Plug-in type soft package structure applied to battery, capacitor and super capacitor

Abstract

The utility model provides a plug-in type soft package structure applied to a battery, a capacitor and a super capacitor, the plug-in type soft package structure comprises a monomer assembly and two strings of module assemblies, the monomer assembly comprises a first aluminum plastic shell, a first battery cell and a first tab assembly, the outer wall of the first aluminum plastic shell is provided with the first tab assembly, and the first tab assembly is provided with a second aluminum plastic shell. The first tab assembly comprises a first positive tab and a first negative tab, the first aluminum-plastic shell is composed of two layers of aluminum-plastic films, a closed space is formed in the first aluminum-plastic shell by sealing the edges of the two layers of aluminum-plastic films, the first battery cell is arranged in the closed space of the first aluminum-plastic shell, the first battery cell is provided with a positive electrode and a negative electrode, and the first positive electrode and the second negative electrode are arranged in the first aluminum-plastic shell. According to the utility model, the leading-out ends of the first positive pole lug and the first negative pole lug are arranged to be columnar, so that the battery, the capacitor and the super capacitor with the soft package structure can be directly used as plug-in devices, and the advantages of the soft package structure and the plug-in devices are combined.

Description

Technical Field

[0001] The utility model relates to a battery, a capacitor and a supercapacitor pole ear, in particular to a soft-pack battery, a capacitor and a supercapacitor pole ear, and belongs to the technical field of soft-pack batteries, capacitors and supercapacitors. Background Art

[0002] Compared with hard-sealed batteries, soft-pack batteries are sealed with aluminum-plastic film, which is lighter than the metal shell used in hard-sealed batteries, and their material cost is also lower, which makes soft-pack batteries have a raw material cost advantage over hard-sealed batteries. And because soft-pack batteries use fewer parts than hard-sealed batteries, this also relatively reduces the cost of soft-pack batteries, and this also makes the energy density of soft-pack batteries higher than that of hard-sealed batteries.

[0003] At present, since the tabs of soft-pack batteries are often composed of a conductive metal sheet and tab glue, soft-pack batteries are rarely made into plug-in devices. Therefore, a plug-in soft-pack battery structure is proposed. Utility Model Content

[0004] In view of this, the utility model provides a plug-in soft package structure applied to batteries, capacitors and supercapacitors to solve or alleviate the technical problems existing in the prior art and at least provide a beneficial choice.

[0005] The technical solution of the embodiment of the utility model is implemented as follows: a plug-in soft package structure applied to batteries, capacitors and supercapacitors, including a single component and two-string module components, the single component includes a first aluminum-plastic shell, a first battery cell and a first pole ear component, the outer wall of the first aluminum-plastic shell is provided with a first pole ear component, and the first pole ear component includes a first positive pole ear and a first negative pole ear;

[0006] The first aluminum-plastic shell is composed of two layers of aluminum-plastic films, and a closed space is formed inside by sealing the edges of the two layers of aluminum-plastic films. The first battery cell is arranged in the closed space of the first aluminum-plastic shell, and the first battery cell is provided with a positive electrode and a negative electrode;

[0007] The first positive electrode tab and the first negative electrode tab each include a first lead-out end and a first welding end, the first welding end of the first positive electrode tab is sandwiched and covered by two layers of aluminum-plastic film of the first aluminum-plastic shell and connected to the first battery cell positive electrode, the first welding end of the first negative electrode tab is sandwiched and covered by two layers of aluminum-plastic film of the first aluminum-plastic shell and connected to the first battery cell negative electrode, and the first lead-out ends of the first positive electrode tab and the first negative electrode tab are both arranged in a columnar shape;

[0008] Insulating sealant is arranged between the first positive electrode tab and the first negative electrode tab and the two layers of aluminum-plastic film of the first aluminum-plastic shell.

[0009] In one embodiment, specifically, the first electrode tab assembly further includes the second positive electrode tab and the second negative electrode tab, and the second positive electrode tab and the second negative electrode tab are respectively arranged at an angle of 90 degrees.

[0010] In one embodiment, specifically, the lead-out directions of the first positive electrode tab and the first negative electrode tab are set to be led out from opposite sides.

[0011] In one embodiment, specifically, the lead-out directions of the second positive electrode tab and the second negative electrode tab are set to be led out on the same side;

[0012] The second positive electrode tab and the second negative electrode tab are led out in opposite directions.

