Power distribution box, battery, and electric device

Abstract

The present disclosure relates to a power distribution box, a battery, and an electric device. The power distribution box comprises an outer box, a connection assembly, and a power distribution element; an outer housing comprises a first housing and a second housing opposite to each other in a first direction; the connection assembly is provided on the first housing; the connection assembly comprises a first terminal; the first terminal comprises a first connection portion; the power distribution element is provided on the second housing; the power distribution element comprises a second terminal; the second terminal comprises a second connection portion; and the first connection portion and the second connection portion are in contact with each other and are electrically connected. By making the first connection portion and the second connection portion in contact with each other, the first connection portion can be directly connected to the second connection portion, and an intermediate connecting component is omitted, thereby simplifying the assembly operation and improving the assembly efficiency.

Description

Power distribution box, battery and electrical equipment

[0001] The present disclosure is based on and claims priority to the Chinese application No. 202410844440.9, filed on June 27, 2024, the disclosure of which is hereby incorporated by reference in its entirety into the present disclosure. TECHNICAL FIELD

[0002] The present disclosure relates to the technical field of battery, in particular to a power distribution box, a battery and an electrical equipment. BACKGROUND

[0003] Energy saving and emission reduction is the key to the sustainable development of the automobile industry. Electric vehicles have become an important part of the sustainable development of the automobile industry due to their energy saving and environmental protection advantages. For electric vehicles, battery technology is an important factor for their development.

[0004] The power distribution box is arranged inside the battery, and the assembly efficiency of the internal components of the power distribution box directly affects the overall assembly efficiency of the battery.

[0005] The above statements are only used to provide background technical information related to the present disclosure, and do not necessarily constitute the prior art. SUMMARY

[0006] The present disclosure provides a power distribution box, a battery and an electrical equipment, which can effectively improve the assembly efficiency of the power distribution box.

[0007] In a first aspect, the present disclosure provides a power distribution box, comprising an outer box, a connecting assembly and a power distribution element, the outer box comprising a first shell and a second shell opposite along a first direction, the connecting assembly being arranged in the first shell, the connecting assembly comprising a first terminal, the first terminal comprising a first connecting part, the power distribution element being arranged in the second shell, the power distribution element comprising a second terminal, the second terminal comprising a second connecting part, the first connecting part and the second connecting part being in contact with each other and electrically connected.

[0008] By directly contacting the first connecting part and the second connecting part with each other, the first connecting part and the second connecting part can be directly connected, thereby avoiding the intermediate connecting part, and further avoiding the problem of easy tilting caused by the need to insert the first connecting part into the intermediate connecting part and insert the second connecting part into the intermediate connecting part, which is conducive to reducing the assembly failure rate and improving the assembly efficiency. After omitting the intermediate connecting part, the structure can be simplified, the assembly operation can be reduced, and the cost can be saved.

[0009] Meanwhile, the first connecting part and the second connecting part are in contact with each other and electrically connected, so that the connecting assembly and the power distribution element can be connected in power through the contact and electrical connection of the first connecting part and the second connecting part, and the power transmission is completed.

[0010] In some embodiments, the first connecting portion comprises a first surface in contact with the second connecting portion, the first surface is inclined relative to the first direction, and the second connecting portion comprises a second surface in contact with the first connecting portion, the second surface is inclined relative to the first direction.

[0011] By setting the first surface to be inclined relative to the first direction, and setting the second surface to be inclined relative to the first direction, when the first connecting portion and the second connecting portion are in contact after the first shell and the second shell are closed, the first connecting portion and the second connecting portion can be subjected to downward component force, which is conducive to realizing close contact between the first connecting portion and the second connecting portion, thereby improving the reliability and stability of subsequent connection.

[0012] In some embodiments, the first connecting portion comprises a first surface in contact with the second connecting portion, the first surface is perpendicular to the first direction, and the second connecting portion comprises a second surface in contact with the first connecting portion, the second surface is perpendicular to the first direction.

[0013] By setting the first surface and the second surface to be perpendicular to the first direction, the connection operation between the first surface and the second surface can be performed in a direction perpendicular to the first direction. Since the first shell and the second shell are arranged relative to each other along the first direction, there is more operation space in the direction perpendicular to the first direction than in the first direction, which can effectively improve the convenience of operation and facilitate the assembly efficiency.

[0014] In some embodiments, the leading direction of the first terminal from the connecting assembly is parallel to the first direction; and / or, the leading direction of the second terminal from the power distribution element is parallel to the first direction.

[0015] By setting the leading direction of the first terminal from the connecting assembly to be parallel to the first direction, the arrangement of the coil in the connecting assembly can be facilitated, and the first terminal can be led out along the winding direction of the coil, thereby avoiding the influence of the leading of the first terminal on the winding of the coil.

[0016] By setting the leading direction of the second terminal from the power distribution element to be parallel to the first direction, the arrangement of the coil in the power distribution element can be facilitated, and the second terminal can be led out along the winding direction of the coil, thereby avoiding the influence of the leading of the second terminal on the winding of the coil.

[0017] In some embodiments, the first terminal is bent after being led out from the power distribution element, so that the first connecting portion is perpendicular to the first direction; and / or, the second terminal is bent after being led out from the power distribution element, so that the second connecting portion is perpendicular to the first direction.

[0018] By bending the first terminal after being led out from the power distribution element, the first connecting portion can be bent to a position perpendicular to the first direction, thereby facilitating the subsequent assembly of connection.

[0019] By bending the second terminal after being led out from the power distribution element, the second connecting part can be bent to a position perpendicular to the first direction, thereby facilitating the subsequent assembly of the connection.

[0020] In order to keep the first connecting part and the second connecting part in a posture perpendicular to the first direction, the first terminal and the second terminal are led out and then bent, which can not affect the winding of the coil inside the connection assembly and the power distribution element, and can facilitate the subsequent contact and connection of the first connecting part and the second connecting part.

[0021] In some embodiments, the power distribution element includes a third surface close to the connection assembly, and the second terminal is led out from the third surface.

[0022] By leading the second terminal out from the third surface close to the connection assembly, the distance between the second terminal and the first terminal can be shortened, the intermediate adapter component can be omitted, and the connection difficulty between the second terminal and the first terminal can be reduced.

[0023] In some embodiments, a projection of the second connecting part on the third surface is within the range of the third surface.

[0024] The projection of the second connecting part on the third surface is within the range of the third surface, that is, the projection of the second connecting part on the third surface is within the range surrounded by the edges of the third surface. This embodiment can facilitate the case that the coil is arranged close to the middle position of the third surface. In this case, arranging the second connecting part within the projection on the third surface can avoid the problem of lengthening the connecting part caused by extending the second connecting part beyond the third surface.

[0025] In some embodiments, the power distribution box further includes a first support member arranged between the third surface and the second connecting part.

