CN218004909U - Pole core and battery - Google Patents
Pole core and battery Download PDFInfo
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- CN218004909U CN218004909U CN202221100058.XU CN202221100058U CN218004909U CN 218004909 U CN218004909 U CN 218004909U CN 202221100058 U CN202221100058 U CN 202221100058U CN 218004909 U CN218004909 U CN 218004909U
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Abstract
The utility model discloses a utmost point core and battery, the utmost point core includes: the positive plate comprises a plurality of circles of positive winding parts and a plurality of radially laminated positive lugs, the positive lugs are arranged on the plurality of circles of positive winding parts, at least one circle of positive winding parts are arranged between two radially adjacent positive lugs at intervals, and/or the negative plate is arranged at intervals with the positive lugs and comprises a plurality of circles of negative winding parts and a plurality of radially laminated negative lugs, the negative lugs are arranged on the plurality of circles of negative winding parts, and at least one circle of negative winding parts are arranged between two radially adjacent negative lugs at intervals; wherein the radial direction is perpendicular to the axis. From this, through making the at least anodal winding part of interval between two radial adjacent anodal ears, make the at least negative pole winding part of interval between two radial adjacent negative pole ears, not only can reduce the impedance of utmost point core, improve utmost point core output, can make things convenient for between a plurality of anodal ears moreover to and the welding between a plurality of negative pole ears reduces the welding degree of difficulty.
Description
Technical Field
The utility model belongs to the technical field of the battery technique and specifically relates to a utmost point core and battery are related to.
Background
With the development of battery technology, cylindrical batteries are widely used due to their characteristics of uniform standard, large energy density, good cycle performance, portability and the like. The cylindrical battery is provided with a lug, and the lug can lead current out from the positive electrode and the negative electrode, so that the normal work of the battery is ensured.
In the related technology, the connection between the tab and the pole piece is realized by spot welding one positive tab on the positive pole piece and two negative tabs on the negative pole piece during winding, and the tab is embedded in the winding core, so that the welding mode can cause the problems of low concentricity of the winding core, low capacity of the battery, low charging and discharging efficiency and safety of the battery and the like.
SUMMERY OF THE UTILITY MODEL
The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, an object of the present invention is to provide a pole piece, which has low impedance and low welding difficulty.
The utility model discloses a battery is further proposed.
According to the utility model discloses a pole piece, include: the positive plate comprises a plurality of circles of positive winding parts and a plurality of radially laminated positive lugs, the positive lugs are arranged on the plurality of circles of positive winding parts, at least one circle of positive winding parts are arranged between two radially adjacent positive lugs at intervals, and/or the negative lugs are arranged at intervals with the positive plates and comprise a plurality of circles of negative winding parts and a plurality of radially laminated negative lugs, the negative lugs are arranged on the plurality of circles of negative winding parts, and at least one circle of negative winding parts are arranged between two radially adjacent negative lugs at intervals; wherein the radial direction is perpendicular to the axis.
From this, through making the at least anodal winding part of interval between two radial adjacent anodal ears, make the at least negative pole winding part of interval between two radial adjacent negative pole ears, not only can reduce the impedance of utmost point core, improve utmost point core output, can make things convenient for between a plurality of anodal ears moreover to and the welding between a plurality of negative pole ears reduces the welding degree of difficulty.
In some examples of the present invention, two radially adjacent positive lugs are spaced by M1 circles the positive winding portion, M1, satisfies the following relation: m1 is more than or equal to 1 and less than or equal to 5; and/or the interval between two radially adjacent negative electrode lugs is M2 circles of the negative electrode winding part, wherein M2 satisfies the relation: m2 is more than or equal to 1 and less than or equal to 5.
