CN220731678U - Battery module, battery and power consumption device - Google Patents

Abstract

The application provides a battery module, battery and power consumption device, belongs to battery technical field. The battery module comprises a plurality of battery packs, wherein each battery pack comprises a plurality of battery cells arranged along a first direction, the battery packs are arranged along a second direction, and the second direction is intersected with the first direction; a case for accommodating a plurality of battery packs, the case including two end plates opposing each other in a first direction; and a separator disposed between the adjacent two battery packs, the separator including a first separator assembly and a second separator assembly at least partially connected to each other, wherein the first separator assembly and the second separator assembly are connected to the two end plates.

Description

Battery module, battery and power consumption device

Technical Field

The application relates to the technical field of batteries, in particular to a battery module, a battery and an electric device.

Background

Energy conservation and emission reduction are key to sustainable development of the automobile industry, and electric vehicles become an important component of sustainable development of the automobile industry due to the energy conservation and environmental protection advantages of the electric vehicles. For electric vehicles, battery technology is an important factor in the development of the electric vehicles.

Currently, as the capacity requirement of a battery becomes larger, in order to expand the capacity of the battery, a plurality of battery cells are generally connected in series to form a battery pack, and the plurality of battery packs form a battery module in a double row or multiple rows. However, during the charge and discharge of the battery cell, the battery cell may bulge, and the battery module needs to be capable of effectively limiting the deformation of the battery cell.

Disclosure of Invention

The present application aims to solve at least one of the technical problems existing in the background art. Therefore, an object of the present application is to provide a battery module, a battery, and an electric device, so as to limit deformation of the battery cells to some extent.

Embodiments of the first aspect of the present application provide a battery module including a plurality of battery packs, a housing, and a separator. Each of the plurality of battery packs includes a plurality of battery cells arranged along a first direction, the plurality of battery packs being arranged along a second direction, the second direction intersecting the first direction; the case is for accommodating a plurality of battery packs, and includes two end plates opposing each other in a first direction; the separator is disposed between adjacent two of the battery packs, and the separator includes a first separator assembly and a second separator assembly at least partially connected to each other. The first and second diaphragm assemblies are connected to the two end plates.

In the technical scheme of this application embodiment, the baffle comprises first baffle subassembly and second baffle subassembly, and first baffle subassembly and second baffle subassembly all are connected with two end plates that arrange at first direction both ends. From this, through using first baffle subassembly and second baffle subassembly to constitute the baffle, increased the intensity of baffle to a certain extent, and then with first baffle subassembly and second baffle subassembly and two end plates connection back, increased the expansion force that the baffle can bear in first direction to a certain extent, alleviate or restrict end plate self along first direction outside expansion, improved battery module's intensity.

In some embodiments, the first spacer assembly includes a first connection portion that extends through a corresponding one of the two end plates to extend out of the housing, the first connection portion being connected with the corresponding end plate, and/or the second spacer assembly includes a second connection portion that extends through a corresponding one of the two end plates to extend out of the housing, the second connection portion being connected with the corresponding end plate. Therefore, the partition plate is connected with the end plate outside the end plate in a penetrating manner through the end plate through the first connecting part and/or the second connecting part, so that the connection area of the partition plate and the end plate is increased, the connection strength of the partition plate and the end plate is further increased, and the separation of the end plate and the partition plate at the connection position can be prevented to a certain extent.

In some embodiments, the first connection portion extends along the second direction and/or the second connection portion extends along the second direction. Therefore, the extending direction of the first connecting part and/or the second connecting part is set to be the second direction, and the first connecting part and/or the second connecting part can be relieved or limited to a certain extent to protrude out of the battery module, so that the shape of the battery module is more regular, and the battery module is convenient to install in the battery inner box body.

In some embodiments, the first connection portion and the second connection portion extend away from each other in the second direction. Therefore, the first connecting parts and the second connecting parts are not overlapped or staggered, and one connecting part is prevented from being separated from the end plate to a certain extent, so that the other connecting part is prevented from being separated from the end plate, and the connecting strength of the partition plate and the end plate is improved.

