Battery pack and electric equipment

Abstract

The utility model relates to the technical field of batteries, and discloses a battery pack and electric equipment, the battery pack has a first direction, a second direction and a third direction which are intersected pairwise, and the battery pack comprises a box body, a plurality of battery monomers, a first plate body and an adhesive layer, the box body comprises a bottom plate and a frame, and the bottom plate and the frame jointly define a containing space; a first boundary beam is arranged at one end of the frame along the first direction; the plurality of battery monomers are arranged in the accommodating space along a first direction to form a battery cell column, and the battery monomer, which is the smallest from the first boundary beam, in the battery cell column has a target end surface along the first direction; a first gap is formed between the target end face and the first edge beam; the first plate body is an elastic piece and is arranged in the first gap; the first gap is filled with an adhesive layer; the target end face comprises a first area and a second area, the first area is connected with the first plate body, and the second area is connected with the adhesive layer. According to the battery pack provided by the utility model, the structural stability of the battery pack can be improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to battery technology field, concretely relates to a battery pack and electric equipment. BACKGROUND

[0002] The battery pack can provide stable, high energy density direct current power for electric vehicles, energy storage systems and portable electronic devices, and the design of the battery pack is crucial for efficient, safe and economic use of the battery.

[0003] In the prior art, to meet the structural stability requirements of the battery pack, glue is usually poured into the battery pack to fix the battery cells and various components inside the pack. However, the battery monomers will expand during operation. However, due to the high hardness of the glue layer after solidification, it is difficult to provide sufficient buffer space for the expansion of the battery monomers, affecting the working state and life of the battery monomers. At the same time, the pressure generated during expansion will cause extrusion to other structures in the box, which is not conducive to structural stability. SUMMARY

[0004] Therefore, the utility model provides a battery pack and electric equipment to solve the problems in the prior art.

[0005] In a first aspect, the utility model provides a battery pack with first, second and third directions intersecting with each other, comprising: a box, a plurality of battery monomers, a first plate and a glue layer.

[0006] The box includes a bottom plate and a frame. The bottom plate is arranged at one end of the frame along the third direction, and the bottom plate and the frame together form a containing space. The frame includes a first edge beam, which is located at one end of the frame along the first direction.

[0007] The plurality of battery monomers are arranged in the containing space along the first direction to form a cell column. The battery monomer with the smallest distance from the first edge beam in the cell column has a target end face. The target end face is the largest wall surface of the battery monomer and faces the first edge beam along the first direction.

[0008] The target end face and the first edge beam have a first gap. The first plate is an elastic member and is arranged in the first gap. The target end face includes a first area and a second area. The first plate is connected to the first area. The glue layer is located in the first gap, and one side of the glue layer is connected to the first edge beam, and the other side is connected to the first plate and the second area.

[0009] Beneficial effects: the battery pack provided by the utility model, the target end face of the battery monomer faces the first side beam, the target end face of the battery monomer and the first side beam have a first gap, the first plate body is an elastic member and is arranged in the first gap, the first gap is filled with a glue layer, the target end face comprises a first area and a second area, the first area is connected with the first plate body, and the second area is connected with the glue layer, wherein the target end face is the wall surface with the largest area in the battery monomer, on the one hand, a connecting structure of the side beam-glue layer-battery core is formed, a force transmission structure with relatively higher hardness can be provided, the stability of the battery core under stress is ensured, on the other hand, the first plate body is connected to the large surface of the battery monomer, the large surface is the area with the largest expansion deformation of the battery monomer in thermal runaway, the deformation of the edge of the large surface is relatively small, the elastic first plate body is arranged to absorb and buffer the expansion, and the structural stability of the battery pack is improved.

[0010] In an alternative embodiment, the second area is arranged on both sides of the first area along the second direction.

[0011] Alternatively, the second area is arranged on both sides of the first area along the third direction.

