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CN-224217504-U - Bare cell infiltration device

CN224217504UCN 224217504 UCN224217504 UCN 224217504UCN-224217504-U

Abstract

The embodiment of the utility model provides a bare cell infiltration device, and relates to the technical field of battery manufacturing. The bare cell infiltration device comprises a device body and a tray, wherein a first driving piece is arranged in the device body and drives electrolyte in an infiltration cavity to rotate along a first direction, the electrolyte continuously rotates along the same direction under the action of centrifugal force and can flow continuously and be fully and uniformly distributed in a plurality of bare cells at the same time, so that the time for the plurality of bare cells to infiltrate at the same time is accelerated.

Inventors

  • SUN JIAFENG
  • ZHANG ZHIHAI
  • JIANG DESHUN
  • MA XU

Assignees

  • 兰钧新能源科技有限公司

Dates

Publication Date
20260508
Application Date
20250526

Claims (10)

  1. 1. A bare cell wetting device, comprising: The device comprises a device body, wherein an infiltration cavity is formed in the device body and used for containing electrolyte, and a first driving piece is arranged in the device body and used for driving the electrolyte in the infiltration cavity to rotate along a first direction; The tray, be provided with a plurality of portions of placing on the tray, the portion of placing is used for setting up naked electric core, the tray set up in soak the intracavity, place the portion soak in the electrolyte.
  2. 2. The bare cell infiltration device according to claim 1, wherein a second driving member is arranged outside the device body, an output end of the second driving member is in transmission connection with the tray, and the second driving member drives the tray to rotate along a second direction; the first direction is opposite to the second direction.
  3. 3. The bare cell infiltration device according to claim 2, wherein a mounting opening is formed in the top of the device body, the second driving member is disposed outside the device body, an output end of the second driving member is in transmission connection with a transmission shaft, and the other end of the transmission shaft penetrates through the mounting opening and is connected with the tray.
  4. 4. The bare cell wetting device according to claim 3, wherein the trays comprise at least two trays, the at least two trays are connected with the transmission shaft and are arranged at intervals along the extending direction of the transmission shaft, and the transmission shaft sequentially penetrates through the centers of the at least two trays.
  5. 5. The bare cell infiltration device according to claim 3, wherein the device body comprises a lower cylinder and a cover body, the cover body is sealed with an opening of the lower cylinder, and the infiltration cavity is arranged inside the lower cylinder; The center of the cover body is provided with the mounting opening, and the second driving piece is arranged above the cover body.
  6. 6. The bare cell infiltration device of claim 1, further comprising a negative pressure apparatus, wherein an opening is provided at a top of the device body, the negative pressure apparatus is in communication with the opening, and the negative pressure apparatus is configured to place the infiltration chamber in a negative pressure state.
  7. 7. The bare cell infiltration device according to claim 1, wherein the tray is provided with a plurality of rectangular openings, rectangular grooves for placing the bare cells are formed in the placing part, the plurality of placing parts are arranged at the bottom of the tray, and the plurality of rectangular grooves are respectively communicated with the plurality of rectangular openings; the placing part is provided with a plurality of holes or is of a net structure.
  8. 8. The bare cell wetting device according to claim 1, wherein the placement portion is a clamping member, and the placement portion is configured to clamp the bare cell.
  9. 9. The bare cell infiltration device of claim 1, wherein the device body comprises a lower cylinder and a cover, the lower cylinder comprises an inner cylinder and an outer cylinder, the inner cylinder is disposed inside the outer cylinder, and the infiltration cavity is disposed inside the inner cylinder; The cover body and the outer cylinder are arranged in a sealing way; The first driving piece is arranged in the outer cylinder and at the bottom of the inner cylinder, the output end of the driving piece is in transmission connection with the bottom of the inner cylinder, and the first driving piece drives the inner cylinder to rotate around the first direction, so that electrolyte in the infiltration cavity rotates along the first direction.
  10. 10. The bare cell wetting device according to claim 9, wherein a pipeline is arranged between the inner cylinder and the outer cylinder, a liquid outlet is arranged on the inner cylinder, one end of the pipeline is communicated with the liquid outlet, and the other end of the pipeline penetrates through the outer cylinder and is communicated with the electrolyte conveying device.

