Battery device and electric equipment

Abstract

The utility model discloses a battery device and electric equipment, and relates to the technical field of batteries, the battery device comprises a box body, a battery monomer, a mounting box and a fuse, the box body is provided with an accommodating cavity; the battery monomers are arranged in the accommodating cavities; the mounting box comprises a box body and a cover body covering the box body in an openable and closable manner, the box body is mounted on the box body, the box body is provided with a mounting cavity, the cover body is arranged on the outer side of the box body, and the box body is provided with a through hole communicating the mounting cavity with the accommodating cavity; the fuse is installed on the cover body and located in the installation cavity. The fuse can be maintained or replaced without opening the box body, and the fuse connected with the cover body can be taken out while the cover body is opened, so that the maintenance difficulty is further reduced.

Description

Technical Field

[0001] The present application relates to the field of battery technology, and in particular to a battery device and an electrical equipment. Background Art

[0002] The battery device includes a box body and a fuse, wherein the box body is provided with a receiving cavity, and a battery cell is provided in the receiving cavity. When the fuse needs to be replaced or repaired, the box body needs to be opened, and the repair process consumes manpower and material resources. Utility Model Content

[0003] The main purpose of the present application is to provide a battery device and an electrical device, aiming to at least improve the technical problem that the maintenance of the fuse of the battery device consumes a lot of manpower and material resources.

[0004] According to some embodiments of the present application, the present application provides a battery device, including a case body, a battery cell, a mounting box and a fuse, wherein the case body is provided with a accommodating cavity; the battery cell is arranged in the accommodating cavity; the mounting box includes a box body and a cover body which can be opened and closed on the box body, the box body is installed in the case body, the box body is provided with a mounting cavity, the cover body is arranged on the outside of the case body, and the box body is provided with a through hole connecting the mounting cavity and the accommodating cavity; the fuse is installed on the cover body and is located in the mounting cavity.

[0005] The box body includes an outer shell wall, the outer shell wall is surrounded to form an internal accommodating cavity, and a mounting hole is provided on the shell wall surface of the outer shell wall, and the mounting hole connects the accommodating cavity and the outside atmosphere. A battery cell is arranged in the accommodating cavity, and the number of battery cells can be multiple. The installation box includes a box body and a cover body, the box body is installed in the mounting hole, the box body is provided with a mounting cavity, the cover body covers the opening of the mounting cavity, and the cover body is arranged outside the box body. At the same time, a through hole is arranged on the box body, and the through hole is used to connect the mounting cavity and the accommodating cavity. The specific through hole is arranged at the position where the box body is located in the accommodating cavity. After the installation box is assembled and assembled, when the installation box is affected by factors such as temperature changes, the internal air pressure of the installation box will tend to increase, which not only affects the assembly, but also may cause an explosion risk after the air pressure increases. Therefore, an opening design is made on the side wall of the installation box, and the air pressure inside the installation cavity and the internal air pressure of the accommodating cavity are connected by setting a through hole to achieve air pressure balance, and the explosion-proof valve of the battery device is used to control the overall air pressure to reduce the explosion risk caused by excessive air pressure in the box body. The through hole is provided so that the installation cavity and the accommodating cavity are always in a connected state, and the air pressure balance can be achieved. The through hole is simple to make, and no additional control operation is required during use. The cover body is provided on the outside of the box body, and the cover body is provided on the opening of the box body. The opening of the box body is connected to the accommodating cavity, or it can be said that the opening of the box body is the opening of the accommodating cavity. In this way, the cover body can be opened from the outside of the box body to expose the fuse in the box body, and the fuse can be repaired or replaced without opening the box body, which reduces the difficulty of maintenance. In addition, the fuse is installed on the cover body, so that the fuse can be taken out at the same time when the cover body is opened, which simplifies the fuse removal step and further simplifies the maintenance step.

[0006] By arranging an installation box on the box body, arranging the installation box to include a box body and a cover body that can be opened and closed and installed on the box body, the fuse is installed on the cover body, and the cover body can open the opening of the box body. At the same time, the cover body is arranged outside the box body, so that it is convenient to open the cover body from the outside of the box body, so that the fuse can be repaired or replaced without opening the box body, and the fuse connected to the cover body can be taken out while opening the cover body, further reducing the difficulty of maintenance. In addition, the through hole is arranged so that the installation cavity and the accommodating cavity are always in a connected state, which can achieve air pressure balance, and the through hole is simple to make, and no additional control operation is required during use.

[0007] In some embodiments, the cover body is detachably connected to the box body via threaded fasteners.

[0008] Specifically, connection holes can be set at corresponding positions of the cover body and the box body, and the detachable connection between the cover body and the box body can be achieved by threaded fasteners. As for the number of connection holes and threaded fasteners, the threaded fasteners can be bolts or screws. The nut is set toward the outside of the box body. When the cover body needs to be opened, the bolts or screws are removed, the cover body is taken off the box body, and the fuse installed on the cover body is taken out together. After the maintenance is completed, the cover body is covered on the opening of the box body, and the connection between the cover body and the box body can be achieved by screwing the bolts or screws into the connection holes. As for the number of connection holes and threaded fasteners, those skilled in the art can set them according to actual needs, and this application does not make specific restrictions.

[0009] The cover body and the box body are detachably connected by threaded fasteners, which makes installation and disassembly easy and has good installation firmness.

[0010] In some embodiments, the cover body is provided with a buckle, and the box body is provided with a bayonet; or, the cover body is provided with a bayonet, and the box body is provided with a buckle; the box body and the cover body are engaged with the buckle and the bayonet via the buckle.

[0011] By arranging the cover body and the box body in a connection mode of buckle and bayonet engagement, a detachable connection between the cover body and the box body can be achieved, and both installation and removal are very convenient.

