High-voltage box, battery and electrical device

Abstract

Provided in the present application are a high-voltage box (400), a battery (100) and an electrical device. The high-voltage box (400) comprises a box body (410) connected to a case body (10), an accommodation cavity (4101) being formed in the box body (410), and the box body (410) being provided with a through hole (411) communicated with the accommodation cavity (4101). The high-voltage box (400) provided in the embodiments of the present application enables an electrical connection structure (30) of the battery (100) to be inserted into the through hole (411) and to extend into the accommodation cavity (4101), such that the electrical connection structure (30) and an electrical component (420) in the box body (410) can be directly and electrically connected, which, compared with the manner of mating connection of a male terminal and a female terminal of a connector, can effectively reduce the probability of connection failure.

Description

High-voltage boxes, batteries and electrical equipment

[0001] This application refers to Chinese patent application No. 202420016694.7 filed on January 2, 2024, entitled “High-voltage box, battery and electrical equipment”, which is incorporated into this application in its entirety by reference. Technical Field

[0002] The present application relates to the technical field of high-voltage boxes, and in particular provides a high-voltage box, a battery, and an electrical device. Background Art

[0003] High-voltage power boxes are primarily used for centralized control and protection of high-voltage power systems, ensuring their safe and stable operation. In power-consuming devices such as electric or hybrid vehicles, high-voltage power boxes are the control units that distribute power battery energy, effectively distributing high voltage to the battery.

[0004] In the related art, the high-voltage box and the battery are electrically connected by plugging the male and female sockets of the connector together. However, the connector is prone to connection interface failure, which leads to failure of the connection between the high-voltage box and the battery.

[0005] Application Contents

[0006] The purpose of the embodiments of the present application is to provide a high-voltage box, a battery and an electrical device, aiming to solve the problem in the related art that the connection interface failure is easy to occur when the high-voltage box and the battery are connected through the male and female sockets of the connector.

[0007] To achieve the above objectives, the technical solutions adopted in the embodiments of the present application are:

[0008] In the first aspect, an embodiment of the present application provides a high-voltage box, which is arranged on a battery box. The high-voltage box includes a box body, which is connected to the box body. A accommodating cavity for accommodating electrical components is formed inside the box body. A through hole connecting the accommodating cavity is opened on the box body, and the through hole is used for inserting the electrical connection structure of the battery.

[0009] Beneficial effects of the embodiments of the present application: The high-voltage box provided in the embodiments of the present application has a box body that can be connected to the battery box body, and a through hole can be opened on the box body, so that the electrical connection structure of the battery can be inserted into the through hole and extended into the accommodating cavity, so that the electrical connection structure can be directly electrically connected to the electrical components in the high-voltage box body; thereby, the electrical connection structure of the battery is directly extended into the interior of the box body and electrically connected to the internal electrical components, which can effectively reduce the probability of connection failure compared to the method of plugging and connecting through the male and female sockets of the connector; at the same time, since the use of connectors is reduced, the overall cost of the high-voltage box can be effectively reduced, and the assembly efficiency and maintenance efficiency of the high-voltage box can be improved.

[0010] In some embodiments, the box body has a mounting side surface, the mounting side surface faces the box body, and the through hole is opened on the mounting side surface.

[0011] By adopting the above technical solution, a through hole can be opened on the installation side facing the box body, and the electrical connection structure of the battery can be directly inserted into the through hole, which can effectively reduce the wiring distance of the electrical connection structure and improve the assembly efficiency of the high-voltage box.

[0012] In some embodiments, at least a portion of the mounting side surface is abutted against the wall of the box body, and the through hole is formed in the portion of the mounting side surface abutted against the wall of the box body.

[0013] By adopting the above-mentioned technical solution, a through hole can be opened in the part of the installation side that is against the wall of the box body. As a result, the wall of the box body can form a cover for the through hole to improve the sealing inside the box body. At the same time, it can also reduce the distance between the through hole and the box body to reduce the material used in the electrical connection structure and achieve the purpose of reducing costs.

[0014] In some embodiments, the high-voltage box further includes a sealing structure, which is disposed on the box body and is used to seal the through hole.

[0015] By adopting the above technical solution and providing a sealing structure on the box body, sealing protection of the through hole can be achieved, thereby improving the sealing performance of the accommodating cavity.

[0016] In some embodiments, the sealing structure includes a sealing ring, which is clamped between the mounting side and the box body, and is arranged around the orifice end of the through hole.

[0017] By adopting the above-mentioned technical solution, a sealing ring is set between the installation side and the box body, so that when the box body is installed on the box body, the sealing ring is clamped between the installation side and the box body, so that the sealing ring and the box body can form a sealing protection for the through hole, effectively improving the sealing of the accommodating cavity.

[0018] In some embodiments, the sealing ring includes a main body and a protruding portion, the main body is clamped between the installation side and the box body, the main body is arranged around the through hole, the protruding portion is connected to the main body, and the protruding portion is inserted into the through hole.

[0019] By adopting the above-mentioned technical solution, the main body of the sealing ring is arranged between the installation side and the box body to achieve sealing protection for the through hole. At the same time, the protruding portion of the sealing ring is inserted into the through hole, so that when the electrical connection structure is inserted, the protruding portion is located between the electrical connection structure and the inner wall of the through hole. The protruding portion can protect the electrical connection structure and reduce the probability of the insulating sleeve on the electrical connection structure being worn by the hole end or the inner wall of the through hole.

[0020] In some embodiments, the protruding portion is ring-shaped and is located between the electrical connection structure and the inner wall of the through hole.

[0021] By adopting the above-mentioned technical solution, the annular protrusion extends into the through hole, so that when the electrical connection structure is inserted into the through hole, the electrical connection structure can pass through the center of the annular protrusion, so that the protrusion can protect the entire circumference of the inner wall of the through hole, further reducing the probability of the insulating sleeve on the electrical connection structure being worn by the inner wall of the hole.

[0022] In some embodiments, the protruding portion passes through the through hole and extends into the accommodating cavity.

