Battery, battery pack and electric equipment

Abstract

The utility model discloses a battery, a battery pack and electric equipment. The battery comprises a battery cell shell, a battery cell and an excessive glue blocking piece, a containing cavity is formed in the battery cell shell, the battery cell shell comprises a glue pouring plate, a glue pouring hole is formed in the glue pouring plate, and the glue pouring hole is communicated with the containing cavity; the battery cell is mounted in the accommodating cavity; the glue overflowing blocking piece is arranged between the battery cell and the glue pouring plate, a glue pouring area is defined by the glue overflowing blocking piece, the battery cell and the glue pouring plate, the glue pouring hole is communicated with the glue pouring area, and the glue overflowing blocking piece is used for limiting glue in the glue pouring area from overflowing. According to the battery, the battery cell and the battery cell shell are connected through the glue in the glue filling area, the upper limit of the inherent frequency of the battery is effectively improved, the modal of the battery is improved, and the reliability of the battery under the vibration working condition is enhanced. And the glue is limited in the glue filling area through the excessive glue blocking piece, so that the interference between the glue and other structures in the battery cell is reduced, and the controllability of glue filling is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, and in particular to a battery, a battery pack having the battery, and an electrical device having the battery pack. Background Art

[0002] The battery includes a cell shell and a cell. A receiving cavity is formed in the cell shell, and the cell is arranged in the receiving cavity. In the related art, glue can be poured between the cell and the cell shell to fix the cell in the receiving cavity. However, the position of the glue is not fixed, which easily leads to the problem of loose bonding. Utility Model Content

[0003] The utility model aims to solve at least one of the above technical problems in the prior art to a certain extent. To this end, the utility model provides a battery, which can limit the colloid in the glue filling area by setting a glue overflow stopper, reduce the overflow of the colloid, and improve the safety of the battery.

[0004] The utility model also provides a battery pack.

[0005] The utility model also provides an electric device.

[0006] According to the battery of the embodiment of the utility model, the battery comprises a battery cell shell, a battery cell and a glue overflow stopper, wherein a accommodating cavity is formed in the battery cell shell, the battery cell shell comprises a glue filling plate, the glue filling plate is provided with glue filling holes, and the glue filling holes are connected with the accommodating cavity; the battery cell is installed in the accommodating cavity; the glue overflow stopper is arranged between the battery cell and the glue filling plate, a glue filling area is enclosed between the glue overflow stopper, the battery cell and the glue filling plate, the glue filling holes are connected with the glue filling area, and the glue overflow stopper is used to limit the overflow of colloid in the glue filling area.

[0007] According to the battery of the embodiment of the utility model, by limiting the colloid injected into the glue injection hole to the glue injection area, the battery cell and the battery cell shell can be connected through the colloid in the glue injection area, which effectively improves the upper limit of the battery's natural frequency, improves the battery's mode, and enhances the reliability of the battery under vibration conditions. The colloid is limited to the glue injection area by the overflow glue stopper, reducing the interference between the colloid and the rest of the structure in the battery cell; and the overflow glue stopper has a simple structure, which can reduce the impact on the structural design of the main components of the battery and the existing process, and the changes in mass production line equipment and processes are small, saving costs.

[0008] In some embodiments, the glue overflow stopper includes at least one annular structure, and the glue filling area is enclosed between the annular structure and the battery cell and the glue filling board. The annular structure is suitable for fitting with at least one of the battery cell and the glue filling board.

[0009] In some embodiments, the battery cell includes a battery cell body, a first pole ear and a second pole ear, the first pole ear and the second pole ear are both connected to the battery cell body, the battery cell body includes two large surfaces arranged opposite to each other, two narrow surfaces arranged opposite to each other, and an end surface for leading out the first pole ear and the second pole ear, the area of ​​the large surface is larger than the area of ​​the narrow surface, and the glue overflow stopper is arranged between at least one of the narrow surfaces and the glue filling plate.

[0010] In some embodiments, the battery cell body includes: a pole core and a plastic film, the plastic film includes a plastic film body, the plastic film body covers the pole core, the first pole ear and the second pole ear are suitable for extending from the end of the plastic film body, and the overflow glue stopper is arranged between the plastic film body and the glue filling plate.

[0011] In some embodiments, the molding film body is a polyhedral structure, and the intersection of two non-coplanar planes and / or the intersection of three non-coplanar planes of the molding film body forms a top angle of the molding film, and the glue pouring area is separated from the top angle of the molding film so that the glue pouring area avoids the top angle of the molding film.

[0012] In some embodiments, the first pole tab and the second pole tab are located in a first direction of the overmolding film body, and in the first direction, the minimum distance between the overflow stopper and the top corner of the overmolding film is not less than 5% of the length of the overmolding film body in the first direction.

[0013] In some embodiments, the overflow glue stopper is a combination of one or more of a foam structure, a rubber structure, and a silicone structure.

[0014] In some embodiments, each of the annular structures is configured as a closed annular shape.

[0015] In some embodiments, each of the annular structures includes a first stopper and a second stopper, wherein the first stoppers are two oppositely arranged, and the second stoppers are two oppositely arranged, and the two first stoppers and the two second stoppers form a quadrilateral structure, wherein the first stopper is used to enclose the glue pouring area in a first direction, and the second stopper is used to enclose the glue pouring area in a second direction, and the first direction and the second direction are different directions.

[0016] In some embodiments, a sealing piece is provided at the glue filling hole, and the sealing piece is used to seal the corresponding hole.

[0017] In some embodiments, there are multiple battery cells, and the multiple battery cells are divided into multiple battery cell groups. The multiple battery cell groups are arranged sequentially along the first direction, each of the battery cell groups is connected to at least one of the glue filling holes, and each of the battery cell groups includes one or more of the battery cells.

[0018] In some embodiments, two adjacent battery cell groups are separated by a protective cover.

[0019] In some embodiments, the plurality of battery cells are divided into multiple rows, each row of the battery cells are arranged along the first direction, multiple rows of the battery cells are arranged in the second direction, the glue filling plate is located in the third direction of the multiple rows of the battery cells, and each row of the battery cells is aligned with at least one of the glue filling holes, wherein the first direction, the second direction, and the third direction are perpendicular to each other.

[0020] In some embodiments, two adjacent rows of the battery cells are separated by a partition.

[0021] In some embodiments, the battery also includes a die-cut protective film, which is located in the accommodating cavity and covers the battery cell. The die-cut protective film is provided with an avoidance gap, and the projection of the glue filling area on the die-cut protective film is at least partially located in the corresponding avoidance gap.

[0022] In some embodiments, the battery further includes a protective sheet, which is attached to the corner structure of the outer surface of the battery cell, and the corner structure includes an edge formed by the intersection of two non-coplanar planes and / or a corner formed by the intersection of three non-coplanar planes.

[0023] In some embodiments, the battery further includes a collection line, the collection line at least partially extends into the accommodating cavity, and the battery cell is connected to the collection line.

