Battery pack box body and battery pack

Abstract

The utility model provides a battery pack box body and a battery pack, relates to the technical field of batteries, and solves the technical problem that a box cover of a battery pack box body is easy to arch in the prior art. The battery pack box body comprises a lower box body and a box cover, wherein one end of the lower box body along a first direction is provided with an opening; the box cover covers the opening of the lower box body in a closed mode, pressing strips are arranged on the surfaces of the overlapped areas of the box cover and the lower box body in the four directions, a plurality of reinforcing ribs are arranged on the pressing strips at intervals along the same horizontal line, and fasteners sequentially penetrate through the pressing strips and the box cover to be connected to the lower box body in the areas avoiding the reinforcing ribs. The pressing strip is arranged on the surface of the overlapped area of the box cover and the lower box body, and the multiple reinforcing ribs are arranged on the pressing strip, so that the box cover can be reinforced through the pressing strip, the box cover is not prone to arching during installation, and installation is more accurate, convenient and rapid.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, and particularly relates to a battery pack box body and a battery pack. Background Art

[0002] As an important part of new energy batteries, the battery pack box body can isolate the battery cells from the outside world and protect the battery cells. In related technologies, the battery pack box cover is usually large in volume and thin in thickness. When the battery pack box cover is fixed to the battery pack box body, a sealing ring is clamped between the box cover and the battery pack box body, and then bolts are used for connection and cooperation. However, due to the large deformation amount of the sealing ring during installation and the thin thickness of the steel plate used for the box cover, the box cover often arches between two adjacent bolts. Summary of the Utility Model

[0003] The purpose of this application is to provide a battery pack box body and a battery pack to solve the technical problem that the box cover of the battery pack box body is prone to arching in the prior art. The many technical effects that can be produced by the preferred technical solutions provided by the utility model are described in detail below.

[0004] To achieve the above purpose, the utility model provides the following technical solutions:

[0005] In a first aspect, a battery pack box body provided by this application includes: a lower box body and a box cover. One end of the lower box body in a first direction has an opening; the box cover is hermetically closed to the opening of the lower box body, and pressure strips are provided on the surfaces of the overlapping areas in four directions between the box cover and the lower box body. A plurality of reinforcing ribs are arranged at intervals along the same horizontal line on the pressure strips. In the area where the reinforcing ribs are avoided, fasteners sequentially pass through the pressure strips and the box cover and are connected to the lower box body.

[0006] In one or more embodiments of this application, a plurality of third fixing holes are opened in the area of the pressure strip where the reinforcing ribs are avoided. First fixing holes and second fixing holes corresponding to the third fixing holes are respectively opened on the lower box body and the box cover. The fasteners sequentially pass through the third fixing holes, the second fixing holes and the first fixing holes to fix the box cover to the lower box body.

[0007] In one or more embodiments of this application, the pressure strip is strip-shaped; the reinforcing ribs protrude in a direction away from the box cover.

[0008] In one or more embodiments of this application, the height of the reinforcing ribs protruding in a direction away from the box cover is 1-5 mm.

[0009] In one or more embodiments of this application, the width of the pressure strip is not less than the maximum diameter of the head of the fastener.

[0010] In one or more embodiments of the present application, an annular seal is provided between the connection surface of the box cover and the lower box body.

[0011] In one or more embodiments of the present application, the lower box body includes a frame body and a bottom guard plate provided at one end of the frame body away from the box cover. Among them, press strips are provided on the surfaces of the overlapping regions of the bottom guard plate and the frame body in four directions. A plurality of reinforcing ribs are arranged at intervals along the same horizontal line on the press strips. In the regions where the reinforcing ribs are avoided, fasteners sequentially pass through the press strips and the bottom guard plate and are connected to the frame body.

[0012] In one or more embodiments of the present application, a plurality of third fixing holes are provided in the regions of the press strips where the reinforcing ribs are avoided. Fourth fixing holes and fifth fixing holes corresponding to the third fixing holes are respectively provided on the frame body and the bottom guard plate. The fasteners sequentially pass through the third fixing holes, the fifth fixing holes, and the fourth fixing holes to fix the bottom guard plate to the frame body.

[0013] And the reinforcing ribs protrude in a direction away from the bottom guard plate.

