A battery pack and an electric device

Abstract

This application discloses a battery pack and an electrical device. The battery pack includes a cell assembly, a first housing, a second housing, a cover, and a first sealing element. The first housing and the second housing are joined along a first direction to form a receiving cavity. The cover seals the cavity opening. A mounting portion is provided on the side of the cover facing the receiving cavity. The first sealing element is surrounding the sealing surface of the mounting portion, with one side of the first sealing element abutting against the sealing surface and the other side abutting against the first and second housings. This application, by providing a mounting portion on the cover, connects the cover to the first and second housings, making the battery pack's connection structure more compact and reducing its volume. Simultaneously, by providing a sealing surface circumferentially on the mounting portion and surrounding the first sealing element on it, the sealing gap between the three components is sealed through the contact between the first sealing element and the sealing surface, the first housing, and the second housing. This sealing structure is simple and easy to assemble.

Description

Technical Field

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

[0002] A power battery consists of a battery casing, a cover, and battery cells. After the battery casing and cover are connected, there are often assembly gaps at the joints. Power batteries require good reliability during operation, and their operational reliability is closely related to the sealing performance of the power battery.

[0003] In related technologies, to protect the inside of the battery pack from dust or water, a seal is required at the assembly gap between the battery pack outer shell and the cover to improve the sealing effect. However, the sealing structure of the battery pack in these technologies is relatively complex, making it inconvenient to assemble the various components of the battery pack. Utility Model Content

[0004] This application aims to provide a battery pack and electrical device that can solve the problem that the sealing structure of the battery pack in the related technology is relatively complex, which makes it inconvenient to assemble the various components of the battery pack.

[0005] To solve the above-mentioned technical problems, this application is implemented as follows:

[0006] In a first aspect, embodiments of this application propose a battery pack, comprising: a battery cell assembly, a first housing, a second housing, a cover, and a first sealing element;

[0007] The battery has a first direction and a second direction that are perpendicular to each other. The first housing and the second housing are enclosed along the first direction to form a receiving cavity, and the battery cell assembly is disposed in the receiving cavity.

[0008] The receiving cavity has an opening on one side along the second direction, the cover seals the opening, and the cover has a mounting part on the side facing the receiving cavity, the mounting part extending into the receiving cavity;

[0009] The mounting part is provided with a sealing surface in the circumference. The first sealing member is arranged around the sealing surface. One side of the first sealing member abuts against the sealing surface, and the other side of the first sealing member abuts against the first housing and the second housing respectively, for sealing the gap between the cover and the first housing and the second housing.

[0010] Optionally, the battery pack further includes a second seal disposed between the first housing and the second housing, the second seal being used to seal the gap between the first housing and the second housing.

[0011] Optionally, the first housing includes a first main body and a first connecting portion circumferentially arranged around the first main body, the first main body having a first groove; the second housing includes a second main body and a second connecting portion circumferentially arranged around the second main body, the second main body having a second groove; the first main body and the second main body are connected along the first direction; the first groove and the second groove cooperate to form the receiving cavity; the first connecting portion is connected to the second connecting portion; and the second sealing member is disposed between the first connecting portion and the second connecting portion.

[0012] Optionally, the first sealing element has a first adhesive layer on the side facing the mounting portion, and the first adhesive layer is bonded and fixed to the sealing surface;

[0013] And / or, the first seal is provided with a second adhesive layer on the side opposite to the mounting portion, and the second adhesive layer is bonded and fixed to the first housing and the second housing.

[0014] Optionally, the battery pack further includes a potting compound; the receiving cavity includes a first chamber and a second chamber that are interconnected, the first chamber being located on the side of the second chamber near the cover, the battery cell assembly being disposed in the second chamber, and the potting compound filling the first chamber; the mounting portion is at least partially embedded in the potting compound to be connected to the first housing and the second housing respectively through the potting compound.

[0015] Optionally, the first housing is recessed at one end near the cover in the first direction toward a direction away from the second housing to form a first protrusion, and the second housing is recessed at one end near the cover in the first direction toward a direction away from the first housing to form a second protrusion, and the first protrusion and the second protrusion together form the first chamber.

