CN115673543A - Battery shaping tool and battery sealing method - Google Patents

Abstract

The application discloses a battery shaping tool and a battery sealing method. The battery shaping tool comprises a cylinder; the front push plate is fixedly connected with a power output shaft of the cylinder; the plastic pedestal has and is being restrained the board by the back, and the rigid coupling is in two sides on the board is restrained and the chamber that holds that the board encloses is restrained to the back, it is used for placing the battery of treating the plastic to hold the intracavity. When implementing the plastic to the lithium cell, place the battery earlier and restrict the chamber that holds that the board encloses by back restraint board and rigid coupling two sides on the board is restricted to the back, restart the cylinder, push pedal contact and extrusion are on a surface of battery before the power output shaft of cylinder drives, hold the chamber wall and can retrain other surface portions of battery simultaneously to the plastic of battery has been accomplished, has improved the plastic effect.

Description

Battery shaping tool and battery sealing method

Technical Field

The application relates to the technical field of battery packaging, in particular to a battery shaping tool and a battery sealing method.

Background

Lithium batteries, such as lithium titanate batteries, produce more gas during the formation process, and are prone to generate the phenomenon of gas expansion and deformation due to different stress areas of all surfaces of square-shell batteries.

In the related art, the shaping clamp is low in efficiency, and the shaping effect cannot achieve a good effect.

Disclosure of Invention

In view of the above, the present application provides a battery shaping tool and a method for sealing a battery, which can improve the shaping effect of the battery.

In a first aspect, the present application provides a battery shaping tool, comprising:

a cylinder;

the front push plate is fixedly connected with a power output shaft of the air cylinder;

the shaping seat body is provided with a containing cavity which is formed by a rear restraint plate and two side restraint plates fixedly connected to the rear restraint plate, and the containing cavity is used for placing a battery to be shaped.

Optionally, the number of the side restraint plates is more than two, so that the accommodating cavity is divided into a plurality of cavities.

Optionally, the side restraint plate is rotatably connected to the rear restraint plate.

Optionally, a surface of the front pushing plate, which is used for contacting the battery, is provided with a flexible cushion layer.

Optionally, still include the support frame that is used for supporting plastic pedestal, but back restraint board sharp setting is in the support frame with sliding.

In a second aspect, the present application provides a method for sealing a battery, comprising the steps of:

mounting a battery on a battery reforming tool as defined in claim 1;

and placing the battery shaping tool and the battery in a vacuum environment, and sealing.

Optionally, the sealing process is performed by laser welding.

When the lithium battery is shaped, the battery is placed in the accommodating cavity formed by the rear restraint plate and the two side restraint plates fixedly connected to the rear restraint plate, the cylinder is started again, the power output shaft of the cylinder drives the front push plate to contact and extrude the front push plate to one surface of the battery, and the accommodating cavity wall can simultaneously restrain other surface parts of the battery, so that the shaping of the battery is completed, and the shaping effect is improved.

Drawings

The technical solutions and other advantages of the present application will become apparent from the following detailed description of specific embodiments of the present application when taken in conjunction with the accompanying drawings.

Fig. 1 is a schematic view illustrating an operating state of an orthotic device according to an embodiment of the present disclosure.

Fig. 2 is a schematic structural diagram of an orthotic device according to an embodiment of the present application.

Fig. 3 is a schematic view illustrating another working state of the orthotic device according to the embodiment of the present application.

Wherein the elements in the figures are identified as follows:

1-a battery; 2-a vacuum cavity; 3, shaping the tool; 3-1-cylinder; 3-2-power output shaft, 3-3-front push plate; 3-4, 3-6-side restraint plate; 3-5-rear restraint plate; 4-a laser probe; 5-welding the cylinder; 6-vacuum air inlet hole; 7-atmospheric air intake; 8-battery liquid injection hole; 9-vacuum chamber door.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

In the description of the present application, it is to be understood that the terms "first", "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

In the description of the present application, it should be noted that, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, a fixed connection, a detachable connection, or an integral connection; may be mechanically, electrically or may be in communication with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as the case may be.

The following disclosure provides many different embodiments or examples for implementing different features of the application. In order to simplify the disclosure of the present application, specific example components and arrangements are described below. Of course, they are merely examples and are not intended to limit the present application. Moreover, the present application may repeat reference numerals and/or letters in the various examples, such repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, examples of various specific processes and materials are provided herein, but one of ordinary skill in the art may recognize the application of other processes and/or the use of other materials.

Referring to fig. 2 and fig. 3, the present application provides a shaping tool for a battery 1, including:

a cylinder 3-1;

a front push plate 3-3 fixedly connected with a power output shaft 3-2 of the cylinder 3-1;

a shaping seat body, which is provided with a containing cavity enclosed by a rear restraint plate 3-5 and two side restraint plates 3-4 and 3-6 fixedly connected on the rear restraint plate 3-5, wherein the containing cavity is used for placing a battery 1 to be shaped.

As an exemplary implementation manner of the number of the side restraining plates 3-4,3-6, the number of the side restraining plates 3-4,3-6 is more than two, for example, three as shown in fig. 2 and 3, so that the accommodating cavity is divided into a plurality of cavities.

