Power distribution device, battery device and power utilization device

Abstract

The utility model is suitable for the technical field of batteries, and provides a power distribution device, a battery device and a power utilization device.The power distribution device comprises a base and a base shell, the base shell comprises a first side wall extending in the first direction, and a containing hole is formed in the first side wall; the relay is fixed in the base shell and located on the side, in the second direction, of the first side wall, the second direction intersects with the first direction, the relay comprises two contacts, an insulation blocking structure extending outwards is arranged on the relay in a protruding mode, and the insulation blocking structure is used for separating the two contacts; the end, facing the first side wall, of the insulation blocking structure is contained in the containing hole. According to the power distribution device, the space utilization rate can be improved, and the size of the power distribution device can be reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of battery, in particular to a power distribution device, a battery device and a power consumption device. BACKGROUND

[0002] 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.

[0003] The battery device contains battery monomer, power distribution device and other modules. The power distribution device is a control unit for distributing battery energy, and can particularly distribute high voltage to the battery. Some existing power distribution devices have low space utilization, resulting in a large size of the power distribution device. UTILITY MODEL CONTENT

[0004] Therefore, the present application provides a power distribution device, a battery device and a power consumption device, which aims to solve the problem of large size of the power distribution device due to low space utilization.

[0005] The first aspect of the present application provides a power distribution device, comprising: a base comprising a base shell, the base shell comprising a first side wall extending along a first direction, the first side wall being provided with a receiving hole; a relay fixed in the base shell and located on one side of the first side wall along a second direction, the second direction intersecting the first direction, the relay comprising at least two contacts, and the relay being provided with an outwardly extending insulation barrier structure, the insulation barrier structure being arranged between the at least two contacts, the insulation barrier structure being used to separate the at least two contacts, and one end of the insulation barrier structure towards the first side wall being accommodated in the receiving hole.

[0006] The power distribution device provided by the present application comprises a base and a relay. The base comprises a base shell, the base shell comprises a first side wall and is provided with a receiving hole on the first side wall. The relay is located on one side of the first side wall along a second direction. One end of an insulation barrier structure on the relay towards the first side wall is accommodated in the receiving hole. In this way, the insulation barrier structure cooperates with the receiving hole on the first side wall to separate the contacts on both sides of the insulation barrier structure. The size of the insulation barrier structure along the second direction can be reduced, and the gap width between the relay and the first side wall can be shortened. This is beneficial to reducing the size of the power distribution device in the second direction, compacting the overall layout of the base and the relay, and thus forming an integrated and miniaturized power distribution device. This reduces the waste of space of the power distribution device and solves the problem of large size of the power distribution device.

[0007] In some embodiments, the insulation barrier structure is long strip-shaped and extends along a height direction of the relay, the height direction of the relay being perpendicular to the first direction and the second direction; and the accommodating hole is a long strip-shaped hole, the size of the accommodating hole being greater than or equal to the size of the insulation barrier structure along the height direction of the relay.

[0008] By adopting the above technical solution, the insulation barrier structure is long strip-shaped and extends along the height direction of the relay, so that a sufficient creepage distance can be provided; and the accommodating hole can be adapted to the insulation barrier structure, so as to accommodate the end of the insulation barrier structure.

[0009] In some embodiments, the relay comprises a circumferential side wall, and the insulation barrier structure is an injection-molded rib extending outward from the circumferential side wall.

[0010] By adopting the above technical solution, the insulation barrier structure is an injection-molded rib, so that the connection between the insulation barrier structure and the relay body is reliable and convenient to manufacture.

[0011] In some embodiments, the accommodating hole is a blind hole recessed in the first side wall toward one side of the relay.

[0012] By adopting the above technical solution, the first side wall can cover the relay, so that the relay is protected, thereby ensuring and prolonging the service life of the relay and the power distribution device.

[0013] In some embodiments, the accommodating hole is a through hole penetrating through the first side wall along the second direction.

[0014] By adopting the above technical solution, the accommodating hole can provide a larger accommodating depth for the insulation barrier structure, which is conducive to further reducing the size of the power distribution device along the second direction.

[0015] In some embodiments, the power distribution device further comprises a conductive sheet, the conductive sheet being fixedly connected to one side of the relay provided with the insulation barrier structure, and the conductive sheet being electrically connected to the contact.

[0016] By adopting the above technical solution, the installation position of the conductive sheet can utilize the gap between the relay and the first side wall in the second direction, thereby improving the structural compactness of the power distribution device.

[0017] In some embodiments, the power distribution device further comprises a countersunk screw, the countersunk screw being used to fixedly connect the conductive sheet and the relay; a receiving groove is arranged on the conductive sheet, the receiving groove being used to accommodate the head of the countersunk screw, and the height of the countersunk screw does not exceed the surface of the conductive sheet along the second direction.

[0018] By adopting the technical scheme, the conductive sheet and the relay are locked and fixed through cooperation of the countersunk screw and the accommodating groove on the conductive sheet; the head of the countersunk screw does not exceed the conductive sheet, so that the countersunk screw does not occupy too much space, the structure of the power distribution device is relatively compact, and the power distribution device is beneficial to size reduction in the second direction and miniaturization.

[0019] In some embodiments, the conductive sheet is welded to the contact.

[0020] By adopting the technical scheme, the conductive sheet is welded to the contact, space occupied by the fastener is saved, and the power distribution device is beneficial to size reduction in the second direction.

[0021] In some embodiments, the power distribution device further comprises a first battery management circuit board, which is fixedly connected to the base.