[0016] Optionally, the battery pack further includes fasteners, the first connecting portion having a plurality of first connecting holes arranged at intervals along the circumference of the first connecting portion; the second connecting portion having a plurality of second connecting holes arranged at intervals along the circumference of the second connecting portion; each first connecting hole corresponds to one second connecting hole, and the fastener passes through the first connecting hole and connects to the second connecting hole.

[0017] Optionally, the first connecting part is provided with a plurality of first mounting holes, and the second connecting part is provided with a plurality of second mounting holes. Each first mounting hole communicates with a second mounting hole, and the first mounting hole and the second mounting hole are used for mounting and fixing the battery pack.

[0018] Optionally, the cover further includes a main body portion connected to the side of the mounting portion opposite to the receiving cavity, and the main body portion respectively abutting the end faces of the first housing and the second housing along the second direction.

[0019] Secondly, embodiments of this application provide an electrical device including the battery pack described in any of the above claims.

[0020] In the embodiments of this application, by connecting the first housing and the second housing along a first direction to form a cavity for placing the battery cell assembly, and by providing a mounting part on the side of the cover facing the cavity opening, the connection between the cover and the first and second housings can be achieved using the mounting part. This makes the battery pack structure more compact, reduces the volume of the battery pack, and thus reduces the space occupied by the battery pack. At the same time, by providing a sealing surface around the mounting part and wrapping the first sealing member around the sealing surface, so that one side of the first sealing member abuts against the sealing surface and the other side abuts against the first and second housings, the assembly gap between the mounting part and the first and second housings can be sealed. This sealing structure is simple, easy to assemble, and can improve the production efficiency of the battery pack.

[0021] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0022] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0023] Figure 1 This is a schematic diagram of the battery pack structure according to an embodiment of this application;

[0024] Figure 2 This is an exploded view of a battery pack according to an embodiment of this application;

[0025] Figure 3 This is a partial structural schematic diagram of a battery pack according to an embodiment of this application;

[0026] Figure 4 This is a cross-sectional view of a battery pack according to an embodiment of this application;

[0027] Figure 5 This is one of the partial cross-sectional views of a battery pack according to an embodiment of this application;

[0028] Figure 6 This is a schematic diagram of the structure of the first housing of the battery pack according to an embodiment of this application;

[0029] Figure 7This is a schematic diagram of the structure of the second housing of the battery pack according to an embodiment of this application;

[0030] Figure 8 This is a schematic diagram of the structure of the cover of the battery pack according to an embodiment of this application;

[0031] Figure 9 This is a second partial cross-sectional schematic diagram of a battery pack according to an embodiment of this application.

[0032] Figure label:

[0033] 10: Battery cell assembly; 20: First housing; 21: First main body; 211: First groove; 22: First connecting part; 221: First connecting hole; 222: First mounting hole; 23: First protrusion; 30: Second housing; 31: Second main body; 311: Second groove; 32: Second connecting part; 321: Second connecting hole; 322: Second mounting hole; 33: Second protrusion; 40: Cover; 41: Mounting part; 42: Sealing surface; 43: Main body; 50: First seal; 51: First adhesive layer; 52: Second adhesive layer; 60: Second seal; 70: Receiving cavity; 71: First chamber; 72: Second chamber; 73: Cavity opening; 80: Fastener; 90: Encapsulating colloid; 91: BMS; 92: Tab; X: First direction; Y: Second direction. Detailed Implementation

[0034] The embodiments of this application will now be described in detail. Examples of these embodiments are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0035] The terms "first" and "second" in the specification and claims of this application may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise stated, "multiple" means two or more. Furthermore, "and / or" in the specification and claims indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0036] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "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 based on the orientation or positional relationship 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 of this application.

