Soft seal head

Abstract

The utility model belongs to the technical field of soft package battery production, and discloses a soft seal head which comprises a top seal assembly and an auxiliary heating assembly, the top seal assembly comprises an upper seal head and a lower seal head which are oppositely arranged, and the upper seal head and the lower seal head can be close to each other or far away from each other. The auxiliary heating assembly comprises a heating block and a heating boss, the heating block is arranged on the side, facing the lower end socket, of the upper end socket, a plurality of elastic pieces are connected between the heating block and the upper end socket, the heating boss is arranged on the side, facing the upper end socket, of the lower end socket, and a tab to be subjected to top sealing can stretch into the position between the heating block and the heating boss. When the driving source drives the upper sealing head and the lower sealing head to get close to each other, the heating block firstly makes contact with the tabs abutting against the heating boss, the heating block can tightly press and position the tabs under the elastic force action of the elastic piece, and meanwhile, the heating block and the heating boss can heat the two tabs at the same time so as to ensure the consistency of the top sealing thicknesses of the two tabs.

Description

TECHNICAL FIELD

[0001] The utility model relates to soft -packaged battery production technical field especially relates to a soft seal head. BACKGROUND

[0002] The packaging material of lithium battery includes aluminum shell, steel shell and aluminum plastic film, wherein the lithium battery packaged by aluminum plastic film is called soft -packaged battery, and the packaging operation of soft -packaged battery in production includes top seal, side seal, one seal and two seals, one seal and two seals are the packaging operation after the injection of electrolyte of soft -packaged battery, and side seal and top seal are all the packaging operation before the injection of electrolyte of soft -packaged battery, wherein top seal is the packaging operation to the tab side of soft -packaged battery.

[0003] In the prior art, the soft seal packaging of the tab side directly uses silica gel aluminum plate, but because the stress of silica gel is not balanced, the silica gel strip and silica gel plate are easy to be damaged, and the cost of silica gel aluminum plate is also higher, in addition, due to the unbalanced stress, the top seal thickness consistency of the positive and negative tabs of soft -packaged battery is poor, and leakage is prone to occur due to poor sealing, which affects the normal use of soft -packaged battery. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing a kind of soft seal head, can ensure the top seal thickness consistency of the positive and negative tabs of soft -packaged battery.

[0005] To achieve this purpose, the utility model uses the following technical solutions:

[0006] Provide a kind of soft seal head, comprising:

[0007] Top seal assembly, including oppositely arranged upper head and lower head, the upper head and the lower head can be close to each other or away from each other;

[0008] Auxiliary heating assembly, including heating block and heating boss, the heating block is set to the side of the upper head facing the lower head, and a plurality of elastic members are connected between the heating block and the upper head;The heating boss is set to the side of the lower head facing the upper head;The tab to be top sealed can be inserted between the heating block and the heating boss.

[0009] As optional scheme of soft seal head, the lower head is provided with silica gel strip, and the tab is abutted on the silica gel strip.

[0010] As optional scheme of soft seal head, a plurality of fastening holes are formed in the lower head, a plurality of through holes are formed in the silica gel strip, a plurality of the fastening holes and a plurality of the through holes are one-to-one corresponding, a fastener is provided in each through hole, and each fastener is screwed in the corresponding fastening hole.

[0011] As an optional solution of the soft seal head, a plurality of guide columns are further arranged on the upper head, each of the guide columns is arranged through the heating block, a plurality of elastic members are correspondingly sleeved on the plurality of guide columns, and each of the elastic members is abutted on one side of the upper head and the other side of the heating block.

[0012] As an optional solution of the soft seal head, each of the guide columns is detachably arranged on the upper head.

[0013] As an optional solution of the soft seal head, the length of the heating block is greater than the length of the heating boss.

[0014] As an optional solution of the soft seal head, the soft seal head further comprises a glue blocking block arranged between the upper head and the lower head, two limiting grooves are arranged on the glue blocking block, and the limiting grooves are used for allowing the tab to pass through.

[0015] As an optional solution of the soft seal head, the heating boss is integrally formed with the lower head.

[0016] As an optional solution of the soft seal head, a heating hole is arranged on the lower head, and the heating hole is configured to arrange an external heat source, and the external heat source can heat the lower head and the heating boss.

[0017] As an optional solution of the soft seal head, a plurality of waist-shaped mounting holes are arranged on the upper head and the lower head, respectively.

[0018] The soft seal head has the following beneficial effects:

[0019] The utility model provides a kind of soft seal head, including top seal subassembly and auxiliary heating subassembly.Top seal subassembly includes the upper head and lower head of relative arrangement, and the upper head and lower head are installed on the device by cylinder or motor etc. BRIEF DESCRIPTION OF DRAWINGS

[0020] Fig. 1 is the overall structure schematic view of the soft seal head provided by the embodiment of the specific implementation manner of the utility model;

[0021] Fig. 2 is the explosion view of the soft seal head provided by the embodiment of the specific implementation manner of the utility model;

[0022] Fig. 3 is the structure schematic view of the upper head provided by the embodiment of the specific implementation manner of the utility model.