In some examples of the present invention, the plurality of positive electrode tabs are each of a rectangular structure, and the width of the plurality of positive electrode tabs increases in a direction extending from the radially inner side to the radially outer side, and the length direction of the positive electrode tabs is a direction parallel to the axis; and/or a plurality of negative pole ears are all rectangular structures, and in the direction that radially inboard extends to the outside, a plurality of width of negative pole ear presents the increasing trend, the length direction of negative pole ear be with the direction that the axis is parallel.
In some examples of the present invention, the width of the positive tab is W1, the width of the negative tab is W2, and the value ranges of W1 and W2 are: w1 is more than or equal to 3mm and less than or equal to 6mm, W2 is more than or equal to 3mm and less than or equal to 6mm.
In some examples of the present invention, along the radial direction, the lengths of the plurality of positive electrode tabs gradually decrease from the two ends to the middle; and/or the lengths of the negative electrode ears are gradually reduced from two ends to the middle along the radial direction.
In some examples of the present invention, in the direction extending from the radially inner side to the outer side, the radially innermost positive tab is disposed on the N1 th turn of the positive winding portion, and N1 satisfies the relationship: n1 is more than or equal to 2 and less than or equal to 9; and/or in the direction that the radial inner side extends to the outer side, the negative electrode tab positioned at the radial innermost side is arranged on the N2 th circle of the negative electrode winding part, and N2 satisfies the relational expression: n2 is more than or equal to 2 and less than or equal to 9.
In some examples of the present invention, the number of the plurality of positive electrode tabs is L1, and L1 satisfies the relation 8 ≦ L1 ≦ 18; and/or the number of the negative electrode lugs is L2, and L2 satisfies the relation 8-L2-18.
In some examples of the present invention, the plurality of positive electrode tabs are integrally formed on the positive electrode sheet and welded together, and a positive electrode connecting member is welded and fixed to one side of the plurality of positive electrode tabs welded together; and/or the plurality of negative electrode lugs are integrally formed on the negative electrode sheet and welded together, and negative electrode connecting pieces are welded and fixed on two sides of the plurality of welded negative electrode lugs.
According to the utility model discloses a battery, include: a housing; and the pole piece is arranged in the shell.
In some examples of the present invention, the top of the housing is provided with a cap, the two ends of the pole core are respectively welded and fixed with a positive connecting piece and a negative connecting piece, the positive connecting piece is welded and fixed with the cap, and the negative connecting piece is welded and fixed with the bottom of the housing.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a partial schematic view of a pole piece according to an embodiment of the present invention;
fig. 2 is a partial schematic view of a pole piece according to an embodiment of the present invention;
fig. 3 is a partial schematic view of a pole piece according to an embodiment of the present invention;
fig. 4 is a schematic view of a positive plate according to an embodiment of the present invention;
fig. 5 is a schematic view of a negative electrode sheet according to an embodiment of the present invention.
Reference numerals:
100. a pole piece;
10. a positive plate; 11. a positive tab; 12. a positive electrode winding section;
20. a negative plate; 21. a negative tab; 22. a negative electrode winding section;
30. a positive electrode connecting member; 40. and a negative electrode connecting piece.
Detailed Description
Embodiments of the present invention are described in detail below, and the embodiments described with reference to the drawings are exemplary.
A pole piece 100 according to an embodiment of the present invention will be described below with reference to fig. 1 to 5, and the pole piece 100 may be applied to a battery.
As shown in fig. 1 to 5, the pole piece 100 according to the present invention may mainly include: a positive electrode tab 10 and a negative electrode tab 20. Wherein, the pole piece 100 is the winding structure of coiling along the axis, positive plate 10 sets up with negative pole piece 20 interval, positive plate 10 can mainly include many circles of positive pole winding parts 12 and a plurality of radial range upon range of positive tab 11, a plurality of positive tab 11 set up on many circles of positive winding parts 12, and interval at least one circle of positive winding part 12 between two radial adjacent positive tab 11, negative pole piece 20 can mainly include many circles of negative pole winding parts 22 and a plurality of radial range upon range of negative tab 21, a plurality of negative tab 21 set up on many circles of negative pole winding parts 22, and interval at least one circle of negative pole winding part 22 between two radial adjacent negative tab 21, radial perpendicular to axis.
