Power distribution apparatus, battery, and electric device

Abstract

A power distribution apparatus (30), a battery (1), and an electric device. The power distribution apparatus (30) comprises a base (32) and a relay (312). The base (32) forms an accommodating cavity (321). The relay (312) comprises a switch unit (3124), and at least part of the outer wall of the switch unit (3124) is exposed in the accommodating cavity (321). The inner wall of the accommodating cavity (321) is connected to the relay (312) so as to fix the relay (312) in the accommodating cavity (321). The power distribution apparatus (30) can fix the relay (312) in the accommodating cavity (321). The relay (312) fixed in the accommodating cavity (321) can use the inner wall of the accommodating cavity (321) as its own housing structure. Therefore, the housing structure of the relay (312) can be removed, an integrated and miniaturized power distribution apparatus can be formed, and design margin and space waste can be reduced.

Description

Power distribution devices, batteries and electrical equipment

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to the Chinese patent application filed with the State Intellectual Property Office of the People's Republic of China on August 17, 2023, with application number 202311041171.4 and invention name "Distribution device, battery and electrical equipment", the entire contents of which are incorporated by reference into this application. Technical Field

[0003] The embodiments of the present application relate to the field of batteries, and in particular to a power distribution device, a battery, and electrical equipment. Background Art

[0004] A power distribution unit (PDU) is a control unit that distributes battery energy, specifically high voltage. It typically consists of a housing and electrical components such as relays assembled within it. However, existing PDUs suffer from significant design margins and wasted space, resulting in their large size.

[0005] Application Contents

[0006] 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.

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

[0008] In a first aspect, a power distribution device is provided, comprising:

[0009] a base, forming a receiving cavity;

[0010] The relay is fixedly mounted on the base. The relay comprises a switch unit. At least a portion 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.

[0011] The power distribution device provided in the embodiment of the present application can achieve the purpose of fixing 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, while ensuring that the base can play the role of accommodating, limiting, fixing, and protecting the relay, the shell structure of the relay itself can be effectively omitted, which can be conducive to the compact overall layout of the base and the relay, thereby facilitating 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, effectively reduce the weight of the power distribution device, and help reduce the production cost of the power distribution device.

[0012] In some embodiments, the relay abuts at least a portion of the inner wall.

[0013] By adopting the above solution, the relay can be at least partially abutted against the inner wall, thereby ensuring and enhancing the limiting and positioning effect of the inner wall of the accommodating chamber on the relay. Based on this, it is helpful to stabilize the installation state of the relay in the accommodating chamber, especially when the relay vibrates during operation, and thus reduce the risk of the relay falling out of the accommodating chamber. In addition, because the relay at least partially abuts against the inner wall, the space margin of the accommodating chamber after the relay is installed can be constrained and reduced, thereby helping to reduce the design margin, space waste, and occupied space of the power distribution device, and promoting the miniaturization and lightweighting of the power distribution device.

[0014] In some embodiments, a first gap is provided between the relay and at least a portion of the inner wall.

[0015] By adopting the above solution, during assembly of the relay when it is placed in the accommodating chamber, the first gap between the relay and at least a portion of the inner wall creates an assembly margin, providing assembly space. This facilitates smooth placement of the relay in the accommodating chamber, thereby improving assembly convenience and efficiency between the relay and the accommodating chamber. Furthermore, once the relay is already in the accommodating chamber, the first gap between the relay and at least a portion of the inner wall creates a connection space, allowing the relay and the accommodating chamber to be connected at the connection space, thereby facilitating stable and reliable fixing of the relay to the accommodating chamber.

[0016] 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.

[0017] By adopting the above solution, when the relay is already placed in the accommodating cavity, a connecting space can be formed through the first gap between the relay and at least a portion of the inner wall, which can be used to fill the gap with structural adhesive, so that the relay and the corresponding portion of the inner wall can be reliably and firmly bonded together via the structural adhesive. Based on this, the accommodating cavity's ability to secure the relay can be effectively maintained and enhanced, thereby stabilizing the relay's installation state in the accommodating cavity, and particularly reliably stabilizing the relay's state in the accommodating cavity when the relay vibrates during operation. Furthermore, because the first gap can be used to fill the structural adhesive, the first gap does not constitute a residual space in the accommodating cavity after the relay is installed. This can reduce the design margin, space waste, and occupied space of the distribution device, thereby facilitating the miniaturization and lightweighting of the distribution device.

[0018] 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.

[0019] By adopting the above solution, the inner wall of the accommodating chamber can be provided with a raised structure, so that at least part of the raised structure abuts against the relay, thereby ensuring and enhancing the limiting and positioning effect of the relay. Based on this, it is beneficial to stabilize the installation state of the relay in the accommodating chamber, especially when the relay vibrates during operation, and thus reliably stabilize the state of the relay in the accommodating chamber, thereby reducing the risk of the relay falling out of the accommodating chamber, and ensuring and improving the installation stability and operational reliability of the relay. On this basis, the contact area between the inner wall of the accommodating chamber and the relay can also be correspondingly reduced. Based on this, during the assembly of the relay when it is removed from the accommodating chamber, the friction between the relay and the inner wall can be effectively reduced, thereby improving the assembly convenience between the relay and the accommodating chamber.

[0020] By adopting this solution, the inner wall can also facilitate contact with the relay through a portion (i.e., at least part of the raised structure) while forming a first gap with the relay in a portion (i.e., in the area without the raised structure). Based on this, during assembly of the relay, the first gap can create an assembly margin, providing assembly space and improving assembly convenience between the relay and the receiving chamber. Furthermore, once the relay is already placed in the receiving chamber, the first gap can form a connecting space, facilitating stable and reliable fixing of the relay to the receiving chamber.

[0021] 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.

[0022] By adopting the above solution, it is convenient to take the relay into and place it in the accommodating cavity 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 is placed in the accommodating cavity, thereby ensuring and improving the installation stability of the relay in the accommodating cavity, and ensuring and improving the accommodating, limiting, fixing and protecting effects of the accommodating cavity on the relay.

[0023] 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.

[0024] By adopting the above solution, during assembly of the relay when it is placed in the accommodating chamber, at least a portion of the bottom wall, top wall, first side wall, second side wall, and third side wall can reduce the contact area with the relay due to the provided protrusion structure, thereby reducing friction between the walls and the relay. Furthermore, a first gap can be formed between the area without the protrusion structure and the relay, thereby creating an assembly margin through the first gap and providing assembly space. This improves the ease of assembly between the relay and the accommodating chamber.

[0025] By adopting the above solution, when the relay is 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 abut against the relay via at least part of the raised structure, thereby ensuring and enhancing the relay's positional positioning. Furthermore, a connecting space can be formed through the first gap to stably and reliably secure the relay in the accommodating chamber, thereby improving the stability of the relay's installation in the accommodating chamber.

[0026] 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.

[0027] By adopting the above solution, during assembly of the relay when it is placed in the receiving chamber, at least a portion of the bottom wall, top wall, first side wall, and second side wall can, via the first protrusion extending away from the opening, conform to the direction of assembly and disassembly of the relay into the receiving chamber, thereby reducing friction with the relay, particularly in directions other than assembly and disassembly. This improves the ease and efficiency of assembly between the relay and the receiving chamber while ensuring the effective positional restraint of the relay.

[0028] In some embodiments, the protrusion structure provided on the third sidewall is a second protrusion. There are at least two second protrusions, and the second protrusions are cross-connected.

[0029] 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 a portion of the cross-connected second protrusions, thereby enhancing the relay's positional positioning. Furthermore, the first gaps can be formed by the cells between the second protrusions, thereby forming a connecting space through the first gaps. This can facilitate improving the installation stability of the relay in the accommodating cavity.

[0030] In some embodiments, the accommodating cavity has an opening, and the power distribution device includes a cover member connected to the base for sealing the opening.

[0031] By adopting the above-mentioned 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 opening of the accommodating cavity can be sealed 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.

[0032] In some embodiments, the cover member has a through hole therethrough for the contacts of the relay to pass through.

[0033] By adopting the above solution, when the relay contacts are positioned toward the opening and the cover member seals the opening of the accommodating cavity, the cover member can be provided with through-holes through which the relay contacts pass. This facilitates the relay contacts being exposed through the cover member and connected to the high-voltage circuit to control the on / off function of the high-voltage circuit. This ensures that both the cover member and the relay function effectively, thereby ensuring the performance of the power distribution device.

[0034] 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.

[0035] By adopting the above solution, when the relay is positioned with its contacts facing the opening and the cover member blocks the opening of the accommodating cavity, the cover member can be provided with at least one through-hole, and at least two contacts of the relay are exposed through the through-hole in a one-to-one or one-to-many manner. Based on this, the respective functions of the cover member and the relay can be taken into account, and each contact 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 into different through-holes to improve the insulation between the contacts of the relay accordingly, thereby reducing the risk of short circuits and reducing the safety hazards of the distribution device.

[0036] In some embodiments, the cover is provided with a barrier structure for separating two adjacent contacts of the relay.

[0037] By adopting the above solution, when the relay contacts pass through corresponding through-holes in the cover, the cover can insulate and separate the two adjacent contacts via the barrier structure provided between them. This effectively increases the creepage distance between the two adjacent contacts and improves the insulation between them, thereby reducing the risk of short circuits and alleviating safety hazards in the power distribution device.

[0038] In some embodiments, the power distribution device includes a shielding member, which is provided on a side of the cover member facing away from the accommodating cavity and is used to shield the contacts of the relay.

[0039] By adopting the above solution, while ensuring the respective functions of the cover and the relay, a shielding member disposed on the side of the cover facing away from the accommodating cavity can shield the cover and the relay contacts exposed through the cover's through-hole, particularly preventing the relay contacts from being exposed to the outside of the power distribution device. This, on the one hand, protects the cover and the corresponding relay contacts through the shielding member, thereby ensuring and extending the service life of the relay and the power distribution device. On the other hand, the shielding member reliably prevents hands or external devices from contacting the relay contacts and thus conducting electricity, thereby reducing safety hazards of the power distribution device and improving its performance.

[0040] In some embodiments, the covering member is snap-connected to the inner wall of the accommodating cavity by snap-fitting.

[0041] By adopting the above solution, once the relay has been placed in the receiving chamber and connected to the inner wall of the receiving chamber, the cover can be easily and quickly removably connected to the base by aligning the cover with the side of the relay closest to the opening and engaging the cover's snaps with the corresponding snaps on the inner wall of the receiving chamber. This ensures and improves the convenience and reliability of the connection between the cover and the base, and ensures that the cover can accurately and reliably seal the opening of the receiving chamber.

[0042] In some embodiments, there are at least two accommodating cavities, at least two relays, and at least some of the relays are installed in the accommodating cavities one-to-one.

[0043] By adopting the above solution, the base can securely mount at least two relays in a one-to-one manner through at least two accommodating cavities. This ensures that the base can, through each accommodating cavity, perform its functions of accommodating, limiting, securing, and protecting the relays mounted therein. Furthermore, the housing structures of at least two relays can be omitted, significantly reducing the overall layout of the base and relays, further facilitating the integration, miniaturization, lightweighting, and simplification of the power distribution device.

[0044] In some embodiments, the base is provided with at least one insulating structure, which is provided between two adjacent accommodating cavities and is used to separate the contacts of the corresponding two relays.

[0045] By adopting the above solution, the base can be provided with an insulating structure between two adjacent accommodating cavities, thereby isolating the two adjacent accommodating cavities. This insulation structure can thereby insulate and separate the two relays installed in the two accommodating cavities, and in particular, the contacts of the two relays. This effectively improves the insulation between the contacts of the two adjacent caseless relays, reduces the risk of short circuits, and improves the reliability and safety of the power distribution device.

[0046] 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;

[0047] The cover is arranged on the same side of each electrical component and is connected to the base. A circuit element is arranged on one side of the cover facing each electrical component for electrically connecting with each electrical component.

