Battery pack and electric device

Abstract

A battery pack and an electric device. The battery pack (100) comprises a case (10), terminal posts (20), dividing assemblies (30), electrode assemblies (40) and an electrolyte, wherein a sealing cavity (11) is defined in the case (10); the terminal posts (20) are arranged in the case (10); the dividing assemblies (30) are arranged in the sealing cavity (11) and divide the sealing cavity (11) into a plurality of independent mounting cavities (12); the electrode assemblies (40) are arranged in at least some of the mounting cavities (12); the electrode assemblies (40) are electrically connected to the terminal posts (20); and the electrolyte fills the mounting cavities (12) in which the electrode assemblies (40) are placed. By means of providing the dividing assemblies (30) in the case (10), the sealing cavity (11) can be divided into the plurality of independent mounting cavities (12), wherein the electrode assemblies (40) are arranged in at least some of the mounting cavities (12), and the electrolyte is placed in the mounting cavities (12) in which the electrode assemblies (40) are arranged, then the space in the case (10) can be fully utilized, so that the electrolyte and the electrode assemblies (40) can fully utilize the space in the mounting cavities (12), thus improving the utilization rate of space in the battery pack (100) and also improving the grouping efficiency of the battery pack (100).

Description

Battery packs and electrical equipment

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to Chinese patent application No. 202322447354.8, filed on September 8, 2023, entitled “Battery Pack and Electrical Equipment,” the entire contents of which are incorporated herein by reference. Technical Field

[0003] The present application relates to the field of battery technology, and in particular to a battery pack and electrical equipment. Background Art

[0004] This section merely provides background information related to the present disclosure and is not necessarily prior art.

[0005] In order to improve the energy density of the battery pack, it is necessary to fully utilize the space inside the battery pack box. However, in the prior art, the space utilization rate inside the battery pack is relatively low, resulting in low battery pack grouping efficiency.

[0006] Summary of the Invention

[0007] In view of the above problems, the present application provides a battery pack and an electrical device, which solves the problem of low battery pack grouping efficiency caused by relatively low space utilization inside the battery pack in the prior art.

[0008] A first aspect of the present application provides a battery pack, comprising a box body, wherein a sealed cavity is defined within the box body;

[0009] Pole, the pole is arranged on the box;

[0010] A partition assembly is provided in the sealed cavity and divides the sealed cavity into a plurality of independent installation cavities;

[0011] An electrode assembly, at least part of the mounting cavity being provided with the electrode assembly, the electrode assembly being electrically connected to the pole; and

[0012] Electrolyte, the electrolyte is filled in the installation cavity where the electrode assembly is placed.

[0013] The battery pack in the embodiment of the present application can divide the sealed cavity into multiple independent installation cavities by providing a partition assembly in the box, wherein at least part of the installation cavity is provided with an electrode assembly, and the installation cavity provided with the electrode assembly is filled with an electrolyte. In this way, the space in the box can be fully utilized, so that the electrolyte and the electrode assembly can fully utilize the space in the installation cavity, thereby improving the utilization rate of the space in the battery pack and thus improving the grouping efficiency of the battery pack.

[0014] In some embodiments of the present application, the partition assembly includes at least one first partition, which is disposed within the housing along a first direction, where the first direction is the length or width of the housing. In embodiments of the present application, by including the partition assembly in the housing along the first direction, the first partition can be used to separate the sealed cavity into at least two independent mounting cavities, thereby facilitating full utilization of each mounting cavity. Furthermore, the first partition can be used to form a housing for the battery cell, thereby reducing the space occupied by the housing.

[0015] In some embodiments of the present application, the partition assembly further includes at least one second partition plate, which is disposed within the housing along a second direction intersecting the first direction. In embodiments of the present application, by including at least one second partition plate within the housing along the second direction, the first and second partition plates can be used to separate the sealed cavity into multiple independent mounting cavities, facilitating full utilization of each mounting cavity and improving the energy density of the battery pack.

[0016] In some embodiments of the present application, the housing includes a first cover and a second cover for sealing the housing from opposite sides, and a pole is provided on a side of at least one of the first cover and the second cover facing the sealed cavity. In the embodiments of the present application, by providing the first and second covers in opposing positions and providing the pole on a side of at least one of the first and second covers facing the sealed cavity, energy can be output outward through the pole.