Specifically, the positive plate 10 and the negative plate 20 are arranged at an interval, the positive plate 10 and the negative plate 20 are arranged along an axis in a winding manner, a direction perpendicular to the axis is defined as a radial direction, the plurality of positive tabs 11 are stacked in the radial direction, the plurality of negative tabs 21 are stacked in the radial direction, the plurality of radially stacked positive tabs 11 on the positive plate 10 are welded together, and the plurality of radially stacked negative tabs 21 on the negative plate 20 are welded together, so that on the premise that the positive tabs 11 and the negative tabs 21 draw out current to ensure normal operation of the pole core 100, the plurality of radially stacked positive tabs 11 on the positive plate 10 and the plurality of radially stacked negative tabs 21 on the negative plate 20 can increase a current channel, reduce impedance of the pole core 100, and effectively prolong the service life of the pole core 100.
Further, by arranging the plurality of positive electrode tabs 11 on the plurality of circles of positive electrode winding portions 12, and spacing at least one circle of positive electrode winding portions 12 between two radially adjacent positive electrode tabs 11, arranging the plurality of negative electrode tabs 21 on the plurality of circles of negative electrode winding portions 22, and spacing at least one circle of negative electrode winding portions 22 between two radially adjacent negative electrode tabs 21, intermittent distribution of the plurality of positive electrode tabs 11 on the plurality of circles of positive electrode winding portions 12 and intermittent distribution of the plurality of negative electrode tabs 21 on the plurality of circles of negative electrode winding portions 22 can be realized, so that the positive electrode tabs 11 and the negative electrode tabs 21 are ensured to have a certain number, and on the premise of ensuring the performance improvement of the electrode core 100, the number of the positive electrode tabs 11 and the negative electrode tabs 21 is prevented from being too large, the welding difficulty is increased, and the mass production of the electrode core 100 is not facilitated.
From this, through making the interval of two radial adjacent anodal ears 11 between at least one round anodal winding portion 12, make the interval of two radial adjacent negative pole ears 21 between at least one round negative pole winding portion 22, not only can reduce the impedance of utmost point core 100, improve utmost point core 100 output, can make things convenient for moreover between a plurality of anodal ears 11 to and the welding between a plurality of negative pole ears 21, reduce the welding degree of difficulty.
As shown in fig. 2 and 3, the interval M1 between two radially adjacent positive electrode tabs 11 is M1 times, and the positive winding portion 12 and the M1 satisfy the following relation: m1 is more than or equal to 1 and less than or equal to 5, M2 circles of negative electrode winding parts 22 are arranged between two radially adjacent negative electrode lugs 21, and M2 satisfies the relation: m2 is more than or equal to 1 and less than or equal to 5. Specifically, the number of turns of the positive winding part 12 at the interval between two radially adjacent positive electrode tabs 11 and the number of turns of the negative winding part 22 at the interval between two radially adjacent negative electrode tabs 21 are all set within a reasonable range, so that the distribution distance and the distribution quantity of the positive electrode tabs 11 on the positive electrode plate 10 can be adjusted, the distribution distance and the distribution quantity of the negative electrode tabs 21 on the positive electrode plate 10 are further optimized, not only can the positive electrode tabs 11 and the negative electrode tabs 21 be ensured to have certain quantity, the performance of the pole core 100 is improved, but also the number of the positive electrode tabs 11 and the negative electrode tabs 21 can be further prevented from being too large, a plurality of positive electrode tabs 11 are welded together, the difficulty in welding a plurality of negative electrode tabs 21 together is reduced, and the batch production of the pole core 100 is facilitated.
