Battery pack and electric equipment comprising same
By employing alternating side plates and adhesive-limiting strips in the battery pack, the problem of uncontrollable adhesive diffusion was solved, achieving effective control of the adhesive and stable bonding of the battery cells, thus improving the production operation and connection effect of the battery pack.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-31
- Publication Date
- 2026-03-31
AI Technical Summary
When the battery cells are clamped in the side panel of the existing battery pack, the spread of adhesive is uncontrollable, resulting in some areas not being covered with adhesive, which affects the production operation of the battery pack and the protection of the battery cells.
The system employs a structure of alternating side plates and adhesive-limiting strips. The side plates are equipped with U-shaped grooves and adhesive areas to restrict the direction of adhesive diffusion, ensuring that the adhesive flows only in a specific direction and achieving effective bonding between the side plates and the battery cell.
Effective control of adhesive distribution prevents overflow from affecting the assembly of other components, enhances the structural connection stability of the battery pack, and controls the coating thickness of the adhesive area.
Smart Images
Figure CN224067793U_ABST
Abstract
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, the battery pack clamps multiple battery cells by using side plates to form a battery cell group, and the process is usually to glue in the middle area of the side plate. When the side plate is pressed against the side surface of the battery cell, the glue will spread out in all directions. However, due to the uncontrollable nature of glue spreading, some places may not be covered with glue, resulting in that the side plate and the battery cell are not glued in some areas, and the remaining places of the battery cell, such as the upper and lower ends of the battery cell, are covered with glue, which affects the subsequent production operation of the battery pack. CONTENT OF THE UTILITY MODEL
[0004] The purpose of the present application is to solve at least part of the technical problems mentioned above, 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 having a first sub-cavity; the battery cell group is located in the first sub-cavity; wherein the battery cell group comprises a plurality of battery cell columns and a plurality of side plates, the plurality of battery cell columns and the plurality of side plates are arranged alternately along the first direction; the side plate comprises a plate body and a first glue limiting strip and a second glue limiting strip, the first glue limiting strip and the second glue limiting strip are located on the opposite sides of the plate body along the third direction, the first glue limiting strip has a first U-shaped groove at one end facing the plate body, and one end of the plate body along the third direction is embedded into the first U-shaped groove; the plate body has a first face facing an adjacent one of the battery cell columns along the first direction, and the second glue limiting strip is at least partially located on the first face; the first face has a glue adhesion area, and the glue adhesion area is located between the first glue limiting strip and the second glue limiting strip; the battery cell column comprises a plurality of battery cells arranged along the second direction, the battery cell has a first side face facing the adjacent first face, the first glue limiting strip and the second glue limiting strip abut against the first side face, and the glue adhesion area at least partially corresponds to the first side face along the first direction.
[0006] In some embodiments, along the third direction, the height of the side plate is H1, the height of the first side face is H2, and H1≤H2.
[0007] In some embodiments, the first glue-limiting strip comprises a main segment and a branch segment, the first U-shaped groove is located at one end of the main segment along the third direction, the branch segment is connected to one end of the main segment along the third direction and located at one side of the first U-shaped groove along the first direction, the plate body is embedded in the first U-shaped groove and the branch segment is located at the first surface; wherein along the first direction, the branch segment has a first projection on the plate body, two second projections on the plate body are located between the first projection and the two second projections along the second direction.
[0008] In some embodiments, the second glue-limiting strip has a second U-shaped groove at one end facing the plate body, and the plate body is embedded in the first U-shaped groove and the second U-shaped groove at opposite ends along the third direction.
[0009] In some embodiments, the cell column further comprises an end plate, one end of the cell along the second direction has a second surface, the end plate is attached to the second surface of the cell and located between the two adjacent side plates, and the end plate has a gap between the two adjacent plate bodies along the first direction.
[0010] In some embodiments, the end plate is a nano-thermal insulation pad or a MPP foam pad.
