Battery device and electric device

Abstract

The utility model discloses a battery device and a power utilization device, the battery device comprises a box body, a cover body and a shielding piece, and the box body comprises a box body connecting part; the cover body comprises a cover body connecting part, the cover body covers the box body to form a space for accommodating the battery monomers, and the cover body connecting part and the box body connecting part are oppositely arranged and connected; the box body connecting part comprises a first box body surface opposite to the cover body connecting part and a second box body surface adjacent to the first box body surface; the cover body connecting part comprises a first cover body surface opposite to the first box body surface; a notch is formed in the position, opposite to the second box body surface, of the cover body connecting part. A first gap is formed between the surface of the first box body and the surface of the first cover body at the notch, and an opening of the first gap faces the notch; the shielding piece comprises a first shielding part, and the first shielding part is arranged at the notch and used for shielding the first gap. The battery device is good in waterproof performance.

Description

Technical Field

[0001] This application relates to the field of batteries, specifically to a battery device and an electrical device. Background Technology

[0002] Energy conservation and emission reduction are key to the sustainable development of the automotive industry, and electric vehicles, due to their energy-saving and environmentally friendly advantages, have become an important component of this sustainable development. For electric vehicles, battery technology is a crucial factor in their development.

[0003] During battery use, the battery's waterproof performance is an important indicator that affects its lifespan. Utility Model Content

[0004] In view of the above problems, this application provides a battery device and an electrical device that can improve the waterproof performance of the battery.

[0005] In a first aspect, this application provides a battery device, comprising:

[0006] The enclosure includes a enclosure connecting part;

[0007] The cover includes a cover connecting part, which is disposed opposite to and connected to the box connecting part to form a space for accommodating a single battery cell;

[0008] The box body connecting part includes a first box body surface opposite to the cover connecting part and a second box body surface adjacent to the first box body surface;

[0009] The cover connecting portion includes a first cover surface opposite to the first box surface; the cover connecting portion forms a notch at a position opposite to the second box surface; at the notch, a first gap is formed between the first box surface and the first cover surface, and the opening of the first gap faces the notch;

[0010] A shielding component, comprising a first shielding portion disposed at the notch, the first shielding portion being fixedly connected to at least one of the housing connecting portion or the cover connecting portion, the first shielding portion being used to shield the first gap.

[0011] The battery device provided in this application embodiment has a notch on the cover connection part and a shielding member at the notch. The shielding member blocks the first gap corresponding to the notch. When water is sprayed into the first gap, the shielding member is located outside the first gap, which prevents external water from entering the first gap and reflects the water flow to a certain extent, so that the water flow cannot enter the first gap. Therefore, the waterproof performance of the battery device can be improved.

[0012] The battery device provided in this application has the following advantages: (1) A notch is provided on the cover connection part to make room for the shielding part. The shielding part occupies less space on the side wall of the box, thus reducing the phenomenon of interference with the side wall of the box; (2) The shielding part is set at the notch, that is, the space occupied by the shielding part is the original space of the cover connection part. Therefore, it is not easy to increase the overall volume of the battery device after adding the shielding part.

[0013] In some embodiments, the cover connection portion has a first corner, and the notch is located at the first corner of the cover connection portion.

[0014] By using the above technical solution, a notch is provided at the first corner of the cover connection, which can reduce the interference between the battery device and the external structure at the first corner and reduce the space occupied by the battery device at the first corner.

[0015] In some embodiments, a sealing gasket is provided between the cover connecting portion and the box connecting portion, the sealing gasket is arranged circumferentially along the cover connecting portion, and the first shielding portion shields the portion of the sealing gasket located in the first gap.

[0016] The above technical solution further improves the waterproof performance of the battery device by setting a sealing gasket between the cover connection and the housing connection. Furthermore, this solution seals the first gap by setting a sealing gasket between the cover connection and the housing connection, and then uses a shielding member to block the first gap from the outer edge of the cover connection. This covers the area where a small gap might occur between the sealing gasket and the first cover surface of the cover connection. This area, shielded by the shielding member, is less susceptible to water flow impact and therefore less likely to develop gaps, thus reducing the possibility of water seeping into the battery device and enabling the battery device to meet high-level waterproof requirements.

[0017] In some embodiments, the first shielding portion is fixedly connected to the surface of the second housing and extends toward the cover connecting portion; or, the first shielding portion is fixedly connected to the cover connecting portion and extends toward the surface of the second housing; or, the first shielding portion is fixedly connected to both the housing connecting portion and the cover connecting portion.

[0018] By using the above technical solution, the shielding component is fixedly installed on the connecting part of the cover and / or the connecting part of the box, which can reduce the risk of the shielding component falling off under the impact of high-pressure water flow.

[0019] In some embodiments, the cover connection includes a second cover surface disposed on the side of the cover away from the first housing surface; the first shielding portion extends to be flush with the second cover surface.

[0020] Through the above technical solution, the first shielding part is flush with the surface of the second cover, and extends beyond the surface of the first cover by a certain distance (approximately the wall thickness of the cover connection part). This effectively blocks the first gap between the surface of the first housing and the surface of the first cover, reducing the possibility of high-pressure water entering the battery device through the first gap. When a sealing gasket is provided within the first gap, the second shielding part blocks the area where a tiny gap might form between the sealing gasket and the surface of the first cover under the impact of high-pressure water, further reducing the possibility of high-pressure water entering the battery device through the gap between the sealing gasket and the surface of the first cover, thus ensuring waterproof performance. The first shielding part makes full use of the space at the notch and does not extend beyond the surface of the second cover; therefore, the space occupied by the first shielding part is relatively small.

[0021] In some embodiments, the cover connection includes a second cover surface disposed on the side of the cover away from the first housing surface; the first shielding portion extends to protrude from the second cover surface.

[0022] Through the above technical solution, the first shielding part has a large shielding area and a good water-blocking effect. In addition, when the surface of the second cover is not the most protruding part of the cover surface, or in other words, there is a certain space above the surface of the second cover at the first cover connection part, the first shielding part extends to protrude from the surface of the second cover, which can achieve a better waterproof effect, while not easily increasing the size of the battery device.

[0023] In some embodiments, the shielding member further includes a second shielding portion, which is fixedly connected to the side of the first shielding portion facing the first gap, and the second shielding portion extends into the first gap; the sealing gasket is located inside the second shielding portion.

[0024] Through the above technical solution, the first shielding part fills the first gap, blocking the space between the sealing gasket and the first shielding part, further preventing water from entering the sealing gasket and improving waterproof performance. In addition, the second shielding part also serves to support the first shielding part. When the second shielding part is pressed or bonded between the surface of the first housing and the surface of the first cover, the second shielding part also serves to fix the first shielding part to the battery device.

[0025] In some embodiments, the second shielding portion is pressed between the surface of the first housing and the surface of the first cover.

[0026] Through the above technical solution, one side of the second shielding part can contact the surface of the first box, and the other side of the second shielding part can contact the surface of the first cover. The second shielding part is sandwiched between the cover connecting part and the box connecting part, thereby achieving a fixed connection between the second shielding part and the cover connecting part and the box connecting part. Through the fixed connection between the second shielding part and the cover connecting part and the box connecting part, the fixed connection between the first shielding part and the cover connecting part and the box connecting part is indirectly achieved.

[0027] In some embodiments, the rigidity of the shielding member is greater than the rigidity of the sealing gasket.

