Electricity using device, battery device, and method for producing the same

Abstract

The application provides a kind of electric device, battery device and its production method, battery device includes box, battery monomer and protective plate, battery monomer is contained in box, protective plate is installed below box, protective plate includes body part, body part includes first fiber resin layer, reinforcing layer and second fiber resin layer are sequentially stacked.The edge part of protective plate is configured as a resin material, the edge part is surrounded by the periphery of the body part, the edge part is connected to the first fiber resin layer on the side away from the reinforcing layer, and covers the end face of the reinforcing layer.The battery device provided by the application can reduce the risk of corrosion of the reinforcing layer under the action of external impurities such as water and oxygen, and is also helpful to simplify the production process of the protective plate, thereby reducing the process difficulty in the production process of the battery device.

Description

Technical Field

[0001] This application relates to the field of battery technology, and more specifically, to an electrical device, a battery device, and a method for manufacturing the same. Background Technology

[0002] Battery devices are widely used in electronic devices such as mobile phones, laptops, electric vehicles, electric cars, electric airplanes, electric ships, electric toy cars, electric toy ships, electric toy airplanes, and power tools, etc.

[0003] In the development of battery device technology, in addition to improving the performance of battery devices, the technological complexity of battery device manufacturing is also a problem that needs to be considered. Therefore, how to reduce the technological complexity of battery device manufacturing is a continuous improvement issue in battery device technology. Summary of the Invention

[0004] This application provides an electrical device, a battery device, and a method for manufacturing the same, which helps to reduce the technological difficulty in the battery device manufacturing process.

[0005] This application is achieved through the following technical solution:

[0006] In a first aspect, the battery device provided in the embodiments of this application includes a housing, a battery cell, and a protective plate. The battery cell is housed within the housing, and the protective plate is installed below the housing. The protective plate includes a body portion, which comprises a first fiber resin layer, a reinforcing layer, and a second fiber resin layer stacked sequentially. The protective plate also includes an edge portion, which is constructed of resin material and surrounds the periphery of the body portion. The edge portion is fused to the side of the first fiber resin layer opposite to the reinforcing layer and covers the end face of the periphery of the reinforcing layer.

[0007] The battery device provided in this application embodiment has an edge portion surrounding the periphery of the main body, and at least a portion of the edge portion is fused to the side of the first fiber resin layer away from the reinforcing layer, covering the peripheral end face of the reinforcing layer. In this way, the edge portion and the first fiber resin layer can be integrally solidified after melting through relatively simple processes such as hot pressing. The first fiber resin layer and the second fiber resin layer provide protection for both sides of the reinforcing layer along the thickness direction, and the edge portion protects the peripheral end face of the reinforcing layer. This reduces the risk of corrosion of the reinforcing layer under the action of external impurities such as water and oxygen, and also simplifies the production process of the protective plate, thereby reducing the process difficulty in the production of the battery device.

[0008] According to some embodiments of this application, the edge portion includes a flange structure, the flange structure is disposed around the periphery of the body portion, the flange structure extends toward the body portion to form a connecting structure, and the connecting structure is fused to the side of the first fiber resin layer opposite to the reinforcing layer.

[0009] In the above scheme, by setting the edge part including a flange structure and a connecting structure, the connecting structure is integrally cured with the first fiber resin layer of the body part. The flange structure can more easily realize the connection between the protective plate and the box body. Moreover, the flange structure is set beyond the periphery of the body part, which helps to improve the coverage effect of the edge part on the end face of the periphery of the reinforcing layer, and further helps to reduce the risk of corrosion of the reinforcing layer.

[0010] According to some embodiments of this application, the first fiber resin layer is located on the side of the reinforcing layer away from the battery cell, and the connecting structure is also fused to the side of the second fiber resin layer away from the reinforcing layer.

[0011] In the above scheme, the connecting structure is integrally cured with the first fiber resin layer and the second fiber resin layer on both sides of the reinforcing layer along the thickness direction. The integral molding of the first fiber resin layer, the connecting structure and the second fiber resin layer has a better covering effect on the end face of the periphery of the reinforcing layer, reducing the risk that external water, oxygen, etc. will come into contact with the reinforcing layer and corrode the reinforcing layer through the pores between the first fiber resin layer and the reinforcing layer or the pores between the second fiber resin layer and the reinforcing layer.

[0012] According to some embodiments of this application, the edge portion further includes a transition structure, which connects the flange structure and the connecting structure. The flange structure is located on the side of the upper surface of the body portion facing the battery cell.

[0013] In the above scheme, by setting the edge part to include a transition structure and setting the flange structure on the side of the upper surface of the main body facing the battery cell, it is beneficial to reduce the risk of the flange structure and the box connecting parts such as bolts extending beyond the bottom of the main body and being worn during use. It is also beneficial to make full use of the gap between the protective plate and the box to set up structural components such as water cooling plates, which is beneficial to improve the protective plate to provide protection for more structural components.

[0014] According to some embodiments of this application, the flange structure has a reinforcing rib protruding from the side opposite to the battery cell.

[0015] In the above scheme, the reinforcing ribs can be set to any required shape. The reinforcing ribs can improve the structural strength and rigidity of the flange structure, thereby reducing the risk of cracking or deformation of the flange structure.

[0016] According to some embodiments of this application, the first fiber resin layer includes a first fiber material, the second fiber resin layer includes a second fiber material, and the edge portion includes a third fiber material. The fiber lengths of the first fiber material and the second fiber material are both greater than the fiber length of the third fiber material.

[0017] In the above scheme, by setting the lengths of both the first and second fiber materials to be greater than the length of the third fiber material, it is beneficial to improve the structural strength and bending strength of the first and second fiber resin layers, while also increasing the flexibility in setting the thickness of the edge portion to reinforce certain areas. This, in turn, improves the overall structural strength of the protective panel.

[0018] According to some embodiments of this application, the first fiber material and the second fiber material are continuous fibers, and the third fiber material is a discontinuous fiber.

[0019] In the above scheme, the first and second fiber materials are continuous fibers, while the third fiber material is a discontinuous fiber. This is beneficial to improving the structural strength of the first and second fiber resin layers and to increasing the flexibility of thickness settings in different areas of the edge. In this way, it is beneficial to improve the overall structural strength of the protective plate.

[0020] According to some embodiments of this application, the length L of the third fiber satisfies: L≤2cm.

[0021] In the above scheme, by setting the length L of the third fiber to satisfy: L≤2cm, it is beneficial to improve the structural strength of the edge. In addition, during the hot pressing process of the edge, it is beneficial to improve the fluidity of the third fiber with the resin material, which makes it easier to flexibly set the thickness of different areas of the edge to strengthen the local area of ​​the edge, thereby improving the structural strength of the edge.