[0017] In some embodiments of the present application, the box further comprises a first side panel and a second side panel disposed opposite each other, the first side panel and the second side panel being disposed at both ends of the box in a first direction, respectively, and at least one of the first side panel and the second side panel being provided with a mounting portion. In the embodiments of the present application, by disposing the first side panel and the second side panel at both ends of the box in the first direction and providing the mounting portion on at least one of the first side panel and the second side panel, the mounting portion can be used to install and secure the battery pack.

[0018] In some embodiments of the present application, a mounting portion is provided on the edge of the first cover and / or the second cover. In the embodiments of the present application, by providing the mounting portion on the edge of the first cover and / or the second cover, the mounting portion and the first cover and / or the second cover can be integrated together, facilitating processing.

[0019] In some embodiments of the present application, the box further includes a third side panel and a fourth side panel disposed opposite each other, the third side panel and the fourth side panel being disposed at both ends of the box in the second direction, respectively, and the first side panel, the second side panel, the third side panel, the fourth side panel, the first cover, and the second cover together form a sealed cavity. In the embodiments of the present application, the box can be formed into a rectangular structure by enclosing the first side panel, the second side panel, the third side panel, the fourth side panel, the first cover, and the second cover together to form a sealed cavity, which is simple in structure and easy to implement.

[0020] In some embodiments of the present application, at least one of the first cover and the second cover is sealed to the first side plate, the second side plate, the third side plate, and the fourth side plate. In the embodiments of the present application, by sealing at least one of the first cover and the second cover to the first side plate, the second side plate, the third side plate, and the fourth side plate, the sealed cavity can be sealed, thereby reducing the probability of electrolyte leakage in the sealed cavity.

[0021] In some embodiments of the present application, the box further comprises a baffle, and the first, second, third, and fourth side panels, the baffle, the first cover, and the second cover together form a receiving cavity. In the embodiments of the present application, by providing a baffle and enclosing the baffle with the first and second covers and one of the first, second, third, and fourth side panels to form a receiving cavity, the electrical components of the battery pack can be placed in the receiving cavity, thereby realizing the function of the battery pack.

[0022] In some embodiments of the present application, the battery pack further includes a heat exchange component, which is disposed on the housing or inside the partition assembly. The embodiments of the present application provide heat exchange for the battery pack by disposing the heat exchange component, and disposing the heat exchange component on the housing or inside the partition assembly.

[0023] In some embodiments of the present application, the heat exchange assembly includes a heat exchange plate, and the heat exchange plate is attached to the side of at least one of the first cover and the second cover facing away from the sealed cavity. In the embodiments of the present application, by providing the heat exchange plate and attaching the side of at least one of the first cover and the second cover facing away from the sealed cavity to the heat exchange plate, heat exchange can be achieved within the battery pack through the heat exchange plate.

[0024] In some embodiments of the present application, an insulating layer is provided on at least a portion of the surface of the partition assembly and the inner surface of the box, or both the partition assembly and the box are insulating members. In some embodiments of the present application, by providing an insulating layer on at least a portion of the surface of the partition assembly and the inner surface of the box, or by providing both the partition assembly and the box as insulating members, the insulation performance of the box can be improved.

[0025] In some embodiments of the present application, the battery pack includes a plurality of electrode assemblies and a plurality of poles corresponding to the plurality of electrode assemblies, and the plurality of poles are provided on a side of at least one of the first cover and the second cover facing the sealed cavity. In the embodiments of the present application, by providing the plurality of poles on a side of at least one of the first cover and the second cover facing the sealed cavity, the plurality of poles can be integrated to facilitate installation of the plurality of poles. The second aspect of the present application proposes an electrical device including the battery pack mentioned in the above embodiment.

[0026] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific embodiments of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiments below. The accompanying drawings are for illustration purposes only and are not to be considered as limiting the present application. The same reference numerals are used throughout the drawings to denote the same components. In the drawings:

[0028] FIG1 is a schematic structural diagram of an electrical device provided in some embodiments of the present application;

[0029] FIG2 is a schematic structural diagram of a battery pack provided in some embodiments of the present application;

[0030] FIG3 is a schematic diagram of a partial enlarged structure of a portion A of the battery pack shown in FIG2 ;

[0031] FIG4 is a schematic structural diagram of a battery pack provided in some other embodiments of the present application;

[0032] FIG5 is a schematic diagram of a partially enlarged structure of a portion B of the battery pack shown in FIG4 .

