A battery pack and an electric device

Abstract

The application discloses a battery pack and an electric device. The battery pack comprises a first battery cell module, a second battery cell module and a connecting assembly. The first battery cell module and the second battery cell module are arranged at intervals along a first direction. The connecting assembly is arranged between the first battery cell module and the second battery cell module. The connecting assembly comprises a first connecting piece and a second connecting piece. The first connecting piece is connected with the first battery cell module, and the second connecting piece is connected with the second battery cell module. The first connecting piece is connected with the second connecting piece. A first clamping structure is arranged on one side of the first connecting piece facing the second connecting piece. A second clamping structure is arranged on one side of the second connecting piece facing the first connecting piece. The first clamping structure and the second clamping structure are used to connect the two battery cell modules. The relative movement of the two battery cell modules can be limited, the stability of the connection of the two battery cell modules can be ensured, the setting interval between the two battery cell modules can be reduced, and the internal space of the battery pack required to be occupied can be saved.

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] With the rapid development of new energy vehicles, people have higher and higher requirements for the performance of electric vehicles. The power battery pack is the core component of new energy vehicles, and the structure and capacity of the battery pack are of great significance to the performance of the battery pack.

[0003] In related technologies, to increase the battery capacity of a battery pack, a dual-row cell module is typically used, with an aluminum plate and a plastic plate placed between the two cell modules for fixation. However, by placing the aluminum plate and plastic plate between the two cell modules, the spacing between them becomes larger, thus increasing the space required to house the cell modules within the battery pack. Utility Model Content

[0004] This application aims to provide a battery pack that can solve the problem in related technologies where the large spacing between two cell modules results in a large space occupied by 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 provide a battery pack, including: a first cell module, a second cell module, and a connecting assembly, wherein the battery pack has a first orientation;

[0007] The first battery cell module and the second battery cell module are arranged at intervals along the first direction, and the connecting component is disposed between the first battery cell module and the second battery cell module;

[0008] The connection assembly includes a first connector and a second connector. The first connector is connected to the first battery cell module, and the second connector is connected to the second battery cell module. The first connector is connected to the second connector, and the first connector has a first snap-fit ​​structure on the side facing the second connector, and the second connector has a second snap-fit ​​structure on the side facing the first connector. The first snap-fit ​​structure and the second snap-fit ​​structure snap together to restrict the relative movement of the first battery cell module and the second battery cell module.

[0009] Optionally, the first snap-fit ​​structure is a groove provided on the first connector, and the second snap-fit ​​structure is a protrusion provided on the second connector, wherein the protrusion snaps into the groove;

[0010] Alternatively, the first snap-fit ​​structure is a protrusion on the first connector, and the second snap-fit ​​structure is a groove on the second connector, with the protrusion snapping into the groove.

[0011] Optionally, the battery pack further has a second direction perpendicular to the first direction, and both the first cell module and the second cell module include a plurality of cells stacked along the second direction, and the protrusion and the groove both extend along the second direction.

[0012] Optionally, the battery pack further includes a third direction, which is perpendicular to the first direction and the second direction respectively. The protrusions and the grooves are provided in multiples, and the multiple protrusions and the multiple grooves are arranged at intervals along the third direction. Each groove is engaged with one of the protrusions.

[0013] Optionally, the connection component further includes a first adhesive layer, and the battery pack further has a third direction perpendicular to the first direction;

[0014] The side of the first connector facing the second connector is a first side surface. The first side surface includes a first intermediate area and a first abutting area located on both sides of the first intermediate area along a third direction. The first snap-fit ​​structure is disposed in the first intermediate area.

[0015] The side of the second connector facing the first connector is the second side surface. The second side surface includes a second intermediate area and a second abutting area located on both sides of the second intermediate area along the third direction. The second snap-fit ​​structure is provided in the second intermediate area.

[0016] The first abutting area abuts against the second abutting area, and there is at least a gap between the first snap-fit ​​structure and the second snap-fit ​​structure. The first adhesive layer is disposed in the gap and is used to bond and fix the first connector and the second connector.

