CN218827722U - Battery with a battery cell - Google Patents

Abstract

The utility model relates to a battery technology field provides a battery, include: a first cell including a first pole ear portion; a second cell comprising a second pole ear; the pole component is electrically connected with the first pole ear part and the second pole ear part simultaneously; a first insulating film provided on the first tab portion; a second insulating film provided at the second electrode ear portion; the first insulating film and the second insulating film are arranged in a split mode, the first insulating film can be conveniently arranged on the first pole ear part, the second insulating film is arranged on the second pole ear part, even if the first pole ear part and the second pole ear part have installation position deviation or have position deviation when the alignment degree is not high, the first insulating film and the second insulating film can also effectively protect the first pole ear part and the second pole ear part, the risk of insulation failure of the first pole ear part and the second pole ear part is avoided, and therefore the safety use performance of the battery is improved.

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 correlation technique, be provided with electric core in the battery case, utmost point ear on the electric core can be connected with utmost point post subassembly, because utmost point ear itself is the electric conductor, appears the problem that utmost point ear exposes easily, causes insulating risk from this.

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 first cell comprising a first tab portion;

a second cell comprising a second pole ear;

the pole component is electrically connected with the first pole lug part and the second pole lug part simultaneously;

a first insulating film disposed on the first pole ear portion;

a second insulating film provided at the second electrode ear portion;

wherein the first insulating film and the second insulating film are provided separately.

The utility model discloses the battery of embodiment includes first electric core, the second electric core, utmost point post subassembly, first insulating film and second insulating film, utmost point post subassembly is connected with first utmost point ear and second utmost point ear electricity simultaneously, first electric core includes first utmost point ear, the second electric core includes second utmost point ear, first insulating film sets up in first utmost point ear, the second insulating film sets up in second utmost point ear, thereby can make first insulating film and second insulating film realize the insulation protection to first utmost point ear and second utmost point ear respectively, through making first insulating film and second insulating film components of a whole that can function independently set up, not only can make things convenient for first insulating film to set up in first utmost point ear, the second insulating film sets up in second utmost point ear, and even there is the position deviation when first utmost point ear and second utmost point ear appear the mounted position deviation or the alignment degree is not high, first insulating film and second insulating film also can effectively protect first utmost point ear and second utmost point ear, avoid first utmost point ear and second utmost point ear to appear the risk of insulation inefficacy, thereby improve the safety 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 a schematic diagram illustrating the internal structure of a battery according to an exemplary embodiment;

FIG. 3 is a schematic diagram illustrating one perspective of a battery according to an exemplary embodiment;

fig. 4 is a partial structural schematic view of a battery according to the first exemplary embodiment;

fig. 5 is a schematic view showing a partial structure of a battery according to a second exemplary embodiment;

fig. 6 is a partial structural view of a battery according to a third exemplary embodiment.

The reference numerals are explained below:

10. a first cell; 11. a first pole ear portion; 12. a first cell body; 20. a second cell; 21. a second pole ear; 22. a second cell body; 30. a pole assembly; 40. a first insulating film; 50. a second insulating film; 60. a patch; 70. a battery case; 80. a third insulating film.

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 encompass, for example, 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 or elements "on," "under," or "inner" or "outer," it can be connected not only directly to the other element or elements "on," "under," or "inner" or "outer," but also indirectly to the other element or elements "on," "under," or "inner" or "outer" through intervening elements.

An embodiment of the present invention provides a battery, please refer to fig. 1 to 6, the battery includes: a first cell 10, the first cell 10 including a first tab portion 11; a second cell 20, the second cell 20 including a second pole ear portion 21; the pole assembly 30, the pole assembly 30 is electrically connected with the first pole ear part 11 and the second pole ear part 21 at the same time; a first insulating film 40, the first insulating film 40 being provided to the first lug part 11; a second insulating film 50, the second insulating film 50 being provided at the second pole ear portion 21; the first insulating film 40 and the second insulating film 50 are provided separately.

