注液嘴和注液装置
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.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CONTEMPORARY AMPEREX TECHNOLOGY CO LTD
- Filing Date
- 2026-05-06
- Publication Date
- 2026-07-17
AI Technical Summary
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.
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.
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.
Smart Images
Figure CN224520154U_ABST
Abstract
Claims
1. A liquid injection nozzle characterized by comprising: include: Liquid inlet section, wherein the liquid inlet section defines a liquid inlet channel; The shielding part is opposite to the outlet end of the liquid inlet channel. The shielding part is spaced apart from the liquid inlet section and defines an outlet between the periphery of the liquid inlet section and the shielding part. The flow direction of the outlet intersects with the flow direction of the outlet end of the liquid inlet channel. The shielding part has a recess on the side facing the liquid inlet channel, and the recess is recessed away from the liquid inlet channel. A connecting part is connected to the blocking part to fix the blocking part.
2. The liquid injection nozzle of claim 1, wherein The flow area of the liquid outlet is greater than or equal to the flow area of the outlet end of the liquid inlet channel.
3. The liquid injection nozzle of claim 1, wherein The connecting part includes multiple connecting plates, which are spaced apart circumferentially along the liquid inlet section. The two ends of each connecting plate are connected to the periphery of the shielding part and the end of the liquid inlet section, respectively, and the liquid outlet is defined between two adjacent connecting plates.
4. The liquid injection nozzle of claim 3, wherein The connecting plate is provided with a liquid passage, which extends through the thickness of the connecting plate.
5. The injection nozzle as described in claim 4, characterized in that, A support rib is provided at the liquid outlet, and the support rib is connected to the edge of the liquid outlet.
6. The liquid injection nozzle of claim 1, wherein The connecting part is located inside the liquid inlet channel and connected to the middle part of the shielding part, and the liquid outlet is an annular opening that extends continuously along the circumference of the liquid inlet section.
7. The liquid injection nozzle of claim 1, wherein In the flow direction of the liquid outlet, the side surface of the connecting part facing the center of the shielding part is convex, and the convex surface protrudes from the middle of the circumferential direction of the liquid inlet section toward the center of the shielding part.
8. The liquid injection nozzle of claim 1, wherein, Along the flow direction of the outlet end of the liquid inlet channel, the projection of the outlet end of the liquid inlet channel is located within the projection range of the shielding part, and the projection of the shielding part is located within the area enclosed by the outer peripheral surface of the liquid inlet section.
9. The liquid injection nozzle of claim 1, wherein Along the flow direction of the outlet end of the liquid inlet channel, the projection of the outlet end of the liquid inlet channel is located within the projection range of the recess.
10. The liquid injection nozzle of claim 1, wherein The inner surface of the recess includes a flow guiding surface that extends in a direction away from the center of the shielding portion and toward the liquid inlet section.
11. The liquid injection nozzle of claim 1, wherein A baffle is provided at the opening of the recess, and the baffle is connected to the edge of the opening of the recess and partially blocks the opening of the recess.
12. The liquid injection nozzle of any one of claims 1-11, wherein, The outer peripheral surface of the liquid inlet section is provided with a limiting protrusion. When the liquid inlet section is inserted into the liquid injection port of the battery cell, the limiting protrusion is used to abut against the edge of the liquid injection port.
13. A liquid injection device characterized by comprising: Includes the injection nozzle according to any one of claims 1-12.