[0033] The figures are marked as follows: 100, battery pack; 200, electrical equipment; 300, controller; 400, motor; 10, box; 11, sealed cavity; 12, installation cavity; 13, first cover; 14, second cover; 15, first side plate; 16, second side plate; 17, third side plate; 18, fourth side plate; 19, baffle; 191, first interface; 192, second interface; 20, pole; 30, partition assembly; 31, first partition; 32, second partition; 40, electrode assembly; 50, mounting part; 60, heat exchange assembly; 61, heat exchange plate; 70, accommodating cavity; 80, high-voltage box; 90, busbar; XX, first direction; YY, second direction. Specific embodiments

[0034] The following embodiments of the technical solution of the present application will be described in detail with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application and are therefore only examples and are not intended to limit the scope of protection of the present application.

[0035] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned figure descriptions are intended to cover non-exclusive inclusions.

[0036] In the description of the embodiments of this application, the technical terms "first" and "second" are used only to distinguish different objects and should not be understood to indicate or imply relative importance or implicitly specify the quantity, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, the meaning of "plurality" is more than two, unless otherwise clearly and specifically defined.

[0037] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0038] In the description of the embodiments of this application, the term "and / or" is simply a description of the association relationship between associated objects, indicating that three relationships can exist. For example, A and / or B can represent the following three situations: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this document generally indicates that the associated objects are in an "or" relationship.

[0039] In the description of the embodiments of the present application, the term "multiple" refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).

[0040] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present application 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 cannot be understood as a limitation on the embodiments of the present application.

[0041] In the description of the embodiments of the present application, unless otherwise expressly specified or limited, technical terms such as "installed," "connected," "connected," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; internal connections between two components or interactions between two components. Those skilled in the art can understand the specific meanings of the above terms in the embodiments of the present application based on specific circumstances.

[0042] Currently, market developments indicate that battery packs are becoming increasingly widespread. They are used not only in energy storage systems such as hydropower, thermal, wind, and solar power plants, but also in electric vehicles like electric bicycles, electric motorcycles, and electric cars, as well as in military equipment and aerospace. As battery pack applications continue to expand, market demand is also growing.

[0043] The battery packs involved in the embodiments of the present application can be used, but are not limited to, in electrical equipment such as vehicles, ships, or aircraft. A power supply system comprising the battery cells, battery packs, etc. involved in the present application can be used to form the electrical equipment.

[0044] In the embodiments of the present application, the electrical devices that utilize the battery pack as a power source may include, but are not limited to, mobile phones, tablets, laptop computers, electric toys, electric tools, battery-powered vehicles, electric cars, ships, spacecraft, etc. The electric toys may include fixed or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, etc. The spacecraft may include airplanes, rockets, space shuttles, and spacecraft, etc.

[0045] It should be understood that the technical solutions described in the embodiments of the present application are not limited to the battery packs and electrical equipment described above, but can also be applied to all batteries including boxes and electrical equipment using batteries.

[0046] A battery pack typically consists of a box housing the battery cells. To increase the energy density of a battery pack, the space within the box must be fully utilized. However, current battery pack space utilization is relatively low, resulting in low pack assembly efficiency.

[0047] In order to improve the space utilization inside the battery pack, the present application proposes a battery pack, in which the sealed cavity of the box is divided into multiple independent installation cavities by using a partition assembly, and an electrode assembly is arranged in at least part of the installation cavity, the electrode assembly is electrically connected to the pole, and an electrolyte is also arranged in the installation cavity where the electrode assembly is arranged. This allows the electrolyte and the electrode assembly to fully utilize the space in the installation cavity, thereby improving the utilization of the space inside the battery pack.

[0048] The battery pack structure in this application will be described in detail below with reference to the accompanying drawings.

[0049] Referring to Figure 1, Figure 1 is a schematic diagram of the structure of the electric device provided in some embodiments of the present application. A battery pack 100 is provided inside the electric device 200, and the battery pack 100 can be provided at the bottom, head, or tail of the electric device 200. The battery pack 100 can be used to power the electric device 200. For example, the battery pack 100 can serve as an operating power source for the electric device 200. The electric device 200 may also include a controller 300 and a motor 400. The controller 300 is used to control the battery pack 100 to power the motor 400, for example, for starting, navigating, and driving the electric device 200.

