Battery pack and electric device with same

Abstract

The battery pack comprises a shell, a power distribution structure and a battery assembly, a containing cavity is formed in the shell, a plurality of plug connectors arranged at intervals in the first direction are arranged on the shell, and the power distribution structure and the battery assembly are arranged in the containing cavity and located on one side of the battery assembly in the second direction. The battery assembly is electrically connected with the power distribution structure, the power distribution structure is provided with an electric connection end, and the electric connection end is electrically connected with the plug connector. According to the battery pack provided by the embodiment of the utility model, the technical problem that the connecting piece for connecting the electric connecting end and the plug connector needs to cross over the battery pack when the electric connecting end and the plug connector are electrically connected in the prior art is effectively solved, so that the electric connecting difficulty of the electric connecting end and the plug connector is reduced, and the connecting length of the power distribution structure and the plug connector is shortened; electric connection between the connecting piece for connecting the electric connecting end and the plug connector and the battery pack is avoided, the structure of the battery pack is simplified, the weight and the manufacturing cost of the battery pack are reduced, and the use safety of the battery pack is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of battery packs, in particular to a battery pack and an electrical device having the same. Background Art

[0002] In the prior art, in order to reasonably distribute electrical energy and make the entire circuit of the battery pack more convenient to operate, a distribution box is usually set in the battery pack, and the distribution box is configured to be electrically connected to the battery group and the connectors on the battery pack through a bus.

[0003] However, when the existing distribution box is connected with the battery pack and connectors, especially four-wheel drive vehicles, such vehicles must be equipped with at least two connectors, one in front and one in the rear, which makes the bus wiring more complicated, increases the manufacturing cost of the battery pack, and reduces the safety of the battery pack and the space utilization. Utility Model Content

[0004] The present invention aims to address at least one of the technical problems existing in the prior art. To this end, the present invention proposes a battery pack that simplifies and shortens busbar routing, thereby reducing the difficulty of connecting the power distribution structure with connectors and battery packs. This solves the technical problem of complex busbar routing in the prior art when connecting the power distribution box with the battery pack and connectors.

[0005] The present invention also aims to provide an electrical device having the battery pack.

[0006] According to an embodiment of the present invention, the battery pack includes: a shell, a accommodating cavity is formed in the shell, and the shell is provided with a plurality of connectors arranged at intervals in a first direction; a power distribution structure and a battery assembly, the power distribution structure and the battery assembly are both arranged in the accommodating cavity and the connector and the power distribution structure are both located on one side of the battery assembly in a second direction, the battery assembly is electrically connected to the power distribution structure, the power distribution structure is provided with an electrical connection end, the electrical connection end is electrically connected to the connector, and the first direction and the second direction are arranged perpendicularly.

[0007] According to the battery pack of the embodiment of the present invention, by arranging multiple connectors to be spaced apart along the first direction and arranging the connectors and the power distribution structure on one side of the battery assembly in the second direction, on the one hand, the power distribution structure can be arranged close to the battery assembly, thereby facilitating the electrical connection between the battery assembly and the power distribution structure and reducing the difficulty of electrical connection between the battery assembly and the power distribution structure. On the other hand, the connector can also be arranged close to the power distribution structure. In this way, when the electrical connection end and the connector on the power distribution structure are electrically connected, it is convenient to shorten the distance between the electrical connection end and the corresponding connector, and avoid the connector connecting the electrical connection end and the connector crossing the battery assembly. While reducing the difficulty of electrical connection between the electrical connection end and the connector, it can also avoid, to a certain extent, the connector connecting the electrical connection end and the connector and the battery assembly from forming an electrical connection. It can also simplify the structure of the battery pack, reduce the weight and manufacturing cost of the battery pack, and improve the safety of the battery pack.

[0008] In some embodiments, the power distribution structure is provided with a plurality of electrical connection ends arranged along the first direction, and each of the electrical connection ends is electrically connected to the connector on the same side.

[0009] In some embodiments, the battery assembly includes at least two battery packs arranged along the first direction, and two adjacent battery packs are electrically connected.

[0010] In some embodiments, the battery assembly includes a first output electrode and a second output electrode, the first output electrode and the second output electrode have different polarities, and the first output electrode and the second output electrode are electrically connected to the power distribution structure respectively.

[0011] In some embodiments, each of the battery packs includes a plurality of battery cells extending along the first direction and arranged sequentially in the second direction, and the first output electrode and the second output electrode are respectively located in different groups of battery cells close to the power distribution structure.

[0012] In some embodiments, the power distribution structure includes a first connection portion and a second connection portion spaced apart in the first direction, and the first connection portion and the second connection portion are electrically connected to the first output electrode and the second output electrode, respectively.

[0013] In some embodiments, in the second direction, the first connecting portion and the second connecting portion are disposed close to the battery assembly.

[0014] In some embodiments, the accommodating cavity includes a first accommodating cavity and a second accommodating cavity spaced apart in the second direction, the power distribution structure is arranged in the first accommodating cavity, the battery assembly is arranged in the second accommodating cavity, and the first accommodating cavity is provided with the connector on the side wall in the first direction.

[0015] In some embodiments, a first partition beam and a first wiring channel are provided between the first accommodating cavity and the second accommodating cavity, and the first wiring channel connects the first accommodating cavity and the second accommodating cavity.

[0016] In some embodiments, the first wiring channel is formed at at least one end of the first dividing beam; and / or the first wiring channel is arranged near the middle of the accommodating cavity in the first direction.

[0017] In some embodiments, the battery assembly includes at least two battery packs arranged along the first direction, and the second accommodating cavities include multiple second accommodating cavities, which are arranged at intervals in the first direction, and the multiple second accommodating cavities correspond one-to-one to the multiple battery packs.

[0018] In some embodiments, a second partition beam and a second wiring channel are provided between two adjacent second accommodating cavities, and the second wiring channel connects the two adjacent second accommodating cavities.

[0019] An electrical device according to an embodiment of the present invention includes the aforementioned battery pack.

[0020] According to the electric device of the embodiment of the present invention, by adopting the aforementioned battery pack, it is possible to simplify the structure of the electric device, reduce the weight and manufacturing cost of the electric device, and improve the safety of the electric device.