[0014] In one or more embodiments of the present application, an annular seal is provided between the connection surface of the bottom guard plate and the frame body.

[0015] In a second aspect, the present application provides a battery pack, including the battery pack box body according to any one of the first aspect.

[0016] Based on the above technical solutions, the battery pack box body and the battery pack provided by the present application at least have the following beneficial technical effects:

[0017] The battery pack box body provided by the embodiments of the present application includes a lower box body and a box cover. One end of the lower box body has an opening in the first direction; the box cover is hermetically closed to the opening of the lower box body, and press strips are provided on the surfaces of the overlapping regions of the box cover and the lower box body in four directions. A plurality of reinforcing ribs are arranged at intervals along the same horizontal line on the press strips. In the regions where the reinforcing ribs are avoided, fasteners sequentially pass through the press strips and the box cover and are connected to the lower box body. By providing press strips on the surfaces of the overlapping regions of the box cover and the lower box body in the present application, and providing a plurality of reinforcing ribs on the press strips, the box cover can be strengthened by the press strips, and it is not easy for the box cover to arch during installation. The reinforcing ribs on the press strips can further strengthen the press strips and are not easy to bend with the box cover, making the installation more accurate and convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0019] Figure 1 It is a schematic three-dimensional structure diagram of a battery pack housing in one or more embodiments of the present application;

[0020] Figure 2 is Figure 1 the enlarged view at position A in

[0021] Figure 3 It is an exploded view of a battery pack housing in one or more embodiments of the present application;

[0022] Figure 4 is Figure 3 the enlarged view at position B in

[0023] Figure 5 It is a schematic three-dimensional structure diagram of another perspective of a battery pack housing in one or more embodiments of the present application;

[0024] Figure 6 is Figure 5 the enlarged view at position C in

[0025] Figure 7 It is an exploded view of the bottom perspective of a battery pack housing in one or more embodiments of the present application;

[0026] Figure 8 is Figure 7 the enlarged view at position D in

[0027] In the figure: 10 - box cover; 20 - lower box body; 30 - pressing strip; 40 - fastener; 50 - seal; 101 - second fixing hole; 200 - frame body; 201 - first fixing hole; 202 - fourth fixing hole; 210 - bottom protection plate; 211 - fifth fixing hole; 301 - reinforcing rib; 302 - third fixing hole; 401 - head; 501 - sixth fixing hole. Detailed implementation manners

[0028] To make the objectives, technical solutions and advantages of the present utility model clearer, the technical solutions of the present utility model will be described in detail below. Apparently, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other implementation manners obtained by those of ordinary skill in the art without creative efforts shall fall within the scope protected by the present utility model.

[0029] In the related art, the cover of the battery pack box body is usually formed by stamping a steel plate. The thickness of the cover is relatively thin, and the common thickness is 0.8 mm. Since the length of most battery packs is greater than 1000 mm, the volume of the steel plate required for the cover is also relatively large. When installing the cover onto the lower box body, a sealing ring is provided between the cover and the lower box body, and then fasteners such as bolts are used for connection and cooperation. Since the deformation amount of the sealing ring during installation is relatively large and the thickness of the cover is relatively thin, the cover often bulges between two adjacent fasteners.

[0030] Based on the above considerations, in order to solve the technical problem that the cover of the battery pack box body in the prior art is prone to bulging, the present application provides a battery pack box body, including a lower box body and a cover. One end of the lower box body in the first direction has an opening; the cover is hermetically closed to the opening of the lower box body, and pressing strips are provided on the surfaces of the overlapping areas in four directions between the cover and the lower box body. A plurality of reinforcing ribs are arranged at intervals along the same horizontal line on the pressing strips. In the area avoiding the reinforcing ribs, the fasteners sequentially pass through the pressing strips and the cover and are connected to the lower box body.

[0031] In the technical solution of the embodiment of the present application, by providing pressing strips on the surfaces of the overlapping areas between the cover and the lower box body, and providing a plurality of reinforcing ribs on the pressing strips, the pressing strips can play a strengthening role on the cover, and the problem that the cover is not easily bulged during installation can be solved. The reinforcing ribs on the pressing strips can further strengthen the pressing strips and are not easily bent following the cover, making the installation more accurate and convenient.