[0026] By arranging the first support member, the bent second connecting part can be supported, and the stability of the second connecting part can be avoided.

[0027] In some embodiments, the power distribution box further includes a first connecting member, the second connecting part is provided with a first connecting hole, the first support member is provided with a second connecting hole, the hole wall of the second connecting hole is provided with a thread, the first connecting part is provided with a third connecting hole, the outer part of the first connecting member is provided with a thread, and the first connecting member passes through the third connecting hole and the first connecting hole and is inserted into the second connecting hole to be threadedly connected with the first support member.

[0028] By setting the first connecting piece, the first connecting part and the second connecting part can be connected and fixed through thread cooperation. Meanwhile, by setting the first support piece and setting the second connecting hole with internal threads on the first support piece, the first connecting piece is inserted into the second connecting hole, which can increase the length of the thread connection part, thereby effectively improving the stability and reliability of the connection.

[0029] In some embodiments, the projection of the second connecting part on the third surface includes a portion outside the range of the third surface.

[0030] The projection of the second connecting part on the third surface includes a portion outside the range of the third surface, i.e., a part of the projection of the second connecting part on the third surface is outside the edge of the third surface. This embodiment can facilitate the case where the coil is arranged close to the edge of the third surface. In this case, the second connecting part is also extended outside the third surface, avoiding interference between the second connecting part and the connecting structure of the first connecting part and the components inside the third surface.

[0031] In some embodiments, the power distribution box further includes a second support piece arranged on the side of the third surface, and the second support piece is configured to support the second connecting part.

[0032] By arranging the second support piece on the side of the third surface, support can be provided for the second connecting part, avoiding the second connecting part being suspended and reducing stability.

[0033] In some embodiments, the power distribution box further includes a second connecting piece and a third connecting piece, the second connecting part is provided with a first connecting hole, the second support piece is provided with a fourth connecting hole, the second connecting piece is inserted into the first connecting hole and the fourth connecting hole, and the second connecting piece is provided with a fifth connecting hole with internal threads, the first connecting part is provided with a third connecting hole, the third connecting piece is provided with external threads, and the third connecting piece is inserted into the fifth connecting hole through the third connecting hole to be threadedly connected with the second connecting piece.

[0034] By setting the second connecting piece, the second connecting piece can be inserted into the first connecting hole and the fourth connecting hole and provided with the fifth connecting hole with internal threads, thereby facilitating the insertion of the third connecting piece, increasing the length of the thread connection, and improving the stability and reliability of the connection between the first connecting part and the second connecting part.

[0035] In some embodiments, the fourth connecting hole is a blind hole, and the second support piece is provided with a through hole, one end of the through hole being communicated with the fourth connecting hole, and the other end of the through hole being communicated with the outside of the second support piece.

[0036] By setting the fourth connecting hole as a blind hole, the overall structural strength of the second support piece can be improved.

[0037] By setting the through hole, the fourth connecting hole can be kept in communication with the outside, facilitating the taking out of the component after injection molding, and personnel or tools can enter the fourth connecting hole to operate the third connecting piece.

[0038] In some embodiments, the power distribution box further comprises a support seat and a fourth connecting piece, the support seat comprises an inner wall, an outer wall and a support portion arranged between the inner wall and the outer wall, the inner wall surrounds to form a containing cavity, the power distribution element is arranged in the containing cavity, the support portion is provided with a sixth connecting hole with internal threads, the second connecting portion is provided with a first connecting hole, the first connecting portion is provided with a third connecting hole, the fourth connecting piece is provided with external threads, and the fourth connecting piece is inserted into the sixth connecting hole through the third connecting hole and the first connecting hole to be threadedly connected with the support portion.

[0039] By setting the support seat and surrounding the containing cavity by the inner wall, a containing space can be provided for the power distribution element, which can also limit the position of the power distribution element to prevent the power distribution element from moving.

[0040] By setting the support seat as a double-layer structure comprising the inner wall and the outer wall, the support portion can be conveniently arranged between the inner wall and the outer wall, and the sixth connecting hole with internal threads is provided by the support portion, facilitating the insertion of the fourth connecting piece, improving the length of the threaded connection, and improving the stability and reliability of the connection of the first connecting portion and the second connecting portion.

[0041] Meanwhile, the inner wall, the outer wall and the support portion can also be used to support the first connecting portion and the second connecting portion, thereby improving the stability of the first connecting portion and the second connecting portion.

[0042] In some embodiments, the first connecting portion and the second connecting portion are adhesively connected or welded.

[0043] The adhesively connected or welded first connecting portion and second connecting portion can improve the convenience of connection, facilitate implementation and have high feasibility.

[0044] In some embodiments, the power distribution element comprises at least one of a main relay, a pre-charging relay and a pre-charging resistor.

[0045] In a second aspect, the present disclosure provides a battery comprising a box body and the above-mentioned power distribution box, and the power distribution box is arranged in the box body.

[0046] In a third aspect, the present disclosure provides a power consumption device comprising the above-mentioned battery, and the battery is used to supply electric energy to the power consumption device.

[0047] The above description is only a summary of the technical solutions of the present disclosure, in order to more clearly understand the technical means of the present disclosure, the specific embodiments of the present disclosure can be implemented in accordance with the content of the description, and in order to make the above and other purposes, features and advantages of the present disclosure more obvious and easy to understand, the specific embodiments of the present disclosure are described below. Attached Figure Description

[0048] To more clearly illustrate the technical solutions of the embodiments of this disclosure, the accompanying drawings used in the embodiments of this disclosure will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on the drawings without creative effort.

[0049] Figure 1 is a schematic diagram of the structure of some embodiments of the electrical equipment provided in this disclosure.

[0050] Figure 2 is a schematic diagram of the structure of some embodiments of the battery provided in this disclosure.

[0051] Figure 3 is a top view of some embodiments of the power distribution box provided in this disclosure.

[0052] Figure 4 is an exploded view of some embodiments of the power distribution box provided in this disclosure.

[0053] Figure 5 is a schematic diagram of the first structure of the main relay as the power distribution element in some embodiments of the power distribution box provided in this disclosure.

[0054] Figure 6 is a schematic diagram of the second structure of the main relay as the power distribution element in some embodiments of the power distribution box provided in this disclosure.

[0055] Figure 7 is an enlarged view of the part indicated by label A in Figure 6.

[0056] Figure 8 is a schematic diagram of a pre-charged relay as the power distribution element in some embodiments of the power distribution box provided in this disclosure.

[0057] Figure 9 is a schematic diagram of the assembly structure of a pre-charged relay as the power distribution element in some embodiments of the power distribution box provided in this disclosure.

[0058] Figure 10 is a cross-sectional view along section BB of the embodiment in Figure 9.

[0059] Figure 11 is a schematic diagram of the structure of a pre-charged resistor as the power distribution element in some embodiments of the power distribution box provided in this disclosure.