[0024] The battery pack according to the embodiment of the utility model comprises: a tray and the above-mentioned battery, wherein the tray has a mounting cavity therein, and the battery is located in the mounting cavity.

[0025] According to the battery pack of the embodiment of the utility model, the battery cell and the battery cell shell are connected through the colloid in the glue filling area, which effectively improves the upper limit of the battery's natural frequency, improves the battery's mode, and enhances the reliability of the battery under vibration conditions. The colloid is confined to the glue filling area by the overflow glue stopper, reducing the interference between the colloid and the rest of the structure in the battery cell; and only changing the structural design of the overflow glue stopper can reduce the impact on the structural design of the main battery components and the existing process, and the changes in mass production line equipment and processes are small, saving costs.

[0026] In some embodiments, the battery further includes: a heat exchange plate, the heat exchange plate is mounted on the tray, the heat exchange plate has a heat exchange channel, the battery is in direct contact with the heat exchange plate, or a heat conductive structure is provided between the battery and the heat exchange plate.

[0027] In some embodiments, the battery further includes: a bottom guard plate and a cover plate, wherein the bottom guard plate is installed at the bottom of the tray, the cover plate is installed at the tray, and the battery is located between the bottom guard plate and the cover plate.

[0028] In some embodiments, the number of the batteries is multiple and they are arranged in multiple rows and columns. The battery pack also includes multiple pressure plates, which are located between the batteries and the cover plate. The pressure plates are connected to the tray, and the batteries in the same row or column are connected to the corresponding pressure plates.

[0029] In some embodiments, the battery pack also includes electrical components, which are installed on the tray and located at one end of the battery in the first direction, and an insulating bracket is provided at the other end of the battery in the first direction, and side insulation layers and insulating brackets are provided on both sides of the battery in the second direction, and end insulation layers are provided at both ends of the battery in the first direction, and the side insulation layers, the insulating bracket and the end insulation layers are all located in the installation cavity, and a top insulation layer is provided between the cover plate and the battery.

[0030] The electric device according to the embodiment of the utility model includes the battery pack according to the embodiment of the utility model.

[0031] According to the electric equipment of the embodiment of the utility model, the battery cell of the battery pack is connected to the battery cell shell through the colloid in the glue filling area, which effectively improves the upper limit of the natural frequency of the battery, improves the mode of the battery, and enhances the reliability of the battery under vibration conditions. The colloid is confined to the glue filling area by the overflow glue stopper, reducing the interference between the colloid and the rest of the structure in the battery cell; and only changing the structural design of the overflow glue stopper can reduce the impact on the structural design of the main battery components and the existing process, and the changes in the mass production line equipment and process are small, saving costs.

[0032] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 is an exploded schematic diagram of a battery according to an embodiment of the utility model;

[0034] Figure 2 It is a three-dimensional schematic diagram of a single battery cell;

[0035] Figure 3 It is a three-dimensional schematic diagram of a battery cell housing from one perspective;

[0036] Figure 4 It is a three-dimensional schematic diagram of the battery cell housing from another perspective;

[0037] Figure 5 It is a schematic diagram of the installation between the battery shell and the battery;

[0038] Figure 6 is a schematic diagram of an overflow glue stopper according to some embodiments of the utility model;

[0039] Figure 7 is a schematic diagram of a battery pack according to an embodiment of the utility model;

[0040] Figure 8 It is a schematic diagram of an electrical device according to an embodiment of the utility model.

[0041] Reference numerals:

[0042] Electrical equipment 1000, battery pack 100, battery 10, battery cell shell 1, glue filling plate 16, glue filling hole 161, first plate 11, first glue filling hole 111, second plate 12, second glue filling hole 121, third plate 13, fourth plate 14, accommodating cavity 15, battery cell 2, first battery cell group 21, second battery cell group 22, third battery cell group 23, fourth battery cell group 24, battery cell body 25, large surface 250, narrow surface 252, end surface 253, plastic film 251, plastic film body 2511, plastic film extension section 2512, plastic film vertex 2513, first plastic film vertex 25131, second plastic film vertex 25132, first pole ear 26, first The ear glue 261, the second ear 27, the second ear glue 272, the blocking sheet 3, the protective cover 4, the first protective cover 41, the second protective cover 42, the third protective cover 43, the fourth protective cover 44, the protective spacer 45, the connecting fixing member 46, the partition 51, the die-cutting protective film 52, the collection line 53, the first rubber block 61, the second rubber block 62, the third rubber block 63, the fourth rubber block 64, the fifth rubber block 65, the sixth rubber block 66, the seventh rubber block 67, the eighth rubber block 68, the first protective sheet 71, the second protective sheet 72, the third protective sheet 73, the fourth protective sheet 74, the fifth protective sheet 75, the overflow glue stopper 8, the first stopper 81, the second stopper 82, the annular structure 83;

[0043] Tray 20 , lifting ear 201 , heat exchange plate 30 , water inlet pipe 301 , water outlet pipe 302 , bottom guard plate 40 , cover plate 50 , pressure plate 60 , electrical parts 70 , insulating bracket 801 , side insulation layer 802 , end insulation layer 803 , top insulation layer 804 . DETAILED DESCRIPTION

[0044] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0045] In the description of the present invention, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0046] Combine the following Figure 1-Figure 8 The battery 10 according to the embodiment of the present invention is described in detail.

[0047] Reference Figure 1 and Figure 5 As shown, the battery 10 according to the embodiment of the utility model includes a battery cell housing 1, a battery cell 2 and a glue overflow stopper 8.

[0048] An accommodating cavity 15 is formed in the battery cell housing 1 , and the battery cell 2 can be accommodated and installed in the accommodating cavity 15 .

[0049] The battery cell housing 1 includes a glue filling plate 16 , on which a glue filling hole 161 is formed. The glue filling hole 161 is connected to the accommodating cavity 15 . During glue filling, the glue can be poured into the accommodating cavity 15 through the glue filling hole 161 .

[0050] The overflow glue stopper 8 is arranged between the battery cell 2 and the glue filling plate 16 . A glue filling area is surrounded by the overflow glue stopper 8 , the battery cell 2 and the glue filling plate 16 . The glue filling hole 161 is connected to the glue filling area. The glue filling area is a part of the accommodating cavity 15 .

[0051] Optionally, the overflow glue stopper 8 is fitted with the battery core 2 and the overflow glue stopper 8 is also fitted with the glue filling board 16. Alternatively, the overflow glue stopper 8 is suitable for fitting with one of the battery core 2 and the glue filling board 16.

