CN215008422U - Battery and battery pack - Google Patents

Abstract

The utility model relates to a battery technology field provides a battery and group battery. The battery includes two relative bottom surfaces and side and flange portions that encircle the bottom surface setting, and the flange portion extends out towards the direction of keeping away from the battery from the edge of a bottom surface, and flange portion and bottom surface are nonparallel. Adopt flange portion and battery box fixed when the battery is in groups, the assembly is simple and convenient, thereby need not extrude the battery and can not harm the battery and can make and keep sufficient expansion gap between the battery simultaneously, can be more convenient take out the battery that breaks down from the box when single battery breaks down in addition and change and maintain.

Description

Battery and battery pack

Technical Field

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

Background

In the related art, the batteries are square batteries or cylindrical batteries, and when the batteries are grouped, the batteries are loaded into the box body to form a module or a battery pack so as to provide enough electric energy, but the current square batteries or cylindrical batteries are inconvenient to fix in the box body and need to be fixed by extrusion of the box body or fixed through a large amount of glue. The batteries are fixed in groups through the extrusion of the box body, and on one hand, the risk of damaging the batteries can be damaged due to too large extrusion force; on the other hand, the extrusion causes the gaps between the batteries to be smaller, so that the batteries do not have enough expansion space when being charged, and the cycle performance of the batteries is further influenced. The batteries are grouped and fixed by a large number of glues, the operation is difficult, the cost is increased, and the battery replacement is difficult when a single battery among them is out of order.

SUMMERY OF THE UTILITY MODEL

The utility model provides a battery and group battery to overcome above-mentioned prior art's at least one defect.

According to a first aspect of the present invention, there is provided a battery, comprising:

two opposing bottom surfaces and side surfaces disposed around the bottom surfaces;

and a flange portion extending from an edge of the one bottom surface in a direction away from the battery, the flange portion being non-parallel to the bottom surface.

The utility model discloses battery includes two relative bottom surfaces and encircles side and the flange portion that the bottom surface set up. The flange portion extends from an edge of the bottom surface in a direction away from the side surface, and the flange portion is not parallel to the bottom surface. Adopt flange portion and battery box fixed when the battery is in groups, the assembly is simple and convenient, thereby need not extrude the battery can not harm the battery, can make simultaneously to keep sufficient expansion gap between the battery, can be more convenient take out the battery that breaks down from the box when single battery breaks down in addition and change and maintain.

According to the utility model discloses a second aspect provides a battery pack, including foretell battery, the battery pack still includes the first board, sets up the relative setting in bottom surface of flange portion on first board and the battery body, and flange portion fixes on the first board.

The utility model discloses a group battery includes battery and first board. The battery comprises two opposite bottom surfaces, side surfaces and flange parts, wherein the side surfaces and the flange parts are arranged around the bottom surfaces; the flange portion extends from an edge of the bottom surface in a direction away from the side surface, and the flange portion is not parallel to the bottom surface. The first plate is disposed opposite to the bottom surface of the battery, and the flange portion is fixed to the first plate. Adopt flange portion and battery box fixed when the battery is in groups, the assembly is simple and convenient, thereby need not extrude the battery and can not harm the battery and can make and keep sufficient expansion gap between the battery simultaneously, can be more convenient take out the battery that breaks down from the box when single battery breaks down in addition and change and maintain.

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 of a battery according to another exemplary embodiment;

fig. 3 is a schematic diagram illustrating the structure of a battery pack according to an exemplary embodiment;

fig. 4 is a schematic structural view illustrating a battery pack according to another exemplary embodiment.

The reference numerals are explained below:

100. a battery; 101. a bottom surface; 102. a first side surface; 103. a second side surface; 20. a housing; 21. a first housing member; 211. a first bottom wall; 212. a side wall; 213. a first flange; 22. a second housing member; 221. a second bottom wall; 222. a second flange; 30. a flange portion; 31. a sub-flange portion; 200. a first plate; 300. a second plate.

Detailed Description

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

In the description of the present invention, unless explicitly stated or limited otherwise, the terms "first", "second" 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 invention can be understood by those skilled in the art according to specific situations.

Further, in the description of the present invention, it should be understood that the terms "upper", "lower", "inner", "outer", and the like used in the exemplary embodiments of the present invention are described with reference to the angles shown in the drawings, and should not be construed as limiting the exemplary embodiments of the present invention. It will also be understood that, in this context, when an element or feature is referred to as being "on", "under", or "inner", "outer" with respect to another element(s), it can be directly on "," under ", or" inner "," outer "with respect to the other element(s), or indirectly on", "under", or "inner", "outer" with respect to the other element(s) via intervening elements.

