End socket and packaging device

Abstract

The utility model relates to the technical field of lithium batteries, in particular to an end socket and a packaging device. The sealing head comprises a base and a sealing cutter, the sealing cutter is arranged on one side of the first end face of the base, a first heat preservation coating is arranged on the other side of the first end face of the base, and a second heat preservation coating and a third heat preservation coating are arranged on the second end face and the third end face of the base respectively. According to the scheme, the end socket comprises a base and a sealing cutter, the sealing cutter is arranged on one side of the first end face of the base, a first heat preservation coating is arranged on the other side of the first end face of the base, and a second heat preservation coating and a third heat preservation coating are arranged on the second end face and the third end face of the base respectively; the outer surfaces of the end socket base are respectively and additionally provided with one heat preservation coating, the contact area between the end socket and the environment can be effectively reduced, the heat preservation effect can be achieved, the heat loss of the end socket is greatly reduced, the temperature stability of the end socket is effectively maintained, and therefore the packaging quality is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to lithium battery technical field especially a sealing head and packaging device. BACKGROUND

[0002] The sealing head is used for vacuum pre-sealing the lithium battery after liquid injection, which needs to be carried out in a dry environment, first, the excess gas in the battery after liquid injection is discharged by vacuumizing, and then the lithium battery is packaged once under the vacuum state, and when packaging, the sealing head needs to seal the aluminum plastic film of the lithium battery under certain temperature, pressure and time; since the current soft package battery is injected in the process, the temperature of the whole glove box is below room temperature, and the vacuumization will take away the heat on the sealing head, resulting in the influence on the packaging quality.

[0003] Therefore, it is very important for the person skilled in the art to design a sealing head and packaging device which can effectively keep warm to improve the packaging quality. INVENTION CONTENTS

[0004] The technical problem to be solved by the embodiment of the utility model lies in providing a sealing head and packaging device which can effectively keep warm to improve the packaging quality, so as to solve the problem that the heat loss is fast during packaging in the prior art, resulting in poor packaging quality.

[0005] The utility model discloses a sealing head, including base and sealing knife, the sealing knife sets up at the first end surface of the base one side, its scheme lies in, the first end surface of the base another side is provided with first heat preservation coating, the second end surface and third end surface of the base are provided with second heat preservation coating and third heat preservation coating respectively.

[0006] Optionally, a glue layer is arranged between the first heat preservation coating and the first end surface of the base, between the second heat preservation coating and the second end surface of the base, and between the third heat preservation coating and the third end surface of the base.

[0007] Optionally, a first Teflon coating is coated on the surface of the side of the first heat preservation coating away from the base.

[0008] Optionally, a first Teflon adhesive tape is pasted on the surface of the side of the first Teflon coating away from the first heat preservation coating.

[0009] Optionally, the sum of the thicknesses of the first heat preservation coating, the glue layer, the first Teflon coating, and the first Teflon adhesive tape is less than the height of the sealing knife protruding from the first end surface of the base.

[0010] Optionally, a second Teflon coating is coated on the surface of the side of the second heat preservation coating away from the base.

[0011] Optionally, a second Teflon tape is pasted on a side surface of the second Teflon coating away from the second heat preservation coating.

[0012] Optionally, a third Teflon coating is coated on a side surface of the third heat preservation coating away from the base.

[0013] Optionally, a third Teflon tape is pasted on a side surface of the third Teflon coating away from the third heat preservation coating.

[0014] To solve the problems in the prior art, the utility model also provides a packaging device, and the scheme is that two said heads are opposite and said knives are correspondingly arranged, and the packaging device further comprises a heating rod and heat insulation stones, the heating rod is connected with the base and is used for heating the head, and the heat insulation stones are connected with the fourth end surface of the base.

[0015] Compared with the prior art, the head provided by the utility model has the beneficial effects that: by designing a head comprising a base and a knife, the knife is arranged on one side of the first end surface of the base, the other side of the first end surface of the base is provided with a first heat preservation coating, the second end surface and the third end surface of the base are respectively provided with a second heat preservation coating and a third heat preservation coating, a heat preservation coating is added on each outer surface of the base of the head, which not only effectively reduces the contact area of the head and the environment, but also plays a heat preservation role, greatly reduces the heat loss of the head, effectively maintains the stability of the temperature of the head, and improves the packaging quality. BRIEF DESCRIPTION OF DRAWINGS

[0016] The technical scheme of the utility model will be further described in detail below with reference to the drawings and embodiments, and the drawings show:

[0017] Figure 1 is a structure diagram of the head provided by the utility model embodiment Figure 1 ;

[0018] Figure 2 is a structure diagram of the head provided by the utility model embodiment Figure 2 ;

[0019] Figure 3 is a structure diagram of the head provided by the utility model embodiment Figure 3 ;

[0020] Figure 4 is a top view of the head provided by the utility model embodiment

[0021] Figure 5 is a structure diagram of the packaging device provided by the utility model embodiment.