[0017] Optionally, the battery pack satisfies at least one of the following conditions:

[0018] A. A receiving groove is provided at the junction between the first intermediate area and the first contact area, and the receiving groove is connected to the gap to form an overflow groove;

[0019] B. A receiving groove is provided at the junction between the second intermediate area and the second contact area, and the receiving groove is connected to the gap to form an overflow groove;

[0020] C. A first receiving groove is provided at the junction between the first intermediate area and the first abutting area, and a second receiving groove is provided at the junction between the second intermediate area and the second abutting area. The first receiving groove and the second receiving groove cooperate to form the overflow groove.

[0021] Optionally, both the first battery cell module and the second battery cell module include a plurality of battery cells stacked in layers; the battery cells in the first battery cell module are first battery cells, and the first connector is provided with a plurality of spaced first slots on the side facing the first battery cell module, and each first battery cell is at least partially embedded in one of the first slots;

[0022] And / or, the battery cell in the second battery cell module is a second battery cell, and the second connector has a plurality of spaced second slots on one side facing the second battery cell module, and each second battery cell is at least partially embedded in one of the second slots.

[0023] Optionally, the connecting assembly further includes a second adhesive layer, which is disposed between the groove wall of the first slot and the first battery cell;

[0024] And / or, the second adhesive layer is disposed between the groove wall of the second slot and the second battery cell.

[0025] Optionally, the battery pack further includes an end plate, and the cell module includes multiple stacked cells, wherein the stacking arrangement direction of the multiple cells is a first direction;

[0026] The cell module has the end plate on at least one side along the first direction, and the battery pack also has a second direction perpendicular to the first direction. The first cell module and the second cell module have the end plate on at least one side along the second direction, and the first connector and the second connector are detachably connected to the end plate.

[0027] Secondly, embodiments of this application provide an electrical device including the battery pack described in any of the above claims.

[0028] In the embodiments of this application, a first connector and a second connector are provided between a first cell module and a second cell module arranged at intervals along a first direction, and the first connector is connected to the first cell module and the second connector is connected to the second cell module. At the same time, a first snap-fit ​​structure is provided on the first connector and a second snap-fit ​​structure is provided on the second connector. The two cell modules are connected by the snap-fit ​​cooperation between the first snap-fit ​​structure and the second snap-fit ​​structure. This not only restricts the relative movement between the two cell modules, thereby ensuring the stability of the connection between the two cell modules, but also saves the aluminum plate compared to the traditional battery pack structure, which makes it easier to reduce the spacing between the two cell modules and thus save the internal space of the battery pack occupied by the cell modules.

[0029] 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

[0030] 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:

[0031] Figure 1 This is a schematic diagram of a battery pack according to an embodiment of this application;

[0032] Figure 2 This is an exploded view of a battery pack according to an embodiment of this application;

[0033] Figure 3 This is a partial cross-sectional view of the corresponding connection component in the battery pack according to an embodiment of this application;

[0034] Figure 4 According to the embodiments of this application Figure 3 The center circle shows a magnified view of a portion of point A;

[0035] Figure 5 This is a cross-sectional schematic diagram of the first connector according to an embodiment of this application;

[0036] Figure 6 This is a cross-sectional schematic diagram of the second connector according to an embodiment of this application;

[0037] Figure 7 This is one of the structural schematic diagrams of the first connector according to an embodiment of this application;

[0038] Figure 8 This is a second structural schematic diagram of the first connector according to an embodiment of this application.

[0039] Figure label:

[0040] 110: First cell module; 120: Second cell module; 200: Connecting component; 210: First connector; 211: First side; 2111: First intermediate area; 2112: First abutment area; 2113: First snap-fit ​​structure; 2115: First slot; 220: Second connector; 221: Second side; 2211: Second intermediate area; 2212: Second abutment area; 2213: Second snap-fit ​​structure; 2215: Second slot; 230: Receiving groove; 231: First receiving groove; 232: Second receiving groove; 240: Glue overflow groove; 250: Gap; 300: End plate; X: First direction; Y: Second direction; Z: Third direction. Detailed Implementation

[0041] 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.

[0042] 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.

[0043] 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.

[0044] 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.

[0045] 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.

