Battery pack structure and battery pack assembly

Abstract

The utility model provides a battery pack structure and battery pack subassembly, battery pack structure includes battery box and locking structure, battery box is used for holding battery cell, it includes top plate, frame, cold plate and bottom plate, is equipped with locking channel on the battery box, locking channel passes through top plate, frame and cold plate; the locking structure is used for locking and fixing the battery box body and comprises a first sleeve, a second sleeve and a locking piece; the first end of the first sleeve abuts against the top plate, and the second end of the first sleeve extends into the locking channel. The first end of the second sleeve abuts against the cold plate, and the second end of the second sleeve extends into the locking channel to be detachably connected with the second end of the first sleeve. The first end of the locking piece abuts against the interior of the channel structure, and the second end of the locking piece penetrates through the channel structure and then is exposed. The battery pack structure and the battery pack assembly provided by the utility model can solve the problem that the mounting structure of the battery pack in the prior art occupies the mounting space of the battery pack.

Description

Technical Field

[0001] The utility model relates to the technical field of battery-related structures, and in particular to a battery pack structure and a battery pack assembly. Background Art

[0002] Improving the battery life of new energy vehicles requires higher battery energy density and larger battery pack volume. At present, when installing and fixing large-volume battery packs to the vehicle body, the mainstream solution is to use bolts to penetrate the battery box and then fix it to the vehicle body to ensure the reliability of the connection between the battery pack and the vehicle body. However, in this fixing structure, the bolts will occupy the installation space of the battery pack, thereby affecting the installation volume of the battery pack.

[0003] As can be seen from the above, the current installation structure of the battery pack has the problem of occupying the installation space of the battery pack. Utility Model Content

[0004] The main purpose of the utility model is to provide a battery pack structure and a battery pack assembly to solve the problem that the installation structure of the battery pack in the prior art occupies the installation space of the battery pack.

[0005] To achieve the above-mentioned purpose, according to one aspect of the utility model, a battery pack structure is provided, the battery pack structure includes a battery case, the battery case is used to accommodate battery cells, the battery case includes a top plate, a frame, a cold plate and a bottom plate; the battery case is provided with a locking channel, the locking channel passes through the top plate, the frame and the cold plate; a locking structure, the locking structure is used to lock and fix the battery case, and it includes a first sleeve, a second sleeve and a locking piece; the first end of the first sleeve abuts against the top plate, and the second end of the first sleeve extends into the interior of the locking channel; the first end of the second sleeve abuts against the cold plate, and the second end of the second sleeve extends into the interior of the locking channel and is detachably connected to the second end of the first sleeve, the first sleeve and the second sleeve are both hollow structures, and the two hollow structures are connected to form a channel structure; the first end of the locking piece abuts against the interior of the channel structure, the second end of the locking piece passes through the channel structure and is exposed, and the second end of the locking piece is used to connect to the structure to be installed.

[0006] Further, the first end of the first sleeve has a first abutment portion, and at least a portion of the first end of the locking member abuts against the first abutment portion.

[0007] Further, the first end of the second sleeve has a second abutment portion, and at least a portion of the first end of the locking member abuts against the second abutment portion.

[0008] Further, the first end of the first sleeve has a first abutment portion, which is a groove structure; or the first end of the second sleeve has a second abutment portion, which is a groove structure; wherein the groove bottom surface of the groove structure has a through hole, and the first end of the locking member has a circumferential flange, which abuts against the groove bottom surface of the groove structure.

[0009] Furthermore, the first end of the locking member also has a bolt head, which is arranged inside the groove structure and does not protrude from the first sleeve or the second sleeve.

[0010] Furthermore, at least a portion of the second end of the first sleeve extends into the internal threaded connection of the second end of the second sleeve; or at least a portion of the second end of the second sleeve extends into the internal threaded connection of the second end of the first sleeve; the battery pack structure also includes a first sealing ring, which is arranged between the first sleeve and the second sleeve, and at least one first sealing ring is provided. When multiple first sealing rings are provided, the multiple first sealing rings are arranged at intervals along the axial direction of the first sleeve and the second sleeve.