[0011] In some embodiments, the plate body has a central axis surface perpendicular to the third direction, and the first glue-limiting strip and the second glue-limiting strip are mirror-symmetrically arranged relative to the central axis surface.
[0012] In some embodiments, the box body comprises a support plate and a frame, the frame has openings at both ends along the third direction, the support plate is connected to the frame and covers one of the openings, the support plate and the frame together define a first sub-cavity, and a plurality of cell columns are connected to the support plate at one side along the third direction. The frame comprises two side beams arranged opposite to each other along the second direction, and in the second direction, the cell column has a gap with at least one of the two side beams; the battery pack further comprises a glue body arranged in the gap.
[0013] In some embodiments, one end of the side plate along the second direction extends into the gap and is connected to the corresponding side beam, a through hole is formed in the side plate, the through hole penetrates the side plate along the first direction, and the through hole corresponds to the gap, and the glue body is arranged in the through hole.
[0014] In a second aspect, the application provides a power-consuming device comprising 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 glue limiting strip and the second glue limiting strip on the side plate can limit the overflow of the glue in the middle region of the plate body to the two sides in the third direction, affect the assembly of other components in the battery pack, so that the glue in the gluing area can only flow in the second direction, realize the bonding of the side plate and the first side surface of the plurality of battery cells; in addition, the thickness of the first glue limiting strip and the second glue limiting strip can also limit the coating thickness of the glue in the gluing area; and the one end of the plate body along the third direction is embedded into the first U-shaped groove of the first glue limiting strip, so that the plate body and the first glue limiting strip have good connection effect. 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] Figure 6 The partial structure schematic diagram of the side plate described in some embodiments of the present application.
[0025] Specifically, the annotations of the drawings of the specification are as follows:
[0026] 100, battery pack; 110, box body; 120, battery cell group; 130, cover body; 121, battery cell column; 1211, battery cell; 111, frame; 1111, side beam; 1113, positioning part; 114, support plate; 1212, side plate; 1213, end plate; X, first direction; Y, second direction; Z, third direction; J, gap; B, plate body; Q, adhesive area; L1, first adhesive limiting strip; L2, second adhesive limiting strip; C1, first U-shaped groove; C2, second U-shaped groove; A1, first side surface; A2, second side surface; M1, first surface; W, main body section; F, branch section; H, opening; C3, first missing groove; C4, second missing groove; R, through hole. DETAILED DESCRIPTION
[0027] 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 are enumerated in detail. Therefore, other embodiments obtained based on the following embodiments are also within the protection scope of the present application without creative labor.
[0028] 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 are not intended to exclude the possibility that a feature can be provided as a plurality in some embodiments.
[0029] 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 possibility that other features are also present. Similarly, the terms "first", "second", etc. used herein to describe a plurality of features only indicate that the features are differentiated from each other, and such terms do not imply a sequence or order unless the context clearly indicates otherwise.
[0030] It should be understood that, unless the context clearly indicates otherwise, the terms "set", "connected", "mounted" should be understood broadly, for example, can be fixed connection, can also be detachable connection, or integral connection; 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.
[0031] In addition, for the convenience of description, the spatial relative terms will be used to describe the position of one feature relative to another feature, such as "inner", "outer", "end", "side", "upper", "middle", "lower", "high", "low", "axial", "circumferential", "radial", "horizontal", "vertical", "first direction", "second direction", and the like. It can be understood that the spatial relative relationship between two features should include other specific conditions other than those shown in the drawings.
[0032] The embodiments of the present application will be described below in conjunction with the drawings of the specification.