As shown in fig. 4 and 5, each of the plurality of positive electrode tabs 11 has a rectangular configuration, and the width of each of the plurality of positive electrode tabs 11 increases in a direction extending radially inward and outward, and the longitudinal direction of each of the positive electrode tabs 11 is a direction parallel to the axis, and each of the plurality of negative electrode tabs 21 has a rectangular configuration, and the width of each of the plurality of negative electrode tabs 21 increases in a direction extending radially inward and outward, and the longitudinal direction of each of the negative electrode tabs 21 is a direction parallel to the axis.
Specifically, in the manufacturing process of the pole piece 100, it is necessary to weld a plurality of positive electrode tabs 11 together, and a plurality of negative electrode tabs 21 together, and by setting the plurality of positive electrode tabs 11 and the plurality of negative electrode tabs 21 to be rectangular structures, the length direction of the positive electrode tabs 11 and the length direction of the negative electrode tabs 21 are both directions parallel to the axis, so that the structures of the positive electrode tabs 11 and the negative electrode tabs 21 are simple, which facilitates the production and manufacturing of the positive electrode tabs 11 and the negative electrode tabs 21, and can increase the welding area, facilitate the welding of the plurality of positive electrode tabs 11, and facilitate the welding of the plurality of negative electrode tabs 21.
Furthermore, in the direction in which the radial inner side extends outward, the widths of the plurality of positive electrode tabs 11 and the plurality of negative electrode tabs 21 are increased, so that not only can the widths of the positive electrode tabs 11 and the negative electrode tabs 21 respectively match with the curvatures of the corresponding positive electrode winding part 12 and the corresponding negative electrode winding part 22, but also the widths of the positive electrode tabs 11 and the negative electrode tabs 21 on the radial inner side are prevented from being too large, the bending degrees of the positive electrode tabs 11 and the negative electrode tabs 21 are too large, the welding difficulty is increased, and the welding stability is reduced, and the projections of the positive electrode tabs 11 on the radial outermost side can be overlapped, the projections of the negative electrode tabs 21 on the radial inner side can be overlapped, so that the positive electrode tabs 11 can be conveniently welded, the negative electrode tabs 21 on the radial inner side can be conveniently welded, the welding difficulty is reduced, and the welding stability is ensured.
Further, as shown in fig. 4 and 5, the width of positive tab 11 is W1, the width of negative tab 21 is W2, and the ranges of W1 and W2 are: w1 is more than or equal to 3mm and less than or equal to 6mm, W2 is more than or equal to 3mm and less than or equal to 6mm. Specifically, the width of the positive tab 11 and the width of the negative tab 21 are both set within a reasonable range, so that the widths of the positive tab 11 and the negative tab 21 can be further optimized, which can prevent the widths of the positive tab 11 and the negative tab 21 from being too small, resulting in a high difficulty in welding between the positive tabs 11 and the negative tabs 21, and a low stability in welding, and can prevent the widths of the positive tab 11 and the negative tab 21 from being too large, resulting in an excessively large size of the pole piece 100, thereby further reducing the sizes between the positive tabs 11 and the negative tabs 21, further ensuring the sizes between the positive tabs 11 and the negative tabs 21, and reducing the sizes of the pole piece 100.
Optionally, the following rules are defined for designing the width of the positive tab 11: the width of the first positive tab 11 is W in the direction extending radially inward and outward 0 The last positive tab 11 has a width W i When the total number of positive tab 11 is L, the width of the nth positive tab 11 is W n ＝W 0 +(n-1)*(W i -W 0 ) /(L-1). Similarly, the width of the negative electrode tab 21 may be designed according to the above-described rule. It should be noted that the width design of the plurality of positive electrode tabs 11 and the width design of the plurality of negative electrode tabs 21 may include the above rule, but are not limited thereto.