[0013] In one embodiment, specifically, the two-string module assembly includes a second battery cell, a third battery cell, a second pole ear assembly and a second aluminum-plastic shell, and the outer wall of the second aluminum-plastic shell is provided with a second pole ear assembly;

[0014] The second electrode tab assembly includes a third positive electrode tab, a third negative electrode tab, a fourth positive electrode tab and a fourth negative electrode tab;

[0015] The second aluminum-plastic shell is composed of two layers of aluminum-plastic film, an insulating PP film is arranged between the two layers of aluminum-plastic, and two closed spaces are formed inside by sealing the edges of the two layers of aluminum-plastic film and the insulating PP film. The second battery cell and the third battery cell are respectively arranged in the two closed spaces formed by the second aluminum-plastic shell and the insulating PP film, and the second battery cell and the third battery cell are respectively provided with a positive electrode and a negative electrode.

[0016] In one embodiment, specifically, the third positive pole tab, the third negative pole tab, the fourth positive pole tab and the fourth negative pole tab all include a second lead-out terminal and a second welding terminal, and the second welding terminals of the third positive pole tab and the third negative pole tab are respectively connected to the positive electrode and the negative electrode of the second battery cell after being clamped and covered by one layer of the aluminum-plastic film and the insulating PP film of the second aluminum-plastic shell, and the second welding terminals of the fourth positive pole tab and the fourth negative pole tab are respectively connected to the positive electrode and the negative electrode of the third battery cell after being clamped and covered by another layer of the aluminum-plastic film and the insulating PP film of the second aluminum-plastic shell, and the second welding terminals of the third positive pole tab, the third negative pole tab, the fourth positive pole tab and the fourth negative pole tab are all provided with a second sealant on one side of the lead-out terminal to ensure that the two layers of the aluminum-plastic film and the insulating PP film of the second aluminum-plastic shell are welded and sealed at the pole tab position.

[0017] In one embodiment, specifically, the third positive electrode lug, the third negative electrode lug, the fourth positive electrode lug and the fourth negative electrode lug are arranged to be led out on opposite sides, the third positive electrode lug, the third negative electrode lug, the fourth positive electrode lug and the fourth negative electrode lug are arranged to be led out on the same side, and the third positive electrode lug, the third negative electrode lug, the fourth positive electrode lug and the fourth negative electrode lug are arranged to be led out on four sides.

[0018] In one embodiment, specifically, the second pole lug assembly also includes a fifth positive pole lug and a fifth negative pole lug, the second aluminum-plastic shell is provided with a fifth positive pole lug, a fifth negative pole lug and a first balancing pole lug, the second welding ends of the fifth positive pole lug, the fifth negative pole lug and the balancing pole lug are set as square sheet-shaped conductive metal, the second lead-out ends of the fifth positive pole lug, the fifth negative pole lug and the balancing pole lug are set as columnar conductive metal, and the first balancing pole lug is set in the middle of the fifth positive pole lug and the fifth negative pole lug.

[0019] In one embodiment, specifically, the second pole tab assembly also includes a sixth positive pole tab, a sixth negative pole tab and a second balancing pole tab, the second welding ends of the sixth positive pole tab, the sixth negative pole tab and the second balancing pole tab are set to square sheet-shaped conductive metal, the second lead-out ends of the sixth positive pole tab, the sixth negative pole tab and the second balancing pole tab are set to columnar conductive metal, and the sixth positive pole tab, the sixth negative pole tab and the second balancing pole tab are bent into 90 degrees.

[0020] Further preferably, the second pole tab assembly includes a seventh positive pole tab and a seventh negative pole tab, the second welding ends of the seventh positive pole tab and the seventh negative pole tab are set as square sheet-shaped conductive metal, and the second lead-out ends of the seventh positive pole tab and the seventh negative pole tab are set as columnar conductive metal.

[0021] Further preferably, the second electrode tab assembly includes an eighth positive electrode tab and an eighth negative electrode tab, and the eighth positive electrode tab and the eighth negative electrode tab are bent at 90 degrees.

[0022] Further preferably, the seventh positive electrode tab and the seventh negative electrode tab are arranged to be led out on the same side, and the seventh positive electrode tab and the seventh negative electrode tab are arranged to be led out on opposite sides.