The utility model discloses a battery of an embodiment includes first electric core 10, second electric core 20, utmost point post subassembly 30, first insulating film 40 and second insulating film 50, utmost point post subassembly 30 is simultaneously connected with first utmost point ear 11 and second utmost point ear 21 electricity, first electric core 10 includes first utmost point ear 11, second electric core 20 includes second utmost point ear 21, first insulating film 40 sets up in first utmost point ear 11, second insulating film 50 sets up in second utmost point ear 21, thereby can make first insulating film 40 and second insulating film 50 realize the insulation protection to first utmost point ear 11 and second utmost point ear 21 respectively, through making first insulating film 40 and second insulating film 50 components of a whole that can function independently set up, not only can make things convenient for first insulating film 40 to set up in first utmost point ear 11, second insulating film 50 sets up in second utmost point ear 21, and even first utmost point ear 11 and second utmost point ear 21 appear the mounting position deviation or the alignment degree when not high, first insulating film 40 and second insulating film 50 also can effectively protect first utmost point ear 11 and second utmost point ear 21, avoid first utmost point ear 11 and second utmost point ear 21 to appear the insulating film to fail, thereby improve the safety performance of battery.

It should be noted that, the first pole ear 11 of the first battery cell 10 and the second pole ear 21 of the second battery cell 20 may share one pole assembly 30, and the first pole ear 11 and the second pole ear 21 may be stacked up and down, or the first pole ear 11 and the second pole ear 21 may be butted left and right, or the first pole ear 11 and the second pole ear 21 may be spaced left and right, in which case, problems such as misalignment between the first pole ear 11 and the second pole ear 21 are not excluded, and further, by providing the first insulating film 40 and the second insulating film 50 separately, the first insulating film 40 and the second insulating film 50 may effectively cover the first pole ear 11 and the second pole ear 21, so as to avoid the problem of misalignment between the first insulating film 40 and the second insulating film 50, thereby ensuring that the first insulating film 40 and the second insulating film 50 achieve insulation protection of the first pole ear 11 and the second pole ear 21, and avoiding the risk of short circuit between the first pole ear 11 and the second pole ear 21 and other structures.

In one embodiment, as shown in fig. 2 and 6, the first insulative film 40 is disposed on a side of the first pole ear portion 11 facing the pole assembly 30, and the second insulative film 50 is disposed on a side of the second pole ear portion 21 facing the pole assembly 30, where the first insulative film 40 and the second insulative film 50 can achieve the bunching protection of the first pole ear portion 11 and the second pole ear portion 21, and can also avoid the risk of short circuit between the first pole ear portion 11 and the second pole ear portion 21 and the battery case 70, thereby improving the safety performance of the battery.

The first and second pole ear portions 11 and 21 may each be formed of at least two single tab pieces, and the first and second insulating films 40 and 50 may be used to achieve bundling of the single tab pieces, thereby improving bundling ability of the single tab pieces.

In one embodiment, as shown in fig. 4 and 5, the first insulating film 40 is disposed on a side of the first pole ear portion 11 away from the pole post assembly 30, and the second insulating film 50 is disposed on a side of the second pole ear portion 21 away from the pole post assembly 30, where the first insulating film 40 and the second insulating film 50 can achieve beam-shrinking protection for the first pole ear portion 11 and the second pole ear portion 21, and can also avoid the first pole ear portion 11 and the second pole ear portion 21 from being inserted into the first battery cell 10 and the second battery cell 20 to cause a short-circuit risk, so as to improve the safety performance of the battery.

In one embodiment, as shown in fig. 4 to 6, the first insulating film 40 and the second insulating film 50 are disposed at an interval, and on the basis of ensuring that the first insulating film 40 and the second insulating film 50 respectively perform insulation protection on the first pole ear portion 11 and the second pole ear portion 21, the problem that the first insulating film 40 and the second insulating film 50 are too large in size can be avoided, so as to improve the energy density of the battery.

In one embodiment, the first insulating film 40 is abutted against the second insulating film 50, so that the first insulating film 40 and the second insulating film 50 can effectively cover the first pole ear part 11 and the second pole ear part 21, the insulation protection of the first pole ear part 11 and the second pole ear part 21 is fully realized, and the safety use performance of the battery is improved.

In one embodiment, the first insulating film 40 overlaps the second insulating film 50, and on the basis of effectively realizing the insulation protection of the first pole ear portion 11 and the second pole ear portion 21, a fixed connection can be formed between the first insulating film 40 and the second insulating film 50, so that the stability of the first insulating film 40 and the second insulating film 50 is increased, and the safety use performance of the battery is improved.

