A non-uniform battery assembly

Abstract

The application discloses a non-uniform battery assembly, which comprises a battery sheet, a plastic film and a packaging plate. The plastic film is arranged on two sides of the battery sheet, and the packaging plate is arranged outside the plastic film. The plate-shaped structure formed by the battery sheet and the plastic film is a structure with uneven thickness, and / or the plate-shaped structure formed by the packaging plate and the plastic film is a structure with uneven thickness, and / or the plate-shaped structure formed by the battery sheet, the plastic film and the packaging plate is a structure with uneven thickness. Any one of the plate-shaped structure formed by the battery sheet and the plastic film, the plate-shaped structure formed by the packaging plate and the plastic film and the plate-shaped structure formed by the battery sheet, the plastic film and the packaging plate is formed as a structure with uneven thickness, so that the manufacturing cost of the battery assembly is reduced while the reliability is ensured, and the performance selection flexibility of the battery assembly is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of batteries, in particular to a non-uniform battery assembly. BACKGROUND

[0002] The battery assembly generally has two kinds of single glass assembly and double glass assembly, the single glass assembly includes glass plate, battery piece and back plate which are sequentially stacked, and the double glass assembly includes glass plate, battery piece and glass plate which are sequentially stacked. The existing glass plate, battery piece and back plate have the same plate shape, and the manufacturing cost of this structure is relatively high and the reliability is relatively poor. SUMMARY

[0003] The purpose of the present application is to provide a non-uniform battery assembly, which has relatively low manufacturing cost and good reliability.

[0004] To achieve the above technical effects, the technical scheme of the non-uniform battery assembly of the present application is as follows:

[0005] The present application discloses a non-uniform battery assembly, comprising: a battery piece; a film, which is arranged on both sides of the battery piece; an encapsulation plate, which is located outside the film; the plate shape structure formed by the battery piece and the film is a structure with uneven thickness, and / or; the plate shape structure formed by the encapsulation plate and the film is a structure with uneven thickness, and / or; the plate shape structure formed by the battery piece, the film and the encapsulation plate is a structure with uneven thickness.

[0006] In some embodiments, the encapsulation plate has a first wall surface arranged towards the film and a second wall surface arranged away from the film; wherein at least one of the first wall surface and the second wall surface is a first non-plane.

[0007] In some specific embodiments, the first wall surface and the second wall surface have the same shape and are both the first non-plane.

[0008] In some specific embodiments, at least one of the first wall surface and the second wall surface is the first non-plane, and the first wall surface and the second wall surface have different shapes.

[0009] In some embodiments, the film has a third wall surface arranged towards the battery piece and a fourth wall surface arranged away from the battery piece; wherein at least one of the third wall surface and the fourth wall surface is a second non-plane.

[0010] In some specific embodiments, the third wall surface and the fourth wall surface have the same shape and are both the second non-plane.

[0011] In some specific embodiments, at least one of the third wall surface and the fourth wall surface is the second non-planar surface, and the third wall surface and the fourth wall surface have different shapes.

[0012] In some embodiments, the packaging plate comprises a back plate located below the battery piece and a first protective plate located above the battery piece, or the packaging plate comprises two second protective plates made of the same material.

[0013] In some embodiments, a first filler is arranged between the battery piece and the adhesive film, so that the plate-shaped structure formed by the battery piece and the adhesive film is a structure with uneven thickness, and / or:

[0014] A second filler is arranged between the adhesive film and the packaging plate, so that the plate-shaped structure formed by the packaging plate and the adhesive film is a structure with uneven thickness.

[0015] In some embodiments, the adhesive film is symmetrically arranged with respect to the battery piece, and / or the packaging plate is symmetrically arranged with respect to the battery piece.

[0016] The non-uniform battery assembly of the present embodiment has the following advantages: since any one of the plate-shaped structure formed by the battery piece and the adhesive film, the plate-shaped structure formed by the packaging plate and the adhesive film, and the plate-shaped structure formed by the battery piece, the adhesive film and the packaging plate is formed as a structure with uneven thickness, the manufacturing cost of the battery assembly is reduced while the reliability is ensured, and the performance selection flexibility of the battery assembly is increased.