[0012] Beneficial effects: a connecting structure of the side beam-glue layer-battery core is formed, a force transmission structure with relatively higher hardness can be provided, the stability of the battery core under stress is ensured, the first plate body is connected to the first area of the battery monomer, the large surface is the area with the largest expansion deformation of the battery monomer in thermal runaway, the deformation of the edge of the large surface is relatively small, the elastic first plate body is arranged to absorb and buffer the expansion, and the structural stability of the battery pack is improved.

[0013] In an alternative embodiment, the second area surrounds the first area.

[0014] In the first direction, the projection of the first plate body on the first side beam is located in the projection of the first target end face on the first side beam.

[0015] Beneficial effects: on the one hand, a connecting structure of the side beam-glue layer-battery core is formed, a force transmission structure with relatively higher hardness can be provided, the stability of the battery core under stress is ensured, on the other hand, the elastic first plate body is arranged to absorb and buffer the expansion, and the structural stability of the battery pack is improved, and on the other hand, the first plate body can serve as a heat preservation member, so that the temperature attenuation of the large surface of the battery monomer is reduced, and the heat preservation performance of the battery pack is enhanced.

[0016] In an alternative embodiment, the area of the first area is greater than or equal to the area of the second area.

[0017] Beneficial effect: the target end face corresponding to the first area is the surface with the largest surface area of the battery monomer, and the deformation of the target end face is the largest when the battery monomer is in thermal runaway. The first area is bonded with the first plate body having elasticity, thereby providing a deformation space for the target end face, ensuring that the area of the first area is larger than the area of the second area, so that the deformation area can be maintained on a certain area, thereby providing sufficient deformation space for the battery monomer.

[0018] In an optional embodiment, the first plate body is spaced apart from the first edge beam in the first direction, and the first gap is located between the first plate body and the first edge beam.

[0019] Beneficial effect: thereby making the glue flow into the space between the first plate body and the first edge beam, facilitating the formation of a whole by the glue during the glue filling process, forming an edge beam-glue layer-cell whole connection structure, and providing a relatively higher hardness force transmission structure to ensure stable stress of the cell.

[0020] In an optional embodiment, the battery pack further comprises a second plate body, the second plate body is located between adjacent cell columns, and the plurality of second plate bodies and the plurality of cell columns are alternately arranged in the second direction.

[0021] The second plate body extends in the first direction and is at least partially located in the first gap and abuts against the first edge beam.

[0022] In the second direction, the first plate body is located between adjacent second plate bodies.

[0023] Beneficial effect: thereby forming an edge beam-glue layer-cell connection structure, which can provide a relatively higher hardness force transmission structure to ensure stable stress of the cell. At the same time, the elastic first plate body and the second plate body can absorb and buffer the expansion, which is conducive to improving the structural stability of the battery pack.

[0024] In an optional embodiment, the battery monomer further comprises a second side surface, the second side surface is located at one end of the battery monomer in the second direction, the second side surface comprises a third area and a fourth area, the fourth area is located on at least one side of the third area in the third direction, and the third area is used for connecting with the second plate body.

[0025] Beneficial effect: the elastic first plate body and the second plate body can better absorb and buffer the expansion, which is conducive to improving the structural stability of the battery pack.

[0026] In an optional embodiment, the fourth area is located on opposite sides of the third area in the third direction.

[0027] In the third direction, the height dimension of the second plate body is smaller than the height dimension of the second side surface.

[0028] Beneficial effects: thus, the bonding area of the second side and the adhesive layer is reserved, the connecting structure of the edge beam-adhesive layer-battery cell is formed, a relatively higher hardness force transmission structure can be provided, and the stability of the battery cell under stress can be ensured.

[0029] In an alternative embodiment, one end of the frame along the second direction has a second edge beam, and the second edge beam is connected with the first edge beam.

[0030] In the second direction, a second gap is formed between the battery cell column closest to the second edge beam and the first edge beam in the plurality of battery cell columns; the second gap is in communication with the first gap, and the second gap is adapted to be filled with the adhesive layer.

