Battery device and electric equipment

Abstract

The utility model discloses a battery device and electric equipment. The battery device comprises two end plates, a plurality of battery packs and a partition plate, the two end plates are oppositely arranged at intervals, and each end plate comprises an end face facing the other end plate; the plurality of battery packs are arranged between the two end plates, each battery pack comprises a plurality of battery monomers arranged along a first direction, and the plurality of battery packs are arranged along a second direction; the partition plate comprises two opposite end portions, and the end portions abut against the end face of the corresponding end plate and are fixedly connected with the corresponding end plate. Therefore, the two end parts of the partition plate are fixedly connected with the corresponding end plates respectively, so that the relative positions of the two end plates can be limited, and the end plates can limit the deformation of the plurality of single batteries in the first direction; furthermore, the end parts of the partition plates abut against the end surfaces of the end plates, so that the end plates and the partition plates are simple in structure, and the cost of the battery device is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, in particular to a battery device and electrical equipment. Background Art

[0002] Energy conservation and emission reduction are the key to the sustainable development of the automobile industry. In this case, electric vehicles have become an important component of the sustainable development of the automobile industry due to their advantages of energy conservation and environmental protection. For electric vehicles, battery technology is an important factor related to their development. At present, as the demand for battery capacity increases, in order to expand the capacity of the battery, multiple battery cells are usually connected in series to form a battery pack, and multiple battery packs are formed into a battery module in the form of double rows or multiple rows. However, during the charging and discharging process of the battery cell, the battery cell may swell and affect the life of the battery cell. Utility Model Content

[0003] In view of the above problems, the utility model provides a battery device and an electrical equipment, which can limit the expansion and deformation of the battery cell to a certain extent.

[0004] In the first aspect, the utility model provides a battery device, which includes two end plates, a plurality of battery groups and a partition, the two end plates are arranged relative to each other, and each end plate includes an end face facing the other end plate; the plurality of battery groups are arranged between the two end plates, each battery group includes a plurality of battery cells arranged along a first direction, the plurality of battery groups are arranged along a second direction, the second direction intersects with the first direction, and the first direction is the arrangement direction of the two end plates; the partition is arranged between two adjacent battery groups, and the partition includes two opposite end portions, the end portions abut against the end face of a corresponding one of the end plates and are fixedly connected to the corresponding end plate.

[0005] In the battery device of the embodiment of the utility model, the two ends of the partition are respectively fixedly connected to the corresponding end plates, so that the relative positions of the two end plates can be limited, so that the end plates can limit the deformation of multiple battery cells in the first direction; in addition, the partition is arranged between two adjacent battery groups, so that the battery group can be limited, which is beneficial to the assembly of the battery group; further, the end of the partition abuts against the end face of the end plate, so that the structure of the end plate and the partition is simple, which is beneficial to reducing the cost of the battery device.

[0006] In some embodiments, the end of the partition includes a connecting surface, the connecting surface is formed with a thickness dimension of the partition, and the connecting surface abuts against the end surface.

[0007] In the above-mentioned embodiment, the end plate is basically a structure with a regular shape, so that the structure of the end plate is simple, which is conducive to reducing the cost of the end plate.

[0008] In some embodiments, the partition includes a blocking portion and at least one bent portion, the blocking portion is disposed between two adjacent battery packs, the bent portion connects one end of the blocking portion toward the end plate, and the blocking portion and the bent portion together form an end portion of the partition.

[0009] In the above embodiment, the blocking portion and the bent portion jointly form the end portion of the partition, that is, the bent portion abuts against the end surface of the end plate, which can increase the contact area between the partition and the end plate, which is beneficial to improving the stability of the connection between the partition and the end plate.

[0010] In some embodiments, the end of the partition is fixed to the end plate by welding. In the above embodiments, the partition is firmly connected to the end plate, and the partition can more stably limit the relative position of the two end plates.

[0011] In some embodiments, an insulating member is provided between the separator and the battery cell. In the above embodiments, the insulating member can isolate the separator from the battery cell, reduce the risk of short circuit between the battery cell and the separator, and improve the safety of the battery device.

