CN220585453U - Battery and battery device - Google Patents

Abstract

The utility model relates to the technical field of batteries, in particular to a battery and a battery device, wherein the battery comprises a shell, a battery core and a pole assembly, the shell is provided with a containing cavity, and one end of the shell is provided with a mounting hole; the battery cell is arranged in the accommodating cavity; the electrode post assembly comprises a first electrode post and a second electrode post, wherein the first electrode post penetrates through the mounting hole and is electrically connected with the electric core, the second electrode post penetrates through the mounting hole and is electrically connected with the electric core, the first electrode post and the second electrode post are arranged in an insulating mode, the first electrode post is one of an anode electrode post and a cathode electrode post of the battery, and the second electrode post is the other one of the anode electrode post and the cathode electrode post of the battery. The first pole and the second pole are used as two electrodes of the battery, so that the problem of high insulation treatment difficulty when the battery is assembled due to electrification of the shell in the battery is solved, and the safety of the battery is improved.

Description

Battery and battery device

Technical Field

The disclosure relates to the technical field of batteries, and in particular relates to a battery and a battery device.

Background

Battery devices are often provided in electric vehicles for powering the electric vehicles. The battery device is provided with a plurality of batteries, each battery comprises a shell, an electric core and a pole, each electric core is arranged in the corresponding shell, each pole is arranged in the corresponding shell, and the corresponding shell and each pole are connected with the corresponding electric core. The housing and the post each serve as one electrode of the battery, i.e., the housing is charged in the battery. The electrified difficulty that leads to the battery insulation when the battery is in the group increases in the casing in the battery to there is the overlap joint risk that leads to the short circuit between the utmost point ear and the casing of the opposite one pole of casing in the electric core, causes the holistic security risk of battery and battery device.

It should be noted that the information disclosed in the above background section is only for enhancing understanding of the background of the present disclosure and thus may include information that does not constitute prior art known to those of ordinary skill in the art.

Disclosure of Invention

An object of the present disclosure is to provide a battery and a battery device, and further to reduce difficulty of battery insulation treatment to at least a certain extent and improve safety of the battery.

According to one aspect of the present disclosure, there is provided a battery including:

the shell is provided with a containing cavity, and one end of the shell is provided with a mounting hole;

the battery cell is arranged in the accommodating cavity;

the pole assembly comprises a first pole and a second pole, the first pole is arranged in the mounting hole in a penetrating mode and is electrically connected with the electric core, the second pole is arranged in the mounting hole in a penetrating mode and is electrically connected with the electric core, the first pole and the second pole are arranged in an insulating mode, the first pole is one of the positive pole and the negative pole of the battery, and the second pole is the other one of the positive pole and the negative pole of the battery.

The battery provided by the embodiment of the disclosure comprises a shell, a battery core and a pole column assembly, wherein the battery core is arranged in the shell, the pole column assembly comprises a first pole column and a second pole column, the first pole column and the second pole column are arranged in a penetrating mode through an insulating piece, the first pole column and the second pole column are arranged in an insulating mode, the first pole column and the second pole column are connected with the battery core respectively, the first pole column and the second pole column are used as two electrodes of the battery, the problem that the difficulty of insulating treatment is high when the battery is in a group due to the fact that the shell is electrified is solved, the problem that the risk of short circuit is caused due to the fact that overlap joint exists between a pole ear of the opposite pole of the battery core and the shell is avoided, and the safety of the battery is improved.

According to another aspect of the present disclosure, there is provided a battery device including the above battery.

The battery device that this disclosed embodiment provided includes the battery, the electric core is located in the casing in the battery, the utmost point post subassembly includes first utmost point post and second utmost point post, first utmost point post and second utmost point post wear to locate the insulating part, and first utmost point post and the insulating setting of second utmost point post, first utmost point post and second utmost point post are connected with the electric core respectively, regard as two electrodes of battery through first utmost point post and second utmost point post, the big problem of insulating processing degree of difficulty when having solved the electrified battery that leads to of casing in the battery and being in groups, and the problem of having overlap joint between the utmost point ear and the casing of the opposite pole of casing in having avoided the electric core and having led to the risk of short circuit has promoted the security of battery.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the disclosure and together with the description, serve to explain the principles of the disclosure. It will be apparent to those of ordinary skill in the art that the drawings in the following description are merely examples of the disclosure and that other drawings may be derived from them without undue effort.