[0028] The above technical solution makes the shielding component more impact-resistant than the sealing gasket. Under the impact of high-pressure water flow, the second shielding part is not easily deformed or displaced. Even under the impact of high-pressure water flow, it is not easy for gaps to form between it and the surface of the first cover, ensuring good waterproof performance. In addition, the rigid second shielding part is pressed between the surface of the first housing and the surface of the first cover, realizing a rigid connection between the shielding component and the surfaces of the first housing and the first cover, ensuring reliable connection.

[0029] In some embodiments, the second shielding portion is bonded to the surface of the first housing; and / or, the second shielding portion is bonded to the surface of the second housing.

[0030] Through the above technical solution, the second shielding part is bonded to the box body connection part and / or the cover connection part, further improving the firmness of the second shielding part. When the second shielding part is bonded to the box body connection part and / or the cover connection part, and is also pressed between the box body connection part and the cover connection part, the second shielding part can effectively seal and connect the box body connection part and the cover connection part, resulting in a tight seal and high reliability.

[0031] In some embodiments, the portion of the sealing gasket located in the first gap and the second blocking portion are spaced apart along a first direction, the first direction being the direction from the center of the sealing gasket toward the gap.

[0032] The above technical solution maintains a gap between the sealing gasket and the second shielding part, making it less likely for the second shielding part to come into contact with the sealing gasket and thus less likely to affect the sealing performance of the sealing gasket. The sealing gasket and the second shielding part can perform their respective waterproofing functions.

[0033] In some embodiments, along the circumferential direction of the cover connection portion, the first cover surface includes a first region corresponding to the notch and a second region without the notch; the first region forms a first gap with the first box surface, and the second region forms a second gap with the first box surface; the second region is connected to a folding portion, which folds towards the box connection portion to cover the second gap.

[0034] Through the above technical solution, when the space outside the side wall of the housing can accommodate the folding part, a folding part can be set in the second area to cover the second gap. When the space outside the side wall of the housing cannot accommodate the folding part, a notch can be set on the cover connection part and a shielding component can be added to cover the first gap. This solution can flexibly set the folding part or the shielding component according to the space. By combining the folding part and the shielding component, the waterproof performance requirements are met while satisfying the space design requirements of the battery device.

[0035] In some embodiments, the folding portion includes an inner wall of the folding portion near the second gap and an outer wall of the folding portion away from the second gap, and the first shielding portion extends to at least cover the inner wall of the folding portion.

[0036] The above technical solution extends the first shielding part to at least cover the inner wall of the folded part, blocking the gap between the inner wall of the folded part and the sealing gasket, thereby further improving the waterproof performance.

[0037] In some embodiments, the folding portion extends to cover the side wall of the box, the side wall of the box intersects with the surface of the first box; there is a third gap between the folding portion and the side wall of the box, and the shielding member further includes a third shielding portion connected to the first shielding portion, the third shielding portion being used to shield the third gap.

[0038] By using the above technical solution, a third shielding part is connected to the first shielding part. The third shielding part is used to shield the third gap between the folding part and the side wall of the box, which further improves the waterproof performance of the battery device.

[0039] In some embodiments, the sidewall of the box includes a first sidewall and a second sidewall, and the first sidewall, the second sidewall and the surface of the first box intersect to form a second corner of the box; there is a third gap between the folding part and the first sidewall, and between the folding part and the second sidewall; there are two third blocking parts on each blocking member, and each third blocking part blocks one of the third gaps.

[0040] By using the above technical solution, two third shielding parts are set at the second corner of the housing, and each third shielding part blocks one of the third gaps, so that the third gaps on both sides of the second corner are covered, which further improves the waterproof performance of the battery device.

[0041] In some embodiments, the two third blocking portions form a U-shaped snap-fit ​​structure with the first blocking portion, and the U-shaped snap-fit ​​structure snaps into the second corner of the housing.

[0042] Through the above technical solution, the two third blocking parts and the first blocking part form a U-shaped snap-fit ​​structure. The two third blocking parts can not only cover the third gaps on both sides of the box, but also play a connecting role, snap-fitting and fixing the blocking parts to the second corner of the box.

[0043] Secondly, this application provides an electrical device that includes the battery device described in the above embodiments, the battery device being used to provide electrical energy.

[0044] The electrical device provided in this application has good waterproof performance, and the waterproof structure occupies less space, reducing interference with the side wall of the enclosure.

[0045] 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

[0046] 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:

[0047] Figure 1 This is a schematic diagram of the vehicle structure according to some embodiments of this application;

[0048] Figure 2 This is an exploded view of the battery device according to some embodiments of this application;

[0049] Figure 3 This is an exploded structural diagram of a battery cell according to some embodiments of this application;

[0050] Figure 4 This is a schematic diagram of the structure of a battery device according to some embodiments of this application;

[0051] Figure 5 for Figure 4 A schematic diagram of the exploded structure of the battery device in the diagram;

[0052] Figure 6 for Figure 4 Enlarged view of the battery device at point A1;

[0053] Figure 7 for Figure 4 A bottom view of the cover of the battery device (first cover surface facing up);

[0054] Figure 8 for Figure 7 Enlarged view of the battery device at point A2;

[0055] Figure 9 for Figure 4 Top view of the battery unit housing (first housing surface facing up);

[0056] Figure 10 for Figure 9 Enlarged view of the battery device at point A3;

[0057] Figure 11 This is a schematic diagram of the structure at the second corner of the housing of the battery device according to some embodiments of this application;

[0058] Figure 12 This is an exploded structural diagram of the corner of the battery device in some embodiments of this application;

[0059] Figure 13 This is a schematic diagram of the corner structure of the battery device after removing the obstruction in some embodiments of this application;

[0060] Figure 14 This is a schematic diagram of the structure of the shielding member in some embodiments of this application.

[0061] The reference numerals in the detailed embodiments are as follows:

[0062] Vehicle 1000; Battery unit 100; Controller 200; Motor 300;

[0063] Battery cell 20, end cap 21, electrode terminal 21a, housing 22, cell assembly 23, tab 23a;

[0064] 10. Outer shell, 11. Cover, 12. Box, 13. Sealing gasket, 14. Cover, 15. Bolt;

[0065] Cover connecting part 111, first cover surface 1111, first region 1111a, second region 1111b, notch 1112, second cover surface 1113, folding part 1114, inner wall of folding part 1114a, outer wall of folding part 1114b, first corner B1;

[0066] Box connecting part 121, first box surface 1211, second box surface 1212, box side wall 122, first box side wall 1221, second box side wall 1222, second corner B2, dividing line 1213.

[0067] First shielding part 141, second shielding part 142, third shielding part 143;

[0068] First gap C1; second gap C2; third gap C3. Detailed Implementation

[0069] 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.

[0070] 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.

[0071] 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.

[0072] 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.

[0073] 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.

[0074] 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).

[0075] In the description of the embodiments of this application, the technical terms "center," "width," "thickness," "upper," "lower," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "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.

[0076] In the description of the embodiments of this application, the technical term "inner" refers to the square facing the inside of the battery device, "outer" refers to the direction facing the outside of the battery device, the technical term "inner side" refers to the side facing the inside of the battery device, and "outer side" refers to the side facing the outside of the battery device.

[0077] In the description of the embodiments of this application, unless otherwise expressly specified and limited, the technical terms "installation," "connection," "fixing," etc., 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.