[0033] In the first aspect, with reference to Figures 1 to 6 The embodiments of the present application provide a battery pack 100, which has a first direction X, a second direction Y and a third direction Z intersecting with each other, and which includes a box body 110 and a cell group 120, the box body 110 has a first sub-cavity; the cell group 120 is located in the first sub-cavity. Wherein, as shown in Figure 2 and Figure 3 The cell group 120 includes a plurality of cell columns 121 and a plurality of side plates 1212, which are arranged alternately along the first direction X. As shown in Figure 3 and Figure 6 The side plate 1212 includes a plate body B and a first glue limiting strip L1 and a second glue limiting strip L2, the first glue limiting strip L1 and the second glue limiting strip L2 are located on the opposite sides of the plate body B along the third direction Z, the first glue limiting strip L1 has a first U-shaped groove C1 at one end thereof facing the plate body B, and one end of the plate body B along the third direction Z is embedded into the first U-shaped groove C1; the plate body B has a first surface M1 facing an adjacent one of the cell columns 121 along the first direction X, and the second glue limiting strip L2 is at least partially located on the first surface M1; the first surface M1 has a glue area Q, and the glue area Q is located between the first glue limiting strip L1 and the second glue limiting strip L2; the cell column 121 includes a plurality of cells 1211 arranged along the second direction Y, the cell 1211 has a first side surface A1 facing an adjacent one of the first surfaces M1, the first glue limiting strip L1 and the second glue limiting strip L2 abut against the first side surface A1, and the glue area Q corresponds to the first side surface A1 at least partially along the first direction X.
[0034] In the embodiment, the first sub-cavity of the box body 110 is used to accommodate the battery cell group 120, the battery cell group 120 includes battery cell columns 121 and side plates 1212 which are arranged alternately along the first direction X, the side plates 1212 play a limiting and protecting role for the battery cell columns 121; the side plates 1212 are respectively provided with a first glue limiting strip L1 and a second glue limiting strip L2 at both ends along the third direction Z, so as to avoid the glue in the middle region of the plate body B from overflowing from both ends thereof along the third direction Z, thereby affecting the assembly of other components in the battery pack 100, that is, the glue in the glue area Q mainly diffuses along the second direction Y, and the adhesion between the side plates 1212 and the first side surface A1 of the plurality of battery cells 1211 is realized; in addition, the first glue limiting strip L1 and the second glue limiting strip L2 are in abutment with the first side surface A1 of the battery cell 1211, that is, the glue can only be distributed in the space surrounded by the first glue limiting strip L1, the second glue limiting strip L2, the first surface M1 of the plate body B and the first side surface A1 of the battery cell 1211, which also means that the thickness of the first glue limiting strip L1 and the second glue limiting strip L2 can limit the coating thickness of the glue in the glue area Q. Moreover, one end of the plate body B along the third direction Z is embedded into the first U-shaped groove C1 of the first glue limiting strip L1, so that the plate body B and the first glue limiting strip L1 have good connection effect.
[0035] In some embodiments, as shown in Figure 3 along the third direction Z, the height of the side plate 1212 is H1, the height of the first side surface A1 is H2, and H1≤H2.
[0036] Optionally, along the first direction X, the size of the first glue limiting strip L1 and the second glue limiting strip L2 protruding relative to the first surface M1 is d1, and 0.5mm≤d1≤5mm.
[0037] In the embodiment, the height of the side plate 1212 is less than or equal to the height of the first side surface A1 of the battery cell 1211, so as to avoid the glue between the side plate 1212 and the battery cell 1211 from overflowing from both ends of the battery cell 1211 along the third direction Z. In addition, the protruding thickness d1 of the first glue limiting strip L1 and the second glue limiting strip L2 relative to the first surface M1 should not be too large, otherwise a large space in the battery pack 100 will be occupied, and at the same time, the protruding thickness d1 should not be too small, otherwise it is difficult to limit the glue in the glue area Q, therefore, d1 should be moderate, for example, d1 can be any one of 0.5mm, 0.8mm, 1mm, 1.5mm, 2mm, 2.5mm, 3mm, 3.5mm, 4mm, 4.5mm, 5mm or a range between any two values.