[0031] Beneficial effects: the adhesive can be continuously formed into a whole during the filling process, the whole connecting structure of the edge beam-adhesive layer-battery cell is formed, a relatively higher hardness force transmission structure can be provided, and the stability of the battery cell under stress can be ensured.

[0032] In an alternative embodiment, the battery pack further comprises a heat insulation assembly, which is arranged between two adjacent battery monomers along the first direction.

[0033] The heat insulation assembly comprises a heat insulation pad and a back-shaped frame, the back-shaped frame is arranged around the peripheral edge of the heat insulation pad, and the heat insulation pad is a nano material heat insulation pad.

[0034] Beneficial effects: the heat insulation pad can effectively reduce the heat transfer between adjacent battery monomers, prevent the overheating of a certain battery monomer from affecting other battery monomers, help maintain the uniform distribution of the internal temperature of the battery pack, avoid local overheating, and improve the overall thermal management efficiency of the battery pack; the back-shaped frame is made of an elastic material, and the back-shaped frame can cooperate with the heat insulation pad to absorb and disperse vibrations and impacts, reduce the influence of mechanical stress on the battery monomer, and protect the battery monomer from being damaged.

[0035] In a second aspect, the utility model also provides a kind of electric equipment, comprising the battery pack as described above.

[0036] Beneficial effects: the electric equipment of the second aspect can form the connecting structure of the edge beam-adhesive layer-battery cell on the one hand, a relatively higher hardness force transmission structure can be provided, and the stability of the battery cell under stress can be ensured, on the other hand, the first plate body is bonded to the large face of the battery monomer, the large face is the area where the battery monomer deforms most when thermal runaway occurs, and the deformation of the edge of the large face is relatively very little, and the elastic first plate body can be set to absorb and buffer expansion, which is conducive to improving the structural stability of the battery pack. BRIEF DESCRIPTION OF DRAWINGS

[0037] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the drawings required to be used in the description of the specific embodiments or the prior art will be briefly introduced as follows. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor on the basis of these drawings.

[0038] Figure 1 A top view of a battery pack of an embodiment of the present application;

[0039] Figure 2 A box body perspective view of a battery pack of an embodiment of the present application;

[0040] Figure 3 An exploded view of a battery monomer, a first plate body, a second plate body and a heat insulation assembly of a battery pack of an embodiment of the present application;

[0041] Figure 4 A first perspective view of a battery monomer of a battery pack of an embodiment of the present application;

[0042] Figure 5 A second perspective view of a battery monomer of a battery pack of an embodiment of the present application;

[0043] Figure 6 A front view of a battery monomer, a first plate body and a second plate body of a battery pack of an embodiment of the present application;

[0044] Figure 7 A Figure 1 A local enlarged view of A in FIG. 1;

[0045] Figure 8 A Figure 7 A structure view after filling glue in the first gap in FIG. 1;

[0046] Figure 9 A Figure 1 A sectional view of B-B section in FIG. 1;

[0047] Figure 10 A Figure 9 A local enlarged view of D in FIG. 1;

[0048] Figure 11 A Figure 10 A structure view after filling glue in the first gap in FIG. 1;

[0049] Figure 12 A Figure 1 A local enlarged view of C in FIG. 1;

[0050] Figure 13 A Figure 12 A structure view after filling glue in the second gap in FIG. 1;

[0051] Figure 14 for Figure 1 a sectional view along the E-E section line;

[0052] Figure 15 for Figure 14 a local enlarged schematic view at F;

[0053] Figure 16 is a perspective view of a heat insulation assembly of a battery pack according to an embodiment of the present application.

[0054] Explanation of Reference Signs:

[0055] 10, box body; 100, containing space; 101, first gap; 102, second gap; 11, bottom plate; 12, frame; 121, first edge beam; 122, second edge beam;

[0056] 20, battery monomer; 201, first side face; 202, second side face; 200, cell column; 21, target end face; 211, first area; 212, second area; 221, third area; 222, fourth area;

[0057] 31, first plate body; 32, second plate body; 33, heat insulation assembly; 331, heat insulation pad; 332, back-shaped frame;

[0058] 40, glue layer;

[0059] X, first direction; Y, second direction; Z, third direction. DETAILED DESCRIPTION

[0060] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme of the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0061] The embodiments of the present application will be described below in conjunction with Figures 1 to 16 .

