Battery module, battery pack, and electric device

Abstract

The application relates to a battery module, a battery pack and a power utilization device, comprising: battery units, at least two rows of battery units are sequentially arranged along a first direction, each row of battery units comprises a plurality of battery monomers sequentially arranged along a second direction; a side plate is clamped between two adjacent rows of battery units, and at least one side of the side plate along the second direction is provided with a connecting part; an end plate is arranged on at least one side of the plurality of rows of battery units along the second direction, and the end plate comprises a first part and a second part sequentially connected along a third direction, the first part is provided with a connecting groove on the side thereof facing the battery units along the second direction, and the position of the connecting groove corresponds to the position of the side plate and cooperates with the connecting part; the first direction, the second direction and the third direction intersect with each other; wherein the connecting part is inserted into the connecting groove to connect the side plate between the two adjacent rows of battery units, and the second part of the end plate, the side plate and the two adjacent rows of battery units jointly define a glue gap.

Description

Technical Field

[0001] This utility model relates to the field of battery technology, and in particular to a battery module, a battery pack, and an electrical device. Background Technology

[0002] With the rapid expansion and development of the new energy market, the market share of new energy vehicles is gradually increasing. As a result, the application of power batteries, the core component of new energy vehicles, is becoming increasingly widespread in people's lives.

[0003] A power battery module includes side plates, end plates, and multiple rows of battery cells. Side plates are positioned between adjacent rows of battery cells and are connected to the battery cells via adhesive. End plates are located at the ends of the battery cells to secure the multiple rows of battery cells. With this configuration, when the battery module is installed in the casing, the lack of side plates at the ends of adjacent rows of battery cells allows the adhesive at the bottom to easily overflow from the gap between the side plates and end plates to the top, causing adverse effects (such as abnormal electrical performance or increased maintenance costs). Furthermore, the squeezing and friction between the end plates and the casing during installation can cause the end plates to detach from the battery cells, increasing the difficulty of installing the battery module. Utility Model Content

[0004] Therefore, it is necessary to address the problem that the traditional battery module setup is prone to top glue overflow and end plate detachment from the battery cell, and to provide a battery module, battery pack, and power device that can avoid top glue overflow and end plate detachment from the battery cell.

[0005] In a first aspect, this application provides a battery module, including:

[0006] A battery cell, comprising at least two columns of battery cells arranged sequentially along a first direction, wherein each column of battery cells includes a plurality of battery cells arranged sequentially along a second direction;

[0007] A side plate is sandwiched between two adjacent rows of battery cells, and the side plate has a connecting portion on at least one side along the second direction;

[0008] An end plate is disposed on at least one side of the multiple rows of battery cells along the second direction. The end plate includes a first part and a second part connected sequentially along a third direction. The first part is provided with a connecting groove on the side facing the battery cell along the second direction, and the position of the connecting groove corresponds to the position of the side plate and cooperates with the connecting part. The first direction, the second direction and the third direction intersect each other.

[0009] The connecting portion is inserted into the connecting groove to connect the side plate between two adjacent rows of battery cells, and the second part of the end plate, the side plate, and the two adjacent rows of battery cells together define a glue gap.

[0010] In one embodiment, the first portion of the end plate has a limiting protrusion protruding along the second direction on the side near the battery cell. The limiting protrusion has a limiting gap communicating with the connecting groove, and a sealing block is provided in the limiting gap. Along the third direction, the side plate is disposed in the limiting gap and abuts against the sealing block.

[0011] In one embodiment, the limiting protrusion includes two limiting portions;

[0012] The battery module also includes an elastic element, the outer contours of the two limiting portions correspond to the battery cells at the ends of the two rows of battery units, and the elastic element is sandwiched between the corner portions of the battery cells at the ends.

[0013] In one embodiment, along the third direction, the connecting groove has an opening on the side away from the second portion and is closed on the side closer to the second portion; the connecting portion is inserted into the connecting groove through the opening;

[0014] and / or

[0015] The cross-sectional shape of the connecting groove is adapted to the shape of the connecting part.