[0048] By adopting the above solution, by mounting all electrical components on the base, it is possible, on the one hand, to facilitate the planning, optimization, and compactness of the layout of the electrical components, thereby facilitating a compact overall layout of the base and the electrical components, and promoting the integration, miniaturization, lightweighting, and simplicity of the power distribution device. Furthermore, the base, in combination with the cover connected to the base, can provide reliable protection for the electrical components mounted on the base, thereby ensuring and extending the service life of the electrical components and the power distribution device.

[0049] By adopting the above solution, by placing the integrated circuit components on the side of the cover body facing the electrical components, the cover body can provide better protection for the circuit components, thereby reducing the risk of damage to the circuit components, thereby ensuring and extending the service life of the circuit components. Furthermore, when the cover body is assembled to the base, the precise alignment and electrical connection between the circuit components and the electrical components can be completed simultaneously, thereby reliably establishing the required electrical connection relationship between the electrical components through the circuit components, ensuring that the power distribution device can achieve the required function. Furthermore, the number of assembly steps can be reduced, the connection convenience and reliability between the circuit components and the electrical components can be improved, and the assembly convenience and efficiency of the power distribution device can be improved.

[0050] In some embodiments, the gap between an electrical device and an adjacent electrical device is a second gap, and the electrical device is provided with a first connector, which includes a first connecting portion for detachable connection to a circuit element, and the first connecting portion is located outside each second gap of the corresponding electrical device.

[0051] By adopting the above solution, when the gaps between an electrical component and an adjacent electrical component are both defined as second gaps, by arranging the first connecting portion outside each second gap of the corresponding electrical component, on the one hand, it is possible to facilitate the connection operation of the first connecting portion in the space outside each second gap of the corresponding electrical component, thereby ensuring and improving the operational convenience of connecting and disconnecting the first connecting portion. On the other hand, each second gap of the electrical component does not need to provide either a space for accommodating the first connecting portion or a space for the connection operation of the first connecting portion, thereby facilitating the desired compression of the gaps between the electrical component and the adjacent electrical component, which can facilitate the compactness of the overall layout of the electrical components, thereby facilitating the formation of an integrated, compact, and miniaturized power distribution device.

[0052] In some embodiments, the circuit element includes a connector and a second connector, the connector is embedded in the cover, and the connector port is exposed outside the cover;

[0053] 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, and the other end of the conductive connecting portion is connected to the second connecting portion. The second connecting portion is bent toward the corresponding electrical component for detachable connection with the corresponding electrical component.

[0054] In some embodiments, the conductive connection portion is embedded in the cover.

[0055] By adopting the above solution, the cover body can provide an excellent protective effect for the portion in which the conductive connector is embedded, thereby reducing the risk of interference, wear, and damage to the conductive connector, and extending the service life of the conductive connector and the circuit components. Furthermore, because the conductive connector is embedded in the cover body, the installation stability and installation accuracy of the circuit components 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 components and various electrical components is completed at the same time, the alignment accuracy between the circuit components and various electrical components can be effectively improved, thereby improving the connection convenience and connection reliability between the circuit components and various electrical components.

[0056] In some embodiments, the cover, the connector, and the conductive connection portion are an integrated structure.

[0057] By adopting the above scheme, the cover body and the connector and conductive connection 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 connection part can be effectively enhanced, the comprehensive structural strength of the cover body and the connector and the conductive connection part can be effectively enhanced, the protective effect of the cover body on the connector and the conductive connection part can be effectively enhanced, the risk of wear and damage to the connector can be reduced, and the risk of interference, wear and the like of the conductive connection part can be reduced.

[0058] By adopting the above scheme, the assembly process between the cover body and the connector, and between the cover body and the conductive connection part can be simplified, and it is also convenient to complete the precise alignment between the second connection part of the second connector and the first connection part of the corresponding electrical component when assembling the cover body, and complete the electrical connection and coordination between the second connection part and the corresponding first connection part. That is, the connection process between the second connector and the electrical component can be simplified, thereby effectively reducing the assembly steps, effectively ensuring and improving the connection reliability between the connector and the electrical component, and effectively improving the assembly efficiency and structural reliability of the distribution device.

[0059] In some embodiments, the power distribution device includes an electrical component and an insulating heat-conducting member, the electrical component includes a relay, and the electrical component is mounted on a base;

[0060] One side of the insulating heat conductive member is connected to at least a portion of the electrical component, and the other side of the insulating heat conductive member is used to connect to the heat exchange member. The insulating heat conductive member is used to transfer heat from the electrical component to the heat exchange member.

[0061] By adopting the above scheme, the power distribution device can be connected to the electrical device through the insulating heat conductive member in an insulated and heat conductive manner, and can be connected to the external heat exchanger through the insulating heat conductive member in an insulated and heat conductive manner. Based on this, on the one hand, the insulation performance of the insulating heat conductive member can be used to ensure that the electrical device and the heat exchanger can be insulated through the insulating heat conductive member, thereby basically avoiding short circuits between the electrical device, the insulating heat conductive member and the heat exchanger, and effectively reducing the risk of high-voltage short circuit ignition between the electrical device, the insulating heat conductive member and the heat exchanger. On the other hand, it is convenient to exchange heat and conduct heat between the electrical device and the heat exchanger through the insulating heat conductive member, especially to conduct heat generated by the electrical device to the heat exchanger through the insulating heat conductive member, so as to facilitate the diffusion and conduction of heat generated by the electrical device to the outside of the power distribution device. As a result, the heat dissipation performance and heat dissipation efficiency of the power distribution device to the electrical device can be effectively guaranteed and improved, the risk of thermal failure of the electrical device can be effectively reduced, and the service life of the electrical device and the power distribution device can be effectively guaranteed and extended.

[0062] 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;

[0063] 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 component is exposed on the packaging seat.

[0064] By adopting the above solution, the insulating thermally conductive part can be fixedly mounted via the packaging base, so that the mounting position and mounting state of the insulating thermally conductive part relative to the packaging base are stable and secure, thereby facilitating accurate and stable alignment of the insulating thermally conductive part with the electrical component, and facilitating a precise and reliable insulating thermal connection between the insulating thermally conductive part and the electrical component. On this basis, since the side of the insulating thermally conductive part facing the electrical component is insulated and thermally connected to the electrical component, while the surface of the insulating thermally conductive part facing away from the electrical component is exposed to the packaging base and thermally connected to the heat exchanger, the insulating thermally conductive part can be directly insulated and thermally connected between the electrical component and the heat exchanger, thereby reducing the blocking effect of the packaging base on the heat conduction path of the insulating thermally conductive part, and ensuring and improving the heat conduction effect of the insulating thermally conductive part between the electrical component and the heat exchanger.

[0065] In a second aspect, a battery is provided, comprising the power distribution device provided in an embodiment of the present application.

[0066] By adopting the above solution, the battery can ensure and improve the space utilization, volume utilization and energy density of the battery by applying the distribution device provided in the embodiment of the present application.

[0067] In a third aspect, an electrical device is provided, comprising the battery provided in an embodiment of the present application.

[0068] 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

[0069] In order to clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments or descriptions of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0070] FIG1 is a schematic structural diagram of a vehicle provided in some embodiments of the present application;

[0071] FIG2 is an exploded schematic diagram of a battery provided in some embodiments of the present application;

[0072] FIG3 is a schematic diagram of a partial structure of a battery provided in some embodiments of the present application;

[0073] FIG4 is a schematic structural diagram of a power distribution device provided in some embodiments of the present application;

[0074] FIG5 is a schematic diagram of the assembly structure of a base, a relay, and a cover provided in some embodiments of the present application;

[0075] FIG6 is an exploded schematic diagram of the base, relay, and cover provided in FIG5 ;

[0076] FIG7 is a schematic diagram of the assembly structure of a base and a relay provided in some embodiments of the present application;

[0077] FIG8 is a schematic structural diagram of a base provided in some embodiments of the present application;

[0078] FIG9 is an exploded schematic diagram 1 of a power distribution device provided in some embodiments of the present application;

[0079] FIG10 is an exploded schematic diagram of the electrical components, cover, and circuit elements provided in FIG9 ;

[0080] FIG11 is a second exploded schematic diagram of the power distribution device provided in FIG9 ;

[0081] FIG12 is a front view of a power distribution device provided in some embodiments of the present application;

[0082] FIG. 13 is a cross-sectional view taken along AA provided in FIG. 12 .

[0083] In the figures, reference numerals are as follows: 1-battery, 2-controller, 3-motor; 10-battery unit; 20-housing, 21-first portion, 22-second portion; 30-power distribution device; 40-heat exchange element, 41-thermal management component; 31-electrical component, 311-conductive structure, 3111-heat-conducting surface, 3112-first conductive portion, 3113-second conductive portion, 3114-third conductive portion; 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, 3211-inner wall, 3212-bottom wall, 3213-top wall, 3214-first A side wall, 3215-a second side wall, 3216-a third side wall, 3217-an opening; 322-a first gap; 323-a protrusion structure, 3231-a first protrusion, 3232-a second protrusion; 324-an insulating structure; 33-a covering member, 331-a through hole, 332-a partition structure, 333-a snap; 34-a shielding member; 35-a cover body; 36-a circuit element, 361-a connector, 3611-a socket, 362-a second connecting member, 3621-a second connecting portion, 3622-a conductive connecting portion; 37-an insulating thermal conductive member; 38-a packaging seat, 381-a first limiting structure, 382-a second limiting structure. DETAILED DESCRIPTION

[0084] In order to make the technical problems, technical solutions and beneficial effects to be solved by this application clear and understandable, the present application is described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.

[0085] In the description of this application, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0086] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of technical features indicated. Thus, features defined as "first" or "second" may explicitly or implicitly include one or at least two of such features. In the description of this application, "at least two" means two or more, unless otherwise specifically defined.

[0087] In this application, unless otherwise expressly specified or limited, terms such as "mounted," "connected," "connect," and "fixed" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components or interactions between two components. Those skilled in the art will understand the specific meanings of these terms in this application based on specific circumstances.

[0088] In a battery, the power distribution unit (PD) is the control unit that distributes battery energy, specifically high voltage. In some cases, the PD includes a housing and electrical components such as relays assembled within it. However, the assembly and coordination of the PD components can lead to significant design margins and wasted space, resulting in a large size and hindering miniaturization.

[0089] 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, while ensuring that the base can accommodate, limit, fix, and protect the relay, the shell structure of the relay itself can be effectively omitted, which can be conducive to compacting the overall layout of the base and the relay, thereby facilitating the formation of an integrated, miniaturized, lightweight, and simplified power distribution device, effectively reducing the design margin, space waste, and occupied space of the power distribution device, effectively reducing the weight of the power distribution device, and helping to reduce the production cost of the power distribution device.

[0090] 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 distribute high voltage to the batteries.

[0091] The battery disclosed in the embodiments of the present application can be a modular structure including at least one battery cell to provide higher voltage and capacity, such as a battery module or battery pack. The battery cell can 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, among others. The battery cell can be cylindrical, flat, rectangular, or in other shapes, among others. The battery cell can be packaged in various ways, such as cylindrical, prismatic, or soft-pack battery cells.

[0092] The battery disclosed in the embodiments 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 power tools, grinding power tools, assembly power tools, and railway power tools, such as electric drills, electric grinders, electric wrenches, electric screwdrivers, electric hammers, impact drills, concrete vibrators, and electric planers, etc.

[0093] In order to illustrate the technical solution provided by this application, the following is a detailed description with reference to specific drawings and embodiments, taking "electrical equipment being a vehicle" as an example.

[0094] Please refer to Figure 1, which is a schematic structural diagram of a vehicle provided in some embodiments of the present application. The vehicle can be a fuel vehicle, a gas vehicle or a new energy vehicle. The new energy vehicle can be a pure electric vehicle, a hybrid vehicle or an extended-range vehicle, etc. A battery 1 is provided inside the vehicle, and the battery 1 can 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. The controller 2 is used to control the battery 1 to power the motor 3, for example, for starting, navigating and operating power requirements during driving of the vehicle.

