Pole, conductive structure, cover plate assembly, battery and electric equipment

Abstract

The utility model discloses a pole, a conductive structure, a cover plate assembly, a battery and electric equipment. The deformation part comprises a first end face and a second end face which are opposite, the second end face is connected with the main body, the deformation part is of a cylindrical structure, and a through hole penetrating through the first end face and the second end face is defined by the deformation part; the wall thickness of the deformation part at the first end face is W1, the wall thickness of the deformation part at the second end face is W2, W1 / W2 is larger than or equal to 0.9 and smaller than or equal to 1.1, the deformation part is suitable for pressing riveting to form a flange, the wall thicknesses of all the positions of the deformation part are close or the same, and the deformation part is not prone to fracture due to the influence of internal stress when the flange is formed through pressing riveting.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, and in particular to a pole, a conductive structure, a cover plate assembly, a battery and electrical equipment. Background Art

[0002] The riveting of the battery cover and the pole is an important battery manufacturing process, which is used to firmly connect the pole to the battery cover. This connection method not only ensures the stability of the internal structure of the battery, but also effectively prevents safety issues such as electrolyte leakage.

[0003] In the prior art, the portion of the pole used for riveting to form the flange has a problem of being easily broken due to the influence of internal stress due to the large thickness variation. Utility Model Content

[0004] The utility model aims to provide a pole, a conductive structure, a cover plate assembly, a battery and an electrical device, so as to solve the problem that the part of the pole used for riveting to form a flange in the prior art is easily broken due to the influence of internal stress due to excessive thickness variation.

[0005] In order to achieve the purpose of the utility model, the utility model provides the following technical solutions:

[0006] In the first aspect, the utility model provides a pole, which includes: a main body; a deformation portion, including a first end face and a second end face opposite to each other, the second end face is connected to the main body, the deformation portion is a cylindrical structure, and encloses a through hole that passes through the first end face and the second end face; the wall thickness of the deformation portion at the first end face is W1, and the wall thickness of the deformation portion at the second end face is W2, satisfying: 0.9≤W1 / W2≤1.1, and the deformation portion is suitable for riveting to form a flange.

[0007] In one implementation, a wall thickness of the deformation portion at any position between the first end surface and the second end surface is W3, satisfying: 0.9≤W1 / W3≤1.1.

[0008] In one embodiment, the pole is a rotationally symmetrical structure, and the cross-sectional shape of the pole and the through hole at any position in the axial direction of the pole is circular.

[0009] In one implementation, the depth of the through hole is H, satisfying 0.5 mm ≤ H ≤ 2 mm.

[0010] In one embodiment, the main body includes a first column and a second column, the first column and the second column are connected, the deformation portion is connected to an end of the first column away from the second column, and the diameter of the deformation portion is the same as the diameter of the first column.

[0011] In one embodiment, the diameter of the first column is A, the diameter of the through hole is B, and they satisfy 1mm≤(AB)≤4mm.

[0012] In one embodiment, the diameter of the second column is C, and satisfies 0.2 mm≤(CA)≤2 mm.

[0013] In one embodiment, the electrode column is a negative electrode column, and the negative electrode column is a copper component.

[0014] In a second aspect, the utility model further provides a conductive structure for a cover plate assembly, the conductive structure comprising a lead-out piece and a pole according to any one of the various embodiments of the first aspect, the lead-out piece being connected to an end of the main body away from the deformation portion.

[0015] In one embodiment, the lead-out sheet includes a sheet body and a connecting portion, the sheet body includes a first surface, the connecting portion is connected to the first surface, and the connecting portion is connected to the pole.

[0016] In one embodiment, the lead-out piece and the pole are an integrated structure.

[0017] In the third aspect, the utility model also provides a cover plate assembly, comprising a conductive member, a cover plate and a conductive structure described in any one of the embodiments of the second aspect, wherein the conductive member and the lead-out piece of the conductive structure are respectively arranged on opposite sides of the thickness direction of the cover plate, the conductive member is provided with a rivet hole, the cover plate is provided with a first through hole, the rivet hole and the first through hole are opposite to each other, the pole of the conductive structure is passed through the rivet hole and the first through hole, the deformed portion of the pole is a flange, and is riveted to the conductive member.

[0018] In one embodiment, there is at least one conductive structure, the lead-out pieces of the conductive structure are connected, and the poles of the conductive structure are riveted to the conductive member.