[0016] In one embodiment, the second portion is provided with a guide slope at one end away from the first portion along the third direction, and the guide slope is provided along the second direction on the side of the second portion opposite to the battery cell;

[0017] The guide ramp is arranged gradually towards the battery cell from one end near the first part to the other end along the second direction.

[0018] In one embodiment, the second portion is provided with a guide hole through the second direction, and the guide hole is in communication with the adhesive gap.

[0019] In one embodiment, the second part has a guide portion protruding from the side facing the battery cell along the second direction. The guide portion extends along the third direction and has a guide surface. One end of the guide surface communicates with the guide hole, and the other end extends to the end face of the second part away from the first part.

[0020] and / or

[0021] The end plate is provided with an adhesive groove on the side facing away from the battery cell along the second direction, and the adhesive groove is connected to the adhesive guide hole.

[0022] In one embodiment, the end plate is further provided with an exhaust channel communicating with the adhesive groove on the side away from the battery cell along the second direction, and the exhaust channel has an exhaust port formed on the end face of the first part away from the second part along the third direction.

[0023] Secondly, this application also provides a battery pack, including a battery housing and the battery module described in the first aspect above, wherein the battery module is installed in the battery housing, and the side plate is spaced apart from the bottom wall of the battery housing.

[0024] Thirdly, this application also provides an electrical device including the battery pack described in the second aspect above.

[0025] Compared with the prior art, this application has the following beneficial effects:

[0026] In the aforementioned battery module, battery pack, and power device, the connecting part of the side plate is inserted into the connecting groove on the end plate. When the battery module is placed into the casing, the insertion of the connecting part and the connecting groove prevents the end plate from detaching from the battery cell due to squeezing and friction between it and the battery casing, thereby reducing the difficulty of placing the battery module into the casing. Furthermore, a gap for adhesive is formed between the second part of the end plate, the side plate, and the two adjacent rows of battery cells. When the battery module is placed into the casing, the adhesive at the bottom enters the adhesive gap, and the adhesive is not easily overflowed to the top of the battery module due to the blocking effect of the side plate, thereby avoiding the adverse effects of adhesive overflow from the top. Attached Figure Description

[0027] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiments below. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0028] Figure 1 This is a partial structural diagram of a battery module provided in one embodiment of this application;

[0029] Figure 2 for Figure 1 A structural diagram of the battery module shown from another perspective;

[0030] Figure 3 for Figure 1 A top view of the battery module shown;

[0031] Figure 4 for Figure 1 The diagram shows the structure of the end plate of the battery module.

[0032] Figure 5 for Figure 1 A structural diagram of a partial structure of the battery module shown;

[0033] Figure 6 for Figure 5 Enlarged view of section B of the structure shown;

[0034] Figure 7 for Figure 1 Another structural view of the battery module shown;

[0035] Figure 8 for Figure 1 An exploded view of a portion of the battery module shown;

[0036] Figure 9 for Figure 3 Enlarged view of section C of the battery module shown;

[0037] Figure 10 for Figure 4 Enlarged view of point A on the end plate shown;

[0038] Figure 11 for Figure 1 A structural diagram of a partial structure of the battery module shown;

[0039] Figure 12 for Figure 11 Enlarged view of point D of the battery module shown;

[0040] Figure 13 for Figure 1 Side view of the battery module shown;

[0041] Figure 14 for Figure 4 A structural diagram of the end plate from another perspective;

[0042] Figure 15 This is a partial structural diagram of a battery pack provided in one embodiment of this application.

