The working principle of the battery and the analysis of the self-made process

Dry battery is a primary battery in chemical power supply. It uses a metal cap as the positive electrode and a zinc cylinder shell as the positive electrode to convert chemical energy into electrical energy for use in equipment. Such as alkaline zinc-manganese battery, the battery discharge is the electrolytic reaction of ammonium chloride and zinc, and the released charge is collected by brass. In the chemical reaction, because zinc is more active than manganese, zinc loses electrons and is oxidized, and manganese gets electrons. Reduction, the electrolysis reaction of zinc will release hydrogen, which will increase the internal resistance of the battery, and manganese dioxide is used to absorb hydrogen. But if the battery continues to work or is used for too long, the manganese dioxide will be too late or saturated and unable to absorb it. At this time, the resistance will be useless because the internal resistance is too large and the output current is too small. Heating or leaving it for a period of time, the concentrated hydrogen inside it will be heated to release or slowly release manganese dioxide until it is restored and restored, and the battery will be alive again. The manufacturing process of the battery Let's take a look at how the commonly used alkaline zinc-manganese battery is manufactured. First, the steel casing is made into a cylinder with a diameter of 13 mm. The brass current collector in the battery is the core of the battery. Cut the brass wire to a length of 4 cm. Brass is a good conductor. Because of the high copper content, there may be oil stains on the surface of the brass. To roll the cut brass in the sand to polish the surface and remove the burrs, weld a nickel-plated cylinder head to each brass. Melt the zinc that easily releases electrons, and turn the molten zinc into a paste through the machine. The manganese dioxide mixed graphite powder is compressed into pellets suitable for being put in the battery, and then put into the nickel-plated battery steel shell. The batteries are sent for assembly through the vibrating plate and conveyor belt. The machine inserts the isolating membrane and then injects the alkaline electrolyte solution. The machine adds paste zinc to the batteries, and installs the brass electric rods. The machine seals each battery. It can be packaged and shipped out of the factory after detecting the packaging paper. Disclaimer: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete. Previous article: Standard analysis of 18650 lithium battery