[0052] In some embodiments, the overflow glue stopper 8 includes at least one annular structure 83, and a glue filling area is enclosed between the annular structure 83, the battery cell 2, and the glue filling board 16, and the annular structure 83 is suitable for being fitted with at least one of the battery cell 2 and the glue filling board 16. Optionally, the annular structure 83 is fitted with the battery cell 2 and the annular structure 83 is also fitted with the glue filling board 16, so that there is no gap between the annular structure 83 and the battery cell 2, and there is no gap between the annular structure 83 and the glue filling board 16, and the colloid will not overflow from between the annular structure 83 and the battery cell 2, and between the annular structure 83 and the glue filling board 16 to the accommodating cavity 15.

[0053] It should be noted that the "annular structure 83" included in the overflow glue stopper 8 refers to a closed annular shape on the overflow glue stopper 8, which is used to constrain the position of the colloid and prevent the colloid from overflowing from the shape. The annular structure 83 encloses an annular area, and the annular area penetrates the overflow glue stopper 8 along the thickness direction of the overflow glue stopper 8 to accommodate the colloid. In this way, when the overflow glue stopper 8 is attached to the battery cell 2 and the glue filling plate 16, in the thickness direction of the overflow glue stopper 8, one end of the annular structure 83 is open and blocked by the surface of the battery cell 2, and the other end of the annular structure 83 is open and blocked by the glue filling plate 16, thereby forming a glue filling area, and the colloid is confined in the glue filling area.

[0054] Optionally, the overflow glue stopper 8 includes one or more annular structures 83, and each annular structure 83 is configured as a closed annular shape.

[0055] Optionally, the annular structure 83 is a combination of one or more of a circle, an ellipse, a polygon, and a multi-line mixed shape. The "multi-line mixed shape" here may refer to a combined shape of a straight line and an arc, a combined shape of arcs of different radians, a combined shape of a wavy line and a straight line, etc. Figure 6 Some optional shapes of the various annular structures 83 on the overflow glue stopper 8 are shown, including a circle, an ellipse, a quadrilateral, an octagon, a triangle, etc.

[0056] It should be further explained that the overflow glue stopper 8 is disposed between the battery cell 2 and the glue filling board 16, and the overflow glue stopper 8 is in contact with the battery cell 2 and the glue filling board 16, so as to reduce the colloid from the gap between the overflow glue stopper 8 and the battery cell 2 and the gap between the overflow glue stopper 8 and the glue filling board 16. In some embodiments, the overflow glue stopper 8 is bonded with the battery cell 2 and the glue filling board 16 to reduce the gap between the overflow glue stopper 8 and the battery cell 2 and the glue filling board 16; in other embodiments, the overflow glue stopper 8 is interference fit with the battery cell 2 and the glue filling board 16, that is, the thickness of the overflow glue stopper 8 is greater than the distance between the battery cell 2 and the glue filling board 16, so that the overflow glue stopper 8 is in contact with the battery cell 2 and the glue filling board 16 through the elastic deformation of the overflow glue stopper 8. Therefore, when the glue filling hole 161 is blocked or covered, the glue filling area enclosed by the glue overflow stopper 8, the battery cell 2 and the glue filling plate 16 is a closed area, and the glue is only poured into or overflows the glue filling area through the glue filling hole 161. For example, when the glue is poured into the glue filling area, the glue enters the glue filling area through the glue filling hole 161, and the battery cell 2 is connected to the battery cell shell 1 through the glue in the glue filling area; when the volume of the glue is larger than the volume of the glue filling area, excess glue can overflow from the glue filling hole 161.

[0057] In the related art, when the glue filling hole is blocked or covered, the glue filling area is enclosed between the glue overflow stopper, the battery cell and the glue filling plate, and the glue filling area is an open area with a gap. For example, the colloid enters the glue filling area through the glue filling hole. When there is a lot of colloid, the colloid in the glue filling area will further flow from the gap of the glue filling area to other positions of the accommodating cavity, which will interfere with other structures of the battery cell. In the present application, by setting the glue overflow stopper 8 to include an annular structure 83, when the volume of the colloid is larger than the volume of the glue filling area, the excess colloid can overflow from the glue filling hole 161 without entering the accommodating cavity 15, avoiding the disordered flow of the colloid in the accommodating cavity 15, improving the controllability of the glue filling, and reducing the interference between the colloid and the remaining structures in the battery cell 2; and, only changing the structural design of the glue overflow stopper 8 can reduce the impact on the structural design of the main components of the battery 10 and the existing process, and the changes in the equipment and process of the mass production line are small, saving costs.

[0058] In the related art, in order to control the amount of glue injection, an observation hole is provided on the battery cell housing, through which the amount of colloid used can be checked and inspected. In the present application, by providing an overflow glue stopper 8, excess colloid can overflow from the glue injection hole 161, and the battery cell housing 1 can eliminate the observation hole, reduce the processing technology, reduce the cost, and further reduce a series of processes for blocking the observation hole, reduce the assembly steps, and improve the assembly efficiency.

[0059] According to the battery 10 of the embodiment of the utility model, the battery cell 2 and the battery cell housing 1 are connected by the colloid in the glue filling area, which effectively improves the upper limit of the natural frequency of the battery 10, improves the mode of the battery 10, and enhances the reliability of the battery 10 under vibration conditions. The colloid is confined to the glue filling area by the overflow glue stopper 8, reducing the interference between the colloid and the remaining structures in the battery cell 2, thereby improving reliability; and, only changing the structural design of the overflow glue stopper 8 can reduce the impact on the structural design of the main components of the battery 10 and the existing process, and the changes in the mass production line equipment and process are small, saving costs.

[0060] like Figure 2As shown, in some embodiments, the battery cell 2 includes a battery cell body 25, a first pole ear 26, and a second pole ear 27. The first pole ear 26 and the second pole ear 27 are both connected to the battery cell body 25, that is, the first pole ear 26 is connected to the battery cell body 25, and the second pole ear 27 is connected to the battery cell body 25, and the battery cell body 25 includes an end face 253 for leading out the first pole ear 26 and the second pole ear 27. The battery cell body 25 also includes two large faces 250 arranged opposite to each other and two narrow faces 252 arranged opposite to each other, wherein the area of ​​the large face 250 is greater than the area of ​​the narrow face 252, and the overflow glue stopper 8 is arranged between at least one narrow face 252 and the glue filling plate 16. That is to say, the glue overflow stopper 8 is arranged between the narrow surface 252 and the glue filling plate 16, and there is a glue filling area between the glue overflow stopper 8, the glue filling plate 16 and the narrow surface 252. The battery cell shell 1 and the battery cell body 25 are bonded by the colloid in the glue filling area. In other words, the glue filling area is only formed between the narrow surface 252 and the relative glue filling plate 16, and is not arranged between the large surface 250 and the corresponding shell plate. Because the battery cell 2 will expand and thicken after use, if glue is poured on the large surface 250, uneven colloid will cause uneven force on the battery cell 2, affecting the safety of the battery cell 2. By arranging the glue overflow stopper 8 on the narrow surface 252, not only the stability and reliability of the connection between the battery cell 2 and the battery cell shell 1 can be improved, but also the safety of the battery cell 2 can be improved.