[0019] In one embodiment, the cover plate assembly further includes a first insulating member, a second insulating member and a sealing ring, wherein the first insulating member is connected between the conductive member and the cover plate, the second insulating member is connected between the lead-out piece of the conductive structure and the cover plate, and the sealing ring is arranged between the cover plate and the second insulating member and is sleeved on the pole.

[0020] In a fourth aspect, the utility model further provides a battery, comprising a shell, a battery cell and a cover assembly described in any one of the embodiments of the third aspect, wherein the shell has a accommodating cavity, the battery cell is accommodated in the accommodating cavity, the cover assembly is connected to the shell and closes the accommodating cavity, and the conductive structure of the cover assembly is electrically connected to the battery cell.

[0021] In a fifth aspect, the utility model further provides an electrical device, comprising an electrical device and a battery as described in any one of the various embodiments of the fourth aspect, wherein the battery is suitable for supplying power to the electrical device.

[0022] By setting a deformation part, the deformation part includes a first end face and a second end face opposite to each other, the second end face is connected to the main body, the deformation part is a cylindrical structure, and encloses a through hole that penetrates the first end face and the second end face; the wall thickness of the deformation part at the first end face is W1, and the wall thickness of the deformation part at the second end face is W2, satisfying: 0.9≤W1 / W2≤1.1, the deformation part is suitable for riveting to form a flange, so that the wall thickness of each part of the deformation part is close or the same, and it is not easy to be broken due to the influence of its internal stress when the flange is formed by riveting. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 is a structural diagram of a pole of an embodiment;

[0025] Figure 2 is a cross-sectional view of a pole of an embodiment;

[0026] Figure 3 is an exploded view of a cover plate assembly of an embodiment;

[0027] Figure 4 is a cross-sectional view of a cover plate assembly according to an embodiment.

[0028] Description of reference numerals:

[0029] 1000-cover plate assembly;

[0030] 100-conductive structure;

[0031] 10-pole, 11-main body, 111-first column, 112-second column, 12-deformation portion, 121-first end surface, 122-second end surface, 123-through hole;

[0032] 20-lead-out sheet, 21-sheet body, 211-first surface, 212-second surface, 213-third surface, 214-fourth surface, 22-connecting portion;

[0033] 200-conductive member, 201-riveting hole, 2011-first hole, 2012-second hole, 2013-riveting surface, 202-first positioning hole;

[0034] 300-cover plate, 301-first through hole, 302-liquid injection port, 303-explosion-proof valve, 304-first containing groove, 305-second positioning hole;

[0035] 400 - first insulating member, 401 - second through hole, 402 - first protruding column, 4021 - structural hole, 403 - second protruding column, 404 - third protruding column;

[0036] 500 - second insulating member, 501 - third through hole, 502 - second receiving groove, 503 - liquid inlet hole;

[0037] 600-Seal ring. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0039] It should be noted that when a component is said to be "fixed to" another component, it can be directly on the other component or there can be a central component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there can be a central component at the same time.

[0040] Unless otherwise defined, all technical and scientific terms used in this utility model have the same meaning as those commonly understood by technicians in the technical field of this utility model. The terms used in the specification of this utility model are only for the purpose of describing specific embodiments and are not intended to limit this utility model. The term "and / or" used in this utility model includes any and all combinations of one or more related listed items.

[0041] In conjunction with the accompanying drawings, some embodiments of the present invention are described in detail below. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0042] Please refer to Figure 1 and Figure 2The utility model provides a pole 10, which includes a main body 11 and a deformation portion 12, the deformation portion 12 includes a first end face 121 and a second end face 122 opposite to each other, the second end face 122 is connected to the main body 11, the deformation portion 12 is a cylindrical structure, and encloses a through hole 123 that penetrates the first end face 121 and the second end face 122, the wall thickness of the deformation portion 12 at the first end face 121 is W1, and the wall thickness of the deformation portion 12 at the second end face 122 is W2, satisfying: 0.9≤W1 / W2≤1.1, and the deformation portion 12 is suitable for riveting to form a flange.

[0043] Optionally, the deformation portion 12 extends into the through hole 123 through an external conical extrusion member (not shown), and extrudes the inner peripheral wall of the through hole 123 to deform the deformation portion 12 to form a flange. Optionally, the main body 11 and the deformation portion 12 can be an integrated structure, or can be detachably connected by means of clamping, riveting, screwing, etc., without limitation.

[0044] Optionally, W1 / W2 may be 0.9, 0.95, 1.05, 1.1, etc., without limitation. Optionally, the sidewall surface of the through hole 123 may extend in a straight line or in a curved direction from the first end surface 121 to the second end surface 122, without limitation.