As shown in fig. 1 to 4, in one embodiment of the present invention, a battery is provided, including: two opposing bottom surfaces 101 and side surfaces disposed around the bottom surface 101; and a flange portion 30, wherein the flange portion 30 extends from an edge of the one bottom surface 101 in a direction away from the battery, and the flange portion 30 is not parallel to the bottom surface 101.

The battery of one embodiment of the present invention includes two opposing bottom surfaces 101 and side surfaces and flange portions 30 disposed around the bottom surface 101. The flange portion 30 extends from an edge of the bottom surface 101 in a direction away from the side surface, and the flange portion 30 is not parallel to the bottom surface 101. Adopt flange portion 30 and battery box fixed when the battery is in groups, the assembly is simple and convenient, thereby need not extrude the battery can not harm the battery, can make simultaneously to keep sufficient expansion gap between the battery, can be more convenient take out the battery that breaks down from the box when single battery breaks down in addition and change and maintain.

The battery includes a battery body, the outer surface of which includes two opposing bottom surfaces 101 and side surfaces disposed around the bottom surfaces 101.

Alternatively, in the present embodiment, the included angle between the flange portion 30 and the bottom surface 101 is α, where 0 ° < α < 180 °.

Optionally, in this embodiment, the included angle between the flange portion 30 and the bottom surface 101 is α, wherein α is greater than or equal to 45 ° and less than or equal to 135 °.

Alternatively, in the present embodiment, the flange portion 30 and the bottom surface 101 are substantially perpendicular, which is a perpendicular condition with acceptable error, that is, the included angle between the flange portion 30 and the bottom surface 101 is α, wherein α is greater than or equal to 70 ° and less than or equal to 110 °. As shown in fig. 1, the flange portion 30 is perpendicular to the bottom surface 101. As shown in fig. 2, the angle between the flange portion 30 and the bottom surface 101 is an obtuse angle.

The flange portion 30 may extend from the edge of the bottom surface 101, and the flange portion may extend from the edge of the bottom surface 101, which facilitates processing.

Further, in the present embodiment, the flange portion 30 extends from a partial edge of the bottom surface 101.

Alternatively, in the present embodiment, the flange portion 30 extends from the entire edge of the bottom surface 101.

Further, in the present embodiment, the flange portion 30 extends from the bottom surface 101 by a length of 0.05 to 5 mm. The length is less than 0.05mm, and the battery 100 and the battery box body are difficult to fix; the length is greater than 5mm, and the flange portion 30 is easily bent and deformed, which is not favorable for fixing the battery.

Further, in the present embodiment, the battery body may have a substantially prismatic or cylindrical shape, and the prism may be a triangular prism, a quadrangular prism, a pentagonal prism, a hexagonal prism, or the like. The preferred cell body is a quadrangular prism.

In one embodiment, the battery body is substantially rectangular, the side surfaces include two first side surfaces 102 and two second side surfaces 103, the bottom surface 101 is rectangular, the bottom surface 101 has two first side edges and two second side edges which are oppositely arranged, and the flange portion 30 extends from a part of the edge of one bottom surface 101 to a direction away from the battery body.

Further, in the present embodiment, the area of the bottom surface 101 is larger than that of the first side surface 102, and the area of the bottom surface 101 is larger than that of the second side surface 103.

Alternatively, in the present embodiment, the flange portion 30 extends from all of one first side of the bottom surface 101, and the length of the flange portion 30 is equal to or greater than the length of the first side of the bottom surface 101.

Optionally, in this embodiment, the flange portion 30 includes two sub-flange portions 31, and the two sub-flange portions 31 are disposed at intervals and respectively extend from two first side edges of the bottom surface 101.

Alternatively, in the present embodiment, the flange portion 30 includes two sub-flange portions 31, the two sub-flange portions 31 are disposed opposite to each other and respectively extend from all of two first side edges of the bottom surface 101, and a length dimension of each sub-flange portion 31 is equal to or greater than a length of the first side edge of the bottom surface 101.

Optionally, in this embodiment, the flange portion 30 includes three sub-flange portions 31, and the three sub-flange portions 31 are disposed at intervals and extend from two first sides and one second side of the bottom surface 101.

Alternatively, in the present embodiment, the flange portion 30 includes three sub-flange portions 31, the three sub-flange portions 31 respectively extend from all of two first sides and one second side of the bottom surface 101, and the three sub-flange portions 31 are continuously disposed as a whole.

Optionally, in this embodiment, the flange portion 30 includes four sub-flange portions 31, and the four sub-flange portions 31 are disposed at intervals and respectively extend from two first sides of the bottom surface 101 and two second sides of the bottom surface.