[0011] Furthermore, the first sleeve has an axially arranged first threaded section and a first sealing section, the second sleeve has an axially arranged second threaded section and a second sealing section, one of the first threaded section and the second threaded section is an internal thread, and the other is an external thread, an installation gap is formed between the first sealing section and the second sealing section, and a first sealing ring is arranged at the installation gap to form a seal.

[0012] Furthermore, the first end of the first sleeve has a first abutment plate, which abuts against the top plate, the first end of the second sleeve has a second abutment plate, which abuts against the cold plate, and the battery pack structure also includes a second sealing ring, the first abutment plate has a first annular groove at one end facing the top plate, at least a portion of the second sealing ring is arranged inside the first annular groove and abuts against the top plate; a third sealing ring, the second abutment plate has a second annular groove at one end facing the cold plate, at least a portion of the third sealing ring is arranged inside the second annular groove and abuts against the cold plate.

[0013] According to another aspect of the utility model, a battery pack assembly is provided, which includes the above-mentioned battery pack structure; a socket wrench, which is detachably connected to a first socket of the battery pack structure and a second socket of the battery pack structure, and the socket wrench provides a driving force for rotating the first socket and the second socket.

[0014] Furthermore, the first end of the first sleeve has a first abutment plate, and the outer circumferential surface of the first abutment plate has a groove, and the first end of the second sleeve has a second abutment plate, and the outer circumferential surface of the second abutment plate has a groove; the socket wrench has a groove, and the inner wall surface of the groove has a convex rib, when the first sleeve needs to be rotated, the first abutment plate is accommodated inside the groove, and at least a part of the convex rib extends into the interior of the groove; when the second sleeve needs to be rotated, the second abutment plate is accommodated inside the groove, and at least a part of the convex rib extends into the interior of the groove.

[0015] Applying the technical solution of the utility model, the battery pack structure includes a battery box, the battery box is used to accommodate battery cells, the battery box includes a top plate, a frame, a cold plate and a bottom plate; the battery box is provided with a locking channel, the locking channel passes through the top plate, the frame and the cold plate; a locking structure, the locking structure is used to lock and fix the battery box, and it includes a first sleeve, a second sleeve and a locking piece; the first end of the first sleeve abuts against the top plate, and the second end of the first sleeve extends into the interior of the locking channel; the first end of the second sleeve abuts against the cold plate, and the second end of the second sleeve extends into the interior of the locking channel and is detachably connected to the second end of the first sleeve, the first sleeve and the second sleeve are both hollow structures, and the two hollow structures are connected to form a channel structure; the first end of the locking piece abuts against the interior of the channel structure, the second end of the locking piece passes through the channel structure and is exposed, and the second end of the locking piece is used to connect to the structure to be installed.

[0016] From the above, it can be seen that the battery pack structure of the present application adopts a structure in which the first sleeve, the second sleeve and the locking piece cooperate to achieve hiding the first end of the locking piece inside the first sleeve and / or the second sleeve, and the second end of the locking piece is connected to the vehicle body waiting for installation structure, thereby avoiding the locking piece occupying the installation space of the battery box, which is beneficial to improving the installation efficiency of the battery cell.

[0017] The present application adopts a first sleeve and a second sleeve that are detachably connected and can form a channel structure, which can not only accommodate the locking member, but also facilitate disassembly and installation, which is conducive to improving assembly efficiency.

[0018] The present application adopts a first abutment plate of the first sleeve abutting against the top plate of the battery box, and a second abutment plate of the second sleeve abutting against the cold plate. The first sleeve and the second sleeve are fixed by abutting against the battery box, which is conducive to ensuring high consistency and reducing space occupancy.

