Power distribution device, battery and electric equipment

Abstract

The invention relates to the field of batteries, and provides a power distribution device, a battery and electric equipment. The power distribution device comprises a base and a relay. The base forms an accommodating cavity. The relay is fixedly installed on the base. The relay comprises a switch unit, and at least part of the outer wall of the switch unit is exposed in the accommodating cavity. The inner wall of the accommodating cavity is connected to the relay so as to fix the relay in the accommodating cavity. The power distribution device can fix the relay in the accommodating cavity of the base. And the relay fixed in the accommodating cavity can be protected by enabling at least part of the outer wall of the switch unit of the relay to be exposed in the accommodating cavity and replacing a shell structure of the relay with the inner wall of the accommodating cavity. Therefore, on the basis of ensuring that the base can play roles of limiting, fixing, protecting and the like on the relay, a shell structure of the relay can be effectively omitted, so that the overall layout of the base and the relay can be compact, an integrated, miniaturized, lightweight and concise power distribution device can be formed, and the design margin and the space waste can be reduced.

Description

Technical Field

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

[0002] The power distribution device is a control unit that distributes battery energy, and can especially distribute high voltage to the battery. The power distribution device usually includes a housing, and electrical components such as relays assembled in the housing. However, existing power distribution devices have large design margins and space waste, resulting in a large size of the power distribution device. Summary of the invention

[0003] The embodiments of the present application provide a power distribution device, a battery and an electrical device, aiming to solve the problem that existing power distribution devices have large design margins and space waste, resulting in a large size of the power distribution device.

[0004] To achieve the above purpose, the technical solution adopted in the embodiment of the present application is:

[0005] In a first aspect, a power distribution device is provided, comprising:

[0006] A base, forming a receiving cavity;

[0007] The relay is fixedly mounted on the base, and comprises a switch unit. At least part of the outer wall of the switch unit is exposed in the accommodating cavity. The inner wall of the accommodating cavity is connected to the relay to fix the relay in the accommodating cavity.

[0008] The power distribution device provided in the embodiment of the present application can fix the relay in the accommodating cavity by accommodating the relay in the accommodating cavity and connecting the inner wall of the accommodating cavity to the relay. On this basis, the relay fixedly installed in the accommodating cavity can be protected by exposing at least part of the outer wall of its switch unit in the accommodating cavity so as to replace its own shell structure with the inner wall of the accommodating cavity. Based on this, the shell structure of the relay itself can be effectively omitted on the basis of ensuring that the base can play the role of accommodating, limiting, fixing, and protecting the relay, which can be conducive to the compact overall layout of the base and the relay, so as to form an integrated, miniaturized, lightweight, and simplified power distribution device, which can effectively reduce the design margin, space waste, and occupied space of the power distribution device, and can effectively reduce the weight of the power distribution device, which can help reduce the production cost of the power distribution device.

[0009] In some embodiments, the relay abuts at least a portion of the inner wall.

[0010] By adopting the above scheme, the relay can be abutted against at least part of the inner wall to ensure and enhance the limiting and positioning effect of the inner wall of the accommodating chamber on the relay. Based on this, it is conducive to stabilizing the installation state of the relay in the accommodating chamber, especially when the relay vibrates during operation, the state of the relay in the accommodating chamber can be reliably stabilized, thereby reducing the risk of the relay falling out of the accommodating chamber. In addition, since the relay abuts against at least part of the inner wall, the space margin of the accommodating chamber after the relay is matched can be constrained and reduced, thereby reducing the design margin, space waste and occupied space of the distribution device, and can be conducive to the miniaturization and lightweight of the distribution device.

[0011] In some embodiments, the relay has a first gap between it and at least a portion of the inner wall.

[0012] By adopting the above scheme, during the assembly of the relay being taken and placed in the accommodating chamber, an assembly margin can be formed through the first gap between the relay and at least a portion of the inner wall, providing an assembly space, so that the relay can be smoothly taken and placed in the accommodating chamber, thereby improving the assembly convenience and assembly efficiency between the relay and the accommodating chamber. In addition, when the relay has been placed in the accommodating chamber, a connection space can be formed through the first gap between the relay and at least a portion of the inner wall, so that the relay and the accommodating chamber can be connected to each other at the connection space, thereby facilitating the stable and reliable fixing of the relay to the accommodating chamber.

[0013] In some embodiments, the first gap is filled with structural adhesive, and the relay is bonded to at least a portion of the inner wall by the structural adhesive.

[0014] By adopting the above scheme, when the relay has been placed in the accommodating cavity, a connecting space can be formed through the first gap between the relay and at least part of the inner wall for filling with structural adhesive, so that the relay and the corresponding part of the inner wall can be reliably and firmly bonded together through the structural adhesive. Based on this, the fixing effect of the accommodating cavity on the relay can be effectively guaranteed and enhanced, which can help stabilize the installation state of the relay in the accommodating cavity, especially when the relay vibrates during operation, the state of the relay in the accommodating cavity can be reliably stabilized. In addition, since the first gap can be used to fill the structural adhesive, the first gap does not constitute the space margin of the accommodating cavity after it is matched with the relay, thereby reducing the design margin, space waste and occupied space of the distribution device, which can help the miniaturization and lightweight of the distribution device.

[0015] In some embodiments, the inner wall is provided with a protruding structure, and the inner wall abuts against the relay through at least a portion of the protruding structure.

[0016] By adopting the above scheme, the inner wall of the accommodating cavity can be provided with a protruding structure so that at least part of the protruding structure abuts against the relay, thereby ensuring and enhancing the limiting and positioning effect of the relay. Based on this, it can be beneficial to stabilize the installation state of the relay in the accommodating cavity, especially when the relay vibrates during operation, the state of the relay in the accommodating cavity can be reliably stabilized, thereby reducing the risk of the relay falling out of the accommodating cavity, and ensuring and improving the installation stability and operation reliability of the relay. On this basis, the contact area between the inner wall of the accommodating cavity and the relay can also be reduced accordingly. Based on this, the friction between the relay and the inner wall can be effectively reduced during the assembly of the relay in the accommodating cavity, thereby improving the assembly convenience between the relay and the accommodating cavity.

[0017] By adopting the above solution, it is also convenient for the inner wall to abut against the relay through part (i.e. at least part of the raised structure) and form a first gap with the relay through part (i.e. the area without the raised structure). Based on this, during the assembly of the relay in the receiving chamber, the first gap can be used to form an assembly margin and provide an assembly space to improve the assembly convenience between the relay and the receiving chamber. In addition, when the relay has been placed in the receiving chamber, a connection space can be formed through the first gap to facilitate the stable and reliable fixing of the relay to the receiving chamber.

[0018] In some embodiments, the accommodating cavity has an opening, and the inner wall includes a bottom wall, a top wall, a first side wall, a second side wall and a third side wall, the bottom wall is used to support the relay, the top wall is arranged opposite to the bottom wall, the first side wall is arranged opposite to the second side wall, and the third side wall is arranged opposite to the opening.

[0019] By adopting the above scheme, it is convenient to take the relay into and place it in the accommodating chamber through the opening. It is also convenient to limit and wrap the relay in all directions through the bottom wall, top wall, first side wall, second side wall and third side wall when the relay has been placed in the accommodating chamber, thereby ensuring and improving the installation stability of the relay in the accommodating chamber, and ensuring and improving the accommodating, limiting, fixing and protecting effects of the accommodating chamber on the relay.

[0020] In some embodiments, at least a portion of the bottom wall, the top wall, the first side wall, the second side wall, and the third side wall is provided with a protruding structure.

[0021] By adopting the above solution, during the assembly of the relay being taken and placed in the accommodating chamber, at least part of the bottom wall, top wall, first side wall, second side wall and third side wall can reduce the contact area between the bottom wall, top wall, first side wall, second side wall and third side wall through the provided protruding structure, so as to reduce the friction between the bottom wall and the relay; and a first gap can be formed with the relay through the area without the protruding structure, so as to form an assembly margin through the first gap and provide an assembly space. Thus, the assembly convenience between the relay and the accommodating chamber can be improved.

[0022] By adopting the above solution, when the relay is placed in the accommodating cavity, at least part of the bottom wall, top wall, first side wall, second side wall and third side wall can abut against the relay through at least part of the protruding structure to ensure and enhance the limiting and positioning effect of the relay; and a connecting space can be formed through the first gap to facilitate the stable and reliable fixing of the relay in the accommodating cavity. Therefore, the installation stability of the relay in the accommodating cavity can be improved.

[0023] In some embodiments, the protrusion structure provided on the bottom wall, the top wall, the first side wall and the second side wall is a first protrusion, and the first protrusion is extended in a direction away from the opening.

[0024] By adopting the above solution, during the assembly of the relay in the receiving chamber, at least part of the bottom wall, top wall, first side wall and second side wall can follow the disassembly direction of the relay and the receiving chamber through the first protrusion extending in the direction away from the opening, so as to reduce the friction between the relay and the receiving chamber, especially the friction in directions other than the disassembly direction. Thus, on the basis of ensuring the limiting effect of the relay, the assembly convenience and efficiency between the relay and the receiving chamber can be improved.

[0025] In some embodiments, the protrusion structure provided on the third side wall is a second protrusion, and there are at least two second protrusions, and the second protrusions are cross-connected.

[0026] By adopting the above solution, when the relay is placed in the accommodating cavity, the third side wall can abut against the relay through at least part of the cross-connected second protrusions to enhance the limiting and positioning effect of the relay; and the first gap can be formed through the cells between the second protrusions to form a connection space through the first gap. This can facilitate the improvement of the installation stability of the relay in the accommodating cavity.

[0027] In some embodiments, the accommodating cavity has an opening, and the power distribution device includes a covering member connected to the base for sealing the opening.

[0028] By adopting the above scheme, when the relay has been placed in the accommodating cavity and the relay has been connected to the inner wall of the accommodating cavity, the opening of the accommodating cavity can be blocked by the cover connected to the base. Based on this, on the one hand, the cover can cooperate with the base to form an all-round protection for the relay in the accommodating cavity, thereby ensuring and improving the protection effect of the distribution device on the relay, and ensuring and extending the service life of the relay and the distribution device. On the one hand, the cover can reliably prevent the relay from escaping from the opening of the accommodating cavity, especially preventing the relay from escaping from the accommodating cavity due to vibration during operation, thereby ensuring and improving the installation stability and installation reliability of the distribution device for the relay. On the one hand, the cover can reliably prevent external devices from contacting, colliding, and damaging the relay, thereby ensuring and extending the service life of the relay and the distribution device, and to a certain extent, it can also reduce the safety hazards of the distribution device accordingly.

[0029] In some embodiments, the cover member has a through hole therethrough for the contacts of the relay to pass through.

[0030] By adopting the above scheme, when the relay sets its contacts toward the opening side and the cover seals the opening of the accommodating cavity, the cover can be provided with a through hole to allow the contacts of the relay to pass through the through hole, so that the contacts of the relay are exposed to the cover and connected to the high-voltage circuit to control the on and off of the high-voltage circuit. Based on this, the respective functions of the cover and the relay can be taken into consideration, thereby ensuring the performance of the power distribution device.

[0031] In some embodiments, each cover member is provided with at least one through hole, each relay has at least two contacts, each through hole corresponds to at least one contact, and each through hole is used for allowing the corresponding contact to pass through.

[0032] By adopting the above scheme, when the relay sets its contacts toward the opening side and the cover seals the opening of the accommodating cavity, the cover can be provided with at least one through hole, and at least two contacts of the relay are exposed through the through hole one-to-one or one-to-many. Based on this, the respective functions of the cover and the relay can be taken into account, and the contacts of the relay can be connected to the high-voltage circuit and jointly play the role of controlling the on and off of the high-voltage circuit. In particular, when each through hole corresponds to a contact, the contacts of the relay can also be separated in different through holes, so as to improve the insulation between the contacts of the relay accordingly, thereby reducing the risk of short circuit and reducing the safety hazards of the power distribution device.

[0033] In some embodiments, the cover is provided with a barrier structure for isolating two adjacent contacts of the relay.

[0034] By adopting the above solution, when each contact of the relay passes through the corresponding through hole of the cover, the cover can insulate and separate the two adjacent contacts through the barrier structure provided between the two adjacent contacts. Thus, the creepage distance between the two adjacent contacts can be effectively increased, and the insulation between the two adjacent contacts can be effectively improved, thereby reducing the risk of short circuit and the potential safety hazard of the power distribution device.

[0035] In some embodiments, the power distribution device includes a shielding member, which is disposed on a side of the cover member facing away from the accommodating cavity and is used to shield the contacts of the relay.

[0036] By adopting the above scheme, the cover and the contacts of the relay exposed from the through hole of the cover can be shielded by a shielding member arranged on the side of the cover facing away from the accommodating cavity, while taking into account the respective functions of the cover and the relay, especially to ensure that the contacts of the relay are not exposed to the outside of the power distribution device. Based on this, on the one hand, the shielding member can be used to protect the contacts of the cover and the corresponding relay to ensure and extend the service life of the relay and the power distribution device. On the other hand, the shielding member can reliably prevent human hands or external devices from contacting the contacts of the relay to conduct electricity, thereby reducing the safety hazards of the power distribution device and improving the performance of the power distribution device.

[0037] In some embodiments, the covering piece is snap-connected to the inner wall of the accommodating cavity by snap-fitting.

[0038] By adopting the above solution, when the relay has been placed in the accommodating cavity and the relay has been connected to the inner wall of the accommodating cavity, the cover piece can be aligningly matched to the side of the relay close to the opening, and the buckle of the cover piece is connected to the corresponding buckle of the inner wall of the accommodating cavity, so as to conveniently and quickly realize the detachable connection of the cover piece to the base. Based on this, the connection convenience and connection reliability of the cover piece and the base can be guaranteed and improved, and it can be guaranteed that the cover piece can accurately and reliably block the opening of the accommodating cavity.

[0039] In some embodiments, there are at least two accommodating cavities, there are at least two relays, and at least some of the relays are installed in the accommodating cavities one-to-one.

[0040] By adopting the above scheme, the base can be fixedly installed with at least two relays one by one through at least two accommodating cavities. Based on this, it can be ensured that the base can play the role of accommodating, limiting, fixing, protecting, etc. for each relay fixedly installed in the accommodating cavity through each accommodating cavity, and at the same time, the shell structure of at least two relays can be omitted, so that the overall layout of the base and each relay can be compacted to a large extent, which is more conducive to the integration, miniaturization, lightweight and simplification of the power distribution device.

[0041] In some embodiments, the base is provided with at least one insulating structure, and the insulating structure is provided between two adjacent accommodating cavities to separate the contacts of the corresponding two relays.

[0042] By adopting the above solution, the base can be provided with an insulating structure between two adjacent accommodating cavities, so that the two adjacent accommodating cavities can be insulated and separated by the insulating structure, thereby the two relays correspondingly installed in the two accommodating cavities can be insulated and separated by the insulating structure, and in particular, the contacts of the corresponding two relays can be insulated and separated. Thus, the insulation between the contacts of the two adjacent shellless relays can be effectively improved, the risk of short circuit can be reduced, and the reliability and safety of the power distribution device can be improved.

[0043] In some embodiments, the power distribution device includes an electrical component and a cover, the electrical component includes a relay, and at least two electrical components are provided and are both mounted on a base;

[0044] The cover body is arranged on the same side of each electrical component and connected to the base. A circuit element is arranged on one side of the cover body facing each electrical component for electrically connecting with each electrical component.

[0045] By adopting the above scheme, by installing all electrical components on the base, on the one hand, it is easy to plan, optimize and compact the layout of the electrical components, so as to facilitate the compact overall layout of the base and the electrical components, and to facilitate the integration, miniaturization, lightness and simplicity of the power distribution device. On the other hand, it is convenient to form reliable protection for the electrical components installed on the base through the base, combined with the cover connected to the base, so as to ensure and extend the service life of the electrical components and the power distribution device.

[0046] By adopting the above scheme, by placing the integrated circuit elements on the side of the cover body facing the electrical components, it is convenient to form a better protection effect for the circuit elements through the cover body, so as to reduce the risk of damage to the circuit elements, thereby ensuring and extending the service life of the circuit elements. In addition, when the cover body is assembled to the base, it is convenient to complete the precise alignment and electrical connection between the circuit elements and the electrical components, so that the electrical connection relationship required by the electrical components can be reliably established through the circuit elements, ensuring that the power distribution device can achieve the required functions; and it can also reduce the assembly steps, improve the connection convenience and connection reliability between the circuit elements and the electrical components, and improve the assembly convenience and assembly efficiency of the power distribution device.

