Nickel-cadmium batteriesFirst, the characteristics of nickel-cadmiun batteries
1. Nickel-cadmium batteries can repeat more than 500 charge and discharge, very economical;
2. The internal resistance is small, the discharge of the current current can be discharged. When it is discharged, the voltage is changed, and as a DC power source is a battery with excellent quality;
3. Because it is completely sealed, there is no phenomenon that does not have an electrolyte leak, but also does not need to replenish the electrolyte;
4. Compared with other types of batteries, nickel-cadmium batteries can be filled with electricity or excessive, easy to operate;
5. The performance will not be degraded under a long time, and the original characteristics can be restored when it is very charged.
6. Can be used within a wide range of temperature ranges;
Sign in. Because it is made of metal containers, it has mechanical sturdy;
8. Nickel-cadmium batteries are manufactured under very stringent quality management, which has very excellent quality.
Second, nickel-cadmium battery discharge characteristics
1. The discharge voltage is based on its discharge current, which is generally 1.2V;
2. The capacity of the battery is expressed in units of AH, MAH;
3. When the discharge reaches the limit of the discharge, it is called the 'discharge termination voltage', the discharge stop voltage of the nickel-cadmium battery is 1.0 V / Cell;
4. The temperature range is used in -20 ¡ã C ~ 60 ¡ã C, discharge can be performed within this range.
Third, the precautions for preservation
1. It can be stored between the temperature range of -30 ¡ã C ~ 50 ¡ã C, but if it is placed for a long time, please save below 35 ¡ã C;
2. The preservation of the charging state or the discharge state is possible, but the discharge state of the comparison can cause the capacity to reply earlier and is easily activated;
3. When the battery is placed for a long time, it must be charged very much before use.
Fourth, Memory Effect "
When the nickel-cadmium battery is repeated after several times in low capacity, the battery will not function if a large amount of discharge is required, and this situation is called 'memory effect'. Memory effects may be the most easily misunderstood in nickel-cadmium batteries. The discharge termination voltage is set to a higher recorder. As the voltage is lowered, the surface appears to solve this phenomenon by the low discharge of the discharge voltage in the surface. It is recommended to discharge after ten charging to prevent memory effects.
lithium battery
First, the characteristics of lithium Ion battery:
1. With high energy density, the volume energy is 1.5 times compared to high-capacity nickel-cadmium batteries, and the weight of the weight is 2 times;
2. High voltage, the average use voltage is 3.6V, is three times the nickel-cadmium battery, and the nickel-hydrogen battery is 1.2V.
3. Use voltage flat and high capacity;
4. Load characteristics, 2C discharge is possible;
5. Wide range of temperature -20 ¡ã C ~ 60 ¡ã C
6. Excellent charge and discharge life, with at least 70% of the capacity after 500 discharges.
Differences in nickel-hydrogen batteries and lithium batteries:
First, weight aspect
From the voltage of each unit battery, nickel-hydrogen and nickel cadmium are 1.2V, while the lithium battery is indeed 3.6V, and the voltage of the lithium battery is 3 times the other two. And the weight lithium battery of the same type is almost equal to the nickel-cadmium battery, while the nickel nickel-metal hydrogen battery is relatively heavy. It can be seen that the weight of each battery is different, but the lithium battery can reduce the number of cells after the single battery in the case of outputting the same voltage due to the 3.6V high voltage, and reduces the weight and volume of the molded battery.
Second, memory effect
Nickel-hydrogen batteries have the same memory effect as nickel-cadmium batteries. Therefore, regular discharge management is also required. This periodic discharge management is processed in a blurred state, and even some discharge management is discharged under incorrect knowledge. It is impossible to avoid when using NiMH batteries. The relative lithium battery is very convenient and simple because there is no memory effect at all. It doesn't have to pay attention to the residual voltage, and the charging time can naturally be shortened.
Third, self-discharge rate
Nickel-cadmium batteries are 15 to 30% (month). The nickel hydrogen battery is 25 ~ 35% (month), and the lithium battery is 2 to 5% (month). The self-discharge ratio of the above nickel-hydrogen batteries is the largest, while the low length of the lithium battery is extremely low compared to other two types of batteries.
Fourth, charging method
NiMH batteries and lithium batteries cannot be charged. Therefore, the nickel-hydrogen battery will stop continuing to charge to the best charging mode when the charging voltage is up to the highest in the PICK CUT control method of the current. The lithium battery uses a fixed current, and the voltage is charged is preferably charged, and the nickel-hydrogen battery and the lithium battery are charged if charging in the charger-DV control method of nickel-cadmium bat Recommend: LiFePO4 Battery Manufacturer Energy storage battery Manufacturer Integrated machine energy storage battery series Manufacturer Lead lithium battery Manufacturer Outdoor Backup Battery Manufacturer Portable outdoor power supply Manufacturer Power battery Manufacturer Powerwall LiFePO4 Battery Manufacturer Battery rack Manufacturers Telecom LiFePO4 Battery Manufacturer Wall mounted battery storage Manufacturer China Lifepo4 Battery