Fig. 1 is a schematic view of a battery according to an exemplary embodiment of the present disclosure;

FIG. 2 is a schematic cross-sectional view of a battery provided in an exemplary embodiment of the present disclosure;

fig. 3 is a schematic view of another battery according to an exemplary embodiment of the present disclosure;

fig. 4 is a schematic structural view of a battery device according to an exemplary embodiment of the present disclosure.

Detailed Description

The technical solutions in the exemplary embodiments of the present disclosure will be clearly and completely described below with reference to the accompanying drawings in the exemplary embodiments of the present disclosure. The example embodiments described herein are for illustrative purposes only and are not intended to limit the scope of the present disclosure, and it is therefore to be understood that various modifications and changes may be made to the example embodiments without departing from the scope of the present disclosure.

In the description of the present disclosure, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance unless explicitly specified or limited otherwise; the term "plurality" refers to two or more than two; the term "and/or" includes any and all combinations of one or more of the associated listed items. In particular, references to "the/the" object or "an" object are likewise intended to mean one of a possible plurality of such objects.

Unless specified or indicated otherwise, the terms "connected," "fixed," and the like are to be construed broadly and are, for example, capable of being fixedly connected, detachably connected, or integrally connected, electrically connected, or signally connected; "coupled" may be directly coupled or indirectly coupled through intermediaries. The specific meaning of the terms in the present disclosure may be understood by those skilled in the art according to the specific circumstances.

Further, in the description of the present disclosure, it should be understood that the terms "upper", "lower", "inner", "outer", and the like, as described in the example embodiments of the present disclosure, are described with the angles shown in the drawings, and should not be construed as limiting the example embodiments of the present disclosure. It will also be understood that in the context of an element or feature being connected to another element(s) "upper," "lower," or "inner," "outer," it can be directly connected to the other element(s) "upper," "lower," or "inner," "outer," or indirectly connected to the other element(s) "upper," "lower," or "inner," "outer" via intervening elements.

The exemplary embodiment of the present disclosure first provides a battery 100, as shown in fig. 1 and 2, the battery 100 including a case 10, a battery cell 20, and a post assembly 30, the case 10 having a receiving cavity, one end of the case 10 being provided with a mounting hole; the battery cell 20 is arranged in the accommodating cavity; the pole assembly 30 includes a first pole 31 and a second pole 32, the first pole 31 is disposed through the mounting hole and electrically connected to the battery cell 20, the second pole 32 is disposed through the mounting hole and electrically connected to the battery cell 20, the first pole 31 and the second pole 32 are disposed in an insulating manner, the first pole 31 is one of the positive pole and the negative pole of the battery 100, and the second pole 32 is the other one of the positive pole and the negative pole of the battery 100.

The battery 100 provided by the embodiment of the disclosure comprises a housing 10, a battery core 20 and a pole assembly 30, wherein the battery core 20 is arranged in the housing 10, the pole assembly 30 comprises a first pole 31 and a second pole 32, the first pole 31 and the second pole 32 are respectively arranged in a penetrating manner in a mounting hole, the first pole 31 and the second pole 32 are arranged in an insulating manner, the first pole 31 and the second pole 32 are used as two electrodes of the battery 100, the problem that the insulating treatment difficulty is high when the battery 100 is grouped due to electrification of the housing 10 in the battery 100 is solved, the problem that short circuit risks are caused by overlap joint between a pole lug of the opposite pole of the battery core 20 and the housing 10 is avoided, and the safety of the battery 100 is improved.

The following will describe in detail the respective portions of the battery 100 provided by the embodiments of the present disclosure:

the case 10 is used to form the outline of the battery 100 and protect the battery cells 20 and the like within the case 10. The case 10 may include a case body 11 and a cover plate 12, one end of the case body 11 having an opening, the cover plate 12 being connected to the case body 11, and the cover plate 12 blocking the opening in the case body 11. The cover plate 12 is provided with a mounting hole, the pole assembly 30 is arranged on the cover plate 12, and the pole assembly 30 seals the mounting hole.

The shell body 11 may include an end plate 112 and a cylinder 111, where the cover plate 12 is connected to the cylinder 111, and the end plate 112 is disposed at an end of the cylinder 111 away from the cover plate 12. The cylinder 111 has a cylindrical structure with two open ends, the cover plate 12 and the bracket 112 have a flat plate structure, and the cover plate 12 and the bracket 112 respectively block the openings at the two ends of the cylinder 111.

