CN215143979U - Mould of multiplicable electric core plastic-aluminum membrane tensile degree of depth - Google Patents
Mould of multiplicable electric core plastic-aluminum membrane tensile degree of depth Download PDFInfo
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- CN215143979U CN215143979U CN202121155777.7U CN202121155777U CN215143979U CN 215143979 U CN215143979 U CN 215143979U CN 202121155777 U CN202121155777 U CN 202121155777U CN 215143979 U CN215143979 U CN 215143979U
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Abstract
The utility model provides a mould of multiplicable electric core plastic-aluminum membrane tensile degree of depth. Mould of multiplicable electric core plastic-aluminum membrane tensile depth includes the mold core fixed plate, locates mold core on the mold core fixed plate, locates the cope match-plate pattern and the clamp of mold core fixed plate one side are located the mold core fixed plate with lower bolster between the cope match-plate pattern, the cope match-plate pattern orientation first recess has been seted up at the lateral part corner of lower bolster and/or the lower bolster orientation the second recess has been seted up at the lateral part corner of cope match-plate pattern, the cope match-plate pattern with space between the lower bolster is for being used for the centre gripping space of centre gripping electric core plastic-aluminum membrane, first through-hole has been seted up on the cope match-plate pattern, the second through-hole has been seted up on the lower bolster. The utility model provides a mould of multiplicable electric core plastic-aluminum membrane tensile degree of depth, plastic-aluminum membrane packing die cavity can be by tensile darker, can not appear the crackle, can satisfy the packaging technology requirement of thicker electric core, and the electric core of making is safer, and the outward appearance is more pleasing to the eye.
Description
Technical Field
The utility model relates to a mould of multiplicable electric core plastic-aluminum membrane tensile degree of depth.
Background
With the rapid development of electronic technology, especially the heavy use of portable electronic devices, the demand for batteries is higher and higher, especially the demand for volumetric energy and safety of batteries is higher and higher. The lithium ion battery adopting the flexible package structure is popular with battery manufacturers and users due to safety, reliability, simple and flexible process. However, in the manufacturing process of the flexible package battery, the depth limit is difficult to break through due to the stretching of the aluminum plastic film. At present, for the aluminum plastic film with the maximum thickness of 113um used in the industry, the stretching forming depth on a large battery is difficult to exceed 6 mm; the stretch-formed depth on the medium-sized small-sized battery is hardly more than 5 mm; in the TWS (true wireless bluetooth type) battery which has attracted much attention in recent years, the stretching depth of the 113um aluminum-plastic film is difficult to reach 3.5mm or more due to the small size of the cavity, especially for the cell with the size of 15mm or less, which brings great difficulty to the design and manufacture of the TWS cell.
SUMMERY OF THE UTILITY MODEL
In view of the above, it is necessary to provide a mold capable of increasing the drawing depth of the aluminum-plastic film of the cell.
The utility model provides a mould of multiplicable electric core plastic-aluminum membrane tensile depth, includes the mold core fixed plate, locates mold core on the mold core fixed plate, locate the cope match-plate pattern of mold core fixed plate one side and press from both sides and locate the mold core fixed plate with lower bolster between the cope match-plate pattern, the cope match-plate pattern orientation first recess has been seted up at the lateral part corner of lower bolster and/or the lower bolster orientation the second recess has been seted up at the lateral part corner of cope match-plate pattern, the cope match-plate pattern with space between the lower bolster is for being used for centre gripping electric core plastic-aluminum membrane's centre gripping space, first through-hole has been seted up on the cope match-plate pattern, the second through-hole has been seted up on the lower bolster, first through-hole with the position of seting up of second through-hole with the mold core sets up the position corresponding.
Furthermore, the upper template is plate-shaped, and a first groove is formed in the upper template towards the corner of the side part of the lower template.
Furthermore, the number of the first grooves is four, and the four first grooves are respectively arranged at four corners of the side portion of the upper template facing the lower template.
Furthermore, the lower template is plate-shaped, and a second groove is formed in the lower template towards the corner of the side portion of the upper template.
Furthermore, the number of the second grooves is four, and the four second grooves are respectively arranged at four corners of the lower template facing the side of the upper template.
Further, the first groove and the second groove are equilateral pitch grooves with the width of 2mm to 8mm and the depth of 0.01mm to 0.05 mm.