[0021] Additional aspects and advantages of the present invention will become apparent from the following description or may be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0023] Figure 1 Schematic diagram of the partial structure of the battery pack of some embodiments of the first aspect of the present utility model.

[0024] Figure 2 This is a top view of a partial structure of a battery pack according to some embodiments of the first aspect of the present invention.

[0025] Figure 3 This is a simplified schematic diagram of the connection between the battery assembly and the power distribution structure in some embodiments of the first aspect of the present utility model.

[0026] Figure 4 Schematic diagram of the partial structure of the battery pack of some embodiments of the second aspect of the present invention.

[0027] Figure 5This is a top view of a partial structure of a battery pack according to some embodiments of the second aspect of the present invention.

[0028] Figure 6 This is a simplified schematic diagram of the connection between the battery assembly and the power distribution structure in some embodiments of the second aspect of the present utility model.

[0029] Figure 7 Schematic diagram of battery cells according to some embodiments of the present invention.

[0030] Figure 8 Schematic diagram of a partial structure of a battery cell according to some embodiments of the present invention.

[0031] Figure 9 This is a schematic diagram of a partial structure of a battery cell from another angle in some embodiments of the present invention.

[0032] Reference numerals:

[0033] 1000, battery pack;

[0034] 100, shell;

[0035] 110, accommodating chamber; 111, first accommodating chamber; 112, second accommodating chamber;

[0036] 120, connector;

[0037] 130, first dividing beam;

[0038] 140, first wiring channel;

[0039] 150, second dividing beam;

[0040] 160, second wiring channel;

[0041] 200. Power distribution structure;

[0042] 300, battery assembly;

[0043] 310, battery pack;

[0044] 311, battery cell; 3111, first pole; 3112, second pole;

[0045] 410, first electrical connector; 420, second electrical connector; 430, third electrical connector. DETAILED DESCRIPTION

[0046] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0047] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0048] The battery pack 1000 according to an embodiment of the present invention will be described below with reference to the accompanying drawings.

[0049] like Figure 1 、 Figure 2 、 Figure 4 and Figure 5 As shown, the battery pack 1000 according to an embodiment of the present invention includes: a housing 100 , a power distribution structure 200 and a battery assembly 300 .

[0050] Among them, such as Figure 1 、 Figure 2 、 Figure 4 and Figure 5 As shown, a receiving cavity 110 is formed in the housing 100 , and the housing 100 is provided with a plurality of connectors 120 spaced apart in a first direction.

[0051] It should be noted that the first direction mentioned here can be understood as Figure 1 and Figure 4 In the X direction shown in the figure, that is, the housing 100 is provided with a plurality of connectors 120, and the plurality of connectors 120 are spaced apart in the X direction, and the power distribution structure 200 is provided with a plurality of electrical connection terminals, and the plurality of electrical connection terminals are spaced apart in the X direction so that the arrangement direction of the plurality of electrical connection terminals is consistent with the arrangement direction of the plurality of connectors 120.

[0052] Among them, multiple connectors 120 are used to realize the electrical connection between the battery pack 1000 and the external power supply or external electrical components, reducing the difficulty of the electrical connection between the battery pack 1000 and the external power supply or external electrical components, so that the battery pack 1000 can be effectively charged and discharged, thereby ensuring the working performance of the battery pack 1000.

[0053] like Figure 1 、 Figure 2 、 Figure 4 and Figure 5 As shown, the power distribution structure 200 and the battery assembly 300 are both arranged in the accommodating cavity 110 and the connector 120 and the power distribution structure 200 are both located on one side of the battery assembly 300 in the second direction. The battery assembly 300 is electrically connected to the power distribution structure 200. The power distribution structure 200 is provided with an electrical connection end, which is electrically connected to the connector 120, and the first direction and the second direction are arranged vertically.

[0054] Among them, the second direction mentioned here can be understood as Figure 1 and Figure 4 In the Y direction shown in the figure, that is, the power distribution structure 200 and the battery assembly 300 are both arranged in the accommodating cavity 110 and the connector 120 and the power distribution structure 200 are both located on the side of the battery assembly 300 in the Y direction. By arranging the power distribution structure 200 and the battery assembly 300 in the accommodating cavity 110, while realizing the structural integration of the battery pack 1000 to reduce the volume of the battery pack 1000, it is also possible to utilize the outer shell 100 to protect and support the power distribution structure 200 and the battery assembly 300, so as to extend the service life of the power distribution structure 200 and the battery assembly 300, ensure the safety of the use of the power distribution structure 200 and the battery assembly 300 to a certain extent, and make the structure of the power distribution structure 200 and the battery assembly 300 stable, thereby ensuring the working performance of the power distribution structure 200 and the battery assembly 300.

[0055] At the same time, by arranging the distribution structure 200 on one side of the battery assembly 300 in the second direction, the battery assembly 300 can also be arranged close to the distribution structure 200 to facilitate the electrical connection between the battery assembly 300 and the distribution structure 200, thereby reducing the difficulty of electrical connection between the battery assembly 300 and the distribution structure 200.

[0056] By arranging the connector 120 and the power distribution structure 200 on one side of the battery assembly 300 in the second direction, since multiple connectors 120 are arranged at intervals in the first direction and the electrical connection end on the power distribution structure 200 needs to be electrically connected to the connector 120, it is ensured that the electrical connection end on the power distribution structure 200 is arranged close to the connector 120. While achieving electrical connection between the electrical connection end and the connector 120, it is also possible to shorten the distance between the electrical connection end and the corresponding connector 120, which is beneficial to shortening the length of the connector connecting the electrical connection end and the connector 120. While reducing the difficulty of electrical connection between the electrical connection end and the connector 120, it is also possible to simplify the structure of the connector, reduce the cost of using the connector, and reduce the weight of the connector, thereby simplifying the structure of the battery pack 1000 and reducing the weight and manufacturing cost of the battery pack 1000.

[0057] The connector mentioned here can be understood as the first electrical connector 410 mentioned below.

[0058] At the same time, shortening the length of the connector connecting the electrical connection end and the connector 120 can also avoid electrical connection between the connector connecting the electrical connection end and the connector 120 and other structural parts (such as the battery assembly 300) to a certain extent, thereby improving the safety of the battery pack 1000.