Optionally, in this embodiment, the flange portion 30 includes four sub-flange portions 31, the four sub-flange portions 31 respectively extend from all of two first sides and two second sides of the bottom surface 101, the four sub-flange portions 31 are continuously disposed as a whole, that is, all of the edges of the bottom surface 101 extend out of the flange portion 30 in a direction away from the battery body, the flange portion 30 is disposed around the bottom surface 101, and the flange portion 30 and the bottom surface 101 enclose a cavity with an open upper end.

In one embodiment, the battery has a post assembly disposed on the bottom surface 101 of the battery body from which the flange portion 30 extends.

In one embodiment, the battery is provided with two pole assemblies with different polarities, and the two pole assemblies are both disposed on the bottom surface 101 of the battery body extending from the flange portion 30, that is, the positive pole assembly and the negative pole assembly of the battery are both disposed on the bottom surface 101 of the battery body extending from the flange portion 30.

The pole assembly is disposed on the bottom surface 101 where the flange portion 30 is located, and the space of the flange portion 30 can be used by the pole assembly, thereby improving the space utilization rate when the batteries are grouped.

In one embodiment, the battery includes an explosion proof valve disposed on the bottom surface 101 of the battery body from which the flange portion 30 extends.

In one embodiment, the battery body includes a cell and a casing 20, the casing 20 accommodating the cell, and as shown in fig. 1 and 2, the casing 20 includes a first casing member 21 and a second casing member 22. The first housing member 21 includes a first bottom wall 211 and a side wall 212, the side wall 212 is bent from the first bottom wall 211 and extends upward, the side wall 212 defines an opening, and at least a portion of the side wall 212 extends upward from the opening to form a first flange 213. The second casing member 22 includes a second bottom wall 221, the second bottom wall 221 covers the opening, corresponding side edges of the second bottom wall 221 and the first flange 213 extend upward to form a second flange 222, and the second flange 222 and the first flange 213 are in contact connection to form the flange portion 30.

It should be noted that the housing 20 includes a first housing part 21 and a second housing part 22, which form a closed cavity for accommodating the battery cell. The first housing piece 21 is provided with an opening surrounded by side walls 212, and the bottom wall of the second housing piece covers the opening. The first flange 213 and the second flange 222 are connected to form a flange portion, and the flange portion 30 is not parallel to the bottom surface 101. Adopt flange portion 30 and battery box fixed when the battery is in groups, the assembly is simple and convenient, thereby need not extrude the battery can not harm the battery and can make and keep sufficient expansion gap between the battery simultaneously, can be more convenient take out the battery that breaks down from the box when single battery breaks down in addition and change and maintain.

Optionally, in this embodiment, the included angle between the first flange 213 and the first bottom wall 211 is α, and the included angle between the second flange 222 and the second bottom wall 221 is β, where α is greater than 0 ° < 180 °, and β is greater than 0 ° < 180 °.

Optionally, in this embodiment, the included angle between the first flange 213 and the first bottom wall 211 is α, and the included angle between the second flange 222 and the second bottom wall 221 is β, wherein α is greater than 45 ° < 135 °, and β is greater than 45 ° < 35 °.

Optionally, in this embodiment, the first flange 213 and the first bottom wall 211 are substantially perpendicular, which is a perpendicular condition capable of accepting error, that is, the included angle between the first flange 213 and the first bottom wall 211 is α, wherein α is greater than or equal to 70 ° and less than or equal to 110 °.

Alternatively, in this embodiment, the second flange 222 and the second bottom wall 221 are substantially perpendicular, which is a tolerable error, i.e., the included angle β between the second flange 222 and the second bottom wall 221 is β, wherein β is 70 ° ≦ β ≦ 110 °.

In one embodiment, the first bottom wall 211 of the first housing piece 21 is generally rectangular, the opening defined by the side walls 212 of the first housing piece 21 is generally rectangular, and the side walls 212 include two first side wall sections and two second side wall sections oppositely disposed, wherein a portion of one of the first side wall sections extends upwardly from the opening to form a first flange 213. The second bottom wall 221 of the second housing member 22 is substantially rectangular, corresponding sides of the second bottom wall 221 and the first flange 213 extend upward to form a second flange 222, the second flange 222 and the first flange 213 are disposed opposite to each other and have substantially the same area, and the second flange 222 and the first flange 213 are connected in contact to form the flange 30.

Optionally, in this embodiment, all of one first sidewall section of the first shell member 21 extends upward from the opening to form a first flange 213, the second bottom wall 221 of the second shell member 22 and the corresponding side edge of the first flange 213 extend upward to form a second flange 222, the second flange 222 and the first flange 213 are disposed opposite to each other and have substantially the same area, and the second flange 222 and the first flange 213 are in contact connection to form the flange 30.