[0023] The utility model embodiment adopts the above technical solution, which has the following advantages:

[0024] 1. In order to combine the advantages of soft-pack batteries and plug-in devices, the soft-pack batteries are made into plug-in devices and directly applied to plug-in circuit boards;

[0025] 2. In order to provide balanced lead pins for application scenarios that require balanced circuits;

[0026] 3. In order to meet the market demand, the lead pins of the two-string module battery assembly provided can be deformed and bent, the lead direction can be changed, and the number of lead pins can be double lead pins, triple lead pins, or quad lead pins.

[0027] The above summary is for the purpose of description only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments and features described above, further aspects, embodiments and features of the utility model will be readily apparent by reference to the accompanying drawings and the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, 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 creative work.

[0029] Figure 1 This is a structural diagram of the opposite side of the pole ear of the monomer assembly of the utility model;

[0030] Figure 2 This is a structure diagram of the pole ear of the utility model;

[0031] Figure 3 This is a structural diagram of the bent same-side lead-out of the pole ear of a single component of the utility model;

[0032] Figure 4 This is a structural diagram of the opposite side lead-out of the bent pole ear of a single component of the utility model;

[0033] Figure 5 This is an internal cross-sectional view of two-string module components of the utility model;

[0034] Figure 6 For this utility model Figure 5 The local enlarged structure diagram at a in the middle;

[0035] Figure 7 For this utility model Figure 5 The local enlarged structure diagram at point b in the middle;

[0036] Figure 8 This is a structural diagram of the opposite side lead-out of the four-pole ear bending of the two-string module assembly of the utility model;

[0037] Fig. 9 This is a structural diagram of the four-pole ears of the two-string module assembly of the utility model being bent on four sides;

[0038] Fig.10 This is a structural diagram of the utility model in which the four-pole ears of the two-string module assembly are bent and led out on the same side;

[0039] Fig.11 This is a structural diagram of three pole ears on the same side of two-string module components of the utility model;

[0040] Fig.12 This is a bending structure diagram of three-pole ears on the same side of two-string module components of the utility model;

[0041] Fig.13 This is a structural diagram of two pole ears on the same side of two-string module components of the utility model;

[0042] Fig.14 This is a structural diagram of two pole ears on opposite sides of two-string module components of the utility model;

[0043] Fig.15 This is a bending structure diagram of two pole ears on the same side of two-string module components of the utility model.

[0044] Reference numerals: 11, first negative electrode tab; 12, first positive electrode tab; 13, first aluminum-plastic shell; 14, first battery cell; 15, first lead-out terminal; 16, first welding terminal; 17, insulating sealant; 18, second negative electrode tab; 19, second positive electrode tab; 21, second battery cell; 22, third battery cell; 23, insulating PP film; 24, first balancing tab; 241, second balancing tab; 201, third negative electrode tab; 20 2. the third positive electrode lug; 203. the fourth positive electrode lug; 204. the fourth negative electrode lug; 205. the fifth positive electrode lug; 206. the fifth negative electrode lug; 207. the sixth positive electrode lug; 208. the sixth negative electrode lug; 209. the seventh positive electrode lug; 2010. the seventh negative electrode lug; 2011. the eighth positive electrode lug; 2012. the eighth negative electrode lug; 25. the second lead-out terminal; 26. the second welding terminal; 27. the second aluminum-plastic shell. DETAILED DESCRIPTION

[0045] In the following, only some exemplary embodiments are briefly described. As those skilled in the art will appreciate, the described embodiments may be modified in various ways without departing from the spirit or scope of the present invention. Therefore, the drawings and descriptions are considered to be exemplary and non-restrictive in nature.

[0046] The embodiments of the present utility model are described in detail below with reference to the accompanying drawings.

[0047] Example 1

[0048] like Figure 1 and Figure 2As shown, the embodiment of the utility model provides a plug-in soft package structure for batteries, capacitors and supercapacitors, including a single component and two-string module components, the single component includes a first aluminum-plastic shell 13, a first battery cell 14 and a first pole ear component, the outer wall of the first aluminum-plastic shell 13 is provided with a first pole ear component, and the first pole ear component includes a first positive pole ear 12 and a first negative pole ear 11;

[0049] The first aluminum-plastic shell 13 is composed of two layers of aluminum-plastic films, and a closed space is formed inside by sealing the edges of the two layers of aluminum-plastic films. The first battery cell 14 is arranged in the closed space of the first aluminum-plastic shell 13, and the first battery cell 14 is provided with a positive electrode and a negative electrode;