[0012] In some embodiments, the insulating member is disposed on the partition. In the above embodiments, the insulating member is installed in a simple manner, and the insulating member is stable after installation, which is conducive to improving the assembly efficiency of the battery device.

[0013] In some embodiments, the insulating member covers the battery cell along the projection of the second direction. In the above embodiments, the insulating member can cover the battery cell in the second direction, which can reduce the risk of short circuit between the battery cell and the separator and improve the safety of the battery device.

[0014] In some embodiments, the partition is provided with a through hole penetrating the partition along the thickness direction of the partition; or, the partition is a continuous entity. In the above embodiments, the through hole on the partition can reduce the weight of the partition and reduce the cost of the partition. When the partition is a continuous entity, the structure of the partition is simple, which can reduce the manufacturing cost of the partition.

[0015] In the above embodiment, the battery cell includes a first outer side surface and a second outer side surface connected to the first outer side surface, the first outer side surface is the largest outer side surface of the battery cell, and the first outer side surface faces the end plate.

[0016] In the above embodiment, since the largest outer side of the battery cell is more likely to expand and deform, the first outer side faces the end plate, so that the end plate can effectively limit the expansion and deformation of the battery cell and increase the life of the battery cell.

[0017] In a second aspect, the utility model provides an electrical device, which includes a battery device in any of the above embodiments, and the battery device is used to provide electrical energy.

[0018] The above description is only an overview of the technical solution of the utility model. In order to more clearly understand the technical means of the utility model, 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 utility model more obvious and easy to understand, the specific implementation methods of the utility model are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Various other advantages and benefits will become apparent to those skilled in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only used for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present invention. In addition, the same reference numerals are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0020] Figure 1 It is a schematic diagram of the structure of a vehicle in some embodiments of the utility model;

[0021] Figure 2 It is a three-dimensional schematic diagram of a battery device in some embodiments of the utility model;

[0022] Figure 3 It is a schematic plan view of a battery device according to some embodiments of the present invention;

[0023] Figure 4 for Figure 3 An enlarged schematic diagram of a portion A of a battery device;

[0024] Figure 5 It is a schematic plan view of a battery device according to some embodiments of the present invention;

[0025] Figure 6 for Figure 5 An enlarged schematic diagram of part B of the battery device;

[0026] Figure 7 It is a schematic plan view of an insulating member according to some embodiments of the present invention.

[0027] Description of reference numerals:

[0028] 1000-vehicle; 100-battery device; 200-controller; 300-motor; 10-end plate; 11-end surface; 20-battery pack; 21-battery cell; 211-first outer side surface; 212-second outer side surface; 30-partition plate; 31-end; 301-connecting surface; 302-isolating surface; 32-blocking portion; 33-bending portion; 34-through hole; 40-insulating member; D1-first direction; D2-second direction. DETAILED DESCRIPTION

[0029] The following embodiments of the technical solution of the utility model are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the utility model, and are therefore only used as examples, and cannot be used to limit the protection scope of the utility model.

[0030] Unless otherwise defined, all technical and scientific terms used herein have the same meanings as those commonly understood by technicians in the technical field to which the present invention belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention; the terms "including" and "having" in the specification and claims of the present invention and the above-mentioned figure descriptions and any variations thereof are intended to cover non-exclusive inclusions.

[0031] In the description of the embodiments of the present utility model, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present utility model, the meaning of "multiple" is more than two, unless otherwise clearly and specifically defined.

[0032] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present invention. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0033] In the description of the embodiments of the present utility model, the term "and / or" is only a description of the association relationship of the associated objects, indicating that there may be three relationships, for example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0034] In the description of the embodiments of the present invention, 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).

[0035] In the description of the embodiments of the present invention, 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. 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 embodiments of the present invention and simplifying the description, and do not indicate or imply that the referred device or element 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 invention.

[0036] In the description of the embodiments of the present utility model, unless otherwise clearly specified and limited, technical terms such as "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present utility model can be understood according to specific circumstances.

