Battery device and electric device

Abstract

The application belongs to the technical field of batteries, and provides a battery device and a power utilization device. The battery device comprises a box main body, a battery monomer, a cover body and an abutting plate. The box main body is provided with a cavity, and one side of the box main body forms an open port communicating with the cavity. The box main body is a concrete structure. The battery monomer is arranged in the cavity. The cover body is adapted to seal the open port to close the cavity. The abutting plate is arranged on the surface of the box main body facing the cover body. The abutting plate is sealingly connected with the box main body and sealingly connected with the cover body. The purpose is to increase the weight of the battery device, reduce the amount of counterweight blocks, and reduce the influence on the sealing performance of the box of the battery device.

Description

Technical Field

[0001] This application belongs to the field of battery technology, and in particular relates to a battery device and an electrical device. Background Technology

[0002] With the rise of new energy equipment, represented by new energy vehicles, battery devices have become a key power source.

[0003] In related technologies, the battery box of the battery device is mostly made of metal, composite materials, plastics and other materials. Commercial vehicles or passenger vehicles have relatively light requirements for the weight of the battery box, which can bring certain advantages to the total vehicle weight and energy consumption.

[0004] However, in the field of heavy industrial machinery, when heavy machinery (which can be vehicles) is in operation, additional counterweights are required to maintain balance. When heavy machinery is equipped with battery devices for power supply, not only are counterweights needed, but the battery device itself also needs to be installed, which not only occupies space but also increases costs. Using a higher-density material for the battery device housing to increase the weight of the battery device and replace the counterweight can alleviate the space occupation problem. However, for the battery device, the housing material itself can lead to poor sealing. Utility Model Content

[0005] In view of the above problems, this application provides a battery device and an electrical device, which aims to increase the weight of the battery device, reduce the amount of counterweight, and reduce the impact on the sealing performance of the battery device housing.

[0006] To address the aforementioned problems, in a first aspect, embodiments of this application provide a battery device, comprising:

[0007] The main body of the box has a cavity, and one side of the main body of the box forms an open opening that communicates with the cavity. The main body of the box is a concrete structure.

[0008] A single battery cell is disposed within the cavity;

[0009] A cover, adapted to seal the opening to close the cavity; and

[0010] An abutment plate is disposed on the surface of the box body facing the cover, the abutment plate being sealed to the box body and the cover.

[0011] The advantage of this embodiment is that it provides a larger box body, specifically a concrete structure with high density, which increases the mass of the battery device to balance the structural mass of various parts of the vehicle, reduces the use of counterweights, saves costs and vehicle space, and the concrete structure is stable and has high strength. In order to facilitate the sealing of the concrete box body and the cover, an abutment plate is also provided. The sealing process of the box body is facilitated by the abutment plate and the cover, which can reduce the impact on the sealing performance.

[0012] In one embodiment of the first aspect, the surface roughness of the abutment plate that is sealed to the cover is less than the surface roughness of the box body facing the cover.

[0013] In this embodiment, the surface of the abutment plate that seals with the cover has a smaller roughness than the surface of the main body of the box, resulting in smaller or no gaps when it is sealed with the cover, thus improving the sealing effect.

[0014] In one embodiment of the first aspect, the surface roughness Ra of the abutment plate and the cover body in a sealing connection is ≤3.2μm.

[0015] The advantage of this embodiment is that the roughness Ra≤3.2μm, which results in a relatively smooth surface and a better sealing effect when in contact with the cover.

[0016] In one embodiment of the first aspect, the surface roughness Ra of the abutment plate in contact with the box body is ≥6.3 μm. This increases the friction between the abutment plate and the box body, thereby increasing the strength of the connection.

[0017] In one embodiment of the first aspect, a portion of the abutment plate is embedded within the box body, and the surface of the abutment plate that is sealed to the cover is exposed on the surface of the box body facing the cover.

[0018] The advantage of this embodiment is that by embedding the abutment plate in the box body, a better sealing effect is achieved between the abutment plate and the box body, and the firmness of the abutment plate is strengthened so that it will not easily fall off.

[0019] In one embodiment of the first aspect, the abutment plate is an annular structure disposed around the opening.

[0020] The effect of this embodiment is that the abutment plate can be arranged in the circumferential direction to seal the opening from all directions, effectively enhancing the sealing effect on the opening side.

[0021] In one embodiment of the first aspect, the abutment plate is further connected to a reinforcing plate, which is connected to the main body of the box.

[0022] The effect of this embodiment is that, with the reinforcement of the reinforcing plate, the abutment plate can be more stably connected to the box body, avoiding shaking or even falling off.