[0022] According to some embodiments of this application, along the thickness direction of the protective plate, the area of ​​the orthographic projection of all battery cells in the battery device on the first fiber resin layer is S, and the area of ​​the reinforcing layer on the orthographic projection of the first fiber resin layer is S1, where 80% ≤ S1 / S ≤ 1.

[0023] In the above scheme, the reinforcing layer covers at least 80% of the battery cells inside the box, providing protection for at least 80% of the battery cells inside the box, reducing the risk of external obstacles piercing the protective plate and penetrating the battery cells, and helping to reduce the risk of battery cells deforming under external impact, vibration and other loads.

[0024] According to some embodiments of this application, the thickness of the position where the connecting structure connects to the main body is a, where 0.2mm≤a≤1.5mm.

[0025] In the above scheme, by setting 0.2mm≤a≤1.5mm, it is beneficial to improve the structural strength of the protective plate and the energy density of the battery device.

[0026] Secondly, the battery device manufacturing method provided in this application includes: laying a first fiber resin layer, a reinforcing layer, a second fiber resin layer, and an edge blank in a protective plate forming mold, wherein the reinforcing layer is disposed between the first fiber resin layer and the second fiber resin layer, and the edge blank surrounds the periphery of the reinforcing layer, the edge blank is constructed of resin material, and the edge blank overlaps the side of the first fiber resin layer away from the reinforcing layer; performing a hot pressing process on the first fiber resin layer, the reinforcing layer, the second fiber resin layer, and the edge blank, wherein the reinforcing layer is connected to the second fiber resin layer and the second fiber resin layer respectively to form a body part, and the edge blank is fused to the first fiber resin layer and covers the end face of the periphery of the reinforcing layer.

[0027] The battery device manufacturing method provided in this application embodiment can produce the battery device provided in the first aspect embodiment of this application. It is beneficial to reduce the risk of external impurities such as water and oxygen entering the interior of the protective plate and corroding the reinforcing layer, while also simplifying the manufacturing process of the protective plate and the battery device.

[0028] According to some embodiments of this application, laying a first fiber resin layer, a reinforcing layer, a second fiber resin layer and an edge blank in a protective plate forming module further includes: laying an adhesive film layer in a protective plate forming mold, the adhesive film layer being disposed between the first fiber resin layer and the reinforcing layer, and / or, the adhesive film layer being disposed between the second fiber resin layer and the reinforcing layer.

[0029] In the above scheme, it is beneficial to improve the bonding strength between the first fiber resin layer and the reinforcing layer, or between the second fiber resin layer and the reinforcing layer.

[0030] According to some embodiments of this application, the edge blank also includes a third fiber material, which is pre-impregnated with a resin material.

[0031] In the above scheme, the edge portion formed after the hot pressing process includes resin material and third fiber material. The third fiber material has a strengthening effect on the structural strength of the edge portion, which is beneficial to improving the structural strength of the edge portion, and thus beneficial to improving the overall structural strength of the protective plate.

[0032] According to some embodiments of this application, the third fiber is a discontinuous fiber, and the length L of the third fiber satisfies: L≤2cm.

[0033] In the above scheme, during the hot pressing process of the edge blank, the third fiber can flow together with the resin material, which makes it easy to flexibly set different thicknesses in different areas of the edge as needed. This helps to further improve the structural strength of the protective plate and reduce the risk of edge cracking or deformation of the protective plate.

[0034] According to some embodiments of this application, the area corresponding to the molding die and the edge blank has a reinforcing groove. The hot pressing process of the first fiber resin layer, the reinforcing layer, the second fiber resin layer and the edge blank further includes: a third fiber material flowing into the reinforcing groove along with the resin material and curing in the reinforcing groove to form a reinforcing rib. The reinforcing rib is integrally formed with the edge portion and protrudes relative to the edge portion.

[0035] In the above scheme, during the edge forming process, the fluidity of the third fiber and resin material is used to integrally form the reinforcing rib and the edge, which further simplifies the reinforcing rib forming process and strengthens the edge structure to improve the edge structural strength.

[0036] According to some embodiments of this application, before laying the first fiber resin layer, the reinforcing layer, the second fiber resin layer and the edge blank in the protective plate molding die, the battery device manufacturing method further includes: sequentially laying the first fiber resin layer, the adhesive film layer, the reinforcing layer, the adhesive film layer and the second fiber resin layer; hot-pressing the first fiber resin layer, the adhesive film layer, the reinforcing layer and the second fiber resin layer together, wherein the two sides of the reinforcing layer are respectively fused and connected to the first fiber resin layer and the second fiber resin layer to form the body portion.

[0037] In the above scheme, by setting the main body separately and pre-forming it, it is easier to mass-produce the main body, which further simplifies the production process of the battery device.

[0038] Secondly, the power-consuming device provided in the embodiments of this application includes the battery device provided in any of the above embodiments, or the battery device manufactured using the battery device manufacturing method that has been passed in any of the above embodiments, and the battery device 10 is used to provide electrical energy.

[0039] The electrical device provided in this application has the same technical effect because it uses the battery device provided in any of the above embodiments, or the battery device produced by the production method of the battery device provided in any of the above embodiments, and will not be described again here.

[0040] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0041] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0042] Figure 1 This is a schematic diagram of the vehicle structure provided in an embodiment of this application;

[0043] Figure 2 This is a schematic diagram of the structure of the battery device provided in the embodiments of this application;

[0044] Figure 3 This is a schematic diagram of the structure of the protective plate in the battery device provided in the embodiments of this application;

[0045] Figure 4 This is a front view of the protective plate in the battery device provided in an embodiment of this application;

[0046] Figure 5 for Figure 4 Schematic diagram of the cross-sectional structure along AA;

[0047] Figure 6 for Figure 5 A magnified view of a section at point B in the middle;

[0048] Figure 7 A flowchart illustrating a method for manufacturing a battery device, as provided in this application embodiment;

[0049] Figure 8 A flowchart illustrating another method for manufacturing a battery device provided in this application embodiment.

[0050] The accompanying drawings are not necessarily drawn to scale.

[0051] Explanation of reference numerals in the attached figures:

[0052] 1-Vehicle; 1a-Motor; 1b-Controller;

[0053] 10-Battery unit; 11-Box;

[0054] 20-Protective plate; 21-Main body; 211-First fiber resin layer; 212-Second fiber resin layer; 213-Reinforcing layer; 22-Edge part; 221-Flange structure; 222-Connecting structure; 223-Transition structure; 23-Reinforcing rib;

[0055] 30-cell battery. Detailed Implementation

[0056] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0057] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used in the description of this application is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms "comprising" and "having," and any variations thereof, in the description, claims, and accompanying drawings of this application are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the description, claims, or accompanying drawings of this application are used to distinguish different objects, not to describe a specific order or hierarchy.

