Battery pack and electric device

Abstract

The utility model discloses a battery pack and a power utilization device, the battery pack has a first direction and a second direction which are vertical, the battery pack comprises a box body, a plurality of battery packs, at least one side plate and a first adhesive layer, the box body comprises a bottom plate and a cross beam, and the bottom plate and the cross beam are connected to define an accommodating cavity for accommodating the battery packs; the side plate is arranged between two adjacent battery packs, and one end, close to the cross beam, of the side plate in the first direction is hermetically connected with the bottom plate and the two battery packs respectively; a glue accommodating space is defined by the at least one side plate, the plurality of battery packs, the bottom plate and the cross beam; the first glue layer is filled in the glue containing space and is in sealing connection with the side, facing the cross beam, of the side plate, the side, facing the cross beam, of the battery pack, the cross beam and the bottom plate. According to the battery pack, the ends, close to the cross beams, of the side plates are in sealed connection with the ends, close to the cross beams, of the two adjacent battery packs respectively, so that the first adhesive layers can be prevented from entering the space between the two adjacent battery packs, insulating films of the battery monomers are prevented from being punctured, and the safety of the battery pack is effectively improved.

Description

Technical Field

[0001] This application belongs to the field of battery technology, specifically relating to a battery pack and an electrical device. Background Technology

[0002] A battery pack typically contains multiple battery cells stacked together, secured by multiple insulating plates to form a battery assembly, thus maintaining the stability of the individual cells within the pack. Further sealing is achieved through a potting compound process. However, due to gaps between the battery cells, potting compound leakage is prone to occur during the filling process, affecting not only the pack's sealing performance but also potentially posing a safety threat to the individual battery cells. Utility Model Content

[0003] The purpose of this utility model is to provide a battery pack that solves the problem of leakage of the potting compound during the filling process of existing battery packs; another purpose of this application is to provide an electrical device.

[0004] Technical solution: A battery pack according to an embodiment of this application has a vertical first direction and a second direction, including:

[0005] The housing includes a base plate and a crossbeam, the base plate being connected to the crossbeam to form a receiving cavity;

[0006] Multiple battery packs are arranged in the receiving cavity along the second direction; along the first direction, the battery packs are spaced apart from the crossbeam.

[0007] At least one side plate, each side plate being disposed between two adjacent battery packs, and along the first direction, the end of the side plate near the crossbeam being sealed to the bottom plate and the two battery packs adjacent to the side plate, respectively; an adhesive space is formed between at least one side plate, multiple battery packs, the bottom plate, and the crossbeam;

[0008] The first adhesive layer fills the adhesive space and is sealed to the side of the side plate facing the crossbeam, the side of the battery pack facing the crossbeam, the crossbeam, and the bottom plate, respectively.

[0009] In some embodiments, the side panel includes:

[0010] The plate is disposed between two adjacent battery packs and is sealed to the two adjacent battery packs and the first adhesive layer respectively;

[0011] Multiple first adhesive-blocking structures are spaced apart along the first direction and connected to the plate body respectively; wherein two first adhesive-blocking structures are respectively disposed at both ends of the plate body along the first direction and are respectively sealed to two adjacent battery packs, the base plate and the first adhesive layer.

[0012] In some embodiments, the battery pack has a third direction perpendicular to the first direction and the second direction, respectively, and along the third direction, the size of the first adhesive barrier structure is larger than the size of the first adhesive layer.

[0013] In some embodiments,

[0014] Two adjacent battery packs include a first battery pack and a second battery pack, and the plate is located between the first battery pack and the second battery pack;

[0015] The first adhesive-blocking structure includes:

[0016] The first sealing element is disposed between the plate and the first battery pack, and is sealed to the first adhesive layer, the base plate, the plate and the first battery pack respectively;

[0017] The second sealing element is disposed between the plate and the second battery pack, and is sealed to the first adhesive layer, the base plate, the plate and the second battery pack respectively;

[0018] Along the third direction, the dimensions of both the first seal and the second seal are larger than the dimensions of the plate; along the third direction, the portion of the first seal extending beyond the plate is sealed to the portion of the second seal extending beyond the plate.

[0019] In some embodiments,

[0020] The side plate also includes:

[0021] The second adhesive blocking structure is disposed on the side of the plate facing the first battery pack and is sealed to the plate and the first battery pack; along the first direction, the second adhesive blocking structure is disposed between the first sealing members of two adjacent first adhesive blocking structures, and the second adhesive blocking structure, the two adjacent first sealing members and the plate form a first adhesive storage cavity.

[0022] The third adhesive blocking structure is disposed on the side of the plate facing the second battery pack and is sealed to the plate and the second battery pack. Along the first direction, the third adhesive blocking structure is disposed between the second sealing members of two adjacent first adhesive blocking structures. The third adhesive blocking structure, the two adjacent second sealing members and the plate form a second adhesive storage cavity.

