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CN-224217687-U - Liquid injection device

CN224217687UCN 224217687 UCN224217687 UCN 224217687UCN-224217687-U

Abstract

The application discloses a liquid injection device, and relates to the technical field of battery production. The electrolyte injection device is used for injecting the electrolyte into the battery cell and comprises a liquid storage cup, an electrolyte injection piece and an atomization mechanism, wherein the liquid storage cup is used for supplying the electrolyte, the electrolyte injection piece is suitable for being at least partially inserted into the battery cell, the atomization mechanism is arranged between the liquid storage cup and the electrolyte injection piece and is used for atomizing the electrolyte flowing through the liquid injection piece so as to inject the atomized electrolyte into the battery cell. Compared with the prior art, the electrolyte injection device does not need to be placed at a high temperature, saves the total time of injection, improves the injection efficiency, and improves the infiltration effect of the electrolyte.

Inventors

  • PENG YUHUI
  • LI HU

Assignees

  • 欣旺达动力科技股份有限公司

Dates

Publication Date
20260508
Application Date
20250529

Claims (10)

  1. 1. A priming device for annotating liquid to electric core (1), characterized in that includes: A liquid storage cup (2), wherein the liquid storage cup (2) is used for supplying electrolyte; -a liquid injector (3), said liquid injector (3) being adapted to be at least partially inserted into said electrical cell (1); The atomizing mechanism (4), atomizing mechanism (4) are located stock solution cup (2) with annotate between liquid spare (3), atomizing mechanism (4) are used for atomizing the electrolyte that flows through, in order to pass through annotate liquid spare (3) with electrolyte injection after the atomizing electricity core (1).
  2. 2. The liquid injection device according to claim 1, wherein the liquid injection member (3) is provided with a liquid injection channel (31), one end of the liquid injection member (3) away from the liquid storage cup (2) is provided with a spray hole (32), one end of the liquid injection member (3) provided with the spray hole (32) is suitable for being inserted into the battery cell (1), one end of the liquid injection channel (31) is communicated with the atomizing mechanism (4), the other end of the liquid injection channel (31) is communicated with the spray hole (32), and the spray hole (32) is used for spraying atomized electrolyte into the battery cell (1).
  3. 3. The priming device of claim 2, wherein one end of the priming member (3) away from the reservoir cup (2) is provided with a ball head (33), the ball head (33) is provided with a plurality of spray holes (32), and the plurality of spray holes (32) are arranged at intervals.
  4. 4. The priming device of claim 1, further comprising a first control member electrically connected to the atomizing mechanism (4), the first control member being adapted to control operation of the atomizing mechanism (4) and to adjust an operating mode of the atomizing mechanism (4), the atomizing mechanism (4) intermittently atomizing electrolyte in a first mode of the atomizing mechanism (4), and the atomizing mechanism (4) continuously atomizing electrolyte in a second mode of the atomizing mechanism (4).
  5. 5. The liquid injection device according to any one of claims 1 to 4, wherein the atomizing mechanism (4) comprises a body (41) and an atomizing member (42), one end of the body (41) is connected with the liquid storage cup (2), the other end of the body (41) is connected with the liquid injection member (3), the body (41) is provided with a communication cavity (411), the communication cavity (411) is communicated with the liquid storage cup (2) and the liquid injection member (3), the atomizing member (42) is arranged in the communication cavity (411), and the atomizing member (42) is used for atomizing electrolyte flowing through the communication cavity (411).
  6. 6. The priming device of claim 5, wherein the atomizing member (42) comprises any one of a piezoelectric atomizer, an ultrasonic atomizer, and a thermal bubble atomizer.
  7. 7. The priming device of any one of claims 1 to 4, further comprising a supporting assembly (5) and a heating element, wherein a receiving cavity (51) is provided in the supporting assembly (5), the receiving cavity (51) is used for placing the electric core (1), and the heating element is arranged on at least one side wall of the receiving cavity (51) and is used for heating the electric core (1).
  8. 8. The priming device of claim 7, further comprising a second control member electrically connected to the heating member, the second control member being adapted to control the start and stop of the heating member to heat the cells (1).
  9. 9. The priming device of claim 7, further comprising a gas circuit unit (6), wherein a retractable member (7) is arranged on at least one side wall of the accommodating cavity (51), a gas cavity (71) is formed in the retractable member (7), the gas circuit unit (6) is respectively communicated with the liquid storage cup (2) and the gas cavity (71), the gas circuit unit (6) is used for providing gas pressure for the liquid storage cup (2) and the gas cavity (71), the retractable member (7) can expand or shrink and deform along with the change of the gas pressure so as to squeeze and support the battery cell (1), and the heating member is arranged in the gas cavity (71).
  10. 10. The priming device of claim 9, wherein the gas circuit unit (6) comprises a gas source (61), a first pipeline (62) and a second pipeline (63), wherein one end of the first pipeline (62) is communicated with the gas source (61), the other end of the first pipeline (62) is communicated with the liquid storage cup (2), one end of the second pipeline (63) is communicated with the gas source (61), and the other end of the second pipeline (63) is communicated with the gas cavity (71).