[0032] The battery pack box body of the present application is applicable to various battery packs, including but not limited to battery packs used in the field of electric vehicles, and the battery pack box body disclosed in the present application can also be used to accommodate battery packs in other electric transportation tools or electric devices.

[0033] The technical solution of the embodiment of the present application will be described in detail below with reference to the accompanying drawings of the specification.

[0034] Please refer to Figure 1 and Figure 2 , the embodiment of the present application provides a battery pack box body, including: a lower box body 20 and a cover 10. One end of the lower box body 20 in the first direction has an opening; the cover 10 is hermetically closed to the opening of the lower box body 20, and pressing strips 30 are provided on the surfaces of the overlapping areas in four directions between the cover 10 and the lower box body 20. A plurality of reinforcing ribs 301 are arranged at intervals along the same horizontal line on the pressing strips 30. In the area avoiding the reinforcing ribs 301, the fasteners 40 sequentially pass through the pressing strips 30 and the cover 10 and are connected to the lower box body 20.

[0035] It can be understood that the lower box body 20 can be formed by splicing multiple plates or die-cast. The interior of the lower box body 20 has a cavity that can accommodate the battery pack. At one end of the lower box body 20 along the first direction, there is an opening so that the battery pack can be placed into the cavity of the lower box body 20 from this opening. The first direction can be the thickness direction of the battery pack box body. The box cover 10 can be a structural member that closes the opening of the lower box body 20 to isolate the battery pack in the cavity from the outside. On the surfaces of the overlapping regions of the box cover 10 and the lower box body 20 in four directions, there are pressure strips 30. The "overlapping regions in four directions" can be the connection parts of the box cover 10 and the lower box body 20 at the opening. For example: as Figure 3 shown, if the opening is rectangular, then the overlapping regions in four directions are also the four sides of the box cover 10 and the lower box body 20 at the rectangular opening. The pressure strip 30 can be a structural member pressed on the surface of the box cover 10 facing away from the lower box body 20. The pressure strip 30 can be made of steel. The thickness of the pressure strip 30 can be 1 mm. Along the same horizontal line on the pressure strip 30, a plurality of reinforcing ribs 301 are arranged at intervals. It can be understood that: the plurality of reinforcing ribs 301 can be arranged at intervals along the same horizontal line on the pressure strip 30. The area avoiding the reinforcing ribs 301 can be understood as the interval between two adjacent reinforcing ribs 301, or the positions near the reinforcing ribs 301 at both ends in the length direction of the pressure strip 30.

[0036] In the technical solution of the embodiment of the present application, by arranging the pressure strip 30 on the surface of the overlapping region of the box cover 10 and the lower box body 20, and providing a plurality of reinforcing ribs 301 on the pressure strip 30, the pressure strip 30 can further strengthen the box cover 10, and the reinforcing ribs 301 on the pressure strip 30 can further strengthen the pressure strip 30. During installation, it is not easy for the box cover 10 to arch, making the installation more accurate and convenient.

[0037] In some embodiments, please refer to Figure 3 and Figure 4 , in the area of the pressure strip 30 avoiding the reinforcing ribs 301, a plurality of third fixing holes 302 are opened. On the lower box body 20 and the box cover 10, first fixing holes 201 and second fixing holes 101 corresponding to the third fixing holes 302 are respectively opened. The fastener 40 passes through the third fixing hole 302, the second fixing hole 101, and the first fixing hole 201 in sequence to fix the box cover 10 to the lower box body 20.

[0038] It can be understood that the first fixing hole 201, the second fixing hole 101, and the third fixing hole 302 are through holes allowing the fastener 40 to pass through. The fastener 40 can be a bolt.

[0039] In the technical solution of the embodiment of the present application, a third fixing hole 302 is opened on the pressure strip 30 in an area avoiding the reinforcing rib 301, and a first fixing hole 201 and a second fixing hole 101 corresponding to the third fixing hole 302 are opened on the lower box body 20 and the box cover 10 respectively, so that the box cover 10 can be fixed to the lower box body 20 by passing the fastener 40 through the third fixing hole 302, the second fixing hole 101 and the first fixing hole 201 in sequence. At the same time, during the fastening process, the pressure strip 30 can be pressed against the surface of the box cover 10, thereby strengthening the box cover 10 and preventing the box cover 10 from arching.

