Bottom plate assembly, box body, battery pack and electric equipment

Abstract

The utility model relates to a bottom plate assembly, a box body, a battery pack and electric equipment, the bottom plate assembly comprises a bottom protection plate, a heat exchange plate and a sealing structure, the bottom protection plate is located below the heat exchange plate and is in sealing connection with the heat exchange plate, and a cavity is defined between the bottom protection plate and the heat exchange plate; only one of the bottom protection plate and the heat exchange plate is provided with a through hole used for communicating the cavity with the external environment, and the sealing structure detachably covers the through hole and seals the cavity. Only one through hole is formed in the heat exchange plate or the bottom protection plate, the through hole is used for communicating the cavity between the heat exchange plate and the bottom protection plate with the external atmosphere, so that the cavity is communicated with the external atmosphere only through the through hole, the sealing structure is arranged to seal the through hole, and sealing of the cavity is guaranteed. The sealing performance of the cavity can be conveniently detected by opening the through hole, and only one through hole is arranged for detecting the sealing performance, so that the sealing performance of the cavity can be improved while the sealing performance of the cavity can be detected.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of bottom plates, in particular to a bottom plate assembly, a box, a battery pack and an electrical equipment. BACKGROUND

[0002] In related energy storage products with sealing requirements, there are few sealing designs for the area between the bottom guard plate and the heat exchange plate of the bottom plate structure of the box, and even if there are sealing designs, it is difficult to perform sealing detection. In the related art, after the area between the bottom guard plate and the heat exchange plate is sealed, water enters the area, causing the cold plate to corrode and leak. Therefore, there is an increasing need for sealing inspection of the area between the bottom guard plate and the heat exchange plate. CONTENT OF THE UTILITY MODEL

[0003] The purpose of the present disclosure is to provide a bottom plate assembly, a box, a battery pack and an electrical equipment to at least partially solve the technical problems existing in the related art.

[0004] In order to achieve the above-mentioned purpose, according to a first aspect of the present disclosure, a bottom plate assembly is provided, comprising a bottom guard plate, a heat exchange plate and a sealing structure:

[0005] The bottom guard plate is located below the heat exchange plate and is sealingly connected to the heat exchange plate, and a cavity is enclosed between the bottom guard plate and the heat exchange plate;

[0006] A through hole for communicating the cavity with the external environment is provided on the bottom guard plate or the heat exchange plate;

[0007] The sealing structure is detachably provided on the through hole and seals the cavity.

[0008] Optionally, the sealing structure comprises a sealing member and a connecting member, the connecting member is connected to the bottom guard plate where the through hole is located or the heat exchange plate where the through hole is located, and the connecting member blocks the through hole;

[0009] The sealing member is provided between the through hole and the connecting member.

[0010] Optionally, the through hole is provided on the heat exchange plate, and the sealing structure is located on a side of the heat exchange plate away from the bottom guard plate.

[0011] Optionally, the sealing structure comprises a connecting member connected to the heat exchange plate, and the connecting member comprises a mounting member and a plugging member;

[0012] The lower end of the mounting member is connected to the heat exchange plate, a mounting hole communicating with the through hole is provided in the mounting member, and at least part of the plugging member is inserted into the mounting hole and seals the mounting hole.

[0013] Optionally, the sealing structure comprises a sealing member, and the sealing member comprises a sealing ring.

[0014] The plugging member has an uninserted part outside the mounting hole, and the uninserted part is sealingly and press-fitted to the upper end of the mounting member through the sealing ring.

[0015] Optionally, the mounting member is a nut, and the plugging member is a bolt.

[0016] The screw rod of the plugging member is inserted into the mounting hole, and the nut of the plugging member is configured as the uninserted part, and the nut is sealingly and press-fitted to the upper end of the mounting member through the sealing ring.

[0017] Optionally, the lower end of the mounting member is welded to the heat exchange plate.

[0018] Optionally, the bottom guard plate is provided with a recess recessed toward the heat exchange plate, and the through hole is arranged in the recess.