[0022] By adopting the technical scheme, the power distribution device integrates the relay and the first battery management circuit board, the overall integration of the power distribution device is higher, arrangement and layout of various devices can be more compact, and the power distribution device occupies less space in the battery device, so that more space can be provided for the battery monomer assembly.

[0023] In some embodiments, the power distribution device further comprises a second battery management circuit board arranged on the base, the first battery management circuit board is arranged on a side of the relay away from the first side wall in the second direction, the second battery management circuit board is arranged on a side of the base in the height direction of the base, the height direction of the base is perpendicular to the first direction and the second direction, or the first battery management circuit board is arranged on a side of the base in the height direction of the base, and the first battery management circuit board comprises a first circuit board module and a second circuit board module electrically connected.

[0024] By adopting the technical scheme, the first battery management circuit board and the second battery management circuit board are located on the side with a larger area in the power distribution device, space of the power distribution device can be effectively utilized, or the first battery management circuit board integrates functions of the two circuit boards, thereby further saving the size of the power distribution device in the second direction, and the power distribution device is beneficial to improvement of integration and miniaturization.

[0025] In some embodiments, the power distribution device further comprises an assembly component, the assembly component comprises at least one of the conductive sheet and the fuse; the assembly component is provided with a locking hole and a pre-fixing hole, the pre-fixing hole has a smaller hole diameter than the locking hole, the assembly component can be fixed through the fastener penetrating the locking hole, and the pre-fixing hole is used for mounting a connecting piece to fix the assembly component through the connecting piece.

[0026] By adopting the technical scheme, the assembly component is pre-fixed on the base through the connecting piece, and the risk of fastener back-off and the risk of assembly of the assembly component being not firm and falling off due to the back-off are reduced.

[0027] In some embodiments, the connecting piece is a hand screw, and the hand screw comprises a screw part and a hand screw part arranged integrally.

[0028] By adopting the technical scheme, after transportation is completed, if the connecting piece is back-off, the connecting piece can be tightened again through the hand screw part, and the assembly component is fixed through the connecting piece and the fastener at the same time, and the connection reliability of the assembly component is improved.

[0029] Embodiments of the second aspect of the application provide a battery device, comprising the power distribution device provided in the first aspect and a battery cell assembly, wherein the battery cell assembly is electrically connected with the power distribution device.

[0030] The power distribution device provided by the embodiments of the application has high integration, compact structure and small size, and occupies small space in the battery device, which is beneficial to improve the space occupied by the battery cell assembly and improve the capacity of the battery device.

[0031] Embodiments of the third aspect of the application provide a power consumption device, comprising the battery device provided in the second aspect, and the battery device is used for storing or providing electric energy.

[0032] The above description is only a summary of the technical scheme of the application, in order to more clearly understand the technical means of the application, the embodiments of the application can be implemented according to the content of the description, and in order to make the above and other purposes, characteristics and advantages of the application more obvious and easy to understand, the following will describe the specific embodiments of the application. BRIEF DESCRIPTION OF DRAWINGS

[0033] In order to more clearly illustrate the technical scheme in the embodiments of the application, the following will briefly introduce the drawings needed to be used in the embodiments or conventional technical description, and obviously, the drawings in the following description are only some embodiments of the application, and those skilled in the art can also obtain other drawings according to these drawings without paying creative labor.

[0034] Figure 1 The structural schematic diagram of the vehicle provided by some embodiments of the application is shown in the figure;

[0035] Figure 2 The exploded view of the battery device provided by some embodiments of the application is shown in the figure;

[0036] Figure 3 The top view of the power distribution device provided by some embodiments of the application is shown in the figure;

[0037] Figure 4 Fig. 8 is a plan view of the power distribution device shown in Fig. 7, with the second battery management circuit board removed; Figure 3 Fig. 9 is a plan view of the power distribution device shown in Fig. 8, with the second battery management circuit board removed;

[0038] Figure 5 Fig. 10 is an enlarged view of portion A of the power distribution device shown in Fig. 9; Figure 4 Fig. 11 is an enlarged view of portion A of the power distribution device shown in Fig. 10;

[0039] Figure 6 Fig. 12 is a plan view of a relay provided in some embodiments of the present application;

[0040] Figure 7 Fig. 13 is a side view of a power distribution device provided in some embodiments of the present application;

[0041] Figure 8 Fig. 14 is a perspective view of a portion of a power distribution device provided in some embodiments of the present application;

[0042] Figure 9 Fig. 15 is a side view of a countersunk screw provided in some embodiments of the present application;

[0043] Figure 10 Fig. 16 is a plan view of the countersunk screw shown in Fig. 15; Figure 9 Fig. 17 is a plan view of the countersunk screw shown in Fig. 16;

[0044] Figure 11 Fig. 18 is a plan view of a power distribution device provided in other embodiments of the present application;

[0045] Figure 12 Fig. 19 is a plan view of a power distribution device provided in yet other embodiments of the present application;

[0046] Figure 13 Fig. 20 is a perspective view of a connecting member provided in some embodiments of the present application.

[0047] The meanings of the reference signs indicated in the figures are as follows:

[0048] 1000, vehicle; 1001, battery device; 200, battery cell assembly; 210, battery cell; 300, case; 310, first case; 320, second case; 100, power distribution device; 10, base; 11, base housing; 111, first side wall; 1111, accommodation hole; 20, relay; 21, peripheral side wall; 22, insulating barrier structure; 23, contact; 30, fitting member; 301, locking hole; 302, pre-fixing hole; 31, conductive piece; 311, accommodation groove; 32, fuse; 41, first battery management circuit board; 42, second battery management circuit board; 51, countersunk screw; 511, screw body; 512, head; 52, connecting member; 521, bolt portion; 522, hand screw portion. DETAILED DESCRIPTION

[0049] The embodiments of the present application will be described in detail below with reference to the drawings. The following examples are only used to more clearly illustrate the technical scheme of the present application, and therefore only serve as examples, but cannot be used to limit the protection scope of the present application.