[0017] Additional aspects and advantages of the present application will be in part apparent and in part pointed out hereinafter. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is a structural schematic diagram of a non-uniform battery assembly of embodiment one of the present application;

[0019] Figure 2 is a structural schematic diagram of a non-uniform battery assembly of embodiment two of the present application;

[0020] Figure 3 is a structural schematic diagram of a non-uniform battery assembly of embodiment three of the present application;

[0021] Figure 4 is a structural schematic diagram of a non-uniform battery assembly of embodiment four of the present application;

[0022] Figure 5 is a structural schematic diagram of a non-uniform battery assembly of embodiment five of the present application;

[0023] Figure 6is a structural schematic view of a non-uniform battery assembly of embodiment six of the present application;

[0024] Figure 7 is a structural schematic view of a non-uniform battery assembly of embodiment seven of the present application;

[0025] Figure 8 is a structural schematic view of a non-uniform battery assembly of embodiment eight of the present application;

[0026] Figure 9 is a structural schematic view of a non-uniform battery assembly of embodiment nine of the present application;

[0027] Figure 10 is a structural schematic view of a non-uniform battery assembly of embodiment ten of the present application;

[0028] Figure 11 is a structural schematic view of a non-uniform battery assembly of embodiment eleven of the present application;

[0029] Reference signs:

[0030] 1, battery piece;

[0031] 2, adhesive film; 21, third wall surface; 22, fourth wall surface;

[0032] 31, first protective plate; 32, back plate; 33, second protective plate; 301, first wall surface; 302, second wall surface. DETAILED DESCRIPTION

[0033] In order to make the technical problems solved by the present application, the technical solutions adopted and the technical effects reached more clear, the technical solutions of the present application will be further described below in combination with the drawings and through specific embodiments.

[0034] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0035] In addition, the features defined as "first" and "second" can explicitly or implicitly include one or more of the features, which are used to distinguish the described features, and there is no order or difference. In the description of the present application, unless otherwise specified, the meaning of "multiple" is two or more.

[0036] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connection" should be understood in a broad sense, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or the internal communication of two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0037] The specific structure of the non-uniform battery assembly of the embodiment of the present application is described below. Figures 1-11 The specific structure of the non-uniform battery assembly of the embodiment of the present application is described below.

[0038] The present application discloses a kind of non-uniform battery assembly, as shown in Figures 1-11 The non-uniform battery assembly includes battery piece 1, adhesive film 2 and packaging plate, battery piece 1 is the plane board of thickness uniform distribution, adhesive film 2 is arranged at the two sides of battery piece 1, and the packaging plate is located at the outside of two adhesive films 2. The plate-shaped structure formed by battery piece 1 and adhesive film 2 is a structure with uneven thickness, and / or; The plate-shaped structure formed by the packaging plate and the adhesive film 2 is a structure with uneven thickness, and / or; The plate-shaped structure formed by battery piece 1, adhesive film 2 and packaging plate is a structure with uneven thickness.

[0039] First of all, it needs to be pointed out that the adhesive film 2 is distributed on both sides of the battery piece 1, and in the present application, the number of adhesive films 2 on both sides of the battery piece 1 can be one or two, and the number of adhesive films 2 can be selected according to actual needs. Similarly, the number of packaging plates of adhesive film 2 can be one or two, and the number of packaging plates can be selected according to actual needs. For the convenience of description, in the following application text, the number of adhesive films 2 and packaging plates is taken as two for description.

[0040] It needs to be supplemented that in the present embodiment, the thickness of the plate-shaped structure formed by the battery piece 1 and the adhesive film 2 is: a straight line perpendicular to the battery piece 1 is drawn, and the interval between the intersection of the straight line and the upper surface (lower surface) of the adhesive film 2 and the intersection of the straight line and the lower surface (upper surface) of the battery piece 1, in the present embodiment, the thickness of the plate-shaped structure formed by the packaging plate and the adhesive film 2 is: a straight line perpendicular to the battery piece 1 is drawn, and the interval between the intersection of the straight line and the lower surface (upper surface) of the adhesive film 2 and the intersection of the straight line and the upper surface (upper surface) of the packaging plate, the thickness of the plate-shaped structure formed by the battery piece 1, the adhesive film 2 and the packaging plate is: a straight line perpendicular to the battery piece 1 is drawn, and the interval between the intersection of the straight line and the upper surface of the upper packaging plate and the intersection of the straight line and the upper surface of the lower packaging plate.

