LIQUID INJECTION DEVICE

The present disclosure provides a liquid injection device, including a conveying mechanism, a weighing mechanism, a lifting mechanism and a guide mechanism. The weighing mechanism is positioned below the conveying mechanism. The lifting mechanism is configured to transfer a battery on the conveying mechanism to the weighing mechanism. The guide mechanism includes a first guide plate, a second guide plate and a power member. A distance between the second guide plate and the first guide plate may be adjusted through the power member, so that the liquid injection device may be compatible with batteries with different models. It is unnecessary to perform model change operation when the battery is changed, thus improving production efficiency.