[0050] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used in the specification herein is for describing particular embodiments only and is not intended to be limiting of the application; the use of the terms "including," "comprising," "having" and variations thereof herein is intended to be broad and encompass the terms "consisting of" and "consisting essentially of" and variations thereof. Use of the term "about" in relation to a geographic location refers to a location within a 10 km radius of the geographic location.

[0051] In the description of the embodiments of the present application, 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 the description of the embodiments of the present application, the meaning of "a plurality of" is two or more, unless otherwise explicitly and specifically limited.

[0052] 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 application. The appearance of the phrase in various places in the specification is not necessarily all referring to the same embodiment, or to a particular embodiment, or to a particular set of embodiments, and is not intended to imply any such thing. It will be explicitly and implicitly appreciated by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0053] In the description of the embodiments of the present application, the term "and / or" is only a description of the 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 alone, A and B together, and B alone. In addition, the character " / " in this paper generally represents that the front and rear associated objects are a "or" relationship.

[0054] In the description of the embodiments of the present application, the term "a plurality of" refers to two or more (including two), and similarly, "a plurality of groups" refers to two or more groups (including two groups), and "a plurality of pieces" refers to two or more pieces (including two pieces).

[0055] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the embodiments of the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the embodiments of the present application.

[0056] In the description of the embodiments of the present application, unless specifically defined and limited, the technical terms "mounting", "connecting", "connecting", "fixing" and other terms should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it 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 application can be understood according to the specific circumstances.

[0057] If not specifically stated, all embodiments and optional embodiments of the present application can be combined to form new technical solutions.

[0058] If not specifically stated, all technical features and optional technical features of the present application can be combined to form new technical solutions.

[0059] In the battery, the power distribution device is a control unit for distributing battery energy, and can particularly distribute high voltage to the battery. In some cases, the power distribution device includes a housing and electrical components such as relays assembled in the housing. However, in the assembly of the components of the power distribution device, the power distribution device has a problem of space waste, resulting in a large size of the power distribution device, which is not conducive to the miniaturization of the power distribution device.

[0060] In view of this, the embodiments of the present application provide a power distribution device, which comprises a base and a relay, the base comprises a base shell, the base shell comprises a first side wall extending along a first direction and provided with a receiving hole on the first side wall; the relay is fixed in the base shell and located on one side of the first side wall along a second direction, the second direction intersects the first direction, the relay is provided with an outwardly extending insulation barrier structure, and one end of the insulation barrier structure faces the first side wall and is accommodated in the receiving hole.

[0061] The insulation barrier structure can play a physical insulation barrier role. One end of the insulation barrier structure is accommodated in the receiving hole, so that the insulation barrier structure can cooperate with the receiving hole on the first side wall to isolate the two sides of the insulation barrier structure, so that the size of the insulation barrier structure in the second direction can be shortened, and the gap size between the relay and the first side wall can be reduced, thereby reducing the size of the power distribution device in the second direction, facilitating the compact overall layout of the base and the relay, thereby facilitating the formation of an integrated and miniaturized power distribution device, reducing the space waste of the power distribution device, and solving the problem of large size of the power distribution device.

[0062] The power distribution device disclosed in the embodiments of the present application can be used in a battery to serve as a control unit for distributing battery energy and to distribute high voltage to the battery.

[0063] In the embodiments of the present application, the battery cell can be a secondary battery, which refers to a battery cell that can be activated by charging after discharging.

[0064] The battery cell can be a lithium ion battery, a sodium ion battery, a sodium lithium ion battery, a lithium metal battery, a sodium metal battery, a lithium sulfur battery, a magnesium ion battery, a nickel-hydrogen battery, a nickel-cadmium battery, a lead-acid battery, etc. The embodiments of the present application are not limited thereto.

[0065] The battery device disclosed in the embodiments of the present application can be used in a power consumption device using the battery device as a power source or a variety of energy storage systems using the battery device as an energy storage element. The power consumption device is, for example, a mobile phone, a portable device, a notebook computer, an electric vehicle, an electric toy, an electric tool, a vehicle, a ship and a spacecraft, etc. For example, the spacecraft includes an airplane, a rocket, a space shuttle and a spacecraft, etc.

[0066] The following embodiments are described by taking a vehicle as an example for convenience of description.

[0067] Please refer to Figure 1 , Figure 1 The structural schematic diagram of the vehicle 1000 provided in some embodiments of the present application is shown. The vehicle 1000 can be a fuel automobile, a gas automobile or a new energy automobile, which can be a pure electric vehicle, a hybrid electric vehicle or a range extended vehicle, etc. The vehicle 1000 is internally provided with a battery device 1001, which can be arranged at the bottom, the head or the tail of the vehicle 1000. The battery device 1001 can be used for power supply of the vehicle 1000, for example, the battery device 1001 can be used as the operating power source of the vehicle 1000. The vehicle 1000 can further include a controller and a motor, and the controller is used to control the battery device 1001 to supply power to the motor, for example, to meet the power demand of the vehicle 1000 during starting, navigation and driving.

[0068] In some embodiments of the present application, the battery device 1001 can not only be used as the operating power source of the vehicle 1000, but also be used as the driving power source of the vehicle 1000, instead of or partially instead of fuel or natural gas to provide driving power for the vehicle 1000.