[0019] Optionally, part of the bottom guard plate is protruded toward the heat exchange plate to form the recess, and the through hole is arranged in the bottom wall of the recess.

[0020] Optionally, the sealing structure comprises a connecting member, and the connecting member comprises a plug-in member, and the plug-in member is sealingly plugged into the through hole.

[0021] The lower end surface of the plug-in member is higher than the lowest part of the bottom surface of the bottom guard plate.

[0022] Optionally, the plug-in member has an abutting part located outside the through hole and located on the side of the bottom guard plate away from the heat exchange plate.

[0023] The abutting part shields the through hole.

[0024] The sealing structure further comprises a sealing member, and the sealing member comprises sealing glue, and the abutting part is adhered to the bottom guard plate through the sealing glue.

[0025] Optionally, the plug-in member is a sealing rivet.

[0026] The sealing rod of the plug-in member is arranged in the through hole, the sealing cap of the plug-in member is configured as the abutting part, and the abutting part is adhered to the bottom guard plate through the sealing glue.

[0027] According to a second aspect of the present disclosure, a box body is provided, comprising a box body and a bottom plate assembly as described above, and the bottom plate assembly is connected to the bottom of the box body.

[0028] According to a third aspect of the present disclosure, a battery pack is provided, comprising a battery cell and a box body as described above, and the battery cell is arranged in the box body.

[0029] According to a fourth aspect of the present disclosure, there is provided a battery pack for an electric device.

[0030] By the above technical solution, only one through hole is arranged on the heat exchange plate or the bottom guard plate, the through hole is used to communicate the cavity between the heat exchange plate and the bottom guard plate with the external atmosphere, so that the cavity is only communicated with the external atmosphere through the through hole, and the through hole is sealed by the sealing member. In this way, the sealing performance of the cavity can be conveniently detected by opening the through hole, and the through hole for detecting the sealing performance is only one, and the sealing point is less. Therefore, while the sealing performance of the cavity can be detected, the risk of sealing failure is also reduced.

[0031] Other features and advantages of the present disclosure will be described in detail in the following embodiment part. BRIEF DESCRIPTION OF DRAWINGS

[0032] The accompanying drawings are included to provide a further understanding of the present disclosure and constitute a part of the specification, and are used together with the following detailed description to explain the present disclosure, but do not constitute a limitation on the present disclosure. In the drawings:

[0033] Figure 1 is a structural schematic view of a bottom plate assembly provided by an example embodiment of the present disclosure;

[0034] Figure 2 is an enlarged schematic view of part A in Figure 1

[0035] Figure 3 is a sectional view of part of the bottom plate assembly provided by an example embodiment of the present disclosure;

[0036] Figure 4 is a sectional view of part of the bottom plate assembly provided by another example embodiment of the present disclosure;

[0037] Figure 5 is an enlarged schematic view of part B in Figure 4

[0038] Figure 6 is a structural schematic view of a bottom plate assembly provided by another example embodiment of the present disclosure;

[0039] Figure 7 is an enlarged schematic view of part C in Figure 6

[0040] BRIEF DESCRIPTION OF DRAWINGS

[0041] ​​​100, bottom plate assembly, 10, bottom guard plate, 11, recess, 20, heat exchange plate, 30, sealing structure, 40, through hole, 50, sealing element, 51, sealing ring, 52, sealing glue, 60, connecting piece, 61, mounting piece, 611, mounting hole, 62, plugging piece, 621, uninserted part, 63, plug-in piece, 631, abutting part, 70, cavity. DETAILED DESCRIPTION

[0042] The specific embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely intended to illustrate and explain the present disclosure, and are not intended to limit the present disclosure.

