Battery pack shell

Abstract

The utility model discloses a battery pack shell which comprises a shell body and an upper cover, the upper cover is connected with the shell body to form a containing cavity, the containing cavity is provided with a first cavity body and a second cavity body, the first cavity body and the second cavity body are separated in a sealed mode, the first cavity body is used for installing electrical components, and the second cavity body is used for installing a battery assembly. The accommodating cavity of the battery pack shell is divided into the first cavity and the second cavity, and the first cavity and the second cavity are hermetically separated, so that smoke can be prevented from entering the first cavity from the second cavity, and the use safety of the battery is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, in particular to a battery pack shell. Background Art

[0002] In order to facilitate the partitioning and installation of battery modules and electrical components, in the related art, electrical components and battery components are installed in the battery pack shell. However, the electrical components and battery components are interconnected, so that when the battery components expand and deform, they are easy to squeeze the electrical components. At the same time, when the battery module has thermal runaway, smoke will enter the electrical components, affecting the safety of battery use. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model provides a battery pack shell, wherein the accommodating cavity of the battery pack shell is divided into a first cavity and a second cavity, and the first cavity and the second cavity are sealed and separated, which can prevent smoke from entering the first cavity from the second cavity, thereby improving the safety of battery use.

[0004] According to the battery pack shell of the embodiment of the utility model, it includes a shell and an upper cover, the upper cover is connected to the shell to form a accommodating cavity, the accommodating cavity has a first cavity and a second cavity, the first cavity and the second cavity are sealed and separated, the first cavity is used to install electrical components, and the second cavity is used to install battery components.

[0005] According to the battery pack shell of the utility model, the accommodating cavity is sealed and divided into a first cavity for installing electrical components and a second cavity for installing battery assemblies. When the battery assembly expands and deforms, the electrical components are not easily squeezed, and when the battery assembly has thermal runaway, smoke is not easily able to enter the first cavity from the second cavity, thereby improving the safety of battery use.

[0006] According to some embodiments of the utility model, the first cavity and the second cavity are separated by a first partition, and the first partition has an installation port, which connects the first cavity and the second cavity, and is used to install a bus; the installation port is provided with a seal, and the seal seals the installation port and the bus.

[0007] According to some embodiments of the present invention, the shell has a first opening, the upper cover is disposed on the first opening, the first partition is connected to the first opening, and the first partition and the upper cover form a first cavity.

[0008] According to some embodiments of the present invention, the shell includes a body and a bottom plate, the body has a second opening; the bottom plate covers the second opening; the bottom plate, the first partition plate and the body form a second cavity.

[0009] According to some embodiments of the present invention, a second partition is further included, and the second partition is arranged in the second cavity to separate the second cavity into a third cavity for installing the battery module and a fourth cavity for installing the battery management system.

[0010] According to some embodiments of the present invention, one end of the second partition is connected to the first partition, and the other end is connected to the bottom plate, so that the third cavity and the fourth cavity are connected to the outside of the battery pack shell through the second opening respectively.

[0011] According to some embodiments of the present invention, the peripheral side of the first partition is welded and fixed to the shell; the first partition has a connecting port, and the second partition is welded to the connecting port.

[0012] According to some embodiments of the utility model, it also includes a mounting bracket, which is arranged in the fourth cavity and is used to install the battery management system; along the direction from the first opening to the second opening, the mounting bracket is slidably connected to the second partition.

[0013] According to some embodiments of the utility model, one of the mounting bracket and the second partition is provided with a sliding protrusion, and the other is provided with a sliding groove matching the sliding protrusion, and the sliding protrusion is slidably connected with the sliding groove; along the thickness direction of the second partition, the sliding protrusion and the sliding groove are limitedly connected.

[0014] According to some embodiments of the utility model, the bottom plate has a supporting surface and a connecting surface; the connecting surface surrounds the supporting surface and is supported below the connecting surface; the bottom plate is connected to the body via a connecting piece installed on the connecting surface.