[0069] Reference is made to Figure 2 , Figure 2 The exploded structural schematic diagram of the battery device 1001 provided in some embodiments of the present application is shown. The battery device (Battery Apparatus) mentioned in the embodiments of the present application can include one or more battery cell assemblies 200 for providing voltage and capacity. The battery cell assembly (Battery Cell Assembly) can include a plurality of battery cells 210 connected in series, in parallel or in a mixed manner through a busbar component.

[0070] In some embodiments, the battery cell assembly 200 is generally formed by arranging a plurality of battery cells 210.

[0071] As an example, the battery cell assembly 200 can be a battery module, which is formed by arranging and fixing a plurality of battery cells 210 into one independent module. As an example, the battery module can be formed by bundling a plurality of battery cells 210 with a cable tie.

[0072] In some embodiments, the battery device 1001 can be a battery pack, which includes a case 300 and one or more battery cell assemblies 200, the battery cell assemblies 200 are accommodated in the case 300.

[0073] As an example, the battery cell assembly 200 can be a battery module, which can be accommodated in the case 300 by fixing the battery module in the case 300.

[0074] As an example, the battery cell assembly 200 can also be accommodated in the case 300 by fixing a plurality of battery cells 210 directly to the case 300.

[0075] As an example, the case 300 can include a first case 310 and a second case 320. The first case 310 and the second case 320 are buckled so that an enclosed space is formed inside the case 300 to accommodate the battery cell assembly 200. Here, enclosed means covered or closed, which can be sealed or unsealed. The first case 310 can be a top cover or a bottom plate.

[0076] As an example, the case 300 can include a top cover, a frame and a bottom plate. The top cover and the bottom plate are respectively connected with the frame so that an enclosed space is formed inside the case 300 to accommodate the battery cell assembly.

[0077] In some embodiments, the case 300 can be part of the chassis structure of a vehicle. For example, part of the case 300 can be at least part of the floor of the vehicle, or part of the case 300 can be at least part of the cross beam and the longitudinal beam of the vehicle.

[0078] The technical solutions described in the embodiments of the present application are applicable to various electric devices using battery cells, such as mobile phones, portable devices, notebook computers, electric vehicles, electric toys, electric tools, vehicles, ships and spacecraft, etc. For example, the spacecraft includes airplanes, rockets, space shuttles and spaceships, etc.

[0079] Please refer to Figure 1 and Figure 2The battery device 1001 further comprises a power distribution device 100, which is a control unit for distributing battery energy.

[0080] Embodiments of the first aspect of the present application provide a power distribution device 100. Please refer to Figures 3 to 7 The power distribution device 100 comprises a base 10 and a relay 20. The base 10 comprises a base housing 11, which comprises a first side wall 111 extending along a first direction X, and the first side wall 111 is provided with a receiving hole 1111. The relay 20 is fixed in the base housing 11 and located at one side of the first side wall 111 along a second direction Y intersecting the first direction X. The relay 20 comprises at least two contacts 23, and the relay 20 is provided with an outwardly extending insulation barrier structure 22. The insulation barrier structure 22 is arranged between and separates the at least two contacts 23, and one end of the insulation barrier structure 22 facing the first side wall 111 is received in the receiving hole 1111.

[0081] The base 10 provides a fixing base for the relay 20. The base 10 comprises a base housing 11 for enclosing a receiving space for receiving the relay 20 and other electrical components, which can be electrical elements such as a fuse, a fuse link, etc. The base 10 can further comprise a base seat in the base housing 11, and the base seat can be provided with a receiving groove or a receiving cavity for receiving the electrical components, so as to facilitate the installation of the electrical components and improve the integration level.

[0082] The base housing 11 comprises a first side wall 111, which is an outer side wall of the base housing 11 and can separate the relay 20 from the external environment. The first side wall 111 extends along a first direction X, which can be the length direction of the power distribution device 100, but is not limited thereto. Optionally, the relay 20 can be provided in plurality, and the plurality of relays 20 are arranged along the length direction of the power distribution device 100.

[0083] The first side wall 111 is provided with a receiving hole 1111 for receiving at least part of the insulation barrier structure 22 on the relay 20.

[0084] The relay 20 is an electrical control device that makes a predetermined step change in the controlled quantity in the electrical output circuit when the change of the input quantity (excitation quantity) reaches a specified requirement. The relay 20 can comprise a main positive relay, a main negative relay, and can further comprise a fast-charging relay 20, etc.

[0085] The relay 20 is fixed inside the base housing 11 and located on one side of the first sidewall 111 along the second direction Y. Optionally, the second direction Y intersects the first direction X perpendicularly, but is not limited thereto; the second direction Y may also intersect the first direction X at an angle. In some embodiments, the first direction X is the length direction of the power distribution device 100, and the second direction Y is the width direction of the power distribution device 100.

[0086] like Figure 6 As shown, the relay 20 includes at least two contacts 23, and an insulating barrier structure 22 is disposed between the at least two contacts 23, the insulating barrier structure 22 being able to separate the two contacts 23. The insulating barrier structure 22 can also separate other electrical components on both sides thereof. Optionally, the relay 20 is provided with two contacts 23, and along a first direction X, the insulating barrier structure 22 is disposed in the middle of the relay 20.

[0087] In some embodiments, the relay 20 further includes a switching unit, and the contact 23 is electrically connected to the switching unit. The contact 23 is used to connect to the high-voltage circuit, and the switching unit is used to control the contact to close or open in order to control the on / off state of the high-voltage circuit.

[0088] The relay 20 is provided with an outwardly extending insulating barrier structure 22. The insulating barrier structure 22 is a structure that provides physical insulation and barrier, thereby increasing the creepage distance between electrical components. The insulating barrier structure 22 may be plate-shaped, but is not limited to. The insulating barrier structure 22 is disposed between at least two contacts 23 to separate at least two adjacent contacts 23.