At least one of the cover plate 12 and the end plate 112 and the cylinder 111 are formed in a split structure, for example, the cover plate 12 and the cylinder 111 are formed in a split structure, the end plate 112 and the cylinder 111 are formed in an integrated structure, and the cover plate 12 and the cylinder 111 are connected in a welding or riveting mode. Alternatively, the end plate 112 and the cylinder 111 are of a split structure, the cover plate 12 and the cylinder 111 are of an integrally formed structure, and the end plate 112 and the cylinder 111 are connected by welding or riveting. Alternatively, the end plate 112 and the cover plate 12 are both of a separate structure from the cylinder 111, and the cover plate 12 and the end plate 112 are connected to the cylinder 111 by welding or caulking.

The battery cell 20 is disposed in the housing 10, and the battery cell 20 may include a battery cell main body, a first tab and a second tab, where the first tab and the second tab extend from the battery cell main body. Illustratively, the first and second tabs extend from an end of the cell body proximate the post assembly 30. Of course, in practical applications, the first tab and the second tab may be distributed in other ways, which is not limited by the embodiment of the disclosure.

The cell 20 includes a first pole piece, a second pole piece, and a diaphragm, which are integrated into the cell 20. The first pole piece may include a positive current collector and an active material layer, the active material layer is disposed on the positive current collector, the second pole piece may include a negative current collector and a negative coating, and the negative coating is coated on the negative current collector.

By way of example, the cell 20 may be a laminated cell, the cell 20 having a first pole piece, a second pole piece, and a diaphragm sheet disposed between the first pole piece and the second pole piece stacked on top of each other such that pairs of the first pole piece and the second pole piece are stacked to form a laminated cell. Alternatively, the battery cell 20 may be a winding type battery cell, that is, a winding type battery cell is obtained by winding a first pole piece, a second pole piece, and a diaphragm sheet disposed between the first pole piece and the second pole piece.

In a possible embodiment, the battery 100 may be a cylindrical battery or an approximately cylindrical battery. On this basis, the housing 10 has a cylindrical or nearly cylindrical shape, the cover plate 12 and the end plate 112 have a disk structure, and the cylinder 111 has a cylindrical tubular structure.

Wherein, be provided with the mounting hole on apron 12, the utmost point post subassembly 30 wears to locate this mounting hole. The battery cell 20 is connected to the first and second poles 31 and 32, respectively, for example, the battery cell 20 has first and second tabs, the first tab is electrically connected to the first pole 31 (welded or connected by an adapter), and the second tab is electrically connected to the second pole 32 (welded or connected by an adapter).

It should be noted that, the first electrode 31 is one output end of the battery 100, the second electrode 32 is another output end of the battery 100, the first electrode 31, the second electrode 32 and the housing 10 are made of metal materials, for example, the material of the housing 10 may be stainless steel, aluminum, copper or nickel, and the material of the first electrode 31 and the second electrode 32 may be stainless steel, aluminum, copper or nickel. In order to avoid short circuit of the battery 100, an insulator 33 is provided between the first pole 31, the second pole 32 and the case 10. The insulating member 33 may be disposed in a mounting hole on the cover plate 12, and the first pole 31 and the second pole 32 penetrate through the insulating member 33, so that the housing 10 is insulated from the first pole 31 and the second pole 32.

In another possible embodiment, the battery 100 may be a prismatic battery, such as a quadrangular battery. On this basis, the casing 10 has a rectangular or nearly rectangular parallelepiped shape, the cover plate 12 and the end plate 112 have rectangular disk structures, and the cylinder 111 has a rectangular cylindrical structure. For example, the cylinder 111 includes a first side plate, a second side plate, a third side plate, and a fourth side plate connected in this order.

When the battery 100 is a quadrangular battery, the battery cell 20 may be an ejector-type battery cell, that is, the first tab and the second tab extend from the battery cell main body toward one surface of the pole assembly 30, and the positions of the first tab and the second tab respectively correspond to the positions of the first pole 31 and the second pole 32.