[0050] The first positive electrode tab 12 and the first negative electrode tab 11 each include a first lead-out terminal 15 and a first welding terminal 16. The first welding terminal 16 of the first positive electrode tab 12 is sandwiched and covered by two layers of aluminum-plastic film of the first aluminum-plastic shell 13 and connected to the positive electrode of the first battery cell 14. The first welding terminal 16 of the first negative electrode tab 11 is sandwiched and covered by two layers of aluminum-plastic film of the first aluminum-plastic shell 13 and connected to the negative electrode of the first battery cell 14. The first lead-out terminals 15 of the first positive electrode tab 12 and the first negative electrode tab 11 are both arranged in a columnar shape.

[0051] An insulating sealant 17 is disposed between the first positive electrode tab 12 and the first negative electrode tab 11 and the two layers of aluminum-plastic film of the first aluminum-plastic shell 13 .

[0052] In Example 1, specifically, the lead-out direction of the first positive electrode tab 12 and the first negative electrode tab 11 is set to be led out on the opposite side.

[0053] Example 2

[0054] like Figure 3 and Figure 4 As shown, a plug-in soft package structure applied to batteries, capacitors and supercapacitors, the first tab assembly also includes the second positive tab 19 and the second negative tab 18, and the second positive tab 19 and the second negative tab 18 are respectively set at an angle of 90 degrees;

[0055] In Example 2, specifically, the lead-out directions of the second positive electrode tab 19 and the second negative electrode tab 18 are set to be led out on the same side;

[0056] The second positive electrode tab 19 and the second negative electrode tab 18 are led out in opposite directions.

[0057] Example 3

[0058] like Figure 5-Figure 7As shown, a plug-in soft package structure applied to batteries, capacitors and supercapacitors, the two-string module assembly includes a second battery cell 21, a third battery cell 22, a second pole ear assembly and a second aluminum-plastic shell 27, and the outer wall of the second aluminum-plastic shell 27 is provided with a second pole ear assembly;

[0059] The second electrode tab assembly includes a third positive electrode tab 202, a third negative electrode tab 201, a fourth positive electrode tab 203 and a fourth negative electrode tab 204;

[0060] The second aluminum-plastic shell 27 is composed of two layers of aluminum-plastic film, and an insulating PP film 23 is arranged between the two layers of aluminum-plastic. Two closed spaces are formed inside by sealing the edges of the two layers of aluminum-plastic film and the insulating PP film 23. The second battery cell 21 and the third battery cell 22 are respectively arranged in the two closed spaces formed by the second aluminum-plastic shell 27 and the insulating PP film 23. The second battery cell 21 and the third battery cell 22 are respectively provided with a positive electrode and a negative electrode.

[0061] In Example 3, specifically, the third positive electrode tab 202, the third negative electrode tab 201, the fourth positive electrode tab 203 and the fourth negative electrode tab 204 all include a second lead-out terminal 25 and a second welding terminal 26, and the second welding terminal 26 of the third positive electrode tab 202 and the third negative electrode tab 201 are respectively connected to the positive electrode and the negative electrode of the second battery cell 21 after being clamped and coated by one layer of the aluminum-plastic film and the insulating PP film 23 of the second aluminum-plastic shell 27, and the fourth positive electrode tab 203 and the first positive electrode tab 204 are respectively connected to the positive electrode and the negative electrode of the second battery cell 21. The second welding ends 26 of the four negative electrode tabs 204 are respectively connected to the positive electrode and negative electrode of the third battery cell 22 after being clamped and covered by another layer of aluminum-plastic film and insulating PP film 23 of the second aluminum-plastic shell 27. The second welding ends 26 of the third positive electrode tab 202, the third negative electrode tab 201, the fourth positive electrode tab 203 and the fourth negative electrode tab 204 are all provided with sealant on the side of the lead-out end to ensure that the two layers of aluminum-plastic film and insulating PP film 23 of the second aluminum-plastic shell 27 are welded and sealed at the tab position.

[0062] Example 4

[0063] like Figure 8-Figure 10 As shown, a plug-in soft package structure applied to batteries, capacitors and supercapacitors, the third positive pole tab 202, the third negative pole tab 201, the fourth positive pole tab 203 and the fourth negative pole tab 204 are arranged to be led out on opposite sides, the third positive pole tab 202, the third negative pole tab 201, the fourth positive pole tab 203 and the fourth negative pole tab 204 are arranged to be led out on the same side, and the third positive pole tab 202, the third negative pole tab 201, the fourth positive pole tab 203 and the fourth negative pole tab 204 are arranged to be led out on four sides.