[0023] By adopting the above-mentioned technical solution, since the protrusion extends into the accommodating cavity, the protrusion can also cover and protect the hole end of the through hole located on one side of the accommodating cavity, thereby reducing the probability of the insulating sleeve on the electrical connection structure being worn and scratched by the hole end located on one side of the accommodating cavity.

[0024] In some embodiments, the mounting side surface is connected to the inner wall of the through hole via a first chamfered surface.

[0025] By adopting the above technical solution, the installation side surface is connected to the inner wall of the through hole through the first chamfered surface, which can reduce the probability of scratching the insulating sleeve on the electrical connection structure due to the sharp corners formed between the installation side surface and the inner wall of the through hole.

[0026] In some embodiments, the inner wall surface of the accommodating cavity and the inner wall of the through hole are connected via a second chamfered surface.

[0027] By adopting the above-mentioned technical solution, the inner wall surface of the accommodating cavity and the inner wall of the through hole are connected through a first chamfered surface, which can reduce the probability of scratching the insulating sleeve on the electrical connection structure due to the formation of sharp corners between the inner wall surface of the accommodating cavity and the inner wall of the through hole.

[0028] In some embodiments, a mounting portion is provided on the box body, and the mounting portion is connected to the box body.

[0029] By adopting the above technical solution, the box body can be connected and assembled with the box body through the mounting portion, thereby improving assembly efficiency.

[0030] In some embodiments, the mounting portion has a connection surface facing the box body, and the connection surface is flush with the mounting side surface.

[0031] By adopting the above-mentioned technical solution, the connection surface of the mounting part and the mounting side surface are flush, so when the mounting part is installed on the box body, the mounting side surface can be simultaneously installed against the surface of the box body to ensure that the mounting side surface is in contact with the box body, thereby improving the sealing protection effect of the sealing ring on the through hole.

[0032] In some embodiments, the box body includes a shell and an upper cover, the shell is formed with a receiving cavity having an opening, the upper cover is connected to the shell and covers the opening; the mounting portion is arranged on the shell, and the through hole is opened on the shell.

[0033] By adopting the above-mentioned technical solution, the shell forms a accommodating cavity to accommodate electrical components, and the upper cover can be covered on the opening of the shell to seal the accommodating cavity. At the same time, a through hole is opened on the shell, and the mounting portion is also located on the shell. Thus, the shell can be connected to the box body through the mounting portion, and the electrical connection structure can extend into the accommodating cavity through the through hole opened on the shell to achieve electrical connection; when the high-voltage box needs to be maintained, the upper cover can be opened to expose the electrical components inside the accommodating cavity, without the need to disassemble and assemble the shell, which effectively improves the convenience of maintenance.

[0034] In some embodiments, a connecting bracket is provided in the accommodating cavity, and the connecting bracket is used to fixedly connect the power supply connection structure and the conductive structure of the electrical component.

[0035] By adopting the above-mentioned technical solution, by arranging a connecting bracket in the accommodating cavity, the electrical connection structure of the battery and the conductive structure of the electrical component can be fixed on the connecting bracket and form a contact connection. The electrical connection is achieved by fixing and contacting the connection, which effectively improves the stability and reliability of the electrical connection.

[0036] In some embodiments, the number of through holes is one or two.

[0037] By adopting the above technical solution, the number of through holes can be one, and the electrical connection structure includes a positive copper busbar and a negative copper busbar, and both the positive copper busbar and the negative copper busbar can be plugged and connected through the through hole; or, the number of through holes can be two, so that the positive copper busbar and the negative copper busbar can be plugged and connected through different through holes.

[0038] On the second aspect, an embodiment of the present application also provides a battery, including a box body, a battery cell, an electrical connection structure and a high-voltage box as described above, the battery cell is accommodated in the box body, the box body of the high-voltage box is arranged on the outer surface of the box body, the electrical connection structure is electrically connected to the battery cell, the electrical connection structure is passed through the through hole and is electrically connected to the electrical components in the accommodating cavity.

[0039] Beneficial effects of the embodiments of the present application: The battery provided in the embodiments of the present application includes the above-mentioned high-voltage box. Since a through hole is provided on the box body of the high-voltage box, the electrical connection structure of the battery can be passed through the through hole and extended into the accommodating cavity, so that the electrical connection structure can be directly connected to the electrical components in the accommodating cavity, which can effectively reduce the probability of high-voltage box connection failure, thereby effectively improving the stability and reliability of the battery.

[0040] In a third aspect, an embodiment of the present application further provides an electrical device, comprising a battery as described above, the battery being used to provide electrical energy.

[0041] Beneficial effects of the embodiments of the present application: The electrical equipment provided by the embodiments of the present application includes the above-mentioned battery. On the basis that the above-mentioned battery has better stability and reliability, the stability and reliability of the electrical equipment are also better. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments or related technical descriptions. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0043] FIG1 is a schematic structural diagram of a vehicle provided in an embodiment of the present application;

[0044] FIG2 is an exploded view of a battery provided in an embodiment of the present application;

[0045] FIG3 is a schematic structural diagram of a high-voltage box provided in an embodiment of the present application;

[0046] FIG4 is an exploded view of a high-voltage box provided in an embodiment of the present application;

[0047] FIG5 is a schematic structural diagram of a sealing ring provided in an embodiment of the present application;

[0048] FIG6 is a schematic structural diagram of another sealing ring provided in an embodiment of the present application;

[0049] FIG7 is a schematic structural diagram of a housing provided in an embodiment of the present application.

[0050] Among them, the figure marks in the figure are: 1000, vehicle; 100, battery; 200, controller; 300, motor; 10, box body; 11, first part; 12, second part; 20, battery cell; 30, electrical connection structure; 31, positive copper bus; 32, negative copper bus; 400, high-voltage box; 410, box body; 4101, accommodating cavity; 4102, installation side; 411, through hole; 412, first chamfered surface; 413, installation part; 4131, connection surface; 414, shell; 415, upper cover; 4151, opening; 420, electrical component; 430, sealing structure; 431, sealing ring; 4311, main body; 4312, protruding part; 440, connecting bracket. DETAILED DESCRIPTION

[0051] The following describes in detail embodiments of the present application, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application, and should not be construed as limiting the present application.

