Battery cell, battery and vehicle

Abstract

The utility model discloses an electrical core, battery and vehicle, electrical core includes first pole core, second pole core, leading-out piece, first pole ear connected to first pole core end portion, and second pole ear connected to second pole core end portion, leading-out piece is connected between first pole ear and second pole ear, first pole core and second pole core can attach, leading-out piece is connected between first pole ear and second pole ear, leading-out piece is connected between first pole core and second pole core, leading-out piece is connected with the leading-out piece, leading-out piece is connected with the leading-out piece, leading-out piece is connected with the leading-out piece. An accommodating space is formed among the first tab, the second tab, the lead-out sheet, the first pole core and the second pole core; the supporting piece is positioned in the accommodating space and is used for supporting the first tab and the second tab; according to the battery cell provided by the embodiment of the utility model, the accommodating space is formed, the supporting piece is positioned in the accommodating space, and the supporting piece can support the first pole lug and the second pole lug on the basis of protecting a welding seam and preventing welding residues from falling off, so that the first pole lug and the second pole lug can be prevented from being compressed into the first pole core and the second pole core; and the safety of the battery cell is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicles, in particular to an electric core, a battery and a vehicle. Background Art

[0002] In the related art, the battery mainly includes a shell and a cover assembly, etc. The role of the shell is to provide a closed support space that can accommodate the electrode assembly and electrolyte, etc., and the electric energy of the electrode assembly is output from the closed space to the pole outside the closed space through the pole of the cover assembly. The closed space forms a hollow structure with an insulating tape built in, which is mainly used to protect the welding seam of the pole ear and prevent welding residue from falling, but it does not have a supporting function. The pole ear may be compressed into the middle of the electrode assembly, causing safety risks. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, one purpose of the utility model is to provide a battery cell having a storage space, a support member located in the storage space, and the support member can support the first pole ear and the second pole ear on the basis of protecting the weld and preventing welding residue from falling, so as to prevent the first pole ear and the second pole ear from being compressed into the first pole core and the second pole core, thereby improving the safety of the battery cell.

[0004] According to the first aspect of the utility model, the battery cell includes: a first pole core, a second pole core, a lead-out sheet, a first pole lug connected to the end of the first pole core, and a second pole lug connected to the end of the second pole core, the lead-out sheet is connected between the first pole lug and the second pole lug, wherein the first pole core and the second pole core can be fitted together, and a receiving space is constructed between the first pole lug, the second pole lug, the lead-out sheet, the first pole core and the second pole core; and a support member, wherein the support member is located in the receiving space and is used to support the first pole lug and the second pole lug.

[0005] According to the battery cell of the embodiment of the utility model, the first pole core and the second pole core can be fitted to construct an accommodation space between the first pole ear, the second pole ear, the lead-out sheet, the first pole core and the second pole core. The support member is located in the accommodation space. The support member can support the first pole ear and the second pole ear on the basis of protecting the weld and preventing welding residues from falling, thereby preventing the first pole ear and the second pole ear from being compressed into the first pole core and the second pole core, thereby improving the safety of the battery cell.

[0006] According to some embodiments of the present invention, the surface of the first pole tab facing the accommodating space has a first slope, the surface of the second pole tab facing the accommodating space has a second slope, and the first slope and the second slope are symmetrical about the fitting surface of the first pole core and the second pole core.

[0007] According to some embodiments of the present utility model, the first pole ear includes a first connecting portion and a first bending portion, the first connecting portion is connected to the end of the first pole core, and one end of the first bending portion is connected to the first connecting portion; the second pole ear includes a second connecting portion and a second bending portion, the second connecting portion is connected to the end of the second pole core, and one end of the second bending portion is connected to the second connecting portion; the other end of the first bending portion and the other end of the second bending portion are both bent in a direction approaching each other; wherein, the first connecting portion has the first inclined surface, the second bending portion has the second inclined surface, and the first bending portion and the second bending portion are both parallel to the end face of the first pole core or the end face of the second pole core.

