CN212542629U - Conduction assembly and battery cell with same - Google Patents

Abstract

A primary object of the present invention is to provide a conductive assembly and an electrical core having the same, wherein the conductive assembly includes: the positive electrode conducting piece is used for being connected with a positive electrode pole column of the battery cell and is provided with a positive electrode output end; the negative electrode conducting piece is used for being connected with a negative electrode pole of the battery cell and is provided with a negative electrode output end; an insulating part, at least part of which is positioned between the positive electrode conducting piece and the negative electrode conducting piece, so as to insulate the positive electrode conducting piece and the negative electrode conducting piece through the insulating part, and ensure that the minimum distance between the positive electrode conducting piece and the negative electrode conducting piece reaches a preset distance; wherein, positive pole conduction piece and negative pole conduction piece are all made by conducting material. Through above-mentioned technical scheme, the problem that the apron space of electric core is not enough or the usable space of electric core reduces among the prior art has been solved.

Description

Conduction assembly and battery cell with same

Technical Field

The utility model relates to a battery field or electric automobile field particularly, relate to a conduction subassembly and electric core that has it.

Background

With the development of society and the increasing demand of people, the reserves of traditional energy sources have been at risk. Nowadays, new energy sources are vigorously developed all over the country, especially in the automobile industry.

Nowadays, more and more automobile enterprises begin to research and develop and manufacture electric automobiles, and as core components and energy sources of electric automobiles, power batteries are the focus of research at present, and meanwhile, endurance and safety performance of power batteries are also the focus of increasing attention of people.

The commonly used lithium ion power batteries are mainly classified into three types, namely soft package power batteries, square power batteries and cylindrical power batteries. The common square power battery is composed of a cover plate, an aluminum shell, a roll core and the like, wherein the cover plate mainly integrates key parts such as a positive electrode riveting aluminum block, a negative electrode riveting aluminum block, a positive electrode pole, a negative electrode pole, an explosion-proof valve, a liquid injection hole and the like.

Along with the continuous improvement of people to battery energy density requirement, square battery's casing is done more and more long, and the apron size is made littleer and more, also derives an important problem simultaneously, if anodal riveting aluminium billet and negative pole riveting aluminium billet distance are nearer, takes place the short circuit easily, consequently under the not enough condition of a apron space, can't put down simultaneously that anodal riveting aluminium billet, negative pole riveting aluminium billet, anodal utmost point post, negative pole utmost point post, explosion-proof valve, annotate key spare parts such as liquid hole.

The scheme that two cover plates with different side pole outlets exist in the prior art, the bottom surface of an aluminum shell is removed, and a cover plate is added at the position, so that the positive pole and the negative pole are respectively arranged on the two cover plates, and then enough space is obtained on the cover plates to arrange a positive pole riveting aluminum block and a negative pole riveting aluminum block in a matching mode.

Although the problem that one cover plate is insufficient in size is solved by the design of the two cover plate opposite-side pole-outgoing poles, and an application example exists, in the scheme of the two cover plate opposite-side pole-outgoing poles, the riveted aluminum block on one side occupies a part of space of the square power battery in a module, so that the available space of the battery cell is reduced, and the capacity, the energy density and the like of the battery cell are difficult to improve; in this scheme simultaneously, owing to use two apron, can make the cost increase of battery to the manufacturing process of two apron is often loaded down with trivial details in the production and the equipment of a apron.

SUMMERY OF THE UTILITY MODEL

A primary object of the present invention is to provide a conductive assembly and an electrical core having the same, so as to solve the problem that the space of the cover plate of the electrical core is not sufficient or the available space of the electrical core is reduced in the prior art.

In order to achieve the above object, according to an aspect of the present invention, there is provided a conductive assembly including: the positive electrode conducting piece is used for being connected with a positive electrode pole column of the battery cell and is provided with a positive electrode output end; the negative electrode conducting piece is used for being connected with a negative electrode pole of the battery cell and is provided with a negative electrode output end; an insulating part, at least part of which is positioned between the positive electrode conducting piece and the negative electrode conducting piece, so as to insulate the positive electrode conducting piece and the negative electrode conducting piece through the insulating part, and ensure that the minimum distance between the positive electrode conducting piece and the negative electrode conducting piece reaches a preset distance; wherein, positive pole conduction piece and negative pole conduction piece are all made by conducting material.

Further, the insulating part includes an intermediate insulating layer disposed between and connected to both the positive electrode conductive member and the negative electrode conductive member to insulate the positive electrode conductive member and the negative electrode conductive member from each other.

Further, a gap portion is formed between the positive electrode conducting piece and the negative electrode conducting piece, the middle insulating layer is located in the gap portion, and the middle insulating layer is in contact with both the positive electrode conducting piece and the negative electrode conducting piece.

