Soft package battery and electric equipment with same

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By setting adhesive components, especially double-sided adhesive, at the electrode connection section, the problem of poor sealing caused by the shaking of the electrode tabs in soft-pack batteries is solved, achieving better sealing effect and cost control.

CN223884508UActive Publication Date: 2026-02-06SHENZHEN HIGHPOWER TECH CO LTD

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Patent Information

Application Number: CN202423214927.3
Authority / Receiving Office: CN · China
Patent Type: Utility models(China)
Current Assignee / Owner
Filing Date: 2024-12-25
Publication Date: 2026-02-06
Estimated Expiration: 2034-12-25

AI Technical Summary

Technical Problem

The sealant position of the soft-pack battery is not fixed after the tabs are bent, resulting in poor sealing effect.

Method used

An adhesive, especially double-sided tape, is placed between the first and second connecting sections of the electrode tab to fix the bent electrode tab and ensure that the sealant falls accurately into the encapsulation area of the housing.

Benefits of technology

This improves the packaging effect of pouch batteries, avoids the problem of incomplete packaging, and reduces manufacturing costs.

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Abstract

The utility model provides a soft package battery and electric equipment, the soft package battery of the embodiment of the utility model comprises a shell, a battery cell and a bonding piece, the shell is provided with an accommodating cavity, the battery cell is arranged in the accommodating cavity, the battery cell is provided with a positive pole lug and a negative pole lug, one end of the positive pole lug is connected with the battery cell, and the other end of the positive pole lug extends out of the shell; one end of the negative tab is connected with the battery cell, and the other end of the negative tab extends out of the shell; the positive tab and / or the negative tab comprises a first connecting section, a first bending section, a second connecting section, a second bending section and a third connecting section which are connected in sequence; one side of the bonding piece is bonded with the side, deviating from the battery cell, of the first connecting section, the other side of the bonding piece is bonded with the side, adjacent to the battery cell, of the second connecting section, the third connecting section is provided with sealant, the sealant is used for connecting the third connecting section and the shell in a sealing mode, and the soft package battery has the advantage of being good in packaging effect.

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Description

TECHNICAL FIELD

[0001] The utility model belongs to soft -walled battery technical field especially relates to soft -walled battery and have its electric equipment of using. BACKGROUND

[0002] Soft -walled battery is to utilize the soft -walled battery structure that aluminum plastic film casing is formed to the electrode core, before the electrode core is encapsulated in aluminum plastic film casing, need to bend the tab of electrode core, but the tab has certain elasticity, after bending, will sway, make the position of the sealing glue set on the tab is not fixed, and then after the electrode core is placed in aluminum plastic film casing, the sealing glue on the tab can not accurately be located in the encapsulation area of casing, lead to the encapsulation effect of soft -walled battery is poor. SUMMARY

[0003] To solve the problem of poor encapsulation effect of soft -walled battery in the related art, the utility model provides a kind of soft -walled battery, can make the sealing glue on the tab can accurately be located in the encapsulation area of casing, and then can greatly improve the encapsulation effect of soft -walled battery.

[0004] The soft -walled battery of the utility model embodiment includes:

[0005] Casing, the casing has accommodating cavity;

[0006] Electrode core, the electrode core is located in the accommodating cavity,

[0007] Positive tab, one end of the positive tab is connected with the electrode core, and the other end of the positive tab extends out of the casing;

[0008] Negative tab, one end of the negative tab is connected with the electrode core, and the other end of the negative tab extends out of the casing;

[0009] The positive tab and / or the negative tab include first connecting section, first bending section, second connecting section, second bending section and third connecting section connected in sequence;

[0010] Adhesive, one side of the adhesive is adhered with the side of the first connecting section away from the electrode core,

[0011] The other side of the adhesive is adhered with the side of the second connecting section adjacent to the electrode core,

[0012] The third connecting section is provided with sealing glue, and the sealing glue is used to seal the third connecting section and the casing.

[0013] The soft package battery has the characteristics of good packaging effect.

[0014] Therefore, the soft package battery has the characteristics of good packaging effect.

[0015] In some embodiments, the positive tab and the negative tab are arranged at the same end of the battery cell.

[0016] In some embodiments, the positive tab and the negative tab each include a plurality of foil tabs and an adapter tab, one end of the plurality of foil tabs is connected to the battery cell, and the other end of the plurality of foil tabs is connected to one end of the adapter tab.

[0017] In some embodiments, the connection between the plurality of foil tabs and the adapter tab is located at the second connection section;

[0018] The plurality of foil tabs form the first connection section, the first bending section, and a part of the second connection section connected in sequence;

[0019] The adapter tab forms another part of the second connection section, the second bending section, and the third connection section connected in sequence.

[0020] In some embodiments, the foil tab is provided with insulating adhesive tape.

[0021] In some embodiments, the plurality of foil tabs and the adapter tab are connected by welding.

[0022] In some embodiments, the adhesive is double-sided tape.

[0023] In some embodiments, the battery cell includes a positive plate, a negative plate, and a separator, the positive plate, the separator, and the negative plate are laminated and wound;

[0024] The positive tab is connected to the positive plate, and the negative tab is connected to the negative plate.