[0012] In some embodiments, a hinge shaft is provided on the box body, and the cover body is rotatably connected to the hinge shaft, so that the cover body can be rotated to open or close the installation cavity.

[0013] By arranging a hinge shaft on the box body, the cover body can open or close the installation cavity by rotating, so that the fuse in the installation cavity can be easily repaired or replaced, and it is convenient to open or close the cover body.

[0014] In some embodiments, the cover body is provided with a stud, and the stud is provided with a threaded hole. The fuse includes a connecting plate and a threaded member, and the threaded member passes through the connecting plate and is installed in the threaded hole to install the fuse on the cover body.

[0015] The fuse is connected to the cover body by arranging a protruding stud on the cover body and extending the threaded hole to a position close to the threaded member.

[0016] In some embodiments, the box body is provided with a mounting hole communicating with the accommodating cavity, the box body is mounted in the mounting hole, and the box body at least partially extends into the accommodating cavity through the mounting hole.

[0017] By arranging a mounting hole in communication with the accommodating cavity on the box body and partially arranging the mounting box in the accommodating cavity through the mounting hole, the volume of the battery device can be reduced.

[0018] In some embodiments, a signal interface is provided in the accommodating cavity, an electrical connector is provided at the end of the fuse away from the cover body, the end of the fuse away from the cover body extends into the accommodating cavity through the through hole, and the electrical connector is plugged into the signal interface along the central axis direction of the box body.

[0019] By arranging the signal interface in the accommodating cavity and the fuse passing through the through hole to be directly electrically connected to the signal interface, the number of connecting components can be reduced. In addition, the electrical connector is plugged into the signal interface along the central axis of the box body, so that the electrical connector and the signal interface can be separated at the same time when the cover is opened.

[0020] In some embodiments, the through hole is arranged to pass through the bottom of the installation cavity, and a gap is arranged between the through hole and the fuse.

[0021] By setting the through hole at the bottom of the cavity, the electrical connector of the fuse can be conveniently connected to the signal interface in the accommodating cavity through the through hole; at the same time, a gap is set between the through hole and the fuse to ensure air circulation between the installation cavity and the accommodating cavity, so that the air pressure between the two is balanced.

[0022] In some embodiments, a signal interface is provided on the box body, and an electrical connector is provided on the fuse, and the electrical connector is plugged into the signal interface along the central axis direction of the box body.

[0023] By setting a signal interface on the box body, the electrical connector on the fuse is electrically connected to the signal interface, and the electrical connector is plugged into the signal interface along the central axis direction of the box body, so that the electrical connector and the signal interface can be easily separated when the cover is opened.

[0024] In some embodiments, the box body at least partially extends into the accommodating cavity.

[0025] By at least partially arranging the box body in the accommodating cavity, it is convenient for the installation cavity of the box body to communicate with the accommodating cavity through the through hole, thereby reducing the risk of explosion. At the same time, the box body partially extends into the accommodating cavity, thereby reducing the volume of the battery device.

[0026] In some embodiments, the box body includes an inner shell and an outer shell, the inner shell includes a base and a side enclosure arranged on the base, the outer shell is sleeved on the side enclosure and connected to the base, the inner shell is provided with the installation cavity, and the cover body is detachably connected to the outer shell.

[0027] By providing the box body with an inner shell and an outer shell, a detachable connection is achieved between the outer shell and the cover body, and a double-layer shell can also be provided to achieve a waterproof effect.

[0028] In some embodiments, a first connection hole is provided on the base, a second connection hole is provided on the housing, and a third connection hole is provided on the cover, and the number of the first connection hole, the second connection hole, and the third connection hole are the same and are provided in one-to-one correspondence;

[0029] The battery device also includes a threaded fastener, which passes through the third connection hole, the second connection hole and the first connection hole in sequence to connect the cover body, the outer shell and the inner shell.

[0030] By setting corresponding holes on the base, outer shell and cover body, a detachable connection between the three is achieved through threaded fasteners, which not only facilitates the installation and removal of the cover body, but also enables the outer shell and inner shell to be detachably connected, making it easy to repair or replace the fuse in the inner shell.

[0031] In some embodiments, a first sealing ring is provided on the abutting surface between the cover and the housing; and / or,

[0032] A second sealing ring is provided on the abutting surface between the base and the housing; and / or,

[0033] A sealing rubber layer is provided at the connection between the shell and the box body.

[0034] By arranging a first sealing ring on the abutting surface between the cover and the shell, arranging a second sealing ring on the abutting surface between the base and the shell, and arranging a sealing rubber layer at the connection between the shell and the box body, both can play a role of waterproofing and dustproofing.

[0035] In some embodiments, a connecting portion is provided on a side of the base facing away from the side wall, and a connecting position to the connecting portion is provided in the box body.

[0036] By providing a connecting portion, the connecting portion extends into the accommodating cavity and is connected with a connecting position in the box body, so that the installation box can be fixedly installed and the risk of the installation box falling off can be reduced.

[0037] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0039] Figure 1 A schematic diagram of the structure of a vehicle according to some embodiments of the present application;

[0040] Figure 2 A schematic diagram of the exploded structure of a battery according to some embodiments of the present application;

[0041] Figure 3 A partial three-dimensional structural schematic diagram of a battery device according to some embodiments of the present application;

[0042] Figure 4 for Figure 3 A schematic diagram of the enlarged structure at A;

[0043] Figure 5 This is a schematic diagram of the exploded structure of the fuse and the mounting box of the battery device in some embodiments of the present application;

[0044] Figure 6 A schematic diagram of a three-dimensional structure of an inner shell of a battery device according to some embodiments of the present application;

[0045] Figure 7 A schematic diagram of a three-dimensional structure of a cover of a battery device according to some embodiments of the present application;

[0046] Figure 8 A schematic cross-sectional structure diagram of a fuse and a mounting box of a battery device according to some embodiments of the present application.