[0022] The reference signs in the drawings are:

[0023] 100, base; 200, sealing knife; 300, first heat preservation coating; 400, second heat preservation coating; 500, third heat preservation coating; 600, adhesive layer; 710, first Teflon coating; 720, second Teflon coating; 730, third Teflon coating; 810, first Teflon tape; 820, second Teflon tape; 830, third Teflon tape; 11, upper sealing head; 12, lower sealing head; 20, heating rod; 30, heat insulation stone. DETAILED DESCRIPTION

[0024] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict. Now, the preferred embodiments of the present application will be described in detail with reference to the drawings.

[0025] As Figures 1 to 4 indicated, the present application provides a specific embodiment of a sealing head.

[0026] A sealing head, referring to Figure 1 , the sealing head comprises a base 100 and a sealing knife 200, the sealing knife 200 is arranged on one side of the first end face of the base 100, wherein the other side of the first end face of the base 100 is provided with a first heat preservation coating 300, and the second end face and the third end face of the base 100 are respectively provided with a second heat preservation coating 400 and a third heat preservation coating 500.

[0027] Specifically, the side surface of the sealing knife 200 is flush with one side of the first end face of the base 100, by arranging the side surface of the sealing knife 200 to be flush with one side of the first end face of the base 100, when two sealing knives 200 are arranged in the packaging cavity together, the two sealing knives 200 are more easily aligned, and the position calibration difficulty during installation of the sealing knife 200 can also be effectively reduced; by arranging the first heat preservation coating 300 on the other side of the first end face of the base 100, the heat loss on the first end face of the base 100 can be effectively prevented, by arranging the second heat preservation coating 400 on the second end face of the base 100, the heat loss on the second end face of the base 100 can be effectively prevented, and by arranging the third heat preservation coating 500 on the third end face of the base 100, the heat loss on the third end face of the base 100 can be effectively prevented.

[0028] Since the current soft package battery core needs to control the dew point of the glove box during the liquid injection process, the environment temperature of the whole glove box will be below room temperature, and in addition, vacuumizing is needed before pre-sealing, and the heat of the sealing head will be taken away in the process of vacuumizing, if the temperature of the sealing head is too low, the sealing head material may become hard, the packaging sealing effect is poor, which may cause the electrolyte in the battery to leak, and affect the safety performance of the battery.

[0029] In the embodiment, by designing a head, including a base 100 and a sealing knife 200, the sealing knife 200 is arranged on one side of the first end face of the base 100, wherein the other side of the first end face of the base 100 is provided with a first heat preservation coating 300, and the second end face and the third end face of the base 100 are respectively provided with a second heat preservation coating 400 and a third heat preservation coating 500; by increasing a layer of heat preservation coating on each outer surface of the head base 100, not only the contact area of the head with the environment can be effectively reduced, but also the heat preservation effect can be achieved, the heat loss of the head is greatly reduced, the stability of the head temperature is effectively maintained, and the packaging quality is improved.

[0030] In one of the embodiments, referring to Figure 2 , a glue layer 600 is arranged between the first heat preservation coating 300 and the first end face of the base 100, between the second heat preservation coating 400 and the second end face of the base 100, and between the third heat preservation coating 500 and the third end face of the base 100.

[0031] Specifically, the first heat preservation coating 300 and the first end face of the base 100, the second heat preservation coating 400 and the second end face of the base 100, and the third heat preservation coating 500 and the third end face of the base 100 are bonded by glue and solidified to form the glue layer 600; on the one hand, the manufacturing process can be effectively simplified by bonding with glue, thereby improving the production efficiency and reducing the production cost; on the other hand, the small gap can be filled by bonding with glue to realize a larger contact area, which can not only improve the sealing of the connection and make the heat preservation effect better, but also make the stress of the bonding surface evenly distributed and reduce the local stress concentration to reduce the damage to the material.

[0032] In one of the embodiments, referring to Figure 2 and Figure 3 , a first Teflon coating 710 is coated on the side surface of the first heat preservation coating 300 away from the base 100; a second Teflon coating 720 is coated on the side surface of the second heat preservation coating 400 away from the base 100; a third Teflon coating 730 is coated on the side surface of the third heat preservation coating 500 away from the base 100; the Teflon coating has good chemical corrosion resistance, aging resistance, wear resistance and high temperature resistance, which can effectively protect the first heat preservation coating 300, thereby ensuring the stability and continuity of the heat preservation.