[0040] In some embodiments, please refer to Figure 2 and Figure 4 , the pressure strip 30 is in the shape of a long strip; the reinforcing rib 301 is raised in the direction away from the box cover 10.

[0041] It is understood that the bead 30 can be in the form of a long strip extending along the length of the overlapping area between the lid 10 and the lower housing 20. The rib 301 protruding away from the lid 10 can be understood as the rib 301 protruding from the surface of the bead 30 away from the lid 10. In some embodiments, the side of the rib 301 facing the lid 10 forms a groove with its opening facing the lid 10.

[0042] In the technical solution of the embodiment of the present application, the above arrangement allows the bead 30 to be closely fitted to the contact surface of the box cover 10. At the same time, the reinforcing ribs 301 can reinforce the bead 30. Furthermore, during the tightening process, the bead 30 can be pressed tightly against the surface of the box cover 10, making it less likely for the bead 30 to bend along with the box cover 10. Furthermore, the bead 30 is low-cost and has a simple manufacturing process.

[0043] In some embodiments, the height of the reinforcement rib 301 protruding in the direction away from the box cover 10 is 1-5 mm.

[0044] It is understood that the reinforcing rib 301 may be a raised structure that gradually rises from the edge toward the middle. The height of the reinforcing rib 301 raised in the direction away from the box cover 10 may be the maximum height of the reinforcing rib 301.

[0045] In the technical solution of the embodiment of the present application, through the above-mentioned configuration, the raised height of the reinforcing rib 301 is set within 1-5 mm, so that the reinforcing rib 301 can effectively reinforce the bead 30. When the raised height of the reinforcing rib 301 is less than 1 mm, the raised height of the reinforcing rib 301 is too small to effectively reinforce the box cover 10 and the bead 30. When the raised height of the reinforcing rib 301 is greater than 5 mm, the raised height of the reinforcing rib 301 is too high, which will hinder the installation of the fastener 40, making installation inconvenient.

[0046] In some embodiments, the height by which the reinforcing rib 301 protrudes in the direction away from the lid 10 is 2 mm.

[0047] In some embodiments, refer to Figure 4 , the width of the bead 30 is not less than the maximum diameter of the head 401 of the fastener 40.

[0048] It can be understood that the head 401 of the fastener 40 can be a partial structure located on the side of the bead 30 away from the lid 10. For example, it can be the flange of a bolt. In some embodiments, the width of the bead 30 can be set to be slightly larger than the flange surface of the bolt.

[0049] In the technical solution of the embodiments of the present application, through the above arrangement, when the fastener 40 is installed, the head 401 of the fastener 40 can be completely attached to the bead 30, and it is not easy for the fastener 40 to scrape off the coating on the surface of the lid 10 during the installation and disassembly process, thereby corroding the lid 10, so as to protect the surface of the lid 10.

[0050] In some embodiments, the reinforcing rib 301 is arranged between two adjacent fasteners 40, and the length of the reinforcing rib 301 can extend from one fastener 40 to the other fastener 40, so as to strengthen the strength of the bead 30 through the reinforcing rib 301.

[0051] In some embodiments, refer to Figure 3 , an annular seal 50 is provided between the connection surface of the lid 10 and the lower box body 20.

[0052] In the technical solution of the embodiments of the present application, by providing an annular seal 50 between the connection surface of the lid 10 and the lower box body 20, the connection surface of the lid 10 and the lower box body 20 can be sealed.

[0053] In some embodiments, refer to Figure 4 , a sixth fixing hole 501 is provided on the seal 50 corresponding to the first fixing hole 201 of the lower box body 20 and the second fixing hole 101 of the lid 10, so that it is convenient for the fastener 40 to sequentially pass through the third fixing hole 302, the second fixing hole 101, the sixth fixing hole 501 and the first fixing hole 201 to seal and fix the lid 10 to the lower box body 20. At the same time, since the present application is provided with a bead 30 on the surface of the lid 10 to strengthen the lid 10, during the installation process of the fastener 40, it is not easy for the lid 10 to arch between two adjacent fasteners 40.