[0047] In some embodiments, the gap between an electrical device and an adjacent electrical device is a second gap, the electrical device is provided with a first connector, the first connector includes a first connecting portion for detachably connecting to a circuit element, and the first connecting portion is located outside each second gap of the corresponding electrical device.

[0048] By adopting the above scheme, when the gap between the electrical device and the electrical device arranged adjacent thereto are both defined as the second gap, by arranging the first connection part outside each second gap of the corresponding electrical device, on the one hand, it is convenient to perform the connection operation of the first connection part in the space outside each second gap of the corresponding electrical device, thereby ensuring and improving the convenience of connecting and disconnecting the first connection part. On the other hand, it is possible to make it unnecessary for each second gap of the electrical device to provide neither a storage space for the first connection part nor a connection operation space for the first connection part, thereby facilitating the compression of the gap between the electrical device and the electrical device arranged adjacent thereto as required, which is conducive to compacting the overall layout of each electrical device, thereby facilitating the formation of an integrated, compact, and miniaturized power distribution device.

[0049] In some embodiments, the circuit element includes a connector and a second connector, the connector is embedded in the cover, and the connector port of the connector is exposed outside the cover;

[0050] The second connecting member includes a conductive connecting portion and a second connecting portion, one end of the conductive connecting portion is connected to the connector, the other end of the conductive connecting portion is connected to the second connecting portion, and the second connecting portion is bent toward the corresponding electrical component for detachable connection with the corresponding electrical component.

[0051] In some embodiments, the conductive connection portion is embedded in the cover.

[0052] By adopting the above solution, the cover body can form a better protection effect for the part where the conductive connection part is embedded, thereby reducing the risk of interference, wear, damage, etc. of the conductive connection part, and extending the service life of the conductive connection part and the circuit element. In addition, since the conductive connection part is embedded in the cover body, the installation stability and installation accuracy of the circuit element relative to the cover body can be guaranteed and improved. Based on this, when the cover body is assembled to the base and the electrical connection between the circuit element and each electrical component is completed at the same time, the alignment accuracy between the circuit element and each electrical component can be effectively improved, thereby improving the connection convenience and connection reliability between the circuit element and each electrical component.

[0053] In some embodiments, the cover, the connector and the conductive connection portion are an integrated structure.

[0054] By adopting the above scheme, the cover body and the connector and the conductive connecting part embedded in the cover body can form an integrated structure. Based on this, the connection reliability, connection tightness, connection stability and connection strength between the cover body and the connector and the conductive connecting part can be effectively enhanced, the comprehensive structural strength of the cover body, the connector and the conductive connecting part can be effectively enhanced, the protective effect of the cover body on the connector and the conductive connecting part can be effectively enhanced, the risk of wear and damage of the connector can be reduced, and the risk of interference and wear of the conductive connecting part can be reduced.

[0055] By adopting the above scheme, the assembly process between the cover body and the connector, and between the cover body and the conductive connecting part can be simplified, and it is also convenient to complete the precise alignment between the second connecting part of the second connecting member and the first connecting part of the corresponding electrical device, and complete the electrical connection and coordination between the second connecting part and the corresponding first connecting part when assembling the cover body. That is, the connection process between the second connecting member and the electrical device can be simplified, thereby effectively reducing the assembly steps, effectively ensuring and improving the connection reliability between the connector and the electrical device, and effectively improving the assembly efficiency and structural reliability of the distribution device.

[0056] In some embodiments, the power distribution device includes an electrical component and an insulating heat conductive member, the electrical component includes a relay, and the electrical component is mounted on a base;

[0057] One side of the insulating heat conductive member is connected to at least a part of the electrical device, and the other side of the insulating heat conductive member is used to be connected to the heat exchange member. The insulating heat conductive member is used to transfer heat from the electrical device to the heat exchange member.

[0058] By adopting the above scheme, the power distribution device can be insulated and thermally connected to the electrical device through the insulating heat conductive part, and can be insulated and thermally connected to the external heat exchanger through the insulating heat conductive part. Based on this, on the one hand, the insulation performance of the insulating heat conductive part can be used to ensure that the electrical device and the heat exchanger can be insulated through the insulating heat conductive part, so that short circuits between the electrical device, the insulating heat conductive part and the heat exchanger can be basically avoided, and the risk of high-voltage short circuit ignition between the electrical device, the insulating heat conductive part and the heat exchanger can be effectively reduced. On the other hand, it is convenient to heat exchange and conduct heat between the electrical device and the heat exchanger through the insulating heat conductive part, especially to conduct the heat generated by the electrical device to the heat exchanger through the insulating heat conductive part, so as to diffuse and conduct the heat generated by the electrical device to the outside of the power distribution device, thereby effectively ensuring and improving the heat dissipation performance and heat dissipation efficiency of the power distribution device for the electrical device, effectively reducing the risk of thermal failure of the electrical device, and effectively ensuring and extending the service life of the electrical device and the power distribution device.

[0059] In some embodiments, the power distribution device includes a packaging seat connected to a side of the base close to the insulating heat conductive member;

[0060] The insulating heat-conducting component is installed on the packaging seat, and the surface of the insulating heat-conducting component facing away from the electrical device is exposed on the packaging seat.

[0061] By adopting the above scheme, the insulating heat conductive part can be fixedly installed through the packaging seat, so that the installation position and installation state of the insulating heat conductive part relative to the packaging seat are stable and firm, so that the insulating heat conductive part and the electrical device can be accurately and stably aligned, and the insulating heat conductive part and the electrical device can be accurately and reliably established. On this basis, since the insulating heat conductive part is insulated and thermally connected to the electrical device on the side facing the electrical device, and the surface of the insulating heat conductive part facing away from the electrical device is exposed to the packaging seat and thermally connected to the heat exchanger, it is convenient for the insulating heat conductive part to be directly insulated and thermally connected between the electrical device and the heat exchanger, thereby reducing the blocking effect of the packaging seat on the heat conduction path of the insulating heat conductive part, and ensuring and improving the heat conduction effect of the insulating heat conductive part between the electrical device and the heat exchanger.

[0062] In a second aspect, a battery is provided, comprising the power distribution device provided in an embodiment of the present application.

[0063] By adopting the above-mentioned solution, the battery can ensure and improve the space utilization, volume utilization and energy density of the battery by applying the power distribution device provided in the embodiment of the present application.

[0064] In a third aspect, an electrical device is provided, comprising the battery provided in an embodiment of the present application.

[0065] By adopting the above solution, the electrical equipment can ensure and improve the performance of the electrical equipment by applying the battery provided in the embodiment of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0066] In order to clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0067] Figure 1 A schematic diagram of the structure of a vehicle provided in some embodiments of the present application;

[0068] Figure 2 An exploded schematic diagram of a battery provided in some embodiments of the present application;

[0069] Figure 3 A partial structural schematic diagram of a battery provided in some embodiments of the present application;

[0070] Figure 4 A schematic diagram of the structure of a power distribution device provided in some embodiments of the present application;

[0071] Figure 5 A schematic diagram of the assembly structure of a base, a relay and a cover assembly provided in some embodiments of the present application;

[0072] Figure 6 for Figure 5 An exploded view of the base, relay and cover assembly is provided;

[0073] Figure 7 A schematic diagram of the assembly structure of a base and a relay provided in some embodiments of the present application;

[0074] Figure 8 A schematic diagram of the structure of a base provided in some embodiments of the present application;

[0075] Fig. 9 Schematic diagram of a power distribution device provided in some embodiments of the present application Figure 1 ;

[0076] Fig.10 for Fig. 9 Exploded schematic diagrams of the various electrical components, covers, and circuit elements provided;

[0077] Fig.11 for Fig. 9 Schematic diagram of the power distribution device provided Figure 2 ;

[0078] Fig.12 A front view of a power distribution device provided in some embodiments of the present application;

[0079] Fig.13 for Fig.12 A cross-sectional view along AA is provided.

[0080] Among them, the reference numerals in the figure are:

[0081] 1-battery, 2-controller, 3-motor; 10-battery unit; 20-box, 21-first part, 22-second part; 30-power distribution device; 40-heat exchange component, 41-thermal management component;

[0082] 31-electrical device, 311-conductive structure, 3111-heat-conducting surface, 3112-first conductive part, 3113-second conductive part, 3114-third conductive part; 312-relay, 3121-main positive relay, 3122-main negative relay, 3123-pre-charge relay, 3124-switch unit, 31241-iron core, 31242-coil, 31243-bracket; 3125-contact; 313-current sensor, 3131-shunt, 3132-Hall current sensor; 314-fuse, 3141-main fuse, 315-pre-charge resistor; 316-second gap, 317-first connecting piece, 3171-first connecting part; 32-base, 321-accommodating cavity ... 211-inner wall, 3212-bottom wall, 3213-top wall, 3214-first side wall, 3215-second side wall, 3216-third side wall, 3217-opening; 322-first gap; 323-protrusion structure, 3231-first protrusion, 3232-second protrusion; 324-insulating structure; 33-covering member, 331-through hole, 332-partitioning structure, 333-snap; 34-shielding member; 35-cover body; 36-circuit element, 361-connector, 3611-socket, 362-second connecting member, 3621-second connecting part, 3622-conductive connecting part; 37-insulating heat-conducting member; 38-packaging seat, 381-first limiting structure, 382-second limiting structure. DETAILED DESCRIPTION

[0083] In order to make the technical problems, technical solutions and beneficial effects to be solved by this application clear and understandable, the application is described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain this application and are not used to limit this application.

[0084] In the description of the present application, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0085] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or at least two of the features. In the description of this application, "at least two" means two or more, unless otherwise clearly and specifically defined.

[0086] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0087] In a battery, a power distribution device is a control unit that distributes battery energy, and can especially 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 terms of the assembly and coordination of the various components of the power distribution device, the power distribution device has a large design margin and space waste, resulting in a large size of the power distribution device, which is not conducive to the miniaturization of the power distribution device.

[0088] Therefore, some embodiments of the present application provide a power distribution device, which can fix the relay in the accommodating cavity by accommodating the relay in the accommodating cavity and connecting the inner wall of the accommodating cavity to the relay. On this basis, the relay fixedly installed in the accommodating cavity can be protected by exposing at least part of the outer wall of its switch unit in the accommodating cavity so as to replace its own shell structure with the inner wall of the accommodating cavity. Based on this, the shell structure of the relay itself can be effectively omitted on the basis of ensuring that the base can play the role of accommodating, limiting, fixing, and protecting the relay, so as to facilitate the compact overall layout of the base and the relay, so as to facilitate the formation of an integrated, miniaturized, lightweight, and simplified power distribution device, which can effectively reduce the design margin, space waste, and occupied space of the power distribution device, and can effectively reduce the weight of the power distribution device, which can help reduce the production cost of the power distribution device.

[0089] The power distribution device disclosed in the embodiment of the present application can be used for batteries to serve as a control unit for distributing battery energy and to distribute high voltage to the batteries.

[0090] The battery disclosed in the embodiment of the present application may be a modular structure including at least one battery cell to provide higher voltage and capacity, such as a battery module or a battery pack. Among them, the battery cell may be 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, etc.; the battery cell may be cylindrical, flat, rectangular or other shapes, etc.; the battery cell may be packaged in different ways to form a cylindrical battery cell, a square battery cell or a soft-pack battery cell, etc.

[0091] The battery disclosed in the embodiment of the present application can be used in electrical equipment that uses the battery as a power source, or in various energy storage systems that use the battery as an energy storage element. Electrical equipment may be, but is not limited to, vehicles, mobile phones, portable devices, laptops, ships, spacecraft, electric toys, and electric tools, etc. The vehicle may be a fuel vehicle, a gas vehicle, or a new energy vehicle, and the new energy vehicle may be a pure electric vehicle, a hybrid vehicle, or an extended-range vehicle, etc. Spacecraft include airplanes, rockets, space shuttles, and spacecraft, etc. Electric toys include fixed or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, etc. Electric tools include metal cutting electric tools, grinding electric tools, assembly electric tools, and railway electric tools, such as electric drills, electric grinders, electric wrenches, electric screwdrivers, electric hammers, impact drills, concrete vibrators, and electric planers, etc.

[0092] In order to illustrate the technical solution provided by the present application, the following is a detailed description with reference to specific drawings and embodiments, and taking "electrical equipment being a vehicle" as an example.

[0093] See also Figure 1 , Figure 1 A schematic diagram of the structure of a vehicle provided for some embodiments of the present application. The vehicle may be a fuel vehicle, a gas vehicle or a new energy vehicle, and the new energy vehicle may be a pure electric vehicle, a hybrid vehicle or an extended-range vehicle, etc. A battery 1 is provided inside the vehicle, and the battery 1 may be provided at the bottom, head or tail of the vehicle. The battery 1 is used to power the vehicle, for example, the battery 1 can be used as an operating power source for the vehicle. The vehicle may also include a controller 2 and a motor 3, and the controller 2 is used to control the battery 1 to power the motor 3, for example, for starting, navigating and driving the vehicle. Working power requirements.

[0094] In some embodiments of the present application, the battery 1 can be used not only as an operating power source for the vehicle, but also as a driving power source for the vehicle, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle.

[0095] See also Figure 2 , Figure 3 , Figure 2 This is a schematic diagram of an exploded view of a battery 1 provided in some embodiments of the present application. Figure 3A partial structural diagram of a battery 1 provided in some embodiments of the present application. The battery 1 includes a battery cell 10 and a box 20, and the battery cell 10 is contained in the box 20. Among them, the box 20 is used to provide a storage space for the battery cell 10, and the structure of the box 20 can be designed in a diversified and flexible manner. In some embodiments, the box 20 may include a first part 21 and a second part 22, and the first part 21 and the second part 22 cover each other, and the first part 21 and the second part 22 jointly define a storage space for accommodating the battery cell 10. The second part 22 may be a hollow structure with one end open, and the first part 21 may be a plate-like structure, and the first part 21 covers the open side of the second part 22, so that the first part 21 and the second part 22 jointly define a storage space; the first part 21 and the second part 22 may also be hollow structures with one side open, and the open side of the first part 21 covers the open side of the second part 22. Of course, the box 20 formed by the first part 21 and the second part 22 can be in a variety of shapes, such as a cylinder, a cuboid, etc.

[0096] In the battery 1 , there may be at least two battery cells 10 , and the at least two battery cells 10 may be connected in series, in parallel, or in mixed connection. Mixed connection means that at least two battery cells 10 are connected in series and in parallel.

[0097] For example, the battery unit 10 may be a battery cell. At least two battery cells may be directly connected in series, in parallel, or in mixed connection, and then the whole formed by at least two battery cells is accommodated in the box 20. Among them, the battery cell may be a lithium-ion secondary battery, a lithium-sulfur battery, a sodium-lithium-ion battery, a sodium-ion battery, or a magnesium-ion battery, etc. The battery cell may be cylindrical, flat, rectangular, or in other shapes, etc. The battery cell may be packaged in different ways to form a cylindrical battery cell, a square battery cell, or a soft-pack battery cell, etc.

[0098] Alternatively, the battery unit 10 may be a battery module or a battery module. At least two battery cells may be connected in series, in parallel, or in a mixed connection to form a modular structure, i.e., a battery module or a battery module; at least two battery modules or battery modules may be connected in series, in parallel, or in a mixed connection to form a whole, and accommodated in the box 20.

[0099] In some embodiments, the battery 1 may further include a power distribution device 30, which is accommodated in the accommodation space of the box 20. The power distribution device 30 is connected to the battery unit 10, etc. The power distribution device 30 can be used as a control unit for distributing energy of the battery 1 and performing high voltage distribution on the battery 1.

[0100] In some embodiments, the battery 1 may further include a thermal management component 41, which is contained in the containing space of the box 20 and is used to perform heat exchange with components such as the battery cell 10 and the power distribution device 30 to adjust the temperature of the battery 1. The thermal management component 41 may be a liquid cooling plate. In some embodiments, one thermal management component 41 may be provided and laid on the same side of components such as the battery cell 10 and the power distribution device 30 to facilitate heat exchange with components such as the battery cell 10 and the power distribution device 30. Of course, in some embodiments, at least two thermal management components 41 may also be provided to facilitate flexible design of the position and state of the thermal management component 41, and facilitate heat exchange between at least two thermal management components 41 and components such as the battery cell 10 and the power distribution device 30. The thermal management component 41 may also be an air cooling system, and the airflow generated by the air cooling system may pass through components such as the battery cell 10 and the power distribution device 30 to facilitate heat exchange with components such as the battery cell 10 and the power distribution device 30. Of course, the thermal management component 41 may also be other structural forms.