[0046] like Figure 1 and Figure 2As shown, a battery pack according to some embodiments of this application includes a first cell module 110, a second cell module 120, and a connecting assembly 200. The battery pack has a first direction X. The first cell module 110 and the second cell module 120 are arranged at intervals along the first direction X. The connecting assembly 200 is disposed between the first cell module 110 and the second cell module 120. The connecting assembly 200 includes a first connector 210 and a second connector 220. The first connector 210 is connected to the first cell module. 110 is connected, the second connector 220 is connected to the second cell module 120; the first connector 210 is connected to the second connector 220, and the first connector 210 is provided with a first snap-fit ​​structure 2113 on the side facing the second connector 220, and the second connector 220 is provided with a second snap-fit ​​structure 2213 on the side facing the first connector 210. The first snap-fit ​​structure 2113 and the second snap-fit ​​structure 2213 snap-fit ​​together to restrict the relative movement of the first cell module 110 and the second cell module 120.

[0047] In this embodiment, a first connector 210 and a second connector 220 are provided between the first cell module 110 and the second cell module 120 arranged at intervals along the first direction X. The first connector 210 is connected to the first cell module 110, and the second connector 220 is connected to the second cell module 120. At the same time, a first snap-fit ​​structure 2113 is provided on the first connector 210, and a second snap-fit ​​structure 2213 is provided on the second connector 220. The two cell modules are connected by the snap-fit ​​cooperation between the first snap-fit ​​structure 2113 and the second snap-fit ​​structure 2213. This not only restricts the relative movement between the two cell modules, thereby ensuring the stability of the connection between the two cell modules, but also saves the aluminum plate compared to the traditional battery pack structure. This makes it easier to reduce the spacing between the two cell modules, thereby saving the internal space of the battery pack occupied by the cell modules.

[0048] It should be noted that in battery packs of this technology, a common structure is a combination of two plastic side plates and a T-shaped aluminum plate placed between two cell modules to achieve connection between them. The T-shaped aluminum plate is positioned between the two plastic side plates to connect with them and provide support, preventing relative displacement. However, the addition of the T-shaped aluminum plate not only increases the distance between the two cell modules, thus increasing the internal space required for the connection structure, but also increases the overall weight of the battery pack.

[0049] To address this issue, this application utilizes a connecting component 200 to connect two battery cell modules. The connecting component 200 includes a first connector 210 and a second connector 220. The snap-fit ​​structure of the first connector 210 and the second connector 220 prevents relative movement between the two battery cell modules, thereby reducing material costs and the weight of the battery pack.

[0050] Optionally, the first snap-fit ​​structure 2113 is a groove provided on the first connector 210, and the second snap-fit ​​structure 2213 is a protrusion provided on the second connector 220, with the protrusion snapping into the groove; or, the first snap-fit ​​structure 2113 is a protrusion provided on the first connector 210, and the second snap-fit ​​structure 2213 is a groove provided on the second connector 220, with the protrusion snapping into the groove.

[0051] In this embodiment, by setting the first snap-fit ​​structure 2113 on the first connector 210 as a groove and the second snap-fit ​​structure 2213 on the second connector 220 as a protrusion; or by setting the first snap-fit ​​structure 2113 on the first connector 210 as a protrusion and the second snap-fit ​​structure 2213 on the second connector 220 as a groove, the connection between the first connector 210 and the second connector 220 can be achieved by the snap-fit ​​between the groove and the protrusion. Furthermore, this connection method using the groove and protrusion not only provides accurate positioning and good connection stability but also facilitates processing and installation.

[0052] Specifically, refer to Figure 5 and Figure 6 As shown, the first snap-fit ​​structure 2113 on the first connector 210 is set as a protrusion, and the second snap-fit ​​structure 2213 on the second connector 220 is set as a groove. The protrusion is inserted into the groove to realize the connection between the first connector 210 and the second connector 220.

[0053] Of course, the first snap-fit ​​structure 2113 on the first connector 210 can also be set as a groove, and the second snap-fit ​​structure 2213 on the second connector 220 can be set as a protrusion. The protrusion is inserted into the groove to realize the connection between the first connector 210 and the second connector 220.

