Battery device and vehicle

Abstract

The application relates to the technical field of batteries, and provides a battery device and a vehicle. The battery device comprises a box body, a battery module, a first cover plate and a mounting piece. The battery module can be mounted in a first cavity of the box body through a first mounting opening of the box body, and the battery module is enclosed in the first cavity of the box body by connecting the first cover plate with the box body. The box body is a one-piece structure, so that the box body does not need to be assembled separately, and the assembly process of the battery device is more simplified. In addition, the one-piece structure of the box body has less components, a more compact structure and a larger internal space, can accommodate a battery module with a larger volume, and accordingly, the electric capacity of the battery device can be set to be larger.

Description

Technical Field

[0001] This application relates to a battery device and a vehicle, belonging to the field of battery technology. Background Technology

[0002] In some vehicles, the battery components are partially exposed on the vehicle's surface. Accordingly, in order to improve the safety of the battery components, a casing structure is needed to protect the battery modules inside the battery components, thereby ensuring the safety and reliability of the battery components.

[0003] Currently, the assembly of battery modules in some vehicles involves a large number of components, making the assembly process complex. Utility Model Content

[0004] This application provides a battery device and a vehicle to solve the problem that the battery device assembly process of some vehicles in the related art is complicated and inconvenient.

[0005] To achieve the above objectives, this application adopts the following technical solution:

[0006] In a first aspect, this application provides a battery device, comprising:

[0007] The housing has a first cavity and a first mounting port, the first mounting port being connected to the first cavity, and the housing is an integral structure.

[0008] A battery module is disposed within the first cavity, and the battery module is connected to the housing.

[0009] A first cover plate is connected to the housing so that the first cover plate seals the first mounting port.

[0010] In some embodiments, the battery device further includes a fixing member disposed on the inner wall of the first cavity, the fixing member being detachably connected to the battery module.

[0011] In some embodiments, the battery module includes a connector that overlaps the fastener to detachably connect the battery module to the housing.

[0012] In some embodiments, there are multiple fasteners, which are spaced apart along the depth direction of the first cavity on the sidewall of the first cavity, and at least one of the multiple fasteners is connected to the battery module.

[0013] In some embodiments, the battery module includes multiple sub-modules, which are stacked sequentially along the depth direction of the first cavity, and the connector is connected to the uppermost sub-module among the multiple sub-modules.

[0014] In some embodiments, the battery module includes a first battery module and a second battery module, the first battery module and / or the second battery module being disposed in the first cavity, and at least one of the capacity and size of the first battery module and the second battery module being different.

[0015] In some embodiments, the battery device further includes reinforcing ribs disposed on the housing, and the fasteners are disposed on the reinforcing ribs.

[0016] In some embodiments, the battery device further includes a support member disposed on the bottom wall of the first cavity, and the battery module disposed on the support member such that there is a gap between the bottom of the battery module and the bottom wall of the first cavity.

[0017] In some embodiments, the battery module is fixedly connected to the support member.

[0018] In some embodiments, the battery device further includes a first positioning member, and the battery module further includes a second positioning member, wherein the first positioning member is disposed on the support member, and the second positioning member is disposed at the bottom of the battery module;

[0019] One of the first positioning member and the second positioning member has a positioning hole, and the other of the first positioning member and the second positioning member is inserted into the positioning hole, and the first positioning member and the second positioning member are connected.

[0020] In some embodiments, the battery module has multiple mounting holes arranged circumferentially along the battery module.

[0021] In some embodiments, the battery device further includes a power distribution module disposed within the housing and electrically connected to the battery module.

[0022] In some embodiments, the battery device further includes a second cover plate, the housing has a second cavity and a second mounting port, the second mounting port communicates with the second cavity, the housing has a through hole communicating with the second cavity and the first cavity, the power distribution module is disposed in the second cavity, and the second cover plate is detachably disposed in the second mounting port.

[0023] In some embodiments, the battery device further includes a mounting member disposed on the outer wall of the housing, the mounting member being used for connection to the vehicle body;

[0024] Alternatively, the battery device may further include a mounting member disposed on the outer wall of the housing for connection to the vehicle body.