[0101] Of course, the battery 1 may also include other structures. For example, the battery 1 may also include a busbar component (not shown in the figure) for achieving electrical connection between at least two battery cells 10 .

[0102] Of course, in some embodiments, the battery 1 may not include the box body 20, but at least two battery cells 10 are electrically connected and formed into a whole through necessary fixing structures and then assembled into an electrical device.

[0103] See also Figure 4 , Figure 5 , Figure 6 Some embodiments of the present application provide a power distribution device 30, which includes a base 32 and a relay 312. The base 32 forms a receiving cavity 321. The relay 312 is fixedly mounted on the base 32. The relay 312 includes a switch unit 3124, and at least part of the outer wall of the switch unit 3124 is exposed in the receiving cavity 321. The inner wall 3211 of the receiving cavity 321 is connected to the relay 312 to fix the relay 312 to the receiving cavity 321.

[0104] It should be noted that the base 32 is a shell component of the power distribution device 30 and has a certain structural strength and rigidity. The base 32 is provided with at least one accommodating cavity 321, and the accommodating cavity 321 can be used to fix and install the relay 312. The accommodating cavity 321 has an opening 3217, and the opening 3217 of the accommodating cavity 321 can be used for the relay 312 to be taken in and put into the accommodating cavity 321. Among them, the opening 3217 of the accommodating cavity 321 can be set on any side of the base 32. Among them, when there are at least two accommodating cavities 321, the openings 3217 of at least two accommodating cavities 321 can be set on the same side of the base 32, or can be set on different sides of the base 32.

[0105] It should also be noted that the relay 312 is an electrical control device, which is an electrical device 31 that causes a predetermined step change in the controlled quantity in the electrical output circuit when the change in the input quantity (excitation quantity) reaches the specified requirement. The relay 312 may include a main positive relay 3121, a main negative relay 3122, etc.

[0106] The relay 312 includes a contact 3125 and a switch unit 3124, wherein the contact 3125 is used to be connected to the high-voltage circuit, and the switch unit 3124 is used to control the contact 3125 to be closed or disconnected. By closing or disconnecting the contact 3125, the on-off of the high-voltage circuit can be controlled. In some embodiments, the switch unit 3124 can be energized to generate an electromagnetic force, causing the contact 3125 to be closed or disconnected. For example, the switch unit 3124 may include an iron core 31241, and a coil 31242 wound around the outside of the iron core 31241. The coil 31242 can generate an electromagnetic force when current is passed, causing the contact 3125 to be closed or disconnected. Of course, in other embodiments, the switch unit 3124 may adopt other structural forms, or may adopt other principles to achieve the control of the contact 3125 to be closed or disconnected.

[0107] It should also be noted that the relay 312 can be fixedly installed in the accommodating cavity 321. The number of relays 312 can be greater than or equal to the number of accommodating cavities 321, so that at least some relays 312 can be fixedly installed in each accommodating cavity 321 one by one.

[0108] The relay 312 fixedly installed in the accommodating cavity 321 can expose at least part of the outer wall of the switch unit 3124 in the accommodating cavity 321. The outer wall of the switch unit 3124 includes the exposed outer surface parts of the components of the switch unit 3124. For example, the switch unit 3124 includes an iron core 31241 and a coil 31242 wound around the outside of the iron core 31241; if the outer circumference of the iron core 31241 is completely wound and blocked by the coil 31242, the outer wall of the switch unit 3124 mainly includes the outer circumference of the outermost circle of the coil 31242; if the outer circumference of the iron core 31241 is partially wound and blocked by the coil 31242, the outer wall of the switch unit 3124 includes the outer circumference of the outermost circle of the coil 31242 and the outer circumference of the iron core 31241 that is not blocked by the coil 31242. For another example, the switch unit 3124 includes an iron core 31241, a coil 31242 wound around the outside of the iron core 31241, and a bracket 31243 for supporting and fixing the iron core 31241. Then, the outer wall of the switch unit 3124 may include the outer surface of the bracket 31243, the outer peripheral surface of the outermost circle of the coil 31242 not blocked by the bracket 31243, and the outer peripheral surface of the iron core 31241 not blocked by the bracket 31243 and the coil 31242.

[0109] Based on this, the relay 312 fixedly installed in the accommodating cavity 321 can be protected by replacing its own shell structure with the inner wall 3211 of the accommodating cavity 321. Thus, the shell structure of the relay 312 itself can be omitted, that is, the relay 312 fixedly installed in the accommodating cavity 321 is a shellless relay. Among them, the inner wall 3211 of the accommodating cavity 321 refers to the walls that participate in enclosing and forming the accommodating cavity 321.

[0110] On this basis, the inner wall 3211 of the accommodating cavity 321 can be connected to the relay 312 located therein, so as to fix the relay 312 to the accommodating cavity 321 and limit the relay 312 from escaping from the accommodating cavity 321, especially limit the relay 312 from escaping from the accommodating cavity 321 due to vibration during operation. Among them, the inner wall 3211 of the accommodating cavity 321 can be connected to the relay 312 by a detachable connection method or a fixed connection method, so as to fix the relay 312 to the accommodating cavity 321. Among them, the detachable connection method can adopt, but is not limited to, snap-on connection, screw locking, etc. Among them, the fixed connection method can adopt, but is not limited to, bonding, etc.

[0111] In summary, the power distribution device 30 provided in the embodiment of the present application can fix the relay 312 to the accommodating cavity 321 by accommodating the relay 312 in the accommodating cavity 321 of the base 32 and connecting the inner wall 3211 of the accommodating cavity 321 to the relay 312. On this basis, the relay 312 fixedly installed in the accommodating cavity 321 can be protected by exposing at least part of the outer wall of the switch unit 3124 in the accommodating cavity 321 so as to replace its own shell structure with the inner wall 3211 of the accommodating cavity 321. Based on this, while ensuring that the base 32 can accommodate, limit, fix, and protect the relay 312, the outer shell structure of the relay 312 itself can be effectively omitted, which can facilitate the compactness of the overall layout of the base 32 and the relay 312, thereby facilitating the formation of an integrated, miniaturized, lightweight, and simplified distribution device 30, effectively reducing the design margin, space waste, and occupied space of the distribution device 30, effectively reducing the weight of the distribution device 30, and facilitating reducing the production cost of the distribution device 30.

[0112] See also Figure 4 , Figure 7 , Figure 8 In some embodiments of the present application, the relay 312 abuts against at least a portion of the inner wall 3211 .

[0113] It should be noted that the inner wall 3211 of the accommodating cavity 321 includes various walls that participate in enclosing and forming the accommodating cavity 321. The relay 312 may abut against one wall or at least two walls. The wall abutting against the relay 312 may abut against the relay 312 partially or entirely (i.e., the entire wall).

[0114] By adopting the above scheme, the relay 312 can be abutted against at least part of the inner wall 3211 to ensure and enhance the limiting and positioning effect of the inner wall 3211 of the accommodating chamber 321 on the relay 312. Based on this, it is conducive to stabilizing the installation state of the relay 312 in the accommodating chamber 321, especially when the relay 312 generates vibration during operation, the state of the relay 312 in the accommodating chamber 321 can be reliably stabilized, thereby reducing the risk of the relay 312 escaping from the accommodating chamber 321. In addition, since the relay 312 is abutted against at least part of the inner wall 3211, the space margin of the accommodating chamber 321 after being matched with the relay 312 can be constrained and reduced, thereby reducing the design margin, space waste and occupied space of the power distribution device 30, and miniaturization and lightweighting of the power distribution device 30.

[0115] See also Figure 4 , Figure 7 , Figure 8In some embodiments of the present application, a first gap 322 is provided between the relay 312 and at least a portion of the inner wall 3211 .

[0116] It should be noted that the inner wall 3211 of the accommodating cavity 321 includes various walls that participate in enclosing and forming the accommodating cavity 321. The relay 312 may form a first gap 322 with one wall. The relay 312 may also form a first gap 322 with at least two walls. Of course, the first gaps 322 between the relay 312 and different walls may be set the same or differently. The wall having the first gap 322 with the relay 312 may partially abut against the relay 312 to form the first gap 322 with the relay 312, or may form the first gap 322 with the relay 312 through the entire wall (i.e., the entire wall).

[0117] By adopting the above solution, during the assembly of the relay 312 being taken and placed in the accommodating cavity 321, an assembly margin can be formed through the first gap 322 between the relay 312 and at least a portion of the inner wall 3211, providing an assembly space, so that the relay 312 can be smoothly taken and placed in the accommodating cavity 321, thereby improving the assembly convenience and assembly efficiency between the relay 312 and the accommodating cavity 321. In addition, when the relay 312 has been placed in the accommodating cavity 321, a connection space can be formed through the first gap 322 between the relay 312 and at least a portion of the inner wall 3211, so that the relay 312 and the accommodating cavity 321 can be mutually connected at the connection space, thereby facilitating the relay 312 to be stably and reliably fixed to the accommodating cavity 321.

[0118] See also Figure 4 , Figure 7 , Figure 8 In some embodiments of the present application, the first gap 322 is used to fill with structural adhesive (not shown in the figure), and the relay 312 is at least partially bonded to the inner wall 3211 by the structural adhesive.

[0119] It should be noted that, when the relay 312 is placed in the accommodating cavity 321, the first gap 322 can be filled with structural adhesive so that the relay 312 and the corresponding part of the inner wall 3211 can be bonded and fixed via the structural adhesive. The structural adhesive refers to an adhesive suitable for bonding strong structural parts. The first gap 322 can be filled with the structural adhesive in its entirety or partially.

[0120] By adopting the above scheme, when the relay 312 has been placed in the accommodating cavity 321, a connecting space can be formed through the first gap 322 between the relay 312 and at least part of the inner wall 3211, which is used to fill the structural adhesive, so that the relay 312 and the corresponding part of the inner wall 3211 can be reliably and firmly bonded together through the structural adhesive. Based on this, the fixing effect of the accommodating cavity 321 on the relay 312 can be effectively guaranteed and enhanced, so that the installation state of the relay 312 in the accommodating cavity 321 can be stabilized, especially when the relay 312 generates vibration during operation, the state of the relay 312 in the accommodating cavity 321 can be reliably stabilized. In addition, since the first gap 322 can be used to fill the structural adhesive, the first gap 322 may not constitute the space margin of the accommodating cavity 321 after the relay 312 is matched, thereby reducing the design margin, space waste and occupied space of the power distribution device 30, which can be conducive to the miniaturization and lightweight of the power distribution device 30.

[0121] In some embodiments, on the basis of ensuring that the first gap 322 meets the requirements of the assembly space and the connection space, the thickness of the first gap 322 can be reduced accordingly, and in particular, the thickness of the first gap 322 can be made smaller than the wall thickness of each side of the shell structure of the shell relay of the existing power distribution device. For example, assuming that the wall thickness of each side of the shell structure of the shell relay of the existing power distribution device is about 2.0 mm, the thickness of the first gap 322 can be greater than 0 mm and less than 2.0 mm, for example, it can be 0.5 mm, 1.0 mm, 1.5 mm, 1.7 mm, 1.9 mm, etc. Among them, the thickness of the first gap 322 refers to the minimum distance dimension of the first gap 322 from the corresponding wall to the corresponding side of the relay 312. Based on this, it can be ensured that the power distribution device 30 provided in this embodiment can save a certain amount of space margin relative to the existing power distribution device, thereby reducing the design margin, space waste and occupied space of the power distribution device 30, which can be conducive to the miniaturization and lightweight of the power distribution device 30.

[0122] See also Figure 5 , Figure 7 , Figure 8 In some embodiments of the present application, the inner wall 3211 is provided with a protruding structure 323 , and the inner wall 3211 abuts against the relay 312 through at least a portion of the protruding structure 323 .

[0123] It should be noted that the inner wall 3211 of the accommodating cavity 321 includes various walls that participate in enclosing and forming the accommodating cavity 321. One of the walls may be provided with the protruding structure 323, or at least two walls may be provided with the protruding structure 323. In particular, the wall that abuts against the relay 312 may be provided with the protruding structure 323. The inner wall 3211 may abut against the relay 312 via part or all of the protruding structures 323.

[0124] By adopting the above scheme, the inner wall 3211 of the accommodating chamber 321 can be provided with a protruding structure 323, so that at least part of the protruding structure 323 abuts against the relay 312, thereby ensuring and enhancing the limiting and positioning effect of the relay 312. Based on this, it is beneficial to stabilize the installation state of the relay 312 in the accommodating chamber 321, especially when the relay 312 generates vibration during operation, the state of the relay 312 in the accommodating chamber 321 can be reliably stabilized, thereby reducing the risk of the relay 312 escaping from the accommodating chamber 321, and ensuring and improving the installation stability and operation reliability of the relay 312. On this basis, the contact area between the inner wall 3211 of the accommodating chamber 321 and the relay 312 can also be reduced accordingly. Based on this, during the assembly period of the relay 312 being taken and placed in the accommodating chamber 321, the friction between the relay 312 and the inner wall 3211 can be effectively reduced, thereby improving the assembly convenience between the relay 312 and the accommodating chamber 321.

[0125] Furthermore, when the inner wall 3211 is in contact with the relay 312 through at least part of the protruding structure 323, the area of ​​the inner wall 3211 where the protruding structure 323 is not provided can form a first gap 322 with the relay 312. Therefore, by adopting the above scheme, it is also convenient for the inner wall 3211 to be in contact with the relay 312 through part (i.e., at least part of the protruding structure 323) and form a first gap 322 with the relay 312 partly (i.e., the area where the protruding structure 323 is not provided). Based on this, during the assembly of the relay 312 being taken and placed in the accommodating cavity 321, an assembly margin can be formed through the first gap 322 to provide an assembly space to improve the assembly convenience between the relay 312 and the accommodating cavity 321. It is also possible to form a connection space through the first gap 322 when the relay 312 has been placed in the accommodating cavity 321, so as to facilitate the relay 312 to be stably and reliably fixed to the accommodating cavity 321.

[0126] See also Figure 5 , Figure 7 , Figure 8 In some embodiments of the present application, the accommodating cavity 321 has an opening 3217. The inner wall 3211 includes a bottom wall 3212, a top wall 3213, a first side wall 3214, a second side wall 3215, and a third side wall 3216. The bottom wall 3212 is used to support the relay 312, and the top wall 3213 is arranged opposite to the bottom wall 3212. The first side wall 3214 is arranged opposite to the second side wall 3215. The third side wall 3216 is arranged opposite to the opening 3217.

[0127] It should be noted that the accommodating chamber 321 has an opening 3217, and the opening 3217 of the accommodating chamber 321 can be used for the relay 312 to be taken and placed in the accommodating chamber 321. The inner wall 3211 of the accommodating chamber 321 includes a bottom wall 3212, a top wall 3213, a first side wall 3214, a second side wall 3215 and a third side wall 3216 that participate in enclosing and forming the accommodating chamber 321, and constitute the other five sides of the accommodating chamber 321 except the opening 3217. Among them, the bottom wall 3212 refers to a wall mainly used to support the relay 312. The top wall 3213 refers to a wall arranged opposite to the bottom wall 3212, and is used to cooperate with the bottom wall 3212 to limit the relay 312. The third side wall 3216 refers to a wall arranged opposite to the opening 3217, and is used to limit and position the relay 312 in a direction away from the opening 3217, especially to prevent the relay 312 from escaping from the accommodating chamber 321 in a direction away from the opening 3217. The first side wall 3214 and the second side wall 3215 refer to the remaining two oppositely disposed walls, and the first side wall 3214 and the second side wall 3215 are used together to limit the relay 312 .

[0128] By adopting the above scheme, it is convenient to take the relay 312 into and place it in the accommodating cavity 321 through the opening 3217. It is also convenient to limit and wrap the relay 312 in all directions through the bottom wall 3212, the top wall 3213, the first side wall 3214, the second side wall 3215 and the third side wall 3216 when the relay 312 has been placed in the accommodating cavity 321, so as to ensure and improve the installation stability of the relay 312 in the accommodating cavity 321, and ensure and improve the accommodating, limiting, fixing and protecting effects of the accommodating cavity 321 on the relay 312.

