Protection assembly, battery pack and electric equipment

Abstract

The embodiment of the invention provides a protection assembly, a battery pack and electric equipment. The protection assembly comprises a first protection part and a second protection part, the first protection piece is provided with a containing cavity used for containing a to-be-protected object. The second protection piece covers at least part of the first protection piece and is connected with the first protection piece, so that at least part of the surface of the to-be-protected object is isolated from the external environment. Therefore, when an object to be protected (such as a tray of a battery pack, a liquid cooling plate or other structural parts) is arranged in the accommodating cavity of the first protection part, the second protection part covers at least part of the first protection part and is connected with the first protection part, so that at least part of the surface of the object to be protected can be isolated from the external environment; therefore, the risk that the to-be-protected object is corroded can be reduced, and the safety of the battery pack can be improved.

Description

Technical Field

[0001] The present application belongs to the field of battery technology, and specifically relates to a protective component, a battery pack, and an electrical device. Background Art

[0002] With the rapid development of the new energy vehicle market, the safety performance of battery packs, as the main power source of new energy vehicles, directly affects the performance of the entire vehicle and the driving experience.

[0003] At present, battery packs are generally arranged at the bottom of the vehicle body. Battery packs usually include multiple structural parts such as trays and liquid cooling plates. The above structural parts are connected to each other to form a closed chamber for accommodating batteries. However, since structural parts such as trays and liquid cooling plates are usually made of metal, when the vehicle is driving on rainy days or passing through puddles, mud, water or other foreign matter may remain on the surface of the above structural parts and cause chemical corrosion, affecting the safety performance of the battery pack. Summary of the invention

[0004] The present application aims to provide a protective component, a battery pack and an electrical device to solve the problem that the surface of the structural parts of the existing battery pack is prone to chemical corrosion, which affects the safety performance of the battery pack.

[0005] In order to solve the above technical problems, this application is implemented as follows:

[0006] In a first aspect, the present application discloses a protection assembly, comprising: a first protection member and a second protection member;

[0007] The first protection member is provided with a receiving cavity, and the receiving cavity is used to receive the object to be protected;

[0008] The second protection member covers at least a portion of the first protection member and is connected to the first protection member, so that at least a portion of the surface of the object to be protected is isolated from the external environment.

[0009] Optionally, one of the first protective member and the second protective member is provided with a sealing groove, and the other of the first protective member and the second protective member is provided with a sealing protrusion at a position corresponding to the sealing groove, and the sealing protrusion is engaged and connected with the sealing groove.

[0010] Optionally, the first protection member is a protection frame, the protection frame includes a first side plate, and the first side plate is extended along the circumference of the protection frame to form the accommodating cavity;

[0011] The sealing groove is arranged on a side of the first side plate away from the accommodating cavity.

[0012] Optionally, the accommodating cavity has a first opening;

[0013] The second protective member is a protective cover, which includes a cover plate and a second side plate connected to the cover plate in a circumferential direction, the cover plate is arranged to cover the opening of the protective frame, and the second side plate is arranged on a side of the first side plate away from the accommodating cavity;

[0014] The sealing protrusion is arranged on a side of the second side plate close to the first side plate.

[0015] Optionally, the sealing groove comprises: a first groove wall and a second groove wall;

[0016] The first groove wall is extended along the circumference of the first side plate;

[0017] The second groove wall is arranged at one or both ends of the first groove wall along the circumference of the first side plate, and the end of the second groove wall away from the first groove wall extends to the edge of the first side plate;

[0018] Wherein, the first groove wall and the second groove wall are arranged at an obtuse angle.

[0019] Optionally, the sealing groove further includes: a third groove wall, the third groove wall is extended along the circumferential direction of the first side plate and is respectively connected to the first groove wall and the second groove wall, the third groove wall is provided with a first recess, and the first recess is recessed from the surface of the third groove wall toward the center of the accommodating cavity;

[0020] The sealing protrusion is provided with a first protrusion at a position corresponding to the first recess, and the first protrusion is engaged and connected with the first recess.

[0021] Optionally, the first side panel is a split structure.

[0022] Optionally, the first side panel comprises: a plurality of splicing sections, and the plurality of splicing sections are sequentially connected end to end.

[0023] Optionally, one of the two adjacent splicing sections is provided with a slot, and the other of the two adjacent splicing sections is provided with a block at a position corresponding to the slot, and the block is engaged with the slot.

[0024] Optionally, a first connecting portion is provided on a side of the first side plate close to the accommodating cavity, and a second connecting portion is provided on a peripheral side of the object to be protected;

[0025] The first connection portion is suitable for being sealed and connected to the second connection portion, so that the protection frame wraps at least a portion of the object to be protected.

