Special-shaped lithium battery side sealing mold

Abstract

The utility model is suitable for the technical field of lithium batteries, and provides a special-shaped lithium battery side sealing mold, a lower side edge groove is defined by an arc edge, a first special-shaped edge and a pressing edge, and an upper side edge groove is defined by the arc edge, a second special-shaped edge and a limiting edge; when the aluminum plastic film on the side edge of the L-shaped plate-type lithium battery is packaged, the right-angle side of the bottom is aligned with the pressing edge, the lower side edge of the second L position is clamped into the lower side edge groove, the upper side edge of the second L position is clamped into the upper side edge groove, and the arc edge is clamped into the circular bead of the second L position; then, enabling the upper sealing head and the lower sealing head to be close to each other so as to complete packaging of the right-angle side edge of the bottom of the L-shaped plate-type lithium battery and the aluminum plastic film at the second L position; the first special-shaped edge, the second special-shaped edge and the third special-shaped edge which are the same as the pressing edge in height and are sequentially connected are arranged on the bottom plate, so that the right-angle side edge of the bottom of the L-shaped plate-type lithium battery and an aluminum-plastic film at the second L position can be conveniently packaged, and the production efficiency is improved.

Description

Technical Field

[0001] The present application belongs to the technical field of lithium batteries, and in particular to a side sealing mold for a special-shaped lithium battery. Background Art

[0002] As an important step in the manufacturing process of soft-pack batteries, packaging requires the top and side sealing of the pole core to form a soft-pack battery without liquid injection. For the current polymer lithium-ion batteries, when packaging soft-pack lithium-ion batteries, the main method is to use the ear glue and the inner layer of polypropylene PP glue in the aluminum-plastic packaging film with a three-layer structure, and use a packaging machine for composite packaging under heating. Specifically, the upper and lower heads of the battery packaging machine are symmetrically spaced in the vertical direction for packaging, and the polymer lithium-ion battery to be packaged is placed between the upper and lower heads.

[0003] For soft-package lithium-ion batteries, three edges generally need to be packaged: a top seal and two side seals. When packaging, the top seal and one of the side seals away from the air bag are generally packaged first, and finally the air bag is cut off and the other side seal is packaged.

[0004] At present, most of the mobile phone lithium batteries in the assembly and production process are regular square lithium-ion batteries. However, as the internal structure of terminal products (such as mobile phones) continues to be updated and iterated, more requirements are put forward for the shape of the battery. For example, in order to avoid other adjacent components such as cameras, more and more U-shaped and L-shaped plate-type lithium batteries have appeared. The change of workpiece structure has brought new challenges to the packaging process.

[0005] like Figure 1 As shown, in the prior art, in order to adapt to the changes in mobile phone design (for example, adding an additional card slot on the mobile phone), the L-shaped plate-type lithium battery needs to add an additional second L position 120 on the basis of the original first L position 110, so as to ensure matching with the design of the mobile phone. Figure 1 As shown, the second L position 120 is opposite to the first L position 110 and is located at the right angle side of the bottom of the L-shaped plate-type lithium battery. For such a change, the existing packaging mold of the L-shaped plate-type lithium battery can no longer meet the packaging requirements. Utility Model Content

[0006] The present application provides a special-shaped lithium battery side sealing mold, which can solve the problem that the existing lithium battery packaging mold cannot package special-shaped lithium batteries with two L positions.

[0007] The present application provides a special-shaped lithium battery side sealing mold, comprising an upper sealing head and a lower sealing head symmetrically arranged up and down, wherein the upper sealing head and the lower sealing head both comprise a bottom plate and a pressing edge arranged on the bottom plate;

[0008] The bottom plate is provided with a first special-shaped edge, a second special-shaped edge and a third special-shaped edge having the same height as the edge pressing and connected in sequence, wherein one end of the first special-shaped edge away from the second special-shaped edge is connected to the edge pressing and is perpendicular to the edge pressing, the second special-shaped edge is parallel to the edge pressing, and one end of the third special-shaped edge away from the second special-shaped edge is connected to the edge pressing;

[0009] The connection between the first special-shaped edge and the second special-shaped edge has a convex arc edge on the side away from the pressing edge, and the connection between the second special-shaped edge and the third special-shaped edge has a convex limiting edge on the side away from the pressing edge.

[0010] Optionally, the connection between the first special-shaped edge and the pressed edge is chamfered.

[0011] Optionally, a marking portion is provided on the pressing edge, and a marking mark is engraved on the marking portion.

[0012] Optionally, a limiting column is provided on the bottom plate, the limiting column is provided at one end of the pressing edge and is spaced apart from the pressing edge, and an end of the limiting column away from the bottom plate is higher than an end of the pressing edge away from the bottom plate.