[0047] Description of Figure Numbers:

[0048] 1000. Vehicles;

[0049] 100, battery device; 200, controller; 300, motor;

[0050] 10. Box body; 11. Upper cover; 12. Box body;

[0051] 20. Battery cells;

[0052] 3. Installation box; 31. Box body; 311. Inner shell; 3114. Base; 31141. First connecting hole; 31142. Connecting part; 3115. Side enclosure; 312. Outer shell; 3121. Second connecting hole; 32. Cover body; 321. Third connecting hole; 33. Installation cavity; 34. Through hole; 4. Fuse; 41. Electrical connector; 42. Connector; 421. Connecting plate; 422. Threaded part; 5. Stud; 51. Threaded hole; 6. First sealing ring; 7. Second sealing ring; 8. Threaded fastener.

[0053] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0054] The following will be combined with the drawings in this embodiment to clearly and completely describe the technical solution in this embodiment. Obviously, the described embodiment is only a part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0055] It should be noted that all directional indications in this embodiment (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0056] In addition, the descriptions of "first", "second", etc. in this application are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0057] In this application, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0058] In addition, the technical solutions between the various embodiments of the present application can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by this application. It should be understood that the specific embodiments described here are only used to explain this application and are not used to limit this application.

[0059] The descriptions of directions such as "up", "down", "front", "back", "left" and "right" in this application are based on the directions shown in the drawings and are only used to explain the relative positional relationship between the components in the postures shown in the drawings. If the specific posture changes, the directional indication will also change accordingly.

[0060] At present, from the perspective of market development, the application of power batteries is becoming more and more extensive. Power batteries are not only used in energy storage power systems such as hydropower, thermal power, wind power and solar power stations, but also widely used in electric vehicles such as electric bicycles, electric motorcycles, electric cars, as well as military equipment and aerospace and other fields. With the continuous expansion of the application field of power batteries, the market demand is also constantly expanding.

[0061] The battery device includes a box body and a fuse. The box body is provided with a receiving cavity, and a battery cell is provided in the receiving cavity. During the manufacture or use of the battery device, there is a situation where the fuse is damaged and needs to be repaired or replaced. After careful study, the applicant found that the fuse is generally arranged in the box body, or in the high-voltage box. The high-voltage box is also arranged in the box body. Therefore, the box body needs to be opened for repair or replacement of the fuse. The box body includes a box body and an upper cover covering the box body. The upper cover is generally locked with the box body by multiple bolts, and the components in the box body have complex structures and are difficult to identify, resulting in time-consuming and labor-intensive maintenance of the fuse. In the related art, a larger operating space is provided for the installation position of the fuse to facilitate the replacement of the fuse, hoping to reduce the difficulty of maintenance, but it is inevitable to open the box body, which does not help much in reducing the difficulty of maintenance.

[0062] To this end, the applicant provides a battery device, including a box body, a battery cell, a mounting box and a fuse, wherein the box body is provided with a receiving cavity and a mounting hole connected to the receiving cavity; the battery cell is arranged in the receiving cavity; the mounting box includes a box body and a cover body that can be opened and closed to cover the box body, the box body is installed in the mounting hole, the box body is provided with a mounting cavity, the box body is provided with a through hole connecting the mounting cavity and the receiving cavity, and the cover body is arranged outside the box body; the fuse is installed on the cover body and is located in the mounting cavity. The cover body is arranged outside the box body, so that it is convenient to open the cover body from the outside of the box body, so that the fuse can be repaired or replaced without opening the box body, and the fuse connected to the cover body can be taken out while opening the cover body, which reduces the difficulty of maintenance.

[0063] Please refer to Figure 1 , Figure 1A schematic diagram of the structure of a vehicle 1000 provided for some embodiments of the present application. The electrical equipment may be a vehicle 1000, and the vehicle 1000 may be a fuel vehicle, a gas vehicle or a new energy vehicle, and the new energy vehicle may be a pure electric vehicle, a hybrid vehicle or an extended-range vehicle, etc. A battery device 100 is provided inside the vehicle 1000, and the battery device 100 may be provided at the bottom, head or tail of the vehicle 1000. The battery device 100 may be used to power the vehicle 1000, for example, the battery device 100 may be used as an operating power source for the vehicle 1000. The vehicle 1000 may also include a controller 200 and a motor 300, and the controller 200 is used to control the battery device 100 to power the motor 300, for example, for the working power demand of the vehicle 1000 during starting, navigation and driving.

[0064] In some embodiments of the present application, the battery device 100 can not only serve as an operating power source for the vehicle 1000, but also serve as a driving power source for the vehicle 1000, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1000.

[0065] Please refer to Figure 2 , Figure 2 The schematic diagram of the exploded structure of the battery device 100 provided in some embodiments of the present application. The battery device 100 includes a box body 10 and a battery cell 20, and the battery cell 20 is contained in the box body 10. Among them, the box body 10 is used to provide a storage space for the battery cell 20, and the box body 10 can adopt a variety of structures. In some embodiments, the box body 10 may include an upper cover 11 and a box body 12, and the upper cover 11 and the box body 12 cover each other, and the upper cover 11 and the box body 12 jointly define a storage space for accommodating the battery cell 20. The box body 12 can be a hollow structure with one end open, and the upper cover 11 can be a plate-like structure. The upper cover 11 covers the open side of the box body 12, so that the upper cover 11 and the box body 12 jointly define a storage space; the upper cover 11 and the box body 12 can also be hollow structures with one side open, and the open side of the upper cover 11 covers the open side of the box body 12. Of course, the box body 10 formed by the upper cover 11 and the box body 12 can be in a variety of shapes, such as a cylinder, a cuboid, etc.

