CN-224232678-U - Battery cell extrusion mechanism, battery cell activation device and battery production line

CN224232678UCN 224232678 UCN224232678 UCN 224232678UCN-224232678-U

Abstract

The application provides a battery cell extrusion mechanism, a battery cell activation device and a battery production line, which relate to the technical field of battery production, wherein the battery cell extrusion mechanism comprises a first air bag component, a second air bag component and a fluid driving component; the first air bag component comprises a first air bag and a first guide piece, the first guide piece is connected and communicated with the first air bag and the fluid driving component and is provided with a clothes hanger type flow channel, the second air bag component comprises a second air bag and a second guide piece, the second guide piece is connected and communicated with the second air bag and the fluid driving component and is provided with a clothes hanger type flow channel, the first air bag and the second air bag are oppositely arranged, a station for placing a battery cell is arranged between the first air bag and the second air bag, and the fluid driving component is configured to control the first air bag and the second air bag to expand or contract synchronously so that the first air bag and the second air bag can squeeze the battery cell together. Therefore, the expansion uniformity of the first air bag and the second air bag can be improved by utilizing the clothes hanger type runner, so that the extrusion effect of the first air bag and the second air bag on the battery cell is improved.

Inventors

FENG WEIGANG
WANG NING
LIU LIU
GAO YANG
ZHU YING

Assignees

宁德时代新能源科技股份有限公司

Dates

Publication Date: 20260512
Application Date: 20260303

Claims (13)

1. The battery cell extrusion mechanism is characterized by comprising a first air bag component, a second air bag component and a fluid driving component; The first air bag component comprises a first air bag and a first flow guide piece, wherein the first flow guide piece is connected and communicated with the first air bag and the fluid driving component and is provided with a clothes hanger type runner; The second air bag component comprises a second air bag and a second flow guide piece, wherein the second flow guide piece is connected and communicated with the second air bag and the fluid driving component and is provided with a clothes hanger type runner; The first air bag and the second air bag are oppositely arranged, a station for placing the battery cell is arranged between the first air bag and the second air bag, and the fluid driving assembly is configured to control the first air bag and the second air bag to expand or contract synchronously so that the first air bag and the second air bag co-squeeze the battery cell.
2. The cell extrusion mechanism of claim 1, wherein the first balloon assembly comprises a first detection member, the second balloon assembly comprises a second detection member; The first detection piece is connected with the first air bag and used for detecting the pressure of the first air bag, and the second detection piece is connected with the second air bag and used for detecting the pressure of the second air bag.
3. The cell extrusion mechanism of claim 2, wherein the first deflector is located on a side of the first balloon facing away from the cell and the second deflector is located on a side of the second balloon facing away from the cell.
4. The cell compression mechanism of claim 3, wherein the first bladder assembly further comprises a first valve, the second bladder assembly further comprises a second valve; The first valve is connected with the first diversion piece and the fluid driving assembly and is configured to control the on-off of the first diversion piece; the second valve is connected with the second flow guiding piece and the fluid driving assembly and is configured to control the on-off of the second flow guiding piece.
5. The cell extrusion mechanism as recited in claim 2, wherein the first balloon assembly further comprises a first stop; the second airbag module further comprises a second limiting piece; The first limiting piece is arranged around the periphery of the first air bag and limits the expansion of the first air bag so as to enable the first air bag to expand in the direction close to the battery cell; the second limiting piece is arranged around the periphery of the second air bag and limits the expansion of the second air bag, so that the second air bag expands in the direction close to the battery cell.
6. The cell extrusion mechanism of claim 2, wherein the first and second sensing members are barometers.
7. The cell extrusion mechanism of claim 2, wherein the first and second balloons exert a pressure value towards the cell of less than 0.1 kPa.
8. The cell extrusion mechanism of claim 2, wherein the first and second air cells are each contactable with large faces on opposite sides of the cell.
9. The cell extrusion mechanism of claim 1, wherein the fluid drive assembly comprises any one of a blower assembly, an air pump assembly, and a liquid pump assembly.
10. The cell extrusion mechanism as recited in claim 1, further comprising an ultrasonic detection assembly; The ultrasonic detection assembly is disposed opposite the battery cell and is configured to scan the battery cell for ultrasonic imaging.
11. The cell compression mechanism of claim 1, further comprising a motion assembly; the first air bag component and the second air bag component are connected with the motion component and can be driven by the motion component to move in a direction approaching or separating from each other.
12. A battery cell activation device, characterized in that the battery cell activation device comprises the battery cell extrusion mechanism as claimed in any one of claims 1 to 11.
13. A battery production line, characterized in that the battery production line comprises the battery cell activation device according to claim 12.