[0023] The battery pack also includes:

[0024] The second adhesive layer is disposed in the first adhesive storage cavity and is connected to the plate and the first battery pack respectively;

[0025] The third adhesive layer is disposed in the second adhesive storage cavity and is connected to the plate and the second battery pack respectively.

[0026] In some embodiments,

[0027] The second adhesive-blocking structure includes a third sealing element and a fourth sealing element spaced apart along the third direction. Both the third and fourth sealing elements are located on the side of the plate facing the first battery pack and are respectively sealed to the plate and the first battery pack. The third sealing element, the fourth sealing element, two adjacent first sealing elements, and the plate form the first adhesive storage cavity; and / or,

[0028] The third adhesive barrier structure includes a fifth seal and a sixth seal spaced apart along the third direction. The fifth seal and the sixth seal are both located on the side of the plate facing the second battery pack and are respectively sealed to the side plate and the second battery pack. The fifth seal, the sixth seal, the two second seals and the plate form the second adhesive storage cavity.

[0029] In some embodiments, the first seal, the second seal, the third seal, the fourth seal, the fifth seal, and the sixth seal are all elastic members. The first seal, the third seal, and the fourth seal are adhesively connected to the plate and the first battery pack, and the second seal, the fifth seal, and the sixth seal are adhesively connected to the plate and the second battery pack.

[0030] In some embodiments,

[0031] Along the first direction,

[0032] The third sealing element is spaced apart from the two adjacent first sealing elements to form a first exhaust port;

[0033] The fourth sealing element is spaced apart from the two adjacent first sealing elements to form a second vent.

[0034] The fifth sealing element is spaced apart from the two adjacent second sealing elements to form a third exhaust port;

[0035] The sixth sealing element is spaced apart from the two adjacent second sealing elements to form a fourth exhaust port;

[0036] The first exhaust port and the second exhaust port are connected to the first glue storage cavity, and the third exhaust port and the fourth exhaust port are connected to the second glue storage cavity.

[0037] In some embodiments, the side panel further includes:

[0038] The first limiting member is at least partially disposed in the first glue storage cavity and connected to the plate body; along the second direction, the dimensions of the first sealing member, the third sealing member, and the fourth sealing member are all larger than the dimension of the first limiting member;

[0039] The second limiting member is at least partially disposed within the second glue storage cavity and connected to the plate body; along the second direction, the dimensions of the second sealing member, the fifth sealing member, and the sixth sealing member are all larger than the dimension of the second limiting member.

[0040] Accordingly, the electrical device described in this application includes a battery pack as described in any of the foregoing embodiments.

[0041] Beneficial effects: Compared with the prior art, a battery pack according to an embodiment of this application has a vertical first direction and a second direction, including a housing, multiple battery packs, at least one side plate and a first adhesive layer. The housing includes a bottom plate and a crossbeam, with the bottom plate connected to the crossbeam to form a receiving cavity. Multiple battery packs are arranged in the receiving cavity along the second direction. Along the first direction, the battery packs and the crossbeam are spaced apart, and each battery pack includes multiple battery cells arranged along the first direction. Each side plate is disposed between two adjacent battery packs, and along the first direction, the end of the side plate near the crossbeam is sealed to the bottom plate and two battery packs respectively. An adhesive space is formed between at least one side plate, multiple battery packs, the bottom plate and the crossbeam. The first adhesive layer fills the adhesive space and is sealed to the side of the side plate facing the crossbeam, the side of the battery pack facing the crossbeam, the crossbeam and the bottom plate respectively. This application provides a side plate between two adjacent battery packs, with one end of the side plate near the crossbeam sealingly connected to the ends of the two adjacent battery packs near the crossbeam. This prevents the first adhesive layer located in the adhesive space from entering between the two adjacent battery packs, ensuring the battery pack's airtightness and preventing the first adhesive layer from overflowing between the two adjacent battery packs and puncturing the insulating film of the individual battery cells, thereby effectively improving the safety of the battery pack.

[0042] Compared with the prior art, an electrical device according to an embodiment of this application includes a battery pack as described in any of the foregoing embodiments. It is understood that the electrical device of this application includes all the technical features and effects of the aforementioned battery pack, which will not be repeated here. Attached Figure Description

[0043] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0044] Figure 1 This is a schematic diagram of the overall structure of a battery pack according to an embodiment of this application;

[0045] Figure 2 This is a partial top view of a battery pack according to an embodiment of this application;

[0046] Figure 3 This is a cross-sectional view of a battery pack according to an embodiment of this application;

[0047] Figure 4 yes Figure 3 Enlarged view of section C;

[0048] Figure 5 This is a schematic diagram of the connection between two adjacent battery packs and a side plate according to an embodiment of this application;

[0049] Figure 6 yes Figure 5 Side view;

[0050] Figure 7 yes Figure 6 Enlarged view of section A;

[0051] Figure 8 yes Figure 5 A sectional view along section line AA;

[0052] Figure 9 yes Figure 8 Enlarged view of section B;

[0053] Figure 10 This is a schematic diagram of the structure of the side panel where the second adhesive barrier structure is located, according to an embodiment of this application.