[0061] Reference Figure 2 The end surface 253 includes two ends, a first pole tab 26 is led out from one end surface 253 , and a second pole tab 27 is led out from the other end surface 253 .

[0062] Optionally, each glue filling area corresponds to one glue filling hole 161 .

[0063] Alternatively, each glue filling area may correspond to a plurality of glue filling holes 161 .

[0064] like Figure 2-Figure 5 As shown, for example, the glue filling plate 16 includes a first plate 11 and a second plate 12 that are arranged opposite to each other, and the glue filling hole 161 includes a first glue filling hole 111 opened on the first plate 11 and a second glue filling hole 121 opened on the second plate 12, the first glue filling hole 111 is connected to the accommodating chamber 15, and the second glue filling hole 121 is connected to the accommodating chamber 15. The two narrow surfaces 252 of the battery cell 2 include a first narrow surface 2521 and a second narrow surface 2522, and the glue filling area includes a first glue filling area and a second glue filling area, the first glue filling area is formed between the first narrow surface 2521, the overflow glue stopper 8 and the first plate 11, and the second glue filling area is formed between the second narrow surface 2522, the overflow glue stopper 8 and the second plate 12, the first glue filling area is connected to the first glue filling hole 111, and the second glue filling area is connected to the second glue filling hole 121.

[0065] like Figure 2-Figure 5As shown, preferably, the first glue filling area is filled with glue through the first glue filling hole 111, and the first plate 11 and the first narrow surface 252 are glued together, and the second glue filling area is filled with glue through the second glue filling hole 121, and the second plate 12 and the second narrow surface 252 are glued together; optionally, the first glue filling area is filled with glue through the first glue filling hole 111, and the first plate 11 and the first narrow surface 2521 are glued together, at this time, glue is not filled between the second narrow surface 2522 and the second plate 12, and there is no need to set an overflow glue stopper 8; optionally, glue is not filled between the first narrow surface 2521 and the first plate 11, and there is no need to set an overflow glue stopper 8, and the second glue filling area is filled with glue through the second glue filling hole 121, and the second plate 12 and the second narrow surface 2522 are glued together.

[0066] like Figure 1 , Figure 3-Figure 5 As shown, the battery cell housing 1 also includes a third plate 13 and a fourth plate 14, the third plate 13 and the fourth plate 14 are arranged opposite to each other, and one end of the third plate 13 and one end of the fourth plate 14 are connected to the first plate 11, and the other end of the third plate 13 and the other end of the fourth plate 14 are connected to the second plate 12, and the first plate 11, the third plate 13, the second plate 12 and the fourth plate 14 enclose a receiving cavity 15.

[0067] The single battery cell 2 is constructed as a flat structure, the battery cell shell 1 is constructed as a long strip structure, the size of the battery 10 in the first direction (F1 / F2) is much larger than its size in the second direction (F3 / F4) and in the third direction (F5 / F6), and at the same time, the size of the battery 10 in the second direction (F3 / F4) is smaller than the size of the battery 10 in the third direction (F5 / F6), so that the battery 10 is thinner as a whole, and the battery 10 is formed into a blade module. In this way, the areas of the third plate 13 and the fourth plate 14 are adapted to the large surface 250 of the battery cell body 25, and the areas of the first plate 11 and the second plate 12 are adapted to the narrow surface 252 of the battery cell body 25. After the narrow surfaces 252 on both sides of the battery 10 are filled with glue, the first-order natural frequency of the battery 10 is increased. For the battery pack 100 including the battery 10, the modal of the entire battery pack 100 is improved accordingly. When the battery pack 100 is mounted on the electrical equipment 1000 (taking the whole vehicle as an example) during the entire service life cycle vibration condition, the occurrence of resonance can be reduced, and ultimately the vibration resistance reliability, structural strength and service life of the entire battery pack 100 after being mounted on the electrical equipment 1000 can be improved.

[0068] Optionally, the battery cell housing 1 is an aluminum housing, which is low in cost and light in weight.

[0069] like Figure 2As shown, in some embodiments, the battery body 25 includes a pole core and a plastic film 251. The plastic film 251 includes a plastic film body 2511, and the plastic film body 2511 covers the pole core. The plastic film body 2511 can seal the pole core, and plays an important role in protecting the inside of the pole core and isolating the external environment. The first pole ear 26 and the second pole ear 27 can extend from the end of the plastic film body 2511, and the overflow glue stopper 8 is arranged between the plastic film body 2511 and the glue filling plate 16. Specifically, a glue filling area is enclosed between the plastic film body 2511, the glue filling plate 16 and the overflow glue stopper 8, and the plastic film body 2511 and the glue filling plate 16 are connected by a colloid. When the battery 10 vibrates, the vibration will be transmitted to the plastic film body 2511, and the vibration is transmitted to the entire plastic film 251, and the plastic film 251 has a stress concentration point. When the overflow glue stopper 8 is not provided, the colloid can connect the stress concentration point on the overmolding film 251 and the battery cell shell 1. Since the pole core wrapped by the overmolding film 251 has a large mass, the pole core has a certain displacement in all directions. In this state, the stress concentration point of the overmolding film 251 is pulled, which is more prone to fatigue wear or even direct wear, thereby causing electrolyte leakage, and thus the battery pack 100 has the risk of short circuit, arcing or even fire. By providing the overflow glue stopper 8, the colloid is restricted in the glue filling area, reducing the pulling force at the stress concentration point of the overmolding film 251, and the overmolding film 251 is protected accordingly, thereby avoiding or reducing the damage and leakage of the overmolding film 251 during use of the battery 10, that is, under the durable working condition of vibration of the battery 10, thereby reducing the risk of safety problems of the battery 10, and ultimately achieving the purpose of effectively improving the durability, reliability and safety of the battery 10.

[0070] The stress concentration areas on the overmolding film 251 include geometric discontinuities on the overmolding film 251 .

[0071] like Figure 2As shown, in some specific embodiments, the plastic film body 2511 is a polyhedral structure, and the intersection of two non-coplanar planes and / or the intersection of three non-coplanar planes of the plastic film body 2511 forms a plastic film vertex 2513, and the glue pouring area is separated from the plastic film vertex 2513, so that the glue pouring area avoids the plastic film vertex 2513. Specifically, the intersection of two non-coplanar planes of the plastic film body 2511 can form a first plastic film vertex 25131, and the intersection of three non-coplanar planes of the plastic film body 2511 can form a second plastic film vertex 25132. Here, the plastic film vertex 2513 is a geometrically discontinuous area on the plastic film body 2511, and the plastic film vertex 2513 can be damaged by stress concentration, fatigue wear and direct wear. By setting the overflow glue stopper 8, the colloid can be effectively prevented from connecting the top corner 2513 of the plastic film and the battery cell shell 1, so that the glue filling area avoids the top corner 2513 of the plastic film, and the glue filling area is separated from the top corner 2513 of the plastic film, thereby reducing the pulling force and displacement at the top corner 2513 of the plastic film, improving the reliability of the plastic film body 2511, reducing the risk of fatigue wear or leakage of the plastic film 251, and helping to avoid safety problems such as leakage, short circuit and arcing.