[0078] Currently, judging from market trends, the application of power batteries is becoming increasingly widespread. Power batteries are not only used in energy storage systems such as hydropower, thermal power, wind power, and solar power plants, but also extensively 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 power battery applications, market demand is also constantly increasing.

[0079] The inventors have observed that, with the market's increasing demand for battery energy density, and given a fixed space occupied by the battery pack, efforts are made to maximize the internal space of the battery pack to accommodate more individual battery cells, while minimizing the space between the battery pack and the vehicle body. Therefore, the space between the battery pack and the vehicle body is typically limited. Furthermore, with the market's increasing demand for waterproofing, the battery pack needs to withstand water pressure while maintaining good waterproofing performance. This necessitates the inclusion of waterproof structures to enhance the battery pack's waterproofing. However, these waterproof structures are usually located on the outermost layer of the battery pack's outer casing. As vehicle energy density requirements increase and battery pack installation space becomes increasingly compact, the outer casing of the battery pack, such as the waterproof structure, can easily interfere with the vehicle body.

[0080] Based on the above considerations, in order to solve the problem of interference between the waterproof structure and the vehicle body, the inventors, after in-depth research, designed a battery device. A notch is provided in a portion of the waterproof structure connecting the cover and the casing. This notch avoids interference points, thus solving the problem of interference between the waterproof structure and the vehicle body. However, the notch in the waterproof structure reduces the protective performance of the sealing structure of the cover and casing, consequently reducing the sealing performance of the battery device. Therefore, the inventors installed a shielding component 14 at the notch to cover the gap between the casing and the cover, improving the waterproof performance of the battery device. On the one hand, since the shielding component 14 is located on the upper surface of the casing, it reduces interference between the waterproof structure and the vehicle body outside the casing sidewall. On the other hand, the shielding component 14 is located at the notch, meaning that part of the original cover space is used to accommodate it. The shielding component 14 occupies a small space and is unlikely to significantly affect the overall volume of the battery device.

[0081] The battery cells disclosed in this application can be used, but are not limited to, in electrical devices such as vehicles, ships, or aircraft. A power system for such an electrical device can be constructed using battery cells and batteries disclosed in this application. This helps to mitigate and automatically regulate the deterioration of cell expansion force, replenish electrolyte consumption, and improve the stability of battery performance and battery life.

[0082] 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 vehicles, 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.

[0083] For ease of explanation, the following embodiments will be described using a vehicle 1000 as an example of an electrical device according to an embodiment of this application.

[0084] Please refer to Figure 1 , Figure 1This 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. A battery device 100 is provided 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.

[0085] 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.

[0086] Please refer to Figure 2 , Figure 2 This is an exploded view of a battery device 100 provided in some embodiments of this application. The battery device 100 includes a housing 10 and a battery cell 20, with the battery cell 20 housed within the housing 10. The housing 10 provides a receiving space for the battery cell 20, and the housing 10 can adopt various structures. In some embodiments, the housing 10 may include a cover 11 and a box 12, with the cover 11 and box 12 overlapping each other, jointly defining a receiving space for accommodating the battery cell 20. The box 12 can be a hollow structure with one open end, and the cover 11 can be a plate-like structure, with the cover 11 covering the open side of the box 12 so that the cover 11 and box 12 jointly define the receiving space; alternatively, the cover 11 and box 12 can both be hollow structures with one open side, with the open side of the cover 11 covering the open side of the box 12. Of course, the housing 10 formed by the cover 11 and box 12 can be of various shapes, such as a cylinder, a cuboid, etc.

[0087] In the battery device 100, there can be multiple battery cells 20, which can be connected in series, parallel, or in a mixed manner. A mixed connection means that multiple battery cells 20 are connected in both series and parallel configurations. Multiple battery cells 20 can be directly connected in series, parallel, or in a mixed manner, and then the entire assembly of the multiple battery cells 20 is housed within the housing 10. Alternatively, the battery device 100 can also consist of multiple battery cells 20 first connected in series, parallel, or in a mixed manner to form a battery module, and then multiple battery modules are connected in series, parallel, or in a mixed manner to form a whole, which is also housed within the housing 10. The battery device 100 may also include other structures; for example, it may include a busbar component for electrical connection between the multiple battery cells 20.

[0088] Each battery cell 20 can be a secondary battery or a primary battery; it can also be a lithium-sulfur battery, a sodium-ion battery, or a magnesium-ion battery, but is not limited to these. The battery cell 20 can be cylindrical, flat, cuboid, or other shapes.

[0089] As an example, the battery cell can be a cylindrical battery cell, a prismatic battery cell, a pouch battery cell, a blade-shaped battery cell, a multi-prism battery such as a hexagonal battery, or a battery of other shapes, etc., and this application has no particular limitations.

[0090] Please refer to Figure 3 , Figure 3 This is an exploded structural diagram of a battery cell 20 provided in some embodiments of this application. The battery cell 20 refers to the smallest unit that makes up a battery. Figure 3 The battery cell 20 includes an end cap 21, a housing 22, a cell assembly 23, and other functional components.

[0091] End cap 21 refers to a component that covers the opening of housing 22 to isolate the internal environment of battery cell 20 from the external environment. The shape of end cap 21 can be adapted to the shape of housing 22 to fit it. Optionally, end cap 21 can be made of a material with certain hardness and strength (such as aluminum alloy), so that end cap 21 is not easily deformed under pressure and impact, allowing battery cell 20 to have higher structural strength and improved safety performance. Functional components such as electrode terminals 21a can be provided on end cap 21. Electrode terminals 21a can be used for electrical connection with cell assembly 23 to output or input electrical energy to battery cell 20. In some embodiments, end cap 21 can also be provided with a pressure relief mechanism for releasing internal pressure when the internal pressure or temperature of battery cell 20 reaches a threshold. The material of end cap 21 can also be various, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc., and this application embodiment does not impose special limitations on this. In some embodiments, an insulating element may be provided on the inner side of the end cap 21. The insulating element can be used to isolate the electrical connection components within the housing 22 from the end cap 21 to reduce the risk of short circuits. For example, the insulating element may be made of plastic, rubber, etc.

[0092] The housing 22 is a component used to mate with the end cap 21 to form the internal environment of the battery cell 20. This internal environment can accommodate the cell assembly 23, electrolyte, and other components. The housing 22 and the end cap 21 can be independent components. An opening can be provided on the housing 22, and the end cap 21 closes the opening to form the internal environment of the battery cell 20. Alternatively, the end cap 21 and the housing 22 can be integrated. Specifically, the end cap 21 and the housing 22 can form a common mating surface before other components are inserted into the housing. When it is necessary to encapsulate the interior of the housing 22, the end cap 21 closes the housing 22. The housing 22 can have various shapes and sizes, such as cuboid, cylindrical, or hexagonal prism. Specifically, the shape of the housing 22 can be determined according to the specific shape and size of the cell assembly 23. The housing 22 is used to encapsulate electrode components and electrolytes, among other components. The housing 22 can be made of steel, aluminum, plastic (such as polypropylene), composite metal (such as copper-aluminum composite housing), or aluminum-plastic film, etc. This application embodiment does not impose any special restrictions on this.

[0093] As an example, the housing can be part of the vehicle's chassis structure. For instance, the housing cover 11 can be at least part of the vehicle's floor, or the housing can be at least part of the vehicle's crossbeams and longitudinal beams.

[0094] 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.

[0095] 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.

[0096] 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.

[0097] As an example, the battery cell assembly can be a battery module, which can be housed in the housing by fixing the battery module in the housing.