[0129] See also Figure 6 , Figure 7 , Figure 8 In some embodiments of the present application, at least a portion of the bottom wall 3212 , the top wall 3213 , the first side wall 3214 , the second side wall 3215 and the third side wall 3216 are provided with a protruding structure 323 .

[0130] It should be noted that, among the bottom wall 3212, the top wall 3213, the first side wall 3214, the second side wall 3215 and the third side wall 3216, some of the walls may be provided with the protruding structure 323, or all of the walls may be provided with the protruding structure 323. The wall provided with the protruding structure 323 may abut against the relay 312 through at least part of the protruding structure 323, or may form a first gap 322 with the relay 312 through an area where the protruding structure 323 is not provided.

[0131] By adopting the above solution, during the assembly of the relay 312 being taken and placed in the accommodating chamber 321, at least part of the walls among the bottom wall 3212, the top wall 3213, the first side wall 3214, the second side wall 3215 and the third side wall 3216 can reduce the contact area between them and the relay 312 through the provided protruding structure 323, so as to reduce the friction between them and the relay 312; and the first gap 322 can be formed with the relay 312 through the area where the protruding structure 323 is not provided, so as to form an assembly margin through the first gap 322 and provide an assembly space. Thus, the assembly convenience between the relay 312 and the accommodating chamber 321 can be improved.

[0132] By adopting the above solution, when the relay 312 is placed in the accommodating cavity 321, at least part of the bottom wall 3212, the top wall 3213, the first side wall 3214, the second side wall 3215 and the third side wall 3216 can abut against the relay 312 through at least part of the protruding structure 323, so as to ensure and enhance the limiting and positioning effect of the relay 312; and a connecting space can be formed through the first gap 322, so as to stably and reliably fix the relay 312 to the accommodating cavity 321. Therefore, the installation stability of the relay 312 in the accommodating cavity 321 can be improved.

[0133] See also Figure 6 , Figure 7 , Figure 8 In some embodiments of the present application, the protrusion structure 323 provided on the bottom wall 3212 , the top wall 3213 , the first side wall 3214 and the second side wall 3215 is a first protrusion 3231 , and the first protrusion 3231 is extended in a direction away from the opening 3217 .

[0134] It should be noted that if the bottom wall 3212, the top wall 3213, the first side wall 3214, and the second side wall 3215 are provided with protrusion structures 323, the provided protrusion structures 323 are first protrusions 3231. The first protrusions 3231 are extended in a direction away from the opening 3217, that is, the first protrusions 3231 are extended in a direction close to the third side wall 3216.

[0135] By adopting the above solution, during the assembly of the relay 312 when it is taken into and placed in the accommodating cavity 321, at least part of the walls of the bottom wall 3212, the top wall 3213, the first side wall 3214 and the second side wall 3215 can follow the disassembly direction of the relay 312 and the accommodating cavity 321 through the first protrusion 3231 extending in the direction away from the opening 3217, so as to reduce the friction between the relay 312 and the accommodating cavity 321, especially reducing the friction in directions other than the disassembly direction. In this way, the assembly convenience and efficiency between the relay 312 and the accommodating cavity 321 can be improved on the basis of ensuring the limiting effect on the relay 312.

[0136] See also Figure 6 , Figure 7 , Figure 8 In some embodiments of the present application, the protrusion structure 323 provided on the third side wall 3216 is a second protrusion 3232, and at least two second protrusions 3232 are provided, and each second protrusion 3232 is cross-connected.

[0137] It should be noted that if the third side wall 3216 is provided with a protrusion structure 323, the protrusion structure 323 provided is a second protrusion 3232. There are at least two second protrusions 3232. The second protrusions 3232 are cross-connected, that is, the extension directions of the second protrusions 3232 are different, so that the second protrusions 3232 can be cross-connected, for example, they can be cross-connected vertically and horizontally.

[0138] When the second protrusions 3232 are cross-connected, cells may be formed between the second protrusions 3232 , and when at least a portion of the second protrusions 3232 abut against the relay 312 , a first gap 322 may be formed in the cells.

[0139] By adopting the above solution, when the relay 312 is placed in the accommodating cavity 321, the third side wall 3216 can abut against the relay 312 through at least part of the cross-connected second protrusions 3232 to enhance the limiting and positioning effect of the relay 312; and the first gap 322 can be formed through the cells between the second protrusions 3232 to form a connection space through the first gap 322. Therefore, the installation stability of the relay 312 in the accommodating cavity 321 can be improved.

[0140] See also Figure 4 , Figure 5 , Figure 6 In some embodiments of the present application, the accommodating cavity 321 has an opening 3217 . The power distribution device 30 includes a cover 33 . The cover 33 is connected to the base 32 and is used to block the opening 3217 .

[0141] It should be noted that the accommodating chamber 321 has an opening 3217, and the opening 3217 of the accommodating chamber 321 can be used for the relay 312 to be taken in and placed in the accommodating chamber 321. The cover 33 is a component used to block the opening 3217. When the relay 312 has been placed in the accommodating chamber 321 and the relay 312 has been connected to the inner wall 3211 of the accommodating chamber 321, the cover 33 can be connected to the base 32 to block the opening 3217 through the cover 33. The connection between the cover 33 and the base 32 can be a fixed connection or a detachable connection. The cover 33 can be set in a one-to-one correspondence with the opening 3217 of the accommodating chamber 321, so that the cover 33 can be used to block the opening 3217 one-to-one. Of course, in other embodiments, the cover 33 can be used to block at least two openings 3217.

[0142] By adopting the above scheme, when the relay 312 has been placed in the accommodating chamber 321 and the relay 312 has been connected to the inner wall 3211 of the accommodating chamber 321, the opening 3217 of the accommodating chamber 321 can be blocked by the cover 33 connected to the base 32. Based on this, on the one hand, the cover 33 can cooperate with the base 32 to form an all-round protection for the relay 312 in the accommodating chamber 321, thereby ensuring and improving the protection effect of the distribution device 30 on the relay 312, and ensuring and extending the service life of the relay 312 and the distribution device 30. On the one hand, the cover 33 can reliably prevent the relay 312 from escaping from the opening 3217 of the accommodating chamber 321, especially preventing the relay 312 from escaping from the accommodating chamber 321 due to vibration during operation, thereby ensuring and improving the installation stability and installation reliability of the distribution device 30 on the relay 312. On the one hand, the cover 33 can reliably prevent external devices from contacting, colliding with, and damaging the relay 312, thereby ensuring and extending the service life of the relay 312 and the distribution device 30, and to a certain extent also reducing the safety hazards of the distribution device 30.

[0143] See also Figure 4 , Figure 5 , Figure 6 In some embodiments of the present application, the cover member 33 has a through hole 331 through which the contact 3125 of the relay 312 passes.

[0144] It should be noted that the relay 312 includes a contact 3125, and the contact 3125 is used to be connected to the high-voltage circuit. By closing or opening the contact 3125, the on and off of the high-voltage circuit can be controlled.

[0145] When the relay 312 is arranged with its contact 3125 facing the opening 3217, the cover 33 is provided with a through hole 331, which penetrates the cover 33 in a direction away from the accommodating cavity 321. The through hole 331 can be used to allow the contact 3125 of the relay 312 to pass through, so that the contact 3125 is exposed from the cover 33 and connected to the high-voltage circuit. Among them, the through hole 331 can be used to allow at least one contact 3125 to pass through.

[0146] By adopting the above scheme, when the relay 312 sets its contact 3125 toward the side of the opening 3217 and the cover 33 blocks the opening 3217 of the accommodating chamber 321, the cover 33 can be provided with a through hole 331, so that the contact 3125 of the relay 312 can pass through the through hole 331, so that the contact 3125 of the relay 312 is exposed to the cover 33 and connected to the high-voltage circuit to play the role of controlling the on and off of the high-voltage circuit. Based on this, the respective functions of the cover 33 and the relay 312 can be taken into consideration, so that the performance of the power distribution device 30 can be guaranteed.

[0147] Of course, in other embodiments, the relay 312 may have its contact 3125 disposed toward the third side wall 3216 . In this case, a corresponding hole structure may be disposed on the third side wall 3216 for the contact 3125 of the relay 312 to pass through.

[0148] See also Figure 4 , Figure 5 , Figure 6 In some embodiments of the present application, each cover member 33 is provided with at least one through hole 331, each relay 312 has at least two contacts 3125, each through hole 331 corresponds to at least one contact 3125, and each through hole 331 is used for the corresponding contact 3125 to pass through.

[0149] It should be noted that, in some cases, the relay 312 is provided with at least two contacts 3125 , so as to be closed or opened respectively via each contact 3125 , thereby jointly controlling the on-off of the high-voltage circuit.

[0150] The cover member 33 may be provided with at least one through hole 331. In some embodiments, the number of through holes 331 is equal to the number of contacts 3125 of the relay 312, so that the through holes 331 can be provided in a one-to-one correspondence with the contacts 3125 of the relay 312, so that each through hole 331 can be provided one-to-one for each contact 3125 of the relay 312 to pass through. In other embodiments, the number of through holes 331 is less than the number of contacts 3125 of the relay 312, in which case, each through hole 331 corresponds to at least one contact 3125, some through holes 331 correspond to at least two contacts 3125, and the through holes 331 can allow the corresponding contacts 3125 to pass through.

[0151] By adopting the above scheme, when the relay 312 sets its contact 3125 toward the side of the opening 3217, and the cover 33 blocks the opening 3217 of the accommodating chamber 321, the cover 33 can be provided with at least one through hole 331, and at least two contacts 3125 of the relay 312 are exposed one-to-one or one-to-many through the through hole 331. Based on this, the respective functions of the cover 33 and the relay 312 can be taken into account, and the contacts 3125 of the relay 312 can be connected to the high-voltage circuit and play the role of controlling the on and off of the high-voltage circuit together. In particular, when each through hole 331 corresponds to a contact 3125, the contacts 3125 of the relay 312 can also be separated in different through holes 331, so as to improve the insulation between the contacts 3125 of the relay 312 accordingly, thereby reducing the risk of short circuit and reducing the safety hazards of the power distribution device 30.

[0152] See also Figure 4 , Figure 5 , Figure 6 In some embodiments of the present application, the cover member 33 is provided with a barrier structure 332 for separating two adjacent contacts 3125 of the relay 312 .

[0153] It should be noted that, in some cases, the relay 312 is provided with at least two contacts 3125 , so as to be closed or opened respectively via each contact 3125 , thereby jointly controlling the on-off of the high-voltage circuit.

[0154] On this basis, the cover 33 may be provided with at least one barrier structure 332. The barrier structure 332 includes insulating material, has insulating properties, and can play an insulating role. When each contact 3125 of the relay 312 passes through the corresponding through hole 331 of the cover 33, the barrier structure 332 can insulate and separate the contacts 3125 on both sides thereof, thereby increasing the creepage distance between the contacts 3125 on both sides of the barrier structure 332, and improving the insulation between the contacts 3125 on both sides of the barrier structure 332. Among them, at least one barrier structure 332 can be provided between each group of two adjacent contacts 3125.

[0155] The barrier structure 332 may be in a plate shape but is not limited to a plate shape.

[0156] The blocking structure 332 may be disposed on a side of the covering member 33 facing away from the accommodating cavity 321 , or may be disposed on a side of the covering member 33 facing the accommodating cavity 321 .

[0157] The barrier structure 332 may be an integrally formed component of the cover member 33 or a separately formed component.

[0158] By adopting the above solution, when each contact 3125 of the relay 312 passes through the corresponding through hole 331 of the cover member 33, the cover member 33 can insulate and separate two adjacent contacts 3125 through the barrier structure 332 disposed between two adjacent contacts 3125. Thus, the creepage distance between the two adjacent contacts 3125 can be effectively increased, and the insulation between the two adjacent contacts 3125 can be effectively improved, thereby reducing the risk of short circuit and the potential safety hazard of the power distribution device 30.

[0159] See also Figure 4 , Figure 5 , Figure 6 In some embodiments of the present application, the power distribution device 30 includes a shielding member 34 . The shielding member 34 is disposed on a side of the cover member 33 away from the accommodating cavity 321 , and is used to shield the contact 3125 of the relay 312 .

[0160] It should be noted that the shielding member 34 is a shell component of the power distribution device 30 and has a certain structural strength and rigidity. The shielding member 34 is arranged on the side of the cover member 33 away from the accommodating chamber 321. The shielding member 34 may be in the shape of a plate but is not limited to it. The shielding member 34 can be used to shield the cover member 33 and the contacts 3125 of the relay 312 exposed from the through hole 331 of the cover member 33 to ensure that the contacts 3125 of the relay 312 are not exposed to the outside of the power distribution device 30. Among them, the shielding member 34 can be optionally connected to the base 32 to stabilize and fix the installation position and installation state of the shielding member 34. Among them, the shielding member 34 can shield the contacts 3125 of each cover member 33 and each relay 312 at the same time. Of course, in other embodiments, the shielding member 34 can shield the cover member 33 and the contacts 3125 of the corresponding relay 312 one by one.

[0161] By adopting the above scheme, on the basis of taking into account the respective functions of the cover 33 and the relay 312, the cover 33 and the contacts 3125 of the relay 312 exposed from the through hole 331 of the cover 33 can be shielded by the shielding member 34 provided on the side of the cover 33 away from the accommodating chamber 321, especially to ensure that the contacts 3125 of the relay 312 are not exposed to the outside of the power distribution device 30. Based on this, on the one hand, the cover 33 and the contacts 3125 of the corresponding relay 312 can be protected by the shielding member 34 to ensure and extend the service life of the relay 312 and the power distribution device 30. On the other hand, the shielding member 34 can reliably prevent the contact 3125 of the relay 312 from being contacted by a human hand or an external device to conduct electricity, thereby reducing the safety hazards of the power distribution device 30 and improving the performance of the power distribution device 30.

[0162] See also Figure 4 , Figure 5 , Figure 6In some embodiments of the present application, the covering member 33 is snap-connected to the inner wall 3211 of the accommodating cavity 321 via a snap 333 .

[0163] It should be noted that at least one side of the cover 33 is provided with a buckle 333. For example, in some embodiments, the cover 33 is provided with buckles 333 on two opposite sides. The cover 33 can be connected to the inner wall 3211 of the accommodating cavity 321 through the buckles 333, so as to realize the detachable connection to the base 32 conveniently and quickly.

[0164] By adopting the above solution, when the relay 312 has been placed in the accommodating cavity 321 and the relay 312 has been connected to the inner wall 3211 of the accommodating cavity 321, the cover 33 can be aligned and matched to the side of the relay 312 close to the opening 3217, and the buckle 333 of the cover 33 is correspondingly buckled and connected to the inner wall 3211 of the accommodating cavity 321, so as to conveniently and quickly realize the detachable connection of the cover 33 to the base 32. Based on this, the connection convenience and connection reliability of the cover 33 and the base 32 can be guaranteed and improved, and it can be guaranteed that the cover 33 can accurately and reliably block the opening 3217 of the accommodating cavity 321.

[0165] Of course, in other embodiments, the cover 33 may be connected to the base 32 by bolts or the like.

[0166] See also Figure 4 , Figure 5 , Figure 6 In some embodiments of the present application, at least two accommodating cavities 321 are provided, at least two relays 312 are provided, and at least some of the relays 312 are installed in the accommodating cavities 321 one-to-one.

[0167] It should be noted that the base 32 is provided with at least two accommodating cavities 321. Each accommodating cavities 321 can be flexibly arranged on the base 32. The number of relays 312 can be greater than or equal to the number of accommodating cavities 321, so that at least some relays 312 can be fixedly installed in each accommodating cavity 321 one by one.

[0168] By adopting the above scheme, the base 32 can be fixedly installed with at least two relays 312 one by one through at least two accommodating cavities 321. Based on this, it can be ensured that the base 32 can play the role of accommodating, limiting, fixing, protecting, etc. for each relay 312 fixedly installed in the accommodating cavity 321 through each accommodating cavity 321, and at the same time, the shell structure of at least two relays 312 can be omitted, so that the overall layout of the base 32 and each relay 312 can be compacted to a large extent, which is more conducive to the integration, miniaturization, lightness and simplification of the power distribution device 30.

[0169] See also Figure 4 , Figure 5 , Figure 6 In some embodiments of the present application, the base 32 is provided with at least one insulating structure 324. The insulating structure 324 is provided between two adjacent accommodating cavities 321, and is used to separate the contacts 3125 of the corresponding two relays 312.