[0054] It should be noted that other snap-fit ​​structures can also be used; for example, a snap-fit ​​structure can be selected. Of course, the specific implementation of the snap-fit ​​structure can be flexibly selected according to actual needs, and the embodiments of this application do not limit it.

[0055] Optionally, such as Figure 2 and Figure 7As shown, the battery pack also has a second direction Y perpendicular to the first direction X. The first cell module 110 and the second cell module 120 both include a plurality of cells stacked along the second direction Y, and the protrusions and grooves extend along the second direction Y.

[0056] In this embodiment, by providing multiple cells stacked along the second direction Y in the first cell module 110 and the second cell module 120, the energy density and range of the battery pack can be improved. Furthermore, by setting the protrusions and grooves to extend along the second direction Y, that is, the extension direction of the protrusions and grooves is consistent with the arrangement direction of the multiple cells, the locking and limiting effect of the first connector 210 and the second connector 220 at different positions in the second direction Y can be ensured, which can further prevent relative movement between local positions of the first cell module 110 and the second cell module 120, thereby improving the connection stability between the first cell module 110 and the second cell module 120.

[0057] Optionally, such as Figures 5-7 As shown, the battery pack also includes a third direction Z, which is perpendicular to the first direction X and the second direction Y. There are multiple protrusions and grooves, and the multiple protrusions and multiple grooves are arranged at intervals along the third direction Z. Each groove is engaged with a protrusion.

[0058] In this embodiment, by providing at least a plurality of protrusions and a plurality of grooves at intervals along the third direction Z, and by having each groove corresponding to a protrusion and engaging with it, the engaging and limiting effect between the first connector 210 and the second connector 220 can be increased, thereby further preventing relative sliding between the first battery module 110 and the second battery module 120 along the third direction Z, thereby improving the connection stability and reliability between the first battery module 110 and the second battery module 120.

[0059] It is understood that the number and position of the protrusions and grooves correspond one-to-one, and the spacing between two adjacent protrusions can also be flexibly set according to actual process requirements. This application does not impose any limitations on this.

[0060] Optionally, such as Figure 3 , Figure 5 and Figure 6As shown, the connecting assembly 200 further includes a first adhesive layer, and the battery pack also has a third direction Z perpendicular to the first direction X. The side of the first connector 210 facing the second connector 220 is a first side surface 211, which includes a first intermediate region 2111 and first abutment regions 2112 located on both sides of the first intermediate region 2111 along the third direction Z. A first snap-fit ​​structure 2113 is disposed in the first intermediate region 2111. The side of the second connector 220 facing the first connector 210 is a second side surface 211. 21. The second side 221 includes a second intermediate area 2211 and second abutting areas 2212 located on both sides of the second intermediate area 2211 along the third direction Z. A second snap-fit ​​structure 2213 is disposed in the second intermediate area 2211. The first abutting area 2112 abuts against the second abutting area 2212, and at least a gap 250 exists between the first snap-fit ​​structure 2113 and the second snap-fit ​​structure 2213. A first adhesive layer is disposed in the gap 250 for bonding and fixing the first connector 210 and the second connector 220.

[0061] In this embodiment, by filling the gap 250 between the first snap-fit ​​structure 2113 and the second snap-fit ​​structure 2213 with a first adhesive layer, the adhesive effect of the first adhesive layer can improve the connection strength and stability between the first connector 210 and the second connector 220. At the same time, by providing a first abutment area 2112 on both sides of the first intermediate region 2111 along the third direction Z and a second abutment area 2212 on both sides of the second intermediate region 2211 along the third direction Z, the abutment effect of the first abutment area 2112 and the second abutment area 2212 can not only position the connection between the first connector 210 and the second connector 220, but also prevent the first adhesive layer in the gap 250 from overflowing and affecting other components of the battery cell module.

[0062] In some embodiments, a receiving groove 230 is provided at the junction between the first intermediate region 2111 and the first abutting region 2112, and the receiving groove 230 communicates with the gap 250 to form an overflow groove 240.

[0063] In this embodiment, a receiving groove 230 is provided at the junction between the first intermediate area 2111 and the first abutting area 2112, so that the receiving groove 230 and the gap 250 are connected to form an overflow groove 240, so that the excess first adhesive layer from the gap 250 can be collected by the overflow groove 240.