[0019] The first abutment plate and the second abutment plate of the present application are provided with card slots, which facilitate the operation of the first sleeve and the second sleeve by a socket wrench. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The drawings constituting part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0021] Figure 1 An exploded view of the battery pack assembly of the present invention is shown;

[0022] Figure 2 A schematic diagram of the installation structure of an embodiment of the first sleeve, the second sleeve and the locking member of the utility model is shown;

[0023] Figure 3 A schematic diagram of the installation structure of another embodiment of the first sleeve, the second sleeve and the locking member of the utility model is shown;

[0024] Figure 4 A three-dimensional structural schematic diagram of the second sleeve of the utility model is shown;

[0025] Figure 5 Another three-dimensional structural schematic diagram of the second sleeve of the utility model is shown;

[0026] Figure 6 A three-dimensional structural schematic diagram of the first sleeve of the utility model is shown;

[0027] Figure 7 A cross-sectional view of a first sleeve of the utility model is shown;

[0028] Figure 8 The three-dimensional structural schematic diagram of the socket wrench of the utility model is shown.

[0029] The above drawings include the following reference numerals:

[0030] 10. Battery case; 110. Top plate; 120. Frame; 130. Cold plate; 140. Bottom plate; 20. First sleeve; 210. First abutment portion; 220. First abutment plate; 221. First annular groove; 230. First threaded section; 240. First sealing section; 30. Second sleeve; 310. Second abutment portion; 320. Second abutment plate; 321. Second annular groove; 330. Second threaded section; 340. Second sealing section; 40. Locking member; 410. Circumferential flange; 420. Bolt head; 50. First sealing ring; 60. Second sealing ring; 70. Third sealing ring; 80. Socket wrench; 810. Groove; 820. Raised rib; 90. Slot. DETAILED DESCRIPTION

[0031] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present utility model will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0032] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meanings as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0033] In the present invention, unless otherwise specified, the directional words used, such as "up, down, top, bottom", usually refer to the directions shown in the drawings, or to the components themselves in the vertical, perpendicular or gravity directions; similarly, for ease of understanding and description, "inside and outside" refer to the inside and outside relative to the outline of each component itself, but the above-mentioned directional words are not used to limit the present invention.

[0034] Embodiment 1

[0035] In order to solve the problem in the prior art that the installation structure of the battery pack occupies the installation space of the battery pack, this embodiment provides a battery pack structure.

[0036] like Figure 1 As shown, the battery pack structure includes a battery box 10 and a locking structure. The battery box 10 is used to accommodate the battery cell. The battery box 10 includes a top plate 110, a frame 120, a cold plate 130 and a bottom plate 140. The battery box 10 has a locking channel, which runs through the top plate 110, the frame 120 and the cold plate 130; the locking structure is used to lock and fix the battery box 10, and the locking structure includes a first sleeve 20, a second sleeve 30 and a locking member 40. The first end of the first sleeve 20 abuts against the top plate 110 of the battery box 10, and the first The second end of the sleeve 20 extends into the interior of the locking channel, the first end of the second sleeve 30 abuts against the cold plate 130 of the battery box 10, the second end of the second sleeve 30 extends into the interior of the locking channel and is detachably connected to the second end of the first sleeve 20, the first sleeve 20 and the second sleeve 30 are both hollow structures, and the two hollow structures are connected to form a channel structure; the first end of the locking piece 40 abuts against the interior of the channel structure, the second end of the locking piece 40 passes through the channel structure and is exposed, and the second end of the locking piece 40 is used to connect to the structure to be installed.

[0037] Specifically, the battery pack structure of the present application adopts a structure in which a first sleeve 20, a second sleeve 30 and a locking member 40 cooperate to achieve hiding the first end of the locking member 40 inside the first sleeve 20 and / or the second sleeve 30, and connecting the second end of the locking member 40 to the vehicle body waiting for installation structure, thereby avoiding the locking member 40 occupying the installation space of the battery box 10, which is beneficial to improving the installation efficiency of the battery cell.