[0038] In some embodiments, referring to Figure 6The first limiting glue strip L1 includes a main body segment W and a branch segment F. The first U-shaped groove C1 is located at one end of the main body segment W along the third direction Z. The branch segment F is connected to the one end of the main body segment W along the third direction Z and is located at one side of the first U-shaped groove C1 along the first direction X. The plate body B is embedded in the first U-shaped groove C1, and the branch segment F is located on the first surface M1. Along the first direction X, the branch segment F has a first projection on the plate body B. Two adjacent battery cells 1211 along the second direction Y have two second projections on the plate body B. The first projection is at least partially located between the two second projections.
[0039] It should be noted that the branch segment F is mainly located between the two adjacent battery cells 1211, thereby further limiting the glue overflow area. In actual glue coating, the glue coating area includes multiple spaced areas. The multiple glue coating areas are arranged along the extension direction of the first surface M1. Each glue coating area corresponds to the first side surface A1 of one battery cell 1211. The branch segment F simultaneously separates the two adjacent glue coating areas. An initial glue group is placed on the glue coating area. The glue group will be dispersed when being pressed. Specifically, the branch segment F can be arranged on the first limiting glue strip L1 and the second limiting glue strip L2. In this way, the glue can be limited to flow along the second direction Y from the middle of the plate body B as much as possible.
[0040] In some embodiments, referring to Figure 6 The end of the second limiting glue strip L2 towards the plate body B has a second U-shaped groove C2. The opposite ends of the plate body B along the third direction Z are respectively embedded in the first U-shaped groove C1 and the second U-shaped groove C2.
[0041] It can be understood that the first limiting glue strip L1 and the second limiting glue strip L2 are buckled to the two ends of the plate body B along the third direction Z through the first U-shaped groove C1 and the second U-shaped groove C2 thereon. The connection is firm and the design is reasonable.
[0042] In some embodiments, referring to Figure 4 The battery cell column 121 further includes an end plate 1213. One end of the battery cell 1211 along the second direction Y has a second side surface A2. The end plate 1213 is attached to the second side surface A2 of the battery cell 1211 and is located between the two adjacent side plates 1212. The two ends of the end plate 1213 along the first direction X are spaced apart from the adjacent two plate bodies B. In some embodiments, the end plate 1213 is a nano thermal insulation pad or an MPP foam pad.
[0043] It should be noted that the end plate 1213 can play a role in isolating heat, avoiding the influence of a single battery cell 1211 on other adjacent battery cells 1211 after thermal failure, and causing a chain reaction. Moreover, the end plate 1213 can also play a role in buffering and shock absorption of the battery pack 100 after being impacted. The two ends of the end plate 1213 are spaced apart from the adjacent two side plates 1212, facilitating assembly and avoiding mutual influence.
[0044] In some embodiments, the plate body B has a central axial plane perpendicular to the third direction Z, and the first glue limiting strip L1 and the second glue limiting strip L2 are symmetrically arranged relative to the central axial plane.
[0045] In the present embodiment, the first glue limiting strip L1 and the second glue limiting strip L2 are symmetrically arranged relative to the central axial plane, that is, the first glue limiting strip L1 and the second glue limiting strip L2 have the same size in the third direction Z, so that the glue in the glue area Q is not too close to any end of the plate body B in the third direction Z, and the glue can flow in the middle of the plate body B in the second direction Y.
[0046] In some embodiments, the box body 110 includes a support plate 114 and a frame 111, as shown in Figure 3 and Figure 5 , the frame 111 has openings H at both ends in the third direction Z, the support plate 114 is connected to the frame 111 and covers one of the openings H, the support plate 114 and the frame 111 together define a first sub-cavity, and a plurality of cell columns 121 are connected to the support plate 114 on one side in the third direction Z. The frame 111 includes two side beams 1111 oppositely arranged in the second direction Y, and in the second direction Y, the cell columns 121 have a gap J with at least one of the two side beams 1111. The battery pack 100 further includes glue, which is arranged in the gap J.
[0047] In the present embodiment, the support plate 114 and the frame 111 define the first sub-cavity. The cell columns 121 can be connected to one side beam 1111 on one end in the second direction Y, and have a gap J between the other end in the second direction Y and the other side beam 1111; or the cell columns 121 have a gap J between both ends in the second direction Y and the two side beams 1111, respectively.