[0015] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic structural diagram of a battery pack housing according to an embodiment of the present application;

[0017] Figure 2 is a cross-sectional view of a battery pack housing according to an embodiment of the present application;

[0018] Figure 3 is a schematic structural diagram of a battery pack housing according to an embodiment of the present application without an upper cover installed;

[0019] Figure 4 is a bottom view of a battery pack housing according to an embodiment of the present application without a bottom plate installed;

[0020] Figure 5 is a schematic diagram of the connection between the first partition, the bottom plate and the second partition of the battery pack housing according to an embodiment of the present application;

[0021] Figure 6is a cross-sectional view of an energy storage device according to an embodiment of the present application.

[0022] Reference numerals:

[0023] Battery pack housing 100,

[0024] Shell 10, accommodating cavity 10a, first cavity 10a1, second cavity 10a2, third cavity 10a3, fourth cavity 10a4, body 11, first opening 11a, second opening 11b, bottom plate 12, supporting surface 12a, connecting surface 12b,

[0025] Upper cover 20,

[0026] The first partition 30, the installation port 31, the connection port 32,

[0027] The second partition plate 40, the slide groove 41, the mounting bracket 50, the slide protrusion 51, the connecting member 60,

[0028] Energy storage device 1000 , electrical component 200 , battery assembly 300 , battery module 301 , battery management system 302 . DETAILED DESCRIPTION

[0029] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0030] The disclosure below provides many different embodiments or examples for realizing different structures of the utility model. In order to simplify the disclosure of the utility model, the components and settings of specific examples are described below. Of course, they are merely examples, and the purpose is not to limit the utility model. In addition, the utility model can repeat reference numbers and / or letters in different examples. This repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the utility model provides various specific examples of processes and materials, but those of ordinary skill in the art can be aware of the applicability of other processes and / or the use of other materials.

[0031] A battery pack housing 100 according to an embodiment of the present invention will be described below with reference to the accompanying drawings.

[0032] Reference Figure 1 and Figure 2According to the battery pack shell 100 of the embodiment of the utility model, it includes a shell 10 and an upper cover 20. The upper cover 20 is connected to the shell 10 to form a accommodating cavity 10a. The accommodating cavity 10a has a first cavity 10a1 and a second cavity 10a2. The first cavity 10a1 and the second cavity 10a2 are sealed and separated. The first cavity 10a1 is used to install the electrical component 200, and the second cavity 10a2 is used to install the battery assembly 300.

[0033] Specifically, refer to Figure 1 and Figure 2 The battery pack housing 100 in the embodiment of the utility model includes a housing 10, which is used to protect the electrical components 200 and the battery assembly 300 in the housing 10. The shape and structure of the housing 10 are not limited, and can be cylindrical, rectangular, cubic, irregular, etc., and can be designed according to actual needs.

[0034] Reference Figure 1 and Figure 2 The accommodating cavity 10a is divided into a first cavity 10a1 and a second cavity 10a2. The first cavity 10a1 is used to install the electrical component 200, and the second cavity 10a2 is used to install the battery assembly 300. In this way, the electrical component 200 and the battery assembly 300 can be installed in separate cavities without interfering with each other. The first cavity 10a1 and the second cavity 10a2 are sealed and separated. In this way, when the battery assembly 300 expands and deforms, it is not easy to squeeze the electrical component 200, and it is not easy to cause an unsafe accident. At the same time, the first cavity 10a1 and the second cavity 10a2 are sealed and separated, so that when the battery assembly 300 has thermal runaway, smoke is not easy to enter the cavity from the second cavity 10a2, and will not affect the electrical component 200, thereby improving the safety of battery use.

[0035] In some embodiments of the present invention, referring to Figure 3 and Figure 5 The first cavity 10a1 and the second cavity 10a2 are separated by a first partition 30. The first partition 30 has an installation port 31. The installation port 31 connects the first cavity 10a1 and the second cavity 10a2. The installation port 31 is used to install the bus. The installation port 31 is provided with a seal, which seals the installation port 31 and the bus.