[0054] Figure 11 This is a schematic diagram of the structure of the side panel where the third adhesive barrier structure is located, according to an embodiment of this application.

[0055] Figure 12 yes Figure 10 The front view;

[0056] Figure 13 This is a schematic diagram of the connection between the plate and the third sealing element in an embodiment of this application.

[0057] Explanation of reference numerals in the attached drawings: 100, casing; 110, receiving cavity; 120, bottom plate; 130, crossbeam; 140, adhesive space; 200, battery pack; 210, individual battery cell; 220, first battery pack; 230, second battery pack; 300, side plate; 310, plate; 320, first adhesive barrier structure; 321, first seal; 322, second seal; 330, second adhesive barrier structure; 331, third seal; 332, fourth seal; 340. First adhesive storage chamber; 350, Third adhesive blocking structure; 351, Fifth sealing element; 352, Sixth sealing element; 360, Second adhesive storage chamber; 381, First vent; 382, ​​Second vent; 383, Third vent; 384, Fourth vent; 391, First limiting element; 392, Second limiting element; 393, Adhesive layer; 400, Second adhesive layer; 500, Third adhesive layer; 600, First adhesive layer; X, First direction; Y, Second direction; Z, Third direction. Detailed Implementation

[0058] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0059] In the description of this application, it should be understood that the terms "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not 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 on this application. 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, features defined with "first" and "second" may explicitly or implicitly include one or more features. In the description of this application, "multiple" means two or more, and "at least one" can mean one, two, or more, unless otherwise explicitly specified. In the description of this application, "perpendicular" means completely perpendicular to 90° or almost completely perpendicular, for example, the range of included angles from 80° to 100° is considered perpendicular. Similarly, "parallel" means completely parallel or almost completely parallel, for example, the range of completely parallel angles from 10° is considered parallel.

[0060] It should also be noted that in the accompanying drawings of this application, arrows labeled X indicate the first direction X, arrows labeled Y indicate the second direction Y, and arrows labeled Z indicate the third direction Z. The introduction of the first direction X, the second direction Y, and the third direction Z is to facilitate the description of the structural positional relationships of the battery pack, thereby aiding in understanding its structure. In the embodiments of this application, the first direction X is the arrangement direction of the multiple battery cells 210, the second direction Y is the arrangement direction of the multiple battery packs 200, and the third direction Z is the height direction of the battery cell 210; furthermore, the first direction X, the second direction Y, and the third direction Z are mutually perpendicular.

[0061] In the field of power batteries, with the booming development of the electric vehicle market, the requirements for the design, manufacturing, and safety of battery packs are increasing. As one of the core components of electric vehicles, the design and structure of the battery pack directly affect the performance, driving range, and safety of the electric vehicle. In current battery pack technology, the cell-battery pack-battery pack model has become the mainstream. This model combines multiple cells to form a battery pack, and then further integrates the battery pack into the battery pack to achieve higher energy density and better thermal management performance.

[0062] In the specific composition of a battery pack, key components such as battery cells (individual cells), epoxy boards, U-shaped frames, insulating end plates, casing, and structural adhesives play crucial roles. As energy storage units, the performance and safety of the battery cells directly determine the overall performance of the battery pack. The epoxy boards, used to connect multiple rows of cells and ensure stability, have a height less than the cell height, resulting in gaps at the bottom, which presents a challenge for the subsequent potting process.

[0063] During battery pack manufacturing, structural adhesives are used to bond multiple rows of battery cells to epoxy boards to ensure the stability and safety of the battery packs. However, gaps exist between the casing and the battery cells, providing space for subsequent potting compounding. Potting compounding, as a commonly used sealing and fixing method, plays a crucial role in battery pack manufacturing. However, due to the gaps between the cells, potting compound leakage is prone to occur during the filling process. This not only affects the sealing performance of the battery pack but may also pose a potential threat to battery safety.

[0064] In view of this, embodiments of this application provide a battery pack designed to solve the aforementioned problems.

[0065] Please refer to the following: Figure 1 , Figure 2 , Figure 3 and Figure 4This application provides a battery pack having a vertical first direction X and a second direction Y, and including a housing 100, a plurality of battery packs 200, at least one side plate 300, and a first adhesive layer 600. The housing 100 includes a bottom plate 120 and a crossbeam 130, the bottom plate 120 and the crossbeam 130 being connected to form a receiving cavity 110. The plurality of battery packs 200 are arranged along the second direction Y within the receiving cavity 110. Along the first direction X, the battery packs 200 are spaced apart from the crossbeam 130, and the battery packs 200 include a plurality of battery cells 2 arranged along the first direction X. 10; Each side plate 300 is disposed between two adjacent battery packs 200. Along the first direction X, the end of the side plate 300 near the crossbeam 130 is respectively sealed to the bottom plate 120 and the two battery packs 200 adjacent to the side plate 300; At least one side plate 300, multiple battery packs 200, the bottom plate 120 and the crossbeam 130 form an adhesive space 140; The first adhesive layer 600 fills the adhesive space 140 and is respectively sealed to the side of the side plate 300 facing the crossbeam 130, the side of the battery pack 200 facing the crossbeam 130, the crossbeam 130 and the bottom plate 120.

