Battery pack and electric equipment comprising same

Abstract

The utility model relates to the technical field of batteries, and particularly provides a battery pack and electric equipment comprising the same. The battery pack comprises a box body and a battery cell group, the box body comprises a cover body and a frame, a cavity is defined by the cover body and the frame, and the battery cell group is located in the cavity; a first gap and a second gap are formed between the frame and the battery cell group, the first gap and the second gap are filled with glue, and a glue stopping block is arranged at the joint of the first gap and the second gap. According to the invention, the first gap and the second gap are filled with glue, so that the effects of connection reinforcement and damping and buffering are achieved; the joint of the first gap and the second gap is provided with the glue blocking block used for blocking mutual circulation of glue in the first gap and the second gap, so that the large-range irregular glue filling space is divided into small and relatively regular glue filling spaces, namely glue filling is performed in each small space, the glue can flow and be distributed in the small spaces, and the glue filling efficiency is improved. The filling effect of the glue in the space is effectively improved, and defects are reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of batteries, and specifically provides a battery pack and an electric device comprising the same. BACKGROUND

[0002] With the popularization of new energy vehicles, the market has increasingly high requirements for battery performance, especially in terms of safety and service life. As a key component for protecting battery cells and providing connection between the battery cells and the outside, the design of the battery pack directly affects the performance of the vehicle.

[0003] In the related art, there is a gap space in the battery pack, and the mutual connection and fixation between the internal components of the battery pack can be achieved by filling glue into the gap space, thereby enhancing the overall modal of the battery pack. However, there are many irregular gaps between the internal components and parts of the battery pack. Due to the limited flowability of the glue, it is difficult to effectively and uniformly distribute the glue in the space, especially when filling and pouring a large amount of glue, it is more difficult to control the filling effect of the glue, and the glue may not be evenly filled, or even there may be glue leakage or lack of glue. CONTENT OF THE UTILITY MODEL

[0004] The purpose of the present application is to solve at least part of the technical problems mentioned in the above content, and the purpose is achieved by the following technical solutions:

[0005] In a first aspect, the present application provides a battery pack having a first direction, a second direction and a third direction intersecting with each other, comprising a box body and a battery cell group, the box body comprising a cover body and a frame, the cover body being connected to the end of the frame along the third direction, the cover body and the frame enclosing a cavity, and the battery cell group being located in the cavity; the frame and the battery cell group have a first gap and a second gap, the first gap is located on at least one side of the battery cell group along the first direction, and the first gap extends along the second direction, the second gap is located on at least one side of the battery cell group along the second direction, and the second gap extends along the first direction, and the first gap and the second gap are filled with a glue layer, a glue blocking block is arranged between the first gap and the second gap, the glue blocking block is used to separate the first gap and the second gap, the side wall of the glue blocking block is connected to the battery cell group and the frame respectively, and one end of the glue blocking block along the third direction is connected to the cover body.

[0006] In some embodiments, along the third direction, the height of the glue blocking block is greater than or equal to the height of the battery cell group.

[0007] In some embodiments, the glue blocking block is in a square structure; or the glue blocking block is in an L-shaped structure and includes a first portion and a second portion connected to each other and arranged at an angle, the first portion is located at one side of the first gap along the second direction, and the second portion is located at one side of the second gap along the first direction; the two side walls opposite to each other along the first direction of the first portion are connected to the battery cell group and the frame respectively, the two side walls opposite to each other along the second direction of the second portion are connected to the battery cell group and the frame respectively, and the first portion and the second portion are connected to the cover body at the same end along the third direction.

[0008] In some embodiments, the battery cell group includes a plurality of battery cell columns and a plurality of side plates, the side plates abut against the battery cell columns, and the plurality of battery cell columns and the plurality of side plates are arranged alternately along the first direction; the frame includes a first side beam, the first side beam is located at one end of the frame along the second direction, the second gap is arranged between the first side beam and the battery cell columns, at least one end of the side plate protrudes towards the first side beam relative to the battery cell columns along the second direction to form a protruding portion, and the protruding portion is located in the second gap.