[0098] As an example, battery cell assemblies can also be housed in a housing by directly fixing multiple battery cells to the housing.

[0099] The cell assembly 23 is the component in a single battery cell where electrochemical reactions occur. The casing 22 may contain one or more cell assemblies 23. The cell assembly 23 is mainly formed by winding or stacking positive and negative electrode plates, and typically a separator is provided between the positive and negative electrode plates. The portions of the positive and negative electrode plates containing active material constitute the main body of the cell assembly, while the portions of the positive and negative electrode plates without active material each constitute a tab 23a. The positive and negative tabs may be located together at one end of the main body or separately at both ends of the main body. During the charging and discharging process of the battery, the positive and negative active materials react with the electrolyte, and the tabs 23a connect to the electrode terminals to form a current loop.

[0100] According to some embodiments of this application, refer to Figures 4 to 14 This application provides a battery device, including: a housing 12 and a cover 11. The housing 12 includes a housing connecting portion 121; the cover 11 includes a cover connecting portion 111. The cover 11 covers the housing 12, and the cover connecting portion 111 is disposed opposite to and connected to the housing connecting portion 121 to form a space for accommodating a single battery cell. The housing connecting portion 121 includes a first housing surface 1211 opposite to the cover connecting portion 111 and a second housing surface 1212 adjacent to the first housing surface 1211; the cover connecting portion 111 includes a first cover surface opposite to the first housing surface 1211. 1111; The cover connecting part 111 forms a notch 1112 at a position opposite to the second box surface 1212; At the notch 1112, a first gap C1 is formed between the first box surface 1211 and the first cover surface 1111, and the opening of the first gap C1 faces the notch 1112; The shielding member 14 includes a first shielding part 141, which is disposed at the notch 1112 and is fixedly connected to at least one of the box connecting part 121 or the cover connecting part 111, and the first shielding part 141 is used to shield the first gap C1.

[0101] In some embodiments, the housing 12 and the cover 11 enclose the outer casing of the battery device. The outer casing contains a space for accommodating individual battery cells. The outer casing can be polyhedral, such as tetrahedron, pentahedron, hexahedron, etc. Those skilled in the art can design the housing 12 to a suitable shape as needed. When the housing 12 is hexahedron, it can be cubic, such as a cuboid or cube.

[0102] In some embodiments, the housing 12 has an internal cavity for accommodating individual battery cells. The housing 12 may be rectangular, cubic, or other suitable shapes. The housing 12 has an opening through which individual battery cells are placed into the cavity within the housing 12.

[0103] In some embodiments, the cover 11 can be fastened to the box 12 to close the opening of the box 12, and the outer periphery of the cover 11 and the outer periphery of the box 12 are fixedly connected. The cover 11 can be in the form of a cuboid, a cube, or other suitable shape.

[0104] In some embodiments, the cover connecting portion 111 is a structure on the cover 11 for connecting with the housing 12. Typically, the cover connecting portion 111 is located in the outer peripheral edge region of the cover 11, and the cover connecting portion 111 is arranged in a ring shape. For example... Figure 4 and Figure 5 As shown, when the cover 11 is rectangular, the cover connecting part 111 is rectangular.

[0105] In some embodiments, such as Figure 4 and Figure 5 As shown, when the box body 12 is rectangular, the box body connecting part 121 is rectangular.

[0106] In some embodiments, the housing connecting portion 121 and the cover connecting portion 111 are disposed opposite to each other and connected. The connection method between the housing connecting portion 121 and the cover connecting portion 111 can be bolt connection, riveting connection, or other suitable connection method. In some embodiments, such as Figure 4 As shown, the cover 11 and the box 12 are connected by a plurality of bolts 15, which are spaced apart around the circumference of the cover 11.

[0107] like Figure 6 As shown, the side of the box body connecting part 121 facing the cover connecting part 111 is the surface of the box body 12, as shown in the figure. Figure 9 , Figure 10 and Figure 11 As shown, the surface of the housing 12 includes a first housing surface 1211 opposite to the cover connection portion 111, and a second housing surface 1212 adjacent to the first housing surface 1211, with the second housing surface 1212 located outside the first housing surface 1211. Figure 11 As shown in the figure, the boundary line 1213 indicated by the dashed line is the boundary between the first housing surface 1211 and the second housing surface 1212.

[0108] In some embodiments, a notch 1112 is provided on the cover 11 in a region opposite to the surface 1212 of the second housing. The notch 1112 is also provided in a portion of the circumferential direction along the cover connection portion 111. The notch 1112 can be triangular, rectangular, arc-shaped, or other suitable shapes. Figure 7 and Figure 8As shown, when the cover connecting portion 111 is rectangular, and the notch 1112 is located at the first corner B1 of the cover connecting portion 111, the notch 1112 can be triangular, L-shaped, or other suitable shapes. Along the direction from the inside of the housing 12 towards the outside of the housing 12, the outer edge of the cover connecting portion 111 is located inside the outer edge of the housing connecting portion 121. In some embodiments, at the notch 1112, the width of the cover connecting portion 111 is smaller than the width of the housing connecting portion 121, where the width refers to the dimension along the direction from the inside of the housing 12 towards the notch 1112.

[0109] In some embodiments, after the housing connecting portion 121 and the cover connecting portion 111 are connected, there will inevitably be a gap between the housing connecting portion 121 and the cover connecting portion 111. Specifically, at the notch 1112, a gap is formed between the first housing surface 1211 and the first cover surface 1111. The opening of the first gap C1 faces the notch 1112, that is, the gap between the first cover surface 1111 and the first housing surface 1211 adjacent to the notch 1112 is the first gap C1. The first gap C1 will affect the waterproof performance of the battery device. The waterproof performance of the battery device can be improved by adding a shielding member 14.

[0110] In some embodiments, a plurality of notches 1112 are provided circumferentially along the cover connection portion 111, and the plurality of notches 1112 can be provided at intervals. For example, the cover connection portion 111 is rectangular, and notches 1112 are provided at the corners of the rectangular cover connection portion 111, and a blocking member 14 is provided at the corresponding notch 1112. In short, the notches 1112 can be provided at the required positions, and providing a blocking member 14 at the notch 1112 can improve the waterproof performance at the notch 1112.

[0111] The battery device provided in this embodiment improves the waterproof performance of the battery device by providing a notch 1112 on the cover connection portion 111 and a shielding member 14 at the notch 1112. The shielding member 14 covers the first gap C1 corresponding to the notch 1112. When water is sprayed into the first gap C1, the shielding member 14 is located outside the first gap C1, blocking the water from entering the first gap C1 and reflecting the water to a certain extent, thus preventing the water from entering the first gap C1.

[0112] The battery device provided in this embodiment has the following advantages: (1) A notch 1112 is provided on the cover connection 111 to make room for the shielding member 14. The shielding member 14 occupies a small volume and is located above the side wall 122 of the box, so it is not easy to interfere with the side wall 122 of the box; (2) The shielding member 14 is located at the notch 1112, that is, the space occupied by the shielding member 14 is the original space of the cover connection 111. Therefore, it is not easy to increase the overall volume of the battery device after adding the shielding member 14.

[0113] According to some embodiments of this application, optionally, please continue to refer to Figures 7 to 8 The cover connecting part 111 has a first corner B1, and the notch 1112 is located at the first corner B1 of the cover connecting part 111.