[0059] In addition, the above-mentioned arrangement can also avoid, to a certain extent, the battery assembly 300 from being formed between the power distribution structure 200 and the connector 120. While reducing the difficulty of electrical connection between the power distribution structure 200 and the connector 120, it can also avoid the connector connecting the electrical connection end and the connector 120 from crossing over the battery assembly 300, thereby solving the technical problem in the prior art that when the electrical connection end and the connector 120 are electrically connected, the connector connecting the electrical connection end and the connector 120 needs to cross over the battery assembly 300, thereby avoiding, to a certain extent, the connector connecting the electrical connection end and the connector 120 from forming an electrical connection with the battery assembly 300, thereby improving the safety of the battery pack 1000.

[0060] That is to say, the connector 120 and the battery assembly 300 are respectively electrically connected to the distribution structure 200, and the connector 120 and the battery assembly 300 are both arranged close to the distribution structure 200. While reducing the difficulty of electrical connection between the distribution structure 200 and the connector 120 and the battery assembly 300, it can also avoid the connector 120 and the battery assembly 300 from contacting to form an electrical connection to a certain extent, and avoid the connector connecting the electrical connection end and the connector 120 from contacting to form an electrical connection with the connector connecting the battery assembly 300 and the distribution structure 200 to a certain extent, thereby improving the safety of the battery pack 1000.

[0061] In summary, the battery pack 1000 of the present application can effectively solve the technical problem in the prior art that when the electrical connection end of the power distribution structure 200 and the connector 120 on the housing 100 are electrically connected, the connector connecting the electrical connection end and the connector 120 needs to cross the battery assembly 300. While reducing the difficulty of electrical connection between the electrical connection end and the connector 120, it can also shorten the connection length of the connector connecting the power distribution structure 200 and the connector 120, and to a certain extent avoid the electrical connection between the connector connecting the electrical connection end and the connector 120 and the battery assembly 300, thereby simplifying the structure of the battery pack 1000, reducing the weight and manufacturing cost of the battery pack 1000, and improving the safety of use of the battery pack 1000.

[0062] It can be seen from the above structure that the battery pack 1000 of the embodiment of the utility model creatively sets the relative positions of the connector 120, the distribution structure 200 and the battery assembly 300. Specifically, multiple connectors 120 are arranged at intervals in the first direction and the connector 120 and the distribution structure 200 are both arranged on one side of the battery assembly 300 in the second direction. While realizing the electrical connection between the distribution structure 200 and the connector 120, the length of the connector connecting the distribution structure 200 and the connector 120 can also be shortened, thereby reducing the connection cost and difficulty of the distribution structure 200 and the connector 120. At the same time, the distance between the electrical connection end and the connector 120 can be made smaller, thereby improving the safety of the electrical connection.

[0063] At the same time, by setting the distribution structure 200 on the side of the battery assembly 300 in the second direction, while facilitating the electrical connection between the battery assembly 300 and the distribution structure 200, it can also avoid, to a certain extent, the contact between the connector 120 and the battery assembly 300 to form an electrical connection, and to a certain extent avoid the contact between the connector connecting the electrical connection end and the connector 120 and the connector connecting the battery assembly 300 and the distribution structure 200 to form an electrical connection, thereby improving the safety of the battery pack 1000.

[0064] It can be understood that compared with the prior art, the present application arranges multiple connectors 120 at intervals in the first direction and arranges the connectors 120 and the distribution structure 200 on one side of the battery assembly 300 in the second direction. While reducing the difficulty of electrical connection of the battery pack 1000, it can also simplify the structure of the battery pack 1000, reduce the weight and manufacturing cost of the battery pack 1000, and improve the safety of the battery pack 1000.

[0065] In some embodiments, as Figure 1 、 Figure 2 、 Figure 4 and Figure 5 As shown, the power distribution structure 200 is provided with a plurality of electrical connection ends arranged along a first direction, and each electrical connection end is electrically connected to the connector 120 on the same side.

[0066] It should be noted that each electrical connection end is electrically connected to the plug connector 120 on the same side. This means that in the battery pack 1000, the first direction has one side and the other side that are oppositely arranged. When the electrical connection end on one side of the first direction needs to be electrically connected to the plug connector 120, the electrical connection end is electrically connected to the plug connector 120 on one side of the first direction. When the electrical connection end on the other side of the first direction needs to be electrically connected to the plug connector 120, the electrical connection end is electrically connected to the plug connector 120 on the other side of the first direction. In this way, each electrical connection end is electrically connected to the plug connector 120 on the other side of the first direction. The connectors 120 on the same side form an electrical connection, so that while achieving electrical connection between the electrical connection end and the connector 120, the distance between the electrical connection end and the corresponding connector 120 can also be shortened, which is beneficial to shortening the length of the connector connecting the electrical connection end and the connector 120. While reducing the difficulty of electrical connection between the electrical connection end and the connector 120, it can also simplify the structure of the connector, reduce the cost of using the connector, and reduce the weight of the connector, thereby simplifying the structure of the battery pack 1000 and reducing the weight and manufacturing cost of the battery pack 1000.

[0067] In some embodiments, the plurality of electrical connection terminals are respectively disposed on both sides of the power distribution structure 200 in the first direction, thereby arranging the plurality of electrical connection terminals along the first direction.

[0068] Of course, in some other embodiments, multiple electrical connection terminals may also be arranged on the same side of the power distribution structure 200 but arranged in the first direction. In this way, multiple electrical connection terminals may be arranged to be arranged along the first direction, such as: multiple electrical connection terminals are all arranged on the side of the power distribution structure 200 in the second direction or the third direction, or, some electrical connection terminals are arranged on the side of the power distribution structure 200 in the second direction, and another part of the electrical connection terminals are arranged on the side of the power distribution structure 200 in the third direction, but multiple electrical connection terminals are arranged in the first direction, which is also conducive to shortening the length of the connector connecting the electrical connection terminal and the connector 120.

[0069] The third direction is perpendicular to the first direction and the second direction. In a specific example, the third direction is the up-down direction of the power distribution structure 200 .

