CN219959068U

CN219959068U - Battery cell and power battery

Info

Publication number: CN219959068U
Application number: CN202320948767.1U
Authority: CN
Inventors: 丁坤; 张超; 王正伟; 朱华君; 孙大强; 陈梦婷
Original assignee: Phylion Battery Co Ltd
Current assignee: Phylion Battery Co Ltd
Priority date: 2023-04-24
Filing date: 2023-04-24
Publication date: 2023-11-03
Anticipated expiration: 2033-04-24

Abstract

The utility model relates to the technical field of energy batteries, in particular to an electric core and a power battery, wherein the electric core comprises: the electrode lug support is provided with a penetrating channel and an installation part, and the installation part is communicated with the penetrating channel; the electrode lug to be connected extends into the mounting part through the penetrating channel; the outer conductive connecting piece penetrates into the part to-be-connected electrode lug in the mounting part through the penetrating channel and is used for being connected with the outer conductive connecting piece. According to the battery cell provided by the embodiment of the utility model, the electrode lug support can play a role in supporting and limiting the electrode lug to be connected, so that the electrode lug to be connected is prevented from being greatly shifted, the part of the electrode lug to be connected, which is used for being connected with the outer conductive connecting piece, passes through the penetrating channel, the penetrating channel can clamp and limit the electrode lug to be connected, the stability of the electrode lug to be connected is further enhanced, and the accidents such as disconnection and the like between the electrode lug to be connected and the outer conductive connecting piece in the assembly and use processes of the battery are effectively reduced.

Description

Battery cell and power battery

Technical Field

The utility model relates to the technical field of energy batteries, in particular to an electric core and a power battery.

Background

At present, the tab of the battery electrode group is generally connected with the electrode post for external power supply in a welding mode, but due to the self characteristic of the tab, the connection strength between the tab and the electrode post is difficult to ensure, when the battery is assembled and used subsequently, the tab and the electrode post are easy to move relatively, so that the tab and the electrode post are mutually torn, welding failure occurs between the tab and the electrode post, normal operation of the battery is influenced, and safety of the battery is also influenced.

Disclosure of Invention

The utility model aims to provide an electric core and a power battery, which solve the technical problems that welding failure is easy to occur between a tab and a pole in the prior art, and disconnection is easy to occur particularly for the positive electrode of the battery.

The application provides a cell, comprising: the electrode lug support is provided with a penetrating channel and an installation part, and the installation part is communicated with the penetrating channel;

the electrode lug to be connected extends into the mounting part through the penetrating channel;

the part of the outer conductive connecting piece which penetrates into the mounting part through the penetrating channel is used for being connected with the outer conductive connecting piece.

In the above technical solution, further, the tab bracket includes:

the first bracket is long-strip-shaped;

the second bracket is in a strip shape and is detachably connected with the first bracket;

the sealing plate is connected with the first bracket and the second bracket at the same time; the sealing plate, together with the first and second brackets, define the mounting portion.

In any of the foregoing solutions, further, the first bracket includes: the device comprises a first mounting part, a first supporting part and a second supporting part, wherein the first supporting part is arranged at one end of the first mounting part, and the second supporting part is arranged at the other end of the first mounting part;

the second bracket includes: the device comprises a second installation part, a third supporting part and a fourth supporting part, wherein the third supporting part is arranged at one end of the second installation part, and the fourth supporting part is arranged at the other end of the second installation part;

the second installation parts and the first installation parts are arranged at intervals in parallel, and the penetrating channel is formed between the first installation parts and the second installation parts;

the third supporting portion is detachably connected with the first supporting portion, and the fourth supporting portion is detachably connected with the second supporting portion.

In any of the foregoing solutions, further, the first supporting portion, the second supporting portion, the third supporting portion, and the fourth supporting portion each have a first grid structure, where the first grid structure includes grid bars extending along a first direction;

the first mounting portion and the second mounting portion each have a second grid structure including grid bars extending in a second direction; the first direction and the second direction are different directions.

In any of the above technical solutions, further, the battery cell further includes a package assembly, where the package assembly includes:

the tab support is arranged at a port of the shell;

the cover plate is connected with the port of the shell so as to encapsulate the lug support in the shell;

the outer conductive connecting piece is arranged on the outer plate surface of the cover plate.

