Liquid injection nozzle and liquid injection device

By designing a structure in which the outlet of the injection nozzle and the outlet of the inlet channel flow in opposite directions, the problem of electrolyte directly impacting the electrode assembly is solved, improving the space utilization of the battery cell, reducing production costs, and decreasing injection time and battery contamination.

CN224520154UActive Publication Date: 2026-07-17CONTEMPORARY AMPEREX TECHNOLOGY CO LTD
0 Cites 0 Cited by

Patent Information

Application Number
CN202620623695.7
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2026-05-06
Publication Date
2026-07-17
Estimated Expiration
2036-05-06

AI Technical Summary

Technical Problem

During the battery cell manufacturing process, when the injection nozzle is connected to the injection port of the battery cell, the electrolyte can easily wash away the separator and electrode, causing the separator to fold and fail, which affects the space utilization and production cost of the battery cell.

Method used

Design a liquid injection nozzle, including an inlet section, a shielding section and a connecting section. The flow direction of the outlet intersects with the flow direction of the outlet end of the inlet channel. The electrolyte changes its flow direction at the outlet and the residual electrolyte is temporarily stored through the shielding section and the recess, reducing direct impact on the electrode assembly.

Benefits of technology

It improves the risk of electrode assembly failure due to folding, increases the space utilization of individual battery cells and reduces production costs, while also reducing liquid injection time and the risk of battery contamination.

✦ Generated by Eureka AI based on patent content.
Patent Text Reader

Abstract

The utility model discloses a liquid injection nozzle and a liquid injection device, and the liquid injection nozzle comprises a liquid inlet section which defines a liquid inlet channel; the shielding part is opposite to the outlet end of the liquid inlet channel, the shielding part and the liquid inlet section are spaced, a liquid outlet is defined between the liquid inlet section and the periphery of the shielding part, the overflowing direction of the liquid outlet intersects with the overflowing direction of the outlet end of the liquid inlet channel, a concave part is arranged on the side, facing the liquid inlet channel, of the shielding part, and the concave part is sunken away from the liquid inlet channel; and the connecting part is connected with the shielding part so as to fix the shielding part. According to the technical scheme, the electrolyte flows from the liquid inlet channel to the liquid outlet, the flowing direction can be changed, and the electrolyte generally moves along the parabolic trajectory, so that the electrolyte is not easy to directly impact the electrode assembly, the risk of turnover failure of the electrode assembly is improved, the residual electrolyte is not easy to drop out of the battery monomer after liquid injection is finished, and the service life of the battery monomer is prolonged. The space utilization rate of the battery monomer is improved; and the production cost is reduced.
Need to check novelty before this filing date? Find Prior Art