[0038] The structure to be installed may be a vehicle body or a battery mounting frame or other structure for installing the battery box 10 .

[0039] Furthermore, the first end of the locking member 40 abuts against the interior of the channel structure, which may be the interior of the channel structure where the first sleeve 20 is located, or the interior of the channel structure where the second sleeve 30 is located.

[0040] In this embodiment, the present application adopts a first sleeve 20 and a second sleeve 30 that are detachably connected and can form a channel structure, which can not only accommodate the locking member 40, but also facilitate disassembly and installation, which is conducive to improving assembly efficiency.

[0041] like Figure 2 As shown, in a specific implementation of the present embodiment, the first end of the locking member 40 abuts against the inside of the channel structure where the first sleeve 20 is located. Specifically, a first abutting portion 210 is provided at the first end of the first sleeve 20, and at least a portion of the first end of the locking member 40 abuts against the first abutting portion 210. The second end of the locking member 40 passes through the second sleeve 30 and is exposed to the outside of the channel structure.

[0042] Furthermore, the first abutting portion 210 is a groove structure, the bottom surface of the groove structure has a through hole, the first end of the locking member 40 has a circumferential flange 410, the circumferential flange 410 abuts against the bottom surface of the groove structure, and the second end of the locking member 40 passes through the through hole.

[0043] The groove structure is arranged at one end of the first sleeve 20 away from the second sleeve 30, and the opening direction of the groove structure is toward the top plate 110. That is, the groove structure is arranged on one side close to the top plate 110, and the locking member 40 penetrates the bottom plate 140 of the battery box and is fixed to the structure to be installed.

[0044] During installation, the second end of the locking piece 40 is passed through the through hole and exposed on the outside of the channel structure to be fixed to the structure to be installed. The diameter of the circumferential flange 410 of the locking piece 40 is larger than the diameter of the through hole, and the circumferential flange 410 abuts against the bottom surface of the groove structure to fix the battery box to the structure to be installed through the locking piece 40.

[0045] like Figure 3 As shown, in another specific implementation of the present embodiment, the first end of the locking member 40 abuts against the inside of the channel structure where the second sleeve 30 is located. Specifically, a second abutting portion 310 is provided at the first end of the second sleeve 30, and at least a portion of the first end of the locking member 40 abuts against the second abutting portion 310. The second end of the locking member 40 passes through the first sleeve 20 and is exposed to the outside of the channel structure.

[0046] Furthermore, the second abutting portion 310 is a groove structure, the bottom surface of the groove structure has a through hole, the first end of the locking member 40 has a circumferential flange 410, the circumferential flange 410 abuts against the bottom surface of the groove structure, and the second end of the locking member 40 passes through the through hole.

[0047] The groove structure is arranged at one end of the second sleeve 30 away from the first sleeve 20, and the opening direction of the groove structure is toward the cold plate 130. That is, the groove structure is arranged on one side close to the cold plate 130, and the locking member 40 penetrates the top plate 110 of the battery box and is fixed to the structure to be installed.

[0048] During installation, the second end of the locking piece 40 is passed through the through hole and exposed on the outside of the channel structure to be fixed to the structure to be installed. The diameter of the circumferential flange 410 of the locking piece 40 is larger than the diameter of the through hole, and the circumferential flange 410 abuts against the bottom surface of the groove structure to fix the battery box to the structure to be installed through the locking piece 40.

[0049] In the above two embodiments, the first end of the locking member 40 further has a bolt head 420, which is disposed inside the slot structure and does not protrude from the first sleeve 20 or the second sleeve 30. By hiding the bolt head 420 inside the slot structure and not protruding from the first sleeve 20 or the second sleeve 30, the phenomenon of the bolt head 420 being exposed outside the battery box 10 and occupying the installation space of the battery box 10 is avoided, which is conducive to increasing the installation space of the battery box 10.