[0048] In some embodiments, referring to Figure 4 and Figure 6 , one end of the side plate 1212 extends into the gap J and is connected to the corresponding side beam 1111 in the second direction Y, a through hole R is formed in the side plate 1212, the through hole R penetrates the side plate 1212 in the first direction X, the through hole R corresponds to the gap J, and glue is arranged in the through hole R.
[0049] In the present embodiment, the side plate 1212 extends into the gap J and is connected to the side beam 1111, and when the battery pack 100 collides, the side plate 1212 collides with the side beam 1111 before the cell 1211 and transmits force, thereby protecting the cell 1211.
[0050] In addition, the end of the side plate 1212 connected with the side beam 1111 can be provided with a through hole R, and / or the edge of the end of the side plate 1212 connected with the side beam 1111 is provided with a first missing slot C3. Understandably, the through hole R and the first missing slot C3 can be used for the passage of the gel.
[0051] In particular, the shape of the through hole R can be a circular hole, but also a square hole, a triangular hole, etc. The embodiment does not limit the shape of the through hole R. The number of through holes R can be one, which can be located at any end of the side plate 1212 along the third direction Z, or in the middle of the side plate 1212 along the third direction Z. The number of through holes R can also be multiple, and multiple through holes R can be distributed on the side plate 1212 along the third direction Z.
[0052] Similarly, the embodiment also does not limit the shape and number of the first missing slot C3, that is, the shape of the first missing slot C3 can be an arc-shaped slot, a rectangular slot, a triangular slot, etc. The number of the first missing slot C3 can be one, which can be located at any end of the side plate 1212 along the third direction Z, or in the middle of the side plate 1212 along the third direction Z. The number of the first missing slot C3 can also be multiple, and multiple first missing slots C3 can be distributed on the side plate 1212 along the third direction Z.
[0053] Alternatively, along the third direction Z, the height of the side plate 1212 is lower than that of the side beam 1111. Understandably, the lower height of the side plate 1212 is conducive to the flow of the gel from above.
[0054] In some embodiments, referring to Figure 3 and Figure 6 , the edge of the side plate 1212 along the second direction Y is also provided with a second missing slot C4, one end of the side beam 1111 along the third direction Z protrudes towards the side plate 1212 and forms a positioning portion 1113, and the second missing slot C4 matches the positioning portion 1113. Specifically, the side plate 1212 abuts against the positioning portion 1113 of the side beam 1111 through the second missing slot C4, thereby strengthening the structural strength of the whole.
[0055] Alternatively, referring to Figure 3 , the positioning portion 1113 has a weight-reducing cavity, and the support plate 114 is assembled to the bottom end of the positioning portion 1113 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, thereby increasing the space utilization rate. The locking accessory is used to enhance the firmness of the structure connection, and also can increase the sealing effect of the battery pack 100.
[0056] In the above embodiments, the cross-sectional shape of the weight-reducing cavity can be rectangular, square, trapezoidal, circular, etc. Alternatively, referring to Figure 3The positioning portion 1113 protrudes inward by a dimension d, and d satisfies 10 mm≤d≤60 mm. Specifically, on one hand, the dimension d of the positioning portion 1113 protruding inward cannot be too small, otherwise it will cause assembly difficulty between the positioning portion 1113 and the support plate 114, and the weight-reducing cavity on the positioning portion 1113 cannot play a weight-reducing effect, and the weight-reducing cavity cannot accommodate the locking member. On the other hand, the dimension d of the positioning portion 1113 protruding inward cannot be too large, otherwise it will occupy too much space in the battery pack 100, and the positioning portion 1113 can even interfere with other components. Therefore, the dimension d of the positioning portion 1113 protruding inward should be moderate, for example, d can be any one of 10 mm, 15 mm, 20 mm, 25 mm, 30 mm, 35 mm, 40 mm, 45 mm, 50 mm, 55 mm, 60 mm or a range between any two of them.