Optionally, in this embodiment, two first sidewall sections of the first shell member 21, which are disposed oppositely, respectively have two first flanges 213, which are partially extended upward from the opening to form two spaced first flanges 213, two second flanges 222 are extended upward from corresponding sides of the second bottom wall 221 of the second shell member 22 and the two spaced first flanges 213, the two second flanges 222 and the two first flanges 213 are respectively disposed oppositely and have substantially the same area, and the two second flanges 222 and the two first flanges 213 are respectively connected in contact to form two spaced sub-flange portions 31.

Optionally, in this embodiment, the two first side wall sections of the first shell member 21, which are disposed oppositely, all extend upward from the opening to form two first flanges 213, which are disposed oppositely, the second bottom wall 221 of the second shell member 22 and the corresponding side edges of the first flanges 213 extend upward to form two second flanges 222, the two second flanges 222 and the two first flanges 213 are disposed oppositely and have substantially the same area, and the two second flanges 222 and the two first flanges 213 are respectively in contact connection to form the flange portion 30.

Optionally, in the present embodiment, all of the adjacent first side wall section and the adjacent second side wall section of the first housing member 21 extend upward from the opening to form a continuous first flange 213, and the first flange 213 includes two plate-shaped bodies arranged continuously and in a bent manner. The second bottom wall 221 of the second housing member 22 and the corresponding side of the first flange 213 extend upward to form a second flange 222, the second flange 222 and the first flange 213 are respectively disposed opposite to each other and have substantially the same area, and the second flange 222 and the first flange 213 are respectively connected in contact to form the flange 30.

Optionally, in this embodiment, two first side wall sections and one second side wall section, which are oppositely disposed to the first housing member 21, respectively have three first flanges 213, which are partially extended upward from the opening and are disposed at intervals. The second bottom wall 221 of the second shell member 22 and the corresponding side edges of the three spaced first flanges 213 extend upward to form three second flanges 222, the three second flanges 222 and the three first flanges 213 are respectively disposed opposite to each other and have substantially the same area, and the three second flanges 222 and the three first flanges 213 are respectively connected in contact to form three spaced sub-flange portions 31.

Optionally, in this embodiment, two first side wall sections and one second side wall section, which are oppositely disposed to the first housing member 21, all extend upward from the opening to form a continuous first flange 213. The second bottom wall 221 of the second housing member 22 and the corresponding side of the first flange 213 extend upward to form a second flange 222, the second flange 222 and the first flange 213 are respectively disposed opposite to each other and have substantially the same area, and the second flange 222 and the first flange 213 are respectively connected in contact to form the flange 30.

Optionally, in this embodiment, two first side wall sections and two second side wall sections of the first housing member 21, which are disposed opposite to each other, respectively have four first flanges 213, which are disposed at intervals and extend upward from the opening. The second bottom wall 221 of the second shell member 22 and the corresponding side edges of the four spaced first flanges 213 extend upward to form four second flanges 222, the four second flanges 222 and the four first flanges 213 are respectively disposed opposite to each other and have substantially the same area, and the four second flanges 222 and the four first flanges 213 are respectively connected in contact to form four spaced sub-flange portions 31.

Optionally, in this embodiment, the two first side wall sections and the two second side wall sections, which are oppositely disposed to the first housing member 21, all extend upward from the opening to form a continuous first flange 213, and the first flange 213 surrounds the opening and is in an annular structure. The second bottom wall 221 of the second housing member 22 and the corresponding side of the first flange 213 extend upward to form a second flange 222, the second flange 222 and the first flange 213 are respectively disposed opposite to each other and have substantially the same area, and the second flange 222 and the first flange 213 are respectively connected in contact to form the flange 30.

The flange portion 30 is formed by providing flanges to the first case member 21 and the second case member 22, which facilitates processing. The side walls 212 of the first case member 21 are all extended upward to form first flanges 213, the edges of the second bottom wall 221 of the second case member 22 are all extended upward to form second flanges 222, and the first flanges 213 and the second flanges 222 are welded to form flange portions. The first shell piece 21 and the second shell piece 22 can be directly formed by stamping, and the process is simple and the assembly is convenient.

It should be noted that, the specific structural forms of the first flange 213 and the second flange 222 shown in fig. 1 and fig. 2 are set at intervals, and after the specific installation, the first flange 213 and the second flange 222 are attached to each other, so that the two flanges are convenient to be welded and connected subsequently, and the battery cell is enclosed in the casing 20.

In one embodiment, the battery has a pole assembly disposed on the second bottom wall 221 of the second housing piece 22.