[0050] It should be noted that the specific structure of the connection between the locking member 40 and the structure to be installed can be a threaded connection, and the bolt head 420 is driven to rotate by a tool such as a wrench, and then the locking member 40 is driven to rotate by the bolt head 420.

[0051] like Figures 4 to 7 As shown, in this embodiment, the first sleeve 20 and the second sleeve 30 are threadedly connected, the first sleeve 20 has an axially arranged first thread segment 230 and a first sealing segment 240, the second sleeve 30 has an axially arranged second thread segment 330 and a second sealing segment 340, one of the first thread segment 230 and the second thread segment 330 is an internal thread, and the other is an external thread, and the internal thread and the external thread are rotatably matched.

[0052] Furthermore, at least a portion of the second end of the first sleeve 20 may extend into the internal threaded connection of the second end of the second sleeve 30, wherein the first threaded section 230 of the first sleeve 20 is an external thread and the second threaded section 330 of the second sleeve 30 is an internal thread.

[0053] Furthermore, at least a portion of the second end of the second sleeve 30 may extend into the internal threaded connection of the second end of the first sleeve 20, wherein the first threaded section 230 of the first sleeve 20 is an internal thread and the second threaded section 330 of the second sleeve 30 is an external thread.

[0054] like Figure 2 or Figure 3As shown, the battery pack structure also includes a first sealing ring 50, which is arranged between the first sleeve 20 and the second sleeve 30. There is at least one first sealing ring 50. When there are multiple first sealing rings 50, the multiple first sealing rings 50 are arranged at axial intervals along the first sleeve 20 and the second sleeve 30.

[0055] The first sealing ring 50 is used to seal the gap between the first sleeve 20 and the second sleeve 30, thereby preventing dust and water vapor from affecting the battery cell.

[0056] Specifically, an installation gap is formed between the first sealing section 240 and the second sealing section 340 , and the first sealing ring 50 is disposed at the installation gap to form a seal.

[0057] like Figure 5 to Figure 6 As shown, the first end of the first sleeve 20 has a first abutting plate 220 , which abuts against the top plate 110 , and the first end of the second sleeve 30 has a second abutting plate 320 , which abuts against the cold plate 130 .

[0058] Specifically, the present application adopts the first abutment plate 220 of the first sleeve 20 to abut against the top plate 110 of the battery box 10, and the second abutment plate 320 of the second sleeve 30 to abut against the cold plate 130. The first sleeve 20 and the second sleeve 30 are fixedly abutted against the battery box 10, which is conducive to ensuring high consistency and reducing space occupancy.

[0059] like Figure 5 to Figure 6 As shown, in the present embodiment, the battery pack structure further includes a second sealing ring 60 and a third sealing ring 70, the first abutment plate 220 has a first annular groove 221 at one end thereof facing the top plate 110, at least a portion of the second sealing ring 60 is disposed inside the first annular groove 221 and abuts against the top plate 110, the second abutment plate 320 has a second annular groove 321 at one end thereof facing the cold plate 130, at least a portion of the third sealing ring 70 is disposed inside the second annular groove 321 and abuts against the cold plate 130.

[0060] The second sealing ring 60 is used to achieve a sealed fit between the first abutting plate 220 and the top plate 110, and the third sealing ring 70 is provided to achieve a sealed fit between the second abutting plate 320 and the cold plate 130, thereby preventing external dust and water vapor from entering the interior of the channel structure.

[0061] In this embodiment, a top groove may be opened on the top plate 110, a bottom groove may be set on the cold plate 130, the first abutment plate 220 may be accommodated inside the top groove, and the second abutment plate 320 may be accommodated inside the bottom groove, thereby achieving the first sleeve 20 and the second sleeve 30 not occupying the installation space of the battery box 10.

[0062] Embodiment 2

[0063] This embodiment provides a battery pack assembly, such as Figures 1 to 8 As shown, the battery pack assembly includes the battery pack structure in the first embodiment and a socket wrench 80.