[0023] In one embodiment of the first aspect, the reinforcing plate includes a first plate connected to the abutment plate, at least a portion of the first plate being embedded within the box body. This embodiment provides a reinforcing plate including a first plate, the connection between the first plate and the box body thereby strengthening the connection between the abutment plate and the box body.

[0024] In one embodiment of the first aspect, the reinforcing plate includes a second plate connected to the first plate, at least a portion of the second plate being embedded within the box body. The advantage of this embodiment is that the second plate further enhances the strength of the connection.

[0025] In one embodiment of the first aspect, a portion of the first plate is embedded within the box body, another portion of the first plate protrudes from the surface of the box body, and the second plate is completely embedded within the box body.

[0026] The advantage of this embodiment is that by providing an exposed portion on the surface of the first plate on the main body of the box, other components can be fixed as needed, which facilitates the configuration of various components of the battery device, while the second plate being completely embedded in the main body of the box increases the firmness of the connection.

[0027] In one embodiment of the first aspect, the surface roughness Ra of the surface of the reinforcing plate in contact with the body of the box is ≥6.3μm.

[0028] This embodiment provides a reinforcement plate with a roughness greater than or equal to 6.3μm, which creates greater friction between the reinforcement plate and the box body, making the reinforcement plate more securely fixed to the box body.

[0029] In one embodiment of the first aspect, the surfaces of the abutment plate and / or the reinforcing plate that contact the box body are provided with recessed structures and / or raised structures.

[0030] In order to increase the connection between the abutment plate, the reinforcing plate and the box body, this embodiment provides a recessed structure and / or a raised structure to increase the contact area and friction between the abutment plate, the reinforcing plate and the box body.

[0031] In one embodiment of the first aspect, the abutment plate and / or the reinforcing plate are sheet metal parts. Sheet metal parts have high strength and toughness, and their use can meet the usage requirements.

[0032] In one embodiment of the first aspect, a seal is provided between the abutment plate and the cover.

[0033] The advantage of this embodiment is that a sealing element is provided between the abutment plate and the cover. The sealing element can be a flexible sealing ring, sealing gasket, or other structure that can be adapted to the shape of the abutment plate. By pressing the sealing element between the abutment plate and the cover, the sealing effect can be enhanced.

[0034] In one embodiment of the first aspect, a receiving groove is further provided on the surface of the abutment plate that is sealed to the cover, and the sealing element is at least partially disposed in the receiving groove.

[0035] The advantage of this embodiment is that by placing the seal inside the receiving groove, the seal can be prevented from becoming misaligned during the extrusion process, and the receiving groove can also effectively prevent fluid from entering the cavity, thus providing a barrier and isolation.

[0036] In one embodiment of the first aspect, the depth of the receiving groove is 3 / 10 to 7 / 10 of the thickness of the seal when it is not compressed.

[0037] The effect of this embodiment is that it sets a limit on the compression of the seal, so that the seal has a limit on the compression while ensuring the sealing effect, thus maintaining the structural stability of the seal and preventing excessive compression from damaging the structure.

[0038] In one embodiment of the first aspect, the receiving groove is located at the middle of the abutment plate in its width direction; or, the receiving groove is located on the side of the abutment plate near the cavity in its width direction.

[0039] The advantage of this embodiment is that when the receiving groove is located in the middle of the abutment plate in the width direction, the seal can be well bound inside the receiving groove, making it less likely for the seal to be misaligned. When the receiving groove is located on the side close to the cavity and communicates with the cavity, the receiving groove can be open not only at the top but also at the side end located on the side of the cavity, which facilitates the processing of the receiving groove.

[0040] In one embodiment of the first aspect, the abutment plate is provided with a first through hole, the main body of the box is provided with a threaded hole corresponding to the first through hole, the cover is provided with a second through hole corresponding to the first through hole, and the battery device further includes a threaded fastener, which passes through the first through hole, the second through hole and the threaded hole to fix the cover, the abutment plate and the main body of the box together.

[0041] The advantage of this embodiment is that the seal is squeezed by tightening the threaded fastener, which is simple and quick to operate and the structure is stable when locked.

[0042] Secondly, this application also provides an electrical device, including the battery device described in any of the embodiments.

[0043] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, the following are specific embodiments of this application. Attached Figure Description

[0044] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiments below. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0045] Figure 1 This is a schematic diagram of the vehicle structure according to some embodiments of this application;

[0046] Figure 2 This is an exploded structural diagram of a battery device provided in some embodiments of this application;

[0047] Figure 3 for Figure 2 An enlarged structural diagram at point A;

[0048] Figure 4 for Figure 2 Schematic diagram of the main structure of the middle box;

[0049] Figure 5 for Figure 4 Structural diagram of the middle abutment plate and reinforcing plate;

[0050] Figure 6 for Figure 5 Enlarged structural diagram at point B;

[0051] Figure 7 for Figure 4 A schematic diagram of the cross-sectional structure;

[0052] Figure 8 for Figure 7 Enlarged structural diagram at point C;

[0053] Figure 9 A cross-sectional structural schematic diagram of the main body of the box provided in some embodiments of this application;

[0054] Figure 10 for Figure 9 A magnified structural diagram at point D.