[0026] Optionally, the first connecting portion is one of a connecting block and a connecting groove, the second connecting portion is the other of the connecting block and the connecting groove, and the connecting block is interference-fitted in the connecting groove.

[0027] Optionally, a plurality of sealing grooves are provided, and the plurality of sealing grooves are arranged at intervals along the circumference of the first protective member;

[0028] There are a plurality of sealing protrusions, which are spaced apart along the circumference of the second protective member, and one sealing protrusion is engaged and connected with one sealing groove.

[0029] Optionally, the sealing groove and the sealing protrusion are interference fit.

[0030] Optionally, the protective assembly further includes an adhesive component, which is disposed between the first protective component and the second protective component and is respectively bonded to the first protective component and the second protective component.

[0031] Optionally, the first protective member and / or the second protective member is made of foam material.

[0032] In a second aspect, the present application further discloses a battery pack, comprising: a tray, a battery, a liquid cooling plate, and the above-mentioned protective assembly;

[0033] The tray and the liquid cooling plate are connected to each other and enclose a mounting cavity;

[0034] The battery is arranged in the installation cavity;

[0035] The protective component is arranged on a side of the tray away from the installation cavity, and at least a portion of the tray is accommodated in the accommodating cavity to protect the outer surface of the tray; and / or, the protective component is arranged on a side of the liquid cooling plate away from the installation cavity, and at least a portion of the liquid cooling plate is accommodated in the accommodating cavity to protect the outer surface of the liquid cooling plate.

[0036] In a third aspect, the present application also discloses an electrical device, including the above-mentioned battery pack.

[0037] In the embodiment of the present application, since the first protective member and the second protective member are provided, when the object to be protected (such as a tray of a battery pack, a liquid cooling plate or other structural member) is provided in the accommodating cavity of the first protective member, by covering at least part of the first protective member with the second protective member and connecting with the first protective member, at least part of the surface of the object to be protected can be isolated from the external environment, thereby reducing the risk of corrosion of the object to be protected and helping to improve the safety of the battery pack.

[0038] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0040] Figure 1 This is one of the structural schematic diagrams of a protection component provided in an embodiment of the present application;

[0041] Figure 2 This is the second structural diagram of a protection component provided in an embodiment of the present application;

[0042] Figure 3 This is the third structural diagram of a protection component provided in an embodiment of the present application;

[0043] Figure 4 is a schematic diagram of the structure of the protection frame provided in an embodiment of the present application;

[0044] Figure 5 This is one of the structural schematic diagrams of a battery pack provided in an embodiment of the present application;

[0045] Figure 6 This is the second structural schematic diagram of a battery pack provided in an embodiment of the present application;

[0046] Figure 7 This is one of the schematic diagrams of assembling the protection component and the liquid cooling plate provided in the embodiment of the present application;

[0047] Figure 8 This is the second schematic diagram of the assembly of the protection component and the liquid cooling plate provided in the embodiment of the present application;

[0048] Fig. 9 This is the third schematic diagram of the assembly of the protection component and the liquid cooling plate provided in the embodiment of the present application;

[0049] Fig.10 This is one of the schematic diagrams of assembling the protective component and the tray provided in the embodiment of the present application;

[0050] Fig.11 This is the second schematic diagram of the assembly of the protection component and the tray provided in the embodiment of the present application;

[0051] Fig.12 This is the third assembly diagram of the protective component and the tray provided in the embodiment of the present application.

[0052] Figure numerals: 1. Protection assembly, 11. Protection frame, 111. Sealing groove, 1111. First groove wall, 1112. Second groove wall, 1113. Third groove wall, 112. First side plate, 1121. Splicing section, 1122. First connecting portion, 12. Protection cover, 121. Sealing protrusion, 122. Cover plate, 123. Second side plate, 2. Liquid cooling plate, 3. Tray, 4. Battery. DETAILED DESCRIPTION

[0053] Embodiments of the present invention will be described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0054] The term "first" or "second" in the specification and claims of the present application may include one or more of the features explicitly or implicitly. In the description of the present invention, unless otherwise specified, "plurality" means two or more. In addition, "and / or" in the specification and claims means at least one of the connected objects, and the character " / " generally means that the objects connected before and after are in an "or" relationship.

[0055] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0056] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0057] An embodiment of the present application provides a protection component, which will be described in detail below with reference to the accompanying drawings.

[0058] Reference Figures 1 to 3 , showing a schematic diagram of the structure of a protection component provided in an embodiment of the present application, referring to Figure 4 , shows a schematic diagram of the structure of the protection frame provided in an embodiment of the present application.