[0066] The battery device 100 mentioned in the embodiment of the present application may include one or more battery cell assemblies for providing voltage and capacity. The battery cell assembly may include a plurality of battery cells 20, and the plurality of battery cells 20 are connected in series, in parallel or in mixed connection through a busbar.

[0067] In some embodiments, a battery cell assembly is generally formed by arranging a plurality of battery cells 20 .

[0068] As an example, the battery cell assembly may be a battery module, which is formed by arranging and fixing a plurality of battery cells 20 to form an independent module. As an example, the battery module may be formed by bundling a plurality of battery cells 20 by a cable tie.

[0069] In some embodiments, the battery device 100 may be a battery pack, which includes a case 10 and one or more battery cell assemblies, wherein the battery cell assemblies are accommodated in the case 10 .

[0070] As an example, the battery cell assembly may be a battery module, and the battery cell assembly may be accommodated in the box body 10 by fixing the battery module in the box body 10 .

[0071] As an example, the battery cell assembly may also be accommodated in the case 10 by directly fixing the plurality of battery cells 20 to the case 10 .

[0072] In the battery device 100, there may be multiple battery cells 20, and the multiple battery cells 20 may be connected in series, in parallel, or in a mixed connection. A mixed connection means that the multiple battery cells 20 are both connected in series and in parallel. The multiple battery cells 20 may be directly connected in series, in parallel, or in a mixed connection, and then the whole formed by the multiple battery cells 20 is accommodated in the box 10; of course, the battery device 100 may also be a battery module formed by connecting multiple battery cells 20 in series, in parallel, or in a mixed connection, and then the multiple battery modules are connected in series, in parallel, or in a mixed connection to form a whole, and accommodated in the box 10. The battery device 100 may also include other structures, for example, the battery device 100 may also include a busbar component for realizing electrical connection between the multiple battery cells 20.

[0073] Each battery cell 20 may be a secondary battery or a primary battery, or a lithium-sulfur battery, a sodium-ion battery, or a magnesium-ion battery, but is not limited thereto. The battery cell 20 may be cylindrical, flat, rectangular, or in other shapes.

[0074] Reference Figure 3-Figure 6 According to some embodiments of the present application, the present application provides a battery device 100, including a box body 10, a battery cell 20, a mounting box 3 and a fuse 4, the box body 10 is provided with a accommodating cavity; the battery cell 20 is arranged in the accommodating cavity; the mounting box 3 includes a box body 31 and a cover body 32 that can be opened and closed on the box body 31, the box body 31 is installed in the box body 10, the box body 31 is provided with a mounting cavity 33, the box body 31 is provided with a through hole 34 connecting the mounting cavity 33 and the accommodating cavity, and the cover body 32 is arranged on the outside of the box body 10; the fuse 4 is installed on the cover body 32 and is located in the mounting cavity 33.

[0075] The box body 10 includes an outer shell wall, and the outer shell wall is arranged to form an internal accommodating cavity. A battery cell 20 is arranged in the accommodating cavity, and the number of battery cells 20 can be multiple. The installation box 3 includes a box body 31 and a cover body 32. The box body 31 is installed on the box body 10. Here, the box body 31 can be installed on the outer shell wall of the box body 10. The box body 31 is provided with an installation cavity 33. The cover body 32 covers the opening of the installation cavity 33, and the cover body 32 is arranged on the outside of the box body 10. At the same time, a through hole 34 is provided on the box body 31. The through hole 34 is used to connect the installation cavity 33 and the accommodating cavity. Specifically, the through hole 34 is arranged at the position where the box body 31 is located in the accommodating cavity. After the installation box 3 is assembled and assembled, when the installation box 3 is affected by factors such as temperature changes, the internal air pressure of the installation box 3 will tend to increase, which not only affects the assembly, but also may cause an explosion risk after the air pressure increases. Therefore, an opening design is made on the wall of the installation box 3, and the air pressure inside the installation cavity 33 and the accommodating cavity are connected by setting a through hole 34 to achieve air pressure balance, and the explosion-proof valve of the battery device 100 is used to control the overall air pressure, thereby reducing the risk of explosion caused by excessive air pressure in the box body 31. The through hole 34 is set so that the installation cavity 33 and the accommodating cavity are always in a connected state, which can achieve air pressure balance, and the through hole 34 is simple to make, and no additional control operation is required during use. The cover body 32 is set on the outside of the box body 10, and the cover body 32 is covered on the opening of the box body 31. The opening of the box body 31 is connected to the accommodating cavity, or it can be said that the opening of the box body 31 is the opening of the accommodating cavity, so that the cover body 32 can be opened from the outside of the box body 10 to expose the fuse 4 in the box body 31, and the fuse 4 can be repaired or replaced without opening the box body 10, thereby reducing the difficulty of repair. And the fuse 4 is installed on the cover body 32, so that the fuse 4 can be taken out at the same time when the cover body 32 is opened, which simplifies the removal steps of the fuse 4 and further simplifies the maintenance steps.

[0076] By setting the installation box 3 on the box body 10, the installation box 3 is set to include a box body 31 and a cover body 32 that can be opened and closed and installed on the box body 31, and the fuse 4 is installed on the cover body 32, the cover body 32 can open the opening of the box body 31, and the cover body 32 is set outside the box body 10, so that it is convenient to open the cover body 32 from the outside of the box body 10, so that the fuse 4 can be repaired or replaced without opening the box body 10, and the fuse 4 connected to the cover body 32 can be taken out while opening the cover body 32, further reducing the difficulty of maintenance. In addition, the through hole 34 is set so that the installation cavity 33 and the accommodating cavity are always in a connected state, which can achieve air pressure balance, and the through hole 34 is simple to make, and no additional control operation is required during use.

[0077] In some embodiments, the box body 10 is provided with a mounting hole communicating with the accommodating cavity, the box body 31 is mounted in the mounting hole, and the box body 31 at least partially extends into the accommodating cavity through the mounting hole.