In one embodiment, the battery is provided with two pole assemblies of different polarities, both disposed on the second bottom wall 221 of the second housing piece 22, i.e., both the positive pole assembly and the negative pole assembly of the battery are disposed on the second bottom wall 221 of the second housing piece 22.

The pole assembly is disposed on the bottom surface 101 where the flange portion 30 is located, and the pole assembly can utilize the space of the flange portion 30, thereby improving the space utilization rate when the batteries are grouped.

In one embodiment, the battery is further provided with an explosion-proof valve provided on the second bottom wall 221 of the second housing member 22.

Optionally, in this embodiment, the battery cell includes 1 or at least 2 sub-battery cells, for example, the battery cell may include 1 sub-battery cell, 2 sub-battery cells, 3 sub-battery cells, 4 sub-battery cells, and the like. The sub-battery core comprises a first pole piece, a second pole piece opposite to the first pole piece in electrical property, and a diaphragm arranged between the first pole piece and the second pole piece.

In one embodiment, the sub-cells are laminated cells having a first pole piece, a diaphragm, and a second pole piece opposite to the first pole piece stacked in sequence, such that pairs of the first pole piece and the second pole piece are stacked to form the laminated cells.

In one embodiment, the sub-cell is a winding cell, and 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 the winding cell.

In one embodiment, the length of the cell is a, 400mm a 2500mm, the width of the cell is b, the height of the cell is c, 2b a 50b, and/or 0.5c b 20 c.

Furthermore, b is more than or equal to 50mm and less than or equal to 200mm, and c is more than or equal to 10mm and less than or equal to 100 mm.

Preferably, 4 b.ltoreq.a.ltoreq.25 b, and/or 2 c.ltoreq.b.ltoreq.10 c.

In the battery in the above embodiment, the ratio of the length to the width of the battery is large, and further, the ratio of the width to the height of the battery is large, while sufficient energy density is ensured.

In one embodiment, the length of the battery is a, the width of the battery is b, and a is greater than or equal to 4b and less than or equal to 7b, i.e., the ratio of the length to the width of the battery in the embodiment is larger, so that the energy density of the battery is increased, and the subsequent formation of the battery module is facilitated.

In one embodiment, the height of the battery is c, b is more than or equal to 3c and less than or equal to 7c, and the ratio of the width to the height of the battery is larger, so that the battery is convenient to form under the condition of ensuring enough energy density.

Alternatively, the length of the cell may be 500mm to 1500mm, the width of the cell may be 80mm to 150mm, and the height of the cell may be 15mm to 25 mm.

The length of the battery is the dimension of the battery body in the length direction, the width of the battery is the dimension of the battery in the width direction, and the height of the battery is the dimension of the battery in the height direction, that is, the thickness of the battery.

An embodiment of the present invention further provides a battery pack, as shown in fig. 3, the battery pack includes the above-mentioned battery 100 and a first plate 200, the first plate 200 and the bottom surface 101 provided with the flange portion 30 are oppositely disposed, and the flange portion 30 is fixed on the first plate 200.

In the present embodiment, the battery pack includes a battery 100 and a first plate 200. The battery 100 includes two opposing bottom surfaces 101 and side surfaces disposed around the bottom surfaces 101, a flange portion 30, a cell, and a case 20, the case 20 accommodating the cell; the flange portion 30 extends from an edge of the bottom surface 101 in a direction away from the side surface, and the flange portion 30 is not parallel to the bottom surface 101. First plate 200 is disposed to face bottom surface 101 of battery 100, and flange 30 is fixed to first plate 200. Adopt flange portion 30 and battery box fixed when the battery is in groups, the assembly is simple and convenient, thereby need not extrude the battery can not harm the battery and can make and keep sufficient expansion gap between the battery simultaneously, can be more convenient take out the battery that breaks down from the box when single battery breaks down in addition and change and maintain.

In one embodiment, the battery body is generally rectangular parallelepiped, and the outer surface of the battery body includes two opposing bottom surfaces 101 and side surfaces disposed around the bottom surface 101. The side surfaces include two first side surfaces 102 and two second side surfaces 103, the bottom surface 101 is a rectangular surface, the bottom surface 101 has two first side edges and two second side edges which are oppositely arranged, and the flange portion 30 extends from a partial edge of one bottom surface 101 in a direction away from the battery body.

Further, in the present embodiment, the area of the bottom surface 101 is larger than the areas of the first side surface 102 and the second side surface 103.

Alternatively, in the present embodiment, the flange portion 30 includes two sub-flange portions 31, the two sub-flange portions 31 are spaced apart from each other and extend from two first sides of the bottom surface 101, and both the two sub-flange portions 31 are fixedly connected to the first plate 200.