[0114] In some embodiments, the first corner B1 refers to a place where there is a bend in the outer contour of the cover connecting part 111. For example, when the cover connecting part 111 is rectangular, the first corner B1 is the four corners of the rectangle.

[0115] In some embodiments, when the cover connecting portion 111 is rectangular, it has four first corners B1. A notch 1112 can be provided at any one of the first corners B1, and a blocking member 14 can be provided at the notch 1112; or a notch 1112 can be provided at two of the first corners B1, and a blocking member 14 can be provided at the notch 1112; or a notch 1112 can be provided at three of the first corners B1, and a blocking member 14 can be provided at the notch 1112; or a notch 1112 can be provided at all four first corners B1, and a blocking member 14 can be provided at the notch 1112. Those skilled in the art can set the number of notches 1112 and the corresponding number of blocking members 14 as needed.

[0116] In one example, the cover connection 111 has four first corners B1, each first corner B1 has a notch 1112, and each notch 1112 has a shield 14, thereby waterproofing the four corners of the battery device and improving the sealing performance of the four corners of the battery device. At the same time, the shield 14 does not occupy the space of the side wall 122 of the box, reducing the interference with the side wall of the box.

[0117] The inventors discovered that the space at the corner of the battery device is limited, which imposes high requirements on the size of the battery device. This application provides a notch 1112 at the first corner B1 of the cover connection 111, which can reduce the interference between the battery device and the vehicle body at the first corner B1 and reduce the space occupied by the battery device at the first corner B1.

[0118] In other embodiments of this application, optionally, a notch 1112 may be provided at the non-corner part of the cover connection portion 111, and a corresponding shielding member 14 may be provided.

[0119] The position of the notch 1112 can be set according to the space requirements of the battery device. When the space requirement of a certain part of the battery device is high, that is, when the space of the side wall 122 of the box cannot be occupied, the notch 1112 can be set on the cover connection part 111 at the corresponding location.

[0120] According to some embodiments of this application, optionally, such as Figure 5 As shown, a sealing gasket 13 is provided between the cover connecting part 111 and the box connecting part 121. The sealing gasket 13 is arranged along the circumference of the cover connecting part, and the first blocking part 141 blocks the portion of the sealing gasket 13 located in the first gap C1.

[0121] The sealing gasket 13 refers to the structure that can seal the connection between the cover connecting part 111 and the box connecting part 121. The sealing gasket 13 is usually flexible and can be compressed. For example, the sealing gasket 13 can be a rubber gasket or a sponge gasket.

[0122] In some embodiments of this application, the sealing gasket 13 is sandwiched between the cover connecting portion 111 and the box connecting portion 121, and the box connecting portion 121 and the cover connecting portion 111 press the sealing gasket 13 together to seal the first gap C1 between the box connecting portion 121 and the cover connecting portion 111.

[0123] This embodiment further improves the waterproof performance of the battery device by providing a sealing gasket 13 between the cover connection portion 111 and the box connection portion 121.

[0124] In some embodiments, when the waterproof performance of the battery device is tested using a high-pressure water flow test (e.g., waterproof requirements of IPX6K and above), a small gap may be generated between the flexible sealing gasket 13 and the cover connection portion 111 (specifically, the connection surface between the sealing gasket 13 and the first cover 11) under the impact of the high-pressure water flow. Water may penetrate into the battery device, causing the battery device to fail to meet the high-level waterproof requirements.

[0125] As an improvement, in this embodiment, a sealing gasket 13 is provided between the cover connecting part 111 and the box connecting part 121 to seal the first gap C1. Then, the shielding member 14 blocks the first gap C1 from the outer edge of the cover connecting part 111, covering the area where a small gap may occur between the sealing gasket 13 and the first cover surface 1111 of the cover connecting part 111. This area is not easily affected by water flow under the shielding member 14, so it is not easy for gaps to occur, thereby reducing the possibility of water flow penetrating into the battery device, so that the battery device can meet the high level of waterproof requirements.

[0126] In some embodiments of the application, optionally, the first shielding part 141 is fixedly connected to the surface 1212 of the second housing, and the first shielding part 141 extends toward the cover connecting part 111. Specifically, the first shielding part 141 can be fixed to the surface 1212 of the second housing by means of bonding, riveting, bolt 15 connection or other methods.

[0127] The above technical solution allows the shielding member 14 to be fixedly mounted on the surface 1212 of the second housing. The first shielding portion 141 extends from the surface 1212 of the second housing to the cover connecting portion 111, covering the first gap C1 between the surface 1211 of the first housing and the surface 1111 of the first cover. This solution facilitates the installation of the shielding member 14 and does not occupy additional space.

[0128] In some embodiments of the application, optionally, the first shielding part 141 is fixedly connected to the cover connecting part 111, and the first shielding part 141 extends toward the second housing surface 1212. Specifically, the first shielding part 141 can be fixed to the cover connecting part 111 by means of bonding, riveting, bolt 15 connection, etc.

[0129] Through the above technical solution, the first shielding part 141 can be fixedly installed on the cover connecting part 111. The first shielding part 141 extends from the cover connecting part 111 toward the second box surface 1212, covering the first gap C1 between the first box surface 1211 and the first cover surface 1111. This solution facilitates the installation of the shielding part 14 and does not occupy additional space.

[0130] In some embodiments of the application, optionally, the first shielding part 141 is fixedly connected to both the housing connecting part 121 and the cover connecting part 111. Specifically, the first shielding part 141 can be fixedly connected to both the housing connecting part 121 and the cover connecting part 111 by means of bonding, riveting, bolts 15, etc.

[0131] Through the above technical solution, the first shielding part 141 can be connected to the cover connecting part 111 and the box connecting part 121 respectively, and the first shielding part 141 extends from the cover connecting part 111 toward the box connecting part 121, covering the first gap C1 between the first box surface 1211 and the first cover surface 1111. This solution facilitates the installation of the shielding part 14 and does not occupy additional space. The two ends of the first shielding part 141 are fixedly connected to the cover connecting part 111 and the box connecting part 121 respectively, which can more firmly fix it to the outer shell of the battery device and reduce the risk of the shielding part 14 falling off.

[0132] Some embodiments of this application can reduce the phenomenon of the shielding member 14 falling off under the impact of high-pressure water flow by fixing the shielding member 14 on the cover connecting part 111 and / or the box connecting part 121.

[0133] In some embodiments of the application, optionally, the cover connecting portion 111 includes a second cover surface 1113, the second cover surface 1113 being disposed on the side of the cover 11 away from the first box surface 1211; the first blocking portion 141 extends to be flush with the second cover surface 1113, or the first blocking portion 141 extends to protrude from the second cover surface 1113.

[0134] Specifically, such as Figure 6 As shown, along the thickness direction of the cover connection portion 111, the second cover surface 1113 is located on the side of the cover connection portion 111 away from the first box surface 1211; the second cover surface 1113 is Figure 6 The upper surface of the cover connecting portion 111. The first blocking portion 141 can block the first gap C1 corresponding to the notch 1112, for example, the first blocking portion 141 extends to be at least flush with the surface 1111 of the first cover.

[0135] In some embodiments of the application, the first shielding portion 141 may optionally extend to be flush with the surface 1113 of the second cover.

