℃, at a constant current of 0,2 lt A, until its voltage is equal to the specified end-of-discharge voltage.

Test High rate discharge performance at 20 ℃

This test determines the capacity of the cell or battery when discharge at a high rate. This test is not required if the cell or battery is not designed to be used at this rate.

Step 1-The cell or battery shall be charged.

Step 2-The cell or battery shall be stored, in an ambient temperature of 20±5℃, for not less than 1h and not more than 4h.

Step 3-The cell or battery shall be discharged, in an ambient temperature of 20±5℃, at a constant current of 1,0 lt A, until its voltage is equal to the specified end-of-discharge voltage.

Test Standard: 62660-2

Thermal test

This test is performed to characterize cell responses to high-temperature environment.

a) Adjust the SOC of the cell to for BEV application, and to 80% for HEV application.

b) The cell, stabilized at room temperature, shall be placed in a gravity or circulating air-convection oven. The oven temperature shall be raised at a rate of 5K/min to a temperature of 130 ℃. The cell shall remain at this temperature for 30 min before the test is discontinued. If necessary, to prevent deformation, the cell may be maintained during the test in a manner that does not violate the test purpose.

Temperature cycling

This test is performed to characterize thermal durability of a cell by exposing at a low and high temperature environment alternately to cause expansion and contraction of cell components.

a) Adjust the SOC of the cell to for BEV application, and to 80% for HEV application.

b) Perform the temperature cycling in accordance with ISO 16750-4 as shown The minimum operating temperature shall be -40℃ or Tmin specified by the cell manufacturer and the maximum operating temperature shall be 85 ℃ or Tmax specified by the cell manufacturer. Perform 30 test cycles as specified.

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Test purposes

Test conditions

Coupon evaluation equipment

Test Method: LV124

Heat chamber：ambient~+150℃, the general test requirement is +70℃

Cool chamber：0℃ salt water

The EV battery performs cold and heat shocks between the hot room and cold room.

Test Standard: LV124

This test shall be carried out in accordance with ISO 20653 with the following parameters:

Test standard: UL1703

Salt Spray Test

To determine whether rainwater can enter the module or assembly under field conditions, and if the entered water can cause a ground fault or a safety hazard.

[Device]

The apparatus for salt spray testing is to consists of a chamber with inside measurement of 48 in by 30 in by 36 in (1.22 m by 0.76 m by 0.91 m) or larger if required;

A salt solution reservoir; a supply of conditioned compressed air;

One dispersion tower constructed in accordance with ASTM designation B117-97, for producting a salt spray;

Specimen supports;

Provision for heating chamber;

And necessary means of control.

[Test Procedure]

A) The salt solution is to consist of 5% by weight of common salt (sodium chloride) in distilled water. The pH value of the collected solution is to be between 6.5 and 7.2, and have a specific gravity between 1.026 and 1.040 at 95°F (35°C). The temperature of the chamber is to be maintained within the range of 92°F to 97°F (35°C-36°C) throughout the test.

B) The test sample is to be supported on plastics racks at an angle of 15 degrees from the vertical.

C) Drops of solution which accumulate on the ceiling or cover of the chamber are to be diverted from dripping on the specimen. Drops of solution which fall from the specimen are not to be recirculated, but are to be removed by a drain located in the bottom of the apparatus.

D) Reference specimens, 4 in by 12 in (102 mm by 305 mm) commercial zinc coated sheet steel are to be used for comparison. The selected specimens are to be represent of the minimum acceptable amount of zinc coating under requirements for G90 or G60 coating designation (as appliable, see accessibility of Uninsulated Parts, Section 15) as determined in accordance with standard test method for weight of coating on zinc-coated iron or steel articles, ASTM A90-81(1991) such zinc coatings are considered as providing acceptable protection against corrosion.

E) The zinc coated reference specimen are to be cleaned with soap and water, rinsed with ethyl alcohol and ethyl ether, dried, blade, and the cut edges protected with pain, wax or other effective medium before being placed in the salt spray chamber.

F) Both the reference specimen and samples under test are to be scribed with a single groove approximately 6 in (152m) long, to expose the underlying steel.

G) The test is to continue until the coating on the test sample or reference samples are broken down and corrosion products are formed on the underlying steel.

Moist Carbon Dioxide/Sulphur Dioxide Corrosion Test

[Device]

The chamber size shall be 48 in by 30 in by 36 in (1.22 m by 0.76 m by 0.91 m) or if a larger chamber is required. To maintain a temperature of 95±3F (35±2 "C), a water jacket and thermostatic control heater are required.

[Test Procedure]

A) The specimens are to be supported on plastic racks at an angle of 15 degrees from the vertical.

B) Reference specimens, 4 in by 12 in (102mm by 305mm) commercial zinc coated sheet steel are to be used for comparison.

C) The zinc coated specimens are to be cleaned with soap and water, rinsed with ethly alcohol and ethyl ether, dried, and protected with paint, wax or other effective media before being placed in the chamber.

D) Both the reference specimen and sections of the module being tested are to be scribe with a single groove approximately 6 in (152 mm) long to expose the underlying steel.

E) The test is to continue until the coating on the module or reference specimen is broken and corrosion products are formed on the underlying steel.

Test Standard: LV124

Test standard: IEC62688, IEC62108, UL1703

[Test Purpose]

To determine whether rainwater can enter the module or assembly under field conditions, and if the entered water can cause a ground fault or a safety hazard.

[Test Procedure]

A) Fixture installation of modules and components can achieve the following four directions:

The angle between the front angle and the horizontal angle is 45 degrees;

At the stop position;

Within normal range which allows tracking Angle;

Reverse position (using the appropriate operating mode);

Note: for some design, these directions may be superfluous.

A) Complete the wiring connection according to the specified connection method and installation instructions. When there are multiple specified wiring modes, should choose at least one code which can restrict the water into wiring space.

C) The fixtures used for the rain test need to meet ANSI/UL 1703:2002 standard requirements.

D) Modules or components were sprayed water more than 1 hour, spray in every four directions, spray for no less than 15 minutes, need to detect modules or components for testing whether the conductive part with water or water infiltration after one hour of spraying, If water exists in the above areas, you need to take corresponding measures, such as increasing drain, etc., maintain water depth does not reach the conductive parts.

E) the Insulation test (as shown in figure 13) should start after 1-2 hours of spraying, don't manual stop spraying, If found that insulation resistance value is lower than the specified value, and the reason is moisture inside the module, then Wait for the module to dry and re-insulate.

Test Standard: LV124

This test shall be carried out in accordance with ISO 20653 with the following parameters: