Liquid injection device of lithium ion battery

Abstract

The utility model discloses a liquid injection device of a lithium ion battery, which relates to the technical field of lithium battery liquid injection and comprises a base, a liquid storage tank and a liquid injection mechanism are arranged on the base, the liquid storage tank is fixedly connected with the surface of one side of the base, and the liquid injection mechanism is matched with the liquid storage tank. Liquid injection can be conducted on the lithium battery through the liquid injection mechanism, along with increase of liquid, the lithium battery can drive the bearing base to move downwards continuously, when the bearing base descends to make contact with the contact switch, the battery reaches the rated liquid injection amount, the motor can be started to work through the contact switch, the motor drives the disc to rotate, and the lithium battery can be charged. And in the position changing process, a plurality of liquid receiving boxes can be used for collecting residual liquid at the liquid injection end part, so that the situation that subsequent cleaning is influenced, waste is easily caused and the cost is not favorably saved due to the fact that the residual liquid drips onto the surface of the disc when the position is changed is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of lithium battery liquid injection, in particular to a liquid injection device for a lithium ion battery. Background Art

[0002] The electrolyte of a lithium battery is the carrier of ion transmission in the battery; it is generally composed of lithium salts and organic solvents; the electrolyte plays the role of conducting ions between the positive and negative electrodes of the lithium battery, and is the guarantee for the lithium-ion battery to obtain advantages such as high voltage and high specific energy; the electrolyte is generally composed of high-purity organic solvents, electrolyte lithium salts, necessary additives and other raw materials, prepared under certain conditions and in a certain proportion. In the actual production process, the lithium battery needs to be injected with electrolyte.

[0003] The announcement number is CN219513304U, which discloses a sealed quantitative liquid injection device for a lithium battery, including a base, a positioning groove is provided at the center position of the top of the base, the top of the base is fixedly connected to a top plate by a support rod, the bottom center position of the top plate is connected to a liquid storage columnar tube, a piston plate is provided in the liquid storage columnar tube, and the top center position of the piston plate is connected to a cylinder.

[0004] However, the above structure still has some shortcomings. During the use of the device, when the injection is completed, since the closing device in the injection nozzle (the closing device is similar to the component that realizes the quantitative injection of the device) is a certain distance away from the injection nozzle end, when the closing device is closed, a part of the liquid will be affected by the tension of the inner wall of the injection nozzle and remain on the inner wall of the injection nozzle port, which further causes part of the liquid to remain at the injection nozzle end, and under the action of gravity, the liquid will flow out, which is easy to cause material waste and affect the safe use of the device. Manual cleaning of the outflowing liquid is required on a regular basis, which increases the work pressure of the workers, so it needs to be improved. Utility Model Content

[0005] In order to solve the above technical problems, the utility model is realized by the following technical solutions:

[0006] The utility model is a liquid injection device for lithium-ion batteries, comprising a machine base, a liquid storage box and a liquid injection mechanism are arranged on the machine base, the liquid storage box is fixedly connected to the surface of one side of the machine base, the liquid injection mechanism is adapted to the liquid storage box, and a conversion unit is arranged on the machine base;

[0007] The conversion unit comprises a mounting groove, a motor and a contact switch. The mounting groove is arranged on the surface of the base, the motor is fixedly installed in the mounting groove, the contact switch is arranged on the surface of the base, and the contact switch is adapted to the motor.

[0008] Preferably, the conversion unit further comprises a rotating groove and a disc, the rotating groove is arranged on the surface of the base, and the disc is fixedly connected to the output end of the motor.

[0009] Preferably, the conversion unit further includes two receiving legs and a plurality of liquid receiving boxes, the two receiving legs are both fixedly connected to the disc, the two receiving legs are both rotatably connected to the rotating groove, and the plurality of liquid receiving boxes are all fixedly connected to the surface of the disc.

