Protective structure and battery equipment
By introducing an isolation layer, an isolation energy-absorbing layer and a buffer layer into the battery pack protective structure, the problem of vulnerability to the protective structure in the prior art is solved and the overall mechanical strength is improved.
Patent Information
- Application Number
- CN202421080004.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-14
- Publication Date
- 2025-03-18
- Estimated Expiration
- 2034-05-14
AI Technical Summary
The existing battery pack protective structure is easily damaged by electrochemical corrosion of the energy absorbing layer and buffer layer, resulting in a decrease in overall mechanical strength.
A protective structure is sequentially stacked along the first preset direction, including a first protective outer layer, an energy absorbing layer, an isolation layer, a buffer layer and a second protective outer layer. The isolation layer is used to isolate the energy absorbing layer and a buffer layer to avoid direct contact.
Through the isolation effect of the isolation layer, electrochemical corrosion between the energy absorbing layer and the buffer layer is avoided, the tensile strength of the energy absorbing layer and the connection strength of the buffer layer are maintained, and the overall mechanical strength of the entire protective structure is improved.
Smart Images
Figure CN222637476U_ABST
Abstract
Description
Technical Field
[0001] The present application belongs to the technical field of battery devices, and more specifically, to a protective structure and a battery device. Background Art
[0002] When new energy vehicles are driving on uneven and complex roads, the bottom of the battery pack is easily damaged and deformed by bumps, scratches, and squeezing from foreign objects on the road. This will not only pose a huge hidden danger to the safety of new energy vehicles, but also bring high maintenance costs. Therefore, the bottom of the battery pack is usually equipped with a protective structure with a certain impact resistance to protect the battery pack and improve the safety of the vehicle.
[0003] Most of the existing protective structures are sandwich structures, which include a protective outer layer, an energy absorbing layer and a buffer layer stacked in sequence. To ensure the energy absorbing and buffering effects, the energy absorbing layer and the buffer layer are both made of metal materials; however, the above design method is prone to electrochemical corrosion of the energy absorbing layer and the buffer layer, causing damage to the entire protective structure, thereby resulting in a decrease in the overall mechanical strength of the entire protective structure. Utility Model Content
[0004] The purpose of the embodiments of the present application is to provide a protective structure and a battery device, aiming to solve the technical problem that the protective structure in the prior art is easily damaged.
[0005] To achieve the above-mentioned purpose, according to one aspect of the present application, a protective structure is provided, which includes a first protective outer layer, an energy absorption layer, an isolation layer, a buffer layer and a second protective outer layer which are stacked in sequence along a first preset direction. The energy absorption layer and the buffer layer are both made of metal, and the isolation layer is used to isolate the energy absorption layer and the buffer layer.
[0006] Optionally, the buffer layer includes a plurality of buffer bodies connected in sequence along a second preset direction, and the second preset direction forms an angle with the first preset direction; the buffer body includes a plurality of buffer connectors and a plurality of buffer rings, and two adjacent buffer rings in the buffer body are connected by a buffer connector, and the buffer rings are provided with a buffer space for buffering deformation of the buffer rings; the buffer ring in one of the two adjacent buffer bodies is connected to the buffer ring in the other buffer body, and a buffer gap is provided between the buffer connector in one of the two adjacent buffer bodies and the buffer connector in the other buffer body for buffering deformation of the buffer connector.
[0007] Optionally, the buffer ring includes two first buffer plates symmetrically arranged with a preset plane as the center, the preset plane is a plane where the first preset direction and the third preset direction are located, and the first preset direction and the second preset direction are at an angle to each other with the three preset directions; the two first buffer plates in the buffer ring protrude in directions away from each other, so that buffer areas are formed on the surfaces of the two first buffer plates in the buffer ring that are close to each other, and the two buffer areas are connected to form a buffer space; the buffer connector includes two buffer connecting plates symmetrically arranged with the preset plane as the center, and the two buffer connecting plates in the buffer connector are connected; One of the two buffer connecting plates is connected to a first buffer plate in an adjacent buffer ring to form a first buffer unit. There are multiple first buffer units, which are connected in sequence along a third preset direction to form a first buffer component. The other buffer connecting plate is connected to another first buffer plate in an adjacent buffer ring to form a second buffer unit. There are multiple second buffer units, which are connected in sequence along the third preset direction to form a second buffer component. The first buffer component and the second buffer component are symmetrically arranged with the preset plane as the center to form a buffer body.