In one embodiment, the width of the first insulative film 40 is greater than the width of the first pole ear 11 in the direction perpendicular to the lead-out direction of the first pole ear 11, and/or the width of the second insulative film 50 is greater than the width of the second pole ear 21 in the direction perpendicular to the lead-out direction of the second pole ear 21, so that the first insulative film 40 and the second insulative film 50 can reliably cover the width portions of the first pole ear 11 and the second pole ear 21, thereby ensuring the insulating capability of the first pole ear 11 and the second pole ear 21, and also enabling the first insulative film 40 and the second insulative film 50 to reliably bind the first pole ear 11 and the second pole ear 21, thereby improving the safety performance of the battery.

The lead-out direction of first pole lug 11 can be regarded as the extending direction of first pole lug 11 after first pole lug 11 is straightened, and correspondingly, the lead-out direction of second pole lug 21 can be regarded as the extending direction of second pole lug 21 after second pole lug 21 is straightened.

In one embodiment, the difference between the width of the first insulating film 40 and the width of the first lug part 11 is 2mm to 30mm, which not only can realize reliable coverage of the first lug part 11 by the first insulating film 40, but also can avoid the problem that the first insulating film 40 is too large in width to cause excessive weight or material waste.

The difference between the width of the first insulating film 40 and the width of the first pole ear portion 11 may be 2mm, 2.5mm, 3mm, 3.5mm, 4mm, 4.5mm, 5mm, 5.5mm, 6mm, 7mm, 8mm, 8.5mm, 9mm, 9.5mm, 10mm, 10.5mm, 11mm, 12mm, 13mm, 15mm, 18mm, 20mm, 21mm, 22mm, 23mm, 24mm, 24.5mm, 25mm, 26mm, 27mm, 28mm, 29mm, 30mm, or the like.

In one embodiment, the difference between the width of the second insulating film 50 and the width of the second pole ear portion 21 is 2mm to 30mm, which not only can realize reliable coverage of the second pole ear portion 21 by the second insulating film 50, but also can avoid the problem of excessive weight or material consumption caused by excessive width of the second insulating film 50.

The difference between the width of the second insulating film 50 and the width of the second pole ear portion 21 may be 2mm, 2.5mm, 3mm, 3.5mm, 4mm, 4.5mm, 5mm, 5.5mm, 6mm, 7mm, 8mm, 8.5mm, 9mm, 9.5mm, 10mm, 10.5mm, 11mm, 12mm, 13mm, 15mm, 18mm, 20mm, 21mm, 22mm, 23mm, 24mm, 24.5mm, 25mm, 26mm, 27mm, 28mm, 29mm, or 30mm, etc.

The first insulating film 40 and the second insulating film 50 may have substantially the same size, or the first insulating film 40 and the second insulating film 50 may have different sizes, which is not limited herein.

In one embodiment, as shown in fig. 5, the first battery cell 10 further includes a first cell main body 12, the first tab portion 11 extends from the first cell main body 12, and the first insulating film 40 is connected to the first cell main body 12, so that not only the first cell main body 12 can fix the first insulating film 40, but also the first insulating film 40 can protect the first cell main body 12, thereby improving the insulating performance of the battery.

Correspondingly, as shown in fig. 5, the second battery cell 20 further includes a second battery cell main body 22, the second pole ear portion 21 extends from the second battery cell main body 22, and the second insulating film 50 is connected to the second battery cell main body 22, so that not only can the second insulating film 50 be fixed by the second battery cell main body 22, but also the second insulating film 50 can realize the insulation protection of the second battery cell main body 22, and further, the insulation performance of the battery can be improved.

In one embodiment, the first insulating film 40 may entirely cover the first pole ear part 11, and the second insulating film 50 may entirely cover the second pole ear part 21.

The first insulating film 40 may be adhesively fixed to the first lug portion 11, and the second insulating film 50 may be adhesively fixed to the second lug portion 21. The first insulating film 40 may be adhesively secured to the first cell body 12, and the second insulating film 50 may be adhesively secured to the second cell body 22.

In one embodiment, the large surface of the first cell main body 12 is disposed opposite to the large surface of the second cell main body 22, the leading direction of the first tab portion 11 is parallel to the large surface of the first cell main body 12, the leading direction of the second tab portion 21 is parallel to the large surface of the second cell main body 22, the first insulating film 40 is connected to the large surface of the first cell main body 12, and the second insulating film 50 is connected to the large surface of the second cell main body 22, so that the connection stability of the first insulating film 40 and the second insulating film 50 can be improved, and the safety protection of the first insulating film 40 and the second insulating film 50 for the battery can be improved.