[0045] By setting the deformation part 12, the deformation part 12 includes a first end face 121 and a second end face 122 opposite to each other, the second end face 122 is connected to the main body 11, the deformation part 12 is a cylindrical structure, and encloses a through hole 123 that penetrates the first end face 121 and the second end face 122. The wall thickness of the deformation part 12 at the first end face 121 is W1, and the wall thickness of the deformation part 12 at the second end face 122 is W2, satisfying: 0.9≤W1 / W2≤1.1, the deformation part 12 is suitable for riveting to form a flange, so that the wall thickness of each part of the deformation part 12 is close or the same, and it is not easy to be broken due to the influence of its internal stress when the flange is formed by riveting.

[0046] Please refer to Figure 2 The wall thickness of the deformation portion 12 at any position between the first end surface 121 and the second end surface 122 is W3, which satisfies: 0.9≤W1 / W3≤1.1. Optionally, W1 / W2 can be 0.9, 0.95, 1.05, 1.1, etc., without limitation.

[0047] By setting the wall thickness of the deformation portion 12 at any position between the first end face 121 and the second end face 122 to W3, the following is satisfied: 0.9≤W1 / W3≤1.1, so that the wall thickness of the deformation portion 12 at various locations is close to or the same, and it is not easy to be broken due to the influence of its internal stress when the flange is formed by riveting.

[0048] Please refer to Figure 1The pole 10 is a rotationally symmetrical structure, and the cross-sectional shapes of the pole 10 and the through hole 123 at any position in the axial direction of the pole 10 are both circular.

[0049] Optionally, the cross-sectional shape of the pole 10 at any position in the axial direction may also be a rectangle, a triangle, an ellipse, etc., without limitation. Optionally, the cross-sectional shape of the through hole 123 at any position in the axial direction may also be a rectangle, a triangle, an ellipse, etc., without limitation.

[0050] By setting the pole 10 to be a rotationally symmetrical structure, the cross-sectional shape of the pole 10 and the through hole 123 at any position in the axial direction is circular, so that the deformation portion 12 is easy to form a circular flange, thereby improving the connection strength and stability of the riveted structure, while improving the structural strength of the pole 10 and reducing the processing difficulty of the pole 10.

[0051] Please refer to Figure 2 The depth of the through hole 123 is H, which satisfies 0.5 mm (millimeter) ≤ H ≤ 2 mm. Optionally, H can be 0.5 mm, 1 mm, 1.5 mm, 2 mm, etc., without limitation.

[0052] Optionally, when H>2mm, there is a risk that the flange cannot be closely fitted with the riveted surface 2013 of the cover plate assembly 1000, and it is easy to become loose or fall off, and when the flange length is too long, it is easy to be cracked or broken by external force, and the current carrying capacity of the pole 10 will be reduced. Optionally, when H<0.2mm, the contact area between the flange and the riveted surface 2013 is small, and there is a risk of insufficient support and fixation.

[0053] By setting the depth of the through hole 123 to H and satisfying 0.5 mm ≤ H ≤ 2 mm, the deformed portion 12 has a mechanical strength that meets the structural strength requirements and a strong flow capacity after forming a flange.

[0054] Please refer to Figure 1 and Figure 2 The main body 11 includes a first column 111 and a second column 112 , the first column 111 and the second column 112 are connected, the deformation portion 12 is connected to one end of the first column 111 away from the second column 112 , and the diameter of the deformation portion 12 is the same as the diameter of the first column 111 .

[0055] Optional, please refer to Figure 1 The first column 111 and the second column 112 can be an integral structure, or can be detachably connected by welding, screwing, riveting, etc., without limitation.

[0056] By setting the first column 111 and the second column 112, the first column 111 and the second column 112 are connected, the deformation portion 12 is connected to the end of the first column 111 away from the second column 112, the diameter of the deformation portion 12 is the same as the diameter of the first column 111, the diameter of the first column 111 is A, the diameter of the through hole 123 is B, and mm1≤(AB)≤4mm is satisfied, so that the pole 10 has a mechanical strength that meets the structural strength requirements and is easy to install and process.

[0057] Please refer to Figure 2 , the diameter of the first column 111 is A, the diameter of the through hole 123 is B, and they satisfy 1mm≤(AB)≤4mm.

[0058] Optional, please refer to Figure 2 , (AB) can be 1mm, 2mm, 3mm and 4mm, etc., without limitation. Optionally, when (AB)>4mm, the deformation portion 12 is not easy to deform. Optionally, when (AB)<1mm, the structural strength of the deformation portion 12 is low, and it is easy to crack or even break after the flange is formed.