Description

Battery cell extrusion mechanism, battery cell activation device and battery production line Technical Field The application relates to the technical field of battery production, in particular to a battery cell extrusion mechanism, a battery cell activation device and a battery production line. Background In the process of producing the battery cell, in order to improve the electrochemical performance of the battery cell, an extrusion device is generally used for extruding the battery cell so as to promote chemical reaction of corresponding components of the battery cell. However, the existing extrusion device has the problem of poor extrusion effect, which greatly influences the production efficiency and yield of the battery cell. Disclosure of utility model The application provides a battery cell extrusion mechanism, a battery cell activating device and a battery production line, and aims to solve the problem that an existing battery cell extrusion device is poor in extrusion effect. In order to solve the problems, the application provides a battery cell extrusion mechanism which comprises a first air bag component, a second air bag component and a fluid driving component, wherein the first air bag component comprises a first air bag and a first guide piece, the first guide piece is connected and communicated with the first air bag and the fluid driving component and is provided with a clothes hanger type runner, the second air bag component comprises a second air bag and a second guide piece, the second guide piece is connected and communicated with the second air bag and the fluid driving component and is provided with a clothes hanger type runner, the first air bag and the second air bag are oppositely arranged, a station for placing a battery cell is arranged between the first air bag and the second air bag, and the fluid driving component is configured to control the first air bag and the second air bag to expand or contract synchronously so that the first air bag and the second air bag jointly extrude the battery cell. In the scheme, through setting up first gasbag and the relative setting of second gasbag, and still have the station of placing the electric core between first gasbag and the second gasbag, and first gasbag and second gasbag are connected and communicate with fluid drive assembly through first water conservancy diversion spare and the second water conservancy diversion spare that have clothes hanger formula runner respectively for fluid drive assembly can control the even inflation of first gasbag and second gasbag and extrude the electric core, with the extrusion effect that promotes electric core extrusion mechanism, thereby improve the production efficiency and the yield of electric core. In one embodiment, the first air bag assembly comprises a first detection piece and the second air bag assembly comprises a second detection piece, wherein the first detection piece is connected with the first air bag and used for detecting the pressure of the first air bag, and the second detection piece is connected with the second air bag and used for detecting the pressure of the second air bag. From this, connect first gasbag and second gasbag through setting up first detection piece and second detection piece respectively to can detect the pressure of the crowded electric core of first gasbag and second gasbag respectively, make electric core extrusion mechanism can adjust the pressure of first gasbag and second gasbag according to the testing result, with the pressure differential that reduces first gasbag and second gasbag, thereby reduce the probability that the electric core is injured by the pressure because of the both sides pressure differential is too big. In one embodiment, the first air bag is positioned on one side of the first air bag, which is away from the battery cell, and the second air bag is positioned on one side of the second air bag, which is away from the battery cell. From this, be located the one side that first gasbag deviates from the electric core through setting up first water conservancy diversion spare, and the second water conservancy diversion spare is located the one side that the second gasbag deviates from the electric core for first gasbag and second gasbag can expand towards electric core place position, so that first gasbag and second gasbag extrude the electric core jointly. In one embodiment, the first air bag component further comprises a first valve, the second air bag component further comprises a second valve, the first valve is connected with the first flow guiding piece and the fluid driving component and is configured to control on-off of the first flow guiding piece, and the second valve is connected with the second flow guiding piece and the fluid driving component and is configured to control on-off of the second flow guiding piece. From this, connect first water conservancy diversion spare and fluid drive subassembly through setting up first