[0070] In some embodiments, as Figure 1 、 Figure 2 、 Figure 4 and Figure 5 As shown, a first electrical connector 410 is provided between the power distribution structure 200 and the connector 120, and each electrical connection end is electrically connected to the connector 120 on the same side through the first electrical connector 410, so as to realize the electrical connection between the power distribution structure 200 and the connector 120 and reduce the difficulty of the electrical connection between the power distribution structure 200 and the connector 120.

[0071] It should be noted that when the electrical connection end is electrically connected to the plug connector 120 through the first electrical connector 410, by setting the arrangement direction of the multiple electrical connection ends to be consistent with the arrangement direction of the multiple plug connectors 120, and electrically connecting each electrical connection end to the plug connector 120 on the same side, the length of the first electrical connector 410 can be shortened, the use cost of the first electrical connector 410 can be reduced, the weight of the first electrical connector 410 can be reduced, and to a certain extent, the first electrical connector 410 can be avoided from forming an electrical connection with the battery assembly 300, thereby improving the safety of the battery pack 1000.

[0072] In some embodiments, the power distribution structure 200 is a BDU (Battery Disconnect Unit). The power distribution structure 200 can coordinate the functional conversion and energy distribution of high-voltage accessories such as the motor control system, battery management system, charging management system, DC / DC converter, electric air conditioner, electric power steering, and braking system of the power-consuming device, which helps to ensure the smooth operation and efficient coordination between the various components of the power-consuming device, not only improving the safety and stable operation of the high-voltage circuit system of the power-consuming device, but also improving the performance of the power-consuming device and user experience.

[0073] In some embodiments, as Figure 1 、 Figure 2 、 Figure 4 and Figure 5 As shown, the battery pack 1000 includes a second electrical connector 420, which is electrically connected to the battery assembly 300 and the power distribution structure 200 respectively to achieve electrical connection between the battery assembly 300 and the power distribution structure 200, thereby reducing the difficulty of electrical connection between the battery assembly 300 and the power distribution structure 200.

[0074] The second electrical connector 420 mentioned here can be understood as a bus bar or a metal plate.

[0075] It should be noted that, in the description of the present invention, unless otherwise specified, “plurality” means two or more, that is, the housing 100 is provided with two or more connectors 120 spaced apart in the first direction.

[0076] In a specific example, Figure 1 、 Figure 2 、 Figure 4 and Figure 5 As shown, two connectors 120 are provided on the housing 100 , and the two connectors 120 are spaced apart in the first direction.

[0077] It should also be noted that when the battery pack 1000 is applied to a vehicle, the first direction is the front and rear direction of the vehicle, that is, the first direction is from the front to the rear of the vehicle. One of the two connectors 120 is located in the front direction of the vehicle, and the other is located in the front direction of the vehicle. The connector 120 located in the front direction of the vehicle is a discharge interface, and the connector 120 located in the rear direction of the vehicle is a fast charging interface.

[0078] Of course, in some other embodiments, the connector 120 located at the front of the vehicle may be a fast charging interface, and the connector 120 located at the rear of the vehicle may be a discharge interface.

[0079] In some embodiments, the battery assembly 300 includes at least two battery packs 310 arranged along a first direction, and two adjacent battery packs 310 are electrically connected. Here, the battery assembly 300 may include two battery packs 310 arranged along a first direction (such as Figure 1 and Figure 4 As shown), it may also include three groups of battery packs 310 arranged along the first direction (not shown in this example figure), or include more groups of battery packs 310 arranged along the first direction, and electrically connect two adjacent groups of battery packs 310 to form a battery assembly 300.

[0080] Among them, by configuring the battery assembly 300 to include at least two battery groups 310, the capacity of the battery pack 1000 can be increased, and the working performance of the battery pack 1000 can be guaranteed to a certain extent.

[0081] In some embodiments, two adjacent battery packs 310 are spaced apart in the first direction, which can improve the safety of the battery packs 310 and prevent the two adjacent battery packs 310 from directly contacting and forming an electrical connection.

[0082] In some embodiments, as Figure 2 and Figure 5 As shown, the battery pack 1000 includes a third electrical connector 430 , and two adjacent battery packs 310 are connected via the third electrical connector 430 , so that the two adjacent battery packs 310 are electrically connected and the difficulty of electrical connection between the two adjacent battery packs 310 is reduced.

[0083] The third electrical connector 430 mentioned here can be understood as a bus bar or a metal plate.

[0084] It should be noted that by arranging the plurality of battery packs 310 in a first direction, each battery pack 310 can be arranged close to the power distribution structure 200 (eg Figure 1 and Figure 4As shown), this can avoid the phenomenon that one battery pack 310 is located between another battery pack 310 and the power distribution structure 200, which is beneficial to reducing the difficulty of electrical connection between multiple battery packs 310 and the power distribution structure 200, and can shorten the use length of the second electrical connector 420. At the same time, it can also avoid to a certain extent the situation where two second electrical connectors 420 with a pressure difference are parallel over a long distance, thereby simplifying the bus wiring of the battery pack 1000, and providing convenience for the manufacturing cost, use safety and space utilization of the battery pack 1000.

[0085] That is to say, the present application simplifies the routing path and routing length of the second electrical connector 420 by arranging the battery assembly 300 on one side of the power distribution structure 200 in the second direction and arranging at least two battery groups 310 of the battery assembly 300 to be arranged along the first direction, thereby reducing the cost of the second electrical connector 420 and improving the safety of the battery pack 1000.

[0086] In the description of the present invention, features defined as "first", "second" and "third" may explicitly or implicitly include one or more such features, and are used to distinguish and describe features, without any distinction in order or importance.

[0087] In some embodiments, the battery assembly 300 includes a first output electrode and a second output electrode, each having different polarities, and each being electrically connected to the power distribution structure 200. Specifically, when the first output electrode is positive, the second output electrode is negative, and when the first output electrode is negative, the second output electrode is positive. Thus, when the first output electrode and the second output electrode are electrically connected to the power distribution structure 200, the power distribution structure 200 and the battery assembly 300 are electrically connected, thereby facilitating the use of the power distribution structure 200 to provide a stable power supply, enabling power distribution using the power distribution structure 200, and ensuring the safety of the battery assembly 300.

[0088] Therefore, the first output electrode and the second output electrode mentioned here can also be understood as the total positive electrode and the total negative electrode of the battery assembly 300.