[0095] In some embodiments of the present application, the battery 1 can serve not only as the operating power source of the vehicle, but also as the driving power source of the vehicle, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle.

[0096] Please refer to Figures 2 and 3. Figure 2 is an exploded schematic diagram of a battery 1 provided in some embodiments of the present application, and Figure 3 is a partial structural schematic diagram of a battery 1 provided in some embodiments of the present application. The battery 1 includes a battery cell 10 and a housing 20, with the battery cell 10 housed within the housing 20. The housing 20 provides a storage space for the battery cell 10, and the structure of the housing 20 can be diverse and flexible. In some embodiments, the housing 20 can include a first portion 21 and a second portion 22, which overlap with each other and together define a storage space for the battery cell 10. The second portion 22 can be a hollow structure with one end open, and the first portion 21 can be a plate-like structure, overlapping the open side of the second portion 22, so that the first portion 21 and the second portion 22 together define a storage space. Alternatively, the first portion 21 and the second portion 22 can each be a hollow structure with one end open, with the open side of the first portion 21 overlapping the open side of the second portion 22. Of course, the box body 20 formed by the first part 21 and the second part 22 can be in various shapes, such as a cylinder, a cuboid, etc.

[0097] 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 the at least two battery cells 10 are connected in both series and in parallel.

[0098] 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 a hybrid manner, and the entire battery cell may be housed within the housing 20. 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, among others. The battery cell may be cylindrical, flat, rectangular, or in other shapes. The battery cell may be packaged in various ways, such as cylindrical, prismatic, or soft-pack battery cells.

[0099] Alternatively, the battery unit 10 may be a battery module or battery assembly. At least two battery cells may be connected in series, parallel, or in series to form a modular structure, i.e., a battery module or battery assembly. At least two battery modules or battery assembly may then be connected in series, parallel, or in series to form a whole assembly, which is housed within the housing 20.

[0100] In some embodiments, the battery 1 may further include a power distribution device 30, which is housed in the housing 20. The power distribution device 30 is connected to the battery cells 10 and the like, and may serve as a control unit for distributing energy from the battery 1, distributing high voltage to the battery 1.

[0101] In some embodiments, the battery 1 may further include a thermal management component 41, housed within the housing 20 and configured to exchange heat with components such as the battery cell 10 and the power distribution device 30 to regulate the temperature of the battery 1. The thermal management component 41 may be a liquid cooling plate. In some embodiments, a single thermal management component 41 may be provided, positioned on the same side of the battery cell 10 and the power distribution device 30 to facilitate heat exchange with the battery cell 10 and the power distribution device 30. In some embodiments, at least two thermal management components 41 may be provided, allowing for flexible design of the location and configuration of the thermal management components 41, allowing at least two thermal management components 41 to separately exchange heat with the battery cell 10 and the power distribution device 30. The thermal management component 41 may also be an air cooling system, generating airflow that passes through the battery cell 10 and the power distribution device 30 to facilitate heat exchange with the battery cell 10 and the power distribution device 30. The thermal management component 41 may also have other structural forms.

[0102] Of course, the battery 1 may further include other structures. For example, the battery 1 may further include a busbar component (not shown in the figure) for achieving electrical connection between at least two battery cells 10 .

[0103] 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.

[0104] Referring to Figures 4, 5, and 6, some embodiments of the present application provide a power distribution device 30, comprising a base 32 and a relay 312. The base 32 defines a receiving cavity 321. The relay 312 is fixedly mounted on the base 32. The relay 312 includes a switch unit 3124, at least a portion of the outer wall of the switch unit 3124 being exposed within the receiving cavity 321. The inner wall 3211 of the receiving cavity 321 is connected to the relay 312 to secure the relay 312 to the receiving cavity 321.

[0105] It should be noted that the base 32 is a housing component of the power distribution device 30 and has a certain degree of structural strength and rigidity. The base 32 is provided with at least one accommodating cavity 321, which can be used to securely install the relay 312. The accommodating cavity 321 has an opening 3217, through which the relay 312 can be placed and removed from the accommodating cavity 321. The opening 3217 of the accommodating cavity 321 can be located on any side of the base 32. When there are at least two accommodating cavities 321, the openings 3217 of the at least two accommodating cavities 321 can be located on the same side of the base 32 or on different sides of the base 32.

[0106] It should also be noted that relay 312 is an electrical control device that causes a predetermined step change in the controlled variable in the electrical output circuit when the change in the input variable (stimulation variable) reaches a specified requirement. Relay 312 may include a main positive relay 3121, a main negative relay 3122, etc.

[0107] The relay 312 includes a contact 3125 and a switch unit 3124. The contact 3125 is used to connect to the high-voltage circuit, and the switch unit 3124 is used to control the contact 3125 to close or open. By closing or opening the contact 3125, the high-voltage circuit can be controlled to be on or off. In some embodiments, the switch unit 3124 can generate an electromagnetic force when energized, prompting the contact 3125 to close or open. 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 through it, prompting the contact 3125 to close or open. Of course, in other embodiments, the switch unit 3124 can adopt other structural forms, or can adopt other principles to achieve the control of the contact 3125 to close or open.

[0108] It should also be noted that the relays 312 can be fixedly installed in the accommodating cavities 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 on a one-to-one basis.

[0109] The relay 312 is fixedly mounted in the accommodating cavity 321 so that at least a portion of the outer wall of its switch unit 3124 is exposed within the accommodating cavity 321. The outer wall of the switch unit 3124 includes the exposed outer surface portions of the various 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 wrapped around and obscured by the coil 31242, the outer wall of the switch unit 3124 primarily includes the outer circumference of the outermost coil 31242. If the outer circumference of the iron core 31241 is partially wrapped around and obscured by the coil 31242, the outer wall of the switch unit 3124 includes the outer circumference of the outermost coil 31242 and the outer circumference of the iron core 31241 not obscured 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 that is not blocked by the bracket 31243, and the outer peripheral surface of the iron core 31241 that is not blocked by the bracket 31243 and the coil 31242.

[0110] Based on this, relay 312, which is fixedly mounted in accommodating cavity 321, can use the inner wall 3211 of accommodating cavity 321 to replace its own outer shell structure for protection. This allows relay 312's own outer shell structure to be omitted, meaning that relay 312, which is fixedly mounted in accommodating cavity 321, is a caseless relay. The inner wall 3211 of accommodating cavity 321 refers to the various walls that enclose and form accommodating cavity 321.

[0111] On this basis, the inner wall 3211 of the accommodating cavity 321 can be connected to the relay 312 located therein to secure the relay 312 to the accommodating cavity 321 and prevent the relay 312 from escaping the accommodating cavity 321, particularly preventing the relay 312 from escaping the accommodating cavity 321 due to vibration during operation. The inner wall 3211 of the accommodating cavity 321 can be connected to the relay 312 via a detachable connection or a fixed connection to secure the relay 312 to the accommodating cavity 321. The detachable connection method may include, but is not limited to, a snap-fit ​​connection, screw locking, and the like. The fixed connection method may include, but is not limited to, bonding and the like.

[0112] In summary, the power distribution device 30 provided in the embodiment of the present application can secure the relay 312 to the accommodating cavity 321 by accommodating the relay 312 within 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 a portion of the outer wall of its switch unit 3124 within the accommodating cavity 321, so that the inner wall 3211 of the accommodating cavity 321 replaces its own outer shell structure. 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 helping to reduce the production cost of the distribution device 30.

[0113] Please refer to FIG. 4 , FIG. 7 , and FIG. 8 . In some embodiments of the present application, the relay 312 abuts against at least a portion of the inner wall 3211 .

[0114] It should be noted that the inner wall 3211 of the accommodating chamber 321 includes all the walls that form the accommodating chamber 321. The relay 312 may abut against one wall or at least two walls. The wall abutting the relay 312 may abut against the relay 312 partially or entirely (i.e., the entire wall).

[0115] By adopting the above solution, the relay 312 can be brought into at least partial contact with the inner wall 3211, thereby ensuring and enhancing the limiting and positioning effect of the inner wall 3211 of the accommodating chamber 321 on the relay 312. This helps stabilize the installation state of the relay 312 in the accommodating chamber 321, and in particular, reliably stabilizes the state of the relay 312 in the accommodating chamber 321 when the relay 312 vibrates during operation, thereby reducing the risk of the relay 312 falling out of the accommodating chamber 321. Furthermore, because the relay 312 is at least partially in contact with the inner wall 321, the space margin of the accommodating chamber 321 after the relay 312 is engaged can be constrained and reduced, thereby reducing the design margin, space waste, and occupied space of the power distribution device 30, and facilitating the miniaturization and lightweighting of the power distribution device 30.

[0116] Referring to FIG. 4 , FIG. 7 , and FIG. 8 , in some embodiments of the present application, a first gap 322 is defined between the relay 312 and at least a portion of the inner wall 3211 .

[0117] It should be noted that the inner wall 3211 of the accommodating chamber 321 includes the various walls that participate in enclosing and forming the accommodating chamber 321. The relay 312 can form a first gap 322 with one wall. The relay 312 can also form a first gap 322 with at least two walls. Of course, the first gaps 322 between the relay 312 and different walls can be set the same or different. The wall that has the first gap 322 with the relay 312 can partially abut against the relay 312 to form the first gap 322 with the relay 312, or it can form the first gap 322 with the relay 312 through the entire wall (i.e., the entire wall).

[0118] By adopting the above solution, during assembly of the relay 312 when it is removed from and placed in the accommodating cavity 321, the first gap 322 between the relay 312 and at least a portion of the inner wall 3211 creates an assembly margin, providing assembly space. This facilitates smooth removal and placement of the relay 312 into the accommodating cavity 321, thereby improving the ease and efficiency of assembly between the relay 312 and the accommodating cavity 321. Furthermore, when the relay 312 is already placed in the accommodating cavity 321, the first gap 322 between the relay 312 and at least a portion of the inner wall 3211 creates a connection space, allowing the relay 312 and the accommodating cavity 321 to be connected at the connection space, thereby facilitating stable and reliable fixing of the relay 312 to the accommodating cavity 321.

[0119] Referring to FIG. 4 , FIG. 7 , and FIG. 8 , in some embodiments of the present application, the first gap 322 is filled with structural adhesive (not shown in the figures), and the relay 312 is bonded to at least a portion of the inner wall 3211 by the structural adhesive.

[0120] It should be noted that when relay 312 is placed in accommodating cavity 321, first gap 322 can be filled with structural adhesive to secure relay 312 to corresponding portions of inner wall 3211. Structural adhesive refers to an adhesive suitable for bonding strong structural components. First gap 322 can be filled entirely or partially with structural adhesive.

[0121] By adopting the above solution, when relay 312 is already placed in accommodating cavity 321, a connecting space is formed through the first gap 322 between relay 312 and at least a portion of inner wall 3211. This gap can be filled with structural adhesive, thereby reliably and firmly bonding relay 312 to the corresponding portion of inner wall 3211. This effectively ensures and enhances the securing effect of accommodating cavity 321 on relay 312, thereby stabilizing the installation state of relay 312 in accommodating cavity 321, particularly when relay 312 vibrates during operation. Furthermore, because first gap 322 can be filled with structural adhesive, it does not constitute excess space in accommodating cavity 321 after accommodating relay 312. This reduces design margins, space waste, and space usage of power distribution device 30, thereby facilitating miniaturization and lightweighting of power distribution device 30.

[0122] In some embodiments, while ensuring that the first gap 322 meets the requirements for assembly space and connection space, the thickness of the first gap 322 can be reduced accordingly. In particular, the thickness of the first gap 322 can be made less than the thickness of each side wall of the housing structure of the housing relay of an existing power distribution device. For example, assuming that the thickness of each side wall of the housing structure of the housing relay of an existing power distribution device is approximately 2.0 mm, the thickness of the first gap 322 can be greater than 0 mm and less than 2.0 mm, for example, 0.5 mm, 1.0 mm, 1.5 mm, 1.7 mm, 1.9 mm, etc. The thickness of the first gap 322 refers to the minimum distance between the corresponding wall of the first gap 322 and the corresponding side of the relay 312. Based on this, the power distribution device 30 provided in this embodiment can save a certain amount of space margin compared to existing power distribution devices, thereby reducing the design margin, space waste, and occupied space of the power distribution device 30, and facilitating the miniaturization and lightweighting of the power distribution device 30.