[0025] In some embodiments, the battery cell includes a positive plate, a negative plate, and a separator, the positive plate and the negative plate are staggered and laminated, and the separator is arranged between the positive plate and the negative plate;

[0026] The positive tab is connected to the positive plate, and the negative tab is connected to the negative plate.

[0027] The utility model embodiment further provides a kind of electric equipment, including the soft package battery described in above embodiment. BRIEF DESCRIPTION OF DRAWINGS

[0028] In order to more clearly illustrate the technical scheme of the utility model embodiment, the drawings needed to be used in the description of the utility model embodiment will be simply introduced as follows, and obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can be obtained according to these drawings without creative labor.

[0029] Figure 1 It is the structure schematic view of the positive lug of the soft package battery of the utility model embodiment;

[0030] Figure 2 It is the structure schematic view of the negative lug of the soft package battery of the utility model embodiment.

[0031] In the drawing:

[0032] 1, shell;101, accommodating cavity;

[0033] 2, battery cell;201, positive plate;202, negative plate;203, diaphragm;

[0034] 3, positive lug;

[0035] 4, negative lug;

[0036] 5, adhesive;

[0037] 6, first connecting section;

[0038] 7, first bending section;

[0039] 8, second connecting section;

[0040] 9, second bending section;

[0041] 10, third connecting section;

[0042] 11, sealing glue;

[0043] 12, foil lug;

[0044] 13, adapter lug;

[0045] 14, insulating adhesive paper. DETAILED DESCRIPTION

[0046] In order to make the technical problems, technical schemes and beneficial effects solved by the utility model clearer and more apparent, the utility model will be further described in detail below in combination with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the utility model and not to limit the utility model.

[0047] In the description of the utility model, 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 utility model and simplifying the description, and does not indicate or imply 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 a limitation on the utility model. In the description of the utility model, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0048] In the description of the utility model, it should be pointed out that, unless otherwise specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be internal glue injection of two elements. For ordinary skilled persons in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0049] The utility model is described below in combination with the drawings Figures 1-2 The soft package battery of the utility model embodiment is described.

[0050] As Figure 1 shown, the utility model embodiment soft package battery includes shell 1, electric core 2 and adhesive piece 5.

[0051] As Figures 1-2 shown, shell 1 has accommodating cavity 101, and electric core 2 is arranged in accommodating cavity 101, and electric core 2 has positive pole lug 3 and negative pole lug 4, one end of positive pole lug 3 is connected with electric core 2, and the other end of positive pole lug 3 extends out of shell 1, one end of negative pole lug 4 is connected with electric core 2, and the other end of negative pole lug 4 extends out of shell 1.

[0052] Positive pole lug 3 and / or negative pole lug 4 include first connecting section 6, first bending section 7, second connecting section 8, second bending section 9 and third connecting section 10 connected in sequence.

[0053] The one side of the bonding piece 5 is bonded with the side of the first connecting section 6 away from the battery cell 2, and the other side of the bonding piece 5 is bonded with the side of the second connecting section 8 adjacent to the battery cell 2, and the third connecting section 10 is provided with a sealing glue 11 for sealing the third connecting section 10 and the shell 1.

[0054] The soft package battery of the embodiment of the utility model can fix the positive and negative electrode tabs 3 and 4 after being folded, avoid the shaking of the positive and negative electrode tabs 3 and 4 after being folded, and then can make the sealing glue 11 on the positive and negative electrode tabs 3 and 4 accurately fall into the packaging area of the shell 1 after the battery cell 2 is installed in the accommodating cavity 101 of the shell 1, can avoid the problem of loose packaging, and greatly improves the packaging effect of the soft package battery.

[0055] Therefore, the soft package battery of the embodiment of the utility model has the characteristics of good packaging effect.

[0056] In some embodiments, the bonding piece 5 is double-sided adhesive tape.

[0057] It can be understood that the double-sided adhesive tape is selected as the bonding piece 5, on the one hand, the double-sided adhesive tape is convenient to obtain and has low cost, and on the other hand, the double-sided adhesive tape is convenient to paste and easy to operate.

[0058] Therefore, the soft package battery of the embodiment of the utility model can reduce the manufacturing cost and contrast of the soft package battery by setting the bonding piece 5 as double-sided adhesive tape.

[0059] In some embodiments, the positive and negative electrode tabs are provided with insulating adhesive paper 14.

[0060] The soft package battery of the embodiment of the utility model is provided with insulating adhesive paper 14 on the positive and negative electrode tabs, can wrap the positive and negative electrode tabs, and avoid the direct contact of the positive and negative electrode tabs with the aluminum plastic film.

[0061] In some embodiments, the positive and negative electrode tabs are arranged at the same end of the battery cell 2.

[0062] The soft package battery of the embodiment of the utility model is arranged at the same end of the battery cell 2, which is convenient for packaging the battery cell 2 by the aluminum plastic film.

[0063] In some embodiments, the positive and negative electrode tabs 3 and 4 each include a plurality of foil tabs 12 and an adapter tab 13, one end of the plurality of foil tabs 12 is connected with the battery cell 2, and the other end of the plurality of foil tabs 12 is connected with one end of the adapter tab 13.