[0060] The accompanying drawings are not drawn to scale.

[0061] Label description: 1000, vehicle; 100, battery; 200, controller; 300, motor; 10, distribution box; 20, box body; 201, first cover; 202, second cover; 30, battery monomer; 1, shell; 11, first shell; 12, second shell; 2, connecting assembly; 21, first terminal; 211, first connecting part; 2111, first surface; 2112, third connecting hole; 3, distribution element; 3a, main relay; 3b, pre-charge relay; 3c, pre-charge resistor; 31, second terminal; 311, second connecting part; 3111, second surface; 3112, first connecting hole; 32, third surface; 4, first support; 41, second connecting hole; 5, first connecting piece; 6, second support; 61, fourth connecting hole; 62, through hole; 7, second connecting piece; 71, fifth connecting hole; 8, third connecting piece; 9, support seat; 91, inner wall; 92, outer wall; 93, support part; 931, sixth connecting hole; 94, accommodating cavity; 95, hollow part; 10a, fourth connecting piece. DETAILED DESCRIPTION

[0062] The embodiments of the technical solutions of the present disclosure will be described in detail below with reference to the drawings. The following embodiments are only used to more clearly illustrate the technical solutions of the present disclosure, and therefore only serve as examples, and cannot limit the protection scope of the present disclosure.

[0063] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit the present disclosure; the terms "include" and "have" and any variations thereof in the specification and claims of the present disclosure and the above description of drawings are intended to cover non-exclusive inclusion.

[0064] In the description of the embodiments of the present disclosure, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In addition, the term "vertical" is not strictly vertical, but within the allowable range of error. "Parallel" is not strictly parallel, but within the allowable range of error.

[0065] Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the present disclosure. The appearance of this phrase in various places in the specification does not necessarily all refer to the same embodiment, nor is it necessarily a separate or alternative embodiment to other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0066] In the description of the embodiments of the present disclosure, the term "and / or" is merely an association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B, which can represent the three cases of A existing alone, A and B existing together, and B existing alone. In addition, the character " / " herein generally represents an "or" relationship between the front and rear associated objects.

[0067] In the description of the embodiments of the present disclosure, the term "a plurality of" refers to two or more, unless otherwise explicitly specified. Similarly, "a plurality of groups" refers to two or more groups, and "a plurality of pieces" refers to two or more pieces, unless otherwise explicitly specified.

[0068] In the description of the embodiments of the present disclosure, the technical terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like indicate the orientation or positional relationship shown in the drawings, which are only for the convenience of describing the embodiments of the present disclosure and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the embodiments of the present disclosure.

[0069] In the description of the embodiments of the present disclosure, unless otherwise explicitly specified and limited, the technical terms "mounting", "connection", "connection", "fixing", and the like should be understood in a broad sense, for example, can be fixedly connected, can also be detachably connected, or integrally connected; can be mechanically connected, or can be electrically connected; can be directly connected, or can be indirectly connected through an intermediate medium; can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the embodiments of the present disclosure can be understood according to the specific circumstances.

[0070] At present, from the development of market situation, the application of power battery is more and more extensive. The power battery is not only applied to energy storage power supply systems such as hydroelectric, thermal, wind and solar power stations, but also widely used in electric bicycles, electric motorcycles, electric vehicles and other electric vehicles, military equipment, aerospace and other fields. With the continuous expansion of the application field of power battery, the market demand is also increasing.

[0071] With the continuous expansion of the market demand for batteries, high requirements are put forward for the manufacturing efficiency of batteries. The distribution box is one of the important components inside the battery, and the distribution box is a control unit for distributing the energy of the battery, which has an important influence on the reliable operation of the whole battery. In the assembly of the distribution box, a plurality of distribution elements need to be connected with the terminal, and the assembly efficiency of the distribution box will affect the economic benefit of the whole battery.

[0072] At present, the terminals in the distribution box protrude from the surface of the shell by a certain size to facilitate connection with the distribution element. In the connection process of the terminal and the distribution element, an intermediate terminal is usually used as an intermediate connecting component, such as inserting the terminal into the first slot of the intermediate terminal and inserting the connecting end of the distribution element into the second slot of the intermediate terminal. Although this assembly method can ensure the stability of the terminal, it is prone to skew when inserting the terminal into the intermediate terminal and inserting the connecting end of the distribution element into the intermediate terminal, and it is difficult to automate the assembly, the assembly failure rate is high, and the assembly efficiency is low.

[0073] Therefore, the structure of the distribution box is improved in the present disclosure. In the distribution box embodiment provided by the present disclosure, the connecting assembly includes a first terminal including a first connecting portion, and the distribution element includes a second terminal including a second connecting portion, and the first connecting portion and the second connecting portion are in contact and electrically connected with each other. By setting the first connecting portion and the second connecting portion to be in contact with each other, the intermediate connecting piece can be omitted, and the first connecting portion and the second connecting portion can be directly connected, thereby effectively avoiding the problem of easy skewing caused by the need to insert the first connecting portion into the intermediate connecting piece and insert the second connecting portion into the intermediate connecting piece, which is conducive to reducing the assembly failure rate and improving the assembly efficiency.

[0074] The distribution box embodiment provided by the present disclosure can be applied to a battery to improve the overall assembly efficiency of the battery and improve the economic benefit of the battery.

[0075] The battery disclosed in the embodiments of the present disclosure can be used in, but is not limited to, an electric device such as a vehicle, a ship or an aircraft. A power supply system of the electric device can be composed of the battery disclosed in the present disclosure, so that the overall assembly efficiency of the battery can be effectively improved to meet the requirement of manufacturing efficiency.

[0076] The embodiments of the present disclosure provide an electric device using a battery as a power supply, and the battery is configured to provide electric energy to the electric device. The electric device can be, but is not limited to, a mobile phone, a portable device, a notebook computer, an electric vehicle, an electric automobile, a ship, a spacecraft, an electric toy and an electric tool, etc. For example, the spacecraft includes an airplane, a rocket, a space shuttle and a spacecraft, etc. The electric toy includes a fixed or mobile electric toy, such as a game console, an electric automobile toy, an electric ship toy and an electric airplane toy, etc. The electric tool includes a metal cutting electric tool, a grinding electric tool, an assembly electric tool and a railway electric tool, such as an electric drill, an electric grinder, an electric wrench, an electric screwdriver, an electric hammer, an impact drill, a concrete vibrator and an electric planer.

[0077] The following embodiments take a vehicle 1000 as an example for convenience of description.