[0008] According to some embodiments of the present invention, the bending part between the first connecting part and the first bending part has a first transition slope to increase the space at the bending part between the first connecting part and the first bending part; the bending part between the second connecting part and the second bending part has a second transition slope to increase the space at the bending part between the second connecting part and the second bending part.

[0009] According to some embodiments of the present invention, at least a portion of the support member fits against an inner wall surface of the accommodating space.

[0010] According to some embodiments of the utility model, the support member includes a first support area, a fixed area and a second support area, the first support area and the second support area are respectively located at two ends of the fixed area, the first pole ear and the second pole ear are both fixed on the same side of the fixed area, and the first support area and the second support area are suitable for flipping in a direction close to each other.

[0011] According to some embodiments of the present invention, the first supporting area includes a first overlapping area, which is located at an end of the first supporting area away from the fixed area; the second supporting area includes a second overlapping area, which is located at an end of the second supporting area away from the fixed area; wherein the first overlapping area and the second overlapping area overlap.

[0012] According to some embodiments of the utility model, a first bending zone is also connected between the first supporting zone and the fixed zone, and a first fold and a second fold separated from each other are provided on the same side of the first bending zone, and the first fold and the second fold are both constructed as grooves provided on the surface of the first bending zone, so that when the first supporting zone is bent, the surface of the first bending zone away from the first fold or the second fold is constructed in a circular arc shape; a second bending zone is also connected between the second supporting zone and the fixed zone, and a third fold and a fourth fold separated from each other are provided on the same side of the second bending zone, and the third fold and the fourth fold are both constructed as grooves provided on the surface of the second bending zone, so that when the second supporting zone is bent, the surface of the second bending zone away from the third fold or the fourth fold is constructed in a circular arc shape.

[0013] According to some embodiments of the present invention, the fixing area has a plurality of through holes arranged at intervals, and the through holes are located between the first pole lug and the second pole lug.

[0014] According to some embodiments of the utility model, the support member includes a support area and a first fixed area and a second fixed area spaced apart from each other, the first pole ear is connected to a side of the first fixed area away from the support area, the second pole ear is connected to a side of the second fixed area away from the support area, one end of the support area is connected to an end of the first fixed area away from the second fixed area, and the other end is connected to an end of the second fixed area away from the first fixed area.

[0015] According to some embodiments of the utility model, a first bending zone is also connected between the supporting zone and the first fixed zone, and a first fold and a second fold separated from each other are provided on the same side of the first bending zone, and the first fold and the second fold are both constructed as grooves provided on the surface of the first bending zone, so that when the first fixed zone is bent, the surface of the first bending zone away from the first fold or the second fold is constructed in a circular arc shape; a second bending zone is also connected between the supporting zone and the second fixed zone, and a third fold and a fourth fold separated from each other are provided on the same side of the second bending zone, and the third fold and the fourth fold are both constructed as grooves provided on the surface of the second bending zone, so that when the second fixed zone is bent, the surface of the second bending zone away from the third fold or the fourth fold is constructed in a circular arc shape.

[0016] According to some embodiments of the present invention, the support area has a plurality of through holes arranged at intervals, and the through holes are located between the first pole lug and the second pole lug.

[0017] A battery according to an embodiment of the second aspect of the utility model includes: a battery cell according to an embodiment of the first aspect of the utility model.

[0018] According to the battery of the embodiment of the utility model, by providing the above-mentioned battery cell, it is possible to avoid the first pole ear and the second pole ear from being compressed into the first pole core and the second pole core, thereby improving the safety of the battery cell and further improving the safety of the battery.

[0019] A vehicle according to an embodiment of the third aspect of the utility model comprises: a battery according to an embodiment of the second aspect of the utility model.

[0020] According to the vehicle of the embodiment of the utility model, by providing the above battery, the safety of the vehicle during operation can be improved. Additional aspects and advantages of the utility model will be partially given in the following description, partially become obvious from the following description, or be understood through the practice of the utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0022] Figure 1 is a cross-sectional view of a battery according to some embodiments of the present utility model;

[0023] Figure 2 is a schematic diagram of a folded support member according to some embodiments of the utility model;

[0024] Figure 3 is a cross-sectional view of a battery according to some other embodiments of the utility model;

[0025] Figure 4 It is a schematic diagram of a folded support member according to other embodiments of the utility model.