[0064] Example 5

[0065] like Fig.11 As shown, a plug-in soft package structure applied to batteries, capacitors and supercapacitors, the second pole ear assembly also includes a fifth positive pole ear 205 and a fifth negative pole ear 206, the second aluminum-plastic shell 27 is provided with a fifth positive pole ear 205, a fifth negative pole ear 206 and a first balancing pole ear 24, the fifth positive pole ear 205, the fifth negative pole ear 206 and the second welding end 26 of the balancing pole ear are set as square sheet-shaped conductive metal, the fifth positive pole ear 205, the fifth negative pole ear 206 and the second lead-out end 25 of the first balancing pole ear 24 are set as columnar conductive metal, and the first balancing pole ear 24 is set in the middle of the fifth positive pole ear 205 and the fifth negative pole ear 206.

[0066] Example 6

[0067] like Fig.12 As shown, a plug-in soft package structure for batteries, capacitors and supercapacitors, the second pole tab assembly also includes a sixth positive pole tab 207, a sixth negative pole tab 208 and a second balancing pole tab 241, the second welding end 26 of the sixth positive pole tab 207, the sixth negative pole tab 208 and the second balancing pole tab 241 is set to a square sheet of conductive metal, the second lead-out end 25 of the sixth positive pole tab 207, the sixth negative pole tab 208 and the second balancing pole tab 241 is set to a columnar conductive metal, and the sixth positive pole tab 207, the sixth negative pole tab 208 and the second balancing pole tab 241 are bent into 90 degrees.

[0068] Example 7

[0069] like Fig.13 As shown, a plug-in soft package structure applied to batteries, capacitors and supercapacitors, the second pole tab assembly includes a seventh positive pole tab 209 and a seventh negative pole tab 2010, the second welding end 26 of the seventh positive pole tab 209 and the seventh negative pole tab 2010 is set to a square sheet of conductive metal, and the second lead-out end 25 of the seventh positive pole tab 209 and the seventh negative pole tab 2010 is set to a columnar conductive metal.

[0070] In Example 7, specifically, the seventh positive electrode tab 209 and the seventh negative electrode tab 2010 are configured to be led out on the same side, and the seventh positive electrode tab 209 and the seventh negative electrode tab 2010 are configured to be led out on the opposite side.

[0071] Example 8

[0072] like Fig.15 As shown, a plug-in soft package structure applied to batteries, capacitors and supercapacitors, the second pole tab assembly includes an eighth positive pole tab 2011 and an eighth negative pole tab 2012, and the eighth positive pole tab 2011 and the eighth negative pole tab 2012 are bent into 90 degrees.

[0073] When the utility model is in operation, the metal parts of the positive and negative pole ears are composed of the positive and negative pole ear welding ends and the positive and negative pole ear lead-out ends. The metal parts of the positive and negative pole ears can be formed by extrusion molding or welding. After the metal parts of the positive and negative pole ears are formed, the positive and negative pole ear welding ends are covered with the finished pole ears by hot-melting two pieces of insulating PP glue. The manufacturing process of the first battery cell 14 and the second battery cell 21 includes but is not limited to winding, lamination and other processes. The rolled pole pieces are punched into single pole pieces of specific sizes by a specific mold, and these single pole pieces of specific sizes are stacked and rolled into the first battery cell 14 and the second battery cell 21 by Z-shaped lamination, and the first battery cell 14 and the second battery cell 21 are led out on the same side. The positive and negative welding pole ear metal areas are compacted and stacked with the positive and negative integrated pole ears. The pole ears are straightened by ultrasonic or laser compression welding to facilitate loading into the first aluminum-plastic shell 13 and the second aluminum-plastic shell 27. The battery is a first battery cell 14 and a second battery cell 21 with welded pole ears are loaded into the sealing area of ​​the first aluminum-plastic shell 13 and the Durr aluminum-plastic shell. After folding, the upper and lower punching areas overlap and wrap the first battery cell 14 and the second battery cell 21. After sealing with a heat sealer, the excess aluminum-plastic film is trimmed to obtain the corresponding battery. The positive and negative pole ears of the two strings of module battery assemblies provided can be deformed and bent, and the lead-out direction can be changed. The number of pole ears can be bipolar ears, tripolar ears, and quadrupole ears. For example, the quadrupole ears of two strings of module assemblies are bent and led out on the opposite side ( Figure 8 ), the structure diagram of the four-pole ear bending and four-side lead-out of two-string module assembly ( Fig. 9 ), the structure diagram of the two-string module assembly with four-pole ears bent on the same side ( Fig.10 ), three-pole ear on the same side ( Fig.11 ), the same side of the two polar ears ( Fig.13 ) The first balancing tab 24 is prepared for application scenarios that require a balanced circuit. The first balancing tab 24 is connected to the first battery cell 14 and the common end of the first battery cell 14 connected in series.