[0043] Explanation of reference numerals in the attached figures:

[0044] 1000, Battery Pack; 100, Battery Module; 10, Battery Unit; 11, Battery Cell; 20, Side Plate; 21, Connecting Part; 30, End Plate; 31, First Part; 311, Connecting Groove; 32, Second Part; 321, Guide Surface; 322, Adhesive Guide Hole; 33, Limiting Protrusion; 331, Limiting Gap; 332, Limiting Part; 34, Adhesive Guide Part; 341, Adhesive Guide Surface; 35, Adhesive Receptacle; 36, Exhaust Channel; 361, Exhaust Port; 37, Sealing Block; 40, Adhesive Receptacle Gap; 50, Elastic Component; 60, Separator; 200, Battery Housing; Y, First Direction; X, Second Direction; Z, Third Direction. Detailed Implementation

[0045] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0046] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0047] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0048] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0049] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0050] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0051] See Figure 1 This application provides a battery module 100, which includes at least two rows of battery units 10 arranged sequentially along a first direction Y. Each row of battery units 10 includes a plurality of battery cells 11 arranged sequentially along a second direction X. In some specific embodiments, the battery module 100 includes two rows of battery units 10, and each row of battery units 10 includes an equal number of battery cells 11 arranged in a one-to-one correspondence. It is conceivable that in other embodiments, the number of rows of battery units 10 included in the battery module 100 is not limited. For example, the battery module 100 may also include three or more rows of battery units 10, and the number of battery cells 11 included in each row of battery units 10 may be equal or different.

[0052] See Figure 2 and Figure 3 The battery module 100 also includes a side plate 20 and an end plate 30. The side plate 20 is sandwiched between two adjacent rows of battery cells 10. Specifically, a side plate 20 is sandwiched between every two adjacent rows of battery cells 10, and the side plate 20 is fixed to the battery cell 11 by adhesive backing. The end plate 30 is disposed on at least one side of the multiple rows of battery cells 10 along the second direction X. Specifically, the multiple rows of battery cells 10 are provided with end plates 30 on both sides along the second direction X.

[0053] See Figures 4-6The end plate 30 includes a first part 31 and a second part 32 connected sequentially along a third direction Z. The first part 31 and the second part 32 are integrally formed. The first part 31 has a connecting groove 311 on the side facing the battery cell 10 along the second direction X. The position of the connecting groove 311 corresponds to the position of the side plate 20. The side plate 20 has a connecting part 21 on at least one side along the second direction X. The connecting part 21 cooperates with the connecting groove 311, that is, the connecting part 21 can be inserted into the connecting groove 311 so that the side plate 20 is kept between two adjacent rows of battery cells 10. The cooperation between the connecting groove 311 and the connecting part 21 adopts a "groove-convex" fitting structure, and the position of the connecting groove 311 is precisely aligned with the side plate 20. This not only enables the side plate 20 to be quickly positioned in the second direction X, but also restricts the displacement of the side plate 20 along the first direction Y and the third direction Z, ensuring that the spacing between multiple rows of battery cells 10 is uniform and avoiding uneven pressure on the battery cells 10 or blockage of heat dissipation channels due to the offset of the side plate 20. Compared to non-removable connection methods such as welding, this interlocking structure allows the side plate 20 to be quickly removed during maintenance or repair, facilitating the inspection, replacement or repair of the battery unit 10. Furthermore, the disassembly process does not damage the end plate, side plate or battery unit, and the structural components can be reused.

[0054] When the multi-row battery cell 10 has end plates 30 on both sides along the second direction X, the side plate 20 has connecting portions 21 on both sides along the second direction X, and the connecting portion 21 on each side is inserted into the corresponding connecting groove 311 on that side. When the multi-row battery cell 10 has end plates 30 on both sides, the connecting portions 21 on both sides of the side plate 20 are respectively engaged with the connecting grooves 311 of the corresponding end plates 30 to form a bidirectional constraint structure, which makes the side plate 20 more firmly fixed inside the battery pack, effectively resists the lateral thrust generated when the battery cell 10 expands, reduces the risk of deformation or detachment of the side plate 20, and ensures the overall structural integrity of the battery pack.

[0055] Generally, the connecting part 21 and the side plate 20 are integrally formed. Of course, in some other embodiments, the connecting part 21 and the side plate 20 can also be manufactured separately and then connected.

[0056] The first direction Y, the second direction X, and the third direction Z intersect each other. Specifically, the first direction Y, the second direction X, and the third direction Z are perpendicular to each other. In some embodiments, the battery module 100 has a cuboid structure, the second direction X is the length direction of the battery module 100, the first direction Y is the width direction of the battery module 100, and the third direction Z is the height direction of the battery module 100.

