CN218731628U - Battery with a battery cell - Google Patents

Abstract

The utility model relates to a battery technology field provides a battery, include: a battery case; the battery comprises a battery cell, a battery shell and a battery cover, wherein the battery cell is arranged in the battery shell and comprises a cell main body and a first lug, and the first lug extends out from one side of the cell main body; the pole is arranged on the battery shell and connected with the first pole lug, and a riveting part is formed on one side, facing the first pole lug, of the pole; insulating part, insulating part set up between utmost point post and battery case, and one side of insulating part orientation first utmost point ear is formed with first sunkenly, and riveting portion's at least part is located first sunkenly, on guaranteeing the reliable riveting of utmost point post in insulating part's basis, also can make the insulating part realize the protection to battery case, avoids battery case to receive the pressure deformation to improve the safety in use performance of battery.

Description

Battery with a battery cell

Technical Field

The utility model relates to a battery technology field especially relates to a battery.

Background

In the related art, the battery core of the battery can be connected with the pole, and the pole is arranged on the battery shell, and due to the limitation of the connection mode of the pole and the battery shell, the pole is easy to cause the deformation of the battery shell in the connection process.

SUMMERY OF THE UTILITY MODEL

The utility model provides a battery to improve the performance of battery.

The utility model provides a battery, include:

a battery case;

the battery comprises a battery cell, a battery shell and a battery cover, wherein the battery cell is arranged in the battery shell and comprises a battery cell main body and a first electrode lug extending from one side of the battery cell main body;

the pole is arranged on the battery shell and connected with the first pole lug, and a riveting part is formed on one side, facing the first pole lug, of the pole;

the insulating part, the insulating part sets up between utmost point post and battery case, and the insulating part is formed with first sunken towards one side of first utmost point ear, and riveting portion's at least part is located first sunken.

The utility model discloses a battery of embodiment includes battery housing, electric core, utmost point post and insulating part, and electric core sets up in battery housing, and the first utmost point ear in the electric core main part is connected with utmost point post electricity, and the insulating part sets up between utmost point post and battery housing to the realization is to the insulation protection between utmost point post and the battery housing. Through being formed with first sunken in one side of insulating part orientation first utmost point ear, and utmost point post riveting process forms riveting portion to make riveting portion's at least part be located first sunken, on the basis of guaranteeing the reliable riveting of utmost point post in insulating part, also can make the insulating part realize the protection to battery case, avoid battery case to receive the pressure deformation, thereby improve the safety in use performance of battery.

Drawings

For a better understanding of the present disclosure, reference may be made to the embodiments illustrated in the following drawings. The components in the drawings are not necessarily to scale, and related elements may be omitted in order to emphasize and clearly illustrate the technical features of the present disclosure. In addition, the relevant elements or components may be arranged differently as is known in the art. Further, in the drawings, like reference characters designate the same or similar parts throughout the several views.

Wherein:

FIG. 1 is a schematic diagram of a battery shown in accordance with an exemplary embodiment;

FIG. 2 is another partially exploded schematic view of a battery according to an exemplary embodiment;

FIG. 3 is a schematic diagram illustrating a partial cross-sectional configuration of a battery according to an exemplary embodiment;

FIG. 4 is a schematic diagram illustrating a first portion of a battery from one perspective, according to an exemplary embodiment;

fig. 5 is a schematic diagram illustrating another perspective of a first portion of a battery according to an exemplary embodiment.

The reference numerals are explained below:

10. a battery case; 11. a first housing member; 12. a second housing member; 20. an electric core; 21. a cell main body; 22. a first tab; 23. a second tab; 30. a pole column; 31. riveting parts; 32. a limiting part; 33. a third recess; 34. a fourth recess; 40. an insulating member; 41. a first recess; 42. a second recess; 43. a first portion; 431. a protrusion; 44. a second portion; 45. a sealing part; 46. a reinforcing portion; 461. A first reinforcing section; 462. a second reinforcing section; 50. a first current collecting member; 60. a second current collecting member; 70. an insulating member.

Detailed Description

The technical solutions in the exemplary embodiments of the present disclosure will be clearly and completely described below with reference to the 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, unless otherwise explicitly specified or limited, the terms "first", "second", and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; the term "plurality" means two or more; the term "and/or" includes any and all combinations of one or more of the associated listed items. In particular, reference to "the" object or "an" object is also intended to mean one of many such objects possible.