[0055] The reference numerals in the detailed embodiments are as follows:

[0056] 1000, vehicles;

[0057] 100. Battery assembly; 200. Controller; 300. Motor;

[0058] 10. Battery cells;

[0059] 1. Box body; 11. Cover; 12. Opening; 13. Cavity; 14. Sealing element; 15. Threaded fastener; 16. Abutment plate; 161. Reinforcing plate; 1611. First plate; 1612. Second plate; 162. Protruding structure; 163. Receiving groove. Detailed Implementation

[0060] The embodiments of the technical solution of this application will now be described in detail with reference to the accompanying drawings. These embodiments are only used to more clearly illustrate the technical solution of this application and are therefore merely examples, and should not be used to limit the scope of protection of this application.

[0061] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein 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 specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0062] In the description of the embodiments of this application, technical terms such as "first" and "second" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly defined.

[0063] In this document, the term "embodiment" means that a particular 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 separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0064] In the description of the embodiments 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, and B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0065] In the description of the embodiments of this application, the term "multiple" refers to two or more (including two), similarly, "multiple sets" refers to two or more (including two sets), and "multiple pieces" refers to two or more (including two pieces).

[0066] In the description of the embodiments of this application, the technical terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0067] In the description of the embodiments of this application, unless otherwise expressly specified and limited, technical terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0068] Currently, judging from market trends, the application of battery devices is becoming increasingly widespread. Battery devices are not only used in energy storage power systems such as hydropower, thermal power, wind power, and solar power plants, but also widely used in electric vehicles such as electric bicycles, electric motorcycles, and electric cars, as well as in military equipment and aerospace. With the continuous expansion of battery application areas, the market demand is also constantly increasing.

[0069] The battery unit is a complete structural unit, including a housing. Multiple individual battery cells are housed inside the housing; in some special scenarios, only one individual battery cell may be housed inside the housing. When there are multiple individual battery cells, they can be arranged in a row to form a battery cell assembly.

[0070] The battery device provided 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, which are connected in series, parallel, or mixed connection via a busbar. Mixed connection refers to a combination of series and parallel connections.

[0071] In some embodiments, a battery cell assembly is typically formed by arranging multiple battery cells.

[0072] As an example, a battery cell assembly can be a battery module, which consists of multiple battery cells arranged and fixed together to form an independent module. Alternatively, a battery cell assembly can be formed by bundling multiple battery cells together with cable ties.

[0073] In some embodiments, the battery device may be a battery pack, which includes a housing and one or more individual battery cell assemblies housed within the housing.

[0074] 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.

[0075] As an example, battery cell assemblies can also be housed in a housing by directly fixing multiple battery cells to the housing.

[0076] This application provides an electrical device having a battery device 100, that is, an electrical device that uses the battery device 100 as a power source.

[0077] The technical solutions described in the embodiments of this application are applicable to various electrical devices using battery device 100. These electrical devices can be vehicles, ships, or aircraft, and vehicles can be trucks, excavators, cranes, passenger cars, commercial vehicles, etc. The embodiments of this application do not impose any special limitations on the aforementioned electrical devices.

[0078] The battery device 100 disclosed in this application can be used, but is not limited to, in electrical devices such as vehicles, ships, or aircraft. Electrical devices can use power systems equipped with the battery device 100 disclosed in this application, which helps improve the reliability of the electrical devices.

[0079] For ease of explanation, the following embodiments will use a vehicle 1000 as an example of the electrical device provided in this application.

[0080] Please refer to Figure 1 , Figure 1 This is a schematic diagram of the structure of a vehicle 1000 provided in some embodiments of this application. The vehicle 1000 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., and can be trucks, excavators, cranes, passenger cars, commercial vehicles, etc. A battery device 100 is installed inside the vehicle 1000, and the battery device 100 can be located at the bottom, front, or rear of the vehicle 1000. The battery device 100 can be used to power the vehicle 1000; for example, the battery device 100 can serve as the operating power source for the vehicle 1000. The vehicle 1000 may also include a controller 200 and a motor 300. The controller 200 is used to control the battery device 100 to supply power to the motor 300, for example, to meet the power needs of the vehicle 1000 during starting, navigation, and driving.

[0081] In some embodiments of this application, the battery device 100 can not only serve as the operating power source for the vehicle 1000, but also as the driving power source for the vehicle 1000, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1000.