[0064] In some embodiments, a receiving groove 230 is provided at the junction between the second intermediate region 2211 and the second abutment region 2212, and the receiving groove 230 communicates with the gap 250 to form an overflow groove 240.

[0065] In this embodiment of the application, a receiving groove 230 is provided at the junction between the second intermediate area 2211 and the second abutment area 2212, so that the receiving groove 230 and the gap 250 are connected to form an overflow groove 240, so that the excess first adhesive layer from the gap 250 can be collected by the overflow groove 240.

[0066] Specifically, structural adhesive can be selected as the first bonding layer. During the bonding process of filling the structural adhesive between the first intermediate region 2111 and the second intermediate region 2211, a redundancy is provided in the amount of structural adhesive to ensure that the structural adhesive fully fills the gap 250. Furthermore, by providing a receiving groove 230 at the junction between the first intermediate region 2111 and the first abutting region 2112, or at the junction between the second intermediate region 2211 and the second abutting region 2212, an overflow groove 240 is formed, thereby collecting excess structural adhesive in the gap 250. At the same time, due to the abutment of the first abutting region 2112 and the second abutting region 2212, the structural adhesive in the overflow groove 240 can be prevented from overflowing into the gap 250 between the first connector 210 and the second connector 220. After the structural adhesive in the overflow groove 240 is cured, it also plays a bonding role for the first connector 210 and the second connector 220, thereby helping to improve the connection strength between the first connector 210 and the second connector 220.

[0067] In some embodiments, such as Figure 4 As shown, a first receiving groove 231 is provided at the junction between the first intermediate area 2111 and the first abutting area 2112, and a second receiving groove 232 is provided at the junction between the second intermediate area 2211 and the second abutting area 2212. The first receiving groove 231 and the second receiving groove 232 cooperate to form an overflow groove 240.

[0068] In this embodiment of the application, a first receiving groove 231 is provided at the junction between the first intermediate area 2111 and the first abutting area 2112, and a second receiving groove 232 is provided between the second intermediate area 2211 and the second abutting area 2212. The cooperation between the first receiving groove 231 and the second receiving groove 232 forms an overflow groove 240, which can increase the receiving space of the overflow groove 240 so that more structural adhesive can be collected.

[0069] In some embodiments, such as Figure 2 and 8 As shown, both the first battery cell module 110 and the second battery cell module 120 include multiple battery cells arranged in layers. The battery cells in the first battery cell module 110 are first battery cells. The first connector 210 is provided with multiple spaced first slots 2115 on the side facing the first battery cell module 110. Each first battery cell is at least partially embedded in one first slot 2115.

[0070] In this embodiment, by providing a plurality of spaced first slots 2115 on the side of the first connector 210 facing the first cell module 110, the first cell is at least partially embedded in the corresponding first slot 2115. This can improve the connection strength between the first cell and the first connector 210, and limit the large displacement between the first cell and the first connector 210 through the first slots 2115, thereby avoiding the shaking of the first cell during transportation or movement, and thus improving the stability and reliability of the first cell module 110.

[0071] In some embodiments, such as Figure 6 As shown, the battery cell in the second battery cell module 120 is the second battery cell. The second connector 220 has a plurality of spaced second slots 2215 on the side facing the second battery cell module 120, and each second battery cell is at least partially embedded in one second slot 2215.

[0072] In this embodiment, by providing a plurality of spaced second slots 2215 on the side of the second connector 220 facing the second cell module 120, the second cell is at least partially embedded in the corresponding second slot 2215. This can improve the connection strength between the second cell and the second connector 220, and limit the large displacement between the second cell and the second connector 220 through the second slots 2215, avoiding the shaking of the second cell during transportation or movement, thereby improving the stability and reliability of the second cell module 120.

[0073] Optionally, the connecting assembly 200 further includes a second adhesive layer disposed between the groove wall of the first slot 2115 and the first battery cell.