[0009] In some embodiments, the second gap is provided with a glue injection channel between the first side beam and the protruding portion, the glue injection channel is configured to allow the glue to pass from one side of the side plate to the other side along the first direction.

[0010] In some embodiments, the battery cell column includes a plurality of battery cells and a plurality of end plates arranged alternately along the second direction, and the two ends of the end plate along the first direction are both spaced apart from the adjacent side plate.

[0011] In some embodiments, the protruding portion abuts against the first side beam, one end of the protruding portion towards the first side beam is recessed away from the first side beam to form a recessed groove, the recessed groove forms the glue injection channel along the first direction through the protruding portion.

[0012] In some embodiments, the protruding portion abuts against the first side beam, and the protruding portion is provided with a through hole extending along the first direction, the through hole forms the glue injection channel.

[0013] In some embodiments, the height of the protruding portion along the third direction is less than that of the battery cell group.

[0014] In a second aspect, the application provides a power consuming device including the battery pack of the first aspect.

[0015] The technical scheme provided by the application has at least the following technical effects:

[0016] In the present application, the first gap and the second gap with corner communication between the frame and the battery cell group are filled with glue, which plays the role of reinforcing connection and shock absorption; the connecting part of the first gap and the second gap is provided with a glue blocking block for blocking the mutual flow of glue in the first gap and the second gap, so as to separate the large-scale and irregular glue filling space into a plurality of small and relatively regular glue filling spaces, i.e. glue filling is carried out in each small space respectively, and the glue can flow and distribute in the small space, effectively improving the filling effect of the glue in the space and reducing defects. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to better combine the content shown in the drawings of the specification with the content described in the specific embodiments, the drawings of the specification are briefly introduced as follows. It can be understood that the drawings of the specification mentioned below only schematically show the related technical solutions and some embodiments of the technical solutions of the present application, and under the premise of not paying creative labor, the person skilled in the art can also make drawings showing other embodiments.

[0018] Specifically, the annotations of the drawings of the specification are as follows:

[0019] Figure 1 The overall structure schematic diagram of the battery pack described in some embodiments of the present application;

[0020] Figure 2 The overall structure schematic diagram of the battery cell group described in some embodiments of the present application;

[0021] Figure 3 The partial cross-sectional schematic diagram of the box described in some embodiments of the present application;

[0022] Figure 4 The partial structure schematic diagram of the battery cell column described in some embodiments of the present application;

[0023] Figure 5 The structure schematic diagram of the frame described in some embodiments of the present application.

[0024] Specifically, the annotations of the drawings of the specification are as follows:

[0025] 100, battery pack; 110, box; 120, battery cell group; 121, battery cell column; 1211, battery cell; 111, frame; 1111, first side beam; 1112, assembly part; 1113, positioning part; 112, first cover; 113, second cover; 114, support plate; 1212, side plate; 1213, end plate; X, first direction; Y, second direction; Z, third direction; K, glue blocking block; J1, first gap; J2, second gap; B, protruding part; D, glue injection channel; C, missing groove; G, through hole; H, first opening. DETAILED DESCRIPTION

[0026] In order to make the content of the embodiments of the present application clearer, the following will be described with reference to the accompanying drawings. It is to be understood that the following mentioned content is only part of the embodiments of the present application, and all the embodiments enumerated in detail. Therefore, other embodiments obtained based on the following embodiments are also within the scope of protection of the present application without creative labor.

[0027] It should be understood that the terms used herein are for the purpose of describing particular embodiments only and are not intended to limit the technical solutions. For example, the terms "one", "a" and "said" used herein to modify a feature do not exclude that there can be more than one of the feature in other embodiments.