[0170] It should be noted that there are at least two accommodating cavities 321, and each accommodating cavities 321 can be flexibly arranged on the base 32. Due to the compact layout, in some cases, there are at least two accommodating cavities 321 arranged adjacent to each other, and the caseless relays in the two adjacent accommodating cavities 321 will be close to each other, especially the contacts 3125 of the two adjacent relays 312 will be close to each other.

[0171] Based on this, the base 32 can be provided with an insulating structure 324 between the two adjacently arranged accommodating cavities 321. At least one insulating structure 324 can be provided between each group of two adjacently arranged accommodating cavities 321. The insulating structure 324 includes an insulating material, has insulating properties, and can play an insulating role. The insulating structure 324 can insulate and separate the accommodating cavities 321 on both sides thereof, and in particular can insulate and separate the two relays 312 correspondingly installed in the two accommodating cavities 321, and in particular can insulate and separate the contacts 3125 of the corresponding two relays 312, thereby improving the insulation between the contacts 3125 of the relays 312 located on opposite sides of the insulating structure 324.

[0172] The structure of the insulating structure 324 can be designed in a variety of ways. For example, the insulating structure 324 can be a frame-shaped structure connected end to end.

[0173] The insulating structure 324 is an integrally formed component of the base 32 , and may also be a separately formed component.

[0174] By adopting the above solution, the base 32 can be provided with an insulating structure 324 between two adjacent accommodating cavities 321, so that the two adjacent accommodating cavities 321 can be insulated and separated by the insulating structure 324, thereby the two relays 312 correspondingly installed in the two accommodating cavities 321 can be insulated and separated by the insulating structure 324, and in particular, the contacts 3125 of the corresponding two relays 312 can be insulated and separated. Thus, the insulation between the contacts 3125 of the two adjacent shellless relays can be effectively improved, the risk of short circuit can be reduced, and the reliability and safety of the power distribution device 30 can be improved.

[0175] See also Figure 4 , Fig. 9 , Fig.10In some embodiments of the present application, the power distribution device 30 includes an electrical device 31 and a cover 35. The electrical device 31 includes a relay 312. There are at least two electrical devices 31, and both are mounted on the base 32. The cover 35 is provided on the same side of each electrical device 31 and is connected to the base 32. A circuit element 36 is provided on one side of the cover 35 facing each electrical device 31, which is used to be electrically connected to each electrical device 31.

[0176] It should be noted that the electrical device 31 may refer to any electrical component in the power distribution device 30. There are at least two electrical devices 31. The electrical devices 31 may include a relay 312, a current sensor 313, a fuse, an insurance 314, a pre-charging resistor 315, etc. Each electrical device 31 is mounted on the base 32 and has a stable mounting position and mounting state relative to the base 32.

[0177] The relay 312 is an electrical control device, which is an electrical device that causes a predetermined step change in the controlled quantity in the electrical output circuit when the change in the input quantity (excitation quantity) reaches the specified requirement. The relay 312 may include a main positive relay 3121, a main negative relay 3122, a pre-charge relay 3123, etc.

[0178] The current sensor 313 is a detection device that can sense the information of the measured current and can transform the sensed information into an electrical signal or other required form of information output that meets certain standards according to a certain rule to meet the requirements of information transmission, processing, storage, display, recording and control. Among them, the current sensor 313 may include a shunt 3131, a Hall current sensor 3132, etc.

[0179] A fuse is an electrical device that uses the heat generated by itself to melt the fuse and disconnect the circuit when the current exceeds the specified value.

[0180] Insurance 314, also known as a fuse, is a safety component used to protect the electrical device 31 from damage when a circuit is overloaded (such as too much current or too much voltage) or short-circuited. In some embodiments, insurance 314 can be used as a fuse.

[0181] The pre-charging resistor 315 is a component used to limit the size of the charging current in the initial stage of charging (ie, the power supply charges the capacitor) to reduce the risk of the charging current causing a large impact on the relay 312 and other components.

[0182] It should also be noted that the cover 35 is a shell component of the power distribution device 30 used to cover the base 32, and has a certain structural strength and rigidity. The cover 35 is connected to one side of the base 32 and stabilizes its installation position and installation state relative to the base 32. The cover 35 and the base 32 can be connected in a detachable connection or a fixed connection.

[0183] The cover 35 and the base 32 may be enclosed together to form an internal space. At least one electrical device 31 may be disposed in the internal space. For example, in some embodiments, a pre-charge relay 3123 and a pre-charge resistor 315 may be installed in the space enclosed by the cover 35 and the base 32.

[0184] The cover 35 is disposed on the same side of each electrical device 31. A circuit element 36 is disposed on the side of the cover 35 facing each electrical device 31. The circuit element 36 can be used to electrically connect with each electrical device 31 to establish the required electrical connection relationship of each electrical device 31, ensuring that the power distribution device 30 can achieve the required function.

[0185] By adopting the above scheme, by installing all the electrical components 31 on the base 32, on the one hand, it is easy to plan, optimize and compact the layout of the electrical components 31, so as to facilitate the compact overall layout of the base 32 and the electrical components 31, and facilitate the integration, miniaturization, lightness and simplicity of the power distribution device 30. On the other hand, it is easy to form reliable protection for the electrical components 31 installed on the base 32 through the base 32, in combination with the cover 35 connected to the base 32, so as to ensure and extend the service life of the electrical components 31 and the power distribution device 30.

[0186] By adopting the above scheme, by placing the integrated circuit element 36 on the side of the cover 35 facing each electrical device 31, the cover 35 can be used to provide a better protection effect on the circuit element 36, so as to reduce the risk of damage to the circuit element 36, thereby ensuring and extending the service life of the circuit element 36. In addition, when the cover 35 is assembled to the base 32, the precise alignment and electrical connection between the circuit element 36 and each electrical device 31 can be completed at the same time, so that the electrical connection relationship required by each electrical device 31 can be reliably established through the circuit element 36, ensuring that the power distribution device 30 can achieve the required function; and the assembly steps can be reduced, the connection convenience and connection reliability between the circuit element 36 and each electrical device 31 can be improved, and the assembly convenience and assembly efficiency of the power distribution device 30 can be improved.

[0187] See also Fig. 9 , Fig.10 In some embodiments of the present application, the gap between the electrical device 31 and the electrical device 31 disposed adjacent thereto is a second gap 316. The electrical device 31 is provided with a first connector 317. The first connector 317 includes a first connector 3171 for detachably connecting to the circuit element 36. The first connector 3171 is located outside each second gap 316 of the corresponding electrical device 31.

[0188] It should be noted that the electrical components 31 can be arranged flexibly. For any electrical component 31, the gap between it and the electrical component 31 disposed adjacent thereto can be used as the second gap 316. Of course, for any electrical component 31, when there are at least two electrical components 31 disposed adjacent thereto distributed around it, it can have at least two second gaps 316. Among them, the sizes of the second gaps 316 of the same electrical component 31 can be set the same or different, and the sizes of the second gaps 316 of different electrical components 31 can be set the same or different.

[0189] It should also be noted that the electrical device 31 is provided with at least one first connector 317, and the first connector 317 is used to be electrically connected to the circuit element 36. One end of the first connector 317 is mechanically and electrically connected to the electrical device 31, and the other end of the first connector 317 is provided with a first connecting portion 3171. The first connecting portion 3171 is used to be detachably mechanically and electrically connected to the circuit element 36. Among them, the first connecting portion 3171 can be detachably mechanically and electrically connected to the circuit element 36 by, but not limited to, plugging, snapping, elastic abutment, etc.

[0190] The first connection portion 3171 is located outside each second gap 316 of the corresponding electrical device 31, that is, the first connection portion 3171 and each second gap 316 of the corresponding electrical device 31 are spatially staggered, the first connection portion 3171 does not occupy the space of each second gap 316 of the electrical device 31, and the first connection portion 3171 is located outside each second gap 316 of the corresponding electrical device 31. Based on this, on one hand, by arranging the first connection portion 3171 outside each second gap 316 of the corresponding electrical device 31, it is convenient to perform the connection operation of the first connection portion 3171 in the space outside each second gap 316 of the corresponding electrical device 31, thereby ensuring and improving the convenience of connecting and disconnecting the first connection portion 3171. On the other hand, since there is no need to set the first connecting portion 3171 in each second gap 316 of the electrical device 31, nor is there any need to provide a connection operation space for the first connecting portion 3171, the size of each second gap 316 of the electrical device 31 can be compressed as needed, which can help to compress the gap between the electrical device 31 and the electrical device 31 arranged adjacent to it, thereby facilitating the compactness of the overall layout of each electrical device 31.

[0191] By adopting the above scheme, when the gap between the electrical device 31 and the electrical device 31 disposed adjacent thereto is defined as the second gap 316, by disposing the first connection part 3171 outside each second gap 316 of the corresponding electrical device 31, on the one hand, it is convenient to perform the connection operation of the first connection part 3171 in the space outside each second gap 316 of the corresponding electrical device 31, thereby ensuring and improving the convenience of connecting and disconnecting the first connection part 3171. On the other hand, it is possible to make it possible that each second gap 316 of the electrical device 31 does not need to provide a space for accommodating the first connection part 3171, nor does it need to provide a connection operation space for the first connection part 3171, thereby facilitating the compression of the gap between the electrical device 31 and the electrical device 31 disposed adjacent thereto as required, which is conducive to compacting the overall layout of each electrical device 31, thereby facilitating the formation of an integrated, compact, and miniaturized power distribution device 30.

[0192] See also Fig. 9 , Fig.10 In some embodiments of the present application, the circuit element 36 includes a connector 361 and a second connector 362. The connector 361 is embedded in the cover 35, and the connector port 3611 of the connector 361 is exposed outside the cover 35. The second connector 362 includes a conductive connecting portion 3622 and a second connecting portion 3621. One end of the conductive connecting portion 3622 is connected to the connector 361, and the other end of the conductive connecting portion 3622 is connected to the second connecting portion 3621. The second connecting portion 3621 is bent toward the corresponding electrical device 31, and is used for detachable connection with the corresponding electrical device 31.

[0193] It should be noted that the connector 361 is used to connect to the battery unit 10 (such as Figure 3 At least a portion of the connector 361 is embedded in the cover 35, so that the installation position and installation state of the connector 361 relative to the cover 35 are stable and firm. The connector 361 has a socket 3611 exposed outside the cover 35, so that the connection terminals of components such as the battery unit 10 can be electrically connected to the connector 361 by being plugged into the socket 3611.

[0194] In some embodiments, the power distribution device 30 may be provided with two connectors 361, one of which is used for high-voltage sampling, and the other connector 361 is used for low-voltage control. Of course, in other embodiments, the power distribution device 30 may be provided with only one connector 361, which integrates the high-voltage sampling and low-voltage control functions. Of course, in other embodiments, the power distribution device 30 may also be provided with three or more connectors 361, and the functions of each connector 361 may be the same or different.

[0195] It should also be noted that, according to the number and position of the electrical devices 31 to be connected to the connector 361, the connector 361 can be connected to one or at least two second connectors 362. The second connector 362 includes a conductive connecting portion 3622, one end of which is electrically connected to the connector 361, and the other end of which is extended toward the electrical device 31 to be connected. The extension path of the conductive connecting portion 3622 can be a straight line or a curve.

[0196] At one end of the conductive connection part 3622 close to the corresponding electrical device 31, the second connection member 362 can be bent to form a second connection part 3621. The conductive connection part 3622 and the corresponding second connection part 3621 can be connected in one piece or in a separate piece. The second connection part 3621 is bent toward the corresponding electrical device 31, and is used for detachable mechanical and electrical connection with the first connection part 3171 of the corresponding electrical device 31. The second connection part 3621 can be detachably mechanically and electrically connected with the corresponding first connection part 3171 by, but not limited to, plugging, snapping, elastic abutment, etc.

[0197] By adopting the above scheme, when each electrical device 31 is installed in the power distribution device 30, the conductive connection part 3622 of the second connector 362 can be connected to the connector 361, and the second connection part 3621 of the second connector 362 can be detachably connected to the first connection part 3171 of the corresponding electrical device 31, so as to conveniently, quickly and reliably realize the electrical connection between the connector 361 and the corresponding electrical device 31. On this basis, the socket 3611 of the connector 361 can be exposed outside the power distribution device 30, so as to realize the electrical connection with components such as the battery cell 10 through the socket 3611. In this way, on the basis of integrating and protecting the connector 361, each electrical device 31 and other components in the power distribution device 30, it is convenient to realize the external connection of components such as the battery cell 10 through the connector 361, so that each electrical device 31 and the connector 361 can be conveniently assembled to realize the functions of high-voltage sampling, low-voltage control and the like for the external components such as the battery cell 10.

[0198] See also Fig. 9 , Fig.10 In some embodiments of the present application, the conductive connection portion 3622 includes at least one of a conductive sheet, an FPC (Flexible Printed Circuit board), and a PCB (Printed Circuit Board).

[0199] It should be noted that the conductive connection portion 3622 refers to the portion of the second connection member 362 connected between the connector 361 and the second connection portion 3621 thereof. The conductive connection portion 3622 may be, but is not limited to, a conductive sheet, an FPC, a PCB, and the like.

[0200] By adopting the above scheme, the second connector 362 can replace the wiring harness through the conductive connecting part 3622 to achieve the connection between the connector 361 and its second connecting part 3621, thereby reducing the setting of the wiring harness, reducing the problems of wiring harness interference and wiring harness wear, ensuring and improving the structural reliability of the connector 361 and the second connector 362, and ensuring and improving the reliability and performance of the distribution device 30.

[0201] See also Fig. 9 , Fig.10 In some embodiments of the present application, the conductive connecting portion 3622 is embedded in the cover body 35 .

[0202] It should be noted that at least a portion of the conductive connection portion 3622 of the second connection member 362 is embedded in the cover body 35 , so that the installation position and installation state of the second connection member 362 relative to the cover body 35 are stable and firm.

[0203] By adopting the above solution, the cover 35 can form a better protection effect on the part where the conductive connection part 3622 is embedded, thereby reducing the risk of interference, wear, damage, etc. of the conductive connection part 3622, and extending the service life of the conductive connection part 3622 and the circuit element 36. In addition, since the conductive connection part 3622 is embedded in the cover 35, the installation stability and installation accuracy of the circuit element 36 relative to the cover 35 can be guaranteed and improved. Based on this, when the cover 35 is assembled to the base 32 and the electrical connection between the circuit element 36 and each electrical component 31 is completed at the same time, the alignment accuracy between the circuit element 36 and each electrical component 31 can be effectively improved, thereby improving the connection convenience and connection reliability between the circuit element 36 and each electrical component 31.

[0204] See also Figure 4 , Fig. 9 , Fig.10 In some embodiments of the present application, the cover 35, the connector 361 and the conductive connecting portion 3622 are an integrated structure.

[0205] It should be noted that, based on the settings of "connector 361 embedded in the cover body 35" and "conductive connecting part 3622 embedded in the cover body 35", the cover body 35, connector 361 and conductive connecting part 3622 can form an integrated structure through but not limited to one-piece molding processes such as one-piece injection molding and 3D printing.

[0206] By adopting the above scheme, the cover body 35 and the connector 361 and the conductive connecting part 3622 embedded in the cover body 35 can form an integrated structure. Based on this, the connection reliability, connection tightness, connection stability and connection strength between the cover body 35 and the connector 361 and the conductive connecting part 3622 can be effectively enhanced, the comprehensive structural strength of the cover body 35 and the connector 361 and the conductive connecting part 3622 can be effectively enhanced, the protective effect of the cover body 35 on the connector 361 and the conductive connecting part 3622 can be effectively enhanced, the risk of wear and damage of the connector 361 can be reduced, and the risk of interference and wear of the conductive connecting part 3622 can be reduced.

[0207] By adopting the above scheme, the assembly process between the cover body 35 and the connector 361, and between the cover body 35 and the conductive connecting part 3622 can be simplified, and it is also convenient to complete the precise alignment between the second connecting part 3621 of the second connecting member 362 and the first connecting part 3171 of the corresponding electrical device 31 when assembling the cover body 35, and complete the electrical connection between the second connecting part 3621 and the corresponding first connecting part 3171. That is, the connection process between the second connecting member 362 and the electrical device 31 can be simplified, thereby effectively reducing the assembly steps, effectively ensuring and improving the connection reliability between the connector 361 and the electrical device 31, and effectively improving the assembly efficiency and structural reliability of the distribution device 30.

