CN216818419U - Full-lug laminated lithium battery - Google Patents
Full-lug laminated lithium battery Download PDFInfo
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- CN216818419U CN216818419U CN202220459440.3U CN202220459440U CN216818419U CN 216818419 U CN216818419 U CN 216818419U CN 202220459440 U CN202220459440 U CN 202220459440U CN 216818419 U CN216818419 U CN 216818419U
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- 150000002641 lithium Chemical class 0.000 title claims abstract description 18
- 238000003475 lamination Methods 0.000 claims abstract description 9
- 239000011888 foil Substances 0.000 claims description 57
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims description 11
- 229910052744 lithium Inorganic materials 0.000 claims description 11
- 238000007373 indentation Methods 0.000 claims description 5
- 230000010287 polarization Effects 0.000 abstract description 4
- 230000002349 favourable effect Effects 0.000 description 4
- 238000003466 welding Methods 0.000 description 3
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 229910001416 lithium ion Inorganic materials 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- -1 polyethylene Polymers 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- YWXYYJSYQOXTPL-SLPGGIOYSA-N isosorbide mononitrate Chemical compound [O-][N+](=O)O[C@@H]1CO[C@@H]2[C@@H](O)CO[C@@H]21 YWXYYJSYQOXTPL-SLPGGIOYSA-N 0.000 description 1
- 230000003446 memory effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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Abstract
The utility model provides a full-tab laminated lithium battery, which comprises: the positive pole lamination core comprises a positive pole current collector and a plurality of positive pole pieces, the positive pole pieces are arranged in a lamination mode at intervals, the positive pole current collector surrounds two adjacent sides of the positive pole pieces and is respectively connected with the positive pole pieces in parallel, and a positive pole lug is connected to the outer side of the positive pole current collector; the negative electrode laminated core comprises a negative electrode current collector and a plurality of negative electrode plates, the negative electrode plates and the positive electrode plates are stacked in a crossed manner, the negative electrode current collectors surround the two adjacent sides of the negative electrode plates and are arranged diagonally to the positive electrode current collector, the negative electrode current collectors are respectively connected with the negative electrode plates in parallel, and the outer sides of the negative electrode current collectors are connected with negative electrode tabs; and the diaphragm is arranged between the positive pole piece and the negative pole piece. The utility model can increase the flow guide cross-sectional areas of the positive current collector and the negative current collector, improve the electronic conductivity, reduce the internal resistance of the battery, reduce the polarization and improve the high-magnification charge and discharge performance.
Description
Technical Field
The utility model relates to the technical field of lithium ion batteries, in particular to a full-lug laminated lithium battery.
Background
The lithium ion battery has the advantages of high energy density, high working voltage, safety, environmental protection, no memory effect, long cycle life and the like, and is widely applied to the fields of digital 3C, power, energy storage, new energy automobiles and the like at present; with the increasing demand of people for quick charging, the performance of the battery under high rate is widely researched; aiming at the requirement of the battery on large multiplying power, the method can be started by improving the ionic conductivity and the electronic conductivity of the battery: the structural optimization is mainly to reduce the internal resistance of the battery and improve the rate performance of the battery.
At present, the mode of improving the high rate performance is to adopt multi-tab, full-tab winding and full-tab lamination, so that the charge and discharge performance of the battery is improved to a certain extent, and partial heat production is inhibited. The full-lug laminated type generally adopts a mode of leading lugs from two ends of a pole group; because the pole pieces have potential differences in the thickness direction, the reactions at different positions of the pole pieces are uneven, and as the length of the pole pieces is continuously lengthened, lithium precipitation can be caused during high-rate charging of the long pole pieces under the condition that the length of the pole pieces is not changed, the heat dissipation performance is poor, heat accumulation is generated, and potential safety hazards exist.
SUMMERY OF THE UTILITY MODEL
In view of the above, the utility model provides a full-tab laminated lithium battery which can realize high-rate charge and discharge, reduce heat production and enhance heat dissipation.