[0010] Preferably, the conversion unit further comprises a plurality of connecting tubes and a liquid collecting cylinder, the plurality of connecting tubes are respectively connected to the corresponding liquid receiving boxes, the liquid collecting cylinder is fixedly mounted on the surface of the disc, and the plurality of connecting tubes are all connected to the liquid collecting cylinder.

[0011] Preferably, the conversion unit further includes a liquid pump, which is fixedly mounted on the surface of the liquid collecting barrel, and a liquid inlet end of the liquid pump is connected to the liquid collecting barrel.

[0012] Preferably, the conversion unit also includes a plurality of receiving seats and a plurality of receiving rods, the plurality of receiving seats are all arranged below the disc, the plurality of receiving rods are respectively fixedly connected to the corresponding receiving seats in pairs, and the plurality of receiving rods are all slidably connected to the disc.

[0013] Preferably, the conversion unit also includes a plurality of telescopic springs, which are respectively slidably connected to the corresponding receiving rods, one ends of the plurality of telescopic springs are respectively fixedly connected to the bottom of the disc, and the other ends of the plurality of telescopic springs are respectively fixedly connected to the corresponding receiving seats.

[0014] The utility model has the following beneficial effects:

[0015] The lithium battery can be injected with liquid through the injection mechanism. As the liquid increases, the lithium battery will drive the receiving seat to move downward continuously. When the receiving seat drops to contact with the contact switch, the battery reaches the rated injection volume. The motor can be started through the contact switch, and the motor drives the disc to rotate, which is convenient for switching to the lithium battery of the next station for injection operation. During the switching process, multiple liquid receiving boxes can collect the residual liquid at the injection end to prevent the residual liquid from dripping onto the surface of the disc when changing the station, which not only affects the subsequent cleaning, but also easily causes waste, which is not conducive to cost saving.

[0016] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 It is a three-dimensional structural schematic diagram of a liquid injection device for a lithium-ion battery of the utility model;

[0019] Figure 2 It is a partial structural schematic diagram of the base and the conversion unit in the utility model;

[0020] Figure 3 It is a schematic diagram of partial structural connection of the conversion unit in the utility model;

[0021] Figure 4 It is a schematic diagram of the structural connection of the receiving seat, the receiving rod and the telescopic spring in the utility model.

[0022] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0023] 1. Machine base; 2. Liquid storage tank; 3. Liquid injection mechanism; 4. Conversion unit; 401. Mounting slot; 402. Motor; 403. Contact switch; 404. Rotating slot; 405. Disc; 406. Receiver leg; 407. Liquid receiving box; 408. Connecting pipe; 409. Liquid collecting cylinder; 410. Liquid pump; 411. Receiver seat; 412. Receiver rod; 413. Telescopic spring. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] See also Figure 1-4 As shown, the utility model is a liquid injection device for a lithium-ion battery, comprising a base 1, a liquid storage tank 2 and a liquid injection mechanism 3 are arranged on the base 1, the liquid storage tank 2 is fixedly connected to the surface of one side of the base 1, the liquid injection mechanism 3 is adapted to the liquid storage tank 2, and a conversion unit 4 is arranged on the base 1. More specifically, the structural arrangement of the liquid injection mechanism 3 is similar to the working principles of the cylinder, piston plate, liquid storage cylindrical barrel, liquid injection solenoid valve, first solenoid valve and other structures in the comparative document, and the liquid injection operation is performed by the piston pneumatic pushing mode, which is a prior art and will not be described in detail here;

[0026] Among them, the conversion unit 4 includes a mounting groove 401, a motor 402 and a contact switch 403. The mounting groove 401 is opened on the surface of the base 1, the motor 402 is fixedly installed in the mounting groove 401, and the contact switch 403 is arranged on the surface of the base 1. The contact switch 403 is adapted to the motor 402. More specifically, the motor 402 and the contact switch 403 are connected in series through a wire. By controlling the opening and closing of the contact switch 403, the motor 402 can be started for transmission, so that the motor 402 can drive the disc 405 to convert to the next station to inject liquid into the lithium battery placed at the next station.