[0074] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of various changes or substitutions within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A plug-in soft package structure for batteries, capacitors and supercapacitors, comprising a single component and two-string module components, characterized in that: The single-body assembly comprises a first aluminum-plastic shell (13), a first battery cell (14) and a first pole lug assembly; the outer wall of the first aluminum-plastic shell (13) is provided with the first pole lug assembly; the first pole lug assembly comprises a first positive pole lug (12) and a first negative pole lug (11); The first aluminum-plastic shell (13) is composed of two layers of aluminum-plastic films, and a closed space is formed inside by sealing the edges of the two layers of aluminum-plastic films. The first battery cell (14) is arranged in the closed space of the first aluminum-plastic shell (13), and the first battery cell (14) is provided with a positive electrode and a negative electrode; The first positive electrode tab (12) and the first negative electrode tab (11) both comprise a first lead-out terminal (15) and a first welding terminal (16); the first welding terminal (16) of the first positive electrode tab (12) is connected to the positive electrode of the first battery cell (14) after being clamped and covered by two layers of aluminum-plastic film of the first aluminum-plastic shell (13); the first welding terminal (16) of the first negative electrode tab (11) is connected to the negative electrode of the first battery cell (14) after being clamped and covered by two layers of aluminum-plastic film of the first aluminum-plastic shell (13); the first lead-out terminals (15) of the first positive electrode tab (12) and the first negative electrode tab (11) are both arranged in a columnar shape; Insulating sealant (17) is provided between the first positive electrode tab (12) and the first negative electrode tab (11) and the two layers of aluminum-plastic film of the aluminum-plastic shell.

2. The plug-in soft package structure for batteries, capacitors and supercapacitors according to claim 1, characterized in that: The first electrode tab assembly further comprises a second positive electrode tab (19) and a second negative electrode tab (18), wherein the second positive electrode tab (19) and the second negative electrode tab (18) are respectively arranged at an angle of 90 degrees.

3. The plug-in soft package structure for batteries, capacitors and supercapacitors according to claim 1, characterized in that: The lead-out directions of the first positive electrode tab (12) and the first negative electrode tab (11) are arranged to be led out from opposite sides.

4. The plug-in soft package structure for batteries, capacitors and supercapacitors according to claim 2, characterized in that: The second positive electrode tab (19) and the second negative electrode tab (18) are arranged to be led out from the same side; The lead-out directions of the second positive electrode tab (19) and the second negative electrode tab (18) are arranged to be led out from opposite sides.

5. The plug-in soft package structure for batteries, capacitors and supercapacitors according to claim 1, characterized in that: The two-string module assembly comprises a second battery cell (21), a third battery cell (22), a second pole lug assembly and a second aluminum-plastic shell (27), wherein the outer wall of the second aluminum-plastic shell (27) is provided with a second pole lug assembly; The second electrode tab assembly comprises a third positive electrode tab (202), a third negative electrode tab (201), a fourth positive electrode tab (203) and a fourth negative electrode tab (204); The second aluminum-plastic shell (27) is composed of two layers of aluminum-plastic film, an insulating PP film (23) is arranged between the two layers of aluminum-plastic film, and two closed spaces are formed inside by sealing the edges of the two layers of aluminum-plastic film and the insulating PP film (23). The second battery cell (21) and the third battery cell (22) are respectively arranged in the two closed spaces formed by the second aluminum-plastic shell (27) and the insulating PP film (23), and the second battery cell (21) and the third battery cell (22) are respectively provided with a positive electrode and a negative electrode.