[0058] In this application, the reference to "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a mutually exclusive, independent, or alternative embodiment. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described in this application can be combined with other embodiments.

[0059] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "attachment" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0060] In this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, in this application, the character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0061] In this application, "multiple" refers to two or more (including two), and similarly, "multiple groups" refers to two or more (including two), and "multiple pieces" refers to two or more (including two).

[0062] The battery apparatus mentioned in the embodiments of this application may include one or more battery cell assemblies for providing voltage and capacity. A battery cell assembly may include multiple battery cells connected in series, parallel, or mixed connections via a busbar.

[0063] In some embodiments, a battery cell assembly is typically formed by arranging multiple battery cells; as an example, a battery cell assembly can be a battery module, which is formed by arranging and fixing multiple battery cells together to form a single module. As an example, a battery module can be formed by bundling multiple battery cells together with cable ties.

[0064] In some embodiments, the battery device may be a battery pack, which includes a housing and one or more individual battery cells housed within the housing.

[0065] As an example, the battery cell assembly can be a battery module, which can be housed in a housing by fixing the battery module in the housing.

[0066] As an example, battery cell assemblies can also be housed in a housing by directly fixing multiple battery cells to the housing.

[0067] In some embodiments, the housing may be part of the vehicle's chassis structure. For example, a portion of the housing may be at least a part of the vehicle's floor, or a portion of the housing may be at least a part of the vehicle's crossbeams and longitudinal beams.

[0068] In some embodiments, the battery device may be an energy storage device. Energy storage devices include energy storage containers, energy storage cabinets, etc.

[0069] Battery devices typically include a housing and a protective plate. The housing houses the individual battery cells and related components such as the battery management system, while the protective plate is connected to the bottom of the housing to protect the individual battery cells and related components inside the housing. This reduces the risk of external impurities entering the housing and corroding the individual battery cells and related components, and also reduces the risk of external impacts or vibrations being transmitted to the individual battery cells and causing damage.

[0070] In related technologies, in order to reduce the risk of corrosion of the protective plate under the action of external impurities such as water and oxygen, it is usually necessary to coat the surface of the reinforcing layer with a fiber resin layer. However, in order to improve the coating effect of the fiber resin layer on the end face of the reinforcing layer, a complex processing technology is required, which makes the production process of the battery device more complicated.

[0071] In view of this, the battery device provided in this application embodiment includes a housing, a battery cell, and a protective plate. The battery cell is housed in the housing, and the protective plate is installed below the housing. The protective plate includes a body portion, which includes a first fiber resin layer, a reinforcing layer, and a second fiber resin layer stacked sequentially. The protective plate also includes an edge portion, which is constructed of resin material and surrounds the periphery of the body portion. The edge portion is fused to the side of the first fiber resin layer opposite to the reinforcing layer and covers the end face of the periphery of the reinforcing layer.

[0072] The battery device provided in this application embodiment has an edge portion surrounding the periphery of the main body, and at least a portion of the edge portion is fused to the side of the first fiber resin layer away from the reinforcing layer, covering the peripheral end face of the reinforcing layer. In this way, the edge portion and the first fiber resin layer can be integrally solidified after melting through relatively simple processes such as hot pressing. The first fiber resin layer and the second fiber resin layer provide protection for both sides of the reinforcing layer along the thickness direction, and the edge portion protects the peripheral end face of the reinforcing layer. This reduces the risk of corrosion of the reinforcing layer under the action of external impurities such as water and oxygen, and also simplifies the production process of the protective plate, thereby reducing the process difficulty in the production of the battery device.

[0073] The technical solutions described in the embodiments of this application are applicable to battery devices, battery device manufacturing methods, and electrical devices using battery devices.

[0074] The battery device disclosed in this application can be used, but is not limited to, in electrical devices such as vehicles, ships, or aircraft. A power system for such an electrical device can be constructed using the battery device disclosed in this application.

[0075] This application provides an electrical device that uses a battery as a power source. The electrical device can be, but is not limited to, mobile phones, tablets, laptops, electric toys, power tools, electric bicycles, electric motorcycles, electric cars, ships, spacecraft, etc. Electric toys can include stationary or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, etc. Spacecraft can include airplanes, rockets, space shuttles, and spacecraft, etc.

[0076] For ease of explanation, the following embodiments will be described using a vehicle 1 as an example of an electrical device according to an embodiment of this application.

[0077] Please refer to Figure 1 , Figure 1This is a schematic diagram of the structure of a vehicle 1 provided in an embodiment of this application. Vehicle 1 can be a gasoline-powered vehicle, a natural gas-powered vehicle, or a new energy vehicle. New energy vehicles can be pure electric vehicles, hybrid electric vehicles, or range-extended electric vehicles, etc. A battery device 10 is installed inside vehicle 1, and the battery device 10 can be located at the bottom, front, or rear of vehicle 1. The battery device 10 can be used to power vehicle 1; for example, the battery device 10 can serve as the operating power source for vehicle 1's electrical system, such as meeting the power requirements for starting, navigation, and operation of vehicle 1.

[0078] The vehicle 1 may also include a controller 1b and a motor 1a. The controller 1b is used to control the battery device 10 to supply power to the motor 1a, for example, for the power needs of the vehicle 1 during starting, navigation and driving.

[0079] In some embodiments of this application, the battery device 10 can not only serve as the operating power source for the vehicle 1, but also as the driving power source for the vehicle 1, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1.

[0080] Please refer to Figure 2 and Figure 3 , Figure 2 This is a schematic diagram of the structure of the battery device 10 provided in the embodiments of this application. Figure 3 This is a schematic diagram of the structure of a battery cell 30 in a battery device 10 provided in an embodiment of this application. The battery device 10 includes a housing 11 and a battery cell 30, with the battery cell 30 housed within the housing 11. The housing 11 provides a space for the battery cell 30 and can have various structures. In some embodiments, the housing 11 may include a first sub-housing 11 and a second sub-housing 11, which overlap each other, jointly defining a space for accommodating the battery cell 30. The second sub-housing 11 may be a hollow structure with one open end, while the first sub-housing 11 may be a plate-like structure, with the first sub-housing 11 covering the open side of the second sub-housing 11, so that the first and second sub-housing 11 jointly define the space. Alternatively, both the first and second sub-housing 11 may be hollow structures with one open side, with the open side of the first sub-housing 11 covering the open side of the second sub-housing 11.

[0081] In the battery device 10, there can be multiple battery cells 30, which can be connected in series, parallel, or in a mixed configuration. A mixed configuration means that multiple battery cells 30 are connected in both series and parallel connections. Multiple battery cells 30 can be directly connected in series, parallel, or in a mixed configuration, and then the entire assembly of the multiple battery cells 30 is housed within the housing 11. Alternatively, the battery device 10 can also consist of multiple battery cells 30 first connected in series, parallel, or in a mixed configuration to form a battery cell assembly, and then these battery cell assemblies are connected in series, parallel, or in a mixed configuration to form a whole, which is then housed within the housing 11. The battery device 10 may also include other structures; for example, it may include a busbar component for electrical connection between the multiple battery cells 30.