[0027] Furthermore, the conversion unit 4 also includes a rotating groove 404 and a disc 405. The rotating groove 404 is opened on the surface of the base 1, and the disc 405 is fixedly connected to the output end of the motor 402. More specifically, a plurality of circular openings are opened on the surface of the disc 405, and the plurality of circular openings are adapted to the lithium batteries that need to be filled with liquid, so as to facilitate the limiting of the lithium batteries.

[0028] Furthermore, the conversion unit 4 also includes two receiving legs 406 and multiple liquid receiving boxes 407. The two receiving legs 406 are fixedly connected to the disc 405, and the two receiving legs 406 are rotatably connected to the rotating groove 404. The multiple liquid receiving boxes 407 are fixedly connected to the surface of the disc 405. More specifically, the two receiving legs 406 can support the disc 405. By making the two receiving legs 406 rotate in the rotating groove 404, it is beneficial to improve the stability of the disc 405 during conversion. During conversion, the multiple liquid receiving boxes 407 can collect the liquid remaining at the injection end to prevent the residual liquid from dripping directly onto the surface of the disc 405, which is beneficial to keeping the surface of the disc 405 clean and avoiding waste of resources.

[0029] Furthermore, the conversion unit 4 also includes a plurality of connecting tubes 408 and a liquid collecting cylinder 409, and the plurality of connecting tubes 408 are respectively connected to the corresponding liquid receiving boxes 407, the liquid collecting cylinder 409 is fixedly mounted on the surface of the disc 405, and the plurality of connecting tubes 408 are all connected to the liquid collecting cylinder 409. The conversion unit 4 also includes a liquid pump 410, which is fixedly mounted on the surface of the liquid collecting cylinder 409, and the liquid inlet end of the liquid pump 410 is connected to the liquid collecting cylinder 409. More specifically, when a large amount of liquid is collected in the plurality of liquid receiving boxes 407, a catheter can be connected to the liquid outlet end of the liquid pump 410, and one end of the catheter can be connected to the liquid storage tank 2, and the liquid pump 410 can be started. The liquid in the liquid receiving boxes 407 can be pumped into the liquid collecting cylinder 409 through the corresponding connecting tubes 408, and then pumped out through the catheter in the liquid collecting cylinder 409 connected to the liquid inlet end of the liquid pump 410, and finally transported to the liquid storage tank 2 for recycling to avoid waste of resources.

[0030] Furthermore, the conversion unit 4 also includes a plurality of receiving seats 411 and a plurality of receiving rods 412. The plurality of receiving seats 411 are all arranged below the disc 405. The plurality of receiving rods 412 are respectively fixedly connected to the corresponding receiving seats 411 in pairs. The plurality of receiving rods 412 are all slidably connected to the disc 405. More specifically, by making the receiving rods 412 slidably connected to the inside of the disc 405, a guiding effect can be played, so that the receiving seat 411 can be kept stable when it is lowered, so that the receiving seat 411 can be accurately lowered. It is in contact with the contact switch 403, so that the contact switch 403 is touched to start the motor 402 for transmission. When the motor 402 is working, the liquid receiving box 407 can be quickly rotated to the next station. When the liquid receiving box 407 rotates, since the liquid receiving box 407 is close to the circular opening for placing the battery, in actual operation, liquid will not drip on the disc 405 and the side wall of the liquid receiving box 407. This is the situation of the prior art operation and will not be described in detail here.

[0031] Furthermore, the conversion unit 4 also includes a plurality of telescopic springs 413, which are respectively slidably connected to the corresponding receiving rods 412, one ends of the plurality of telescopic springs 413 are fixedly connected to the bottom of the disc 405, and the other ends of the plurality of telescopic springs 413 are respectively fixedly connected to the corresponding receiving seats 411. More specifically, the telescopic springs 413 can provide elastic force for the receiving seat 411, so that the receiving seat 411 can cooperate with the receiving rod 412 to support the lithium battery.