[0037] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0038] The battery pack and electrical equipment provided in this application will be described in detail below with reference to the accompanying drawings, through specific embodiments and application scenarios. For example... Figures 1 to 3 As shown, a battery pack according to some embodiments of this application includes: a cell assembly 10, a first housing 20, a second housing 30, a cover 40, and a first sealing member 50; the battery has a first direction X and a second direction Y that are perpendicular to each other, the first housing 20 and the second housing 30 are enclosed along the first direction X to form a receiving cavity 70, and the cell assembly 10 is disposed in the receiving cavity 70; the receiving cavity 70 is provided with an opening 73 on one side along the second direction Y, the cover 40 is sealed at the opening 73, and the cover 40 is provided with a mounting part 41 on the side facing the receiving cavity 70, the mounting part 41 extends into the receiving cavity 70; the mounting part 41 is provided with a sealing surface 42 around its circumference, the first sealing member 50 is disposed around the sealing surface 42, one side of the first sealing member 50 abuts against the sealing surface 42, and the other side of the first sealing member 50 abuts against the first housing 20 and the second housing 30 respectively, for sealing the gap between the cover 40 and the first housing 20 and the second housing 30.

[0039] In the embodiments of this application, by connecting the first housing 20 and the second housing 30 along the first direction X to form a receiving cavity 70 for placing the battery cell assembly 10, and by providing a mounting part 41 on the side of the cover 40 facing the cavity opening 73 of the receiving cavity 70, the connection between the cover 40 and the first housing 20 and the second housing 30 can be achieved using the mounting part 41. This makes the battery pack structure more compact, reduces the volume of the battery pack, and thus reduces the space occupied by the battery pack. At the same time, by providing a sealing surface 42 around the mounting part 41, and wrapping the first sealing member 50 around the sealing surface 42, so that one side of the first sealing member 50 abuts against the sealing surface 42 and the other side abuts against the first housing 20 and the second housing 30, the assembly gap between the mounting part 41 and the first housing 20 and the second housing 30 can be sealed. This sealing structure is simple, easy to assemble, and can improve the production efficiency of the battery pack.

[0040] In some embodiments, the first sealing element 50 may be a sealing foam, and by providing adhesive layers on both sides of the sealing foam, the mounting part 41 is connected and fixed to the first housing 20 and the second housing 30 using the adhesive layers.

[0041] In other embodiments, the first sealant 50 can be a sealant. The sealant is applied to the sealing surface 42. The sealant not only effectively seals the gap between the mounting portion 41 and the first housing 20 and the second housing 30 to prevent external moisture, dust, and other impurities from entering the battery pack, but also directly connects the mounting portion 41 to the first housing 20 and the second housing 30. The sealant can be epoxy resin, silicone, or polyurethane, etc. The specific type of sealant can be flexibly selected according to actual needs, and this application does not limit its application.

[0042] In some embodiments, such as Figure 2 As shown, the battery pack also includes a second seal 60, which is disposed between the first housing 20 and the second housing 30, and is used to seal the gap between the first housing 20 and the second housing 30.

[0043] In this embodiment of the application, a second sealing member 60 is provided between the first housing 20 and the second housing 30 to seal the assembly gap between the first housing 20 and the second housing 30, thereby further improving the sealing performance of the battery pack and thus improving the operational reliability and safety of the battery pack.

[0044] It is understood that the second sealing element 60 can be sealing foam, with adhesive layers on both sides of the sealing foam, using the adhesive layers to connect and fix the sealing foam to the first housing 20 and the second housing 30; the second sealing element 60 can also be sealant, with the sealant applied to the connecting surface of the first housing 20 and the second housing 30. The sealant can be epoxy resin, silicone, or polyurethane, etc., and the specific type of sealant can be flexibly selected according to actual needs; this application embodiment does not limit its application.

[0045] In some embodiments, such as Figure 6 and Figure 7 As shown, the first housing 20 includes a first main body 21 and a first connecting portion 22 arranged circumferentially around the first main body 21. The first main body 21 has a first groove 211. The second housing 30 includes a second main body 31 and a second connecting portion 32 arranged circumferentially around the second main body 31. The second main body 31 has a second groove 311. The first main body 21 and the second main body 31 are connected along a first direction X. The first groove 211 and the second groove 311 cooperate to form a receiving cavity 70. The first connecting portion 22 is connected to the second connecting portion 32. The second sealing member 60 is disposed between the first connecting portion 22 and the second connecting portion 32.