[0057] See Figure 7The second part 32, the side plate 20, and the two adjacent rows of battery cells 10 together form the adhesive gap 40. Since the second part 32, the side plate 20, and the two adjacent rows of battery cells 10 can jointly form the adhesive gap 40, the position of the side plate 20 corresponding to the second part 32 is missing. That is, the dimension of the side plate 20 in the third direction Z is smaller than the dimension of the end plate 30 in the third direction Z, so that the position of the side plate 20 corresponding to the second part 32 of the end plate 30 forms a missing portion. When the position of the side plate 20 corresponding to the second part 32 forms a missing portion, the adhesive gap 40 can be formed between the second part 32, the side plate 20, and the two adjacent rows of battery cells 10. It should be noted that although this application limits the formation of the adhesive gap 40 between the second part 32, the side plate 20, and the two adjacent rows of battery cells 10, it does not exclude the possibility that part of the first part 31 may also participate in forming the adhesive gap 40. That is, in some cases, the adhesive gap 40 can be formed by only the second part 32, the side plate 20 and the two adjacent rows of battery cells 10, while in other cases, part of the first part 31 also participates in forming the adhesive gap 40.

[0058] In some specific embodiments, the dimension of the side plate 20 in the third direction Z is half that of the end plate 30. Of course, in other embodiments, the dimensions of the side plate 20 and the end plate 30 in the third direction Z are not specifically limited, and are selected as needed.

[0059] The battery module 100 provided in this application embodiment has a connecting portion 21 of the side plate 20 inserted into a connecting groove 311 on the end plate 30. When the battery module 100 is placed in the casing, the insertion of the connecting portion 21 and the connecting groove 311 can prevent the end plate 30 from detaching from the battery cell 10 under the squeezing friction between it and the battery casing 200, thereby reducing the difficulty of placing the battery module 100 in the casing. Furthermore, an adhesive gap 40 is formed between the second part 32 of the end plate 30, the side plate 20, and the two adjacent rows of battery cells 10. When the battery module 100 is placed in the casing, the adhesive at the bottom enters the adhesive gap 40, and under the blocking effect of the side plate 20, the adhesive is less likely to overflow to the top of the battery module 100, thereby avoiding the adverse effects of adhesive overflow from the top.

[0060] Optionally, see Figure 8 A separator 60 is provided between the battery cells 11 of the battery unit 10. The separator 60 not only improves the stability of the connection between the battery cells 11, but also plays a certain role in preventing glue from sticking.

[0061] In some embodiments, see Figure 9 Along the third direction Z, the connecting groove 311 has an opening on the side away from the second part 32, and the connecting groove 311 is closed on the side close to the second part 32. The connecting part 21 is inserted into the connecting groove 311 through the opening. This arrangement allows the connecting part 21 to be inserted into the connecting groove 311 through the opening, facilitating the assembly of the side plate 20 and the end plate 30.

[0062] It should be understood that in some other embodiments, the connecting part 21 may also be inserted into the connecting groove 311 from the side of the connecting groove 311 facing the battery unit 10, which is not limited here.

[0063] Optionally, the cross-sectional shape of the connecting groove 311 is adapted to the shape of the connecting part 21 to ensure the assembly effect of the connecting part 21 and the connecting groove 311, so as to reduce the displacement between the side plate 20 and the end plate 30.

[0064] It should be noted that the cross-section of the connecting groove 311 is formed by cutting the connecting groove 311 through a plane perpendicular to the third direction Z.

[0065] In some specific embodiments, the connecting part 21 is a cylindrical structure provided on the side plate 20. In this case, the cross-sectional shape of the connecting groove 311 is circular to reduce the displacement of the connecting part 21 in the connecting groove 311, thereby reducing the displacement between the side plate 20 and the end plate 30. The connecting part 21 and the connecting groove 311 adopt an insertion fit, which does not require additional fasteners (such as bolts or rivets). During assembly, the connecting parts 21 on both sides are aligned with the connecting groove 311 of the end plate and inserted to complete the fixation, which is convenient for assembly and disassembly.