[0089] In some embodiments, combined Figure 1 、 Figure 2 、 Figure 4 and Figure 5As shown, each battery pack 310 includes multiple battery cells 311, which extend along a first direction and are arranged sequentially in a second direction. The first output electrode and the second output electrode are located in different groups of battery cells 311 that are close to the power distribution structure 200. This not only enables electrical connection between the battery assembly 300 and the power distribution structure 200, but also effectively simplifies the routing path and routing length of the second electrical connector 420, reducing the cost of the second electrical connector 420. It also, to a certain extent, avoids the situation where two second electrical connectors 420 with a voltage differential are arranged parallel over a long distance. This simplifies the busbar routing of the battery pack 1000, improving the manufacturing cost, operational safety, and space utilization of the battery pack 1000.

[0090] In some embodiments, in the second direction, each battery pack 310 includes a first end close to the distribution structure 200 and a second end away from the distribution structure 200. The distribution structure 200 is electrically connected to the battery cell 311 located at the first end of the battery pack 310, thereby realizing the electrical connection between the distribution structure 200 and the battery cell 311 close to the distribution structure 200, reducing the difficulty of electrical connection between the battery assembly 300 and the distribution structure 200, and simplifying the routing path and routing length of the second electrical connector 420.

[0091] Of course, in some other embodiments, the power distribution structure 200 may also be electrically connected to the battery cell 311 away from the power distribution structure 200 , such as the power distribution structure 200 is electrically connected to the battery cell 311 located at the second end of the battery pack 310 .

[0092] It should be noted that by arranging multiple battery cells 311 in sequence along the second direction, the space in the accommodating cavity 110 can be rationally utilized, so that a larger number of battery cells 311 can be arranged in the accommodating cavity 110, thereby increasing the capacity of the battery pack 1000 and ensuring the working performance of the battery pack 1000 to a certain extent.

[0093] In a specific example, after the electrical connection between two adjacent battery groups 310 is completed, the distribution structure 200 is electrically connected to the battery cells 311 located in different groups and close to the distribution structure 200. While reducing the difficulty of electrical connection between the distribution structure 200 and the battery group 310, it can also effectively realize the electrical connection between the battery assembly 300 and the distribution structure 200, thereby ensuring the working performance of the battery pack 1000.

[0094] In some embodiments, combined Figure 2 、 Figure 3 、 Figure 5 and Figure 6As shown, two adjacent battery packs 310 are electrically connected via a battery cell 311 located at the second end of the battery pack 310. This allows the third electrical connector 430 to be arranged away from the second electrical connector 420 while achieving electrical connection between the two adjacent battery packs 310. This avoids the parallel arrangement of the second electrical connector 420 and the third electrical connector 430 to a certain extent, thereby improving the safety of the battery pack 1000.

[0095] In some embodiments, combined Figure 2 、 Figure 3 、 Figure 5 and Figure 6 As shown, the battery assembly 300 includes two groups of battery groups 310 spaced apart along a first direction, each group of battery groups 310 includes a plurality of battery cells 311 sequentially arranged along a second direction, and the plurality of battery cells 311 of each group of battery groups 310 are connected in series. After the series connection is completed, the two groups of battery groups 310 are connected in series, and then the two groups of battery groups 310 are electrically connected to the power distribution structure 200 respectively, so as to realize the electrical connection between the battery assembly 300 and the power distribution structure 200, thereby ensuring the working performance of the battery pack 1000.

[0096] Of course, in some other embodiments, the multiple battery cells 311 of each battery group 310 may also be connected in parallel, and two adjacent battery groups 310 may also be connected in parallel.

[0097] In some embodiments, combined Figure 7 、 Figure 8 and Figure 9 As shown, a first pole 3111 and a second pole 3112 are respectively formed at both ends of the battery cell 311 in the first direction, one of the first pole 3111 and the second pole 3112 forms the positive pole of the battery cell 311, and the other forms the negative pole of the battery cell 311. In two adjacent battery cells 311, the first pole 3111 of one battery cell 311 is electrically connected to the second pole 3112 of the other battery cell 311, so that the multiple battery cells 311 of each battery group 310 are connected in series.

[0098] Optionally, in two adjacent battery packs 310 , the first pole 3111 of one battery cell 311 in one battery pack 310 is electrically connected to the second pole 3112 of one battery cell 311 in the other battery pack 310 , thereby achieving series connection between the two adjacent battery packs 310 .

[0099] Optionally, the power distribution structure 200 is electrically connected to the first poles 3111 of the battery cells 311 in one of the battery packs 310, which are located near the power distribution structure 200, and to the second poles 3112 of the battery cells 311 in another of the battery packs 310, which are located near the power distribution structure 200, thereby achieving electrical connection between the battery assembly 300 and the power distribution structure 200 and ensuring the operating performance of the battery pack 1000. The first pole 3111 and the second pole 3112 are respectively formed as the first output electrode and the second output electrode mentioned above.

[0100] In some embodiments, the power distribution structure 200 includes a first connection portion and a second connection portion (not shown) spaced apart in a first direction. The first connection portion and the second connection portion are electrically connected to the first output electrode and the second output electrode, respectively. This enables electrical connection between the battery assembly 300 and the power distribution structure 200, reduces the difficulty of electrical connection between the battery assembly 300 and the power distribution structure 200, and ensures the operating performance of the battery pack 1000.

[0101] In some embodiments, the first connecting portion is electrically connected to the first pole 3111 of one of the battery cells 311 near the distribution structure 200 through a second electrical connector 420, and the second connecting portion is electrically connected to the second pole 3112 of another battery cell 311 near the distribution structure 200 through a second electrical connector 420, thereby realizing the electrical connection between the battery assembly 300 and the distribution structure 200.

[0102] Of course, in some other embodiments, the first connecting portion may be electrically connected to the second pole 3112 of one of the battery cells 311 near the distribution structure 200 through the second electrical connector 420, and the second connecting portion may be electrically connected to the first pole 3111 of another battery cell 311 near the distribution structure 200 through the second electrical connector 420. In this way, the first connecting portion and the second connecting portion may be electrically connected to the battery assembly 300 respectively.