[0036] The accommodating cavity 10a is divided into a first cavity 10a1 and a second cavity 10a2 by a first partition 30, so as to improve the separation strength. A mounting opening 31 connecting the first cavity 10a1 and the second cavity 10a2 is provided on the first partition 30, so as to install a bus bar at the mounting opening 31, so as to realize the electrical connection between the electrical component 200 in the first cavity 10a1 and the battery assembly 300 in the second cavity 10a2. A sealing member for sealingly connecting the mounting opening 31 and the bus bar is provided at the mounting opening 31, so as to seal and separate the first cavity 10a1 and the second cavity 10a2.

[0037] Specifically, the first partition 30 can be connected to the shell 10, or to the upper cover 20, or to the shell 10 and the upper cover 20 respectively. In the present application, the first partition 30 is connected to the shell 10. There can be one or more mounting openings 31. In the present application, there is one mounting opening 31 to improve the structural strength of the first partition 30, and at the same time, reduce the setting of the sealing member and simplify the structure.

[0038] The installation opening 31 can be arranged at any position of the first partition plate 30 as long as it can connect the first cavity 10a1 and the second cavity 10a2. In the present application, the installation opening 31 is arranged near the battery module 301 to shorten the connection path with the battery module 301 and reduce the setting of the wiring harness.

[0039] In the present application, a sealing member is filled in the installation opening 31 . The sealing member may be sealing cotton, potting glue, etc., which improves the sealing performance and the structural strength of the first partition plate 30 .

[0040] In some embodiments of the present invention, referring to Figure 1 , Figure 2 and Figure 3 The housing 10 has a first opening 11 a , a first partition plate 30 is connected to the first opening 11 a , and the first partition plate 30 and the upper cover 20 form a first cavity 10 a 1 .

[0041] The first partition plate 30 and the upper cover 20 form the first cavity 10a1, so that the electrical component 200 can be installed and maintained from one side of the upper cover 20. The first partition plate 30 is fixedly connected to the first opening 11a, which is convenient for installation and connection, and is convenient for connecting the upper cover 20, and is convenient for production and processing.

[0042] In some embodiments of the present invention, the housing 10 includes a body 11 and a bottom plate 12 . The body 11 has a second opening 11 b . The bottom plate 12 covers the second opening 11 b . The bottom plate 12 , the first partition plate 30 and the body 11 form a second cavity 10 a 2 .

[0043] By providing the second opening 11 b and connecting the bottom plate 12 to the second opening 11 b , it is convenient to install and remove the battery module 301 and / or the battery management system 302 through the second opening 11 b .

[0044] Specifically, the bottom plate 12 and the second opening 11b may be detachably connected, threadedly connected, snap-fitted, etc. via the connecting member 60. The second opening 11b and the first opening 11a may be arranged opposite to each other.

[0045] In some embodiments of the present invention, referring to Figure 2 and Figure 4The battery pack housing 100 further includes a second partition 40 , which is disposed in the second cavity 10a2 to separate the second cavity 10a2 into a third cavity 10a3 for installing the battery module 301 and a fourth cavity 10a4 for installing the battery management system 302 .

[0046] By disposing a second partition plate 40 in the second cavity 10a2, the second cavity 10a2 is divided into a third cavity 10a3 for installing the battery module 301 and a fourth cavity 10a4 for installing the battery management system 302, so that the battery module 301 and the battery management system 302 are installed separately.

[0047] Specifically, the first partition plate 30 and the second partition plate 40 can be arranged in parallel or at a certain angle, for example, at an angle of 30°, 60°, 90°, 120°, 150°, etc. When the second partition plate 40 and the first partition plate 30 are arranged at a certain angle, they can be connected to each other or arranged at intervals and connected to the housing 10 respectively.