[0037] At present, from the perspective of market development, the application of power batteries is becoming more and more extensive. Power batteries are not only used in energy storage power systems such as hydropower, thermal power, wind power and solar power stations, but also widely used in electric vehicles such as electric bicycles, electric motorcycles, electric cars, as well as military equipment and aerospace and other fields. With the continuous expansion of the application field of power batteries, the market demand is also constantly expanding.

[0038] At present, as the demand for battery capacity increases, in order to expand the battery capacity, multiple battery cells are usually connected in series to form a battery pack, and multiple battery packs are formed into a battery module in the form of double rows or multiple rows. However, during the charge and discharge process of the battery cell, the battery cell may swell and affect the life of the battery device.

[0039] In order to limit the expansion and deformation of battery cells to a certain extent, thereby increasing the life of the battery device, the utility model provides a battery device. In the battery device of the utility model embodiment, the two ends of the partition of the battery device are respectively fixedly connected to the corresponding end plates, so that the relative positions of the two end plates can be limited, so that the end plates can limit the deformation of multiple battery cells in a first direction; in addition, the partition is arranged between two adjacent battery groups, so that the battery group can be limited, which is beneficial to the assembly of the battery group; further, the end of the partition abuts against the end face of the end plate, so that the structure of the end plate and the partition is simple, which is beneficial to reducing the cost of the battery device.

[0040] The battery device disclosed in the embodiment of the utility model can be used in, but not limited to, electrical equipment such as vehicles, ships or aircraft. The power supply system of the electrical equipment can be composed of the battery monomer, battery, etc. disclosed in the utility model.

[0041] The embodiment of the utility model provides an electric device using a battery cell as a power source, and the electric device may be, but is not limited to, a mobile phone, a tablet, a laptop, an electric toy, an electric tool, a battery car, an electric car, a ship, a spacecraft, etc. Among them, the electric toy may include a fixed or mobile electric toy, for example, a game console, an electric car toy, an electric ship toy, an electric airplane toy, etc., and the spacecraft may include an airplane, a rocket, a space shuttle, a spacecraft, etc.

[0042] For the convenience of description, the following embodiments are described by taking a vehicle 1000 as an example of an electrical device according to an embodiment of the utility model.

[0043] Please refer to Figure 1 , Figure 1 A schematic diagram of the structure of a vehicle 1000 provided for some embodiments of the utility model. The vehicle 1000 may be a fuel vehicle, a gas vehicle or a new energy vehicle, and the new energy vehicle may be a pure electric vehicle, a hybrid vehicle or an extended-range vehicle, etc. A battery device 100 is provided inside the vehicle 1000, and the battery device 100 may be provided at the bottom, the head or the tail of the vehicle 1000. The battery device 100 may be used to power the vehicle 1000, for example, the battery device 100 may be used as an operating power source for the vehicle 1000. The vehicle 1000 may also include a controller 200 and a motor 300, and the controller 200 is used to control the battery device 100 to power the motor 300, for example, for the starting, navigation and working power requirements of the vehicle 1000 during driving.

[0044] In some embodiments of the present invention, the battery device 100 can be used not only as an operating power source for the vehicle 1000, but also as a driving power source for the vehicle 1000, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1000. In some embodiments, the battery device 100 can be an energy storage device. The energy storage device includes an energy storage container, an energy storage cabinet, etc.

[0045] Please refer to Figure 2-Figure 4The battery device 100 of the embodiment of the utility model includes two end plates 10, a plurality of battery groups 20 and a partition 30. The two end plates 10 are arranged relative to each other, and each end plate 10 includes an end face 11 facing the other end plate 10; the plurality of battery groups 20 are arranged between the two end plates 10, and each battery group 20 includes a plurality of battery cells 21 arranged along a first direction D1. The plurality of battery groups 20 are arranged along a second direction D2, and the second direction D2 intersects with the first direction D1. The first direction D1 is the arrangement direction of the two end plates 10; the partition 30 is arranged between two adjacent battery groups 20, and the partition 30 includes two opposite end portions 31. The end portion 31 of the partition 30 abuts against the end face 11 of a corresponding end plate 10 and is fixedly connected to the corresponding end plate 10.