[0041] It is understandable that the plate structure formed by the battery cell 1 and the encapsulant film 2 is a structure with uneven thickness, and / or; the plate structure formed by the encapsulation plate and the encapsulant film 2 is a structure with uneven thickness, and / or; the plate structure formed by the battery cell 1, the encapsulant film 2, and the encapsulation plate is a structure with uneven thickness. In other words, there are four possibilities for the plate shape of the battery cell 1, the encapsulant film 2, and the encapsulation plate. The first possibility is: Figures 1-4 As shown, the battery cell 1 and the encapsulation board are planar plates with uniform thickness, while the encapsulating film 2 is a plate-shaped structure with uneven thickness; the second type is, as shown... Figures 5-8 As shown, the battery cell 1 and the encapsulant film 2 are planar plates with uniform thickness, while the encapsulation plate is a plate-shaped structure with uneven thickness; the third type is: as shown in the figure. Figure 9 As shown, the battery cell 1 is a flat plate with uniform thickness, while the encapsulation plate and encapsulating film 2 are plate-shaped structures with non-uniform thickness. Figures 10-1 As shown, the fourth type is: the battery cell 1, the encapsulant film 2, and the encapsulation plate are all uniformly thick floor-shaped structures, while the plate-shaped structure formed by the battery cell 1 and the encapsulant film 2, the plate-shaped structure formed by the encapsulation plate and the encapsulant film 2, and the plate-shaped structure formed by the battery cell 1, the encapsulant film 2, and the encapsulation plate are all of uneven thickness structures.

[0042] This invention, with its uneven thickness in some or all parts of the structure, reduces costs while ensuring reliability and increasing the flexibility of battery module performance selection. For example, the film 2 or encapsulation plate is thicker at the edge of the battery module or at the lead outlet of the junction box to ensure reliability, while the film 2 or encapsulation plate is thinner further away from the edge to reduce the cost and weight of the battery module. Alternatively, for frameless battery modules, the thickness of the edge encapsulation plate can be significantly increased to mitigate edge penetration, thereby ensuring the encapsulation performance of the battery module.

[0043] In some embodiments, such as Figures 1-4 , Figure 10 As shown, the encapsulation plate has a first wall surface 301 facing the adhesive film 2 and a second wall surface 302 facing away from the adhesive film 2; wherein at least one of the first wall surface 301 and the second wall surface 302 is a first non-planar surface. This reduces costs while ensuring reliability and increases the flexibility of performance selection for battery modules.

[0044] In some specific embodiments, such as Figures 1-4 As shown, the first non-plane includes any one of a curved surface, a wavy surface, or a toothed surface. Of course, the shape of the first non-plane can also be selected according to actual needs, and is not limited to the curved surface, wavy surface, or toothed surface structure of this embodiment.

[0045] In some specific embodiments, such as Figures 1-4As shown, at least one of the first wall surface 301 and the second wall surface 302 is a first non-planar surface and has a different shape. It can be understood that, in this case, the adhesive film 2 is a plate-shaped structure with uneven thickness. Under this structure, the encapsulation board can be designed in shape according to actual needs; the encapsulation board can be a plate-shaped structure with uneven thickness or a plate-shaped structure with uniform thickness.

[0046] In some specific embodiments, as shown in 10, both the first wall surface 301 and the second wall surface 302 are first non-planar surfaces and have the same shape. It can be understood that, in this case, the adhesive film 2 is a plate-shaped structure with uniform thickness. Under this structure, the encapsulation board can be designed in shape according to actual needs; the encapsulation board can be a plate-shaped structure with uneven thickness or a plate-shaped structure with uniform thickness.