Description

Liquid injection device Technical Field The application belongs to the technical field of battery production, and particularly relates to a liquid injection device. Background The battery liquid injection is one of key procedures in the production of lithium ion batteries, and directly affects the electrolyte wettability, the cycle life and the safety of the batteries. In the process of filling the battery, the electrolyte needs to fully infiltrate the electrode assembly, so that the electrochemical reaction is ensured to continuously occur, meanwhile, local overheating can be avoided, the cycle life of the battery is prolonged, and the like. In the related art, the immersion effect of the electrolyte is generally improved by means of vacuumizing, standing and the like, but the method has long time and poor immersion effect. Disclosure of utility model The application aims to provide a liquid injection device which can solve the problems that in the related art, the immersion effect of electrolyte is improved by means of vacuumizing, standing and the like, but the method is long in time and poor in immersion effect. In order to solve the technical problems, the application is realized as follows: In a first aspect, an embodiment of the present application provides a liquid injection device for injecting liquid into an electrical core, where the liquid injection device includes a liquid storage cup, where the liquid storage cup is used for supplying electrolyte; a fluid injector adapted to be at least partially inserted into the battery cell; The atomizing mechanism is arranged between the liquid storage cup and the liquid injection piece and is used for atomizing flowing electrolyte so as to inject the atomized electrolyte into the battery cell through the liquid injection piece. Optionally, the liquid injection piece is provided with a liquid injection channel, one end of the liquid injection piece, which is far away from the liquid storage cup, is provided with a spray hole, one end of the liquid injection piece, which is provided with the spray hole, is suitable for being inserted into the battery cell, one end of the liquid injection channel is communicated with the atomizing mechanism, the other end of the liquid injection channel is communicated with the spray hole, and the spray hole is used for spraying atomized electrolyte into the battery cell. Optionally, the one end that annotates the liquid spare and keep away from the stock solution cup is equipped with the bulb portion, the bulb portion is equipped with a plurality of the orifice, a plurality of the orifice interval is arranged. Optionally, the priming device further includes a first control element, the first control element is electrically connected with the atomization mechanism, the first control element is used for controlling operation of the atomization mechanism and adjusting an operating mode of the atomization mechanism, the atomization mechanism intermittently atomizes the electrolyte when the atomization mechanism is in a first mode, and the atomization mechanism continuously atomizes the electrolyte when the atomization mechanism is in a second mode. Optionally, the atomization mechanism comprises a body and an atomization piece, wherein one end of the body is connected with the liquid storage cup, the other end of the body is connected with the liquid injection piece, the body is provided with a communication cavity, the communication cavity is communicated with the liquid storage cup and the liquid injection piece, the atomization piece is arranged in the communication cavity, and the atomization piece is used for atomizing electrolyte flowing through the communication cavity. Optionally, the atomizer comprises any one of a piezoelectric atomizer, an ultrasonic atomizer and a thermal bubble atomizer. Optionally, the priming device further includes supporting component and heating piece, be equipped with in the supporting component and hold the chamber, hold the chamber and be used for placing the electric core, the heating piece is located hold on the at least one lateral wall in chamber, the heating piece is used for right the electric core heats. Optionally, the priming device further includes a second control element, the second control element is electrically connected with the heating element, and the second control element is used for controlling start and stop of the heating element so as to heat the electric core. Optionally, the priming device further comprises a gas circuit unit, a telescopic piece is arranged on at least one side wall of the accommodating cavity, a gas cavity is formed in the telescopic piece, the gas circuit unit is respectively communicated with the liquid storage cup and the gas cavity, the gas circuit unit is used for providing gas pressure for the liquid storage cup and the gas cavity, the telescopic piece can expand or shrink and deform along with the change of the gas pressure so as to squeeze