[0082] The battery unit 100 can be installed in a suitable location on the vehicle 1000 as needed to balance the weight of various parts of the vehicle body.

[0083] In related technologies, heavy machinery (which may be vehicles) often requires counterweights during operation, such as cranes, or some trucks. The counterweight structure has a certain volume, as does the battery unit. Simultaneously installing both the counterweight and battery unit occupies significant onboard space and increases costs. If the battery casing is made of a high-density material, increasing the battery unit's weight and reducing the use of counterweights, then the casing material may compromise the battery casing's sealing performance.

[0084] Based on this, this application provides a battery device 100, please refer to... Figures 2-10 It includes the main body of the box 1, the battery cell 10, the cover 11, and the abutment plate 16.

[0085] The main body 1 has a cavity 13, and an open opening 12 is formed on one side of the main body 1 to communicate with the cavity 13. The main body 1 is a concrete structure. The battery cell 10 is located inside the cavity 13. The cover 11 is adapted to cover the open opening 12 to close the cavity 13. The abutment plate 16 is located on the surface of the main body 1 facing the cover 11. The abutment plate 16 is sealed to the main body 1 and sealed to the cover 11.

[0086] A concrete structure is a composite material structure in which aggregates are bound together by a cementing material. Depending on the cementing material, concrete can include cement concrete, gypsum concrete, silicate concrete, water glass concrete, asphalt concrete, polymer concrete, etc. For example, cement concrete uses cement as the cementing material, sand and gravel as aggregates, and water (which may contain admixtures and additives) in a certain proportion, and is obtained through mixing. Concrete structures have a simple manufacturing process, low cost, and high structural strength and weight.

[0087] Concrete structures have a high density and are heavier than traditional metal or plastic boxes of the same volume. To a certain extent, they play a role in balancing the structural mass of the vehicle 1000, allowing the vehicle 1000 to save or reduce the amount of counterweights used.

[0088] The main body 1 is the main structure of the battery device 100 except for the cover 11. It has a cavity 13 for placing the battery cell 10. An opening 12 is reserved on one side of the main body 1 for inserting the battery cell 10. The opening 12 is closed by covering the opening 12 with the cover 11.

[0089] Specifically, the box body 1 needs to be sealed to the cover 11. To achieve a better seal, this embodiment provides an abutment plate 16, which is disposed on the surface of the box body 1 facing the cover 11.

[0090] The shape of the abutment plate 16 can be adapted to the shape of the side surface of the box body 1 facing the cover 11, and can be an annular structure arranged around the opening 12, so that all-round closure is achieved in the entire circumferential direction.

[0091] The abutment plate 16 and the cover 11 are sealed together, and the abutment plate 16 and the box body 1 are also sealed. Specifically, the abutment plate 16 can be embedded in the box body 1.

[0092] The advantage of this embodiment is that it provides a larger box body 1, specifically made of concrete with a higher density, which increases the mass of the battery device 100 to balance the structural mass of various parts of the vehicle 1000, reduces the use of counterweights, saves costs and space in the vehicle 1000, and the concrete structure is stable and has high strength. In order to facilitate the sealing between the concrete box body 1 and the cover 11, an abutment plate 16 is also provided. The sealing process of the box body 1 is facilitated by the abutment plate 16 and the cover 11, which can reduce the impact on the sealing performance.

[0093] In some embodiments, the roughness of the surface of the abutment plate 16 that abuts and seals with the cover 11 is less than the roughness of the surface of the box body 1 facing the cover 11.

[0094] The surface roughness here can be the arithmetic mean deviation of the profile, which refers to the arithmetic mean of the absolute values ​​of the profile deviations within the sampling length. It can be measured using the stylus method. The specific measurement process is as follows: a diamond stylus with a tip curvature radius of approximately 2 micrometers is slowly slid along the surface being measured. The vertical displacement of the diamond stylus is converted into an electrical signal by an electrical length sensor, which is then amplified, filtered, and calculated before being displayed on a display instrument to indicate the surface roughness value.

[0095] The main body 1 of the box is made of concrete, which has a relatively large surface roughness. In this embodiment, the surface of the abutment plate 16 that seals with the cover 11 has a smaller roughness than the surface of the main body 1, that is, it is smoother. As a result, the surface of the abutment plate 16 has fewer fine grooves, and the gap formed when it is sealed with the cover 11 is smaller or non-existent, which can improve the sealing effect.

[0096] In some embodiments, the surface roughness Ra of the sealing connection between the abutment plate 16 and the cover 11 is ≤3.2μm, where Ra is the arithmetic mean deviation of the profile. That is, the surface roughness value mentioned above is less than or equal to 3.2μm.

[0097] With a roughness Ra≤3.2μm, the surface is relatively smooth and has a good sealing effect when in contact with the cover 11.