[0052] In the description of this application, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0053] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. Throughout the description of this application, "plurality" means two or more, unless otherwise specifically defined.

[0054] In this application, unless otherwise expressly specified or limited, terms such as "mounted," "connected," "connect," and "fixed" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components or interactions between two components. Those skilled in the art will understand the specific meanings of these terms in this application based on specific circumstances.

[0055] Currently, market developments indicate that power batteries are becoming increasingly widely used. They are not only used in energy storage systems such as hydropower, thermal, wind, and solar power plants, but are also widely used in electric vehicles like electric bicycles, electric motorcycles, and electric vehicles, as well as in military equipment and aerospace. As power battery applications continue to expand, market demand is also growing.

[0056] Batteries are used to provide electrical energy in power systems. Batteries need to be controlled and protected by high-voltage boxes to ensure the safe and stable operation of the power system. In electrical devices such as electric or hybrid vehicles, high-voltage boxes are control units that distribute power battery energy and are used to distribute high voltage to the power battery. In related technologies, the high-voltage box and the battery are electrically connected by plugging the male and female sockets of the connector; however, the plug-in matching structure of the male and female sockets of the connector can easily lead to connector failure when the connection interface of the male or female socket fails, thereby causing the connection between the high-voltage box and the battery cells inside the battery to fail.

[0057] Based on the above considerations, in order to solve the problem of connection interface failure that is prone to occur when the high-voltage box and the battery are plugged in through the male and female sockets of the connector in the related art, a high-voltage box is designed. By opening a through hole on the box body of the high-voltage box, when connecting the high-voltage box, the electrical connection structure of the battery can be used to pass through the through hole to the inside of the accommodating cavity, so that the electrical connection structure is directly electrically connected to the electrical components in the accommodating cavity, which can reduce the use of connectors and thus reduce the probability of high-voltage box connection failure due to failure of the connection interface of the connector; at the same time, since the use of connectors is reduced, the structure of the high-voltage box is simplified, which can reduce the cost of the high-voltage box and improve the assembly efficiency and maintenance efficiency of the high-voltage box.

[0058] The high-voltage box disclosed in the embodiment of the present application can be hung on the box of the battery to achieve assembly, and is directly connected to the electrical connection structure of the battery through the through hole to achieve electrical connection with the battery.

[0059] The battery provided in the embodiments of the present application can be used as a power source for electrical devices or as an energy storage element for various energy storage systems. Electrical devices may include, but are not limited to, mobile phones, tablets, laptops, electric toys, power tools, battery cars, electric cars, ships, spacecraft, and the like. Among them, electric toys may include fixed or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, and the like, and spacecraft may include airplanes, rockets, space shuttles, and spacecraft, and the like.

[0060] For the convenience of description, the following embodiments are described by taking a vehicle 1000 as an example of an electrical device according to an embodiment of the present application.

[0061] Please refer to Figure 1, which is a schematic structural diagram of a vehicle 1000 provided in some embodiments of the present application. The vehicle 1000 can be a fuel vehicle, a gas vehicle or a new energy vehicle. The new energy vehicle can be a pure electric vehicle, a hybrid vehicle or an extended-range vehicle, etc. A battery 100 is provided inside the vehicle 1000, and the battery 100 can be provided at the bottom, head or tail of the vehicle 1000. The battery 100 can be used to power the vehicle 1000. For example, the battery 100 can serve as an 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 100 to power the motor 300, for example, for starting, navigating and driving the vehicle 1000.

[0062] In some embodiments of the present application, the battery 100 can serve not only as an operating power source for the vehicle 1000, but also 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.

[0063] Please refer to Figure 2, which is an exploded view of a battery 100 provided in some embodiments of the present application. The battery 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 storage space for the battery cell 20 and can have various structures. In some embodiments, the housing 10 can include a first portion 11 and a second portion 12, which overlap each other and together define a storage space for the battery cell 20. The second portion 12 can be a hollow structure with one end open. The first portion 11 can be a plate-like structure, with the first portion 11 overlapping the open side of the second portion 12, so that the first portion 11 and the second portion 12 together define a storage space. Alternatively, the first portion 11 and the second portion 12 can each be a hollow structure with one end open, with the open side of the first portion 11 overlapping the open side of the second portion 12. Of course, the housing 10 formed by the first portion 11 and the second portion 12 can have various shapes, such as a cylinder, a rectangular parallelepiped, etc.

[0064] In the battery 100, there may be multiple battery cells 20, and the multiple battery cells 20 may be connected in series, in parallel, or in a hybrid connection. A hybrid connection refers to a combination of series and parallel connections among the multiple battery cells 20. The multiple battery cells 20 may be directly connected in series, in parallel, or in a hybrid connection, and then the entire battery cell 20 may be housed within the housing 10. Alternatively, the battery 100 may be constructed by first connecting multiple battery cells 20 in series, in parallel, or in a hybrid connection to form a battery module, which is then connected in series, in parallel, or in a hybrid connection to form a complete battery module, and then housed within the housing 10. The battery 100 may also include other structures, such as a busbar assembly for electrically connecting the multiple battery cells 20.

[0065] Each battery cell 20 may be a secondary battery or a primary battery, and may also be 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.

[0066] According to some embodiments of the present application, please refer to Figures 2 to 4. On the first aspect, the embodiments of the present application provide a high-voltage box 400, which is arranged on the box body 10 of the battery 100. The high-voltage box 400 includes a box body 410, which is connected to the box body 10. A accommodating cavity 4101 for accommodating an electrical component 420 is formed inside the box body 410. A through hole 411 connecting to the accommodating cavity 4101 is opened on the box body 410. The through hole 411 is used for inserting the electrical connection structure 30 of the battery 100.

[0067] The housing 410 of the high-voltage box 400 defines a housing cavity 4101 for accommodating the electrical component 420. The housing 410 may be, but is not limited to, a rectangular, cylindrical, or spherical box. Alternatively, the housing 410 may be made of a variety of materials, such as an aluminum alloy box, a steel alloy box, an injection molded box, or a steel-aluminum composite box.