[0089] The end of the insulating barrier structure 22 facing the first sidewall 111 is accommodated in the receiving hole 1111, so that the insulating barrier structure 22 can cooperate with the receiving hole 1111 on the first sidewall 111 to isolate the electrical components on both sides of the insulating barrier structure 22, meet the requirements of creepage distance and electrical clearance, reduce the risk of short circuit, and reduce the safety hazards of the power distribution device 100.

[0090] In some power distribution devices 100, the insulating barrier structure 22 is spaced apart from the first sidewall 111, and a certain margin is provided between them, resulting in the power distribution device 100 not being compact enough and wasting space. In the power distribution device 100 provided in this application embodiment, since the end of the insulating barrier structure 22 is accommodated in the receiving hole 1111, the dimension of the insulating barrier structure 22 itself along the second direction Y can be shortened; the gap width between the relay 20 and the first sidewall 111 can also be shortened, reducing space waste, thereby facilitating the reduction of the dimension of the power distribution device 100 along the second direction Y; in addition, the cooperation between the insulating barrier structure 22 and the first sidewall 111 can separate the contacts 23 and electrical components on both sides of the insulating barrier structure 22.

[0091] The power distribution device 100 provided by the embodiment of the present application comprises a base 10 and a relay 20. The base 10 comprises a base shell 11, the base shell 11 comprises a first side wall 111, and the first side wall 111 is provided with a receiving hole 1111. The relay 20 is located on one side of the first side wall 111 along a second direction Y. An insulation blocking structure 22 on the relay 20 is accommodated in the receiving hole 1111 at one end of the first side wall 111. In this way, the insulation blocking structure 22 cooperates with the receiving hole 1111 on the first side wall 111, so that the size of the insulation blocking structure 22 along the second direction Y can be shortened. The gap width between the relay 20 and the first side wall 111 is also shortened, and the space waste is reduced, thereby facilitating the reduction of the size of the power distribution device 100 along the second direction Y, facilitating the compact overall layout of the base 10 and the relay 20, thereby facilitating the formation of an integrated and miniaturized power distribution device 100, reducing the space waste of the power distribution device 100, and solving the problem of large size of the power distribution device 100. In addition, the cooperation of the insulation blocking structure 22 and the first side wall 111 can separate the two contacts 23, and can meet the requirements of electrical isolation and creepage distance.

[0092] In some embodiments, the insulation blocking structure 22 is long strip-shaped and extends along the height direction of the relay 20, and the height direction of the relay 20 is perpendicular to the first direction X and the second direction Y. The receiving hole 1111 is a long strip-shaped hole, and along the height direction of the relay 20, the size of the receiving hole 1111 is greater than or equal to the size of the insulation blocking structure 22.

[0093] The height direction of the relay 20 is parallel to the third direction Z, and the height direction of the relay 20 is also the height direction of the power distribution device 100. The insulation blocking structure 22 is long strip-shaped and extends along the height direction of the relay 20, and the insulation blocking structure 22 can provide a creepage distance that meets the safety requirements.

[0094] The shape and size of the receiving hole 1111 can be adapted to the insulation blocking structure 22. The receiving hole 1111 is a long strip-shaped hole, and along the height direction of the relay 20, the size of the receiving hole 1111 is greater than or equal to the size of the insulation blocking structure 22, so that the receiving hole 1111 can accommodate the end of the insulation blocking structure 22. Along the first direction X, the width of the receiving hole 1111 is greater than or equal to the width of the insulation blocking structure 22, so that the first side wall 111 can maintain a certain structural strength.

[0095] Optionally, along the height direction of the relay 20, the receiving hole 1111 has a certain gap with the bottom edge of the first side wall 111.

[0096] By adopting the above technical scheme, the insulation barrier structure 22 is long strip-shaped and extends along the height direction of the relay 20, and can provide sufficient creepage distance; the accommodating hole 1111 can fit the insulation barrier structure 22, so as to accommodate the end of the insulation barrier structure 22.

[0097] In some embodiments, the relay 20 includes a circumferential side wall 21, and the insulation barrier structure 22 is an injection-molded rib that protrudes outward from the circumferential side wall 21.

[0098] The relay 20 includes a circumferential side wall 21 that forms a relay housing, and further includes electrical components arranged in the relay housing. The insulation barrier structure 22 is an injection-molded rib that protrudes outward from the circumferential side wall 21, that is, the insulation barrier structure 22 is an integral structure with the circumferential side wall 21.

[0099] By adopting the above technical scheme, the insulation barrier structure 22 is an injection-molded rib, the connection between the insulation barrier structure 22 and the relay 20 body is reliable, and manufacturing is facilitated.

[0100] In some embodiments, the accommodating hole 1111 is a blind hole that is recessed in the first side wall 111 toward the side of the relay 20.

[0101] The accommodating hole 1111 is a blind hole, the end of the insulation barrier structure 22 is accommodated in the accommodating hole 1111, and the insulation barrier structure 22 does not penetrate the first side wall 111.

[0102] In this way, the first side wall 111 can cover the relay 20 and provide protection for the relay 20, thereby ensuring and prolonging the service life of the relay 20 and the power distribution device 100. On the other hand, the first side wall 111 can reliably prevent human hands or external devices from contacting the relay 20 and conducting electricity, thereby reducing the safety hazards of the power distribution device 100 and improving the use performance of the power distribution device 100.

[0103] In some embodiments, the accommodating hole 1111 is a through hole that penetrates the first side wall 111 in the second direction Y.