[0208] See also Figure 3 , Fig. 9 , Fig.11 In some embodiments of the present application, the power distribution device 30 includes an electrical device 31 and an insulating heat-conducting member 37. The electrical device 31 includes a relay 312. The electrical device 31 is mounted on a base 32. One side of the insulating heat-conducting member 37 is connected to at least a portion of the electrical device 31, and the other side of the insulating heat-conducting member 37 is used to connect to the heat exchange member 40. The insulating heat-conducting member 37 is used to transfer heat from the electrical device 31 to the heat exchange member 40.

[0209] It should be noted that the electrical device 31 may refer to any electrical component in the power distribution device 30. The electrical device 31 may include a relay 312, a current sensor 313, a fuse, an insurance 314, a pre-charge resistor 315, etc. Among them, the relay 312 may include a main positive relay 3121, a main negative relay 3122, a pre-charge relay 3123, etc. The current sensor 313 may include a shunt 3131, a Hall current sensor 3132, etc. In some embodiments, the insurance 314 may be a fuse.

[0210] The electrical device 31 can be installed on the base 32. Based on this, the electrical device 31 can be installed and protected by the base 32, and the installation position and installation state of the electrical device 31 relative to the base 32 can be made stable and firm. As a result, it is beneficial to ensure and extend the service life of the electrical device 31. It is convenient for each electrical device 31 to stabilize the position and state with each other, and to establish the required electrical connection relationship with each other. And it is also convenient for the electrical device 31 to accurately and stably align with the insulating thermal conductive member 37 when the installation position and installation state of the insulating thermal conductive member 37 relative to the base 32 are stable, so that the electrical device 31 and the insulating thermal conductive member 37 can accurately and reliably establish an insulating thermal conductive connection relationship.

[0211] It should also be noted that the heat exchanger 40 may refer to an external component used for heat exchange with components such as the electrical component 31. The heat exchanger 40 has good thermal conductivity, and can quickly and reliably exchange heat with components such as the electrical component 31 and the insulating heat conductive component 37, and quickly conduct heat. For example, the heat exchanger 40 may be the thermal management component 41, or the box 20 of the battery 1, or the body of the vehicle, and so on.

[0212] It should also be noted that the insulating heat conductive member 37 is at least a member for transferring heat from the electrical device 31 to the heat exchanger 40. When the power distribution device 30 is disposed on the heat exchanger 40, the insulating heat conductive member 37 will be located between the electrical device 31 and the heat exchanger 40.

[0213] The insulating heat-conducting member 37 includes a heat-conducting material, has heat-conducting properties, and can play a heat-conducting role, that is, play a heat exchange and heat conduction role. One side of the insulating heat-conducting member 37 is heat-conductingly connected to at least a portion of the electrical device 31, and the other side of the insulating heat-conducting member 37 is heat-conductingly connected to the heat exchange member 40. Based on this, it is convenient for the electrical device 31 to quickly and reliably exchange heat with the heat exchange member 40 via the insulating heat-conducting member 37, and it is especially convenient for the insulating heat-conducting member 37 to quickly conduct the heat generated by the electrical device 31 to the heat exchange member 40. As a result, the heat dissipation performance and heat dissipation efficiency of the power distribution device 30 to the electrical device 31 can be effectively guaranteed and improved, the risk of thermal failure of the electrical device 31 can be reduced, and the service life of the electrical device 31 and the power distribution device 30 can be guaranteed and extended.

[0214] The insulating heat conductive member 37 also includes an insulating material, has insulating properties, and can play an insulating role. Based on the insulating properties of the insulating heat conductive member 37, it can be ensured that the electrical device 31 and the heat exchanger 40 can be insulated via the insulating heat conductive member 37, and a short circuit between the electrical device 31, the insulating heat conductive member 37, and the heat exchanger 40 can be avoided, thereby reducing the risk of high-voltage short circuit ignition between the electrical device 31, the insulating heat conductive member 37, and the heat exchanger 40.

[0215] The insulating heat-conducting member 37 may be a single-layer structure or a multi-layer structure.

[0216] The shape of the insulating heat-conducting member 37 can be variously designed, such as a cuboid, a cylinder, etc.

[0217] Among them, on the basis of ensuring the thermal conductivity and insulation between the insulating thermal conductive part 37 and the electrical device 31, the connection method between the insulating thermal conductive part 37 and the electrical device 31 can be flexibly designed, for example, abutment, bonding, bolt locking connection, etc. can be adopted.

[0218] Among them, on the basis of ensuring the thermal conductivity and insulation between the insulating heat conductive part 37 and the heat exchanger 40, the connection method between the insulating heat conductive part 37 and the heat exchanger 40 can be flexibly designed, for example, abutment, bonding, bolt locking connection, etc. can be adopted.

[0219] By adopting the above solution, the power distribution device 30 can be insulated and thermally connected to the electrical device 31 through the insulating thermal conductive member 37, and can be insulated and thermally connected to the external heat exchanger 40 through the insulating thermal conductive member 37. Based on this, on the one hand, the insulation performance of the insulating thermal conductive member 37 can ensure that the electrical device 31 and the heat exchanger 40 can be insulated through the insulating thermal conductive member 37, so that a short circuit between the electrical device 31, the insulating thermal conductive member 37 and the heat exchanger 40 can be basically avoided, and the risk of high-voltage short circuit ignition between the electrical device 31, the insulating thermal conductive member 37 and the heat exchanger 40 can be effectively reduced. On the other hand, it is convenient to exchange heat and conduct heat between the electrical device 31 and the heat exchanger 40 through the insulating heat conductive part 37, and especially convenient to conduct the heat generated by the electrical device 31 to the heat exchanger 40 through the insulating heat conductive part 37, so as to diffuse and conduct the heat generated by the electrical device 31 to the outside of the distribution device 30. As a result, the heat dissipation performance and heat dissipation efficiency of the distribution device 30 to the electrical device 31 can be effectively guaranteed and improved, the risk of thermal failure of the electrical device 31 can be effectively reduced, and the service life of the electrical device 31 and the distribution device 30 can be effectively guaranteed and extended.

[0220] See also Fig.11 , Fig.12 , Fig.13 In some embodiments of the present application, the electrical device 31 includes a sheet-shaped conductive structure 311. The conductive structure 311 has a heat-conducting surface 3111, and the heat-conducting surface 3111 is connected to the insulating heat-conducting member 37.

[0221] It should be noted that the conductive structure 311 is a component of the electrical device 31 for achieving electrical connection. The conductive structure 311 may be in a sheet shape, and the conductive structure 311 may include a bar, a bus bar, a conductive sheet, etc. Among them, the bar may include a copper bar, an aluminum bar, etc.

[0222] The conductive structure 311 has a heat-conducting surface 3111, and the heat-conducting surface 3111 can be heat-conductingly connected to the insulating heat-conducting member 37 in a close-fitting manner. In this way, the conductive structure 311 of the electrical device 31, which generates more heat during operation, can be directly heat-conductingly connected to the insulating heat-conducting member 37 via the heat-conducting surface 3111. Based on this, the heat-conducting contact area between the conductive structure 311 and the insulating heat-conducting member 37 can be guaranteed and increased, so that the large amount of heat generated by the conductive structure 311 can be reliably and effectively conducted to the heat exchange member 40 (such as the insulating heat-conducting member 37) through the insulating heat-conducting member 37. Figure 3 As shown), the heat dissipation performance and heat dissipation efficiency of the power distribution device 30 to the electrical components 31 can be effectively guaranteed and improved, the risk of thermal failure of the electrical components 31 can be effectively reduced, and the service life of the electrical components 31 and the power distribution device 30 can be effectively guaranteed and extended.

[0223] Furthermore, based on the insulating property of the insulating heat conductive member 37, the conductive structure 311 can be insulated from the insulating heat conductive member 37. In this way, a short circuit between the conductive structure 311 and the insulating heat conductive member 37 can be basically avoided, thereby reducing the risk of a high voltage short circuit ignition between the conductive structure 311 and the insulating heat conductive member 37.

[0224] By adopting the above scheme, by connecting the heat-conducting surface 3111 of the conductive structure 311 of the electrical device 31 with the insulating heat-conducting part 37, on the one hand, based on the insulating characteristics of the insulating heat-conducting part 37, the conductive structure 311 and the insulating heat-conducting part 37 can be insulated from each other, thereby basically avoiding a short circuit between the conductive structure 311 and the insulating heat-conducting part 37, and reducing the risk of high-voltage short circuit ignition between the conductive structure 311 and the insulating heat-conducting part 37. On the other hand, the conductive structure 311 of the electrical device 31, which generates more heat during operation, can be directly and closely connected to the insulating heat conductive part 37 via the heat conductive surface 3111. Based on this, the thermal contact area between the conductive structure 311 and the insulating heat conductive part 37 can be guaranteed and increased, so that the large amount of heat generated by the conductive structure 311 can be reliably and effectively transferred to the heat exchanger 40 through the insulating heat conductive part 37. As a result, the heat dissipation performance and heat dissipation efficiency of the power distribution device 30 to the electrical device 31 can be effectively guaranteed and improved, the risk of thermal failure of the electrical device 31 can be effectively reduced, and the service life of the electrical device 31 and the power distribution device 30 can be effectively guaranteed and extended.

[0225] Of course, in other embodiments, the electrical device 31 can be insulated and thermally connected to the insulating thermal conductive member 37 through the non-sheet conductive structure 311; or, the electrical device 31 can be insulated and thermally connected to the insulating thermal conductive member 37 through the portion other than the conductive structure 311.

[0226] See also Fig.11 , Fig.12 , Fig.13In some embodiments of the present application, the conductive structure 311 includes a first conductive portion 3112, a second conductive portion 3113 and a third conductive portion 3114. The second conductive portion 3113 is laid on the side of the base 32 facing the insulating heat-conducting member 37, and a heat-conducting surface 3111 is provided on the side of the second conductive portion 3113 facing the insulating heat-conducting member 37. The first conductive portion 3112 and the third conductive portion 3114 are respectively connected to different sides of the second conductive portion 3113, and are both bent toward the side close to the base 32. The first conductive portion 3112 is connected to the corresponding electrical component 31. The third conductive portion 3114 is used to connect to the electrical component.

[0227] It should be noted that the electrical component refers to a component that is electrically connected to the electrical device 31, and the electrical component may be another electrical device 31, or a circuit (not limited to a circuit board), an external bus, etc. The electrical components electrically connected to different electrical devices 31 may be the same or different.

[0228] The conductive structure 311 is a component for electrically connecting the corresponding electrical device 31 to the corresponding electrical component. The corresponding electrical device 31 refers to the electrical device 31 that includes the conductive structure 311 and is electrically connected to the conductive structure 311. The corresponding electrical component refers to another component that the conductive structure 311 is electrically connected to, in addition to the corresponding electrical device 31. In other words, the corresponding electrical device 31 and the corresponding electrical component are two components that the conductive structure 311 is connected to.

[0229] It should also be noted that the conductive structure 311 is a sheet structure. The conductive structure 311 includes a first conductive part 3112, a second conductive part 3113 and a third conductive part 3114 connected in sequence. Among them, the first conductive part 3112 is connected to the corresponding electrical device 31, and is extended toward the side close to the insulating heat-conducting member 37. The third conductive part 3114 is connected to the corresponding electrical component, and is extended toward the side close to the insulating heat-conducting member 37. The second conductive part 3113 is bent and connected to one end of the first conductive part 3112 close to the insulating heat-conducting member 37, and one end of the third conductive part 3114 close to the insulating heat-conducting member 37. That is, the second conductive part 3113 is connected from one end of the first conductive part 3112 close to the insulating heat-conducting member 37 to one end of the third conductive part 3114 close to the insulating heat-conducting member 37, and the second conductive part 3113 is arranged at an angle with the first conductive part 3112, and the second conductive part 3113 is arranged at an angle with the third conductive part 3114.

[0230] According to the layout of the corresponding electrical device 31 and the corresponding electrical component and the shape of the second conductive portion 3113, the first conductive portion 3112 and the third conductive portion 3114 can be connected to different sides of the second conductive portion 3113. That is, the first conductive portion 3112 and the third conductive portion 3114 can be connected to adjacent sides of the second conductive portion 3113, or to opposite sides of the second conductive portion 3113, etc. That is, the overall shape of the conductive structure 311 can be flexibly designed as needed.

[0231] By sequentially bending and connecting the first conductive portion 3112 , the second conductive portion 3113 , and the third conductive portion 3114 , the conductive structure 311 can conveniently and reliably electrically connect the corresponding electrical device 31 to the corresponding electrical component.

[0232] It should also be noted that the second conductive portion 3113 is laid on the side of the base 32 facing the insulating heat conductive member 37. That is, the second conductive portion 3113 is arranged on the side of the base 32 facing the insulating heat conductive member 37 in a posture of "basically parallel to the side of the base 32 facing the insulating heat conductive member 37". In this case, on the side of the second conductive portion 3113 facing the insulating heat conductive member 37, the second conductive portion 3113 can form the above-mentioned thermal conductive surface 3111, which is used for thermally connecting with the insulating heat conductive member 37 in a close fit. Based on this, the conductive structure 311 can be directly insulated and thermally connected with the insulating heat conductive member 37 via the thermal conductive surface 3111 of the second conductive portion 3113, thereby reducing the blocking effect of the base 32 on the thermal path between the conductive structure 311 and the insulating heat conductive member 37, and can ensure and increase the thermal contact area between the conductive structure 311 and the insulating heat conductive member 37.

[0233] By adopting the above solution, the corresponding electrical device 31 can be conveniently and reliably electrically connected to the corresponding electrical component through the conductive structure 311, especially through the first conductive part 3112, the second conductive part 3113 and the third conductive part 3114 that are bent and connected in sequence. On this basis, the second conductive part 3113 can be laid on the side of the base 32 facing the insulating thermal conductive part 37, and a thermal conductive surface 3111 is provided on the side of the second conductive part 3113 facing the insulating thermal conductive part 37, so that the conductive structure 311 can be directly insulated and thermally connected to the insulating thermal conductive part 37 via the thermal conductive surface 3111 of the second conductive part 3113. Based on this, the blocking effect of the base 32 on the thermal conductive path between the conductive structure 311 and the insulating thermal conductive part 37 can be reduced, and the thermal conductive contact area between the conductive structure 311 and the insulating thermal conductive part 37 can be guaranteed and increased, thereby ensuring and improving the thermal conductive effect between the conductive structure 311 and the insulating thermal conductive part 37, and facilitating the reliable and effective rapid discharge of a large amount of heat generated by the conductive structure 311 through the insulating thermal conductive part 37, thereby ensuring and improving the heat dissipation performance and heat dissipation efficiency of the distribution device 30 to the electrical device 31.

[0234] See also Fig.11 , Fig.12 , Fig.13 In some embodiments of the present application, the conductive structure 311 of the relay 312 is disposed outside the accommodating cavity 321 , and the second conductive portion 3113 of the relay 312 is disposed on the outer side of the accommodating cavity 321 close to the insulating heat conductive member 37 .

[0235] It should be noted that the conductive structure 311 of the relay 312, i.e., the conductive structure 311 used to electrically connect the relay 312 to other electrical components, is disposed outside the accommodating cavity 321 without occupying additional space inside the accommodating cavity 321. In particular, the second conductive portion 3113 of the conductive structure 311 of the relay 312 is disposed outside the accommodating cavity 321 near the insulating heat conductive member 37.

[0236] By adopting the above solution, the conductive structure 311 of the relay 312 can be arranged outside the accommodating cavity 321, so that the conductive structure 311 can electrically connect the relay 312 to other electrical components without occupying additional space inside the accommodating cavity 321. Based on this, the design margin and space waste between the base 32 and the relay 312 can be reduced, and the assembly and matching of the base 32, the relay 312, the conductive structure 311 of the relay 312, and the electrical components connected to the conductive structure 311 of the relay 312 can be facilitated, and the conductive structure 311 can conveniently and reliably electrically connect the relay 312 to other electrical components. On this basis, the second conductive part 3113 of the relay 312 can be arranged on the outside of the accommodating cavity 321 close to the insulating thermal conductive part 37, so that the second conductive part 3113 of the relay 312 can be exposed on the outside of the accommodating cavity 321 close to the insulating thermal conductive part 37, so as to facilitate the direct insulated and thermally conductive connection between the conductive structure 311 of the relay 312 and the insulating thermal conductive part 37 via the second conductive part 3113. As a result, the blocking effect of the wall of the accommodating cavity 321 on the thermal path between the conductive structure 311 of the relay 312 and the insulating thermal conductive part 37 can be reduced, and the thermal contact area between the conductive structure 311 of the relay 312 and the insulating thermal conductive part 37 can be increased, so as to improve the thermal conductivity between the relay 312 and the insulating thermal conductive part 37. It is convenient to reliably and effectively remove the heat generated by the relay 312 and its conductive structure 311 quickly through the insulating thermal conductive part 37, which can improve the heat dissipation performance and heat dissipation efficiency of the distribution device 30 to the relay 312, and reduce the risk of thermal failure of the relay 312.