In some embodiments, the first and second connection portions are welded to the end plate. Because the welded connection mode has no special requirements on the structure of the connection part, no extra connecting piece is needed, and the processing, the manufacturing and the assembly of the first connecting part, the second connecting part and the end plate are convenient under the condition of ensuring the connection strength.

In some embodiments, the first and second baffle assemblies are removably connected to one another, thereby facilitating assembly of the first and second baffle assemblies into a baffle.

In some embodiments, the first separator assembly further comprises a first plug portion and the second separator assembly further comprises a second plug portion, the first plug portion being detachably engaged with the second plug portion. Thereby reducing the time required to combine the first and second diaphragm assemblies into a diaphragm without adding additional components.

In some embodiments, the first connection portion is provided with a bend guide for guiding the first connection portion to extend along the second direction, and/or the second connection portion is provided with a bend guide for guiding the second connection portion to extend along the second direction. Thus, the bending guide part is arranged to predefine the bending direction of the first connecting part and/or the second connecting part, thereby facilitating the connection of the first connecting part and/or the second connecting part with the end plate.

In some embodiments, the housing further comprises two side plates opposite to each other in the second direction. Because curb plate and end plate connect gradually end to end, form the structure of "curb plate-baffle-curb plate-baffle" in the battery module outside, can further restrict the free deformation of battery in the second direction, further improve battery module's intensity.

In some embodiments, the plurality of battery packs each include the same number of battery cells such that each of the plurality of battery packs is the same size in the first direction, facilitating installation of the separator.

An embodiment of the second aspect of the present application provides a battery, which includes the battery cell in the above embodiment.

An embodiment of a third aspect of the present application provides an electrical device, including a battery in the above embodiment, where the battery is configured to provide electrical energy.

The foregoing description is only an overview of the technical solutions of the present application, and may be implemented according to the content of the specification in order to make the technical means of the present application more clearly understood, and in order to make the above-mentioned and other objects, features and advantages of the present application more clearly understood, the following detailed description of the present application will be given.

Drawings

In the drawings, the same reference numerals refer to the same or similar parts or elements throughout the several views unless otherwise specified. The figures are not necessarily drawn to scale. It is appreciated that these drawings depict only some embodiments according to the disclosure and are not therefore to be considered limiting of its scope.

FIG. 1 is a schematic illustration of a vehicle according to some embodiments of the present application;

fig. 2 is a schematic structural view of a battery module according to some embodiments of the present application;

FIG. 3 is a schematic illustration of the structure of a first baffle assembly and a second baffle assembly according to some embodiments of the present application;

FIG. 4 is a schematic view of the structure of a first baffle assembly and a second baffle assembly according to further embodiments of the present application;

fig. 5 is an exploded view of a battery module according to some embodiments of the present application.

Reference numerals illustrate:

a vehicle 1000;

battery 100, controller 200, motor 300;

a battery module 10, a battery cell 11, an end plate 12, a separator 13, and a side plate 14;

the first baffle assembly 131, the second baffle assembly 132, the first connecting portion 133, the second connecting portion 134, the first plug portion 135, the second plug portion 136, the bending guide portion 137;

a first direction D1, a second direction D2.

Detailed Description

Embodiments of the technical solutions of the present application will be described in detail below with reference to the accompanying drawings. The following examples are only for more clearly illustrating the technical solutions of the present application, and thus are only examples, and are not intended to limit the scope of protection of the present application.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "comprising" and "having" and any variations thereof in the description and claims of the present application and in the description of the figures above are intended to cover non-exclusive inclusions.

In the description of the embodiments of the present application, the technical terms "first," "second," etc. are used merely to distinguish between different objects and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated, a particular order or a primary or secondary relationship. In the description of the embodiments of the present application, the meaning of "plurality" is two or more unless explicitly defined otherwise.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the present application. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.

In the description of the embodiments of the present application, the term "and/or" is merely an association relationship describing an association object, which means that three relationships may exist, for example, a and/or B may mean: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.

In the description of the embodiments of the present application, the term "plurality" refers to two or more (including two), and similarly, "plural sets" refers to two or more (including two), and "plural sheets" refers to two or more (including two).