[0025] In some embodiments, there are multiple mounting components arranged circumferentially along the housing.

[0026] Secondly, based on the battery device described above, this application also provides a vehicle, including a vehicle body and the battery device described above, wherein the battery device is disposed in the vehicle body.

[0027] In the battery device provided in this application, the battery module can be installed into the first cavity of the housing through the first mounting port, and then the battery module is sealed within the first cavity of the housing by connecting the first cover plate to the housing. The housing is an integral structure, which eliminates the need for separate assembly of the housing and simplifies the assembly process of the battery device. In addition, the integral structure housing has fewer parts, a more compact structure, and a larger internal space, which can accommodate larger battery modules, and correspondingly, the battery capacity of the battery device can be set to be larger.

[0028] The vehicle provided in this application includes the aforementioned battery device, which simplifies the assembly process of the vehicle's battery device and makes it more convenient to replace the vehicle's battery device. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0030] Figure 1 A schematic diagram of the battery device provided in the embodiments of this application;

[0031] Figure 2 This is an exploded structural diagram of the battery device housing provided in an embodiment of this application;

[0032] Figure 3 This is an exploded structural diagram of the battery device provided in the embodiments of this application;

[0033] Figure 4 A schematic diagram of a battery module comprising two sub-modules provided in the embodiments of this application;

[0034] Figure 5 This is a schematic diagram of the internal structure of the battery device housing provided in the embodiments of this application;

[0035] Figure 6 This is a schematic diagram of the second positioning element of the battery device provided in the embodiments of this application;

[0036] Figure 7 This is a schematic diagram of the connector of the battery device provided in an embodiment of this application.

[0037] Explanation of reference numerals in the attached figures:

[0038] 100 - Housing; 110 - First cavity; 120 - First mounting port; 130 - Second cavity; 140 - Second mounting port;

[0039] 200 - Battery module; 210 - Sub-module; 220 - Connector; 230 - Second positioning component; 231 - Positioning hole; 240 - Lifting hole;

[0040] 300 - First cover plate;

[0041] 400 - Installation components;

[0042] 500 - Fastener;

[0043] 600 - Support component; 610 - First positioning component;

[0044] 700 - Reinforcing rib;

[0045] 800 - Second cover plate;

[0046] 900 - Lifting components. Detailed Implementation

[0047] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0048] In some vehicles, the battery components are partially exposed on the vehicle's surface. Accordingly, in order to improve the safety of the battery components, a casing structure is needed to protect the battery modules inside the battery components, thereby ensuring the safety and reliability of the battery components.

[0049] Currently, the assembly of battery modules in some vehicles involves a large number of components, making the assembly process complex.

[0050] In the battery device proposed in this application, the battery module can be installed into the first cavity of the housing through the first mounting port, and then the battery module is sealed within the first cavity by connecting the first cover plate to the housing. The housing can be connected to the vehicle body through mounting components, so that the entire battery device can be fixed to the vehicle. This allows the battery module to be assembled first and then installed into the first cavity of the housing, simplifying the battery module assembly process. The housing is a one-piece structure, eliminating the need for separate assembly of the housing, further simplifying the battery device assembly process. In addition, the one-piece structure housing has fewer components, a more compact structure, and a larger internal space, which can accommodate larger battery modules, and correspondingly, the battery capacity can be set to be larger.

[0051] The vehicle proposed in this application, including the aforementioned battery device, simplifies the assembly process of the vehicle's battery device and makes battery replacement more convenient.

[0052] The contents of this application will now be described in detail with reference to the accompanying drawings, so that those skilled in the art can have a clearer and more detailed understanding of the contents of this application.

[0053] This application discloses a battery device, with reference to... Figures 1 to 3 As shown, the device includes a housing 100, a battery module 200, a first cover plate 300, and a mounting component 400. This battery device can be used in vehicles, such as forklifts and automobiles. It can also be used in energy storage devices; however, this application does not limit its application to this.