The large surface of the first cell main body 12 may be regarded as a surface of the first cell main body 12 having the largest area, and further, the large surface of the first cell main body 12 may be regarded as a surface of the first cell main body 12 generating the most heat.

The large surface of the second cell main body 22 may be regarded as a surface having the largest area of the second cell main body 22, and further, the large surface of the second cell main body 22 may be regarded as a surface generating the largest amount of heat from the second cell main body 22.

In one embodiment, as shown in fig. 5, the first pole ear 11 and the second pole ear 21 are spaced apart, i.e., the first pole ear 11 and the second pole ear 21 can be relatively small in size, so as to reduce the weight of the battery, thereby increasing the energy density of the battery.

In some embodiments, it is not excluded that the first and second pole ears 11, 21 may be stacked, or that the first and second pole ears 11, 21 may be butted.

In one embodiment, the pole assembly 30 is directly connected to the first pole ear 11 and the second pole ear 21, i.e. the adaptor sheet can be eliminated, thereby reducing the number of components used in the battery, not only improving the assembly efficiency of the battery, but also improving the energy density of the battery.

The pole assembly 30 may be welded directly to the first and second pole ear portions 11, 21.

In one embodiment, as shown in fig. 2, the battery further includes an adaptor sheet 60, and the pole assembly 30 is electrically connected to the first pole ear 11 and the second pole ear 21 through the adaptor sheet 60, so that the arrangement positions of the first pole ear 11 and the second pole ear 21 are more flexible, the arrangement of the pole assembly 30 is convenient, and the use of the battery is convenient.

The pole post assembly 30 can be welded to the interposer 60, and the interposer 60 can be welded to the first and second pole ears 11 and 21 at the same time, so that the interposer 60 can achieve the connection between the pole post assembly 30 and the first and second pole ears 11 and 21.

The interposer 60 may be a flat plate structure, or the interposer 60 may be a bent structure, which is not limited herein.

In one embodiment, as shown in fig. 2, the first insulating film 40 covers a side of the interposer 60 facing the pole assembly 30, and the second insulating film 50 covers a side of the interposer 60 facing the pole assembly 30, so that the first insulating film 40 and the second insulating film 50 can also achieve insulation protection of the interposer 60, improve safety performance of the battery, and avoid a risk of short circuit of the battery.

In one embodiment, as shown in fig. 6, the first insulating film 40 covers a side of the interposer 60 facing away from the pole assembly 30, and the second insulating film 50 covers a side of the interposer 60 facing away from the pole assembly 30, so that the first insulating film 40 and the second insulating film 50 do not affect the connection between the pole assembly 30 and the interposer 60, and the first insulating film 40 and the second insulating film 50 can also achieve insulation protection of the interposer 60, thereby improving safety performance of the battery and avoiding a risk of short circuit of the battery.

In one embodiment, the width of the first insulating film 40 is not greater than the width of the tab 60 in the direction perpendicular to the lead-out direction of the first pole ear portion 11, and/or the width of the second insulating film 50 is not greater than the width of the tab 60 in the direction perpendicular to the lead-out direction of the second pole ear portion 21, thereby preventing the first insulating film 40 and the second insulating film 50 from being oversized to occupy a large space, and preventing the first insulating film 40 and the second insulating film 50 from increasing the weight of the battery, thereby improving the usability of the battery.

In one embodiment, the width of the first insulating film 40 may be equal to the width of the interposer 60, and the width of the second insulating film 50 may be equal to the width of the interposer 60, so that the width of the interposer 60 may be made equal

In one embodiment, the width of the first insulating film 40 is smaller than the width of the interposer 60 along the direction perpendicular to the leading-out direction of the first pole ear portion 11, the width of the second insulating film 50 is smaller than the width of the interposer 60 along the direction perpendicular to the leading-out direction of the second pole ear portion 21, the pole assembly 30 is spaced from the first insulating film 40, and the pole assembly 30 is spaced from the second insulating film 50, so that the pole assembly 30 can be reliably connected with the interposer 60, and the first insulating film 40 and the second insulating film 50 are prevented from influencing the connection stability of the pole assembly 30 and the interposer 60.