[0078] Please refer to FIG. 1, which is a structural schematic diagram of a vehicle 1000 provided by some embodiments of the present disclosure. The vehicle 1000 can be a fuel automobile, a gas automobile, or a new energy automobile, and the new energy automobile can be a pure electric automobile, a hybrid automobile, or a range extended automobile, etc. The vehicle 1000 is internally provided with a battery 100, which can be arranged at the bottom, the head, or the tail of the vehicle 1000. The battery 100 can be used for power supply of the vehicle 1000, for example, the battery 100 can be used as an operating power supply of the vehicle 1000. The vehicle 1000 can further include a controller 200 and a motor 300, and the battery 100 is used to provide electric energy for the operation of the motor 300 and other components in the vehicle, and the controller 200 is used to control the operation of the motor 300, for example, the working power demand of the vehicle 1000 during starting, navigation, and driving.

[0079] In some embodiments of the present disclosure, the battery 100 can not only be used as an operating power supply of the vehicle 1000, but also be used as a driving power supply of the vehicle 1000, to replace or partially replace fuel or natural gas to provide driving power for the vehicle 1000.

[0080] Please refer to FIG. 2, which is an exploded view of the battery 100 provided by some embodiments of the present disclosure. The battery 100 includes a power distribution box 10, a box body 20, and a battery cell 30, and the battery cell 30 is contained in the box body 20. Among them, the box body 20 is used to provide a containing space for the battery cell 30, and the box body 20 can adopt various structures. In some embodiments, the box body 20 can include a first cover 201 and a second cover 202, and the first cover 201 and the second cover 202 are mutually covered to jointly define a containing space for containing the battery cell 30. The second cover 202 can be a hollow structure with one end open, and the first cover 201 can be a plate structure, which is covered on the open side of the second cover 202 to jointly define the containing space with the second cover 202; the first cover 201 and the second cover 202 can also be hollow structures with one side open, and the open side of the first cover 201 is covered on the open side of the second cover 202. Of course, the box body 20 formed by the first cover 201 and the second cover 202 can be various shapes, such as a cylinder, a cuboid, etc.

[0081] In the battery 100, the battery cells 30 can be multiple, and the multiple battery cells 30 can be connected in series or in parallel or in a mixed manner. The mixed manner means that the multiple battery cells 30 are connected in series and in parallel. The multiple battery cells 30 can be directly connected in series or in parallel or in a mixed manner, and then the multiple battery cells 30 are accommodated in the box body 20 as a whole. Of course, the battery 100 can also be that the multiple battery cells 30 are connected in series or in parallel or in a mixed manner to form a battery module, and then the multiple battery modules are connected in series or in parallel or in a mixed manner to form a whole and are accommodated in the box body 20. The battery 100 can also include other structures, for example, the battery 100 can also include a current collecting component for realizing the electrical connection between the multiple battery cells 30.

[0082] The battery cell 30 includes a lithium ion secondary battery, a lithium ion primary battery, a lithium-sulfur battery, a sodium lithium ion battery, a sodium ion battery, or a magnesium ion battery, and the like, and the embodiments of the present disclosure are not limited thereto. The battery cell can be in the shape of a cylinder, a flat body, a cuboid, or other shapes, and the embodiments of the present disclosure are not limited thereto. The battery cell is generally divided into three types according to the packaging method: cylindrical battery cells, square battery cells, and soft package battery cells, and the embodiments of the present disclosure are not limited thereto.

[0083] Referring to FIGS. 3 and 4, the top view and the exploded view of some embodiments of the power distribution box provided by the present disclosure are shown. In the embodiments of the power distribution box provided by the present disclosure, the power distribution box 10 includes a housing 1, a connecting assembly 2, and a power distribution element 3. The housing 1 includes a first housing 11 and a second housing 12 opposite in a first direction. The connecting assembly 2 is arranged in the first housing 11, and the connecting assembly 2 includes a first terminal 21 including a first connecting portion 211. The power distribution element 3 is arranged in the second housing 12, and the power distribution element 3 includes a second terminal 31 including a second connecting portion 311. The first connecting portion 211 and the second connecting portion 311 are in contact with and electrically connected to each other.

[0084] By directly contacting the first connecting portion 211 and the second connecting portion 311 with each other, the first connecting portion 211 and the second connecting portion 311 can be directly connected, thereby avoiding the intermediate connecting component, and further avoiding the problem that the first connecting portion is easily inclined when being inserted into the intermediate connecting member and the second connecting portion is easily inclined when being inserted into the intermediate connecting member. This is conducive to reducing the assembly failure rate and improving the assembly efficiency. After omitting the intermediate connecting component, the structure can be simplified, the assembly operation can be reduced, and the cost can be saved.

[0085] Meanwhile, the first connecting portion 211 and the second connecting portion 311 are in contact with and electrically connected to each other, so that the connecting assembly 2 and the power distribution element 3 can be connected in power through the contact and electrical connection of the first connecting portion 211 and the second connecting portion 311, and the power transmission is completed.

[0086] In some embodiments, at least one of the first shell 11 and the second shell 12 has a containing space, and the containing cavity is formed inside after the first shell 11 and the second shell 12 are closed, and the connection assembly 2 and the power distribution element 3 are arranged in the containing cavity to protect the connection assembly 2 and the power distribution element 3 by the first shell 11 and the second shell 12.

[0087] In some embodiments, one of the first shell 11 and the second shell 12 can be a cover body, and the other shell is closed by the cover body to realize the closure of the containing cavity.

[0088] In other embodiments, the first shell 11 and the second shell 12 can only wrap a part of the connection assembly 2 or the power distribution element 3 to realize the protection of the part of the protected part.

[0089] Referring to FIGS. 5-11, in some embodiments, the first connecting portion 211 includes a first surface 2111 in contact with the second connecting portion 311, and the first surface 2111 is inclined relative to the first direction, and the second connecting portion 311 includes a second surface 3111 in contact with the first connecting portion 211, and the second surface 3111 is inclined relative to the first direction.

[0090] The first surface 2111 is inclined relative to the first direction, so the first surface 2111 is not parallel to the first direction. The second surface 3111 is inclined relative to the first direction, so the second surface 3111 is not parallel to the first direction.

[0091] By setting the first surface 2111 to be inclined relative to the first direction, and setting the second surface 3111 to be inclined relative to the first direction, when the first connecting portion 211 and the second connecting portion 311 are in contact after the first shell 11 and the second shell 12 are closed, the first connecting portion 211 and the second connecting portion 311 can be subjected to a downward component force, which is beneficial to realize the close contact between the first connecting portion 211 and the second connecting portion 311, thereby improving the reliability and stability of the subsequent connection.

[0092] The inclination angle of the first surface 2111 relative to the first direction can be an acute angle or an obtuse angle, and the inclination angle of the second surface 3111 relative to the first direction can also be an acute angle or an obtuse angle.

[0093] In some embodiments, the first connecting portion 211 includes a first surface 2111 in contact with the second connecting portion 311, and the first surface 2111 is perpendicular to the first direction, and the second connecting portion 311 includes a second surface 3111 in contact with the first connecting portion 211, and the second surface 3111 is perpendicular to the first direction.