[0082] Among them, the battery cell 30 can be a secondary battery or a primary battery; the battery cell 30 can also be a lithium-sulfur battery, a sodium-ion battery or a magnesium-ion battery, but is not limited to these.

[0083] Firstly, such as Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, the battery device 10 provided in this embodiment includes a housing 11, a battery cell 30, and a protective plate 20. The battery cell 30 is housed within the housing 11, and the protective plate 20 is installed below the housing 11. The protective plate 20 includes a body portion 21, which includes a first fiber resin layer 211, a reinforcing layer 213, and a second fiber resin layer 212 stacked sequentially. The protective plate 20 also includes an edge portion 22, which is constructed of resin material. The edge portion 22 surrounds the periphery of the body portion 21 and is fused to the side of the first fiber resin layer 211 opposite to the reinforcing layer 213, and covers the end face of the periphery of the reinforcing layer 213.

[0084] During the use of the battery device 10, such as when it is applied in a vehicle 1, obstacles such as stones on the road surface may cause some scratches or impact vibrations to the bottom of the battery device 10 while the vehicle 1 is in motion. By installing a protective plate 20 under the housing 11, the protective plate 20 can withstand certain loads such as scratches and impact vibrations for the battery device 10, thereby reducing the vibration or impact of obstacles on the battery cells 30 inside the housing 11 and reducing the risk of sharp objects puncturing the battery cells 30 inside the housing 11.

[0085] The protective plate 20 includes a body portion 21, which comprises a first fiber resin layer 211, a reinforcing layer 213, and a second fiber resin layer 212 stacked sequentially. The reinforcing layer 213 is sandwiched between the first fiber resin layer 211 and the second fiber resin layer 212. Optionally, the reinforcing layer 213 can be a metal plate such as a steel plate to give the body portion 21 higher structural strength. The first fiber resin layer 211 and the second fiber resin layer 212 can be flush with the edges of the reinforcing layer 213 and provide a certain degree of protection for both sides of the reinforcing layer 213 along the thickness direction, thereby reducing the risk of external impurities such as water and oxygen contacting the reinforcing layer 213 along the thickness direction and causing corrosion.

[0086] The resin and fiber contents in the first fiber resin layer 211 and the second fiber resin layer 212 may be the same or different, and the thickness and other parameters of the first fiber resin layer 211 and the second fiber resin layer 212 may be the same or different. The specific selection can be made according to the needs.

[0087] The protective plate 20 includes an edge portion 22, which is constructed of resin material. At least a portion of the edge portion 22 is fused to the side of the first fiber resin layer 211 away from the reinforcing layer 213. During the production process of the protective plate 20, the first fiber resin layer 211, the reinforcing layer 213, and the second fiber resin layer 212 can be laid sequentially, and the resin material of the edge portion 22 can be laid around the periphery. The edge portion 22 and a portion of the periphery of the first fiber resin layer 211 are arranged to overlap each other. Then, through processes such as hot pressing and lamination, the resin material in the edge portion 22 and the resin material in the first fiber resin layer 211 are melted and flow and mix with each other. During the cooling process, the molten resin material in the edge portion 22 and the resin in the first fiber resin layer 211 are integrally cured and connected to each other, which is the fusion connection between the edge portion 22 and the first fiber resin layer 211.

[0088] Furthermore, the resin material in the edge portion 22 is fluid in the molten state, contacts the end face of the reinforcing layer 213, and is solidified on the end face of the reinforcing layer 213. A portion of the solidified edge portion 22 is integrally fused and connected with the first fiber resin layer 211, and another portion covers the end face of the reinforcing layer 213.

[0089] In this way, by simply laying out the raw materials and going through the hot pressing process, the first fiber resin layer 211, the second fiber resin layer 212 and the edge portion 22 can together provide a good coating effect on the outer surface of the reinforcing layer 213. This reduces the risk of the reinforcing layer 213 being corroded and also simplifies the production process of the protective plate 20.

[0090] Optionally, the first fiber resin layer 211 may be located on the side of the reinforcing layer 213 closer to the battery cell 30, while the second fiber resin layer 212 may be located on the side of the reinforcing layer 213 away from the battery cell 30; alternatively, the second fiber resin layer 212 may be located on the side of the reinforcing layer 213 closer to the battery cell 30, while the first fiber resin layer 211 may be located on the side of the reinforcing layer 213 away from the battery cell 30. Correspondingly, the edge portion 22 may be connected to the surface of the body portion 21 facing the battery cell 30, or the edge portion 22 may be connected to the surface of the body portion 21 away from the battery cell 30.

[0091] The first fiber resin layer 211 and the second fiber resin layer 212 can be formed by impregnating the fiber material with resin material and curing it integrally with the fiber material. The fibers in the first fiber resin layer 211 and the second fiber resin layer 212 can extend along one or more intersecting directions.

[0092] The battery device 10 provided in this application embodiment has an edge portion 22 surrounding the periphery of the body portion 21. At least a portion of the edge portion 22 is fused to the side of the first fiber resin layer 211 away from the reinforcing layer 213 and covers the peripheral end face of the reinforcing layer 213. In this way, the edge portion 22 and the first fiber resin layer 211 can be integrally solidified after melting through a relatively simple process such as hot pressing. The first fiber resin layer 211 and the second fiber resin layer 212 provide protection for both sides of the reinforcing layer 213 along the thickness direction. The edge portion 22 protects the peripheral end face of the reinforcing layer 213. This reduces the risk of corrosion of the reinforcing layer 213 under the action of external impurities such as water and oxygen, and also simplifies the production process of the protective plate 20, thereby reducing the process difficulty in the production process of the battery device 10.

[0093] In some embodiments, such as Figure 5 and Figure 6 As shown, the edge portion 22 includes a flange structure 221, which is arranged around the periphery of the body portion 21. The flange structure 221 extends toward the body portion 21 to form a connecting structure 222, which is fused to the side of the first fiber resin layer 211 opposite to the reinforcing layer 213.

[0094] Specifically, during the molding process, the flange structure 221 and the connecting structure 222 can be integrally cured by the molten resin material during cooling. The portion of the resin material overlapping with the first fiber resin layer 211 is integrally cured with the first fiber resin layer 211 to form the connecting structure 222, while the portion extending beyond the periphery of the body portion 21 is cured to form the flange structure 221. In this way, the edge portion 22 has a better coverage effect on the end face of the periphery of the reinforcing layer 213.

