Soft package battery and electric equipment with same

Abstract

The utility model provides a soft package battery and electric equipment provided with the same. The soft package battery provided by the embodiment of the utility model comprises a shell and a battery cell, the shell is provided with a containing cavity, the battery cell is arranged in the containing cavity, and a tab of the battery cell extends out of the shell. The end part, provided with the tab, of the battery cell is provided with a thinning area, and a compensation piece is arranged between the shell and the thinning area. According to the soft package battery disclosed by the embodiment of the utility model, the compensation piece is arranged between the shell and the thinning area, so that the thickness of the thinning area of the battery cell can be compensated, the pressure on each part of the battery cell in the packaging process is consistent, and the packaging effect of the battery cell and the performance of the battery can be greatly improved. Therefore, the soft package battery provided by the embodiment of the utility model has the characteristics of good packaging effect and good battery performance.

Description

TECHNICAL FIELD

[0001] The utility model relates to battery technology field especially relates to a soft package battery and electric equipment with it. BACKGROUND

[0002] The soft package battery refers to the battery structure formed by using the aluminum plastic film to package the battery cell.

[0003] In the related art, the pole piece of the multi-pole ear or lamination structure battery cell needs to leave a foil area at the edge of the current collector for leading out the pole ear during the coating process. Since the active material slurry has fluidity, the thickness of the active material layer in the edge area adjacent to the foil area is less than or greater than the thickness of the active material layer in other areas, so that the end (top) of the pole ear of the battery cell formed by manufacturing has a thinning area, which results in low flatness of the battery cell as a whole, so that the pressure received by each part of the battery cell during the packaging process is different, thereby leading to poor packaging effect of the battery cell and further leading to poor performance of the battery. SUMMARY

[0004] In view of the problems of poor packaging effect and poor performance of the existing soft package battery, the utility model provides a soft package battery and electric equipment with the same.

[0005] The soft package battery of the utility model embodiment comprises:

[0006] A shell having a receiving cavity;

[0007] A battery cell arranged in the receiving cavity, and a pole ear of the battery cell extending out of the shell;

[0008] The end of the pole ear of the battery cell has a thinning area, and a compensation member is arranged between the shell and the thinning area.

[0009] It can be understood that, during the coating process of the multi-pole ear or lamination structure battery cell, the foil area needs to be left at the edge of the current collector for leading out the pole ear. Since the active material slurry has fluidity, the thickness of the active material layer in the edge area adjacent to the foil area is less than or greater than the thickness of the active material layer in other areas, so that the end (top) of the pole ear of the battery cell formed by manufacturing has a thinning area.

[0010] Therefore, the soft package battery of the utility model embodiment can compensate the thickness of the thinning area of the battery cell by arranging the compensation member between the shell and the thinning area, so that the pressure received by each part of the battery cell during the packaging process is consistent, thereby greatly improving the packaging effect of the battery cell and the performance of the battery.

[0011] Therefore, the soft package battery of the utility model embodiment has the characteristics of good packaging effect and good battery performance.

[0012] In some embodiments, the compensation member is arranged in the housing at a position corresponding to the thinned area, and / or,

[0013] The compensation member is arranged in the thinned area.

[0014] In some embodiments, the compensation member is an insulating adhesive tape.

[0015] In some embodiments, the width of the insulating adhesive tape is 5mm-20mm, and / or,

[0016] The thickness of the insulating adhesive tape is 10um-50um, and / or,

[0017] The length of the insulating adhesive tape is the width of the battery cell-2mm.

[0018] In some embodiments, the housing is an aluminum plastic film with a punched pit;

[0019] The punched pit is two, and the two punched pits are a first punched pit and a second punched pit, and the first punched pit and the second punched pit combine to form the accommodation cavity; or,

[0020] The punched pit is single, and the single punched pit is a third punched pit, and the third punched pit and the part of the aluminum plastic film corresponding to the punched pit define the accommodation cavity.

[0021] In some embodiments, the first punched pit and / or the second punched pit is provided with the compensation member at a position corresponding to the thinned area.