In any of the above technical solutions, further, the electrical core further includes a conductive component, where the conductive component includes:

the inner conductive connecting piece is arranged on one side of the sealing plate facing the mounting part; the to-be-connected electrode lug is arranged in the mounting part in a folding manner and comprises a conductive part, and the conductive part is attached to and connected with the inner conductive connecting piece;

the fastening connecting piece penetrates through the outer conductive connecting piece, the cover plate and the sealing plate and then is connected with the inner conductive connecting piece.

In any of the above technical solutions, further, the battery cell further includes an insulating member, a limiting groove is provided on an outer plate surface of the cover plate, and the insulating member is disposed in the limiting groove;

the insulating piece pad is arranged between the outer conductive connecting piece and the cover plate, and the thickness of the insulating piece is larger than the depth of the limiting groove.

In any of the above technical solutions, further, the electrical core further includes a sealing member, the sealing member is sleeved on the fastening connection member, and the sealing member can separate the sealing plate and the cover plate.

In any of the above technical solutions, further, a liquid injection hole and a pressure release valve are provided on the cover plate, and a sealing nail is provided on the liquid injection hole.

The utility model also provides a power battery which comprises the battery core according to any one of the technical schemes, so that the power battery has all the beneficial technical effects of the battery core, and the description is omitted here.

Compared with the prior art, the utility model has the beneficial effects that:

the battery cell provided by the utility model comprises: the electrode lug support is provided with a penetrating channel and an installation part, and the installation part is communicated with the penetrating channel; the electrode lug to be connected extends into the mounting part through the penetrating channel; the outer conductive connecting piece penetrates into the part to-be-connected electrode lug in the mounting part through the penetrating channel and is used for being connected with the outer conductive connecting piece.

According to the battery cell provided by the embodiment of the utility model, the electrode lug support can play a role in supporting and fixing the electrode lug to be connected, so that the electrode lug to be connected is prevented from being greatly shifted, the part of the electrode lug to be connected, which is used for being connected with the outer conductive connecting piece, passes through the penetrating channel, the penetrating channel can clamp and limit the electrode lug to be connected, the stability of the electrode lug to be connected is further enhanced, and the accidents such as disconnection and the like between the electrode lug to be connected and the outer conductive connecting piece in the assembly and use processes of the battery are effectively reduced.

The power battery provided by the embodiment of the utility model comprises the battery core, and the positive electrode and the negative electrode of the battery core can have the same structure and the same connection mode, so that the positive electrode and the negative electrode of the power battery provided by the embodiment of the utility model have stronger structural strength, the connection strength and stability of the tab to be connected and the external conductive connecting piece and the connection strength and stability of the tab of the negative electrode and the external conductive connecting piece can be effectively ensured, and the continuity, stability and safety of the power battery during operation are ensured.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present utility model, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural diagram of a battery cell according to an embodiment of the present utility model;

fig. 2 is a schematic diagram of a part of a structure of a battery cell according to an embodiment of the present utility model;

fig. 3 is a schematic structural diagram of an insulating member of a battery cell according to an embodiment of the present utility model;

fig. 4 is a schematic structural diagram of another portion of a battery cell according to an embodiment of the present utility model;

fig. 5 is a schematic structural diagram of a tab support of a battery cell according to an embodiment of the present utility model;

fig. 6 is another schematic structural diagram of a tab support of a battery cell according to an embodiment of the present utility model;

fig. 7 is another view of a battery cell according to an embodiment of the present utility model;

FIG. 8 is a schematic view of a portion of the structure of FIG. 7 taken along line A-A;

fig. 9 is a view of a battery cell according to an embodiment of the present utility model;

fig. 10 is a schematic view of a part of the structure of fig. 9 taken along B-B.

Reference numerals:

the novel solar cell module comprises a 1-shell, a 2-cover plate, a 201-limiting groove, a 3-outer conductive connecting piece, a 4-lug support, a 401-first support, a 4011-first mounting part, a 4012-first supporting part, a 4013-second supporting part, a 402-second support, a 4021-second mounting part, a 4022-third supporting part, a 4023-fourth supporting part, a 403-sealing plate, a 5-to-be-connected lug, a 501-bending part, a 502-conductive part, a 6-inner conductive connecting piece, a 7-fastening connecting piece, an 8-insulating piece, a 801-annular surrounding wall, a 9-sealing piece, a 10-sealing nail, an 11-relief valve, an a-penetrating channel and a b-mounting part.

Detailed Description

The following description of the embodiments of the present utility model will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the utility model are shown.

The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model.