[0078] A mounting hole is provided on the shell wall surface of the outer shell wall of the box body 10, and the mounting hole connects the accommodating cavity and the outside atmosphere. The mounting hole is provided for the installation of the mounting box 3, specifically, the box body 31 of the mounting box 3 is installed on the mounting hole. The box body 31 is at least partially extended into the accommodating cavity, so that the internal space of the box body 10 can be fully utilized, and the space occupied outside the box body 10 can be reduced, which is conducive to reducing the volume of the battery device 100. Of course, the cover body 32 is still arranged outside the box body 10. At the same time, a through hole 34 can be provided in the part of the box body 31 extending into the accommodating cavity, so as to facilitate the connection between the mounting cavity 33 and the accommodating cavity.

[0079] By providing a mounting hole on the box body 10 and partially placing the mounting box 3 in the accommodating cavity through the mounting hole, the volume of the battery device 100 can be reduced.

[0080] Reference Figure 3 In some embodiments, the cover body 32 and the box body 31 are detachably connected via a threaded fastener 8 .

[0081] Specifically, connection holes can be set at positions corresponding to the cover body 32 and the box body 31, and the cover body 32 and the box body 31 can be detachably connected by threaded fasteners 8. As for the number of connection holes and threaded fasteners 8, the threaded fasteners 8 can be bolts or screws. The nut is set toward the outside of the box body 10. When the cover body 32 needs to be opened, the bolt or screw is removed by screwing the nut, and the cover body 32 is taken off the box body 31, and the fuse 4 installed on the cover body 32 is taken out together. After the maintenance is completed, the cover body 32 is covered on the opening of the box body 31, and the connection between the cover body 32 and the box body 31 can be achieved by screwing the bolts or screws into the connection holes. As for the number of connection holes and threaded fasteners 8, those skilled in the art can set them according to actual needs, and this application does not make specific restrictions.

[0082] The cover body 32 and the box body 31 are detachably connected by the threaded fastener 8, which is convenient for installation and disassembly, and has good installation firmness.

[0083] In some embodiments, a buckle is provided on the cover body 32, and a bayonet is provided on the box body 31; or, a bayonet is provided on the cover body 32, and a buckle is provided on the box body 31; the box body 31 and the cover body 32 are connected by the buckle and the bayonet.

[0084] The connection with the threaded fastener 8 is a feasible implementation. In other embodiments, the connection between the cover body 32 and the box body 31 can also be achieved by a detachable connection such as a snap connection. Specifically, a snap buckle can be provided on the cover body 32, and a snap-in that is snap-fitted with the snap buckle can be provided at a corresponding position on the box body 31. Alternatively, a snap-in can be provided on the box body 31, and a snap buckle that is snap-fitted with the snap-in can be provided at a position corresponding to the snap-in on the cover body 32. As a specific implementation, the snap buckle can be a protruding end with a certain elasticity, and the snap-in can be a notch or a slot that matches the protruding end.

[0085] By arranging the cover body 32 and the box body 31 in a connection mode of snap-fit ​​and bayonet connection, a detachable connection between the cover body 32 and the box body 31 can be achieved, and both installation and removal are very convenient.

[0086] In some embodiments, a hinge shaft is provided on the box body 31 , and the cover body 32 is rotatably connected to the hinge shaft, so that the cover body 32 can be rotated to open or close the installation cavity 33 .

[0087] In this embodiment, the opening of the box body 31 can also be opened by rotating the cover body 32. When the cover body 32 is rotated and opened, the fuse 4 can be taken out together, and the operator can repair or replace the fuse 4. Specifically, a hinge axis can be provided on the box body 31, and the cover body 32 is hinged to the hinge axis. The hinge axis can be set to be stationary while the cover body 32 rotates around the hinge axis, so that the cover body 32 can open or close the installation cavity 33 of the box body 31.

[0088] By arranging a hinge shaft on the box body 31 , the cover body 32 can open or close the installation cavity 33 by rotating, so that the fuse 4 in the installation cavity 33 can be easily repaired or replaced, and it is convenient to open or close the cover body 32 .

[0089] Reference Figure 5 In some embodiments, the box body 31 includes an inner shell 311 and an outer shell 312, the inner shell 311 includes a base 3114 and a side enclosure 3115 arranged on the base 3114, the outer shell 312 is sleeved on the side enclosure 3115 and connected to the base 3114, the inner shell 311 is provided with an installation cavity 33, and the cover body 32 is detachably connected to the outer shell 312.

[0090] The inner shell 311 and the outer shell 312 refer to the relative position relationship. Specifically, the inner shell 311 includes a base 3114 and a side enclosure 3115 disposed on the base 3114. The shape of the side enclosure 3115 is adapted to the shape of the outer shell 312, such as a square side enclosure or a circular side enclosure. The outer shell 312 is sleeved on the outer wall surface of the side enclosure 3115, and one side of the outer shell 312 is connected to the cover body 32, and the side of the outer shell 312 away from the cover body 32 is connected to the base 3114, so as to achieve the fixing of the outer shell 312. The inner shell 311 is provided with the above-mentioned installation cavity 33, and the cover body 32 is detachably installed on the outer shell 312.

[0091] By providing the box body 31 including an inner shell 311 and an outer shell 312, a detachable connection is achieved between the outer shell 312 and the cover body 32, and the double-layer shell can also achieve a waterproof effect.

[0092] Reference Figure 5 or Figure 6 In some embodiments, a connecting portion 31142 is provided on a side of the base 3114 facing away from the side periphery 3115 , and a connecting position for the connecting portion 31142 is provided in the box body 10 .