[0054] The housing 100 is the basic component of the battery device of this application. The housing 100 provides a mounting base for at least some other components of the battery device and serves to protect them. The housing 100 can be made of metal, giving it better structural strength, thus improving its durability and reliability. Alternatively, the housing 100 can also be constructed using a combination of metal and polymer materials. Specifically, parts of the housing 100 that are easily subjected to external impact or damage can be made of metal, while other parts can be made of polymer materials. This allows the housing 100 to achieve good structural strength without excessive weight.

[0055] The housing 100 has a first cavity 110, which is a hollow structure within the housing 100. The housing 100 also has a first mounting opening 120, which is an opening on the surface of the housing 100 and communicates with the first cavity 110. When assembling the battery device of this application, other components of the battery device can be installed into the first cavity 110 of the housing 100 through the first mounting opening 120.

[0056] The battery module 200 is disposed within the first cavity 110 of the housing 100, and the first cover plate 300 is disposed at the first mounting opening 120 to at least partially block the first mounting opening 120, thereby allowing the first cavity 110 to be closed. In this way, the battery module 200 can be enclosed within the first cavity 110 of the housing 100, thus protecting the battery module 200. Specifically, the first cover plate 300 can be detachably connected to the housing 100 or movably connected, both of which allow the first cover plate 300 to open and close the first mounting opening 120.

[0057] It should be understood that the battery module 200 can be formed by combining a number of battery cells in series, giving the battery module 200 a large capacity. Multiple battery cells can be stacked along their thickness direction, making the battery module 200 structurally compact. Furthermore, to ensure the stability of the stacked battery cells in the battery module 200, a restraint structure is provided to fix the multiple battery cells. Specifically, the structure may include two partitions located on the outermost side of the stacking direction of the multiple battery cells. These two partitions can clamp the multiple battery cells, and the two partitions are fixed together to secure the battery module 200 as a whole.

[0058] Therefore, when installing the battery module 200 into the first cavity 110 of the housing 100, the battery cells and restraint structure of the battery module 200 can be assembled outside the housing 100 first, and then the entire battery module 200 can be installed into the first cavity 110 through the first mounting port 120 of the housing 100. Finally, the first cover plate 300 is connected to the housing 100, so that the battery module 200 can be sealed within the first cavity 110 of the housing 100. This process of installing the battery module 200 into the housing 100 is simpler and more convenient.

[0059] The housing 100 can be a single-piece structure, meaning it can be constructed from a single component. This eliminates the need for additional connecting structures on the housing 100 to link multiple components, thus reducing the number of components and simplifying its structure. Consequently, when assembling the battery assembly, the assembled battery module 200 can be directly installed into the first cavity 110 of the housing 100, without requiring separate assembly of the housing 100. This simplifies the battery assembly process and improves assembly efficiency.

[0060] Furthermore, the integrated structure of the housing 100 allows for fewer components within the housing 100, thus enabling a larger volume in the first cavity 110 of the housing 100 for a given volume. Consequently, the first cavity 110 of the housing 100 can accommodate a larger battery module 200. The larger the battery module 200, the more battery cells it contains, resulting in a larger battery capacity and ultimately a larger battery device capacity.

[0061] Mounting member 400 is disposed on the outer wall of housing 100. Mounting member 400 can be used to connect to a vehicle, so that the battery unit can be fixed to the vehicle. The battery unit is also electrically connected to the vehicle's drive system, thereby supplying power to the vehicle's drive system. Specifically, mounting member 400 can be disposed on the side wall of housing 100 or on the bottom wall of housing 100.

[0062] In some implementations, reference Figure 5 As shown, in order to ensure a stable connection between the battery module 200 and the housing 100, the battery device of this application may also include a fixing member 500. The fixing member 500 is disposed on the inner wall of the first cavity 110 of the housing 100, and the fixing member 500 is detachably connected to the battery module 200.