All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

The battery cell and the power battery according to the embodiment of the utility model are described below with reference to fig. 1 to 10.

Referring to fig. 1 to 10, an embodiment of the present utility model provides a battery cell, which includes an outer conductive connecting piece 3 and a tab support 4, wherein the tab support 4 is formed with a through channel a and a mounting portion b communicating with the through channel a, a to-be-connected tab 5 of the battery cell extends from the battery cell into the mounting portion b through the through channel a after being led out, the mounting portion b can accommodate and fix the to-be-connected tab 5, and a portion of the to-be-connected tab 5 entering the mounting portion b through the through channel a is used for contacting and conducting with the outer conductive connecting piece 3, so that positive electrode of the battery cell supplies power to the outside.

Further, the tab bracket 4 includes a first bracket 401, a second bracket 402, and a sealing plate 403, where the first bracket 401 is detachably connected to the second bracket 402, and an accommodating space defined by the first bracket 401, the second bracket 402, and the sealing plate 403 together is the mounting portion b.

Specifically, the first bracket 401 has an elongated structure, the first bracket 401 includes a first bottom plate including a first support portion 4012, a first mounting portion 4011 and a second support portion 4013 arranged in order along a length direction of the first bracket 401, the first support portion 4012 is identical in structure to the second support portion 4013, the first mounting portion 4011 is disposed between the first support portion 4012 and the second support portion 4013, preferably, the first support portion 4012 and the second support portion 4013 are each in a flat plate shape, and the first support portion 4012 and the second support portion 4013 are at the same height, the first mounting portion 4011 is protruded toward the outer conductive connecting member 3 side with respect to the first support portion 4012 and the second support portion 4013, or, the first mounting portion 4011 also has a flat plate structure, but the first mounting portion 4011 is not in the same plane as the first support portion 4012 and the second support portion 4013, so that an accommodating space is formed under the first mounting portion 4011 in an assembled state. Further, the first bracket 401 further includes a first side plate, which is enclosed at two ends of the first bottom plate and a side wall surface of the first bottom plate far away from the second bracket 402.

Further, the second bracket 402 also has an elongated structure, and the length of the second bracket 402 is the same as the length of the first bracket 401. The second bracket 402 includes a second bottom plate and a second side plate, where the structure of the second bottom plate is the same as that of the first bottom plate, and includes a third support portion 4022, a second mounting portion 4021, and a fourth support portion 4023, and the structures and arrangement manners of the third support portion 4022, the second mounting portion 4021, and the fourth support portion 4023 are the same as those of the first support portion 4012, the first mounting portion 4011, and the second support portion 4013 described above, and it is fully understood by those skilled in the art that, without further description, an accommodating space is formed under the second mounting portion 4021, and an installation portion b for accommodating and fixing the tab 5 to be connected is defined by the lower spaces of the first mounting portion 4011 and the second mounting portion 4021.

Preferably, the first support portion 4012, the second support portion 4013, the third support portion 4022 and the fourth support portion 4023 all have a grid structure, which can play a role in heat dissipation, and can play a role in reducing the overall material consumption and weight of the tab bracket 4.

The first mounting portion 4011 and the second mounting portion 4021 also have a grid structure, and can also play roles of heat dissipation and weight reduction, preferably, each of the grid structures of the first support portion 4012, the second support portion 4013, the third support portion 4022 and the fourth support portion 4023 extends along a first direction, each of the grid structures of the first mounting portion 4011 and the second mounting portion 4021 extends along a second direction different from the first direction, and taking the first bracket 401 as an example, the extending direction of the grid strips in the first support portion 4012 and the second support portion 4013 is different from the extending direction of the grid strips in the first mounting portion 4011, so that the structural strength of the whole first bracket 401 can be ensured, and the second bracket 402 is the same. Preferably, the first direction is perpendicular to the second direction, the first direction is the width direction of the tab support 4, and the second direction is the length direction of the tab support 4.

Further, a first connection portion is provided on a side edge of the first support portion 4012 adjacent to the third support portion 4022, a second connection portion is provided on a position of the third support portion 4022 facing the first support portion 4012, and the first connection portion and the second connection portion can be mutually matched, so that the first support portion 4012 and the third support portion 4022 can be detachably connected, and similarly, the second support portion 4013 and the fourth support portion 4023 can be detachably connected through another set of mutually matched first connection portion and second connection portion.