[0057] Specifically, in some embodiments, referring to Figure 1 and Figure 3 The box body 110 further includes a cover body 130, which is arranged opposite to the support plate 114 along the third direction Z. The cover body 130 and the support plate 114 cover two openings H of the frame 111 along the third direction Z and form a first sub-cavity, respectively.
[0058] Optionally, the frame 111 includes four side beams 1111 connected end to end to form a square frame. In some embodiments, the cell groups 120 are arranged in order and form a square structure matching the frame 111, thereby fully utilizing the space and increasing the volume energy density of the battery pack 100.
[0059] In some embodiments, referring to Figure 2 The length of the two side beams 1111 extending along the first direction X is greater than the length of the two side beams 1111 extending along the second direction Y. Correspondingly, the cell groups 120 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. The cell 1211 has adjacent first and second side surfaces A1 and A2, wherein the area of the first side surface A1 is smaller than the area of the second side surface A2. In particular, the second side surface A2 of all cells 1211 faces the side beam 1111 extending along the first direction X, and the first side surface A1 of all cells 1211 faces the side beam 1111 extending along the second direction Y. That is, it can be understood that the wide side of the frame 111 is opposite to the wide surface of the cell 1211, and the narrow side of the frame 111 is opposite to the narrow surface of the cell 1211. The layout is reasonable and waste of space is avoided as much as possible.
[0060] In some embodiments, the support plate 114 is a liquid cooling plate; it can be understood that, in some embodiments, the support plate 114 can only play a role of supporting the battery cell 1211 in the third direction Z, and does not have a role of cooling and heat dissipation; compared with this, the support plate 114 is a liquid cooling plate, and a flow channel can be arranged inside the support plate 114 to flow a fluid medium, so as to absorb and transfer the heat emitted by the battery cell 1211, keep the temperature of the battery pack 100 within a reasonable range, realize integration of the two structures of support and heat dissipation, and further improve the space utilization rate in the battery pack 100. It should be noted that the above two embodiments both belong to the protection scope of the present application.
[0061] In some embodiments, the battery pack 100 can further be provided with a second sub-cavity adjacent to the first sub-cavity, the space volume of the first sub-cavity is much larger than that of the second sub-cavity, and the battery cell group 120 is installed inside the first sub-cavity. Optionally, the second sub-cavity can be used for heat dissipation of the liquid cooling plate or can be used for accommodating, isolating electrical elements, and battery pack reinforcing structures, etc.
[0062] In the second aspect, the embodiments of the present application provide a power consumption device including the battery pack 100 of the first aspect.
[0063] In the above embodiments, the power consumption device of the second aspect includes the battery pack 100 of the first aspect, so that the power consumption device of the second aspect has at least all the technical effects of the battery pack 100 of the first aspect, and the specific technical effects are not described here.
[0064] The embodiments of the present application only illustrate the structure of the power consumption device of the second aspect related to the improvement points of the present application, but do not mean that it does not have other structures, for example, the power consumption device further includes a battery charge and discharge protection system, a battery auxiliary heat dissipation system, etc., and other structures are not described here.
[0065] In particular, the term “and / or” in the present application should be understood as follows:
[0066] The first case, the term “and / or” 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) the first subject and the second subject.
[0067] 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.
[0068] In addition, the character " / " in the present application generally represents that the associated objects before and after it are in an "or" relationship.