[0008] Optionally, the second preset direction is perpendicular to the first preset direction, and the first preset direction and the second preset direction are both perpendicular to the third preset direction; the two buffer connecting plates in the buffer connecting member are fit connected; the first buffer plate is a bent plate, and the first buffer plate in the buffer ring member in one of two adjacent buffer bodies is fit connected with the first buffer plate in the buffer ring member in the other buffer body.
[0009] Optionally, the buffer layer includes a plurality of buffer corrugated boards connected in sequence along a first preset direction, and the buffer corrugated boards have a buffer space for buffering deformation of the buffer corrugated boards.
[0010] Optionally, the number of buffer corrugated boards is two, the buffer corrugated boards include multiple first connecting boards and multiple second buffer boards, two adjacent second buffer boards in the buffer corrugated boards are connected by the first connecting board; the first connecting board in one of the two buffer corrugated boards is fit-connected with the first connecting board in the other buffer corrugated board, the second buffer board in the buffer corrugated board is a bent board, and the second buffer board protrudes in the direction away from the first connecting board so that the second buffer board forms a buffer space for buffering deformation of the second buffer board.
[0011] Optionally, the buffer corrugated board includes multiple second connecting plates and multiple third buffer plates, and two adjacent third buffer plates in the buffer corrugated board are connected by the second connecting plate; the third buffer plate in the buffer corrugated board protrudes in a direction away from the second connecting plate, so that the third buffer plate forms a buffer space for buffering deformation of the third buffer plate; a flat sheet is clamped and fixed between two adjacent buffer corrugated boards.
[0012] Optionally, the second connecting plate in one of two adjacent buffer corrugated plates is bonded and connected to the flat sheet, and the second connecting plate or the third buffer plate in the other buffer corrugated plate is bonded and connected to the flat sheet.
[0013] Optionally, the buffer space is filled with a filler.
[0014] According to another aspect of the present application, a battery device is provided, which includes a battery pack and the above-mentioned protective structure, the battery pack has an exposed surface, and the second protective outer layer is installed to cover the exposed surface of the battery pack.
[0015] The beneficial effect of the protective structure provided by the present application is that compared with the prior art, the protective structure of the present application avoids electrochemical corrosion of the energy absorption layer and the buffer layer, which are both metal parts, due to direct contact under the isolation effect of the isolation layer, thereby avoiding the formation of rust on the surface of the energy absorption layer, ensuring the tensile strength of the energy absorption layer and the connection strength between the energy absorption layer and the buffer layer, and further ensuring the overall mechanical strength of the entire protective structure. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.
[0017] Figure 1 A schematic diagram of the structure of the protection structure provided in the embodiment of the present application;
[0018] Figure 2 A schematic structural diagram of a buffer layer in a first embodiment provided in the present application;
[0019] Figure 3 for Figure 2 The enlarged schematic diagram of point A in the middle;
[0020] Figure 4 A schematic structural diagram of a buffer body in a first embodiment provided in the present application;
[0021] Figure 5A schematic structural diagram of a first buffer member in a first embodiment provided in the present application;
[0022] Figure 6 A schematic structural diagram of a second buffer component in the first embodiment provided in the present application;
[0023] Figure 7 A schematic structural diagram of a buffer layer in a second embodiment provided in the present application;
[0024] Figure 8 for Figure 7 The enlarged schematic diagram of point B in the middle;
[0025] Fig. 9 A schematic structural diagram of a buffer corrugated board in a second embodiment provided in the present application;
[0026] Fig.10 A schematic structural diagram of a buffer layer in a third embodiment provided in the present application;
[0027] Fig.11 for Fig.10 The enlarged schematic diagram of the center C;
[0028] Fig.12 A schematic structural diagram of a buffer layer in a third embodiment provided in the present application;
[0029] Fig.13 for Fig.12 Enlarged schematic diagram of point D in the middle.