[0095] The protective plate 20 can be connected to the box body 11 by bolts or other structures through the flange structure 221. The connecting structure 222 extends toward the body part 21 relative to the flange structure 221. Optionally, the connecting structure 222 and the flange structure 221 are integrally formed into a flat plate. Alternatively, the flange structure 221 can be bent relative to the connecting structure 222 so that the flange structure 221 and the connecting structure 222 are parallel and spaced apart.

[0096] By setting the edge portion 22 to include a flange structure 221 and a connecting structure 222, the connecting structure 222 is integrally cured with the first fiber resin layer 211 of the body portion 21. The flange structure 221 can more easily connect the protective plate 20 to the box 11. The flange structure 221 is set beyond the periphery of the body portion 21, which helps to improve the coverage effect of the edge portion 22 on the end face of the periphery of the reinforcing layer 213, and further helps to reduce the risk of corrosion of the reinforcing layer 213.

[0097] In some embodiments, such as Figure 5 and Figure 6 As shown, the first fiber resin layer 211 is located on the side of the reinforcing layer 213 away from the battery cell 30, and the connecting structure 222 is also fused to the side of the second fiber resin layer 212 away from the reinforcing layer 213.

[0098] The first fiber resin layer 211 is located on the side of the reinforcing layer 213 away from the battery cell 30. Since the protective plate 20 is located below the housing 11, after the battery device 10 is mounted on the vehicle 1, the protective plate 20 is located at the part of the housing 11 closest to the ground, and the first fiber resin layer 211 of the protective plate 20 can provide bottom protection for the battery device 10.

[0099] The connecting structure 222 is also fused to the side of the second fiber resin layer 212 away from the reinforcing layer 213. In the hot pressing process, the numerical material in the connecting structure 222 overlaps with the first fiber resin layer 211 and the second fiber resin layer 212 and is integrally cured. The connecting structure 222 thus formed is integrally cured with the first fiber resin layer 211 and the second fiber resin layer 212 on both sides of the reinforcing layer 213 along the thickness direction. The integral molding of the first fiber resin layer 211, the connecting structure 222 and the second fiber resin layer 212 provides better coverage of the end face of the reinforcing layer 213, reducing the risk of external water, oxygen, etc. contacting and corroding the reinforcing layer 213 through the pores between the first fiber resin layer 211 and the reinforcing layer or the pores between the second fiber resin layer 212 and the reinforcing layer 213.

[0100] In some embodiments, such as Figure 5 and Figure 6As shown, the edge portion 22 also includes a transition structure 223, which connects the flange structure 221 and the connecting structure 222. The flange structure 221 is located on the side of the upper surface of the body portion 21 facing the battery cell 30.

[0101] In this way, the transition structure 223 is bent relative to the connecting structure 222 toward the side away from the battery cell 30, while the flange structure 221 is bent relative to the transition structure 223, and the flange structure 221 and the connecting structure 222 can be parallel to each other.

[0102] If the flange structure 221 is located on the side of the upper surface of the body portion 21 facing the battery cell 30, then the body portion 21 is recessed relative to the flange structure 221 in a direction away from the battery cell 30, or the flange structure 221 is bent relative to the body portion 21 in a direction closer to the battery cell 30.

[0103] Thus, the lower surface of the flange structure 221 and the lower surface of the body 21 have a certain distance. When the flange structure 221 and the housing 11 are connected by bolts or other structures, this distance can provide a certain clearance space for the bolt head and other connecting structures 222, reducing the risk that the connecting structure 222 may be damaged by scraping against the ground or other structures because it exceeds the surface of the body 21.

[0104] Furthermore, since the body portion 21 is recessed downward relative to the flange structure 221, there is more space between the body portion 21 and the housing 11, so that relevant structural components can be installed using the space between the housing 11 and the body portion 21 of the protective plate 20.

[0105] Therefore, by setting the edge portion 22 to include the transition structure 223 and setting the flange structure 221 to be located on the side of the upper surface of the body portion 21 facing the battery cell 30, it is beneficial to reduce the risk of the connecting parts of the flange structure 221 and the housing 11, such as bolts, extending beyond the bottom of the body portion 21 and being worn during use. It is also beneficial to make full use of the gap between the protective plate 20 and the housing 11 to set up structural components such as water-cooling plates, which is beneficial to improve the protective plate 20 to provide protection for more structural components.

[0106] In some embodiments, such as Figure 4 , Figure 5 and Figure 6 As shown, the flange structure 221 has a reinforcing rib 23 protruding from the side opposite to the battery cell 30.

[0107] The reinforcing rib 23 protrudes from the side of the flange structure 221 away from the battery cell 30, which helps to improve the fit between the flange structure 221 and the housing 11 during the connection process.

[0108] The reinforcing rib 23 can be set to any required shape. The reinforcing rib 23 can improve the structural strength and rigidity of the flange structure 221, thereby reducing the risk of cracking or deformation of the flange structure 221.

[0109] The reinforcing rib 23 can be integrally formed with the flange structure 221 during the forming process. Specifically, in the hot pressing process of the flange structure 221, a reinforcing rib 23 groove corresponding to the position of the reinforcing rib 23 is set in the forming mold. The resin material is cured in the reinforcing rib 23 groove to form the reinforcing rib 23 by utilizing the fluidity of the resin material under heating conditions. In this way, the reinforcing rib 23 is integrally formed with the flange structure 221, which is beneficial to further improve the structural strength of the flange structure 221.

[0110] In some embodiments, the first fiber resin layer 211 includes a first fiber material, the second fiber resin layer 212 includes a second fiber material, and the edge portion 22 includes a third fiber material. The fiber lengths of the first fiber material and the second fiber material are both greater than the fiber length of the third fiber material.

[0111] It is understandable that the longer the fiber length in the first fiber material and the second fiber material, the more beneficial it is to improve the structural strength of the first fiber resin layer 211 or the second fiber resin layer 212, and thus the more beneficial it is to improve the scratch resistance or bending resistance of the first fiber resin layer 211 or the second fiber resin layer 212.

[0112] The shorter the length of the third fiber material in the edge portion 22, the more conducive it is to improving the fluidity of the third fiber material flowing together with the resin material during the molding process of the edge portion 22, and the easier it is to flexibly set the reinforcing ribs 23 and other related structures of the edge portion 22 as needed.

[0113] Therefore, by setting the lengths of both the first and second fiber materials to be greater than the length of the third fiber material, it is beneficial to improve the structural strength and bending strength of the first fiber resin layer 211 and the second fiber resin layer 212, while also increasing the flexibility in setting the thickness of the edge portion 22 to reinforce certain areas of the edge portion 22. This, in turn, improves the overall structural strength of the protective plate 20.

[0114] In some embodiments, the first fiber material and the second fiber material are continuous fibers, and the third fiber material is a discontinuous fiber.