The technical scheme of the utility model is realized as follows:
the utility model provides a full-tab laminated lithium battery, which comprises:
the positive electrode lamination core comprises a positive electrode current collector and a plurality of positive electrode plates, the positive electrode plates are arranged at intervals in a lamination mode, the positive electrode current collector surrounds two adjacent sides of the positive electrode plates and is respectively connected with the positive electrode plates in parallel, and a positive electrode lug is connected to the outer side of the positive electrode current collector;
the negative electrode laminated core comprises a negative electrode current collector and a plurality of negative electrode plates, the negative electrode plates and the positive electrode plates are stacked in a crossed manner, the negative electrode current collectors surround the two adjacent sides of the negative electrode plates and are arranged diagonally to the positive electrode current collector, the negative electrode current collectors are respectively connected with the negative electrode plates in parallel, and the outer sides of the negative electrode current collectors are connected with negative electrode tabs;
and the diaphragm is arranged between the positive pole piece and the negative pole piece.
On the basis of the above technical scheme, preferably, the positive pole piece and the negative pole piece are both arranged in a square shape.
Further, preferably, the positive current collector comprises a first positive current collector handle and a second positive current collector handle, the first positive current collector handle and the second positive current collector handle are respectively located at two adjacent sides of the stacked positive pole pieces, and the plurality of positive pole pieces are respectively connected with the first positive current collector handle and the second positive current collector handle; the positive pole lug comprises a first positive pole lug foil and a second positive pole lug foil, the first positive pole lug foil is connected with the outer side of the first positive current collecting pole handle, the second positive pole lug foil is connected with the outer side of the second positive current collecting pole handle, and one end of the first positive pole lug foil is connected with one end of the second positive pole lug foil.
Furthermore, preferably, the negative current collector comprises a first negative current collector handle and a second negative current collector handle, the first negative current collector handle and the second negative current collector handle are respectively located at two adjacent sides of the stacked negative pole pieces and are diagonally arranged with the positive current collector, and the negative pole pieces are respectively connected with the first negative current collector handle and the second negative current collector handle; the negative electrode tab comprises a first negative electrode tab foil and a second negative electrode tab foil, the first negative electrode tab foil is connected with the outer side of the first negative current collecting pole handle, the second negative electrode tab foil is connected with the outer side of the second negative current collecting pole handle, and one end of the first negative electrode tab foil is connected with one end of the second negative electrode tab foil.
On the basis of the technical scheme, preferably, a certain distance is reserved between both sides of the positive pole piece, which are far away from the positive current collector, and the negative current collector; and a certain distance is reserved between the two sides of the negative pole piece, which are far away from the negative current collector, and the positive current collector.
Further, preferably, the lengths of the first positive collector handle and the second positive collector handle are both smaller than the length of the side of the positive pole piece connected with the first positive collector handle; the lengths of the first negative current collecting pole handle and the second negative current collecting pole handle are smaller than the side length of the negative pole piece connected with the first negative current collecting pole handle and the second negative current collecting pole handle.
Furthermore, preferably, the length of the second positive current collector handle is smaller than that of the first positive current collector handle, and a first fixing piece for fixing the positive pole piece and the negative pole piece is arranged at the joint of the first positive current collector handle and the second positive current collector handle; the length of the second negative current collecting pole handle is smaller than that of the first negative current collecting pole handle, and a second fixing piece for fixing the positive pole piece and the negative pole piece is arranged at the joint of the first negative current collecting pole handle and the second negative current collecting pole handle.
Preferably, the first positive tab foil, the second positive tab foil, the first negative tab foil and the second negative tab foil are provided with indentations.
