Power distribution device, battery device and power utilization device

Abstract

The utility model belongs to the technical field of batteries, and particularly relates to a power distribution device, a battery device and a power utilization device.The power distribution device comprises a shell and an electric appliance element, a control panel and an electric connecting piece which are installed on the shell, the electric appliance element is provided with an electric connecting part, and the control panel is arranged on the side portion of the electric appliance element; the electric connecting piece comprises an insulating main body and a first terminal and a second terminal which are arranged on the insulating main body, the first terminal is partially exposed and electrically connected with the control panel, and the second terminal is partially exposed and electrically connected with the electric connecting part in a contact manner. Thus, the electric connecting piece can replace a traditional switching wire harness and can be integrally assembled in the interval space between the electric connecting part of the electric appliance element and the control panel, the structure of the electric connecting piece is more compact, complex wiring is not needed, the assembling steps are simplified, the assembling efficiency is improved, redundant space for bending the wire harness does not need to be reserved in the shell, and the cost is reduced. The internal space layout of the shell is optimized, the overall size and weight of the power distribution device are reduced, and the requirements for light weight and miniaturization of the power distribution device are met.

Description

Technical Field

[0001] This application belongs to the field of battery technology, and particularly relates to a power distribution device, a battery device, and a power consumption device. Background Technology

[0002] With the development of science and technology, new energy electric vehicles are gradually becoming more widespread. As one of the core components of electric vehicles, the battery is the energy hub, and battery technology is a crucial factor in the development of electric vehicles.

[0003] The battery device includes a power distribution unit, which is equipped with a control board and electrical components such as relays and fuses. Each electrical component is electrically connected to the control board to transmit current and electrical signals. In related technologies, electrical components are usually connected to the control board via wiring harnesses, with each end of the wiring harness connecting the electrical component to the control board. In practical applications, the large number of wiring harnesses and their large space occupation make it difficult for the power distribution unit to meet the design requirements of miniaturization and lightweighting. At the same time, the complex wiring harness also makes it difficult to improve the assembly efficiency of the power distribution unit.

[0004] The above statements are for the purpose of providing background information in relation to this application only and do not necessarily constitute prior art. Utility Model Content

[0005] The purpose of this application is to provide a power distribution device, a battery device, and a power consumption device to improve the assembly efficiency of the power distribution device and reduce its size.

[0006] The technical solution adopted in the embodiments of this application is:

[0007] In a first aspect, a power distribution device is provided, comprising:

[0008] case;

[0009] Electrical components, mounted in a housing and having electrical connections exposed outside the housing;

[0010] A control board, mounted on the housing and disposed on the side of the electrical components along a first direction, with an electrical connection portion spaced apart from the control board along the first direction; and

[0011] An electrical connector is disposed between an electrical connection portion and a control board. The electrical connector includes an insulating body and a first terminal and a second terminal disposed at opposite ends of the insulating body along a first direction. The first terminal and the second terminal are electrically connected. The first terminal is exposed outside the insulating body and electrically connected to the control board. The second terminal is exposed outside the insulating body and is in contact with and electrically connected to the electrical connection portion.

[0012] By adopting the technical solution of the embodiments of this application, the power distribution device includes a housing, electrical components, a control board, and electrical connectors. The electrical components are installed in the housing and have an electrical connection portion exposed relative to the housing. The control board is disposed on the side of the electrical components along a first direction, and the electrical connection portion and the control board are disposed at intervals relative to each other along the same direction. The electrical connectors include an insulating body and a first terminal and a second terminal disposed at both ends of the insulating body. A portion of the first terminal is exposed and electrically connected to the control board, and a portion of the second terminal is exposed and contacts and is electrically connected to the electrical connection portion of the electrical components. Thus, by using electrical connectors instead of traditional adapter harnesses, the electrical connectors can be integrated into the space between the electrical connection part of the electrical component and the control board. The structure of the electrical connectors is more compact, eliminating the need for complex wiring and redundant space for wiring harness bending. This helps optimize the internal space layout of the housing, reducing the overall size and weight of the power distribution device, which meets the requirements for lightweight and miniaturized power distribution devices. Furthermore, the insulating body of the electrical connector can position the first and second terminals. During assembly, the first terminal of the electrical connector is aligned with the control board, and the second terminal is kept in contact with the electrical connection part of the electrical component. This establishes a stable and reliable electrical connection without the need for complex wiring operations, simplifying the assembly steps of the power distribution device and improving assembly efficiency.