[0066] In this embodiment, by providing a side plate 300 between two adjacent battery packs 200, and sealing the end of the side plate 300 near the crossbeam 130 with the ends of the two adjacent battery packs 200 near the crossbeam 130 respectively, the first adhesive layer 600 located in the adhesive space 140 can be prevented from entering between the two adjacent battery packs 200. This ensures the sealing of the battery pack and also prevents the first adhesive layer 600 from overflowing between the two adjacent battery packs 200 and puncturing the insulating film of the battery cell 210, thereby effectively improving the safety of the battery pack.

[0067] Specifically, the crossbeam 130 and the base plate 120 are used to form a receiving cavity 110 for accommodating the battery pack 200. The battery pack 200 is placed in the receiving cavity 110. However, due to considerations such as assembly clearance and fixing of the battery pack 200, a certain space is usually required between the crossbeam 130 and the battery pack 200 to complete the insertion of the battery pack 200 into the box and subsequent potting and sealing. The cavity 110 typically houses multiple battery packs 200. Adjacent battery packs 200 are connected and fixed by side plates 300 (usually by adhesive bonding). The side plate 300 near the crossbeam 130, the side of the battery pack 200 near the crossbeam 130, the crossbeam 130, and the base plate 120 together form an adhesive space 140. The first adhesive layer 600 is filled in the adhesive space 140, which on the one hand realizes the fixed connection between the battery pack 200 and the crossbeam 130 and the base plate 120, and on the other hand seals and fills the adhesive space 140 to ensure the sealing performance of the cavity 110. By setting a side plate 300 between two adjacent battery packs 200, and sealing the end of the side plate 300 near the crossbeam 130 with the end of the battery pack 200 near the crossbeam 130, the first adhesive layer 600 can be prevented from overflowing between the two adjacent battery packs 200, thereby reducing the risk of the insulating film of the battery cell 210 being punctured, and thus also improving the safety of the battery pack.

[0068] It should be noted that the first adhesive layer 600 of this application can be a potting compound, which is initially in a fluid state, making it easy to pour into the potting compound space 140 until it overflows. Through the solidification of the potting compound, the adhesive bonding between the first adhesive layer 600 and the crossbeam 130, the base plate 120, the battery pack 200 and the side plate 300 is achieved. At the same time, the potting compound has a high density, which can achieve the sealing of the inside of the battery pack.

[0069] It should also be noted that the sealing connection in this application generally refers to a technology or method used to ensure a tight, leak-free connection between two or more components. Specifically, it can be achieved by using sealing elements, such as sealing rings, gaskets, sealant, etc., to fill the gaps at the connection points and prevent fluids (including gases and liquids) from leaking at the connection interface. In the embodiments of this application, the sealing connection can be achieved by using sealant to bond two adjacent components. For example, the sealing connection between the side plate 300 and the battery pack 200 can be achieved by bonding the side plate 300 to the battery pack 200 with sealant. The first adhesive layer 600 is respectively sealed to the side of the side plate 300 facing the crossbeam 130, the side of the battery pack 200 facing the crossbeam 130, the crossbeam 130, and the base plate 120. In practice, the first adhesive layer 600 can be directly and tightly bonded to the side of the side plate 300 facing the crossbeam 130, the side of the battery pack 200 facing the crossbeam 130, the crossbeam 130, and the base plate 120 during the solidification process, thereby ensuring a sealing connection.

[0070] In some embodiments, the side panel 300 includes a panel 310 and a plurality of first adhesive blocking structures 320. The panel 310 is disposed between two adjacent battery packs 200 and is sealed to the two adjacent battery packs 200 and the first adhesive layer 600, respectively. The plurality of first adhesive blocking structures 320 are spaced apart along the first direction X and are respectively connected to the panel 310. Two of the first adhesive blocking structures 320 are respectively disposed at both ends of the panel 310 along the first direction X and are sealed to the two adjacent battery packs 200, the bottom plate 120 and the first adhesive layer 600, respectively.

[0071] In this embodiment, the plate 310 is used to connect with the battery pack 200 to fix multiple battery cells 210 of the battery pack 200. Two first adhesive blocking structures 320 are disposed at both ends of the side plate 300 along the first direction X. At this time, the first adhesive blocking structure 320 at the end is sealed to one end of the battery pack 200 along the first direction X, and at the same time, the first adhesive blocking structure 320 is sealed to the bottom plate 120. This can achieve sealing of the end of the adjacent battery pack 200 near the crossbeam 130, thereby preventing the first adhesive layer 600 from overflowing into the gap between the two adjacent battery packs 200 during the solidification process. This can prevent burrs formed by the first adhesive layer 600 during solidification from piercing the insulating film of the battery cell 210, thereby improving the safety of the battery pack.