[0093] The connection portion 31142 is located in the accommodating cavity and can be connected to the connection position in the box body 10, so as to further fix the installation box 3 and prevent the installation box 3 from being loosened from the installation hole. As for the form of the connection portion 31142, there can be many types, such as an extended section, a screw hole is set on the extended section, and the connection portion 31142 is fixed in the box body 10 by bolts, etc. Of course, it can also be a plug-in form.

[0094] By providing the connecting portion 31142, the connecting portion 31142 extends into the accommodating cavity and connects with the connecting position in the box body 10, so that the installation box 3 can be fixedly installed and the risk of the installation box 3 falling off can be reduced.

[0095] Reference Figure 5 , Figure 7 and Figure 8 In some embodiments, a stud 5 is provided on the cover body 32, and a threaded hole 51 is provided on the stud 5. The fuse 4 includes a connecting member 42, and the connecting member 42 includes a connecting plate 421 and a threaded member 422. The threaded member 422 passes through the connecting plate 421 and is installed in the threaded hole 51 to install the fuse 4 on the cover body 32.

[0096] Since there may be a distance between the cover body 32 and the threaded member 422, an extended stud 5 is provided for connection. The stud 5 refers to a column provided on the side of the cover body 32 facing the installation cavity 33, and may be an elongated cylinder with a hole provided therein. The hole in the stud 5 is a threaded hole 51 with an internal thread. The stud 5 extends from the cover body 32 toward the bottom surface of the box body 31, and the central axis of the stud 5 is parallel to the central axis of the box body 31, so that the threaded member 422 can be easily aligned and connected. The stud 5 is also provided to extend the threaded hole 51 from the cover body 32 to a place close to the threaded member 422, so as to facilitate the threaded connection between the threaded member 422 and the threaded hole 51 of the stud 5, and realize the installation of the fuse 4 on the cover body 32. A connecting plate 421 is provided on the body of the fuse 4, and a through hole is provided on the connecting plate 421. The threaded member 422 passes through the through hole and is installed in the threaded hole 51 of the stud 5. While realizing the installation of the fuse 4, a detachable connection is also adopted, which is convenient for taking down the fuse 4 for maintenance or replacement. As for the number of the studs 5 and the threaded members 422, each stud 5 is provided with a threaded hole 51, which may be two, and the two threaded members 422 are respectively provided on the opposite sides of the body, and the studs 5 and the threaded members 422 are provided in a one-to-one correspondence. Of course, the number of the studs 5 and the threaded members 422 can also be four and be provided in a one-to-one correspondence. The present application does not limit the specific number of the studs 5 and the threaded members 422. In other embodiments, the fuse 4 can also be snap-fitted to the cover body 32.

[0097] By providing a protruding stud 5 on the cover body 32 and extending the threaded hole 51 to a position close to the threaded member 422 , the connection between the fuse 4 and the cover body 32 is achieved.

[0098] In some embodiments, a signal interface is provided in the accommodating cavity, referring to Figure 5 and Figure 7 An electrical connector 41 is provided at one end of the fuse 4 away from the cover body 32 . The end of the fuse 4 away from the cover body 32 extends into the accommodating cavity through the through hole 34 . The electrical connector 41 is plugged into the signal interface along the central axis direction of the box body 31 .

[0099] One end of the fuse 4 is arranged toward the cover body 32, and the other end is arranged away from the cover body 32. The fuse 4 is generally provided with an electrical connector 41, which is arranged at the end of the fuse 4 away from the cover body 32, and the end of the fuse 4 away from the cover body 32 passes through the through hole 34 and extends from the installation cavity 33 into the accommodating cavity, and is electrically connected to the signal interface arranged in the accommodating cavity. Because based on the need to realize the function of the fuse 4, the fuse 4 needs to be electrically connected to the circuit in the battery device 100, so a signal interface is arranged in the accommodating cavity, so that the electrical connector 41 of the fuse 4 is electrically connected to the signal interface to achieve connection with the circuit. Directly connecting the electrical connector 41 of the fuse 4 to the signal interface in the accommodating cavity can reduce the number of connecting components. When the cover 32 is opened, for the threaded connection or the snap connection, the cover 32 is taken out along the central axis direction of the box body 31 in the direction away from the opening, and the electrical connector 41 is plugged into the signal interface along the central axis direction of the box body 31, and the electrical connector 41 can be separated from the signal interface along the opposite direction of the plugging of the electrical connector 41 and the signal interface, thereby reducing the risk of inconvenience or damage to the electrical connector 41 and the signal interface caused by the misalignment of the direction of the applied force. Of course, in the embodiment in which the cover 32 is opened by rotation, when the cover 32 is opened again, a component force can be applied to the electrical connector 41 along the opposite direction of the plugging of the electrical connector 41 and the signal interface, and the electrical connector 41 can also be taken out.

[0100] By arranging the signal interface in the accommodating cavity, the fuse 4 is directly electrically connected to the signal interface through the through hole 34, so that the number of connecting components can be reduced. In addition, the electrical connector 41 is plugged into the signal interface along the central axis direction of the box body 31, so that the electrical connector 41 can be separated from the signal interface at the same time when the cover body 32 is opened.

[0101] In some embodiments, the through hole 34 is disposed through the bottom of the mounting cavity 33 , and a gap is disposed between the through hole 34 and the fuse 4 .

[0102] The through hole 34 is arranged at the bottom of the cavity, so that the fuse 4 can pass through the through hole 34 along the central axis direction of the box body 31 and extend into the accommodating cavity. At the same time, a gap is arranged between the through hole 34 and the fuse 4. Specifically, the size of the through hole 34 can be larger than the size of the fuse 4, so that there is a gap between the outer peripheral wall of the fuse 4 and the inner wall of the through hole 34, thereby reducing the risk that the through hole 34 is completely shielded by the fuse 4 and affects the air circulation of the installation cavity 33 and the accommodating cavity.