Further, the positive electrode conducting piece comprises a positive electrode connecting part used for being connected with the positive electrode pole, and the positive electrode output end is connected with the positive electrode connecting part; the negative electrode conducting piece comprises a negative electrode connecting part used for being connected with the negative electrode pole, and the negative electrode output end is connected with the negative electrode connecting part; the positive electrode connecting part is integrally formed or detachably connected with the positive electrode output end; the negative electrode connecting part is integrally formed or detachably connected with the negative electrode output end.

Further, positive pole conduction spare includes anodal connecting portion, and negative pole conduction spare includes negative pole connecting portion, and the intermediate insulation layer has relative first end and the second end that sets up, and the insulating part still includes: the top coating layer is connected with the first end of the middle insulating layer, is positioned on the first sides of the positive electrode conducting piece and the negative electrode conducting piece and is connected with the positive electrode connecting part and the negative electrode connecting part; the bottom coating layer is connected with the second end of the middle insulating layer, is positioned on the second sides of the positive electrode conducting piece and the negative electrode conducting piece and is connected with the positive electrode connecting part and the negative electrode connecting part; two transition coating layers are connected through two transition coating layers between the both sides of top coating layer and bottom coating layer respectively, enclose between top coating layer, bottom coating layer and two transition coating layers and enclose into the installation cavity that supplies anodal conduction piece and negative pole conduction piece male, and the internal face and the anodal connecting portion and the negative pole connecting portion of installation cavity are all connected.

Further, be provided with the first connecting hole that supplies anodal utmost point post to pass on the anodal conduction piece, be provided with the second connecting hole that supplies negative pole post to pass on the negative pole conduction piece, insulating part still includes: two first through holes are formed in the top coating layer and are respectively opposite to the first connecting hole and the second connecting hole; and two second through holes are formed in the bottom coating layer and are opposite to the first connecting hole and the second connecting hole respectively.

According to the utility model discloses a second aspect provides an electric core, including the insulation board, its characterized in that, two post holes that are provided with on the insulation board, electric core still include: the positive pole column is arranged in one pole column hole in a penetrating manner; the cathode pole is arranged in the other pole hole in a penetrating manner; the conducting assembly is the conducting assembly, the positive pole conducting piece of the conducting assembly is connected with the positive pole post, and the negative pole conducting piece of the conducting assembly is connected with the negative pole post.

Further, the battery cell also comprises: the backup pad, the backup pad sets up between insulation board and conduction subassembly, is provided with the mounting groove that is used for installing conduction subassembly in the backup pad and is used for supplying two holes of dodging that anodal utmost point post and negative pole post passed.

Further, the insulation board is made by insulating material, is provided with isolated portion on the insulation board, and isolated portion is located between anodal utmost point post and the negative pole utmost point post to insulate between anodal utmost point post and the negative pole utmost point post.

Further, the battery cell also comprises: the positive pole insulating ring is sleeved at the positive pole head of the positive pole post and is positioned in the avoiding hole; and/or the negative pole insulating ring is sleeved at the negative pole head part of the negative pole post and is positioned in the avoiding hole.

Use the technical scheme of the utility model the conduction subassembly, through insulating part with anodal conduction piece and negative pole conduction piece compound, the at least part of insulating part is located between anodal conduction piece and the negative pole conduction piece, and anodal conduction piece and negative pole conduction piece all select conducting material to form the conduction subassembly. The conductive assembly insulates the positive and negative conductive members by the insulating portion so that a short circuit does not occur when a small predetermined distance is reached between the positive and negative conductive members. Wherein, anodal conduction piece and negative pole conduction piece are connected with anodal utmost point post and negative pole utmost point post respectively, and anodal conduction piece and negative pole conduction piece all have the output for with the output of anodal conduction piece or the negative pole conduction piece of other electric core be connected, in order to reach the output of electric core electric current. Through above-mentioned technical scheme, solved among the prior art apron with the side play utmost point post, the apron space is not enough, just, probably short circuit or two apron incorporations play utmost point post between the negative pole conducting piece, just, the negative pole conducting piece sets up on 2 apron, makes the usable space of electric core reduce, the problem of the efficiency and the energy density reduction of electric core, simultaneously, has still solved two apron incorporations and has gone out utmost point post, the complicated problem of apron assembly process.