[0030] The reference numerals in the above drawings are as follows:
[0031] 100, first protective outer layer; 200, energy absorbing layer; 300, isolation layer;
[0032] 400, buffer layer; 410a, buffer body; 410b, buffer corrugated board;
[0033] 411, buffer connection piece; 4111, buffer connection plate; 4112, buffer gap; 412, buffer ring piece; 4121, first buffer plate;
[0034] 413. First connecting plate; 414. Second buffer plate;
[0035] 415, second connecting plate; 416, third buffer plate;
[0036] 417, buffer space; 4171, buffer area;
[0037] 418, first buffer member; 4181, first buffer unit; 419, second buffer member; 4191, second buffer unit;
[0038] 500. Second protective outer layer; 600. Flat sheet. DETAILED DESCRIPTION
[0039] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.
[0040] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or indirectly connected to the other element. In the absence of conflict, the embodiments in this application and the features in the embodiments may be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.
[0041] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application 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 a limitation on the present application.
[0042] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.
[0043] As described in the background technology, at present, when new energy vehicles are driving on uneven and complex roads, the bottom of the battery pack is easily damaged and deformed by bumps, scratches, and extrusions from foreign objects on the road, which not only poses a huge hidden danger to the safety of new energy vehicles, but also brings high maintenance costs. Therefore, the bottom of the battery pack is usually equipped with a protective structure with a certain impact resistance to protect the battery pack and improve the safety of the vehicle. Most of the existing protective structures are sandwich structures, which include a protective outer layer, an energy absorption layer, and a buffer layer stacked in sequence. To ensure the energy absorption effect and the buffer effect, the energy absorption layer and the buffer layer are made of metal materials; however, the above design method is prone to electrochemical corrosion of the energy absorption layer and the buffer layer, which damages the entire protective structure, thereby causing the overall mechanical strength of the entire protective structure to decrease.
[0044] Reference Figure 1 , Figure 2 , Figure 7 , Fig.10 as well as Fig.12 In order to solve the above problems, according to one aspect of the present application, an embodiment of the present application provides a protective structure, which includes a first protective outer layer 100, an energy absorbing layer 200, an isolation layer 300, a buffer layer 400 and a second protective outer layer 500 stacked in sequence along a first preset direction, the energy absorbing layer 200 and the buffer layer 400 are both made of metal, and the isolation layer 300 is used to isolate the energy absorbing layer 200 and the buffer layer 400.
[0045] In the embodiments of the present application, the protective structure is generally used to be installed and covered on a battery pack. The battery pack has an exposed surface, and the protective structure is fixedly covered on the exposed surface of the battery pack. In other embodiments, the protective structure can also be used to be installed and covered on other equipment; the energy absorption layer 200 is generally made of high-strength steel plate to absorb most of the impact energy. In other embodiments, the energy absorption layer 200 can also be made of other high-strength metal materials; the buffer layer 400 is generally made of aluminum, which is not only convenient for processing and manufacturing, but also can reduce the weight of the protective structure. In other embodiments, the buffer layer 400 can also be made of stainless steel or other composite materials, for example, hollow microsphere composite resin material; the isolation layer 300 is fixedly clamped between the energy absorption layer 200 and the buffer layer 400. The isolation layer 300 is generally an aluminum foil sheet. In other embodiments, it can also be a non-woven fabric or a glass fiber board to play an isolation role.
[0046] The protective structure of the present application avoids electrochemical corrosion of the energy absorbing layer 200 and the buffer layer 400, both of which are metal parts, due to direct contact under the isolation effect of the isolation layer 300, thereby avoiding the formation of rust on the surface of the energy absorbing layer 200, ensuring the tensile strength of the energy absorbing layer 200 and the connection strength between the energy absorbing layer 200 and the buffer layer 400, and further ensuring the overall mechanical strength of the entire protective structure.
[0047] In addition, the first protective outer layer 100 is generally made of fiber-reinforced resin material, which can not only improve the corrosion resistance and wear and scratch resistance of the protective structure, but also effectively improve the rigidity and strength of the protective structure, so that the protective structure has better impact resistance. In addition, it can also prevent the energy-absorbing layer 200 from directly contacting with water vapor in the air and rusting, thereby ensuring the tensile strength of the energy-absorbing layer 200. The second protective outer layer 500 is generally fixedly covered on the exposed surface of the battery pack and is made of fiber-reinforced resin material. The second protective outer layer 500 not only plays a protective role together with the first protective outer layer 100, but also plays a connecting role, so that the protective structure can be smoothly installed on external equipment. To facilitate the assembly of the protective structure, the two adjacent layer structures are bonded by hot-melt adhesive film. In other embodiments, the two adjacent layer structures can also be connected by welding.