Compared with the prior art, the utility model has the following beneficial effects:
(1) the utility model discloses a full-tab laminated lithium battery, which is characterized in that a plurality of positive plates and a plurality of negative plates are arranged in a cross-laminated manner, the adjacent two sides of each positive plate are connected with a positive current collector, the outer side of each positive current collector is connected with a positive tab, the two sides of each negative plate far away from the positive current collector are connected with negative current collectors, and the outer sides of the negative current collectors are connected with negative tabs, so that the flow guide cross-sectional areas of the positive current collector and the negative current collector are increased, the electronic conductivity is improved, the internal resistance of the battery is reduced, the polarization is reduced, and the high-rate charge-discharge performance is improved;
(2) a certain distance is arranged between the two sides of the positive pole piece, which are far away from the positive current collector, and the negative current collector; and a certain distance is arranged between both sides of the negative pole piece far away from the negative current collector and the positive current collector. This structure can make the four sides of whole lithium cell have more holes, and the heat is in time to diffusing all around when being favorable to big multiplying power charge-discharge, avoids the temperature rise too high to cause the thermal runaway, improves big multiplying power charge-discharge performance and heat dispersion.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic perspective view of a full tab laminated lithium battery disclosed in the present invention;
fig. 2 is a schematic perspective view of a positive stack and a negative stack according to the present disclosure;
fig. 3 is an exploded view of a fully tab laminated lithium battery according to the present disclosure;
fig. 4 is a schematic plane structure diagram of a full tab laminated lithium battery disclosed in the present invention;
the attached drawings are as follows:
1. stacking the positive electrodes; 2. stacking the negative electrodes; 3. a diaphragm; 11. a positive electrode plate; 12. a positive current collector; 13. a positive electrode tab; 21. a negative pole piece; 22. a negative current collector; 23. a negative electrode tab; 121. a first positive collector tang; 122. a second positive collector tang; 221. a first negative current collecting pole shank; 222. a second negative current collecting pole shank; 131. a first positive tab foil; 132. a second positive tab foil; 231. a first negative tab foil; 232. a second negative tab foil; 4. a first fixing member; 5. a second fixing member; l, indentation.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
As shown in fig. 1 and in combination with fig. 2, an embodiment of the present invention discloses a full-tab laminated lithium battery, which includes a positive electrode laminated core 1, a negative electrode laminated core 2 and a separator 3.
The positive laminated core 1 comprises a positive current collector 12 and a plurality of positive pole pieces 11, wherein the positive pole pieces 11 are stacked, the positive current collector 12 surrounds two adjacent sides of the positive pole pieces 11 and is connected with the positive pole pieces 11 in parallel, and the outer side of the positive current collector 12 is connected with a positive pole lug 13. The positive electrode current collector 12 is configured to transmit the current of the plurality of positive electrode tabs 11 to the positive electrode current collector 12 at the same time, and to output the forward current to the external electric device through the positive electrode tab 13. The positive current collector 12 is connected to two adjacent sides of the positive pole piece 11, electrons on the positive pole piece 11 can be transmitted to the positive current collector 12 through different directions, compared with a mode of outputting the tabs at one end, the tabs are output from two sides, an electron conduction path is shortened, the flow guide area of the positive pole piece 11 can be increased through the positive current collector 12, the electron conductivity is improved, the internal resistance of the battery is reduced, the polarization is reduced, and the high-magnification charge-discharge performance is improved.
The negative electrode lamination core 2 comprises a negative electrode current collector 22 and a plurality of negative electrode plates 21, wherein the negative electrode plates 21 and the positive electrode plates 11 are alternately stacked, the negative electrode current collector 22 surrounds the two adjacent sides of the negative electrode plates 21 and is arranged diagonally with the positive electrode current collector 12, the negative electrode current collector 22 is respectively connected with the negative electrode plates 21 in parallel, and the outer side of the negative electrode current collector 22 is connected with a negative electrode tab 23. The negative electrode collector 22 is used to transmit the current of the plurality of negative electrode tabs 21 to the negative electrode collector 22 at the same time, and to output a negative current to an external electric device through the negative electrode tab 23. The adjacent two sides of the negative pole piece 21 are connected with the negative pole current collector 22, electrons on the negative pole piece 21 can be transmitted to the negative pole current collector 22 through different directions, compared with a mode that the lugs are output from one end, the lugs are output from two sides, an electron conduction path is shortened, the flow guide area of the negative pole piece 21 can be increased through the negative pole current collector 22, the electronic conductivity is improved, the internal resistance of the battery is reduced, the polarization is reduced, and the high-rate charge-discharge performance is improved.