[0013] In some embodiments, the second terminal is elastically connected to the insulating body and abuts against the electrical connection portion.

[0014] By adopting the technical solution of this embodiment, the part of the second terminal exposed outside the insulating body elastically abuts against the electrical connection part. The second terminal can actively adhere to and press the electrical connection part under its own elastic force or the force of the external elastic element, and achieve a reliable electrical connection between the two by relying on physical pressure, so as to realize the transmission of current and signal. There is no need for additional connection processes such as welding, crimping or bolt fastening between the second terminal and the electrical connection part, which simplifies the assembly steps.

[0015] In some embodiments, the electrical connector further includes an elastic element disposed on the insulating body, the first terminal is fixedly connected to the insulating body, and the second terminal is movably disposed on the insulating body and elastically connected to the first terminal through the elastic element.

[0016] By adopting the technical solution of this embodiment, the first terminal is fixedly connected to the insulating body, the second terminal is movably connected to the insulating body, and is connected to the first terminal through an elastic element, thereby realizing the mutual connection between the second terminal and the insulating body.

[0017] In some embodiments, the elastic element is a conductive component.

[0018] By adopting the technical solution of this embodiment, the second terminal is directly electrically connected to the first terminal through the elastic element, which helps to simplify the overall structural design of the electrical connector and simplify the assembly operation.

[0019] In some embodiments, the insulating body has a first connecting end disposed opposite to the electrical connection portion along a first direction. The first connecting end is provided with a cavity with an opening opposite to the connecting portion. An elastic member is disposed in the cavity. A portion of the first terminal and a portion of the second terminal extend into the cavity and are connected to the elastic member. The second terminal is slidable relative to the cavity.

[0020] By adopting the technical solution of this embodiment, the cavity houses the elastic member and at least part of the first terminal and the second terminal, so that the insulating body isolates the first terminal and the second terminal from other external electrical structures, reducing the risk of internal short circuit of the power distribution device; and the second terminal is inserted into the cavity and can slide relative to the cavity, so that the second terminal can adjust its own posture under the elastic force of the elastic member to maintain reliable contact with the electrical connection part.

[0021] In some embodiments, the elastic member elastically connects the first terminal and the second terminal along a first direction, and the second terminal abuts against the electrical connection portion along the first direction.

[0022] By adopting the technical solution of this embodiment, the second terminal can move at least along the first direction, thereby always maintaining contact with the electrical connection part, and improving the connection reliability between the two.

[0023] In some embodiments, the sidewall of the second terminal is spaced apart from the cavity wall.

[0024] By adopting the technical solution of this embodiment, the second terminal can not only move along the first direction, but also float along other directions, so that the second terminal can better compensate for the assembly tolerance between the electrical connection part and improve the adaptability and versatility of the electrical connection.

[0025] In some embodiments, along a first direction, the end of the second terminal away from the first terminal protrudes from the insulating body, and the size of the protruding portion is 0.5mm to 4.0mm.

[0026] By adopting the technical solution of this embodiment, the minimum protrusion size of the second terminal is not less than 0.5mm, which reduces the risk that the second terminal may not be able to reach the electrical connection part due to the processing error of the insulation body or the assembly gap, or that the contact resistance may be too large and the signal transmission may be unstable due to insufficient contact area; the maximum protrusion size of the second terminal does not exceed 4.0mm, which reduces the risk of bending due to the excessive length and insufficient rigidity of the second terminal structure when it abuts against the electrical connection part, and at the same time can keep the overall volume of the electrical connector within a small range, which helps to reduce the overall volume of the power distribution device.

[0027] In some embodiments, along a first direction, a first groove is provided at one end of the first terminal facing the electrical connection portion, an elastic member is disposed in the first groove and one end is connected to the groove wall of the first groove, one end of the second terminal away from the electrical connection portion is embedded in the first groove and connected to the other end of the elastic member, and the other end of the second terminal extends out of the first groove.

[0028] By adopting the technical solution of this embodiment, the end of the second terminal away from the electrical connection part is inserted into the first groove and connected to the elastic element. In this way, the second terminal can be elastically connected to the first terminal to form an integral assembly and be fixed to the insulating body, which helps to simplify the assembly process. In addition, the second terminal is partially inserted into the interior of the first terminal, increasing the electrical connection area between the two and improving the reliability of the electrical connection.