It is understood that the battery cell 20 may be a side-out type battery cell, and the first tab and the second tab are respectively led out from two sides of the battery cell body. The first tab is located between the cell body and the first side of the housing 10 and the second tab is located between the cell body and the second side of the housing 10. When the battery cell 20 is a side-out type battery cell, the first tab and the first post 31 are connected through the first connecting piece, the first connecting piece is in a right-angle structure, one side of the right angle is connected with the first tab, and the other side of the right angle is connected with the first post 31. The second lug is connected with the second post 32 through a second connecting sheet, the second connecting sheet is in a right-angle structure, one side of the right angle is connected with the second lug, and the other side of the right angle is connected with the second post 32.

The pole assembly 30 includes a first pole 31 and a second pole 32, the first pole 31 is disposed through the mounting hole and electrically connected to the battery cell 20, the second pole 32 is disposed through the mounting hole and electrically connected to the battery cell 20, the first pole 31 and the second pole 32 are disposed in an insulating manner, the first pole 31 is one of the positive pole and the negative pole of the battery 100, and the second pole 32 is the other one of the positive pole and the negative pole of the battery 100.

Further, the pole assembly 30 further includes an insulating member 33, the insulating member 33 is disposed through the mounting hole, the first pole 31 and the second pole 32 are disposed through the insulating member 33, and the insulating member 33 achieves insulation between the first pole 31 and the second pole 32. And the first and second poles 31 and 32 are provided to the same insulating member 33, so that the assembly efficiency of the battery 100 can be improved.

The insulating member 33 is provided with a first through hole through which the first pole 31 is inserted and a second through hole through which the second pole 32 is inserted. The insulating member 33 is made of an insulating material, for example, the insulating member 33 may be made of a material such as rubber, plastic, or ceramic. The first and second poles 31 and 32 are insulated by the insulator 33, and the first and second poles 31 and 32 are insulated from the case 10, so that the battery 100 is prevented from being shorted.

The first through holes and the second through holes are arranged on the insulating member 33 in a first direction with a space therebetween, the first direction being parallel to a face of the cover plate 12 away from the case main body 11 (the first direction being parallel to the cover plate 12). That is, the first through hole and the second through hole are not communicated, and a partition is provided between the first through hole and the second through hole. The first through hole and the second through hole are separated by the separation part, so that a preset distance is reserved between the first pole 31 and the second pole 32, and the insulation performance of the first pole 31 and the second pole 32 is ensured.

Optionally, a distance between the first through hole and the second through hole in the first direction (the distance is a minimum distance between the first through hole and the second through hole) is 0.3mm to 10mm. For example, the distance between the first through hole and the second through hole may be 0.3mm, 1mm, 2mm, 5mm, 10mm, or the like. On the one hand, the distance between the first through hole and the second through hole is more than or equal to 0.3mm, so that the electrical distance between the first pole 31 and the second pole 32 can be ensured, and the insulation performance of the first pole 31 and the second pole 32 is improved; on the other hand, the distance between the first through hole and the second through hole is less than or equal to 10mm, so that the area of the separation part can be effectively controlled, and the separation part is prevented from occupying excessive area on the cover plate 12.

When the cover plate 12 and the case main body 11 are of a split structure, the cover plate 12 and the case main body 11 are connected by welding. The cover plate 12 and the case main body 11 generate much heat when being welded. In order to avoid damaging the insulating member 33 by heat generated during welding, the distance between the insulating member 33 and the edge of the cover plate 12 (which is the minimum distance between the insulating member 33 and the edge of the cover plate 12) is 10mm to 18mm. For example, the distance between the insulator 33 and the edge of the cover plate 12 is 10mm, 12mm, 15mm or 18mm. On the one hand, the distance between the insulator 33 and the edge of the cover plate 12 is greater than or equal to 10mm, so that the insulator 33 can be prevented from being damaged by heat generated by the shell main body 11 and the cover plate 12, and on the other hand, the distance between the insulator 33 and the edge of the cover plate 12 is less than or equal to 18mm, so that the area of the insulator 33 can be ensured, and the area of the insulator 33 is prevented from being too small.