Drawings

The accompanying drawings, which form a part of the present application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:

FIG. 1 shows a schematic structural diagram of an embodiment of a conductive assembly provided in accordance with the present application;

FIG. 2 shows a cross-sectional view of the conductive assembly of FIG. 1 taken along the A-A direction;

FIG. 3 shows a close-up view of the conductive component of FIG. 2 at B;

FIG. 4 shows a perspective cross-sectional view of the conductive assembly of FIG. 1 taken along the A-A direction;

fig. 5 shows a schematic view of the positive and negative electrode conductors of fig. 1;

FIG. 6 shows an assembled view of the conductive assembly of FIG. 1 mounted on a cover plate;

FIG. 7 shows a cross-sectional view along C-C of an assembled view of the conductive assembly of FIG. 6 with a cover plate;

fig. 8 shows a schematic structural diagram of an embodiment of a positive and negative electrode post in a cell according to the present application;

fig. 9 shows an exploded view of the conductive assembly of the cell of the present application with the support and insulating plates;

fig. 10 shows a schematic diagram of a view angle of the cells in fig. 9;

FIG. 11 shows a schematic structural view of the cover plate of FIG. 6;

fig. 12 shows a schematic structural diagram of an embodiment of a cell in the present application; and

fig. 13 is a schematic diagram showing a comparison between the structure of the cell in fig. 12 and the structure of a cell in which the two cover plates are provided with the pole and the conducting member in the prior art.

Wherein the figures include the following reference numerals:

1. a conductive component; 11. a positive electrode conductor; 111. a positive electrode connecting part; 1111. a first connection hole; 1112. a first convex surface; 112. a positive output end; 12. a negative electrode conductor; 121. a negative electrode connecting part; 1211. a second connection hole; 1212. a second convex surface; 122. a negative output end; 13. an insulating section; 131. a top cladding layer; 1311. a positive pole mark; 1312. identifying a negative electrode; 1313. a first through hole; 132. an intermediate insulating layer; 133. a bottom cladding layer; 1331. a side coating layer; 1332. a second through hole; 134. a transition coating layer; 14. a gap portion; 2. a pole column; 21. a positive pole column; 211. a positive electrode head; 212. a positive electrode base plate; 213. a positive electrode insulating ring; 22. a negative electrode post; 221. a negative electrode head; 222. a negative electrode base plate; 223. a negative electrode insulating ring; 3. a support plate; 31. avoiding holes; 32. mounting grooves; 33. an explosion-proof valve hole; 34. a liquid injection hole; 4. an explosion-proof valve; 5. an insulating plate; 51. a pole hole; 52. an insulating section; 53. a pole bottom plate groove; 54. a liquid injection through hole; 6. a battery cell pole group; 7. an electric core aluminum shell; 8. a battery cell cover plate; 100. and (5) battery cores.

Detailed Description

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

As shown in fig. 1 to 12, the present invention provides a conductive assembly, comprising: the positive electrode conducting piece 11 is used for connecting the positive electrode conducting piece 11 with the positive electrode pole 21 of the battery cell, and the positive electrode conducting piece 11 is provided with a positive electrode output end 112; the negative electrode conducting piece 12, the negative electrode conducting piece 12 is used for being connected with the negative electrode pole 22 of the battery core, and the negative electrode conducting piece 12 is provided with a negative electrode output end 122; an insulating part 13, at least a part of the insulating part 13 being located between the positive electrode conductor 11 and the negative electrode conductor 12 to insulate the positive electrode conductor 11 and the negative electrode conductor 12 by the insulating part 13 such that a minimum distance between the positive electrode conductor 11 and the negative electrode conductor 12 reaches a predetermined distance; the positive electrode conductor 11 and the negative electrode conductor 12 are made of a conductive material.

Use the technical scheme of the utility model, anodal conduction spare among the prior art and negative pole conduction spare are designed to do the utility model provides a conduction subassembly compounds anodal conduction spare and negative pole conduction spare through insulating portion, and the at least part of insulating portion is located between anodal conduction spare and the negative pole conduction spare, and anodal conduction spare and negative pole conduction spare all select conducting material to form the conduction subassembly. The conductive assembly insulates the positive electrode conductive member and the negative electrode conductive member by the insulating portion, so that a short circuit does not occur when a predetermined distance between the positive electrode conductive member and the negative electrode conductive member is within 1mm to 10 mm. Wherein, anodal conduction piece and negative pole conduction piece are connected with anodal utmost point post and negative pole utmost point post respectively, and anodal conduction piece and negative pole conduction piece all have the output for with the output of anodal conduction piece or the negative pole conduction piece of other electric core be connected, in order to reach the output of electric core electric current. Through above-mentioned technical scheme, solved among the prior art apron with the side play utmost point post, the apron space is not enough, just, probably short circuit or two apron incorporations play utmost point post between the negative pole conducting piece, just, the negative pole conducting piece sets up on two apron, makes the usable space of electric core reduce, the problem of the efficiency and the energy density reduction of electric core, simultaneously, has still solved two apron incorporations and has gone out utmost point post, the complicated problem of apron assembly process.

