Most chargers have a charging current limit. So the charger will not be damaged. But charging a 48V battery pack with a 60v charger is not matched, and the current of the 60v charger is definitely high, which will damage the battery over time.
There are many kinds of chargers, such as lead-acid battery charger, valve regulated sealed lead-acid battery testing and monitoring, cadmium-nickel battery charger, nickel-metal hydride battery charger, lithium-ion battery charger, portable electronic equipment lithium-ion battery charger, lithium-ion battery protection circuit charger, electric car battery charger, car charger and so on.
Storage battery charger: It is specially designed for charging lead-acid maintenance-free batteries or battery packs widely used in the market, and the whole machine is small in size, light in weight and easy to move. Charger (charger) according to the design of the circuit operating frequency, can be divided into industrial frequency machine and high frequency machine. Industrial frequency machine is a traditional analog circuit principle to design, machine internal power devices (such as transformers, inductors, capacitors, etc.) are larger, generally in the operation of a larger load there is a small noise, but the model in the harsh environmental conditions of the grid resistance performance is strong, reliability and stability are stronger than the high-frequency machine.
The high-frequency machine is a microprocessor (CPU chip) as a processing control center, is the complex hardware analog circuit burned into the microprocessor to the way the software program to control the operation of the UPS. Therefore, the volume is greatly reduced, the weight is greatly reduced, the manufacturing cost is low, the price is relatively low. High-frequency machine inverter frequency is generally more than 20KHZ. But high-frequency machine in the poor power grid and environmental conditions under the ability to withstand poor, more suitable for more stable power grid and less dust, temperature / humidity suitable for the environment.
Industrial frequency type
Charger through the microcomputer control technology,
1)Adopt the principle of capacity balancing to intelligently determine the adequacy of the battery;
1)Under the premise of ensuring that the battery is sufficiently charged,
2)High-brightness LED indication of the charger's operating status;
3)Display battery voltage, power supply voltage, charging current, capacity, time and other parameter information, fault code display fault content;
4) with open circuit, reverse fault protection and alarm function;
5) with overload, short-circuit fault protection and alarm function;
6) with transformer over-temperature, module over-temperature and other fault protection and alarm function;
7) with auto-detection, time-delay start, soft-start function;
8) with automatic detection, delayed
7) with automatic detection, delayed start, soft start function;
8) with manual or automatic equalization charging function, to ensure the consistency of the capacity of the battery group unit;
9) with automatic initial charging function;
10) with desulfurization charging function;
11) charger automatically shuts down by unplugging charging in the middle of the charging process.
Normal working conditions
(1) Altitude of not more than 2000 meters;
(2) Surrounding medium temperature is not higher than +40 ℃ and not lower than -10 ℃;
(3) Relative humidity of the air is not more than 85% (when the medium temperature is 20 ℃ ± 5 ℃);
(4) No Conductive dust place;
(5) No explosion risk environment;
(6) Does not contain corrosive metal and insulation of the gas and vapor environment;
(7) In the absence of rain and snow invasion of the place;
(8) In the vertical inclination of not more than 5 degrees, and no violent vibration and impact of the place.
Industrial frequency machine is characterized by simplicity, there are problems are
1) large size of input and output transformers;
2) large size of the output filter used to eliminate the high harmonics;
3) transformers and inductors to produce audio noise;
4) poor dynamic response to changes in the load and utility power;
5) low efficiency low;
6) input without power factor correction, more serious pollution of the grid;
7) high cost, especially for small-capacity models, can not be compared with high-frequency machines.
High-frequency type
High-frequency machine is a microprocessor (CPU stamen piece) as a processing control center, is the complex hardware analog circuit burned into the microprocessor, in the form of software programs to control the operation of the UPS. Therefore, the volume is greatly reduced, the weight is greatly reduced, the manufacturing cost is low, the price is relatively low. High-frequency machine inverter frequency is generally more than 20KHZ, but high-frequency machine in the poor power grid and environmental conditions, poor tolerance, more suitable for the grid is more stable and less dust, temperature and humidity in the right environment. High-frequency machine and industrial frequency machine comparison: small size, light weight, high operating efficiency (low operating costs), low noise, suitable for office space, cost-effective (the same power, the price is low), on the space, the environmental impact of small, because of the transformer of the industrial frequency machine to the utility and the load isolation, on the utility of the poor environment, the industrial frequency machine than the high-frequency machine can provide more secure and reliable protection, in some cases, such as medical care, etc., the charger is required to have isolation devices. In some occasions such as medical, etc., the charger is required to have an isolation device. Therefore, for industrial, medical, transportation and other applications, the IF machine is a better choice.
Compare
1, high-frequency machine is reliable, the world's leading manufacturers of charging machines in the technology selection and future development trend is to high-frequency for the absolute main direction, 30KVA and the following machines are to high-frequency machines, this is with high-frequency machine load dynamic response speed, high energy density, small size, low noise, low price has a lot to do with the high-frequency machine, especially high-frequency machines can be made to input Active power factor correction, on behalf of the future development trend of green power supply.
2, the reliability of high-frequency machine questioned, most of the domestic miscellaneous small charger manufacturers. Their own competitiveness is limited, so in the process of developing high-frequency machine by the development level of the limitations can not improve the performance of the body, which can only be introduced at the end of the 80's on the basis of Taiwan manufacturers of technology to improve the industrial frequency machine. Industrial frequency machine to the development of high-frequency machine is very important point is the high-frequency switching control of anti-interference problems.
Development
With the continuous development of technology, a lot of computers, power electronics in the field of new technologies, new ideas introduced into the charger industry. Charger has been with the former products whether in the main performance, appearance and size, adaptability to the field environment and reliability, have made significant progress, some indicators and even a qualitative leap, for large and medium-sized charger is more so.
Charging is an important step in the use of rechargeable batteries. Proper and reasonable charging is good for prolonging battery life, while improper charging will have a great impact on battery life.
Charging time
Battery capacity depends on the label on the outside of the battery, charging current depends on the input current labeled on the charger.
1, charging current is less than or equal to 5% of the battery capacity:
Charging time (hours) = battery capacity (mAH) × 1.6 ÷ charging current (mA)
2, charging current is greater than 5% of the battery capacity, less than or equal to 10% of the battery capacity: Charging time (hours) = battery capacity (mAH) × 1.5 ÷ charging current (mA)
3, charging current is greater than 10% of the battery capacity, less than or equal to 15%:Charging time (hours) = battery capacity (mAH) × 1.3 ÷ charging current (mA
4, charging current is greater than 15% of the battery capacity, less than or equal to 20%: Charging time (hours) = battery capacity (mAH) × 1.2 ÷ charging current (mA )
5, charging current is greater than 20% of the battery capacity:
Charging time (hours) = battery capacity (mAH) × 1.1 ÷ charging current (mA)