For example, the first electrode 31 is an anode electrode, the anode electrode is an aluminum electrode, the second electrode 32 is a cathode electrode, the area of the orthographic projection of the anode electrode is a copper electrode, the area of the orthographic projection of the first electrode 31 on the cover plate 12 is S1, the area of the orthographic projection of the second electrode 32 on the cover plate 12 is S2, and the ratio of S1 to S2 is in the range of 0.8-1.2. For example, the ratio of S1 to S2 may be 0.8, 0.9, 1 or 1.2, etc. On the one hand, the ratio of S1 to S2 is larger than or equal to 0.8, which is favorable for guaranteeing the heat dissipation of the positive electrode tab (because the heat dissipation requirement of the positive electrode tab is larger than that of the negative electrode tab) and guaranteeing the overcurrent capacity of the first electrode column 31, and on the other hand, the ratio of S1 to S2 is smaller than or equal to 1.2, so that the problem of poor overcurrent capacity of the second electrode column 32 caused by the excessively small second electrode column 32 is avoided.

The area of the cover plate 12 is S3, and the ratio of S1 to S3 is in the range of 0.05-0.5. By setting the ratio of S1 and S3 to 0.05-0.5, for example, the ratio of S1 and S3 is 0.05, 0.09, 0.2, 0.5, or the like. The volume of the first pole 31 and the second pole 32 is guaranteed, the overcurrent capacity of the first pole 31 and the second pole 32 is improved, and meanwhile the problem that the strength of the cover plate 12 is poor due to the fact that the mounting holes in the cover plate 12 are too large is avoided.

The first and second poles 31 and 32 have a height difference in the range of 0.01mm to 3mm. For example, the difference in height between the first pole 31 and the second pole 32 is 0.01mm, 0.05mm, 0.1mm, 0.8mm, 1mm, 3mm, or the like. The height of the first pole 31 is the height of the first pole 31 protruding from the cover plate 12, and the height of the second pole 32 is the height of the second pole 32 protruding from the cover plate 12. The height difference between the first and second poles 31 and 32 is 0.01mm-3mm, so that the bus bars connect adjacent cells 100.

In the pole assembly 30, the first pole 31, the second pole 32, and the insulator 33 are connected to form a unitary structure. For example, the first pole 31, the second pole 32 and the insulator 33 are connected by nano injection molding or glass sealing.

When the first pole 31, the second pole 32 and the insulating member 33 are connected by nano injection molding, nano treatment can be performed on the corresponding positions of the first pole 31 and the second pole 32, and an insulating material is injected to the nano treated positions of the first pole 31 and the second pole 32 to form the insulating member 33.

When the first pole 31, the second pole 32 and the insulating member 33 are connected by glass sealing, the insulating member 33 may include an insulating plate and sealing glass, and the sealing glass is respectively sleeved on the first pole 31 and the second pole 32, and the sealing glass connects the insulating plate with the first pole 31 and the second pole 32. On this basis, the insulating plate may be a ceramic plate.

The insulating member 33 is disposed in a mounting hole on the cover plate 12, and the insulating member 33 and the cover plate 12 are connected, for example, the insulating member 33 and the cover plate 12 may be connected by nano injection molding or glass sealing. Of course, in practical application, the insulating member 33 and the cover plate 12 may be connected by riveting or bonding.

In the embodiment of the present disclosure, as shown in fig. 3, the first and second poles 31 and 32 may have a cylindrical shape; or the first and second poles 31 and 32 may be prismatic; or the cross sections of the first pole 31 and the second pole 32 may be semicircular, and the arc surfaces of the first pole 31 and the cylindrical surfaces of the second pole 32 are disposed opposite to each other.

Further, the battery 100 provided in the embodiments of the present disclosure may further include a current collecting assembly 40, where the current collecting assembly 40 is disposed between the battery core 20 and the cover plate 12, and the current collecting assembly 40 includes a first current collecting plate, a second current collecting plate, and an insulating separator disposed between the first current collecting plate and the second current collecting plate to insulate the first current collecting plate and the second current collecting plate. The first current collecting plate is connected with the first pole 31 and the first lug, and the second current collecting plate is connected with the second pole 32 and the second lug.

The battery 100 provided by the embodiment of the disclosure comprises a housing 10, a battery core 20 and a pole assembly 30, wherein the battery core 20 is arranged in the housing 10, the pole assembly 30 comprises a first pole 31 and a second pole 32, the first pole 31 and the second pole 32 are respectively arranged in a penetrating manner in a mounting hole, the first pole 31 and the second pole 32 are arranged in an insulating manner, the first pole 31 and the second pole 32 are used as two electrodes of the battery 100, the problem that the insulating treatment difficulty is high when the battery 100 is grouped due to electrification of the housing 10 in the battery 100 is solved, the problem that short circuit risks are caused by overlap joint between a pole lug of the opposite pole of the battery core 20 and the housing 10 is avoided, and the safety of the battery 100 is improved. Further, the first pole 31 and the second pole 32 are disposed on the same insulating member 33, so as to improve the assembly efficiency of the battery 100.