Optionally, the material of both the positive and negative electrode conductors comprises aluminum.

As shown in fig. 13, after the external shape and the overall dimension of the battery cell 100 are specified (i.e., the overall length H of the battery cell is preset to be a fixed value), the total height of the battery cell pole group 6 in the prior art (i.e., the solution of the two cover plates, the opposite-side terminal posts and the conducting members) is L1. When having used the utility model provides a during conduction subassembly 1, (when using conduction subassembly 1, use a battery core apron can), the total height of battery core utmost point group 6 is L2, can see from the picture, the utility model provides a height L2 of battery core utmost point group 6 is greater than the height L1 of battery core utmost point group 6 among the prior art, and its difference DeltaL is equivalent to the space that battery core 100 can improve the capacity or improve the improved design of energy density to some extent.

As shown in fig. 2, the insulating portion 13 includes an intermediate insulating layer 132, and the intermediate insulating layer 132 is disposed between the positive electrode conductor 11 and the negative electrode conductor 12 and connected to both the positive electrode conductor 11 and the negative electrode conductor 12 to insulate the positive electrode conductor 11 and the negative electrode conductor 12 from each other. Thus, even when the distance between the positive electrode lead 11 and the negative electrode lead 12 is maintained in the range of 1mm to 10mm, short circuit does not occur due to the close distance.

As shown in fig. 5, a gap 14 is formed between the positive electrode conductor 11 and the negative electrode conductor 12, the intermediate insulating layer 132 is located in the gap 14, and the intermediate insulating layer 132 is in contact with both the positive electrode conductor 11 and the negative electrode conductor 12. In this way, the intermediate insulating layer 132 insulates a portion closest to the positive and negative electrode conductors 11 and 12 to prevent a short circuit phenomenon from occurring between the positive and negative electrode conductors 11 and 12 due to a close distance.

Alternatively, the shape of the positive electrode conductor 11 is cylindrical or rectangular; and/or negative electrode conductor 12 is cylindrical or rectangular in shape; and/or the insulating part 13 is in curved surface contact or plane contact with the positive electrode conductor 11; and/or the insulation part 13 and the negative electrode conduction piece 12 are in curved surface contact or plane surface contact.

Can be according to actual application environment and service condition, with conduction subassembly 1 design for different shapes, the diversification of conduction subassembly 1's shape promptly for anodal conduction piece 11 and negative pole conduction piece 12 can be applicable to different welding condition when the module is assembled into to electric core.

The composite interface between the positive electrode conductor 11 and the negative electrode conductor 12 and the insulating part 13 is mainly a plane contact, and can be designed to be a curved surface contact or a combination of the plane contact and the curved surface contact, so as to ensure the insulation and the sealing between the positive electrode conductor 11 and the negative electrode conductor 12 and the stability of each structure of the conductive assembly 1.

As shown in fig. 2, the positive electrode conductive member 11 includes a positive electrode connection portion 111 for connecting with the positive electrode post 21, and a positive electrode output end 112 is connected with the positive electrode connection portion 111; the negative electrode conductive member 12 includes a negative electrode connection portion 121 for connection with the negative electrode post 22, and a negative electrode output end 122 connected with the negative electrode connection portion 121; wherein, the positive electrode connecting part 111 is integrally formed with or detachably connected with the positive electrode output end 112; the negative electrode connecting part 121 is integrally formed with or detachably connected to the negative electrode output terminal 122.

The utility model discloses do not regard as electric core 100 with the top of the anodal connecting portion 111 of conduction subassembly 1 and negative pole connecting portion 121 just, the output of negative pole, it is near mainly to consider the top distance of anodal connecting portion 111 and negative pole connecting portion 121, the short circuit takes place easily, so relative both ends far away apart from between anodal connecting portion 111 and negative pole connecting portion 121 extend anodal output 112 and negative pole output 122 again respectively, and carry out the rubber coating to the top of anodal connecting portion 111 and negative pole connecting portion 121, make it safer.

As shown in fig. 2, the positive output 112 and the negative output 122 extend oppositely. The extending directions of the positive output end 112 and the negative output end 122 are opposite to each other, so that when a module is formed, a plurality of battery cells are connected.