[0047] In some embodiments, such as Figures 5-8 As shown, the encapsulant film 2 has a third wall surface 21 facing the battery cell 1 and a fourth wall surface 22 facing away from the battery cell 1; wherein at least one of the third wall surface 21 and the fourth wall surface 22 is a second non-planar surface. This reduces costs while ensuring reliability and increases the flexibility of performance selection for the battery module.

[0048] In some specific embodiments, such as Figures 5-8 , Figure 1 As shown, the second non-plane includes any one of a curved surface, a wavy surface, or a toothed surface. Of course, the shape of the second non-plane can also be selected according to actual needs, and is not limited to the curved surface, wavy surface, or toothed surface structure of this embodiment.

[0049] In some specific embodiments, such as Figures 5-8 As shown, at least one of the third wall surface 21 and the fourth wall surface 22 is a second non-planar structure and has a different shape. It can be understood that, in this case, the encapsulation board is a plate-shaped structure with uneven thickness. Under this structure, the adhesive film 2 can be designed in shape according to actual needs; the adhesive film 2 can be a plate-shaped structure with uneven thickness or a plate-shaped structure with uniform thickness.

[0050] In some specific embodiments, such as Figure 1 As shown, both the third wall surface 21 and the fourth wall surface 22 are second non-planar surfaces and have the same shape. It can be understood that, at this point, the encapsulation board is a plate-shaped structure with uniform thickness. Under this structure, the adhesive film 2 can be designed in shape according to actual needs; the adhesive film 2 can be a plate-shaped structure with uneven thickness or a plate-shaped structure with uniform thickness.

[0051] In some embodiments, such as Figures 1-4As shown, the encapsulation board includes a backplate 32 and a first protective plate 31. The backplate 32 is located below the battery cell 1, and the first protective plate 31 is located above the battery cell 1. It can be understood that the first protective plate 31 can effectively encapsulate the battery cell 1, while the backplate 32 can improve the strength of the entire battery module and extend the service life of the battery module.

[0052] In some specific embodiments, the first protective plate 31 is a glass plate. Of course, in other embodiments of the present invention, the first protective plate 31 may also be made of other materials such as synthetic resin, and is not limited to the glass plate of this embodiment.

[0053] In some embodiments, such as Figures 5-8 As shown, the encapsulation board includes two second protective plates 33 made of the same material. This facilitates the production of the encapsulation board, thereby reducing the manufacturing cost of the entire non-uniform battery module.

[0054] In some specific embodiments, the second protective plate 33 is a glass plate. Of course, in other embodiments of the present invention, the second protective plate 33 may also be made of other materials such as synthetic resin, and is not limited to the glass plate of this embodiment.

[0055] In some embodiments, the adhesive film 2 is symmetrically arranged with respect to the battery cell 1, and / or the encapsulation plate is symmetrically arranged with respect to the battery cell 1. It is understood that if the adhesive film 2 and the encapsulation plate are symmetrically arranged with respect to the battery cell 1, it means that the structures of the adhesive film 2 and the encapsulation plate located on both sides of the battery cell 1 are the same, which reduces the variety of shapes of the adhesive film 2 and the encapsulation plate, thereby reducing the manufacturing cost of the battery cell 1.

[0056] In some embodiments, a first filler is provided between the battery cell 1 and the adhesive film 2, so that the plate-shaped structure formed by the battery cell 1 and the adhesive film 2 has a non-uniform thickness. It is understood that in actual use, both the battery cell 1 and the adhesive film 2 can be planar plates. By filling with the first filler, the plate-shaped structure formed by the battery cell 1 and the adhesive film 2 has a non-uniform thickness, thereby simplifying the structure of the adhesive film 2 and reducing the manufacturing cost of the adhesive film 2.

[0057] In some embodiments, a second filler is provided between the adhesive film 2 and the encapsulation plate to make the plate structure formed by the encapsulation plate and the adhesive film 2 have a non-uniform thickness. It is understood that in actual use, both the encapsulation plate and the adhesive film 2 can be planar plates. By filling with the first filler, the plate structure formed by the encapsulation plate and the adhesive film 2 has a non-uniform thickness, thereby simplifying the structure of the adhesive film 2 and the encapsulation plate and reducing the manufacturing cost of the adhesive film 2 and the encapsulation plate.