Alternatively, in the present embodiment, the flange portion 30 includes two sub-flange portions 31, the two sub-flange portions 31 are oppositely disposed and respectively extend from all of the two oppositely disposed first side edges of the bottom surface 101, the length of each sub-flange portion 31 is equal to or greater than the length of the first side edge of the rectangular surface, and both sub-flanges are fixedly connected to the first plate 200.

Optionally, in this embodiment, the flange portion 30 includes three sub-flange portions 31, and the three sub-flange portions 31 are disposed at intervals and extend from two first sides and one second side of the bottom surface 101, which are disposed opposite to each other.

Alternatively, in the present embodiment, the flange portion 30 includes three sub-flange portions 31, the three sub-flange portions 31 respectively extend from all of two first sides and one second side of the bottom surface 101, and the three sub-flange portions 31 are continuously provided as a whole.

Optionally, in this embodiment, the flange portion 30 includes four sub-flange portions 31, and the four sub-flange portions 31 are disposed at intervals and extend from two first sides and two second sides of the bottom surface 101, which are disposed opposite to each other.

Alternatively, in the present embodiment, the flange portion 30 includes four sub-flange portions 31, the four sub-flange portions 31 respectively extend from all of two first sides and two second sides of the bottom surface 101, and the four sub-flange portions 31 are continuously disposed as a whole. That is, the flange 30 extends from the entire edge of the bottom surface 101 in a direction away from the battery body, the flange 30 is disposed around the bottom surface 101, and the flange 30 and the bottom surface 101 enclose a cavity having an open upper end.

It should be noted that, the side edge of the bottom surface 101 of the battery body has a plurality of sub-flange portions 31 fixed on the first plate 200, so that the stress of the battery is balanced and the battery is stably fixed.

In one embodiment, a cavity is formed between the first plate 200 and the bottom surface 101 of the battery body, from which the flange 30 extends, and a fixing adhesive is disposed in the cavity, and the fixing adhesive bonds the bottom surface 101 of the battery and the first plate, thereby further enhancing the fixing strength of the battery. Meanwhile, the fixing glue can be heat-conducting glue, the heat of the battery can be quickly conducted away by the heat-conducting glue, and the risk of thermal runaway of the battery is reduced. Optionally, the fixing glue can also be heat insulation glue, and the heat insulation glue can prevent the heat of the battery from being transferred to other batteries, so that the performance of other batteries is influenced, and meanwhile, the linkage thermal runaway of other batteries can be effectively prevented when the thermal runaway of the battery is caused.

Further, in this embodiment, the flange portion 30 extends from the entire edge of the bottom surface 101 of the battery body in a direction away from the battery body, and a cavity is provided between the first plate 200 and the bottom surface 101 of the battery body, from which the flange portion 30 extends, and a fixing adhesive is provided in the cavity. Because the flange part 30 extends out of the whole edge of the bottom surface 101 of the battery body, the flange part 30 and the bottom surface 101 enclose a cavity with an opening at the upper end and a closed periphery, glue cannot overflow during gluing, and the operation is convenient.

In one embodiment, a cavity is formed between the first plate 200 and the bottom surface 101 of the battery body, on which the flange 30 extends, and a heat conducting material is disposed in the cavity, so that the heat of the battery can be quickly conducted away by the heat conducting material, and the risk of thermal runaway of the battery is reduced.

It should be noted that the heat conducting material is any material capable of conducting heat away, including but not limited to liquid cooling tubes, phase change materials, heat conducting tubes, metals, etc.

In one embodiment, a cavity is formed between the first plate 200 and the bottom surface 101 of the battery body, on which the flange 30 extends, and a heat insulating material is disposed in the cavity, and the heat insulating material can prevent heat of the battery from being transferred to other batteries, thereby affecting the performance of the other batteries, and can also effectively prevent the thermal runaway of the other batteries in a chain manner when the batteries are thermally runaway.

It should be noted that the thermal insulation material is any material that can insulate heat, including but not limited to mica sheets, aerogel blanket, air, quartz, asbestos, and the like.

In one embodiment, a cavity is provided between the first plate 200 and the bottom surface 101 of the battery body extending out of the flange portion 30, an explosion-proof valve is provided on the bottom surface 101 of the battery body extending out of the flange portion 30, the explosion-proof valve is opened when the internal pressure of the battery is higher, the cavity between the first plate and the bottom surface 101 of the battery can contain part of the sprayed electrolyte and the fragments of the pole piece, and the cavity can also be used as a channel for spraying gas.