[0029] In some embodiments, the sidewall of the second terminal is provided with a first protrusion, and the wall of the first groove is provided with a second protrusion. The first protrusion is located in the first groove and is located on the side of the second protrusion along a first direction.

[0030] By adopting the technical solution of this embodiment, the second protrusion can restrict the displacement of the first protrusion along the first direction, thereby reducing the risk of the second terminal detaching from the first terminal and improving the assembly stability and reliability of the second terminal and the first terminal.

[0031] In some embodiments, the end of the second terminal located in the first groove is provided with a second groove, and the end of the elastic member connected to the second terminal is embedded in the second groove.

[0032] By adopting the technical solution of this embodiment, the end of the elastic element connected to the second terminal can be engaged in the second groove, thereby improving the connection strength and stability between the elastic element and the second terminal.

[0033] In some embodiments, the insulating body further has a second connection end disposed opposite to the control board along a first direction, and one end of the first terminal away from the second terminal extends from the second connection end and is electrically connected to the control board.

[0034] By adopting the technical solution of this embodiment, the risk of interference between the insulating body and the interconnection operation between the first terminal and the control board can be reduced. Furthermore, the connection of the first terminal to the control board in the external space can also reduce the difficulty of the connection operation and help improve the electrical connection efficiency.

[0035] In some embodiments, the control board is provided with a connection hole at a position opposite to the second connection end, and the second terminal is inserted into the connection hole and soldered to the control board.

[0036] By adopting the technical solution of this embodiment, the end of the first terminal can be adapted to be inserted into the connection hole, so that the first terminal and the control board can achieve a limiting connection. Furthermore, the part of the first terminal inserted into the connection hole can also be soldered to the control board at the position of the connection hole. The space inside the connection hole can also accommodate some solder, thereby improving the electrical connection strength and reliability between the first terminal and the control board.

[0037] In some embodiments, the second connection end abuts against the control panel along the first direction.

[0038] By adopting the technical solution of this embodiment, the electrical connector is sandwiched between the electrical connection parts of the control board along the first direction, reducing the probability of the insulating body moving, improving the reliability of the electrical connector connecting the control board and the electrical connection parts, and the insulating body can also support the control board, reducing the risk of displacement of the control board and improving the assembly stability of the housing.

[0039] In some embodiments, the sidewall of the cavity is provided with a third protrusion, and the sidewall of the first terminal is provided with a fourth protrusion. Along the first direction, the fourth protrusion is attached to the side of the third protrusion facing the control board.

[0040] By adopting the technical solution of this embodiment, the insulating body can restrict the first terminal from moving toward the electrical connection part in the first direction through the third protrusion, thereby reducing the risk of the first terminal detaching from the control board due to moving toward the electrical connection part, and making the connection between the first terminal and the control board more stable and reliable.

[0041] In some embodiments, the first terminal is integrally embedded in the insulating body.

[0042] By adopting the technical solution of this embodiment, there is no need for secondary assembly between the first terminal and the insulating body, which also helps to simplify the assembly steps. At the same time, the first terminal and the insulating body are integrated as a whole, which can also improve the connection strength between the two, thereby improving the connection reliability with the second terminal and improving the reliability of conductivity.

[0043] In some embodiments, the electrical connection portion has an electrical connection surface exposed outside the housing and disposed opposite to the control panel, and the second terminal is in contact with and electrically connected to the electrical connection surface.

[0044] By adopting the technical solution of this embodiment, the end of the second terminal away from the control board is in contact with the electrical connection part. The second terminal and the electrical connection part are in point-to-surface or surface-to-surface contact, which can reduce the risk of connection instability or failure caused by the end of the first terminal or the electrical connection part being skewed or deformed. This is beneficial to improving the reliability of the electrical connection, while also reducing the difficulty of alignment and improving assembly efficiency.

[0045] In some embodiments, the electrical connection surface is perpendicular to the first direction.

[0046] By adopting the technical solution of this embodiment, the second terminal is perpendicular to the electrical connection surface along the first direction, which reduces the risk of connection misalignment caused by structural skew. At the same time, the effective contact area of ​​the electrical connection part for electrical connection of the second terminal is increased, which helps to reduce internal resistance and improve connection stability.

[0047] In some embodiments, the area of ​​the electrical connection surface is 0.5 cm². 2 ~1.0cm 2 .