[0058] The following is for reference. Figures 1-11 The specific structure of a non-uniform battery assembly according to eleven specific embodiments of the present invention is described.

[0059] Example 1:

[0060] like Figure 1 As shown, the non-uniform battery assembly of this embodiment includes a battery cell 1, two adhesive films 2, a first protective plate 31, and a back plate 32. The battery cell 1 is a flat plate, and there are two adhesive films 2, which are respectively disposed on both sides of the battery cell 1. Each adhesive film 2 has a third wall surface 21 facing the battery cell 1 and a fourth wall surface 22 facing away from the battery cell 1. The fourth wall surface 22 is an arc-shaped surface protruding towards the battery cell 1. The first protective plate 31 and the back plate 32 are both flat plates and are located on the outer sides of the two adhesive films 2, respectively. The first protective plate 31 is a glass plate.

[0061] It should be noted that implementation one can also include various extended modes. For example, in some embodiments, the fourth wall surface 22 is an arc surface, while the third wall surface 21 is a plane; in some embodiments, both the third wall surface 21 and the fourth wall surface 22 are arc surfaces; in some embodiments, the two adhesive films 2 are symmetrically arranged about the battery cell 1; in some embodiments, the curvature of the third wall surface 21 and the fourth wall surface 22 of the two adhesive films 2 is different.

[0062] Example 2:

[0063] like Figure 2 As shown, the non-uniform battery assembly of this embodiment includes a battery cell 1, two adhesive films 2, a first protective plate 31, and a back plate 32. The battery cell 1 is a flat plate, and there are two adhesive films 2, which are respectively disposed on both sides of the battery cell 1. Each adhesive film 2 has a third wall surface 21 facing the battery cell 1 and a fourth wall surface 22 facing away from the battery cell 1. The third wall surface 21 is flat, and the fourth wall surface 22 is corrugated. The first protective plate 31 and the back plate 32 are both flat plates and are located on the outer sides of the two adhesive films 2, respectively. The first protective plate 31 is a glass plate.

[0064] It should be noted that implementation two can also include various extended modes. For example, in some embodiments, the fourth wall 22 is a wavy surface, while the third wall 21 is a flat surface; in some embodiments, both the third wall 21 and the fourth wall 22 are wavy surfaces; in some embodiments, the two adhesive films 2 are symmetrically arranged about the battery cell 1; in some embodiments, the wavy shapes of the third wall 21 and the fourth wall 22 of the two adhesive films 2 are different.

[0065] Example 3:

[0066] like Figure 3As shown, the non-uniform battery assembly of this embodiment includes a battery cell 1, two adhesive films 2, a first protective plate 31, and a back plate 32. The battery cell 1 is a flat plate, and there are two adhesive films 2, which are respectively disposed on both sides of the battery cell 1. Each adhesive film 2 has a third wall surface 21 facing the battery cell 1 and a fourth wall surface 22 facing away from the battery cell 1. The third wall surface 21 is flat, and the fourth wall surface 22 is a toothed surface. The first protective plate 31 and the back plate 32 are both flat plates and are located on the outer sides of the two adhesive films 2, respectively. The first protective plate 31 is a glass plate.

[0067] It should be noted that implementation three can also include various extended modes. For example, in some embodiments, the fourth wall surface 22 is a toothed surface, while the third wall surface 21 is a plane; in some embodiments, both the third wall surface 21 and the fourth wall surface 22 are toothed surfaces; in some embodiments, the two adhesive films 2 are symmetrically arranged about the battery cell 1; in some embodiments, the wave shapes of the third wall surface 21 and the fourth wall surface 22 of the two adhesive films 2 are different.