In the description of the embodiments of the present application, the orientation or positional relationship indicated by the technical terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. are based on the orientation or positional relationship shown in the drawings, and are merely for convenience of describing the embodiments of the present application and for simplifying the description, rather than indicating or implying that the apparatus or element referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the embodiments of the present application.

In the description of the embodiments of the present application, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured" and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally formed; or may be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the embodiments of the present application will be understood by those of ordinary skill in the art according to the specific circumstances.

Currently, the application of power batteries is more widespread from the development of market situation. The power battery is not only applied to energy storage power supply systems such as hydraulic power, firepower, wind power and solar power stations, but also widely applied to electric vehicles such as electric bicycles, electric motorcycles, electric automobiles, and the like, and a plurality of fields such as military equipment, aerospace, and the like. With the continuous expansion of the application field of the power battery, the market demand of the power battery is also continuously expanding.

In order to expand the capacity of the battery, a plurality of battery cells are generally connected in series to form a battery pack, and the plurality of battery packs are assembled into a battery module in a double row or multiple rows. However, during the charge and discharge of the battery cell, as the temperature of the battery cell increases, the electrode tab expands, and deformation in the thickness direction of the battery cell is usually most pronounced. Therefore, the battery module needs to be able to effectively limit the deformation of the battery cells, for example, the deformation in the thickness direction of the battery cells.

The battery module disclosed by the embodiment of the application can be used in electric devices such as vehicles, ships or aircrafts, but is not limited to the electric devices. The power supply system with the battery module, the battery and the like disclosed by the application can be used for forming the power utilization device, so that the battery module is prevented from being deformed, and the safety of the battery is improved.

The embodiment of the application provides an electricity utilization device using a battery as a power supply, wherein the electricity utilization device can be, but is not limited to, a mobile phone, a tablet, a notebook computer, an electric toy, an electric tool, a battery car, an electric car, a ship, a spacecraft and the like. Among them, the electric toy may include fixed or mobile electric toys, such as game machines, electric car toys, electric ship toys, electric plane toys, and the like, and the spacecraft may include planes, rockets, space planes, and spacecraft, and the like.

For convenience of description, the following embodiment will take an electric device according to an embodiment of the present application as an example of the vehicle 1000.

Referring to fig. 1, fig. 1 is a schematic structural diagram of a vehicle according to some embodiments of the present application. The vehicle 1000 may be a fuel oil vehicle, a gas vehicle or a new energy vehicle, and the new energy vehicle may be a pure electric vehicle, a hybrid vehicle or a range-extended vehicle. The battery 100 is provided in the interior of the vehicle 1000, and the battery 100 may be provided at the bottom or the head or the tail of the vehicle 1000. The battery 100 may be used for power supply of the vehicle 1000, for example, the battery 100 may be used as an operating power source of the vehicle 1000. The vehicle 1000 may also include a controller 200 and a motor 300, the controller 200 being configured to control the battery 100 to power the motor 300, for example, for operating power requirements during start-up, navigation, and travel of the vehicle 1000.

In some embodiments of the present application, battery 100 may not only serve as an operating power source for vehicle 1000, but may also serve as a driving power source for vehicle 1000, instead of or in part instead of fuel oil or natural gas, to provide driving power for vehicle 1000.

Referring to fig. 2, fig. 2 is a schematic structural diagram of a battery module according to some embodiments of the present application. The battery module 10 includes a plurality of battery packs, a case, and separators 13. Each of the plurality of battery packs includes a plurality of battery cells 11, the plurality of battery cells 11 being arranged along a first direction D1 (a thickness direction of the battery cells 11), and the plurality of battery packs being arranged along a second direction D2 (a width direction of the battery cells 11). The case includes two end plates 12 opposite to each other at both ends in the first direction, thereby accommodating a plurality of battery packs. The separator 13 is disposed between adjacent two battery packs, and includes a first separator assembly 131 and a second separator assembly 132 at least partially connected to each other, and the first separator assembly 131 and the second separator assembly 132 are connected to the two end plates 12.

