Liquid injection vacuum standing device

Abstract

The utility model relates to the technical field of battery preparation, and discloses a liquid injection vacuum standing device which comprises a supporting mechanism, a liquid injection platform is arranged on the supporting mechanism, the liquid injection platform is used for placing a liquid injection tray, and the liquid injection tray is used for loading a plurality of batteries to be subjected to liquid injection; the liquid injection mechanism comprises a liquid injection needle tube and a position adjusting assembly, and the position adjusting assembly is used for driving the liquid injection needle tube to perform liquid injection operation on the plurality of batteries to be subjected to liquid injection one by one; the vacuum standing mechanism is suspended above the liquid injection table through the supporting mechanism, the vacuum standing mechanism comprises a lifting driving assembly and a vacuum cover, the lifting driving assembly is used for driving the vacuum cover to ascend and descend, and after the liquid injection operation is completed, the vacuum cover is driven by the lifting driving assembly to ascend and descend. The lifting driving assembly drives the vacuum cover to cover the liquid injection tray so as to complete vacuum standing operation, and therefore the liquid injection amount consistency and the liquid injection efficiency are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of battery preparation, in particular to a liquid injection vacuum static device. Background Art

[0002] Existing automatic liquid filling equipment with vacuum standing is generally an automated production line, which is suitable for mass production of batteries. In the early research and development stage, small or pilot tests, manual liquid filling and natural standing operations are generally used. Obviously, the consistency of the liquid filling volume in manual liquid filling operations is poor, which affects the battery performance test results. In addition, when the sample volume of the small or pilot test is large (such as one hundred or two hundred), when all the batteries are filled and then transferred to the lid sealing device for sealing, the time interval between the liquid filling time of the first battery sample and the liquid filling time of the last battery sample is relatively long, and the electrolyte may evaporate or absorb moisture, etc., resulting in further reduction in the consistency of the liquid filling volume of the same batch of batteries, which is not conducive to the data statistical analysis of the battery development process and directly affects the progress of battery development. Utility Model Content

[0003] The utility model aims to overcome the shortcomings of the prior art and provide a liquid injection vacuum static device.

[0004] The purpose of this utility model is achieved through the following technical solutions:

[0005] A liquid injection vacuum static device, comprising:

[0006] A supporting mechanism, wherein a liquid injection platform is provided on the supporting mechanism, the liquid injection platform is used to place a liquid injection tray, and the liquid injection tray is used to load a plurality of batteries to be injected;

[0007] A liquid injection mechanism, the liquid injection mechanism comprising a liquid injection needle and a position adjustment component, the position adjustment component is used to drive the liquid injection needle to perform liquid injection operations on the plurality of batteries to be injected one by one;

[0008] A vacuum stilling mechanism, wherein the vacuum stilling mechanism is suspended above the liquid injection table through the supporting mechanism, and the vacuum stilling mechanism comprises a lifting drive assembly and a vacuum cover, wherein the lifting drive assembly is used to drive the vacuum cover to lift and move, and when the liquid injection operation is completed, the lifting drive assembly drives the vacuum cover to cover the liquid injection tray to complete the vacuum stilling operation.

[0009] In one embodiment, a sealing ring is arranged around the open end of the vacuum cover.

[0010] In one embodiment, the support mechanism further includes a support rod and a mounting plate, the mounting plate is disposed on the liquid injection table via the support rod, and the lifting drive assembly is disposed on the mounting plate.

[0011] In one embodiment, the lifting drive assembly includes a lifting cylinder and a plurality of guide rods, the lifting cylinder is arranged on the mounting plate, the output end of the lifting cylinder is connected to the vacuum cover, the mounting plate is provided with a plurality of guide holes, one end of a plurality of the guide rods are respectively connected to the vacuum cover, and the other ends of the plurality of the guide rods are respectively penetrated through the guide holes and slidably connected to the mounting plate.