[0068] Example 4:

[0069] like Figure 4 As shown, the non-uniform battery assembly of this embodiment includes a battery cell 1, two adhesive films 2, a first protective plate 31, and a back plate 32. The battery cell 1 is a flat plate, and there are two adhesive films 2, which are respectively disposed on both sides of the battery cell 1. Each adhesive film 2 has a third wall surface 21 facing the battery cell 1 and a fourth wall surface 22 facing away from the battery cell 1. The third wall surface 21 of the adhesive film 2 located on the upper battery cell 1 is flat, and the fourth wall surface 22 is an arc surface. The third wall surface 21 of the adhesive film 2 located on the lower battery cell 1 is flat, and the fourth wall surface 22 is flat. The first protective plate 31 and the back plate 32 are both flat plates and are respectively located on the outer sides of the two adhesive films 2. The first protective plate 31 is a glass plate.

[0070] It should be further noted that implementation four can also include various extended modes. For example, in some embodiments, the fourth wall surface 22 of the adhesive film 2 located on the upper battery cell 1 can be a toothed surface or a wavy surface, while the third wall surface 21 is a plane; and the third wall surface 21 and the fourth wall surface 22 of the adhesive film 2 located on the lower battery cell 1 are both planes.

[0071] Example 5:

[0072] like Figure 5As shown, the non-uniform battery assembly of this embodiment includes a battery cell 1, two adhesive films 2, and two second protective plates 33. The battery cell 1 and the adhesive films 2 are flat plates. There are two adhesive films 2, which are respectively disposed on both sides of the battery cell 1. The second protective plate 33 has a first wall surface 301 facing the adhesive films 2 and a second wall surface 302 facing away from the adhesive films 2. The second wall surface 302 is an arc surface. Both second protective plates 33 are glass plates.

[0073] It should be noted that implementation five can also include various extended modes. For example, in some embodiments, the first wall surface 301 is an arc surface, while the second wall surface 302 is a plane; in some embodiments, both the first wall surface 301 and the second wall surface 302 are arc surfaces; in some embodiments, the two second protective plates 33 are symmetrically arranged about the battery cell 1; in some embodiments, the curvature of the first wall surface 301 and the second wall surface 302 of the two second protective plates 33 is different.

[0074] Example 6:

[0075] like Figure 6 As shown, the non-uniform battery assembly of this embodiment includes a battery cell 1, two adhesive films 2, and two second protective plates 33. The battery cell 1 and the adhesive films 2 are flat plates. There are two adhesive films 2, which are respectively disposed on both sides of the battery cell 1. The second protective plate 33 has a first wall surface 301 facing the adhesive films 2 and a second wall surface 302 facing away from the adhesive films 2. The second wall surface 302 is a corrugated surface. Both second protective plates 33 are glass plates.

[0076] It should be noted that implementation six can also include various extended modes. For example, in some embodiments, the first wall surface 301 is a wavy surface, while the second wall surface 302 is a flat surface; in some embodiments, both the first wall surface 301 and the second wall surface 302 are wavy surfaces; in some embodiments, the two second protective plates 33 are symmetrically arranged about the battery cell 1; in some embodiments, the curvature of the first wall surface 301 and the second wall surface 302 of the two second protective plates 33 is different.

[0077] Example 7:

[0078] like Figure 7 As shown, the non-uniform battery assembly of this embodiment includes a battery cell 1, two adhesive films 2, and two second protective plates 33. The battery cell 1 and the adhesive films 2 are planar plates. There are two adhesive films 2, which are respectively disposed on both sides of the battery cell 1. The second protective plate 33 has a first wall surface 301 facing the adhesive films 2 and a second wall surface 302 facing away from the adhesive films 2. The second wall surface 302 is a toothed surface. Both second protective plates 33 are glass plates.

[0079] It should be noted that implementation seven can also include various extended modes. For example, in some embodiments, the first wall surface 301 is a toothed surface, while the second wall surface 302 is a plane; in some embodiments, both the first wall surface 301 and the second wall surface 302 are toothed surfaces; in some embodiments, the two second protective plates 33 are symmetrically arranged about the battery cell 1; in some embodiments, the curvature of the first wall surface 301 and the second wall surface 302 of the two second protective plates 33 is different.