[0059] like Figures 1 to 3 As shown, the present application provides a protective assembly 1, comprising: a first protective member and a second protective member; the first protective member is provided with a accommodating cavity, the accommodating cavity is used to accommodate the object to be protected; the second protective member covers at least part of the first protective member and is connected to the first protective member, so as to isolate at least part of the surface of the object to be protected from the external environment.

[0060] In the embodiment of the present application, since the first protective member and the second protective member are provided, when the object to be protected (such as the tray 3 of the battery pack, the liquid cooling plate 2 or other structural members) is provided in the accommodating cavity of the first protective member, by covering at least part of the first protective member with the second protective member and connecting with the first protective member, at least part of the surface of the object to be protected can be isolated from the external environment, thereby reducing the risk of corrosion of the object to be protected and helping to improve the safety of the battery pack.

[0061] It should be noted that, in the embodiments of the present application, there are at least the following matching situations between the protective component and the object to be protected: (1) the first protective component is arranged around the circumference of the object to be protected, and the second protective component is arranged at the bottom of the object to be protected; (2) the first protective component is arranged around the circumference of the object to be protected and covers the top surface of the object to be protected, and the second protective component is arranged at the bottom of the object to be protected; (3) the first protective component is arranged around a part of the circumference of the object to be protected and covers the top surface of the object to be protected, and the second protective component is arranged around a part of the circumference of the object to be protected and is arranged at the bottom of the object to be protected; (4) the first protective component is arranged around a part of the circumference of the object to be protected, the second protective component is arranged around a part of the circumference of the object to be protected and is arranged at the bottom of the object to be protected, and the circumferential portion of the second protective component is stuck outside the circumferential portion of the first protective component, wherein the first protective component may cover or not cover the top surface of the object to be protected.

[0062] In some optional embodiments of the present application, one of the first protective member and the second protective member is provided with a sealing groove 111, and the other of the first protective member and the second protective member is provided with a sealing protrusion 121 at a position corresponding to the sealing groove 111, and the sealing protrusion 121 is engaged and connected with the sealing groove 111.

[0063] In the embodiment of the present application, since one of the first protective member and the second protective member is provided with a sealing groove 111, and the other is provided with a sealing protrusion 121, a stepped sealing contact surface can be formed between the first protective member and the second protective member through the engagement connection between the sealing protrusion 121 and the sealing groove 111. In this way, on the one hand, the sealing contact area between the first protective member and the second protective member can be increased, thereby improving the sealing performance of the first protective member and the second protective member; on the other hand, foreign objects entering between the first protective member and the second protective member need to bypass more obstacles, that is, the difficulty of foreign objects reaching the surface of the object to be protected is increased, thereby further reducing the risk of corrosion of the object to be protected, which is conducive to further improving the safety of the battery pack.

[0064] It should be noted that the embodiment of the present application does not limit the shape of the sealing groove 111 and the sealing protrusion 121, and those skilled in the art can adjust them according to actual needs. It is understandable that the shape of the sealing groove 111 and the sealing protrusion 121 should be consistent so that the two can be better adapted. In addition, the protective component 1 of the embodiment of the present application can be applied not only to battery packs, but also to scenarios where the surface needs to be protected. Taking the battery pack as an example, the protective component 1 can be applied to the liquid cooling plate 2, the tray 3 or other structural parts that need to be protected.

[0065] In some optional embodiments of the present application, the first protective member is a protective frame 11, which includes a first side plate 112, and the first side plate 112 is extended along the circumference of the protective frame 11 to form a receiving cavity; the sealing groove 111 is arranged on the side of the first side plate 112 away from the receiving cavity. The receiving cavity has a first opening; the second protective member is a protective cover 12, which includes a cover plate 122 and a second side plate 123 connected to the circumference of the cover plate 122, the cover plate 122 covers the first opening, and the second side plate 123 is arranged on the side of the first side plate 112 away from the receiving cavity; the sealing protrusion 121 is arranged on the side of the second side plate 123 close to the first side plate 112.

[0066] In the embodiment of the present application, the sealing groove 111 is provided on the first side plate 112 of the protective frame 11, and the sealing protrusion 121 is provided on the second side plate 123 of the protective cover 12. In this way, in the process of assembling the protective cover 12 to the protective frame 11, on the one hand, the initial positioning of the protective cover 12 can be achieved by aligning the sealing groove 111 with the sealing protrusion 121, thereby improving the convenience of assembling the protective cover 12 and the protective frame 11. On the other hand, after the protective cover 12 and the protective frame 11 are assembled, the sealing groove 111 and the sealing protrusion 121 cooperate with each other, thereby forming a stepped sealing contact surface, which is conducive to improving the sealing between the protective cover 12 and the protective frame 11, and effectively reducing or even avoiding the risk of corrosion of the object to be protected.