Furthermore, the number of the mold cores is 4, and the number of the first through holes and the number of the second through holes are the same as the number of the mold cores.
Furthermore, a limiting piece is arranged on the mold core fixing plate, a third through hole is formed in the lower template, and the forming position of the third through hole corresponds to the forming position of the limiting piece.
Furthermore, the number of the limiting pieces is 2, and the number of the third through holes is the same as the number of the limiting pieces.
The utility model provides a mould of multiplicable electric core plastic-aluminum membrane tensile depth, increase round width about 2-8mm through the electric core packaging film die cavity at plastic-aluminum membrane stretch forming die's lower bolster around, the degree of depth is 0.01~0.05 mm's equilateral pitch recess, push down when the mould cope match-plate pattern, the cope match-plate pattern is in the same place, carry the plastic-aluminum composite film and prepare stretch forming, thus, the die cavity hole that has the concave station on the lower bolster is passed to the mold core, upwards push into the cope match-plate pattern die cavity with the plastic-aluminum membrane and draw when stretching the shaping, the peripheral plastic-aluminum membrane of die cavity has the round recess because of on the lower bolster, so be in the state of relaxing, can have certain horizontal slip displacement volume, make the plastic-aluminum membrane packaging die cavity can be by tensile more dark and difficult damage like this. The aluminum plastic film formed by the mold structure and the stretching process method has deeper cavity depth, cracks can not occur, the packaging process requirement of a thicker electric core can be met, the manufactured electric core is safer, and the appearance is more attractive.
To sum up, the utility model discloses a mould of multiplicable electric core plastic-aluminum membrane tensile depth, increase the round recess at lower template type chamber or cope match-plate pattern chamber periphery, make this peripheral great plastic-aluminum membrane of die cavity be in "relax" state, can have appropriate relative slip at the stretch forming volume, improve the mobility of plastic-aluminum membrane in the forming process, thereby reduced the stress by the plastic-aluminum membrane of tensile type intracavity, it is darker to make the plastic-aluminum membrane tensile forming depth, the thickness uniformity of die cavity department is better, the fracture of aluminium lamination has been prevented, the security of battery has been guaranteed. The aluminum-plastic film formed by stretching by the method has a cell with the size of more than 100mm, and the depth of a cavity of the cell can reach more than 7 mm. The stretching forming depth of the aluminum plastic film of the medium-sized battery cell with the size of 100-15 mm can reach more than 6 mm; the TWS round or square battery core with the size below 15mm has the aluminum plastic film stretching forming depth of more than 4 mm.
In addition, the TWS type battery that uses this patent technique to do, circular winding structure electricity core especially, axial dimension just can do bigger a little, just so can adopt the pole piece of broad to coil, not only can improve the energy density of battery, because of the utmost point ear is wideer, so it is easier in the design, risks such as can not appear the fragmentation, and the security of product is also more guaranteed.
Moreover, for the round cake-shaped winding type TWS battery manufactured by the technology, for the battery with the thickness of the battery cell below 5.5mm, if the forming depth of the aluminum plastic film can reach more than 4.0mm, the battery cell does not need to be folded with a lug when being packaged. Therefore, the space utilization rate of the battery is improved, the energy density is improved, the damage to the battery core pole piece caused by folding the pole ear can be prevented, the performance and the safety of the battery are improved, the pole ear folding process is reduced, the production efficiency is improved, and the production cost is reduced.
Drawings
In order to more clearly illustrate the technical solution of the present invention, the drawings used in the embodiments will be briefly described below, and obviously, the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained according to the drawings without creative efforts for those skilled in the art.
Fig. 1 is an exploded view of a mold for increasing the drawing depth of an aluminum-plastic film of a cell according to an embodiment;
fig. 2 is an exploded view of another embodiment of a mold for increasing the drawing depth of an aluminum-plastic film of a cell.
The names corresponding to the reference numbers in the drawings are as follows:
the die core comprises a die core fixing plate 1, a die core 2, an upper die plate 3, a lower die plate 4, a first groove 31, a second groove 41, a first through hole 33 and a second through hole 42.
Detailed Description
The following is a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations are also considered as the protection scope of the present invention.