[0103] In some embodiments, the first connection portion and the second connection portion are formed as a plug hole, a metal joint, etc., one end of the second electrical connector 420 is electrically connected to the plug hole or the metal joint, and the other end of the second electrical connector 420 is electrically connected to the first pole 3111 or the second pole 3112 of the battery cell 311 to achieve electrical connection between the battery assembly 300 and the distribution structure 200.

[0104] At the same time, by arranging the first connection portion and the second connection portion in the first direction at intervals, the second electrical connector 420 respectively connecting the first connection portion and the second connection portion can be prevented from contacting each other, thereby improving the safety of the battery pack 1000 .

[0105] In some embodiments, in the second direction, the first connection portion and the second connection portion are disposed close to the battery assembly 300. This facilitates the use of the first connection portion and the second connection portion to achieve electrical connection between the battery assembly 300 and the power distribution structure 200, thereby reducing the difficulty of electrical connection between the battery assembly 300 and the power distribution structure 200. Furthermore, the length of the second electrical connector 420 can be further shortened, simplifying the routing of the second electrical connector 420, and improving the manufacturing cost, safety, and space utilization of the battery pack 1000.

[0106] Of course, in some other embodiments, in the second direction, the first connecting portion and the second connecting portion may also be arranged away from the battery assembly 300 .

[0107] In some embodiments, combined Figure 1 、 Figure 2 and Figure 3 As shown, the first connection part and the second connection part are respectively located on both sides of the distribution structure 200 in the first direction, so as to realize that the first connection part and the second connection part are spaced apart in the first direction, and multiple second electrical connectors 420 are respectively located on both sides of the distribution structure 200 in the first direction, thereby avoiding contact between the second electrical connectors 420 respectively connecting the first connection part and the second connection part to a certain extent, thereby improving the safety of the battery pack 1000.

[0108] Of course, in some other embodiments, Figure 4 、 Figure 5 and Figure 6 As shown, the first connection portion and the second connection portion may also be located in the middle of the power distribution structure 200 in the first direction, so that the plurality of second electrical connectors 420 are located in the middle of the power distribution structure 200 in the first direction.

[0109] In some embodiments, combined Figure 1 、 Figure 2 、 Figure 4 and Figure 5 As shown, the accommodating chamber 110 includes a first accommodating chamber 111 and a second accommodating chamber 112 spaced apart in the second direction. The power distribution structure 200 is disposed in the first accommodating chamber 111, and the battery assembly 300 is disposed in the second accommodating chamber 112. A plug-in connector 120 is disposed on the side wall of the first accommodating chamber 111 in the first direction. By disposing the power distribution structure 200 in the first accommodating chamber 111 and the battery assembly 300 in the second accommodating chamber 112, the battery assembly 300 can be disposed on one side of the power distribution structure 200 in the second direction, thereby reducing the difficulty of electrically connecting the battery assembly 300 to the power distribution structure 200. Furthermore, the first accommodating chamber 111 and the second accommodating chamber 112 can be used to cooperate with each other to a certain extent to avoid the connection between the connector connecting the electrical connection end and the plug-in connector 120 and the battery assembly 300, thereby improving the safety of the battery pack 1000.

[0110] At the same time, by arranging the connector 120 on the side wall in the first direction of the first accommodating cavity 111, multiple connectors 120 can be arranged opposite the power distribution structure 200, which not only facilitates the electrical connection between the power distribution structure 200 and the connector 120, but also shortens the length of the first electrical connector 410, reduces the use cost of the first electrical connector 410, and avoids the electrical connection between the first electrical connector 410 and the battery assembly 300 to a certain extent, further improving the safety of the battery pack 1000.

[0111] In some embodiments, combined Figure 1 、 Figure 2 、 Figure 4 and Figure 5 As shown, a first partition beam 130 and a first wiring channel 140 are provided between the first accommodating cavity 111 and the second accommodating cavity 112, and the first wiring channel 140 connects the first accommodating cavity 111 and the second accommodating cavity 112. It can also be understood here that the first partition beam 130 is provided in the accommodating cavity 110, so that the accommodating cavity 110 is formed to include the first accommodating cavity 111 and the second accommodating cavity 112 spaced apart in the second direction, that is, the first partition beam 130 is provided between the first accommodating cavity 111 and the second accommodating cavity 112, so that the first accommodating cavity 111 and the second accommodating cavity 112 are independent of each other, thereby isolating the battery assembly 300 and the power distribution structure 200, avoiding direct contact between the battery assembly 300 and the power distribution structure 200 to form an electrical connection to a certain extent, and improving the safety of the battery pack 1000.

[0112] At the same time, by providing the first partition beam 130 , the difficulty of forming the first accommodating cavity 111 and the second accommodating cavity 112 can be reduced, and the structural strength of the battery pack 1000 can be improved.

[0113] In addition, by setting a first dividing beam 130 connecting the first accommodating cavity 111 and the second accommodating cavity 112, the second electrical connector 420 can be respectively arranged in the first accommodating cavity 111 and the second accommodating cavity 112, thereby facilitating the use of the second electrical connector 420 to realize the electrical connection between the battery assembly 300 and the distribution structure 200, thereby reducing the difficulty of the electrical connection between the battery assembly 300 and the distribution structure 200.

[0114] In some embodiments, combined Figure 1 、 Figure 2 、 Figure 4 and Figure 5As shown, the first wiring channel 140 is formed at at least one end of the first dividing beam 130, so that the first dividing beam 130 and the first wiring channel 140 can be simultaneously arranged between the first accommodating cavity 111 and the second accommodating cavity 112, and the difficulty of forming the first wiring channel 140 is reduced, thereby reducing the difficulty of electrical connection between the battery assembly 300 and the distribution structure 200.

[0115] In some embodiments, combined Figure 1 、 Figure 2 、 Figure 4 and Figure 5 As shown, at least one end of the first partition beam 130 is spaced apart from the side wall of the accommodating cavity 110, so as to form a first wiring channel 140 connecting the first accommodating cavity 111 and the second accommodating cavity 112 at at least one end of the first partition beam 130, thereby reducing the difficulty of forming the first wiring channel 140, and further reducing the difficulty of electrical connection between the battery assembly 300 and the power distribution structure 200.