[0068] The box body 410 is connected to the box body 10. Optionally, the box body 410 can be connected to the inner wall of the box body 10, or the box body 410 can also be connected to the outer wall of the box body 10 to achieve the purpose of being hung on the box body 10; wherein, the box body 410 can be fixed to the wall of the box body 10 by fasteners (such as bolts, screws, etc.), or the box body 410 can also be adhesively fixed to the box body 10, or the box body 410 can also be fixed to the box body 10 by welding to achieve connection.

[0069] The through hole 411 is formed on the box body 410 for inserting the electrical connection structure 30 of the battery 100 , so that the electrical connection structure 30 of the battery 100 can directly extend into the accommodating cavity 4101 and achieve electrical connection with the internal electrical component 420 .

[0070] It is understood that the electrical connection structure 30 refers to the conductive structure of the battery 100 for transmitting electrical energy; the electrical connection structure 30 includes but is not limited to conductive structures such as electrical connection bars (such as copper metal conductive bars, silver metal conductive bars, etc., which have good conductive properties), conductive cables, conductive columns, etc. It is understood that the outer surface of the electrical connection structure 30 is covered with an insulating sleeve to achieve insulation protection. For example, in some specific embodiments, the electrical connection structure 30 may include a connecting copper bar, and the connecting copper bar includes a positive copper bar 31 and a negative copper bar 32. The positive copper bar 31 and the negative copper bar 32 are both covered with a thermoplastic sleeve to achieve insulation protection. The positive copper bar 31 and the negative copper bar 32 are exposed to the thermoplastic sleeve at the connection point to achieve contact connection. The connecting copper bar is arranged on the box 10, for example, it can be mounted on the box 10 through an insulating mounting seat, and the connecting copper bar extends outside the box 10 to achieve electrical connection with the equipment outside the box 10 (such as the high-voltage box 400 in this embodiment).

[0071] One end of the electrical connection structure 30 is electrically connected to the battery cell 20 inside the housing 10, and the other end of the electrical connection structure 30 can be inserted into the through hole 411 and extend into the accommodating cavity 4101 to achieve electrical connection with the electrical component 420 inside the accommodating cavity 4101. By adopting a structural design in which the electrical connection structure 30 is directly inserted into the accommodating cavity 4101 for direct connection, the use of connectors can be reduced, thereby reducing costs and reducing the risk of connection failure of the high-voltage box 400 due to connection failure caused by the connection interface of the connector.

[0072] The through hole 411 is used for inserting the power supply connection structure 30 ; the through hole 411 may be, but is not limited to, a circular through hole, a polygonal through hole (eg, a rectangular through hole, a hexagonal through hole, etc.), or any other through hole shape.

[0073] Optionally, the through hole 411 can be provided on any side of the box body 410. For example, in some embodiments, the through hole 411 can be provided on a side wall of the box body 410 facing the housing 10, and the electrical connection structure 30 of the battery 100 can face the box body 410 and directly extend to be inserted into the through hole 411; or, in other embodiments, the through hole 411 can be provided on any other wall other than the side wall of the box body 410 facing the housing 10, for example, a side wall intersecting with the side wall of the box body 410 facing the housing 10, and the electrical connection structure 30 of the battery 100 needs to be bent and routed toward the side wall where the through hole 411 is provided, and then be correspondingly inserted into the through hole 411.

[0074] Optionally, the number of through holes 411 can be one, and the electrical connection structure 30 includes a connecting copper busbar, so that the positive copper busbar 31 and the negative copper busbar 32 of the connecting copper busbar can be passed through the through hole 411; or, the number of through holes 411 can be two, and the electrical connection structure 30 includes a connecting copper busbar, so that the positive copper busbar 31 and the negative copper busbar 32 of the connecting copper busbar can be passed through different through holes 411 respectively; or, the number of through holes 411 can also be any number of more than two, so that any one or two through holes 411 that are opposite to or closer to the electrical connection structure 30 can be selected for passing through to improve assembly efficiency.

[0075] The high-voltage box 400 provided in the embodiment of the present application has a box body 410 of the high-voltage box 400 that can be connected to the box body 10 of the battery 100, and a through hole 411 can be opened on the box body 410, so that the electrical connection structure 30 of the battery 100 can be inserted into the through hole 411 and extend into the accommodating cavity 4101, so that the electrical connection structure 30 can be directly electrically connected to the electrical component 420 in the body of the high-voltage box 400; thus, the electrical connection structure 30 of the battery 100 is used to directly extend into the interior of the box body 410 and electrically connect to the electrical component 420 inside. Compared with the method of plugging and connecting through the male and female sockets of the connector, the probability of connection failure can be effectively reduced; at the same time, since the use of connectors is reduced, the overall cost of the high-voltage box 400 can be effectively reduced, and the assembly efficiency and maintenance efficiency of the high-voltage box 400 can be improved.

[0076] It can be understood that the electrical components 420 accommodated in the accommodating cavity 4101 include but are not limited to resistors, positive relays, negative relays, shunts, pre-charge relays, internal copper busbars for electrically connecting the above components, and mounting structures (mounting seats, mounting brackets, etc.) for connecting and assembling the above components.

[0077] Please refer to FIG. 2 to FIG. 4 . In some embodiments, the box body 410 has a mounting side surface 4102 . The mounting side surface 4102 faces the housing 10 . The through hole 411 is defined in the mounting side surface 4102 .

[0078] The mounting side surface 4102 of the box body 410 refers to the side surface of the box body 410 facing the box body 10 when the box body 410 is connected to the box body 10. It can be understood that when the box body 410 is connected to the box body 10, a tight connection can be formed between the box body 410 and the box body 10, so that the mounting side surface 4102 of the box body 410 is abutted against the surface of the box body 10; when the box body 410 is connected to the box body 10, a gap connection can be formed between the box body 410 and the box body 10, so that a gap is also formed between the mounting side surface 4102 of the box body 410 and the surface of the box body 10.