[0064] Further, the plurality of foil tabs 12 and the adapter tab 13 are connected by welding.

[0065] It can be understood that the multiple foil tabs 12 can be welded together at one end away from the battery cell 2 first, and then the one end of the multiple foil tabs 12 welded together can be welded together with the adapter tab 13.

[0066] In some embodiments, the connection between the multiple foil tabs 12 and the adapter tab 13 is located at the second connection section 8.

[0067] Therefore, the multiple foil tabs 12 form the first connection section 6, the first bending section 7, and a part of the second connection section 8 connected in sequence; and the adapter tab 13 forms another part of the second connection section 8, the second bending section 9, and the third connection section 10 connected in sequence.

[0068] In some embodiments, the battery cell 2 includes a positive electrode sheet 201, a negative electrode sheet 202, and a separator 203, the positive electrode sheet 201, the separator 203, and the negative electrode sheet 202 are laminated and wound, the positive tab 3 is connected to the positive electrode sheet 201, and the negative tab 4 is connected to the negative electrode sheet 202.

[0069] In some embodiments, the battery cell 2 includes a positive electrode sheet 201, a negative electrode sheet 202, and a separator 203, the positive electrode sheet 201 and the negative electrode sheet 202 are alternately laminated, and the separator 203 is arranged between the positive electrode sheet 201 and the negative electrode sheet 202.

[0070] The positive tab 3 is connected to the positive electrode sheet 201, and the negative tab 4 is connected to the negative electrode sheet 202; it can be understood that the battery cell 2 is a laminated structure, which is a prior art and will not be described here.

[0071] The utility model further provides a kind of electric equipment, including the soft package battery described in above embodiment.

[0072] The above-described embodiments are only used to illustrate the technical solutions of the present utility model, but not to limit them; although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent substitutions for some technical features; and these modifications or substitutions do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present utility model, and should be included in the protection scope of the present utility model.

Claims

1. A pouch battery, characterized by, The application relates to a soft package battery, which comprises the following parts: a shell (1) with a containing cavity (101); an electric core (2) arranged in the containing cavity (101), a positive pole lug (3) with one end connected with the electric core (2) and the other end extending out of the shell (1), a negative pole lug (4) with one end connected with the electric core (2) and the other end extending out of the shell (1), the positive pole lug (3) and / or the negative pole lug (4) comprising a first connecting section (6), a first bending section (7), a second connecting section (8), a second bending section (9) and a third connecting section (10) connected in sequence, an adhesive member (5) with one side adhered to the side of the first connecting section (6) away from the electric core (2) and the other side adhered to the side of the second connecting section (8) adjacent to the electric core (2). The positive pole lug and the negative pole lug are arranged at the same end of the electric core (2).

2. The pouch battery of claim 1, wherein, The positive pole lug (3) and the negative pole lug (4) each comprise a plurality of foil pole lugs (12) and a switching pole lug (13), one end of the plurality of foil pole lugs (12) is connected with the electric core (2), and the other end of the plurality of foil pole lugs (12) is connected with one end of the switching pole lug (13). 3.The pouch battery of claim 1, wherein, The connection between the plurality of foil pole lugs (12) and the switching pole lug (13) is located at the second connecting section (8).

4. The pouch battery of claim 3, wherein, The plurality of foil pole lugs (12) form the first connecting section (6), the first bending section (7) and a part of the second connecting section (8) connected in sequence. The switching pole lug (13) forms another part of the second connecting section (8), the second bending section (9) and the third connecting section (10) connected in sequence. An insulating adhesive tape (14) is arranged on the foil pole lug (12). 5.The pouch battery of claim 3, wherein, The plurality of foil pole lugs (12) and the switching pole lug (13) are connected by welding. 6.The pouch battery of claim 3, wherein, The adhesive member (5) is double-sided adhesive tape. 7.The pouch battery of claim 1, wherein, The electric core (2) comprises a positive pole sheet (201), a negative pole sheet (202) and a diaphragm (203), the positive pole sheet (201), the diaphragm (203) and the negative pole sheet (202) are laminated and wound; 8.The pouch battery of claim 1, wherein, the positive pole lug (3) is connected with the positive pole sheet (201), and the negative pole lug (4) is connected with the negative pole sheet (202). The electric core (2) comprises a positive pole sheet (201), a negative pole sheet (202) and a diaphragm (203), the positive pole sheet (201) and the negative pole sheet (202) are alternately laminated, and the diaphragm (203) is arranged between the positive pole sheet (201) and the negative pole sheet (202); 9.The pouch battery of claim 1, wherein, the positive pole lug (3) is connected with the positive pole sheet (201), and the negative pole lug (4) is connected with the negative pole sheet (202). The third connecting section (10) is provided with sealing glue (11) for sealing and connecting the third connecting section (10) and the shell (1). 10.The pouch battery of claim 1, wherein, The application further relates to a soft package battery comprising the battery as claimed in any one of claims 1-10.

11. An electrical device, characterized by