[0046] In this embodiment, a first main body portion 21 and a first connecting portion 22 arranged circumferentially around the first main body portion 21 are provided in the first housing 20, and a second main body portion 31 and a second connecting portion 32 arranged circumferentially around the second main body portion 31 are provided in the second housing 30. The first groove 211 in the first main body portion 21 and the second groove 311 in the second main body portion 31 cooperate to form a receiving cavity 70 for accommodating the battery cell assembly 10. The connection between the first connecting portion 22 and the second connecting portion 32 is used to connect and fix the first housing 20 and the second housing 30. In this way, not only is it convenient to connect and assemble the first housing 20 and the second housing 30, but the connection strength between the first housing 20 and the second housing 30 is also enhanced, and the structural stability of the battery pack is improved.

[0047] In some embodiments, the first connecting part 22 and the second connecting part 32 can be fixed together by means of threaded connection, snap-fit ​​connection or welding. Of course, the connection method of the first connecting part 22 and the second connecting part 32 can be flexibly selected according to actual process requirements, and the embodiments of this application do not limit it.

[0048] In some embodiments, such as Figure 9 As shown, the first sealing element 50 has a first adhesive layer 51 on the side facing the mounting part 41, and the first adhesive layer 51 is bonded and fixed to the sealing surface 42.

[0049] In this embodiment, a first adhesive layer 51 is provided on the side of the first sealing element 50 facing the mounting part 41. The first adhesive layer 51 is used to bond and fix the first sealing element 50 to the sealing surface 42. This allows the first sealing element 50 to be fixed to the mounting part 41 first during assembly, and then the first sealing element 50 and the cover 40 are assembled together with the first housing 20 and the second housing 30. This avoids the first sealing element 50 from undergoing large displacement or even falling off during assembly, which would affect the sealing performance.

[0050] In some embodiments, such as Figure 9 As shown, the first sealing member 50 has a second adhesive layer 52 on the side opposite to the mounting part 41, and the second adhesive layer 52 is bonded and fixed to the first housing 20 and the second housing 30.

[0051] In this embodiment, a first adhesive layer 51 is provided on the side of the first sealing member 50 away from the mounting part 41. The first adhesive layer 51 is used to bond and fix the first sealing member 50 to the first housing 20 and the second housing 30. This allows the first sealing member 50 to be fixed to the first housing 20 and the second housing 30 firstly during assembly, and then the first sealing member 50, the first housing 20, and the second housing 30 are assembled together with the cover 40. This avoids the first sealing member 50 from undergoing large displacement or even falling off during assembly, which would affect the sealing performance.

[0052] Furthermore, such as Figure 9 As shown, the first sealing member 50 has a first adhesive layer 51 on the side facing the mounting part 41, and the first adhesive layer 51 is bonded and fixed to the sealing surface 42. At the same time, the first sealing member 50 has a second adhesive layer 52 on the side away from the mounting part 41, and the second adhesive layer 52 is bonded and fixed to the first housing 20 and the second housing 30.

[0053] In this embodiment of the application, by providing a first adhesive layer 51 on the side of the first sealing member 50 facing the mounting portion 41, and simultaneously providing a first adhesive layer 51 on the side of the first sealing member 50 away from the mounting portion 41, the first sealing member 50 is simultaneously bonded and fixed to the mounting portion 41, the first housing 20 and the second housing 30 using the first adhesive layer 51, thereby improving the efficiency of bonding and fixing.

[0054] Optionally, such as Figure 4 and Figure 5 As shown, the battery pack also includes a potting compound 90; the receiving cavity 70 includes a first chamber 71 and a second chamber 72 that are interconnected, the first chamber 71 is located on the side of the second chamber 72 near the cover 40, the battery cell assembly 10 is disposed in the second chamber 72, and the potting compound 90 is filled in the first chamber 71; the mounting part 41 is at least partially embedded in the potting compound 90 so as to be connected to the first housing 20 and the second housing 30 respectively through the potting compound 90.