[0098] In some embodiments, the surface roughness Ra of the contact plate 16 in contact with the box body 1 is ≥6.3μm.

[0099] Specifically, the abutment plate 16 is disposed on the box body 1 and connected to the box body 1. Therefore, the abutment plate 16 has a surface that contacts the box body 1, and its roughness value is greater than or equal to 6.3μm. This increases the friction between the abutment plate 16 and the box body 1, and increases the firmness of the connection.

[0100] In some embodiments, please refer to Figures 2-4 Part of the abutment plate 16 is embedded in the box body 1, and the surface of the abutment plate 16 that is sealed to the cover 11 is exposed on the surface of the box body 1 facing the cover 11.

[0101] The surface of the abutment plate 16 that is sealed to the cover 11 is the surface of the abutment plate 16 facing the cover 11, which is exposed from the surface of the box body 1 toward the cover 11.

[0102] The abutment plate 16 can be embedded in the surface of the box body 1 facing the cover 11.

[0103] Specifically, while ensuring a seal between the abutment plate 16 and the cover 11, it is also necessary to ensure a seal between the abutment plate 16 and the box body 1. The surface of the box body 1 facing the cover 11 forms an open opening 12. Since the box body 1 has a certain thickness, this surface has a certain width, equal to the thickness of the box body 1, and is an annular surface.

[0104] The abutment plate 16 is disposed on the annular surface and can be a matching annular shape with a width less than or equal to the width of the surface. Partially embedding the abutment plate 16 into the box body 1 means that the abutment plate 16 can be partially buried in the surface with a certain pre-embedded depth, but the top surface of the abutment plate 16 that seals with the cover 11 is exposed to contact and seal with the cover 11.

[0105] The effect of this embodiment is that by embedding the abutment plate 16 in the box body 1, the abutment plate 16 and the box body 1 have a better sealing effect, and the firmness of the abutment plate 16 is strengthened so that it will not easily fall off.

[0106] In some embodiments, please refer to Figures 2-4The abutment plate 16 is a ring structure arranged around the opening 12.

[0107] Specifically, the function of the abutment plate 16 is to abut and seal with the cover 11, which is essentially to seal the opening 12. Therefore, the abutment plate 16 is arranged around the opening 12 to form a ring structure that matches the shape of the edge of the opening 12.

[0108] The shape of the opening 12 can be rectangular, circular, etc., and the shape of the mating plate 16 can also be rectangular, circular, etc.

[0109] The effect of this embodiment is that the abutment plate 16 can be arranged in the circumferential direction to seal the opening 12 in all directions, effectively enhancing the sealing effect on one side of the opening 12.

[0110] In some embodiments, please refer to Figures 2-5 The abutment plate 16 is also connected to a reinforcing plate 161, which is connected to the main body 1 of the box.

[0111] Specifically, the abutment plate 16 is connected to a reinforcing plate 161, which can be embedded in the box body 1 to achieve the connection with the box body 1.

[0112] To further enhance the reliability of the abutment plate 16 fixedly on the box body 1, this embodiment provides a reinforcing plate 161. The reinforcing plate 161 is connected to the abutment plate 16. The two can be an integral plate or connected by welding or other means. The reinforcing plate 161 can be embedded in the box body 1 to achieve the connection. Embedding means that the reinforcing plate 161 is pre-embedded in the box body 1 with a certain pre-embedding depth, or it can be completely embedded in the box body 1, forming a stable connection with the box body 1.

[0113] The effect of this embodiment is that, with the reinforcement of the reinforcing plate 161, the abutment plate 16 can be more stably connected to the box body 1, avoiding shaking or even falling off.

[0114] In some embodiments, please refer to Figures 5-10 The reinforcing plate 161 includes a first plate 1611 connected to the abutment plate 16, and at least a portion of the first plate 1611 is embedded in the box body 1.

[0115] The first plate 1611 can be vertically connected to the abutment plate 16. The first plate 1611 can be embedded in the box body 1. The first plate 1611 can be parallel to the surface of the box body 1 and embedded in the surface.

[0116] This embodiment provides a reinforcing plate 161 including a first plate 1611. The connection between the first plate 1611 and the box body 1 strengthens the connection between the abutment plate 16 and the box body 1.

[0117] In some embodiments, please refer to Figures 5-10 The reinforcing plate 161 may also include a second plate 1612 connected to the first plate 1611, at least a portion of the second plate 1612 being embedded in the box body 1.

[0118] The second plate 1612 can be inserted into the box body 1, and the second plate 1612 can be parallel to the abutment plate 16.