[0094] The first surface 2111 and the second surface 3111 are both arranged to be perpendicular to the first direction, so that the connecting operation between the first surface 2111 and the second surface 3111 is performed in a direction perpendicular to the first direction. Since the first shell 11 and the second shell 12 are arranged relative to each other along the first direction, there is a larger operation space in the direction perpendicular to the first direction than in the first direction, which can effectively improve the convenience of operation and improve the assembly efficiency.

[0095] In some embodiments, the first terminal 21 is arranged to be parallel to the first direction from the connection assembly 2; and / or, the second terminal 31 is arranged to be parallel to the first direction from the power distribution element 3.

[0096] As shown in FIG. 4 and FIG. 5, the first terminal 21 is arranged to be parallel to the first direction from the connection assembly 2, which facilitates the arrangement of the coil in the connection assembly 2, and the first terminal 21 is arranged to be along the winding direction of the coil, avoiding the influence of the first terminal 21 on the winding of the coil.

[0097] The second terminal 31 is arranged to be parallel to the first direction from the power distribution element 3, which facilitates the arrangement of the coil in the power distribution element 3, and the second terminal 31 is arranged to be along the winding direction of the coil, avoiding the influence of the second terminal 31 on the winding of the coil.

[0098] In some embodiments, the first terminal 21 is bent after being arranged to be from the power distribution element 3, so that the first connecting portion 211 is perpendicular to the first direction; and / or, the second terminal 31 is bent after being arranged to be from the power distribution element 3, so that the second connecting portion 311 is perpendicular to the first direction.

[0099] By bending the first terminal 21 after being arranged to be from the power distribution element 3, the first connecting portion 211 can be bent to a position perpendicular to the first direction, which facilitates the subsequent connection assembly.

[0100] By bending the second terminal 31 after being arranged to be from the power distribution element 3, the second connecting portion 311 can be bent to a position perpendicular to the first direction, which facilitates the subsequent connection assembly.

[0101] In order to keep the first connecting portion 211 and the second connecting portion 311 in a position perpendicular to the first direction, the first terminal 21 and the second terminal 31 are arranged to be from the power distribution element 3 and then bent, which can not only avoid the influence of the first terminal 21 and the second terminal 31 on the winding of the coil in the connection assembly 2 and the power distribution element 3, but also facilitate the subsequent contact and connection of the first connecting portion 211 and the second connecting portion 311.

[0102] In some embodiments, the power distribution element 3 includes a third surface 32 close to the connection assembly 2, and the second terminal 31 is arranged to be from the third surface 32.

[0103] By leading the second terminal 31 from the third surface 32 close to the connection assembly 2, the distance between the second terminal 31 and the first terminal 21 can be shortened, the intermediate adapter component can be omitted, and the connection difficulty between the second terminal 31 and the first terminal 21 can be reduced.

[0104] In some embodiments, the projection of the second connecting portion 311 on the third surface 32 is within the range of the third surface 32.

[0105] In the embodiment as shown in FIG. 5, the projection of the second connecting portion 311 on the third surface 32 is within the range of the third surface 32, i.e., the projection of the second connecting portion 311 on the third surface 32 is within the edge of the third surface 32 and the range surrounded by the edge. This embodiment can facilitate the case that the coil is arranged close to the middle position of the third surface 32. In this case, by arranging the second connecting portion 311 within the projection on the third surface 32, the problem of lengthening of the connecting portion caused by extending the second connecting portion 311 out of the third surface 32 can be avoided.

[0106] In some embodiments, the power distribution box 10 further comprises a first support 4, which is arranged between the third surface 32 and the second connecting portion 311.

[0107] By arranging the first support 4, the second connecting portion 311 after being bent can be supported, so as to avoid the second connecting portion 311 being suspended and affecting the stability of the second connecting portion 311.

[0108] The shape of the first support 4 can be various, such as a cuboid shape, a cylindrical shape, etc.

[0109] The first support 4 can be independent of the power distribution element 3, or can be integrally formed with the power distribution element 3. For example, the first support 4 can be a protruding portion on the power distribution element 3.

[0110] In some embodiments, the power distribution box 10 further comprises a first connecting member 5, the second connecting portion 311 is provided with a first connecting hole 3112, the first support 4 is provided with a second connecting hole 41, the hole wall of the second connecting hole 41 is provided with a thread, the first connecting portion 211 is provided with a third connecting hole 2112, the outside of the first connecting member 5 is provided with a thread, and the first connecting member 5 passes through the third connecting hole 2112 and the first connecting hole 3112 and is inserted into the second connecting hole 41 to be threadedly connected with the first support 4.

[0111] By setting the first connecting member 5, the first connecting part 211 and the second connecting part 311 can be connected and fixed through thread cooperation. At the same time, by setting the first support member 4 and setting the second connecting hole 41 with internal threads on the first support member 4, the first connecting member 5 is inserted into the second connecting hole 41, which can increase the length of the threaded connection part, thereby effectively improving the stability and reliability of the connection.

[0112] The first connecting member 5 can be a screw or a bolt.

[0113] In some embodiments, the projection of the second connecting part 311 on the third surface 32 includes a part outside the range of the third surface 32.

[0114] As shown in FIGS. 6 and 7, the projection of the second connecting part 311 on the third surface 32 includes a part outside the range of the third surface 32, i.e., a part of the projection of the second connecting part 311 on the third surface 32 is outside the edge of the third surface 32. This embodiment can facilitate the case where the coil is arranged close to the edge of the third surface 32. In this case, the second connecting part 311 is also extended outside the third surface 32, avoiding interference between the second connecting part 311 and the connecting structure with the first connecting part 211 and the components inside the third surface 32.

[0115] In some embodiments, the power distribution box 10 further includes a second support member 6 arranged on the side of the third surface 32, and the second support member 6 is configured to support the second connecting part 311.

[0116] As shown in FIG. 7, by arranging the second support member 6 on the side of the third surface 32, support can be provided for the second connecting part 311, avoiding the second connecting part 311 being suspended and reducing stability.

[0117] The second support member 6 can be connected with the power distribution element 3, or the second support member 6 is integrally formed with the power distribution element 3.

[0118] In the embodiment as shown in FIG. 7, the second support member 6 is an extension of the raised frame arranged on the third surface 32, and the second support member 6 is formed by extending outward from the raised frame.

[0119] The second support member 6 can be an injection molded part.

[0120] In some embodiments, the power distribution box 10 further comprises a second connecting piece 7 and a third connecting piece 8, the second connecting part 311 is provided with a first connecting hole 3112, the second support 6 is provided with a fourth connecting hole 61, the second connecting piece 7 is inserted into the first connecting hole 3112 and the fourth connecting hole 61, and the second connecting piece 7 is provided with a fifth connecting hole 71 with internal threads, the first connecting part 211 is provided with a third connecting hole 2112, the third connecting piece 8 is provided with external threads, and the third connecting piece 8 is inserted into the fifth connecting hole 71 through the third connecting hole 2112 to be threadedly connected with the second connecting piece 7.