[0067] Furthermore, the sealing groove 111 and the sealing protrusion 121 are interference fit. On the one hand, the interference fit can ensure that the sealing groove 111 and the sealing protrusion 121 can be in close contact, so that the first side plate 112 and the second side plate 123 are fully sealed, effectively preventing foreign matter such as dust, sand, and water from the external environment from entering the interior of the protective component 1, and providing more reliable protection for the object to be protected. On the other hand, the interference fit can make the connection between the protective cover 12 and the protective frame 11 more secure, and prevent the protective cover 12 from loosening or falling off due to external impact or vibration.

[0068] In some optional embodiments of the present application, the first protective member and / or the second protective member are foamed materials. Specifically, the protective frame 11 and / or the protective cover 12 are foamed materials. Taking the protective component 1 applied to the battery pack as an example, on the one hand, due to the characteristics of light weight and high strength of the foamed material, while improving the overall structural strength of the protective component 1, the overall weight of the protective component 1 can also be greatly reduced, which is conducive to the overall lightweight of the battery pack. On the other hand, since the foamed material has good thermal insulation and insulation properties, it can provide a more stable and safe working environment for components such as the battery 4 in the battery pack, which is conducive to improving the safety performance of the battery pack. In addition, since the foamed material has good buffering and shock resistance, when the vehicle encounters complex road conditions and bumps or foreign objects hit the battery pack, the protective component 1 can effectively absorb and disperse the impact force, thereby protecting the battery 4 and other components in the battery pack from damage, which is conducive to improving the safety of the battery pack. In addition, compared with the technical solution of adding a coating on the surface of the object to be protected to achieve anti-corrosion in the related art, the protective component 1 processed by the foamed material is low in cost and recyclable, which can reduce the manufacturing cost of the battery pack and reduce environmental pollution.

[0069] It should be noted that the foam material used for the first protective member and / or the second protective member includes but is not limited to polyethylene (PE), polypropylene (PP), polypropylene oxide (PO) and polyphenylene ether (PPO) or other materials, which are not limited here and technical personnel in this field can choose according to actual needs.

[0070] In some optional embodiments of the present application, such as Figure 4 As shown, the sealing groove 111 includes: a first groove wall 1111 and a second groove wall 1112; the first groove wall 1111 is extended along the circumference of the first side plate 112; the second groove wall 1112 is arranged at one or both ends of the first groove wall 1111 along the circumference of the first side plate 112, and the end of the second groove wall 1112 away from the first groove wall 1111 extends to the edge of the first side plate 112; wherein the first groove wall 1111 and the second groove wall 1112 are arranged at an obtuse angle. Specifically, the end of the second groove wall 1112 away from the first groove wall 1111 extends to the edge of the first side plate 112 close to the cover plate 122, that is, Figure 4The upper edge of the first side plate 112 along the first direction X.

[0071] In the embodiment of the present application, since the first groove wall 1111 and the second groove wall 1112 are arranged at an obtuse angle, that is, the second groove wall 1112 is inclined relative to the first groove wall 1111, and the corner of the sealing groove 111 is an obtuse angle. In this way, on the one hand, stress concentration at the corner of the sealing groove 111 can be avoided, and cracks at the corner can be effectively avoided, and the problem of foreign matter reaching the surface of the object to be protected through the cracks can be effectively avoided, which is beneficial to improving the protection reliability of the protection component 1. On the other hand, when the protection component 1 is subjected to external impact, part of the impact force can be effectively dispersed in the inclined second groove wall 1112, thereby reducing the impact of the impact on the protection component 1 as a whole. In addition, foreign matter such as dust or sediment deposited at the corner can be easily carried away by the water flow, avoiding foreign matter from remaining at the corner, which is beneficial to further reduce the possibility of foreign matter reaching the surface of the object to be protected.

[0072] It should be noted that the first groove wall 1111 and the second groove wall 1112 of the embodiment of the present application are not limited to the above-mentioned obtuse angle setting structure, and can also be a right angle setting structure or an acute angle setting structure, or a mutually adapted profiling structure, etc., which is not limited here, and those skilled in the art can make adjustments according to actual needs. It is understandable that when the first groove wall 1111 and the second groove wall 1112 are in an obtuse angle setting structure, not only can the stress concentration at the corner and the deposition of foreign matter be avoided, but also the structure is simple and easy to process.