The terms "connected," "secured," and the like are to be construed broadly and unless otherwise stated or indicated, and for example, "connected" may be a fixed connection, a removable connection, an integral connection, an electrical connection, or a signal connection; "connected" may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present disclosure can be understood as a specific case by a person skilled in the art.

Further, in the description of the present disclosure, it is to be understood that the directional words "upper", "lower", "inner", "outer", etc., which are described in the exemplary embodiments of the present disclosure, are described at the angles shown in the drawings, and should not be construed as limiting the exemplary embodiments of the present disclosure. It will also be understood that, in the context of a connection between one element or feature and another element(s), "on," "under," or "inside" or "outside," it can be directly connected to the other element(s) "on," "under" or "inside" or "outside," or indirectly connected to the other element(s) "on," "under" or "inside" or "outside" through intervening elements.

An embodiment of the present invention provides a battery, please refer to fig. 1 to 5, the battery includes: a battery case 10; the battery cell 20 is disposed in the battery case 10, and the battery cell 20 includes a cell main body 21 and a first tab 22 extending from one side of the cell main body 21; the electrode post 30, the electrode post 30 is arranged on the battery shell 10, the electrode post 30 is connected with the first tab 22, and a riveting part 31 is formed on one side of the electrode post 30 facing the first tab 22; and the insulating piece 40, wherein the insulating piece 40 is arranged between the pole 30 and the battery shell 10, a first recess 41 is formed on one side of the insulating piece 40 facing the first pole ear 22, and at least part of the riveting part 31 is positioned in the first recess 41.

The utility model discloses a battery of embodiment includes battery housing 10, electric core 20, utmost point post 30 and insulating part 40, and electric core 20 sets up in battery housing 10, and first utmost point ear 22 on the electric core main part 21 is connected with utmost point post 30 electricity, and insulating part 40 sets up between utmost point post 30 and battery housing 10 to the realization is to the insulation protection between utmost point post 30 and the battery housing 10. By forming the first recess 41 on the side of the insulating member 40 facing the first tab 22, and forming the riveting portion 31 in the riveting process of the terminal 30, and by making at least part of the riveting portion 31 located in the first recess 41, on the basis of ensuring reliable riveting of the terminal 30 on the insulating member 40, the insulating member 40 can also protect the battery case 10, and the battery case 10 is prevented from being deformed by pressure, so as to improve the safety use performance of the battery.

It should be noted that one end of the terminal 30 penetrates through the battery case 10 and the insulating member 40, so as to be located inside the battery case 10, and in the riveting process of the terminal 30 and the insulating member 40, the riveting portion 31 is formed at one end of the terminal 30, so that the riveting portion 31 can be reliably pressed on the insulating member 40, further, the insulating member 40 is formed with the first recess 41, and the riveting portion 31 is located in the first recess 41, the insulating member 40 can protect the battery case 10, the insulating member 40 can be prevented from being warped and deformed due to the riveting of the terminal 30, and the riveting portion 31 is prevented from occupying an excessively large height space inside the battery, that is, the problem that the riveting portion 31 and the insulating member 40 accumulate an excessively large height space is avoided.

Be formed with first through-hole on battery case 10, insulating part 40 is formed with the second through-hole, first through-hole and second through-hole are passed to the one end of utmost point post 30, utmost point post 30 is connected on insulating part 40 through turn-ups riveting process, and carry out turn-ups riveted in-process to utmost point post 30, have formed the riveting portion 31 of accomodating in first sunken 41 to this realizes the reliable connection of utmost point post 30 and insulating part 40, has guaranteed promptly that utmost point post 30 reliably is fixed in on battery case 10.

In one embodiment, the terminal post 30 and the battery case 10 may be crimped and riveted, so that the rivet portion 31 may be formed, thereby achieving a reliable connection between the terminal post 30 and the battery case 10, and after the terminal post 30 is mounted to the battery case 10, the rivet portion 31 formed by the terminal post 30 may be received in the first recess 41 of the insulating member 40 through a crimping process.

In some embodiments, it is not excluded that the terminal post 30 and the battery housing 10 may be connected by riveting, so that the formed rivet 31 is received in the first recess 41 of the insulating member 40, and the rivet 31 may be a raised structure formed during the riveting process.

In one embodiment, the post 30 may be made of a conductive material, and further, the post 30 may be made of a metal material, for example, the post 30 may be a copper post, an aluminum post, or a copper-aluminum composite post.