[0026] Reference numerals:

[0027] 1000. Battery;

[0028] 100, battery cell; 11, first pole core; 12, second pole core; 13, lead-out sheet; 14, first pole ear; 141, first connecting portion; 1411, first inclined plane; 142, first bending portion; 143, first transition inclined plane; 15, second pole ear; 151, second connecting portion; 1511, second inclined plane; 152, second bending portion; 153, second transition inclined plane; 16, accommodation space;

[0029] 20. Support member; 21. First supporting area; 211. First overlapping area; 22. Fixing area; 23. Second supporting area; 231. Second overlapping area; 24. First bending area; 241. First crease; 25. Second bending area; 251. Third crease; 26. First fixing area; 27. Second fixing area; 28. Support area. DETAILED DESCRIPTION

[0030] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0031] In the description of the present utility model, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0032] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0033] Reference below Figure 1-Figure 4 A battery cell 100 according to an embodiment of the present invention is described.

[0034] The battery cell 100 according to the embodiment of the first aspect of the utility model includes a first pole core 11, a second pole core 12, a lead-out plate 13, a first pole ear 14, a second pole ear 15 and a support member 20, one end of the first pole ear 14 is connected to the end of the first pole core 11, and the other end of the first pole ear 14 is connected to the lead-out plate 13; one end of the second pole ear 15 is connected to the end of the second pole core 12, and the other end of the second pole ear 15 is connected to the lead-out plate 13, and the first pole ear 14 and the second pole ear 15 are connected on the same side of the lead-out plate 13.

[0035] Among them, the first pole core 11 and the second pole core 12 can be fitted together, for example, the first pole core 11 and the second pole core 12 can be flipped toward the side away from the lead-out plate 13 and fitted together; the first pole core 11 and the second pole core 12 can be flipped 90° in a direction close to each other and fitted together.

[0036] When the first pole core 11 and the second pole core 12 are flipped toward each other, the first pole core 11 can drive the first pole ear 14 to fold, and the second pole core 12 can drive the second pole ear 15 to fold. For example, the first pole ear 14 and the second pole ear 15 can be made of aluminum, which is a relatively soft material. When the first pole core 11 is folded, the first pole ear 14 can be folded, and when the second pole core 12 is folded, the second pole ear 15 can be folded.

[0037] After the first pole core 11 and the second pole core 12 are bonded together, an accommodating space 16 can be constructed between the first pole ear 14, the second pole ear 15, the lead-out sheet 13, the first pole core 11 and the second pole core 12. The support member 20 is located in the accommodating space 16 and is used to support the first pole ear 14 and the second pole ear 15. This can prevent the first pole ear 14 and the second pole ear 15 from being compressed into the first pole core 11 and the second pole core 12, thereby improving the safety of the battery cell 100.

[0038] The first pole tab 14 can be connected to the lead-out tab 13 by welding, and a weld is formed at the welding connection between the first pole tab 14 and the lead-out tab 13, and welding residue is also formed; the second pole tab 15 can be connected to the lead-out tab 13 by welding, and a weld is formed at the welding connection between the second pole tab 15 and the lead-out tab 13, and welding residue is also formed. The support member 20 is located in the accommodating space 16, and the support member 20 can protect the weld and prevent the welding residue from falling.

[0039] According to the battery cell 100 of the embodiment of the utility model, the first pole core 11 and the second pole core 12 are fitted to construct a receiving space 16 between the first pole ear 14, the second pole ear 15, the lead-out piece 13, the first pole core 11 and the second pole core 12, and the support member 20 is located in the receiving space 16. The support member 20 can support the first pole ear 14 and the second pole ear 15 on the basis of protecting the weld and preventing welding residues from falling, and can prevent the first pole ear 14 and the second pole ear 15 from being compressed into the first pole core 11 and the second pole core 12, thereby improving the safety of the battery cell 100.