[0013] Optionally, an end of the limiting column away from the bottom plate is 0.16 mm to 0.20 mm higher than an end of the pressing edge away from the bottom plate.

[0014] Optionally, a glue avoidance groove is provided on the pressing edge.

[0015] Optionally, a fixing portion is provided on the bottom plate for fixing the bottom plate on the processing equipment.

[0016] Optionally, the fixing portion is a countersunk hole.

[0017] Optionally, the first special-shaped edge, the second special-shaped edge, the third special-shaped edge and the pressed edge are an integrated structure.

[0018] The above solution of the present application has the following beneficial effects:

[0019] In the present application, the arc edge, the first special-shaped edge and the pressure edge are arranged to form a lower side groove, and the arc edge, the second special-shaped edge and the limiting edge are arranged to form an upper side groove. When encapsulating the aluminum-plastic film on the side of the L-shaped plate-type lithium battery, align the right-angled side of the bottom with the pressure edge, and snap the lower side of the second L position into the lower side groove, snap the upper side of the second L position into the upper side groove, snap the arc edge into the fillet of the second L position, and then make the upper head and the lower head close to each other to complete the encapsulation of the right-angled side of the bottom of the L-shaped plate-type lithium battery and the aluminum-plastic film at the second L position. The present application is convenient for encapsulating the right-angled side of the bottom of the L-shaped plate-type lithium battery and the aluminum-plastic film at the second L position by arranging the first special-shaped edge, the second special-shaped edge and the third special-shaped edge with the same height as the pressure edge and connected in sequence on the bottom plate, thereby improving production efficiency.

[0020] Other beneficial effects of the present application will be described in detail in the subsequent specific implementation section. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0022] Figure 1 It is a structural schematic diagram of an L-shaped plate-type lithium battery with two L positions in the prior art;

[0023] Figure 2 A schematic diagram of the structure of a side sealing mold for a special-shaped lithium battery provided in one embodiment of the present application;

[0024] Figure 3 A schematic diagram of the structure of an upper head or a lower head provided in an embodiment of the present application Figure 1 ;

[0025] Figure 4 A schematic diagram of the structure of an upper head or a lower head provided in an embodiment of the present application Figure 2 .

[0026] [Description of Reference Numerals]

[0027] 100. L-shaped plate lithium battery;

[0028] 110, first L position;

[0029] 120, second L position; 121, upper side; 122, lower side; 123, rounded corner;

[0030] 201, upper head; 202, lower head;

[0031] 210, bottom plate;

[0032] 220, edge pressing;

[0033] 231, first special-shaped edge; 232, second special-shaped edge; 233, third special-shaped edge; 234, arc edge; 235, limiting edge;

[0034] 240, marking department;

[0035] 250, limit column;

[0036] 260, glue avoidance slot;

[0037] 270. Fixed part. DETAILED DESCRIPTION

[0038] In the following description, specific details such as specific system structures, technologies, etc. are provided for the purpose of illustration rather than limitation, so as to provide a thorough understanding of the embodiments of the present application. However, it should be clear to those skilled in the art that the present application may also be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted to prevent unnecessary details from obstructing the description of the present application.

[0039] It should be understood that when used in the present specification and the appended claims, the term "comprising" indicates the presence of described features, wholes, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, wholes, steps, operations, elements, components and / or combinations thereof.

[0040] It should also be understood that the term “and / or” used in the specification and appended claims refers to any and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0041] As used in the specification and appended claims of this application, the term "if" can be interpreted as "when" or "uponce" or "in response to determining" or "in response to detecting", depending on the context. Similarly, the phrase "if it is determined" or "if [described condition or event] is detected" can be interpreted as meaning "uponce it is determined" or "in response to determining" or "uponce [described condition or event] is detected" or "in response to detecting [described condition or event]", depending on the context.

[0042] In addition, in the description of the present application specification and the appended claims, the terms "first", "second", "third", etc. are only used to distinguish the descriptions and cannot be understood as indicating or implying relative importance.

[0043] References to "one embodiment" or "some embodiments" etc. described in the specification of this application mean that one or more embodiments of the present application include specific features, structures or characteristics described in conjunction with the embodiment. Therefore, the statements "in one embodiment", "in some embodiments", "in some other embodiments", "in some other embodiments", etc. that appear in different places in this specification do not necessarily refer to the same embodiment, but mean "one or more but not all embodiments", unless otherwise specifically emphasized in other ways. The terms "including", "comprising", "having" and their variations all mean "including but not limited to", unless otherwise specifically emphasized in other ways.

[0044] The special-shaped lithium battery side sealing mold provided in the present application is exemplarily described below in conjunction with specific embodiments.