[0012] In one embodiment, the position adjustment component includes an x-axis drive, a y-axis drive and a z-axis drive, the y-axis drive is arranged on the x-axis drive, the z-axis drive is arranged on the y-axis drive, the injection syringe is arranged on the z-axis drive, and the x-axis drive, y-axis drive and z-axis drive cooperate to control the movement of the injection syringe along the x-axis, y-axis and z-axis.

[0013] In one embodiment, the x-axis driving component is a first slide linear motor, the y-axis driving component is a second slide linear motor, one end of the second slide linear motor is vertically arranged on the slide of the first slide linear motor, the z-axis driving component is a slide cylinder, the slide cylinder is installed on the slide of the second slide linear motor, and a connecting plate is arranged at the output end of the slide cylinder, and the injection needle is arranged on the connecting plate.

[0014] In one embodiment, a vacuum duct is provided on the vacuum cover, and the vacuum duct is used to connect to an external vacuum equipment.

[0015] In one embodiment, a limiting component is provided on the liquid filling platform, and the limiting component is used to limit and fix the liquid filling tray.

[0016] In one embodiment, the limiting component includes a first limiting strip and two second limiting strips, and the two second limiting strips and the first limiting strip together form a U-shaped limiting area, and the liquid filling tray enters the limiting area along the two second limiting strips until the liquid filling tray abuts against the first limiting strip.

[0017] In one embodiment, a plurality of rows of receiving slots are arranged equidistantly on the liquid filling tray, the receiving slots in each row are arranged equidistantly, each receiving slot is used to place a battery to be filled with liquid, and the liquid filling mechanism includes a plurality of liquid filling syringes, the plurality of liquid filling syringes are arranged equidistantly, and the distance between each two adjacent liquid filling syringes is the same as the distance between each two adjacent receiving slots.

[0018] Compared with the prior art, the utility model has at least the following advantages:

[0019] The utility model mainly provides a liquid injection vacuum standing device, which is mainly used for battery liquid injection and vacuum standing, and mainly comprises a supporting mechanism, a liquid injection mechanism and a vacuum standing mechanism, wherein the supporting mechanism is mainly used for suspending the vacuum standing mechanism and placing a liquid injection tray, the liquid injection mechanism is used for performing liquid injection operations on the batteries to be injected on the liquid injection tray one by one, and the vacuum standing mechanism is provided with a vacuum cover, and after the liquid injection operation is completed, the vacuum cover covers the liquid injection tray to complete the vacuum standing operation, and the liquid injection vacuum standing device can complete automatic liquid injection operation and vacuum standing operation, thereby ensuring the purity and infiltration effect of the electrolyte, accelerating the production rhythm, and improving the consistency of the liquid injection amount and the liquid injection efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 This is a schematic structural diagram of a liquid injection vacuum static device according to one embodiment of the utility model;

[0022] Figure 2 This is a schematic structural diagram of a liquid injection vacuum static device according to one embodiment of the utility model;

[0023] Figure 3 It is a schematic structural diagram of a liquid injection vacuum static device according to one embodiment of the utility model.

[0024] The numbers in the figure are: 10, liquid injection vacuum standing device; 100, supporting mechanism; 110, liquid injection table; 111, limiting component; 1111, first limiting strip; 1112, second limiting strip; 120, supporting rod; 130, mounting plate; 200, liquid injection mechanism; 210, liquid injection needle; 220, position adjustment component; 221, x-axis driving member; 222, y-axis driving member; 223, z-axis driving member; 300, vacuum standing mechanism; 310, lifting driving component; 311, lifting cylinder; 312, guide rod; 320, vacuum cover; 321, sealing ring; 322, vacuum pipe; 323, inflation pipe; 400, liquid injection tray; 410, accommodating tank. DETAILED DESCRIPTION

[0025] In order to facilitate the understanding of the present invention, the present invention will be described more comprehensively with reference to the relevant drawings. The drawings provide preferred embodiments of the present invention. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thoroughly and comprehensively understood.