In one embodiment, as shown in fig. 3, a limiting portion 32 is formed on the other side of the terminal 30 away from the first tab 22, and the limiting portion 32 is pressed against the insulating member 40, so that the terminal 30 can be reliably fixed on the insulating member 40 through the riveting portion 31 and the limiting portion 32, thereby ensuring that the terminal 30 is stably fixed on the battery case 10, and avoiding the problem that the terminal 30 shakes after a long time use.

Both ends of the pole 30 can be connected to the insulating part 40 through a flanging riveting process, one part of the insulating part 40 is positioned outside the battery shell 10, and one part of the insulating part 40 is positioned inside the battery shell 10, so that in the process of flanging and riveting the pole 30, the formed riveting part 31 and the limiting part 32 are respectively pressed on the inner side and the outer side of the insulating part 40, and the pole 30 is ensured to be stably fixed on the battery shell 10 and the insulating part 40.

In one embodiment, as shown in fig. 3, a second recess 42 is formed on the other side of the insulating member 40 away from the first tab 22, and at least a part of the limiting portion 32 is located in the second recess 42, so that not only can the connection strength between the limiting portion 32 and the insulating member 40 be ensured, but also the insulating member 40 is prevented from being warped and deformed due to riveting of the terminal 30, the problem that the limiting portion 32 protrudes out of the second recess 42 to an excessive height is avoided, and the space utilization rate of the battery is improved to a certain extent.

In one embodiment, the area enclosed by the circumferential outer surface of the riveting portion 31 is smaller than the area enclosed by the circumferential outer surface of the limiting portion 32, so that on the basis of ensuring that the riveting portion 31 can be reliably fixed to the insulating member 40, the problem that the riveting portion 31 occupies a large space can be avoided, and the problem that the first recess 41 has a large volume can also be avoided, thereby ensuring the structural strength of the insulating member 40, and the limiting portion 32 can further ensure that the terminal post 30 can be reliably fixed to the battery case 10 and the insulating member 40.

The riveting portion 31 may be partially or entirely located in the first recess 41, the limiting portion 32 may be partially or entirely located in the second recess 42, an area surrounded by the circumferential outer surface of the riveting portion 31 is smaller than an area surrounded by the circumferential outer surface of the limiting portion 32, that is, an area surrounded by the side wall of the first recess 41 is smaller than an area surrounded by the side wall of the second recess 42, and the first recess 41 and the second recess 42 can avoid the problem that the insulating member 40 is warped and deformed due to riveting of the pole 30 on the basis of the fact that the riveting portion 31 and the limiting portion 32 are accommodated.

In one embodiment, as shown in fig. 3, the insulating member 40 includes: a first portion 43, at least a portion of the first portion 43 being located within the battery case 10, the first portion 43 being formed with a first recess 41; a second portion 44, at least a portion of the second portion 44 being located outside the battery case 10, the second portion 44 being formed with a second recess 42; the first portion 43 and the second portion 44 are independently arranged, so that the first portion 43 and the second portion 44 are conveniently mounted, and the first portion 43 and the second portion 44 can be reliably pressed against the riveting portion 31 and the limiting portion 32 respectively, so that the pole 30 can be reliably fixed.

At least part of the first portion 43 is located inside the battery shell 10, at least part of the second portion 44 is located outside the battery shell 10, and the riveting portion 31 and the limiting portion 32 of the pole 30 realize reliable clamping of the first portion 43, the battery shell 10 and the second portion 44, so that the pole 30 is reliably fixed on the battery shell 10.

The first portion 43 may be a plastic structure and the second portion 44 may be a plastic structure, or the first portion 43 may be a rubber structure and the second portion 44 may be a rubber structure.

In one embodiment, as shown in fig. 3, the insulating member 40 further includes a sealing portion 45, the sealing portion 45 is disposed between the terminal post 30 and the battery housing 10 and located between the first portion 43 and the second portion 44, and the sealing portion 45 can also achieve reliable sealing of the battery housing 10 on the basis of achieving insulation between the terminal post 30 and the battery housing 10, so as to avoid safety risks during use of the battery.

In one embodiment, the limiting portion 32 abuts against the sealing portion 45, so as to ensure that the sealing portion 45 is reliably fixed between the terminal post 30 and the battery housing 10, thereby ensuring that the sealing portion 45 reliably seals the battery housing 10, and avoiding the influence on the safety performance of the battery due to the change of the position of the sealing portion 45.