[0050] In some embodiments of the present application, the battery pack 100 can not only serve as an operating power source for the electrical device 200, but also serve as a driving power source for the electrical device 200, replacing or partially replacing fuel or natural gas to provide driving power for the electrical device 200.

[0051] An embodiment of the present application proposes a battery pack 100, as shown in Figures 2 to 4, the battery pack 100 includes a case 10, a pole 20, a separator assembly 30, an electrode assembly 40 and an electrolyte. A sealed cavity 11 is defined in the case 10, the pole 20 is arranged in the case 10, the separator assembly 30 is arranged in the sealed cavity 11 and divides the sealed cavity 11 into a plurality of independent installation cavities 12, at least part of the installation cavity 12 is provided with an electrode assembly 40, and the electrode assembly 40 is electrically connected to the pole 20; the electrolyte is filled in the installation cavity 12 where the electrode assembly 40 is placed.

[0052] It should be noted that the housing 10 is generally rectangular, and the battery cells are placed inside the housing 10. The electrode assembly 40 may be cylindrical, flat, rectangular, or other shapes, and the embodiments of the present application are not limited thereto. The present application uses the rectangular electrode assembly 40 as an example for description.

[0053] The battery pack 100 referred to in the embodiments of this application refers to a single physical module that includes one or more electrode assemblies 40 to provide higher voltage and capacity. For example, the battery pack 100 referred to in this application includes a housing 10 for enclosing the one or more electrode assemblies 40. The housing 10 prevents liquids or other foreign matter from affecting the charging or discharging of the electrode assemblies 40.

[0054] The electrode assembly 40 of the embodiment of the present application is composed of a positive electrode sheet, a negative electrode sheet and a separator. No electrolyte is added to the electrode assembly 40, so that the electrode assembly 40 can cooperate with the electrolyte in the installation cavity 12 to achieve charging or anti-static.

[0055] The battery pack 100 in the embodiment of the present application can divide the sealed cavity 11 into multiple independent installation cavities 12 by setting a partition assembly 30 in the box body 10, wherein the electrode assembly 40 is set in at least part of the installation cavity 12, and the electrolyte is placed in the installation cavity 12 where the electrode assembly 40 is set. In this way, the space in the box body 10 can be fully utilized, so that the electrolyte and the electrode assembly 40 can fully utilize the space in the installation cavity 12, thereby improving the utilization rate of the space in the battery pack 100 and thus improving the grouping efficiency of the battery pack 100.

[0056] Normally, a battery cell with a shell is placed in the box body 10. However, in the present application, the electrode assembly 40 and the electrolyte are placed directly in the mounting cavity 12, which can reduce the space occupied by the shell and reduce the gap between two adjacent battery cells, thereby improving the energy density of the battery pack 100 and thus improving the grouping efficiency of the battery pack 100.

[0057] In some embodiments, as shown in Figures 2 to 4 , the partition assembly 30 includes at least one first partition 31. The first partition 31 is disposed within the housing 10 along a first direction XX, where the first direction XX is the length or width of the housing 10. In Figure 2 , the first direction XX is the width of the housing 10. The number of first partitions 31 can be one or more, with multiple first partitions 31 spaced apart to divide the sealed cavity 11 into multiple elongated mounting cavities 12.

[0058] In an embodiment of the present application, the partition assembly 30 includes at least one first partition 31 arranged in the box body 10 along the first direction XX. The sealed cavity 11 can be divided into at least two independent installation cavities 12 by the first partition 31, so that each installation cavity 12 can be fully utilized. The first partition 31 can also be used to form the shell of the battery cell, thereby reducing the space occupied by the shell of the battery cell.

[0059] In some embodiments, the partition assembly 30 further includes at least one second partition plate 32 . The second partition plate 32 is disposed in the box body 10 along a second direction YY, and the second direction YY intersects with the first direction XX.