[0123] Please refer to FIG. 5 , FIG. 7 , and FIG. 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 .

[0124] It should be noted that the inner wall 3211 of the accommodating cavity 321 includes the various walls that enclose and form the accommodating cavity 321. The protruding structure 323 may be provided on one of the walls, or on at least two walls. In particular, the protruding structure 323 may be provided on the wall that abuts the relay 312. The inner wall 3211 may abut the relay 312 via some or all of the protruding structures 323.

[0125] By adopting the above solution, the inner wall 3211 of the accommodating chamber 321 can be provided with a raised structure 323, so that at least a portion of the raised structure 323 abuts against the relay 312, thereby ensuring and enhancing the limiting and positioning effect of the relay 312. Based on this, the installation state of the relay 312 in the accommodating chamber 321 can be stabilized, and in particular, the state of the relay 312 in the accommodating chamber 321 can be reliably stabilized when the relay 312 vibrates during operation, thereby reducing the risk of the relay 312 falling out of the accommodating chamber 321, ensuring and improving the installation stability and operational 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 be correspondingly reduced. Based on this, the friction between the relay 312 and the inner wall 3211 can be effectively reduced during the assembly of the relay 312 in the accommodating chamber 321, thereby improving the assembly convenience between the relay 312 and the accommodating chamber 321.

[0126] Furthermore, when the inner wall 3211 abuts the relay 312 via at least a portion of the raised structure 323, a first gap 322 can be formed between the inner wall 3211 and the relay 312 in the area where the raised structure 323 is not provided. Therefore, by adopting the above solution, the inner wall 3211 can also abut the relay 312 via a portion (i.e., at least a portion of the raised structure 323), thereby forming the first gap 322 with the relay 312 in the area where the raised structure 323 is not provided. Based on this, during the assembly of the relay 312 when it is placed in the accommodating cavity 321, the first gap 322 can create an assembly margin, providing assembly space, thereby improving the assembly convenience between the relay 312 and the accommodating cavity 321. Furthermore, when the relay 312 is already placed in the accommodating cavity 321, the first gap 322 can form a connecting space, thereby facilitating the stable and reliable fixing of the relay 312 to the accommodating cavity 321.

[0127] Referring to Figures 5, 7, and 8, in some embodiments of the present application, the accommodating chamber 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 supports the relay 312, and the top wall 3213 is disposed opposite the bottom wall 3212. The first side wall 3214 is disposed opposite the second side wall 3215. The third side wall 3216 is disposed opposite the opening 3217.

[0128] It should be noted that the accommodating chamber 321 has an opening 3217, through which the relay 312 can be placed and taken into 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, which form the other five sides of the accommodating chamber 321 except for the opening 3217. Among them, the bottom wall 3212 refers to the wall primarily used to support the relay 312. The top wall 3213 refers to the wall arranged opposite the bottom wall 3212, which is used to cooperate with the bottom wall 3212 to limit the position of the relay 312. The third side wall 3216 refers to the wall arranged opposite the opening 3217, which is used to limit and position the relay 312 in a direction away from the opening 3217, and in particular to prevent the relay 312 from escaping 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 .

[0129] By adopting the above-mentioned 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 perform multi-directional limiting and wrapping protection on the relay 312 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, thereby ensuring and improving the installation stability of the relay 312 in the accommodating cavity 321, and ensuring and improving the accommodating, limiting, fixing and protecting effects of the accommodating cavity 321 on the relay 312.

[0130] Please refer to Figures 6, 7 and 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 is provided with a protruding structure 323.

[0131] It should be noted that the protruding structures 323 may be provided on some or all of the bottom wall 3212, top wall 3213, first side wall 3214, second side wall 3215, and third side wall 3216. Walls provided with protruding structures 323 may abut against the relay 312 through at least a portion of the protruding structures 323, or may form a first gap 322 with the relay 312 through areas not provided with the protruding structures 323.

[0132] By adopting the above solution, during assembly of the relay 312 when it is removed from and placed in the accommodating cavity 321, at least portions of the bottom wall 3212, top wall 3213, first side wall 3214, second side wall 3215, and third side wall 3216 can reduce their contact area with the relay 312 due to the provided protrusions 323, thereby reducing friction between them and the relay 312. Furthermore, a first gap 322 can be formed between the area without the protrusions 323 and the relay 312, thereby creating an assembly margin through the first gap 322 and providing assembly space. This improves the ease of assembly between the relay 312 and the accommodating cavity 321.

[0133] By adopting the above solution, when the relay 312 is placed in the accommodating cavity 321, at least part of the bottom wall 3212, top wall 3213, first side wall 3214, second side wall 3215, and third side wall 3216 can abut against the relay 312 via at least part of the protruding structure 323, thereby ensuring and enhancing the limiting and positioning effect of the relay 312. Furthermore, a connecting space can be formed through the first gap 322, thereby stably and reliably fixing the relay 312 in the accommodating cavity 321. This improves the installation stability of the relay 312 in the accommodating cavity 321.

[0134] Please refer to Figures 6, 7 and 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 extends in a direction away from the opening 3217.

[0135] 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 protrusion structures 323 provided are first protrusions 3231. The first protrusions 3231 extend in a direction away from the opening 3217, that is, the first protrusions 3231 extend in a direction close to the third side wall 3216.

[0136] By adopting the above solution, during assembly of the relay 312 when it is removed from and placed in the accommodating cavity 321, at least portions of the bottom wall 3212, top wall 3213, first side wall 3214, and second side wall 3215 can, via the first protrusion 3231 extending away from the opening 3217, conform to the direction of assembly and disassembly of the relay 312 from the accommodating cavity 321, thereby reducing friction with the relay 312, particularly in directions other than the assembly and disassembly direction. This improves the ease and efficiency of assembly between the relay 312 and the accommodating cavity 321 while ensuring the effective position restriction of the relay 312.

[0137] 6 , 7 , and 8 , in some embodiments of the present application, the protrusion structure 323 provided on the third sidewall 3216 is a second protrusion 3232 . There are at least two second protrusions 3232 , and the second protrusions 3232 are cross-connected.

[0138] It should be noted that if the third sidewall 3216 is provided with a protrusion structure 323, the protrusion structure 323 is a second protrusion 3232. There are at least two second protrusions 3232. The second protrusions 3232 are cross-connected, that is, the second protrusions 3232 extend in different directions, allowing the second protrusions 3232 to be cross-connected, for example, vertically and horizontally.

[0139] When the second protrusions 3232 are cross-connected, cells may be formed between the second protrusions 3232 . 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.

[0140] By adopting the above solution, when relay 312 is placed in accommodating cavity 321, third sidewall 3216 can abut relay 312 via at least some of the cross-connected second protrusions 3232, thereby enhancing the position limiting and positioning of relay 312. Furthermore, first gaps 322 can be formed by the cells between the second protrusions 3232, thereby forming a connecting space through the first gaps 322. This can thereby improve the installation stability of relay 312 in accommodating cavity 321.

[0141] 4 , 5 , and 6 , in some embodiments of the present application, the accommodating chamber 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 .

[0142] 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 into 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 arranged 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.

[0143] By adopting the above solution, when the relay 312 is placed in the accommodating cavity 321 and the relay 312 is connected to the inner wall 3211 of the accommodating cavity 321, the cover 33 connected to the base 32 can be used to seal the opening 3217 of the accommodating cavity 321. Based on this, on the one hand, the cover 33 and the base 32 can jointly provide comprehensive protection for the relay 312 in the accommodating cavity 321, thereby ensuring and improving the protection of the relay 312 by the power distribution device 30, and ensuring and extending the service life of the relay 312 and the power distribution device 30. On the other hand, the cover 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 and improving the installation stability and reliability of the relay 312 by the power distribution device 30. 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.

[0144] Please refer to FIG. 4 , FIG. 5 , and FIG. 6 . In some embodiments of the present application, the cover member 33 has a through hole 331 therethrough for allowing the contact 3125 of the relay 312 to pass through.

[0145] It should be noted that the relay 312 includes a contact 3125, which is used to connect to the high-voltage circuit. By closing or opening the contact 3125, the on / off of the high-voltage circuit can be controlled.

[0146] When relay 312 is positioned with its contacts 3125 facing toward opening 3217, cover 33 is provided with a through hole 331 extending through cover 33 in a direction away from accommodating cavity 321. Through hole 331 allows contact 3125 of relay 312 to pass through, exposing contact 3125 from cover 33 and connecting to the high-voltage circuit. Specifically, through hole 331 allows at least one contact 3125 to pass through.

[0147] By adopting the above solution, when relay 312 is positioned with its contacts 3125 facing toward opening 3217 and cover 33 blocks opening 3217 of accommodating chamber 321, cover 33 can be provided with through-hole 331 for contact 3125 of relay 312 to pass through, thereby allowing contact 3125 of relay 312 to be exposed from cover 33 and connected to the high-voltage circuit to control the on / off function of the high-voltage circuit. This ensures that both cover 33 and relay 312 function effectively, thereby ensuring the performance of power distribution device 30.

[0148] Of course, in other embodiments, the relay 312 may have its contacts 3125 disposed toward the third side wall 3216 . In this case, a corresponding hole structure may be provided on the third side wall 3216 for the contacts 3125 of the relay 312 to pass through.

[0149] Please refer to Figures 4, 5, and 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.

[0150] It should be noted that, in some cases, the relay 312 is provided with at least two contacts 3125 , so that each contact 3125 can be closed or opened respectively to jointly control the on / off of the high-voltage circuit.

[0151] 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, such that the through-holes 331 are provided in a one-to-one correspondence with the contacts 3125 of the relay 312, and each through-hole 331 allows each contact 3125 of the relay 312 to pass through on a one-to-one basis. In other embodiments, the number of through-holes 331 is less than the number of contacts 3125 of the relay 312. In this case, each through-hole 331 corresponds to at least one contact 3125, and some through-holes 331 correspond to at least two contacts 3125, and each through-hole 331 allows the corresponding contact 3125 to pass through.

[0152] By adopting the above solution, when the relay 312 is positioned with its contacts 3125 facing 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 can be exposed through the through-hole 331 in a one-to-one or one-to-many manner. Based on this, the respective functions of the cover 33 and the relay 312 can be taken into account, and each contact 3125 of the relay 312 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 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 circuits and reducing the safety hazards of the distribution device 30.

[0153] Please refer to FIG. 4 , FIG. 5 , and FIG. 6 . In some embodiments of the present application, the cover 33 is provided with a barrier structure 332 for separating two adjacent contacts 3125 of the relay 312 .

[0154] It should be noted that, in some cases, the relay 312 is provided with at least two contacts 3125 , so that each contact 3125 can be closed or opened respectively to jointly control the on / off of the high-voltage circuit.

[0155] On this basis, the cover 33 may be provided with at least one barrier structure 332. The barrier structure 332 is comprised of an insulating material and possesses insulating properties, thereby providing insulation. When each contact 3125 of the relay 312 passes through the corresponding through-hole 331 of the cover 33, the barrier structure 332 insulates and separates the contacts 3125 on either side, thereby increasing the creepage distance between the contacts 3125 on either side of the barrier structure 332 and improving the insulation between the contacts 3125 on either side of the barrier structure 332. At least one barrier structure 332 may be provided between each pair of adjacent contacts 3125.

[0156] The barrier structure 332 may be in the shape of, but not limited to, a plate.

[0157] 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 .

[0158] The barrier structure 332 may be an integrally formed component of the cover 33 or a split-formed component.