[0059] By setting the diameter of the first column 111 to A, the diameter of the through hole 123 to B, and satisfying 1mm≤(AB)≤4mm, the deformation portion 12 is easy to deform to form a flange, and has a mechanical strength that meets the structural strength requirements, and is not prone to cracking or even breaking after the flange is formed.

[0060] Please refer to Figure 2 , the diameter of the second column 112 is C, and satisfies 0.2mm≤(CA)≤2mm. Optionally, (CA) can be 0.2mm, 0.4mm, 0.6mm, 0.8mm, 1mm, 1.2mm, 1.4mm, 1.6mm, 1.8mm and 2mm, etc., without limitation. Optionally, when (CA)>2mm, the resistance difference between the first column 111 and the second column 112 is large, which may lead to risks such as uneven current distribution, increased energy consumption and decreased circuit stability. Optionally, when (CA)<0.2mm, due to the long length of the pole 10, the second column 112 is easily deformed when the deformation portion 12 is riveted to form a flange, thereby damaging the structure of the pole 10.

[0061] By setting the diameter of the second column 112 to C and satisfying 0.2.mm≤(CA)≤2mm, the current carrying capacity between the first column 111 and the second column 112 is close, and the second column 112 is not easily deformed, thereby ensuring the stability of the pole 10.

[0062] Please refer to Figure 1, the pole 10 is a negative pole, and the negative pole is a copper component. Optionally, the pole 10 is a negative pole, and the negative pole is a copper component, that is, the material of the negative pole is copper. Optionally, the pole 10 can also be a positive pole, and the positive pole is an aluminum component, that is, the material of the positive pole is aluminum.

[0063] The negative electrode column in the prior art is usually a copper-aluminum alloy component. Due to the large difference in electrode potential between copper and aluminum, there is a risk of corrosion of the negative electrode column. In addition, the copper-aluminum alloy is more difficult to process than a single metal material, which is not conducive to reducing processing costs. At the same time, there are differences in the physical and chemical properties of copper and aluminum, and their connection stability is insufficient compared to a single metal material, which easily leads to the risk of cracking of the negative electrode column.

[0064] By setting the pole 10 as a negative pole, which is a copper component, the negative pole provided by the present solution has better electrical conductivity, corrosion resistance and mechanical strength than the negative pole in the prior art, and is easy to process and shape, which is conducive to reducing processing costs.

[0065] Please refer to Figure 1 The utility model further provides a conductive structure 100 for a cover plate assembly 1000 . The conductive structure 100 includes a lead-out piece 20 and a pole 10 in an embodiment of the utility model. The lead-out piece 20 is connected to an end of the main body 11 away from the deformation portion 12 .

[0066] Optional, please refer to Figure 1 The lead-out piece 20 and the pole 10 may be an integrated structure, or may be detachably connected by means of snap connection, screw connection, riveting, etc., without limitation. Optionally, the lead-out piece 20 is used to connect to the battery cell of the battery.

[0067] The conductive structure 100 provided by the utility model is used for the cover plate assembly 1000. The conductive structure 100 includes a lead-out piece 20 and a pole 10 in an embodiment of the utility model. The lead-out piece 20 is connected to an end of the main body 11 away from the deformation portion 12, so that the various components of the cover plate assembly 1000 can be tightly connected under the limiting action of the flange and the lead-out piece 20, and at the same time, it is convenient to connect the pole 10 with the battery cell.

[0068] Please refer to Figure 1 and Figure 2 The lead-out piece 20 includes a piece body 21 and a connecting portion 22 . The piece body 21 includes a first surface 211 . The connecting portion 22 is connected to the first surface 211 . The connecting portion 22 is connected to an end of the main body 11 away from the deformation portion 12 .

[0069] Optional, please refer to Figure 2The sheet body 21 also includes a second surface 212, a third surface 213 and a fourth surface 214, which are connected in sequence. The second surface 212 is connected to the first surface 211, and the second surface 212, the third surface 213 and the fourth surface 214 are all connected to other lead-out sheets 20.

[0070] By providing the lead-out piece 20 including a piece body 21 and a connecting portion 22, the piece body 21 includes a first surface 211, the connecting portion 22 is connected to the first surface 211, and the connecting portion 22 is connected to an end of the main body 11 away from the deformation portion 12, the mechanical strength of the connection between the pole 10 and the lead-out piece 20 is improved, the risk of breakage or loosening of the connection due to external force is reduced, and it helps to ensure the stability and safety of current transmission.