[0062] According to the embodiments of the present application, on the one hand, a battery pack is provided, having a first direction X, a second direction Y and a third direction Z intersecting with each other in pairs, comprising: a box body 10, a plurality of battery monomers 20, a first plate body 31 and a glue layer 40.

[0063] Please refer to Figure 2As shown, the box body 10 includes a bottom plate 11 and a frame 12, the frame 12 is square, the bottom plate 11 is arranged at one end of the frame 12 along the third direction Z, and the bottom plate 11 and the frame 12 jointly enclose a containing space 100; the frame 12 includes a first side beam 121, the first side beam 121 is located at one end of the frame 12 along the first direction X;

[0064] Please combine Figure 1 And Figure 3 As shown, a plurality of battery monomers 20 are arranged in the containing space 100 to form a cell column 200 along the first direction X, and a plurality of cell columns 200 are arranged along the second direction Y; combined Figure 3 And Figure 5 As shown, and along the first direction X, the battery monomer 20 in the cell column 200 closest to the first side beam 121 has a target end face 21, wherein the target end face 21 is the wall face with the largest area among all wall faces of the battery monomer 20, and the target end face 21 faces the first side beam 121 along the first direction X.

[0065] In an embodiment, referring to Figure 4 The battery monomer 20 is a square shell cell, having two first side faces 201 opposite along the first direction X, two second side faces 202 opposite along the second direction Y, and two third side faces opposite along the third direction Z, wherein the first side face 201 has the largest area among the three, and the target end face 21 can be formed by one of the first side faces 201.

[0066] Please combine Figure 7 And Figure 8 As shown, the target end face 21 and the first side beam 121 have a first gap 101; the first plate body 31 is an elastic member and is arranged in the first gap 101; the first gap 101 is filled with a glue layer 40; the area of the first plate body 31 is smaller than that of the large face of the battery monomer 20, still referring to Figure 5 As shown, the target end face 21 includes a first area 211 and a second area 212, the first area 211 is connected with the first plate body 31, and the second area 212 is connected with the glue layer 40.

[0067] The glue layer 40 is formed by solidification of glue. The solidified glue layer 40 is located in the first gap 101, and one side is connected with the first side beam 121, and the other side is connected with the first plate body 31 and the second area 212.

[0068] In an embodiment, the first area 211 can be directly bonded with the first plate body 31, and the second area 212 is bonded with the glue layer 40.

[0069] The battery pack provided by the utility model, the target end face 21 of the battery monomer 20 faces the first edge beam 121, the target end face 21 of the battery monomer 20 and the first edge beam 121 have the first gap 101, the first plate body 31 is an elastic member and is arranged in the first gap 101, the first gap 101 is filled with the adhesive layer 40, the target end face 21 comprises the first area 211 and the second area 212, the first area 211 is bonded with the first plate body 31, and the second area 212 is bonded with the adhesive layer 40, wherein the target end face 21 is the large face of the battery monomer 20, on the one hand, the connecting structure of the edge beam-adhesive layer 40-battery cell is formed, a force transmission structure with higher relative hardness can be provided, the stability of the battery cell under stress is ensured, on the other hand, the first plate body 31 is bonded to the large face of the battery monomer 20, the large face is the area with the most expansion deformation of the battery monomer 20 in thermal runaway, the deformation of the edge of the large face is relatively very small, the elastic first plate body 31 is arranged to absorb and buffer the expansion, and the structural stability of the battery pack is improved.

[0070] Further, the first plate body 31 can be made of a heat preservation material, and the heat preservation effect of the battery pack is improved.