[0072] Optionally, the top corner 2513 of the overmolding film may be a rounded corner, a sharp corner, or a combination of a rounded corner and a sharp corner.

[0073] like Figure 1 and Figure 2 As shown, in some embodiments, the first electrode tab 26 and the second electrode tab 27 are located in a first direction (eg, Figure 1 In the first direction, the minimum distance between the overflow stopper 8 and the top corner 2513 of the plastic film is not less than 5% of the length of the plastic film body 2511 in the first direction, so that after the battery cell 2 is assembled into the battery cell housing 1, when the glue is injected through the injection hole 161, the distance of the glue in the first direction can be controlled.

[0074] Optionally, the minimum distance between the overflow stopper 8 and the top corner 2513 of the overmolding film may be 5%, 6%, 7%, 8%, 9%, 10%, etc., of the length of the overmolding film body 2511 in the first direction.

[0075] like Figure 2 As shown, in some embodiments, the overmolding film 251 further includes an overmolding film extension section 2512 , which is connected to the overmolding film body 2511 , and the first pole tab 26 and the second pole tab 27 may be connected to the overmolding film extension section 2512 .

[0076] like Figure 2As shown, for example, the overmolded film epitaxial section 2512 is connected to the first pole tab 26 via a first pole tab adhesive 261 , and the overmolded film epitaxial section 2512 is connected to the second pole tab 27 via a second pole tab adhesive 272 .

[0077] In some embodiments, the overflow glue stopper 8 is a combination of one or more of a foam structure, a rubber structure, and a silicone structure, so that the overflow glue stopper 8 can have high elasticity and sealing performance. The "multiple combinations" mentioned here means that part of the structure of the overflow glue stopper 8 is one of them and part of the structure of the overflow glue stopper 8 is another one or two of them, for example, the material of part of the structure of the overflow glue stopper 8 is a foam structure, and the material of another part of the structure is a rubber structure.

[0078] like Figure 1 and Figure 5 As shown, in some embodiments, each annular structure 83 includes a first stopper 81 and a second stopper 82, wherein two first stopsper 81 are arranged opposite to each other, and two second stopsper 82 are arranged opposite to each other, and the two first stopsper 81 and the two second stopsper 82 form a quadrilateral structure, and the first stopsper 81 and the second stopsper 82 are alternately connected, and the first stopper 81 is used to enclose the glue pouring area in the first direction, and the second stopper 82 is used to enclose the glue pouring area in the second direction, and the first direction and the second direction are different directions. The first stopsper 81 arranged opposite to each other can block the colloid from flowing to other positions of the first narrow surface 252 and the second narrow surface 252, and the second stopsper 82 arranged opposite to each other can block the colloid from flowing to the two large surfaces 250 along the second direction. The second direction here is the arrangement direction of the two large surfaces 250 (such as Figure 1 Optionally, the overflow glue stopper 8 is a quadrilateral structure. Of course, the overflow glue stopper 8 can also be other shapes, such as a hexagonal structure, an octagonal structure, etc.

[0079] like Figure 1 and Figure 5 As shown, for example, the first stopper 81 is constructed as a long strip, and the first stopper 81 is extended along the second direction; the second stopper 82 is constructed as a long strip, and the second stopper 82 is extended along the first direction; at least one first stopper 81 is arranged at one end of the second stopper 82, and at least one first stopper 81 is arranged at the other end of the second stopper 82.

[0080] like Figure 1 As shown, in some embodiments, a blocking piece 3 is provided at the glue injection hole 161 , and the blocking piece 3 can cover the corresponding glue injection hole 161 to prevent the glue from overflowing from the glue injection hole 161 .

[0081] Optionally, the blocking piece 3 is a PP (Polypropylene) sheet. The shape of the blocking piece 3 can be circular, square, triangular, etc.

[0082] like Figure 1 As shown, for example, a blocking piece 3 is provided at each of the first glue filling hole 111 and the second glue filling hole 121 , and the blocking piece 3 can cover the corresponding first glue filling hole 111 , and the blocking piece 3 can cover the corresponding second glue filling hole 121 .

[0083] like Figure 1 As shown, in some embodiments, there are multiple battery cells 2, and the multiple battery cells 2 are divided into multiple battery cell groups, and the multiple battery cell groups are arranged in sequence along the first direction F1 / F2, and each battery cell group is connected to at least one corresponding glue injection hole 161, and each of the battery cell groups includes one or more battery cells 2. Each battery cell group is provided with the above-mentioned glue injection hole 161. Figure 1 In the example, the number of cell groups is four, and the four cell groups include a first cell group 21, a second cell group 22, a third cell group 23, and a fourth cell group 24. The first cell group 21, the second cell group 22, the third cell group 23, and the fourth cell group 24 are arranged in sequence along the first direction F1 / F2. In other words, the plurality of cells 2 are divided into a plurality of columns, and each cell group is a column.

[0084] Two adjacent battery cell groups are separated by the protective cover 4. For example, two adjacent battery cell groups are connected in series, and the welding points of the two adjacent battery cell groups are supported by the protective cover 4.

[0085] like Figure 1 As shown, further, the first cell group 21 and the second cell group 22 are separated by the first protective cover 41, the second cell group 22 and the third cell group 23 are separated by the second protective cover 42, and the third cell group 23 and the fourth cell group 24 are separated by the third protective cover 43, thereby achieving physical isolation of any two adjacent cell groups among the first cell group 21, the second cell group 22, the third cell group 23, and the fourth cell group 24. Specifically, the first protective cover 41, the second protective cover 42, and the third protective cover 43 are all plastic parts, so that the electrical connection between the cell groups can be supported without interfering.

[0086] like Figure 1 As shown, a fourth protective cover 44 is provided at one end of the plurality of battery cell groups, and a protective spacer 45 and a connecting fixture 46 are provided at the other end. Figure 1 As shown, a fourth protective cover 44 is provided at one end of the fourth cell group 24 away from the third cell group 23, and a protective spacer 45 and a connecting fixture 46 are provided at one end of the first cell group 21 away from the second cell group 22. Specifically, the fourth protective cover 44, the protective spacer 45, and the connecting fixture 46 are all plastic parts, so that the insulation performance between the cell group and the cell housing 1 can be improved while supporting the cell group.