[0066] In other embodiments, the cross-sectional shape of the connecting portion 21 and the connecting groove 311 is not limited and can be selected as needed.

[0067] See Figures 10-12 The first part 31 of the end plate 30 has a limiting protrusion 33 on the side near the battery unit 10 along the second direction X. A limiting gap 331 communicating with the connecting groove 311 is formed within the limiting protrusion 33. A sealing block 37 is provided within the limiting gap 331. The side plate 20 along the third direction Z is positioned within the limiting gap 331 and abuts against the sealing block 37. When the connecting part 21 is inserted into the connecting groove 311, the side plate 20 is located within the limiting gap 331. The limiting protrusion 33 serves to limit and guide the side plate 20, ensuring the perpendicularity of the side plate 20 to the end plate 30. Furthermore, the portion of the side plate 20 located within the limiting gap 331 also abuts against the sealing block 37, which provides support for the side plate 20, ensuring the connection stability between the side plate 20 and the end plate 30.

[0068] Furthermore, the limiting protrusion 33 includes two limiting portions 332. The battery module 100 also includes an elastic element 50. The outer contours of the two limiting portions 332 correspond to the end battery cells 11 of the two rows of battery units 10, and the elastic element 50 is sandwiched between the two limiting portions and the corner portions of the end battery cells 11. That is, see reference Figure 9After the battery module 100 is assembled, the elastic member 50 is clamped between the corner of the battery cell 11 at the end and the outer contour of the limiting part 332. The rebound force provided by the elastic member 50 after being compressed can make the connecting part 21 fit tightly against the inner wall of the connecting groove 311, thereby strengthening the fixing effect of the end plate 30.

[0069] Furthermore, the outer contour shape of the limiting part 332 is adapted to the contour shape of the corner of the end battery cell 11 so that the elastic member 50 can fit tightly between the battery cell 11 and the limiting part 332, further enhancing the fixing effect of the end plate 30.

[0070] Optionally, the elastic element 50 is elastic foam, which has better compression performance. Furthermore, an anti-aging treatment can be applied to the surface of the elastic foam to extend its service life and ensure that it still provides sufficient rebound force after long-term use. Of course, in some embodiments, the type of elastic element 50 is not limited; for example, the elastic element 50 can also be a rubber component.

[0071] In some embodiments, see Figure 12 The second part 32 has a through-hole 322 along the second direction X, which communicates with the adhesive gap 40. In this way, adhesive overflowing from the adhesive gap 40 can be guided to the outside through the through-hole 322, avoiding the adverse effects of excessive adhesive in the adhesive gap 40. In addition, the adhesive can flow through the through-hole 322 to the space between the end plate 30 and the battery box 200, thereby strengthening the connection between the end plate 30 and the battery box 200.

[0072] Specifically, the width of the adhesive guiding hole 322 in the first direction Y is greater than the width of the adhesive gap 40. That is, the width of the adhesive guiding hole 322 in the first direction Y is larger than the gap between two adjacent rows of battery cells 10 to ensure the adhesive guiding effect. Of course, in some other embodiments, the relationship between the width of the adhesive guiding hole 322 in the first direction Y and the width of the adhesive gap 40 is not limited.

[0073] Further reading Figure 6 The second part 32 has a guide portion 34 protruding from the side of the battery cell 10 along the second direction X. The guide portion 34 extends along the third direction Z and has a guide surface 341. One end of the guide surface 341 communicates with the guide hole 322, and the other end extends to the end face of the second part 32 away from the first part 31. In this way, the adhesive in the adhesive gap 40 can be guided into the guide hole 322 through the guide surface 341, so as to facilitate the discharge of adhesive in the adhesive gap 40.