[0071] In some embodiments, referring to FIG. 1, Figure 5 The second area 212 is arranged on both sides of the first area 211 along the second direction Y;

[0072] Alternatively, the second area 212 is arranged on both sides of the first area 211 along the third direction Z.

[0073] In the embodiment, the first area 211 is used for bonding with the first plate body 31, and the second area 212 is used for bonding with the adhesive layer 40, so as to form the connecting structure of the edge beam-adhesive layer 40-battery cell, a force transmission structure with higher relative hardness can be provided, the stability of the battery cell under stress is ensured, the first plate body 31 is bonded to the first area 211 of the battery monomer 20, the large face is the area with the most expansion deformation of the battery monomer 20 in thermal runaway, the deformation of the edge of the large face is relatively very small, the elastic first plate body 31 is arranged to absorb and buffer the expansion, and the structural stability of the battery pack is improved.

[0074] In some embodiments, referring to FIG. 1, Figure 5 The second area 212 is arranged around the first area 211;

[0075] Please refer to FIG. 1, Figure 6As shown, along the first direction X, the projection of the first plate body 31 on the first edge beam 121 is located within the projection of the target end face 21 on the first edge beam 121, the first region 211 is used for bonding with the first plate body 31, and the second region 212 is used for bonding with the glue layer 40, thereby forming an edge beam-glue layer 40-battery cell connection structure, which can provide a relatively higher hardness force transmission structure to ensure stable stress of the battery cell, on the one hand, and the elastic first plate body 31 can absorb and buffer expansion, which is conducive to improving the structural stability of the battery pack, on the other hand, the first plate body 31 can serve as a heat preservation member, thereby reducing the temperature attenuation of the large surface of the battery monomer 20 and enhancing the heat preservation performance of the battery pack.

[0076] In some embodiments, the area of the first region 211 is greater than or equal to the area of the second region 212. The target end face 21 corresponding to the first region 211 is the surface with the largest surface area of the battery monomer 20, and the deformation at the target end face 21 is the largest when the battery monomer 20 is in thermal runaway, and the first region 211 is bonded with the elastic first plate body 31, thereby providing a deformation space for the target end face 21, and the area of the first region 211 being greater than the area of the second region 212 can enable the deformation region to remain within a certain area, thereby providing sufficient deformation space for the battery monomer 20.

[0077] In some embodiments, as shown in Figure 7 and Figure 10 As shown, along the first direction X, the first plate body 31 is arranged in a spaced manner with the first edge beam 121, and the first gap 101 is located between the first plate body 31 and the first edge beam 121.

[0078] In this embodiment, the first gap 101 is located between the first plate body 31 and the first edge beam 121, so that the glue flows into the first gap 101 between the first plate body 31 and the first edge beam 121, which facilitates the formation of a whole during the glue filling process, and forms an overall connection structure of the edge beam-glue layer 40-battery cell, which can provide a relatively higher hardness force transmission structure to ensure stable stress of the battery cell.

[0079] In some embodiments, as shown in Figure 3 The battery pack further comprises a second plate body 32, the second plate body 32 is an elastic member and is located between adjacent battery cell columns 200, and a plurality of second plate bodies 32 and a plurality of battery cell columns 200 are arranged alternately along a second direction Y.

[0080] As shown in Figure 7 The second plate body 32 extends along the first direction X and is at least partially located in the first gap 101 and abuts against the first edge beam 121.

[0081] Along the second direction Y, the first plate body 31 is located between adjacent second plate bodies 32.

[0082] In the embodiment, the first plate body 31 is an elastic member and is arranged in the first gap 101, the first plate body 31 is bonded to the target end face 21 of the battery monomer 20, the first gap 101 is filled with the adhesive layer 40, and the adhesive layer 40 bonds the first side beam 121 to the battery monomer 20; the second plate body 32 is an elastic member and is located between adjacent cell columns 200, the second plate body 32 extends along the first direction X and is at least partially located in the first gap 101 and abuts against the first side beam 121, thereby forming a connection structure of the side beam-adhesive layer 40-cell, which can provide a force transmission structure with relatively higher rigidity and ensure stable stress of the cell. Meanwhile, the elastic first plate body 31 and the second plate body 32 can absorb and buffer expansion, which is conducive to improving the structural stability of the battery pack.