As shown in fig. 5, the positive electrode conducting member 11 is provided with a first connection hole 1111 through which the positive electrode post 21 passes, and an inner wall surface of the first connection hole 1111 is used for being connected with the positive electrode post 21; the negative electrode conductor 12 is provided with a second connection hole 1211 through which the negative electrode post 22 passes, and an inner wall surface of the second connection hole 1211 is connected to the negative electrode post 22. The positive electrode post 21 and the negative electrode post 22 pass through the first connection hole 1111 and the second connection hole 1211, respectively, from the bottom of the conduction assembly 1 to the top of the conduction assembly 1, and the heads of the positive electrode post 21 and the negative electrode post 22 are caulked from the top side of the conduction assembly 1 to form a fixed connection between the positive electrode post 21 and the negative electrode post 22 and the conduction assembly 1.

The first connection hole 1111 and the second connection hole 1211 include a through hole, a first bottom hole and a second bottom hole from bottom to top, and the heads of the positive electrode post 21 and the negative electrode post 22 include a first cylindrical portion, a second cylindrical portion and a third cylindrical portion from top to bottom.

The second cylindrical parts of the anode pole 21 and the cathode pole 22 are inserted into the through holes and penetrate out of the first bottom hole, so that the upper end face of the first cylindrical part is in contact with the lower end face of the conducting component 1, and the lower end face of the conducting component 1 serves as a ground supporting face during riveting; the third cylinder portion is formed after the riveting, and the diameter of third cylinder portion is greater than the diameter of second cylinder portion, and the lower terminal surface of third cylinder portion contacts with the bottom surface of first bottom hole, carries on spacingly through the lower terminal surface of conduction subassembly 1 and the bottom surface of first bottom hole to anodal utmost point post 21 and negative pole post 22, makes anodal utmost point post 21 and negative pole post 22 and anodal conduction piece 11 and negative pole conduction piece 12 fastening connection.

As shown in fig. 1 and 2, in particular, the positive electrode conductor 11 includes a positive electrode connection portion 111, the negative electrode conductor 12 includes a negative electrode connection portion 121, the intermediate insulating layer 132 has a first end and a second end disposed opposite to each other, and the insulating portion 13 further includes: a top coating layer 131, the top coating layer 131 being connected to a first end of the intermediate insulating layer 132, the top coating layer 131 being located on a first side of the positive electrode conductor 11 and the negative electrode conductor 12 and being connected to both the positive electrode connection part 111 and the negative electrode connection part 121; a bottom cladding layer 133, the bottom cladding layer 133 being connected to a second end of the intermediate insulating layer 132, the bottom cladding layer 133 being located on a second side of the positive electrode conductor 11 and the negative electrode conductor 12 and being connected to both the positive electrode connection part 111 and the negative electrode connection part 121; two transition coating 134, connect through two transition coating 134 between the both sides of top coating 131 and bottom coating 133 respectively, enclose between top coating 131, bottom coating 133 and two transition coating 134 and become to supply anodal conduction piece 11 and the male installation cavity of negative pole conduction piece 12, the internal face and the anodal connecting portion 111 and the negative pole connecting portion 121 of installation cavity are all connected. First side, the second side of anodal conduction piece 11 and negative pole conduction piece 12 are top and bottom respectively, and both sides will be two side parts that are connected of top and bottom, and through the aforesaid setting, the insulating part 13 of conduction subassembly 1 all carries out the cladding of certain degree to anodal conduction piece 11 negative pole conduction piece 12 top, bottom and both sides, can be in order to guarantee the insulation between anodal conduction piece 11 and the negative pole conduction piece 12, can guarantee the leakproofness between the two again.

As shown in fig. 2, the positive electrode conductor 11 is provided with a first connection hole 1111 through which the positive electrode post 21 passes, the negative electrode conductor 12 is provided with a second connection hole 1211 through which the negative electrode post 22 passes, and the insulating part 13 further includes: the top cladding layer 131 is provided with two first through holes 1313, and the two first through holes 1313 are respectively opposite to the first connection hole 1111 and the second connection hole 1211; the bottom cladding layer 133 is provided with two second through holes 1332, and the two second through holes 1332 are respectively opposite to the first connection hole 1111 and the second connection hole 1211. Thus, the heads of the positive electrode post 21 and the negative electrode post 22 respectively penetrate through the two second through holes 1332, penetrate through the first connection hole 1111 and the second connection hole 1211, and finally reach the two first through holes 1313.

As shown in fig. 2, a positive electrode mark 1311 corresponding to the positive electrode conductor 11 and a negative electrode mark 1312 corresponding to the negative electrode conductor 12 are disposed on an outer surface of the top coating layer 131 for fool-proofing, so as to solve the problem that the conductive assembly 1 is difficult to distinguish the positive and negative polarities of the battery cell through an external structure.