[0033] In one of the embodiments, referring to Figure 2 and Figure 3The first Teflon coating 710 is pasted with a first Teflon tape 810 on the side surface opposite to the first thermal insulation coating 300; the second Teflon coating 720 is pasted with a second Teflon tape 820 on the side surface opposite to the second thermal insulation coating 400; the third Teflon coating 730 is pasted with a third Teflon tape 830 on the side surface opposite to the third thermal insulation coating 500; the Teflon tape has the same chemical corrosion resistance, aging resistance, wear resistance and high temperature resistance as the Teflon coating, so as to ensure the double protection of the first thermal insulation coating 300.

[0034] The sum of the thickness of the adhesive layer 600, the thickness of the first thermal insulation coating 300, the thickness of the first Teflon tape 810 and the thickness of the first Teflon coating 710 is less than the protruding height of the sealing knife 200 based on the first end surface of the base 100.

[0035] In the installation process of the sealing head, slow glue water is uniformly applied on the other side, the second end surface and the third end surface of the first end surface of the base 100, and then a layer of thermal insulation coating is sprayed. After the thermal insulation coating is dried, a layer of Teflon coating is applied on the surface of the thermal insulation coating, and finally a layer of Teflon tape is pasted outside the Teflon coating to obtain a first heat dissipation sealing head.

[0036] In one embodiment, referring to Figure 4 The base 100 is further provided with a plurality of mounting holes 900 for mounting to an external packaging cavity. The mounting holes 900 can be screw holes, and the sealing head is locked in the packaging cavity by screws.

[0037] As shown in Figure 5 The utility model further provides a specific embodiment of a packaging device.

[0038] A packaging device, referring to Figure 5 The packaging device comprises two sealing heads as described above, the two sealing heads are opposite to each other and the sealing knives 200 are correspondingly arranged, and further comprises a heating rod 20 and a heat insulation stone 30. The heating rod 20 is connected to the base 100 for heating the sealing head, and the heat insulation stone 30 is connected to the fourth end surface of the base 100.

[0039] Specifically, the packaging device comprises an upper sealing head 11 and a lower sealing head 12. The upper sealing head 11 and the lower sealing head 12 are arranged in opposite directions of the sealing knives 200, and the positions of the sealing knife 200 of the upper sealing head 11 correspond to those of the sealing knife 200 of the lower sealing head 12, so as to realize press-fit packaging. The packaging device further comprises a heating rod 20 connected to the base 100 for heating the sealing head, and a heat insulation stone 30 connected to the fourth end surface of the base 100 for heat insulation of the sealing head, thereby further improving the heat preservation property of the sealing head.

[0040] It should be understood that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Those skilled in the art can modify the technical solutions described in the above embodiments, or make equivalent substitutions for some of the technical features; and all such modifications and substitutions should fall within the protection scope of the appended claims of this utility model.

Claims

1. A closure head comprising a base and a closure blade disposed on one side of a first end face of the base, characterised in that, The other side of the first end surface of the base is provided with a first heat preservation coating, and the second end surface and the third end surface of the base are respectively provided with a second heat preservation coating and a third heat preservation coating.

2. A head as claimed in claim 1, characterised in that The first heat preservation coating, the second heat preservation coating and the third heat preservation coating are respectively provided with a glue layer between the first heat preservation coating and the first end surface of the base, between the second heat preservation coating and the second end surface of the base, and between the third heat preservation coating and the third end surface of the base.

3. The head defined in claim 1, wherein The first heat preservation coating is coated with a first Teflon coating on the side surface away from the base.

4. A head as claimed in claim 3, characterised in that The first Teflon coating is pasted with a first Teflon adhesive tape on the side surface away from the first heat preservation coating.

5. A head as claimed in claim 4, characterised in that The sum of the thicknesses of the first heat preservation coating, the glue layer, the first Teflon coating and the first Teflon adhesive tape is less than the height of the sealing knife protruding from the first end surface of the base.

6. The head of claim 1, wherein The second heat preservation coating is coated with a second Teflon coating on the side surface away from the base.

7. A head as claimed in claim 6, characterised in that The second Teflon coating is pasted with a second Teflon adhesive tape on the side surface away from the second heat preservation coating.

8. The head of claim 1, wherein The third heat preservation coating is coated with a third Teflon coating on the side surface away from the base.

9. A head as claimed in claim 8, characterised in that The third Teflon coating is pasted with a third Teflon adhesive tape on the side surface away from the third heat preservation coating.

10. A packaging device, characterized by The sealing head comprises two sealing heads as claimed in any one of claims 1-9, the two sealing heads are opposite to each other and the sealing knives are arranged correspondingly, further comprising a heating rod and a heat insulation stone, the heating rod is connected with the base for heating the sealing head, and the heat insulation stone is connected with the fourth end surface of the base.

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