[0079] A through hole 411 is provided on the mounting side surface 4102, so that the opening of the through hole 411 is disposed toward the case 10 of the battery 100; thereby, one end of the electrical connection structure 30 of the battery 100 can extend into the case 10 and be electrically connected to the battery cell 20, or form an electrical connection with the conductive connection portion of the battery cell 20 on the case 10, and the other end of the electrical connection structure 30 can extend toward the through hole 411 provided on the mounting side surface 4102 and be inserted into the through hole 411, so that the electrical connection structure 30 can extend into the accommodating cavity 4101 and be directly electrically connected to the electrical component 420; the electrical connection structure 30 can be extended and routed along a straight line, which can effectively reduce the routing distance of the electrical connection structure 30 compared to the case where the through hole 411 is provided on other sides of the case body 410, thereby achieving the purpose of reducing the connection cost of the high-voltage box 400; at the same time, it is more convenient for the connecting copper plate to be inserted into the through hole 411 along a straight line, thereby improving the assembly efficiency of the high-voltage box 400.

[0080] 2 to 4 , in some embodiments, at least a portion of the mounting side surface 4102 abuts against the wall of the box 10 , and the through hole 411 is formed in the portion of the mounting side surface 4102 abutting against the wall of the box 10 .

[0081] At least part of the mounting side 4102 abuts against the wall of the box body 10; optionally, part of the mounting side 4102 abuts against the wall of the box body 10, for example, part of the mounting side 4102 forms a protruding structure, which can abut against the wall of the box body 10, or, the mounting side 4102 can be an arc-shaped surface, so that part of the arc-shaped surface can abut against the wall of the box body 10; or, the mounting side 4102 can completely abut against the wall of the box body 10, so that when the box body 410 is connected to the box body 10, the mounting side 4102 of the box body 410 can abut against the wall of the box body 10 as a whole.

[0082] Through-hole 411 is formed in the portion where mounting side 4102 abuts against the wall of case 10. Thus, when box body 410 is connected to case body 10, mounting side 4102 can abut against case body 10, thereby allowing the wall of case body 10 to block through-hole 411, effectively improving the sealing effect of through-hole 411 and, in turn, enhancing the sealing and protective effect within accommodating cavity 4101. Furthermore, since mounting side 4102 abuts against case body 10, the distance between the opening of through-hole 411 and case body 10 can be reduced, shortening the path for electrical connection structure 30 from case body 10 to through-hole 411 and insertion into accommodating cavity 4101. This reduces the material cost of electrical connection structure 30, thereby improving the cost of connecting materials for high-voltage box 400.

[0083] Referring to FIG. 2 to FIG. 4 , in some embodiments, the high-voltage box 400 further includes a sealing structure 430 . The sealing structure 430 is disposed on the box body 410 and is used to seal the through hole 411 .

[0084] The sealing structure 430 is used to seal the through hole 411, thereby forming a seal and preventing slipping inside the accommodating cavity 4101, effectively reducing the probability of dust, water droplets, etc. entering the accommodating cavity 4101 through the through hole 411 and affecting the internal electrical components 420.

[0085] Optionally, in the first embodiment, the sealing structure 430 may be a sealant layer. After the electrical connection structure 30 is inserted into the through hole 411 and the connection assembly is completed, the through hole 411 is sealed with glue through a glue filling process to form a sealant layer.

[0086] Alternatively, in a second embodiment, the sealing structure 430 may be an elastic filling layer, such as a silicone filling layer, a rubber filling layer, etc. The elastic filling layer may be filled into the through hole 411 so that the elastic filling layer fills the gap between the inner wall of the through hole 411 and the connecting copper plate, thereby achieving sealing protection for the accommodating cavity 4101.

[0087] Alternatively, in a third embodiment, the sealing structure 430 may be an elastic sealing ring, such as a rubber sealing ring, a silicone sealing ring, etc. The elastic sealing ring is arranged on the mounting side 4102 and is arranged around the orifice end of the through hole 411, so that when the box body 410 is installed on the box body 10, the mounting end side will be against the wall surface of the box body 10, so that the mounting end side and the wall surface of the box body 10 form a clamp with the elastic sealing ring, so that the elastic sealing ring can seal the through hole 411.

[0088] In this configuration, by providing a sealing structure 430 on the box body 410 , the sealing structure 430 is utilized to seal and protect the through hole 411 provided on the box body 410 , thereby improving the sealing and protection effect within the accommodating cavity 4101 .

[0089] Please refer to FIG. 2 to FIG. 4 . In some embodiments, the sealing structure 430 includes a sealing ring 431 . The sealing ring 431 is sandwiched between the mounting side surface 4102 and the box body 10 . The sealing ring 431 is disposed around the through hole 411 .

[0090] The sealing ring 431 may be, but is not limited to, a ring-shaped sealing structure 430 such as a silicone sealing ring 431 , a rubber sealing ring 431 , or a foam sealing ring 431 .

[0091] The sealing ring 431 is clamped between the mounting side 4102 and the box body 10. Optionally, the sealing ring 431 can be bonded to the mounting side 4102, and the orifice end of the through hole 411 is located within the inner ring area of ​​the sealing ring 431. Alternatively, a mounting ring groove surrounding the orifice end of the through hole 411 can be opened on the mounting side 4102, and the sealing ring 431 can be accommodated in the mounting ring groove to achieve assembly.

[0092] The number of the sealing rings 431 can be one or more. When there are multiple sealing rings 431 , the sealing rings 431 can be sequentially sleeved to achieve multiple sealing protection for the through hole 411 .

[0093] In this way, by setting a sealing ring 431 between the installation side 4102 and the box body 10, when the box body 410 is installed on the box body 10, the sealing ring 431 can be clamped between the installation side 4102 and the box body 10, so that the sealing ring 431 and the box body 10 can form a sealing protection for the through hole 411, effectively improving the sealing performance of the accommodating cavity 4101.

[0094] Please refer to Figures 2, 4 to 6. In some embodiments, the sealing ring 431 includes a main body 4311 and a protruding portion 4312. The main body 4311 is clamped between the installation side 4102 and the box body 10. The main body 4311 is ringed at the hole end of the through hole 411. The protruding portion 4312 is connected to the main body 4311 and is inserted into the through hole 411.