In one embodiment, as shown in fig. 1, the battery further includes a battery housing 70, the first battery cell 10 and the second battery cell 20 are disposed in the battery housing 70, the post assembly 30 is disposed on the battery housing 70, and the post assembly 30 is disposed at an edge position of the battery housing 70, so that when a subsequent battery is grouped, the connection between the post assembly 30 and a busbar can be facilitated, the efficiency of grouping the battery is improved, and the space utilization rate of the battery pack is improved.

The pole assembly 30 is disposed at an edge position of the battery housing 70, i.e., the pole assembly 30 is close to the circumferential outer edge of the battery housing 70, for example, as shown in fig. 1, the battery is a substantially quadrangular-prism battery, in which case the pole assembly 30 may be disposed at an edge position in the length direction of the battery housing 70, there may be 4 corner regions on one surface of the battery housing 70, and the pole assembly 30 may be disposed at a middle position of two relatively close corner regions.

It should be noted that, as shown in fig. 1 to fig. 6, the battery may include two terminal assemblies 30, and the first battery cell 10 and the second battery cell 20 may include two first terminal ears 11 and two second terminal ears 21, in this case, the two terminal assemblies 30 may be a positive terminal assembly and a negative terminal assembly, respectively, and the two first terminal ears 11 and the two second terminal ears 21 may be a positive terminal ear and a negative terminal ear, respectively.

In one embodiment, as shown in fig. 2, the battery further includes a third insulating film 80, the first pole ear portion 11 is located between the third insulating film 80 and the first insulating film 40, and the second pole ear portion 21 is located between the third insulating film 80 and the second insulating film 50, so that the third insulating film 80 can be made to cooperate with the first insulating film 40 and the second insulating film 50 to achieve reliable insulation protection of the first pole ear portion 11 and the second pole ear portion 21.

In one embodiment, as shown in fig. 4, the first insulating film 40 is located between the third insulating film 80 and the first pole ear portion 11, and the second insulating film 50 is located between the third insulating film 80 and the second pole ear portion 21, i.e., the third insulating film 80 can achieve fixation of the first insulating film 40 and the second insulating film 50, and can increase the insulation protection capability of the battery.

Note 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 stack portion including a positive electrode sheet, a separator, and a negative electrode sheet. When the positive pole piece is a positive pole piece, the negative pole piece is a negative pole piece. The polarity of the positive pole piece and the polarity of the negative pole piece can be interchanged. And the positive pole piece and the negative pole piece are coated with active substances.

In one embodiment, the battery may be a prismatic battery, that is, the battery may be a prismatic battery, and the prismatic battery mainly refers to a battery whose shape is a prism, but does not strictly limit whether each edge of the prism is a straight line in a strict sense, and a 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 battery cell is a laminated battery cell, and the battery cell has mutually-laminated positive pole pieces, negative pole pieces opposite to the positive pole pieces in electrical property and diaphragm sheets arranged between the positive pole pieces and the negative pole pieces, so that a plurality of pairs of positive pole pieces and negative pole pieces are stacked to form the laminated battery cell.

Or, the battery may be a wound battery, that is, a positive electrode plate, a negative electrode plate having an opposite electrical property to the positive electrode plate, and a diaphragm disposed between the positive electrode plate and the negative electrode plate are wound to obtain a wound electrical core.

In one embodiment, the battery may be a cylindrical battery. The battery can be a winding battery, that is, a positive pole piece, a negative pole piece with an opposite electrical property to the positive pole piece, and a diaphragm arranged between the positive pole piece and the negative pole piece are wound to obtain a winding battery cell.

In one embodiment, the battery housing 70 may include a first housing piece and a second housing piece, which are connected. The first housing piece may be a cover plate, the second housing piece may be formed with a receiving cavity, and the pole assembly 30 may be disposed on the cover plate.

It should be noted that the first housing member and the second housing member may be provided independently. In some embodiments, it is not excluded that the first housing part and the second housing part may be of one integral structure, the space for accommodating the cell being formed by stamping and subsequently being connected in a closed manner by welding.