[0136] Through the above technical solution, the first shielding part 141 is flush with the surface 1113 of the second cover, and the first shielding part 141 can extend beyond the surface 1111 of the first cover by a certain distance (approximately the wall thickness of the cover connecting part 111), thus blocking the first gap C1 between the surface 1211 of the first housing and the surface 1111 of the first cover, reducing the phenomenon of high-pressure water flowing into the battery device through the first gap C1. When a sealing gasket 13 is provided in the first gap C1, the second shielding part 142 blocks the area where a small gap may be generated between the sealing gasket 13 and the surface 1111 of the first cover under the impact of high-pressure water, reducing the phenomenon of high-pressure water flowing into the battery device through the gap between the sealing gasket 13 and the surface 1111 of the first cover, ensuring waterproof performance. The first shielding part 141 makes full use of the space at the notch 1112, does not extend beyond the surface 1113 of the second cover, and does not easily increase the volume of the battery device.

[0137] In some embodiments of the application, the first shielding portion 141 may optionally extend to protrude from the surface 1113 of the second cover.

[0138] Through the above technical solution, the first shielding part 141 has a large shielding area and a good water-blocking effect. In addition, when the second cover surface 1113 is not the most protruding part on the cover surface 11, or in other words, when there is a certain space above the second cover surface 1113 of the first cover connecting part 111, the first shielding part 141 extends to protrude from the second cover surface 1113, which can achieve a better waterproof effect and at the same time does not easily increase the size of the battery device.

[0139] In some embodiments of the application, optionally, such as Figure 12 and Figure 14 As shown, the shielding member 14 also includes a second shielding part 142, which is fixedly connected to the side of the first shielding part 141 facing the first gap C1, and the second shielding part 142 extends into the first gap C1; the sealing gasket 13 is located inside the second shielding part 142.

[0140] The second blocking part 142 is used to block the first gap C1. The first blocking part 141 is provided according to the shape of the first gap C1 to be filled, and can be triangular (e.g., Figure 14 As shown), various suitable shapes such as arcs are used. Generally, the shape of the second blocking part 142 is adapted to the shape of the notch 1112 and the shape of the first gap C1.

[0141] In some embodiments of the application, optionally, the thickness of the second shielding portion 142 may be less than the thickness of the first gap C1. In this embodiment, the thickness refers to the dimension of the first gap C1 in the direction perpendicular to the second housing surface 1212. When a sealing gasket 13 is provided in the first gap C1, the second shielding portion 142 is less than the thickness of the first gap C1, which can reduce the risk of the second shielding portion 142 lifting the second cover surface 1113. The cover connecting portion 111 can press the sealing gasket 13 well onto the housing connecting portion 121 to ensure a sealing effect.

[0142] In some embodiments of the application, optionally, the thickness of the second shielding part 142 may also be equal to the thickness of the first gap C1. In this case, the upper surface of the second shielding part 142 is exactly in contact with the surface 1113 of the second cover, and the lower surface of the second shielding part 142 is in contact with the surface 1212 of the second box.

[0143] Through the above technical solution, the first shielding part 141 fills the first gap C1, blocking the space between the sealing gasket 13 and the first shielding part 141, further preventing water from entering the sealing gasket 13 and improving waterproof performance. In addition, the second shielding part 142 also serves to support the first shielding part 141. When the second shielding part 142 is pressed or bonded between the surface 1211 of the first housing and the surface 1111 of the first cover, the second shielding part 142 also serves to fix the first shielding part 141 to the battery device.

[0144] In some embodiments of the application, specifically, the second shielding portion 142 is pressed between the first housing surface 1211 and the first cover surface 1111.

[0145] Through the above technical solution, one side of the second shielding part 142 can contact the surface 1211 of the first box, and the other side of the second shielding part 142 can contact the surface 1111 of the first cover. The second shielding part 142 is sandwiched between the cover connecting part 111 and the box connecting part 121, thereby achieving a fixed connection between the second shielding part 142 and the cover connecting part 111 and the box connecting part 121. Through the fixed connection between the second shielding part 142 and the cover connecting part 111 and the box connecting part 121, the fixed connection between the first shielding part 141 and the cover connecting part 111 and the box connecting part 121 is indirectly achieved, reducing the phenomenon of the shielding part 14 falling off the box 12.

[0146] In some embodiments of the application, optionally, the rigidity of the shield 14 is greater than the rigidity of the sealing gasket 13.

[0147] Rigidity refers to the ability of an object or material to resist changes in shape (deformation) when subjected to external forces (such as tension, compression, and torsion). The greater the material's resistance to deformation, the greater its rigidity.

[0148] In some embodiments of this application, the material of the shielding member 14 may be a rigid plastic material. Specifically, the material of the first shielding part 141 may be a rigid plastic material, and the material of the second shielding part 142 may be a rigid plastic material.

[0149] In some embodiments of the application, optionally, the rigidity of the second shielding part 142 is greater than that of the sealing gasket 13, making the shielding member 14 more impact-resistant than the sealing gasket 13. Under the impact of high-pressure water flow, the second shielding part 142 is not easily deformed or displaced, and even under the impact of high-pressure water flow, it is not easy for a gap to form between it and the surface 1111 of the first cover, ensuring good waterproof performance. In addition, the rigid second shielding part 142 is pressed between the surface 1211 of the first housing and the surface 1111 of the first cover, realizing a rigid connection between the shielding member 14 and the surface 1211 of the first housing and the surface 1111 of the first cover, ensuring a reliable connection.

[0150] In some embodiments of the application, optionally, the second shielding portion 142 is bonded to the surface 1211 of the first housing; and / or, the second shielding portion 142 is bonded to the surface 1212 of the second housing.

[0151] In some embodiments of the application, the second shielding portion 142 is optionally bonded to the surface 1211 of the first housing.

[0152] Through the above technical solution, the second shielding part 142 can be first bonded to the surface 1211 of the first box, and then the cover connecting part 111 can be pressed towards the box connecting part 121, so that the cover connecting part 111 and the box connecting part 121 are connected, and the shielding part 14 is fixed on the box connecting part 121.

[0153] In some embodiments of the application, the second shielding portion 142 is optionally bonded to the second housing surface 1212.

[0154] Through the above technical solution, the second shielding part 142 can be first bonded to the surface 1211 of the first housing, and then the cover connecting part 111 can be pressed towards the housing connecting part 121, thereby connecting the cover connecting part 111 and the housing connecting part 121 while fixing the shielding part 14 to the housing connecting part 121. In this solution, the second shielding part 142 of the shielding part 14 is bonded to the housing 12, further enhancing the firmness of the shielding part 14. In addition, the shielding part 14 can be pre-bonded to the housing 12 and supplied together with the housing 12, enabling rapid assembly of the cover 11 and the housing 12.

[0155] In some embodiments of the application, optionally, the second shielding portion 142 is bonded to the surface 1211 of the first housing; and the second shielding portion 142 is bonded to the surface 1212 of the second housing.

[0156] Through the above technical solution, the side of the second shielding part 142 facing the cover 11 is bonded and fixed to the cover connecting part 111, and the side of the second shielding part 142 facing the box 12 is bonded and fixed to the box connecting part 121, which further improves the firmness of the second shielding part 142.

[0157] Specifically, double-sided adhesive can be provided on the side of the second shielding part 142 facing the cover connecting part 111 to achieve the connection between the second shielding part 142 and the cover connecting part 111.

[0158] Double-sided adhesive is applied to the side of the second shielding part 142 facing the box body connecting part 121 to achieve the connection between the second shielding part 142 and the box body connecting part 121.