[0103] By setting the through hole 34 at the bottom of the cavity, the electrical connector 41 of the fuse 4 can be conveniently connected to the signal interface in the accommodating cavity through the through hole 34; at the same time, a gap is set between the through hole 34 and the fuse 4 to ensure air circulation between the installation cavity 33 and the accommodating cavity, so that the air pressure between the two is balanced.

[0104] In some embodiments, a signal interface is disposed on the box body 31 , and an electrical connector 41 is disposed on the fuse 4 . The electrical connector 41 is plugged into the signal interface along the central axis direction of the box body 31 .

[0105] In this embodiment, the signal interface is arranged in the installation cavity 33 of the box body 31, and the electrical connector 41 on the fuse 4 is connected to the signal interface on the box body 31, so that the fuse 4 does not need to pass through the through hole 34, and the air pressure connection between the installation cavity 33 and the accommodating cavity can be improved. Of course, it is also necessary to plug the electrical connector 41 into the signal interface along the central axis direction of the box body 31, so that when the cover body 32 is opened, it is easy to separate the electrical connector 41 from the signal interface.

[0106] By setting a signal interface on the box body 31, the electrical connector 41 on the fuse 4 is electrically connected to the signal interface, and the electrical connector 41 is plugged into the signal interface along the central axis direction of the box body 31, so that the electrical connector 41 can be easily separated from the signal interface when the cover body 32 is opened.

[0107] In some embodiments, the box body 31 at least partially extends into the accommodating cavity.

[0108] The installation box 3 may be installed at the position of the installation hole with the bottom of the box body 31, or most of the box body 31 may be installed in the accommodating cavity, or only the cover body 32 of the box body 31 is exposed, and the rest of the box body 31 is located in the accommodating cavity. However, the deeper the box body 31 is inserted into the accommodating cavity, the less the box body 31 will be exposed outside the box body 10, and the smaller the volume of the entire battery device 100 will be. Of course, the layout inside the box body 10 also needs to be considered at this time. However, the box body 31 needs to at least partially extend into the accommodating cavity so that the accommodating cavity and the installation cavity 33 can be connected through the through hole 34, reducing the risk of the installation box 3 exploding due to excessive air pressure.

[0109] By at least partially arranging the box body 31 in the receiving cavity, the installation cavity 33 of the box body 31 is conveniently connected to the receiving cavity through the through hole 34, thereby reducing the risk of explosion. At the same time, the box body 31 partially extends into the receiving cavity, thereby reducing the volume of the battery device 100.

[0110] Reference Figure 5-Figure 7 In some embodiments, the base 3114 is provided with a first connection hole 31141, the housing 312 is provided with a second connection hole 3121, and the cover 32 is provided with a third connection hole 321. The number of the first connection hole 31141, the second connection hole 3121, and the third connection hole 321 is the same and is provided in one-to-one correspondence;

[0111] The battery device 100 further includes a threaded fastener 8 , which passes through the third connection hole 321 , the second connection hole 3121 , and the first connection hole 31141 in sequence to connect the cover 32 , the outer shell 312 , and the inner shell 311 .

[0112] The first connection hole 31141 here can be a hole with internal threads, the second connection hole 3121 and the third connection hole 321 can be holes with smooth inner wall surfaces, and the number of the first connection holes 31141, the second connection holes 3121, and the third connection holes 321 is the same and they are arranged in one-to-one correspondence. Each group of correspondingly arranged first connection holes 31141, second connection holes 3121, and third connection holes 321 is provided with a threaded fastener 8, and the threaded fastener 8 can be a screw, which extends from the third connection hole 321 of the cover body 32, passes through the second connection hole 3121 in turn, and is installed on the internal thread of the first connection hole 31141, so that the cover body 32 and the outer shell 312 are detachably connected, and the detachable connection between the inner shell 311 and the outer shell 312 is also achieved.

[0113] By setting corresponding holes on the base 3114, the outer shell 312 and the cover body 32, a detachable connection between the three is achieved through the threaded fastener 8, which not only facilitates the installation and removal of the cover body 32, but also enables the outer shell 312 and the inner shell 311 to be detachably connected, thereby facilitating the repair or replacement of the fuse 4 in the inner shell 311.

[0114] Reference Figure 7 In some embodiments, a first sealing ring 6 is provided on the contact surface between the cover 32 and the housing 312; and / or

[0115] A second sealing ring 7 is provided on the contact surface between the base 3114 and the housing 312; and / or,

[0116] A sealing layer is provided at the connection between the outer shell 312 and the box body 10 .

[0117] Here, both the first sealing ring 6 and the second sealing ring 7 can be O-rings, made of elastic materials, such as rubber or silicone, which have a certain elasticity. The two sides of the first sealing ring 6 are respectively in contact with the cover 32 or the shell 312, and the two sides of the second sealing ring 7 are respectively in contact with the base 3114 and the shell 312. The first sealing ring 6 and the second sealing ring 7 are pressed tightly with a pre-pressure. The first sealing ring 6 can play a role of waterproofing and dustproofing on the connection interface between the cover 32 and the shell 312, and the second sealing ring 7 can play a role of waterproofing and dustproofing on the connection interface between the base 3114 and the shell 312. The sealant layer can be formed by coating the connection between the box 10 and the shell 312 with sealant, which also plays a role of waterproofing and dustproofing.

[0118] By providing a first sealing ring 6 on the contact surface between the cover body 32 and the outer shell 312, a second sealing ring 7 on the contact surface between the base 3114 and the outer shell 312, and a sealing rubber layer at the connection between the outer shell 312 and the box body 10, it can achieve the effect of waterproof and dustproof.