[0023] In the figure:

[0024] 100, the pole ear; 200, the battery;

[0025] 1, the top seal assembly;

[0026] 11, the upper head; 111, the waist type mounting hole; 12, the lower head; 121, the silica gel strip; 122, the heating hole;

[0027] 2, the auxiliary heating assembly; 21, the heating block; 22, the heating boss;

[0028] 3, the glue blocking block; 31, the limiting groove. Specific implementation manner

[0029] The utility model will be further described in detail below in combination with the drawings and the embodiment. It can be understood that the specific embodiment described here is only used for explaining the utility model, and is not limited to the utility model. In addition, it should be noted that, in order to facilitate the description, only the part related to the utility model is shown in the drawings, not all structures.

[0030] In the description of the utility model, unless otherwise explicitly specified and limited, the terms "connected", "connected", "fixed" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integral; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate medium, it can be the communication or interaction of two elements inside two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0031] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0032] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0033] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0034] like Figs. 1 to 3 As shown, this embodiment provides a soft-sealing head, which includes a top sealing assembly 1 and an auxiliary heating assembly 2. The top sealing assembly 1 includes an upper sealing head 11 and a lower sealing head 12 disposed opposite to each other. Both the upper sealing head 11 and the lower sealing head 12 are mounted on a device driven by a driving source such as a cylinder or a motor. Under the drive of the driving source, the upper sealing head 11 and the lower sealing head 12 can move closer to each other or further away from each other. When the tab 100 of the battery 200 and the aluminum-plastic film on the tab 100 side are placed between the upper sealing head 11 and the lower sealing head 12, the upper sealing head 11 and the lower sealing head 12 move closer to each other and abut against the aluminum-plastic film on the tab 100 side of the battery 200, so that the battery 200 forms a top sealing edge on the tab 100 side. The auxiliary heating assembly 2 includes a heating block 21 and a heating boss 22. The heating block 21 is disposed on the side of the upper end cap 11 facing the lower end cap 12, and multiple elastic elements are connected between the heating block 21 and the upper end cap 11. The heating boss 22 is disposed on the side of the lower end cap 12 facing the upper end cap 11. The tab 100 to be sealed can extend between the heating block 21 and the heating boss 22. When the driving source drives the upper end cap 11 and the lower end cap 12 to move closer to each other, the heating block 21 first contacts the tab 100 abutting against the heating boss 22. Under the elastic force of the elastic elements, the heating block 21 can press and position the tab 100. At the same time, the heating block 21 and the heating boss 22 can heat the two tabs 100 simultaneously to ensure the consistency of the sealing thickness of the two tabs 100.

[0035] Specifically, in the embodiment, two elastic members are arranged, and the elastic members are springs, which are easy to deform and have large elasticity; in other embodiments, the number of elastic members can be arranged as required.

[0036] Exemplarily, the upper head 11 and the lower head 12 are both made of copper material, which has high strength, high thermal conductivity and good corrosion resistance.

[0037] Optionally, the lower head 12 is provided with a silica gel strip 121, and the tab 100 abuts against the silica gel strip 121. The silica gel strip 121 is used as a common packaging material due to its good flexibility and sealing property, so that the packaging process is more simple and convenient. However, since the heat conduction capacity of the silica gel strip 121 is lower than that of the metal material, the temperature compensation is implemented on the lower head 12 provided with the silica gel strip 121, and the temperature of the lower head 12 is generally 10-15℃ higher than that of the upper head 11.

[0038] Specifically, the lower head 12 is provided with a groove for embedding the silica gel strip 121, so as to facilitate the installation of the silica gel strip 121.

[0039] Further, the lower head 12 is provided with a plurality of fastening holes, and the silica gel strip 121 is provided with a plurality of through holes, the plurality of fastening holes and the plurality of through holes correspond to each other one by one, one fastener is arranged in each through hole, and each fastener is screwed in the corresponding fastening hole, so as to detachably install the silica gel strip 121 on the lower head 12, thereby facilitating the installation and dismounting of the silica gel strip 121.

[0040] Specifically, in the embodiment, the bottom wall of the groove on the lower head 12 is provided with a plurality of fastening holes. Exemplarily, the fastening holes are common thread holes in the field, and the fasteners are common bolts or screws in the field, which are convenient to obtain and have good economy.

[0041] Optionally, the length of the heating block 21 is greater than the length of the heating boss 22. Specifically, in the actual packaging process, the upper head 11 and the lower head 12 are respectively driven by different driving sources, the tab 100 abuts against the heating boss 22 of the lower head 12, and the length of the heating block 21 is greater than the length of the heating boss 22, so that even if the position of the upper head 11 deviates and does not face the lower head 12, the heating block 21 can still abut against the heating boss 22, and the auxiliary heating of the tab 100 can be ensured to be smoothly performed.

