CN218919249U - Battery priming device - Google Patents

Abstract

The utility model provides a battery liquid injection device, which comprises a liquid injection cup and a liquid injection nozzle; There is a first communication channel that can communicate the cavity with the external vacuum equipment, and a second communication channel that can communicate the cavity with the external electrolyte replenishment equipment; the liquid injection nozzle is located at the bottom of the cup body, and the liquid injection nozzle and the cup A communication pipe is detachably provided between the bodies, and the liquid injection nozzle is connected with the cavity through the communication pipe. The battery liquid injection device described in the utility model can improve the integration of the liquid injection cup and reduce the parts of the liquid injection cup, so that the overall sealing of the liquid injection cup is better, the stability of the liquid injection is improved, and the connecting pipe can be disassembled. , to facilitate the disassembly and assembly of the liquid injection nozzle and the connecting pipe, which is beneficial to the repair and maintenance of the battery liquid injection device, and can improve the practicality.

Description

Battery injection device

technical field

The utility model relates to the technical field of battery liquid injection, in particular to a battery liquid injection device.

Background technique

In the battery liquid injection equipment in the prior art, during the liquid injection process, because the electrolyte has a corrosive effect on the seal in the liquid injection cup, it is easy to cause the seal to age, thereby affecting the instability of the liquid injection process. Moreover, after continuous liquid injection, due to the corrosive effect of the electrolyte, it is necessary to clean and replace the liquid injection nozzle and the sealing ring of the liquid injection cup body, resulting in high cost of use, and there is also the problem that the disassembly of the liquid injection nozzle and the sealing ring remains unchanged. The problem.

Utility model content

In view of this, the utility model aims to provide a battery liquid injection device, which can improve the stability of liquid injection and has strong practicability.

In order to achieve the above object, the technical solution of the utility model is achieved in that:

A battery liquid injection device, comprising:

The liquid injection cup includes a cup body with a cavity containing the electrolyte formed inside, and a cover body arranged on the cup body. A communication channel, and a second communication channel capable of communicating the cavity with an external electrolyte replenishment device;

The liquid injection nozzle is arranged under the cup body, a communication pipe is detachably provided between the liquid injection nozzle and the cup body, and the liquid injection nozzle is connected to the cavity through the communication pipe.

Further, a mounting seat is provided under the cup body, and the liquid injection nozzle and the communicating pipe are connected through the mounting seat, and the mounting seat is provided with a the third connecting channel.

Further, the mounting seat is connected to the cup body through a connecting rod, and the connecting rod is detachably connected to the cup body.

Further, the connecting pipe and the installation seat, and/or, the cup body and the communicating pipe are connected through a push-in joint.

Further, the installation seat is snap-connected with the liquid injection nozzle.

Further, the mounting seat is provided with a cylindrical plug joint, and the plug joint is provided with a locking protrusion arranged axially on the ring itself, and the liquid injection nozzle is provided with a A matching socket, the plug joint can be inserted into the socket, so that the installation seat is connected with the liquid injection nozzle.

Further, the communication pipe is provided with a shut-off valve for opening and closing the communication pipe.

Further, the liquid injection nozzle includes a cylindrical section connected to the communication pipe, and a conical section connected to the cylindrical section, and the outer diameter of the cylindrical section is larger than the inner diameter of the battery liquid injection port, the The outer diameter of the bottom of the tapered section is smaller than the inner diameter of the battery liquid injection port.

Further, the bottom of the cup is provided with a liquid outlet that communicates with the cavity and the communication pipe, and along the direction from the cavity to the liquid outlet, the inner diameter of the cavity is gradually reduced. .

Further, a sealing ring is provided between the cup body and the cover body.

Compared with the prior art, the utility model has the following advantages:

The battery liquid injection device described in the utility model integrates the first communication channel used to communicate with external vacuum equipment and the second communication channel used to communicate with external electrolyte replenishment equipment on the cover body, which can improve the injection capacity. The integrated level of the liquid cup reduces the parts of the liquid injection cup, reduces the production cost, and makes the overall sealing of the liquid injection cup better, improving the stability of liquid injection, and the connecting pipe is detachable, which is convenient for the disassembly of the liquid injection nozzle and the connecting pipe. It is beneficial to the repair and maintenance of the battery liquid injection device, and can have a better use effect.

In addition, the setting of the mounting seat can improve the installation stability of the liquid injection nozzle, and the detachable setting of the connecting rod facilitates the disassembly and assembly of the mounting seat, as well as subsequent replacement and maintenance. The quick-plug joint is used to facilitate the detachable connection of the connecting pipe, which is convenient for the replacement of the connecting pipe, and the use of the quick-plug joint can save the sealing ring between the connecting pipe and the mounting seat and between the cup body and the connecting pipe , improve the corrosion resistance of the device, thereby improving the stability of liquid injection and the service life of the device.