[0237] See also Fig. 9 , Fig.11 , Fig.13In some embodiments of the present application, the power distribution device 30 includes a packaging seat 38, which is connected to a side of the base 32 close to the insulating heat conductive member 37. The insulating heat conductive member 37 is installed on the packaging seat 38. The surface of the insulating heat conductive member 37 facing away from the electrical device 31 is exposed on the packaging seat 38.

[0238] It should be noted that the power distribution device 30 is provided on the heat exchange element 40 (such as Figure 3 When the power distribution device 30 is mounted on the heat exchange member 40, the packaging seat 38 is mainly arranged on the heat exchange member 40. The packaging seat 38 is a component used to at least install and fix the insulating heat conductive member 37.

[0239] The electrical device 31 is located on the side of the packaging seat 38 away from the heat exchanger 40. In some embodiments, the electrical device 31 can be mounted on the base 32 and fixed via the connection between the base 32 and the packaging seat 38, and the mounting position and mounting state relative to the packaging seat 38 are basically stable.

[0240] The insulating heat conductive member 37 is mounted on the packaging seat 38. The mounting method between the insulating heat conductive member 37 and the packaging seat 38 can be flexibly designed. The side of the insulating heat conductive member 37 facing the electrical device 31 is insulated and thermally connected to the electrical device 31. The surface of the insulating heat conductive member 37 facing away from the electrical device 31 is exposed on the side of the packaging seat 38 facing the heat exchanger 40, and is thermally connected to the heat exchanger 40.

[0241] By adopting the above scheme, the insulating heat conductive member 37 can be installed and fixed through the packaging seat 38, so that the installation position and installation state of the insulating heat conductive member 37 relative to the packaging seat 38 are stable and firm, so that the insulating heat conductive member 37 and the electrical device 31 can be accurately and stably aligned, and the insulating heat conductive member 37 and the electrical device 31 can be accurately and reliably established. On this basis, since the insulating heat conductive member 37 is insulated and thermally connected to the electrical device 31 on the side facing the electrical device 31, and the surface of the insulating heat conductive member 37 away from the electrical device 31 is exposed to the packaging seat 38 and is thermally connected to the heat exchanger 40, it is convenient for the insulating heat conductive member 37 to be directly insulated and thermally connected between the electrical device 31 and the heat exchanger 40, thereby reducing the blocking effect of the packaging seat 38 on the heat conduction path of the insulating heat conductive member 37, and ensuring and improving the heat conduction effect of the insulating heat conductive member 37 between the electrical device 31 and the heat exchanger 40.

[0242] Of course, in other embodiments, the power distribution device 30 may not include the packaging seat 38 , but the insulating heat conductive member 37 may be installed and fixed on other components of the power distribution device 30 .

[0243] See also Fig. 9 , Fig.11 , Fig.13 In some embodiments of the present application, the insulating heat conductive member 37 is embedded in the packaging seat 38 .

[0244] It should be noted that part or all of the insulating heat conductive member 37 is embedded in the packaging seat 38. The side of the insulating heat conductive member 37 facing the electrical device 31 is insulated and thermally connected to the electrical device 31. The surface of the insulating heat conductive member 37 facing away from the electrical device 31 is exposed on the side of the packaging seat 38 facing the heat exchanger 40, and is thermally connected to the heat exchanger 40.

[0245] By adopting the above scheme, on the basis of the previous embodiment, at least a part of the insulating heat conductive member 37 can be embedded in the packaging seat 38. Based on this, on the one hand, at least a part of the insulating heat conductive member 37 can share a space with the packaging seat 38, thereby saving the space occupied by both the insulating heat conductive member 37 and the packaging seat 38. On the other hand, it is convenient for the insulating heat conductive member 37 to pass through the packaging seat 38 and directly connect the electrical device 31 and the heat exchanger 40 in an insulated and heat-conductive manner, thereby reducing the blocking effect of the packaging seat 38 on the heat conduction path of the insulating heat conductive member 37, which can help to ensure and improve the heat conduction effect of the insulating heat conductive member 37 between the electrical device 31 and the heat exchanger 40.

[0246] See also Fig. 9 , Fig.11 , Fig.13 In some embodiments of the present application, a first limiting structure 381 is provided on a side of the packaging seat 38 facing the electrical device 31 , for limiting the portion of the electrical device 31 connected to the insulating heat conductive member 37 .

[0247] It should be noted that the side of the package base 38 facing the electrical device 31 is provided with a first limiting structure 381. The structure of the first limiting structure 381 can be designed in a variety of ways, for example, the first limiting structure 381 can be a hole structure, a groove structure, a frame structure, etc.

[0248] The part of the electrical device 31 used for thermal connection with the insulating heat conductive member 37 (such as the second conductive portion 3113 mentioned above) can be limitedly installed in the first limiting structure 381, and is insulated and thermally connected to the surface of the insulating heat conductive member 37 at the first limiting structure 381. In the case where the part of the electrical device 31 used for thermal connection with the insulating heat conductive member 37 can be limited in the first limiting structure 381, the shape of the part of the electrical device 31 and the shape of the first limiting structure 381 can be the same or different, and the fit between the part of the electrical device 31 and the first limiting structure 381 can be a clearance fit, a transition fit, or an interference fit.

[0249] By adopting the above scheme, the first limiting structure 381 can be set on the packaging seat 38, so that the part of the electrical device 31 used for thermal connection with the insulating heat conductive member 37 can be limited and installed in the first limiting structure 381, and the surface of the insulating heat conductive member 37 corresponding to the first limiting structure 381 can be insulated and thermally connected. Based on this, the first limiting structure 381 of the packaging seat 38 can be used to limit and position the part of the electrical device 31 used for thermal connection with the insulating heat conductive member 37, so that it is convenient to quickly and accurately realize the alignment of each electrical device 31 and the packaging seat 38, and it can promote each electrical device 31 to accurately align with the insulating heat conductive member 37 installed in the packaging seat 38, which can facilitate the stabilization of the relative position and relative state between the electrical device 31 and the insulating heat conductive member 37, so that the electrical device 31 and the insulating heat conductive member 37 can be accurately and reliably insulated and thermally connected, and the thermal conduction effect between the electrical device 31 and the insulating heat conductive member 37 can be guaranteed.

[0250] Of course, in other embodiments, the packaging seat 38 may not be provided with the first limiting structure 381, and the surface of the insulating thermal conductive member 37 facing the electrical device 31 may be exposed at the corresponding side of the packaging seat 38 and thermally connected to at least part of the electrical device 31.

[0251] See also Fig. 9 , Fig.11 , Fig.13 In some embodiments of the present application, a second limiting structure 382 is provided on the side of the packaging seat 38 facing away from the electrical device 31 for limiting the installation of the insulating heat conductive member 37.

[0252] It should be noted that the side of the packaging seat 38 facing away from the electrical device 31 (i.e., the side of the packaging seat 38 facing the heat exchanger 40) is provided with a second limiting structure 382. The structure of the second limiting structure 382 can be designed in a variety of ways, for example, the second limiting structure 382 can be a groove structure, a hole structure, a frame structure, etc.

[0253] The insulating heat conductive member 37 is installed in a limited position in the second limiting structure 382. In the case where the insulating heat conductive member 37 is installed in a limited position in the second limiting structure 382, ​​the shape of the second limiting structure 382 and the shape of the insulating heat conductive member 37 can be the same or different, and the fit between the insulating heat conductive member 37 and the second limiting structure 382 can be a clearance fit, a transition fit, or an interference fit.

[0254] By adopting the above solution, a second limiting structure 382 can be provided on the side of the packaging seat 38 away from the electrical device 31, so as to facilitate the insulating heat conductive member 37 to be limitedly installed in the second limiting structure 382. Based on this, the insulating heat conductive member 37 can be limitedly accommodated by the second limiting structure 382 of the packaging seat 38, so that the insulating heat conductive member 37 and the packaging seat 38 can be assembled quickly and accurately, and the insulating heat conductive member 37 can be accurately aligned with the electrical device 31 to be connected with it by heat conduction, so that the insulating heat conductive member 37 can accurately, stably and reliably play the role of heat conduction.

[0255] See also Figures 4 to 13 Based on the above embodiments, the present application provides a specific example of a power distribution device 30.

[0256] The power distribution device 30 includes a base 32 and a relay 312. Two accommodating cavities 321 are provided on one side of the base 32. At least two relays 312 are provided, and the at least two relays 312 include a main positive relay 3121 and a main negative relay 3122. The main positive relay 3121 is fixedly installed in one of the accommodating cavities 321, the main positive relay 3121 is a shellless relay, the outer wall of the switch unit 3124 of the main positive relay 3121 is exposed in the accommodating cavity 321, and the wall of the accommodating cavity 321 is connected to the main positive relay 3121, so that the main positive relay 3121 is fixed to the accommodating cavity 321. The main negative relay 3122 is fixedly installed in the other accommodating cavity 321, the main negative relay 3122 is a shellless relay, the outer walls of the switch unit 3124 of the main negative relay 3122 are exposed in the accommodating cavity 321, and the wall of the accommodating cavity 321 is connected to the main negative relay 3122, so that the main negative relay 3122 is fixed to the accommodating cavity 321. Based on this, on the basis of accommodating, limiting, fixing and protecting the main positive relay 3121 and the main negative relay 3122 through the base 32, the outer shell structure of the main positive relay 3121 and the main negative relay 3122 can be omitted, thereby making the layout of the distribution device 30 compact, reducing the design margin, space waste and occupied space of the distribution device 30, reducing the weight of the distribution device 30, and facilitating the formation of an integrated, miniaturized, lightweight and simplified distribution device 30, and reducing the production cost of the distribution device 30.

[0257] The inner wall 3211 of the accommodating cavity 321 includes a bottom wall 3212, a top wall 3213, a first side wall 3214, a second side wall 3215 and a third side wall 3216. The bottom wall 3212 is used to support the relay 312, and the top wall 3213 is arranged opposite to the bottom wall 3212. The first side wall 3214 is arranged opposite to the second side wall 3215. The third side wall 3216 is arranged opposite to the opening 3217 of the accommodating cavity 321. Among them, the bottom wall 3212, the top wall 3213, the first side wall 3214, the second side wall 3215 and the third side wall 3216 are all provided with a protruding structure 323. The protruding structure 323 arranged on the bottom wall 3212, the top wall 3213, the first side wall 3214 and the second side wall 3215 is a first protrusion 3231, and the first protrusion 3231 is extended in a direction away from the opening 3217. The protruding structure 323 provided on the third side wall 3216 is a second protrusion 3232, and each second protrusion 3232 is cross-connected. Based on this, during the assembly of the relay 312 in the receiving chamber 321, the bottom wall 3212, the top wall 3213, the first side wall 3214 and the second side wall 3215 can all pass through the first protrusion 3231, follow the disassembly direction of the relay 312 and the receiving chamber 321, reduce the friction with the relay 312, and especially reduce the friction in other directions except the disassembly direction. And the bottom wall 3212, the top wall 3213, the first side wall 3214, the second side wall 3215 and the third side wall 3216 can form a first gap 322 with the relay 312 through the area where the protruding structure 323 is not provided, so as to form an assembly margin through the first gap 322 and provide an assembly space. As a result, it is beneficial to improve the assembly convenience and assembly efficiency between the relay 312 and the receiving chamber 321. When the relay 312 is placed in the accommodating cavity 321, the bottom wall 3212, the top wall 3213, the first side wall 3214, the second side wall 3215 and the third side wall 3216 can all be in contact with the relay 312 through the protruding structure 323 to ensure and enhance the limiting and positioning effect of the relay 312; and a connecting space can be formed through the first gap 322 to fill the structural adhesive, so that the relay 312 can be stably and reliably fixed to the accommodating cavity 321 through the structural adhesive. In this way, the installation stability of the relay 312 in the accommodating cavity 321 can be improved.

[0258] The power distribution device 30 includes two cover parts 33. The cover parts 33 are snap-connected with the inner wall 3211 of the accommodating cavity 321 through the snap 333, so that the two cover parts 33 can block the openings 3217 of the two accommodating cavities 321 one by one. Based on this, the cover parts 33 can cooperate with the base 32 to form an all-round protection for the relay 312 in the accommodating cavity 321, thereby improving the protection effect of the power distribution device 30 on the relay 312 and extending the service life of the relay 312 and the power distribution device 30. The cover parts 33 can reliably prevent the relay 312 from escaping from the opening 3217 of the accommodating cavity 321, especially preventing the relay 312 from escaping from the accommodating cavity 321 due to vibration during operation, thereby ensuring the installation stability and installation reliability of the power distribution device 30 for the relay 312. The cover 33 can reliably prevent external devices from contacting, colliding with, and damaging the relay 312 , thereby extending the service life of the relay 312 and the power distribution device 30 and reducing potential safety hazards of the power distribution device 30 .

[0259] The relay 312 is provided with two contacts 3125, and the relay 312 sets its contacts 3125 toward one side of the opening 3217. Correspondingly, the cover 33 is provided with two through holes 331, and the two through holes 331 expose the two contacts 3125 of the relay 312 one by one. Based on this, the cover 33 can expose the contacts 3125 of the relay 312 through the through holes 331, so that the contacts 3125 of the relay 312 can be connected to the high-voltage circuit and play the role of controlling the on and off of the high-voltage circuit. In addition, since the contacts 3125 of the relay 312 are separated in different through holes 331, it is beneficial to improve the insulation between the two contacts 3125 of the relay 312, thereby reducing the risk of short circuit and reducing the safety hazards of the power distribution device 30.

[0260] A barrier structure 332 is provided on the side of the cover 33 away from the accommodating cavity 321, and the barrier structure 332 is located between the two through holes 331. Based on this, when the two contacts 3125 of the relay 312 pass through the two through holes 331 of the cover 33 one by one, the cover 33 can insulate and separate the two contacts 3125 correspondingly exposed in the two through holes 331 through the barrier structure 332. Thus, the creepage distance between the two contacts 3125 of the relay 312 can be increased through the barrier structure 332, and the insulation between the two contacts 3125 of the relay 312 can be improved, thereby reducing the risk of short circuit and reducing the safety hazard of the power distribution device 30.

[0261] The two accommodating chambers 321 are arranged adjacent to each other, that is, they are arranged close to each other. The base 32 is provided with an insulating structure 324, and the insulating structure 324 is arranged between the two accommodating chambers 321. The insulating structure 324 can insulate and separate the two accommodating chambers 321, especially the main positive relay 3121 and the main negative relay 3122, and especially the contact 3125 of the main positive relay 3121 and the contact 3125 of the main negative relay 3122. Based on this, the insulation between the contact 3125 of the main positive relay 3121 and the contact 3125 of the main negative relay 3122 can be improved, the risk of short circuit can be reduced, and the reliability and safety of the use of the power distribution device 30 can be improved.

[0262] The power distribution device 30 includes a shielding member 34. The shielding member 34 is disposed on the side of the two cover members 33 that is away from the accommodating chamber 321. The shielding member 34 can shield the two cover members 33, as well as the contact 3125 of the main positive relay 3121 and the contact 3125 of the main negative relay 3122. Based on this, the shielding member 34 can be used to protect the two cover members 33, the contact 3125 of the main positive relay 3121 and the contact 3125 of the main negative relay 3122, so as to ensure and extend the service life of the relay 312 and the power distribution device 30. The shielding member 34 can also reliably prevent human hands or external devices from contacting the contact 3125 of the main positive relay 3121 and the contact 3125 of the main negative relay 3122 to conduct electricity, thereby reducing the safety hazards of the power distribution device 30.