[0048] In some embodiments of the present invention, referring to Figure 4 and Figure 5 One end of the second partition 40 is connected to the first partition 30, and the other end is connected to the bottom plate 12, so that the third cavity 10a3 and the fourth cavity 10a4 are connected to the outside of the battery pack housing 100 through the second opening 11b respectively.

[0049] By connecting one end of the second partition 40 to the first partition 30 and the other end to the bottom plate 12, the battery module 301 and the battery management system 302 can be installed through the second opening 11b, which is convenient for installation, maintenance and disassembly.

[0050] Specifically, the second partition plate 40 can be connected to the bottom plate 12 at a certain angle, for example, the angle between the second partition plate 40 and the bottom plate 12 can be 30°, 60°, 90°, etc. Preferably, the angle between the second partition plate 40 and the bottom plate 12 is 90° to improve the space utilization of the third cavity 10a3 and the fourth cavity 10a4.

[0051] In some embodiments of the present invention, referring to Figure 3 and Figure 5 The peripheral side of the first partition plate 30 is welded and fixed to the shell 10 ; the first partition plate 30 has a connecting port 32 , and the second partition plate 40 is welded to the connecting port 32 .

[0052] The first partition plate 30 is welded and fixed to the shell 10 by the peripheral side thereof, thereby improving the connection strength between the first partition plate 30 and the shell 10. The first partition plate 30 is provided with a connection port 32, so that the second partition plate 40 is conveniently welded to the connection port 32, and the second partition plate 40 is welded to the connection port 32, thereby improving the connection strength between the second partition plate 40 and the first partition plate 30.

[0053] Specifically, the first partition plate 30 is fully welded to the shell 10 in the circumference. The welding method may be arc welding, argon arc welding, CO2 shielded welding, oxygen-acetylene welding, laser welding, etc. The connection port 32 may be one or more. Preferably, there are multiple connection ports 32, and the multiple connection ports 32 are arranged at intervals.

[0054] In some embodiments of the present invention, referring to Figure 4 and Figure 5 The battery pack housing 100 further includes a mounting bracket 50, which is disposed in the fourth cavity 10a4 and is used to mount the battery management system 302; along the direction from the first opening 11a to the second opening 11b, the mounting bracket 50 is slidably connected to the second partition plate 40.

[0055] The battery management system 302 can be easily installed in the fourth cavity 10a4 by providing the mounting bracket 50. The mounting bracket 50 and the second partition plate 40 are slidably connected along the direction from the first opening 11a to the second opening 11b, so that the mounting bracket 50 with the battery management system 302 installed can be easily slid into the fourth cavity 10a4.

[0056] Specifically, the mounting bracket 50 can be connected to the body 11, or to the second partition 40, or to the body 11 and the second partition 40. The mounting bracket 50 can be slidably connected to the second partition 40 through a slide rail, a slide groove 41, etc. After the shell 10 is installed, one end of the mounting bracket 50 is pressed against the first partition 30, and the other end is pressed against the bottom plate 12, so that the mounting bracket 50 is stably connected between the first partition 30 and the bottom plate 12.

[0057] In some embodiments, the first partition plate 30 is disposed in parallel with the bottom plate 12 , and the length of the mounting bracket 50 along the direction from the first opening 11 a to the second opening 11 b is the same as the distance between the first partition plate 30 and the bottom plate 12 .

[0058] In some embodiments of the present invention, referring to Figure 4 One of the mounting bracket 50 and the second partition 40 is provided with a sliding protrusion 51, and the other is provided with a sliding groove 41 matching the sliding protrusion 51. The sliding protrusion 51 is slidably connected with the sliding groove 41, thereby realizing the sliding connection between the mounting bracket 50 and the second partition 40; along the thickness direction of the second partition 40, the sliding protrusion 51 and the sliding groove 41 are limitedly connected, so that the mounting bracket 50 and the second partition 40 are not easy to separate when sliding.