[0048] By adopting the technical solution of this embodiment, there is a sufficiently large electrical contact area between the electrical connection surface and the second terminal, resulting in higher electrical connection stability and reliability.

[0049] In some embodiments, the surface of the second terminal opposite to the electrical connection surface is a convex arc surface, and the projection of the convex arc surface is located within the projection range of the electrical connection surface, with the first direction as the projection direction.

[0050] By adopting the technical solution of this embodiment, the elastic force of the elastic element can be concentrated along the first direction at the top position of the convex arc surface, so that the second terminal can be better pressed against the electrical connection surface, thereby improving the connection strength between the two. Furthermore, the convex arc surface can be completely opposite to the electrical connection surface, so that the second terminal can abut against the electrical connection surface in the middle of the electrical connection surface, thereby further reducing the alignment difficulty and improving the connection stability.

[0051] In some embodiments, the electrical connection surface is a gold-plated surface covering the surface of the electrical connection portion; and / or, the convex arc surface is a gold-plated surface covering the end face of the second terminal.

[0052] By adopting the technical solution of this embodiment, at least one of the two surfaces that come into contact with each other, namely the electrical connection surface of the electrical connection part and the convex arc surface of the second terminal, is set as a gold-plated surface, thereby further improving the contact performance of the two contact surfaces and reducing the risk of wear and increased impedance caused by vibration or impact.

[0053] In some embodiments, the electrical connector includes a plurality of second terminals, which are spaced apart on the insulating body, and the electrical connection surface contacts and is electrically connected to each of the second terminals.

[0054] By adopting the technical solution of this embodiment, the same electrical connector can provide multiple second terminals for electrical connection with electrical components, thereby increasing the electrical contact area and improving the stability and reliability of the electrical connection.

[0055] In some embodiments, the electrical component has two spaced-apart electrical connection portions, each of which is electrically connected to the control board via an electrical connector.

[0056] By adopting the technical solution of this embodiment, the two electrical connection parts of the electrical component can be respectively a positive connection part and a negative connection part. The two electrical connection parts are respectively electrically connected to the corresponding positions of the control board through an electrical connector. There will be no interference between the two, so that the electrical component can be stably and reliably connected to the control circuit of the control board.

[0057] In some embodiments, the electrical component is at least one of a relay, a fuse, and a pre-charge resistor.

[0058] In some embodiments, the housing has a fourth groove with an opening opposite to the control panel, at least a portion of the electrical connection portion is located in the fourth groove, and the end of the insulating body opposite to the electrical connection portion is inserted into the fourth groove.

[0059] By adopting the technical solution of this embodiment, the fourth groove can position the electrical connector during assembly. During assembly, the end of the insulating body facing the electrical connection is inserted into the fourth groove. At the same time, the fourth groove can also limit the electrical connector, reduce the risk of the electrical connector shaking, and improve the reliability and stability of the electrical connection between the electrical components and the control board.

[0060] In some embodiments, the insulating body is a cylindrical structure with its centerline parallel to a first direction.

[0061] Secondly, this application provides a battery device, including a battery cell assembly and the aforementioned power distribution device, wherein the power distribution device is used to electrically connect to the battery cell assembly.

[0062] The battery device in this embodiment adopts the power distribution device of the above embodiments, and therefore has at least all the beneficial effects of the above power distribution device, which will not be repeated here.

[0063] Thirdly, this application provides an electrical device including the aforementioned battery device, which is used to supply electrical energy to the electrical device.

[0064] The power device in this embodiment adopts the battery device of the above embodiments, and therefore has at least all the beneficial effects of the above battery devices, which will not be repeated here.

[0065] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, the following are specific embodiments of this application. Attached Figure Description

[0066] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments or prior art will be briefly introduced below. The drawings are only used to illustrate the embodiments and are not intended to limit this application. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0067] Figure 1 This is a schematic diagram of the vehicle structure according to some embodiments of this application;

[0068] Figure 2 This is an exploded view of a battery device according to some embodiments of this application;

[0069] Figure 3 This is a schematic diagram of the structure of a power distribution device provided in some embodiments of this application;

[0070] Figure 4 for Figure 3 The diagram shows a partial exploded view of the power distribution unit.

[0071] Figure 5 for Figure 3 The front view of the power distribution unit shown;

[0072] Figure 6 For along Figure 5 Sectional view of line AA in the middle;

[0073] Figure 7 for Figure 6 Enlarged view at point A in the middle;

[0074] Figure 8 for Figure 3 The diagram shows the structural schematic of the electrical connectors of the power distribution device.