[0063] The fastener 500 can be a metal part, and it protrudes from the inner wall of the first cavity 110. Specifically, the fastener 500 can be connected to the inner wall of the first cavity 110 by welding, so that the fastener 500 and the housing 100 can be connected as a whole. This makes the structure of the fastener 500 more stable, and improves the stability of the connection between the battery module 200 and the housing 100 through the fastener 500.

[0064] Furthermore, the fixing member 500 protrudes from the inner wall of the first cavity 110, allowing a gap between the battery module 200 and the inner wall of the first cavity 110. This allows heat generated during operation of the battery module 200 to flow through this gap, dispersing the heat within the housing 100 and preventing overheating in localized areas. The housing 100 is made of metal, allowing heat to escape to the outside. This prevents heat from accumulating inside the housing 100, ensuring that the battery device of this application operates at a stable temperature and exhibits more stable performance.

[0065] In some implementations, reference Figure 5As shown, the number of fasteners 500 in this application can be multiple. These multiple fasteners 500 can be spaced apart along the depth direction of the first cavity 110 of the housing 100 on the sidewall of the first cavity 110, allowing them to be positioned at different heights. Correspondingly, the sidewall of the battery module 200 can face the fasteners 500 on the sidewall of the first cavity 110, facilitating easy connection between the battery module 200 and the fasteners 500. The depth direction of the first cavity 110 is... Figure 2 The X direction in the equation.

[0066] It should be understood that, due to their different models, battery modules 200 have different sizes and capacities, resulting in different heights for different models. By setting multiple fasteners 500 of different heights, battery modules 200 of different heights can be connected to the corresponding fasteners 500, thus ensuring that all models of battery modules 200 can be connected to the fasteners 500 and stably and reliably fixed within the first cavity 110 of the housing 100.

[0067] Specifically, the battery module 200 may include a first battery module and a second battery module, at least one of which may be disposed in the first cavity 110, and at least one of the first battery module and the second battery module has different capacities and sizes. In this way, the battery device of this application can accommodate different battery modules through a single housing 100, improving versatility and thus enhancing the applicability of the battery device of this application.

[0068] Furthermore, when the battery device of this application is applied to a vehicle, the battery module corresponding to different vehicles can be installed in the housing 100 of the battery device, so that the battery device of this application can be matched with different vehicles.

[0069] In addition, multiple fasteners 500 can also be arranged along the circumference of the housing 100 on the side wall of the first cavity 110 of the housing 100, so that the circumferential parts of the battery module 200 are connected to the multiple fasteners 500, making the connection between the battery module 200 and the housing 100 more stable and reliable.

[0070] In some implementations, reference Figure 3 and Figure 7 As shown, in order to connect the battery device to the fixing member 500, the battery module 200 may be provided with a connector 220, which overlaps the fixing member 500 so that the fixing member 500 can support the connector 220. In this way, the contact area between the fixing member 500 and the connector 220 is relatively larger, making the connection between the fixing member 500 and the connector 220 more stable.

[0071] Specifically, both the connector 220 and the fastener 500 can be set as sheet-like structural components, making it easier for the connector 220 and the fastener 500 to overlap, and the structure is more compact and occupies less space.

[0072] In some implementations, reference Figure 7 As shown, to further stabilize the connection between the connector 220 and the fixing member 500, the connector 220 and the fixing member 500 can be threaded together. Specifically, the connector 220 and the fixing member 500 can have corresponding threaded holes. By inserting bolts into the connector 220 and the fixing member 500, the connector 220 and the fixing member 500 can be reliably connected. Furthermore, the bolted connection between the connector 220 and the fixing member 500 also allows for a detachable connection. This means that when the battery module 200 malfunctions, it can be disassembled from the housing 100 for maintenance and replacement.

[0073] The connector 220 and the fastener 500 can also be connected by riveting. Specifically, the connector 220 and the fastener 500 can be provided with corresponding riveting holes. By inserting rivets into the connector 220 and the fastener 500, the connector 220 and the fastener 500 can be reliably connected.