The separator 13 is disposed between adjacent two battery packs, and the separator 13 specifically includes a first separator assembly 131 and a second separator assembly 132, with the first separator assembly 131 and the second separator assembly 132 being at least partially connected. In some embodiments, the first diaphragm assembly 131 and the second diaphragm assembly 132 are symmetrical to each other along the first direction D1, thereby reducing the processing costs of the first diaphragm assembly 131 and the second diaphragm assembly 132 to some extent. In some embodiments, the materials of the first separator assembly 131 and the second separator assembly 132 may be adjusted according to the performance index of the battery module 10, for example, the strength of the battery module 10 may be higher by using a steel plate, for example, the energy density of the battery module 10 may be higher by using an aluminum alloy plate. In some embodiments, first diaphragm assembly 131 and second diaphragm assembly 132 may be non-removably connected to one another, including, but not limited to, laser penetration welding, resistance spot welding, plug welding, friction stir welding, friction welding, and the like.

Therefore, the separator 13 is formed by the first separator assembly 131 and the second separator assembly 132, so that the strength of the separator 13 is improved to a certain extent, and after the first separator assembly 131 and the second separator assembly 132 are connected with the two end plates 12, the expansion force bearable by the separator 13 in the first direction is improved to a certain extent, the end plates 12 are effectively prevented from expanding outwards along the first direction, and the strength of the battery module 10 is improved.

Referring to fig. 3, fig. 3 is a schematic structural diagram of a first separator plate assembly 131 and a second separator plate assembly 132 according to some embodiments of the present application. The first separator assembly 131 includes a first connection portion 133 that extends through a corresponding one 12 of the two end plates 12 to protrude out of the housing, the first connection portion 133 being connected with the corresponding end plate 12, and/or the second separator assembly 132 includes a second connection portion 134 that extends through a corresponding one 12 of the two end plates 12 to protrude out of the housing, the second connection portion 134 being connected with the corresponding end plate 12.

The first separator assembly 131 has a first connection portion 133 at least one of both ends along the first direction, and the end plate 12 has an opening at a position corresponding to the first connection portion 133, so that the first connection portion 133 is connected to the end plate 12 after passing through the opening of the end plate 12.

Similarly, the second separator assembly 132 has a second connecting portion 134 at least one of both ends in the first direction, and the end plate 12 has an opening at a position corresponding to the second connecting portion 134, so that the second connecting portion 134 is connected to the end plate 12 after passing through the opening of the end plate 12.

It is to be understood that the present utility model is not limited to the configuration in fig. 3 in which the first and second diaphragm assemblies 131 and 132 are provided at both ends thereof with the connection portions, and the arrangement positions and the number of the first and/or second connection portions 133 and 134 are not particularly limited. Meanwhile, the arrangement positions and the number of the first connection portions 133 of the first diaphragm assembly 131 do not affect the arrangement positions and the number of the second connection portions 134 of the second diaphragm assembly 132.

Thereby, the separator 13 is connected to the end plate 12 outside the end plate 12 through the first connecting portion 133 and/or the second connecting portion 134 in such a manner as to pass through the end plate 12, which is advantageous in increasing the connection area of the separator 13 to the end plate 12, and thus increasing the connection strength of the separator 13 to the end plate 12, so that the end plate 12 and the separator 13 can be prevented from being separated at the connection point to some extent.

According to some embodiments of the present application, the first connection portion 133 extends along the second direction D2, and/or the second connection portion 134 extends along the second direction D2. Therefore, the extending direction of the first connecting part and/or the second connecting part is set to be the second direction, and the first connecting part and/or the second connecting part can be relieved or limited to a certain extent to protrude out of the battery module, so that the shape of the battery module is more regular, and the battery module is convenient to install in the battery inner box body.

According to some embodiments of the present application, the first connection portion 133 and the second connection portion 134 extend away from each other in the second direction D2.

Referring to fig. 2, according to the relative positions of the first and second separator assemblies 131 and 132, the first connection portion 133 extends in one direction of the second direction D2, and the second connection portion 134 extends in the opposite direction to the first connection portion, so that the first and second connection portions 133 and 134 do not overlap or interleave with each other.

Thereby, it is possible to prevent one of the two connecting portions from being separated from the end plate 12, which in turn causes the other one to be separated from the end plate 12, to some extent, thereby increasing the connection strength of the separator 13 with the end plate 12.