[0074] In this embodiment of the application, by providing a second adhesive layer between the groove wall of the first slot 2115 and the first battery cell, the connection strength between the first battery cell and the first connector 210 can be further improved, thereby limiting the relative displacement between the first battery cell and the first connector 210, thus avoiding the shaking of the first battery cell in the first slot 2115 during transportation or movement, thereby improving the stability of the first battery cell module 110.

[0075] Optionally, the second adhesive layer is disposed between the groove wall of the second slot 2215 and the second battery cell.

[0076] In this embodiment of the application, by providing a second adhesive layer between the groove wall of the second slot 2215 and the second battery cell, the connection strength between the second battery cell and the second connector 220 can be further improved, thereby limiting the relative displacement between the second battery cell and the second connector 220, thus avoiding the shaking of the second battery cell in the second slot 2215 during transportation or movement, thereby improving the stability of the second battery cell module 120.

[0077] It should be noted that the second adhesive layer can be a structural adhesive, which has strong bonding strength. Specifically, the structural adhesive can be polyurethane structural adhesive, acrylic structural adhesive, or silicone, etc. The specific type of structural adhesive can be flexibly selected according to actual process requirements, and this application embodiment does not limit it.

[0078] Optionally, such as Figure 2 As shown, the battery pack also includes an end plate 300, and the battery pack also has a second direction Y perpendicular to the first direction X. The first cell module 110 and the second cell module 120 are provided with the end plate 300 on at least one side along the second direction Y. The first connector 210 and the second connector 220 are detachably connected to the end plate 300 respectively.

[0079] In this embodiment of the application, by providing an end plate 300 on at least one side of the two cell modules along the second direction Y, and making the end plate 300 detachably connected to the first connector 210 and the second connector 220, the end plate 300 is used to encapsulate and protect the cell modules, thereby preventing damage to the two cell modules from external impacts or collisions and improving the safety of the cell modules.

[0080] It should be noted that the detachable connection between the end plate 300 and the first connector 210 and the second connector 220 facilitates the disassembly, maintenance, and replacement of the battery cell module. Furthermore, the detachable connection between the end plate 300 and the first connector 210 and the second connector 220 can be achieved through screw and nut connections or through a snap-fit ​​connection between a mounting plate and a slot. The specific detachable connection method can be flexibly selected according to actual process requirements, and this embodiment does not impose any limitations on it.

[0081] In some embodiments, this application also proposes an electrical device including the battery pack in any of the above embodiments.

[0082] In this embodiment, a first connector 210 and a second connector 220 are provided between the first cell module 110 and the second cell module 120 arranged at intervals along the first direction X. The first connector 210 is connected to the first cell module 110, and the second connector 220 is connected to the second cell module 120. At the same time, a first snap-fit ​​structure 2113 is provided on the first connector 210, and a second snap-fit ​​structure 2213 is provided on the second connector 220. The two cell modules are connected by the snap-fit ​​cooperation between the first snap-fit ​​structure 2113 and the second snap-fit ​​structure 2213. This not only restricts the relative movement between the two cell modules, thereby ensuring the stability of the connection between the two cell modules, but also saves the aluminum plate compared to the traditional battery pack structure. This makes it easier to reduce the spacing between the two cell modules, thereby saving the internal space of the battery pack occupied by the cell modules.

[0083] 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.

[0084] 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.

[0085] 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.

[0086] 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 in that, include: The battery pack comprises a first cell module (110), a second cell module (120), and a connecting assembly (200), and has a first orientation (X). The first battery cell module (110) and the second battery cell module (120) are arranged at intervals along the first direction (X), and the connecting component (200) is disposed between the first battery cell module (110) and the second battery cell module (120); The connection assembly (200) includes a first connector (210) and a second connector (220). The first connector (210) is connected to the first battery cell module (110), and the second connector (220) is connected to the second battery cell module (120). The first connector (210) is connected to the second connector (220), and the first connector (210) has a first snap-fit ​​structure (2113) on the side facing the second connector (220), and the second connector (220) has a second snap-fit ​​structure (2213) on the side facing the first connector (210). The first snap-fit ​​structure (2113) and the second snap-fit ​​structure (2213) snap together to restrict the relative movement of the first battery cell module (110) and the second battery cell module (120).