[0064] Specifically, the socket wrench 80 is detachably connected to the first socket 20 of the battery pack structure and the second socket 30 of the battery pack structure, and the socket wrench 80 provides a driving force for rotating the first socket 20 and the second socket 30 .

[0065] Furthermore, the first end of the first sleeve 20 has a first abutting plate 220 with a slot 90 on its outer circumferential surface, and the first end of the second sleeve 30 has a second abutting plate 320 with a slot 90 on its outer circumferential surface.

[0066] Furthermore, the socket wrench 80 has a groove 810, and a convex rib 820 is provided on the inner wall surface of the groove 810. When the first sleeve 20 needs to be rotated, the first abutment plate 220 is accommodated inside the groove 810, and at least a portion of the convex rib 820 extends into the interior of the slot 90; when the second sleeve 30 needs to be rotated, the second abutment plate 320 is accommodated inside the groove 810, and at least a portion of the convex rib 820 extends into the interior of the slot 90.

[0067] In this embodiment, the first abutment plate 220 and the second abutment plate 320 of the present application are provided with a card slot 90 , so as to facilitate the operation of the first socket 20 and the second socket 30 by the socket wrench 80 .

[0068] From the above description, it can be seen that the above embodiments of the utility model achieve the following technical effects:

[0069] The battery pack structure of the present application adopts a structure in which the first sleeve 20, the second sleeve 30 and the locking piece 40 cooperate to achieve hiding the first end of the locking piece 40 inside the first sleeve 20 and / or the second sleeve 30, and the second end of the locking piece 40 is connected to the vehicle body waiting for installation structure, thereby avoiding the locking piece 40 occupying the installation space of the battery box 10, which is beneficial to improving the installation efficiency of the battery cell.

[0070] The present application adopts a first sleeve 20 and a second sleeve 30 that are detachably connected and can form a channel structure, which can not only accommodate the locking member 40, but also facilitate disassembly and installation, which is conducive to improving assembly efficiency.

[0071] In the present application, the first abutment plate 220 of the first sleeve 20 abuts against the top plate 110 of the battery box 10, and the second abutment plate 320 of the second sleeve 30 abuts against the cold plate 130. The first sleeve 20 and the second sleeve 30 are fixedly abutted against the battery box 10, which is conducive to ensuring high consistency and reducing space occupancy.

[0072] The first abutment plate 220 and the second abutment plate 320 of the present application are provided with a clamping groove 90 , so as to facilitate the operation of the first sleeve 20 and the second sleeve 30 by the socket wrench 80 .

[0073] Obviously, the embodiments described above are only some embodiments of the utility model, not all embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0074] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0075] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein.

[0076] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A battery pack structure, characterized in that: include: A battery box (10), the battery box (10) is used to accommodate a battery cell, and comprises a top plate (110), a frame (120), a cold plate (130) and a bottom plate (140); the battery box (10) is provided with a locking channel, and the locking channel passes through the top plate (110), the frame (120) and the cold plate (130); A locking structure, the locking structure being used to lock and fix the battery box (10), comprising a first sleeve (20), a second sleeve (30) and a locking member (40); The first end of the first sleeve (20) abuts against the top plate (110), and the second end of the first sleeve (20) extends into the interior of the locking channel; The first end of the second sleeve (30) abuts against the cold plate (130), the second end of the second sleeve (30) extends into the interior of the locking channel and is detachably connected to the second end of the first sleeve (20), the first sleeve (20) and the second sleeve (30) are both hollow structures, and the two hollow structures are connected to form a channel structure; The first end of the locking member (40) abuts against the interior of the channel structure, the second end of the locking member (40) penetrates the channel structure and is exposed, and the second end of the locking member (40) is used to connect to the structure to be installed.

2. The battery pack structure according to claim 1, characterized in that: The first end of the first sleeve (20) has a first abutment portion (210), and at least a portion of the first end of the locking member (40) abuts against the first abutment portion (210).