The exemplary embodiments of the present disclosure also provide a battery device, as shown in fig. 4, including a battery 100.

The battery 100 comprises a shell 10, a battery cell 20 and a pole assembly 30, wherein the shell 10 is provided with a containing cavity, and one end of the shell 10 is provided with a mounting hole; the battery cell 20 is arranged in the accommodating cavity; the pole assembly 30 includes a first pole 31 and a second pole 32, the first pole 31 is disposed through the mounting hole and electrically connected to the battery cell 20, the second pole 32 is disposed through the mounting hole and electrically connected to the battery cell 20, the first pole 31 and the second pole 32 are disposed in an insulating manner, the first pole 31 is one of the positive pole and the negative pole of the battery 100, and the second pole 32 is the other one of the positive pole and the negative pole of the battery 100.

The battery device provided by the embodiment of the disclosure includes a battery 100, a battery core 20 is arranged in a housing 10 in the battery 100, a pole assembly 30 includes a first pole 31 and a second pole 32, the first pole 31 and the second pole 32 are respectively arranged in a penetrating manner in a mounting hole, the first pole 31 and the second pole 32 are arranged in an insulating manner, and the first pole 31 and the second pole 32 are used as two electrodes of the battery 100, so that the problem that the difficulty in insulating treatment is high when the battery 100 is grouped due to electrification of the housing 10 in the battery 100 is solved, and the problem that the risk of short circuit is caused due to overlap joint between a pole lug of the opposite pole of the battery core 20 to the housing 10 and the housing 10 is avoided, and the safety of the battery 100 is improved.

Further, the battery device provided in the embodiment of the present disclosure may further include a bus bar, a case 200, a cooling device, and the like, where the case 200 has a bottom plate, the battery is disposed on the bottom plate, the bus bar is disposed on a surface of the battery 100 away from the bottom plate, and the bus bar is connected with the pole. The cooling device is disposed within the case 200, and the cooling device is at least partially in contact with the battery 100.

A plurality of batteries 100 may be included in the battery device, and the plurality of batteries 100 form a battery pack. For example, when the battery 100 is a rectangular parallelepiped battery, a plurality of the batteries 100 in the battery 100 may be sequentially stacked to form a battery pack. When the battery 100 is a cylindrical battery, the battery device may further include a battery bracket, in which a plurality of accommodating recesses are provided, and the battery 100 is disposed in the accommodating recesses, and the battery bracket and the plurality of batteries 100 form a battery pack.

The cooling means may include a cold plate, which may be provided between adjacent cells 100 in the battery pack, or between the bottom plate and the battery pack, or on a side of the battery pack remote from the bottom plate. The cooling plate is provided with a cooling medium channel for conveying the cooling medium.

The case 200 may include a base plate and a frame disposed on the base plate and forming one or more battery compartments, and a battery pack disposed in the battery compartments. By way of example, the housing 200 may have a rectangular or approximately rectangular configuration. The bottom plate is rectangular flat plate structure, and the bottom plate supports the group battery. The frame can include first boundary beam, second boundary beam, third boundary beam and fourth boundary beam, and first boundary beam, second boundary beam, third boundary beam and fourth boundary beam meet from end to end in proper order and form the rectangle framework. One or more separation beams can be arranged in the frame, and the separation beams divide the space in the frame into a plurality of battery cabins. For example, a first separation beam and a second separation beam are vertically arranged in the frame, and the space in the frame is separated into four battery cabins by the first separation beam and the second separation beam.

When the battery 100 is a cylindrical battery, the battery device may further include a battery bracket, in which a plurality of accommodating recesses are provided, and the battery 100 is disposed in the accommodating recesses, and the battery bracket and the plurality of batteries 100 form a battery pack.

The bus bar is used to electrically connect two adjacent cells 100 in the battery pack, and the bus bar may include a first connection portion and a second connection portion, the first connection portion and the second connection portion being connected, and the first connection portion being connected to one of the poles of the first cell and the second connection portion being connected to one of the poles of the second cell. The first cell and the second cell are two adjacent cells 100 in the battery pack.