[0075] Figure 9 for Figure 8 The front view of the electrical connector shown;

[0076] Figure 10 For along Figure 9 A cross-sectional view along the BB line.

[0077] The following are the labeling elements in the figure:

[0078] 100. Vehicle; 1001. Controller; 1002. Motor;

[0079] 200. Battery device;

[0080] 10. Power distribution device; 11. Housing; 111. Fourth slot; 12. Electrical component; 121. Electrical connection part; 1211. Electrical connection surface; 13. Control panel; 131. Connection hole; 14. Electrical connector; 14a. Insulating body; 141. First connection end; 142. Cavity; 1421. Third protrusion; 143. Second connection end; 145. First terminal; 1451. First slot; 1452. Second protrusion; 1453. Fourth protrusion; 146. Second terminal; 1461. First protrusion; 1462. Second slot; 1463. Convex arc surface; 147. Elastic element;

[0081] 20. Box body; 201. Accommodation space; 202. First part; 203. Second part;

[0082] 30. Battery cell assembly; 31. Battery cell. Detailed Implementation

[0083] To make the technical problem to be solved, the technical solution and the beneficial effects of this application clearer, the following is in conjunction with the appendix. Figures 1 to 10 The present application will be further described in detail below with reference to embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.

[0084] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0085] Unless otherwise specified, all embodiments and optional embodiments of this application can be combined to form new technical solutions.

[0086] Unless otherwise specified, all technical features and optional technical features of this application may be combined to form new technical solutions.

[0087] Unless otherwise specified, all steps of this application may be performed sequentially or randomly, preferably sequentially. For example, the method includes steps (a) and (b), indicating that the method may include steps (a) and (b) performed sequentially, or it may include steps (b) and (a) performed sequentially. For example, the mention that the method may also include step (c) indicates that step (c) may be added to the method in any order; for example, the method may include steps (a), (b), and (c), or it may include steps (a), (c), and (b), or it may include steps (c), (a), and (b), etc.

[0088] In the description of the embodiments of this application, technical terms such as "first" and "second" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature.

[0089] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least some of the embodiments of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments in any suitable manner.

[0090] In the description of the embodiments in this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0091] In the description of the embodiments of this application, the term "multiple" refers to two or more (including two), similarly, "multiple sets" refers to two or more (including two sets), and "multiple pieces" refers to two or more (including two pieces). "Several" means one or more, unless otherwise explicitly specified.

[0092] In the description of the embodiments of this application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0093] In the description of the embodiments of this application, unless otherwise expressly specified and limited, the technical terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0094] In the description of the embodiments of this application, unless otherwise expressly specified and limited, when an element is referred to as "fixed to" or "set on" another element, it may be directly on or indirectly on the other element. When an element is referred to as "connected to" another element, it may be directly connected to or indirectly connected to the other element.

[0095] In the description of the embodiments in this application, unless otherwise expressly specified and limited, the technical term "proximity" refers to being close in location. For example, among three components A1, A2, and B, the distance between A1 and B is greater than the distance between A2 and B. Therefore, A2 is closer to B than A1, meaning A2 is adjacent to B, or B is adjacent to A2. Similarly, when there are multiple components C, namely C1, C2, ..., C... N If one of the C components, such as C2, is closer to the B component than the other C components, then B is adjacent to C2, or C2 is adjacent to B.

[0096] Currently, judging from market trends, the application of power batteries is becoming increasingly widespread. Power batteries are not only used in energy storage systems such as hydropower, thermal power, wind power, and solar power plants, but also extensively used in electric vehicles such as electric bicycles, electric motorcycles, and electric cars, as well as in military equipment and aerospace. With the continuous expansion of power battery applications, market demand is also constantly increasing.