[0074] In some implementations, reference Figure 3 and Figure 4 As shown, the battery module 200 of this application may include multiple sub-modules 210, which may be stacked along the depth direction of the first cavity 110 of the housing 100. Each sub-module 210 is formed by stacking multiple battery cells, and the multiple sub-modules 210 may also be connected in series.

[0075] Specifically, the structures of multiple sub-modules 210 can be set to be consistent, which is beneficial for the mass production of sub-modules 210 and reduces the manufacturing cost of battery module 200.

[0076] It should be understood that the more sub-modules 210 the battery module 200 includes, the higher the battery module 200 formed by stacking multiple sub-modules 210 will be. Thus, when the number of sub-modules 210 included in the battery module 200 is different, the battery module 200 can be connected to the fasteners 500 of different heights so that the battery module 200 can be stably and reliably connected to the housing 100.

[0077] The battery connector 220 can be configured to connect to one of the multiple sub-modules 210, specifically to the uppermost sub-module 210 of the battery module 200. It should be understood that when the battery module 200 is disposed within the first cavity 110 of the housing 100, the uppermost sub-module 210 presses down on the multiple sub-modules 210 below it. By fixing the uppermost sub-module 210 to the housing 100, the overall connection between the battery module 200 and the housing 100 becomes more stable and reliable.

[0078] In some implementations, reference Figure 5 As shown, the battery device of this application may also include a reinforcing rib 700, which is disposed on the housing 100 and can enhance the structural strength of the housing 100. A fastener 500 is disposed on the reinforcing rib 700, so that the fastener 500 can be connected to the housing 100 more stably and reliably.

[0079] Specifically, the reinforcing rib 700 can be a long strip structural component, and the reinforcing rib 700 can be set on the side wall of the first cavity 110 of the housing 100, so that the reinforcing rib 700 can enhance the structural strength of the housing 100. The fastener 500 can be set on the reinforcing rib 700 by welding or threaded connection.

[0080] In some implementations, reference Figure 5 As shown, the battery device of this application may further include a support member 600, which is disposed on the bottom wall of the first cavity 110 of the housing 100. The battery module 200 is disposed on the support member 600, which can support the battery module 200 so that there is a gap between the bottom of the battery module 200 and the bottom wall of the first cavity 110.

[0081] The gap between the battery module 200 and the inner wall of the first cavity 110 can form a heat dissipation channel. This allows heat generated during battery module 200 operation to flow through the gap between the battery module 200 and the bottom wall of the first cavity 110, preventing excessively high temperatures in localized areas within the housing 100. Heat can be conducted to all parts of the housing 100 and dissipated outside the housing 100. This prevents heat generated by the battery module 200 from accumulating inside the housing 100, ensuring that the battery device of this application does not overheat during operation and exhibits more stable performance.

[0082] The support member 600 can specifically adopt a strip structure, and the number of support members 600 can be set to multiple. Multiple support members 600 can be arranged at intervals along the same direction, so that multiple support members 600 can support different parts of the bottom of the battery module 200, making the battery module 200 more stable when it is set on the support member 600.

[0083] In some implementations, reference Figure 3 , Figure 5 and Figure 6 As shown, the battery device of this application may include a first positioning member 610, and the battery module may also include a second positioning member 230. The first positioning member 610 is disposed on the support member 600, and the second positioning member 230 is connected to the sub-module 210 located at the bottommost position in the stacking direction of the multiple sub-modules 210.

[0084] One of the first positioning member 610 and the second positioning member 230 has a positioning hole 231, and the other of the first positioning member 610 and the second positioning member 230 is inserted into the positioning hole 231, and the first positioning member 610 and the second positioning member 230 are connected.

[0085] Specifically, the first positioning member 610 protrudes from the support member 600, and the second positioning member 230 has a positioning hole 231. The first positioning member 610 is inserted into the positioning hole 231 of the second positioning member 230, allowing the first positioning member 610 and the second positioning member 230 to be positioned and engaged. This serves to position the battery module 200 when it is installed in the first cavity 110 of the housing 100, making it easier to install the battery module 200 into place. The connection between the first positioning member 610 and the second positioning member 230 allows the battery module 200 to be fixedly connected to the support member 600.