[0071] Please refer to Figure 1 The lead-out piece 20 and the pole 10 are an integrated structure. Optionally, the lead-out piece 20 and the pole 10 can be formed by casting, milling, turning, laser cutting, stamping and other processing methods, without limitation.

[0072] By setting the lead-out piece 20 and the pole 10 as an integrated structure, the mechanical strength of the connection between the pole 10 and the lead-out piece 20 is improved, and the risk of breakage or loosening of the connection between the pole 10 and the lead-out piece 20 due to external force is reduced, which helps to ensure the stability and safety of current transmission and facilitates assembly and disassembly.

[0073] Please refer to Figure 3 and Figure 4 The utility model also provides a cover plate assembly 1000, including a conductive member 200, a cover plate 300, a lead-out sheet 20 and a conductive structure 100 in an embodiment of the utility model, wherein the conductive member 200 and the lead-out sheet 20 of the conductive structure 100 are respectively arranged on opposite sides of the thickness direction of the cover plate 300, the conductive member 200 is provided with a rivet hole 201, the cover plate 300 is provided with a first through hole 301, the rivet hole 201 and the first through hole 301 are directly opposite, the pole 10 of the conductive structure 100 is penetrated by the rivet hole 201 and the first through hole 301, the deformed portion 12 of the pole 10 is a flange, and is riveted to the conductive member 200.

[0074] Optional, please refer to Figure 4 The riveting hole 201 includes a first hole 2011 and a second hole 2012, the first hole 2011 and the second hole 2012 are connected, the first hole 2011 is located on a side of the second hole 2012 away from the cover plate 300, the diameter of the first hole 2011 is larger than the second hole 2012 to form a riveting surface 2013, and the deformed portion 12 is fixedly connected to the riveting surface 2013. Optionally, the diameter of the first through hole 301 is larger than the maximum diameter of the pole 10 to prevent a short circuit between the pole 10 and the shell.

[0075] Optional, please refer to Figure 3 and Figure 4 The cover plate 300 is provided with a liquid injection port 302, which is used to inject electrolyte into the battery housing. Optionally, the surface of the cover plate 300 facing the conductive member 200 is provided with an explosion-proof valve 303, which is used to exhaust gas and discharge electrolyte when the pressure in the battery is too high.

[0076] Optionally, the conductive member 200 may be made of a material that meets the requirements of structural strength, good conductivity and easy processing and forming, specifically aluminum alloy, copper, copper alloy and copper-aluminum alloy, etc., without limitation. Optionally, the cover plate 300 may be made of a material that meets the requirements of structural strength and easy processing and forming, specifically aluminum alloy, carbon fiber and copper alloy, etc., without limitation. Optionally, the material of the lead sheet 20 is similar to that of the pole 10, which can be referred to and will not be described in detail.

[0077] The cover plate assembly 1000 provided by the present invention adopts a conductive member 200, a cover plate 300, a lead-out sheet 20 and a conductive structure 100 in an embodiment of the present invention. The conductive member 200 and the lead-out sheet 20 of the conductive structure 100 are respectively arranged on opposite sides of the thickness direction of the cover plate 300. The conductive member 200 is provided with a rivet hole 201, and the cover plate 300 is provided with a first through hole 301. The rivet hole 201 and the first through hole 301 are directly opposite to each other. The pole 10 of the conductive structure 100 is penetrated by the rivet hole 201 and the first through hole 301. The deformed portion 12 of the pole 10 is a flange and is riveted to the conductive member 200, so that the structure of the cover plate assembly 1000 is stable. At the same time, the pole 10 is easy to be riveted and has low deformation difficulty.

[0078] Please refer to Figure 3 , there is at least one conductive structure 100, the lead-out pieces 20 of the conductive structure 100 are connected, and the poles 10 of the conductive structure 100 are riveted to the conductive member 200. Optionally, the multiple conductive structures 100 may be an integrated structure, or may be detachably connected by means of snap connection, screw connection, and riveting, without limitation.

[0079] Optionally, there may be a plurality of conductive members 200, and the plurality of conductive members 200 are arranged in a one-to-one correspondence with the plurality of conductive structures 100. Optionally, the aforementioned rivet holes 201 and the first through holes 301 are both multiple, the plurality of rivet holes 201 are arranged at intervals from each other, the plurality of first through holes 301 are arranged at intervals from each other, the plurality of rivet holes 201 are arranged in a one-to-one correspondence with the plurality of poles 10, and the plurality of first through holes 301 are arranged in a one-to-one correspondence with the plurality of poles 10.

