Electrolyte re-injection system of battery cell battery pack battery pack which can re-inject electrolyte and re-injection method of electrolyte of electric car battery pack

摘要

The battery pack electrolyte re-injection system according to the present invention includes a negative electrode plate and a positive electrode plate and a storage case housing an electrode assembly having a separator interposed between the negative and positive electrode plates, and includes an injection valve on one side of the storage case. An inlet is formed, a plurality of battery cells are formed on the other side opposite to the inlet, the outlet including a discharge valve is formed; is configured, including, each inlet of the battery cells are connected in parallel by the main injection tube, the battery cell Each discharge port is connected in parallel by the main discharge pipe and is accommodated inside the outer case, and one end of the main injection pipe and the main discharge pipe passes through the outer case and is exposed to the outside, and the battery pack is connected to the main injection pipe of the battery pack Maintaining pump, a solvent tank including a solvent valve for supplying or blocking the solvent supplied to the main pump, an electrolyte tank including an electrolyte valve for supplying or blocking the electrolyte supplied to the main pump, 1C capacity retention rate of the battery pack Electrolyte re-injection judging unit to calculate whether (%) is necessary for re-injection of electrolyte, supply amount calculation unit to calculate the supply amount of solvent and electrolyte to be supplied to the solvent tank and the electrolyte tank, and electrolyte solution of the electrolyte re-injection determination unit A control unit for controlling the injection valve, discharge valve, injection pump, solvent valve, and electrolyte valve to supply the calculated solvent or electrolyte to each battery cell constituting the battery pack according to the determination as to whether re-injection is necessary, and re-establishment of the electrolyte. It provides an electrolyte re-injection system of a battery pack and a method of re-injecting an electrolyte of a battery pack, including a notification unit informing a user of whether an injection is necessary and the calculated amount of solvent and electrolyte.