[0060] The second direction YY and the first direction XX are generally perpendicular to each other, but may also be arranged at other angles, such as 85 degrees or 95 degrees. The number of second separators 32 may also be multiple. The battery pack 100 can, under the combined action of the first separator 31 and the second separator 32, separate the sealed cavity 11 into multiple rectangular mounting cavities 12. Each mounting cavity 12 can contain an electrode assembly 40 and an electrolyte, thereby increasing the energy density of the battery pack 100.

[0061] In the embodiment of the present application, the partition assembly 30 further includes at least one second partition 32, and the second partition 32 is arranged in the box body 10 along the second direction YY. Then, the sealed cavity 11 can be divided into multiple independent installation cavities 12 by the first partition 31 and the second partition 32, so as to make full use of each installation cavity 12 and improve the energy density of the battery pack 100.

[0062] In some embodiments, as shown in Figures 2 and 4, the housing 10 includes a first cover 13 and a second cover 14 for enclosing the housing 10 from opposite sides. A pole 20 is provided on the side of at least one of the first cover 13 and the second cover 14 facing the sealed cavity 11. There are typically two poles 20, one positive pole 20 and the other negative pole 20, which can be provided on both the first cover 13 and the second cover 14. The provision of the poles 20 will not be further described herein. The first cover 13 and the second cover 14 are both plate-like structures, provided at the upper and lower ends of the housing 10, respectively.

[0063] In the embodiment of the present application, a first cover 13 and a second cover 14 are provided, and a pole 20 is provided on a side of at least one of the first cover 13 and the second cover 14 facing the sealed cavity 11 , so that energy can be output outward through the pole 20 .

[0064] In some embodiments, the box body 10 further includes a first side panel 15 and a second side panel 16 that are arranged opposite to each other. The first side panel 15 and the second side panel 16 are respectively arranged at both ends of the box body 10 in the first direction XX, and a mounting portion 50 is provided on at least one of the first side panel 15 and the second side panel 16.

[0065] It should be noted that the first side panel 15 and the second side panel 16 here are both plate-like structures. The mounting portion 50 can be arranged perpendicular to the first side panel 15, and the mounting portion 50 can also be arranged perpendicular to the second side panel 16. There are usually two mounting portions 50, and the two mounting portions 50 are respectively arranged on the first side panel 15 and the second side panel 16, so that the battery pack 100 can be fixed on the box body 10 through the mounting portion 50.

[0066] The mounting portion 50 is usually provided with a mounting hole (not shown), and the mounting portion 50 can be connected to the electrical device 200 by using connecting members such as bolts.

[0067] In the embodiment of the present application, by arranging the first side panel 15 and the second side panel 16 at both ends of the box body 10 in the first direction XX, and providing a mounting portion 50 on at least one of the first side panel 15 and the second side panel 16, the battery pack 100 can be installed and fixed through the mounting portion 50.

[0068] In some embodiments, as shown in FIG4 , the mounting portion 50 may also be disposed on the edge of the first cover 13 and / or the second cover 14 to secure the battery pack 100. In FIG4 , the mounting portion 50 is disposed on the edge of the second cover 14 and does not affect the cooling of the battery pack 100.

[0069] In some embodiments of the present application, as shown in Figures 2 to 4, the box body 10 also includes a third side panel 17 and a fourth side panel 18 arranged opposite to each other, and the third side panel 17 and the fourth side panel 18 are respectively arranged at both ends of the box body 10 in the second direction YY, and the first side panel 15, the second side panel 16, the third side panel 17, the fourth side panel 18, the first cover body 13 and the second cover body 14 together form a sealed cavity 11.

[0070] Typically, the first side panel 15 , the second side panel 16 , the third side panel 17 and the fourth side panel 18 are made by an integral molding process, such as injection molding or casting, which can achieve a sealing effect.

[0071] In the embodiment of the present application, the first side panel 15, the second side panel 16, the third side panel 17, the fourth side panel 18, the first cover 13 and the second cover 14 are combined to form a sealed cavity 11, so that the box body 10 can be a rectangular structure with a simple structure and easy implementation.

[0072] In some embodiments, as shown in FIG. 2 to FIG. 4 , at least one of the first cover 13 and the second cover 14 is sealed to the first side plate 15 , the second side plate 16 , the third side plate 17 , and the fourth side plate 18 .