[0040] According to some embodiments of the present invention, referring to Figure 1 , Figure 3 The surface of the first pole lug 14 facing the accommodation space 16 has a first inclined surface 1411. Specifically, the surface of the first pole lug 14 connected to the first pole core 11 has the first inclined surface 1411. The first inclined surface 1411 extends obliquely in the direction from the lead-out piece 13 to the first pole core 11. The surface of the second pole lug 15 facing the accommodation space 16 has a second inclined surface 1511. Specifically, the surface of the second pole lug 15 connected to the second pole core 12 has the second inclined surface 1511. The second inclined surface 1511 extends obliquely in the direction from the lead-out piece 13 to the second pole core 12. The first inclined surface 1411 and the second inclined surface 1511 are symmetrical about the mating surface of the first pole core 11 and the second pole core 12, which can increase the stability of the accommodation space 16.

[0041] For example, in the projection plane perpendicular to the bonding surface, the projection shape of the accommodation space 16 is an isosceles triangle, which can further increase the stability of the accommodation space 16.

[0042] According to some embodiments of the present invention, referring to Figure 1 , Figure 3 The first pole lug 14 includes a first connecting portion 141 and a first bending portion 142. The first connecting portion 141 is connected to the end of the first pole core 11. One end of the first bending portion 142 is connected to the first connecting portion 141. The other end of the first bending portion 142 is connected to the lead-out piece 13. The first connecting portion 141 has a first inclined surface 1411.

[0043] The second pole lug 15 includes a second connecting portion 151 and a second bending portion 152 . The second connecting portion 151 is connected to the end of the second pole core 12 . One end of the second bending portion 152 is connected to the second connecting portion 151 . The other end of the second bending portion 152 is connected to the lead-out piece 13 . The second connecting portion 151 has a second inclined surface 1511 .

[0044] The other end of the first bending portion 142 and the other end of the second bending portion 152 are bent in a direction approaching each other; wherein the first bending portion 142 and the second bending portion 152 are parallel to the end face of the first pole core 11 or the end face of the second pole core 12, so as to form an isosceles triangle structure between the first connecting portion 141, the first bending portion 142, the second connecting portion 151 and the second bending portion 152, thereby further increasing the stability of the accommodating space 16.

[0045] According to some embodiments of the present invention, referring to Figure 1 , Figure 3 The bend between the first connection portion 141 and the first bend portion 142 has a first transition slope 143 to increase the space at the bend between the first connection portion 141 and the first bend portion 142, which can increase the stability of the bend. The bend between the second connection portion 151 and the second bend portion 152 has a second transition slope 153 to increase the space at the bend between the second connection portion 151 and the second bend portion 152, which can increase the stability of the bend.

[0046] According to some embodiments of the present invention, referring to Figure 1 , Figure 3 At least part of the support member 20 is in contact with the inner wall surface of the accommodating space 16. It can be that a part of the support member 20 is in contact with the inner wall surface of the accommodating space 16, or the entire support member 20 is in contact with the inner wall surface of the accommodating space 16, which can improve the supporting strength of the support member 20 for the first pole ear 14 and the second pole ear 15.

[0047] According to some embodiments of the present invention, referring to Figure 1-Figure 2 The support member 20 includes a first support area 21, a fixed area 22 and a second support area 23. The first support area 21 and the second support area 23 are respectively connected to the two ends of the fixed area 22. The first pole tab 14 and the second pole tab 15 are fixed to the same side of the fixed area 22. Specifically, the first bending portion 142 of the first pole tab 14 and the second bending portion 152 of the second pole tab 15 are located on the same side of the fixed area 22. For example, the fixed area 22 can be fixed to the first pole tab 14 and the second pole tab 15 by adhesive.

[0048] The first support area 21 and the second support area 23 are suitable for flipping in a direction close to each other, and the support member 20 is located in the accommodating space 16, which can improve the strength of the support member 20 in supporting the first pole tab 14 and the second pole tab 15. For example, the first support area 21 can be fitted with the first inclined surface 1411, and the second support area 23 can be fitted with the second inclined surface 1511. For another example, in the projection plane perpendicular to the fitting surface of the first pole core 11 and the second pole core 12, the projection shape of the support member 20 is an isosceles triangle, so that the stability of the support member 20 itself is stronger.