[0115] After continuous fibers are integrally cured with resin materials, they have high structural strength. In contrast, discontinuous fibers have high fluidity during the integral curing process with resin materials, which allows discontinuous fibers to flow more flexibly with the resin, so as to thicken and strengthen local areas of the flange structure 221 as needed.

[0116] Therefore, by setting the first and second fiber materials as continuous fibers and the third fiber material as discontinuous fibers, it is beneficial to improve the structural strength of the first fiber resin layer 211 and the second fiber resin layer 212, and to improve the flexibility of thickness setting in different areas of the edge portion 22. In this way, it is beneficial to improve the overall structural strength of the protective plate 20.

[0117] In some embodiments, the length L of the third fiber satisfies: L≤2cm.

[0118] Optionally, L can be 0.5cm, 0.8cm, 1cm, 1.2cm, 1.5cm, 1.6cm, 1.8cm, or 2cm, etc.

[0119] After systematic analysis and long-term practice, the inventors discovered that by setting the length L of the third fiber to satisfy: L≤2cm, it is beneficial to improve the structural strength of the edge portion 22. Furthermore, during the hot pressing process of the edge portion 22, it is beneficial to improve the fluidity of the third fiber with the resin material, making it easier to flexibly set the thickness of different areas of the edge portion 22 to strengthen the local areas of the edge portion 22, which is beneficial to improving the structural strength of the edge portion 22.

[0120] In some embodiments, along the thickness direction of the protective plate 20, the area of ​​all battery cells 30 in the battery device 10 projected onto the first fiber resin layer 211 is S, and the area of ​​the reinforcing layer 213 projected onto the first fiber resin layer 211 is S1, where 80% ≤ S1 / S ≤ 1.

[0121] The reinforcing layer 213 has high structural strength and puncture resistance. Thus, the reinforcing layer 213 covers at least 80% of the battery cells 30 inside the housing 11, providing protection for at least 80% of the battery cells 30 inside the housing 11, reducing the risk of external obstacles puncturing the protective plate 20 and penetrating the battery cells 30, and helping to reduce the risk of deformation of the battery cells 30 under external impact, vibration and other loads.

[0122] In some embodiments, such as Figure 6 As shown, the thickness of the connection between the connecting structure 222 and the main body 21 is a, where 0.2mm≤a≤1.5mm.

[0123] Optionally, 'a' can be 0.2mm, 0.5mm, 0.6mm, 0.7mm, 0.8mm, 0.9mm, 1mm, 1.2mm, 1.4mm, or 1.5mm, etc.

[0124] It is understandable that a larger value of 'a' to a certain extent is more conducive to improving the connection strength between the edge portion 22 and the body portion 21, and to improving the coverage effect of the edge portion 22 on the end face of the periphery of the reinforcing layer 213. Conversely, a smaller value of 'a' to a certain extent is more conducive to reducing the weight of the protective plate 20, and thus to improving the energy density of the battery device 10.

[0125] After systematic analysis and long-term practice, the inventors discovered that by setting 0.2mm≤a≤1.5mm, it is beneficial to improve the structural strength of the protective plate 20 and also to improve the energy density of the battery device 10.

[0126] Secondly, such as Figure 4 , Figure 5 , Figure 6 and Figure 7 As shown, the method for producing the battery device provided in this application includes:

[0127] S10. Lay out a first fiber resin layer 211, a reinforcing layer 213, a second fiber resin layer 212 and an edge blank in the molding die of the protective plate 20. The reinforcing layer 213 is disposed between the first fiber resin layer 211 and the second fiber resin layer 212. The edge blank surrounds the periphery of the reinforcing layer 213. The edge blank is made of resin material and overlaps the side of the first fiber resin layer 211 away from the reinforcing layer 213.

[0128] S20. A hot pressing process is performed on the first fiber resin layer 211, the reinforcing layer 213, the second fiber resin layer 212 and the edge blank. The reinforcing layer 213 is connected to the second fiber resin layer 212 to form the body part 21. The edge blank is fused to the first fiber resin layer 211 to form the edge part 22. The edge part 22 covers the end face of the periphery of the reinforcing layer 213.

[0129] The mold for forming the protective plate 20 can have a structure and shape that are compatible with the final protective plate 20, so as to form the protective plate 20 with the required shape and structure in the mold for forming the protective plate 20.

[0130] The first fiber resin layer 211 and the second fiber resin layer 212 laid in the molding die of the protective plate 20 can be fiber materials pre-impregnated with resin material. At room temperature, the resin material is solid, but when heated, the resin material gradually melts and has a certain fluidity.

[0131] Optionally, the first fiber resin layer 211 and the second fiber resin layer 212 can be separated from the reinforcing layer 213, and one or more layers of the first fiber resin layer 211 and the second fiber resin layer 212 can be laid as needed.

[0132] Of course, it is also possible to set the first fiber resin layer 211 and the second fiber resin layer 212 to be fused to both sides of the reinforcing layer 213 during the process of step S10, that is, before step S10, the first fiber resin layer 211, the reinforcing layer 213 and the second fiber resin layer 212 have been hot-pressed and composited.

[0133] If the edge blank overlaps the side of the first fiber resin layer 211 away from the reinforcing layer 213, then in step S20, during the hot pressing process of the first fiber resin layer 211 and the edge blank, the edge blank and the numerical material in the first fiber resin layer 211 are melted and then flowed and fused, and the molten resin material is then solidified and molded as a whole, so as to realize the integral molding of the edge blank and the first fiber resin layer 211.

[0134] In step S20, after hot pressing the first fiber resin layer 211, the reinforcing layer 213, the second fiber resin layer 212, and the edge blank, the reinforcing layer 213 is connected to the second fiber resin layer 212 to form the body part 21. Optionally, the connection between the reinforcing layer 213 and the first fiber resin layer 211 and the second fiber resin layer 212 may have been achieved before step S20 through processes such as hot pressing. Alternatively, the connection between the reinforcing layer 213 and the second fiber resin layer 212 may be achieved during the hot pressing process in step S20.

[0135] The fusion connection between the edge blank and the first fiber resin layer 211 is formed in the hot pressing process in step S20. In the hot pressing process, a portion of the numerical material in the edge blank flows to the peripheral end face of the reinforcing layer 213 and is cured on the peripheral end face of the reinforcing layer 213. After the hot pressing process, the edge blank forms an edge portion 22. A portion of the edge portion 22 is integrally fused with the first fiber resin layer 211, while the other portion covers the peripheral end face of the reinforcing layer 213.

[0136] The battery device manufacturing method provided in this application embodiment can produce the battery device 10 provided in the first aspect embodiment of this application. It is beneficial to reduce the risk of external impurities such as water and oxygen entering the interior of the protective plate 20 and corroding the reinforcing layer 213, while also simplifying the manufacturing process of the protective plate 20 and the battery device 10.