Specifically, the first connection portion is specifically a groove formed on the first support portion 4012 and the second support portion 4013, the second connection portion is specifically a protrusion formed on the third support portion 4022 and the fourth support portion 4023 and capable of matching with the foregoing groove, and of course, since in one specific case, the second connection portion is a groove, the first connection portion is a protrusion capable of matching with the groove, or a groove is provided on the first support portion 4012, a protrusion is provided on the second support portion 4013, a protrusion is provided on the third support portion 4022, a groove is provided on the fourth support portion 4023, and other similar effects can be achieved, so that a deformation manner of ensuring that the first support 401 and the second support 402 can be mutually connected is not listed any more, and it should fall within the scope of the claimed utility model. The above is only one preferred embodiment for realizing the detachable connection of the first bracket 401 and the second bracket 402, and the first bracket 401 and the second bracket 402 may also be connected by welding the first support portion 4012 with the third support portion 4022, and welding the second support portion 4013 with the fourth support portion 4023.

Further, the width of the first mounting portion 4011 is smaller than the width of the first supporting portion 4012 (and the second supporting portion 4013), the width of the second mounting portion 4021 is smaller than the width of the third supporting portion 4022 (and the fourth supporting portion 4023), so that a gap is formed between the first mounting portion 4011 and the second mounting portion 4021, the gap is a through channel a, the tab 5 to be connected below the first mounting portion 4011 and the second mounting portion 4021 is threaded out of the through channel a into the mounting portion b so as to be connected and conducted with the outer conductive connecting piece 3, the tab 5 to be connected is clamped by the first mounting portion 4011 and the second mounting portion 4021 together, so that the tab 5 to be connected is clamped to be relatively fixed through the portion of the through channel a penetrating into the mounting portion b, and even if the portion of the tab 5 to be connected below the through channel a is slightly or shifted, the tab 5 to be connected is not pulled to be connected through the portion of the through channel a, so that the tab 5 to be connected is greatly moved or disconnected from the connecting piece.

Further, the first side plate and the second side plate are symmetrically arranged about a central line extending along the length direction of the tab support 4, after the first support 401 and the second support 402 are connected with each other, the first side plate and the second side plate together form an annular coaming, and the sealing plate 403 is buckled or embedded in an opening at the upper end of the annular coaming, so that a portion of the tab 5 to be connected, which is penetrated out through the penetrating channel a, is encapsulated between the sealing plate 403 and the first support 401 and the second support 402, and the tab 5 to be connected and the outer conductive connecting piece 3 are connected and conducted with each other through a conductive assembly as described below.

The first mounting portion 4011, the first supporting portion 4012, the second supporting portion 4013, and the first side plate in the first bracket 401 actually have an integral structure that is injection-molded from an insulating material, and the second bracket 402 is the same.

Further, the sealing plate 403 is in a long flat plate shape, the sealing plate 403 includes a flat plate portion and grid plate portions disposed at two ends of the flat plate portion, the flat plate portion is disposed opposite to the first mounting portion 4011 and the second mounting portion 4021, and the area of the flat plate portion is not smaller than that of the first mounting portion 4011, the areas of the grid plate portions at two ends of the flat plate portion are equal, the grid plate portions also have a grid structure, and include a plurality of grid bars disposed in parallel, preferably, the extending directions of the grid bars in the grid plate portions are perpendicular to the extending directions of the grid bars in the first supporting portion 4012 and the second supporting portion 4013. The sealing plate 403 is formed by injection molding of insulating materials, so that not only can the electrode lug 5 be connected be packaged, but also the electrode lug 5 be connected be insulated, and the electrode lug 5 to be connected is prevented from being connected with a structure and a component which do not need to be conductive.

Further, the tab 5 to be connected has a folding structure that folds along the thickness direction of the positive electrode support, the tab 5 to be connected is led out by the electrode group and then is folded to form a folding part 501, the folding part 501 continues to extend to form a sheet-shaped conductive part 502, the folding part 501 and the conductive part 502 are both located between the sealing plate 403 and the tab support 4, the conductive part 502 is used for being connected and conducted with the outer conductive connecting piece 3, the folding structure of the tab 5 to be connected enables the tab 5 to be connected to have elasticity in structure, the tab 5 to be connected enters the mounting part b through the penetrating channel a and then is packaged in the mounting part b in a slightly compressed state, the tab 5 to be connected and the conductive component can be tightly abutted, and the connection strength and stability between the tab 5 to be connected and the conductive component are ensured.