[0073] The first cover body 13 and the second cover body 14 here can respectively adopt a sealed connection structure with the first side panel 15, the second side panel 16, the third side panel 17 and the fourth side panel 18, such as welding, bonding, screwing or interference fit structure to achieve connection, and use sealant or foam for sealing.

[0074] The embodiment of the present application can achieve sealing of the sealed cavity 11 and reduce the probability of electrolyte leakage in the sealed cavity 11 by sealingly connecting at least one of the first cover body 13 and the second cover body 14 to the first side plate 15, the second side plate 16, the third side plate 17, and the fourth side plate 18.

[0075] In some embodiments, as shown in Figures 2 to 4, the box body 10 also includes a baffle 19, and the baffle 19, the first cover body 13, the second cover body 14 and one of the first side plate 15, the second side plate 16, the third side plate 17 and the fourth side plate 18 together form a accommodating cavity 70.

[0076] In this embodiment, the baffle 19 and the fourth side plate 18 together form a receiving cavity 70. The baffle 19 is a rectangular structure with an opening, and can form a trapezoidal receiving cavity 70 with openings at both ends for the fourth side plate 18. The receiving cavity 70 is used to house electrical components such as a high-voltage box 80. Of course, the receiving cavity 70 can also be formed by the baffle 19 and the third side plate 17 together, but this example is not further explained here.

[0077] In the embodiment of the present application, a baffle 19 is provided, and the baffle 19 and one of the first cover body 13, the second cover body 14, the first side plate 15, the second side plate 16, the third side plate 17 and the fourth side plate 18 are combined to form a receiving cavity 70. The electrical components of the battery pack 100 can be placed in the receiving cavity 70 to realize the functions of the battery pack 100.

[0078] In some embodiments, to output the functions of the battery pack 100, a first interface 191 and a second interface 192 are provided on the baffle 19. There are two first interfaces 191, each for passing a high-voltage line through the first interface 191 and then connecting to the high-voltage box 80. There is only one second interface 192, for outputting a low-voltage line from the second interface 192, to facilitate monitoring of parameters of the battery pack 100, such as temperature or other parameters.

[0079] It should be noted that the high-voltage box 80 here can be arranged in the accommodating cavity 70 by using a structure such as bolts or snaps, which will not be further explained here.

[0080] In some embodiments, the battery pack 100 further includes a busbar 90 and a tab (not shown), wherein the tab is arranged on the busbar 90 and is respectively connected to the pole 20 and the high-voltage box 80, so that the energy of the battery pack 100 can be output through the high-voltage box 80.

[0081] In some embodiments, as shown in Figures 2 and 4, the battery pack 100 also includes a heat exchange component 60, which is disposed on the box body 10. In Figure 2, the heat exchange component 60 is independently disposed and can be connected to the first cover body 13 of the box body 10 to achieve cooling of the battery pack 100, and can be a cooling plate structure.

[0082] The heat exchange assembly 60 includes a heat exchange plate 61. The side of at least one of the first cover 13 and the second cover 14 facing away from the sealed cavity 11 is attached to the heat exchange plate 61. The heat exchange plate 61 can be a water-cooled plate or other structures.

[0083] In the embodiment of the present application, a heat exchange plate 61 is provided, and at least one of the first cover 13 and the second cover 14 is attached to the heat exchange plate 61 on a side facing away from the sealed cavity 11 , so that heat exchange of the battery pack 100 can be achieved through the heat exchange plate 61 .

[0084] Alternatively, the heat exchange assembly 60 can be integrated within the partition assembly 30, forming cooling channels within the partition assembly 30 to cool the battery pack 100. In Figure 4, multiple cooling channels are integrated within the first partition 31, with a liquid inlet and outlet located at each end of the first partition 31. In this embodiment, the mounting portion 50 is positioned differently, being positioned at both ends of the second cover 14 in the first direction XX.

[0085] It should be noted that the cooling channels here are interconnected, that is, the interiors of different first partitions 31 are interconnected.

[0086] The embodiment of the present application provides a heat exchange component 60 , and the heat exchange component 60 is provided on the box body 10 or inside the partition component 30 , thereby cooling the battery pack 100 and reducing the temperature of the battery pack 100 .

[0087] In some embodiments, at least a portion of the surface of the partition assembly 30 and the inner surface of the box body 10 are provided with an insulating layer, or the partition assembly 30 and the box body 10 are both insulating members.