The sealing part 45 may be a sealing ring, and both ends of the sealing part 45 may be in contact with the first and second parts 43 and 44, respectively, or at least one end of the sealing part 45 may be spaced apart from the first and second parts 43 and 44.

In one embodiment, as shown in fig. 3 and 4, a protrusion 431 is formed on a side of the first portion 43 facing away from the first tab 22, and a top end of the protrusion 431 is higher than an inner surface of the battery case 10 where the terminal 30 is disposed and is not higher than an outer surface of the battery case 10 where the terminal 30 is disposed, so that the protrusion 431 is in contact with the sealing part 45, thereby enabling the first portion 43 to be reliably in contact with the sealing part 45, ensuring the sealing performance of the sealing part 45, and enabling the connection stability of the first portion 43 and the sealing part 45.

As shown in fig. 3 and 4, the first portion 43 is formed with a protrusion 431 having a substantially circular ring shape, at least a portion of the protrusion 431 can penetrate through the battery case 10 to reliably contact with the sealing portion 45, and the protrusion 431 enhances the structural strength of the first portion 43 to a certain extent, so as to prevent the rivet portion 31 formed during the riveting process of the terminal 30 from damaging the first portion 43.

As shown in fig. 3 and 4, a protrusion 431 and a first recess 41 are formed on opposite sides of the first portion 43, respectively, and the protrusion 431 and the first recess 41 may be disposed opposite to each other.

In one embodiment, as shown in fig. 3 and 4, a gap is formed between the insulating member 40 and the inner surface of the battery case 10 where the terminal 30 is disposed, a reinforcing portion 46 is disposed on a side of the insulating member 40 facing the battery case 10, and the reinforcing portion 46 is located in the gap and contacts with the inner surface of the battery case 10 where the terminal 30 is disposed, so that on the basis of reliable support of the insulating member 40 on the battery case 10, the reinforcing portion 46 can improve the structural strength of the insulating member 40, and prevent the terminal 30 from damaging the insulating member 40 during riveting, thereby improving reliable insulation protection of the insulating member 40 on the battery case 10 and the terminal 30.

One side of the insulating member 40 facing the battery case 10 is provided with a reinforcing part 46, the reinforcing part 46 realizes the reinforcement of the insulating member 40, and the reinforcing part 46 is in contact with the battery case 10, so that the problem of heavy weight of the insulating member 40 can be avoided on the basis of effectively supporting the battery case 10.

In one embodiment, as shown in fig. 4, the reinforcing portion 46 includes a first reinforcing segment 461, and the first reinforcing segment 461 is disposed around the first recess 41, so that the first portion 43 of the insulating member 40 can be reliably reinforced, and the problem of insufficient local strength of the first portion 43 can be avoided, so as to ensure the safety performance of the insulating member 40, and thus ensure the insulation protection of the insulating member 40.

In one embodiment, as shown in fig. 4, the reinforcement portion 46 further includes a second reinforcement segment 462, the second reinforcement segment 462 being disposed across the first reinforcement segment 461; the plurality of second reinforcing segments 462 are arranged in a crossing manner with the first reinforcing segment 461 and are arranged at intervals along the circumferential direction of the first reinforcing segment 461, so that the first part 43 of the insulating member 40 is efficiently reinforced, and the battery case 10 can be reliably supported, thereby ensuring the structural stability of the battery case 10 and avoiding the problems of deformation and the like of the battery case 10.

As shown in fig. 4, the first portion 43 is provided with a first reinforcing segment 461, the first reinforcing segment 461 is substantially a circular ring, the second reinforcing segment 462 is provided in plurality, and the plurality of second reinforcing segments 462 intersect with the first reinforcing segment 461 at intervals, so as to realize structural reinforcement of the first portion 43, and the first reinforcing segment 461 and the second reinforcing segment 462 can realize contact with the battery case 10, so as to realize effective support of the battery case 10, and avoid structural damage of the battery case 10. The first and second reinforcing segments 461 and 462 may be reinforcing ribs.

It should be noted that, in some embodiments, it is not excluded that the first portion 43, the second portion 44 and the sealing portion 45 of the insulating member 40 are integrally formed by injection molding, for example, after the pole 30 is inserted into the battery case 10, injection molding is performed between the battery case 10 and the pole 30 to form the insulating member 40, and then the pole 30 is subjected to crimping riveting to form the riveting portion 31 and the limiting portion 32.