3. The battery pack structure according to claim 1, characterized in that: The first end of the second sleeve (30) has a second abutment portion (310), and at least a portion of the first end of the locking member (40) abuts against the second abutment portion (310).

4. The battery pack structure according to claim 1, characterized in that: The first end of the first sleeve (20) has a first abutment portion (210), and the first abutment portion (210) is a groove structure; or The first end of the second sleeve (30) has a second abutment portion (310), and the second abutment portion (310) is a groove structure; The bottom surface of the groove structure is provided with a through hole, and the first end of the locking member (40) is provided with a circumferential flange (410), and the circumferential flange (410) is in contact with the bottom surface of the groove structure.

5. The battery pack structure according to claim 4, characterized in that: The first end of the locking member (40) also has a bolt head (420), and the bolt head (420) is arranged inside the groove structure and does not protrude from the first sleeve (20) or the second sleeve (30).

6. The battery pack structure according to claim 1, characterized in that: At least a portion of the second end of the first sleeve (20) extends into the internal threaded connection of the second end of the second sleeve (30); or at least a portion of the second end of the second sleeve (30) extends into the internal threaded connection of the second end of the first sleeve (20); The battery pack structure also includes a first sealing ring (50), which is arranged between the first sleeve (20) and the second sleeve (30). There is at least one first sealing ring (50), and when there are multiple first sealing rings (50), the multiple first sealing rings (50) are arranged at intervals along the axial direction of the first sleeve (20) and the second sleeve (30).

7. The battery pack structure according to claim 6, characterized in that: The first sleeve (20) has an axially arranged first threaded section (230) and a first sealing section (240), and the second sleeve (30) has an axially arranged second threaded section (330) and a second sealing section (340), one of the first threaded section (230) and the second threaded section (330) is an internal thread, and the other is an external thread, an installation gap is formed between the first sealing section (240) and the second sealing section (340), and the first sealing ring (50) is arranged at the installation gap to form a seal.

8. The battery pack structure according to claim 1, characterized in that: The first end of the first sleeve (20) has a first abutment plate (220), the first abutment plate (220) abuts against the top plate (110), the first end of the second sleeve (30) has a second abutment plate (320), the second abutment plate (320) abuts against the cold plate (130), and the battery pack structure further includes: a second sealing ring (60), wherein one end of the first abutting plate (220) facing the top plate (110) has a first annular groove (221), and at least a portion of the second sealing ring (60) is disposed inside the first annular groove (221) and abuts against the top plate (110); A third sealing ring (70), one end of the second abutting plate (320) facing the cold plate (130) has a second annular groove (321), and at least a portion of the third sealing ring (70) is arranged inside the second annular groove (321) and abuts against the cold plate (130).

9. A battery pack assembly, characterized in that: The battery pack assembly comprises: The battery pack structure according to any one of claims 1 to 8; A socket wrench (80) is detachably connected to a first sleeve (20) of the battery pack structure and a second sleeve (30) of the battery pack structure, and the socket wrench (80) provides a driving force for rotating the first sleeve (20) and the second sleeve (30).

10. The battery pack assembly according to claim 9, characterized in that: The first end of the first sleeve (20) has a first abutment plate (220), and the outer peripheral surface of the first abutment plate (220) has a clamping groove (90); the first end of the second sleeve (30) has a second abutment plate (320), and the outer peripheral surface of the second abutment plate (320) has a clamping groove (90); The socket wrench (80) has a groove (810), and the inner wall surface of the groove (810) has a convex rib (820). When the first sleeve (20) needs to be rotated, the first abutment plate (220) is accommodated in the groove (810), and at least a portion of the convex rib (820) extends into the interior of the slot (90); when the second sleeve (30) needs to be rotated, the second abutment plate (320) is accommodated in the groove (810), and at least a portion of the convex rib (820) extends into the interior of the slot (90).

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