[0026] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

[0027] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0028] See also Figures 1 to 3 A liquid injection vacuum static device (10) comprises: a support mechanism (100), a liquid injection mechanism (200) and a vacuum static mechanism (300), wherein the support mechanism (100) is provided with a liquid injection platform (110), the liquid injection platform (110) is used to place a liquid injection tray (400), and the liquid injection tray (400) is used to load a plurality of batteries to be injected; the liquid injection mechanism (200) comprises a liquid injection needle tube (210) and a position adjustment component (220), and the position adjustment component (220) is used to drive the liquid injection needle tube (210) to move the liquid injection needle tube (210) and the position adjustment component (2 ... 0) performing liquid injection operations one by one on a plurality of batteries to be injected; a vacuum static mechanism (300) is suspended above a liquid injection platform (110) via a support mechanism (100); the vacuum static mechanism (300) comprises a lifting drive component (310) and a vacuum cover (320); the lifting drive component (310) is used to drive the vacuum cover (320) to lift and move; after the liquid injection operation is completed, the lifting drive component (310) drives the vacuum cover (320) to cover the liquid injection tray (400) to complete the vacuum static operation.

[0029] It should be noted that after the battery filling process, the electrolyte needs to be fully infiltrated before the lid is closed and sealed, otherwise the battery cell will not be fully infiltrated or the electrolyte will leak out during sealing. After the existing manual filling process, a natural standing method is generally used to wait for infiltration. When the injection amount is large or the battery height is large, it may be difficult to eliminate the bubbles at the bottom of the battery by the natural standing method, resulting in insufficient infiltration. The single injection infiltration time and the waiting time between the second injection are too long, which directly leads to a decrease in the injection efficiency. At the same time, as mentioned above, the injection amount consistency of the manual injection operation is low, and the manual injection efficiency is low, which will cause the electrolyte of the battery injected first to volatilize, further affecting the injection amount. Therefore, the present application mainly provides a liquid injection vacuum standing device (10) suitable for small-batch battery production. The device has a compact structure, small footprint, low equipment cost, and high feasibility of developing and configuring the device. At the same time, the device can realize automatic injection and vacuum standing functions, which can greatly improve the injection efficiency and solve the problem of poor consistency of manual injection amount, which is conducive to data analysis in the battery research and development process and accelerates the battery development speed.

[0030] See also Figures 1 to 3 Furthermore, a sealing ring (321) is arranged around the opening end of the vacuum cover (320).

[0031] It should be noted that, after the liquid injection operation is completed, the lifting drive assembly (310) drives the vacuum cover (320) to move downward until the vacuum cover (320) covers the liquid injection tray (400) and is sealed with the liquid injection platform (110), wherein the sealing ring (321) can improve the sealing between the vacuum cover (320) and the liquid injection platform (110), so that a closed space is formed inside the vacuum cover (320), which is conducive to improving the vacuum extraction speed; wherein, the sealing ring (321) can be made of materials such as silicone, natural rubber, fluororubber, polyurethane rubber, etc.

[0032] See also Figures 1 to 3 The support mechanism (100) further comprises a support rod (120) and a mounting plate (130), wherein the mounting plate (130) is arranged on the injection platform (110) via the support rod (120), and the lifting drive assembly (310) is arranged on the mounting plate (130).

[0033] In one embodiment, the support mechanism (100) includes four support rods (120), which are distributed at four end corners of the liquid injection platform (110), and the other ends of the four support rods (120) are respectively connected to the four end corners of the mounting plate (130), so that the mounting plate (130) is stably arranged above the liquid injection platform (110), thereby improving the installation stability of the lifting drive assembly (310).

[0034] See also Figures 1 to 3Furthermore, the lifting drive assembly (310) includes a lifting cylinder (311) and a plurality of guide rods (312). The lifting cylinder (311) is arranged on the mounting plate (130). The output end of the lifting cylinder (311) is connected to the vacuum cover (320). The mounting plate (130) is provided with a plurality of guide holes. One end of the plurality of guide rods (312) is respectively connected to the vacuum cover (320), and the other ends of the plurality of guide rods (312) are respectively penetrated through the guide holes and slidably connected to the mounting plate (130).