[0055] In this embodiment, by providing potting compound 90 in the first chamber 71, the mounting part 41 is at least partially embedded in the potting compound 90, so that the potting compound 90 can be used to bond and fix the mounting part 41, the first housing 20 and the second housing 30, thereby achieving the connection and fixation between the cover 40 and the first housing 20 and the second housing 30. At the same time, the potting compound 90 filling the gap between the mounting part 41 and the first housing 20 and the second housing 30 can also play a sealing role.

[0056] In addition, by setting up a first chamber 71 and a second chamber 72 that are interconnected, the potting compound 90 is placed in the first chamber 71 and the battery cell assembly 10 is placed in the second chamber 72, so as to avoid the potting compound 90 covering the surface of the battery cell assembly 10. This not only avoids the potting compound 90 from affecting the heat dissipation of the battery cell assembly 10, but also limits the gas expansion of the battery cell assembly 10 during operation, which could lead to damage to the internal structure of the battery cell assembly 10.

[0057] Understandably, the battery pack includes a Battery Management System (BMS). The BMS 91 is located in the first chamber 71 and on the side of the cell assembly 10 facing the cover 40. The cell assembly 10 has tabs 92 on the side facing the cover 40. The tabs 92 are electrically connected to the circuit board in the BMS 91. The tabs 92 are embedded in the potting compound 90. The potting compound 90 can also fix the position of the tabs 92, thereby improving the reliability of the battery pack operation.

[0058] It should be noted that the potting compound 90 can be made of materials such as epoxy resin, polyurethane, or silicone. These materials have good insulation and sealing properties, which can effectively prevent external moisture, dust, and other impurities from entering the battery pack, thereby ensuring the battery pack's performance and safety.

[0059] In some embodiments, such as Figure 6 and Figure 7 As shown, the first housing 20 is recessed at one end near the cover 40 along the first direction X toward the direction away from the second housing 30 to form a first protrusion 23, and the second housing 30 is recessed at one end near the cover 40 along the first direction X toward the direction away from the first housing 20 to form a second protrusion 33. The first protrusion 23 and the second protrusion 33 together form a first chamber 71.

[0060] In this embodiment, by providing a first protrusion 23 on the first housing 20 and a second protrusion 33 on the second housing 30, the first protrusion 23 and the second protrusion 33 are used to enclose a first chamber 71 for accommodating the potting compound 90 along the first direction X. This increases the space of the first chamber 71 to fill with sufficient potting compound 90. At the same time, while ensuring the sealing and connection strength between the potting compound 90 and the mounting part 41 and the first housing 20 and the second housing 30, the space occupied by the potting compound 90 in the second direction Y of the battery pack is reduced.

[0061] In some embodiments, such as Figure 2 , Figure 6 and Figure 7 As shown, the battery pack also includes a fastener 80. The first connecting part 22 is provided with a plurality of first connecting holes 221, which are arranged at intervals along the circumference of the first connecting part 22. The second connecting part 32 is provided with a plurality of second connecting holes 321, which are arranged at intervals along the circumference of the second connecting part 32. Each first connecting hole 221 corresponds to a second connecting hole 321. The fastener 80 passes through the first connecting hole 221 and the second connecting hole 321. The first connecting part 22 is connected to the second connecting part 32 through the fastener 80.

[0062] In this embodiment of the application, by providing a first connecting hole 221 at a circumferential interval in the first connecting portion 22 and a second connecting hole 321 at a circumferential interval in the second connecting portion 32, and by having a fastener 80 pass through the first connecting hole 221 and the first connecting hole 221, the first connecting portion 22 and the second connecting portion 32 are connected and fixed by the fastener 80, which can further improve the stability and reliability of the connection between the first housing 20 and the second housing 30.

[0063] It should be noted that the fastener 80 can be bolts, screws, etc. The tightening operation can firmly connect the second housing 30 to the first housing 20, ensuring the structural stability and sealing performance of the battery pack. The specific type of fastener 80 can be flexibly selected according to actual needs, and this application embodiment does not limit it. The number and distribution of fastener 80 can also be flexibly set according to actual needs to meet the strength and sealing requirements of the battery pack in different application scenarios.