[0048] Reference Figures 2 to 6 In the first embodiment, the buffer layer 400 includes a plurality of buffer bodies 410a connected in sequence along a second preset direction, and the second preset direction forms an angle with the first preset direction; the buffer body 410a includes a plurality of buffer connectors 411 and a plurality of buffer rings 412, and two adjacent buffer rings 412 in the buffer body 410a are connected by the buffer connector 411, and the buffer ring 412 is provided with a buffer space 417 for buffering deformation of the buffer ring 412; the buffer ring 412 in one of the two adjacent buffer bodies 410a is connected to the buffer ring 412 in the other buffer body 410a, and a buffer gap 4112 is provided between the buffer connector 411 in one of the two adjacent buffer bodies 410a and the buffer connector 411 in the other buffer body 410a for buffering deformation of the buffer connector 411.
[0049] In this embodiment, two adjacent buffer bodies 410a are fixedly connected, and the buffer bodies 410a are provided so that the buffer layer 400 plays a buffering role. The buffer connectors 411 and buffer rings 412 in the buffer bodies 410a are arranged in the form of buffer connectors 411, buffer rings 412, buffer connectors 411, buffer rings 412..., wherein the buffer connectors 411 are fixedly connected to two adjacent buffer rings 412; the buffer ring 412 in one buffer body 410a of two adjacent buffer bodies 410a is fixedly connected to the buffer ring 412 in the other buffer body 410a by overall gluing, interval gluing or laser welding; the provided buffer space 417 provides the buffer ring 412 with a buffer area that can be deformed and buffered, and the provided buffer gap 4112 provides the buffer connector 411 with a buffer area that can be deformed and buffered. The impact area makes it possible for the buffer layer 400 to be transmitted along the edges of the buffer body 410a when it is impacted, which not only ensures that the buffer body 410a is evenly stressed, but also improves the static compression strength of the buffer body 410a, so that the buffer body 410a can effectively absorb energy and buffer, thereby effectively improving the overall impact resistance of the buffer layer 400; the multiple buffer bodies 410a together form a honeycomb structure that has a mutual reinforcement effect with the energy absorption layer 200, so that the buffer layer 400 can not only flexibly adjust its overall strength and adaptability by changing the material, thickness, shape or number of the buffer body 410a, but also reduce the difficulty and cost of the assembly process, and of course reduce the weight while ensuring its own strength. In addition, in order to facilitate the processing and manufacturing of the buffer layer 400, the wall thickness of each part of the buffer body 410a is kept consistent.
[0050] Reference Figures 2 to 6In the first embodiment, the buffer ring 412 includes two first buffer plates 4121 symmetrically arranged with a preset plane as the center, the preset plane is a plane where the first preset direction and the third preset direction are located, and the first preset direction and the second preset direction are at an angle to each other with the third preset direction; the two first buffer plates 4121 in the buffer ring 412 protrude in directions away from each other, so that buffer areas 4171 are formed on the surfaces of the two first buffer plates 4121 in the buffer ring 412 that are close to each other, and the two buffer areas 4171 are connected to form a buffer space 417; the buffer connector 411 includes two buffer connecting plates 4111 symmetrically arranged with the preset plane as the center, and the two buffer connecting plates 4111 in the buffer connector 411 are connected; the two buffer connecting plates 4111 in the buffer connector 411 A buffer connecting plate 4111 in the connecting plate 4111 is connected to a first buffer plate 4121 in the adjacent buffer ring 412 to form a first buffer unit 4181. There are multiple first buffer units 4181, and the multiple first buffer units 4181 are connected in sequence along a third preset direction to form a first buffer component 418; another buffer connecting plate 4111 is connected to another first buffer plate 4121 in the adjacent buffer ring 412 to form a second buffer unit 4191. There are multiple second buffer units 4191, and the multiple second buffer units 4191 are connected in sequence along the third preset direction to form a second buffer component 419. The first buffer component 418 and the second buffer component 419 are symmetrically arranged with the preset plane as the center, and form a buffer body 410a.