[0042] Optionally, the soft sealing head further comprises a glue blocking block 3, which is arranged between the upper head 11 and the lower head 12, and two limiting grooves 31 are formed in the glue blocking block 3, the limiting grooves 31 are used for allowing the tabs 100 to pass through, and the tabs 100 passing through the limiting grooves 31 can abut against the heating boss 22 of the lower head 12. The glue blocking block 3 is also connected to an external driving source, and under the driving of the external driving source, the glue blocking block 3 can be located between the upper head 11 and the lower head 12.

[0043] It should be noted that the battery 200 has positive and negative tabs 100, and therefore two limiting grooves 31 are arranged to allow the positive and negative tabs 100 to pass through, respectively. The technician can intuitively confirm whether the tabs 100 are accurately placed, thereby ensuring the accuracy of the tab 100 packaging. Alternatively, in other embodiments, only one limiting groove 31 can be provided, and the positive and negative tabs 100 can pass through the limiting groove 31.

[0044] Optionally, a plurality of guide columns are further arranged on the upper head 11, each guide column passes through the heating block 21, a plurality of elastic members are correspondingly sleeved on the plurality of guide columns, and each elastic member abuts against one end of the upper head 11 and the other end of the heating block 21. The arrangement of the guide columns can guide the expansion and contraction of the elastic members, ensuring the stability and accuracy of the elastic members during deformation.

[0045] Further, each guide column is detachably arranged on the upper head 11, so as to facilitate the installation and disassembly of the guide column. Specifically, the guide column is connected to the outer wall of one end of the upper head 11 and a thread is arranged around the outer wall, a corresponding threaded hole is formed in the upper head 11, and the guide column is screwed into the threaded hole of the upper head 11, which is simple and convenient to operate.

[0046] Optionally, the heating boss 22 and the lower head 12 are integrally formed, which is convenient for processing and can save production time and cost.

[0047] Optionally, a heating hole 122 is formed in the lower head 12, the heating hole 122 is configured to arrange an external heat source, and the external heat source can heat the lower head 12 and the heating boss 22 to heat and package the tabs 100. In this embodiment, the upper head 11 directly contacts the external heat source to heat the upper head 11. Specifically, the external heat source is a device disclosed in the prior art, and the specific structure and principle thereof are referred to the prior art, which will not be described here.

[0048] Optionally, a plurality of waist-shaped mounting holes 111 are formed in the upper head 11 and the lower head 12, respectively. The arrangement of the waist-shaped mounting holes 111 allows the upper head 11 and the lower head 12 to be detachably arranged on an external structure, and the relative positions thereof after being fixed can be adjusted, which is convenient for debugging and has high flexibility.

[0049] Obviously, the above embodiments of the present application are merely examples for clearly illustrating the present application, and are not intended to limit the implementation modes of the present application. For those skilled in the art, various obvious changes, re-adjustments and replacements can be made without departing from the protection scope of the present application. Here, it is not necessary and also impossible to enumerate all the implementation modes. Any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application claim.

Claims

1. A soft seal closure, characterized in that The application relates to a top sealing assembly (1) and an auxiliary heating assembly (2) thereof. The auxiliary heating assembly (2) comprises a heating block (21) and a heating boss (22), the heating block (21) is arranged on one side of the upper head (11) facing the lower head (12), and a plurality of elastic members are connected between the heating block (21) and the upper head (11); the heating boss (22) is arranged on one side of the lower head (12) facing the upper head (11); and the tab (100) to be top sealed can be inserted between the heating block (21) and the heating boss (22). A silica gel strip (121) is arranged on the lower head (12), and the tab (100) abuts against the silica gel strip (121).

2. The soft seal closure of claim 1, wherein, A plurality of fastening holes are formed in the lower head (12), a plurality of through holes are formed in the silica gel strip (121), the plurality of fastening holes and the plurality of through holes are in one-to-one correspondence, one fastener is arranged in each through hole, and each fastener is screwed in the corresponding fastening hole.

3. The soft seal closure of claim 2, wherein, A plurality of guide columns are arranged on the upper head (11), each guide column is arranged on the heating block (21), the plurality of elastic members are correspondingly sleeved on the plurality of guide columns, and each elastic member abuts against the upper head (11) at one end and abuts against the heating block (21) at the other end.

4. The flexible seal closure of claim 1, wherein, Each guide column is detachably arranged on the upper head (11).

5. The soft seal closure of claim 4, wherein, The length of the heating block (21) is greater than the length of the heating boss (22).

6. The flexible seal closure of claim 1, wherein, The soft sealing head further comprises a glue blocking block (3) arranged between the upper head (11) and the lower head (12), two limiting grooves (31) are formed in the glue blocking block (3), and the limiting grooves (31) are used for allowing the tab (100) to pass through.

7. The flexible seal closure of claim 1, wherein, The heating boss (22) and the lower head (12) are integrally formed.

8. The flexible seal closure of claim 1, wherein, A heating hole (122) is formed in the lower head (12), the heating hole (122) is configured to arrange an external heat source, and the external heat source can heat the lower head (12) and the heating boss (22).

9. The flexible can end of claim 1 wherein, A plurality of waist-shaped mounting holes (111) are formed in the upper head (11) and the lower head (12) respectively.

10. The flexible can end of claim 1 wherein, ​

Images