Lithium iron phosphate battery uses lithium iron phosphate as a positive electrode material and carbon as a negative electrode material to form a lithium ion battery. The production process is mainly divided into three stages: electrode production, cell production and battery assembly. In this process, electrode production is the basis, cell production is the core link, and battery assembly directly affects the quality of the final lithium battery product.

here is the method and process of lithium iron phosphate battery assembly process steps:

a, lithium iron phosphate battery assembly method

1. Select the appropriate cell, ensure that the cell type, voltage, internal resistance match, and balance the cell before assembly. The electrodes are cut and drilled.

2. Calculate the distance based on the hole positions and cut the insulation board.

(3) using the flange nut screw down the screws, to prevent the nut off, with a fixed iron phosphate lithium-ion battery pack.

4. Wire and weld cables and connect the voltage collection cable (equalizer cable). Do not use an external protection board to prevent burning.

5. Use insulated silicone for fixation, which will cure over time.

6. Install the protection plate. If the battery balance has not been carried out before, this is the last opportunity before assembly, and can be balanced by the balance line.

7. Secure the entire battery string with insulation panels and wrap the battery string with nylon tape. Do not use steel shells that may damage battery cells.

8. When packaging the battery cell as a whole, ensure that the battery cell and the protection board are fixed firmly to ensure that the battery cell can still work normally when it falls from a height of 1 meter.

9. Complete the package, use the silicone wire as the output input, due to the use of lithium iron core, 48V20AH battery pack weight is only 9 kg, half the weight of the same acid battery.

10. Test after assembly to ensure that requirements are met.

second, lithium iron phosphate battery assembly process steps

{{ 81-1}}. Battery material treatment: Special treatment of lithium ion and other secondary battery materials to ensure that the electrode high-speed treatment does not damage the active substance, electrolyte treatment to prevent precipitation and corrosive gas generation.

2. CAM device: with cylinder or AC servo actuator, ensure that the beat time is less than 1 second, and solve the problem of short maintenance cycle.

3. Mounting and base: Build robust mounting and base to maintain long-term stability and reduce startup time.

4. Vacuum treatment: With vacuum chamber and furnace body, as well as operation process mechanism and liquid application equipment, understand vacuum pumps, pipelines, valves and other equipment.

5. Accurate positioning: According to the requirements of mechanical positioning, image processing, to achieve high efficiency calibration system, maintain long-term accuracy.

6. Laser welding: Select the right laser welding mode according to the requirements, such as CO2, YAG, LED, fiber, etc.

7. Stamping: For a variety of presses, the production of high precision, high quality products.

8. Dimensional measurement: Use a variety of methods for dimensional measurement to maintain installation accuracy and ensure correct dimensions.

before assembly lithium iron phosphate battery, need to calculate the product size and load capacity of the lithium-ion battery pack, according to the capacity needs to choose the appropriate lithium battery for assembly.