[0072] It should be noted that the first adhesive barrier structure 320 is in the receiving cavity 110 and is sealed to the two adjacent battery packs 200 and the base plate 120 respectively, thereby facilitating the formation of a sol space with the crossbeam 130 and the base plate 120. The first adhesive layer 600 can initially be a fluid potting compound, which solidifies in the sol space to achieve a sealed connection with the crossbeam 130, the base plate 120, the battery pack 200 and the side plate 300.

[0073] In some embodiments, the battery pack has a third direction Z that is perpendicular to the first direction X and the second direction Y respectively, and along the third direction Z, the size of the first adhesive barrier structure 320 is larger than the size of the first adhesive layer 600.

[0074] In this embodiment, by setting the size of the first adhesive barrier structure 320 to be larger than the size of the first adhesive layer 600, the first adhesive layer 600 can be prevented from overflowing the first adhesive barrier structure 320 and entering the gap between two adjacent battery packs 200. This prevents burrs formed when the first adhesive layer 600 solidifies from piercing the insulating film of the battery cell 210, thereby improving the safety of the battery cell 210 and thus improving the safety of the battery pack.

[0075] In this embodiment, the two ends of the first adhesive-blocking structure 320 along the third direction Z are flush with or extend beyond the top and bottom surfaces of the battery cell 210, respectively, thereby achieving a better adhesive-blocking effect. Preferably, the first adhesive-blocking structure 320 is a flexible sealant to minimize space occupation.

[0076] Furthermore, the first sealing structure 320 can be a sealing strip or sealing foam, which is sealed to the side of the plate 310 and the battery cell 210 by adhesive bonding. At this time, the first sealing structure 320 can be squeezed and deformed, which helps to ensure the sealing performance of the ends of the adjacent battery pack 200.

[0077] Please refer to the following: Figure 5 , Figure 6 and Figure 7 In some embodiments, two adjacent battery packs 200 include a first battery pack 220 and a second battery pack 230, and the plate 310 is located between the first battery pack 220 and the second battery pack 230; the first sealing structure 320 includes a first sealing member 321 and a second sealing member 322. The first sealing member 321 is disposed between the plate 310 and the first battery pack 220, and is sealed to the first adhesive layer 600, the base plate 120, the plate 310, and the first battery pack 220 respectively; the second sealing member 322 is disposed between the plate 310 and the second battery pack 230, and is sealed to the first adhesive layer 600, the base plate 120, the plate 310, and the second battery pack 230 respectively; wherein, along the third direction Z, the size of the first sealing member 321 and the size of the second sealing member 322 are both larger than the size of the plate 310; along the third direction Z, the portion of the first sealing member 321 extending beyond the plate 310 is sealed to the portion of the second sealing member 322 extending beyond the plate 310.

[0078] In this embodiment, the first sealing structure 320 includes a first sealing member 321 and a second sealing member 322. The first sealing member 321 and the second sealing member 322 are disposed opposite to each other on both sides of the plate 310 to fill the space between the plate 310 and the side of the battery cell 210 of the battery pack 200, forming a sealed connection between the side plate 300 and the first battery pack 220 and the second battery pack 230 on both sides.

[0079] In this embodiment, along the third direction Z, the dimensions of the first seal 321 and the second seal 322 are both larger than the dimensions of the plate 310. At this time, the dimension of the plate 310 along the third direction Z is smaller than the dimension of the side of the individual cell along the third direction Z. This can achieve both the connection and fixation of multiple individual cells 210 in the battery pack 200 and the reduction of the battery pack weight. At the same time, the two ends of the first seal 321 and the second seal 322 along the third direction Z extend beyond the two sides of the plate 310 along the third direction Z. At this time, the portions of the first seal 321 and the second seal 322 extending beyond the plate 310 can be used to fill the space between two adjacent battery packs 200, thereby achieving a sealed connection between the two ends of the two adjacent battery packs 200 along the third direction Z.

[0080] It should be noted that the first sealing element 321 and the second sealing element 322 in this embodiment can be sealing foam, which has a certain deformation capacity. In this case, after the two ends extending beyond the two sides of the plate 310 are bonded, the compressive force they are subjected to is relatively less than the compressive force of the part bonded to the plate 310. Therefore, the two ends of the first sealing element 321 and the second sealing element 322 still seal and connect the two adjacent battery packs 200, and seal and fill the space between the two adjacent battery packs 200, thereby achieving a seal between the two adjacent battery packs 200 and preventing the first adhesive layer 600 from overflowing between the two adjacent battery packs 200.