Further, this electric core still includes encapsulation subassembly, encapsulation subassembly includes shell 1 and apron 2, shell 1 cover is established and is had a section of thick bamboo structure, shell 1 cover is established in the outside of electric core, apron 2 lid is located utmost point ear support 4, preferably, the cross section of shell 1 is the rectangle, the width of first supporting part 4012 and the width sum of third supporting part 4022 are the same with the width internal diameter of shell 1, under the assembled state, first supporting part 4012, second supporting part 4013 subsides relative first installation department 4011, third supporting part 4022 and fourth supporting part 4023 subsides relative second installation department 4021, can with utmost point group intensive contact and laminating, can ensure the stability of anodal support relative electric core after accomplishing the encapsulation. This electric core is inside to be close to the opening setting of shell 1 at shell 1, and apron 2 lid are established in the opening part of shell 1 and are sealed the opening of shell 1 to encapsulate electric core and this electric core in shell 1.

Further, the sealing plate 403 of the positive electrode support is attached to the inner plate surface of the cover plate 2, preferably, the housing 1 and the cover plate 2 are made of aluminum materials, the positive electrode support can separate the to-be-connected tab 5 from the housing 1, and the sealing plate 403 can separate the to-be-connected tab 5 from the cover plate 2, so that an insulating effect is achieved, and the to-be-connected tab 5 is prevented from contacting the housing 1 and the cover plate 2 to generate electric leakage, short circuit and other conditions.

Further, the conductive assembly includes: the inner conductive connecting piece 6 and the fastening connecting piece 7, the inner conductive connecting piece 6 has a sheet structure or a flat plate structure, the inner conductive connecting piece 6 is arranged on one side of the sealing plate 403 facing the positive electrode bracket, and after the positive electrode bracket is installed, the conductive part 502 of the to-be-connected tab 5 is tightly attached to the inner conductive connecting piece 6. The electrode lug 5 to be connected and the inner conductive connecting piece 6 are mutually attached and connected, so that the connection strength is further enhanced, the stability of an external power supply process is ensured, and the connection mode between the electrode lug 5 to be connected and the inner conductive connecting piece 6 can be, but is not limited to, laser welding.

The outer conductive connecting piece 3 has a flat plate structure or a sheet structure, the outer conductive connecting piece 3 is arranged on the outer plate surface of the cover plate 2 to realize external power supply, the fastening connecting piece 7 can be a square rivet, a first penetrating hole is formed in the cover plate 2, a second penetrating hole is formed in the sealing plate 403, the second penetrating hole is communicated with the first penetrating hole, preferably, the second penetrating hole is opposite to the first penetrating hole, the fastening connecting piece sequentially penetrates through the outer conductive connecting piece 3, the first penetrating hole and the second penetrating hole from the outer plate surface of the cover plate 2 and then is riveted with the inner conductive connecting piece 6, on one hand, the outer conductive connecting piece 3 can be connected with the cover plate 2 and the inner conductive connecting piece 6 to strengthen the connection strength between the outer conductive connecting piece 3 and the inner conductive connecting piece 6, on the other hand, the fastening connecting piece 7 has conductivity and can also conduct the outer conductive connecting piece 3 and the inner conductive connecting piece 6, and accordingly, the outer conductive connecting piece 3 can realize external power supply to the outer conductive connecting piece 3.

It should be noted that, the number of the fastening connectors 7 is at least one, and preferably, in the embodiment of the present utility model, the number of the fastening connectors 7 is two, and the two fastening connectors 7 are spaced apart along the length direction of the outer conductive connector 3.

Further, this electric core still includes insulating part 8 and sealing member 9, insulating part 8 has dull and stereotyped structure or sheet structure, insulating part 8 is located between outer conductive connection spare 3 and the apron 2, and specifically, the planking face of shrouding 403 is provided with spacing groove 201, the shape of insulating part 8 and the shape looks adaptation of spacing groove 201, insulating part 8 inlays and establishes in spacing groove 201, preferably, insulating part 8 and the shape of spacing groove 201 are waist shape (or race track shape), more preferably, the thickness of insulating part 8 is greater than the degree of depth of spacing groove 201, insulating part 8 is protruding relative spacing groove 201, avoid outer conductive connection spare 3 and apron 2 contact, thereby effectively lead outward and avoid taking place short circuit or electric leakage.