[0043] In the present disclosure, it is understood that, in the present disclosure, the orientation words such as "upper", "lower", etc. used to indicate the orientation or position relationship are defined based on the drawing direction shown in the corresponding drawings, and are only for the convenience of describing the present disclosure and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, and a particular orientation configuration and operation, and therefore cannot be understood as a limitation on the present disclosure, and the terms "inner" and "outer" can refer to the inner and outer of the corresponding structure profile. In addition, it should be noted that the terms such as "first", "second", etc. are used to distinguish one element from another element, and do not have sequentiality and importance. In addition, in the description with reference to the drawings, the same reference signs in different drawings represent the same elements.

[0044] In the description of the present disclosure, it should be noted that, unless otherwise explicitly specified and limited, the terms "set", "connected", "linked", "mounted" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be directly connected, or indirectly connected through an intermediate medium. For those skilled in the art, the specific meanings of the above terms in the present disclosure can be understood according to the specific circumstances.

[0045] According to the first aspect of the present disclosure, as shown in Figures 1 to 7 A bottom plate assembly 100 is provided, which comprises a bottom guard plate 10, a heat exchange plate 20 and a sealing structure 30. The bottom guard plate 10 is located below the heat exchange plate 20 and is sealingly connected with the heat exchange plate 20. A cavity 70 is enclosed between the bottom guard plate 10 and the heat exchange plate 20. A through hole 40 for communicating the cavity 70 with the external environment is arranged on the bottom guard plate 10 or the heat exchange plate 20. The sealing structure 30 is detachably arranged on the through hole 40 and seals the cavity 70.

[0046] By the above technical solution, only one through hole 40 is arranged on the heat exchange plate 20 or the bottom guard plate 10, the through hole 40 is used to communicate the cavity 70 between the heat exchange plate 20 and the bottom guard plate 10 and the external atmosphere, so that the cavity 70 is only communicated with the external atmosphere through the through hole 40, and the sealing structure 30 is arranged to seal the through hole 40, so as to ensure the sealing of the cavity 70. In this way, the opening of the through hole 40 can facilitate the detection of the sealing performance of the cavity 70, and the through hole 40 for detecting the sealing performance is only one, which can improve the sealing performance of the cavity 70 while detecting the sealing performance of the cavity 70, and the sealing point is less, which can reduce the risk of sealing failure.

[0047] In the present disclosure, the sealing structure 30 can include a sealing member and a connecting member 60, the connecting member 60 is connected to the bottom guard plate 10 where the through hole 40 is located or the heat exchange plate 20 where the through hole 40 is located, and covers the through hole 40, and the sealing member is used to seal the through hole 40 and the connecting member 60. Here, the connecting member 60 can be used to cover the through hole 40, and the sealing member 50 can be used to seal the gap between the connecting member 60 and the heat exchange plate 20 or the bottom guard plate 10, so as to prevent the sealing structure 30 from failing to seal the through hole 40, thereby ensuring the sealing performance of the cavity 70. In this way, the sealing structure 30 occupies less space and is convenient to arrange.

[0048] In an embodiment, as shown in Figures 1 to 3 The through hole 40 can be arranged on the heat exchange plate 20, and the sealing structure 30 is located on the side of the heat exchange plate 20 away from the bottom guard plate 10. That is, the sealing structure 30 is arranged on the side of the cavity 70, which can facilitate the installation and disassembly of the sealing structure 30. Here, the through hole 40 is arranged on the heat exchange plate 20, and the sealing structure 30 for sealing the through hole 40 is arranged on the heat exchange plate 20, so that when the bottom guard plate 10 is impacted or scratched, the connection of the sealing structure 30 is less affected, thereby improving the reliability of the sealing of the through hole 40 and reducing the risk of failure of the heat exchange plate 20.

[0049] Here, the position of the through hole 40 arranged on the heat exchange plate 20 is free of the heat exchange flow channel, which prevents the flow channel from being damaged.