2. The battery pack according to claim 1, characterized in that, The first snap-fit ​​structure (2113) is a groove provided on the first connector (210), and the second snap-fit ​​structure (2213) is a protrusion provided on the second connector (220), wherein the protrusion snaps into the groove; Alternatively, the first snap-fit ​​structure (2113) is a protrusion provided on the first connector (210), and the second snap-fit ​​structure (2213) is a groove provided on the second connector (220), with the protrusion snapping into the groove.

3. The battery pack according to claim 2, characterized in that, The battery pack also has a second direction (Y) perpendicular to the first direction (X), and both the first cell module (110) and the second cell module (120) include a plurality of cells stacked along the second direction (Y), and the protrusion and the groove both extend along the second direction (Y).

4. The battery pack according to claim 3, characterized in that, The battery pack also includes a third direction (Z), which is perpendicular to the first direction (X) and the second direction (Y). The protrusions and the grooves are provided in multiples, and the multiple protrusions and the multiple grooves are arranged at intervals along the third direction (Z). Each groove is engaged with one of the protrusions.

5. The battery pack according to claim 2, characterized in that, The connection assembly (200) further includes a first adhesive layer, and the battery pack also has a third direction (Z) perpendicular to the first direction (X); The side of the first connector (210) facing the second connector (220) is a first side surface (211). The first side surface (211) includes a first intermediate area (2111) and a first abutting area (2112) located on both sides of the first intermediate area (2111) along the third direction (Z). The first snap-fit ​​structure (2113) is provided in the first intermediate area (2111). The side of the second connector (220) facing the first connector (210) is a second side surface (221). The second side surface (221) includes a second intermediate area (2211) and a second abutment area (2212) located on both sides of the second intermediate area (2211) along the third direction (Z). The second snap-fit ​​structure (2213) is provided in the second intermediate area (2211). The first abutting area (2112) abuts against the second abutting area (2212), and there is at least a gap (250) between the first snap-fit ​​structure (2113) and the second snap-fit ​​structure (2213). The first adhesive layer is disposed in the gap (250) for bonding and fixing the first connector (210) and the second connector (220).

6. The battery pack according to claim 5, characterized in that, The battery pack must meet at least one of the following conditions: A. A receiving groove (230) is provided at the junction between the first intermediate area (2111) and the first abutting area (2112), and the receiving groove (230) is connected to the gap (250) to form an overflow groove (240); B. A receiving groove (230) is provided at the junction between the second intermediate area (2211) and the second abutting area (2212), and the receiving groove (230) is connected to the gap (250) to form an overflow groove (240); C. A first receiving groove (231) is provided at the junction between the first intermediate area (2111) and the first abutting area (2112), and a second receiving groove (232) is provided at the junction between the second intermediate area (2211) and the second abutting area (2212). The first receiving groove (231) and the second receiving groove (232) cooperate to form the overflow groove (240).

7. The battery pack according to any one of claims 1-6, characterized in that, Both the first battery cell module (110) and the second battery cell module (120) include multiple battery cells arranged in layers; The battery cell in the first battery cell module (110) is a first battery cell. The first connector (210) has a plurality of spaced first slots (2115) on the side facing the first battery cell module (110). Each first battery cell is at least partially embedded in one of the first slots (2115). And / or, the battery cell in the second battery cell module (120) is a second battery cell, and the second connector (220) has a plurality of spaced second slots (2215) on the side facing the second battery cell module (120), and each second battery cell is at least partially embedded in one of the second slots (2215).

8. The battery pack according to claim 7, characterized in that, The connecting assembly (200) further includes a second adhesive layer, which is disposed between the groove wall of the first slot (2115) and the first battery cell; And / or, the second adhesive layer is disposed between the groove wall of the second slot (2215) and the second battery cell.

9. The battery pack according to claim 1, characterized in that, The battery pack further includes an end plate (300), and the battery pack also has a second direction (Y) perpendicular to the first direction (X). The end plate (300) is provided on at least one side of the first cell module (110) and the second cell module (120) along the second direction (Y). The first connector (210) and the second connector (220) are detachably connected to the end plate (300) respectively.

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

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