[0121] By providing the second connecting piece 7, the second connecting piece 7 can be inserted into the first connecting hole 3112 and the fourth connecting hole 61 and provided with the fifth connecting hole 71 with internal threads, thereby facilitating the insertion of the third connecting piece 8, increasing the length of the threaded connection, and improving the stability and reliability of the connection between the first connecting part 211 and the second connecting part 311.

[0122] In some embodiments, the fourth connecting hole 61 is a blind hole, the second support 6 is provided with a through hole 62, one end of the through hole 62 communicates with the fourth connecting hole 61, and the other end of the through hole 62 communicates with the outside of the second support 6.

[0123] By setting the fourth connecting hole 61 as a blind hole, the overall structural strength of the second support 6 can be avoided from being reduced due to the fourth connecting hole 61 being a through hole.

[0124] By providing the through hole 62, the fourth connecting hole 61 can be kept in communication with the outside, facilitating the removal of the component after injection molding, and personnel or tools can also be conveniently used to enter the fourth connecting hole 61 to perform corresponding operations on the third connecting piece 8.

[0125] In some embodiments, the outlet of the through hole 62 is located on the side of the second support 6 away from the power distribution element 3. The axis of the through hole 62 is perpendicular to the axis of the fourth connecting hole 61.

[0126] The shape of the through hole 62 can be variously selected, such as circular or square, etc.

[0127] In some embodiments, the power distribution box 10 further comprises a support seat 9 and a fourth connecting piece 10a, the support seat 9 comprises an inner wall 91, an outer wall 92, and a support part 93 provided between the inner wall 91 and the outer wall 92, the inner wall 91 surrounds to form a containing cavity 94, the power distribution element 3 is arranged in the containing cavity 94, the support part 93 is provided with a sixth connecting hole 931 with internal threads, the second connecting part 311 is provided with a first connecting hole 3112, the first connecting part 211 is provided with a third connecting hole 2112, the fourth connecting piece 10a is provided with external threads, and the fourth connecting piece 10a is inserted into the sixth connecting hole 931 through the third connecting hole 2112 and the first connecting hole 3112 to be threadedly connected with the support part 93.

[0128] As shown in FIGS. 8-10, by providing the support seat 9 and by enclosing the accommodating cavity 94 with the inner wall 91, an accommodating space can be provided for the power distribution element 3, which can also limit the position of the power distribution element 3 and prevent the power distribution element 3 from moving.

[0129] By providing the support seat 9 as a double-layer structure including the inner wall 91 and the outer wall 92, it is convenient to provide the support part 93 between the inner wall 91 and the outer wall 92, and then to provide the sixth connecting hole 931 with internal threads through the support part 93, facilitate the insertion of the fourth connecting piece 10a, increase the length of the threaded connection, and improve the stability and reliability of the connection of the first connecting part 211 and the second connecting part 311.

[0130] At the same time, the inner wall 91, the outer wall 92 and the support part 93 can also be used to support the first connecting part 211 and the second connecting part 311, thereby improving the stability of the first connecting part 211 and the second connecting part 311.

[0131] In some embodiments, the first connecting part 211 and the second connecting part 311 are adhesively connected or welded.

[0132] The first connecting part 211 and the second connecting part 311 are adhesively connected or welded, which can improve the convenience of connection, facilitate implementation, and have high feasibility.

[0133] In some embodiments, the power distribution element 3 includes at least one of a main relay 3a, a pre-charge relay 3b, and a pre-charge resistor 3c.

[0134] The relay is a kind of switching device, mainly used for controlling the switching of the circuit, so that the circuit can operate normally. The main relay 3a includes a main positive relay arranged on the positive side of the high-voltage system and a main negative relay arranged on the negative side of the high-voltage system. By controlling the switching state of the main relay 3a, automatic control of the circuit can be realized.

[0135] The pre-charge relay 3b is a relay for controlling the opening and closing of the pre-charge circuit, i.e. before the main relay works, the pre-charge circuit is turned on for self-checking.

[0136] The pre-charge relay 3b can play a role of pre-charging in the circuit, and through pre-charging when the vehicle starts, the capacitor can be fully charged, and when the system switch starts, the charge of the capacitor is slowly released to the switch circuit, so as to reduce the load of the switch and the voltage drop. The pre-charge relay 3b controls the charging and discharging process of the capacitor, so as to achieve more stable power transmission and higher battery life.

[0137] The pre-charge resistor 3c is equivalent to a protection resistor, which has a current limiting effect, and can effectively prevent other electronic elements in the high-voltage system from being damaged by large current in the power-on moment.

[0138] The pre-charge resistor 3c is used in pairs with the pre-charge relay 3b. The pre-charge resistor 3c can pre-charge the capacitor when the device accesses the circuit, so as to ensure that the voltage of the capacitor gradually rises, thereby avoiding damage to the capacitor caused by too rapid rise of the device voltage.

[0139] Of course, in other embodiments, in addition to the main relay 3a, the pre-charge relay 3b and the pre-charge resistor 3c, the power distribution element can also be other elements that can be connected in the connection manner provided by the embodiments of the present disclosure in the power distribution box, which will not be described in detail here.

[0140] The structure of some embodiments of the power distribution box provided by the present disclosure will be introduced below in combination with FIGS. 3 to 11.

[0141] As shown in FIGS. 3 and 4, the power distribution box 10 includes a housing 1, a connection assembly 2 and a power distribution element 3.

[0142] The housing 1 includes a first shell 11 and a second shell 12, and the first shell 11 and the second shell 12 are arranged opposite to each other along a first direction. The connection assembly 2 is arranged in the first shell 11, and the power distribution element 3 is arranged in the second shell 12.

[0143] The connection assembly 2 includes a plurality of connection terminals connected with other components such as the power distribution element 3.

[0144] The power distribution element 3 can include a main relay 3a, a pre-charge relay 3b and a pre-charge resistor 3c.

[0145] In the embodiment as shown in FIG. 4, the second shell 12 is provided with two main relays 3a, one pre-charge relay 3b and one pre-charge resistor 3c.

[0146] The two main relays 3a each have four terminals connected with the connection assembly 2. The pre-charge relay 3b has four connection terminals, and the pre-charge resistor 3c has two connection terminals. One of the terminals of the pre-charge resistor 3c is connected with one of the terminals of the pre-charge relay 3b, the other terminal of the pre-charge resistor 3c is connected with a terminal of the connection assembly 2, and the other three terminals of the pre-charge relay 3b are connected with terminals of the connection assembly 2.

[0147] As shown in FIG. 5, it is a structural schematic diagram of an embodiment of the main relay 3a.