In one embodiment, as shown in fig. 2, the battery cell 20 further includes a second tab 23, the first tab 22 and the second tab 23 extend from the same side of the cell main body 21, and the battery further includes: a first current collecting member 50, wherein the pole 30 is connected with the first pole ear 22 through the first current collecting member 50; a second current collecting member 60, through which the battery case 10 is connected to the second tab 23; the first current collecting member 50 and the second current collecting member 60 are insulated from each other, so that the battery case 10 and the electrode post 30 can be used as two electrode terminals, thereby facilitating connection between the batteries and a bus bar when the batteries are grouped.

First utmost point ear 22 and second utmost point ear 23 extend by electric core main part 21 with one side and can improve the inside whole space utilization of battery to utmost point post 30 and battery case 10 can regard as two electrode leading-out ends of battery, can make things convenient for the connection when follow-up battery is in groups, and battery case 10 area is great relatively, can guarantee to have reliable area of overflowing when the battery is in groups, with this whole charge-discharge rate of assurance battery. The first tab 22 and the second tab 23 are opposite in polarity.

In certain embodiments, it is not excluded that the first tab 22 and the second tab 23 may extend from two opposite sides of the cell body 21, and the first tab 22 and the second tab 23 may be partially electrically connected with the terminal 30 and the battery case 10.

In some embodiments, it is not excluded that the battery may include two poles, one pole may be electrically connected to the first tab 22, and the other pole may be electrically connected to the second tab 23, and the two poles may be located on the same side of the battery case 10, at which time, the first tab 22 and the second tab 23 may be formed by extending from the same side of the battery case 21, or the two poles may be located on different sides of the battery case 10, for example, the two poles may be located on opposite sides of the battery case 10, at which time, the first tab 22 and the second tab 23 may be extended from opposite sides of the battery case 21.

It should be noted that, the first tab 22 and the second tab 23 may be respectively provided in plural numbers, and as shown in fig. 2, the first tab 22 and the second tab 23 may be arranged in a staggered manner, so as to ensure the insulation performance between the first tab 22 and the second tab 23. Alternatively, the first tab 22 and the second tab 23 may be one. One of the first and second tabs 22 and 23 is a positive electrode tab, and the other is a negative electrode tab.

In one embodiment, as shown in fig. 3, a third recess 33 and a fourth recess 34 are respectively formed on two opposite sides of the pole 30, one end of the first current collecting member 50 is inserted into the third recess 33, and a welding seam formed by welding the first current collecting member 50 and the pole 30 is located in the fourth recess 34, so that the connection between the first current collecting member 50 and the pole 30 can be facilitated, the leakage of the welding seam can be avoided, the safety performance of the battery can be improved, the leakage welding seam cleaning process can be reduced, and the manufacturing efficiency of the battery can be improved to a certain extent.

The first tab 22 and the second tab 23 may be welded with the first current collecting member 50 and the second current collecting member 60, respectively, and the first current collecting member 50 and the second current collecting member 60 may be welded with the pole 30 and the battery case 10, respectively.

The first current collecting member 50 may be made of a conductive material, further, the first current collecting member 50 may be made of a metal material, and the first current collecting member 50 may be an aluminum, copper, or aluminum-copper composite structure, etc.

The second current collecting member 60 may be made of a conductive material, and further, the second current collecting member 60 may be made of a metal material, and the second current collecting member 60 may be an aluminum, copper, or aluminum-copper composite structure, etc.

In one embodiment, the distance between the bottom wall of the third recess 33 and the bottom wall of the fourth recess 34 is greater than the thickness of the battery case 10, so that it is possible to secure a certain thickness at the position where the first current collecting member 50 is welded to the post 30, thereby securing the current flowing capability between the first current collecting member 50 and the post 30.

The bottom wall of the fourth recess 34 may be higher than the outer surface of the battery case 10, so that the battery case 10 is not damaged in the process of forming the limiting portion 32 by crimping and riveting.

It is noted that in certain embodiments, it is not excluded that the first current collecting member 50 and the pole 30 may be riveted, for example, the first current collecting member 50 and the pole 30 may be connected by a rivet.

In one embodiment, as shown in fig. 2 and 3, the battery further includes an insulating member 70, and the first current collecting member 50 and the second current collecting member 60 are insulated from each other by the insulating member 70, thereby ensuring the insulating property between the first current collecting member 50 and the second current collecting member 60.