[0119] The reinforcing plate 161 includes a first plate 1611 and a second plate 1612, one of which is perpendicular to the abutment plate 16 and the other is parallel to the abutment plate 16. Both are embedded in the box body 1. For ease of embedding, the first plate 1611 is directly embedded in the surface of the box body 1, which can be the inner or outer surface, while the second plate 1612 is inserted into the interior of the box body 1. Specifically, before pouring the concrete box body 1, the first plate 1611 and the second plate 1612 can be placed in preset positions, and then concrete can be poured to form an integral structure, thus completing the embedding of the first plate 1611 and the second plate 1612 within the box body 1.

[0120] The advantage of this embodiment is that it further provides a second plate 1612, which increases the firmness of the connection. When the first plate 1611 is perpendicular to the abutment plate 16 and the second plate 1612 is parallel to the abutment plate 16, the first plate 1611 and the second plate 1612 are embedded in the box body 1 in two mutually perpendicular directions, making it difficult for the abutment plate 16 to be displaced or misaligned in both directions, thereby improving the stability of the connection between the abutment plate 16 and the box body 1.

[0121] In some embodiments, please refer to Figure 6 , Figures 7-10 A portion of the first plate 1611 is embedded inside the box body 1, and another portion of the first plate 1611 is exposed on the surface of the box body 1. The second plate 1612 is completely embedded in the box body 1.

[0122] Specifically, the first plate 1611 can be embedded in the inner surface of the main body 1, i.e., the inner wall of the cavity 13, or it can be embedded in the outer surface of the main body 1, i.e., the outer wall of the main body 1, depending on the needs, and can be exposed on either the inner or outer surface. The exposed part can be a plate surface flush with the surface of the main body 1, and this plate surface can be provided with some structures for fixing other devices, such as connectors, which are used to connect the battery cells 10 inside the main body 1 of the battery device 100. Alternatively, when the first plate 1611 is on the inner surface of the main body 1, some structures can also be provided to connect the battery cells 10 to achieve positioning of the battery cells 10. The second plate 1612 is inserted into the main body 1 in a direction perpendicular to the surface, and together with the first plate 1611, it achieves fixation of the abutment plate 16 in two directions.

[0123] The advantage of this embodiment is that by providing an exposed portion on the surface of the first plate 1611 on the main body 1, other components can be fixed as needed, which facilitates the configuration of various components of the battery device 100. The second plate 1612 is completely embedded in the main body 1, which increases the firmness of the connection.

[0124] In some embodiments, the surface roughness Ra of the reinforcing plate 161 in contact with the box body 1 is ≥6.3μm.

[0125] When the reinforcing plate 161 is embedded in the box body 1, the surface roughness Ra of the plate body 161 located in the box body 1 is ≥6.3μm. Specifically, the surface roughness Ra of the first plate 1611 and / or the second plate 1612 embedded in the box body 1 is ≥6.3μm.

[0126] This embodiment provides that the roughness of the reinforcing plate 161 is greater than or equal to 6.3μm, which creates greater friction between the reinforcing plate 161 and the box body 1, making the reinforcing plate 161 and the box body 1 more securely fixed.

[0127] In some embodiments, please refer to Figure 6 The surfaces of the abutment plate 16 and / or the reinforcing plate 161 that are in contact with the main body 1 of the box are provided with recessed structures and / or raised structures 162.

[0128] Specifically, the abutment plate 16 and the reinforcing plate 161 may be embedded in the body of the box 1 and have a recessed structure and / or a raised structure 162 on their surface.

[0129] In order to increase the connection between the abutment plate 16, the reinforcing plate 161 and the box body 1, this embodiment provides a recessed structure and / or a raised structure 162 to increase the contact area and friction between the abutment plate 16, the reinforcing plate 161 and the box body 1.

[0130] Specifically, the recessed structure can be a groove or the like formed on the surface of the abutment plate 16, and the raised structure 162 can be a raised textured structure or the like formed on the surface of the abutment plate 16.

[0131] Please see Figure 6 The raised structure 162 may include a raised textured structure. The distance between the top and bottom of the textured structure in a direction perpendicular to the surface of the abutment plate 16 or reinforcing plate 161 can be 0.3mm-1.0mm. The textured structure can be a raised pattern on the plate surface, and the pattern shape can be selected as needed, such as stripes. The distance between the top and bottom of the textured structure can be 0.3mm-1.0mm, that is, the protrusion height of the textured structure is 0.3mm-1.0mm.

[0132] The effect of this embodiment is that it can effectively increase friction and contact area, and strengthen the connection between the abutment plate 16, the reinforcing plate 161 and the box body 1.

[0133] In some embodiments, the abutment plate 16 and / or the reinforcing plate 161 are sheet metal parts.