[0159] By adopting the above solution, when each contact 3125 of the relay 312 passes through the corresponding through-hole 331 of the cover 33, the cover 33 can insulate and separate the two adjacent contacts 3125 via the barrier structure 332 provided between the two adjacent contacts 3125. This effectively increases the creepage distance between the two adjacent contacts 3125 and improves the insulation between the two adjacent contacts 3125, thereby reducing the risk of short circuits and alleviating safety hazards of the power distribution device 30.

[0160] 4 , 5 , and 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 facing away from the accommodating cavity 321 and is used to shield the contacts 3125 of the relay 312 .

[0161] It should be noted that the shielding member 34 is a housing 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 facing away from the accommodating chamber 321. The shielding member 34 can be, but is not limited to, a plate-shaped. 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, so as to ensure that the contacts 3125 of the relay 312 are not exposed to the outside of the power distribution device 30. The shielding member 34 can optionally be connected to the base 32 to stabilize and fix the installation position and installation state of the shielding member 34. The shielding member 34 can shield each cover member 33 and the contacts 3125 of 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-to-one.

[0162] By adopting the above solution, while ensuring the respective functions of the cover 33 and the relay 312, the shield 34, located on the side of the cover 33 facing away from the accommodating cavity 321, shields the cover 33 and the contacts 3125 of the relay 312 exposed through the through hole 331 of the cover 33, particularly protecting the contacts 3125 of the relay 312 from being exposed outside the power distribution device 30. Thus, on the one hand, the shield 34 protects the cover 33 and the corresponding contacts 3125 of the relay 312, thereby ensuring and extending the service life of the relay 312 and the power distribution device 30. On the other hand, the shield 34 reliably prevents hands or external devices from contacting the contacts 3125 of the relay 312, thereby reducing safety hazards of the power distribution device 30 and improving its performance.

[0163] Please refer to Figures 4, 5 and 6. In 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.

[0164] It should be noted that at least one side of the cover member 33 is provided with a snap 333. For example, in some embodiments, the snap 333 is provided on two opposing sides of the cover member 33. The cover member 33 can be snap-connected to the inner wall 3211 of the accommodating cavity 321 via the snap 333, thereby conveniently and quickly achieving a detachable connection to the base 32.

[0165] 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 near the opening 3217, and the snap 333 of the cover 33 is correspondingly snap-connected to the inner wall 3211 of the accommodating cavity 321, thereby conveniently and quickly achieving a detachable connection between the cover 33 and the base 32. Based on this, the convenience and reliability of the connection between the cover 33 and the base 32 can be guaranteed and improved, and the cover 33 can be guaranteed to accurately and reliably block the opening 3217 of the accommodating cavity 321.

[0166] Of course, in other embodiments, the cover 33 may be connected to the base 32 by bolts or the like.

[0167] Please refer to FIG. 4 , FIG. 5 , and FIG. 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.

[0168] It should be noted that the base 32 is provided with at least two accommodating cavities 321. The accommodating cavities 321 can be flexibly arranged on the base 32. The number of relays 312 provided 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 on a one-to-one basis.

[0169] By adopting the above solution, the base 32 can securely mount at least two relays 312 in a one-to-one manner through at least two accommodating cavities 321. This ensures that the base 32 can, through each accommodating cavity 321, perform its functions of accommodating, limiting, securing, and protecting each relay 312 fixedly mounted therein. Furthermore, the housing structure of at least two relays 312 can be omitted, thereby significantly compacting the overall layout of the base 32 and each relay 312, further facilitating the integration, miniaturization, lightweighting, and simplification of the power distribution device 30.

[0170] 4 , 5 , and 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 to separate the contacts 3125 of the two corresponding relays 312 .

[0171] 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.

[0172] Based on this, the base 32 can be provided with an insulating structure 324 between the two adjacent accommodating cavities 321. At least one insulating structure 324 can be provided between each group of two adjacent accommodating cavities 321. The insulating structure 324 comprises an insulating material and has insulating properties, thereby providing an insulating effect. The insulating structure 324 can insulate and separate the accommodating cavities 321 on either side thereof, and in particular, can insulate and separate the two relays 312 correspondingly mounted in the two accommodating cavities 321, and in particular, can insulate and separate the contacts 3125 of the two relays 312, thereby improving the insulation between the contacts 3125 of the relays 312 located on opposite sides of the insulating structure 324.

[0173] The structure of the insulating structure 324 can be designed in various ways. For example, the insulating structure 324 can be a frame-shaped structure connected end to end.

[0174] The insulating structure 324 is an integrally formed component of the base 32 , and may also be a separately formed component.

[0175] By adopting the above solution, the base 32 can be provided with an insulating structure 324 between two adjacent accommodating cavities 321. The insulating structure 324 can insulate and separate the two adjacent accommodating cavities 321. This, in turn, can insulate and separate the two relays 312 installed in the two accommodating cavities 321, and in particular, the contacts 3125 of the two relays 312. This effectively improves the insulation between the contacts 3125 of the two adjacent housingless relays, reduces the risk of short circuits, and improves the reliability and safety of the power distribution device 30.

[0176] Referring to Figures 4, 9, and 10, in some embodiments of the present application, a power distribution device 30 includes an electrical component 31 and a cover 35. The electrical component 31 includes a relay 312. At least two electrical components 31 are provided, each mounted on a base 32. The cover 35 is provided on the same side of each electrical component 31 and is connected to the base 32. A circuit element 36 is provided on the side of the cover 35 facing each electrical component 31 for electrically connecting to each electrical component 31.

[0177] It should be noted that the electrical device 31 can refer to any electrical component in the power distribution device 30. There are at least two electrical devices 31. These may include a relay 312, a current sensor 313, a fuse 314, a pre-charge resistor 315, and the like. Each electrical device 31 is mounted on the base 32 and maintains a stable mounting position and state relative to the base 32.

[0178] Relay 312 is an electrical control device that causes a predetermined step change in the controlled quantity in the electrical output circuit when the change in the input quantity (stimulation quantity) reaches a specified requirement. Relay 312 may include a main positive relay 3121, a main negative relay 3122, and a pre-charge relay 3123.

[0179] Current sensor 313 is a detection device that senses the measured current and, according to a specific pattern, converts the sensed information into an electrical signal or other desired information output that meets certain standards, thereby satisfying requirements for information transmission, processing, storage, display, recording, and control. Current sensor 313 may include a shunt 3131, a Hall current sensor 3132, and the like.

[0180] 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.

[0181] 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 excessive current or voltage) or short-circuited. In some embodiments, insurance 314 can be used as a fuse.

[0182] The pre-charging resistor 315 is a component used to limit the magnitude 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 components such as the relay 312.

[0183] It should also be noted that the cover 35 is the housing component of the power distribution device 30 that covers the base 32 and possesses a certain degree of structural strength and rigidity. The cover 35 is connected to one side of the base 32 and stabilizes its installation position and state relative to the base 32. The connection between the cover 35 and the base 32 can be detachable or fixed.

[0184] The cover 35 and base 32 may together enclose an interior space. At least one electrical component 31 may be disposed within the interior space. For example, in some embodiments, a pre-charge relay 3123 and a pre-charge resistor 315 may be mounted within the space enclosed by the cover 35 and base 32.

[0185] The cover 35 is located on the same side of each electrical component 31. A circuit element 36 is provided on the side of the cover 35 facing each electrical component 31. The circuit element 36 can be used to electrically connect to each electrical component 31 to establish the required electrical connection relationship between the electrical components 31 and ensure that the power distribution device 30 can perform its required functions.

[0186] By adopting the above solution, by mounting each electrical component 31 on the base 32, the layout of each electrical component 31 can be easily planned, optimized, and compacted, thereby facilitating a compact overall layout of the base 32 and each electrical component 31, and promoting the integration, miniaturization, lightweighting, and simplification of the power distribution device 30. Furthermore, the base 32, in combination with the cover 35 connected thereto, can provide reliable protection for each electrical component 31 mounted on the base 32, thereby ensuring and extending the service life of each electrical component 31 and the power distribution device 30.

[0187] By adopting the above solution, by placing the integrated circuit element 36 on the side of the cover 35 facing the electrical components 31, the cover 35 can provide better protection for the circuit element 36, thereby reducing the risk of damage to the circuit element 36 and thus ensuring and extending the service life of the circuit element 36. Furthermore, when the cover 35 is assembled to the base 32, the precise alignment and electrical connection between the circuit element 36 and the electrical components 31 can be completed simultaneously, thereby reliably establishing the required electrical connection relationship between the electrical components 31 through the circuit element 36, ensuring that the power distribution device 30 can achieve the required function. Furthermore, the number of assembly steps can be reduced, the connection convenience and reliability between the circuit element 36 and the electrical components 31 can be improved, and the assembly convenience and efficiency of the power distribution device 30 can be improved.

[0188] Referring to Figures 9 and 10 , in some embodiments of the present application, the gap between an electrical device 31 and an adjacent electrical device 31 is a second gap 316. The electrical device 31 is provided with a first connector 317. The first connector 317 includes a first connecting portion 3171 for detachably connecting to the circuit element 36. The first connecting portion 3171 is located outside each second gap 316 of the corresponding electrical device 31.

[0189] It should be noted that the electrical components 31 can be arranged flexibly. For any electrical component 31, the gap between it and the adjacent electrical component 31 can serve as the second gap 316. Of course, any electrical component 31 can have at least two second gaps 316 when it is surrounded by at least two adjacent electrical components 31. The sizes of the second gaps 316 of the same electrical component 31 can be the same or different, and the sizes of the second gaps 316 of different electrical components 31 can be the same or different.

[0190] It should also be noted that the electrical device 31 is provided with at least one first connector 317, which is used to electrically connect 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 for removable mechanical and electrical connection to the circuit element 36. The first connecting portion 3171 can achieve removable mechanical and electrical connection to the circuit element 36 through, but is not limited to, plugging, snapping, or elastic abutment.

[0191] 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. The first connection portion 3171 is located outside each second gap 316 of the electrical device 31. Based on this, on the one hand, by arranging the first connection portion 3171 outside each second gap 316 of the corresponding electrical device 31, the connection operation of the first connection portion 3171 can be performed 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 part 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 part 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 helping to compact the overall layout of each electrical device 31.

[0192] By adopting the above solution, when the gap between an electrical device 31 and an adjacent electrical device 31 is defined as a second gap 316, by arranging the first connecting portion 3171 outside each second gap 316 of the corresponding electrical device 31, on the one hand, the connection operation of the first connecting portion 3171 can be performed 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 connecting portion 3171. On the other hand, each second gap 316 of the electrical device 31 does not need to provide space for accommodating the first connecting portion 3171, nor does it need to provide space for connecting and disconnecting the first connecting portion 3171. This facilitates the reduction of the gap between the electrical device 31 and the adjacent electrical device 31 as needed, which is conducive to compacting the overall layout of the electrical devices 31, thereby facilitating the formation of an integrated, compact, and miniaturized power distribution device 30.

[0193] Referring to Figures 9 and 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, with the connector port 3611 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 component 31 for removable connection thereto.

[0194] It should be noted that connector 361 is a terminal for connecting to components such as battery cell 10 (shown in FIG3 ). At least a portion of connector 361 is embedded within cover 35 to ensure stable and secure installation of connector 361 relative to cover 35. A socket 3611 of connector 361 is exposed outside cover 35, allowing connection terminals of components such as battery cell 10 to be electrically connected to connector 361 by plugging into socket 3611.

[0195] 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 for low-voltage control. Of course, in other embodiments, the power distribution device 30 may be provided with only one connector 361, which integrates both high-voltage sampling and low-voltage control functions. Of course, in other embodiments, the power distribution device 30 may be provided with three or more connectors 361, and the functions of each connector 361 may be the same or different.

[0196] It should also be noted that, depending on the number and locations 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 extends toward the electrical device 31 to be connected. The extension path of the conductive connecting portion 3622 can be straight or curved.