Please refer to fig. 1-2, the utility model discloses a mould of multiplicable electric core plastic-aluminum membrane drawing depth, include mold core fixed plate 1, locate mold core 2 on the mold core fixed plate, locate the cope match-plate pattern 3 and the clamp of mold core fixed plate one side are located the mold core fixed plate with lower bolster 4 between the cope match-plate pattern, the cope match-plate pattern orientation first recess 31 has been seted up at the lateral part corner of lower bolster and/or the second recess 41 has been seted up at the lateral part corner of cope match-plate pattern to the lower bolster orientation, the cope match-plate pattern with space between the lower bolster is for being used for the centre gripping electric core plastic-aluminum membrane's clamping space, first through-hole 33 has been seted up on the cope match-plate pattern, the second through-hole 42 has been seted up on the lower bolster, first through-hole with the position of seting up of second through-hole with the mold core sets up the position corresponding.
In one embodiment, the upper plate has a plate shape, and the upper plate is opened with a first groove 31 toward a side corner of the lower plate.
In another embodiment, the number of the first grooves is four, and four first grooves are respectively formed at four corners of the side portion of the upper template facing the lower template.
In one embodiment, the lower template is plate-shaped, and the lower template is provided with a second groove 41 facing a side corner of the upper template.
In another embodiment, the number of the second grooves is four, and four second grooves are respectively formed at four corners of the side portion of the lower template facing the upper template.
In one embodiment, the first and second grooves are equilateral pitch grooves having a width of 2mm to 8mm and a depth of 0.01mm to 0.05 mm.
Referring to fig. 1, in one embodiment, the number of the mold cores is 4, and the number of the first through holes and the number of the second through holes are the same as the number of the mold cores.
In one embodiment, a limiting member (not shown) is disposed on the core fixing plate, a third through hole (not shown) is disposed on the lower mold plate, and an opening position of the third through hole corresponds to an opening position of the limiting member.
In one embodiment, the number of the limiting members is 2, and the number of the third through holes is the same as the number of the limiting members.
The utility model discloses a die of tensile degree of depth of multiplicable electric core plastic-aluminum membrane's theory of operation is: firstly, driving an upper template of a mould to press downwards by an air cylinder, and clamping an aluminum-plastic composite film by the upper template and the lower template together to prepare for stretch forming; and then, the servo motor drives the mold core fixing plate to enable the mold core to continuously move upwards after passing through the cavity hole with the concave platform on the lower template, and the aluminum-plastic film is pushed into the cavity of the upper template to be drawn and formed into the required shape and depth. Because the peripheral plastic-aluminum membrane of mold core has the round recess on the lower bolster, so be in the relaxed state, can have certain horizontal slip displacement volume, make the plastic-aluminum membrane packing die cavity can be stretched more deeply and difficult damaged like this. The aluminum-plastic film formed by the mold structure and the stretching process method has deeper cavity depth, does not generate cracks, and can meet the packaging process requirement of a thicker electric core; for the round cake-shaped battery made by the winding process, the process method of not folding the tabs can be adopted for packaging, the process is simple, the space and the cost can be saved, the energy density is improved, the performance and the safety of the battery are better, and the appearance is more attractive.
The utility model discloses a mould of multiplicable electric core plastic-aluminum membrane tensile depth, increase the round recess at lower template die cavity or cope match-plate pattern cavity periphery, make this peripheral great plastic-aluminum membrane of die cavity be in "relax" state, there can be appropriate relative slip at the stretch forming volume, improve the mobility of plastic-aluminum membrane in the forming process, thereby the stress of the plastic-aluminum membrane of being stretched the die cavity has been reduced, it is darker to make the plastic-aluminum membrane tensile forming depth, the thickness uniformity of die cavity department is better, the fracture of aluminium lamination has been prevented, the security of battery has been guaranteed. The aluminum-plastic film formed by stretching by the method has a cell with the size of more than 100mm, and the depth of a cavity of the cell can reach more than 7 mm. The stretching forming depth of the aluminum plastic film of the medium-sized battery cell with the size of 100-15 mm can reach more than 6 mm; the TWS round or square battery core with the size below 15mm has the aluminum plastic film stretching forming depth of more than 4 mm.
In addition, the TWS type battery that uses this patent technique to do, circular winding structure electricity core especially, axial dimension just can do bigger a little, just so can adopt the pole piece of broad to coil, not only can improve the energy density of battery, because of the utmost point ear is wideer, so it is easier in the design, risks such as can not appear the fragmentation, and the security of product is also more guaranteed.