[0104] In this way, the hole depth of the accommodating hole 1111 can be the same as the thickness of the first side wall 111, so that the accommodating hole 1111 can provide a larger accommodation depth for the insulation barrier structure 22, which is beneficial to further reducing the size of the power distribution device 100 in the second direction Y.

[0105] Please refer to Figure 4 , Figure 5 , Figures 8 to 10 In some embodiments, the power distribution device 100 further includes a conductive sheet 31 that is fixedly connected to the side of the relay 20 on which the insulation barrier structure 22 is arranged, and the conductive sheet 31 is electrically connected to the contact 23.

[0106] The conductive sheet 31 is used to realize the electrical connection between electrical components, and can be a copper bar, an aluminum bar, or other sheet-shaped conductive structure. The conductive sheet 31 can be fixedly connected to the relay 20 by welding, fastener connection, etc., wherein the relay 20 is provided with a contact 23, and the conductive sheet 31 is electrically connected with the contact 23.

[0107] The conductive sheet 31 is fixedly connected with the side of the relay 20 provided with the insulating barrier structure 22, so that the installation position of the conductive sheet 31 can utilize the gap between the relay 20 and the first side wall 111 in the second direction Y, thereby improving the structural compactness of the power distribution device 100.

[0108] In some embodiments, the power distribution device 100 further comprises a countersunk screw 51 for fixedly connecting the conductive sheet 31 with the relay 20; the conductive sheet 31 is provided with a receiving groove 311, the depth direction of the receiving groove 311 is parallel to the second direction Y, and the receiving groove 311 is used to accommodate the head of the countersunk screw 51; the height of the countersunk screw 51 does not exceed the surface of the conductive sheet 31.

[0109] The countersunk screw 51 refers to a fastener with a specially designed screw head, which has a conical frustum shape and can be completely embedded (sunk) below the surface of the fastened part after installation, so that the head does not protrude. As shown in Figure 9 、 Figure 10 The countersunk screw 51 includes a screw body 511 and a head 512, and the head 512 can be provided with an internal hexagonal head for facilitating locking operation. Compared with a traditional hexagonal flange bolt, the locking point of the countersunk screw 51 does not exceed the height of the flange portion along the second direction Y, and can be embedded in the fastened part.

[0110] The conductive sheet 31 is provided with a receiving groove 311, the depth direction of the receiving groove 311 is parallel to the second direction Y, and the countersunk screw 51 is arranged along the second direction Y and fixedly connects the conductive sheet 31 to the relay 20. It can be understood that the conductive sheet 31 is provided with a mounting hole for passing through the countersunk screw 51, and the receiving groove 311 surrounds the peripheral side of the mounting hole to accommodate the head of the countersunk screw 51, so that the head of the countersunk screw 51 can be completely accommodated in the receiving groove 311.

[0111] Optionally, the conductive sheet 31 includes a first conductive portion and a second conductive portion connected by bending, the first conductive portion is located on the side of the relay 20 close to the first side wall 111 along the second direction Y, and the second conductive portion is located on the top of the relay 20 along the third direction Z, and the second conductive portion can be electrically connected with other electrical components.

[0112] By adopting the technical scheme, the conductive sheet 31 and the relay 20 are locked and fixed by matching the countersunk screw 51 with the accommodating groove 311 on the conductive sheet 31; the head of the countersunk screw 51 does not exceed the conductive sheet 31, so that the countersunk screw 51 does not occupy too much space, the structure of the power distribution device 100 is relatively compact, which is beneficial to reducing the size of the power distribution device 100 in the second direction Y and facilitating miniaturization of the power distribution device 100.

[0113] Please refer to Figure 4 、 Figure 5 In some embodiments, the conductive sheet 31 is welded to the contact 23 of the relay 20.

[0114] Specifically, the conductive sheet 31 is welded to the contact 23 of the relay 20, and mechanical fixation and electrical connection of the conductive sheet 31 and the relay 20 are realized at the same time.

[0115] In this way, the conductive sheet 31 and the relay 20 can be connected without fasteners, but are fixed by welding, which saves the space occupied by the fasteners and is beneficial to shortening the size of the power distribution device 100 in the second direction Y.

[0116] Please refer to Figures 3 to 12 In some embodiments, the power distribution device 100 further comprises a first battery management circuit board 41, and the first battery management circuit board 41 is fixedly connected to the base 10.

[0117] The first battery management circuit board 41 is a circuit board for battery management, and is a main component in a battery management system (BMS). The first battery management circuit board 41 can be a battery management master control board.

[0118] The battery management system should have a corresponding protective shell to protect the battery management circuit board and other devices inside. In the embodiment of the application, the first battery management circuit board 41 is arranged on the base 10 of the power distribution base 10, so that the space occupied by the protective shell can be saved.

[0119] The first battery management circuit board 41 is fixedly connected to the base 10, which can mean that the first battery management circuit board 41 is directly arranged on the base 10, for example, by connecting the two through corresponding connecting structures such as screws, rivets and clamping structures; or it can also mean that the first battery management circuit board 41 is fixedly connected to the base 10 through an intermediate structure, for example, the intermediate structure can be a bracket, a fixed plate, etc.

[0120] Therefore, the power distribution device 100 provided by the embodiment of the present application integrates the relay 20 and the first battery management circuit board 41, and the overall integration of the power distribution device 100 is higher, the arrangement of each device can be more compact, and the power distribution device 100 occupies less space in the battery device, thereby providing more space for the battery monomer assembly.