[0028] It should be understood that the terms "comprise", "include" and "have" are open terms, which indicate the presence of the stated features but do not exclude the presence of other features. Similarly, the terms "first", "second" and the like used herein to describe a variety of features do not imply that the features are limited to the order or sequence in which they are described.

[0029] It should be understood that, unless the context clearly indicates otherwise, the terms "set", "connected", "mounted" should be interpreted broadly, for example, can be fixedly connected, can be detachably connected, or integrally connected; can be directly connected, or indirectly connected through a medium. For those skilled in the art, the specific meaning of the above terms in the text can be understood according to the specific circumstances.

[0030] In addition, for the convenience of description, spatial relative terms will be used herein to describe the position of one feature relative to another feature, for example, "inner", "outer", "end", "side", "upper", "middle", "lower", "high", "low", "axial", "circumferential", "radial", "horizontal", "vertical", "first direction", "second direction", etc. It can be understood that the spatial relative relationship between two features should include other specific circumstances other than those shown in the accompanying drawings.

[0031] The embodiments of the present application will be described below with reference to the accompanying drawings.

[0032] In the first aspect, with reference to Figures 1 to 5 , with particular reference to Figure 4The battery pack 100 provided in the present application has a first direction X, a second direction Y and a third direction Z intersecting with each other, and optionally, the first direction X, the second direction Y and the third direction Z are perpendicular to each other. Specifically, the battery pack 100 comprises a box body 110 and a cell group 120. The box body 110 comprises a cover body and a frame 111. The cover body is connected to the end of the frame 111 along the third direction Z. The cover body and the frame 111 enclose a cavity. The cell group 120 is located in the cavity. The frame 111 and the cell group 120 have a first gap J1 and a second gap J2. The first gap J1 is located on at least one side of the cell group 120 along the first direction X and extends along the second direction Y. The second gap J2 is located on at least one side of the cell group 120 along the second direction Y and extends along the first direction X. The first gap J1 and the second gap J2 are perpendicular to each other. The first gap J1 and the second gap J2 are filled with a glue layer. A glue blocking block K is arranged between the first gap J1 and the second gap J2. The glue blocking block K is used to separate the first gap J1 and the second gap J2. The glue blocking block K is connected to the cell group 120 and the frame 111 respectively. One end of the glue blocking block K along the third direction Z is connected to the cover body.

[0033] In the present application, the frame 111 and the cell group 120 have the first gap J1 and the second gap J2 which are communicated at the corners. The first gap J1 and the second gap J2 are filled with glue which forms a glue layer after solidification. The glue layer can play the role of reinforcing connection and shock absorption. The first gap J1 and the second gap J2 are provided with the glue blocking block K at the intersection of the extension directions of the first gap J1 and the second gap J2. The glue blocking block K is used to separate the first gap J1 and the second gap J2 to block the mutual flow of the glue in the first gap J1 and the second gap J2 before solidification. Thus, the large and irregular glue filling space is separated into small and relatively regular glue filling spaces, i.e., glue filling is performed in each small space. The glue can flow and distribute in the small space, which effectively improves the filling effect of the glue in the space and reduces defects.

[0034] In some embodiments, referring to Figure 4 The glue blocking block K abuts against the cell group 120 and the frame 111 respectively, and the height of the glue blocking block K along the third direction Z is greater than or equal to the height of the cell group 120. Optionally, the glue blocking block K has a square structure. Alternatively, the glue blocking block K has an L-shaped structure and comprises a first part and a second part which are connected to each other and arranged at an angle. The first part is located on one side of the first gap J1 along the second direction Y. The second part is located on one side of the second gap J2 along the first direction X. The two opposite side walls of the first part along the first direction X are connected to the cell group 120 and the frame 111 respectively. The two opposite side walls of the second part along the second direction Y are connected to the cell group 120 and the frame 111 respectively. The same end of the first part and the second part along the third direction Z is connected to the cover body.