[0022] In some embodiments, the third punched pit is provided with the compensation member at a position corresponding to the thinned area, and / or,

[0023] The aluminum plastic film corresponding to the third punched pit is provided with the compensation member.

[0024] In some embodiments, the compensation member located on one side of the accommodation cavity is one or more.

[0025] In some embodiments, the compensation member is arranged along a length direction or a width direction parallel to the battery cell.

[0026] The utility model embodiment further provides a kind of electric equipment, including the soft package battery as described in above embodiment. BRIEF DESCRIPTION OF DRAWINGS

[0027] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the description of the embodiments of the present application. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0028] Figure 1 is a structural schematic diagram of the embodiment of the present application.

[0029] Figure 2 is a structural schematic diagram of another embodiment of the present application.

[0030] In the drawings:

[0031] 1, shell; 101, accommodating cavity;

[0032] 2, battery cell; 201, tab; 202, thinning area;

[0033] 3, compensation piece;

[0034] 4, first pit;

[0035] 5, second pit;

[0036] 6, third pit. DETAILED DESCRIPTION

[0037] In order to make the technical problems, technical schemes and beneficial effects solved by the present application more clear, the following will further describe the present application in combination with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application, and are not used to limit the present application.

[0038] In the description of the present application, it should be understood that the orientation or position relationship indicated by the terms "longitudinal", "radial", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In the description of the present application, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0039] In the description of the utility model, it is necessary to explain that, unless there are definite provisions and limitation, the terms "installation", "connection", "connection" should be understood in broad sense, for example, it can be fixed connection, also can be detachable connection, or integrally connected, can be mechanical connection, also can be electrical connection, can be direct connection, also can be indirectly connected through intermediate medium, can be the glue injection 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 specific circumstances.

[0040] The utility model discloses a soft package battery. Figures 1-2 A soft package battery is described.

[0041] The utility model embodiment soft package battery includes shell 1 and electric core 2.

[0042] As Figures 1-2 Shown, shell 1 has accommodating cavity 101, and electric core 2 is located in accommodating cavity 101, and the tab 201 of electric core 2 extends shell 1.

[0043] The end portion of the tab 201 of the electric core 2 is provided with a thinning area 202, and a compensation member 3 is arranged between the shell 1 and the thinning area 202.

[0044] It can be understood that, in the coating process, the pole piece of the multi-tab 201 or the lamination structure electric core 2 needs to leave a foil area at the edge of the current collector for leading out the tab 201, and since the active material slurry has fluidity, the thickness of the active material layer in the edge area adjacent to the foil area in the coating area is less than or greater than the thickness of the active material layer in other areas, so that the end portion (top portion) of the electric core 2 formed by the manufacturing has a thinning area 202.

[0045] Therefore, the soft package battery of the utility model embodiment can compensate the thickness of the thinning area 202 of the electric core 2 by arranging the compensation member 3 between the shell 1 and the thinning area 202, so that the pressure received by the electric core 2 at each position during the packaging process is consistent, thereby greatly improving the packaging effect of the electric core 2 and greatly improving the performance of the battery.

[0046] Therefore, the soft package battery of the utility model embodiment has the characteristics of good packaging effect and good battery performance.

[0047] In some embodiments, the compensation member 3 is arranged in the shell 1 at a position corresponding to the thinning area 202, or the compensation member 3 is arranged at the thinning area 202 of the electric core 2.

[0048] Alternatively, the compensation member 3 is provided in the shell 1 at the position corresponding to the thinned area 202 and on the thinned area 202 of the battery cell 2, that is, a part of the compensation member 3 is provided in the shell 1 at the position corresponding to the thinned area 202, and another part is provided on the thinned area 202 of the battery cell 2, that is, the part of the compensation member 3 provided in the shell 1 at the position corresponding to the thinned area 202 and the other part of the compensation member 3 provided on the thinned area 202 of the battery cell 2 correspondingly jointly form a complete compensation member 3.

[0049] Optionally, the compensation member 3 is insulating adhesive paper.