[0134] Specifically, sheet metal parts possess high strength and toughness, meeting usage requirements. Furthermore, they exhibit good ductility and malleability, allowing them to be processed into various shapes to suit the shape requirements of the abutment plate 16 and the reinforcing plate 161. The sheet metal parts have smooth surfaces, ensuring good contact and sealing between the sealing element 14 and the cover 11. Additionally, recessed and / or raised structures 162 can be machined onto the sheet metal parts as needed to enhance the connection between the abutment plate 16, the reinforcing plate 161, and the main body 1 of the housing.

[0135] In some embodiments, please refer to Figure 2 , Figures 7-10 A sealing element 14 is provided between the abutment plate 16 and the cover 11.

[0136] Specifically, a sealing element 14 is provided between the abutment plate 16 and the cover 11. The sealing element 14 can be a structure with elastic sealing ring, sealing gasket, etc., which can be adapted to the shape of the abutment plate 16. By pressing the sealing element 14 in the middle between the abutment plate 16 and the cover 11, the sealing effect can be enhanced.

[0137] In some embodiments, the seal 14 includes at least one of a rubber component, a foam component, a foamed component, and a plastic component.

[0138] This embodiment provides that the sealing element 14 can be made of materials that have good flexibility, can deform under pressure, and have certain insulation, waterproof and corrosion resistance effects.

[0139] In some embodiments, please refer to Figure 3 , Figures 7-10 The surface of the abutment plate 16 and the cover 11 that are sealed together is also provided with a receiving groove 163, and the sealing element 14 is at least partially provided in the receiving groove 163.

[0140] The receiving groove 163 can be extended along the length of the abutment plate 16. The receiving groove 163 can be a groove or the like. It is formed on the abutment plate 16 and extends along the length of the abutment plate 16 to form a ring. The sealing member 14 is placed in the receiving groove 163, which can prevent the sealing member 14 from being misaligned during the extrusion process. The receiving groove 163 can also effectively prevent liquid from entering the cavity 13 and provide a barrier and isolation.

[0141] In some embodiments, please refer to Figure 8 and Figure 10 The depth h of the receiving groove 163 is 3 / 10 to 7 / 10 of the thickness of the seal 14 when it is not compressed.

[0142] The depth h of the receiving groove 163 refers to the distance between the surface of the receiving groove 163 used to place the seal 14 and the surface of the abutment plate 16 used to seal against the cover 11.

[0143] Specifically, the depth of the receiving groove 163 is less than the thickness of the seal 14 when it is not compressed, so that a portion of the seal 14 is outside the receiving groove 163, i.e., above the top of the receiving groove 163, and the portion inside the receiving groove 163 is 3 / 10 to 7 / 10 of the total thickness of the seal 14. When the abutment plate 16 and the cover 11 are fully fitted, the seal 14 is not fully compressed.

[0144] The effect of this embodiment is that it sets a limit on the compression amount of the seal 14, so that the seal 14 has a limit on the compression amount while ensuring the sealing effect, thus maintaining the structural stability of the seal 14 and preventing excessive compression from damaging the structure.

[0145] In some embodiments, please refer to Figure 8 and Figure 10 The depth h of the receiving groove 163 can be 2.0mm-3.0mm.

[0146] This embodiment provides a specific depth of 2.0mm-3.0mm for the receiving groove 163, and limits the thickness of the sealing element 14 so that the sealing element 14 does not need to be designed to be too thick or too thin, just enough to meet the usage requirements.

[0147] In some embodiments, please refer to Figure 7 and Figure 8 The receiving groove 163 is located at the center of the abutment plate 16 in its width direction; or, see [link to relevant documentation]. Figure 9 and Figure 10 The receiving groove 163 is located on the side of the abutment plate 16 near the cavity 13 in its width direction.

[0148] Specifically, the abutment plate 16 is disposed on the surface of the box body 1 facing the cover 11, and is in the shape of a ring, surrounding the opening 12. The abutment plate 16 has a certain width, and its width direction is the thickness direction of the box body 1. The receiving groove 163 can be located in the middle of the abutment plate 16 in the width direction of the abutment plate 16, forming a groove that is only open on the upper side. Alternatively, the receiving groove 163 can be located on the side close to the cavity 13 and can communicate with the cavity 13.

[0149] The advantage of this embodiment is that when the receiving groove 163 is located in the middle of the abutment plate 16 in the width direction, the seal 14 can be well bound inside the receiving groove 163, making it less likely for the seal 14 to be misaligned. When the receiving groove 163 is located on the side close to the cavity 13 and communicates with the cavity 13, the receiving groove 163 can be open at the top and at the side end located on the side of the cavity 13, which facilitates the processing of the receiving groove 163.

[0150] In some embodiments, please refer to Figures 7-10 The abutment plate 16 is provided with a first through hole, the body 1 of the box is provided with a threaded hole at the position corresponding to the first through hole, the cover 11 is provided with a second through hole at the position corresponding to the first through hole, and the battery device 100 also includes a threaded fastener 15, which passes through the first through hole, the second through hole and the threaded hole to fix the cover 11, the abutment plate 16 and the body 1 of the box in place.