[0035] It can be understood that when the glue blocking block K is a square structure, it can be located at the corner between the first gap J1 and the second gap J2, or completely located in the first gap J1 and at one end close to the second gap J2, or the glue blocking block K can also be completely located in the second gap J2 and at one end close to the first gap J1, for example Figure 4 The above schemes all belong to the protection scope of the present application.

[0036] In some embodiments, referring to Figure 2 , the battery cell group 120 includes a plurality of battery cell columns 121 and a plurality of side plates 1212, the side plates 1212 abut against the battery cell columns 121, and the plurality of battery cell columns 121 and the plurality of side plates 1212 are alternately arranged along the first direction X; the frame 111 includes a first side beam 1111, the first side beam 1111 is located at one end of the frame 111 along the second direction Y, the second gap J2 is arranged between the first side beam 1111 and the battery cell column 121, at least one end of the side plate 1212 protrudes relative to the battery cell column 121 along the second direction Y to form a protruding part B, and the protruding part is located in the second gap J2.

[0037] In some embodiments, the second gap J2 corresponds to an injection channel D arranged between the first side beam 1111 and the protruding part B, the injection channel D is configured to allow the glue to pass from one side to the other side of the side plate 1212 along the first direction X. Optionally, the first side beam 1111 and the protruding part B corresponding to the second gap J2 are spaced apart along the second direction Y and the distance a satisfies 1mm≤a≤20mm.

[0038] Optionally, the protruding part B abuts against the first side beam 1111 corresponding to the second gap J2, one end of the protruding part B towards the first side beam 1111 is recessed away from the first side beam 1111 to form a notch C, which can be referred to as a first notch, the first notch penetrates through the protruding part B along the first direction X, and the first notch forms the injection channel D; optionally, the first notch is an arc-shaped slot.

[0039] In particular, the first notch can also be a rectangular slot, a triangular slot, etc., and the shape of the first notch is not limited here as long as it can satisfy the glue flow, wherein the arc-shaped slot has less hindrance to the glue flow; in addition, the first notch can be located at any end of the side plate 1212 along the third direction Z, or can be located at the middle of the side plate 1212 along the third direction Z, or the first notch has a plurality of and is spaced apart along the third direction Z; the above schemes all belong to the protection scope of the present application.

[0040] Optionally, the first side beam 1111 corresponding to the second gap J2 abuts against the protrusion B, the protrusion B is provided with a through hole G extending along the first direction X, and the through hole G forms the glue injection channel D. Optionally, the height of the protrusion B along the third direction Z is less than that of the battery cell group 120; along the third direction Z, the height of the side plate 1212 is lower than that of the first side beam 1111. It can be understood that the lower height of the side plate 1212 is conducive to the glue flowing from above the side plate 1212, thereby forming the glue injection channel D.

[0041] It should be noted that according to the above embodiment, the side plate 1212 can be arranged to be spaced apart from the first side beam 1111 or directly abut against the first side beam 1111, but when the side plate 1212 directly abuts against the first side beam 1111, the glue injection channel D needs to be arranged on the side plate 1212 to facilitate the glue to flow in the second gap J2, so as to avoid the second gap J2 being divided into multiple regions that are not connected to each other by the plurality of side plates 1212, thereby causing additional cumbersome task amount for the glue injection operation.

[0042] In addition, when the side plate 1212 is arranged to be spaced apart from the first side beam 1111, the distance a between the side plate 1212 and the first side beam 1111 cannot be too large, otherwise it is difficult to play a role in protecting the battery cell 1211, and the distance a between the side plate 1212 and the first side beam 1111 cannot be too small, otherwise it will block the flow of the glue, so the value of a should be moderate, for example, a can be any one of 1 mm, 2 mm, 3 mm, 4 mm, 5 mm, 6 mm, 7 mm, 8 mm, 9 mm, 10 mm, 11 mm, 12 mm, 13 mm, 14 mm, 15 mm, 16 mm, 17 mm, 18 mm, 19 mm, 20 mm or a range between any two of them.