At the same time, the installation seat is clipped and connected with the liquid injection nozzle, which can realize the convenient replacement of the liquid injection nozzle, and the matching arrangement of the plug connector and the socket slot can make the structure simple and the clip connection stability good. Setting the cut-off valve is beneficial to control the vacuum degree between the cup and the battery and the on-off of electrolyte delivery during the liquid injection process, so that there is no movement of mechanical structural parts inside the cup body during the liquid injection process, and the stability of the liquid injection is improved.

In addition, with the setting of the tapered section, during the liquid injection operation, the tapered section of the liquid injection nozzle can abut against the inner diameter of the battery liquid injection port and seal the battery liquid injection port, thereby improving the liquid injection stability. Along the direction from the cavity to the liquid outlet, the inner diameter of the cavity is gradually reduced, which can facilitate the downward flow of the electrolyte and avoid residual electrolyte in the cup. The setting of the sealing ring is beneficial to improve the sealing between the cup body and the cover body.

Description of drawings

The accompanying drawings constituting a part of the utility model are used to provide a further understanding of the utility model, and the schematic embodiments of the utility model and their descriptions are used to explain the utility model, and do not constitute improper limitations to the utility model. In the attached picture:

Fig. 1 is a schematic diagram of the overall structure of the battery liquid injection device described in the embodiment of the present invention;

2 is a schematic diagram of the internal structure of the cup described in the embodiment of the present invention;

3 is a schematic diagram of the internal structure of the liquid injection nozzle described in the embodiment of the present invention;

Explanation of reference signs:

1. Cup body; 2. Cover body; 3. Injection nozzle; 4. Connecting pipe; 5. Mounting seat; 6. Connecting rod; 7. Globe valve; seat;

100, cavity; 101, mounting flange; 102, liquid outlet; 103, threaded hole;

201, the first connecting pipe; 202, the second connecting pipe;

301, cylindrical section; 302, conical section; 303, insertion slot; 3031, clamping slot.

Detailed ways

It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

In the description of the present utility model, it should be noted that if there are terms such as "up", "down", "inside" and "outside" that indicate orientation or positional relationship, it is based on the orientation or position shown in the drawings. The relationship is only for the convenience of describing the utility model and simplifying the description, but does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the utility model. In addition, if terms such as "first" and "second" appear, they are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

In addition, in the description of the present utility model, unless otherwise clearly defined, the terms "installation", "connection", "connection" and "connector" should be interpreted broadly. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediary; connected. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention in combination with specific situations.

The utility model will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.

Embodiment one

This embodiment relates to a battery liquid injection device, which has a high degree of integration, which can make the overall sealing of the device better, which is conducive to improving the stability of liquid injection, and at the same time, it is also beneficial to the maintenance and maintenance of the battery liquid injection device, and can It has good application effect.

In terms of overall structure, as shown in FIGS. 1 to 3 , the battery liquid injection device of this embodiment includes a liquid injection cup and a liquid injection nozzle 3 . Among them, the liquid injection cup includes a cup body 1 with a cavity 100 for containing the electrolyte formed inside, and a cover body 2 arranged on the cup body 1. The cover body 2 is provided with a hole that can communicate with the cavity body 100 and external vacuum equipment. A first communication channel, and a second communication channel capable of communicating the cavity 100 with an external electrolyte replenishment device.

The liquid injection nozzle 3 is disposed under the cup body 1 , and a communication pipe 4 is detachably provided between the liquid injection nozzle 3 and the cup body 1 , and the liquid injection nozzle 3 is connected to the cavity 100 through the communication pipe 4 .

It is worth mentioning that the top and bottom of this embodiment refer to the top and bottom of the liquid injection cup. At the same time, the external vacuum equipment of this embodiment can adopt conventional vacuum equipment, such as a vacuum pump, external The electrolyte replenishment equipment may also use common electrolyte injection equipment, such as an electrolyte injection machine.

Meanwhile, during specific implementation, the external vacuum equipment communicates with the first communication channel through the first connection pipe 201 , and the external electrolyte replenishment device communicates with the second communication channel through the second connection pipe 202 . The specific structural structure of the battery mentioned in this embodiment can refer to the common battery cell products in the prior art. The battery injection hole on the board.

Based on the above overall introduction, as a preferred implementation form, as shown in Figure 1, in this embodiment, a mounting seat 5 is provided below the cup body 1, and the liquid injection nozzle 3 and the communication pipe 4 are connected through the mounting seat 5. Moreover, a third communication passage connecting the liquid injection nozzle 3 and the communication pipe 4 is provided on the mounting base 5 . Such setting can improve the installation stability of the liquid injection nozzle 3 .