[0083] In some embodiments, the battery monomer 20 further includes a second side face 202 located at one end of the battery monomer 20 along the second direction Y, the second side face 202 includes a third region 221 and a fourth region 222, the fourth region 222 is located at least one side of the third region 221 along the third direction Z, and the third region 221 is used to bond to the second plate body 32.

[0084] In the embodiment, the first plate body 31 is an elastic member and is arranged in the first gap 101, the first plate body 31 is bonded to the first region 211 of the battery monomer 20, the first gap 101 is filled with the adhesive layer 40, and the adhesive layer 40 is bonded to the second region 212 of the battery monomer 20; the second plate body 32 is an elastic member and is located between adjacent cell columns 200, the second plate body 32 extends along the first direction X and is at least partially located in the first gap 101 and abuts against the first side beam 121, the second plate body 32 is bonded to the third region 221 of the battery monomer 20, and the elastic first plate body 31 and the second plate body 32 can better absorb and buffer expansion, which is conducive to improving the structural stability of the battery pack.

[0085] In some embodiments, as shown in Figure 5 The fourth region 222 is located at opposite sides of the third region 221 along the third direction Z;

[0086] Along the third direction Z, the height dimension of the second plate body 32 is less than the height dimension of the second side face 202, thereby reserving the bonding area of the second side face 202 and the adhesive layer 40, forming a connection structure of the side beam-adhesive layer 40-cell, which can provide a force transmission structure with relatively higher rigidity and ensure stable stress of the cell.

[0087] In some embodiments, as shown in Figure 2 The frame 12 has a second side beam 122 at one end along the second direction Y, and the second side beam 122 is connected to the first side beam 121;

[0088] As shown in Figure 12 and Figure 13As shown, along the second direction Y, the second gap 102 is formed between the cell column 200 closest to the second side beam 122 and the first side beam 121 in the plurality of cell columns 200; the second gap 102 is communicated with the first gap 101, and the second gap 102 is suitable for filling the adhesive layer 40, facilitating the adhesive to form a whole during the filling process, forming a whole connection structure of the side beam-adhesive layer 40-cell, and can provide a force transmission structure with relatively higher hardness, thereby ensuring the stability of the cell under stress.

[0089] In some embodiments, referring to Figure 3 As shown, the battery pack further comprises a heat insulation assembly 33 arranged between two adjacent battery monomers 20 along the first direction X.

[0090] Referring to Figure 16 As shown, the heat insulation assembly 33 comprises a heat insulation pad 331 and a back-shaped frame 332, the back-shaped frame 332 is arranged around the circumferential edge of the heat insulation pad 331, and the heat insulation pad 331 is a nano material heat insulation pad 331.

[0091] Since the heat generation of the cell is the most in the middle position of the large surface, in the embodiment, the heat insulation assembly 33 is arranged between two adjacent battery monomers 20 along the first direction X, the heat insulation assembly 33 comprises a heat insulation pad 331 and a back-shaped frame 332, the heat insulation pad 331 can effectively reduce the heat transfer between adjacent battery monomers 20, prevent the overheating of a certain battery monomer 20 from affecting other battery monomers 20, help to maintain the uniform distribution of the internal temperature of the battery pack, avoid local overheating, and improve the overall thermal management efficiency of the battery pack; the back-shaped frame 332 is made of elastic material, and the back-shaped frame 332 can cooperate with the heat insulation pad 331 to absorb and disperse vibration and impact, reduce the influence of mechanical stress on the battery monomer 20, and protect the battery monomer 20 from being damaged.

[0092] According to the embodiments of the utility model, on the other hand, a kind of electric equipment is also provided, comprising: equipment body, and the battery pack as described above.