[0073] In addition, for the protective assembly 1 applied to the liquid cooling plate 2 or the tray 3, the first direction X is generally a vertical direction, and correspondingly, the first groove wall 1111 of the sealing groove 111 is extended in the horizontal direction. In addition, the drawings of the embodiment of the present application only show that there is one second groove wall 1112, and the second groove wall 1112 is arranged at one end of the first groove wall 1111, while in actual application, there may be two second groove walls 1112, and the two second groove walls 1112 are respectively arranged at the two ends of the first groove wall 1111, which is not limited here, and those skilled in the art may make adjustments according to actual needs.

[0074] In some optional embodiments of the present application, the sealing groove 111 further includes: a third groove wall 1113, the third groove wall 1113 is extended along the circumference of the first side plate 112 and is respectively connected to the first groove wall 1111 and the second groove wall 1112, the third groove wall 1113 is provided with a first recess, the first recess is recessed from the surface of the third groove wall 1113 toward the center of the accommodating cavity; the sealing protrusion 121 is provided with a first protrusion at a corresponding position of the first recess, and the first protrusion is engaged with the first recess. Further, the first recess has a first center line, and the first protrusion has a second center line, the second center line coincides with the first center line, and both are perpendicular to the first direction X.

[0075] In the embodiment of the present application, by providing the first recess on the third groove wall 1113, a stepped recess structure can be formed on the first side plate 112, and by providing the first protrusion on the sealing protrusion 121, a stepped protrusion structure can be formed on the second side plate 123. In this way, through the dual cooperation of the first recess and the first protrusion, and the sealing groove 111 and the sealing protrusion 121, a more complex stepped sealing contact surface can be formed between the first side plate 112 and the second side plate 123, so that the sealing between the protection frame 11 and the protection cover 12 can be further improved, which is conducive to improving the protection reliability of the protection component 1.

[0076] It should be noted that, taking a single sealing groove 111 as an example, the embodiment of the present application does not limit the shape and number of the first recesses on the third groove wall 1113 of the sealing groove 111, and those skilled in the art can adjust it according to actual needs. In one embodiment, there is one first recess, and the first recess has the same shape as the sealing groove 111, and correspondingly, there is one first protrusion, and the first protrusion has the same shape as the sealing protrusion 121, which can reduce the difficulty of processing the protective component 1.

[0077] In some optional embodiments of the present application, a plurality of sealing grooves 111 are provided, and the plurality of sealing grooves 111 are arranged at intervals along the circumference of the first protective member; a plurality of sealing protrusions 121 are provided, and the plurality of sealing protrusions 121 are arranged at intervals along the circumference of the second protective member, and one sealing protrusion 121 is engaged and connected with one sealing groove 111. Specifically, when the first protective member is the protective frame 11 and the second protective member is the protective cover 12, the plurality of sealing grooves 111 are arranged at intervals along the circumference of the first side plate 112 of the protective frame 11, and the plurality of sealing protrusions 121 are arranged at intervals along the circumference of the second side plate 123 of the protective cover 12.

[0078] In the embodiment of the present application, the first protective member is provided with a plurality of sealing grooves 111 at intervals in the circumferential direction, and the second protective member is provided with a plurality of sealing protrusions 121 at intervals in the circumferential direction. Through the one-to-one matching of the sealing grooves 111 and the sealing protrusions 121, the first protective member and the second protective member can be sealed and connected in the entire circumferential direction, which is beneficial to improving the overall sealing performance of the protective assembly 1.

[0079] It should be noted that the embodiment of the present application does not limit the number of sealing grooves 111 and sealing protrusions 121, and those skilled in the art can adjust according to actual needs. In one embodiment, the first protective member is a protective frame 11, the second protective member is a protective cover 12, the cross section of the first side plate 112 perpendicular to the center line of the protective frame 11 is square, and each of the four sides of the first side plate 112 is provided with a sealing groove 111; correspondingly, the cross section of the second side plate 123 perpendicular to the center line of the protective frame 11 is also square, and each of the four sides of the second side plate 123 is provided with a sealing protrusion 121.

[0080] In some optional embodiments of the present application, the first side plate 112 is a split structure. In this way, on the one hand, the processing difficulty of the first side plate 112 can be reduced; on the other hand, it is easy to disassemble and replace, which is conducive to reducing maintenance costs. It should be noted that when the protective frame 11 is made of foam material, the first side plate 112 can also be an integrated structure. For example, Figures 10 to 12 As shown, an online foaming process can be used to directly form the foaming material integrally around the object to be protected (such as the tray 3).

[0081] In some optional embodiments of the present application, the first side plate 112 includes: a plurality of splicing sections 1121, and the plurality of splicing sections 1121 are sequentially connected end to end. Specifically, one of two adjacent splicing sections 1121 is provided with a card slot, and the other of the two adjacent splicing sections 1121 is provided with a card block at a position corresponding to the card slot, and the card block is card-engaged with the card slot.

