Welcome to the world of DIY 48V 280Ah battery pack! In this field full of infinite possibilities, with your own hands and wisdom, you will create a reliable and high-performance battery pack. This instruction manual will be your powerful assistant, accompanying you throughout the entire exciting DIY project from materials to final testing.
I .Assemble equipment.
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- Assemble strictly in accordance with the specifications and requirements of the battery. Do not exceed the rated voltage and current of the battery.
- Ensure that the battery is firmly connected and has good contact. Avoid looseness or poor contact that may lead to dangers such as heating and fire.
- During the assembly process, pay attention to preventing battery short circuits. Avoid direct contact between metal tools or wires and the positive and negative poles of the battery.
- During the use of the battery pack, pay attention to heat dissipation and avoid working in a high-temperature environment for a long time.
- Regularly check the status of the battery pack, including voltage, current, temperature, etc. Deal with problems in time when discovered.
- If you are not familiar with battery assembly, it is recommended to operate under the guidance of professionals.
II.Battery detection
1-1. Use a voltmeter to measure the voltage of each single battery to ensure that the voltage is within the normal range and close. If the voltage difference is large, parallel voltage equalization of the battery may be required.
1-2. Check the appearance of the battery to ensure that there is no damage, leakage, etc.
III. Assembly steps
3-1. Install the positive terminal (red), and just tighten the screw (Figure 1).
3-2. Install the negative terminal (black), and just tighten the screw (Figure 1).
3-3. Install the air switch (Figure 2, Figure 3, Figure 4).
3-4. Install the PCB board (Figure 5).
3-5. Install the 3.2-inch LCD (Figure 6).
3-6. Use the positive terminal connecting piece to connect the positive poles (Figure 7).
3-7. Install EVA sponge and epoxy board (Figure 8).
3-8. Install the battery (Figure 9).
3-9. Install the baffle with the screw holes facing upward. Just tighten the screws (Figure 10).
3-10. Install two metal strips (Figure 11-1).
3-11. Install the connecting piece (Figure 12).
3-12. Install the connecting wires.
a. For the flat cable with the mark "1", start connecting to the negative pole of the battery from the first red line of the black temperature wire. The others are connected to the positive pole of the battery (Figure 13).
b. For the flat cable with the mark "2", start connecting to the positive pole of the battery from the first red line of the black temperature wire. And the last red line is connected to the first red line with the mark "3" and simultaneously connected to the positive pole of the battery (Figures 14 and 15).
c. For the flat cable with the mark "4", start connecting to the positive pole of the battery from the first red line of the black temperature wire (Figure 16).
d. Arrange the flat cables (Figure 17).
3-14. Install the protection board (Figure 16).
3-15. Measure the voltage (Figure 17).
3-16. Connect BAT+ to the total positive pole of the battery (Figure 18).
3-17. Insert the flat cables into the ports NT1/NT2/NT3/NT4 of the protection board respectively from 1 to 4 (Figure 19).
3-18. Connect B- and the total negative pole of the battery with a copper sheet (Figure 20), and install another copper sheet (Figure 20).
3-19. Connect the three corresponding wires of the protection board respectively as shown in (Figure 21).
3-20. Close the cover and connect the installed copper sheet of the air switch and the remaining two wires to the total positive pole of the battery (Figure 22).
3-21. Connect the copper sheet connecting wire of P- of the protection board to the negative terminal (Figure 23).
3-22. Tighten the screws of the cover (Figure 24).
3-23. Press and hold the display screen for 3 seconds and turn on the air switch (Figure 25).
IV. Parameter configuration and debugging.
1. Scan the "QR code" on the right with your mobile phone, download the "APP" of Jikong protection board and install it.
2. Press and hold the LCD display switch for 3 seconds to activate the protection board.
3. Turn on the Bluetooth of your mobile phone (Figure 26).
4. Open the installed "APP" of Jikong protection board and connect to "JK-JP2A16S20P" (Figures 26 and 27).
5. Firstly, the default factory pairing password is 1234, and the default modification parameter authorization password is 123456.
6. Click "Parameter setting" (Figure 28).
7. Click "Authorization setting" (Figure 29).
8. Enter the password "123456" and click "Verify" (Figure 30).
9. Click "One-click lithium iron phosphate", set the corresponding parameters (the number of single cells (in series) and battery capacity (Ah) as well as continuous charging current (50)), and click "Set". (Figures 31 and 32).
10. Click BMS control and turn on the charging switch, discharging switch and equalization switch (Figure 33).
V. Close the cover and install the left and right handles.
After you assemble the 48V 280AH battery pack, the following precautions will ensure the safe, stable and long-lasting operation of your battery pack.
I. Charging precautions
1. Use a matched charger: Be sure to choose a charger specially designed for 48V large-capacity batteries. Avoid using an inappropriate charger, which may lead to abnormal charging, overheating and even overcharging and damage to the battery.
2. Control the charging environment: When charging, the battery should be placed in a well-ventilated, dry and suitable temperature environment. Avoid charging near high temperatures, humidity or flammable materials to prevent danger.
3. Monitor the charging process: During charging, regularly check the temperature and voltage of the battery pack. If abnormal temperature rise or unstable voltage is found, stop charging immediately and check the reason.
1. Avoid excessive discharge: Try to avoid completely discharging the battery pack to avoid irreversible damage to the battery. When the battery power is close to the low power warning, it should be charged in time.
2. Control the load: Ensure that the load connected to the battery pack is within its rated range to avoid overloading and causing overheating, shortened life or damage to the battery.
3. Prevent short circuits: During use, ensure that the wire connections are firm and avoid short circuits caused by looseness or poor contact. At the same time, prevent metal objects from accidentally contacting the positive and negative poles of the battery.
III. Storage precautions
1. Appropriate storage environment: If the battery pack is not used for a long time, it should be stored in a dry, ventilated and moderate temperature place. Avoid direct sunlight and humid environments.
2. Regular charging maintenance: During storage, the battery pack should be charged regularly to maintain the activity of the battery. Generally, it is recommended to charge once every few months.
3. Disconnect: When storing, the battery pack should be disconnected from external devices to prevent self-discharge or accidental discharge of the battery.
IV. Safety precautions
1. Take protective measures: When operating the battery pack, appropriate protective equipment such as gloves and goggles should be worn to prevent accidental injury.
2. Keep children away: Place the battery pack in a place where children cannot reach to avoid accidents.
3. Professional maintenance: If the battery pack malfunctions or is abnormal, do not disassemble or repair it by yourself. Seek the help of professionals.
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