[0148] In this embodiment, the main relay 3a includes a second terminal 31 and a third surface 32, the second terminal 31 is led out of the third surface 32, and the leading direction is perpendicular to the third surface 32. The leading position of the second terminal 31 is within the range surrounded by the edge of the third surface 32. The second terminal 31 is bent 90° after being led out, and the bent part forms a second connecting part 311. The projection of the second connecting part 311 on the third surface 32 is within the range surrounded by the edge of the third surface 32. The second connecting part 311 is perpendicular to the first direction, and the second connecting part 311 is parallel to the third surface 32. The second connecting part 311 has a second surface 3111 which contacts the first terminal 21 on the connecting assembly 2. The second connecting part 311 is provided with a first connecting hole 3112.

[0149] A first supporting part 4 is provided between the second connecting part 311 and the third surface 32, and the first supporting part 4 is used to support the second connecting part 311. The first supporting part 4 is in the shape of a cylinder. The first supporting part 4 is provided with a second connecting hole 41, and the hole wall of the second connecting hole 41 is provided with internal threads.

[0150] When the main relay 3a is connected to the connecting assembly 2, the first connecting part 5 passes through the third connecting hole 2112 on the first connecting part 211 of the first terminal 21 of the connecting assembly 2, the first connecting hole 3112 on the second connecting part 311 of the second terminal 31, and is inserted into the second connecting hole 41 of the first supporting part 4. The external threads on the outside of the first connecting part 5 cooperate with the internal threads on the inner wall of the second connecting hole 41, so as to realize the connection of the first connecting part 211 of the first terminal 21 and the second connecting part 311 of the second terminal 31.

[0151] As shown in FIGS. 6 and 7, it is a structural schematic diagram of another embodiment of the main relay 3a.

[0152] In this embodiment, the main relay 3a includes a second terminal 31 and a third surface 32, the second terminal 31 is led out of the third surface 32, and the leading direction is perpendicular to the third surface 32. The leading position of the second terminal 31 is within the range surrounded by the edge of the third surface 32. The second terminal 31 is bent 90° after being led out, and the bent part forms a second connecting part 311. The projection of the second connecting part 311 on the third surface 32 is within the range surrounded by the edge of the third surface 32. The second connecting part 311 is perpendicular to the first direction, and the second connecting part 311 is parallel to the third surface 32. The second connecting part 311 has a second surface 3111 which contacts the first terminal 21 on the connecting assembly 2. The second connecting part 311 is provided with a first connecting hole 3112.

[0153] The second support 6 is arranged on the side of the main relay 3a. The second support 6 is used to support the second connecting part 311. The second support 6 extends outward from the raised frame arranged on the third surface 32. The second support 6 comprises a flat portion and a raised portion arranged below the flat portion. The thickness of the second support 6 in the first direction is increased by the raised portion. The second support 6 is provided with a fourth connecting hole 61 and a through hole 62. The fourth connecting hole 61 is aligned with the first connecting hole 3112 on the second connecting part 311. The axis of the through hole 62 is perpendicular to the axis of the fourth connecting hole 61. The through hole 62 is a square hole. The through hole 62 is in communication with the fourth connecting hole 61 and the external space of the second support 6. The second connecting part 7 is inserted into the first connecting hole 3112 and the fourth connecting hole 61. The second connecting part 7 is sleeve-shaped. The two ends of the second connecting part 7 are provided with raised edges, which can limit the axial movement of the second connecting part 7. The second connecting part 7 is provided with a fifth connecting hole 71. The hole wall of the fifth connecting hole 71 is provided with internal threads.

[0154] When the main relay 3a is connected with the connecting assembly 2, the third connecting part 8 is inserted into the fifth connecting hole 71 of the second connecting part 7 after passing through the third connecting hole 2112 on the first connecting part 211 of the first terminal 21 of the connecting assembly 2. The external threads on the outside of the third connecting part 8 are matched with the internal threads on the inner wall of the fifth connecting hole 71, so as to realize the connection between the first connecting part 211 of the first terminal 21 and the second connecting part 311 of the second terminal 31.

[0155] As shown in FIGS. 8, 9 and 10, the assembly structure of the pre-charged relay 3b is shown.

[0156] As shown in FIG. 8, in this embodiment, the pre-charged relay 3b comprises a second terminal 31 and a third surface 32. The second terminal 31 is led out from the third surface 32, and the leading-out direction is perpendicular to the third surface 32. The leading-out position of the second terminal 31 is close to the edge of the third surface 32. The second terminal 31 is bent by 90° after being led out, and the bent part forms a second connecting part 311. The projection of the second connecting part 311 on the third surface 32 is mostly located outside the range surrounded by the edge of the third surface 32. The second connecting part 311 is perpendicular to the first direction. The second connecting part 311 has a second surface 3111 which is in contact with the first terminal 21 on the connecting assembly 2. The second connecting part 311 is provided with a first connecting hole 3112.

[0157] As shown in FIGS. 9 and 10, the pre-charged relay 3b is provided with a support seat 9. The support seat 9 comprises an inner wall 91, an outer wall 92 and a support part 93 arranged between the inner wall 91 and the outer wall 92. The inner wall 91 surrounds a containing cavity 94, and the pre-charged relay 3b is arranged in the containing cavity 94. The support part 93 is provided with a sixth connecting hole 931 with internal threads. The inner wall 91 and the outer wall 92 have a hollow part 95 therebetween, and the support part 93 is arranged in the hollow part 95.

[0158] The fourth connecting member 10a is provided with external threads, and the fourth connecting member 10a is inserted into the sixth connecting hole 931 through the third connecting hole 2112 on the first connecting part 211 of the first terminal 21 and the first connecting hole 3112 on the second connecting part 311 of the second terminal 31 to be threadedly connected with the support part 93.

[0159] When the pre-charge relay 3b is connected with the connecting assembly 2, the fourth connecting member 10a is inserted into the sixth connecting hole 931 of the fourth connecting member 10a through the third connecting hole 2112 on the first connecting part 211 of the first terminal 21 and the first connecting hole 3112 on the second connecting part 311 of the second terminal 31, and the external threads on the fourth connecting member 10a are matched with the internal threads on the inner wall of the sixth connecting hole 931 to realize the connection between the first connecting part 211 of the first terminal 21 and the second connecting part 311 of the second terminal 31.

[0160] The connection mode of the pre-charge relay 3b and the pre-charge resistor 3c can be the same as the connection mode of the pre-charge relay 3b and the connecting assembly 2, which will not be described here in detail.

[0161] As shown in FIG. 11, it is a structural schematic diagram of the pre-charge resistor 3c.

[0162] In this embodiment, the pre-charge resistor 3c includes the second terminal 31, which is led out from the main body part of the pre-charge resistor 3c and is perpendicular to the leading-out surface in the leading-out direction. The leading-out position of the second terminal 31 is close to the edge of the main body part of the pre-charge resistor 3c. The second terminal 31 is bent by 90° after being led out, and the bent part forms the second connecting part 311. The projection of the second connecting part 311 on the main body part is mostly located outside the range surrounded by the edge of the leading-out surface. The second connecting part 311 is perpendicular to the first direction. The second connecting part 311 has the second surface 3111 which is in contact with the first terminal 21 on the connecting assembly 2. The first connecting hole 3112 is provided on the second connecting part 311.