As shown in fig. 2 to 5, the length of the plurality of positive electrode tabs 11 is gradually reduced from both ends to the middle in the radial direction, and the length of the plurality of negative electrode tabs 21 is gradually reduced from both ends to the middle in the radial direction. Specifically, in the manufacturing process of the pole core 100, the plurality of positive electrode tabs 11 need to be welded together, and the plurality of negative electrode tabs 21 need to be welded together to facilitate the subsequent welding operation, by gradually decreasing the lengths of the plurality of positive electrode tabs 11 along the radial direction from the two ends to the middle, and gradually decreasing the lengths of the plurality of negative electrode tabs 21 along the radial direction from the two ends to the middle, when the plurality of positive electrode tabs 11 and the plurality of negative electrode tabs 21 are respectively welded, the positive electrode tabs 11 at the two ends can be close to the position located in the middle, the positive electrode tabs 11 at the two ends can be in contact with the positive electrode tabs 11 in the middle, and the negative electrode tabs 21 at the two ends can be close to the position located in the middle, and the negative electrode tabs 21 at the two ends can be in contact with the negative electrode tabs 21 in the middle, so that the plurality of positive electrode tabs 11 can be welded together, the plurality of negative electrode tabs 21 can be welded together, the welding difficulty can be reduced, and the welding reliability can be improved.
As shown in fig. 2 to 5, the positive electrode tab 11 located at the innermost position in the radial direction is provided on the positive electrode winding portion 12 of the N1 th turn in the direction extending from the radially inner side to the radially outer side, and N1 satisfies the relationship: n1 is more than or equal to 2 and less than or equal to 9, the negative electrode tab 21 positioned on the innermost side in the radial direction is arranged on the negative electrode winding part 22 of the Nth 2 circle in the direction extending from the inner side to the outer side in the radial direction, and N2 satisfies the relational expression: n2 is more than or equal to 2 and less than or equal to 9. Specifically, the number of turns of the positive electrode winding portion 12 and the number of turns of the negative electrode tab 21 are set in the housing, and in the direction in which the positive electrode winding portion 12 extends radially inward and outward, the number of turns of the positive electrode winding portion 12 corresponding to the number of turns is gradually increased, the number of turns of the negative electrode winding portion 22 corresponding to the number of turns is gradually increased, and the number of turns of the negative electrode winding portion 22 corresponding to the number of turns is gradually decreased, and by controlling the number of turns of the positive electrode winding portion 12 in which the radially innermost positive electrode tab 11 is set and the number of turns of the negative electrode winding portion 22 in which the radially innermost negative electrode tab 21 is set within a reasonable range, the number of turns of the positive electrode winding portion 12 in which the radially innermost positive electrode tab 11 is set can be prevented, the number of turns of the positive electrode winding portion 12 in which the radially innermost tab is set is too small, the number of turns of the negative electrode winding portion 22 in which the radially innermost negative electrode tab 21 is set is too small, and the curvature of the negative electrode winding portion 22 in which the radially innermost tab 21 is set can be prevented, the positive electrode tab 11 and the positive electrode tab 21 and the number of turns is too small, the positive electrode tab 21 and the negative electrode tab 21 is set.
Furthermore, the number of the plurality of positive electrode tabs 11 is L1, L1 satisfies the relation 8 ≤ L1 ≤ 18, the number of the plurality of negative electrode tabs 21 is L2, and L2 satisfies the relation 8 ≤ L2 ≤ 18. Specifically, the number of the positive electrode tabs 11 and the number of the negative electrode tabs 21 are set within a reasonable range, so that the positive electrode tabs 11 and the negative electrode tabs 21 are guaranteed to have a certain number, the increase of a current channel of the pole piece 100 is guaranteed, the impedance of the pole piece 100 is reduced, the excessive number of the positive electrode tabs 11 and the negative electrode tabs 21 can be prevented, and the occupied space of the positive electrode tabs 11 and the negative electrode tabs 21 is large.
According to some embodiments of the utility model, combine fig. 4 and 5 to show, a plurality of anodal ears 11 integrated into one piece are on anodal piece 10 to a plurality of anodal ears 11 welding together, and one side welded fastening of a plurality of anodal ears 11 that the welding is together has anodal connecting piece 30, and negative pole ear 21 integrated into one piece is on negative pole piece 20, and a plurality of negative pole ears 21 welding together, and the both sides welded fastening of a plurality of negative pole ears 21 that the welding is together has negative pole connecting piece 40.