[0121] Please refer to Figure 3 and Figure 4 In some embodiments, the power distribution device 100 further comprises a second battery management circuit board 42 arranged on the base 10, the first battery management circuit board 41 is arranged on one side of the relay 20 away from the first side wall 111 along the second direction Y, and the second battery management circuit board 42 is arranged on one side of the base 10 along the height direction of the base 10, and the height direction of the base 10 is perpendicular to the first direction X and the second direction Y.

[0122] The first battery management circuit board 41 and the second battery management circuit board 42 are used to connect different structures, for example, the first battery management circuit board 41 and the second battery management circuit board 42 are respectively connected to different sampling circuit boards; for example, the first battery management circuit board 41 is a battery management master control board, and the second battery management circuit board 42 is a battery management slave control board (or a collection board), and the second battery management circuit board 42 can collect the voltage and temperature of the battery monomer 210 and send the parameters to the first battery management circuit board 41.

[0123] The first battery management circuit board 41 and the second battery management circuit board 42 are located on the side with a larger area in the power distribution device 100, which can effectively utilize the space of the power distribution device 100 and improve the structural compactness of the power distribution device 100.

[0124] Please refer to Figure 11 In other embodiments, the first battery management circuit board 41 is arranged on one side of the base 10 along the height direction of the base 10, and the first battery management circuit board 41 comprises a first circuit board module and a second circuit board module electrically connected.

[0125] The first circuit board module is used to realize the function of the first battery management circuit board 41, and the second battery board is used to realize the function of the second battery management circuit board 42, that is, the first battery management circuit board 41 and the second battery management circuit board 42 are integrated on one circuit board.

[0126] Please refer to Figure 3 and Figure 11 , Figure 11 The embodiment shown saves the space in the second direction Y originally occupied by the first battery management circuit board 41, and further shortens the size of the power distribution device 100 along the second direction Y (which can be the width direction).

[0127] In this way, the functions of two circuit boards are integrated by the first battery management circuit board 41, and the size of the power distribution device 100 in the second direction Y is further saved, which is conducive to improving the integration and miniaturization of the power distribution device 100.

[0128] Please refer to Figure 12 In some embodiments, the power distribution device 100 further comprises an assembly component 30, the assembly component 30 comprising at least one of the conductive sheet 31 and the fuse 32; the assembly component 30 is provided with a locking hole 301 and a pre-fixing hole 302, the pre-fixing hole 302 has a smaller hole diameter than the locking hole 301, the assembly component 30 can be fixed by a fastener inserted into the locking hole 301, and the pre-fixing hole 302 is used to install a connecting piece 52 to fix the assembly component 30 through the connecting piece 52.

[0129] The assembly component 30 refers to a component that needs to be installed on the base 10 by assembly. When the power distribution device 100 is delivered, the assembly component 30 is not completely fixed, and the assembly component 30 is fastened on the base 10 when the battery device 1001 is assembled. For example, the assembly component 30 comprises the conductive sheet 31 and the fuse 32.

[0130] In the power distribution device 100 provided by the embodiments of the present application, the assembly component 30 is provided with a locking hole 301 and a pre-fixing hole 302. The locking hole 301 is a hole for inserting a fastener to fasten the assembly component 30 on the base 10, and the pre-fixing hole 302 is a hole for installing a connecting piece 52 to pre-fix the assembly component 30 on the base 10. The pre-fixing hole 302 has a smaller hole diameter than the locking hole 301, so as to reduce the size of the pre-fixing hole 302, and only the pre-fixing function is needed. Optionally, the hole diameter of the pre-fixing hole 302 is not greater than half of the hole diameter of the locking hole 301. The fastener inserted into the locking hole 301 can be a bolt or the like, and the installation piece in the pre-fixing hole 302 can be a bolt, a buckle, a rolled strip or the like.

[0131] Generally, the power distribution device 100 is delivered integrally, and the assembly component 30 inside the power distribution device 100 needs to be locked and fixed, and then transferred to the assembly process of the battery device 1001 for assembly. Before the power distribution device 100 is transferred to the assembly process of the battery device, the vibration generated during transportation may cause the fastener in the locking area to be loosened, and it is difficult to lock the fastener again due to assembly requirements, so that the assembly component 30 has the risk of being not firmly installed.

[0132] The pre-fixing hole 302 is arranged on the assembly component 30. Before the assembly component 30 is delivered, the assembly component 30 is pre-fixed to the base 10 through the connecting piece 52. Therefore, the locking hole 301 does not need to be fixed by the fastener. When the battery device is assembled, the fastener is fixed and installed in the locking hole 301. In this way, the power distribution device 100 provided by the embodiment of the present application reduces the risk of the fastener being unscrewed and the risk of the assembly component 30 being not firmly assembled and falling off due to the unscrewing.

[0133] Please refer to Figure 12 、 Figure 13 In some embodiments, the connecting piece 52 is a hand screw bolt, which includes an integral bolt part 521 and a hand screw part 522.

[0134] The bolt part 521 is used to be fixed in the connecting hole, and the hand screw part 522 is used for manual hand screwing operation to tighten the hand screw bolt. The hand screw bolt has the advantages of convenient operation and allowing secondary assembly.

[0135] By adopting the above technical solution, after transportation is completed, if the connecting piece 52 is unscrewed, the connecting piece 52 can be tightened again through the hand screw part. In this way, the assembly component 30 is fixed through the connecting piece 52 and the fastener, thereby improving the connection reliability of the assembly component 30.

[0136] It can be understood that after the assembly component 30 is fixed on the base 10 through the fastener, the connecting piece 52 can also not be fixed.