Therefore, the shaping of the plurality of batteries 1 can be simultaneously realized through the plurality of cavities, and the shaping processing efficiency is improved.

As an exemplary manner of securing the side restraint plates 3-4,3-6 to the rear restraint plate 3-5, the side restraint plates 3-4,3-6 are pivotally connected to the rear restraint plate 3-5.

Thus, by the rotatable connection, the attitude of the side restraint plates 3-4,3-6 relative to the rear restraint plate 3-5 is adjusted, thereby achieving adjustment of the size of the opening of the receiving cavity for accessing the battery 1.

It is easy for those skilled in the art to realize the rotatable connection, which may be hinged, etc.

In an exemplary embodiment, a surface of the front push plate 3-3 for contacting the battery 1 is provided with a flexible cushion layer (not shown).

Thus, the design considerations for the compliant pad are: when the front pushing plate 3-3 presses one surface of the battery 1, if the rigidity of the front pushing plate 3-3 is too high, mechanical damage to the surface of the battery 1, such as local pressing deformation, may occur. The compliant cushion layer can prevent the occurrence of such local compressive deformation and protect the outer surface of the battery 1.

Because the front push plate 3-3 is fixedly connected to the power output shaft 3-2 of the cylinder 3-1, the power output shaft 3-2 plays a certain supporting role for the front push plate 3-3. However, if the output amplitude of the power output shaft 3-2 is too large, or the power output rate of the power output shaft 3-2 is too fast, or the surface of the battery 1 is not flat (for example, the battery 1 is a round battery 1), it is difficult to avoid that the pressing finally applied to the surface of the battery 1 is not greatly deviated from the output direction of the power output shaft 3-2, and further the pressing of the battery 1 is locally deformed abnormally.

In order to avoid the abnormal deformation, the shaping base also comprises a support frame for supporting the shaping base, and the rear restraint plate 3-5 is linearly and slidably arranged on the support frame.

Therefore, the support frame is slidably supported by the support frame, so that slight shaking of the front push plate 3-3 relative to the power output shaft 3-2 is effectively eliminated, and the phenomenon that extrusion acting on the surface of the battery 1 is not large in left-right deviation relative to the output direction of the power output shaft 3-2 is finally eliminated.

The form of the support frame may be any frame-like or plate-like member.

In a second aspect, the present application provides a method of sealing a battery 1, comprising the steps of:

mounting the battery 1 on the battery 1 shaping tool according to claim 1;

and (3) placing the shaping tool of the battery 1 together with the battery 1 in a vacuum environment, and sealing.

Here, the sealing process is performed by laser welding.

The operation process of the sealing method for the battery is described in a common application scenario. It should be noted that this common embodiment is not to be taken as an identification basis for understanding the essential features of the technical problem to be solved as claimed in the present application, which is merely exemplary.

Referring to fig. 1, the specific operation process of the battery sealing method includes the following steps:

s1: plugging a sealing nail on the battery 1 and fixing the battery on the shaping tool 3;

s2: sealing the vacuum cavity 2 to ensure that the battery 1 is in a vacuum environment;

s3: opening a vacuum pumping valve to enable vacuum gas to enter from a vacuum gas inlet hole 6;

s4: opening the welding cylinder 5, and pushing the laser probe 4 to approach the battery liquid injection hole 8;

s5: operating the laser welding machine to enable the laser probe 4 to emit light to weld the battery liquid injection hole 8 with the sealing nail;

s6: after welding, the welding cylinder 5 is closed, and the laser probe 4 returns to the initial position;

s7: opening the vacuum breaking valve to enable atmosphere to enter the vacuum cavity from the atmosphere air inlet hole 7;

s8: and after the vacuum breaking is finished, opening the vacuum cavity door 9, and taking the battery out of the vacuum cavity.

The above description is only for the preferred embodiment of the present application, but the scope of the present application is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present application should be covered within the scope of the present application.

Claims (7)

1. The utility model provides a battery plastic frock which characterized in that includes:

a cylinder;

the front push plate is fixedly connected with a power output shaft of the air cylinder;

the shaping seat body is provided with a containing cavity which is formed by a rear restraint plate and two side restraint plates fixedly connected to the rear restraint plate, and the containing cavity is used for placing batteries to be shaped.

2. The battery shaping tool according to claim 1, wherein the number of the side restraining plates is more than two, so that the accommodating cavity is divided into a plurality of cavities.

3. The battery shaping tool of claim 1, wherein the side restraint plate is rotatably coupled to the rear restraint plate.

4. The battery shaping tool according to claim 1, wherein a surface of the front pushing plate, which is used for contacting the battery, is provided with a flexible cushion layer.

5. The battery shaping tool of claim 1, further comprising a support frame for supporting the shaping base, wherein the rear restraint plate is linearly slidably disposed on the support frame.

6. A method for sealing a battery, comprising the steps of:

mounting a battery on a battery reforming tool as defined in claim 1;

and placing the battery shaping tool and the battery in a vacuum environment, and sealing.

7. A method of closing a mouth as claimed in claim 6, wherein the closing is performed by laser welding.

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