Specifically, in the manufacturing process of the pole core 100, a plurality of positive electrode tabs 11 and a plurality of negative electrode tabs 21 are formed on the positive electrode plate 10 and the negative electrode plate 20 respectively by leaving a blank on the edge of the current collector without coating a positive electrode or a negative electrode material, and then by using a laser cutting technology, the positive electrode tabs 11 can be integrally formed on the positive electrode plate 10, and the negative electrode tabs 21 can be integrally formed on the negative electrode plate 20, so that the situation that the positive electrode tabs 11 are welded on the positive electrode plate 10 and the negative electrode tabs 21 are welded on the negative electrode plate 20 in a welding manner can be avoided, and not only can the arrangement of the positive electrode tabs 11 on the positive electrode plate 10 and the arrangement of the negative electrode tabs 21 on the negative electrode plate 20 be simpler and more efficient, but also when the positive electrode plate 10 and the negative electrode plate 20 are wound, the concentricity of the multiple circles of positive winding part 12 and the multiple circles of negative winding part 22 can be improved, and the charge and discharge performance of the pole core 100 can be improved.
Further, after a plurality of positive lugs 11 are welded together, the positive connecting piece 30 is welded and fixed on one side of the positive lugs 11, so that the current can be led out to the positive pole, and after a plurality of negative lugs 21 are welded together, the negative connecting piece 40 is welded and fixed on two sides of the negative lugs 21, so that the current can be led out to the negative pole, the positive connecting piece 30 and the positive lugs 11 can be stably connected through the arrangement of the positive connecting piece 30 and the negative connecting piece 40, the negative connecting piece 40 and the negative lugs 21 can be stably connected, the stable leading out of the current inside the pole core 100 can be ensured, and the normal work of the pole core 100 can be ensured. It should be noted that the positive electrode connector 30 may be an aluminum tape, and the negative electrode connector 40 may be a nickel tape.
According to the utility model discloses battery can mainly include: the pole piece 100 is arranged in the shell. Specifically, the output of utmost point core 100 is higher, and the welding degree of difficulty is lower, through being applied to the battery with utmost point core 100, and set up in the shell of battery, the shell can play the cover to utmost point core 100 and establish the guard action like this on the one hand, can guarantee the structural stability of utmost point core 100, thereby guarantee the reliability of battery, on the other hand can be through being applied to the battery with utmost point core 100, not only can improve the output of battery, and can reduce the manufacturing degree of difficulty of battery, make things convenient for the batch production of battery, thereby improve the market competition of battery.
Further, a cap is arranged at the top of the shell, a positive connecting piece 30 and a negative connecting piece 40 are respectively welded and fixed at two ends of the pole core 100, the positive connecting piece 30 is welded and fixed with the cap, and the negative connecting piece 40 is welded and fixed with the bottom of the shell. Specifically, a cap is provided at the top of the case, and the cap can seal the inner space of the case, so that it is possible to prevent external water and gas from intruding into the inner space of the case and damaging the inner structure of the pole piece 100, thereby ensuring the reliability of the battery. Furthermore, the positive connecting piece 30 is welded and fixed with the cover cap, and the negative connecting piece 40 is welded and fixed with the bottom of the shell, so that the cover cap can be used as a positive leading-out end of the battery, and the bottom of the shell can be used as a negative leading-out end of the battery, thereby ensuring the normal operation of the battery.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do 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, should not be construed as limiting the present invention.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example.