[0043] In some embodiments, the side plate 1212 has a dimension h1 along the third direction Z, and the first side surface of the battery cell 1211 has a dimension h2 along the third direction Z, and h1≤h2 is satisfied. It can be understood that the above embodiment can avoid the glue between the side plate 1212 and the battery cell 1211 from overflowing from both sides of the battery cell 1211 along the third direction Z.

[0044] In some embodiments, with reference to Figure 3The edge of the side plate 1212 is further provided with a second slot, one end of the first side beam 1111 along the third direction Z protrudes towards the cavity and forms a positioning portion 1113, the positioning portion 1113 is used for fixing the second cover 113, and the second slot is matched with the positioning portion 1113. In some embodiments, the cell column 121 includes a plurality of cells 1211, the cell 1211 has two second sides opposite along the second direction Y and two first sides opposite along the first direction X, and the area of the second side is greater than the area of the first side. Optionally, the cell column 121 further includes an end plate 1213, the end plate 1213 is attached to the second side of the cell 1211 and located between the adjacent two side plates 1212, and the end plate 1213 has a gap between the two ends along the first direction X and the corresponding side plate 1212. Optionally, the end plate 1213 is a nano thermal insulation pad.

[0045] It should be noted that the end plate 1213 can play a role in isolating heat to avoid affecting other adjacent cells 1211 after a single cell 1211 fails, causing a chain reaction; and the end plate 1213 can also play a role in buffering and shock absorption of the battery pack 100 after being impacted. The gap between the two ends of the end plate 1213 and the side plate 1212 facilitates assembly and avoids mutual influence. In addition, the side plate 1212 abuts against the positioning portion 1113 of the first side beam 1111 through the second slot, thereby strengthening the overall structural strength.

[0046] Optionally, referring to Figure 3 The assembly portion 1112 and the positioning portion 1113 form a weight-reducing cavity, the support plate 114 is assembled to the assembly portion 1112 through a locking accessory, and part of the structure of the locking accessory is accommodated in the weight-reducing cavity. It should be noted that the weight-reducing cavity not only plays a role in reducing weight, but also can accommodate the locking accessory, increasing the space utilization rate; the locking accessory is used to enhance the firmness of the structure connection, and also can improve the sealing effect.

[0047] In summary, the glue blocking block K separates the first gap J1 and the second gap J2, which facilitates individual control of the glue filling amount of each gap, avoids the situation that some areas are not filled with glue due to insufficient flowability of the glue, and affects the firmness of the battery pack 100. In addition, along the second direction Y, the side plate 1212 protrudes from the cell column 121 or directly abuts against the first side beam 1111, when the battery pack 100 is laterally impacted, the side plate 1212 touches the first side beam 1111 before the cell 1211 and transmits force, which protects the cell 1211; and the protruding portion B on the side plate 1212 is provided with a glue injection channel D, which does not affect the glue injection operation.

[0048] More specifically, in some embodiments, the box 110 includes a frame 111, a first cover 112, a second cover 113, and a support plate 114. The frame 111 has a first opening H and a second opening on two sides along the third direction Z, respectively, the first cover 112 is connected to the frame 111 and covers the first opening H, the second cover 113 is connected to the frame 111 and covers the second opening, the first cover 112, the second cover 113 and the frame 111 enclose a cavity, and the cell group 120 is arranged in the cavity.

[0049] Optionally, the frame 111 includes four side beams connected end to end to form a square frame. In some embodiments, the cell group 120 is arranged in a square structure matching the frame 111, fully utilizes the volume in the cavity, and increases the volume energy density of the battery pack 100.