[0116] In some embodiments, combined Figure 1 、 Figure 2 、 Figure 4 and Figure 5 As shown, both ends of the first partition beam 130 are formed with a first wiring channel 140 connecting the first accommodating cavity 111 and the second accommodating cavity 112, so that the second electrical connector 420 can selectively pass through one end of the first partition beam 130 to achieve electrical connection between the battery assembly 300 and the distribution structure 200.

[0117] Of course, in some other embodiments, the first wiring channel 140 communicating with the first accommodating cavity 111 and the second accommodating cavity 112 may be formed only at one end of the first dividing beam 130 .

[0118] It should be noted that when multiple first partition beams 130 are provided between the first accommodating cavity 111 and the second accommodating cavity 112 , the multiple first partition beams 130 can also be arranged to be spaced apart in the first direction so that a first wiring channel 140 is formed between two adjacent first partition beams 130 .

[0119] In other embodiments, a through hole communicating with the first accommodating cavity 111 and the second accommodating cavity 112 may be opened on the first dividing beam 130 to form the first wiring channel 140 .

[0120] That is, the first wiring channel 140 may be formed between two adjacent first dividing beams 130 , between the first dividing beam 130 and the sidewall of the accommodating cavity 110 , and / or on the first dividing beam 130 .

[0121] In some embodiments, combined Figure 4 and Figure 5As shown, the first wiring channel 140 is arranged near the middle of the accommodating cavity 110 in the first direction. In this way, when the second electrical connector 420 passing through the first wiring channel 140 is electrically connected to the first connection part and the second connection part located in the middle of the power distribution structure 200 (as shown in FIG. Figure 6 As shown), it is beneficial to shorten the length of the second electrical connector 420, reduce the use cost of the second electrical connector 420, and improve the use safety of the second electrical connector 420.

[0122] In some embodiments, combined Figure 1 、 Figure 2 、 Figure 4 and Figure 5 As shown, the battery assembly 300 includes at least two battery packs 310 arranged along a first direction, and includes a plurality of second accommodating cavities 112, which are spaced apart in the first direction, and correspond one-to-one with the plurality of battery packs 310. This not only allows the plurality of battery packs 310 to be arranged in the first direction, but also makes the plurality of battery packs 310 independent of each other, thereby isolating the plurality of battery packs 310, to a certain extent preventing the plurality of battery packs 310 from directly contacting and forming an electrical connection, thereby improving the safety of the battery pack 1000. Furthermore, the second accommodating cavities 112 can be used to limit the position of the battery packs 310, improving the positional stability of the battery packs 310 and ensuring the operating performance of the battery packs 310.

[0123] In some embodiments, combined Figure 1 、 Figure 2 、 Figure 4 and Figure 5 As shown, a second partition beam 150 and a second wiring channel 160 are provided between two adjacent second accommodating cavities 112, and the second wiring channel 160 connects the two adjacent second accommodating cavities 112. It can also be understood here that the second partition beam 150 is provided in the accommodating cavity 110 so that the accommodating cavity 110 is formed to include multiple second accommodating cavities 112 spaced apart in the first direction. That is, the second partition beam 150 is provided between two adjacent second accommodating cavities 112, so that the two adjacent second accommodating cavities 112 are independent of each other, thereby isolating the multiple battery packs 310 and reducing the difficulty of forming the multiple second accommodating cavities 112.

[0124] At the same time, by providing the second partition beam 150 , the difficulty of forming the plurality of second accommodating cavities 112 can be reduced, and the structural strength of the battery pack 1000 can be improved.

[0125] In addition, by setting up a second wiring channel 160 connecting two adjacent second accommodating cavities 112, the third electrical connector 430 can be respectively arranged in two adjacent second accommodating cavities 112, thereby facilitating the use of the third electrical connector 430 to achieve electrical connection of multiple battery packs 310, thereby reducing the difficulty of electrical connection of multiple battery packs 310.

[0126] In some embodiments, combined Figure 1 、 Figure 2 、 Figure 4 and Figure 5 As shown, the second wiring channel 160 is formed at at least one end of the second partition beam 150, so that the second partition beam 150 and the second wiring channel 160 can be simultaneously set between two adjacent second accommodating cavities 112, and the difficulty of forming the second wiring channel 160 is reduced, thereby reducing the difficulty of electrical connection of multiple battery packs 310.

[0127] In some embodiments, combined Figure 1 、 Figure 2 、 Figure 4 and Figure 5 As shown, at least one end of the second partition beam 150 is spaced apart from the side wall of the accommodating cavity 110 so as to form a second wiring channel 160 connecting two adjacent second accommodating cavities 112 at at least one end of the second partition beam 150, thereby reducing the difficulty of forming the second wiring channel 160 and further reducing the difficulty of electrical connection of multiple battery packs 310.

[0128] In some embodiments, second wiring channels 160 connecting two adjacent second accommodating cavities 112 are formed at both ends of the second partition beam 150, so that the third electrical connector 430 can selectively pass through one end of the second partition beam 150 to achieve electrical connection of multiple battery packs 310.

[0129] Of course, in some other embodiments, the second wiring channel 160 communicating with two adjacent second accommodating cavities 112 may be formed only at one end of the second dividing beam 150 .

[0130] It should be noted that when multiple second partition beams 150 are provided between two adjacent second accommodating cavities 112 , the multiple second partition beams 150 may also be arranged to be spaced apart in the second direction so as to form a second wiring channel 160 between two adjacent second partition beams 150 .

[0131] In other embodiments, a through hole communicating with two adjacent second accommodating cavities 112 may be opened on the second partition beam 150 to form a second wiring channel 160 .

[0132] That is, the second wiring channel 160 may be formed between two adjacent second partition beams 150 , between the second partition beam 150 and the sidewall of the accommodating cavity 110 , and / or on the second partition beam 150 .

[0133] In some embodiments, the battery pack 1000 also includes a sampling component (not shown in the figure), which is electrically connected to the battery pack 310 and the distribution structure 200 respectively, so as to realize low-voltage sampling of the voltage, temperature, etc. of the battery cell 311 using the sampling component, thereby ensuring the working performance of the battery pack 1000 and improving the safety of the battery pack 1000.