Description

Bare cell infiltration device Technical Field The utility model relates to the technical field of battery manufacturing, in particular to a bare cell infiltration device. Background At present, the high energy density, long cycle life and compact degree of core infiltration of the lithium ion battery are inseparable, so that after the preparation of the bare cell of the lithium ion battery is finished, electrolyte is required to be adopted to infiltrate the bare cell, the infiltration effect of the bare cell can directly influence the electrical performance of the lithium ion battery, excessive, too little and uneven infiltration of electrolyte in the bare cell can directly reduce the electrical performance of the lithium ion battery, and even the safety performance of the battery can be influenced when serious. At present, the current method for infiltrating the electric core adopted in industry generally performs long-time normal-temperature static infiltration and high-temperature static infiltration on the bare electric core by injecting electrolyte so as to ensure that the electric core reaches a fully infiltrated state. Then, the soaking time is normally more than 48 hours, so that the soaking efficiency of the bare cell is low, and the whole manufacturing time of the battery is long. Disclosure of utility model The utility model aims to provide a bare cell infiltration device which can accelerate infiltration of bare cells. Embodiments of the utility model may be implemented as follows: in a first aspect, the present utility model provides a bare cell wetting apparatus, comprising: The device comprises a device body, wherein an infiltration cavity is formed in the device body and used for containing electrolyte, and a first driving piece is arranged in the device body and used for driving the electrolyte in the infiltration cavity to rotate along a first direction; The tray, be provided with a plurality of portions of placing on the tray, the portion of placing is used for setting up naked electric core, the tray set up in soak the intracavity, place the portion soak in the electrolyte. In an alternative embodiment, a second driving piece is arranged outside the device body, the output end of the second driving piece is in transmission connection with the tray, and the second driving piece drives the tray to rotate along a second direction; the first direction is opposite to the second direction. In an alternative embodiment, the top of the device body is provided with a mounting port, the second driving part is arranged outside the device body, the output end of the second driving part is in transmission connection with a transmission shaft, and the other end of the transmission shaft penetrates through the mounting port and is connected with the tray. In an alternative embodiment, the trays include at least two, at least two the trays with the transmission shaft is connected and follows the extension direction interval setting of transmission shaft, the transmission shaft runs through at least two in proper order the center of tray. In an alternative embodiment, the device body comprises a lower cylinder and a cover body, the cover body is sealed with the opening part of the lower cylinder, and the infiltration cavity is arranged in the lower cylinder; The center of the cover body is provided with the mounting opening, and the second driving piece is arranged above the cover body. In an optional embodiment, the bare cell infiltration device further comprises a negative pressure device, an opening is formed in the top of the device body, the negative pressure device is communicated with the opening, and the negative pressure device is used for enabling the infiltration cavity to be in a negative pressure state. In an optional embodiment, the tray is provided with a plurality of rectangular openings, the placement part is internally provided with a rectangular groove for placing the bare cell, the placement part is arranged at the bottom of the tray, and the rectangular grooves are respectively communicated with the rectangular openings; the placing part is provided with a plurality of holes or is of a net structure. In an alternative embodiment, the placement portion is a clamping member, and the placement portion is configured to clamp the bare cell. In an alternative embodiment, the device body comprises a lower cylinder and a cover body, the lower cylinder comprises an inner cylinder and an outer cylinder, the inner cylinder is arranged in the outer cylinder, and the infiltration cavity is arranged in the inner cylinder; The cover body and the outer cylinder are arranged in a sealing way; The first driving piece is arranged in the outer cylinder and at the bottom of the inner cylinder, the output end of the driving piece is in transmission connection with the bottom of the inner cylinder, and the first driving piece drives the inner cylinder to rotate around the first direction, so that electroly