[0197] At one end of the conductive connection portion 3622 proximal to the corresponding electrical device 31, the second connector 362 can be bent to form a second connection portion 3621. The conductive connection portion 3622 and the corresponding second connection portion 3621 can be integrally connected or separately connected. The second connection portion 3621 is bent toward the corresponding electrical device 31 for removable mechanical and electrical connection with the first connection portion 3171 of the corresponding electrical device 31. The second connection portion 3621 can achieve removable mechanical and electrical connection with the corresponding first connection portion 3171 through, but not limited to, plugging, snapping, or elastic abutment.

[0198] By adopting the above solution, when each electrical device 31 is installed within the power distribution device 30, the conductive connection portion 3622 of the second connector 362 can be connected to the connector 361. Furthermore, the second connection portion 3621 of the second connector 362 can be removably connected to the first connection portion 3171 of the corresponding electrical device 31, thereby conveniently, quickly, and reliably achieving electrical connection between the connector 361 and the corresponding electrical device 31. Furthermore, by exposing the socket 3611 of the connector 361 outside the power distribution device 30, electrical connection with components such as the battery cell 10 can be facilitated via the socket 3611. Thus, while the power distribution device 30 integrates and protects the connector 361 and the electrical devices 31, external components such as the battery cell 10 can be easily connected via the connector 361. This facilitates the integration of the electrical devices 31 and the connector 361, enabling functions such as high-voltage sampling and low-voltage control for external components such as the battery cell 10.

[0199] Referring to FIG. 9 and 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).

[0200] It should be noted that the conductive connection portion 3622 refers to the portion of the second connection member 362 that is connected between the connector 361 and its second connection portion 3621. The conductive connection portion 3622 can be, but is not limited to, a conductive sheet, an FPC, a PCB, and the like.

[0201] By adopting the above scheme, the second connecting member 362 can replace the wiring harness through the conductive connecting part 3622 to realize 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 connecting member 362, and ensuring and improving the reliability and performance of the distribution device 30.

[0202] Please refer to FIG. 9 and FIG. 10 . In some embodiments of the present application, the conductive connection portion 3622 is embedded in the cover 35 .

[0203] 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 35 , so that the installation position and installation state of the second connection member 362 relative to the cover 35 are stable and firm.

[0204] By adopting the above solution, the cover 35 can provide an excellent protective effect for the portion in which the conductive connection portion 3622 is embedded, thereby reducing the risk of interference, wear, and damage to the conductive connection portion 3622, and extending the service life of the conductive connection portion 3622 and the circuit element 36. Furthermore, because the conductive connection portion 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.

[0205] Please refer to Figures 4, 9 and 10. In some embodiments of the present application, the cover 35, the connector 361 and the conductive connection portion 3622 are an integrated structure.

[0206] It should be noted that, based on the settings of "the connector 361 is embedded in the cover body 35" and "the conductive connection part 3622 is embedded in the cover body 35", the cover body 35, the connector 361 and the conductive connection part 3622 can form an integrated structure through, but not limited to, one-piece injection molding, 3D printing and other one-piece molding processes.

[0207] 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, wear, etc. of the conductive connecting part 3622 can be reduced.

[0208] 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 also be simplified. 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.

[0209] Referring to Figures 3, 9, and 11, in some embodiments of the present application, a power distribution device 30 includes an electrical component 31 and an insulating heat-conducting member 37. The electrical component 31 includes a relay 312. The electrical component 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 component 31, and the other side of the insulating heat-conducting member 37 is connected to a heat exchanger 40. The insulating heat-conducting member 37 is used to transfer heat from the electrical component 31 to the heat exchanger 40.

[0210] It should be noted that electrical device 31 may refer to any electrical component in power distribution device 30. Electrical device 31 may include relays 312, current sensors 313, fuses, fuses 314, pre-charge resistors 315, etc. Relays 312 may include a main positive relay 3121, a main negative relay 3122, a pre-charge relay 3123, etc. Current sensors 313 may include a shunt 3131, a Hall effect current sensor 3132, etc. In some embodiments, fuses 314 may function as fuses.

[0211] The electrical component 31 can be mounted on the base 32. Based on this, the electrical component 31 can be mounted and protected by the base 32, and the mounting position and state of the electrical component 31 relative to the base 32 can be stabilized and secure. This can help ensure and extend the service life of the electrical component 31. This allows the electrical components 31 to maintain a stable position and state relative to each other, establishing the required electrical connection relationship between them. Furthermore, when the mounting position and state of the insulating thermal conductive member 37 relative to the base 32 are stable, the electrical component 31 can be accurately and stably aligned with the insulating thermal conductive member 37, allowing the electrical component 31 and the insulating thermal conductive member 37 to accurately and reliably establish an insulating thermal connection relationship.

[0212] 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 device 31. The heat exchanger 40 has excellent thermal conductivity, enabling rapid and reliable heat exchange with components such as the electrical device 31 and the insulating heat conductive member 37, while rapidly dissipating heat. For example, the heat exchanger 40 may be the thermal management component 41, the battery 1 housing 20, the vehicle body, and so on.

[0213] It should also be noted that the insulating heat conductive member 37 is at least used to transfer 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.

[0214] The insulating heat-conducting member 37 comprises a heat-conducting material and has thermal conductivity, enabling it to perform a heat-conducting function, i.e., to perform heat exchange and heat conduction functions. One side of the insulating heat-conducting member 37 is thermally connected to at least a portion of the electrical component 31, while the other side of the insulating heat-conducting member 37 is thermally connected to the heat exchange member 40. This facilitates quick and reliable heat exchange between the electrical component 31 and the heat exchange member 40 via the insulating heat-conducting member 37. In particular, the insulating heat-conducting member 37 facilitates rapid heat conduction of the heat generated by the electrical component 31 to the heat exchange member 40. This effectively ensures and improves the heat dissipation performance and efficiency of the power distribution device 30 for the electrical component 31, reduces the risk of thermal failure of the electrical component 31, and ensures and extends the service life of the electrical component 31 and the power distribution device 30.

[0215] The insulating heat-conducting member 37 also includes an insulating material with insulating properties, thereby providing insulation. Due to the insulating properties of the insulating heat-conducting member 37, the electrical component 31 and the heat exchanger 40 are insulated by the insulating heat-conducting member 37, thereby preventing short circuits between the electrical component 31, the insulating heat-conducting member 37, and the heat exchanger 40. This reduces the risk of high-voltage short circuits and sparks between the electrical component 31, the insulating heat-conducting member 37, and the heat exchanger 40.

[0216] The insulating heat-conducting member 37 may be a single-layer structure or a multi-layer structure.

[0217] The shape of the insulating heat-conducting member 37 can be variously designed, such as a cuboid, a cylinder, etc.

[0218] Among them, on the basis of ensuring the thermal conductivity and insulation between the insulating thermal conductive part 37 and the electrical component 31, the connection method between the insulating thermal conductive part 37 and the electrical component 31 can be flexibly designed, for example, abutment, bonding, bolt locking connection, etc. can be used.

[0219] Among them, on the basis of ensuring the thermal conductivity and insulation between the insulating heat conductive part 37 and the heat exchange part 40, the connection method between the insulating heat conductive part 37 and the heat exchange part 40 can be flexibly designed, for example, abutment, bonding, bolt locking connection, etc. can be adopted.

[0220] By adopting the above solution, the power distribution device 30 can be insulated and thermally connected to the electrical component 31 through the insulating thermal conductive member 37, and can also 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 component 31 and the heat exchanger 40 can be insulated by the insulating thermal conductive member 37, thereby basically preventing short circuits between the electrical component 31, the insulating thermal conductive member 37, and the heat exchanger 40, and effectively reducing the risk of high-voltage short circuits and sparks between the electrical component 31, the insulating thermal conductive member 37, and the heat exchanger 40. On the other hand, it is convenient to exchange heat and conduct heat between the electrical component 31 and the heat exchange component 40 through the insulating heat conductive component 37, especially to conduct the heat generated by the electrical component 31 to the heat exchange component 40 through the insulating heat conductive component 37, so as to diffuse and conduct the heat generated by the electrical component 31 to the outside of the distribution device 30. In this way, the heat dissipation performance and heat dissipation efficiency of the distribution device 30 to the electrical component 31 can be effectively guaranteed and improved, the risk of thermal failure of the electrical component 31 can be effectively reduced, and the service life of the electrical component 31 and the distribution device 30 can be effectively guaranteed and extended.

[0221] 11 , 12 , and 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 , which is connected to the insulating heat-conducting member 37 .

[0222] It should be noted that the conductive structure 311 is a component used to achieve electrical connection of the electrical device 31. The conductive structure 311 may be sheet-shaped and may include a bar, a busbar, a conductive sheet, etc. The bar may include a copper bar, an aluminum bar, etc.

[0223] The conductive structure 311 has a heat-conducting surface 3111, which can be thermally connected to the insulating heat-conducting member 37 in a form-fitting manner. This configuration allows the conductive structure 311 of the electrical device 31, which generates a large amount of heat during operation, to be directly and thermally connected to the insulating heat-conducting member 37 via the heat-conducting surface 3111. Based on this, the thermal 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 (as shown in FIG. 3 ) via the insulating heat-conducting member 37. This effectively ensures and improves the heat dissipation performance and heat dissipation efficiency of the power distribution device 30 to the electrical device 31, effectively reduces the risk of thermal failure of the electrical device 31, and effectively ensures and extends the service life of the electrical device 31 and the power distribution device 30.

[0224] Furthermore, based on the insulating properties of the insulating heat-conducting member 37, the conductive structure 311 can be insulated from the insulating heat-conducting member 37. This arrangement can substantially prevent a short circuit between the conductive structure 311 and the insulating heat-conducting member 37, thereby reducing the risk of a high-voltage short circuit and spark between the conductive structure 311 and the insulating heat-conducting member 37.

[0225] By adopting the above solution, 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 insulation characteristics of the insulating heat-conducting part 37, the conductive structure 311 and the insulating heat-conducting part 37 can be insulated, thereby basically avoiding short circuit between the conductive structure 311 and the insulating heat-conducting part 37, and reducing the risk of high-voltage short circuit and spark 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-conducting part 37 via the heat-conducting surface 3111. Based on this, the thermal contact area between the conductive structure 311 and the insulating heat-conducting 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 conducted to the heat exchanger 40 through the insulating heat-conducting part 37. 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.

[0226] Of course, in other embodiments, the electrical device 31 can be connected to the insulating thermal conductive member 37 in an insulated and thermally conductive manner through a non-sheet conductive structure 311 ; or, the electrical device 31 can be connected to the insulating thermal conductive member 37 in an insulated and thermally conductive manner through a portion other than the conductive structure 311 .

[0227] Referring to Figures 11, 12, and 13, in 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.

[0228] It should be noted that the term "electrical component" refers to a component that is electrically connected to the electrical device 31. The electrical component may be another electrical device 31, or may be 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.

[0229] Conductive structure 311 is a component used to electrically connect a corresponding electrical device 31 to a corresponding electrical component. The corresponding electrical device 31 refers to the electrical device 31 that includes and is electrically connected to the conductive structure 311. The corresponding electrical component refers to another component, other than the corresponding electrical device 31, to which the conductive structure 311 is electrically connected. In other words, the corresponding electrical device 31 and the corresponding electrical component are the two components connected by the conductive structure 311.

[0230] It should also be noted that the conductive structure 311 is a sheet-like structure. The conductive structure 311 includes a first conductive portion 3112, a second conductive portion 3113, and a third conductive portion 3114 connected in sequence. Among them, the first conductive portion 3112 is connected to the corresponding electrical component 31 and extends toward the side close to the insulating heat-conducting member 37. The third conductive portion 3114 is connected to the corresponding electrical component and extends toward the side close to the insulating heat-conducting member 37. The second conductive portion 3113 is bent and connected to one end of the first conductive portion 3112 close to the insulating heat-conducting member 37, and one end of the third conductive portion 3114 close to the insulating heat-conducting member 37. That is, the second conductive portion 3113 is connected from one end of the first conductive portion 3112 close to the insulating heat-conducting member 37 to one end of the third conductive portion 3114 close to the insulating heat-conducting member 37, and the second conductive portion 3113 is arranged at an angle to the first conductive portion 3112, and the second conductive portion 3113 is arranged at an angle to the third conductive portion 3114.