[0046] Specifically, the end plate 10 may be a part of the box of the battery device 100, and the end plate 10 is located at one end of the box of the battery device 100. The shapes, structures and materials of the two end plates 10 may be the same or different. The end surface 11 of the end plate 10 may be a plane, so that the space between the two end plates 10 is a regular space, which is conducive to installing the battery pack 20.

[0047] The number of battery packs 20 may be two, three, four, etc. The number of battery cells 21 in each battery pack 20 may be the same. In the embodiment of the utility model, the battery cell 21 may include a lithium ion secondary battery, a lithium ion primary battery, a lithium sulfur battery, a sodium lithium ion battery, a sodium ion battery or a magnesium ion battery, etc., and the embodiment of the utility model is not limited to this.

[0048] Multiple battery cells 21 can be connected in series, in parallel or in hybrid connection. Hybrid connection means that multiple battery cells 21 are connected in series and in parallel. Multiple battery cells 21 can be directly connected in series, in parallel or in hybrid connection, and then the whole body formed by multiple battery cells 21 is accommodated in the space between the two end plates 10; of course, the battery device 100 can also be a battery module formed by multiple battery cells 21 connected in series, in parallel or in hybrid connection, and then multiple battery modules are connected in series, in parallel or in hybrid connection to form a whole body and accommodated in the space between the two end plates 10.

[0049] The battery cell 21 can be cylindrical, flat, rectangular or other shapes, and the present invention is not limited to this. The battery cell 21 is generally divided into three types according to the packaging method: cylindrical battery cell 21, square battery cell 21 and soft pack battery cell 21, and the present invention is not limited to this.

[0050] The battery cell 21 includes an electrode assembly and an electrolyte. The electrode assembly is composed of a positive electrode sheet, a negative electrode sheet and a separator. The battery cell 21 mainly relies on the movement of metal ions between the positive electrode sheet and the negative electrode sheet to work. The positive electrode sheet includes a positive electrode current collector and a positive electrode active material layer. The positive electrode active material layer is coated on the surface of the positive electrode current collector. The current collector not coated with the positive electrode active material layer protrudes from the current collector coated with the positive electrode active material layer. The current collector not coated with the positive electrode active material layer serves as a positive electrode tab. Taking a lithium-ion battery as an example, the material of the positive electrode current collector may be aluminum, and the positive electrode active material may be lithium cobalt oxide, lithium iron phosphate, ternary lithium or lithium manganese oxide, etc. The negative electrode sheet includes a negative electrode current collector and a negative electrode active material layer. The negative electrode active material layer is coated on the surface of the negative electrode current collector. The current collector not coated with the negative electrode active material layer protrudes from the current collector coated with the negative electrode active material layer. The current collector not coated with the negative electrode active material layer serves as a negative electrode tab. The material of the negative electrode current collector may be copper, and the negative electrode active material may be carbon or silicon, etc. In order to ensure that a large current can pass without melting, the number of positive electrode tabs is multiple and stacked together, and the number of negative electrode tabs is multiple and stacked together. The material of the diaphragm can be PP (polypropylene) or PE (polyethylene).

[0051] In the embodiment of the present invention, the first direction D1 and the second direction D2 can be arranged perpendicularly. The partition 30 is fixedly connected to the end plate 10, which means that the partition 30 and the end plate 10 are connected to form a whole, and the two are difficult to move relative to each other.

[0052] It can be understood that each end 31 of the partition 30 abuts against the end surface 11 of one end plate 10 , or in other words, the end 31 of the partition 30 is in contact with the end surface 11 of the end plate 10 .

[0053] In summary, in the battery device 100 of the embodiment of the utility model, the two end portions 31 of the partition 30 are respectively fixedly connected to the corresponding end plates 10, so that the relative positions of the two end plates 10 can be limited, so that the end plates 10 can limit the deformation of multiple battery cells 21 in the first direction D1; in addition, the partition 30 is arranged between two adjacent battery groups 20, so that the battery group 20 can be limited, which is beneficial to the assembly of the battery group 20; further, the end portion 31 of the partition 30 abuts against the end surface 11 of the end plate 10, so that the structure of the end plate 10 and the partition 30 is simple, which is beneficial to reducing the cost of the battery device 100.