[0097] As market demands for battery performance continue to rise, higher requirements are being placed on the various performance aspects of battery devices. Typically, a battery device may include one or more individual battery cells, which provide voltage and capacity. The device also includes a power distribution unit, primarily responsible for controlling the smooth operation of the battery's charging and discharging circuits. This unit controls the power-on / off process, pre-charging process, and charging process of the electrical circuits. For example, a power distribution unit can be a high-voltage distribution box, responsible for the distribution and management of electrical energy in the high-voltage system of electrical equipment. An example is the PDU (Power Distribution Unit) used in new energy vehicles. The PDU's function is to distribute and manage electrical energy in the high-voltage system of the new energy vehicle, providing functions such as charging and discharging control, high-voltage component power-on control, circuit overload and short-circuit protection, high-voltage sampling, and low-voltage control to protect and monitor the operation of the high-voltage system. A high-voltage distribution box can also refer to a component used in a battery device for battery charging and discharging control, such as a BDU (Battery Disconnect Unit). The BDU is a system for controlling the charging and discharging of the battery and is a high-voltage distribution box specifically designed for batteries. In this context, "voltage" in "high-voltage distribution box" refers to voltage. A high-voltage distribution box is a distribution box used to control circuits with voltages exceeding 60V.

[0098] Generally, power distribution equipment has a control board for controlling circuit switching and collecting various electrical signals. It also includes electrical components such as relays and fuses for performing circuit switching control. These components are electrically connected to the control board to transmit current and electrical signals. In related technologies, adapter bundles are typically used to connect each electrical component to the control board. Each component is connected to the control board via a separate adapter bundle, with one end connected to the corresponding component and the other end connected to the control board. This transmission method requires a large number of adapter bundles, occupies significant space, and is difficult to meet the miniaturization and lightweight design requirements of power distribution equipment. Furthermore, the complex wiring of the adapter bundles hinders the improvement of assembly efficiency.

[0099] Based on this, this application provides a power distribution device including an electrical connector. The electrical connector can be integrated into the space between the control board and the electrical connection part of the electrical component. The electrical connector is electrically connected to the control board through a first terminal disposed at one end of the insulating body and electrically connected to the electrical connection part through a second terminal disposed at the other end of the insulating body, thereby electrically conducting the electrical component and the control board to realize the transmission of current and electrical signals. Thus, by using electrical connectors instead of traditional adapter harnesses, the electrical connectors can be integrated into the space between the electrical connection part of the electrical component and the control board. The structure of the electrical connectors is more compact, eliminating the need for complex wiring and redundant space for wiring harness bending. This helps optimize the internal space layout of the housing, reducing the overall size and weight of the power distribution device, which meets the requirements for lightweight and miniaturized power distribution devices. Furthermore, the insulating body of the electrical connector can position the first and second terminals. During assembly, the first terminal of the electrical connector is aligned with the control board, and the second terminal is kept in contact with the electrical connection part of the electrical component. This establishes a stable and reliable electrical connection without the need for complex wiring operations, simplifying the assembly steps of the power distribution device and improving assembly efficiency.

[0100] The power distribution device provided in this application embodiment can be applied to battery devices. The assembly efficiency and electrical reliability of the power distribution device are improved, thereby helping to improve the overall assembly efficiency and electrical performance of the battery device, and improving the practicality and economy of the battery device.

[0101] The battery device disclosed in this application can be used in electrical devices that use the battery device as a power source or in various energy storage systems that use the battery as an energy storage element. The electrical device can be, but is not limited to, mobile phones, tablets, laptops, electric toys, power tools, electric vehicles, electric cars, ships, spacecraft, etc. Among them, electric toys can include stationary or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, etc., and spacecraft can include airplanes, rockets, space shuttles, and spacecraft, etc.

[0102] For ease of explanation, the following embodiments provide an electrical device using a vehicle as an example.

[0103] Please refer to Figure 1 , Figure 1This is a schematic diagram of the structure of a vehicle 100 provided in some embodiments of this application. The vehicle 100 can be a gasoline-powered vehicle, a natural gas-powered vehicle, or a new energy vehicle. New energy vehicles can be pure electric vehicles, hybrid electric vehicles, or range-extended electric vehicles, etc. A battery device 200 is disposed inside the vehicle 100, and the battery device 200 can be located at the bottom, front, or rear of the vehicle 100. The battery device 200 can be used to power the vehicle 100; for example, the battery device 200 can serve as the operating power source for the vehicle 100. The vehicle 100 may also include a controller 1001 and a motor 1002. The controller 1001 is used to control the battery device 200 to supply power to the motor 1002, for example, to meet the power needs of the vehicle 100 during starting, navigation, and driving.

[0104] In some embodiments, the battery device 200 can not only serve as the operating power source for the vehicle 100, but also as the driving power source for the vehicle 100, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 100.