Moreover, for the round cake-shaped winding type TWS battery manufactured by the technology, for the battery with the thickness of the battery cell below 5.5mm, if the forming depth of the aluminum plastic film can reach more than 4.0mm, the battery cell does not need to be folded with a lug when being packaged. Therefore, the space utilization rate of the battery is improved, the energy density is improved, the damage to the battery core pole piece caused by folding the pole ear can be prevented, the performance and the safety of the battery are improved, the pole ear folding process is reduced, the production efficiency is improved, and the production cost is reduced.
The above embodiments only express the specific embodiments of the present invention, and the description thereof is specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several changes and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.
Claims (9)
1. The utility model provides a mould of tensile degree of depth of multiplicable electric core plastic-aluminum membrane which characterized in that: including the mold core fixed plate, locate mold core on the mold core fixed plate, locate the cope match-plate pattern and the clamp of mold core fixed plate one side are located the mold core fixed plate with lower bolster between the cope match-plate pattern, the cope match-plate pattern orientation first recess has been seted up at the lateral part corner of lower bolster and/or the lower bolster orientation second recess has been seted up at the lateral part corner of cope match-plate pattern, the cope match-plate pattern with space between the lower bolster is for being used for the centre gripping electric core plastic-aluminum membrane's centre gripping space, first through-hole has been seted up on the cope match-plate pattern, the second through-hole has been seted up on the lower bolster, first through-hole with the position of seting up of second through-hole with the mold core sets up the position corresponding.
2. The mold capable of increasing the drawing depth of the electric core aluminum-plastic film according to claim 1, wherein: the upper template is plate-shaped, and a first groove is formed in the upper template towards the corner of the side part of the lower template.
3. The mold capable of increasing the drawing depth of the electric core aluminum-plastic film according to claim 2, wherein: the number of the first grooves is four, and the four first grooves are respectively arranged at four corners of the side portion of the upper template facing the lower template.
4. The mold capable of increasing the drawing depth of the electric core aluminum-plastic film according to claim 1, wherein: the lower template is plate-shaped, and a second groove is formed in the lower template towards the corner of the side portion of the upper template.
5. The mold of claim 4, wherein the mold is capable of increasing the drawing depth of the aluminum-plastic film of the cell, and is characterized in that: the number of the second grooves is four, and the four second grooves are respectively arranged at four corners of the lower template facing the side part of the upper template.
6. The mold capable of increasing the drawing depth of the electric core aluminum-plastic film according to claim 1, wherein: the first groove and the second groove are equilateral pitch grooves with the width of 2mm to 8mm and the depth of 0.01mm to 0.05 mm.
7. The mold of claim 6, wherein the mold is capable of increasing the drawing depth of the aluminum-plastic film of the cell, and is characterized in that: the number of the mold cores is 4, and the number of the first through holes and the number of the second through holes are the same as the number of the mold cores.
8. The mold of claim 7, wherein the mold is capable of increasing the drawing depth of the aluminum-plastic film of the cell, and is characterized in that: the mold core fixing plate is provided with a limiting part, the lower template is provided with a third through hole, and the opening position of the third through hole corresponds to the opening position of the limiting part.
9. The mold of claim 8, wherein the mold is capable of increasing the drawing depth of the aluminum-plastic film of the cell, and is characterized in that: the number of the limiting pieces is 2, and the number of the third through holes is the same as the number of the limiting pieces.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121155777.7U CN215143979U (en) | 2021-05-27 | 2021-05-27 | Mould of multiplicable electric core plastic-aluminum membrane tensile degree of depth |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121155777.7U CN215143979U (en) | 2021-05-27 | 2021-05-27 | Mould of multiplicable electric core plastic-aluminum membrane tensile degree of depth |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215143979U true CN215143979U (en) | 2021-12-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121155777.7U Active CN215143979U (en) | 2021-05-27 | 2021-05-27 | Mould of multiplicable electric core plastic-aluminum membrane tensile degree of depth |
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| Country | Link |
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| CN (1) | CN215143979U (en) |
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2021
- 2021-05-27 CN CN202121155777.7U patent/CN215143979U/en active Active
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