[0050] Optionally, as shown in Figure 3As shown, the sealing structure 30 can include a connecting piece 60 connected to the heat exchange plate 20, the connecting piece 60 including a mounting piece 61 and a blocking piece 62, the lower end of the mounting piece 61 being connected to the heat exchange plate 20, the mounting piece 61 being provided with a mounting hole 611 in communication with the through hole 40, and at least part of the blocking piece 62 being inserted into the mounting hole 611 and sealing the mounting hole 611. Since the mounting hole 611 is in communication with the through hole 40, the blocking piece 62 can block the through hole 40 by blocking the mounting hole 611. In this way, the mounting piece 61 provides a mounting position for the blocking piece 62, and the blocking piece 62 can block the through hole 40 without directly contacting the through hole 40, thereby reducing damage to the through hole 40.

[0051] In the present disclosure, the sealing structure 30 can further include a sealing piece 50 including a sealing ring 51, and the blocking piece 62 has an uninserted portion 621 outside the mounting hole 611, the uninserted portion 621 being sealingly pressed against the upper end of the mounting piece 61 by the sealing ring 51. In this way, the sealing ring 51 provided between the uninserted portion 621 and the upper end of the mounting piece 61 can ensure the sealing of the connection between the blocking piece 62 and the mounting piece 61, thereby improving the sealing of the blocking piece 62 to the mounting hole 611, and further ensuring the reliability of the sealing of the sealing structure 30 to the through hole 40.

[0052] Alternatively, the mounting piece 61 can be provided as a nut, and the blocking piece 62 can be provided as a bolt, the shank of the blocking piece 62 being inserted into the mounting hole 611, and the nut of the blocking piece 62 being configured as the uninserted portion 621, the nut being sealingly pressed against the upper end of the mounting piece 61 by the sealing ring 51. Here, the use of a nut and a bolt facilitates the connection between the two to seal the through hole 40, and also facilitates the disassembly of the blocking piece 62, thereby facilitating the opening of the through hole 40 to detect the sealing of the cavity 70. Moreover, threaded connection can ensure the stability of the connection between the blocking piece 62 and the mounting piece 61, preventing the loosening of the blocking piece 62 from causing the sealing failure of the cavity. In this way, the sealing structure 30 introduces fewer components, has a simple and reliable structure, and has a simple assembly process, thereby reducing costs.

[0053] Specifically, the sealing structure 30 is provided on the bottom guard plate, for example, the nut can be brazed to a position on the cold plate having a through hole, the inner hole of the nut, i.e., the mounting hole 611, being in communication with the through hole 40, i.e., in communication with the cavity 70, and the bolt being threadedly fixed on the nut and sealing being completed by the sealing ring between the nut and the bolt. When it is necessary to seal and detect the cavity, the bolt is unscrewed, sealing detection is performed through the mounting hole 611, and after detection is completed, the bolt is tightened again, which can both detect the sealing performance of the cavity 70 and ensure the sealing of the cavity 70.

[0054] In some embodiments, the mounting piece 61 and the blocking piece 62 can also be provided as a pin shaft connection.

[0055] In the present disclosure, the lower end of the mounting member 61 can be welded to the heat exchange plate 20. In this way, a seamless connection between the mounting member 61 and the heat exchange plate 20 is achieved, which improves the sealing performance at this position and ensures the stability of the mounting of the mounting member 61.

[0056] In some embodiments, the mounting member 61 and the heat exchange plate 20 can also be connected by a snap connection, a clamping connection, or the like.

[0057] In another embodiment, as shown in FIG. 1, the bottom guard plate 10 can be provided with a recess 11 recessed towards the heat exchange plate 20, and the through hole 40 is arranged in the recess 11. In this way, the sealing structure 30 arranged on the through hole 40 is prevented from protruding too much from the bottom guard plate 10, thereby reducing the possibility of scratching the sealing structure 30, and avoiding the influence of the sealing performance of the cavity 70 due to the loosening of the sealing structure 30 caused by scratching. Figures 4 to 7 In the present disclosure, since the thickness of the bottom guard plate 10 itself is low, part of the area of the bottom guard plate 10 can be protruded towards the heat exchange plate 20 to form the recess 11. In this way, the formation of the recess 11 is facilitated, and the weight of the bottom guard plate 10 does not need to be increased, for example, the recess 11 can be formed by stamping. Arranging the through hole 40 at the bottom wall of the recess 11 can make the sealing structure 30 as much as possible inside the recess 11, thereby reducing the risk of scratching the sealing structure 30.