[0087] like Figure 1 and Figure 5As shown, in some embodiments of the present invention, the number of first glue injection holes 111 is not less than the number of battery cell groups, and the number of second glue injection holes 121 is not less than the number of battery cell groups. Each battery cell group is aligned with at least one first glue injection hole 111 and at least one second glue injection hole 121, so that each battery cell group can be effectively injected with glue, thereby improving the installation firmness of each battery cell group in the battery cell housing 11. Figure 1-Figure 7 In a specific example, the plurality of battery cell groups include a first battery cell group 21, a second battery cell group 22, a third battery cell group 23, and a fourth battery cell group 24, and the first battery cell group 21, the second battery cell group 22, the third battery cell group 23, and the fourth battery cell group 24 are arranged sequentially along the first direction F1 / F2. The number of the first glue injection holes 111 and the second glue injection holes 121 are the same as the number of battery cell groups, that is, the number of battery cell groups is four, the number of the first glue injection holes 111 is four, and the number of the second glue injection holes 121 is four, and each column of battery cell groups is aligned with one first glue injection hole 111 and one second glue injection hole 121. After glue is poured into the first glue pouring area through the first glue pouring hole 111 and glue is poured into the second glue pouring area through the second glue pouring hole 121, a first glue block 61 is formed between the first battery cell group 21 and the first board 11, a fifth glue block 65 is formed between the first battery cell group 21 and the second board 12, a second glue block 62 is formed between the second battery cell group 22 and the first board 11, a sixth glue block 66 is formed between the second battery cell group 22 and the second board 12, a third glue block 63 is formed between the third battery cell group 23 and the first board 11, a seventh glue block 67 is formed between the third battery cell group 23 and the second board 12, a fourth glue block 64 is formed between the fourth battery cell group 24 and the first board 11, and an eighth glue block 68 is formed between the fourth battery cell group 24 and the second board 12.

[0088] In some embodiments of the present invention, Figure 1 As shown, the first board 11 is located on the third direction F5 / F6 of the second board 12. For example, the first board 11 is located on the F3 side of the second board 12. In the second direction F3 / F4, multiple battery cells 2 are divided into multiple rows, each row of battery cells 2 is arranged along the first direction, and multiple rows of battery cells 2 are arranged in the second direction. The glue filling board 16 is located in the third direction of the multiple rows of battery cells 2. Each row of battery cells 2 is aligned with at least one first glue filling hole 111 and at least one second glue filling hole 121. The first direction F1 / F2, the second direction F3 / F4, and the third direction F5 / F6 are perpendicular to each other. Figure 1 In the example of FIG. 5 , in the second direction F3 / F4 , the plurality of battery cells 2 are divided into two rows, and the two rows of battery cells 2 are separated by a partition 51 . Each row of battery cells 2 is aligned with four first glue injection holes 111 and four second glue injection holes 121 .

[0089] In some embodiments of the present invention, Figure 1As shown, two adjacent rows of battery cells 2 are separated by a partition 51, and the partition 51 can support the two adjacent rows of battery cells 2. Optionally, the partition 51 is a plastic partition.

[0090] like Figure 1 As shown, in some embodiments of the utility model, the battery 10 may also include a die-cut protective film 52, the die-cut protective film 52 is located in the accommodating cavity 15, and the die-cut protective film 52 covers the battery cell 2, and an escape notch is provided on the die-cut protective film 52, and the projection of the glue filling area on the die-cut protective film 52 is at least partially located in the corresponding escape notch, and optionally, the projection of the first glue filling hole 111 and the second glue filling hole 121 on the die-cut protective film 52 is also at least partially located in the corresponding escape notch. In other words, the die-cut protective film 52 does not affect the glue filling to the first glue filling area and the second glue filling area, ensuring that the battery cell 2 and the battery cell housing 1 have a larger bonding area. The escape notch can be a long strip notch corresponding to the first glue filling area and the second glue filling area, and the long strip notch can correspond to multiple first glue filling holes 111 or multiple second glue filling holes 121.

[0091] like Figure 1 As shown, in some embodiments of the utility model, the battery 10 may further include a protective sheet, which is attached to the corner structure of the outer surface of the battery cell 2, and the corner structure includes an edge formed by the intersection of two non-coplanar planes and / or a corner formed by the intersection of three non-coplanar planes. For example, when the battery cell 2 is a rectangular parallelepiped structure, the eight vertex corners of the battery cell 2 are all attached with a protective sheet. Optionally, the protective sheet can be attached to the corner structure of the outer surface of the battery cell 2 by adhesive. The protective sheet can protect the corner structure and reduce the probability of damage to the battery cell 2.

[0092] exist Figure 1 In a specific example, the plurality of cell groups include a first cell group 21, a second cell group 22, a third cell group 23, and a fourth cell group 24, and the first cell group 21, the second cell group 22, the third cell group 23, and the fourth cell group 24 are arranged in sequence along the first direction F1 / F2. A first protective sheet 71 is provided at one end of the first cell group 21 away from the second cell group 22, the first cell group 21 and the second cell group 22 share the second protective sheet 72, the second cell group 22 and the third cell group 23 share the third protective sheet 73, the third cell group 23 and the fourth cell group 24 share the fourth protective sheet 74, and a fifth protective sheet 75 is provided at one end of the fourth cell group 24 away from the third cell group 23.

[0093] In some embodiments of the present invention, the battery 10 may further include a collection line 53, which at least partially extends into the accommodating cavity 15, and the battery cell 2 is connected to the collection line 53, and the collection line 53 is used to collect information of the battery cell 2, such as voltage, current and other information.

[0094] Optionally, the acquisition line 53 is a flexible acquisition line. In a specific example, the positive and negative voltages of the battery cell 2 are respectively acquired through the flexible acquisition line and sent to the battery controller.

[0095] Reference Figure 7 As shown, a battery pack 100 according to another embodiment of the present invention may include a tray 20 and the battery 10 of the above embodiment. The tray 20 has a mounting cavity, and the battery 10 is located in the mounting cavity.

[0096] In some embodiments of the present invention, Figure 7 As shown, the battery pack 100 may also include a heat exchange plate 30, which is mounted on the tray 20. The heat exchange plate 30 has a heat exchange channel, and a heat exchange medium is provided in the heat exchange channel. Optionally, the heat exchange medium may be a liquid or a gas, such as water or helium. When the battery 10 needs to be cooled down, a low-temperature heat exchange medium is introduced into the heat exchange plate 30 to absorb the heat of the battery 10; when the battery 10 needs to be heated up, a high-temperature heat exchange medium is introduced into the heat exchange plate 30 to transfer heat to the battery 10, thereby achieving thermal management of the battery 10. Figure 7 In the example, the heat exchange plate 30 is a water-cooled plate, the water inlet pipe 301 is connected to the water inlet of the heat exchange plate 30, and the water outlet pipe 302 is connected to the water outlet of the heat exchange plate 30. The water inlet pipe 301 and the water outlet pipe 302 can be connected to a thermal management system such as a water pump and a valve to realize the circulation of cooling water between the heat exchange channel and the outside.

[0097] Optionally, an installation cavity is formed above the heat exchange plate 30, and the battery 10 is located in the installation cavity, that is, the heat exchange plate 30 is located below the battery 10, the battery 10 is in direct contact with the heat exchange plate 30, or a heat-conducting structure is provided between the battery 10 and the heat exchange plate 30, and the heat-conducting structure may be a heat-conducting glue or a heat-conducting pad, etc.