[0035] It should be noted that, in one embodiment, four guide rods (312) are distributed at the four end corners of the vacuum cover (320). When the lifting drive assembly (310) drives the vacuum cover (320) to move up and down, the guide rods (312) slide along the guide holes, thereby improving the movement stability of the vacuum cover (320).

[0036] See also Figures 1 to 3 Furthermore, the position adjustment component (220) includes an x-axis driving component (221), a y-axis driving component (222) and a z-axis driving component (223), the y-axis driving component (222) is arranged on the x-axis driving component (221), the z-axis driving component (223) is arranged on the y-axis driving component (222), the injection needle tube (210) is arranged on the z-axis driving component (223), and the x-axis driving component (221), the y-axis driving component (222) and the z-axis driving component (223) cooperate to control the injection needle tube (210) to move along the x-axis, y-axis and z-axis. In one embodiment, the x-axis driving member (221) is a first slide linear motor, the y-axis driving member (222) is a second slide linear motor, one end of the second slide linear motor is vertically arranged on the slide of the first slide linear motor, the z-axis driving member (223) is a slide cylinder, the slide cylinder is installed on the slide of the second slide linear motor, a connecting plate is arranged at the output end of the slide cylinder, and the injection needle tube (210) is arranged on the connecting plate. The y-axis driving member (222) is stably connected to the x-axis driving member (221) through a support frame and is suspended above the injection platform (110).

[0037] In this way, the position adjustment component (220) can drive the injection needle tube (210) to inject liquid into the batteries to be injected on the injection tray (400) one by one and row by row, thereby realizing automatic injection operation of the batteries and improving injection efficiency and injection volume consistency.

[0038] See also Figures 1 to 3 Furthermore, a vacuum duct (322) is provided on the vacuum cover (320), and the vacuum duct (322) is used to connect to an external vacuum device.

[0039] It should be noted that when the vacuum cover (320) is sealed and fitted with the injection platform (110), the external vacuum pumping device is started, and the internal space of the vacuum cover (320) is vacuumed through the vacuum pumping pipe (322), so that the air inside the vacuum cover (320) is pumped away, thereby preventing the electrolyte from absorbing moisture from the air during the static process. At the same time, the air in the interlayer of the battery cell can be discharged from the internal space of the vacuum cover (320), thereby improving the infiltration effect of the electrolyte; further, the vacuum cover (320) also includes an inflation pipe (323). When the vacuum pumping operation is completed, nitrogen can be injected through the inflation pipe (323) to pressurize the internal space of the vacuum cover (320), thereby improving the infiltration efficiency of the electrolyte, shortening the static time, and also playing a role in breaking the vacuum.

[0040] See also Figures 1 to 3 Furthermore, a limiting component (111) is provided on the liquid injection platform (110), and the limiting component (111) is used to limit and fix the liquid injection tray (400). In this way, the limiting component (111) can ensure the stability of the liquid injection tray (400) on the liquid injection platform (110), so that the liquid injection tray (400) will not be displaced during the liquid injection process, and the alignment accuracy of the liquid injection needle tube (210) and the liquid injection tray (400) is guaranteed, thereby avoiding leakage caused by inaccurate alignment.

[0041] See also Figures 1 to 3 Furthermore, the limiting component (111) includes a first limiting strip (1111) and two second limiting strips (1112), the two second limiting strips (1112) and the first limiting strip (1111) are combined to form a U-shaped limiting area, and the liquid injection tray (400) enters the limiting area along the two second limiting strips (1112) until the liquid injection tray (400) abuts against the first limiting strip (1111). In this way, not only can the consistency of the position of the liquid injection tray (400) be guaranteed, and the alignment accuracy of the liquid injection mechanism (200) and the liquid injection tray (400) be improved, but also the rapid loading of the liquid injection tray (400) can be achieved, simplifying the loading process.

[0042] See also Figures 1 to 3 Furthermore, a plurality of rows of receiving grooves (410) are arranged at equal intervals on the injection tray (400), the receiving grooves (410) in each row are arranged at equal intervals, each receiving groove (410) is used to place a battery to be injected, and the injection mechanism (200) includes a plurality of injection needle tubes (210), the plurality of injection needle tubes (210) are arranged at equal intervals, and the distance between each two adjacent injection needle tubes (210) is the same as the distance between each two adjacent receiving grooves (410). In this way, injection operations can be performed on a plurality of batteries to be injected at the same time, thereby increasing the injection speed.