[0137] It is understandable that the connection between the first fiber resin layer 211 and the second fiber resin layer 212 and the reinforcing layer 213 can be a direct connection or a connection through a structure such as an adhesive film layer.

[0138] In some embodiments, S10, laying the first fiber resin layer 211, the reinforcing layer 213, the second fiber resin layer 212 and the edge blank in the protective plate 20 molding module, further includes laying an adhesive film layer in the protective plate 20 molding mold, the adhesive film layer being disposed between the first fiber resin layer 211 and the reinforcing layer 213, and / or, the adhesive film layer being disposed between the second fiber resin layer 212 and the reinforcing layer 213.

[0139] Thus, an adhesive film layer is provided between the first fiber resin layer 211 and the reinforcing layer 213, or between the second fiber resin layer 212 and the reinforcing layer 213. In the hot pressing process of step S20, the adhesive film layer melts and connects the first fiber resin layer 211 and the reinforcing layer 213, or connects the second fiber resin layer 212 and the reinforcing layer 213. This is beneficial to improving the bonding strength between the first fiber resin layer 211 and the reinforcing layer 213, or between the second fiber resin layer 212 and the reinforcing layer 213, thereby improving the structural strength of the body part 21 and the protective plate 20.

[0140] In some embodiments, the edge blank further includes a third fiber material, which is pre-impregnated with a resin material.

[0141] Thus, the edge portion 22 formed after the hot pressing process includes resin material and third fiber material. The third fiber material strengthens the structural strength of the edge portion 22, which is beneficial to improving the structural strength of the edge portion 22, and thus to improving the overall structural strength of the protective plate 20.

[0142] In some embodiments, the third fiber is a discontinuous fiber, and the length L of the third fiber satisfies: L≤2cm.

[0143] Thus, the third fiber is relatively short. During the hot pressing of the edge blank in step S20, the third fiber can flow together with the resin material, which makes it easy to flexibly set different thicknesses in different areas of the edge 22 as needed. This is beneficial to further improve the structural strength of the protective plate 20 and reduce the risk of edge cracking or deformation of the protective plate 20.

[0144] In some embodiments, the area corresponding to the molding die and the edge blank has reinforcing ribs 23 grooves. S20, a hot pressing process is performed on the first fiber resin layer 211, the reinforcing layer 213, the second fiber resin layer 212, and the edge blank, further including:

[0145] The third fiber material flows into the groove of the reinforcing rib 23 along with the resin material, and is cured in the groove of the reinforcing rib 23 to form the reinforcing rib 23. The reinforcing rib 23 is integrally formed with the edge portion 22 and protrudes from the edge portion 22.

[0146] Thus, during the molding process of the edge portion 22, the fluidity of the third fiber and resin material is utilized to integrally form the reinforcing rib 23 and the edge portion 22, which further simplifies the molding process of the reinforcing rib 23 and strengthens the structure of the edge portion 22 to improve the structural strength of the edge portion 22.

[0147] In some embodiments, such as Figure 4 , Figure 5 , Figure 6 and Figure 8 As shown, before laying the first fiber resin layer 211, the reinforcing layer 213, the second fiber resin layer 212, and the edge blank in the mold for forming the protective plate 20 (S10), the battery device manufacturing method further includes:

[0148] S30, the first fiber resin layer 211, the film layer, the reinforcing layer 213, the film layer and the second fiber resin layer 212 are laid out in sequence.

[0149] S40. The first fiber resin layer 211, the adhesive film layer, the reinforcing layer 213 and the second fiber resin layer 212 are hot-pressed together, and the two sides of the reinforcing layer 213 are respectively fused to the first fiber resin layer 211 and the second fiber resin layer 212 to form the body part 21.

[0150] That is, before step S10, the first fiber resin layer 211, the reinforcing layer 213 and the second fiber resin layer 212 have been subjected to a hot-pressing composite process. The reinforcing layer 213 is connected to the first fiber resin layer 211 and the second fiber resin layer 212 on both sides along the thickness direction to form the body part 21.

[0151] The adhesive film layer can improve the bonding strength between the first fiber resin layer 211 and the reinforcing layer 213, as well as between the second fiber resin layer 212 and the reinforcing layer 213.

[0152] Thus, the forming of the main body 21 is completed before step S10. Since the forming process of the main body 21 is relatively simple and its structure is straightforward, multiple protective plates 20 can be integrally formed in the main body 21 before step S10. That is, multiple protective plates 20 can be integrally formed in steps S30 and S40. In step S10, the main body 21 of corresponding dimensions is cut according to the dimensions of the protective plates 20. Furthermore, in step S10, only the main body 21 needs to be laid out, which simplifies the manufacturing process of the battery device 10.

[0153] Therefore, by setting the main body 21 separately and pre-forming it, it is easier to mass-produce the main body 21, which further simplifies the production process of the battery device 10.

[0154] Thirdly, the power-consuming device provided in the embodiments of this application includes the battery device 10 provided in any of the above embodiments, or the battery device 10 produced by the battery device production method that has been passed in any of the above embodiments, and the battery device 10 is used to provide electrical energy.

[0155] The power device provided in this application has the same technical effect because it uses the battery device 10 provided in any of the above embodiments, or the battery device 10 produced by the production method of the battery device provided in any of the above embodiments. It will not be described again here.

[0156] In some embodiments, such as Figures 2 to 6 As shown, the battery device 10 includes a housing 11, a battery cell 30, and a protective plate 20, with the battery cell 30 housed within the housing 11. The protective plate 20 includes a body portion 21 and an edge portion 22. The body portion 21 includes a first fiber resin layer 211, a reinforcing layer 213, and a second fiber resin layer 212, which are stacked sequentially. The edge portion 22 is constructed of resin material and surrounds the periphery of the body portion 21. The edge portion 22 includes a flange structure 221, which surrounds the periphery of the body portion 21 and extends toward the body portion 21 to form a connecting joint. The first fiber resin layer 211 is located on the side of the reinforcing layer 213 opposite to the battery cell 30. The connecting structure 222 is fused to the side of the first fiber resin layer 211 opposite to the reinforcing layer 213. The connecting structure 222 is also fused to the side of the second fiber resin layer 212 opposite to the reinforcing layer 213 and covers the end face of the periphery of the reinforcing layer 213. A reinforcing rib 23 protrudes from the side of the flange structure 221 opposite to the battery cell 30. The edge portion 22 also includes a transition structure 223, which connects the flange structure 221 and the connecting structure 222. The flange structure 221 is located on the side of the upper surface of the body portion 21 facing the battery cell 30. The first fiber resin layer 211 includes a first fiber material, the second fiber resin layer 212 includes a second fiber material, and the edge portion 22 includes a third fiber material. The fiber lengths of the first and second fiber materials are both greater than the fiber length of the third fiber material. The first and second fiber materials are continuous fibers, and the third fiber material is a discontinuous fiber. The length L of the third fiber satisfies: L≤2cm. Along the thickness direction of the protective plate 20, the area of ​​the orthographic projection of all battery cells 30 in the battery device 10 onto the first fiber resin layer 211 is S, and the area of ​​the reinforcing layer 213 onto the orthographic projection of the first fiber resin layer 211 is S1, where 80%≤S1 / S≤1. The thickness of the connection between the connecting structure 222 and the main body 21 is a, where 0.2mm≤a≤1.5mm.