[0159] Double-sided adhesive tape is applied to the side of the second shielding part 142 facing the cover connecting part 111 and the side of the second shielding part 142 facing the box connecting part 121, respectively, so that it can be fixedly connected to either the box connecting part 121 or the cover connecting part 111, thereby enhancing the reliability of the connection. The second shielding part 142 can be first adhered to one of the cover connecting part 111 or the box connecting part 121. When the cover connecting part 111 and the box connecting part 121 are fastened together, the cover connecting part 111, the shielding part 14, and the box connecting part 121 are fixedly connected.

[0160] In some embodiments of this application, when the second shielding part 142 is bonded to the housing connecting part 121 and / or the cover connecting part, and the second shielding part 142 is also pressed between the housing connecting part 121 and the cover connecting part 111, the second shielding part 142 can better seal and connect the housing connecting part 121 and the cover connecting part 111, resulting in a tight seal and high reliability.

[0161] The inventors noted that if the second shielding part 142 comes into contact with or presses against the sealing gasket 13, it may cause deformation of the sealing gasket 13, thereby affecting the waterproof performance of the sealing gasket 13.

[0162] Therefore, as an improvement, in some embodiments of the application, specifically, the portion of the sealing gasket 13 located in the first gap C1 is spaced apart from the second blocking portion 142. That is, the second blocking portion 142 does not easily come into contact with the sealing gasket 13.

[0163] Specifically, when the sealing gasket 13 is annular, the portion of the sealing gasket 13 located in the first gap C1 and the second shielding portion 142 are spaced apart along the first direction, which is the direction from the center of the sealing gasket 13 toward the notch 1112.

[0164] Through the above technical solution, a gap is maintained between the sealing gasket 13 and the second shielding part 142, the second shielding part 142 is not easy to come into contact with the sealing gasket 13, and is not easy to affect the sealing performance of the sealing gasket 13. The sealing gasket 13 and the second shielding part 142 perform their respective waterproof performance.

[0165] In some embodiments of the application, optionally, along the circumferential direction of the cover connection portion 111, such as Figure 8 As shown, the surface 1111 of the first cover includes a first region 1111a corresponding to the notch 1112 and a second region 1111b without the notch 1112; combined with Figure 6 and Figure 13 The first region 1111a forms a first gap C1 with the first box surface 1211, and the second region 1111b forms a second gap C2 with the first box surface 1211; the second region 1111b is connected to a folding part 1114, which folds towards the box connecting part 121 to cover the second gap C2.

[0166] The folding portion 1114 can be a flanged structure, bending from the edge of the cover connecting portion 111 toward the side wall 122 of the box. Figure 12 The arc shape shown. The folding part 1114 can be integrally formed on the cover 11.

[0167] The folding part 1114 covers a portion of the side wall 122 of the box body, and the folding part 1114 overlaps with the side wall 122 of the box body to a certain extent, thereby covering the second gap C2.

[0168] Through the above technical solution, when the space outside the side wall of the housing 12 can accommodate the folding part 1114, the folding part 1114 can be provided in the second region 1111b to cover the second gap C2. When the space outside the side wall of the housing 12 cannot accommodate the folding part 1114, a notch 1112 can be provided on the cover connection part 111 and a shielding member 14 can be added to cover the first gap C1. This solution can flexibly set the folding part 1114 or the shielding member 14 according to the space. Through the combination of the folding part 1114 and the shielding member 14, the requirements for waterproof performance are met while satisfying the space design requirements of the battery device.

[0169] In some embodiments of this application, the second region 1111b may also be provided with other structures that can cover the second gap C2.

[0170] In some embodiments of the application, optionally, such as Figure 12 As shown, the folding portion 1114 includes an inner wall 1114a of the folding portion 1114 near the second gap C2 and an outer wall 1114b of the folding portion away from the second gap C2, and the first blocking portion 141 extends to at least cover the inner wall 1114a of the folding portion 1114.

[0171] By using the above technical solution, the first shielding part 141 extends to at least cover the inner wall of the folded part 1114, shielding the gap between the inner wall 1114a of the folded part 1114 and the sealing gasket 13, thereby further improving the waterproof performance.

[0172] In some embodiments of this application, the folding portion 1114 extends to cover the side wall 122 of the housing, and the side wall 122 intersects with the surface 1211 of the first housing; such as Figure 6 and Figure 12 As shown, there is a third gap C3 between the folding part 1114 and the side wall 122 of the box. The shielding part 14 also includes a third shielding part 143 connected to the first shielding part 141. The third shielding part 143 is used to shield the third gap C3.

[0173] The third shielding part 143 may be plate-shaped, attached to the end face of the folding part 1114 and abutting against the side wall 122 of the box body, covering the gap between the end face of the folding part 1114 and the side wall 122 of the box body. The third shielding part 143 extends from the surface 1212 of the second box body toward the side wall of the box body 12.

[0174] The gap between the end face of the folding part 1114 and the side wall 122 of the box can be a narrow strip, and the third shielding part 143 can be a long and thin strip.

[0175] Through the above technical solution, a third shielding part 143 is connected to the first shielding part 141. The third shielding part 143 is used to shield the third gap C3 between the folding part 1114 and the side wall 122 of the box, which further improves the waterproof performance of the battery device.

[0176] In some embodiments of this application, the first shielding part 141, the second shielding part 142 and the third shielding part 143 can be integrally formed. For example, the shielding part 14 is made of plastic and is manufactured by injection molding.

[0177] In some embodiments of the application, optionally, such as Figure 6 , Figures 11-13 As shown, the side wall 122 of the box includes a first side wall 1221 and a second side wall 1222. The first side wall 1221, the second side wall 1222, and the first box surface 1211 intersect to form a second corner B2 of the box 12. A third gap C3 is provided between the folding part 1114 and the first side wall 1221, and between the folding part 1114 and the second side wall 1222. Figure 12 and Figure 14 As shown, the shielding member 14 at each second corner B2 includes two third shielding parts 143, each third shielding part 143 shielding a third gap C3.

[0178] Through the above technical solution, two third shielding parts 143 are provided at the second corner B2 of the housing 12, and each third shielding part 143 shields a third gap C3, so that the third gaps C3 on both sides of the second corner B2 are covered, which further improves the waterproof performance of the battery device.

[0179] In some embodiments of the application, optionally, such as Figure 6 and Figure 12 As shown, the two third blocking parts 143 and the first blocking part 141 form a U-shaped snap-fit ​​structure, and the U-shaped snap-fit ​​structure snaps into the second corner B2 of the housing 12.

[0180] Through the above technical solution, the two third blocking parts 143 and the first blocking part 141 form a U-shaped snap-fit ​​structure. The two third blocking parts 143 can not only cover the third gap C3 on both sides of the box body 12, but also play a connecting role, snap-fitting and fixing the blocking part 14 to the second corner B2 of the box body 12.