[0163] When the pre-charge resistor 3c is connected with the pre-charge relay 3a or the pre-charge resistor 3c is connected with the connecting assembly 2, the connection can be realized by inserting the connecting member with external threads into the connecting hole with internal threads, or other connection modes can be adopted.

[0164] The connection mode of the pre-charge resistor 3c and the pre-charge relay 3a can be the same as or different from the connection mode of the pre-charge resistor 3c and the connecting assembly 2, which will not be described here in detail.

[0165] The above description of each embodiment tends to emphasize the differences between each embodiment, and the same or similar parts can be referred to each other. For the sake of brevity, the same or similar parts will not be described here again.

[0166] Those skilled in the art can understand that the sequence of writing each step in the above method of the specific embodiment does not mean a strict execution sequence and does not constitute any limitation on the implementation process. The specific execution sequence of each step should be determined by its function and possible internal logic.

[0167] Although the present disclosure has been described with reference to the preferred embodiments, various modifications can be made to it without departing from the scope of the present disclosure and equivalents can be substituted for the components therein. In particular, the technical features mentioned in each embodiment can be combined in any manner as long as there is no structural conflict. The present disclosure is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A distribution box (10), comprising: The outer casing (1) includes a first housing (11) and a second housing (12) opposite each other along a first direction; A connecting component (2) is disposed in the first housing (11), the connecting component (2) including a first terminal (21), the first terminal (21) including a first connecting portion (211); and A power distribution element (3) is disposed in the second housing (12). The power distribution element (3) includes a second terminal (31). The second terminal (31) includes a second connection part (311). The first connection part (211) and the second connection part (311) are in contact with each other and electrically connected.

2. The distribution box (10) according to claim 1, wherein, The first connecting portion (211) includes a first surface (2111) that contacts the second connecting portion (311), the first surface (2111) being inclined relative to the first direction, and the second connecting portion (311) includes a second surface (3111) that contacts the first connecting portion (211), the second surface (3111) being inclined relative to the first direction.

3. The distribution box (10) according to claim 1 or 2, wherein, The first connecting portion (211) includes a first surface (2111) that contacts the second connecting portion (311), the first surface (2111) being perpendicular to the first direction, and the second connecting portion (311) includes a second surface (3111) that contacts the first connecting portion (211), the second surface (3111) being perpendicular to the first direction.

4. The distribution box (10) according to any one of claims 1 to 3, wherein, The first terminal (21) is parallel to the first direction in the direction of its lead-out from the connecting assembly (2); and / or, the second terminal (31) is parallel to the first direction in the direction of its lead-out from the power distribution element (3).

5. The distribution box (10) according to any one of claims 1 to 4, wherein, The first terminal (21) is bent after being led out from the power distribution element (3) so that the first connection portion (211) is perpendicular to the first direction; and / or, the second terminal (31) is bent after being led out from the power distribution element (3) so that the second connection portion (311) is perpendicular to the first direction.

6. The distribution box (10) according to any one of claims 1 to 5, wherein, The power distribution element (3) includes a third surface (32) near the connection assembly (2), from which the second terminal (31) extends.

7. The distribution box (10) according to claim 6, wherein, The projection of the second connecting part (311) on the third surface (32) is located within the range of the third surface (32).

8. The distribution box (10) according to claim 6 or 7, wherein, It also includes a first support member (4), which is disposed between the third surface (32) and the second connecting portion (311).

9. The distribution box (10) according to claim 8, wherein, It also includes a first connector (5), the second connecting part (311) is provided with a first connecting hole (3112), the first support member (4) is provided with a second connecting hole (41), the hole wall of the second connecting hole (41) is provided with threads, the first connecting part (211) is provided with a third connecting hole (2112), the outside of the first connector (5) is provided with threads, the first connector (5) passes through the third connecting hole (2112) and the first connecting hole (3112) and is inserted into the second connecting hole (41) to be threadedly connected with the first support member (4).

10. The distribution box (10) according to claim 6, wherein, The projection of the second connecting portion (311) onto the third surface (32) includes the portion located outside the range of the third surface (32).

11. The distribution box (10) according to claim 6 or 10, wherein, It also includes a second support member (6) disposed on the side of the third surface (32), the second support member (6) being configured to support the second connecting portion (311).

12. The distribution box (10) according to claim 11, wherein, It also includes a second connector (7) and a third connector (8). The second connecting part (311) is provided with a first connecting hole (3112), and the second support member (6) is provided with a fourth connecting hole (61). The second connector (7) is inserted into the first connecting hole (3112) and the fourth connecting hole (61), and the second connector (7) is provided with a fifth connecting hole (71) with internal threads. The first connecting part (211) is provided with a third connecting hole (2112), and the third connector (8) is provided with external threads. The third connector (8) passes through the third connecting hole (2112) and is inserted into the fifth connecting hole (71) to be threadedly connected with the second connector (7).

13. The distribution box (10) according to claim 12, wherein, The fourth connecting hole (61) is a blind hole, and the second support member (6) is provided with a through hole (62). One end of the through hole (62) is connected to the fourth connecting hole (61), and the other end of the through hole (62) is connected to the outside of the second support member (6).

14. The distribution box (10) according to any one of claims 1 to 13, wherein, It also includes a support base (9) and a fourth connector (10a). The support base (9) includes an inner wall (91), an outer wall (92), and a support portion (93) disposed between the inner wall (91) and the outer wall (92). The inner wall (91) surrounds to form a receiving cavity (94). The power distribution element (3) is disposed in the receiving cavity (94). The support portion (93) is provided with a sixth connecting hole (931) with internal threads. The second connecting portion (311) is provided with a first connecting hole (3112). The first connecting portion (211) is provided with a third connecting hole (2112). The fourth connector (10a) is provided with external threads. The fourth connector (10a) passes through the third connecting hole (2112) and the first connecting hole (3112) and is inserted into the sixth connecting hole (931) to be threadedly connected to the support portion (93).

15. The distribution box (10) according to any one of claims 1 to 14, wherein, The first connecting part (211) and the second connecting part (311) are bonded or welded together.

16. The distribution box (10) according to any one of claims 1 to 15, wherein, The power distribution element (3) includes at least one of a main relay (3a), a precharge relay (3b), and a precharge resistor (3c).

17. A battery (100) comprising a housing (20) and a power distribution box (10) as claimed in any one of claims 1 to 16, the power distribution box (10) being disposed in the housing (20).

18. An electrical appliance comprising a battery (100) as claimed in claim 17, the battery (100) being used to supply electrical energy to the electrical appliance.

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