Matters to watch out for using a polymer lithium-ion battery

First, the battery operation notes

Since the cells are in flexible packaging, care must be taken to operate the cells in order to ensure that the performance of the cells is not compromised.

1. Aluminum-foil packaging material

Aluminum foil packaging materials are easily damaged by sharp parts, such as nickel sheets and sharp needles.

Do not use sharp parts to collide with the battery

The working environment should be cleaned to avoid the presence of sharp parts

Do not pierce the battery with nails and other sharp objects

Do not transport or store batteries with metal objects such as necklaces, hair clips, etc.

2. Top edge

The top seal is very vulnerable

Do not bend the top edge

3. Folding

The hem was completed during the battery production process and passed the seal test.

Do not open or break the fold

4. Ear

The mechanical strength of the ear is not exceptionally strong, especially for aluminum sheets.

Do not bend the ear

5. Mechanical impact

Do not drop impact, bend the battery

Do not strike or step on the battery with a hammer

Do not tap or throw the battery.

6. Short circuit

Short-circuit cells are prohibited at any time, which can cause serious damage to the battery cells.

It is forbidden to connect the battery positive and negative with a short circuit of metal objects such as wires.

Second, the polymer lithium ion battery test standard environment

Ambient temperature: 20±5°C

Relative humidity: 45~85%

The battery must be discharged before the test.

Third, polymer lithium ion electric charge and discharge precautions

Charging

The charging current and charging voltage shall not exceed the following standards. If the specified value is exceeded, the charging and discharging performance, mechanical performance and safety of the battery may be damaged, which may cause heat and leakage.

The battery charger must be capable of constant current and constant voltage charging;

The charging current of the single battery during charging must be below 1C5A;

The temperature range during charging is 0~+45°C;

The voltage should not exceed 4.23V during charging.

2. Discharge

The discharge current shall not exceed the following standards, and the discharge must be carried out within the scope of this standard.

The discharge current of the single cell must be less than 2C5A;

The temperature range during discharge is -20~+60°C;

The discharge termination voltage of the single cell is not less than 2.75V.

3. Over-discharge

It should be noted that while the cell is not in use for a long period of time, it may be in some over-discharge state with its self-discharging characteristics. In order to prevent the occurrence of over-discharge, the over-discharge cannot be made to make the single cell lower than 2.5V.

4. It is required to add a qualified protection circuit board for a specific application.

Fourth, polymer lithium-ion battery storage

The long-term storage environment of the battery is: temperature -20~+35°C

Relative humidity 45~75%

When the battery storage period is nearly one year, the battery should be charged 10%~50% by standard charging method.

Fifth, polymer lithium-ion battery transportation

The battery should be transported at 10% to 50% of the state of charge.

Sixth, polymer lithium-ion battery other instructions

1. In order to prevent the battery from leaking, heating or exploding, please pay attention to the following precautions:

It is forbidden to disassemble the battery under any circumstances.

Do not immerse the battery in water or sea water, and do not get wet.

Do not place the battery near a heat source such as a fire or heater.

Do not heat or throw the battery into a fire.

Direct soldering of the battery is prohibited.

Do not charge in a fire or in a hot environment.

Do not put the battery in a microwave or high-pressure container.

Do not use or place the battery at high temperatures (such as in strong sunlight or hot cars), as this may cause overheating fire or functional decline, and reduced life.

2. Polymer lithium-ion batteries theoretically do not have a flowing electrolyte, but in case of electrolyte leakage and contact with skin, eyes or other parts of the body, immediately flush the electrolyte with water and seek medical attention.

3. It is forbidden to use the damaged battery core (the battery core is damaged, the outer casing is damaged, the electrolyte gas is smelled, the electrolyte leaks, etc.).

If there is electrolyte leakage or the smell of electrolyte, the battery should be kept away from the fire to avoid fire or explosion.

The page contains the contents of the machine translation.