[0032] A specific application of this embodiment is: when the device is needed, multiple lithium batteries are respectively passed through the circular openings on the surface of the disc 405 and placed on the corresponding receiving seats 411, and the lithium batteries can be injected through the injection mechanism 3. As the liquid increases, the lithium batteries will drive the receiving seats 411 to move downward continuously. When the receiving seats 411 drop to contact the contact switch 403, the battery reaches the rated injection volume. The motor 402 can be started through the contact switch 403, and the motor 402 drives the disc 405 to rotate, so as to switch to the next station for lithium battery injection operation. During the switching process, multiple liquid receiving boxes 407 can collect the liquid remaining at the injection end to prevent the residual liquid from dripping onto the surface of the disc 405 when the station is changed, which not only affects the subsequent cleaning, but also easily causes waste, which is not conducive to cost saving.

[0033] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0034] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A lithium-ion battery injection device, comprising a base (1), characterized in that: The machine base (1) is provided with a liquid storage tank (2) and a liquid injection mechanism (3); the liquid storage tank (2) is fixedly connected to a surface of one side of the machine base (1); the liquid injection mechanism (3) is adapted to the liquid storage tank (2); and the machine base (1) is provided with a conversion unit (4); The conversion unit (4) comprises a mounting groove (401), a motor (402) and a contact switch (403); the mounting groove (401) is provided on the surface of the base (1); the motor (402) is fixedly mounted in the mounting groove (401); the contact switch (403) is arranged on the surface of the base (1); and the contact switch (403) is adapted to the motor (402).

2. A lithium ion battery injection device according to claim 1, characterized in that: The conversion unit (4) further comprises a rotating groove (404) and a disc (405); the rotating groove (404) is provided on the surface of the machine base (1); and the disc (405) is fixedly connected to the output end of the motor (402).

3. A lithium ion battery injection device according to claim 2, characterized in that: The conversion unit (4) further comprises two receiving legs (406) and a plurality of liquid receiving boxes (407); the two receiving legs (406) are fixedly connected to the disc (405); the two receiving legs (406) are rotatably connected to the rotating groove (404); and the plurality of liquid receiving boxes (407) are fixedly connected to the surface of the disc (405).

4. A lithium ion battery injection device according to claim 3, characterized in that: The conversion unit (4) further comprises a plurality of connecting tubes (408) and a liquid collecting cylinder (409); the plurality of connecting tubes (408) are respectively connected to corresponding liquid receiving boxes (407); the liquid collecting cylinder (409) is fixedly mounted on the surface of the disc (405); and the plurality of connecting tubes (408) are all connected to the liquid collecting cylinder (409).

5. A lithium ion battery injection device according to claim 4, characterized in that: The conversion unit (4) further comprises a liquid extraction pump (410), wherein the liquid extraction pump (410) is fixedly mounted on the surface of the liquid collecting cylinder (409), and a liquid inlet end of the liquid extraction pump (410) is connected to the liquid collecting cylinder (409).

6. A lithium ion battery injection device according to claim 5, characterized in that: The conversion unit (4) further comprises a plurality of receiving seats (411) and a plurality of receiving rods (412); the plurality of receiving seats (411) are all arranged below the disc (405); the plurality of receiving rods (412) are respectively fixedly connected to corresponding receiving seats (411) in pairs; and the plurality of receiving rods (412) are all slidably connected to the disc (405).

7. A lithium ion battery injection device according to claim 6, characterized in that: The conversion unit (4) further comprises a plurality of telescopic springs (413), wherein the plurality of telescopic springs (413) are respectively slidably connected to corresponding receiving rods (412), one end of the plurality of telescopic springs (413) are respectively fixedly connected to the bottom of the disc (405), and the other ends of the plurality of telescopic springs (413) are respectively fixedly connected to corresponding receiving seats (411).

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