[0231] Depending on the layout of the corresponding electrical device 31 and the corresponding electrical component, as well as 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, and so on. In other words, the overall shape of the conductive structure 311 can be flexibly designed as needed.

[0232] 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.

[0233] It should also be noted that the second conductive portion 3113 is laid on the side of the base 32 facing the insulating thermal conductive member 37. That is, the second conductive portion 3113 is arranged on the side of the base 32 facing the insulating thermal conductive member 37 in a posture that is "substantially parallel to the side of the base 32 facing the insulating thermal conductive member 37." In this case, on the side of the second conductive portion 3113 facing the insulating thermal conductive member 37, the second conductive portion 3113 can form the above-mentioned thermal conductive surface 3111 for thermally conductive connection with the insulating thermal conductive member 37 in a close-fitting manner. Based on this, the conductive structure 311 can be directly and insulatedly thermally connected to the insulating thermal 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 thermal conductive member 37, and ensuring and increasing the thermal contact area between the conductive structure 311 and the insulating thermal conductive member 37.

[0234] 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 for the electrical component 31.

[0235] 11 , 12 , and 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 outside the accommodating cavity 321 near the insulating thermal conductor 37 .

[0236] 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 within 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 thermal conductor 37.

[0237] 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 within 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 coordination 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. It can also facilitate the conductive structure 311 to 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, thereby facilitating 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, the thermal contact area between the conductive structure 311 of the relay 312 and the insulating thermal conductive part 37 can be increased, and the thermal conductivity effect between the relay 312 and the insulating thermal conductive part 37 can be improved, so that the heat generated by the relay 312 and its conductive structure 311 can be quickly and reliably and effectively discharged through the insulating thermal conductive part 37, the heat dissipation performance and heat dissipation efficiency of the distribution device 30 to the relay 312 can be improved, and the risk of thermal failure of the relay 312 can be reduced.

[0238] Referring to Figures 9, 11, and 13, in some embodiments of the present application, the power distribution device 30 includes a packaging base 38, which is connected to a side of the base 32 near the insulating thermal conductive member 37. The insulating thermal conductive member 37 is mounted on the packaging base 38. The surface of the insulating thermal conductive member 37 facing away from the electrical device 31 is exposed at the packaging base 38.

[0239] It should be noted that when the power distribution device 30 is disposed on the heat exchanger 40 (as shown in FIG3 ), the power distribution device 30 is mainly disposed on the heat exchanger 40 via the packaging seat 38 . The packaging seat 38 is a component for at least mounting and fixing the insulating heat conductive member 37 .

[0240] The electrical component 31 is located on the side of the packaging base 38 facing away from the heat exchanger 40. In some embodiments, the electrical component 31 can be mounted on the base 32 and fixed via the connection between the base 32 and the packaging base 38, and the mounting position and state relative to the packaging base 38 are substantially stable.

[0241] The insulating thermally conductive member 37 is mounted on the packaging base 38. The mounting arrangement between the insulating thermally conductive member 37 and the packaging base 38 can be flexibly designed. The side of the insulating thermally conductive member 37 facing the electrical component 31 is insulated and thermally connected to the electrical component 31. The surface of the insulating thermally conductive member 37 facing away from the electrical component 31 is exposed on the side of the packaging base 38 facing the heat exchanger 40 and is thermally connected to the heat exchanger 40.

[0242] By adopting the above solution, the insulating heat conductive member 37 can be fixedly mounted via the packaging seat 38, so that the mounting position and mounting state of the insulating heat conductive member 37 relative to the packaging seat 38 are stable and firm, thereby facilitating the precise and stable alignment of the insulating heat conductive member 37 with the electrical component 31, and facilitating the precise and reliable establishment of an insulating heat conductive connection relationship between the insulating heat conductive member 37 and the electrical component 31. On this basis, since the side of the insulating heat conductive member 37 facing the electrical component 31 is insulated and heat conductively connected to the electrical component 31, while the surface of the insulating heat conductive member 37 facing away from the electrical component 31 is exposed to the packaging seat 38 and heat conductively connected to the heat exchanger 40, the insulating heat conductive member 37 can be directly insulated and heat conductively connected between the electrical component 31 and the heat exchanger 40, thereby reducing the blocking effect of the packaging seat 38 on the heat conductive path of the insulating heat conductive member 37, and ensuring and improving the heat conductive effect of the insulating heat conductive member 37 between the electrical component 31 and the heat exchanger 40.

[0243] 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 .

[0244] Please refer to FIG. 9 , FIG. 11 , and FIG. 13 . In some embodiments of the present application, the insulating heat-conducting member 37 is embedded in the packaging seat 38 .

[0245] It should be noted that part or all of the insulating heat-conducting member 37 is embedded in the packaging seat 38. The side of the insulating heat-conducting member 37 facing the electrical component 31 is insulated and thermally connected to the electrical component 31. The surface of the insulating heat-conducting member 37 facing away from the electrical component 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.

[0246] By adopting the above solution, building on the previous embodiment, at least a portion of the insulating thermally conductive member 37 can be embedded in the packaging base 38. This allows, on the one hand, at least a portion of the insulating thermally conductive member 37 to share space with the packaging base 38, thereby reducing the space occupied by both the insulating thermally conductive member 37 and the packaging base 38. On the other hand, the insulating thermally conductive member 37 can pass through the packaging base 38, providing a direct, insulated, and thermally conductive connection between the electrical component 31 and the heat exchanger 40. This reduces the impact of the packaging base 38 on the insulating thermally conductive member 37's heat conduction path, thereby ensuring and improving the thermal conductivity of the insulating thermally conductive member 37 between the electrical component 31 and the heat exchanger 40.

[0247] Referring to Figures 9, 11, and 13, in some embodiments of the present application, a first limiting structure 381 is provided on the side of the packaging seat 38 facing the electrical component 31 for limiting the portion of the electrical component 31 connected to the insulating heat conductor 37.

[0248] 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 variously designed, for example, the first limiting structure 381 can be a hole structure, a groove structure, or a frame structure.

[0249] The portion of the electrical device 31 that is used for thermal connection with the insulating heat-conducting member 37 (e.g., the second conductive portion 3113 mentioned above) can be positionally mounted in the first limiting structure 381 and is insulated and thermally connected to the surface of the insulating heat-conducting member 37 corresponding to the first limiting structure 381. When the portion of the electrical device 31 that is used for thermal connection with the insulating heat-conducting member 37 can be limited in the first limiting structure 381, the shape of the portion 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 portion of the electrical device 31 and the first limiting structure 381 can be a clearance fit, a transition fit, or an interference fit.

[0250] By adopting the above scheme, a first limiting structure 381 can be provided on the packaging seat 38 so that the part of the electrical component 31 used for thermal connection with the insulating heat conductive member 37 can be limitedly installed in the first limiting structure 381 and connected to the surface of the insulating heat conductive member 37 at the first limiting structure 381. 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 component 31 used for thermal connection with the insulating heat conductive member 37, so that each electrical component 31 and the packaging seat 38 can be quickly and accurately aligned, and each electrical component 31 can be accurately aligned with the insulating heat conductive member 37 installed in the packaging seat 38, so that the relative position and relative state between the electrical component 31 and the insulating heat conductive member 37 can be stabilized, so that the electrical component 31 and the insulating heat conductive member 37 can be accurately and reliably connected to each other, and the heat conductive effect between the electrical component 31 and the insulating heat conductive member 37 can be guaranteed.

[0251] 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 conductor 37 facing the electrical device 31 may be exposed on the corresponding side of the packaging seat 38 and thermally connected to at least part of the electrical device 31.

[0252] Please refer to FIG. 9 , FIG. 11 , and FIG. 13 . In some embodiments of the present application, a second limiting structure 382 is provided on a side of the packaging seat 38 facing away from the electrical device 31 , for limiting the installation of the insulating heat conductive member 37 .

[0253] It should be noted that a second retaining structure 382 is provided on the side of the packaging base 38 facing away from the electrical device 31 (i.e., the side of the packaging base 38 facing the heat exchanger 40). The structure of the second retaining structure 382 can be variously designed. For example, the second retaining structure 382 can be a groove structure, a hole structure, a frame structure, etc.

[0254] The insulating heat-conducting member 37 is fixedly mounted in the second limiting structure 382. When the insulating heat-conducting member 37 is fixedly mounted in the second limiting structure 382, ​​the shape of the second limiting structure 382 and the shape of the insulating heat-conducting member 37 can be the same or different, and the fit between the insulating heat-conducting member 37 and the second limiting structure 382 can be a clearance fit, a transition fit, or an interference fit.

[0255] By adopting the above solution, a second limiting structure 382 can be provided on the side of the packaging seat 38 facing away from the electrical component 31, so that the insulating heat conductive member 37 can be fixedly installed in the second limiting structure 382. Based on this, the second limiting structure 382 of the packaging seat 38 can limit and accommodate the insulating heat conductive member 37, thereby facilitating rapid and accurate assembly of the insulating heat conductive member 37 and the packaging seat 38, and promoting precise alignment of the insulating heat conductive member 37 with the electrical component 31 to be thermally connected, thereby facilitating the insulating heat conductive member 37 to accurately, stably, and reliably perform its heat conduction function.

[0256] Please refer to FIG. 4 to FIG. 13 . In summary of the above embodiments, the present application provides a specific example of a power distribution device 30 .

[0257] The power distribution device 30 includes a base 32 and relays 312. Two accommodating cavities 321 are provided on one side of the base 32. There are at least two relays 312, including a main positive relay 3121 and a main negative relay 3122. The main positive relay 3121 is fixedly mounted in one of the accommodating cavities 321. The main positive relay 3121 is a caseless relay, with the outer walls of its switch unit 3124 exposed within the accommodating cavity 321. The walls of the accommodating cavity 321 connect to the main positive relay 3121, securing the main positive relay 3121 to the accommodating cavity 321. The main negative relay 3122 is fixedly mounted in the other accommodating cavity 321. The main negative relay 3122 is a caseless relay, with the outer walls of its switch unit 3124 exposed within the accommodating cavity 321. The walls of the accommodating cavity 321 connect to the main negative relay 3122, securing the main negative relay 3122 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 themselves 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.

[0258] 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. The bottom wall 3212 is used to support the relay 312, and the top wall 3213 is disposed opposite the bottom wall 3212. The first side wall 3214 is disposed opposite the second side wall 3215. The third side wall 3216 is disposed opposite the opening 3217 of the accommodating chamber 321. The bottom wall 3212, top wall 3213, first side wall 3214, second side wall 3215, and third side wall 3216 are each provided with a protrusion 323. The protrusion 323 provided on the bottom wall 3212, top wall 3213, first side wall 3214, and second side wall 3215 is a first protrusion 3231, which extends away from the opening 3217. The raised structures 323 provided on the third sidewall 3216 are second protrusions 3232, each of which is cross-connected. Consequently, during assembly of the relay 312 in the accommodating cavity 321, the bottom wall 3212, top wall 3213, first sidewall 3214, and second sidewall 3215 can all pass through the first protrusions 3231, following the direction of assembly and disassembly of the relay 312 from the accommodating cavity 321, thereby reducing friction with the relay 312, particularly in directions other than the assembly and disassembly direction. Furthermore, the bottom wall 3212, top wall 3213, first sidewall 3214, second sidewall 3215, and third sidewall 3216 can all form first gaps 322 with the relay 312 through areas where the raised structures 323 are not provided, thereby creating an assembly margin through the first gaps 322 and providing assembly space. This improves the ease and efficiency of assembly between the relay 312 and the accommodating cavity 321. When the relay 312 is placed in the accommodating cavity 321, the bottom wall 3212, top wall 3213, first side wall 3214, second side wall 3215, and third side wall 3216 all abut against the relay 312 via the protrusions 323, thereby ensuring and enhancing the positional retention and positioning of the relay 312. Furthermore, the first gaps 322 form connecting spaces for filling with structural adhesive, thereby facilitating the stable and reliable fixing of the relay 312 to the accommodating cavity 321. This improves the secure installation of the relay 312 in the accommodating cavity 321.