[0181] According to some embodiments of this application, see Figures 4 to 14This application provides a battery device, which includes a housing 12 and a cover 11. The housing 12 is a cube with an open top, and the cover 11 covers the opening of the housing 12. The cover 11 and the housing 12 cooperate to form a space for accommodating a single battery cell. The housing 12 includes a housing connecting portion 121, and the cover 11 includes a cover connecting portion 111. The cover connecting portion 111 and the housing connecting portion 121 are opposite to and connected to each other. Both the cover connecting portion 111 and the housing connecting portion 121 are rectangular. A sealing gasket 13 is provided between the cover connecting portion 111 and the housing connecting portion 121. The sealing gasket 13 is arranged along the circumference of the cover connecting portion. The cover connecting portion 111, the sealing gasket 13 and the housing connecting portion 121 are connected by bolts 15. The housing connecting portion 121 includes a first housing surface 1211 opposite to the cover connecting portion 111 and a second housing surface 1212 adjacent to the first housing surface 1211; the cover connecting portion 111 includes a first cover surface 1111 opposite to the first housing surface 1211, and the cover connecting portion 111 also includes a second cover surface 1113, which is disposed on the side of the cover 11 away from the first housing surface 1211; the cover connecting portion 111 forms a notch 1112 at a position opposite to the second housing surface 1212; Along the circumferential direction of the cover connection portion 111, the first cover surface 1111 includes a first region 1111a corresponding to the notch 1112 and a second region 1111b without the notch 1112; the first region 1111a forms a first gap C1 with the first housing surface 1211 (that is, at the notch 1112, a first gap C1 is formed between the first housing surface 1211 and the first cover surface 1111, and the opening of the first gap C1 faces the notch 1112), and the second region 1111b forms a second gap C2 with the first housing surface 1211. A blocking member 14 is provided at the notch 1112, and the rigidity of the blocking member 14 is greater than the rigidity of the sealing gasket 13. The shielding component 14 includes a first shielding portion 141, a second shielding portion 142, and a third shielding portion 143. The first shielding portion 141 is bonded to the housing connecting portion 121 or the cover connecting portion 111. The first shielding portion 141 is fixedly connected to the second housing surface 1212 and extends towards the cover connecting portion 111 until it is flush with the second cover surface 1113. The first shielding portion 141 shields the first gap C1. The second shielding portion 142 is fixedly connected to the side of the first shielding portion 141 facing the first gap C1 and extends into the first gap C1. The sealing gasket 13 is located inside the second shielding portion 142. The second shielding portion 142 is pressed between the first housing surface 1211 and the first cover surface 1111. The second shielding portion 142 is bonded to the first housing surface 1211 and the second housing surface 1212. The portion of the sealing gasket 13 located in the first gap C1 is spaced apart from the second shielding portion 142.The second region 1111b is connected to a folding portion 1114, which folds towards the housing connection portion 121 to cover the second gap C2. The folding portion 1114 includes an inner wall 1114a near the second gap C2 and an outer wall 1114b away from the second gap C2. The first blocking portion 141 extends to at least cover the inner wall 1114a of the folding portion 1114. A third gap C3 exists between the folding portion 1114 and the housing side wall 122. The blocking member 14 also includes a third blocking portion 143 connected to the first blocking portion 141, which blocks the third gap C3. The folding portion 1114 extends to cover the side wall 122 of the box body. The side wall 122 includes a first side wall 1221 and a second side wall 1222. The first side wall 1221, the second side wall 1222, and the first box surface 1211 intersect to form the second corner B2 of the box body 12. There is a third gap C3 between the folding portion 1114 and the first side wall 1221, and between the folding portion 1114 and the second side wall 1222. There are two third blocking portions 143, each blocking one third gap C3. The two third blocking portions 143 and the first blocking portion 141 form a U-shaped snap-fit ​​structure, which snaps into the second corner B2 of the box body 12.

[0182] This application also provides an electrical device that includes the aforementioned battery device for providing electrical energy.

[0183] The electrical device provided in this application has good waterproof performance and the waterproof structure occupies less space, reducing interference with the side wall 122 of the enclosure.

[0184] 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 enclosure includes a enclosure connecting part; The cover includes a cover connecting part, which is disposed opposite to and connected to the box connecting part to form a space for accommodating a single battery cell; The box body connecting part includes a first box body surface opposite to the cover connecting part and a second box body surface adjacent to the first box body surface; The cover connecting portion includes a first cover surface opposite to the first box surface; the cover connecting portion forms a notch at a position opposite to the second box surface; at the notch, a first gap is formed between the first box surface and the first cover surface, and the opening of the first gap faces the notch; A shielding component, comprising a first shielding portion disposed at the notch, the first shielding portion being fixedly connected to at least one of the housing connecting portion or the cover connecting portion, the first shielding portion being used to shield the first gap.

2. The battery device as claimed in claim 1, characterized in that, The cover connection has a first corner, and the notch is located at the first corner.

3. The battery device as claimed in claim 1, characterized in that, A sealing gasket is provided between the cover connecting part and the box connecting part. The sealing gasket is arranged circumferentially along the cover connecting part, and the first shielding part shields the portion of the sealing gasket located in the first gap.

4. The battery device as claimed in claim 3, characterized in that, The first shielding part is fixedly connected to the surface of the second housing, and the first shielding part extends toward the cover connecting part; or, The first shielding part is fixedly connected to the cover connecting part, and the first shielding part extends toward the surface of the second housing; or... The first shielding part is fixedly connected to both the box body connecting part and the cover connecting part.

5. The battery device as claimed in claim 4, characterized in that, The cover connecting portion includes a second cover surface, which is disposed on the side of the cover away from the first box surface; The first shielding portion extends to be flush with the surface of the second cover, or the first shielding portion extends to protrude from the surface of the second cover.

6. The battery device as claimed in claim 3, characterized in that, The shielding member further includes a second shielding part, which is fixedly connected to the side of the first shielding part facing the first gap, and the second shielding part extends into the first gap; The sealing gasket is located inside the second shielding part.

7. The battery device as claimed in claim 6, characterized in that, The second shielding part is pressed between the surface of the first box and the surface of the first cover.

8. The battery device as claimed in claim 7, characterized in that, The rigidity of the shielding component is greater than that of the sealing gasket.

9. The battery device as claimed in claim 6, characterized in that, The second shielding portion is bonded to the surface of the first housing; and / or, the second shielding portion is bonded to the surface of the second housing.

10. The battery device as claimed in claim 6, characterized in that, The portion of the sealing gasket located in the first gap has a gap with the second shielding portion.

11. The battery device according to any one of claims 1-10, characterized in that, Along the circumferential direction of the cover connection portion, the surface of the first cover includes a first region corresponding to the notch and a second region without the notch; the first region forms the first gap with the surface of the first box, and the second region forms a second gap with the surface of the first box; The second region is connected to a folding part, which folds towards the housing connection part to cover the second gap.

12. The battery device as claimed in claim 11, characterized in that, The folding portion includes an inner wall of the folding portion near the second gap and an outer wall of the folding portion away from the second gap, and the first shielding portion extends to at least cover the inner wall of the folding portion.

13. The battery device as claimed in claim 11, characterized in that, The folding portion extends to cover the side wall of the box, and the side wall of the box intersects with the surface of the first box; There is a third gap between the folding part and the side wall of the box, and the shielding member also includes a third shielding part connected to the first shielding part, the third shielding part being used to shield the third gap.

14. The battery device as claimed in claim 13, characterized in that, The sidewall of the box includes a first sidewall and a second sidewall, and the first sidewall, the second sidewall and the surface of the first box intersect to form the second corner of the box; There is a third gap between the folding part and the first box side wall, and between the folding part and the second box side wall; There are two third blocking parts, and each third blocking part blocks one of the third gaps.

15. The battery device as claimed in claim 14, characterized in that, The two third blocking parts form a U-shaped snap-fit ​​structure with the first blocking part, and the U-shaped snap-fit ​​structure snaps into the second corner of the box.

16. An electrical appliance, characterized in that, Includes a battery device as described in any one of claims 1-15, the battery device being used to provide electrical energy.

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