[0095] It can be understood that the main body 4311 can be an annular structure, and the main body 4311 is used to surround the hole end of the through hole 411 and be clamped between the installation side 4102 and the box body 10 to achieve sealing protection for the through hole 411.

[0096] The protruding portion 4312 is connected to the main body 4311 . Optionally, the protruding portion 4312 may be bonded to the main body 4311 , or the protruding portion 4312 and the main body 4311 may be integrally injection molded.

[0097] The protruding portion 4312 can be, but is not limited to, a protruding block, a protruding rod, a protruding plate, a protruding ring, etc.; the protruding portion 4312 is inserted into the through hole 411, so that when the electrical connection structure 30 is inserted into the through hole 411, the protruding portion 4312 is located between the electrical connection structure 30 and at least one side wall of the inner wall of the through hole 411. The protruding portion 4312 can separate the electrical connection structure 30 and the inner wall of the through hole 411, thereby reducing the probability that the insulating sleeve on the electrical connection structure 30 is worn by the hole end or the inner wall of the through hole 411 during the process of inserting the electrical connection structure 30 into the through hole 411, thereby reducing the risk of leakage of the electrical connection structure 30.

[0098] For example, in some specific embodiments, the main body 4311 can be a ring-shaped sealing rubber, and the protruding portion 4312 can be a rubber sheet integrally formed on the main body 4311, and in the direction of gravity, the rubber sheet is located below the inner ring of the main body 4311; thus, when the sealing ring 431 is assembled on the box body 410, the main body 4311 is bonded and fixed to the installation side 4102, and the rubber sheet of the protruding portion 4312 extends into the interior of the through hole 411 and shields and protects the portion of the inner wall of the through hole 411 that is located below in the direction of gravity. Thus, in the process of inserting and assembling the electrical connection structure 30 into the through hole 411, the connecting copper plate will not contact the inner wall of the through hole 411, and the sharp corners formed between the inner wall of the through hole 411 and the installation side 4102, thereby effectively reducing the probability of the insulating sleeve on the electrical connection structure 30 being worn by the hole end or the inner wall of the through hole 411.

[0099] Referring to FIG. 2 , FIG. 4 and FIG. 6 , in some embodiments, the protruding portion 4312 is ring-shaped, and the protruding portion 4312 is located between the electrical connection structure 30 and the inner wall of the through hole 411 .

[0100] It can be understood that the protrusion 4312 is set as an annular structure, so that when the main body 4311 is fixed to the installation side 4102 of the box body 410, the protrusion 4312 can be inserted into the inside of the through hole 411, and the annular protrusion 4312 can protect the inner wall of the through hole 411 in the entire circumferential direction, so that when the electrical connection structure 30 is inserted into the through hole 411 for assembly, the electrical connection structure 30 will not come into contact with the inner wall of the through hole 411 due to the protection of the annular protrusion 4312; and the sharp corners formed between the inner wall of the through hole 411 and the installation side 4102 are also protected by the protrusion 4312 and the main body 4311, thereby effectively reducing the probability of the insulating sleeve on the electrical connection structure 30 being worn by the hole end or the inner wall of the through hole 411.

[0101] Referring to FIG. 2 , FIG. 4 and FIG. 6 , in some embodiments, the protruding portion 4312 is disposed through the through hole 411 and extends into the accommodating cavity 4101 .

[0102] It can be understood that since the protrusion 4312 extends to the interior of the accommodating cavity 4101, the protrusion 4312 can also cover and protect the hole end of the through hole 411 located on the side of the accommodating cavity 4101, and the sharp corners formed by the connection between the inner wall of the through hole 411 and the inner wall of the accommodating cavity 4101 can also be blocked by the protrusion 4312; thus, during the process of the electrical connection structure 30 being inserted into the through hole 411 for assembly, the probability of the connecting copper plate contacting the sharp corners formed by the connection between the inner wall of the through hole 411 and the inner wall of the accommodating cavity 4101 is low, thereby reducing the probability of the insulating sleeve on the electrical connection structure 30 being worn and scratched by the hole end located on the side of the accommodating cavity 4101.

[0103] Referring to FIG. 7 , in some embodiments, the mounting side surface 4102 is connected to the inner wall of the through hole 411 via a first chamfered surface 412 .

[0104] The first chamfered surface 412 refers to a curved surface or a slope formed by machining the corner formed by connecting the mounting side surface 4102 and the inner wall of the through hole 411 .

[0105] In this way, the mounting side 4102 is connected to the inner wall of the through hole 411 through the first chamfered surface 412. When the electrical connection structure 30 is inserted into the through hole 411 for assembly, the probability of scratching the insulating sleeve on the electrical connection structure 30 due to the sharp corners formed between the mounting side 4102 and the inner wall of the through hole 411 can be reduced, thereby reducing the probability of leakage of the electrical connection structure 30.

[0106] Referring to FIG. 7 , in some embodiments, the inner wall surface of the accommodating cavity 4101 and the inner wall of the through hole 411 are connected via a second chamfered surface (not shown in the figure).

[0107] Among the inner sidewalls of the accommodating cavity 4101 , the side wall that can be directly connected to the inner wall of the through hole 411 is the inner sidewall on which the through hole 411 is opened.

[0108] The second chamfered surface refers to a curved surface or a slope formed by machining the corner formed by connecting the inner wall surface of the accommodating cavity 4101 and the inner wall of the through hole 411 .

[0109] In this way, the inner wall surface of the accommodating cavity 4101 and the inner wall of the through hole 411 are connected through the second chamfered surface. When the electrical connection structure 30 is inserted into the through hole 411 for assembly, the probability of scratching the insulating sleeve on the electrical connection structure 30 due to the formation of sharp corners between the inner wall surface of the accommodating cavity 4101 and the inner wall of the through hole 411 can be reduced, thereby reducing the probability of leakage of the electrical connection structure 30.

[0110] Please refer to FIG. 2 to FIG. 4 . In some embodiments, a mounting portion 413 is provided on the box body 410 , and the mounting portion 413 is connected to the box body 10 .