[0043] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A liquid injection vacuum static device, characterized in that: include: A supporting mechanism, wherein a liquid injection platform is provided on the supporting mechanism, the liquid injection platform is used to place a liquid injection tray, and the liquid injection tray is used to load a plurality of batteries to be injected; A liquid injection mechanism, the liquid injection mechanism comprising a liquid injection needle and a position adjustment component, the position adjustment component is used to drive the liquid injection needle to perform liquid injection operations on the plurality of batteries to be injected one by one; A vacuum stilling mechanism, wherein the vacuum stilling mechanism is suspended above the liquid injection table through the supporting mechanism, and the vacuum stilling mechanism comprises a lifting drive assembly and a vacuum cover, wherein the lifting drive assembly is used to drive the vacuum cover to lift and move, and after the liquid injection operation is completed, the lifting drive assembly drives the vacuum cover to cover the liquid injection tray to complete the vacuum stilling operation; the supporting mechanism also comprises a support rod and a mounting plate, wherein the mounting plate is arranged on the liquid injection table through the support rod, and the lifting drive assembly is arranged on the mounting plate; the lifting drive assembly comprises a lifting cylinder and a plurality of guide rods, wherein the lifting cylinder is arranged on the mounting plate, and the output end of the lifting cylinder is connected to the vacuum cover, and the mounting plate is provided with a plurality of guide holes, wherein one end of a plurality of the guide rods is respectively connected to the vacuum cover, and the other end of a plurality of the guide rods is respectively connected to the guide holes penetrated and slidably connected to the mounting plate.

2. The liquid injection vacuum static device according to claim 1, characterized in that: A sealing ring is arranged around the opening end of the vacuum cover.

3. The liquid injection vacuum static device according to claim 1, characterized in that: The position adjustment component includes an x-axis drive, a y-axis drive and a z-axis drive, the y-axis drive is arranged on the x-axis drive, the z-axis drive is arranged on the y-axis drive, the injection syringe is arranged on the z-axis drive, and the x-axis drive, y-axis drive and z-axis drive cooperate to control the injection syringe to move along the x-axis, y-axis and z-axis.

4. The liquid injection vacuum static device according to claim 3, characterized in that: The x-axis driving component is a first slide linear motor, the y-axis driving component is a second slide linear motor, one end of the second slide linear motor is vertically arranged on the slide of the first slide linear motor, the z-axis driving component is a slide cylinder, the slide cylinder is installed on the slide of the second slide linear motor, and a connecting plate is arranged at the output end of the slide cylinder, and the injection needle is arranged on the connecting plate.

5. The liquid injection vacuum static device according to claim 1, characterized in that: The vacuum cover is provided with a vacuum pipe, and the vacuum pipe is used to be connected to an external vacuum device.

6. The liquid injection vacuum static device according to claim 1, characterized in that: The liquid injection platform is provided with a limiting component, and the limiting component is used to limit and fix the liquid injection tray.

7. The liquid injection vacuum static device according to claim 6, characterized in that: The limiting component includes a first limiting strip and two second limiting strips. The two second limiting strips and the first limiting strip together form a U-shaped limiting area. The liquid filling tray enters the limiting area along the two second limiting strips until the liquid filling tray abuts against the first limiting strip.

8. The liquid injection vacuum static device according to claim 3, characterized in that: The liquid filling tray is provided with a plurality of rows of accommodating grooves arranged at equal intervals, the accommodating grooves in each row are arranged at equal intervals, each accommodating groove is used to place a battery to be filled with liquid, the liquid filling mechanism comprises a plurality of liquid filling syringes, the plurality of liquid filling syringes are arranged at equal intervals, and the distance between each adjacent two liquid filling syringes is the same as the distance between each adjacent two accommodating grooves.

Images