[0059] Specifically, the mounting bracket 50 may be provided with a sliding protrusion 51, and in this case, the second partition plate 40 is provided with a sliding groove 41; or the mounting bracket 50 is provided with a sliding groove 41, and in this case, the second partition plate 40 is provided with a sliding protrusion 51. The sliding protrusion 51 and the sliding groove 41 may be a dovetail structure; or the sliding protrusion 51 may include two L-shaped clamping protrusions arranged opposite to each other, and the sliding groove 41 may include a clamping groove matched with the clamping protrusion.

[0060] In some embodiments of the present invention, the bottom plate 12 has a supporting surface 12a and a connecting surface 12b; the connecting surface 12b surrounds the supporting surface 12a and is supported below the connecting surface 12b; the bottom plate 12 is connected to the body 11 via a connecting piece 60 installed on the connecting surface 12b.

[0061] By dividing the bottom plate 12 into a support surface 12a and a connection surface 12b, and the connection surface 12b surrounds the support surface 12a and supports it below the connection surface 12b, the entire support surface 12a can be used to support the battery pack shell 100 and the components inside the battery pack shell 100, thereby improving the support strength. The bottom plate 12 is connected to the main body 11 through a connector 60 installed on the connection surface 12b, which does not affect the force of each connector 60 and is conducive to subsequent disassembly and assembly. The connection surface 12b surrounds the support surface 12a, and the support surface 12a is lower than the connection surface 12b. In this way, it is convenient to install the lowest point of the connector 60 above the connection surface 12b, and the support surface 12a is concentrated in the middle, and the support stability is high. The bottom plate 12 is detachably connected to the main body 11 through the connector 60, which is convenient for installation and disassembly, and convenient for opening the second cavity 10a2.

[0062] In some embodiments, reference Figure 2 and Figure 5 The bottom plate 12 and the body 11 may also be connected in other detachable ways, such as snap connection, threaded connection, etc.

[0063] In some embodiments, there are multiple connectors 60, and the multiple connectors 60 are arranged at intervals to improve the connection strength.

[0064] In some embodiments, the connecting member 60 may be disposed in a groove, the bottom surface of the groove being higher than the supporting surface 12a, or may be disposed on the connecting surface 12b, the connecting surface 12b being higher than the supporting surface 12a.

[0065] In some embodiments, reference Figure 6 The battery pack housing 100 in the above embodiment can be applied to an energy storage device 1000, which further includes an electrical component 200 and a battery assembly 300. The electrical component 200 is installed in the first cavity 10a1, and the battery assembly 300 is installed in the second cavity 10a2.

[0066] The energy storage device 1000 protects the electrical components 200 and improves the safety of the energy storage device 1000 by adopting the battery pack housing 100 in the above embodiment.

[0067] Specifically, refer to Figure 6 The second cavity 10a2 includes a third cavity 10a3 and a fourth cavity 10a4 which are separated from each other. The battery assembly 300 includes a battery module 301 and a battery management system 302. The battery module 301 is arranged in the third cavity 10a3, and the battery management system 302 is arranged in the fourth cavity 10a4.

[0068] As an embodiment, the energy storage device 1000 can be a battery pack, and the specific installation method of the battery pack includes: step 1, inverting the battery pack housing 100; step 2, using a fixture to direct the end of the battery module 301 connected to the busbar toward the first partition 30, and install it in the third cavity 10a2 along the direction from the second opening 11b to the first opening 11a, and seal the busbar in the installation port 31; step 3, injecting potting glue through the potting glue flow channel; step 4, connecting the wiring harness of the battery module 301 with the battery management system 302 at the end of the second opening 11b, and then sliding the battery management system 302 into the fourth cavity 10a4; step 5, connecting the bottom plate 12 with the body 11 through the connector 60, waiting for the potting glue to meet the curing requirements, and then flipping the battery pack housing 100. In some embodiments, the energy storage device 1000 in the above embodiment can be applied to electrical equipment.