[0074] See Figure 13 and Figure 14The end plate 30 has an adhesive-containing groove 35 on the side facing away from the battery cell 10 along the second direction X, and the adhesive-containing groove 35 is connected to the adhesive guiding hole 322. In this way, the adhesive guided through the adhesive guiding hole 322 enters the adhesive-containing groove 35. Since the groove wall of the adhesive-containing groove 35 and the battery box 200 together form a receiving space, the adhesive can be stored in the receiving space to facilitate the bonding and fixing of the end plate 30 and the battery box 200.

[0075] In some embodiments, see further reference. Figure 13 The end plate 30 is also provided with an exhaust channel 36 communicating with the adhesive container 35 on the side away from the battery cell 10 along the second direction X. The exhaust channel 36 has an exhaust port 361 formed on the end face of the first part 31 away from the second part 32 along the third direction Z. When the adhesive is discharged through the adhesive guide hole 322, it will carry gas. The carried gas can be discharged to the outside through the exhaust channel 36 to avoid the situation where there is too much adhesive in the container space and it cannot be discharged.

[0076] Optionally, the venting channel 36 can be tapered, that is, the cross-sectional area of ​​the venting channel 36 gradually decreases from one end near the glue container 35 to the other end. This is beneficial for venting and can also prevent glue from overflowing from the venting port 361 to a certain extent, thus avoiding adverse effects.

[0077] In some embodiments, see Figure 13 The second part 32 has a guide slope 321 at the end away from the first part 31 along the third direction Z. The guide slope 321 is located on the side of the second part 32 opposite to the battery cell 10 along the second direction X. The guide slope 321 is gradually positioned closer to the battery cell 11 from one end near the first part 31 to the other end along the second direction X. When the battery module 100 is placed into the box, the guide slope 321 serves as a guide to facilitate the placement of the battery module 100 into the box.

[0078] Optionally, the tilt angle between the guide ramp 321 and the third direction Z is controlled between 20° and 30°. This ensures the guiding effect while also giving the end plate 30 better strength.

[0079] See Figure 15 Another embodiment of this application provides a battery pack 1000, which includes a battery housing 200 and the aforementioned battery module 100. The battery module 100 is installed in the battery housing 200, and the side plate 20 is spaced apart from the bottom wall of the battery housing 200. This allows the adhesive at the bottom of the battery housing 200 to enter the adhesive gap 40. Since the battery module 100 has beneficial effects, the battery pack 1000 including the battery module 100 has the same beneficial effects, which will not be repeated here.

[0080] Optionally, the battery housing 200 is divided into multiple installation spaces by horizontal and vertical beams within it, and the battery pack 1000 includes multiple battery modules 100, each of which is installed in a different installation space. After the adhesive overflows into the adhesive reservoir 35, the end plate 30 of the battery module 100 is bonded and fixed to the horizontal and vertical beams by the adhesive.

[0081] Another embodiment of this application provides an electrical device including the battery pack 1000 described above. Since the battery pack 1000 has beneficial effects, the electrical device including the battery pack 1000 also has the same beneficial effects, which will not be described in detail here.

[0082] Optionally, the electrical device is a vehicle, which can be a gasoline vehicle, a natural gas vehicle, or a new energy vehicle. New energy vehicles can be pure electric vehicles, hybrid electric vehicles, or range-extended vehicles, etc.

[0083] It is worth noting that, for pure electric vehicles, the aforementioned battery pack 1000 can serve as a driving power source, thereby replacing fossil fuels to provide driving power.

[0084] In other embodiments, the type of electrical device is not limited. For example, the electrical device can also be a ship, spacecraft, electric toy, power tool, energy storage device, amusement equipment, elevator, and lifting equipment, etc. Spacecraft include airplanes, rockets, space shuttles, and spacecraft, etc.; electric toys include stationary or mobile electric toys, such as game consoles, electric car toys, electric ship toys, or electric airplane toys, etc.; power tools include metal cutting power tools, grinding power tools, assembly power tools, and railway power tools, such as electric drills, electric grinders, electric wrenches, electric screwdrivers, electric hammers, impact drills, concrete vibrators, and electric planers, etc.; energy storage devices can be energy storage walls, base station energy storage, container energy storage, etc.; amusement equipment can be a carousel, a drop tower, etc. This application does not impose any special limitations on the above-mentioned electrical devices.