[0088] The separator assembly 30 can be made of metal and formed through processes such as extrusion, casting, and machining to improve its strength. However, to ensure the insulation performance of the separator assembly 30, an insulating layer must be sprayed on the surface of the separator assembly 30 facing the electrode assembly 40 and the electrolyte. This can be achieved by spraying the insulating layer on the outer surface of the separator assembly 30. Of course, the separator assembly 30 can also be made of a material with insulating properties, such as plastic.

[0089] Similarly, for the box body 10, an insulating layer can be provided on the inner surface of the box body 10, or the box body 10 can be directly made of a plastic material with insulating properties, so that a pressure-resistant and sealing sealed cavity 11 can be formed using the partition assembly 30 and the box body 10.

[0090] In the embodiments of the present application, the insulation performance of the box body 10 can be improved by providing an insulation layer on at least part of the surface of the partition assembly 30 and the inner surface of the box body 10, or by configuring both the partition assembly 30 and the box body 10 as insulation parts.

[0091] The battery pack 100 includes a plurality of electrode assemblies 40 and a plurality of poles 20 corresponding to the plurality of electrode assemblies 40 . The plurality of poles 20 are provided on a side of at least one of the first cover 13 and the second cover 14 facing the sealed cavity 11 .

[0092] In the embodiment of the present application, by arranging multiple poles 20 on the side of at least one of the first cover body 13 and the second cover body 14 facing the sealed cavity 11, the multiple poles 20 can be integrated, which facilitates the installation of the multiple poles 20, and facilitates the connection of the multiple poles 20 with the corresponding bars, and facilitates the connection with the high-voltage box 80.

[0093] The embodiments of the present application further provide an electric device 200 , which includes the battery pack 100 mentioned in the above embodiments.

[0094] The electrical equipment 200 here can be the vehicle and other products mentioned above, and will not be repeated here.

[0095] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific embodiments of the present application are listed below.

[0096] The battery pack 100 includes a case 10, a pole 20, a separator assembly 30, an electrode assembly 40 and an electrolyte. A sealed cavity 11 is defined in the case 10. The pole 20 is arranged in the case 10. The separator assembly 30 is arranged in the sealed cavity 11 and divides the sealed cavity 11 into multiple independent installation cavities 12. At least part of the installation cavity 12 is provided with an electrode assembly 40, and the electrode assembly 40 is electrically connected to the pole 20; the electrolyte is filled in the installation cavity 12 where the electrode assembly 40 is placed.

[0097] Furthermore, the partition assembly 30 includes at least one first partition plate 31 . The first partition plate 31 is disposed in the box body 10 along a first direction XX. The first direction XX is a length direction or a width direction of the box body 10 .

[0098] Furthermore, the partition assembly 30 further includes at least one second partition plate 32 . The second partition plate 32 is disposed in the box body 10 along a second direction YY, and the second direction YY intersects with the first direction XX.

[0099] Furthermore, the box body 10 includes a first cover 13 and a second cover 14 for closing the box body 10 from opposite sides, and at least one of the first cover 13 and the second cover 14 is provided with a pole 20 .

[0100] Furthermore, the box body 10 also includes a first side panel 15 and a second side panel 16 that are arranged opposite to each other. The first side panel 15 and the second side panel 16 are respectively arranged at both ends of the box body 10 in the first direction XX, and a mounting portion 50 is provided on at least one of the first side panel 15 and the second side panel 16.

[0101] Furthermore, a mounting portion 50 is provided on the edge of the first cover 13 and / or the second cover 14 .

[0102] Furthermore, the box body 10 also includes a third side panel 17 and a fourth side panel 18 arranged opposite to each other, and the third side panel 17 and the fourth side panel 18 are respectively arranged at both ends of the box body 10 in the second direction YY, and the first side panel 15, the second side panel 16, the third side panel 17, the fourth side panel 18, the first cover body 13 and the second cover body 14 together form a sealed cavity 11.

[0103] Furthermore, at least one of the first cover 13 and the second cover 14 is sealed to the first side plate 15 , the second side plate 16 , the third side plate 17 , and the fourth side plate 18 .

[0104] Furthermore, the box body 10 further includes a baffle 19 , one of the first side plate 15 , the second side plate 16 , the third side plate 17 and the fourth side plate 18 , the baffle 19 , the first cover 13 and the second cover 14 together form an accommodating cavity 70 .