[0049] The first pole ear 14 and the second pole ear 15 are both fixed on the same side of the fixing area 22. When the first pole core 11 and the second pole core 12 are flipped in a direction approaching each other, the first pole core 11 can drive the first support area 21 to fold, and the second pole core 12 can drive the second support area 23 to fold, so that the first support area 21 and the second support area 23 can fit with the inner wall surface of the accommodating space 16.

[0050] According to some embodiments of the present invention, referring to Figure 1-Figure 2 The first support area 21 includes a first overlapping area 211, which is located at an end of the first support area 21 away from the fixed area 22; the second support area 23 includes a second overlapping area 231, which is located at an end of the second support area 23 away from the fixed area 22; wherein the first overlapping area 211 and the second overlapping area 231 are overlapped, which can prevent the edges of the first support area 21 and the second support area 23 from penetrating the first pole ear 14 or the second pole ear 15, and can improve the safety of the support member 20 supporting the first pole ear 14 and the second pole ear 15.

[0051] In a specific example, the first support area 21 has a fifth fold, the fifth fold is located at the edge of the first overlapping area 211, and is arranged close to the fixed area 22, and the fifth fold is configured as a groove arranged in the first overlapping area 211; the second support area 23 has a sixth fold, the sixth fold is located at the edge of the second overlapping area 231, and is arranged close to the fixed area 22, and the sixth fold is configured as a groove arranged in the second overlapping area 231. The fifth fold on the first support area 21 can facilitate the first overlapping area 211 to be folded when the first pole core 11 is folded, and the sixth fold on the second support area 23 can facilitate the second overlapping area 231 to be folded when the second pole core 12 is folded, so that the first overlapping area 211 is easy to overlap with the second overlapping area 231.

[0052] According to some embodiments of the present invention, referring to Figure 1-Figure 2 A first bending area 24 is also connected between the first supporting area 21 and the fixing area 22, and a first fold 241 and a second fold separated from each other are provided on the same side of the first bending area 24, and the first fold 241 and the second fold are both configured as grooves provided on the surface of the first bending area 24, so that when the first supporting area 21 is bent, the surface of the first bending area 24 away from the first fold 241 or the second fold is configured as an arc shape, which can prevent stress concentration in the first bending area 24. For example, the first bending area 24 can be located at the first transition slope 143 at the bend between the first connecting portion 141 and the first bending portion 142.

[0053] A second bending area 25 is also connected between the second supporting area 23 and the fixing area 22, and a third fold 251 and a fourth fold are provided on the same side of the second bending area 25, and the third fold 251 and the fourth fold are both configured as grooves provided on the surface of the second bending area 25, so that when the second supporting area 23 is bent, the surface of the second bending area 25 away from the third fold 251 or the fourth fold is configured as an arc shape, which can prevent stress concentration from occurring in the second bending area 25. For example, the second bending area 25 can be located at the second transition slope 153 at the bend between the second connecting portion 151 and the second bending portion 152.

[0054] According to some embodiments of the present invention, referring to Figure 1-Figure 2 The fixing area 22 has a plurality of through holes arranged at intervals, and the through holes are located between the first pole tab 14 and the second pole tab 15. On the one hand, when the electrolyte is injected into the first pole core 11 and the second pole core 12, the electrolyte can be injected into the first pole core 11 and the second pole core 12 through the through holes; on the other hand, the internal gas of the first pole core 11 and the second pole core 12 can be discharged through the through holes.

[0055] According to some embodiments of the present invention, referring to Figure 3-Figure 4 The support member 20 includes a support area 28 and a first fixing area 26 and a second fixing area 27, and the first fixing area 26 and the second fixing area 27 are arranged spaced apart. The first fixing area 26 is connected to the first pole tab 14, and the first pole tab 14 is connected to the side of the first fixing area 26 away from the support area 28; the second fixing area 27 is connected to the second pole tab 15, and the second pole tab 15 is connected to the side of the second fixing area 27 away from the support area 28. Specifically, the first bending portion 142 of the first pole tab 14 and the second bending portion 152 of the second pole tab 15 are located on the same side of the first fixing area 26 and the second fixing area 27. For example, the first fixing area 26 can be fixed to the first pole tab 14 by adhesive glue, and the second fixing area 27 can be fixed to the second pole tab 15 by adhesive glue.