[0098] In some other optional embodiments, the heat exchange plate 30 is located in other directions of the battery 10 , such as below or to the side of the battery 10 .

[0099] In some embodiments of the present invention, Figure 7 As shown, the battery pack 100 may further include a bottom guard plate 40 and a cover plate 50 , and the bottom guard plate 40 is installed at the bottom of the tray 20 .

[0100] Optionally, the heat exchange plate 30 is located below the battery 10, and the bottom guard plate 40 is located below the heat exchange plate 30. The bottom guard plate 40 can be used to protect the bottom of the heat exchange plate 30 to prevent sand and gravel under the battery pack 100 from penetrating the heat exchange plate 30. Optionally, the bottom guard plate 40 can be mounted on the tray 20 using fasteners such as bolts or rivets.

[0101] The cover plate 50 is installed on the tray 20 , and the battery 10 is located between the bottom guard plate 40 and the cover plate 50 . Optionally, the bottom guard plate 40 is located below the heat exchange plate 30 , the heat exchange plate 30 is located below the battery 10 , and the battery 10 is located between the heat exchange plate 30 and the cover plate 50 .

[0102] Optionally, the number of the battery 10 is one or more.

[0103] According to the battery pack 100 of the embodiment of the utility model, the battery cell 2 and the battery cell housing 1 are connected by the colloid in the glue filling area, which effectively improves the upper limit of the natural frequency of the battery 10, improves the mode of the battery 10, and enhances the reliability of the battery 10 under vibration conditions. The colloid is confined to the glue filling area by the overflow glue stopper 8, reducing the interference between the colloid and the remaining structures in the battery cell 2, thereby improving reliability; and, only changing the structural design of the overflow glue stopper 8 can reduce the impact on the structural design of the main components of the battery 10 and the existing process, and the changes in the mass production line equipment and process are small, saving costs.

[0104] In some embodiments of the present invention, Figure 7 As shown, there are multiple batteries 10, which are arranged in multiple rows and columns. The battery pack 100 also includes multiple pressing plates 60, which are located between the batteries 10 and the cover plate 50. The pressing plates 60 are connected to the tray 20, and the batteries 10 in the same row or column are connected to the corresponding pressing plates 60. Figure 8 In the specific example, multiple batteries 10 are arranged in multiple rows and four columns, the number of pressure plates 60 is four, and each column of batteries 10 is connected to a pressure plate 60. In this way, each column of batteries 10 is firmly connected to each other, and modular installation and disassembly are easy to achieve.

[0105] Optionally, the pressure plate 60 and the tray 20 may be connected and fixed by fasteners such as bolts and rivets, and the battery 10 and the corresponding pressure plate 60 may also be connected and fixed by fasteners such as bolts and rivets.

[0106] In some embodiments of the present invention, referring to Figure 7As shown, the battery pack 100 further includes an electrical component 70, which is mounted on the tray 20 and is located at one end of the battery 10 in the first direction F1 / F2. An insulating bracket 801 is provided at the other end of the battery 10 in the first direction F1 / F2. Both sides of the battery 10 in the second direction F3 / F4 are provided with a side insulation layer 802 and an insulating bracket 801. Both ends of the battery 10 in the first direction F1 / F2 are provided with an end insulation layer 803. The side insulation layer 802, the insulating bracket 801 and the end insulation layer 803 are all located in the mounting cavity. A top insulation layer 804 is provided between the cover plate 50 and the battery 10. By providing the side insulation layer 802, the end insulation layer 803 and the top insulation layer 804, the two ends, the two sides and the top of the battery 10 can be insulated, and the heat radiated outward by the battery 10 when working is reduced, thereby reducing the interference and influence of the heat of the battery 10 on the surrounding components of the battery pack 100. Specifically, the side insulation layer 802, the end insulation layer 803 and the top insulation layer 804 are insulation cotton. By providing the insulating bracket 801, physical isolation between the other end of the battery 10 in the first direction F1 / F2 and the two sides of the battery 10 in the second direction F3 / F4 and the battery cell housing 11 can be achieved, which is conducive to improving the safety performance of the battery pack 100. Specifically, the insulating bracket 801 is a plastic bracket, which is light in weight and low in cost.

[0107] Optionally, the cover plate 50 may be a steel cover plate 50 , and a sealing ring is provided at the connection between the cover plate 50 and the tray 20 to seal the installation cavity.

[0108] The acquisition line 53 of the battery 10 is connected to the electrical component 70, and the information of the battery cell 2 acquired through the acquisition line 53 can be summarized to the electrical component 70. Optionally, the electrical component 70 may include a distribution box, a controller, high and low voltage connectors, and the like.

[0109] Reference Figure 8 As shown, an electric device 1000 according to another embodiment of the present invention includes the battery pack 100 of the above embodiment.

[0110] Reference Figure 7 As shown, a lifting ear 201 may be provided outside the tray 20 , and the battery pack 100 may be installed on the main body of the electrical device 1000 by passing a bolt through the lifting ear 201 and then fastening it to the main body of the electrical device 1000 .

[0111] In some embodiments, after the battery pack 100 is installed on the electrical device 1000 , the first plate 11 is located above the second plate 12 , and the top and bottom of the battery cell 2 are both glued and fixed to the battery cell housing 11 .

[0112] Optionally, the electrical equipment 1000 is a vehicle, a machine tool, a household appliance, etc.

[0113] According to the electric device 1000 of the embodiment of the utility model, the battery cell 2 and the battery cell housing 1 are connected through the colloid in the glue filling area, which effectively improves the upper limit of the natural frequency of the battery 10, improves the mode of the battery 10, and enhances the reliability of the battery 10 under vibration conditions. The colloid is confined to the glue filling area by the overflow glue stopper 8, reducing the interference between the colloid and the remaining structures in the battery cell 2, thereby improving reliability; and, only changing the structural design of the overflow glue stopper 8 can reduce the impact on the structural design of the main components of the battery 10 and the existing process, and the changes in the mass production line equipment and process are small, saving costs.

[0114] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0115] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or can communicate with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0116] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine different embodiments or examples described in this specification.

[0117] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A battery, characterized in that: include: A battery cell shell (1), wherein a receiving cavity (15) is formed in the battery cell shell (1), and the battery cell shell (1) comprises a glue filling plate (16), wherein the glue filling plate (16) is provided with a glue filling hole (161), and the glue filling hole (161) is communicated with the receiving cavity (15); A battery cell (2), the battery cell (2) being installed in the accommodating cavity (15); An overflow glue stopper (8), the overflow glue stopper (8) being arranged between the battery cell (2) and the glue filling plate (16), a glue filling area being enclosed between the overflow glue stopper (8), the battery cell (2) and the glue filling plate (16), the glue filling hole (161) being connected to the glue filling area, and the overflow glue stopper (8) being used to limit the overflow of glue in the glue filling area.