The battery device provided by the embodiment of the disclosure includes a battery 100, a battery core 20 is arranged in a housing 10 in the battery 100, a pole assembly 30 includes a first pole 31 and a second pole 32, the first pole 31 and the second pole 32 are respectively arranged in a penetrating manner in a mounting hole, the first pole 31 and the second pole 32 are arranged in an insulating manner, and the first pole 31 and the second pole 32 are used as two electrodes of the battery 100, so that the problem that the difficulty in insulating treatment is high when the battery 100 is grouped due to electrification of the housing 10 in the battery 100 is solved, and the problem that the risk of short circuit is caused due to overlap joint between a pole lug of the opposite pole of the battery core 20 to the housing 10 and the housing 10 is avoided, and the safety of the battery 100 is improved. Further, the first pole 31 and the second pole 32 are disposed on the same insulating member 33, so as to improve the assembly efficiency of the battery 100.

The battery device provided by the embodiment of the disclosure can be applied to an electric vehicle, and when the battery device is used for the electric vehicle, the battery device can be a battery pack which is installed on the electric vehicle and provides energy for the electric vehicle.

In practice, the battery pack may be mounted to the frame of an electric vehicle. The battery pack can be fixedly connected with the frame. Or the battery pack can be a modularized battery pack which can be detachably connected to the vehicle body, so that the battery pack is convenient to replace.

Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This application is intended to cover any adaptations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.

Claims (14)

1. A battery, the battery comprising:

the shell is provided with a containing cavity, and one end of the shell is provided with a mounting hole;

the battery cell is arranged in the accommodating cavity;

the pole assembly comprises a first pole and a second pole, the first pole is arranged in the mounting hole in a penetrating mode and is electrically connected with the electric core, the second pole is arranged in the mounting hole in a penetrating mode and is electrically connected with the electric core, the first pole and the second pole are arranged in an insulating mode, the first pole is one of the positive pole and the negative pole of the battery, and the second pole is the other one of the positive pole and the negative pole of the battery.

2. The battery of claim 1, wherein the post assembly further comprises:

the insulating piece is arranged in the mounting hole in a penetrating mode, and the first pole and the second pole are arranged in the insulating piece in a penetrating mode.

3. The battery of claim 2, wherein the housing comprises:

a case main body;

and the cover plate is connected with the shell main body, and the mounting hole is formed in the cover plate.

4. The battery of claim 3, wherein the insulator is provided with a first through hole and a second through hole, the first post is disposed through the first through hole, and the second post is disposed through the second through hole.

5. The battery according to claim 4, wherein the first through-holes and the second through-holes are arranged on the insulating member in a first direction with a space therebetween, and a distance between the first through-holes and the second through-holes is 0.3mm to 10mm, the first direction being parallel to a face of the cap plate remote from the case main body.

6. A battery as claimed in claim 3, wherein the distance between the insulating member and the edge of the cover plate is between 10mm and 18mm.

7. The battery of claim 3, wherein the first electrode post is an anode electrode post, the anode electrode post is an aluminum electrode post, the second electrode post is a cathode electrode post, the cathode electrode post is a copper electrode post, the area of the orthographic projection of the first electrode post on the cover plate is S1, the area of the orthographic projection of the second electrode post on the cover plate is S2, and the ratio of S1 to S2 is in the range of 0.8-1.2.

8. The battery of claim 7, wherein the cover has an area S3 and the ratio of S1 to S3 is in the range of 0.05 to 0.5.

9. The battery of claim 3, wherein the first and second posts have a height difference in the range of 0.01mm to 3mm.

10. The battery of claim 1, wherein the cell comprises:

a cell body;

the first electrode lug is arranged at one end of the battery cell main body, which is close to the electrode post assembly, and is electrically connected with the first electrode post;

the second lug is arranged at one end, close to the pole column assembly, of the battery cell main body, the second lug is electrically connected with the second pole column, the first lug is one of the positive pole lug and the negative pole lug, and the second lug is the other one of the positive pole lug and the negative pole lug.

11. The battery of claim 2, wherein the first post, the second post, and the insulator are connected to form a unitary structure.

12. The battery of claim 11, wherein the first post, the second post, and the insulator are connected by nano-injection molding or glass sealing.

13. The battery of any one of claims 1-12, wherein the battery is a cylindrical battery.

14. A battery device comprising a battery according to any one of claims 1-13.