[0080] By providing at least one conductive structure 100, the lead-out pieces 20 of the conductive structure 100 are connected, and the poles 10 of the conductive structure 100 are riveted to the conductive member 200, the resistance of the conductive structure 100 is further reduced, and the current handling capacity of the conductive structure 100 is improved, which helps to reduce local overheating and performance degradation caused by uneven current distribution, and improve the stability and reliability of the battery.

[0081] Please refer to Figure 3 and Figure 4 The cover plate assembly 1000 also includes a first insulating member 400, a second insulating member 500 and a sealing ring 600. The first insulating member 400 is connected between the conductive member 200 and the cover plate 300, the second insulating member 500 is connected between the lead-out piece 20 of the conductive structure 100 and the cover plate 300, and the sealing ring 600 is arranged between the lead-out piece 20 and the cover plate 300, and is sleeved on the pole 10.

[0082] Optional, please refer to Figure 3 The first insulating member 400 is provided with a second through hole 401, the second insulating member 500 is provided with a third through hole 501, and the pole 10 is provided with the second through hole 401 and the third through hole 501. Optionally, there are multiple second through holes 401 and multiple third through holes 501, the multiple second through holes 401 are arranged at intervals, the multiple third through holes 501 are arranged at intervals, and the multiple second through holes 401 and the multiple corresponding third through holes 501 are arranged in one-to-one correspondence with the multiple poles 10.

[0083] Optional, please refer to Figure 3 The surface of the cover plate 300 facing the first insulating member 400 is provided with a first receiving groove 304, and the first insulating member 400 is partially received in the first receiving groove 304. Optionally, the surface of the second insulating member 500 facing the cover plate 300 is provided with a second receiving groove 502, and the sealing ring 600 is received in the second receiving groove 502, and the third through hole 501 passes through the second receiving groove 502.

[0084] Optional, please refer to Figure 4 The end surface of the connecting portion 22 of the lead-out piece 20 away from the piece body 21 is flush with the bottom wall surface of the second receiving groove 502 , and the sealing ring 600 abuts against the bottom wall surface of the second receiving groove 502 and the end surface of the connecting portion 22 away from the piece body 21 .

[0085] Optional, please refer to Figure 3 and Figure 4The surface of the first insulating member 400 facing the conductive member 200 is provided with a plurality of first protruding posts 402 arranged at intervals, and the surface of the conductive member 200 facing the first insulating member 400 is provided with a plurality of first positioning holes 202, and the plurality of first protruding posts 402 extend into the plurality of first positioning holes 202 one by one to prevent the conductive member 200 and the first insulating member 400 from rotating relative to each other. Optionally, the first protruding posts 402 are provided with structural holes 4021, and when the conductive member 200 is riveted to the pole 10, it is closely fitted with the first insulating member 400 and squeezes the first protruding posts 402, and the opening of the structural holes 4021 facilitates the deformation of the first protruding posts 402 when being squeezed.

[0086] Optional, please refer to Figure 4 The surface of the first insulating member 400 facing the cover plate 300 is provided with a plurality of second protruding posts 403 arranged at intervals, and the surface of the cover plate 300 facing the first insulating member 400 is provided with a plurality of second positioning holes 305, and the plurality of second protruding posts 403 extend into the plurality of second positioning holes 305 one by one to prevent the cover plate 300 and the first insulating member 400 from rotating relative to each other. Optionally, the structure of the second protruding posts 403 is similar to that of the first protruding posts 402, and reference can be made thereto, and no further description is given.

[0087] Optional, please refer to Figure 4 The surface of the first insulating member 400 facing the cover plate 300 is further provided with a third protruding column 404, the second through hole 401 penetrates the third protruding column 404, the third protruding column 404 extends into the first through hole 301, and is sleeved on the pole 10 to isolate the pole 10 from the cover plate 300. Optionally, there are multiple third protruding columns 404, and the multiple third protruding columns 404 are arranged one by one corresponding to the multiple first through holes 301.

[0088] Optional, please refer to Figure 3 The second insulating member 500 is also provided with a liquid inlet hole 503, which is in communication with the aforementioned liquid injection port 302 and the battery receiving chamber, so that the electrolyte enters the receiving chamber through the liquid inlet hole 503. Optionally, there are multiple sealing rings 600, and the multiple sealing rings 600 are arranged in a one-to-one correspondence with the multiple poles 10. Optionally, the first insulating member 400, the second insulating member 500 and the sealing ring 600 can all be made of materials that meet the requirements of structural strength, good insulation and stable chemical properties, and can be specifically rubber, plastic, silicone, etc., without limitation.