[0259] The power distribution device 30 includes two covering members 33. The covering members 33 are snap-connected to the inner wall 3211 of the accommodating cavity 321 via a snap 333, allowing the two covering members 33 to one-on-one block the openings 3217 of the two accommodating cavities 321. Based on this, the covering members 33 can cooperate with the base 32 to form a comprehensive 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 covering members 33 can reliably prevent the relay 312 from escaping from the opening 3217 of the accommodating cavity 321, and in particular, prevent the relay 312 from escaping from the accommodating cavity 321 due to vibration during operation, thereby ensuring the stable and reliable installation of the relay 312 by the power distribution device 30. The cover 33 can reliably prevent external devices from contacting, colliding with, or 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 .

[0260] The relay 312 is provided with two contacts 3125, and the relay 312 is arranged with its contacts 3125 facing 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 distribution device 30.

[0261] A barrier structure 332 is provided on the side of the cover 33 facing away from the accommodating cavity 321. This barrier structure 332 is located between the two through-holes 331. Therefore, when the two contacts 3125 of the relay 312 pass through the two through-holes 331 of the cover 33 one-on-one, the cover 33 can insulate and separate the two contacts 3125 exposed in the two through-holes 331 through the barrier structure 332. This increases the creepage distance between the two contacts 3125 of the relay 312, improving the insulation between the two contacts 3125 of the relay 312, thereby reducing the risk of short circuits and alleviating safety hazards of the power distribution device 30.

[0262] The two accommodating cavities 321 are arranged adjacent to each other, that is, arranged close to each other. The base 32 is provided with an insulating structure 324, which is arranged between the two accommodating cavities 321. The insulating structure 324 can insulate and separate the two accommodating cavities 321, and in particular, can insulate and separate the main positive relay 3121 from the main negative relay 3122, and in particular, can insulate and separate the contacts 3125 of the main positive relay 3121 from the contacts 3125 of the main negative relay 3122. Based on this, the insulation between the contacts 3125 of the main positive relay 3121 and the contacts 3125 of the main negative relay 3122 can be improved, the risk of short circuits can be reduced, and the reliability and safety of the power distribution device 30 can be improved.

[0263] 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 faces away from the accommodating cavity 321. The shielding member 34 can shield the two cover members 33, as well as the contacts 3125 of the main positive relay 3121 and the contacts 3125 of the main negative relay 3122. Based on this, the shielding member 34 can provide protection for the two cover members 33, the contacts 3125 of the main positive relay 3121, and the contacts 3125 of the main negative relay 3122, thereby ensuring and extending the service life of the relays 312 and the power distribution device 30. The shielding member 34 can also reliably prevent human hands or external devices from contacting the contacts 3125 of the main positive relay 3121 and the contacts 3125 of the main negative relay 3122 and causing them to conduct electricity, thereby reducing safety hazards of the power distribution device 30.

[0264] 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 effect current sensor 3132, a main fuse 3141, and a pre-charge resistor 315. Each electrical component 31 is mounted on a base 32. The pre-charge relay 3123 is located on the side of the main positive relay 3121 facing away from the main negative relay 3122 and is positioned adjacent to the main positive relay 3121. The pre-charge resistor 315 is located on the side of the pre-charge relay 3123 facing away from the main positive relay 3121 and is positioned adjacent to the pre-charge relay 3123. The main fuse 3141 is located on the side of the main positive relay 3121 facing away from the main negative relay 3122, and is located next to both the pre-charge relay 3123 and the pre-charge resistor 315. The main fuse 3141 is located 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 located on the side of the main fuse 3141 facing away from the main positive relay 3121. The shunt 3131 is located on the side of the main negative relay 3122 facing 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 electrically connected according to the circuit schematic diagram of the power distribution device 30. The circuit schematic diagram of the power distribution device 30 is 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 a compact and optimized layout, thereby reducing the design margin, space waste, and occupied space of the power distribution device 30, and reducing 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). The overall external dimensions of the power distribution device 30 can be reduced, thereby facilitating the formation of an integrated and miniaturized power distribution device 30.

[0265] The power distribution device 30 also includes a cover 35, which is mounted on one side of the base 32. Based on the compact layout of the electrical components 31, the base 32 and cover 35 enclose an internal space to accommodate the pre-charge relay 3123 and pre-charge resistor 315. A circuit element 36 is provided on the side of the cover 35 facing the electrical components 31. The circuit element 36 can be used to electrically connect to the electrical components 31, establishing the required electrical connections for each electrical component 31 and ensuring that the power distribution device 30 can function as intended.

[0266] Each electrical component 31 is provided with a first connector 317 having a first connecting portion 3171 for detachably electrically connecting to a circuit element 36. For any electrical component 31, the gap between it and an adjacent electrical component 31 can serve as a second gap 316, with the first connecting portion 3171 of the first connector 317 located outside each of its second gaps 316. Taking the pre-charge relay 3123 as an example, the main positive relay 3121, the pre-charge resistor 315, and the main fuse 3141 are all located adjacent to the pre-charge relay 3123. The gaps between the main positive relay 3121 and the pre-charge relay 3123, the gap between the pre-charge resistor 315 and the pre-charge relay 3123, and the gap between the main fuse 3141 and the pre-charge relay 3123 can all serve as second gaps 316. However, the sizes of these second gaps 316 can be the same or different. The first connection portion 3171 of the first connector 317 provided in the pre-fill relay 3123 can be located outside each second gap 316 of the pre-fill relay 3123. That is, the first connection portion 3171 provided in the pre-fill relay 3123 can be located outside the gap between the main positive relay 3121 and the pre-fill relay 3123, outside the gap between the pre-fill resistor 315 and the pre-fill relay 3123, and outside the gap between the main fuse 3141 and the pre-fill relay 3123. Therefore, in this embodiment, the first connection portion 3171 of the pre-fill relay 3123 is located on the side of the pre-fill relay 3123 facing the cover 35. Similarly, the first connection portion 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-fill resistor 315 can be located as far away from their respective second gaps 316 as possible. Of course, depending on layout design requirements, some electrical devices 31 may have their first connection portions 3171 positioned within their second gaps 316. Therefore, by positioning the first connection portions 3171 outside the respective second gaps 316 of the corresponding electrical devices 31, the connection operation of the first connection portions 3171 can be performed in the space outside the respective second gaps 316 of the corresponding electrical devices 31, thereby ensuring and improving the ease of connecting and disconnecting the first connection portions 3171. Furthermore, each second gap 316 of the electrical device 31 does not require space for accommodating the first connection portion 3171, nor does it require space for connection operations of the first connection portion 3171. This facilitates the desired reduction of the gap between the electrical device 31 and adjacent electrical devices 31, thereby facilitating a more compact overall layout of the electrical devices 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.

[0267] The circuit element 36 includes two connectors 361, one of which is used to connect to the battery cell 10 (as shown in Figure 3) to achieve high-voltage sampling, and the other connector 361 is used to connect to the battery cell 10 for low-voltage control. Both connectors 361 are embedded in the cover 35, and the connector ports 3611 of both connectors 361 are exposed outside the cover 35. Depending on the number and location 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 extends toward the electrical component 31 to which it is connected. At the end of the conductive connecting portion 3622 closest to the corresponding electrical component 31, the second connector 362 can be bent to form a second connecting portion 3621. The second connection portion 3621 is bent toward the corresponding electrical component 31 and can be used for removable plug-in engagement with the first connection portion 3171 of the corresponding electrical component 31. The plug-in engagement direction of the second connection portion 3621 and the corresponding first connection portion 3171 can correspond to the assembly direction of the cover 35 and the base 32. Based on this, when the cover 35 and the base 32 are assembled, the second connection portion 3621 and the corresponding first connection portion 3171 can be precisely aligned and plug-in engagement with the corresponding first connection portion 3171 can be completed simultaneously. This can reduce the number of assembly steps, ensure and improve the connection reliability between the connector 361 and the electrical component 31, and improve the assembly efficiency and structural reliability of the power distribution device 30.

[0268] Conductive connector 3622 utilizes a conductive sheet, FPC, or PCB, replacing a wiring harness. This reduces wiring harness installation, reduces wiring harness interference and wear, and improves the structural reliability of connector 361 and second connector 362, thereby ensuring and improving the reliability and safety of power distribution device 30. Connector 361 is embedded in cover 35, and conductive connector 3622 is embedded in cover 35. Cover 35, connector 361, and conductive connector 3622 are integrally injection molded.

[0269] The power distribution device 30 includes a packaging base 38. The packaging base 38 is installed on the side of the base 32 facing away from the cover 35. Based on the compact layout of the above-mentioned electrical components 31, the base 32 and the packaging base 38 can enclose an internal space to accommodate the installation of the main fuse 3141.

[0270] When the power distribution device 30 is disposed on the heat exchanger 40 (as shown in FIG3 ), the power distribution device 30 is primarily disposed 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. 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 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.

[0271] 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 extends toward the side close to the packaging seat 38. The third conductive portion 3114 is connected to the corresponding electrical component and extends 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. A first limiting structure 381 is provided on the side of the packaging seat 38 facing the base 32. The first limiting structure 381 is a hole-shaped structure. 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-conducting part 37 is provided with a heat-conducting surface 3111, and the heat-conducting surface 3111 is insulated and heat-conductingly connected to the surface of the insulating heat-conducting part 37 corresponding to the first limiting structure 381.

[0272] Based on this, during the operation of the electrical device 31, the insulating thermal conductor 37 can conduct the heat generated by the electrical device 31, especially the conductive structure 311, to the heat exchanger 40, so as to quickly dissipate the heat of the electrical device 31 outside the power distribution device 30, thereby improving the heat dissipation performance and efficiency of the power distribution device 30 for 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. Specifically, the insulating thermal conductor 37 is made of a ceramic component with excellent thermal conductivity and voltage withstand capability, so that the insulating thermal conductor 37 can reliably perform its heat conduction function and reduce the risk of high voltage breakdown of the insulating thermal conductor 37 during the operation of the electrical device 31, thereby ensuring and extending the service life of the insulating thermal conductor 37 and ensuring and improving the service life and safety of the power distribution device 30.

[0273] The conductive structure 311 of the relay 312 is disposed outside the accommodating cavity 321, without occupying any additional space within 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 thermal conductive member 37, so that the conductive structure 311 of the relay 312 can be directly insulated and thermally connected to the insulating thermal conductive member 37 via the second conductive portion 3113.

[0274] Please refer to Figures 3 and 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.

[0275] By adopting the above solution, the battery 1 can ensure and improve the space utilization, volume utilization and energy density of the battery 1 by applying the distribution device 30 provided in the embodiment of the present application.

[0276] Please refer to FIG1 . Some embodiments of the present application provide an electrical device, including a battery 1 provided in an embodiment of the present application.

[0277] 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.

[0278] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent replacements or improvements made within the spirit and principles of the present application should be included in the scope of protection of the present application.

Claims

1. A power distribution device, wherein: 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, wherein: The relay abuts against at least a portion of the inner wall.

3. The power distribution device according to claim 2, wherein: 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, wherein: 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, wherein: 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, wherein: 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, wherein: 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, wherein: 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, wherein: 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, wherein: 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, wherein: 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, wherein: 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, wherein: 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, wherein: 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, wherein: 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, wherein: 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, wherein: 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, wherein: 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, wherein: 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, wherein: 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, wherein: 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, wherein: 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, wherein: Comprising a power distribution device as claimed in any one of claims 1-22.

24. An electrical device, wherein: Comprising a battery as claimed in claim 23.

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