[0051] In this embodiment, the first buffer plate 4121 in the buffer ring 412 in one of the two adjacent buffer bodies 410a is arranged in one-to-one correspondence with the first buffer plate 4121 in the buffer ring 412 in the other buffer body 410a, and the fixed connection is achieved by overall gluing, interval gluing or laser welding. The first buffer plate 4121 is a polygonal plate, such as a trapezoidal plate or a triangular plate. Correspondingly, the cross-sectional shape of the buffer area 4171 is a trapezoid or a triangle. The buffer ring 412 includes two first buffer plates 4121, which reduces the manufacturing difficulty of the buffer ring 412. The buffer connection plate 4111 in the buffer connection member 411 in one of the two adjacent buffer bodies 410a is arranged in one-to-one correspondence with the buffer connection plate 4111 in the buffer connection member 411 in the other buffer body 410a. The buffer connection member 411 includes two buffer connection plates 4111, which reduces the manufacturing difficulty of the buffer connection member 411. In addition, the first buffer member 418 composed of a plurality of first buffer units 4181 and the second buffer member 419 composed of a plurality of second buffer units 4191 are both made by stamping a long strip. By adopting the first buffer member 418 and the second buffer member 419 symmetrically arranged around a preset plane to produce the buffer layer 400, the manufacturing difficulty of the buffer layer 400 is greatly reduced.
[0052] Reference Figures 2 to 6 In the first embodiment, the second preset direction is perpendicular to the first preset direction, and the first preset direction and the second preset direction are both perpendicular to the third preset direction; the two buffer connecting plates 4111 in the buffer connecting member 411 are fitted together; the first buffer plate 4121 is a bent plate, and the first buffer plate 4121 in the buffer ring 412 in one buffer body 410a of two adjacent buffer bodies 410a is fitted together with the first buffer plate 4121 in the buffer ring 412 in the other buffer body 410a.
[0053] In this embodiment, the second preset direction is perpendicular to the first preset direction, and the first preset direction and the second preset direction are both perpendicular to the third preset direction. This design reduces the manufacturing difficulty of the buffer layer 400. The design of the two buffer connection plates 4111 in the buffer connection member 411 is connected in a close fit to strengthen the connection strength of the two buffer connection plates 4111. The first buffer plate 4121 is a trapezoidal plate, the cross-sectional shape of the buffer ring 412 is a regular hexagon, the cross-sectional shape of the buffer area 4171 on the first buffer plate 4121 is a trapezoid, the cross-sectional shape of the buffer space 417 composed of two opposite buffer areas 4171 is a regular hexagon, and the cross-sectional shape of the buffer gap 4112 is a regular hexagon. In other embodiments, the cross-sectional shape of the buffer ring 412 may also be a polygon other than a regular hexagon, the cross-sectional shape of the buffer area 4171 on the first buffer plate 4121 may be a polygon other than a trapezoid, the cross-sectional shape of the buffer space 417 composed of two opposite buffer areas 4171 may be a polygon other than a regular hexagon, and the cross-sectional shape of the buffer gap 4112 may be a polygon other than a regular hexagon; the above-mentioned design enables the buffer body 410a to effectively absorb energy and buffer when it is impacted by external force. The design in which the first buffer plate 4121 in the buffer ring 412 in one buffer body 410a of two adjacent buffer bodies 410a is fitted and connected with the first buffer plate 4121 in the buffer ring 412 in the other buffer body 410a strengthens the connection strength between the two adjacent buffer bodies 410a, thereby strengthening the overall strength of the buffer layer 400.
[0054] Reference Figures 7 to 13 In one embodiment, the buffer layer 400 includes a plurality of buffer corrugated boards 410b sequentially connected along a first preset direction, and the buffer corrugated boards 410b have a buffer space 417 for buffering deformation of the buffer corrugated boards 410b.
[0055] In this embodiment, two adjacent buffer corrugated plates 410b are fixedly connected, and the plurality of buffer corrugated plates 410b are arranged to form the buffer layer 400 into a corrugated structure capable of absorbing energy and buffering. In addition, to facilitate the manufacture of the buffer layer 400, the wall thickness of each part of the buffer corrugated plate 410b is kept consistent.
[0056] Reference Figures 7 to 9In the second embodiment, the number of the buffer corrugated plates 410b is two, and the buffer corrugated plates 410b include a plurality of first connecting plates 413 and a plurality of second buffer plates 414. Two adjacent second buffer plates 414 in the buffer corrugated plates 410b are connected by the first connecting plates 413; the first connecting plate 413 in one of the two buffer corrugated plates 410b is fitted and connected with the first connecting plate 413 in the other buffer corrugated plates 410b, and the second buffer plate 414 in the buffer corrugated plates 410b is a bent plate, and the second buffer plate 414 protrudes in a direction away from the first connecting plate 413, so that the second buffer plate 414 forms a buffer space 417 for the second buffer plate 414 to buffer deformation.