[0093] The electric equipment in the embodiment can form the connection structure of the side beam-adhesive layer 40-cell, provide a force transmission structure with relatively higher hardness, ensure the stability of the cell under stress, and on the other hand, the first plate body 31 is bonded to the large surface of the battery monomer 20, the large surface is the region where the battery monomer 20 expands and deforms most when thermal runaway occurs, and the deformation of the edge of the large surface is very small, so the elastic first plate body 31 can be arranged to absorb and buffer expansion, which is conducive to improving the structural stability of the battery pack.

[0094] Although the embodiments of the utility model are described in combination with the drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the utility model, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. A battery pack having a first direction (X), a second direction (Y), and a third direction (Z) that intersect two by two, characterized by, The battery pack comprises a box body (10), a plurality of battery monomers (20), a first plate body (31) and a glue layer (40). The box body (10) comprises a bottom plate (11) and a frame (12), the bottom plate (11) is arranged on one end of the frame (12) along the third direction (Z), and the bottom plate (11) and the frame (12) jointly form a containing space (100); the frame (12) comprises a first edge beam (121), and the first edge beam (121) is located at one end of the frame (12) along the first direction (X). A plurality of battery monomers (20) are arranged in the containing space (100) to form a battery cell column (200) along the first direction (X), and the battery monomer (20) in the battery cell column (200) closest to the first edge beam (121) has a target end face (21), the target end face (21) is the largest wall face of the battery monomer (20) and faces the first edge beam (121) along the first direction (X). The target end face (21) and the first edge beam (121) have a first gap (101), the first plate body (31) is an elastic member and is arranged in the first gap (101), the target end face (21) comprises a first area (211) and a second area (212), the first plate body (31) is connected to the first area (211), and the glue layer (40) is arranged in the first gap (101) and connected to the first edge beam (121) at one end and connected to the first plate body (31) and the second area (212) at the other end. The second area (212) is arranged on both sides of the first area (211) along the second direction (Y).

2. The battery pack of claim 1, wherein, Or, the second area (212) is arranged on both sides of the first area (211) along the third direction (Z). The second area (212) surrounds the first area (211).

3. The battery pack of claim 2, wherein, Along the first direction (X), the projection of the first plate body (31) on the first edge beam (121) is located in the projection of the target end face (21) on the first edge beam (121). The area of the first area (211) is greater than or equal to the area of the second area (212).

4. The battery pack of claim 2 or 3, wherein, Along the first direction (X), the first plate body (31) is arranged apart from the first edge beam (121).

5. The battery pack of claim 3, wherein, The battery pack further comprises a second plate body (32), the second plate body (32) is arranged between adjacent battery cell columns (200), and a plurality of second plate bodies (32) and a plurality of battery cell columns (200) are arranged alternately along the second direction (Y).

6. The battery pack of claim 5, wherein, The second plate body (32) extends along the first direction (X) and is at least partially arranged in the first gap (101) and abuts against the first edge beam (121). Along the second direction (Y), the first plate body (31) is arranged between adjacent second plate bodies (32). ​ 7. The battery pack of claim 6, wherein, The battery cell (20) further comprises a second side surface (202); the second side surface (202) is located at one end of the battery cell (20) along the second direction (Y), and the second side surface (202) comprises a third region (221) and a fourth region (222); the fourth region (222) is located at least one side of the third region (221) along the third direction (Z), and the third region (221) is used for connecting with the second plate body (32).

8. The battery pack of claim 7, wherein, The fourth region (222) is located at opposite sides of the third region (221) along the third direction (Z). Along the third direction (Z), the height dimension of the second plate body (32) is smaller than the height dimension of the second side surface (202).

9. The battery pack of any one of claims 1-3 or 5-8, wherein, The battery pack further comprises a heat insulation assembly (33) arranged between two adjacent battery cells (20) along the first direction (X). The heat insulation assembly (33) comprises a heat insulation pad (331) and a back-shaped frame (332) arranged around the peripheral edge of the heat insulation pad (331).

10. An electric device, characterized by The battery pack comprises any one of the battery packs according to claims 1-9.

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