[0105] Furthermore, the battery pack 100 further includes a heat exchange assembly 60 , which is disposed on the box body 10 or inside the partition assembly 30 .

[0106] The heat exchange assembly 60 includes a heat exchange plate 61 , and a side of at least one of the first cover 13 and the second cover 14 facing away from the sealed cavity 11 is in contact with the heat exchange plate 61 .

[0107] Furthermore, at least a portion of the surface of the partition assembly 30 and the inner surface of the box body 10 are provided with an insulating layer, or the partition assembly 30 and the box body 10 are both insulating parts.

[0108] Furthermore, the battery pack 100 includes a plurality of electrode assemblies 40 and a plurality of poles 20 corresponding to the plurality of electrode assemblies 40 , and a plurality of poles 20 are provided on a side of at least one of the first cover 13 and the second cover 14 facing the sealed cavity 11 .

[0109] The above description is merely a preferred embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present application should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.

[0110] .

Claims

1. A battery pack, wherein: The battery pack comprises: A box body, wherein a sealed cavity is defined in the box body; A pole, wherein the pole is arranged on the box; A partition assembly, wherein the partition assembly is disposed in the sealed cavity and divides the sealed cavity into a plurality of independent installation cavities; an electrode assembly, wherein the electrode assembly is disposed in at least a portion of the mounting cavity and is electrically connected to the pole; and An electrolyte is filled in the installation cavity where the electrode assembly is placed.

2. The battery pack according to claim 1, wherein: The partition assembly includes at least one first partition plate, and the first partition plate is arranged in the box body along a first direction, and the first direction is the length direction or the width direction of the box body.

3. The battery pack according to claim 1 or 2, wherein: The partition assembly further includes at least one second partition plate, and the second partition plate is disposed in the box body along a second direction, and the second direction intersects with the first direction.

4. The battery pack according to any one of claims 1 to 3, wherein: The box body comprises a first cover body and a second cover body for closing the box body from opposite sides, and the pole is disposed on a side of at least one of the first cover body and the second cover body facing the sealed cavity.

5. The battery pack according to any one of claims 1 to 4, wherein: The box body further includes a first side plate and a second side plate which are arranged opposite to each other. The first side plate and the second side plate are respectively arranged at two ends of the box body in the first direction, and a mounting portion is provided on at least one of the first side plate and the second side plate.

6. The battery pack according to any one of claims 1 to 4, wherein: A mounting portion is disposed at an edge of the first cover body and / or the second cover body.

7. The battery pack according to any one of claims 1 to 4, wherein: The box body also includes a third side plate and a fourth side plate that are arranged opposite to each other, and the third side plate and the fourth side plate are respectively arranged at both ends of the box body in the second direction, and the first side plate, the second side plate, the third side plate, the fourth side plate, the first cover body and the second cover body together enclose the sealed cavity.

8. The battery pack according to claim 7, wherein: At least one of the first cover body and the second cover body is sealed and connected to the first side plate, the second side plate, the third side plate, and the fourth side plate.

9. The battery pack according to claim 7, wherein: The box body further includes a baffle, and one of the first side plate, the second side plate, the third side plate and the fourth side plate, the baffle, the first cover body and the second cover body together form an accommodating cavity.

10. The battery pack according to any one of claims 2 to 9, wherein: The battery pack further includes a heat exchange component, which is disposed on the box body or inside the partition component.

11. The battery pack according to claim 10, wherein: The heat exchange assembly includes a heat exchange plate, and a side of at least one of the first cover body and the second cover body facing away from the sealed cavity is in contact with the heat exchange plate.

12. The battery pack according to any one of claims 1 to 9, wherein: At least part of the surface of the partition assembly and the inner surface of the box body are provided with an insulating layer, or both the partition assembly and the box body are insulating parts.

13. The battery pack according to any one of claims 4 to 9, wherein: The battery pack includes a plurality of the electrode assemblies and a plurality of the poles corresponding to the plurality of the electrode assemblies, and a plurality of the poles are disposed on a side of at least one of the first cover body and the second cover body facing the sealed cavity.

14. An electrical device, wherein: A battery pack comprising the battery pack as claimed in any one of claims 1 to 13.

Images