[0137] Please refer to Figures 1 to 13 Some embodiments of the present application provide a power distribution device 100, which includes a base 10 and a relay 20. The base 10 includes a base shell 11, and the base shell 11 includes a first side wall 111 extending along a first direction X, and the first side wall 111 is provided with a receiving hole 1111. The relay 20 is fixed in the base shell 11 and located on one side of the first side wall 111 along a second direction Y intersecting the first direction X. The relay 20 is provided with an outwardly extending insulation barrier structure 22, and one end of the insulation barrier structure 22 facing the first side wall 111 is accommodated in the receiving hole 1111. The insulation barrier structure 22 and the receiving hole 1111 are long strips, and the receiving hole 1111 can be a through hole or a blind hole. The power distribution device 100 further includes a conductive sheet 31, which is fixedly connected or weldedly connected to one side of the relay 20 provided with the insulation barrier structure 22 through a countersunk screw 51. The power distribution device 100 further includes a first battery management circuit board 41 fixedly connected to the base 10. Optionally, the first direction X is the length direction of the power distribution device 100, and the second direction Y is the width direction of the power distribution device 100.

[0138] The insulating barrier structure 22 and the accommodating hole 1111 on the first side wall 111 are matched in the power distribution device 100 provided by the embodiments of the present application, which can separate the electrical components on both sides of the insulating barrier structure 22, meet the requirements of the creepage distance and the electrical clearance, shorten the size of the insulating barrier structure 22 along the second direction Y, and reduce the clearance size between the relay 20 and the first side wall 111, thereby reducing the size of the power distribution device 100 along the second direction Y, facilitating the compact overall layout of the base 10 and the relay 20, reducing the space waste of the power distribution device 100, and solving the problem of large size of the power distribution device 100.

[0139] The embodiments of the second aspect of the present application provide a battery device 1001, which includes the power distribution device 100 provided by the first aspect and the battery cell assembly 200, and the battery cell assembly 200 is electrically connected with the power distribution device 100.

[0140] The power distribution device 100 provided by the embodiments of the present application has high integration, compact structure and small size, occupies small space in the battery device 1001, facilitates to improve the space occupied by the battery cell assembly 200 in the battery device 1001 and improve the capacity of the battery device 1001.

[0141] The embodiments of the third aspect of the present application provide a power utilization device, which includes the battery device 1001 provided by the second aspect, and the battery device 1001 is used for storing or providing electric energy.

[0142] The above embodiments are only used to illustrate the technical solutions of the present application, but not limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application, and should be included in the protection scope of the present application.

Claims

1. A power distribution device, characterized by, include: The base includes a base housing, the base housing including a first sidewall extending along a first direction, the first sidewall having a receiving hole; A relay is fixed inside the base housing and located on one side of the first sidewall along a second direction, which intersects the first direction. The relay includes at least two contacts, and an outwardly extending insulating barrier structure is provided on the relay. The insulating barrier structure is disposed between the at least two contacts and is used to separate the at least two contacts. One end of the insulating barrier structure facing the first sidewall is accommodated in the receiving hole.

2. The power distribution device of claim 1, wherein, The insulating barrier structure is elongated and extends along the height direction of the relay, and the height direction of the relay is perpendicular to the first direction and the second direction; The receiving hole is an elongated hole, and its size is greater than or equal to the size of the insulating barrier structure along the height direction of the relay.

3. The power distribution device of claim 1, wherein, The relay includes a peripheral sidewall, and the insulating barrier structure is an injection-molded rib that protrudes outward from the peripheral sidewall.

4. The power distribution device of claim 1, wherein, The receiving hole is a blind hole recessed in the first sidewall facing the relay.

5. The power distribution device of claim 1, wherein, The receiving hole is a through hole that penetrates the first sidewall along the second direction.

6. The power distribution device of any one of claims 1-5, wherein, The power distribution device also includes a conductive sheet, which is fixedly connected to the side of the relay that has the insulating barrier structure, and the conductive sheet is electrically connected to the contact.

7. The power distribution device of claim 6, wherein, The power distribution device also includes countersunk screws, which fix the conductive plate to the relay. The conductive sheet has a receiving groove for accommodating the head of the countersunk screw, and the height of the countersunk screw does not exceed the surface of the conductive sheet.

8. The power distribution device of claim 6, wherein, The conductive sheet is welded to the contact point.

9. The power distribution device of any one of claims 1-5, wherein, The power distribution device also includes a first battery management circuit board, which is fixedly connected to the base.

10. The power distribution device of claim 9, wherein, The power distribution device further includes a second battery management circuit board disposed on the base. The first battery management circuit board is disposed on the side of the relay facing away from the first sidewall along the second direction, and the second battery management circuit board is disposed on the side of the base along its height direction, the height direction of the base being perpendicular to both the first and second directions; or, The first battery management circuit board is disposed on one side of the base along its height direction, and the first battery management circuit board includes a first circuit board module and a second circuit board module that are electrically connected.

11. The power distribution device of any one of claims 1-5, wherein, The power distribution device also includes an assembly component, which includes at least one of a conductive sheet and a fuse. The assembly component is provided with a locking hole and a pre-fixing hole. The diameter of the pre-fixing hole is smaller than that of the locking hole. The assembly component can be fixed by fasteners inserted into the locking hole. The pre-fixing hole is used to install a connector to fix the assembly component through the connector.

12. The power distribution device of claim 11, wherein, The connector is a hand-tightening bolt, which includes an integrally formed bolt part and a hand-tightening part.

13. A battery device characterized by comprising: It includes a power distribution device and a battery cell assembly as described in any one of claims 1 to 12, wherein the battery cell assembly is electrically connected to the power distribution device.

14. An electrical device, comprising: A battery device as claimed in claim 13 for storing or providing electrical energy.

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