[0050] It can be understood that the soft package battery of the embodiment of the utility model sets the compensation member 3 as insulating adhesive paper, on the one hand, the insulating adhesive paper has insulation, and application in the battery interior will not cause the battery short circuit, on the other hand, the insulating adhesive paper is convenient to obtain, and the use cost is lower, and on the basis that the packaging effect of the battery cell 2 and the performance of the battery can be improved, the production cost of the battery is not excessively increased.

[0051] In some embodiments, the width of the insulating adhesive paper is 5mm-20mm, and / or,

[0052] The thickness of the insulating adhesive paper can be 10μm-50μm, and / or,

[0053] The length of the insulating adhesive paper is the width of the battery cell 2-2mm.

[0054] Optionally, the width of the insulating adhesive paper can be any one of 5mm, 6mm, 7mm, 8mm, 9mm, 10mm, 11mm, 12mm, 13mm, 14mm, 15mm, 16mm, 17mm, 18mm, 19mm, 20mm.

[0055] Optionally, the thickness of the insulating adhesive paper can be any one of 10μm, 11μm, 12μm, 13μm, 14μm, 15μm, 16μm, 17μm, 18μm, 19μm, 20μm, 21μm, 22μm, 23μm, 24μm, 25μm, 26μm, 27μm, 28μm, 29μm, 30μm, 31μm, 32μm, 33μm, 34μm, 35μm, 36μm, 37μm, 38μm, 39μm, 40μm, 41μm, 42μm, 43μm, 44μm, 45μm, 46μm, 47μm, 48μm, 49μm, 50μm.

[0056] It can be understood that the width of the insulating adhesive paper and the thickness of the insulating adhesive paper can be determined according to actual needs by those skilled in the art.

[0057] In some embodiments, as Figures 1-2As shown, the shell 1 is an aluminum plastic film with a punched pit, which can be punched by a punching machine.

[0058] Further, as shown, Figure 2 The punched pit can be two, namely a first punched pit 4 and a second punched pit 5, which combine to form the accommodation cavity 101. Specifically, the first punched pit 4 and the second punched pit 5 are symmetrically arranged on the aluminum plastic film, and the aluminum plastic film can be folded along the symmetry axis of the first punched pit 4 and the second punched pit 5, so that the first punched pit 4 and the second punched pit 5 correspond in the thickness direction of the battery, and then the first punched pit 4 and the second punched pit 5 can combine to form the accommodation cavity 101 for accommodating the battery cell 2.

[0059] Therefore, the first punched pit 4 and / or the second punched pit 5 is provided with a compensation piece 3 corresponding to the position of the thinning area 202. In other words, the compensation piece 3 can be arranged at the position of the first punched pit 4 corresponding to the thinning area 202, or the compensation piece 3 can be arranged at the position of the second punched pit 5 corresponding to the thinning area 202, or the compensation piece 3 can be arranged at the position of the first punched pit 4 corresponding to the thinning area 202 and the position of the second punched pit 5 corresponding to the thinning area 202.

[0060] Further, as shown, Figure 1 The punched pit can be a single third punched pit 6, which defines the accommodation cavity 101 with the aluminum plastic film corresponding thereto. Specifically, the aluminum plastic film corresponding to the third punched pit 6 is folded to cover the third punched pit 6, so that the third punched pit 6 and the aluminum plastic film corresponding thereto can define the accommodation cavity 101 for accommodating the battery cell 2.

[0061] It should be noted that the bending part at the edge of the aluminum plastic film corresponding to the third punched pit 6 and the tab 201 is an adaptive deformation of the aluminum plastic film to better adapt to the structure of the battery cell 2, and is not a punched pit formed by punching.

[0062] Therefore, the third punched pit 6 is provided with a compensation piece 3 corresponding to the position of the thinning area 202, and / or the aluminum plastic film corresponding to the third punched pit 6 is provided with a compensation piece 3 corresponding to the position of the thinning area 202.