The positive electrode connecting part 111 has a first protruding surface 1112 protruding from the positive electrode output end 112, and the negative electrode connecting part 121 has a second protruding surface 1212 protruding from the negative electrode output end 122; the bottom cladding layer 133 includes two side cladding layers 1331, and the two side cladding layers 1331 respectively clad the first protruding surface 1112 and the second protruding surface 1212, so as to achieve the purpose of insulating the positive electrode connecting portion 111 and the negative electrode connecting portion 121 from the support plate 3.

The insulating part 13 is made of ceramic material, and the positive electrode conducting piece 11 and the negative electrode conducting piece 12 are both welded on the insulating part 13; and/or the insulating part 13 is made of plastic material, and the positive electrode conductor 11, the negative electrode conductor 12 and the insulating part 13 are integrally injection molded.

The insulating part 13 of the conductive assembly 1 is made of an insulating material for insulating the positive electrode conductive member 11 and the negative electrode conductive member 12 from each other, and the insulating part 13 is combined with the positive electrode conductive member 11 and the negative electrode conductive member 12 to form the conductive assembly 1, so that the positive electrode conductive member 11 and the negative electrode conductive member 12 are insulated from each other.

When the insulating part 13 is made of ceramic material, the insulating part 13 is welded with the positive electrode conducting piece 11 and the negative electrode conducting piece 12, and the ceramic material has the advantages of good heat conductivity, insulating property, wear resistance, heat resistance and the like, and can not be influenced when the ceramic material is used on the conducting component 1 and the pole generates heat; when the insulating part 13 is made of plastic materials (such as PP and PPs), the insulating part 13, the positive electrode conducting part 11 and the negative electrode conducting part 12 are integrally formed by injection molding, and the injection molding method has the advantages of high production efficiency, high yield, low cost, stable connection among parts, difficulty in separation and suitability for the production method of the conducting assembly 1.

As shown in fig. 6 to 10, the utility model also provides an electric core, including insulation board 5, two pole holes 51 that are provided with on insulation board 5, electric core still includes: the positive pole 21, the positive pole 21 is arranged in a pole hole 51 in a penetrating way; the cathode post 22, the cathode post 22 is arranged in the other post hole 51 in a penetrating way; the conductive assembly 1, the conductive assembly 1 is the above-mentioned conductive assembly, the positive electrode conductive member 11 of the conductive assembly 1 is connected with the positive electrode pole 21, and the negative electrode conductive member 12 of the conductive assembly 1 is connected with the negative electrode pole 22.

The electric core further comprises: the supporting plate 3, the supporting plate 3 sets up between insulation board 5 and conduction subassembly 1, is provided with the mounting groove 32 that is used for installing conduction subassembly 1 and is used for supplying two holes of dodging 31 that anodal utmost point post 21 and negative pole post 22 passed on the supporting plate 3. Wherein, the supporting plate 3 is a smooth aluminum sheet.

The insulating plate 5 is made by insulating material, is provided with isolated portion 52 on the insulating plate 5, and isolated portion 52 is located between anodal utmost point post 21 and the negative pole utmost point post 22 for insulate between anodal utmost point post 21 and the negative pole utmost point post 22. In this way, the positive electrode terminal 21 and the negative electrode terminal 22 can be simultaneously arranged on one cell cover 8 at a small distance without short-circuiting.

The positive electrode post 21 includes a positive electrode base plate 212, and the negative electrode post 22 includes a negative electrode base plate 222, and the insulating plate 5 is further provided with a post base plate groove 53 for placing the positive electrode base plate 212 of the positive electrode post 21 and the negative electrode base plate 222 of the negative electrode post 22.

The conducting assembly 1, the composite pole post 2, the support plate 3, the explosion-proof valve 4 and the insulating plate 5 jointly form a battery cell cover plate 8 of the battery cell 100, wherein the support plate 3 is provided with an explosion-proof valve hole 33 for installing the explosion-proof valve 4 and a liquid injection hole 34 for injecting electrolyte into the battery cell 100; the insulating plate 5 is provided with a avoiding hole during liquid injection, namely a liquid injection through hole 54.

As shown in fig. 7 and 9, the positive electrode insulating ring 213 is sleeved on the positive electrode head 211 of the positive electrode post 21, and the positive electrode insulating ring 213 is located in the avoiding hole 31; and/or the negative electrode insulating ring 223, the negative electrode insulating ring 223 is sleeved on the negative electrode head part 221 of the negative electrode pole 22, and the negative electrode insulating ring 223 is positioned in the avoidance hole 31. In this way, the positive electrode terminal 21 and the negative electrode terminal 22 can be insulated from the support plate 3, and the positive electrode terminal 21 and the negative electrode terminal 22 can be prevented from short-circuiting due to contact with the support plate 3.