[0086] In some implementations, reference Figure 4 As shown, the battery module 200 of this application can be provided with a lifting hole 240. The lifting equipment can lift the battery module 200 through the lifting hole 240, thereby lifting the battery module 200 from the first mounting port 120 of the housing 100 into the first cavity 110. This makes the process of installing the battery module 200 into the first cavity 110 simpler and more convenient.

[0087] The number of lifting holes 240 can be set to two, with the two lifting holes 240 located on opposite sides of the battery module 200. The number of lifting holes 240 can also be set to four, with the four lifting holes 240 spaced apart circumferentially along the battery module 200. This application does not limit the number of lifting holes 240.

[0088] In some embodiments, the number of mounting parts 400 in this application can be set to multiple, and multiple mounting parts 400 can be arranged along the circumference of the housing 100. Multiple mounting parts 400 can be connected to the vehicle body, so that the connection between the battery device of this application and the vehicle body is more stable and reliable.

[0089] In some implementations, reference Figure 2As shown, the battery device of this application may also include a lifting component 900, which is connected to the housing 100. The lifting equipment can be connected to the housing 100 via the lifting component 900, thereby lifting the entire battery device onto the vehicle body, making the connection between the battery device and the vehicle body more convenient.

[0090] Both the lifting component 900 and the mounting component 400 can be connected to the housing 100 by welding, so that both the lifting component 900 and the mounting component 400 can be stably and reliably connected to the housing 100.

[0091] In some implementations, reference Figure 2 As shown, the battery device of this application may further include a power distribution module. The housing 100 may also have a second cavity 130 and a second mounting port 140. The second cavity 130 is separated from the first cavity 110, and the second mounting port 140 communicates with the second cavity 130. The power distribution module is disposed in the second cavity 130 and is electrically connected to the battery module 200. A second cover plate 800 is detachably disposed in the second mounting port 140, so that the second cover plate 800 can block the second mounting port 140, thereby enclosing the power distribution module in the second cavity 130.

[0092] The housing 100 also has a wire hole that connects the first cavity 110 and the second cavity 130. The battery module 200 and the power distribution module can be electrically connected by a wire harness. The wire harness can pass through the wire hole to connect the power distribution module and the battery module 200.

[0093] This application also proposes a vehicle, including a body and the aforementioned battery assembly. The vehicle can be a forklift.

[0094] It should be noted that the terms "one embodiment," "embodiment," "exemplary embodiment," "some embodiments," etc., mentioned in the specification indicate that the described embodiment may include a specific feature, structure, or characteristic, but not every embodiment necessarily includes that specific feature, structure, or characteristic. Furthermore, such phrases do not necessarily refer to the same embodiment. Moreover, when a specific feature, structure, or characteristic is described in connection with an embodiment, implementing such a feature, structure, or characteristic in conjunction with other embodiments, whether explicitly described or not, is within the knowledge scope of those skilled in the art.

[0095] Generally speaking, terms should be understood at least in part by their use in context. For example, at least in part by context, the term "one or more" as used in the text can be used to describe any feature, structure, or characteristic of the singular meaning, or a combination of features, structures, or characteristics of the plural meaning. Similarly, at least in part by context, terms such as "a" or "the" can also be understood to convey either singular or plural usage.

[0096] It should be readily understood that the terms “on,” “above,” and “on top of” in this application should be interpreted in the broadest possible sense, such that “on” means not only “directly on something” but also “on something” with an intermediate feature or layer therebetween, and that “above” or “on top of” means not only “on something” but also “on something” without an intermediate feature or layer therebetween (i.e., directly on something).

[0097] Furthermore, for ease of explanation, spatially relative terms such as "below," "below," "under," "above," and "above" may be used to describe the relationship of one element or feature relative to other elements or features as shown in the figures. Spatially relative terms are intended to encompass different orientations of the device in use or operation other than those shown in the figures. The device may have other orientations (rotated 90° or in other orientations), and the spatially relative descriptive terms used herein may be interpreted accordingly.