[0064] In some embodiments, such as Figure 6 and Figure 7 As shown, the first connecting part 22 is provided with a plurality of first mounting holes 222, and the second connecting part 32 is provided with a plurality of second mounting holes 322. Each first mounting hole 222 communicates with a second mounting hole 322. The first mounting holes 222 and the second mounting holes 322 are used for mounting and fixing the battery pack.

[0065] In this embodiment of the application, a first mounting hole 222 is provided on the first connecting part 22, and a second mounting hole 322 is provided on the second connecting part 32. Each first mounting hole 222 corresponds to a second mounting hole 322, so that when the battery pack is in use, the connector can pass through the first mounting hole 222 and the second mounting hole 322 to connect with the electrical equipment, thereby realizing the installation and fixation of the battery pack, which facilitates the installation and disassembly of the battery pack.

[0066] It is understood that the specific number and position of the first mounting hole 222 and the second mounting hole 322 can be flexibly designed according to the actual size of the battery pack and installation requirements to meet the fixing requirements under different application scenarios. This application embodiment does not limit them.

[0067] In some embodiments, such as Figure 5 and Figure 8 As shown, the cover 40 also includes a main body 43, which is connected to the mounting part 41 on the side away from the receiving cavity 70. The main body 43 is attached to the end face of the first housing 20 and the second housing 30 along the second direction Y.

[0068] In this embodiment, by providing a main body 43 on the side of the mounting part 41 away from the receiving cavity 70, the main body 43 is respectively attached to the end faces of the first housing 20 and the second housing 30. In this way, the main body 43 can be used to seal the cavity opening 73 of the receiving cavity 70 along the second direction Y, which can further improve the sealing between the cover 40 and the first housing 20 and the second housing 30.

[0069] Optionally, embodiments of this application also propose an electrical device including the battery pack described in the above embodiments.

[0070] In the embodiments of this application, by connecting the first housing 20 and the second housing 30 along the first direction X to form a receiving cavity 70 for placing the battery cell assembly 10, and by providing a mounting part 41 on the side of the cover 40 facing the cavity opening 73 of the receiving cavity 70, the connection between the cover 40 and the first housing 20 and the second housing 30 can be achieved using the mounting part 41. This makes the battery pack structure more compact, reduces the volume of the battery pack, and thus reduces the space occupied by the battery pack. At the same time, by providing a sealing surface 42 around the mounting part 41, and wrapping the first sealing member 50 around the sealing surface 42, so that one side of the first sealing member 50 abuts against the sealing surface 42 and the other side abuts against the first housing 20 and the second housing 30, the assembly gap between the mounting part 41 and the first housing 20 and the second housing 30 can be sealed. This sealing structure is simple, easy to assemble, and can improve the production efficiency of the battery pack.

[0071] In some embodiments, electrical devices may include laptops, pen-based computers, mobile computers, e-book players, portable telephones, portable fax machines, portable copiers, portable printers, stereo headphones, video recorders, LCD TVs, portable cleaners, portable CD players, mini CDs, transceivers, electronic notebooks, calculators, memory cards, portable recorders, radios, backup power supplies, motors, automobiles, motorcycles, electric bicycles, bicycles, ships, spacecraft, lighting fixtures, toys, game consoles, clocks, power tools, flashlights, cameras, large household batteries, and lithium-ion capacitors, etc.

[0072] Specifically, the vehicle can be a gasoline-powered vehicle, a natural gas-powered vehicle, or a new energy vehicle. New energy vehicles can be pure electric vehicles, hybrid electric vehicles, or range-extended electric vehicles, etc. In this specification, the terms "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described can be combined in any suitable manner in one or more embodiments or examples.