Further, in this embodiment, only a portion of the edge of the bottom surface 101 of the battery body extends out of the flange portion 30 in a direction away from the battery body, a cavity is provided between the first plate 200 and the bottom surface 101 of the battery body, which extends out of the flange portion 30, and an explosion-proof valve is provided on the bottom surface 101 of the battery body, which extends out of the flange portion 30. Because only part edge of battery body bottom surface 101 extends flange portion 30, flange portion 30 and bottom surface 101 enclose into the upper end opening and have the breach cavity all around, when battery and first board 200 were fixed, even first board 200 covers the upper end opening of cavity, owing to there is the breach around the cavity, can be favorable to the gaseous smooth discharge after the explosion-proof valve dashes open.

In one embodiment, the first plate 200 is provided with a groove, and the flange portion 30 is inserted into the groove, so that the connection between the first plate and the groove is convenient, the assembly process is simple, and time and labor are saved.

As shown in fig. 3, in one embodiment, the battery pack includes at least two batteries 100, a first plate 200, and a second plate 300. The flange 30 is provided on one bottom surface 101 of each of the two batteries 100, the other bottom surface 101 of the two batteries, which is away from the flange 30, is disposed to face each other, and the first plate 200 is fixedly connected to the flange 30 of one of the batteries 100. The second plate 300 is disposed to face the bottom surface 101 of the other battery 100, and the flange 30 of the other battery is fixedly connected to the second plate 300.

It should be noted that, the flange portions 30 are respectively disposed on the two batteries 100, the flange portions 30 of the two batteries 100 are respectively outward, the two are oppositely disposed away from the bottom surface 101 of the flange portion 30, the first plate 200 and the second plate 300 clamp the batteries therebetween, the batteries are firmly fixed, and the space utilization rate of battery grouping is improved.

Further, in this embodiment, the second plate 300 is fixedly connected to the flange portion 30 of one battery, a cavity is disposed between the second plate 300 and the bottom surface 101 extending from the flange portion 30, and a fixing adhesive, a heat conducting material or a heat insulating material may be disposed in the cavity, wherein the fixing adhesive, the heat conducting material or the heat insulating material has the same functions as those described above, and thus, the description thereof is omitted.

Further, in this embodiment, the second plate 300 is fixedly connected to the flange portion 30 of one battery, a cavity is provided between the second plate 300 and the bottom surface 101 from which the flange portion 30 extends, and an explosion-proof valve is provided on the bottom surface 101 from which the flange portion 30 extends. When the internal pressure of the battery is higher, the explosion-proof valve is opened, the cavity between the second plate and the bottom surface 101 of the battery can contain part of sprayed electrolyte and pole piece fragments, and the cavity can also be used as a channel for spraying gas.

In one embodiment, the second plate 300 is provided with a groove, and the flange portion 30 is inserted into the groove, so that the connection between the second plate and the groove is convenient, the assembly process is simple, and time and labor are saved.

In one embodiment, the battery pack includes at least two batteries 100 and a first plate 200, the flange portions 30 are provided on one bottom surface 101 of each of the two batteries 100, the side surfaces of the two batteries 100 are disposed to face each other, the first plate 200 and one bottom surface 101 of each of the two batteries are disposed to face each other, and the flange portions 30 of each of the two batteries 100 are fixed to the first plate 200. This can improve the space utilization of battery grouping.

In one embodiment, as shown in fig. 4, the battery pack includes at least two batteries 100, a flange portion 30 is provided on one bottom surface 101 of the battery 100, and the other bottom surface of one battery 100, which is away from the flange portion 30, is disposed opposite to the one bottom surface 101 of the other battery 100, which is provided with the flange portion 30, such that the adjacent two batteries 100 are stacked like a left-right stack, and a portion of one battery 100 is accommodated like in the flange portion 30 of the other battery 100 when an included angle between the flange portion 30 and the bottom surface 101 is an obtuse angle.

Further, in one embodiment, the two batteries 100 each include a battery body, the battery body is substantially rectangular parallelepiped, the battery body includes two bottom surfaces 101 disposed oppositely, two first side surfaces 102 disposed oppositely, and two second side surfaces 103 disposed oppositely, the flange portion 30 includes two sub-flange portions 31, the two sub-flange portions 31 are disposed oppositely and extend from all of two side edges where one bottom surface 101 and two first side surfaces 102 intersect, respectively, and a length of each sub-flange portion 31 is equal to or greater than a length of a side edge of the rectangular surface. The adjacent second side surfaces 103 of the two cells are oppositely arranged, and the flange portions 30 of the two cells are connected together, i.e. the first sub-flange portion of one cell and the first sub-flange portion of the other cell are connected together, the second sub-flange portion of one cell and the second sub-flange portion of the other cell are connected together, and the spaces between the first sub-flange portion and the second sub-flange portion of the two cells are also connected to each other to form a channel. The channel can be used for conveniently filling glue into the bottom surface 101 and can also be used as a channel for discharging gas when the explosion-proof valve is opened.