2. The battery according to claim 1, characterized in that The glue overflow stopper (8) comprises at least one annular structure (83), the glue filling area being enclosed between the annular structure (83), the battery cell (2) and the glue filling plate (16), and the annular structure (83) being suitable for being fitted with at least one of the battery cell (2) and the glue filling plate (16).

3. The battery according to claim 2, characterized in that The battery cell (2) comprises a battery cell body (25), a first pole ear (26) and a second pole ear (27); the first pole ear (26) and the second pole ear (27) are both connected to the battery cell body (25); the battery cell body (25) comprises two large surfaces (250) arranged opposite to each other, two narrow surfaces (252) arranged opposite to each other and an end surface (253) for leading out the first pole ear (26) and the second pole ear (27); the area of ​​the large surface (250) is larger than the area of ​​the narrow surface (252); and the glue overflow stopper (8) is arranged between at least one of the narrow surfaces (252) and the glue filling plate (16).

4. The battery according to claim 3, characterized in that The battery cell body (25) comprises: Pole core; The overmolding film (251) comprises an overmolding film body (2511), wherein the overmolding film body (2511) covers the pole core, the first pole ear (26) and the second pole ear (27) are adapted to extend from the end of the overmolding film body (2511), and the overflow glue stopper (8) is arranged between the overmolding film body (2511) and the glue filling plate (16).

5. The battery according to claim 4, characterized in that The plastic-coating film body (2511) is a polyhedral structure, and the intersection of two non-coplanar planes and / or the intersection of three non-coplanar planes of the plastic-coating film body (2511) forms a plastic-coating film vertex angle (2513), and the glue-pouring area is separated from the plastic-coating film vertex angle (2513) so that the glue-pouring area avoids the plastic-coating film vertex angle (2513).

6. The battery according to claim 5, characterized in that The first pole ear (26) and the second pole ear (27) are located in a first direction of the overmolding film body (2511), and in the first direction, the minimum distance between the overflow stopper (8) and the top corner (2513) of the overmolding film is not less than 5% of the length of the overmolding film body (2511) in the first direction.

7. The battery according to claim 1, characterized in that The overflow glue stopper (8) is a combination of one or more of a foam structure, a rubber structure, and a silicone structure.

8. The battery according to any one of claims 2 to 6, characterized in that: Each of the annular structures (83) is configured as a closed annular shape.

9. The battery according to claim 8, characterized in that Each of the annular structures (83) comprises a first stopper (81) and a second stopper (82), wherein the first stoppers (81) are two and are arranged opposite to each other, and the second stoppers (82) are two and are arranged opposite to each other, and the two first stoppers (81) and the two second stoppers (82) form a quadrilateral structure, and the first stopper (81) is used to enclose the glue pouring area in a first direction, and the second stopper (82) is used to enclose the glue pouring area in a second direction, and the first direction and the second direction are different directions.

10. The battery according to claim 1, characterized in that A sealing piece (3) is provided at the glue injection hole (161), and the sealing piece (3) is used to seal the corresponding hole.

11. The battery according to claim 1, characterized in that The number of the battery cells (2) is multiple, and the multiple battery cells (2) are divided into multiple battery cell groups. The multiple battery cell groups are arranged in sequence along a first direction, each of the battery cell groups is correspondingly connected to at least one of the glue injection holes (161), and each of the battery cell groups includes one or more of the battery cells (2).

12. The battery according to claim 11, characterized in that Two adjacent battery cell groups are separated by a protective cover (4).

13. The battery according to claim 11, characterized in that The plurality of battery cells (2) are divided into a plurality of rows, the battery cells (2) in each row are arranged along the first direction, the plurality of rows of battery cells (2) are arranged in the second direction, the glue injection plate (16) is located in a third direction of the plurality of rows of battery cells (2), and the battery cells (2) in each row are aligned with at least one of the glue injection holes (161), wherein the first direction, the second direction, and the third direction are perpendicular to each other.

14. The battery according to claim 13, characterized in that Two adjacent rows of battery cells (2) are separated by a partition (51).

15. The battery according to claim 1, characterized in that The battery (10) further comprises a die-cut protective film (52), the die-cut protective film (52) being located in the accommodating cavity (15) and covering the battery cell (2), the die-cut protective film (52) being provided with an escape notch, and the projection of the glue filling area on the die-cut protective film (52) being at least partially located in the corresponding escape notch.

16. The battery according to claim 1, characterized in that The battery (10) further comprises a protective sheet, which is attached to the corner structure of the outer surface of the battery cell (2), wherein the corner structure comprises an edge formed by the intersection of two non-coplanar planes and / or a corner formed by the intersection of three non-coplanar planes.

17. The battery according to claim 1, characterized in that The battery (10) further comprises a collection line (53), the collection line (53) at least partially extending into the accommodating cavity (15), and the battery cell (2) is connected to the collection line (53).

18. A battery pack, characterized in that: include: A tray (20), wherein the tray (20) has a mounting cavity therein; and The battery (10) according to any one of claims 1 to 17, wherein the battery (10) is located in the mounting cavity.

19. The battery pack according to claim 18, characterized in that: The battery (10) further comprises: a heat exchange plate (30), the heat exchange plate (30) being mounted on the tray (20), the heat exchange plate (30) having a heat exchange channel therein, the battery (10) being in direct contact with the heat exchange plate (30), or a heat conduction structure being provided between the battery (10) and the heat exchange plate (30).

20. The battery pack according to claim 18 or 19, characterized in that: The battery (10) further comprises: A bottom guard plate (40), wherein the bottom guard plate (40) is installed at the bottom of the tray (20); and A cover plate (50), wherein the cover plate (50) is mounted on the tray (20), and the battery (10) is located between the bottom guard plate (40) and the cover plate (50).

21. The battery pack according to claim 20, characterized in that: The number of the batteries (10) is multiple and they are arranged in multiple rows and columns. The battery pack (100) further comprises multiple pressure plates (60). The pressure plates (60) are located between the batteries (10) and the cover plate (50). The pressure plates (60) are connected to the tray (20). The batteries (10) in the same row or column are connected to the corresponding pressure plates (60).

22. The battery pack according to claim 20, characterized in that: The battery pack (100) further comprises an electrical component (70), wherein the electrical component (70) is mounted on the tray (20) and is located at one end of the battery (10) in a first direction, an insulating bracket (801) is provided at the other end of the battery (10) in the first direction, and both sides of the battery (10) in a second direction are provided with side insulation layers (802) and insulation brackets (801), and both ends of the battery (10) in the first direction are provided with end insulation layers (803), the side insulation layers (802), the insulation brackets (801) and the end insulation layers (803) are all located in the mounting cavity, and a top insulation layer (804) is provided between the cover plate (50) and the battery (10).

23. An electrical equipment, characterized in that: A battery pack (100) comprising any one of claims 18 to 22.

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