6. The plug-in soft package structure for batteries, capacitors and supercapacitors according to claim 5, characterized in that: The third positive electrode tab (202), the third negative electrode tab (201), the fourth positive electrode tab (203) and the fourth negative electrode tab (204) all comprise a second lead-out terminal (25) and a second welding terminal (26); the second welding terminals (26) of the third positive electrode tab (202) and the third negative electrode tab (201) are respectively connected to the positive electrode and the negative electrode of the second battery cell (21) after being clamped and coated by one layer of the aluminum-plastic film and the insulating PP film (23) of the second aluminum-plastic shell (27); the fourth positive electrode tab (203) and the fourth negative electrode tab (204) are respectively connected to the positive electrode and the negative electrode of the second battery cell (21); The second welding end (26) of the ear (204) is respectively connected to the positive electrode and the negative electrode of the third battery cell (22) after being clamped and covered by another layer of aluminum-plastic film and the insulating PP film (23) of the second aluminum-plastic shell (27); and sealant is provided on the second welding end (26) of the third positive electrode ear (202), the third negative electrode ear (201), the fourth positive electrode ear (203) and the fourth negative electrode ear (204) at one side of the lead-out end to ensure that the two layers of aluminum-plastic film and the insulating PP film (23) of the second aluminum-plastic shell (27) are welded and sealed at the ear position.

7. The plug-in soft package structure for batteries, capacitors and supercapacitors according to claim 5, characterized in that: The third positive electrode tab (202), the third negative electrode tab (201), the fourth positive electrode tab (203) and the fourth negative electrode tab (204) are arranged to be led out on opposite sides; the third positive electrode tab (202), the third negative electrode tab (201), the fourth positive electrode tab (203) and the fourth negative electrode tab (204) are arranged to be led out on the same side; and the third positive electrode tab (202), the third negative electrode tab (201), the fourth positive electrode tab (203) and the fourth negative electrode tab (204) are arranged to be led out on four sides.

8. The plug-in soft package structure for batteries, capacitors and supercapacitors according to claim 5, characterized in that: The second pole lug assembly further comprises a fifth positive pole lug (205) and a fifth negative pole lug (206); the second aluminum-plastic shell (27) is provided with a fifth positive pole lug (205), a fifth negative pole lug (206) and a first balancing pole lug (24); the second welding ends (26) of the fifth positive pole lug (205), the fifth negative pole lug (206) and the balancing pole lug are provided as square sheet-shaped conductive metals; the second lead-out ends (25) of the fifth positive pole lug (205), the fifth negative pole lug (206) and the balancing pole lug are provided as columnar conductive metals; and the first balancing pole lug (24) is provided between the fifth positive pole lug (205) and the fifth negative pole lug (206).

9. The plug-in soft package structure for batteries, capacitors and supercapacitors according to claim 5, characterized in that: The second electrode tab assembly further comprises a sixth positive electrode tab (207), a sixth negative electrode tab (208) and a second balancing electrode tab (241); the second welding ends (26) of the sixth positive electrode tab (207), the sixth negative electrode tab (208) and the second balancing electrode tab (241) are configured as square sheet-shaped conductive metals; the second lead-out ends (25) of the sixth positive electrode tab (207), the sixth negative electrode tab (208) and the second balancing electrode tab (241) are configured as columnar conductive metals; and the sixth positive electrode tab (207), the sixth negative electrode tab (208) and the second balancing electrode tab (241) are bent at 90 degrees.

10. The plug-in soft package structure for batteries, capacitors and supercapacitors according to claim 5, characterized in that: The second pole tab assembly comprises a seventh positive pole tab (209) and a seventh negative pole tab (2010), wherein the second welding ends (26) of the seventh positive pole tab (209) and the seventh negative pole tab (2010) are configured as square sheet-shaped conductive metal, and the second lead-out ends (25) of the seventh positive pole tab (209) and the seventh negative pole tab (2010) are configured as columnar conductive metal.

11. The plug-in soft package structure for batteries, capacitors and supercapacitors according to claim 5, characterized in that: The second electrode tab assembly comprises an eighth positive electrode tab (2011) and an eighth negative electrode tab (2012), wherein the eighth positive electrode tab (2011) and the eighth negative electrode tab (2012) are bent at 90 degrees.

12. The plug-in soft package structure for batteries, capacitors and supercapacitors according to claim 10, characterized in that: The seventh positive electrode tab (209) and the seventh negative electrode tab (2010) are arranged to be led out on the same side, and the seventh positive electrode tab (209) and the seventh negative electrode tab (2010) are arranged to be led out on opposite sides.

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