[0157] The battery device 10 provided in this application embodiment has an edge portion 22 surrounding the periphery of the body portion 21. At least a portion of the edge portion 22 is fused to the side of the first fiber resin layer 211 away from the reinforcing layer 213 and covers the peripheral end face of the reinforcing layer 213. In this way, the edge portion 22 and the first fiber resin layer 211 can be integrally solidified after melting through a relatively simple process such as hot pressing. The first fiber resin layer 211 and the second fiber resin layer 212 provide protection for both sides of the reinforcing layer 213 along the thickness direction. The edge portion 22 protects the peripheral end face of the reinforcing layer 213. This reduces the risk of corrosion of the reinforcing layer 213 under the action of external impurities such as water and oxygen, and also simplifies the production process of the protective plate 20, thereby reducing the process difficulty in the production process of the battery device 10.

[0158] Although this application has been described with reference to preferred embodiments, various modifications can be made thereto and components can be replaced with equivalents without departing from the scope of this application. In particular, the technical features mentioned in the various embodiments can be combined in any manner, provided there is no structural conflict. This application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A battery device, characterized in that, include: Box; The battery cell is housed within the casing; A protective panel is installed below the housing. The protective panel includes a body part, which includes a first fiber resin layer, a reinforcing layer, and a second fiber resin layer stacked sequentially. The protective plate also includes an edge portion, which is constructed of resin material. The edge portion surrounds the periphery of the body portion and is fused to the side of the first fiber resin layer away from the reinforcing layer, and covers the end face of the periphery of the reinforcing layer.

2. The battery device according to claim 1, characterized in that, The edge portion includes a flange structure, which is disposed around the periphery of the body portion. The flange structure extends toward the body portion to form a connecting structure, which is fused to the side of the first fiber resin layer opposite to the reinforcing layer.

3. The battery device according to claim 2, characterized in that, The first fiber resin layer is located on the side of the reinforcing layer opposite to the battery cell, and the connection structure is also fused to the side of the second fiber resin layer opposite to the reinforcing layer.

4. The battery device according to claim 2, characterized in that, The edge portion also includes a transition structure that connects the flange structure and the connecting structure. The flange structure is located on the side of the upper surface of the body portion facing the battery cell.

5. The battery device according to claim 2, characterized in that, The flange structure has a reinforcing rib protruding from the side opposite to the battery cell.

6. The battery device according to any one of claims 1 to 5, characterized in that, The first fiber resin layer includes a first fiber material, the second fiber resin layer includes a second fiber material, and the edge portion includes a third fiber material. The fiber lengths of the first fiber material and the second fiber material are both greater than the fiber length of the third fiber material.

7. The battery device according to claim 6, characterized in that, The first and second fiber materials are continuous fibers, while the third fiber material is a discontinuous fiber.

8. The battery device according to claim 7, characterized in that, The length L of the third fiber satisfies: L≤2cm.

9. The battery device according to claim 1, characterized in that, Along the thickness direction of the protective plate, the area of ​​the orthographic projection of all the battery cells in the battery device onto the first fiber resin layer is S, and the area of ​​the reinforcing layer onto the orthographic projection of the first fiber resin layer is S1, where 80% ≤ S1 / S ≤ 1.

10. The battery device according to claim 2, characterized in that, The thickness of the connection structure at the point where it connects to the main body is 'a', where 0.2mm ≤ a ≤ 1.5mm.

11. A method for producing a battery device, characterized in that, include: In the protective plate forming mold, a first fiber resin layer, a reinforcing layer, a second fiber resin layer and an edge blank are laid out. The reinforcing layer is disposed between the first fiber resin layer and the second fiber resin layer. The edge blank surrounds the periphery of the reinforcing layer. The edge blank is constructed of resin material and overlaps the side of the first fiber resin layer away from the reinforcing layer. The first fiber resin layer, the reinforcing layer, the second fiber resin layer, and the edge blank are subjected to a hot pressing process. The reinforcing layer is connected to the second fiber resin layer and the second fiber resin layer to form a body portion. The edge blank is fused to the first fiber resin layer to form an edge portion. The edge portion covers the end face of the periphery of the reinforcing layer.

12. The method for producing the battery device according to claim 11, characterized in that, The step of laying a first fiber resin layer, a reinforcing layer, a second fiber resin layer, and an edge blank in the protective plate forming mold further includes: laying an adhesive film layer in the protective plate forming mold, wherein the adhesive film layer is disposed between the first fiber resin layer and the reinforcing layer, and / or, wherein the adhesive film layer is disposed between the second fiber resin layer and the reinforcing layer.

13. The method for producing the battery device according to claim 11, characterized in that, The edge blank also includes a third fiber material, which is pre-impregnated with a resin material.

14. The method for producing the battery device according to claim 13, characterized in that, The third fiber is a discontinuous fiber, and the length L of the third fiber satisfies: L≤2cm.

15. The method for producing the battery device according to claim 14, characterized in that, The molding die has reinforcing rib grooves in the area corresponding to the edge blank, and the hot pressing process for the first fiber resin layer, the reinforcing layer, the second fiber resin layer, and the edge blank further includes: The third fiber material flows into the reinforcing groove along with the resin material and is cured in the reinforcing groove to form a reinforcing rib. The reinforcing rib is integrally formed with the edge portion and protrudes relative to the edge portion.

16. A method for producing a battery device according to any one of claims 11 to 15, characterized in that, The method for producing the battery device further includes, prior to laying the first fiber resin layer, the reinforcing layer, the second fiber resin layer, and the edge blank in the protective plate molding die: The first fiber resin layer, the film layer, the reinforcing layer, the film layer, and the second fiber resin layer are laid out in sequence. The first fiber resin layer, the adhesive film layer, the reinforcing layer, and the second fiber resin layer are hot-pressed together, and the two sides of the reinforcing layer are respectively fused to the first fiber resin layer and the second fiber resin layer to form the body part.

17. An electrical device, characterized in that, Includes a battery device as described in any one of claims 1 to 10, or includes a battery device manufactured using a battery manufacturing method as described in any one of claims 11 to 16, the battery device being used to provide electrical energy.

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