Further, in some embodiments, a fixing adhesive, a heat conducting material or a heat insulating material may be disposed between two adjacent batteries, wherein the fixing adhesive, the heat conducting material or the heat insulating material performs the same function as that described above, and therefore, the description thereof is omitted.

Further, in some embodiments, the first plate 200 and the second plate 300 may be fixing plates, conductive plates, or heat exchange plates.

In some embodiments, the battery pack is a battery module.

In some embodiments, the battery pack is a battery pack.

It should be noted that the above embodiments are partially described in which the bottom surface 101 and the side surfaces of the battery are replaced by a battery body, and the battery body includes the bottom surface 101 and the side surfaces.

Other embodiments of the invention will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. The present invention is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the invention and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and exemplary embodiments be considered as exemplary only, with a true scope and spirit of the invention 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 (14)

1. A battery, comprising:

two opposing bottom surfaces (101) and side surfaces arranged around the bottom surfaces (101);

a flange portion (30), the flange portion (30) extending from an edge of one of the bottom surfaces (101) in a direction away from the battery, the flange portion (30) and the bottom surface (101) being non-parallel.

2. The battery according to claim 1, wherein the flange portion (30) extends from the entire edge of the bottom surface (101) such that the flange portion (30) is disposed around the bottom surface (101).

3. The battery of claim 1, wherein the flange portion (30) and the bottom surface (101) are substantially perpendicular.

4. The battery according to claim 1, wherein the side surfaces comprise two first side surfaces (102) and two second side surfaces (103) which are oppositely arranged, the area of the bottom surface (101) is larger than that of the first side surfaces (102), and the area of the bottom surface (101) is larger than that of the second side surfaces (103).

5. The battery of claim 1, wherein the battery comprises a cell and a housing (20), the housing (20) housing the cell, the housing (20) comprising:

the first shell piece (21), the first shell piece (21) comprises a first bottom wall (211) and a side wall (212), the side wall (212) is bent at the first bottom wall (211) and extends upwards, the side wall (212) surrounds an opening, and at least part of the side wall (212) extends upwards from the opening to form a first flange (213);

the second shell piece (22), the second shell piece (22) comprises a second bottom wall (221), the second bottom wall (221) covers the opening, corresponding side edges of the second bottom wall (221) and the first flange (213) extend upwards to form a second flange (222), and the second flange (222) is in contact connection with the first flange (213) to form the flange part (30).

6. The battery according to claim 1, wherein an explosion-proof valve is provided on the bottom surface (101) on which the flange portion (30) is provided.

7. A battery pack, comprising the battery according to any one of claims 1 to 6, and further comprising a first plate (200), wherein the first plate (200) is disposed opposite to a bottom surface (101) on which a flange portion (30) is disposed, and wherein the flange portion (30) is fixed to the first plate (200).

8. Battery pack according to claim 7, characterised in that the first plate (200) is provided with a recess in which the flange part (30) is plugged.

9. The battery according to claim 7, wherein a cavity is provided between the bottom surface (101) and the first plate (200), the cavity being provided with at least one of a fixing glue, a heat conducting material or a heat insulating material.

10. The battery pack according to claim 7, characterized in that the battery pack comprises at least two batteries (100), a flange portion (30) is provided on one bottom surface (101) of the batteries (100), two batteries (100) are oppositely disposed away from the other bottom surface (101) of the flange portion (30), and the first plate (200) and the flange portion (30) of one battery (100) are fixedly connected.

11. The battery pack of claim 10, further comprising:

and a second plate (300), wherein the second plate (300) is arranged opposite to one bottom surface (101) of the other battery (100), and the flange part (30) of the other battery (100) is fixedly connected with the second plate (300).

12. The battery according to claim 11, wherein the first plate (200) and the second plate (300) are fixing plates, conductive plates or heat exchange plates.

13. The battery pack according to claim 7, wherein the battery pack comprises at least two cells (100), wherein a flange portion (30) is provided on one bottom surface (101) of the cells (100), wherein side surfaces of the two cells (100) are disposed to face each other, and wherein the flange portions (30) of the two cells (100) are fixed to the first plate (200).

14. The battery pack according to claim 7, characterized in that the battery pack comprises at least two batteries (100), the flange portion (30) is provided on one bottom surface (101) of the batteries (100), and the other bottom surface (101) of one battery (100) remote from the flange portion (30) is disposed opposite to the one bottom surface (101) of the other battery (100) provided with the flange portion (30).

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