[0056] One end of the support area 28 is connected to one end of the first fixing area 26 away from the second fixing area 27, and the other end of the support area 28 is connected to one end of the second fixing area 27 away from the first fixing area 26. The support member 20 is located in the accommodating space 16, and the support member 20 is used to support the first pole tab 14 and the second pole tab 15. For example, the first support area 21 can be in contact with the first inclined surface 1411, and the second support area 23 can be in contact with the second inclined surface 1511.

[0057] According to some embodiments of the present invention, referring to Figure 3-Figure 4A first bending area 24 is also connected between the support area 28 and the first fixing area 26, and a first fold 241 and a second fold separated from each other are provided on the same side of the first bending area 24. The first fold 241 and the second fold are both configured as grooves provided on the surface of the first bending area 24, so that when the first fixing area 26 is bent, the surface of the first bending area 24 away from the first fold 241 or the second fold is configured as an arc shape, which can prevent stress concentration in the first bending area 24. For example, the first bending area 24 can be located at the first transition slope 143 at the bend between the first connecting portion 141 and the first bending portion 142.

[0058] A second bending area 25 is also connected between the support area 28 and the second fixing area 27. A third fold 251 and a fourth fold are provided on the same side of the second bending area 25. The third fold 251 and the fourth fold are both configured as grooves provided on the surface of the second bending area 25. When the second fixing area 27 is bent, the surface of the second bending area 25 away from the third fold 251 or the fourth fold is configured as an arc shape, which can prevent stress concentration in the second bending area 25. For example, the second bending area 25 can be located at the second transition slope 153 at the bend between the second connecting portion 151 and the second bending portion 152.

[0059] According to some embodiments of the present invention, referring to Figure 1-Figure 2 The support area 28 has a plurality of through holes arranged at intervals, and the through holes are located between the first pole tab 14 and the second pole tab 15. On the one hand, when the electrolyte is injected into the first pole core 11 and the second pole core 12, the electrolyte can be injected into the first pole core 11 and the second pole core 12 through the through holes; on the other hand, the internal gas of the first pole core 11 and the second pole core 12 can be discharged through the through holes.

[0060] The battery 1000 according to the embodiment of the second aspect of the utility model comprises: the battery cell 100 according to the embodiment of the first aspect of the utility model.

[0061] According to the battery 1000 of the embodiment of the utility model, by providing the above-mentioned battery cell 100, it is possible to avoid the first pole tab 14 and the second pole tab 15 being compressed into the first pole core 11 and the second pole core 12, thereby improving the safety of the battery cell 100 and further improving the safety of the battery 1000.

[0062] A vehicle according to an embodiment of the third aspect of the utility model includes: a battery 1000 according to an embodiment of the second aspect of the utility model.

[0063] According to the vehicle of the embodiment of the utility model, by providing the battery 1000, the safety of the vehicle during operation can be improved.

[0064] In the description of this specification, the description with reference to the terms "some embodiments", "optionally", "further" or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0065] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A battery cell, characterized in that: include: A first pole core, a second pole core, a lead-out sheet, a first pole lug connected to an end of the first pole core, and a second pole lug connected to an end of the second pole core, wherein the lead-out sheet is connected between the first pole lug and the second pole lug, wherein the first pole core and the second pole core can be fitted, and an accommodation space is constructed between the first pole lug, the second pole lug, the lead-out sheet, the first pole core, and the second pole core; A support member is located in the accommodating space and is used to support the first pole tab and the second pole tab.

2. The battery cell according to claim 1, characterized in that: The surface of the first pole tab facing the accommodation space has a first slope, and the surface of the second pole tab facing the accommodation space has a second slope. The first slope and the second slope are symmetrical about the mating surface of the first pole core and the second pole core.