[0134] It is worth noting that the present application arranges the battery assembly 300 in the accommodating cavity 110 and is located on one side of the power distribution structure 200 in the second direction, and arranges multiple battery packs 310 to be arranged in sequence along the first direction. This is also beneficial to reducing the difficulty of electrical connection between the sampling assembly connected to the battery pack 310 and the power distribution structure 200, and is beneficial to shortening the extension length of the connector connected between the sampling assembly and the power distribution structure 200, which facilitates the manufacturing cost, use safety and space utilization of the battery pack 1000.

[0135] In some embodiments, the sampling component is a BIC (Battery Information Collector) circuit board, which has its own chip. The circuit board is directly soldered to the battery cell 311 through a nickel sheet. The BICs are connected in series through a daisy chain and connected to the distribution structure 200 through a wiring harness to achieve electrical connection between the sampling component and the battery pack 310 and the distribution structure 200 respectively, so as to facilitate the use of the sampling component to perform low-voltage sampling of the voltage, temperature, etc. of the battery cell 311, ensure the working performance of the battery pack 1000, and improve the safety of the battery pack 1000.

[0136] In some other embodiments, the sampling component is a flexible circuit board, which may be an FPC (Flexible Printed Circuit), an FDC (Flexible Display Circuit) or an FFC (Flexible Flat Cable), etc. The flexible circuit board does not have a chip. One end of the flexible circuit board is connected to the battery cell 311 through a nickel sheet and a connecting sheet, and the other end of the flexible circuit board is directly plugged into the power distribution structure 200. In this way, the sampling component can also be used to perform low-voltage sampling on the voltage, temperature, etc. of the battery cell 311.

[0137] It should be noted that when the battery cell 311 is formed as a blade battery, a larger number of blade batteries can be arranged in the accommodating cavity 110, and the positive and negative poles of the blade batteries are respectively located on both sides, so BIC is usually used for sampling; when the battery cell 311 is formed as a square shell battery, the number of square shell batteries arranged in the accommodating cavity 110 is limited, and the positive and negative poles of the square shell batteries are located on the same side, a flexible circuit board is usually used for sampling.

[0138] The following describes an electrical device according to an embodiment of the present utility model.

[0139] An electrical device according to an embodiment of the present invention includes a battery pack 1000 .

[0140] The battery pack 1000 is the aforementioned battery pack 1000 , and the specific structure of the battery pack 1000 is not described here in detail.

[0141] As can be seen from the above structure, the electric device of the embodiment of the present invention adopts the aforementioned battery pack 1000, thereby simplifying the structure of the electric device, reducing the weight and manufacturing cost of the electric device, and improving the safety of the electric device.

[0142] It should be noted that the electrical devices mentioned here may be but are not limited to mobile phones, tablets, laptops, electric toys, electric tools, battery vehicles, electric cars, ships, spacecraft, etc.

[0143] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0144] Other components of the battery pack 1000 and the electrical device having the same according to the embodiment of the present invention are well known to those skilled in the art and will not be described in detail here.

[0145] Throughout this specification, references to terms such as "embodiment" and "example" indicate that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, schematic representations of these 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 any one or more embodiments or examples.

[0146] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and purpose of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A battery pack, characterized in that: include: A housing, wherein a receiving cavity is formed in the housing, and the housing is provided with a plurality of connectors spaced apart in a first direction; A power distribution structure and a battery assembly, wherein the power distribution structure and the battery assembly are both arranged in the accommodating cavity, and the connector and the power distribution structure are both located on one side of the battery assembly in the second direction, the battery assembly is electrically connected to the power distribution structure, and the power distribution structure is provided with an electrical connection end, which is electrically connected to the connector, and the first direction and the second direction are arranged vertically.

2. The battery pack according to claim 1, characterized in that: The power distribution structure is provided with a plurality of electrical connection ends arranged along the first direction, and each of the electrical connection ends is electrically connected to the connector on the same side.

3. The battery pack according to claim 1, characterized in that: The battery assembly includes at least two battery groups arranged along the first direction, and two adjacent battery groups are electrically connected.

4. The battery pack according to claim 3, characterized in that: The battery assembly includes a first output electrode and a second output electrode, the first output electrode and the second output electrode have different polarities, and the first output electrode and the second output electrode are electrically connected to the power distribution structure respectively.

5. The battery pack according to claim 4, characterized in that: Each of the battery groups includes a plurality of battery cells, the plurality of battery cells extend along the first direction and are sequentially arranged in the second direction, and the first output electrode and the second output electrode are respectively located in different groups of battery cells close to the power distribution structure.

6. The battery pack according to claim 5, characterized in that: The power distribution structure includes a first connection portion and a second connection portion spaced apart in the first direction, and the first connection portion and the second connection portion are electrically connected to the first output electrode and the second output electrode, respectively.

7. The battery pack according to claim 6, characterized in that: In the second direction, the first connection portion and the second connection portion are disposed close to the battery assembly.

8. The battery pack according to claim 5, characterized in that: The accommodating cavity includes a first accommodating cavity and a second accommodating cavity spaced apart in the second direction, the power distribution structure is arranged in the first accommodating cavity, the battery assembly is arranged in the second accommodating cavity, and the connector is arranged on the side wall of the first accommodating cavity in the first direction.

9. The battery pack according to claim 8, characterized in that: A first partition beam and a first wiring channel are provided between the first accommodating cavity and the second accommodating cavity, and the first wiring channel connects the first accommodating cavity and the second accommodating cavity.

10. The battery pack according to claim 9, characterized in that: The first wiring channel is formed at at least one end of the first partition beam; and / or, The first wiring channel is disposed close to the middle of the accommodating cavity in the first direction.

11. The battery pack according to claim 8, characterized in that: The second accommodating chambers include a plurality of second accommodating chambers, the plurality of second accommodating chambers are arranged at intervals in the first direction, and the plurality of second accommodating chambers correspond one-to-one to the plurality of battery packs.

12. The battery pack according to claim 11, characterized in that: A second partition beam and a second wiring channel are provided between two adjacent second accommodating cavities, and the second wiring channel communicates with the two adjacent second accommodating cavities.

13. An electrical device, characterized in that: Comprising a battery pack according to any one of claims 1-12.

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