[0151] Specifically, the sealing element 14 is disposed between the abutment plate 16 and the cover 11. A certain amount of compressive force is required to keep the sealing element 14 under compression to achieve a good sealing effect. Therefore, this embodiment provides a locking method using threaded fasteners 15. The threaded fastener 15 can be a bolt. After passing through the first and second through holes, the threaded fastener 15 enters the threaded hole. As the threaded fastener 15 is tightened, the cover 11 and the abutment plate 16 move closer together, achieving a compression seal. When the sealing element 14 is provided, it is simultaneously compressed, resulting in a better sealing effect. Multiple threaded fasteners 15 and threaded holes can be provided, spaced apart along the length of the abutment plate 16.

[0152] The advantage of this embodiment is that the sealing element 14 is squeezed by tightening the threaded fastener 15, which is simple and quick to operate and the structure is stable when locked.

[0153] This application also provides an electrical device, including the battery device 100 described in any embodiment.

[0154] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and not to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application, and they should all be covered within the scope of the claims and specification of this application. In particular, as long as there is no structural conflict, the various technical features mentioned in the embodiments can be combined in any way. 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: The main body of the box has a cavity, and one side of the main body of the box forms an open opening that communicates with the cavity. The main body of the box is a concrete structure. A single battery cell is disposed within the cavity; A cover, adapted to seal the opening to close the cavity; as well as An abutment plate is disposed on the surface of the box body facing the cover, the abutment plate being sealed to the box body and the cover.

2. The battery device as claimed in claim 1, characterized in that, The surface roughness of the abutment plate that is sealed to the cover is less than the surface roughness of the box body facing the cover.

3. The battery device as described in claim 1 or 2, characterized in that, The surface roughness Ra of the sealing connection between the abutment plate and the cover body is ≤3.2μm.

4. The battery device according to any one of claims 1-3, characterized in that, The surface roughness Ra of the contact plate that contacts the main body of the box is ≥6.3μm.

5. The battery device according to any one of claims 1-4, characterized in that, Part of the abutment plate is embedded inside the box body, and the surface of the abutment plate that is sealed to the cover is exposed on the surface of the box body facing the cover.

6. The battery device according to any one of claims 1-5, characterized in that, The abutment plate is a ring structure arranged around the open opening.

7. The battery device according to any one of claims 1-6, characterized in that, The abutment plate is also connected to a reinforcing plate, which is connected to the main body of the box.

8. The battery device as claimed in claim 7, characterized in that, The reinforcing plate includes a first plate connected to the abutment plate, at least a portion of which is embedded within the main body of the box.

9. The battery device as claimed in claim 8, characterized in that, The reinforcing plate includes a second plate connected to the first plate, and at least a portion of the second plate is embedded within the main body of the box.

10. The battery device as claimed in claim 9, characterized in that, A portion of the first plate is embedded within the box body, another portion of the first plate protrudes from the surface of the box body, and the second plate is completely embedded within the box body.

11. The battery device according to any one of claims 7-10, characterized in that, The surface roughness Ra of the reinforcing plate in contact with the main body of the box is ≥6.3μm.

12. The battery device according to any one of claims 7-11, characterized in that, The surfaces of the abutment plate and / or the reinforcing plate that contact the main body of the box are provided with recessed structures and / or raised structures.

13. The battery device according to any one of claims 7-12, characterized in that, The abutment plate and / or the reinforcing plate are sheet metal parts.

14. The battery device according to any one of claims 1-13, characterized in that, A sealing element is provided between the abutment plate and the cover.

15. The battery device as claimed in claim 14, characterized in that, The surface of the abutment plate that is sealed to the cover is also provided with a receiving groove, and the sealing element is at least partially disposed in the receiving groove.

16. The battery device as claimed in claim 15, characterized in that, The depth of the receiving groove is 3 / 10 to 7 / 10 of the thickness of the seal when it is not compressed.

17. The battery device as claimed in claim 15 or 16, characterized in that, The receiving groove is located in the middle of the abutment plate in its width direction; or, the receiving groove is located on the side of the abutment plate near the cavity in its width direction.

18. The battery device according to any one of claims 1-17, characterized in that, The abutment plate is provided with a first through hole, the main body of the box is provided with a threaded hole corresponding to the first through hole, the cover is provided with a second through hole corresponding to the first through hole, and the battery device further includes a threaded fastener, which passes through the first through hole, the second through hole and the threaded hole to fix the cover, the abutment plate and the main body of the box in place.

19. An electrical appliance, characterized in that, Includes the battery device according to any one of claims 1-18.

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