[0069] 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 first sub-cavity of the box body (110). The battery cell group (120) includes a plurality of battery cell columns (121) and a plurality of side plates (1212), and the plurality of battery cell columns (121) and the plurality of side plates (1212) are arranged alternately along the first direction (X). The side plate (1212) includes a plate body (B), a first glue limiting strip (L1), and a second glue limiting strip (L2). The first glue limiting strip (L1) and the second glue limiting strip (L2) are located on opposite sides of the plate body (B) along the third direction (Z), respectively. The first glue limiting strip (L1) has a first U-shaped groove (C1) at one end of the plate body (B) facing the plate body (B), and one end of the plate body (B) along the third direction (Z) is embedded in the first U-shaped groove (C1). The plate body (B) has a first face (M1) facing an adjacent one of the battery cell columns (121) along the first direction (X), and the second glue limiting strip (L2) is at least partially located on the first face (M1). The first face (M1) has a glue sticking area (Q), and the glue sticking area (Q) is located between the first glue limiting strip (L1) and the second glue limiting strip (L2). The battery cell column (121) includes a plurality of battery cells (1211) arranged along the second direction (Y). The battery cell (1211) has a first side face (A1) facing an adjacent one of the first faces (M1). The first glue limiting strip (L1), the second glue limiting strip (L2), and the glue sticking area (Q) are all in contact with the first side face (A1) along the first direction (X). Along the third direction (Z), the height of the side plate (1212) is H1, the height of the first side face (A1) is H2, and H1≤H2.
2. The battery pack of claim 1, wherein, The first glue limiting strip (L1) includes a main body segment (W) and a branch segment (F). The first U-shaped groove (C1) is located at one end of the main body segment (W) along the third direction (Z). The branch segment (F) is connected to one end of the main body segment (W) along the third direction (Z) and located on one side of the first U-shaped groove (C1) along the first direction (X). The plate body (B) is embedded in the first U-shaped groove (C1), and the branch segment (F) is located on the first face (M1).
3. The battery pack of claim 1, wherein, Along the first direction (X), the branch segment (F) has a first projection on the plate body (B). Two adjacent battery cells (1211) along the second direction (Y) have two second projections on the plate body (B). The first projection is at least partially located between the two second projections. The second glue limiting strip (L2) has a second U-shaped groove (C2) at one end facing the plate body (B). The opposite ends of the plate body (B) along the third direction (Z) are embedded in the first U-shaped groove (C1) and the second U-shaped groove (C2), respectively.
4. The battery pack of claim 1, wherein, 5. The battery pack of any one of claims 1 to 4, wherein, The cell column (121) further comprises an end plate (1213), one end of the cell (1211) in the second direction (Y) has a second side (A2), the end plate (1213) is attached to the second side (A2) and located between two adjacent side plates (1212), and the two ends of the end plate (1213) in the first direction (X) are spaced apart from two adjacent plate bodies (B).
6. The battery pack of claim 5, wherein, The end plate (1213) is a nano thermal insulation pad or MPP foam pad.
7. The battery pack of claim 1, wherein, The plate body (B) has a central axis surface perpendicular to the third direction (Z), and the first limiting glue strip (L1) and the second limiting glue strip (L2) are mirror symmetrically arranged relative to the central axis surface.
8. The battery pack of claim 1, wherein, The box (110) comprises a support plate (114) and a frame (111), the frame (111) has openings (H) at both ends in the third direction (Z), and the support plate (114) is connected to the frame (111) and covers one of the openings (H); the support plate (114) and the frame (111) together define a first sub-cavity, and a plurality of cell columns (121) are connected to the support plate (114) on one side in the third direction (Z); The frame (111) comprises two side beams (1111) oppositely arranged in the second direction (Y), and in the second direction (Y), the cell column (121) has a gap (J) with one of the two side beams (1111); The battery pack (100) further comprises a glue body, and the glue body is arranged in the gap (J).
9. The battery pack of claim 8, wherein, One end of the side plate (1212) in the second direction (Y) extends into the gap (J) and is connected to the corresponding side beam (1111), a through hole (R) is formed in the side plate (1212), the through hole (R) penetrates the side plate (1212) in the first direction (X), and the through hole (R) corresponds to the gap (J), and the through hole (R) is provided with the glue body.
10. An electric device, characterized by The battery pack (100) comprises the battery pack (100) according to any one of claims 1-9. The battery pack (100) comprises the battery pack (100) according to any one of claims 1-9.