[0081] Please refer to the following: Figure 8 , Figure 9 , Figure 10 and Figure 11 In some embodiments, the side plate 300 further includes a second adhesive blocking structure 330 and a third adhesive blocking structure 350. The second adhesive blocking structure 330 is disposed on the side of the plate 310 facing the first battery pack 220 and is sealed to the plate 310 and the first battery pack 220. Along the first direction X, the second adhesive blocking structure 330 is disposed between the first sealing members 321 of two adjacent first adhesive blocking structures 320, and the second adhesive blocking structure 330, the two adjacent first sealing members 321, and the plate 310 form a first adhesive storage cavity 340. The third adhesive blocking structure 350 is disposed on the side of the plate 310 facing the second battery pack 230 and is sealed to the plate 310 and the second battery pack 230. Along the first direction X, the third adhesive blocking structure 350 is disposed between the second sealing members 322 of two adjacent first adhesive blocking structures 320, and the third adhesive blocking structure 350, the two adjacent second sealing members 322, and the plate 310 form a second adhesive storage cavity 360. The battery pack also includes a second adhesive layer 400 and a third adhesive layer 500. The second adhesive layer 400 is disposed in the first adhesive storage cavity 340 and is connected to the plate 310 and the first battery pack 220 respectively. The third adhesive layer 500 is disposed in the second adhesive storage cavity 360 and is connected to the plate 310 and the second battery pack 230 respectively.

[0082] In this embodiment, the second adhesive-blocking structure 330, together with two adjacent first adhesive-blocking structures 320 and the plate 310, forms a first adhesive storage cavity 340. The first adhesive storage cavity 340 is used to accommodate the second adhesive layer 400 to bond the plate 310 and the first battery pack 220, thereby achieving an effective connection and fixation between the first battery pack 220 and the side plate 300. The third adhesive-blocking structure 350, together with two adjacent first adhesive-blocking structures 320 and the plate 310, forms a second adhesive storage cavity 360. The second adhesive storage cavity 360 is used to accommodate the second adhesive layer 400 to bond the plate 310 and the second battery pack 230, thereby achieving an effective connection and fixation between the first battery pack 220 and the side plate 300. This structure not only prevents the second adhesive layer 400 and the third adhesive layer 500 from overflowing excessively, but also ensures the effective connection and fixation between the side plate 300 and the battery pack 200.

[0083] Please refer to the following: Figure 10 and Figure 11 In some embodiments, the second adhesive-blocking structure 330 includes a third sealing member 331 and a fourth sealing member 332 spaced apart along a third direction Z. The third sealing member 331 and the fourth sealing member 332 are both disposed on the side of the plate 310 facing the first battery pack 220 and are respectively sealed to the plate 310 and the first battery pack 220. The third sealing member 331, the fourth sealing member 332, two adjacent first sealing members 321 and the plate 310 form a first adhesive storage cavity 340. And / or, the third adhesive-blocking structure 350 includes a fifth sealing member 351 and a sixth sealing member 352 spaced apart along a third direction Z. The fifth sealing member 351 and the sixth sealing member 352 are both disposed on the side of the plate 310 facing the second battery pack 230 and are respectively sealed to the side plate 300 and the second battery pack 230. The fifth sealing member 351, the sixth sealing member 352, the two second sealing members 322 and the plate 310 form a second adhesive storage cavity 360.

[0084] In this embodiment, the third seal 331 and the fourth seal 332 are respectively attached to the two ends of the side plate 300 facing the first battery pack 220 along the third direction Z, so that they can form a five-sided closed first glue storage cavity 340 with the two adjacent first seals 321 and the side plate 300. The fifth seal 351 and the sixth seal 352 are respectively attached to the two ends of the side plate 300 facing the second battery pack 230 along the third direction Z, so that they can form a five-sided closed second glue storage cavity 360 with the second seal 322 and the side plate 300, which can accommodate a sufficient glue layer to connect with the corresponding battery pack 200.

[0085] It should be noted that the second adhesive layer 400 and the third adhesive layer 500 of this application can be structural adhesives with good adhesion.

[0086] In some embodiments, the first seal 321, the second seal 322, the third seal 331, the fourth seal 332, the fifth seal 351, and the sixth seal 352 are all elastic members. The first seal 321, the third seal 331, and the fourth seal 332 are adhesively connected to the plate 310 and the first battery pack 220, and the second seal 322, the fifth seal 351, and the sixth seal 352 are adhesively connected to the plate 310 and the second battery pack 230.

[0087] In this embodiment, the first seal 321, the second seal 322, the third seal 331, the fourth seal 332, the fifth seal 351, and the sixth seal 352 are all elastic members. When two adjacent battery packs 200 are pressed against each other, each seal is deformed accordingly, thereby enabling each seal to achieve a good sealing connection with the battery pack 200. At the same time, the second adhesive layer 400 overflows from the first adhesive storage cavity 340 and is fixedly connected to the first battery pack 220, and the third adhesive layer 500 overflows from the second adhesive storage cavity 360 and is fixedly connected to the second battery pack 230.