[0057] In this embodiment, the first connecting plate 413 and the second buffer plate 414 in the buffer corrugated plate 410b are arranged in a first connecting plate 413, a second buffer plate 414, a first connecting plate 413, a second buffer plate 414..., wherein the first connecting plate 413 is fixedly connected to two adjacent second buffer plates 414. To facilitate the processing and manufacturing of the buffer corrugated plate 410b, the buffer corrugated plate 410b is an integral stamping part; the first connecting plate 413 in one of the two buffer corrugated plates 410b is arranged in a one-to-one correspondence with the first connecting plate 413 in the other buffer corrugated plate 410b, and the first connecting plate 413 in one of the two buffer corrugated plates 410b is arranged in a one-to-one correspondence with the first connecting plate 413 in the other buffer corrugated plate 410b. The design of the connecting plate 413 being fitted and connected to the first connecting plate 413 in another buffer corrugated plate 410b strengthens the connection strength of the two buffer corrugated plates 410b; the second buffer plate 414 in one buffer corrugated plate 410b of the two buffer corrugated plates 410b is arranged one-to-one with the second buffer plate 414 in the other buffer corrugated plate 410b, and the second buffer plate 414 is a trapezoidal plate, and the cross-sectional shape of the second buffer plate 414 is an isosceles trapezoid, and the cross-sectional shape of the buffer space 417 is also an isosceles trapezoid. In other embodiments, the cross-sectional shape of the second buffer plate 414 may be other shapes besides the isosceles trapezoid, and the cross-sectional shape of the buffer space 417 may be other shapes besides the isosceles trapezoid. The two buffer corrugated plates 410b together form a corrugated structure that has a mutual reinforcement effect with the energy absorbing layer 200, so that the buffer layer 400 can not only flexibly adjust its overall strength and adaptability by changing the material, thickness, shape or number of the buffer corrugated plates 410b, but also reduce the difficulty and cost of the assembly process, and of course reduce the weight while ensuring its own strength.
[0058] Reference Figures 9 to 13In the third embodiment, the buffer corrugated board 410b includes a plurality of second connecting plates 415 and a plurality of third buffer plates 416, and two adjacent third buffer plates 416 in the buffer corrugated board 410b are connected by the second connecting plate 415; the third buffer plate 416 in the buffer corrugated board 410b protrudes in a direction away from the second connecting plate 415, so that the third buffer plate 416 forms a buffer space 417 for buffering deformation of the third buffer plate 416; a flat sheet 600 is clamped and fixed between two adjacent buffer corrugated boards 410b.
[0059] In this embodiment, the second connecting plate 415 and the third buffer plate 416 in the buffer corrugated plate 410b are arranged in the manner of the second connecting plate 415, the third buffer plate 416, the second connecting plate 415, the third buffer plate 416, ..., wherein the second connecting plate 415 is fixedly connected to two adjacent third buffer plates 416, and the buffer corrugated plate 410b is a one-piece stamping part for the convenience of processing and manufacturing the buffer corrugated plate 410b. The third buffer plate 416 is a polygonal plate, such as a trapezoidal plate or a triangular plate, and the cross-sectional shape of the buffer space 417 is a trapezoid or a triangle. The flat sheet 600 is made of PP glass fiber (full name: glass fiber reinforced polypropylene resin) or metal foil, and the flat sheet 600 is clamped and fixed between two adjacent buffer corrugated plates 410b by gluing; the flat sheet 600 not only enables the two adjacent buffer corrugated plates 410b to be connected, but also strengthens the connection strength between the two adjacent buffer corrugated plates 410b, thereby strengthening the overall strength of the buffer layer 400.
[0060] In another embodiment, the number of buffer corrugated boards 410b is two, and the number of flat sheets 600 is two, wherein the third buffer sheet 416 in one buffer corrugated board 410b of two adjacent buffer corrugated boards 410b and the third buffer sheet 416 in the other buffer corrugated board 410b protrude in directions away from each other, one layer of flat sheet 600 is clamped and fixed between the two buffer corrugated boards 410b, and another layer of flat sheet is fixedly attached to the surface of one buffer corrugated board 410b away from the other buffer corrugated board 410b and covers the corresponding buffer space 417; in yet another embodiment, the number of buffer corrugated boards 410b is one, and the number of flat sheet 600 is also one, and the flat sheet 600 is fixedly attached to the surface of the buffer corrugated board 410b and covers the corresponding buffer space 417.