While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (10)
1. A pole piece that is a wound structure wound along an axis, comprising:
the positive plate comprises a plurality of circles of positive winding parts and a plurality of radially stacked positive lugs, a plurality of the positive lugs are arranged in the circles of the positive winding parts, two positive lugs are adjacent to each other in the radial direction, at least one circle of the positive winding parts is arranged between every two positive lugs, and/or
The negative pole piece is arranged at an interval with the positive pole piece and comprises a plurality of circles of negative pole winding parts and a plurality of radially laminated negative pole ears, the plurality of negative pole ears are arranged on the plurality of circles of negative pole winding parts, and at least one circle of negative pole winding part is arranged between every two radially adjacent negative pole ears;
wherein the radial direction is perpendicular to the axis.
2. The pole piece of claim 1, wherein two radially adjacent positive pole ears are spaced M1 times the positive pole winding portion, M1 satisfying the relationship: m1 is more than or equal to 1 and less than or equal to 5; and/or
Two radially adjacent negative pole ears are spaced by M2 circles, and M2 satisfies the relation: m2 is more than or equal to 1 and less than or equal to 5.
3. The pole core according to claim 1, wherein the plurality of positive pole tabs are each of a rectangular configuration, and a width of the plurality of positive pole tabs increases in a direction extending from the radially inner side to the radially outer side, and a length direction of the positive pole tabs is a direction parallel to the axis; and/or
The negative electrode ears are of a rectangular structure, the width of each negative electrode ear increases along the direction extending from the radial inner side to the outer side, and the length direction of each negative electrode ear is parallel to the axis.
4. The pole piece of claim 3, wherein the positive tab has a width W1, the negative tab has a width W2, and W1 and W2 have a range of values: w1 is more than or equal to 3mm and less than or equal to 6mm, W2 is more than or equal to 3mm and less than or equal to 6mm.
5. The pole core according to claim 3, wherein the length of the positive pole lug is gradually reduced from two ends to the middle along the radial direction; and/or
Along the radial direction, the lengths of the negative electrode lugs are gradually reduced from two ends to the middle.
6. The pole body according to claim 1, wherein the positive tab positioned on the radially innermost side is provided on the positive wound portion of the N1 th turn in the direction extending from the radially inner side to the radially outer side, and N1 satisfies the relational expression: n1 is more than or equal to 2 and less than or equal to 9; and/or
In the direction in which the radially inner side extends outward, the radially innermost negative electrode tab is provided on the N2 th turn of the negative electrode winding portion, and N2 satisfies the relation: n2 is more than or equal to 2 and less than or equal to 9.
7. The pole core of claim 1, wherein the number of the plurality of positive pole lugs is L1, L1 satisfies the relation 8 ≦ L1 ≦ 18; and/or
The number of the negative electrode lugs is L2, and L2 satisfies the relation that L2 is more than or equal to 8 and less than or equal to 18.
8. The pole core according to claim 1, wherein a plurality of the positive pole lugs are integrally formed on the positive pole piece and welded together, and a positive pole connecting piece is welded and fixed to one side of the positive pole lugs which are welded together; and/or
The plurality of negative electrode lugs are integrally formed on the negative electrode sheet and welded together, and negative electrode connecting pieces are welded and fixed on two sides of the plurality of welded negative electrode lugs.
9. A battery, comprising: a housing; and the pole piece of any one of claims 1-8 disposed within the housing.
10. The battery according to claim 9, wherein a cap is disposed on the top of the housing, a positive connector and a negative connector are welded to two ends of the pole core, respectively, the positive connector is welded to the cap, and the negative connector is welded to the bottom of the housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221100058.XU CN218004909U (en) | 2022-05-09 | 2022-05-09 | Pole core and battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221100058.XU CN218004909U (en) | 2022-05-09 | 2022-05-09 | Pole core and battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218004909U true CN218004909U (en) | 2022-12-09 |
Family
ID=84291500
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221100058.XU Active CN218004909U (en) | 2022-05-09 | 2022-05-09 | Pole core and battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218004909U (en) |
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2022
- 2022-05-09 CN CN202221100058.XU patent/CN218004909U/en active Active
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