And a separator 3 disposed between the positive electrode tab 11 and the negative electrode tab 21. For establishing electrical isolation between the positive electrode plate 11 and the negative electrode plate 21, the separator 3 may be made of polyethylene or polypropylene. Diaphragm 3 adopts the bonding mode to fix between positive pole piece 11 and negative pole piece 21, also all pastes diaphragm 3 at whole lithium cell upper surface and lower surface simultaneously, and many lithium batteries carry out insulation protection, and of course, whole range upon range of formula lithium cell is accomplishing positive pole and is folding core 1 and the negative pole and fold core 2 equipment backs, can wrap up the one deck insulating film in whole lithium cell outside, comes to carry out whole insulation protection to the lithium cell.
In the present embodiment, the plurality of positive electrode tabs 11 are connected to the positive current collector 12 by welding; the plurality of negative electrode tabs 21 are connected to the negative electrode current collector 22 by welding.
In this embodiment, the positive electrode plate 11 and the negative electrode plate 21 are both square, so that the positive electrode current collector 12 is conveniently connected to two adjacent sides of the positive electrode plate 11, and the negative electrode current collector 22 is installed on two adjacent sides of the negative electrode plate 21.
In order to enable both sides of the positive pole piece 11 to transmit the positive current through the positive pole tab 13, the scheme adopted by the embodiment is as follows: referring to fig. 3, the positive electrode collector 12 includes a first positive collector handle 121 and a second positive collector handle 122, the first positive collector handle 121 and the second positive collector handle 122 are respectively located at two adjacent sides of the stacked positive electrode tabs 11, and the positive electrode tabs 11 are respectively connected to the first positive collector handle 121 and the second positive collector handle 122; the positive tab 13 includes a first positive tab foil 131 and a second positive tab foil 132, the first positive tab foil 131 is connected to an outer side of the first positive current collecting tab stem 121, the second positive tab foil 132 is connected to an outer side of the second positive current collecting tab stem 122, and one end of the first positive tab foil 131 is connected to one end of the second positive tab foil 132.
From this setting, positive electron in the positive pole piece 11 can transmit on first anodal ear paper tinsel 131 and the anodal ear paper tinsel 132 of second through first positive current collector handle 121 and the anodal ear handle 122 of second respectively, compare with the positive ear of conventional lamination one end, the adjacent both sides of positive pole piece 11 all go out the utmost point ear, the inside ionic conduction rate of battery is faster, electron conduction path can shorten, just so reduced the internal resistance of battery, the high rate discharge performance and the availability factor of battery have been improved, and first anodal ear paper tinsel 131 is with the anodal ear paper tinsel 132 of second and is connected the setting, even a anodal ear paper tinsel fracture, can not lead to capacity loss, the security performance is better, be favorable to power battery's popularization.
In order to enable both sides of the negative electrode plate 21 to transmit the forward current through the negative electrode tab 23, the scheme adopted by the embodiment is as follows: the negative current collector 22 comprises a first negative current collector handle 221 and a second negative current collector handle 222, the first negative current collector handle 221 and the second negative current collector handle 222 are respectively positioned at two adjacent sides of the negative pole pieces 21 which are stacked, and are arranged diagonally to the positive current collector 12, and the negative pole pieces 21 are respectively connected with the first negative current collector handle 221 and the second negative current collector handle 222; the negative tab 23 includes a first negative tab foil 231 and a second negative tab foil 232, the first negative tab foil 231 is connected to an outer side of the first negative current collecting tab 221, the second negative tab foil 232 is connected to an outer side of the second negative current collecting tab 222, and one end of the first negative tab foil 231 is connected to one end of the second negative tab foil 232.
From this setting, negative-going electron in the negative pole piece 21 can transmit on first negative pole ear foil 231 and second negative pole ear foil 232 through first negative current collection utmost point handle 221 and second negative current collection utmost point handle 222 respectively, compare with the utmost point ear of a conventional lamination one end, the utmost point ear is all gone out to the adjacent both sides of negative pole piece 21, the inside ionic conduction rate of battery is faster, the electron conduction route can shorten, just so reduced the internal resistance of battery, the high rate discharge performance and the availability factor of battery have been improved, and first negative pole ear foil 231 is connected the setting with second negative pole ear foil 232, even a negative pole ear foil fracture, can not lead to the capacity loss, and the security performance is better, be favorable to power battery's popularization.