[0054] See also Figure 4 In some embodiments, the end portion 31 of the partition 30 includes a connecting surface 301 , the connecting surface 301 is formed with a thickness dimension of the partition 30 , and the connecting surface 301 abuts against the end surface 11 .

[0055] Specifically, Figure 4As shown, the partition 30 may further include an isolation surface 302, the isolation surface 302 is connected to the connection surface 301, the isolation surface 302 faces the battery cell 21, the isolation can form the length and height of the partition 30, and the connection surface 301 can form the thickness and height of the partition 30. In other words, the partition 30 is a flat plate, and the isolation surface 302 and the connection surface 301 are both flat. Therefore, in the above embodiment, the end plate 10 is basically a structure with a regular shape, so that the structure of the end plate 10 is simple, which is conducive to reducing the cost of the end plate 10.

[0056] The height mentioned above refers to the upward dimension of the battery device 100 when it is in normal use.

[0057] See also Figure 5 and Figure 6 In some embodiments, the partition 30 includes a blocking portion 32 and at least one bent portion 33. The blocking portion 32 is disposed between two adjacent battery packs 20. The bent portion 33 connects one end of the blocking portion 32 toward the end plate 10. The blocking portion 32 and the bent portion 33 together form an end portion 31 of the partition 30.

[0058] Specifically, the barrier portion 32 is roughly in the shape of a flat plate, and the bending portion 33 is in the shape of a sheet. The bending portion 33 is arranged roughly perpendicular to the barrier portion 32. A bending portion 33 may be provided at at least one end of the barrier portion 32. For example, two bending portions 33 may be provided at one end of the barrier portion 32, and the bending directions of the two bending portions 33 are opposite. The barrier portion 32 and the bending portion 33 may be formed by the same profile through a bending process, and form the end portion 31 of the partition 30. In other words, the end portion 31 of the partition 30 includes a portion of the barrier portion 32 and at least a portion of the bending portion 33.

[0059] Thus, in the above embodiment, the blocking portion 32 and the bending portion 33 jointly form the end portion 31 of the partition 30, that is, the bending portion 33 abuts against the end surface 11 of the end plate 10, which can increase the contact area between the partition 30 and the end plate 10, which is beneficial to improve the stability of the connection between the partition 30 and the end plate 10.

[0060] See also Figure 4 and Figure 6 In some embodiments, the end 31 of the partition 30 is welded and fixed to the end plate 10. Specifically, when the partition 30 is a flat plate, the partition 30 can be welded and fixed to the end plate 10 by fillet butt welding, lap welding, etc. When the partition 30 is bent, the partition 30 can be welded to the end plate 10 by lap welding, fillet butt welding, plug welding, etc. In this way, in the above embodiment, the partition 30 is firmly connected to the end plate 10, and the partition 30 can more stably limit the relative position of the two end plates 10.

[0061] Of course, in some embodiments, when the partition 30 has a bent portion 33 , the partition 30 can be fixedly connected to the end plate 10 by using fasteners such as bolts to pass through the bent portion 33 .

[0062] See also Figure 4 In some embodiments, an insulating member 40 is provided between the partition 30 and the battery cell 21. Specifically, the insulating member 40 can be made of an insulating material such as polyethylene terephthalate (PET). The insulating member 40 can be in the form of a film. The insulating member 40 isolates each battery pack 20 from the partition 30, or in other words, the insulating member 40 is provided on the side of the partition 30 facing the battery pack 20. In this way, in the above embodiment, the insulating member 40 can isolate the partition 30 from the battery cell 21, reduce the risk of short circuit between the battery cell 21 and the partition 30, and improve the safety of the battery device 100.

[0063] See also Figure 4 In some embodiments, the insulating member 40 is disposed on the partition 30. Specifically, the insulating member 40 can be disposed on the partition 30 by bonding or the like, so that the insulating member 40 and the partition 30 can form a whole. In this way, in the above embodiment, the insulating member 40 is installed in a simple manner, and the insulating member 40 is stable after installation, which is conducive to improving the assembly efficiency of the battery device 100.