[0088] like Figure 13 As shown, adhesive layers 393 are respectively provided on both sides of the third seal 331. One of the adhesive layers 393 on both sides is used to adhesively connect the third seal 331 to the plate, and the other of the adhesive layers 393 on both sides is used to adhesively connect the third seal 331 to the side wall of the first battery pack 220. Other seals have similar structures.

[0089] Please refer to the following: Figure 10 , Figure 11 and Figure 12 In some embodiments, along the first direction X, the third seal 331 is spaced apart from two adjacent first seals 321 to form a first vent 381; the fourth seal 332 is spaced apart from two adjacent first seals 321 to form a second vent 382; the fifth seal 351 is spaced apart from two adjacent second seals 322 to form a third vent 383; and the sixth seal 352 is spaced apart from two adjacent second seals 322 to form a fourth vent 384. The first vent 381 and the second vent 382 are connected to the first glue storage cavity 340, and the third vent 383 and the fourth vent 384 are connected to the second glue storage cavity 360.

[0090] In this embodiment, by providing a first vent 381 and a second vent 382, ​​when the side plate 300 is connected to the first battery pack 220, the gas in the first glue storage cavity 340 can be smoothly discharged when the second adhesive layer 400, the first seal 321, the third seal 331, and the fourth seal 332 are compressed, thereby achieving a good fixed connection between the side plate 300 and the first battery pack 220. By providing a third vent 383 and a fourth vent 384, when the side plate 300 is connected to the second battery pack 230, the gas in the second glue storage cavity 360 can be smoothly discharged when the third adhesive layer 500, the second seal 322, the fifth seal 351, and the sixth seal 352 are compressed, thereby achieving a good fixed connection between the side plate 300 and the second battery pack 230.

[0091] Please refer to the following: Figure 9 , Figure 10 , Figure 11 and Figure 12 In some embodiments, the side plate 300 further includes a first limiting member 391 and a second limiting member 392. The first limiting member 391 is at least partially disposed in the first glue storage cavity 340 and connected to the plate body 310. Along the second direction Y, the dimensions of the first sealing member 321, the third sealing member 331, and the fourth sealing member 332 are all larger than the dimension of the first limiting member 391. The second limiting member 392 is at least partially disposed in the second glue storage cavity 360 and connected to the plate body 310. Along the second direction Y, the dimensions of the second sealing member 322, the fifth sealing member 351, and the sixth sealing member 352 are all larger than the dimension of the second limiting member 392.

[0092] In this embodiment, since the first seal 321, the second seal 322, the third seal 331, the fourth seal 332, the fifth seal 351, and the sixth seal 352 are all elastic elements, they can undergo large deformation when squeezed. Therefore, this application provides a first limiting member 391 in the first glue storage cavity 340 and a second limiting member 392 in the second glue storage cavity 360. At this time, when the side plate 300 is squeezed against the two adjacent battery packs 200 to achieve adhesive bonding between the side plate 300 and the battery pack 200, the second adhesive layer 400 and the third adhesive layer 500 are prevented from overflowing excessively, ensuring the thickness of the adhesive layer between the battery pack 200 and the side plate 300, thereby ensuring the bonding effect between the side plate 300 and the adjacent battery pack 200.

[0093] Accordingly, an electrical device according to an embodiment of this application includes a battery pack as described in any of the foregoing embodiments, the battery pack being used to supply power to the electrical device.

[0094] In the embodiments of this application, the power-consuming device includes the aforementioned battery pack, wherein the aforementioned battery pack is used to supply power to the power-consuming device. Therefore, the power-consuming device includes all the technical features and technical effects of the aforementioned battery pack.

[0095] Of course, the electrical devices referred to in this application can be vehicles, mobile phones, portable devices, laptops, ships, spacecraft, electric toys, and power tools, etc. Vehicles can be new energy vehicles, including pure electric vehicles, hybrid electric vehicles, or range-extended electric vehicles; spacecraft include airplanes, rockets, space shuttles, and spacecraft; electric toys include stationary or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys; 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. This application does not impose any special limitations on the above-mentioned electrical devices.

[0096] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0097] The battery pack and power device provided in the embodiments of this application have been described in detail above, and specific examples have been used to illustrate the principles and implementation methods of this application. The description of the above embodiments is only for the purpose of helping to understand the technical solutions and core ideas of this application. Those skilled in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or make equivalent substitutions for some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A battery pack, characterized in that, Having a vertical first direction and a vertical second direction, including: The housing includes a base plate and a crossbeam, the base plate being connected to the crossbeam to form a receiving cavity; Multiple battery packs are arranged in the receiving cavity along the second direction; along the first direction, the battery packs are spaced apart from the crossbeam. At least one side plate, each side plate being disposed between two adjacent battery packs, and along the first direction, the end of the side plate near the crossbeam being sealed to the bottom plate and the two battery packs adjacent to the side plate, respectively; an adhesive space is formed between at least one side plate, multiple battery packs, the bottom plate, and the crossbeam; The first adhesive layer fills the adhesive space and is sealed to the side of the side plate facing the crossbeam, the side of the battery pack facing the crossbeam, the crossbeam, and the bottom plate, respectively.