According to some embodiments of the present application, the first and second connection portions 133, 134 are connected to the end plate 12 by welding, and specific manners of welding include, but are not limited to, laser filler wire welding, laser conventional welding, and arc welding. Because the welding connection method has no special requirement on the structure of the connection part and does not need to use additional connecting pieces, the processing, manufacturing and assembling of the first connection part 133, the second connection part 134 and the end plate 45 are convenient under the condition of ensuring the connection strength.

According to some embodiments of the present application, the first diaphragm assembly 131 and the second diaphragm assembly 132 are detachably connected to each other, and specific manners of detachable connection include, but are not limited to, fastening connection, eye-splice connection, and snap-fit connection, and other non-enumerated detachable connection manners are applicable. Thereby, the first diaphragm assembly 131 and the second diaphragm assembly 132 can be easily combined into the diaphragm 13.

Referring to fig. 4, fig. 4 is a schematic structural diagram of a first diaphragm assembly 131 and a second diaphragm assembly 132 according to some embodiments. The first separator assembly 131 further includes a first plug portion 135, and the second separator assembly 132 further includes a second plug portion 136, the first plug portion 135 being detachably engaged with the second plug portion 136.

In the embodiment of fig. 4, the first plugging portion 135 is specifically a trapezoid groove recessed in the thickness direction of the first separator assembly 131, and the second plugging portion 136 is specifically a trapezoid protrusion protruding in the thickness direction of the second separator assembly 132, and the first plugging portion 135 and the second plugging portion 136 have geometric shapes that can be matched with each other. It will be appreciated that the present utility model is not limited in particular to the geometry, placement and number of first plug portions 135 and second plug portions 136.

Thus, by providing the first and second plug portions 135 and 136 without adding additional components, the time required to combine the first and second diaphragm assemblies 131 and 132 into the diaphragm 13 is reduced.

According to some embodiments of the present application, the first connection portion 133 is provided with a bending guide portion 137, the bending guide portion 137 being for guiding the first connection portion 133 to extend along the second direction, and/or the second connection portion 134 is provided with a bending guide portion 137, the bending guide portion 137 being for guiding the second connection portion 134 to extend along the second direction.

Referring to fig. 3, the first connecting portion 133 is provided with a bending guiding portion 137, and the bending guiding portion 132 may be a section of score, crease or groove on the surface of the first connecting portion 133 for guiding the first connecting portion 133 to extend along the second direction D2. Similarly, the second connecting portion 134 is provided with a bending guide 137, and the bending guide 132 may be a score, crease or groove on a surface of the second connecting portion 134 for guiding the second connecting portion 134 to extend along the second direction D2. The specific arrangement position of the bending guide 137 may be determined accordingly according to the need of the connection area of the first connection portion 133 or the second connection portion 134 with the end plate 12.

Providing the bending guide 137 pre-defines the bending direction of the first connection portion 133 and/or the second connection portion 134, facilitates the relative bending of the first connection portion 133 and/or the second connection portion 134 to facilitate the accurate connection of the first connection portion 133 and/or the second connection portion 134 to the end plate 12. Meanwhile, the bending guide portion 137 can also ensure that the first connecting portion 133 and/or the second connecting portion 134 can have a predetermined length in the second direction when bending, which is beneficial to ensuring the connection area between the two connecting portions and the end portion 12, and further ensuring the connection strength.

According to some embodiments of the present application, the housing further comprises two side plates 14 opposite to each other in the second direction. Since the side plates 14 and the end plates 12 are connected end to end in sequence to form a structure of "side plate-separator-side plate-separator", the deformation of the battery cells 11 can be further restricted in the second direction by surrounding the plurality of battery packs at the periphery, and the strength of the battery module 10 can be further improved.

According to some embodiments of the present application, the plurality of battery packs each include the same number of battery cells 11, so that each of the plurality of battery packs is identical in size in the first direction, facilitating the installation of the separator 13.

Embodiments of the second aspect of the present application provide a battery comprising the battery module 10 described in the embodiments of the first aspect of the present application.

An embodiment of a third aspect of the present application provides an electrical device, including the above-mentioned battery, where the battery is configured to provide electrical energy.

The technical scheme of the application is further described through a specific embodiment.