[0050] In some embodiments, referring to FIG. 5, the four side beams include two opposite first side beams 1111 and two opposite second side beams, and the length of the first side beam 1111 is greater than the length of the second side beam; correspondingly, the cell group 120 can include a plurality of cell columns 121 arranged along the first direction X, each column of cell columns 121 includes a plurality of cells 1211 arranged side by side along the second direction Y, and the cell 1211 has adjacent first and second surfaces, wherein the area of the first surface is greater than the area of the second surface; in particular, the first surfaces of all the cells 1211 face the first side beams 1111 of the frame 111, and the second surfaces of all the cells 1211 face the second side beams of the frame 111, that is, the narrow side of the frame 111 is arranged opposite to the narrow surface of the cell 1211, which is reasonable in design and avoids space waste as much as possible.

[0051] In some embodiments, referring to Figure 3 , the support plate 114 is a liquid cooling plate; the frame 111 further includes a mounting portion 1112, the mounting portion 1112 is arranged on the inner side wall of the frame 111 facing the cavity, and the mounting portion 1112 protrudes inward relative to the inner side wall; in the third direction Z of the frame 111, the mounting portion 1112 encloses a third opening, the axes of the first opening H, the second opening and the third opening are parallel to each other, and the area of the third opening is smaller than the area of the first opening H or the second opening; the support plate 114 is connected to the mounting portion 1112 and covers the third opening, and the support plate 114 is located between the first cover 112 and the second cover 113 and divides the cavity into a first sub-cavity and a second sub-cavity stacked vertically; the cell group 120 is arranged in one of the first sub-cavity and the second sub-cavity, and the support plate 114 abuts against the cell group 120.

[0052] Understandably, in some embodiments, the support plate 114 may only serve to support the battery cell 1211 in the third direction Z, without providing cooling or heat dissipation. In contrast, the support plate 114 is a liquid-cooled plate, which may have internal channels for fluid medium flow to absorb and transfer the heat emitted by the battery cell 1211, keeping the temperature of the battery pack 100 within a reasonable range. This integrates the support and heat dissipation structures, further improving the space utilization within the battery pack 100. It should be noted that both of the above embodiments fall within the protection scope of this application.

[0053] In some embodiments, the volume of the first sub-cavity is much larger than the volume of the second sub-cavity. The cell assembly 120 is installed inside the first sub-cavity. Optionally, the second sub-cavity can be used to provide heat dissipation for the liquid cooling plate or to house and isolate electrical components and battery pack reinforcement structures.

[0054] Specifically, the first cover 112, the second cover 113, and the support plate 114 are respectively sealed to the frame 111 to form a multi-seal structure, which improves the sealing effect of the battery and the electrical equipment. Moreover, this application concentrates multiple sealing functions into the first side beam 1111 of the frame 111, which can improve the overall integration and increase the space utilization rate while meeting the relevant sealing requirements.

[0055] Secondly, this application proposes an electrical device that includes the battery pack 100 of the first aspect.

[0056] In the above embodiments, the power-consuming device of the second aspect includes the battery pack 100 of the first aspect. Therefore, the power-consuming device of the second aspect has at least all the technical effects of the battery pack 100 of the first aspect, and its specific technical effects will not be described in detail here.

[0057] The embodiments of this application only illustrate the structure of the electrical equipment related to the improvement points of this application in the second aspect, but it does not mean that it does not have other structures. For example, the electrical equipment also includes a battery charging and discharging protection system, a battery auxiliary heat dissipation system, etc. Other structures will not be described one by one here.

[0058] In particular, the term "and / or" in this application should be understood as follows:

[0059] In the first case, the term “and / or” located between the first subject and the second subject includes any of the following meanings: (1) only the first subject; (2) only the second subject; and (3) both the first subject and the second subject.

[0060] In the second case, the term "and / or" between the last two of three or more items presents that at least any of the items can be included. For example, "a first item, a second item, and / or a third item" has the same meaning as "a first item, and / or a second item, and / or a third item", specifically including the combinations: (1) only the first item; (2) only the second item; (3) only the third item; (4) the first item and the second item and not the third item; (5) the first item and the third item and not the second item; (6) the second item and the third item and not the first item; and (7) all of the first, second, and third items.