2. The battery pack according to claim 1, characterized in that, The side plate includes: The plate is disposed between two adjacent battery packs and is sealed to the two adjacent battery packs and the first adhesive layer respectively; Multiple first adhesive-blocking structures are spaced apart along the first direction and connected to the plate body respectively; wherein two first adhesive-blocking structures are respectively disposed at both ends of the plate body along the first direction and are respectively sealed to two adjacent battery packs, the base plate and the first adhesive layer.

3. The battery pack according to claim 2, characterized in that, The battery pack has a third direction that is perpendicular to the first direction and the second direction, respectively. Along the third direction, the size of the first adhesive barrier structure is larger than the size of the first adhesive layer.

4. The battery pack according to claim 3, characterized in that, Two adjacent battery packs include a first battery pack and a second battery pack, and the plate is located between the first battery pack and the second battery pack; The first adhesive-blocking structure includes: The first sealing element is disposed between the plate and the first battery pack, and is sealed to the first adhesive layer, the base plate, the plate and the first battery pack respectively; The second sealing element is disposed between the plate and the second battery pack, and is sealed to the first adhesive layer, the base plate, the plate and the second battery pack respectively; Along the third direction, the dimensions of both the first seal and the second seal are larger than the dimensions of the plate; along the third direction, the portion of the first seal extending beyond the plate is sealed to the portion of the second seal extending beyond the plate.

5. The battery pack according to claim 4, characterized in that, The side plate also includes: The second adhesive blocking structure is disposed on the side of the plate facing the first battery pack and is sealed to the plate and the first battery pack; along the first direction, the second adhesive blocking structure is disposed between the first sealing members of two adjacent first adhesive blocking structures, and the second adhesive blocking structure, the two adjacent first sealing members and the plate form a first adhesive storage cavity. The third adhesive blocking structure is disposed on the side of the plate facing the second battery pack and is sealed to the plate and the second battery pack. Along the first direction, the third adhesive blocking structure is disposed between the second sealing members of two adjacent first adhesive blocking structures. The third adhesive blocking structure, the two adjacent second sealing members and the plate form a second adhesive storage cavity. The battery pack also includes: The second adhesive layer is disposed in the first adhesive storage cavity and is connected to the plate and the first battery pack respectively; The third adhesive layer is disposed in the second adhesive storage cavity and is connected to the plate and the second battery pack respectively.

6. The battery pack according to claim 5, characterized in that, The second adhesive-blocking structure includes a third sealing element and a fourth sealing element spaced apart along the third direction. Both the third and fourth sealing elements are located on the side of the plate facing the first battery pack and are respectively sealed to the plate and the first battery pack. The third sealing element, the fourth sealing element, two adjacent first sealing elements, and the plate form the first adhesive storage cavity; and / or, The third adhesive barrier structure includes a fifth seal and a sixth seal spaced apart along the third direction. The fifth seal and the sixth seal are both located on the side of the plate facing the second battery pack and are respectively sealed to the side plate and the second battery pack. The fifth seal, the sixth seal, the two second seals and the plate form the second adhesive storage cavity.

7. The battery pack according to claim 6, characterized in that, The first seal, the second seal, the third seal, the fourth seal, the fifth seal, and the sixth seal are all elastic elements. The first seal, the third seal, and the fourth seal are adhesively connected to the plate and the first battery pack. The second seal, the fifth seal, and the sixth seal are adhesively connected to the plate and the second battery pack.

8. The battery pack according to claim 7, characterized in that, Along the first direction; The third sealing element is spaced apart from the two adjacent first sealing elements to form a first exhaust port; The fourth sealing element is spaced apart from the two adjacent first sealing elements to form a second vent. The fifth sealing element is spaced apart from the two adjacent second sealing elements to form a third exhaust port; The sixth sealing element is spaced apart from the two adjacent second sealing elements to form a fourth exhaust port; The first exhaust port and the second exhaust port are connected to the first glue storage cavity, and the third exhaust port and the fourth exhaust port are connected to the second glue storage cavity.

9. The battery pack according to claim 8, characterized in that, The side plate also includes: The first limiting member is at least partially disposed in the first glue storage cavity and connected to the plate body; along the second direction, the dimensions of the first sealing member, the third sealing member, and the fourth sealing member are all larger than the dimension of the first limiting member; The second limiting member is at least partially disposed within the second glue storage cavity and connected to the plate body; along the second direction, the dimensions of the second sealing member, the fifth sealing member, and the sixth sealing member are all larger than the dimension of the second limiting member.

10. An electrical device, characterized in that, Includes the battery pack as described in any one of claims 1-9.

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