[0080] Example 8:

[0081] like Figure 8 As shown, the non-uniform battery assembly of this embodiment includes a battery cell 1, two adhesive films 2, and two second protective plates 33. The battery cell 1 and the adhesive films 2 are planar plates. There are two adhesive films 2, which are respectively disposed on both sides of the battery cell 1. The second protective plates 33 have a first wall surface 301 facing the adhesive films 2 and a second wall surface 302 facing away from the adhesive films 2. The first wall surface 301 of the second protective plate 33 located on the upper battery cell 1 is planar, and the second wall surface 302 is an arc surface. The first wall surface 301 of the second protective plate 33 located on the lower battery cell 1 is planar, and the second wall surface 302 is planar.

[0082] It should be noted that implementation eight can also include various extended modes. For example, in some embodiments, the second wall surface 302 of the second protection plate 33 located on the upper battery cell 1 can be a toothed surface or a wavy surface, while the first wall surface 301 is a plane; and the first wall surface 301 and the second wall surface 302 of the second protection plate 33 located on the lower battery cell 1 are both planes.

[0083] Example 9:

[0084] The non-uniform battery assembly of this embodiment includes a battery cell 1, two adhesive films 2, and two second protective plates 33. The battery cell 1 and the adhesive films 2 are planar plates. There are two adhesive films 2, which are respectively disposed on both sides of the battery cell 1. The second protective plates 33 have a first wall surface 301 facing the adhesive films 2 and a second wall surface 302 facing away from the adhesive films 2. The adhesive films 2 have a third wall surface 21 facing the battery cell 1 and a fourth wall surface 22 facing away from the battery cell 1. Among them, the first wall surface 301 and the third wall surface 21 are planar, and the second wall surface 302 and the fourth wall surface 22 are arc surfaces.

[0085] It should be noted that Embodiment Nine also includes various extended modes. In some embodiments, the first wall surface 301 and the third wall surface 21 are planar, and the second wall surface 302 and the fourth wall surface 22 are wavy or toothed surfaces; in some embodiments, the first wall surface 301 and the third wall surface 21 are curved, wavy, or toothed surfaces, and the second wall surface 302 and the fourth wall surface 22 are planar. In some embodiments, the two adhesive films 2 and the two second protective plates 33 can be symmetrical about the battery cell 1; in some embodiments, the first wall surface 301 and the third wall surface 21 are curved, wavy, or toothed surfaces, but the first wall surface 301 and the third wall surface 21 are asymmetrical about the battery cell 1, and the second wall surface 302 and the fourth wall surface 22 are planar; in some embodiments, the second wall surface 302 and the fourth wall surface 22 are curved, wavy, or toothed surfaces, but the second wall surface 302 and the fourth wall surface 22 are asymmetrical about the battery cell 1, and the first wall surface 301 and the third wall surface 21 are planar.

[0086] Example 10:

[0087] like Figure 10 As shown, the non-uniform battery assembly of this embodiment includes a battery cell 1, two adhesive films 2, and two second protective plates 33. The battery cell 1 is a flat plate, and there are two adhesive films 2, which are respectively disposed on both sides of the battery cell 1 and symmetrically arranged. Each adhesive film 2 has a third wall surface 21 facing the battery cell 1 and a fourth wall surface 22 facing away from the battery cell 1. Both the third wall surface 21 and the fourth wall surface 22 are corrugated surfaces with the same shape. The two second protective plates 33 are both flat plates and are located on the outer sides of the two adhesive films 2. The second protective plates 33 are glass plates.

[0088] It should be noted that implementation ten can also include various extended modes. For example, in some embodiments, the third wall surface 21 and the fourth wall surface 22 are both arc surfaces; in some embodiments, the third wall surface 21 and the fourth wall surface 22 are both toothed surfaces; in some embodiments, the two adhesive films 2 are asymmetrically arranged with respect to the battery cell 1.

[0089] Example 11:

[0090] like Figure 11 As shown, the non-uniform battery assembly of this embodiment includes a battery cell 1, two adhesive films 2, and two second protective plates 33. The battery cell 1 is a flat plate, and there are two adhesive films 2, which are respectively disposed on both sides of the battery cell 1 and symmetrically arranged. Both adhesive films 2 are flat plates and are located on the outer side of the two adhesive films 2 and symmetrically arranged with respect to the battery cell 1. The second protective plates 33 are glass plates. The second protective plates 33 have a first wall surface 301 facing the adhesive films 2 and a second wall surface 302 facing away from the adhesive films 2. Both the first wall surface 301 and the second wall surface 302 are corrugated surfaces, and the corrugated surfaces have the same shape.