[0058] Optionally, the sealing structure 30 can include a connecting member 60, and the connecting member 60 includes a plug-in member 63 which is sealingly plugged into the through hole 40. In this way, the plug-in member 63 can cover the through hole 40 to prevent the cavity 70 from communicating with the outside. The lower end surface of the plug-in member 63 is higher than the lowest part of the bottom surface of the bottom guard plate 10. Here, when the bottom guard plate 10 is scratched or collided, the plug-in member 63 will not be collided, which ensures the stability of the connection of the plug-in member 63 and reduces the influence of the loosening of the plug-in member 63 on the sealing performance of the cavity 70.

[0059] In the present disclosure, the plug-in member 63 can have an abutting portion 631 located outside the through hole 40 and on the side of the bottom guard plate 10 away from the heat exchange plate 20, and the abutting portion 631 covers the through hole 40. The sealing structure 30 further includes a sealing member 50, and the sealing member 50 includes a sealing adhesive 52, and the abutting portion 631 is adhered to the bottom guard plate 10 by the sealing adhesive 52. In this way, the sealing adhesive 52 can seal the gap between the plug-in member 63 and the bottom guard plate 10, thereby improving the reliability of the sealing of the through hole 40. Moreover, the sealing adhesive 52 adheres the plug-in member 63 to the bottom guard plate 10, which can improve the stability of the connection of the plug-in member 63, thereby improving the stability of the sealing of the through hole 40.

[0060]

[0061] ​Optionally, the plug-in part 63 can be a sealing rivet, a sealing stem of the plug-in part 63 is arranged in the through hole 40, and the sealing cap is configured to shield the through hole 40 by the abutting part 631 and is bonded to the bottom guard plate 10 by the sealing glue 52. The use of the sealing rivet can facilitate the plug-in of the plug-in part 63 into the through hole 40 to seal the through hole 40 and facilitate the disassembly of the plug-in part 63. In this way, the sealing structure 30 introduces fewer components, has a simple and reliable structure, and has a simple assembly process, thereby reducing the cost.

[0062] Specifically, the sealing structure 30 is arranged on the bottom guard plate. For example, the through hole 40 is formed in the bottom guard plate 10 to communicate with the cavity 70, the sealing detection is performed through the through hole 40 after the bottom guard plate 10 is assembled to the cabinet, the sealing of the through hole 40 is completed by the sealing rivet (with sealing glue) after the sealing detection is completed, and the recess 11 extending to the heat exchange plate 20 is arranged near the through hole 40 to ensure that the sealing rivet is higher than the lowest point of the bottom guard plate 10 after the assembly of the sealing rivet is completed, the safety of the bottom is ensured, and the sealing rivet is prevented from being scratched. The present solution is not limited to the sealing rivet, and a sealing bolt can also be selected.

[0063] Here, the sealing rivet can be a closed type sealing rivet, which can better prevent the invasion of moisture and air, thereby improving the sealing performance of the cavity 70 and preventing the corrosion or damage to the heat exchange plate 20.

[0064] According to a second aspect of the present disclosure, a cabinet is provided, which includes a cabinet body and the above-mentioned bottom plate assembly 100, and the bottom plate assembly 100 is connected to the bottom of the cabinet body. The cabinet can be applied to an energy storage product which has a separate sealing requirement between the bottom guard plate and the heat exchange plate and has a sealing detection requirement in addition to the sealing requirement of the energy compartment.

[0065] According to a third aspect of the present disclosure, a battery pack is provided, which includes a battery cell and the above-mentioned cabinet, and the battery cell is arranged in the cabinet. The battery cell here can be a battery module or a single battery.