[0073] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0074] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. A battery pack, characterized by, include: The battery cell assembly (10), the first housing (20), the second housing (30), the cover (40), and the first seal (50); The battery has a first direction (X) and a second direction (Y) that are perpendicular to each other. The first housing (20) and the second housing (30) are enclosed along the first direction (X) to form a receiving cavity (70). The battery cell assembly (10) is disposed in the receiving cavity (70). The receiving cavity (70) has an opening (73) on one side along the second direction (Y), and the cover (40) seals the opening (73). The cover (40) has a mounting part (41) on the side facing the receiving cavity (70), and the mounting part (41) extends into the receiving cavity (70). The mounting part (41) is provided with a sealing surface (42) in the circumferential direction. The first sealing member (50) is arranged around the sealing surface (42). One side of the first sealing member (50) abuts against the sealing surface (42), and the other side of the first sealing member (50) abuts against the first housing (20) and the second housing (30) respectively, for sealing the gap between the cover (40) and the first housing (20) and the second housing (30).

2. The battery pack of claim 1, wherein, The battery pack also includes a second seal (60), which is disposed between the first housing (20) and the second housing (30) and is used to seal the gap between the first housing (20) and the second housing (30).

3. The battery pack of claim 2, wherein, The first housing (20) includes a first main body (21) and a first connecting part (22) arranged at least partially circumferentially around the first main body (21). The first main body (21) has a first groove (211). The second housing (30) includes a second main body (31) and a second connecting part (32) arranged at least partially circumferentially around the second main body (31). The second main body (31) has a second groove (311). The first main body (21) and the second main body (31) are connected along the first direction (X). The first groove (211) and the second groove (311) cooperate to form the receiving cavity (70). The first connecting part (22) is connected to the second connecting part (32). The second sealing member (60) is disposed between the first connecting part (22) and the second connecting part (32).

4. The battery pack of claim 1, wherein, The first sealing element (50) has a first adhesive layer (51) on the side facing the mounting part (41), and the first adhesive layer (51) is bonded and fixed to the sealing surface (42); And / or, the first seal (50) is provided with a second adhesive layer (52) on the side opposite to the mounting portion (41), and the second adhesive layer (52) is bonded and fixed to the first housing (20) and the second housing (30).

5. The battery pack of any one of claims 1-4, wherein, The battery pack also includes a potting compound (90); the receiving cavity (70) includes a first chamber (71) and a second chamber (72) that are interconnected, the first chamber (71) is located on the side of the second chamber (72) near the cover (40), the battery cell assembly (10) is disposed in the second chamber (72), and the potting compound (90) fills the first chamber (71); the mounting part (41) is at least partially embedded in the potting compound (90) so as to be connected to the first housing (20) and the second housing (30) respectively through the potting compound (90).

6. The battery pack of claim 5, wherein, The first housing (20) is recessed at one end near the cover (40) in the first direction (X) toward the direction away from the second housing (30) to form a first protrusion (23), and the second housing (30) is recessed at one end near the cover (40) in the first direction (X) toward the direction away from the first housing (20) to form a second protrusion (33). The first protrusion (23) and the second protrusion (33) together form the first chamber (71).

7. The battery pack of claim 3, wherein, The battery pack also includes a fastener (80). The first connecting part (22) is provided with a plurality of first connecting holes (221), which are arranged at intervals along the circumference of the first connecting part (22). The second connecting part (32) is provided with a plurality of second connecting holes (321), which are arranged at intervals along the circumference of the second connecting part (32). Each first connecting hole (221) corresponds to one second connecting hole (321). The fastener (80) passes through the first connecting hole (221) and the second connecting hole (321). The first connecting part (22) is connected to the second connecting part (32) through the fastener (80).

8. The battery pack of claim 3, wherein, The first connecting part (22) is provided with a plurality of first mounting holes (222), and the second connecting part (32) is provided with a plurality of second mounting holes (322). Each first mounting hole (222) communicates with a second mounting hole (322). The first mounting hole (222) and the second mounting hole (322) are used for mounting and fixing the battery pack.

9. The battery pack of claim 1, wherein, The cover (40) also includes a main body (43), which is connected to the side of the mounting part (41) away from the receiving cavity (70). The main body (43) is respectively attached to the end faces of the first housing (20) and the second housing (30) along the second direction (Y).

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

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