[0082] In the embodiment of the present application, since a plurality of splicing segments 1121 are provided, for different application scenarios, splicing segments 1121 of different numbers and shapes can be selected for splicing, thereby improving the configuration flexibility and versatility of the protective component 1. Since two adjacent splicing segments 1121 are respectively provided with a card block and a card slot, the two splicing segments 1121 can be reliably connected together through the card connection between the card block and the card slot. On the one hand, this card connection structure is simple, which can improve the convenience of disassembly and assembly between the splicing segments 1121, and is conducive to improving the assembly efficiency of the protective component 1. On the other hand, through the close contact between the card slot and the card block, the sealing between the splicing segments 1121 can be improved to prevent foreign matter from the external environment from entering the interior of the protective component 1.

[0083] In some optional embodiments of the present application, a first connecting portion 1122 is provided on the side of the first side plate 112 close to the accommodating cavity, and a second connecting portion is provided on the peripheral side of the object to be protected; the first connecting portion 1122 is adapted to be sealed and connected with the second connecting portion, so that the protection frame 11 wraps at least part of the object to be protected. Specifically, the first connecting portion 1122 is one of a connecting block or a connecting groove, and the second connecting portion is the other of the connecting block or the connecting groove, and the connecting block is interference-fitted with the connecting groove.

[0084] In the embodiment of the present application, since the first side panel 112 is provided with a first connection portion 1122, and the object to be protected is provided with a second connection portion, the protective frame 11 can wrap at least a portion of the object to be protected through the sealed connection between the first connection portion 1122 and the second connection portion, effectively preventing foreign matter from entering between the first side panel 112 and the object to be protected. Since the first connection portion is one of the connection block or the connection groove, and the first connection portion 1122 is the other of the connection block or the connection groove, the connection block is interference-fitted with the connection groove. In this way, on the one hand, this concave-convex matching structure is easy to process, which helps to reduce the processing difficulty of the protective frame 11. On the other hand, due to the interference fit between the connection block and the connection groove, not only the connection strength between the protective frame 11 and the object to be protected can be improved, but also the sealing between the protective frame 11 and the object to be protected can be improved.

[0085] It should be noted that, usually, the connection block or connection groove provided on the object to be protected is the structure of the object to be protected itself, that is, a convex structure or a concave structure formed on the outer surface of the object to be protected. By providing a concave structure adapted to the convex structure at the corresponding position of the first side plate 112, or providing a convex structure adapted to the concave structure, the convex structure cooperates with the concave structure to achieve a sealed connection between the object to be protected and the protection frame 11.

[0086] In some optional embodiments of the present application, the protective assembly 1 further includes an adhesive member, which is disposed between the first protective member and the first protective member and is bonded to the first protective member and the first protective member respectively. In this way, since the adhesive member is disposed between the first protective member and the first protective member, the connection strength between the first protective member and the first protective member can be improved by bonding the adhesive member to the first protective member and the first protective member, so that the two can be reliably fixed together.

[0087] It should be noted that the adhesive of the embodiment of the present application includes but is not limited to hot melt adhesive. In a specific application, when the first protective member is a protective frame 11 and the second protective member is a protective cover 12, the adhesive can be arranged only between the first side panel 112 and the second side panel 123, or only between the first side panel 112 and the cover panel 122, or simultaneously between the first side panel 112 and the second side panel 123, and between the first side panel 112 and the cover panel 122. The embodiment of the present application does not limit the specific setting position of the adhesive, and those skilled in the art can adjust it according to actual needs. In addition, the protective cover 12 and the protective frame 11 can also be connected in other ways, such as bolt connection, clamping, etc. It can be understood that since the bonding method is simple and reliable, and can also improve the sealing effect of the protective cover 12 and the protective frame 11 to a certain extent, the embodiment of the present application preferably uses a bonding method to connect the protective cover 12 and the protective frame 11.

[0088] In summary, the protection assembly provided by the embodiment of the present application has at least the following advantages:

[0089] In the embodiment of the present application, since the first protective member and the second protective member are provided, when the object to be protected (such as a tray of a battery pack, a liquid cooling plate or other structural member) is provided in the accommodating cavity of the first protective member, by covering at least part of the first protective member with the second protective member and connecting with the first protective member, at least part of the surface of the object to be protected can be isolated from the external environment, thereby reducing the risk of corrosion of the object to be protected and helping to improve the safety of the battery pack.