[0061] In addition, the character " / " in the present application generally represents that the associated objects before and after it are in an "or" relationship.

[0062] Finally, although the above describes the embodiments of the present application in conjunction with the drawings, various modifications and changes can be made by those skilled in the art without departing from the spirit and scope of the present application, and such modifications and changes are intended to fall within the scope of the present application.

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 in that, The battery cell group (120) is located in the cavity formed by the cover and the frame (111); the frame (111) and the battery cell group (120) have a first gap (J1) and a second gap (J2); the first gap (J1) is located on at least one side of the battery cell group (120) along the first direction (X) and extends along the second direction (Y); the second gap (J2) is located on at least one side of the battery cell group (120) along the second direction (Y) and extends along the first direction (X); and the first gap (J1) and the second gap (J2) are filled with a glue layer. A glue blocking block (K) is arranged between the first gap (J1) and the second gap (J2) to separate the first gap (J1) and the second gap (J2); the glue blocking block (K) is connected to the battery cell group (120) and the frame (111) respectively; and one end of the glue blocking block (K) along the third direction (Z) is connected to the cover. The height of the glue blocking block (K) along the third direction (Z) is greater than or equal to the height of the battery cell group (120).

2. The battery pack of claim 1, wherein, The glue blocking block (K) has a square structure.

3. The battery pack of claim 1, wherein, Or the glue blocking block (K) has an L-shaped structure and includes a first part and a second part connected to each other and arranged at an angle; the first part is located on one side of the first gap (J1) along the second direction (Y); the second part is located on one side of the second gap (J2) along the first direction (X); the two side walls of the first part along the first direction (X) are connected to the battery cell group (120) and the frame (111) respectively; the two side walls of the second part along the second direction (Y) are connected to the battery cell group (120) and the frame (111) respectively; and the same end of the first part and the second part along the third direction (Z) is connected to the cover. The battery cell group (120) includes a plurality of battery cell columns (121) and a plurality of side plates (1212); the side plates (1212) abut the battery cell columns (121); and the plurality of battery cell columns (121) and the plurality of side plates (1212) are arranged alternately along the first direction (X).

4. The battery pack of claim 1, wherein, ​ The side frame (111) includes a first side beam (1111) located at one end of the side frame (111) along the second direction (Y), and the second gap (J2) is arranged between the first side beam (1111) and the cell column (121). Along the second direction (Y), at least one end of the side plate (1212) protrudes towards the first side beam (1111) relative to the cell column (121) to form a protruding portion (B), and the protruding portion (B) is located in the second gap (J2).

5. The battery pack of claim 4, wherein, An injection channel (D) is arranged between the first side beam (1111) and the protruding portion (B), and the injection channel is configured to allow glue to pass from one side of the side plate (1212) to the other side along the first direction (X).

6. The battery pack of claim 4, wherein, The cell column (121) includes a plurality of cells (1211) and a plurality of end plates (1213) arranged alternately along the second direction (Y), and the end plates (1213) have a spacing with the adjacent side plates (1212) at both ends along the first direction (X).

7. The battery pack of claim 5, wherein, The protruding portion (B) is in abutment with the first side beam (1111), and one end of the protruding portion (B) towards the first side beam (1111) is recessed away from the first side beam (1111) to form a recessed slot (C), and the recessed slot (C) is formed along the first direction (X) through the protruding portion (B), and the recessed slot (C) forms the injection channel (D).

8. The battery pack of claim 5, wherein, The protruding portion (B) is in abutment with the first side beam (1111), and the protruding portion (B) is provided with a through hole (G) extending along the first direction (X), and the through hole forms the injection channel (D).

9. The battery pack of claim 4, wherein, The height of the protruding portion (B) along the third direction (Z) is less than that of the cell group (120).

10. An electric device, characterized by The battery pack (100) of any one of claims 1 to 9. The battery pack (100) of any one of claims 1 to 9.

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