In the specific setting, the preferred implementation form, in this embodiment, the mounting seat 5 is connected to the cup body 1 through a connecting rod 6, and the connecting rod 6 and the cup body 1 are detachably connected to facilitate the disassembly and assembly of the mounting seat 5. And later replacement and repair. Moreover, the number of connecting rods 6 can be set and adjusted according to the actual installation requirements of the mounting base 5 and the structural layout requirements of the battery liquid injection device of this embodiment. For example, four connecting rods 6 can be specifically set, Four connecting rods 6 are distributed in a rectangle.

At the same time, in this embodiment, the detachable connection form between the connecting rod 6 and the cup body 1 can adopt a commonly used screw connection form. Specifically, as shown in FIG. 1 and FIG. There is a mounting flange 101 with a threaded hole 103 , and an external thread is provided on the connecting rod 6 so that the connecting rod 6 can be directly screwed into the threaded hole 103 .

In this embodiment, in the preferred form of implementation, the connection between the connecting pipe 4 and the mounting seat 5 and between the cup body 1 and the connecting pipe 4 are connected through a quick-plug joint 8, so as to facilitate the detachable connection of the connecting pipe 4 and facilitate the connection of the connecting pipe. 4 replacement, and the use of the push-in joint 8 can save the need to set the sealing ring between the connecting pipe 4 and the mounting seat 5 and between the cup body 1 and the connecting pipe 4, improve the corrosion resistance of the device, and then improve the injection Stability and device life.

In order to realize convenient replacement of the liquid injection nozzle 3 , the installation seat 5 and the liquid injection nozzle 3 are clamped and connected in this embodiment. Specifically, as shown in Fig. 1 and Fig. 3, in a preferred implementation form, a cylindrical plug joint is provided on the mounting seat 5, and a locking protrusion arranged axially on the plug joint is provided on the plug joint. The liquid nozzle 3 is provided with an insertion groove 303 compatible with the plug connector, and the plug connector can be inserted into the insertion groove 303 so that the mounting base 5 is connected with the liquid injection nozzle 3 .

As a result, the structure is simple and at the same time, the clamping stability is good. In the specific setting, there is also a snap-in slot 3031 that is compatible with the locking protrusion in the insertion slot 303, and when assembling, the insertion slot 303 is aligned with the plug connector, and then the liquid injection nozzle 3 is directly inserted into the socket. Set on the plug connector, after the nesting is completed, the clamping protrusion is clamped in the clamping groove 3031, thereby completing the clamping connection between the liquid injection nozzle 3 and the mounting seat 5.

In addition, in this embodiment, as a preferred implementation form, as shown in Figure 1, the communication pipe 4 is provided with a stop valve 7 for switching the communication pipe 4, which is beneficial to control the connection between the cup body 1 and the battery during the liquid injection process. The medium vacuum degree and the on-off of the electrolyte delivery make it possible for there to be no movement of mechanical structural parts inside the cup body 1 during the liquid injection process, which improves the stability of the liquid injection.

In the specific setting, the above-mentioned cut-off valve 7 can adopt a common pneumatic pipeline cut-off valve 7 to obtain the advantages of simple structure, short opening and closing time, and good on-off performance.

In this embodiment, the preferred form of implementation is still as shown in Figure 3, the liquid injection nozzle 3 includes a cylindrical section 301 connected to the communication pipe 4, and a conical section 302 connected to the cylindrical section 301, and the outer diameter of the cylindrical section 301 The size is larger than the inner diameter of the liquid injection port of the battery, and the outer diameter of the bottom of the tapered section 302 is smaller than the inner diameter of the liquid injection port of the battery, so that the tapered section 302 of the liquid injection nozzle 3 can abut against the battery during the liquid injection operation. On the inner diameter of the liquid injection port, and seal the battery liquid injection port, thereby improving the stability of liquid injection.

And it should be noted that, in practice, the socket slot 303 of this embodiment is set on the cylindrical section 301, and the cylindrical section 301 is connected to the plug joint, that is, the connecting pipe 4 and the cylindrical section 301 are connected through the mounting seat 5. In order to facilitate the nesting of the plug connector into the cylindrical section 301 so as to clamp the cylindrical section 301 on the plug connector, the liquid injection nozzle 3 can be made of rubber material.

In addition, in this embodiment, as shown in FIG. 2 , in a preferred implementation form, the bottom of the cup body 1 is provided with a liquid outlet 102 communicating with the cavity 100 and the communication pipe 4 , and along the cavity 100 to the liquid outlet 102 direction, the inner diameter of the cavity 100 is gradually reduced to facilitate the downward flow of the electrolyte and avoid residual electrolyte in the cup body 1 .