[0111] The mounting portion 413 is used to connect with the box body 10 , so that the box body 410 is connected to the box body 10 through the mounting portion 413 .

[0112] Optionally, the mounting portion 413 includes, but is not limited to, a mounting bracket, a mounting plate, a mounting block, a mounting beam, and other structural members. The number of mounting portions 413 can be one or more. The mounting portion 413 can be fixedly connected to the housing 10 by screwing, clamping, welding, or other means.

[0113] The mounting portion 413 can be fixedly connected to the box body 410 by welding, screwing, clamping, integral molding, etc.; it can be understood that the mounting portion 413 can be set at any position of the box body 410.

[0114] For example, in some specific embodiments, the mounting portion 413 may include a mounting block with a mounting hole. The number of mounting blocks may be multiple, for example, four. The four mounting blocks are respectively formed on the end faces of the box body 410 intersecting at the mounting side 4102. Fasteners (such as bolts, screws, etc.) are passed through the mounting holes and connected to the corresponding hole structure of the box body 10 to achieve the purpose of fixing the box body 410 to the box body 10 through the mounting blocks.

[0115] Referring to FIG. 2 to FIG. 4 , in some embodiments, the mounting portion 413 has a connecting surface 4131 facing the box body 10 , and the connecting surface 4131 is flush with the mounting side surface 4102 .

[0116] It can be understood that the connection surface 4131 refers to the side surface of one end of the mounting portion 413 facing the box body 10 when the mounting portion 413 is connected to the box body 10 .

[0117] With such arrangement, when the box body 410 is installed on the box body 10 through the mounting portion 413, the connecting surface 4131 of the mounting portion 413 will abut against the box body 10 and realize a fixed connection. Thus, the mounting side surface 4102 can be synchronously abutted against the surface of the box body 10 to ensure the abutment fit of the mounting side surface 4102 against the box body 10, and the clamping effect of the sealing ring 431 between the mounting side surface 4102 and the box body 10 is better, thereby improving the sealing and protection effect of the sealing ring 431 on the through hole 411.

[0118] Please refer to Figures 3 and 4. In some embodiments, the box body 410 includes a shell 414 and an upper cover 415. The shell 414 is formed with a accommodating cavity 4101 having an opening 4151. The upper cover 415 is connected to the shell 414 and covers the opening 4151. The mounting portion 413 is arranged on the shell 414, and the through hole 411 is opened on the shell 414.

[0119] The housing 414 is formed with a receiving cavity 4101 having an opening 4151 ; optionally, the housing 414 may be a hollow structure with an opening 4151 at one end, such as a rectangular shell, a cylindrical shell, a spherical shell, etc. with an opening 4151 at one end.

[0120] The upper cover 415 is connected to the housing 414 so that the upper cover 415 forms a cover for the opening 4151, thereby forming a sealed protection for the accommodating cavity 4101. It is understandable that the upper cover 415 can be fixedly mounted on the housing 414 by fasteners, or the upper cover 415 can also be connected to the housing 414 by a snap-fit ​​manner.

[0121] Among them, the mounting portion 413 is set on the shell 414, and the through hole 411 is opened on the shell 414. When the high-voltage box 400 needs to be maintained, the upper cover 415 can be opened to expose the electrical components 420 inside the accommodating cavity 4101, without having to remove the shell 414 from the box body 10 and then disassemble and assemble the shell 414 to open the accommodating cavity, which effectively improves the maintenance efficiency and convenience.

[0122] Referring to FIG. 2 and FIG. 4 , in some embodiments, a connection bracket 440 is provided in the accommodating cavity 4101 . The connection bracket 440 is used to fixedly connect the power connection structure 30 and the conductive structure of the electrical component 420 .

[0123] The connecting bracket 440 may be, but is not limited to, an insulating support structure such as an injection-molded bracket or a rubber bracket. The number of connecting brackets 440 may be one or more. The connecting bracket 440 may be fixed to the inner side of the accommodating cavity 4101 by screwing, bonding, or clamping.

[0124] It can be understood that the connecting bracket 440 can be used to fixedly connect the power connection structure 30 and the conductive structure (such as a copper busbar structure) of the electrical component 420, for example, the electrical connection structure 30 and the conductive structure are overlapped on the connecting bracket 440, and then the electrical connection structure 30 and the conductive structure are fixed by bolts to achieve contact connection between the electrical connection structure 30 and the conductive structure; or, the connecting bracket 440 can also be used to support and fix the electrical component 420.

[0125] In this way, by setting a connecting bracket 440 in the accommodating cavity 4101, the electrical connection structure 30 of the battery 100 and the conductive structure of the electrical component 420 can be fixed on the connecting bracket 440 and form a contact connection. The electrical connection is achieved by fixing and contacting the connection, which effectively improves the stability and reliability of the electrical connection.

[0126] Referring to FIG. 2 to FIG. 4 , in some embodiments, the number of the through hole 411 is one or two.

[0127] Among them, when the number of through holes 411 is one, the electrical connection structure 30 may include a connecting copper bus, and the positive copper bus 31 and the negative copper bus 32 of the connecting copper bus may both pass through the through hole 411 to electrically connect the electrical components 420 inside the accommodating cavity 4101.

[0128] When there are two through-holes 411, the electrical connection structure 30 may include a connecting copper busbar, and the positive copper busbar 31 and the negative copper busbar 32 of the connecting copper busbar may be simultaneously passed through one of the through-holes 411, thereby allowing the through-hole 411 with the shorter required wiring path to be selected for use. Alternatively, the positive copper busbar 31 and the negative copper busbar 32 of the connecting copper busbar may be passed through different through-holes 411, respectively, thereby reducing the size of the aperture of a single through-hole 411, thereby reducing the impact of an excessively large aperture on the overall structural strength of the high-voltage box 400.