The insulating member 70 may be of a plastic construction, or alternatively, the insulating member 70 may be of a rubber construction.

In one embodiment, the battery case 10 is provided with a liquid injection hole and an explosion-proof valve, which may be located on the same side of the battery case 10, and the post 30 may be located on the opposite side of the battery case 10 from the explosion-proof valve.

In one embodiment, as shown in fig. 1 to 3, the battery case 10 includes a first case member 11 and a second case member 12, and the first case member 11 and the second case member 12 are connected to seal the battery cell 20. The first case member 11 may be formed with a receiving space, and the second case member 12 may be a cover plate. Alternatively, the first and second case members 11 and 12 may each be formed with a receiving space.

The first shell member 11 comprises steel and the second shell member 12 comprises steel. Alternatively, the first shell member 11 comprises aluminum and the second shell member 12 comprises aluminum. The first shell piece 11 may comprise a composite metal material, for example, the first shell piece 11 may comprise a copper aluminum composite material, and the second shell piece 12 may comprise a composite metal material, for example, the second shell piece 12 may comprise a copper aluminum composite material.

The first and second case members 11, 12 may be welded, or the first and second case members 11, 12 may be riveted.

It is to be understood that the battery includes a cell and an electrolyte, and a minimum unit capable of performing an electrochemical reaction such as charge/discharge. The battery cell refers to a unit formed by winding or laminating a stacking portion, wherein the stacking portion comprises a first pole piece, a partition and a second pole piece. When the first pole piece is a positive pole piece, the second pole piece is a negative pole piece. And the polarities of the first pole piece and the second pole piece can be interchanged. The first pole piece and the second pole piece are coated with active materials.

In one embodiment, the battery may be a prismatic battery, that is, the battery may be a prismatic battery, which mainly refers to a straight line whose shape is a prism, but does not strictly limit whether each edge of the prism is strictly defined, and the corner between the edges is not necessarily a right angle, and may be an arc transition.

The battery can be the lamination formula battery, and it is convenient not only to organize, and can process and obtain the longer battery of length. Specifically, the electric core is the lamination formula electric core, and the electric core has first pole piece that range upon range of each other, with first pole piece opposite second pole piece of electric property and the diaphragm piece of setting between first pole piece and second pole piece to make and pile up formation lamination formula electric core to many pairs of first pole piece and second pole piece.

Alternatively, the battery may be a wound battery, that is, a first pole piece, a second pole piece opposite to the first pole piece in electrical property, and a diaphragm sheet disposed between the first pole piece and the second pole piece are wound to obtain a wound battery core.

In one embodiment, the battery may be a cylindrical battery. The battery may be a wound battery, that is, a first pole piece, a second pole piece opposite to the first pole piece in electrical property, and a diaphragm sheet disposed between the first pole piece and the second pole piece are wound to obtain a wound battery core.

An embodiment of the utility model also provides a group battery, including foretell battery.

The utility model discloses a group battery of embodiment includes the battery, and the battery includes battery housing 10, electric core 20, utmost point post 30 and insulating part 40, and electric core 20 sets up in battery housing 10, and first utmost point ear 22 on the electric core main part 21 is connected with utmost point post 30 electricity, and insulating part 40 sets up between utmost point post 30 and battery housing 10 to the realization is to the insulation protection between utmost point post 30 and the battery housing 10. By forming the first recess 41 on the side of the insulating member 40 facing the first tab 22, and forming the riveting portion 31 in the riveting process of the terminal 30, and by making at least part of the riveting portion 31 located in the first recess 41, on the basis of ensuring that the terminal 30 is reliably riveted on the insulating member 40, the insulating member 40 can also protect the battery case 10, and the battery case 10 is prevented from being deformed by pressure, thereby improving the safety use performance of the battery pack.

In one embodiment, the battery pack is a battery module or a battery pack.

The battery module includes a plurality of batteries, and the battery can be square battery, and the battery module can also include end plate and curb plate, and end plate and curb plate are used for fixing a plurality of batteries. The battery can be a cylindrical battery, and the battery module can further comprise a bracket, and the battery can be fixed on the bracket.

The battery pack includes a plurality of batteries and a case for fixing the plurality of batteries.

It should be noted that the battery pack includes a plurality of batteries, and the plurality of batteries are disposed in the box body. Wherein, a plurality of batteries can form and install in the box behind the battery module. Or, a plurality of batteries can directly set up in the box, need not to carry out the group to a plurality of batteries promptly, utilizes the box to fix a plurality of batteries.

Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This disclosure is intended to cover any variations, uses, or adaptations of the invention 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 example embodiments be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.

It will be understood that the present disclosure is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims (13)

1. A battery, comprising:

a battery case (10);

the battery comprises a battery cell (20), wherein the battery cell (20) is arranged in the battery shell (10), and the battery cell (20) comprises a cell main body (21) and a first tab (22) extending from one side of the cell main body (21);

the electrode post (30), the electrode post (30) is arranged on the battery shell (10), the electrode post (30) is connected with the first electrode lug (22), and a riveting part (31) is formed on one side, facing the first electrode lug (22), of the electrode post (30);

the insulating part (40) is arranged between the pole (30) and the battery shell (10), a first recess (41) is formed in one side, facing the first pole lug (22), of the insulating part (40), and at least part of the riveting part (31) is located in the first recess (41).

2. The battery according to claim 1, characterized in that the pole (30) is crimped riveted to the battery housing (10).

3. The battery according to claim 1, characterized in that the other side of the pole (30) facing away from the first tab (22) is formed with a limiting part (32), and the limiting part (32) is pressed against the insulating member (40);

wherein, the other side of the insulator (40) departing from the first tab (22) is formed with a second recess (42), and at least part of the limiting part (32) is positioned in the second recess (42).

4. The battery according to claim 3, wherein the circumferential outer surface of the rivet portion (31) encloses an area smaller than that of the stopper portion (32).

5. The battery according to claim 3, wherein the insulating member (40) comprises:

a first portion (43), at least part of the first portion (43) being located within the battery case (10), the first portion (43) being formed with the first recess (41);

a second portion (44), at least part of the second portion (44) being located outside the battery case (10), the second portion (44) being formed with the second recess (42);

wherein the first portion (43) and the second portion (44) are provided independently.

6. The battery according to claim 5, wherein the insulator (40) further comprises a sealing portion (45), the sealing portion (45) being disposed between the terminal post (30) and the battery case (10) and between the first portion (43) and the second portion (44);

wherein, the limiting part (32) is pressed against the sealing part (45).

7. The battery according to claim 6, characterized in that the side of the first part (43) facing away from the first tab (22) forms a protrusion (431), the top of the protrusion (431) being higher than the inner surface of the battery case (10) provided with the pole (30) and not higher than the outer surface of the battery case (10) provided with the pole (30), so that the protrusion (431) is in contact with the sealing part (45).

8. The battery according to any one of claims 1 to 7, characterized in that the insulating member (40) has a gap with the inner surface of the battery case (10) where the electrode post (30) is provided, and the side of the insulating member (40) facing the battery case (10) is provided with a reinforcement portion (46), and the reinforcement portion (46) is located in the gap and is in contact with the inner surface of the battery case (10) where the electrode post (30) is provided.

9. The battery according to claim 8, wherein the reinforcement portion (46) includes a first reinforcement segment (461), the first reinforcement segment (461) being disposed around the first recess (41).

10. The battery according to claim 9, wherein the reinforcement portion (46) further includes a second reinforcement segment (462), the second reinforcement segment (462) being disposed across the first reinforcement segment (461);

wherein the number of the second reinforcing segments (462) is plural, and the plural second reinforcing segments (462) are arranged to intersect with the first reinforcing segment (461) and are arranged at intervals in the circumferential direction of the first reinforcing segment (461).

11. The battery of any of claims 1-7, wherein the cell (20) further comprises a second tab (23), the first tab (22) and the second tab (23) extending from the same side of the cell body (21), the battery further comprising:

a first current collecting component (50), through which the pole (30) is connected to the first tab (22);

a second current collecting member (60) through which the battery case (10) is connected with the second tab (23);

wherein the first current collecting member (50) and the second current collecting member (60) are arranged in an insulated manner.

12. The battery according to claim 11, wherein opposite sides of the pole post (30) are respectively formed with a third recess (33) and a fourth recess (34), one end of the first current collecting member (50) is inserted into the third recess (33), and a welding seam formed by welding the first current collecting member (50) and the pole post (30) is positioned in the fourth recess (34);

wherein a distance between a bottom wall of the third recess (33) and a bottom wall of the fourth recess (34) is greater than a thickness of the battery case (10).

13. The battery according to any one of claims 1 to 7, wherein the battery is a cylindrical battery.

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