[0105] Please refer to Figure 2 This application provides a battery device 200. The battery device 200 may include one or more battery cell assemblies 30 for providing voltage and capacity. The battery cell assembly 30 may include a plurality of battery cells 31, which are connected in series, parallel, or mixed connection via a busbar.

[0106] In some embodiments, the battery device 200 includes a battery management system, which is a core component responsible for monitoring and managing the state of individual battery cells 31. Its main functions include: real-time monitoring of parameters such as voltage, current, and temperature of individual battery cells 31 to ensure that the battery is in a safe working state; balancing the charge of each individual battery cell 31 in the battery cell assembly 30 through active or passive means to extend the battery life; controlling and regulating the temperature of individual battery cells 31 to avoid performance degradation or safety risks caused by overheating or overcooling; detecting faults in the battery cell assembly 30 and the battery management system itself, and taking corresponding protective measures, such as cutting off power and alarming.

[0107] As an example, the battery management system can be housed in the enclosure 20 to support and protect the battery management system.

[0108] As an example, the battery management system can also be located outside the housing 20 and connected to the battery cells 31, sensors and other devices inside the housing 20 via wires.

[0109] In some embodiments, the battery cell assembly 30 is typically formed by arranging multiple battery cells 31. Each battery cell 31 can be a rechargeable battery, meaning it can be recharged after discharge to activate its active materials and continue to be used. The battery cell 31 can be a lithium-ion battery, sodium-ion battery, sodium-lithium-ion battery, lithium metal battery, sodium metal battery, lithium-sulfur battery, magnesium-ion battery, nickel-metal hydride battery, nickel-cadmium battery, lead-acid battery, etc., and this application embodiment is not limited to these types.

[0110] As an example, the battery cell assembly 30 can be a battery module, which is formed by arranging and fixing multiple battery cells 31 into an independent module. As an example, the battery module can be formed by bundling multiple battery cells 31 together with cable ties.

[0111] In some embodiments, the battery device 200 may be a battery pack, which includes a housing 20 and one or more battery cell assemblies 30, the battery cell assemblies 30 being housed in the housing 20.

[0112] As an example, the battery cell assembly 30 can be a battery module, which can be housed in the housing 20 by fixing the battery module in the housing 20.

[0113] As an example, the battery cell assembly 30 can also be housed in the housing 20 by directly fixing multiple battery cells 31 to the housing 20.

[0114] In some embodiments, the housing 20 has an internal receiving space 201 to accommodate the battery cell assembly 30. The housing 20 can be made of a material with a certain degree of hardness and strength, so that the housing 20 is not easily deformed when subjected to compression or impact, enabling the battery device 200 to have higher structural strength and improved reliability. The material of the housing 20 can be various, including but not limited to aluminum, stainless steel, aluminum alloy, iron, or plastic.

[0115] In some embodiments, the housing 20 may be part of the chassis structure of the vehicle 100. For example, a portion of the housing 20 may be at least a portion of the floor of the vehicle 100, or a portion of the housing 20 may be at least a portion of the crossbeams and longitudinal beams of the vehicle 100.

[0116] As an example, the housing 20 may include a first portion 202 and a second portion 203, which overlap each other, together defining a receiving space 201 for accommodating the battery cell assembly 30. The second portion 203 may be a hollow structure with one open end, and the first portion 202 may be a plate-like structure, covering the open side of the second portion 203 so that the first portion 202 and the second portion 203 together define the receiving space 201. Alternatively, both the first portion 202 and the second portion 203 may be hollow structures with one open side, with the open side of the first portion 202 covering the open side of the second portion 203. Of course, the housing 20 formed by the first portion 202 and the second portion 203 can be of various shapes, such as a cylinder, a cuboid, etc.

[0117] As an example, the housing 20 may include a top cover, a frame, and a bottom plate. The top cover and the bottom plate are respectively connected to the frame, so that the interior of the housing 20 forms an enclosed space to house the battery cell assembly 30.

[0118] In some embodiments, such as Figure 2 As shown, the battery device 200 may also include a power distribution device 10, which may be housed within the housing space 201 of the casing 20 or located outside the housing space 201 of the casing 20. The power distribution device 10 is electrically connected to the battery cell assembly 30 and is used to control the charging and discharging of the battery device 200.

[0119] The following, in conjunction with the appendix Figures 3 to 10 The power distribution device 10 of this application will be described in detail below with specific embodiments. In the figures, the first direction is the direction indicated by arrow F1. As an example, when the power distribution device 10... Figure 3 When placed in the position shown, the first direction is the height direction of the battery device 200.