[0129] For example, in some specific embodiments, the high-voltage box 400 includes a box body 410, which includes an upper cover 415 and a shell 414. The shell 414 is formed with a accommodating cavity 4101 having an opening 4151. The upper cover 415 is connected to the shell 414 and seals the opening 4151. The side of the shell 414 facing the box body 10 of the battery 100 is a mounting side 4102. The shell 414 is provided with a rectangular through hole 411 on the mounting side 4102, and a sealing ring 431 is bonded to the mounting end side, and the sealing ring 431 is arranged around the through hole 411. The shell 414 is integrally formed with multiple mounting parts 413 on the opposite end sides intersecting at the mounting side 4102, such as mounting blocks. The connecting surface 4131 of the mounting block is flush with the mounting side 4102, and the mounting block is provided with a mounting hole.

[0130] During assembly, the shell 414 can be installed on the outer surface of the box body 10 through the mounting block, so that the electrical connection structure 30 can pass through the through hole 411 and extend into the accommodating cavity 4101, so as to achieve contact and connection with the conductive structure of the electrical component 420; use screws to pass through the mounting holes of the mounting block and tighten it to the box body 10. At this time, the connection surface 4131 of the mounting block and the installation side surface 4102 flush with the connection surface 4131 will be against the outer surface of the box body 10, so that the installation side surface 4102 and the box body 10 will clamp the sealing ring 431, so that the sealing ring 431 can form a sealed protection for the through hole 411 between the installation side surface 4102 and the box body 10.

[0131] Please refer to Figures 2 to 4. In the second aspect, the embodiment of the present application also provides a battery 100, including a box body 10, a battery cell 20, an electrical connection structure 30 and a high-voltage box 400 as described above. The battery cell 20 is accommodated in the box body 10, and the box body 410 of the high-voltage box 400 is arranged on the outer surface of the box body 10. The electrical connection structure 30 is electrically connected to the battery cell 20. The electrical connection structure 30 is passed through the through hole 411 and is electrically connected to the electrical component 420 in the accommodating cavity 4101.

[0132] The battery 100 provided in the embodiment of the present application includes the above-mentioned high-voltage box 400. Since a through hole 411 is provided on the box body 410 of the high-voltage box 400, the electrical connection structure 30 of the battery 100 can be passed through the through hole 411 and extended into the accommodating cavity 4101, so that the electrical connection structure 30 can be directly connected to the electrical component 420 in the accommodating cavity 4101, which can effectively reduce the probability of connection failure of the high-voltage box 400, thereby effectively improving the stability and reliability of the battery 100.

[0133] Referring to Figures 1 and 2 , in a third aspect, embodiments of the present application further provide an electrical device including the aforementioned battery 100 for providing electrical energy. The electrical device may be any of the aforementioned devices or systems employing the battery 100 , such as a vehicle 1000 .

[0134] The electrical device provided in the embodiment of the present application includes the above-mentioned battery 100. On the basis that the above-mentioned battery 100 has better stability and reliability, the stability and reliability of the electrical device are also better.

[0135] The above are only preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present application should be included in the scope of protection of the present application.

Claims

1. A high-voltage box is disposed on the box body of a battery, and is characterized in that: The high-voltage box includes a box body, the box body is connected to the box, an accommodating cavity for accommodating electrical components is formed inside the box body, a through hole communicating with the accommodating cavity is opened on the box body, and the through hole is used for inserting the electrical connection structure of the battery.

2. The high-voltage box according to claim 1, characterized in that: The box body has an installation side surface facing the box, and the through hole is opened on the installation side surface.

3. The high-voltage box according to claim 2, wherein: At least a part of the installation side surface abuts against the wall surface of the box, and the through hole is opened at the part of the installation side surface that abuts against the wall surface of the box.

4. The high-voltage box according to claim 2 or 3, characterized in that: The high-voltage box further includes a sealing structure, and the sealing structure is arranged on the box body and used for sealing the through hole.

5. The high-voltage box according to claim 4, characterized in that: The sealing structure includes a sealing ring, the sealing ring is clamped between the installation side surface and the box, and the sealing ring is arranged around the orifice end of the through hole.

6. The high-voltage box according to claim 5, characterized in that: The sealing ring includes a main body part and a protruding part, the main body part is clamped between the installation side surface and the box, the main body part is arranged around the through hole, the protruding part is connected to the main body part, and the protruding part is inserted into the through hole.

7. The high-voltage box according to claim 6, characterized in that: The protruding part is annular, and the protruding part is located between the electrical connection structure and the inner wall of the through hole.

8. The high-voltage box according to claim 6 or 7, characterized in that: The protruding part penetrates through the through hole and extends into the accommodating cavity.

9. The high-voltage box according to any one of claims 2 to 8, characterized in that: The installation side surface and the inner wall of the through hole are connected by a first chamfered surface.

10. The high-voltage box according to claim 9, wherein: The inner side wall surface of the accommodating cavity and the inner wall of the through hole are connected by a second chamfered surface.

11. The high-voltage box according to any one of claims 2 to 10, characterized in that: An installation part is arranged on the box body, and the installation part is connected to the box.

12. The high-voltage box according to claim 11, characterized in that: The installation part has a connection surface facing the box, and the connection surface is flush with the installation side surface.

13. The high-voltage box according to claim 11 or 12, characterized in that: The box body includes a housing and an upper cover, the housing forms the accommodating cavity with an opening, the upper cover is connected to the housing and covers the opening; the installation part is arranged on the housing, and the through hole is opened on the housing.

14. The high-voltage box according to any one of claims 1 to 13, characterized in that: A connection bracket is arranged in the accommodating cavity, and the connection bracket is used for fixedly connecting the electrical connection structure and the conductive structure of the electrical component.

15. The high-voltage box according to any one of claims 1 to 14, characterized in that: The number of the through holes is one or two.

16. A battery, characterized in that: Including a box, a battery cell, an electrical connection structure and the high-voltage box according to any one of claims 1 to 15, the battery cell is accommodated in the box, the box body of the high-voltage box is arranged on the outer surface of the box, the electrical connection structure is electrically connected to the battery cell, and the electrical connection structure penetrates through the through hole and is electrically connected to the electrical component in the accommodating cavity.

17. An electrical equipment, characterized in that: Including the battery according to claim 16, and the battery is used for providing electric energy.

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