[0063] In other words, the compensation piece 3 can be arranged at the position of the third punched pit 6 corresponding to the thinning area 202, or the compensation piece 3 can be arranged at the position of the aluminum plastic film corresponding to the third punched pit 6 corresponding to the thinning area 202, or the compensation piece 3 can be arranged at the position of the third punched pit 6 corresponding to the thinning area 202 and the position of the aluminum plastic film corresponding to the third punched pit 6 corresponding to the thinning area 202.

[0064] In some embodiments, the compensation piece 3 located on one side of the accommodation cavity 101 is one or more.

[0065] For example, the insulating adhesive paper on one side of the accommodating cavity 101 can be provided as one or more, and the number can be set according to actual compensation requirements.

[0066] In some embodiments, the compensation member 3 is arranged along a length direction or a width direction of the battery cell 2.

[0067] For example, the insulating adhesive paper can be arranged along a length direction of the battery cell 2, or arranged along a width direction of the battery cell 2, and the arrangement direction can be set according to compensation requirements.

[0068] The utility model embodiment further provides a kind of electric equipment, including the soft package battery described in above embodiment.

[0069] The electric equipment of the utility model embodiment is provided with the soft package battery of above embodiment, as described above, the soft package battery of the utility model embodiment is provided with compensation member 3 between shell 1 and thinning area 202, the thickness of the thinning area 202 of battery cell 2 can be compensated, so that the pressure received by each part of battery cell 2 is consistent during packaging process, the packaging effect of battery cell 2 can be greatly improved, and the performance of battery is greatly improved.The soft package battery has the characteristics of good packaging effect and good battery performance, and the performance of electric equipment can be greatly improved.

[0070] The above-described embodiments are only used to illustrate the technical solutions of the utility model, rather than limit them; although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that the technical solutions recorded in the foregoing embodiments can be modified, or some technical features can be replaced equivalently; these modifications or replacements do not change the essence of the corresponding technical solutions, and should be included in the protection scope of the utility model.

Claims

1. A pouch battery, characterized by, The application relates to a soft package battery. The shell (1) has a containing cavity (101); The electric core (2) is arranged in the containing cavity (101), and the tab (201) of the electric core (2) extends out of the shell (1); The electric core (2) is provided with a thinned area (202) at the end of the tab (201), and a compensation piece (3) is arranged between the shell (1) and the thinned area (202).

2. The pouch battery of claim 1, wherein, The compensation piece (3) is arranged in the shell (1) at a position corresponding to the thinned area (202), and / or The compensation piece (3) is arranged at the thinned area (202). 3.The pouch battery of claim 1, wherein, The compensation piece (3) is insulating adhesive paper.

4. The pouch battery of claim 3, wherein, The width of the insulating adhesive paper is 5-20 mm, and / or The thickness of the insulating adhesive paper is 10-50 microns, and / or The length of the insulating adhesive paper is the width of the electric core (2) minus 2 mm. 5.The pouch battery of claim 1, wherein, The shell (1) is an aluminum plastic film with punched pits; The punched pits are two, and the two punched pits are a first punched pit (4) and a second punched pit (5), the first punched pit (4) and the second punched pit (5) are combined to form the containing cavity (101); or The punched pit is single, and the single punched pit is a third punched pit (6), the third punched pit (6) and the aluminum plastic film corresponding to the punched pit define the containing cavity (101).

6. The pouch battery of claim 5, wherein, The first punched pit (4) and / or the second punched pit (5) are provided with the compensation piece (3) at a position corresponding to the thinned area (202). 7.The pouch battery of claim 5, wherein, The third punched pit (6) is provided with the compensation piece (3) at a position corresponding to the thinned area (202), and / or The aluminum plastic film corresponding to the third punched pit (6) is provided with the compensation piece (3). 8.The pouch battery of claim 1, wherein, The compensation piece (3) located at one side of the containing cavity (101) is one or more. 9.The pouch battery of claim 1, wherein, The compensation piece (3) is arranged along the length direction or the width direction of the electric core (2).

10. An electric device comprising the soft package battery according to any one of claims 1-9.

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