The sealing element 9 may be a rubber-coated sealing ring, and the sealing element 9 is sleeved on the fastening connection element 7, and the sealing element 9 is embedded in the second penetrating hole, so that a sealing effect is achieved, and an insulating effect can be achieved between the sealing plate 403 and the cover plate 2.

Further, an annular surrounding wall 801 is formed at the edge of one side surface of the insulating member 8, which is used for being attached to the outer conductive connecting member 3, the shape of the annular surrounding wall 801 is the same as that of the outer conductive connecting member 3, the edge of the outer conductive connecting member 3 is attached to the annular surrounding wall 801, and a cavity is formed between the annular surrounding wall 801 and the outer conductive connecting member 3, so that a nail head of the fastening connecting member 7 (square rivet) can be located in the cavity, and the nail head is kept flush with the outer surface of the outer conductive connecting member 3.

Further, the cover plate 2 is also provided with a liquid injection hole and a pressure relief valve 11, and the hydraulic valve is used for releasing pressure when the pressure in the shell 1 rises. The liquid injection hole and the pressure release valve 11 are respectively positioned at two sides of the outer conductive connecting piece 3, the liquid injection hole of the pressure release valve 11 is communicated with the positive electrode support and the inner space of the shell 1 so as to inject liquid into the battery cell, electrolyte is injected into the shell 1 through the liquid injection hole during liquid injection, and the electrolyte leaks into the shell through the liquid injection hole and the grid structure on the positive electrode support. Further, the liquid injection hole is provided with a sealing nail 10 for sealing the liquid injection hole after the liquid injection is finished.

In summary, according to the battery cell provided by the embodiment of the utility model, the tab support 4 can play a role in supporting, fixing and limiting the tab 5 to be connected, so that the tab 5 to be connected is prevented from being greatly shifted, the part of the tab 5 to be connected, which is used for being connected with the outer conductive connecting piece 3, passes through the penetrating channel a, and the penetrating channel a can clamp and limit the tab 5 to be connected, so that the stability of the tab 5 to be connected is further enhanced, and accidents such as disconnection and the like between the tab 5 to be connected and the outer conductive connecting piece 3 in the process of assembling and using the battery are effectively reduced.

The embodiment of the utility model also provides a power battery, which comprises the battery core in any one of the embodiments, so that the power battery has all the beneficial technical effects of the battery core, and the description is omitted.

It should be noted that, the number of electric core is a plurality of, and each electric core has positive pole and negative pole, and positive pole and the negative pole of electric core need clearly distinguish when being connected to the outside, but to electric core itself, positive pole and negative pole can be the same in structure, consequently, the utmost point ear support 4 of this electric core and wait to connect utmost point ear 5 isotructure not only can act on the positive pole of electric core, also can be used for the negative pole of electric core according to the same setting method to can ensure that positive pole and the negative pole of this power battery all have stronger structural strength, can effectively ensure to wait to connect utmost point ear 5 and outer electrically conductive connecting piece 3, the negative pole utmost point ear and outer electrically conductive connecting piece 3's joint strength and stability, the persistence of assurance power battery during operation, stability and security.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and not for limiting the same; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the utility model.

Claims

1. A cell, comprising:

the electrode lug support is provided with a penetrating channel and an installation part, and the installation part is communicated with the penetrating channel;

2. The cell of claim 1, wherein the tab support comprises:

the first bracket is long-strip-shaped;

3. The cell of claim 2, wherein the first support comprises: the device comprises a first mounting part, a first supporting part and a second supporting part, wherein the first supporting part is arranged at one end of the first mounting part, and the second supporting part is arranged at the other end of the first mounting part;

4. The cell of claim 3, wherein the first support, the second support, the third support, and the fourth support each have a first grid structure comprising grid strips extending in a first direction;

5. The cell of claim 2, further comprising a package assembly, the package assembly comprising:

the tab support is arranged at a port of the shell;

6. The cell of claim 5, further comprising a conductive component comprising:

7. The cell of claim 5, further comprising an insulator, wherein an outer plate surface of the cover plate is provided with a limit groove, and wherein the insulator is disposed in the limit groove;

8. The cell of claim 6, further comprising a seal that is nested within the fastening connection, the seal being capable of separating the cover plate from the seal plate.

9. The cell of any one of claims 5 to 8, wherein the cover plate is provided with a fill hole and a pressure relief valve, the fill hole being provided with a sealing spike.

10. A power cell comprising the cell of any one of claims 1 to 9.