[0061] Reference Figures 9 to 13 In the third embodiment, the second connecting plate 415 in one of two adjacent buffer corrugated plates 410b is fitted and connected to the flat sheet 600, and the second connecting plate 415 or the third buffer plate 416 in the other buffer corrugated plate 410b is fitted and connected to the flat sheet 600.
[0062] In this embodiment, the third buffer plate 416 in one of two adjacent buffer corrugated plates 410b and the third buffer plate 416 in the other buffer corrugated plate 410b protrude in a direction toward or away from each other, so that the buffer space 417 in one buffer corrugated plate 410b is opposite to or opposite to the buffer space 417 in the other buffer corrugated plate 410b; the design in which one of the two adjacent buffer corrugated plates 410b is fitted and connected to the flat sheet 600 and the other buffer corrugated plate 410b is also fitted and connected to the flat sheet 600 strengthens the connection strength between the flat sheet 600 and the two adjacent buffer corrugated plates 410b, thereby strengthening the self-strength of the buffer layer 400.
[0063] Reference Figure 3 , Figure 4 , Figure 8 , Fig. 9 , Fig.11 as well as Fig.13 In one embodiment, the buffer space 417 is filled with a filler. In this embodiment, the filler may be an object such as a non-Newtonian fluid that can produce elastic deformation to improve the impact resistance of the buffer layer 400, or an object such as a foamed polyurethane that can enhance the sound insulation performance of the buffer layer 400, or an object that can enhance the heat insulation performance of the buffer layer 400.
[0064] Reference Figures 1 to 13 According to another aspect of the present application, an embodiment of the present application further provides a battery device, the battery device includes a battery pack and the above-mentioned protective structure, the battery pack has an exposed surface, and the second protective outer layer 500 is installed and covered on the exposed surface of the battery pack.
[0065] In the embodiment of the present application, a battery pack refers to a device that combines multiple battery cells together to form a whole. Its specific structure is common knowledge to those skilled in the art and will not be elaborated in detail here. The protective structure is fixed to the exposed surface of the battery pack as a whole by rivets to play a protective role. Of course, in other embodiments, the protective structure can also be installed on the exposed surface of the battery pack by other detachable installation methods, such as screws.
[0066] In summary, the protection structure and battery equipment provided by the present embodiment have at least the following beneficial technical effects: the protection structure of the present application avoids electrochemical corrosion of the energy absorption layer 200 and the buffer layer 400, both of which are metal parts, due to direct contact under the isolation effect of the isolation layer 300, thereby avoiding damage to the entire protection structure due to electrochemical corrosion of the energy absorption layer 200 and the buffer layer 400, thereby ensuring the overall mechanical strength of the entire protection structure.
[0067] The above are only preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.
Claims
1. A protective structure, characterized in that: The protective structure comprises a first protective outer layer (100), an energy absorbing layer (200), an isolation layer (300), a buffer layer (400), and a second protective outer layer (500) which are sequentially stacked along a first preset direction; the energy absorbing layer (200) and the buffer layer (400) are both made of metal; and the isolation layer (300) is used to isolate the energy absorbing layer (200) from the buffer layer (400).
2. The protective structure according to claim 1, characterized in that: The buffer layer (400) comprises a plurality of buffer bodies (410a) connected in sequence along a second preset direction, wherein the second preset direction and the first preset direction form an angle with each other; The buffer body (410a) comprises a plurality of buffer connecting pieces (411) and a plurality of buffer annular pieces (412); two adjacent buffer annular pieces (412) in the buffer body (410a) are connected via the buffer connecting pieces (411); and a buffer space (417) is provided on the buffer annular piece (412) for buffering deformation of the buffer annular piece (412); The buffer ring (412) in one of the two adjacent buffer bodies (410a) is connected to the buffer ring (412) in the other buffer body (410a), and a buffer gap (4112) is provided between the buffer connecting piece (411) in one of the two adjacent buffer bodies (410a) and the buffer connecting piece (411) in the other buffer body (410a) for buffering deformation of the buffer connecting piece (411).