[0064] In some embodiments, the insulating member 40 covers the battery cell 21 along the projection in the second direction D2. Specifically, when the insulating member 40 is flexible and disposed on the separator 30, in order to allow the insulating member 40 to cover the battery cell 21, the height of the separator 30 may be greater than the height of the battery cell 21. Thus, in the above embodiment, the insulating member 40 may cover the battery cell 21 in the second direction D2, which may reduce the risk of short circuit between the battery cell 21 and the separator 30, thereby improving the safety of the battery device 100.

[0065] See also Figure 7 In some embodiments, the partition 30 is provided with a through hole 34 that penetrates the partition 30 along the thickness direction of the partition 30. In other words, the partition 30 has a hollow structure. The through hole 34 can be a hole of a regular shape such as a round hole or a square hole, or a hole of an irregular shape. In this way, in the above embodiment, the through hole 34 on the partition 30 can reduce the weight of the partition 30 and reduce the cost of the partition 30.

[0066] In some embodiments, the partition 30 is a continuous entity. When the partition 30 is a continuous entity, the structure of the partition 30 is simple, and the manufacturing cost of the partition 30 can be reduced.

[0067] See also Figure 4In the above embodiment, the battery cell 21 includes a first outer side surface 211 and a second outer side surface 212 connected to the first outer side surface 211 . The first outer side surface 211 is the largest outer side surface of the battery cell 21 , and the first outer side surface 211 faces the end plate 10 .

[0068] Specifically, the first outer side surface 211 can also be called the large side of the battery cell 21, and the second outer side surface 212 can also be called the small side of the battery cell 21. Since the largest outer side surface of the battery cell 21 is more prone to expansion and deformation, the first outer side surface 211 faces the end plate 10, so that the end plate 10 can effectively limit the expansion and deformation of the battery cell 21 and increase the life of the battery cell 21.

[0069] The electric device of the embodiment of the present utility model comprises a battery device 100. The battery device 100 is used to provide electric energy for the electric device.

[0070] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it; although the utility model has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the above embodiments, or replace some or all of the technical features therein by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the utility model, and they should all be included in the scope of the claims and description of the utility model. In particular, as long as there is no structural conflict, the various technical features mentioned in each embodiment can be combined in any way. The utility model is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A battery device, characterized in that: include: Two end plates, the two end plates are arranged opposite to each other and spaced apart, and each end plate comprises an end surface facing the other end plate; A plurality of battery groups, the plurality of battery groups are arranged between the two end plates, each battery group comprises a plurality of battery cells arranged along a first direction, the plurality of battery groups are arranged along a second direction, the second direction intersects the first direction, and the first direction is the arrangement direction of the two end plates; and A partition is disposed between two adjacent battery packs, and includes two opposite ends, wherein the ends abut against an end surface of a corresponding end plate and are fixedly connected to the corresponding end plate.

2. The battery device according to claim 1, characterized in that: The end of the partition includes a connection surface, the connection surface is formed with a thickness dimension of the partition, and the connection surface abuts against the end surface.

3. The battery device according to claim 1, characterized in that: The partition includes a blocking portion and at least one bent portion, the blocking portion is arranged between two adjacent battery packs, the bent portion connects one end of the blocking portion toward the end plate, and the blocking portion and the bent portion together form an end portion of the partition.

4. The battery device according to any one of claims 1 to 3, characterized in that: The end of the partition is welded and fixed to the end plate.

5. The battery device according to claim 1, characterized in that: An insulating member is provided between the separator and the battery cell.

6. The battery device according to claim 5, characterized in that: The insulating member is disposed on the partition plate.

7. The battery device according to claim 5, characterized in that: The projection of the insulating member along the second direction covers the battery cell.

8. The battery device according to claim 1, characterized in that: The partition is provided with a through hole penetrating the partition along the thickness direction of the partition; or the partition is a continuous entity.

9. The battery device according to claim 1, characterized in that: The battery cell includes a first outer side surface and a second outer side surface connected to the first outer side surface, the first outer side surface is the largest outer side surface of the battery cell, and the first outer side surface faces the end plate.

10. An electrical device, characterized in that: The electrical equipment comprises the battery device according to any one of claims 1 to 9, and the battery device is used to provide electrical energy.

Images