[0089] By setting a first insulating member 400, a second insulating member 500 and a sealing ring 600, the first insulating member 400 is connected between the conductive member 200 and the cover plate 300, the second insulating member 500 is connected between the lead-out piece 20 and the cover plate 300, and the sealing ring 600 is set between the lead-out piece 20 of the conductive structure 100 and the cover plate 300, and is sleeved on the pole 10, so that the conductive member 200 and the pole 10 are isolated from the cover plate 300, preventing the cover plate 300 from short-circuiting the conductive member 200 and the pole 10, and making the cover plate assembly 1000 stable after riveting, and not easy to loosen, and at the same time preventing the battery shell from leaking electricity, thereby ensuring the safety of the battery.

[0090] Please refer to Figure 3 The present invention also provides a battery (not shown), including a shell (not shown), a battery cell (not shown) and a cover assembly 1000 in an embodiment of the present invention, the shell having a receiving cavity (not shown), the battery cell being received in the receiving cavity, the cover assembly 1000 being connected to the shell and sealing the receiving cavity, and the conductive structure 100 of the cover assembly 1000 being electrically connected to the battery cell.

[0091] Optionally, the battery may be a power battery, a household energy storage battery, a commercial energy storage battery, an industrial energy storage battery, etc., without limitation. Optionally, the accommodating cavity is filled with an electrolyte (not shown), and the battery cell is immersed in the electrolyte so that the battery cell can be charged and discharged by the electrolyte. Optionally, the cover plate 300 of the cover plate assembly 1000 in the embodiment of the utility model is connected to the shell. Optionally, the cover plate 300 and the shell can be connected and fixed by welding, clamping, bonding, riveting and screwing, etc., without limitation.

[0092] Optionally, the shell can be made of a material that meets the structural strength and is easy to process and form, specifically aluminum alloy, carbon fiber, copper alloy and other materials, without limitation. Optionally, the battery cell includes a negative electrode cell and a positive electrode cell, which are arranged alternately in sequence and isolated by a diaphragm (not shown). Optionally, the positive electrode cell can use positive electrode materials such as lithium iron phosphate, nickel-cobalt-manganese ternary materials, lithium manganate and lithium titanate as the conductive medium, without limitation. Optionally, the negative electrode cell can use negative electrode materials such as graphite, silicon compounds, lithium titanate, lithium ferric acid and lithium as the conductive medium, without limitation.

[0093] The battery provided by the utility model adopts a shell, a battery cell and a cover assembly 1000 in the embodiment of the utility model. The shell has a accommodating cavity, the battery cell is accommodated in the accommodating cavity, the cover assembly 1000 is connected to the shell and closes the accommodating cavity, and the pole 10 of the cover assembly 1000 is electrically connected to the battery cell, thereby realizing the storage and output of electric energy. At the same time, the conductive structure 100 in the cover assembly 1000 is easy to be riveted and has low deformation difficulty.

[0094] The present invention also provides an electrical equipment (not shown), including an electrical device (not shown) and a battery in an embodiment of the present invention, and the battery is suitable for supplying power to the electrical device. Optionally, the electrical equipment may be a vehicle, a household appliance, a commercial appliance, an industrial appliance, etc., without limitation. Optionally, the electrical device may be a motor, a controller, a sensor, etc., without limitation. The battery in the embodiment of the present invention realizes the storage of electrical energy and supplies power to the electrical device through the conversion between chemical energy and electrical energy. The electrical equipment realizes the storage and output of electrical energy through the electrical device and the battery in the embodiment of the present invention, and the battery is suitable for supplying power to the electrical device. At the same time, the pole 10 in the cover assembly 1000 of the battery is easy to be riveted, and the deformation difficulty is low.

[0095] In the description of the embodiments of the present invention, it should be noted that the orientation or positional relationship of terms such as "center", "up", "down", "left", "right", "vertical", "horizontal", "inside" and "outside" are based on the orientation or positional relationship described in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0096] The above disclosure is only a preferred embodiment of the present invention, and certainly cannot be used to limit the scope of rights of the present invention. Ordinary technicians in this field can understand that all or part of the processes of the above embodiment and equivalent changes made according to the claims of the present invention still fall within the scope covered by the present invention.