[0045] like Figure 1 As shown, the L-shaped plate-type lithium battery 100 applicable to the present application includes a first L position 110 and a second L position 120, the second L position 120 is arranged opposite to the first L position 110 and the second L position 120 is located at the right-angle side of the bottom of the L-shaped plate-type lithium battery 100, the second L position 120 has an upper side 121 and a lower side 122 connected in sequence, and the connection between the upper side 121 and the lower side 122 has an inwardly recessed rounded corner 123.

[0046] like Figure 2 and Figure 3 As shown, the special-shaped lithium battery side sealing mold provided in the embodiment of the present application includes an upper sealing head 201 and a lower sealing head 202 symmetrically arranged in the upper and lower parts, and the upper sealing head 201 and the lower sealing head 202 both include a bottom plate 210 and a pressing edge 220 arranged on the bottom plate 210; the bottom plate 210 is provided with a first special-shaped edge 231, a second special-shaped edge 232 and a third special-shaped edge 233 which are the same height as the pressing edge 220 and are connected in sequence, and the first special-shaped edge 231 is far away from the second special-shaped edge 232. One end is connected to the pressing edge 220 and is perpendicular to the pressing edge 220, the second special-shaped edge 232 is parallel to the pressing edge 220, and the end of the third special-shaped edge 233 away from the second special-shaped edge 232 is connected to the pressing edge 220; the connection between the first special-shaped edge 231 and the second special-shaped edge 232 has a convex arc edge 234 on the side away from the pressing edge 220, and the connection between the second special-shaped edge 232 and the third special-shaped edge 233 has a convex limiting edge 235 on the side away from the pressing edge 220.

[0047] In the above embodiment, the arc edge 234, the first special-shaped edge 231 and the pressing edge 220 are arranged to form a groove of the lower side 122, and the arc edge 234, the second special-shaped edge 232 and the limiting edge 235 are arranged to form a groove of the upper side 121. When the aluminum-plastic film on the side of the L-shaped plate-type lithium battery 100 is packaged, the right-angled side of the bottom is aligned with the pressing edge 220, and the lower side 122 of the second L position 120 is inserted into the groove of the lower side 122, the upper side 121 of the second L position 120 is inserted into the groove of the upper side 121, and the arc edge 234 is inserted into the fillet 123 of the second L position 120, and then the upper head 201 and the lower head 202 are brought close to each other to complete the packaging of the right-angled side of the bottom of the L-shaped plate-type lithium battery 100 and the aluminum-plastic film of the second L position 120. The present application provides a first special-shaped edge 231, a second special-shaped edge 232 and a third special-shaped edge 233 on the bottom plate 210 which are at the same height as the pressing edge 220 and are connected in sequence, thereby facilitating the packaging of the right-angled side edge of the bottom of the L-shaped plate-type lithium battery 100 and the aluminum-plastic film of the second L position 120, thereby improving production efficiency.

[0048] In one embodiment, if Figure 3 and Figure 4As shown, the connection between the first profiled edge 231 and the pressing edge 220 is chamfered.

[0049] In the above embodiment, the chamfer is used to fit with the lower side 122 of the second L position 120 to prevent the second L position 120 from being damaged when being packaged between the upper head 201 and the lower head 202 .

[0050] In one embodiment, if Figure 3 and Figure 4 As shown, a marking portion 240 is provided on the pressing edge 220 , and a marking mark is engraved on the marking portion 240 .

[0051] In the above embodiment, during the packaging process, the marking mark engraved on the marking portion 240 is engraved on the aluminum-plastic film to make a processing mark for each processed L-shaped plate-type lithium battery 100, so that when poor packaging occurs, the processing information can be quickly tracked to quickly find the source of the problem.

[0052] In one embodiment, if Figure 3 and Figure 4 As shown, a limiting column 250 is provided on the bottom plate 210 , and the limiting column 250 is provided at one end of the edge pressing 220 and is spaced apart from the edge pressing 220 , and the end of the limiting column 250 away from the bottom plate 210 is higher than the end of the edge pressing 220 away from the bottom plate 210 .

[0053] In the above embodiment, when the upper head 201 and the lower head 202 are used to package the L-shaped plate-type lithium battery 100, the limiting pillars 250 of the upper head 201 and the limiting pillars 250 of the lower head 202 are correspondingly abutted, so that there is a certain gap between the pressing edge 220 of the upper head 201 and the pressing edge 220 of the lower head 202, so as to control the packaging thickness of the aluminum-plastic film side sealing edge to meet the product requirements. In addition, when the upper head 201 and the lower head 202 are packaged, they can be aligned by their respective limiting pillars 250 to ensure the alignment and prevent the upper head 201 and the lower head 202 from being misaligned.

[0054] In a specific embodiment, one end of the limiting column 250 away from the bottom plate 210 is 0.16 mm to 0.20 mm higher than one end of the pressing edge 220 away from the bottom plate 210 .