[0091] It should be noted that the eleventh embodiment can also include various extended modes, for example, in some embodiments, the first wall surface 301 and the second wall surface 302 are both circular arc surfaces; in some embodiments, the first wall surface 301 and the second wall surface 302 are both tooth-shaped surfaces, and in some embodiments, the two adhesive films 2 are asymmetrically arranged with respect to the battery piece 1.

[0092] It should be noted that in the above-described eleven embodiments, the two second protection plates 33 and the first protection plate 32 and the back plate 31 have the same effect, that is, in the first embodiment to the fourth embodiment, the first protection plate 32 and the back plate 31 can be replaced by the two second protection plates 33, and in the fifth embodiment to the eleventh embodiment, the two second protection plates 33 can be replaced by the first protection plate 32 and the back plate 31. In addition, in the first embodiment to the eleventh embodiment, the structure of the adhesive film 2 and the packaging plate described in each embodiment can be combined into another embodiment. The above-described embodiments only describe the technical solutions that can be included in the present application, and do not mean that the above-described embodiments are all the technical solutions included in the present application.

[0093] In the description of the present specification, the description of the terms "some embodiments", "other embodiments", and the like means that the specific features, structures, materials or characteristics described in connection with the embodiments or examples are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily mean the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0094] The above is only the preferred embodiment of the present application, and for those skilled in the art, according to the idea of the present application, the specific implementation manner and application range can be changed, and the content of the present specification should not be understood as a limitation of the present application.

Claims

1. A non-uniform battery assembly, characterized in that, include: Battery cell (1); Adhesive film (2), the adhesive film (2) is disposed on both sides of the battery cell (1); An encapsulation plate, the encapsulation plate being located outside the adhesive film (2); wherein: A second filler is provided between the adhesive film (2) and the encapsulation plate so that the plate structure formed by the encapsulation plate and the adhesive film (2) is a structure with uneven thickness, and / or; The plate structure formed by the battery cell (1), the encapsulant film (2) and the encapsulation plate has a non-uniform thickness. The adhesive film (2) has a third wall surface (21) facing the battery cell (1) and a fourth wall surface (22) facing away from the battery cell (1); wherein at least one of the third wall surface (21) and the fourth wall surface (22) is a second non-planar surface; the fourth wall surface (22) is an arc surface protruding towards the battery cell (1).

2. The non-uniform battery module according to claim 1, characterized in that, The encapsulation plate has a first wall surface (301) facing the adhesive film (2) and a second wall surface (302) facing away from the adhesive film (2); wherein at least one of the first wall surface (301) and the second wall surface (302) is a first non-planar surface.

3. The non-uniform battery assembly according to claim 2, characterized in that, The first wall surface (301) and the second wall surface (302) have the same shape and are both the first non-planar surface.

4. The non-uniform battery assembly according to claim 2, characterized in that, At least one of the first wall surface (301) and the second wall surface (302) is the first non-planar surface, and the first wall surface (301) and the second wall surface (302) have different shapes.

5. The non-uniform battery module according to claim 1, characterized in that, The third wall (21) and the fourth wall (22) have the same shape and are both the second non-planar surfaces.

6. The non-uniform battery module according to claim 1, characterized in that, At least one of the third wall surface (21) and the fourth wall surface (22) is the second non-planar surface, and the third wall surface (21) and the fourth wall surface (22) have different shapes.

7. The non-uniform battery assembly according to any one of claims 1-6, characterized in that, The encapsulation plate includes a back plate (32) and a first protective plate (31), wherein the back plate (32) is located below the battery cell (1) and the first protective plate (31) is located above the battery cell (1), or; The encapsulation board includes two second protective plates (33) made of the same material.

8. The non-uniform battery assembly according to any one of claims 1-6, characterized in that, The adhesive film (2) is symmetrically arranged with respect to the battery cell (1), and / or the encapsulation plate is symmetrically arranged with respect to the battery cell (1).

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