In some preferred embodiments, referring to fig. 4, both sides of the positive electrode sheet 11 away from the positive current collector 12 are spaced from the negative current collector 22; both sides of the negative electrode plate 21 far away from the negative electrode current collector 22 are spaced from the positive electrode current collector 12. This structure can make the four sides of whole lithium cell have more holes, and the heat is in time to diffusing all around when being favorable to big multiplying power charge-discharge, avoids the temperature rise too high to cause the thermal runaway, improves big multiplying power charge-discharge performance and heat dispersion. In the present embodiment, it is preferable that the distance between the positive electrode tab 11 and the negative electrode collector 22 is 1mm to 5mm, and the distance between the negative electrode tab 21 and the positive electrode collector 12 is 1mm to 5 mm.
In order to guarantee that the four sides of whole lithium cell all have more holes, the heat of being convenient for can be through the transmission of four corners of lithium cell, and the scheme that this embodiment adopted is: the lengths of the first positive current collecting pole handle 121 and the second positive current collecting pole handle 122 are both smaller than the length of the side of the positive pole piece 11 connected with the first positive current collecting pole handle; the lengths of the first negative current collecting pole handle 221 and the second negative current collecting pole handle 222 are smaller than the length of the side of the negative pole piece 21 connected with the first negative current collecting pole handle. From this setting, can make first positive current collecting pole handle 121, second positive current collecting pole handle 122, first negative current collecting pole handle 221 and second negative current collecting pole handle 222 enclose into the square structure after, all there is the breach in four edges and corners, simultaneously, avoid because of first positive current collecting pole handle 121, second positive current collecting pole handle 122 cover positive pole piece 11 completely, first negative current collecting pole handle 221 and second negative current collecting pole handle 222 cover negative pole piece 21 completely, lead to the space between positive pole piece and the negative pole piece to be blocked, influence heat release.
In order to fix the stacked positive electrode sheet and the stacked negative electrode sheet, the present embodiment adopts the following scheme: the length of the second positive current collector handle 122 is smaller than that of the first positive current collector handle 121, and a first fixing piece 4 for fixing the positive pole piece 11 and the negative pole piece 21 is arranged at the joint of the first positive current collector handle 121 and the second positive current collector handle 122; the length of the second negative current collecting pole handle 222 is smaller than that of the first negative current collecting pole handle 221, and a second fixing piece 5 for fixing the positive pole piece 11 and the negative pole piece 21 is arranged at the joint of the first negative current collecting pole handle 221 and the second negative current collecting pole handle 222. With this arrangement, on the premise that the mounting positions are reserved for the first fixing member 4 and the second fixing member 5, the connection area between the first positive current collecting pole handle 121 and the positive plate and the connection area between the second positive current collecting pole handle 122 and the positive plate are larger, and the connection area between the first negative current collecting pole handle 221 and the negative plate and the connection area between the second negative current collecting pole handle 222 and the negative plate are larger.
Preferably, the first positive tab foil 131, the second positive tab foil 132, the first negative tab foil 231, and the second negative tab foil 232 are provided with indentations L. Through setting up indentation L, conveniently weld with the switching piece, guarantee that anodal utmost point ear 13 and negative pole utmost point ear 23 and switching piece welding are more firm.
The present invention is not limited to the above preferred embodiments, and any modifications, equivalent substitutions, improvements, etc. within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. A full utmost point ear lamination formula lithium cell which characterized in that includes:
the positive electrode laminated core (1) comprises a positive electrode current collector (12) and a plurality of positive electrode plates (11), wherein the positive electrode plates (11) are arranged in a laminated mode, the positive electrode current collector (12) surrounds two adjacent sides of the positive electrode plates (11) and is respectively connected with the positive electrode plates (11) in parallel, and the outer side of the positive electrode current collector (12) is connected with a positive electrode lug (13);
the negative electrode stack core (2) comprises a negative electrode current collector (22) and a plurality of negative electrode plates (21), the negative electrode plates (21) and the positive electrode plates (11) are stacked in a crossed mode, the negative electrode current collector (22) surrounds two adjacent sides of the negative electrode plates (21) and is arranged opposite to the positive electrode current collector (12), the negative electrode current collector (22) is connected with the negative electrode plates (21) in parallel respectively, and the outer side of the negative electrode current collector (22) is connected with a negative electrode lug (23);
and the diaphragm (3) is arranged between the positive pole piece (11) and the negative pole piece (21).