3. The protective structure according to claim 2, characterized in that: The buffer ring (412) comprises two first buffer plates (4121) symmetrically arranged with a preset plane as the center, the preset plane being the plane where the first preset direction and the third preset direction are located, and the first preset direction and the second preset direction both form an angle with the third preset direction; The two first buffer plates (4121) in the buffer ring (412) protrude in directions away from each other, so that a buffer area (4171) is formed on the surfaces of the two first buffer plates (4121) in the buffer ring (412) that are close to each other, and the two buffer areas (4171) are connected to form the buffer space (417); The buffer connection member (411) comprises two buffer connection plates (4111) which are symmetrically arranged with the preset plane as the center, and the two buffer connection plates (4111) in the buffer connection member (411) are connected; One of the two buffer connecting plates (4111) in the buffer connecting member (411) is connected to one of the first buffer plates (4121) in the adjacent buffer ring member (412) to form a first buffer unit (4181), and the number of the first buffer units (4181) is multiple, and the multiple first buffer units (4181) are connected in sequence along the third preset direction to form a first buffer component (418); the other buffer connecting plate (4111) is connected to the other of the first buffer plates (4121) in the adjacent buffer ring member (412) to form a second buffer unit (4191), the number of the second buffer units (4191) is multiple, and the multiple second buffer units (4191) are connected in sequence along the third preset direction to form a second buffer component (419), and the first buffer component (418) and the second buffer component (419) are symmetrically arranged with the preset plane as the center to form the buffer body (410a).
4. The protective structure according to claim 3, characterized in that: The second preset direction is perpendicular to the first preset direction, and the first preset direction and the second preset direction are both perpendicular to the third preset direction; The two buffer connecting plates (4111) in the buffer connecting member (411) are fitted and connected; the first buffer plate (4121) is a bent plate, and the first buffer plate (4121) in the buffer ring member (412) in one of the two adjacent buffer bodies (410a) is fitted and connected with the first buffer plate (4121) in the buffer ring member (412) in the other buffer body (410a).
5. The protective structure according to claim 1, characterized in that: The buffer layer (400) comprises a plurality of buffer corrugated boards (410b) connected in sequence along the first preset direction, and the buffer corrugated boards (410b) have a buffer space (417) for buffering deformation of the buffer corrugated boards (410b).
6. The protective structure according to claim 5, characterized in that: The number of the buffer corrugated plates (410b) is two, and the buffer corrugated plates (410b) include a plurality of first connecting plates (413) and a plurality of second buffer plates (414), and two adjacent second buffer plates (414) in the buffer corrugated plates (410b) are connected via the first connecting plates (413); The first connecting plate (413) in one of the two buffer corrugated plates (410b) is fitted and connected with the first connecting plate (413) in the other buffer corrugated plate (410b), and the second buffer plate (414) in the buffer corrugated plate (410b) is a bent plate, and the second buffer plate (414) protrudes in a direction away from the first connecting plate (413), so that the second buffer plate (414) forms a buffer space (417) for buffering deformation of the second buffer plate (414).
7. The protective structure according to claim 5, characterized in that: The buffer corrugated board (410b) comprises a plurality of second connecting boards (415) and a plurality of third buffer boards (416), and two adjacent third buffer boards (416) in the buffer corrugated board (410b) are connected via the second connecting board (415); The third buffer plate (416) in the buffer corrugated plate (410b) protrudes in a direction away from the second connecting plate (415), so that the third buffer plate (416) forms a buffer space (417) for buffering deformation of the third buffer plate (416); a flat sheet (600) is clamped and fixed between two adjacent buffer corrugated plates (410b).
8. The protective structure according to claim 7, characterized in that: The second connecting plate (415) in one of the two adjacent buffer corrugated plates (410b) is fitted and connected to the flat sheet (600), and the second connecting plate (415) or the third buffer plate (416) in the other buffer corrugated plate (410b) is fitted and connected to the flat sheet (600).
9. The protective structure according to any one of claims 2 to 8, characterized in that: The buffer space (417) is filled with a filler.
10. A battery device, characterized in that: The battery device comprises a battery pack and the protective structure according to any one of claims 1 to 9, wherein the battery pack has an exposed surface, and the second protective outer layer (500) is installed and covers the exposed surface of the battery pack.