[0090] Reference Figures 5 and 6 , showing a schematic diagram of the structure of a battery pack provided in an embodiment of the present application, referring to Figures 7 to 9 , shows a schematic diagram of the assembly of the protection assembly and the liquid cooling plate provided in the embodiment of the present application, with reference to Figures 10 to 12 , showing a schematic diagram of the assembly of the protective component and the tray provided in an embodiment of the present application.

[0091] like Figures 5 and 6 As shown, an embodiment of the present application further provides a battery pack, comprising: a tray 3, a battery 4, a liquid cooling plate 2 and the protective component 1 of any one of the above embodiments; the tray 3 and the liquid cooling plate 2 are interconnected and enclosed to form an installation cavity; the battery 4 is arranged in the installation cavity; the protective component 1 is arranged on the side of the tray 3 away from the installation cavity, and at least a part of the tray 3 is accommodated in the accommodating cavity to protect the outer surface of the tray 3; and / or, the protective component 1 is arranged on the side of the liquid cooling plate 2 away from the installation cavity, and at least a part of the liquid cooling plate 2 is accommodated in the accommodating cavity to protect the outer surface of the liquid cooling plate 2.

[0092] In the embodiment of the present application, by providing a protective component 1 on the side of the tray 3 away from the battery 4, at least the bottom surface of the tray 3 (i.e., the surface of the tray 3 away from the battery 4) can be isolated from the external environment, thereby reducing the risk of corrosion of the tray 3, which is beneficial to improving the safety of the battery pack. By providing a protective component 1 on the side of the liquid cooling plate 2 away from the battery 4, at least the top surface of the liquid cooling plate 2 (i.e., the surface of the liquid cooling plate 2 away from the battery 4) can be isolated from the external environment, thereby reducing the risk of corrosion of the liquid cooling plate 2, which is beneficial to improving the safety of the battery pack.

[0093] Specifically, taking the liquid cooling plate 2 as an example, the liquid cooling plate 2 includes a support plate and a flow channel plate which are arranged in the vertical direction and connected to each other. The support plate is arranged close to the battery 4, and the flow channel plate is provided with a flow channel groove. The flow channel groove and the support plate are enclosed to form a flow channel. By passing the coolant into the flow channel, the battery 4 can be cooled. Since the flow channel plate is arranged at the top and the surface of the flow channel plate is uneven, water accumulation is likely to occur, causing the flow channel plate to be corroded. By arranging a protective component 1 on the liquid cooling plate 2, the problem of water accumulation on the surface of the flow channel plate can be avoided. Specifically, as Figures 7 to 9As shown, a connection groove extending along the circumference of the protection frame 11 is provided on one side of the first side plate 112 close to the accommodating cavity, and the surrounding edges of the liquid cooling plate 2 (at this time, the surrounding edges of the liquid cooling plate 2 serve as connection blocks that cooperate with the connection groove) are interference-fitted in the connection groove, thereby realizing a reliable connection between the protection frame 11 and the liquid cooling plate 2. Then, the protection cover 12 is assembled to the top of the protection frame 11, and the sealing groove 111 of the first side plate 112 is connected with the sealing protrusion 121 of the second side plate 123, thereby realizing a sealed connection between the protection cover 12 and the protection frame 11, effectively preventing external foreign matter from reaching the flow channel plate, thereby realizing reliable protection of the flow channel plate.

[0094] Take the pallet as an example. Figures 10 to 12 As shown, the circumference of the tray 3 is processed into an integrally formed protection frame 11 through an online foaming process, so as to realize a reliable connection between the protection frame 11 and the tray 3. Then, the protection cover 12 is assembled to the bottom of the protection frame 11, and the sealing groove 111 of the first side plate 112 is matched with the sealing protrusion 121 of the second side plate 123, so that the protection cover 12 and the protection frame 11 can be sealed and connected, effectively preventing external foreign matter from reaching the bottom surface of the tray 3, thereby realizing reliable protection of the tray 3.

[0095] It should be noted that in the embodiment of the present application, the structure of the protective component 1 is the same as the structure of the protective component 1 in any of the above embodiments, and its beneficial effects are similar, which will not be described in detail here. In addition, the protective component 1 in the embodiment of the present application can also be applied to other scenarios where liquids or foreign objects need to be prevented from entering the structural parts, which is not limited here, and those skilled in the art can make adjustments according to actual needs.

[0096] An embodiment of the present application also provides an electrical device, comprising the battery pack of the above embodiment.

[0097] It should be noted that in the embodiment of the present application, the structure of the battery pack is the same as that of the battery pack in any of the above embodiments, and its beneficial effects are similar, which will not be described in detail here. In addition, the electrical equipment in the embodiment of the present application includes but is not limited to vehicles, ferries, computers, aircraft or other equipment, which are not limited here, and those skilled in the art can make adjustments according to actual needs.