Fig. 2 is a schematic structural view of a battery module according to some embodiments of the present application. Referring to fig. 2, the battery module 10 includes two battery packs, a case, and separators 13. Each battery pack includes five battery cells 11, the five battery cells 11 are arranged along a first direction D1 (a thickness direction of the battery cells 11), and two battery packs are arranged along a second direction D2 (a width direction of the battery cells 11). The case includes two end plates 12 opposite to each other at both ends in the first direction, thereby accommodating two battery packs. The separator 13 is disposed between adjacent two battery packs, and includes a first separator assembly 131 and a second separator assembly 132 at least partially connected to each other, a first connection part 133 and a second connection part 134 penetrate the end plate 12 to be connected to the two end plates, and the first connection part 133 and the second connection part 134 extend in the second direction D2 in opposite directions.

In addition, the end plate 12 has a smaller thickness than other portions at the region where the first and second connection parts 133 and 134 are connected, thereby ensuring that the region has no significant outward protrusions, which is advantageous for the arrangement of the battery module 10 in the battery.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the embodiments, and are intended to be included within the scope of the claims and description. In particular, the technical features mentioned in the respective embodiments may be combined in any manner as long as there is no structural conflict. The present application is not limited to the specific embodiments disclosed herein, but encompasses all technical solutions falling within the scope of the claims.

Claims (12)

1. A battery module (10), characterized by comprising:

a plurality of battery packs, each of the plurality of battery packs including a plurality of battery cells (11) arranged along a first direction (D1), the plurality of battery packs being arranged along a second direction (D2), the second direction (D2) intersecting the first direction (D1);

a housing for accommodating the plurality of battery packs, the housing comprising two end plates (12) opposite to each other in the first direction (D1);

a separator (13), the separator (13) being disposed between adjacent two of the battery packs, the separator (13) including a first separator assembly (131) and a second separator assembly (132) at least partially connected to each other,

wherein the first and second spacer assemblies (131, 132) are connected to the two end plates (12).

2. The battery module (10) according to claim 1, wherein the first separator assembly (131) includes a first connecting portion (133), the first connecting portion (133) passing through a corresponding end plate (12) of the two end plates (12) so as to protrude out of the case, the first connecting portion (133) being connected with the corresponding end plate (12), and/or

The second separator assembly (132) includes a second connecting portion (134), the second connecting portion (134) passing through a corresponding end plate (12) of the two end plates (12) so as to protrude out of the housing, the second connecting portion (134) being connected with the corresponding end plate (12).

3. The battery module (10) according to claim 2, wherein the first connection portion (133) extends along the second direction (D2) and/or the second connection portion (134) extends along the second direction (D2).

4. The battery module (10) according to claim 3, characterized in that the first connection part (133) and the second connection part (134) extend away from each other in the second direction (D2).

5. The battery module (10) according to any one of claims 2 to 4, wherein the first connection portion (133) and the end plate (12) are connected by welding, and/or the second connection portion (134) and the end plate (12) are connected by welding.

6. The battery module (10) according to any one of claims 1 to 4, wherein the first separator assembly (131) and the second separator assembly (132) are detachably connected to each other.

7. The battery module (10) of claim 6, wherein the first separator assembly (131) further comprises a first plug portion (135), the second separator assembly (132) further comprises a second plug portion (136), and the first plug portion (135) is detachably engaged with the second plug portion (136).

8. The battery module (10) according to any one of claims 2 to 4, wherein the first connection part (133) is provided with a bending guide part (137), the bending guide part (137) being for guiding the first connection part (133) to extend along the second direction (D2), and/or

The second connection portion (134) is provided with a bending guide portion (137), the bending guide portion (137) being for guiding the second connection portion (134) to extend along the second direction (D2).

9. The battery module (10) according to any one of claims 1 to 4, wherein the case further includes two side plates (14) opposite to each other in the second direction (D2).

10. The battery module (10) according to any one of claims 1 to 4, wherein the plurality of battery packs each include the same number of battery cells (11).

11. A battery, characterized by comprising a battery module (10) according to any one of claims 1 to 10.

12. An electrical device comprising the battery of claim 11 for providing electrical energy.