[0055] In a more specific embodiment, two limiting posts 250 are disposed on the bottom plate 210, and the two limiting posts 250 are respectively located at two ends of the pressing edge 220. The two limiting posts 250 are disposed to facilitate alignment.

[0056] Preferably, one end of the limiting column 250 away from the bottom plate 210 is 0.18 mm higher than one end of the pressing edge 220 away from the bottom plate 210 .

[0057] In one embodiment, if Figure 3 and Figure 4 As shown, a glue avoiding groove 260 is provided on the pressing edge 220 .

[0058] In the above embodiment, glue avoiding grooves 260 are provided on the pressing edges 220 of the upper head 201 and the lower head 202, and the two glue avoiding grooves 260 are arranged correspondingly, which can accommodate excess glue overflow during packaging and prevent the glue from being glued to the battery body during packaging, causing the battery cell to have a poor appearance and be scrapped.

[0059] In one embodiment, if Figure 3 and Figure 4 As shown, a fixing portion 270 is provided on the bottom plate 210 for fixing the bottom plate 210 on the processing equipment.

[0060] In the above embodiment, the fixing portion 270 is mainly used to fix the bottom plate 210 of the upper sealing head 201 and the bottom plate 210 of the lower sealing head 202 on the processing equipment (lithium battery top side edge sealing machine).

[0061] In a specific embodiment, Figure 3 and Figure 4 As shown, the fixing portion 270 is a countersunk hole.

[0062] In the above embodiment, the bottom plate 210 can be fixed to the processing equipment (lithium battery top side edge sealing machine) by passing bolts through the countersunk holes. Specifically, the countersunk holes are elliptical. The elliptical countersunk holes can more conveniently adjust the deviation during the assembly process and have great flexibility.

[0063] In one embodiment, if Figure 3 and Figure 4 As shown, the first special-shaped edge 231 , the second special-shaped edge 232 , the third special-shaped edge 233 and the pressing edge 220 are an integrated structure.

[0064] In the above embodiment, the first special-shaped edge 231, the second special-shaped edge 232, the third special-shaped edge 233 and the pressing edge 220 are an integrated structure, which can reduce the assembly links on the production line and improve production efficiency; and the connection strength between the first special-shaped edge 231, the second special-shaped edge 232, the third special-shaped edge 233 and the pressing edge 220 is also higher.

[0065] The above is a preferred embodiment of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles described in the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. A special-shaped lithium battery side sealing mold, comprising an upper sealing head and a lower sealing head symmetrically arranged up and down, wherein the upper sealing head and the lower sealing head both comprise a bottom plate and a pressing edge arranged on the bottom plate, characterized in that: The bottom plate is provided with a first profiled edge, a second profiled edge and a third profiled edge having the same height as the edge pressing and connected in sequence, wherein one end of the first profiled edge away from the second profiled edge is connected to the edge pressing and is perpendicular to the edge pressing, the second profiled edge is parallel to the edge pressing, and one end of the third profiled edge away from the second profiled edge is connected to the edge pressing; A connection between the first special-shaped edge and the second special-shaped edge has a convex arc edge on a side away from the pressing edge, and a connection between the second special-shaped edge and the third special-shaped edge has a convex limiting edge on a side away from the pressing edge.

2. The special-shaped lithium battery side sealing mold according to claim 1, characterized in that: The connection between the first special-shaped edge and the pressing edge is chamfered.

3. The special-shaped lithium battery side sealing mold according to claim 1, characterized in that: The pressing edge is provided with a marking portion, and the marking portion is engraved with a marking mark.

4. The special-shaped lithium battery side sealing mold according to claim 1, characterized in that: A limiting column is arranged on the bottom plate, the limiting column is arranged at one end of the pressing edge and is spaced apart from the pressing edge, and one end of the limiting column away from the bottom plate is higher than the other end of the pressing edge away from the bottom plate.

5. The special-shaped lithium battery side sealing mold according to claim 4, characterized in that: The end of the limiting column away from the bottom plate is 0.16 mm to 0.20 mm higher than the end of the pressing edge away from the bottom plate.

6. The special-shaped lithium battery side sealing mold according to claim 1, characterized in that: The pressing edge is provided with a glue avoiding groove.

7. The special-shaped lithium battery side sealing mold according to claim 1, characterized in that: The bottom plate is provided with a fixing portion for fixing the bottom plate on processing equipment.

8. The special-shaped lithium battery side sealing mold according to claim 7, characterized in that: The fixing portion is a countersunk hole.

9. The special-shaped lithium battery side sealing mold according to claim 1, characterized in that: The first special-shaped edge, the second special-shaped edge, the third special-shaped edge and the pressing edge are in an integrated structure.

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