Claims

1. A pole (10), characterized in that: include: Subject (11); A deformation portion (12), comprising a first end surface (121) and a second end surface (122) opposite to each other, wherein the second end surface (122) is connected to the main body (11), and the deformation portion (12) is a cylindrical structure and encloses a through hole (123) penetrating the first end surface (121) and the second end surface (122); The wall thickness of the deformation portion (12) at the first end surface (121) is W1, and the wall thickness of the deformation portion (12) at the second end surface (122) is W2, satisfying: 0.9≤W1 / W2≤1.1, and the deformation portion (12) is suitable for riveting to form a flange.

2. The pole (10) according to claim 1, characterized in that: The wall thickness of the deformation portion (12) at any position between the first end surface (121) and the second end surface (122) is W3, satisfying: 0.9≤W1 / W3≤1.

1.

3. The pole (10) according to claim 1, characterized in that: The pole (10) is a rotationally symmetrical structure, and the cross-sectional shapes of the pole (10) and the through hole (123) at any position in the axial direction of the pole (10) are both circular.

4. The pole (10) according to claim 3, characterized in that: The depth of the through hole (123) is H, satisfying 0.5 mm ≤ H ≤ 2 mm.

5. The pole (10) according to claim 3, characterized in that: The main body (11) comprises a first column (111) and a second column (112), the first column (111) and the second column (112) are connected, the deformation portion (12) is connected to an end of the first column (111) away from the second column (112), and the diameter of the deformation portion (12) is the same as the diameter of the first column (111).

6. The pole (10) according to claim 5, characterized in that: The diameter of the first column (111) is A, the diameter of the through hole (123) is B, and they satisfy 1mm≤(AB)≤4mm.

7. The pole (10) according to claim 5, characterized in that: The diameter of the second column (112) is C, and satisfies 0.2 mm ≤ (CA) ≤ 2 mm.

8. The pole (10) according to any one of claims 1 to 7, characterized in that: The pole (10) is a negative pole, and the negative pole is a copper component.

9. A conductive structure (100), characterized in that: Used in a cover plate assembly (1000), the conductive structure (100) comprises a lead-out piece (20) and a pole (10) according to any one of claims 1 to 8, the lead-out piece (20) being connected to an end of the main body (11) away from the deformation portion (12).

10. The conductive structure (100) according to claim 9, characterized in that: The lead-out sheet (20) comprises a sheet body (21) and a connecting portion (22), wherein the sheet body (21) comprises a first surface (211), the connecting portion (22) is connected to the first surface (211), and the connecting portion (22) is connected to the pole (10).

11. The conductive structure (100) according to claim 9, characterized in that: The lead-out piece (20) and the pole (10) are an integrated structure.

12. A cover plate assembly (1000), characterized in that: The invention comprises a conductive member (200), a cover plate (300) and a conductive structure (100) according to any one of claims 9 to 11, wherein the conductive member (200) and the lead-out sheet (20) of the conductive structure (100) are respectively arranged on opposite sides of the thickness direction of the cover plate (300), the conductive member (200) is provided with a rivet hole (201), the cover plate (300) is provided with a first through hole (301), the rivet hole (201) and the first through hole (301) are opposite to each other, the pole (10) of the conductive structure (100) is passed through the rivet hole (201) and the first through hole (301), the deformed portion (12) of the pole (10) is a flange and is riveted to the conductive member (200).

13. The cover plate assembly (1000) according to claim 12, characterized in that: There is at least one conductive structure (100), the lead-out pieces (20) of the conductive structure (100) are connected, and the poles (10) of the conductive structure (100) are riveted to the conductive member (200).

14. The cover plate assembly (1000) according to claim 12, characterized in that: The cover plate assembly (1000) further comprises a first insulating member (400), a second insulating member (500) and a sealing ring (600); the first insulating member (400) is connected between the conductive member (200) and the cover plate (300); the second insulating member (500) is connected between the lead-out piece (20) of the conductive structure (100) and the cover plate (300); the sealing ring (600) is arranged between the cover plate (300) and the second insulating member (500), and is sleeved on the pole (10).

15. A battery, characterized in that: It comprises a shell, a battery cell and a cover assembly (1000) as described in any one of claims 12 to 14, wherein the shell has a receiving cavity, the battery cell is received in the receiving cavity, the cover assembly (1000) is connected to the shell and closes the receiving cavity, and the conductive structure (100) of the cover assembly (1000) is electrically connected to the battery cell.

16. An electrical equipment, characterized in that: The invention comprises an electric device and the battery as claimed in claim 15, wherein the battery is suitable for supplying power to the electric device.

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