[0069] By adopting the energy storage device 1000 in the above embodiment, the safety of the electrical equipment is improved.

[0070] Specifically, the electrical equipment may be a charging vehicle, a charging appliance, etc.

[0071] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0072] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" 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, an electrical connection, or a communication; 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 present invention can be understood according to specific circumstances.

[0073] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or means that the first feature is lower in level than the second feature.

[0074] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0075] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A battery pack housing, characterized in that: include: A housing (10), the housing comprising a body (11) and a bottom plate (12); An upper cover (20), wherein the upper cover (20) is connected to the shell (10) to form a accommodating cavity (10a), wherein the accommodating cavity (10a) has a first cavity (10a1) and a second cavity (10a2), wherein the first cavity (10a1) and the second cavity (10a2) are sealed and separated, wherein the first cavity (10a1) is used to install an electrical component (200), and the second cavity (10a2) is used to install a battery assembly (300).

2. The battery pack housing according to claim 1, characterized in that: The first cavity (10a1) and the second cavity (10a2) are separated by a first partition (30), the first partition (30) having an installation opening (31), the installation opening (31) communicating the first cavity (10a1) and the second cavity (10a2), the installation opening (31) being used to install a busbar; The installation opening (31) is provided with a sealing member, and the sealing member seals and connects the installation opening (31) and the busbar.

3. The battery pack housing according to claim 2, characterized in that: The shell (10) has a first opening (11a), the upper cover (20) is covered on the first opening (11a), the first partition (30) is connected to the first opening (11a), and the first partition (30) and the upper cover (20) form the first cavity (10a1).

4. The battery pack housing according to claim 2, characterized in that: The housing (10) comprises: A body (11), wherein the body (11) has a second opening (11b); A bottom plate (12), the bottom plate (12) being arranged to cover the second opening (11b); The bottom plate (12), the first partition plate (30) and the main body (11) form the second cavity (10a2).

5. The battery pack housing according to claim 4, characterized in that: The invention also includes a second partition (40), wherein the second partition (40) is arranged in the second cavity (10a2) to separate the second cavity (10a2) into a third cavity (10a3) for installing the battery module (301) and a fourth cavity (10a4) for installing the battery management system (302).

6. The battery pack casing according to claim 5, characterized in that: One end of the second partition (40) is connected to the first partition (30), and the other end is connected to the bottom plate (12), so that the third cavity (10a3) and the fourth cavity (10a4) are connected to the outside of the battery pack housing (100) through the second opening (11b) respectively.

7. The battery pack casing according to claim 5, characterized in that: The peripheral side of the first partition plate (30) is welded and fixed to the shell (10); The first partition plate (30) has a connection port (32), and the second partition plate (40) is welded to the connection port (32).

8. The battery pack casing according to claim 7, characterized in that: It also includes a mounting bracket (50), the mounting bracket (50) being arranged in the fourth cavity (10a4) and being used for mounting the battery management system (302); Along the direction from the first opening (11a) to the second opening (11b), the mounting bracket (50) is slidably connected to the second partition plate (40).

9. The battery pack casing according to claim 8, characterized in that: One of the mounting bracket (50) and the second partition plate (40) is provided with a sliding protrusion (51), and the other is provided with a sliding groove (41) matched with the sliding protrusion (51), and the sliding protrusion (51) is slidably connected to the sliding groove (41); Along the thickness direction of the second partition plate (40), the sliding protrusion (51) is position-limitingly connected to the sliding groove (41).

10. The battery pack housing according to claim 4, characterized in that: The bottom plate (12) has a supporting surface (12a) and a connecting surface (12b); The connecting surface (12b) surrounds the supporting surface (12a), and the supporting surface (12a) is lower than the connecting surface (12b); The bottom plate (12) and the main body (11) are connected via a connecting piece (60) installed on the connecting surface (12b).

Images