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

The utility model discloses a battery includes the battery, the battery includes first electric core 10, second electric core 20, utmost point post subassembly 30, first insulating film 40 and second insulating film 50, utmost point post subassembly 30 is simultaneously connected with first utmost point ear 11 and second utmost point ear 21 electricity, first electric core 10 includes first utmost point ear 11, second electric core 20 includes second utmost point ear 21, first insulating film 40 sets up in first utmost point ear 11, second insulating film 50 sets up in second utmost point ear 21, thereby can make first insulating film 40 and second insulating film 50 realize the insulation protection to first utmost point ear 11 and second utmost point ear 21 respectively, through making first insulating film 40 and second insulating film 50 components of a whole that can function independently set up, not only can make things convenient for first insulating film 40 to set up in first utmost point ear 11, second insulating film 50 sets up in second utmost point ear 21, and even there is the position deviation when first utmost point ear 11 and second utmost point ear 21 appear the mounted position deviation or the alignment degree is not high, first insulating film 40 and second insulating film 50 also can effectively protect first utmost point ear 11 and first utmost point ear 21, avoid first utmost point ear 11 and second utmost point ear 21 to appear the insulating film, thereby improve the safety performance of battery.

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 that have been 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 (12)

1. A battery, comprising:

a first electrical core (10), the first electrical core (10) comprising a first tab portion (11);

a second battery cell (20), the second battery cell (20) comprising a second pole ear portion (21);

a pole post assembly (30), the pole post assembly (30) being electrically connected to the first pole ear (11) and the second pole ear (21) simultaneously;

a first insulating film (40), the first insulating film (40) being provided to the first tab portion (11);

a second insulating film (50), the second insulating film (50) being provided to the second pole ear portion (21);

wherein the first insulating film (40) and the second insulating film (50) are provided separately.

2. The battery according to claim 1, characterized in that the first insulating film (40) is arranged on the side of the first pole lug portion (11) facing away from the pole assembly (30), and the second insulating film (50) is arranged on the side of the second pole lug portion (21) facing away from the pole assembly (30).

3. The battery according to claim 1, wherein the first insulating film (40) is provided on a side of the first pole ear portion (11) facing the pole assembly (30), and the second insulating film (50) is provided on a side of the second pole ear portion (21) facing the pole assembly (30).

4. The battery according to claim 1, wherein the first insulating film (40) is disposed at a distance from the second insulating film (50), or the first insulating film (40) is in contact with the second insulating film (50), or the first insulating film (40) overlaps the second insulating film (50).

5. The battery according to claim 1, wherein the width of the first insulating film (40) is larger than the width of the first tab portion (11) in a direction perpendicular to a lead-out direction of the first tab portion (11), and/or the width of the second insulating film (50) is larger than the width of the second tab portion (21) in a direction perpendicular to a lead-out direction of the second tab portion (21).

6. The battery according to claim 5, wherein a difference between a width of the first insulating film (40) and a width of the first pole ear portion (11) is 2mm to 30mm, and/or a difference between a width of the second insulating film (50) and a width of the second pole ear portion (21) is 2mm to 30mm.

7. The battery of any of claims 1 to 6, wherein the first cell (10) further comprises a first cell body (12), wherein the first tab portion (11) extends from the first cell body (12), and wherein the first insulating film (40) is connected to the first cell body (12);

the second battery cell (20) further comprises a second battery cell main body (22), the second pole ear portion (21) extends from the second battery cell main body (22), and the second insulating film (50) is connected to the second battery cell main body (22).

8. The battery of claim 7, wherein the large surface of the first cell main body (12) is arranged opposite to the large surface of the second cell main body (22), the leading-out direction of the first pole ear portions (11) is parallel to the large surface of the first cell main body (12), the leading-out direction of the second pole ear portions (21) is parallel to the large surface of the second cell main body (22), the first insulating film (40) is connected to the large surface of the first cell main body (12), and the second insulating film (50) is connected to the large surface of the second cell main body (22).

9. The battery according to any one of claims 1-6, characterized in that the pole assembly (30) is directly connected to both the first pole ear (11) and the second pole ear (21).

10. The battery according to any one of claims 1 to 6, further comprising an adapter sheet (60), wherein the pole assembly (30) is electrically connected to both the first pole ear (11) and the second pole ear (21) simultaneously via the adapter sheet (60).

11. The battery according to any one of claims 1 to 6, further comprising a third insulating film (80), wherein the first pole ear portion (11) is located between the third insulating film (80) and the first insulating film (40), and wherein the second pole ear portion (21) is located between the third insulating film (80) and the second insulating film (50), or wherein the first insulating film (40) is located between the third insulating film (80) and the first pole ear portion (11), and wherein the second insulating film (50) is located between the third insulating film (80) and the second pole ear portion (21).

12. The battery according to any one of claims 1 to 6, wherein the battery is a quadrangular-prism-type battery.

Images