3. The battery cell according to claim 2, characterized in that: The first pole lug includes a first connecting portion and a first bending portion, the first connecting portion is connected to the end of the first pole core, and one end of the first bending portion is connected to the first connecting portion; The second pole tab includes a second connecting portion and a second bending portion, the second connecting portion is connected to the end of the second pole core, and one end of the second bending portion is connected to the second connecting portion; The other end of the first bending portion and the other end of the second bending portion are bent toward a direction close to each other; wherein, The first connecting portion has the first inclined surface, the second bent portion has the second inclined surface, and the first bent portion and the second bent portion are both parallel to the end surface of the first pole core or the end surface of the second pole core.

4. The battery cell according to claim 3, characterized in that: The bending part between the first connecting part and the first bending part has a first transition slope to increase the space at the bending part between the first connecting part and the first bending part; A second transition slope is provided at the bending portion between the second connecting portion and the second bending portion to increase the space at the bending portion between the second connecting portion and the second bending portion.

5. The battery cell according to any one of claims 1 to 4, characterized in that: At least part of the support member is in contact with the inner wall surface of the accommodating space.

6. The battery cell according to any one of claims 1 to 5, characterized in that: The support member includes a first support area, a fixed area and a second support area, the first support area and the second support area are respectively located at two ends of the fixed area, the first pole ear and the second pole ear are fixed on the same side of the fixed area, and the first support area and the second support area are suitable for flipping in a direction close to each other.

7. The battery cell according to claim 6, characterized in that: The first supporting area includes a first overlapping area, and the first overlapping area is located at an end of the first supporting area away from the fixing area; The second supporting area includes a second overlapping area, and the second overlapping area is located at an end of the second supporting area away from the fixing area; The first overlapping area and the second overlapping area are overlapped.

8. The battery cell according to claim 6, characterized in that: A first bending area is further connected between the first supporting area and the fixing area, and a first fold and a second fold separated from each other are provided on the same side of the first bending area, and the first fold and the second fold are both configured as grooves provided on the surface of the first bending area, so that when the first supporting area is bent, the surface of the first bending area away from the first fold or the second fold is configured as an arc shape; A second bending area is also connected between the second supporting area and the fixed area, and a third fold and a fourth fold separated from each other are provided on the same side of the second bending area. The third fold and the fourth fold are both constructed as grooves provided on the surface of the second bending area, so that when the second supporting area is bent, the surface of the second bending area away from the third fold or the fourth fold is constructed in an arc shape.

9. The battery cell according to claim 6, characterized in that: The fixing area has a plurality of through holes arranged at intervals, and the through holes are located between the first pole lug and the second pole lug.

10. The battery cell according to any one of claims 1 to 5, characterized in that: The support member includes a support area and a first fixed area and a second fixed area that are spaced apart from each other, the first pole ear is connected to a side of the first fixed area that is away from the support area, the second pole ear is connected to a side of the second fixed area that is away from the support area, one end of the support area is connected to an end of the first fixed area that is away from the second fixed area, and the other end is connected to an end of the second fixed area that is away from the first fixed area.

11. The battery cell according to claim 10, characterized in that: A first bending area is further connected between the supporting area and the first fixing area, and a first fold and a second fold separated from each other are provided on the same side of the first bending area, and the first fold and the second fold are both configured as grooves provided on the surface of the first bending area, so that when the first fixing area is bent, the surface of the first bending area away from the first fold or the second fold is configured as an arc shape; A second bending area is also connected between the supporting area and the second fixed area, and a third fold and a fourth fold separated from each other are provided on the same side of the second bending area. The third fold and the fourth fold are both constructed as grooves provided on the surface of the second bending area, so that when the second fixed area is bent, the surface of the second bending area away from the third fold or the fourth fold is constructed in an arc shape.

12. The battery cell according to claim 10, characterized in that: The support area has a plurality of through holes arranged at intervals, and the through holes are located between the first pole lug and the second pole lug.

13. A battery, characterized in that: include: A battery cell according to any one of claims 1 to 12.

14. A vehicle, characterized in that: include: A battery according to claim 13.

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