[0263] The power distribution device 30 includes at least two electrical components 31. Each electrical component 31 includes a main positive relay 3121, a main negative relay 3122, a pre-charge relay 3123, a shunt 3131, a Hall current sensor 3132, a main fuse 3141 and a pre-charge resistor 315. Each electrical component 31 is mounted on a base 32. Among them, the pre-charge relay 3123 is arranged on the side of the main positive relay 3121 away from the main negative relay 3122, and is arranged close to the main positive relay 3121. The pre-charge resistor 315 is arranged on the side of the pre-charge relay 3123 away from the main positive relay 3121, and is close to the pre-charge relay 3123. The main fuse 3141 is arranged on the side of the main positive relay 3121 away from the main negative relay 3122, and is arranged beside the pre-charge relay 3123 and the pre-charge resistor 315. The main fuse 3141 is arranged close to the main positive relay 3121, the pre-charge relay 3123 and the pre-charge resistor 315. The shunt 3131 and the Hall current sensor 3132 are both current sensors 313. The Hall current sensor 3132 is arranged on the side of the main fuse 3141 away from the main positive relay 3121. The shunt 3131 is arranged on the side of the main negative relay 3122 away from the main positive relay 3121. The main positive relay 3121, the main negative relay 3122, the pre-charge relay 3123, the shunt 3131, the Hall current sensor 3132, the main fuse 3141 and the pre-charge resistor 315 are constructed with corresponding electrical connection relationships according to the circuit schematic diagram of the power distribution device 30. Among them, the circuit schematic diagram of the power distribution device 30 is a technology well known to those skilled in the art and will not be described in detail here. Based on this, the main positive relay 3121, the main negative relay 3122, the pre-charge relay 3123, the shunt 3131, the Hall current sensor 3132, the main fuse 3141 and the pre-charge resistor 315 can achieve compactness and optimized layout, thereby reducing the design margin, space waste and occupied space of the power distribution device 30, and can reduce the size of the power distribution device 30 in the height direction of the base 32 (corresponding to the assembly direction of the cover 35, the base 32 and the packaging seat 38), and can reduce the overall external dimensions of the power distribution device 30, so as to facilitate the formation of an integrated and miniaturized power distribution device 30.

[0264] The power distribution device 30 further includes a cover 35, which is mounted on one side of the base 32. Based on the compact layout of the above-mentioned electrical components 31, the base 32 and the cover 35 can enclose an internal space to accommodate the installation of the pre-charge relay 3123 and the pre-charge resistor 315. A circuit element 36 is provided on one side of the cover 35 facing the electrical components 31. The circuit element 36 can be used to electrically connect with each electrical component 31 to establish the electrical connection relationship required by each electrical component 31, so as to ensure that the power distribution device 30 can achieve the required functions.

[0265] Each electrical device 31 is provided with a first connector 317, and the first connector 317 has a first connecting portion 3171 for detachably electrically connecting to the circuit element 36. For any electrical device 31, the gap between it and the electrical device 31 arranged adjacent to it can be used as the second gap 316, and the first connecting portion 3171 of the first connector 317 arranged therein is located outside each of its second gaps 316. Taking the pre-filling relay 3123 as an example, the main positive relay 3121, the pre-filling resistor 315 and the main fuse 3141 are all arranged adjacent to the pre-filling relay 3123, and the gap between the main positive relay 3121 and the pre-filling relay 3123, the gap between the pre-filling resistor 315 and the pre-filling relay 3123, and the gap between the main fuse 3141 and the pre-filling relay 3123 can all be used as the second gap 316, but the sizes of these second gaps 316 can be set to be the same or different. The first connection part 3171 of the first connection member 317 provided in the pre-filling relay 3123 can be provided outside each second gap 316 of the pre-filling relay 3123, that is, the first connection part 3171 provided in the pre-filling relay 3123 can be provided outside the gap between the main positive relay 3121 and the pre-filling relay 3123, outside the gap between the pre-filling resistor 315 and the pre-filling relay 3123, and outside the gap between the main fuse 3141 and the pre-filling relay 3123. Therefore, in this embodiment, the first connection part 3171 of the pre-filling relay 3123 is provided on the side of the pre-filling relay 3123 facing the cover body 35. By analogy, the first connection parts 3171 of the main positive relay 3121, the main negative relay 3122, the shunt 3131, the Hall current sensor 3132, the main fuse 3141 and the pre-filling resistor 315 can be provided to avoid their respective second gaps 316 as much as possible. Of course, according to the layout design requirements, some electrical devices 31 can set their first connection parts 3171 in their second gaps 316. Based on this, by setting the first connection parts 3171 outside the second gaps 316 of the corresponding electrical devices 31, it is convenient to perform the connection operation of the first connection parts 3171 in the space outside the second gaps 316 of the corresponding electrical devices 31, thereby ensuring and improving the convenience of connecting and disconnecting the first connection parts 3171. In addition, it is also possible to make it possible for each second gap 316 of the electrical device 31 to provide neither a storage space for the first connection part 3171 nor a connection operation space for the first connection part 3171, thereby facilitating the compression of the gap between the electrical device 31 and the electrical device 31 disposed adjacent thereto as required, which is conducive to compacting the overall layout of each electrical device 31, thereby facilitating the formation of an integrated, compact, and miniaturized power distribution device 30, and improving the space utilization and energy density of the power distribution device 30.

[0266] The circuit element 36 includes two connectors 361, one of which is used to connect to the battery unit 10 (such as Figure 3The second connector 362 is connected to the battery cell 10 for low voltage control. The two connectors 361 are embedded in the cover 35, and the connector ports 3611 of the two connectors 361 are exposed outside the cover 35. According to the number and position of the electrical components 31 to be connected to the connector 361, the connector 361 is provided with at least one second connector 362 as required. The second connector 362 includes a conductive connecting portion 3622, one end of which is electrically connected to the connector 361, and the other end of which is extended toward the electrical component 31 to be connected. At one end of the conductive connecting portion 3622 close to the corresponding electrical component 31, the second connector 362 can be bent to form a second connecting portion 3621. The second connecting portion 3621 is bent toward the corresponding electrical component 31, and can be used for detachable plug-in mating with the first connecting portion 3171 of the corresponding electrical component 31. The plug-in matching direction of the second connection part 3621 and the corresponding first connection part 3171 can correspond to the assembly direction of the cover body 35 and the base 32. Based on this, when the assembly between the cover body 35 and the base 32 is completed, the second connection part 3621 and the corresponding first connection part 3171 can be precisely aligned and the plug-in matching of the second connection part 3621 and the corresponding first connection part 3171 can be completed at the same time, thereby reducing the assembly steps, ensuring and improving the connection reliability between the connector 361 and the electrical component 31, and improving the assembly efficiency and structural reliability of the distribution device 30.

[0267] The conductive connection part 3622 uses a conductive sheet or FPC or PCB to replace the wiring harness, thereby reducing the setting of the wiring harness, reducing the problems of wiring harness interference and wiring harness wear, ensuring and improving the structural reliability of the connector 361 and the second connector 362, and ensuring and improving the reliability and safety of the power distribution device 30. Among them, the connector 361 is embedded in the cover body 35, the conductive connection part 3622 is embedded in the cover body 35, and the cover body 35, the connector 361 and the conductive connection part 3622 are integrally injection molded.

[0268] The power distribution device 30 includes a packaging seat 38. The packaging seat 38 is installed on the side of the base 32 away from the cover 35. Based on the compact layout of the above-mentioned electrical components 31, the base 32 and the packaging seat 38 can enclose an internal space to accommodate the installation of the main fuse 3141.

[0269] The power distribution device 30 is provided on the heat exchange element 40 (such as Figure 3The power distribution device 30 is mainly arranged on the heat exchanger 40 with a packaging seat 38. A second limiting structure 382 is provided on the side of the packaging seat 38 facing the heat exchanger 40, and the second limiting structure 382 is a groove-shaped structure. The power distribution device 30 includes an insulating heat conductive member 37. The insulating heat conductive member 37 is provided with and embedded in the second limiting structure 382. The insulating heat conductive member 37 is integrally formed with the packaging seat 38. The side of the insulating heat conductive member 37 facing the heat exchanger 40 protrudes from the notch of the second limiting structure 382 and is thermally connected to the heat exchanger 40.

[0270] Each electrical component 31 mounted on the base 32 is provided with a conductive structure 311. The conductive structure 311 includes a first conductive portion 3112, a second conductive portion 3113 and a third conductive portion 3114. The first conductive portion 3112 is connected to the corresponding electrical component 31 and is extended toward the side close to the packaging seat 38. The third conductive portion 3114 is connected to the corresponding electrical component and is extended toward the side close to the packaging seat 38. The second conductive portion 3113 is bent and connected to one end of the first conductive portion 3112 close to the packaging seat 38 and one end of the third conductive portion 3114 close to the packaging seat 38. The second conductive portion 3113 is laid on the side of the base 32 facing the packaging seat 38. The side of the packaging seat 38 facing the base 32 is provided with a first limiting structure 381, the first limiting structure 381 is a hole-shaped structure, and the first limiting structure 381 is connected to the bottom of the groove of the second limiting structure 382. The second conductive part 3113 of the electrical device 31 is respectively limited in the corresponding first limiting structure 381. The side of the second conductive part 3113 close to the insulating heat conductive part 37 is provided with a heat conductive surface 3111, and the heat conductive surface 3111 is insulated and heat conductively connected to the surface of the insulating heat conductive part 37 corresponding to the first limiting structure 381.

[0271] Based on this, during the operation of the electrical device 31, the insulating heat conductive member 37 can conduct the heat generated by the electrical device 31, especially the conductive structure 311, to the heat exchange member 40, so as to quickly conduct the heat of the electrical device 31 to the outside of the power distribution device 30, thereby improving the heat dissipation performance and heat dissipation efficiency of the power distribution device 30 to the electrical device 31, reducing the risk of thermal failure of the electrical device 31, and ensuring and extending the service life of the power distribution device 30. Among them, the insulating heat conductive member 37 adopts a ceramic member with excellent thermal conductivity and voltage tolerance, so that the insulating heat conductive member 37 can reliably perform the heat conduction effect, and at the same time can reduce the risk of the insulating heat conductive member 37 being broken down by high voltage during the operation of the electrical device 31, thereby ensuring and extending the service life of the insulating heat conductive member 37, and ensuring and improving the service life and use safety of the power distribution device 30.

[0272] The conductive structure 311 of the relay 312 is disposed outside the accommodating cavity 321 without occupying additional space inside the accommodating cavity 321. In particular, the second conductive portion 3113 of the conductive structure 311 of the relay 312 is disposed outside the accommodating cavity 321 near the insulating heat-conducting member 37, so that the conductive structure 311 of the relay 312 can be directly insulated and heat-conductingly connected to the insulating heat-conducting member 37 via the second conductive portion 3113.

[0273] See also Figure 3 , Figure 4 Some embodiments of the present application provide a battery 1, including a power distribution device 30 provided in an embodiment of the present application.

[0274] By adopting the above-mentioned solution, the battery 1 can ensure and improve the space utilization, volume utilization and energy density of the battery 1 by applying the power distribution device 30 provided in the embodiment of the present application.

[0275] See also Figure 1 Some embodiments of the present application provide an electrical device, including the battery 1 provided in the embodiments of the present application.

[0276] By adopting the above solution, the electrical equipment can ensure and improve the performance of the electrical equipment by applying the battery 1 provided in the embodiment of the present application.

[0277] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions or improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A power distribution device, characterized in that: include: A base, forming a receiving cavity; A relay is fixedly mounted on the base, the relay comprises a switch unit, at least part of the outer wall of the switch unit is exposed in the accommodating cavity, and the inner wall of the accommodating cavity is connected to the relay to fix the relay in the accommodating cavity.

2. The power distribution device according to claim 1, characterized in that: The relay abuts against at least a portion of the inner wall.

3. The power distribution device according to claim 2, characterized in that: The relay has a first gap therebetween from at least a portion of the inner wall.

4. The power distribution device according to claim 3, characterized in that: The first gap is used to be filled with structural adhesive, and the relay is bonded to at least a portion of the inner wall by the structural adhesive.

5. The power distribution device according to any one of claims 2 to 4, characterized in that: The inner wall is provided with a protruding structure, and the inner wall abuts against the relay through at least a portion of the protruding structure.

6. The power distribution device according to claim 5, characterized in that: The accommodating cavity has an opening, the inner wall includes a bottom wall, a top wall, a first side wall, a second side wall and a third side wall, the bottom wall is used to support the relay, the top wall is arranged opposite to the bottom wall, the first side wall is arranged opposite to the second side wall, and the third side wall is arranged opposite to the opening; At least a portion of the bottom wall, the top wall, the first side wall, the second side wall, and the third side wall is provided with the protruding structure.

7. The power distribution device according to claim 6, characterized in that: The protrusion structure provided on the bottom wall, the top wall, the first side wall and the second side wall is a first protrusion, and the first protrusion is extended in a direction away from the opening.

8. The power distribution device according to claim 6 or 7, characterized in that: The protrusion structure provided on the third side wall is a second protrusion. There are at least two second protrusions, and the second protrusions are cross-connected.

9. The power distribution device according to any one of claims 1 to 8, characterized in that: The accommodating cavity has an opening, and the power distribution device includes a covering member, which is connected to the base and is used to block the opening.

10. The power distribution device according to claim 9, characterized in that: The cover member is penetrated with a through hole for the contact of the relay to pass through.

11. The power distribution device according to claim 10, characterized in that: Each of the cover pieces is provided with at least one through hole, each of the relays has at least two contacts, each of the through holes corresponds to at least one contact, and each of the through holes is used for the corresponding contact to pass through.

12. The power distribution device according to claim 11, characterized in that: The cover member is provided with a barrier structure for separating two adjacent contacts of the relay.

13. The power distribution device according to any one of claims 10 to 12, characterized in that: The power distribution device comprises a shielding member, which is arranged on a side of the covering member away from the accommodating cavity and is used to shield the contacts of the relay.

14. The power distribution device according to any one of claims 9 to 13, characterized in that: The covering member is snap-connected to the inner wall of the accommodating cavity via snap-fits.

15. The power distribution device according to any one of claims 1 to 14, characterized in that: There are at least two accommodating cavities, there are at least two relays, and at least some of the relays are installed in the accommodating cavities one-to-one.

16. The power distribution device according to claim 15, characterized in that: The base is provided with at least one insulating structure, and the insulating structure is provided between two adjacent accommodating cavities and is used to separate the contacts corresponding to the two relays.

17. The power distribution device according to any one of claims 1 to 16, characterized in that: The power distribution device comprises an electrical component and a cover, wherein the electrical component comprises the relay, and at least two electrical components are provided and both are mounted on the base; The cover is arranged on the same side of each of the electrical components and connected to the base. A circuit element is arranged on one side of the cover facing each of the electrical components for electrically connecting with each of the electrical components.

18. The power distribution device according to claim 17, characterized in that: The gap between the electrical device and the electrical device adjacent to it is a second gap. The electrical device is provided with a first connector, which includes a first connecting portion for detachably connecting to the circuit element. The first connecting portion is located outside each of the second gaps corresponding to the electrical device.

19. The power distribution device according to claim 17 or 18, characterized in that: The circuit element comprises a connector and a second connecting member, the connector is embedded in the cover, and the connector port of the connector is exposed outside the cover; The second connecting member includes a conductive connecting portion and a second connecting portion, one end of the conductive connecting portion is connected to the connector, the other end of the conductive connecting portion is connected to the second connecting portion, and the second connecting portion is bent toward the corresponding electrical component for detachable connection with the corresponding electrical component.

20. The power distribution device according to claim 19, characterized in that: The conductive connection portion is embedded in the cover body; And / or, the cover body, the connector and the conductive connecting part are an integrated structure.

21. The power distribution device according to any one of claims 1 to 20, characterized in that: The power distribution device comprises an electrical component and an insulating heat-conducting member, the electrical component comprises the relay, and the electrical component is mounted on the base; One side of the insulating heat conductive member is connected to at least a portion of the electrical device, and the other side of the insulating heat conductive member is used to be connected to a heat exchange member. The insulating heat conductive member is used to transfer heat from the electrical device to the heat exchange member.

22. The power distribution device according to claim 21, characterized in that: The power distribution device comprises a packaging seat, and the packaging seat is connected to a side of the base close to the insulating heat conductive member; The insulating heat-conducting member is installed on the packaging seat, and a surface of the insulating heat-conducting member facing away from the electrical device is exposed on the packaging seat.

23. A battery, characterized in that: Comprising a power distribution device as claimed in any one of claims 1-22.

24. An electrical equipment, characterized in that: Comprising a battery as claimed in claim 23.

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