2. The fully-tab laminated lithium battery of claim 1 wherein: the positive pole piece (11) and the negative pole piece (21) are both arranged in a square shape.
3. The fully-tab laminated lithium battery of claim 2 wherein: the positive current collector (12) comprises a first positive current collector handle (121) and a second positive current collector handle (122), the first positive current collector handle (121) and the second positive current collector handle (122) are respectively positioned at two adjacent sides of the positive pole pieces (11) which are arranged in a stacked mode, and the positive pole pieces (11) are respectively connected with the first positive current collector handle (121) and the second positive current collector handle (122); the positive pole tab (13) comprises a first positive pole tab foil (131) and a second positive pole tab foil (132), the first positive pole tab foil (131) is connected with the outer side of the first positive current collector handle (121), the second positive pole tab foil (132) is connected with the outer side of the second positive current collector handle (122), and one end of the first positive pole tab foil (131) is connected with one end of the second positive pole tab foil (132).
4. The fully-tab laminated lithium battery of claim 3 wherein: the negative current collector (22) comprises a first negative current collecting pole handle (221) and a second negative current collecting pole handle (222), the first negative current collecting pole handle (221) and the second negative current collecting pole handle (222) are respectively located on two adjacent sides of the negative pole pieces (21) which are arranged in a stacked mode and are arranged diagonally to the positive current collector (12), and the negative pole pieces (21) are respectively connected with the first negative current collecting pole handle (221) and the second negative current collecting pole handle (222); the negative electrode tab (23) comprises a first negative electrode tab foil (231) and a second negative electrode tab foil (232), the first negative electrode tab foil (231) is connected with the outer side of the first negative current collecting pole handle (221), the second negative electrode tab foil (232) is connected with the outer side of the second negative current collecting pole handle (222), and one end of the first negative electrode tab foil (231) is connected with one end of the second negative electrode tab foil (232).
5. The fully-tab laminated lithium battery of claim 1 wherein: both sides of the positive pole piece (11) far away from the positive current collector (12) are spaced from the negative current collector (22); and a certain distance is reserved between the two sides of the negative pole piece (21) far away from the negative current collector (22) and the positive current collector (12).
6. The fully laminated lithium battery of claim 4 wherein: the lengths of the first positive current collector handle (121) and the second positive current collector handle (122) are smaller than the length of the side of the positive pole piece (11) connected with the first positive current collector handle; the lengths of the first negative current collecting pole handle (221) and the second negative current collecting pole handle (222) are smaller than the length of the side of the negative pole piece (21) connected with the first negative current collecting pole handle and the second negative current collecting pole handle.
7. The fully laminated lithium battery of claim 6 wherein: the length of the second positive current collector handle (122) is smaller than that of the first positive current collector handle (121), and a first fixing piece (4) for fixing the positive pole piece (11) and the negative pole piece (21) is arranged at the joint of the first positive current collector handle (121) and the second positive current collector handle (122); the length of the second negative current collecting pole handle (222) is smaller than that of the first negative current collecting pole handle (221), and a second fixing piece (5) for fixing the positive pole piece (11) and the negative pole piece (21) is arranged at the joint of the first negative current collecting pole handle (221) and the second negative current collecting pole handle (222).
8. The fully laminated lithium battery of claim 4 wherein: the first positive tab foil (131), the second positive tab foil (132), the first negative tab foil (231) and the second negative tab foil (232) are provided with indentations (L).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220459440.3U CN216818419U (en) | 2022-03-03 | 2022-03-03 | Full-lug laminated lithium battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220459440.3U CN216818419U (en) | 2022-03-03 | 2022-03-03 | Full-lug laminated lithium battery |
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| Publication Number | Publication Date |
|---|---|
| CN216818419U true CN216818419U (en) | 2022-06-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220459440.3U Active CN216818419U (en) | 2022-03-03 | 2022-03-03 | Full-lug laminated lithium battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216818419U (en) |
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2022
- 2022-03-03 CN CN202220459440.3U patent/CN216818419U/en active Active
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