Specifically, the bottom end surfaces of the positive insulating ring 213 and the negative insulating ring 223 are respectively in contact with the upper end surfaces of the positive base plate 212 and the negative base plate 222, the top end surfaces of the positive insulating ring 213 and the negative insulating ring 223 are respectively in contact with the lower end surfaces of the positive conducting piece 11 and the negative conducting piece 12, the inner circumferential surfaces of the positive insulating ring 213 and the negative insulating ring 223 are respectively in contact with the third cylindrical surfaces of the positive head 211 and the negative head 221, the outer circumferential surfaces of the positive insulating ring 213 and the negative insulating ring 223 are sequentially arranged in the second through hole 1332, the avoiding hole 31 and the pole hole 51 from top to bottom, wherein two first outer circumferential surfaces respectively keep a gap with the inner circumferential surfaces of the two avoiding holes 31 and the two second through holes 1332, and two second outer circumferential surfaces respectively contact with the inner circumferential surfaces of the two avoiding holes 31 and the two pole holes 51 to achieve insulation between the positive pole 21 and the negative pole 22 and the support plate 3, and sealing the relief hole 31 of the support plate 3 and the post hole 51 of the insulating plate 5, preventing the electrolyte from leaking therefrom.

In addition, as shown in fig. 10, the battery cell 100 further includes a battery cell pole group 6 and a battery cell aluminum casing 7, where the battery cell pole group 6 is disposed in a space surrounded by the battery cell aluminum casing 7 and the battery cell cover plate 8.

Use the technical scheme of the utility model the conduction subassembly 1, through insulating part 13 with anodal conduction piece 11 and negative pole conduction piece 12 compound, insulating part 13 at least part is located between anodal conduction piece 11 and the negative pole conduction piece 12, and anodal conduction piece 11 and negative pole conduction piece 12 all select conducting material to form conduction subassembly 1. The conductive assembly 1 insulates the positive electrode conductive member 11 and the negative electrode conductive member 12 by an insulating portion so that a short circuit does not occur even when a predetermined distance between the positive electrode conductive member 11 and the negative electrode conductive member 12 is in a range of 1mm to 10 mm. The positive electrode conducting piece 11 and the negative electrode conducting piece 12 are respectively connected with the positive electrode pole 21 and the negative electrode pole 22, and the positive electrode conducting piece 11 and the negative electrode conducting piece 12 both have output ends for being connected with the output ends of the positive electrode conducting piece 11 or the negative electrode conducting piece 12 of another battery cell 100 so as to output the current of the battery cell 100.

Through above-mentioned technical scheme, solved among the prior art one apron with the side play utmost point post, the apron space is not enough, just, probably short circuit or two apron incorporations play utmost point post between the negative pole conducting piece, just, the negative pole conducting piece sets up on 2 apron, makes electric core 100's usable space reduce, the problem that electric core 100's efficiency and energy density reduced, simultaneously, has still solved two apron incorporations and has gone out utmost point post, the complicated problem of apron assembly process.

From the above description, it can be seen that, the utility model provides a technical scheme has realized increasing the effective utilization space of electric core 100 and then has improved the energy density of electric core 100, reduces the manufacturing cost of electric core 100, outside optimizing the assembly process of electric core apron 8, and can not influence the other tests of electric core and the technological effect of performance. Based on the above advantage, the utility model discloses a conduction subassembly 1 compares in prior art homonymy play utmost point post, and anodal conduction piece 11 and negative pole conduction piece 12 divide to live in the structure at an apron both ends and two apron heteronymy play utmost point posts and the structural design of conduction piece have the practicality more.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. A conductive assembly, comprising:

the positive electrode conducting piece (11), the positive electrode conducting piece (11) is used for being connected with a positive electrode pole (21) of the battery core, and the positive electrode conducting piece (11) is provided with a positive electrode output end (112);

the negative pole conducting piece (12), the negative pole conducting piece (12) is used for being connected with a negative pole post (22) of the battery core, and the negative pole conducting piece (12) is provided with a negative pole output end (122);

an insulating part (13), at least a portion of the insulating part (13) being located between the positive electrode conductor (11) and the negative electrode conductor (12) to insulate the positive electrode conductor (11) and the negative electrode conductor (12) by the insulating part (13) such that a minimum distance between the positive electrode conductor (11) and the negative electrode conductor (12) reaches a predetermined distance;

wherein the positive electrode conductor (11) and the negative electrode conductor (12) are both made of an electrically conductive material.

2. The conductive assembly according to claim 1, characterized in that the insulating portion (13) comprises an intermediate insulating layer (132), the intermediate insulating layer (132) being disposed between the positive conductive piece (11) and the negative conductive piece (12) and being connected to both the positive conductive piece (11) and the negative conductive piece (12) to insulate the positive conductive piece (11) and the negative conductive piece (12) from each other.