[0066] According to a fourth aspect of the present disclosure, a power consumption device is provided, which includes the above-mentioned battery pack. The power consumption device can be any device suitable for using the above-mentioned battery pack, such as a car, a ship, etc., and the present disclosure does not limit the power consumption device.

[0067] The preferred embodiments of the present disclosure are described in detail above with reference to the drawings, but the present disclosure is not limited to the specific details in the above-described embodiments. Various simple modifications can be made to the technical solutions of the present disclosure within the technical concept of the present disclosure, and these simple modifications all belong to the protection scope of the present disclosure.

[0068] It should be further noted that various specific technical features described in the above specific embodiments can be combined in any suitable manner, and the disclosure will not be repeated here for various possible combinations.

[0069] In addition, various different embodiments of the disclosure can also be combined with each other as long as they do not contradict the idea of the disclosure, and they should also be considered as disclosed by the disclosure.

Claims

1. A floor assembly, characterized by, The bottom guard plate is located below the heat exchange plate and is sealedly connected with the heat exchange plate, and a cavity is enclosed between the bottom guard plate and the heat exchange plate. A through hole is arranged on the bottom guard plate or the heat exchange plate and is used for connecting the cavity with the external environment. The sealing structure is detachably arranged on the through hole and seals the cavity. The sealing structure comprises a sealing member and a connecting member, the connecting member is connected to the bottom guard plate or the heat exchange plate where the through hole is located and shields the through hole.

2. The floorboard assembly of claim 1, wherein, The sealing member is arranged between the through hole and the connecting member. The through hole is arranged on the heat exchange plate, and the sealing structure is located on the side of the heat exchange plate away from the bottom guard plate.

3. The floorboard assembly of claim 1, wherein, The sealing structure comprises a connecting member connected to the heat exchange plate, and the connecting member comprises a mounting member and a plugging member.

4. The floor assembly of claim 3, wherein, The lower end of the mounting member is connected to the heat exchange plate, and the mounting member is provided with a mounting hole in communication with the through hole. The plugging member is inserted into the mounting hole and seals the mounting hole.

5. The floor assembly of claim 4, wherein, The plugging member has an uninserted part outside the mounting hole, and the uninserted part is sealingly and press-fitted to the upper end of the mounting member through the sealing ring. The mounting member is a nut, and the plugging member is a bolt.

6. The floor assembly of claim 5, wherein, The shank of the plugging member is inserted into the mounting hole, and the nut of the plugging member is configured as the uninserted part, and the nut is sealingly and press-fitted to the upper end of the mounting member through the sealing ring. The lower end of the mounting member is welded to the heat exchange plate.

7. The floor assembly of any of claims 4-6, wherein, The bottom guard plate is provided with a recess recessed toward the heat exchange plate, and the through hole is arranged in the recess.

8. The floor assembly of claim 1, wherein, Part of the bottom guard plate is protruded toward the heat exchange plate to form the recess, and the through hole is arranged on the bottom wall of the recess.

9. The floor assembly of claim 8, wherein, The connecting member comprises a plug-in member, and the plug-in member is sealingly plugged into the through hole.

10. The floor assembly of claim 8, wherein, The lower end face of the plug-in member is higher than the lowest part of the bottom face of the bottom guard plate. The plug-in member has an abutting part outside the through hole and on the side of the bottom guard plate away from the heat exchange plate.

11. The floor assembly of claim 10, wherein, The abutting part shields the through hole. The sealing structure further comprises a sealing member, and the sealing member comprises sealing glue, and the abutting part is adhered to the bottom guard plate through the sealing glue. The plug-in member is a sealing rivet.

12. The floor assembly of claim 11, wherein, The sealing rod of the plug-in member is arranged in the through hole, and the sealing cap of the plug-in member is configured as the abutting part and is adhered to the bottom guard plate through the sealing glue. The bottom plate assembly is connected to the bottom of the box body.

13. A case characterized by comprising: The battery pack comprises the battery cell and the box body.

14. A battery pack, characterized by The battery pack comprises the battery cell and the box body.

15. An electrical device, characterized by ​

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