[0098] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0099] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A protective component, characterized in that: include: a first guard and a second guard; The first protection member is provided with a receiving cavity, and the receiving cavity is used to receive the object to be protected; The second protection member covers at least a portion of the first protection member and is connected to the first protection member, so that at least a portion of the surface of the object to be protected is isolated from the external environment.

2. The protection assembly according to claim 1, characterized in that: One of the first protective member and the second protective member is provided with a sealing groove, and the other of the first protective member and the second protective member is provided with a sealing protrusion at a position corresponding to the sealing groove, and the sealing protrusion is engaged and connected with the sealing groove.

3. The protection assembly according to claim 2, characterized in that: The first protection member is a protection frame, and the protection frame includes a first side plate, and the first side plate is extended along the circumference of the protection frame to form the accommodating cavity; The sealing groove is arranged on a side of the first side plate away from the accommodating cavity.

4. The protection assembly according to claim 3, characterized in that: The accommodating cavity has a first opening; The second protective member is a protective cover, which includes a cover plate and a second side plate connected to the cover plate in a circumferential direction, the cover plate is arranged to cover the first opening, and the second side plate is arranged on a side of the first side plate away from the accommodating cavity; The sealing protrusion is arranged on a side of the second side plate close to the first side plate.

5. The protection assembly according to claim 4, characterized in that: The sealing groove comprises: a first groove wall and a second groove wall; The first groove wall is extended along the circumference of the first side plate; The second groove wall is arranged at one or both ends of the first groove wall along the circumference of the first side plate, and the end of the second groove wall away from the first groove wall extends to the edge of the first side plate; Wherein, the first groove wall and the second groove wall are arranged at an obtuse angle.

6. The protection assembly according to claim 5, characterized in that: The sealing groove further includes: a third groove wall, the third groove wall is extended along the circumferential direction of the first side plate and is respectively connected to the first groove wall and the second groove wall, the third groove wall is provided with a first recess, and the first recess is recessed from the surface of the third groove wall toward the center of the accommodating cavity; The sealing protrusion is provided with a first protrusion at a position corresponding to the first recess, and the first protrusion is engaged and connected with the first recess.

7. The protection assembly according to any one of claims 3 to 6, characterized in that: The first side panel is a split structure.

8. The protection assembly according to claim 7, characterized in that: The first side panel includes: a plurality of splicing sections, and the plurality of splicing sections are sequentially connected end to end.

9. The protection assembly according to claim 8, characterized in that: One of the two adjacent splicing sections is provided with a slot, and the other of the two adjacent splicing sections is provided with a block at a position corresponding to the slot, and the block is engaged with the slot.

10. The protection assembly according to any one of claims 3 to 6, characterized in that: A first connecting portion is provided on a side of the first side plate close to the accommodating cavity, and a second connecting portion is provided on a peripheral side of the object to be protected; The first connection portion is suitable for being sealed and connected to the second connection portion, so that the protection frame wraps at least a portion of the object to be protected.

11. The protection assembly according to claim 10, characterized in that: The first connection portion is one of a connection block and a connection groove, the second connection portion is the other of the connection block and the connection groove, and the connection block is interference-fitted in the connection groove.

12. The protection assembly according to any one of claims 2 to 6, characterized in that: The sealing grooves are provided in plurality, and the plurality of sealing grooves are arranged at intervals along the circumference of the first protective member; There are a plurality of sealing protrusions, which are spaced apart along the circumference of the second protective member, and one sealing protrusion is engaged and connected with one sealing groove.

13. The protection assembly according to any one of claims 2 to 6, characterized in that: The sealing groove and the sealing protrusion are interference fit.

14. The protection assembly according to any one of claims 1 to 6, characterized in that: The protection assembly further includes an adhesive component, which is disposed between the first protection component and the second protection component and is respectively bonded to the first protection component and the second protection component.

15. The protection assembly according to any one of claims 1 to 6, characterized in that: The first protection member and / or the second protection member are made of foam material.

16. A battery pack, characterized in that: include: A tray, a battery, a liquid cooling plate, and a protective assembly according to any one of claims 1 to 15; The tray and the liquid cooling plate are connected to each other and enclose a mounting cavity; The battery is arranged in the installation cavity; The protective component is arranged on a side of the tray away from the installation cavity, and at least a portion of the tray is accommodated in the accommodating cavity to protect the outer surface of the tray; and / or, the protective component is arranged on a side of the liquid cooling plate away from the installation cavity, and at least a portion of the liquid cooling plate is accommodated in the accommodating cavity to protect the outer surface of the liquid cooling plate.

17. An electrical equipment, characterized in that: A battery pack comprising the battery pack of claim 16.

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