[0085] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0086] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A battery module, characterized in that, include: The battery cell (10) comprises at least two columns of battery cells (10) arranged sequentially along a first direction (Y), and each column of battery cells (10) includes a plurality of battery cells (11) arranged sequentially along a second direction (X). A side plate (20) is sandwiched between two adjacent rows of battery cells (10), and the side plate (20) has a connecting portion (21) on at least one side along the second direction (X); An end plate (30) is disposed on at least one side of the multiple rows of battery cells (10) along the second direction (X). The end plate (30) includes a first part (31) and a second part (32) connected sequentially along a third direction (Z). The first part (31) has a connecting groove (311) on the side of the battery cell (10) along the second direction (X), and the position of the connecting groove (311) corresponds to the position of the side plate (20) and cooperates with the connecting part (21). The first direction (Y), the second direction (X) and the third direction (Z) intersect each other. The connecting part (21) is inserted into the connecting groove (311) to connect the side plate between two adjacent rows of battery cells (10), and the second part (32) of the end plate (30), the side plate (20) and the two adjacent rows of battery cells (10) together define the adhesive gap (40).

2. The battery module according to claim 1, characterized in that, The first part (31) of the end plate (30) has a limiting protrusion (33) protruding on the side of the battery cell (10) along the second direction (X). The limiting protrusion (33) has a limiting gap (331) communicating with the connecting groove (311). A sealing block (37) is provided in the limiting gap (331). Along the third direction (Z), the side plate (20) is located in the limiting gap (331) and abuts against the sealing block (37).

3. The battery module according to claim 2, characterized in that, The limiting protrusion (33) includes two limiting portions (332); The battery module also includes an elastic element (50), the outer contours of the two limiting parts (332) correspond to the battery cells (11) at the ends of the two rows of battery units (10), and the elastic element (50) is sandwiched between the corner of the battery cells (11) at the ends.

4. The battery module according to claim 1, characterized in that, Along the third direction (Z), the connecting groove (311) has an opening on the side away from the second part (32) and is closed on the side close to the second part (32); the connecting part (21) is inserted into the connecting groove (311) through the opening; and / or The cross-sectional shape of the connecting groove (311) is adapted to the shape of the connecting part (21).

5. The battery module according to claim 1, characterized in that, The second part (32) is provided with a guide slope (321) at one end away from the first part (31) along the third direction (Z), and the guide slope (321) is provided on the side of the second part (32) away from the battery cell (10) along the second direction (X); The guide ramp (321) is arranged from one end near the first part (31) to the other end along the second direction (X) gradually approaching the battery cell (10).

6. The battery module according to any one of claims 1-5, characterized in that, The second part (32) is provided with a guide hole (322) through it along the second direction (X), and the guide hole (322) is connected to the adhesive gap (40).

7. The battery module according to claim 6, characterized in that, The second part (32) has a guide portion (34) protruding on the side facing the battery cell (10) along the second direction (X). The guide portion (34) extends along the third direction (Z). The guide portion (34) has a guide surface (341). One end of the guide surface (341) is connected to the guide hole (322), and the other end extends to the end face of the second part (32) away from the first part (31). and / or The end plate (30) has an adhesive groove (35) on the side facing away from the battery cell (10) along the second direction (X), and the adhesive groove (35) is connected to the adhesive guide hole (322).

8. The battery module according to claim 7, characterized in that, The end plate (30) is also provided with an exhaust channel (36) communicating with the adhesive groove (35) on the side away from the battery cell (10) along the second direction (X). The exhaust channel (36) has an exhaust port (361) formed on the end face of the first part (31) away from the second part (32) along the third direction (Z).

9. A battery pack, characterized in that, It includes a battery housing (200) and a battery module as described in any one of claims 1-8, the battery module being installed in the battery housing (200), and the side plate (20) being spaced apart from the bottom wall of the battery housing (200).

10. An electrical appliance, characterized in that, Includes the battery pack as described in claim 9.

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