At the same time, in this embodiment, a sealing ring is preferably provided between the cup body 1 and the cover body 2, so as to improve the sealing performance between them. Moreover, it should be mentioned that, in order to facilitate the use of the battery liquid injection device, a lifting device for driving the battery liquid injection device to rise and fall can also be provided in this embodiment. Specifically, the lifting device includes a base 10, which is arranged on The driving cylinder on the base 10, and the sliding plate 9 slidably arranged on the base 10, and the sliding direction of the sliding plate 9 is the height direction, and the liquid injection cup in the battery liquid injection device is directly arranged on the sliding plate 9.

During the liquid injection process of the battery liquid injection device of this embodiment, the liquid injection nozzle 3 abuts against the battery liquid injection hole. Vacuum operation, after the vacuum degree reaches the predetermined requirement, close the shut-off valve 7 and stop the vacuuming operation, then pour a preset amount of electrolyte into the cup body 1 through the second communication channel, then open the shut-off valve 7 again, pass through the first The two communication channels perform the pressure relief operation on the cup body 1, and form a pressure difference between the cup body 1 and the inside of the battery, so as to facilitate the electrolyte to be pumped into the battery, thereby completing the liquid injection process.

The battery liquid injection device of this embodiment integrates the first communication channel used to communicate with external vacuum equipment and the second communication channel used to communicate with external electrolyte replenishment equipment on the cover body 2, which can enhance the liquid injection. The integration of the cup reduces the parts of the liquid injection cup, reduces the production cost, and makes the overall sealing of the liquid injection cup better, improving the stability of liquid injection, and the connecting pipe 4 is detachable, which is convenient for the liquid injection nozzle 3 and the connecting pipe 4 Easy disassembly and assembly is beneficial to the repair and maintenance of the battery liquid injection device, and can have a better use effect.

The above descriptions are only preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present utility model shall be included in the Within the protection scope of the present utility model.

Claims (10)

1. A battery liquid injection device, characterized in that, comprising: The liquid injection cup includes a cup (1) with a cavity (100) for containing the electrolyte formed inside, and a cover (2) arranged on the cup (1), on which the cover (2) There is a first communication channel capable of communicating the cavity (100) with external vacuum pumping equipment, and a second communication channel capable of communicating the cavity (100) with external electrolyte replenishment equipment; The liquid injection nozzle (3) is arranged under the cup body (1), and a communication pipe (4) is detachably provided between the liquid injection nozzle (3) and the cup body (1), and the The liquid injection nozzle (3) is connected with the cavity (100) through a communication pipe (4). 2. The battery liquid injection device according to claim 1, characterized in that: A mounting seat (5) is provided under the cup body (1), the liquid injection nozzle (3) is connected to the communication pipe (4) through the mounting seat (5), and the mounting seat (5 ) is provided with a third communication passage connecting the liquid injection nozzle (3) and the communication pipe (4). 3. The battery liquid injection device according to claim 2, characterized in that: The mounting base (5) is connected to the cup body (1) through a connecting rod (6), and the connecting rod (6) is detachably connected to the cup body (1). 4. The battery liquid injection device according to claim 2, characterized in that: The connecting pipe (4) and the mounting seat (5), and/or, the cup body (1) and the communicating pipe (4) are connected through a push-in joint (8). 5. The battery liquid injection device according to claim 2, characterized in that: The installation seat (5) is clamped and connected with the liquid injection nozzle (3). 6. The battery liquid injection device according to claim 5, characterized in that: The mounting seat (5) is provided with a cylindrical plug joint, and the plug joint is provided with a clamping protrusion arranged axially around itself, and the liquid injection nozzle (3) is provided with a A socket (303) that is suitable for the plug connector, and the plug connector can be inserted into the socket (303), so that the mounting seat (5) is connected to the liquid injection nozzle (3). 7. The battery liquid injection device according to claim 1, characterized in that: The communication pipe (4) is provided with a cut-off valve (7) for opening and closing the communication pipe (4). 8. The battery liquid injection device according to claim 1, characterized in that: The liquid injection nozzle (3) includes a cylindrical section (301) connected to the communication pipe (4), and a conical section (302) connected to the cylindrical section (301), and the cylindrical section (301) The outer diameter of the tapered section (302) is larger than the inner diameter of the battery liquid injection port, and the outer diameter of the bottom of the tapered section (302) is smaller than the inner diameter of the battery liquid injection port. 9. The battery liquid injection device according to claim 1, characterized in that: The bottom of the cup body (1) is provided with a liquid outlet (102) connecting the cavity (100) and the communication pipe (4), and along the cavity (100) to the liquid outlet In the direction of (102), the inner diameter of the cavity (100) is gradually reduced. 10. The battery liquid injection device according to any one of claims 1 to 9, characterized in that: A sealing ring is provided between the cup body (1) and the cover body (2).

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