Battery acid filling device and control method

Abstract

The invention discloses a battery acid filling device and belongs to the battery production technology field. The device comprises a rack, an acid injection component, a vacuumizing component and a battery installation frame, wherein the acid injection component and the vacuumizing component are arranged on the rack, the battery installation frame is arranged on one side of the rack, and the acidinjection component is connected with the vacuumizing component; the acid injection component is used for f filling a battery with acid; the vacuumizing component is used for keeping an inner cavity of the battery to be in a vacuum state. The acid injection component and the vacuumizing component are arranged at a cathode and an anode of the battery, the acid is automatically injected into the inner cavity of the battery, pressure of the inner cavity of the battery is detected while acid filling is performed, the inner cavity of the battery is ensured to be in the vacuum state, and acid filling efficiency is guaranteed. An observation tank is arranged, an operator can conveniently observe whether the battery is filled with acid, automatic operation of a whole acid filling process of automatic material taking, automatic acid filling and automatic vacuum state detection is achieved, the acid filling efficiency is high, and manpower is saved.

Description

technical field [0001] The invention relates to the technical field of battery production, in particular to a battery acid filling device and a control method. Background technique [0002] The acid filling of the horizontal battery is generally vacuum acid filling, so the air tightness detection process of the battery needs to be used to prevent the battery from leaking acid before the battery is filled with acid. The detection method adopted is to inflate and pressurize the battery case and maintain the pressure for a certain period of time to detect the internal pressure drop to determine whether there is an air leak; then release the pressure and refill the acid; the acid injection is to inject the battery electrolyte (a certain concentration Sulfuric acid) is poured into the battery quantitatively, and the acid filling method often used is to first vacuum the casing, and then suck the electrolyte into the casing through the negative pressure generated in the casing. Th...

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Problems solved by technology

Therefore, in the actual production process, air tightness testing and acid filling are two processes, and the operation needs to be completed on two devices, and the two devices occupy a large space, and two operators need to be matched to complete the operation. Inflate and pressurize and then release the pressure, and then vacuumize, and the time used for vacuuming is often very long, which makes the process of air tightness testing and acid filling more cumbersome, and the production time is longer

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