[0119] According to some embodiments of the present application, the present application provides a battery device 100, including a box body 10, a battery cell 20, a mounting box 3 and a fuse 4, the box body 10 is provided with a accommodating cavity and a mounting hole connected to the accommodating cavity; the battery cell 20 is arranged in the accommodating cavity; the mounting box 3 includes a box body 31 and a cover body 32 that can be opened and closed to cover the box body 31, the cover body 32 and the box body 31 are detachably connected by a threaded fastener 8, the box body 31 is installed in the mounting hole, the box body 31 is provided with a mounting cavity 33, the box body 31 is provided with a through hole 34 connecting the mounting cavity 33 and the accommodating cavity, and the cover body 32 is arranged on the outside of the box body 10; the cover body 32 is provided with a stud 5, the stud 5 is provided with a threaded hole 51, the fuse 4 includes a connecting plate 421 and a threaded member 422, the threaded member 422 passes through the connecting plate 421 and is installed in the threaded hole 51, so as to install the fuse 4 on the cover body 32. A signal interface is provided in the accommodating cavity, an electrical connector 41 is provided at one end of the fuse 4 away from the cover 32, and the end of the fuse 4 away from the cover 32 extends into the accommodating cavity through the through hole 34, and the electrical connector 41 is plugged into the signal interface along the central axis direction of the box body 31, and a gap is provided between the through hole 34 and the fuse 4. Specifically, the box body 31 includes an inner shell 311 and an outer shell 312, the inner shell 311 includes a base 3114 and a side enclosure 3115 provided on the base 3114, the outer shell 312 is sleeved on the side enclosure 3115 and connected to the base 3114, the inner shell 311 is provided with a mounting cavity 33, and the cover 32 and the outer shell 312 are detachably connected. A first sealing ring 6 is provided on the abutting surface between the cover 32 and the outer shell 312; and / or, a second sealing ring 7 is provided on the abutting surface between the base 3114 and the outer shell 312; and / or, a sealing layer is provided at the connection between the outer shell 312 and the box body 10. The embodiment of the present application not only allows the fuse 4 to be taken out from the installation box 3 for maintenance without opening the box body 10, but also allows the fuse 4 to be taken out together with the cover body 32 when it is opened, thereby reducing the difficulty of maintenance.

[0120] According to some embodiments of the present application, the present application provides an electric device, which includes an equipment body and the above-mentioned battery device 100, and the battery device 100 is arranged in the equipment body. The above-mentioned electric device can be a vehicle 1000. Since the electric device includes any technical solution of all the above-mentioned embodiments, it has at least all the beneficial effects brought by any of the above-mentioned technical solutions, which will not be repeated here one by one.

[0121] The above description is only an optional embodiment of the present application, and does not limit the patent scope of the present application. All equivalent structural changes made by using the contents of the present application specification and drawings under the application concept of the present application, or directly / indirectly used in other related technical fields are included in the patent protection scope of the present application.

Claims

1. A battery device, characterized in that: include: A box body, wherein the box body is provided with a containing cavity; A battery cell, wherein the battery cell is disposed in the accommodation cavity; An installation box, the installation box comprising a box body and a cover body which can be opened and closed to cover the box body, the box body is installed in the box body, the box body is provided with an installation cavity, the cover body is arranged on the outside of the box body, and the box body is provided with a through hole connecting the installation cavity and the accommodating cavity; A fuse, wherein the fuse is located in the installation cavity; The cover body is provided with a stud, and the stud is provided with a threaded hole; the fuse includes a connecting plate and a threaded member, and the threaded member passes through the connecting plate and is installed in the threaded hole to install the fuse on the cover body; or, the fuse is snap-connected with the cover body.

2. The battery device according to claim 1, characterized in that The cover body is detachably connected to the box body via a threaded fastener.

3. The battery device according to claim 1, characterized in that: The cover body is provided with a buckle, and the box body is provided with a bayonet; or the cover body is provided with a bayonet, and the box body is provided with a buckle; The box body and the cover body are snap-connected with the bayonet through the buckle.

4. The battery device according to claim 1, wherein: The box body is provided with a hinge shaft, and the cover body is rotatably connected to the hinge shaft, so that the cover body can be rotated to open or close the installation cavity.

5. The battery device according to claim 1, wherein: The box body is provided with a mounting hole communicated with the accommodating cavity, the box body is mounted on the mounting hole, and the box body at least partially extends into the accommodating cavity through the mounting hole.

6. The battery device according to any one of claims 1 to 5, characterized in that: A signal interface is provided in the accommodating cavity, an electrical connector is provided at one end of the fuse away from the cover body, the end of the fuse away from the cover body extends into the accommodating cavity through the through hole, and the electrical connector is plugged into the signal interface along the central axis direction of the box body.

7. The battery device according to claim 6, characterized in that: The through hole is arranged to pass through the bottom of the installation cavity, and a gap is arranged between the through hole and the fuse.

8. The battery device according to any one of claims 1 to 5, characterized in that: The box body is provided with a signal interface, the fuse is provided with an electrical connector, and the electrical connector is plugged into the signal interface along the central axis direction of the box body; and / or, The box body at least partially extends into the accommodating cavity.

9. The battery device according to any one of claims 1 to 5, characterized in that: The box body includes an inner shell and an outer shell, the inner shell includes a base and a side enclosure arranged on the base, the outer shell is sleeved on the side enclosure and connected to the base, the inner shell is provided with the installation cavity, and the cover body is detachably connected to the outer shell.

10. The battery device according to claim 9, characterized in that A first sealing ring is provided on the contact surface between the cover and the housing; and / or, A second sealing ring is provided on the abutting surface between the base and the housing; and / or, A sealing rubber layer is provided at the connection between the shell and the box body.

11. The battery device according to claim 9, characterized in that: A connecting portion is provided on a side of the base away from the side surround, and a connecting position for the connecting portion is provided in the box body.

12. An electrical equipment, characterized in that: The electrical equipment comprises an equipment body and a battery device according to any one of claims 1 to 11, wherein the battery device is arranged on the equipment body.

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