[0054] In some embodiments, refer to Figure 5 and Figure 6, the lower box body 20 includes a frame body 200 and a bottom guard plate 210 disposed at one end of the frame body 200 away from the box cover 10. Among them, on the surfaces of the overlapping regions of the bottom guard plate 210 and the frame body 200 in four directions, there are all pressure strips 30. Along the same horizontal line on the pressure strips 30, a plurality of reinforcing ribs 301 are arranged at intervals. In the regions where the reinforcing ribs 301 are avoided, the fasteners 40 sequentially pass through the pressure strips 30 and the bottom guard plate 210 and are connected to the frame body 200.

[0055] It can be understood that the frame body 200 can be formed by splicing multiple plates or can be die-cast. The frame body 200 has two openings along the first direction. One opening is closed by the box cover 10, and the other opening is closed by the bottom guard plate 210. The "overlapping regions in four directions" in the statement that on the surfaces of the overlapping regions of the bottom guard plate 210 and the frame body 200 in four directions, there are all pressure strips 30 can be the connection parts at the openings of the bottom guard plate 210 and the frame body 200. In some embodiments, the structure of the bottom guard plate 210 can be the same as the structure of the box cover 10.

[0056] In the technical solution of the embodiment of the present application, by providing the pressure strips 30 on the surfaces of the overlapping regions of the frame body 200 and the bottom guard plate 210 of the lower box body 20, and arranging a plurality of reinforcing ribs 301 at intervals along the same horizontal line on the pressure strips 30, the bottom guard plate 210 can be strengthened by the pressure strips 30 and the reinforcing ribs 301 on the pressure strips 30. During installation, it is not easy for the bottom guard plate 210 to arch, making the installation more accurate and convenient, playing a role in protecting the bottom of the battery pack box body. The reinforcing ribs 301 can further strengthen the pressure strips 30, making it not easy to bend along with the bottom guard plate 210.

[0057] In some embodiments, the pressure strips 30 for the frame body 200 and the bottom guard plate 210 can have the same structure as the pressure strips 30 for the box cover 10 and the lower box body 20.

[0058] In some embodiments, please refer to Figure 7 and Figure 8 , in the regions on the pressure strips 30 where the reinforcing ribs 301 are avoided, a plurality of third fixing holes 302 are opened. On the frame body 200 and the bottom guard plate 210, fourth fixing holes 202 and fifth fixing holes 211 corresponding to the third fixing holes 302 are respectively opened. The fasteners 40 sequentially pass through the third fixing holes 302, the fifth fixing holes 211, and the fourth fixing holes 202 to fix the bottom guard plate 210 to the frame body 20.

[0059] It can be understood that the fourth fixing holes 202, the fifth fixing holes 211, and the third fixing holes 302 are through holes allowing the fasteners 40 to pass through. The fasteners 40 can be bolts.

[0060] In the technical solution of the embodiment of the present application, a third fixing hole 302 is opened on the pressure strip 30 in an area avoiding the reinforcing rib 301, and a fourth fixing hole 202 and a fifth fixing hole 211 corresponding to the third fixing hole 302 are opened on the frame 200 and the bottom guard plate 210 respectively, so that the bottom guard plate 210 can be fixed to the frame 200 by passing through the third fixing hole 302, the fifth fixing hole 211 and the fourth fixing hole 202 in sequence. At the same time, during the fastening process, the pressure strip 30 can be pressed against the surface of the bottom guard plate 210, thereby strengthening the bottom guard plate 210 and preventing the bottom guard plate 210 from arching.

[0061] In some embodiments, please refer to Figure 8 The reinforcing rib 301 is arranged to protrude in a direction away from the bottom guard plate 210 .

[0062] In the technical solution of the embodiment of the present application, through the above-mentioned setting, the contact surface between the bottom guard plate 210 and the frame 200 can be tightly fitted, and at the same time the reinforcing rib 301 can strengthen the pressure strip 30, and then during the tightening process, the pressure strip 30 can be pressed tightly against the surface of the bottom guard plate 210, making it difficult for the pressure strip 30 to bend along with the bottom guard plate 210.

[0063] In some embodiments, please refer to Figure 8 An annular seal 50 is provided between the connecting surfaces of the bottom guard plate 210 and the frame body 200 .