3. The conductive assembly of claim 2, wherein a gap portion (14) is formed between the positive conductive piece (11) and the negative conductive piece (12), the intermediate insulating layer (132) is located within the gap portion (14), and the intermediate insulating layer (132) is in contact with both the positive conductive piece (11) and the negative conductive piece (12).

4. The conduction assembly according to claim 1, wherein the positive electrode conductive member (11) comprises a positive electrode connection portion (111) for connection with the positive electrode post (21), the positive electrode output end (112) being connected with the positive electrode connection portion (111); the negative electrode conducting piece (12) comprises a negative electrode connecting part (121) used for being connected with a negative electrode pole post (22), and the negative electrode output end (122) is connected with the negative electrode connecting part (121);

wherein the positive electrode connecting part (111) is integrally formed with or detachably connected with the positive electrode output end (112); the negative electrode connecting part (121) and the negative electrode output end (122) are integrally formed or detachably connected.

5. The conductive assembly of claim 2, wherein the positive conductive member (11) includes a positive connection portion (111), the negative conductive member (12) includes a negative connection portion (121), the intermediate insulating layer (132) has first and second ends disposed opposite each other, and the insulating portion (13) further includes:

a top cladding layer (131), the top cladding layer (131) being connected to a first end of the intermediate insulating layer (132), the top cladding layer (131) being located on a first side of the positive conductor (11) and the negative conductor (12) and being connected to both the positive connection part (111) and the negative connection part (121);

a bottom cladding layer (133), the bottom cladding layer (133) being connected to a second end of the intermediate insulating layer (132), the bottom cladding layer (133) being located on a second side of the positive conductor (11) and the negative conductor (12) and being connected to both the positive connection portion (111) and the negative connection portion (121);

the cathode conductive element comprises two transition coating layers (134), the top coating layer (131) is connected with the two sides of the bottom coating layer (133) through the two transition coating layers (134), an installation cavity for inserting the cathode conductive element (11) and the anode conductive element (12) is formed by enclosing the top coating layer (131), the bottom coating layer (133) and the two transition coating layers (134), and the inner wall surface of the installation cavity is connected with the cathode connecting part (111) and the anode connecting part (121).

6. The conduction assembly as claimed in claim 5, wherein the positive electrode conduction member (11) is provided with a first connection hole (1111) for passing the positive electrode post (21), the negative electrode conduction member (12) is provided with a second connection hole (1211) for passing the negative electrode post (22), and the insulation part (13) further comprises:

two first through holes (1313) are formed in the top cover layer (131), and the two first through holes (1313) are respectively opposite to the first connection hole (1111) and the second connection hole (1211);

two second through holes (1332) are formed in the bottom coating layer (133), and the two second through holes (1332) are respectively opposite to the first connecting hole (1111) and the second connecting hole (1211).

7. An electric core, comprising an insulating plate (5), characterized in that two pole holes (51) are provided on the insulating plate (5), the electric core further comprising:

the positive pole post (21), the positive pole post (21) is arranged in one pole post hole (51) in a penetrating way;

the cathode pole (22), the cathode pole (22) is arranged in the other pole hole (51) in a penetrating way;

-a conductive assembly (1), the conductive assembly (1) being according to any one of claims 1 to 6, the positive conductive piece (11) of the conductive assembly (1) being connected with the positive pole post (21), the negative conductive piece (12) of the conductive assembly (1) being connected with the negative pole post (22).

8. The cell of claim 7, further comprising:

backup pad (3), backup pad (3) set up in insulation board (5) with between the conduction subassembly (1), be provided with on backup pad (3) and be used for the installation mounting groove (32) of conduction subassembly (1) with be used for the confession anodal utmost point post (21) with two holes of dodging (31) that negative pole post (22) passed.

9. The battery cell of claim 7, wherein the insulating plate (5) is made of an insulating material, and an insulating portion (52) is disposed on the insulating plate (5), wherein the insulating portion (52) is located between the positive electrode post (21) and the negative electrode post (22) to insulate the positive electrode post (21) and the negative electrode post (22).

10. The cell of claim 8, further comprising:

the positive pole insulating ring (213), the positive pole head (211) of the positive pole post (21) is sleeved with the positive pole insulating ring (213), and the positive pole insulating ring (213) is positioned in the avoiding hole (31); and/or

The negative pole insulating ring (223), negative pole insulating ring (223) cover is established negative pole head (221) of negative pole post (22), negative pole insulating ring (223) are located in dodging hole (31).

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