[0098] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A battery device, characterized in that, include: The housing (100) has a first cavity (110) and a first mounting port (120), the first mounting port (120) is connected to the first cavity (110), and the housing (100) is an integral structure; the first cavity (110) is adapted to install a battery module (200), and the battery module (200) is connected to the housing (100); A first cover plate (300) is connected to the housing (100) so that the first cover plate (300) seals the first mounting port (120).

2. The battery device according to claim 1, characterized in that, The battery device further includes a fixing member (500), which is disposed on the inner wall of the first cavity (110) and is detachably connected to the battery module (200).

3. The battery device according to claim 2, characterized in that, The battery module (200) includes a connector (220) that overlaps the fastener (500) to detachably connect the battery module (200) to the housing (100).

4. The battery device according to claim 3, characterized in that, The number of the fixing members (500) is multiple, and the multiple fixing members (500) are spaced apart on the side wall of the first cavity (110) along the depth direction of the first cavity (110), and at least one of the multiple fixing members (500) is connected to the battery module (200).

5. The battery device according to claim 4, characterized in that, The battery module (200) includes multiple sub-modules (210), which are stacked sequentially along the depth direction of the first cavity (110). The connector (220) is connected to the uppermost sub-module (210) among the multiple sub-modules (210).

6. The battery device according to claim 4, characterized in that, The battery module (200) includes a first battery module and a second battery module, wherein the first battery module and / or the second battery module are disposed in the first cavity (110), and at least one of the capacity and size of the first battery module and the second battery module is different.

7. The battery device according to any one of claims 2-6, characterized in that, The battery device further includes a reinforcing rib (700), which is disposed on the housing (100), and the fastener (500) is disposed on the reinforcing rib (700).

8. The battery device according to any one of claims 1-6, characterized in that, The battery device further includes a support member (600) disposed on the bottom wall of the first cavity (110), and the battery module (200) disposed on the support member (600) such that the bottom of the battery module (200) has a gap with the bottom wall of the first cavity (110).

9. The battery device according to claim 8, characterized in that, The battery module (200) is fixedly connected to the support member (600).

10. The battery device according to claim 9, characterized in that, The battery device further includes a first positioning member (610), and the battery module (200) further includes a second positioning member (230). The first positioning member (610) is disposed on the support member (600), and the second positioning member (230) is disposed on the bottom of the battery module (200). One of the first positioning member (610) and the second positioning member (230) has a positioning hole (231), and the other of the first positioning member (610) and the second positioning member (230) is inserted into the positioning hole (231), and the first positioning member (610) and the second positioning member (230) are connected.

11. The battery device according to any one of claims 1-6, characterized in that, The battery module (200) has multiple mounting holes (240) arranged along the circumference of the battery module (200).

12. The battery device according to any one of claims 1-6, characterized in that, The battery device also includes a power distribution module, which is disposed in the housing (100) and electrically connected to the battery module (200).

13. The battery device according to claim 12, characterized in that, The battery device further includes a second cover plate (800), the housing (100) has a second cavity (130) and a second mounting port (140), the second mounting port (140) communicates with the second cavity (130), the housing (100) has a wire hole communicating with the second cavity (130) and the first cavity (110), the power distribution module is disposed in the second cavity (130), and the second cover plate (800) is detachably disposed in the second mounting port (140).

14. The battery device according to any one of claims 1-5, characterized in that, The battery device also includes a mounting component (400) disposed on the outer wall of the housing (100) and used for connection with the vehicle body; Alternatively, the battery device may further include a mounting member (400) disposed on the outer wall of the housing (100), the mounting member (400) being used to connect to the vehicle body, and the number of mounting members (400) being multiple, the multiple mounting members (400) being arranged circumferentially along the housing (100).

15. A vehicle, characterized in that, It includes a vehicle body and a battery device as described in any one of claims 1-14, wherein the battery device is disposed on the vehicle body.

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