[0064] In the technical solution of the embodiment of the present application, an annular seal 50 is provided between the connection surface of the bottom guard plate 210 and the frame body 200 so that the connection surface of the bottom guard plate 210 and the frame body 200 can be sealed.

[0065] On the other hand, the present application also provides a battery pack, comprising the battery pack case described in any of the foregoing items. The battery pack of the present application refers to a physical module comprising one or more battery modules to provide higher voltage and capacity. The battery pack of the present application can be applicable to various electrical devices using batteries, and the electrical devices can be but are not limited to mobile phones, tablets, laptops, electric toys, electric tools, battery vehicles, electric cars, ships, spacecraft, and the like. Among them, electric toys can include fixed or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, and the like, and spacecraft can include airplanes, rockets, space shuttles, and spacecraft, and the like.

[0066] The above are only specific embodiments of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model can easily think of changes or substitutions, which should all be covered within the protection scope of the present utility model. Therefore, the protection scope of the present utility model shall be subject to the protection scope of the said claims.

Claims

1. A battery pack housing, characterized in that, Comprising: A lower box body (20), one end of the lower box body (20) along a first direction has an opening; A box cover (10), which is hermetically closed to the opening of the lower box body (20), and on the surfaces of the overlapping regions in four directions between the box cover (10) and the lower box body (20), there are all pressing strips (30). On the pressing strips (30), a plurality of reinforcing ribs (301) are arranged at intervals along the same horizontal line. In the area avoiding the reinforcing ribs (301), through fasteners (40), the pressing strips (30) and the box cover (10) are sequentially passed through and connected to the lower box body (20).

2. The battery pack housing according to claim 1, wherein, In the area of the pressing strip (30) avoiding the reinforcing rib (301), a plurality of third fixing holes (302) are opened. On the lower box body (20) and the box cover (10), a first fixing hole (201) and a second fixing hole (101) corresponding to the third fixing hole (302) are respectively opened. The fastener (40) sequentially passes through the third fixing hole (302), the second fixing hole (101) and the first fixing hole (201) to fix the box cover (10) to the lower box body (20).

3. The battery pack housing according to claim 1, wherein, The pressing strip (30) is in a long strip shape; the reinforcing rib (301) protrudes in a direction away from the box cover (10).

4. The battery pack housing according to claim 3, wherein The height of the reinforcing rib (301) protruding in the direction away from the box cover (10) is 1 - 5 mm.

5. The battery pack housing according to claim 1, wherein, The width of the pressing strip (30) is not less than the maximum diameter of the head (401) of the fastener (40).

6. The battery pack housing according to claim 1, characterized in that A ring-shaped sealing member (50) is provided between the connection surface of the box cover (10) and the lower box body (20).

7. The battery pack housing according to any one of claims 1 to 6, characterized in that, The lower box body (20) includes a frame body (200) and a bottom protection plate (210) arranged at one end of the frame body (200) away from the box cover (10). Among them, on the surfaces of the overlapping regions in four directions between the bottom protection plate (210) and the frame body (200), there are all pressing strips (30). On the pressing strips (30), a plurality of reinforcing ribs (301) are arranged at intervals along the same horizontal line. In the area avoiding the reinforcing ribs (301), through fasteners (40), the pressing strips (30) and the bottom protection plate (210) are sequentially passed through and connected to the frame body (200).

8. The battery pack housing according to claim 7, characterized in that, In the area of the pressing strip (30) avoiding the reinforcing rib (301), a plurality of third fixing holes (302) are opened. On the frame body (200) and the bottom protection plate (210), a fourth fixing hole (202) and a fifth fixing hole (211) corresponding to the third fixing hole (302) are respectively opened. The fastener (40) sequentially passes through the third fixing hole (302), the fifth fixing hole (211) and the fourth fixing hole (202) to fix the bottom protection plate (210) to the frame body (200). And the reinforcing rib (301) protrudes in a direction away from the bottom protection plate (210).

9. The battery pack housing according to claim 7, characterized in that, A ring-shaped sealing member (50) is provided between the connection surface of the bottom protection plate (210) and the frame body (200).

10. A battery pack, characterized in that, Including the battery pack box body according to any one of the preceding claims 1 to 9.

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