[0120] Please refer to the following: Figures 3 to 7 This application provides a power distribution device 10, which includes a housing 11, a control board 13, and an electrical connector 14. An electrical component 12 is mounted on the housing 11 and has an electrical connection portion 121 exposed outside the housing 11. The control board 13 is mounted on the housing 11 and disposed on the side of the electrical component 12 along a first direction. The electrical connection portion 121 and the control board 13 are disposed at a distance from each other along the first direction. The electrical connector 14 is disposed between the electrical connection portion 121 and the control board 13. The electrical connector 14 includes an insulating body 14a and a first terminal 145 and a second terminal 146 disposed at opposite ends of the insulating body 14a along the first direction. The first terminal 145 and the second terminal 146 are electrically connected. The first terminal 145 is exposed outside the insulating body 14a and electrically connected to the control board 13. The second terminal 146 is exposed outside the insulating body 14a and is in contact with and electrically connected to the electrical connection portion 121.

[0121] In this embodiment, the power distribution device 10 refers to a collection of various components or parts in a power distribution system used for receiving, distributing, and controlling electrical energy. It can achieve power distribution, not only rationally allocating high-voltage electrical energy from the power supply end to multiple different power branches or loads, but also for circuit control, such as controlling the on / off state of the circuit to achieve power distribution and management. It can also provide protection functions in the circuit, such as automatically cutting off the circuit when faults such as overload, short circuit, or leakage occur. Furthermore, it can perform energy measurement and detection in the circuit, such as measuring and monitoring parameters such as current, voltage, and power to understand the circuit's operating status. For example, the power distribution device 10 is used in the battery device 200 to distribute and manage the electrical energy of the battery cells 31 within the battery device 200. The power distribution device 10 can be equipped with electrical components 12 such as relays, circuit breakers, contactors, fuses, current transformers, voltage transformers, and pre-charge resistors to achieve relevant circuit control.

[0122] In the embodiments of this application, such as Figure 3 and Figure 4 As shown, the power distribution device 10 includes a housing 11, a control board 13, and electrical components 12.

[0123] The housing 11 is the shell structure of the entire power distribution device 10. It can be an external outer shell structure to protect the internal structural components, or an internal shell structure to support the internal electrical components and other structural components. The housing 11 can be made of inorganic insulating materials, organic insulating materials, or composite insulating materials. Electrical components 12, such as relays, circuit breakers, contactors, fuses, current transformers, voltage transformers, and pre-charge resistors, are installed inside the housing 11.

[0124] The control board 13 is a core electronic component with functions of circuit on / off control, electrical signal acquisition and processing. It typically uses a printed circuit board (PCB) as its substrate, on which various microcontrollers, chips, sampling resistors, communication interfaces, and other electronic components are integrated. On one hand, the control board 13 receives external commands or internal monitoring signals and outputs control signals to drive relays, fuses, and other electrical components 12 to operate, thereby enabling or disabling the battery circuit and power consumption circuit, ensuring the safe operation of the power distribution system. On the other hand, the control board 13 can also acquire the operating status signals of the controlled circuit (such as the energized state of relays and the on / off state of fuses) and electrical parameter signals such as current and voltage. After preliminary processing of the acquired signals, it transmits them to the upper-level control system, such as the battery management system. For example, the control board 13 can be a battery management unit (BMU), a cell supervisory controller (CSC), or a circuit board integrating battery management and battery signal processing. The control board 13 is mounted on the housing 11 and positioned along a first direction on the side of the electrical component 12. The control board 13 avoids the electrical component 12, reducing structural interference and the risk of internal short circuits. The first direction refers to the arrangement direction of the control board 13 and the electrical component 12. For example, the first direction could be the height direction of the power distribution device 10, with the control board 13 located at the top or bottom of the electrical component 12 along the height direction. Figure 3 and Figure 4 As shown, or, the first direction can also be the width direction of the power distribution device 10, with the control board 13 located on the side of the electrical component 12 along the width direction.

[0125] In the embodiments of this application, such as Figure 4 , Figure 6 and Figure 7 As shown, the power distribution device 10 also includes an electrical connector 14. The electrical component 12 is installed inside the housing 11 and has an electrical connection portion 121 exposed outside the housing 11. For example, the electrical connection portion 121 can be a metal pin or metal terminal exposed outside the housing 11. The electrical connector 14 electrically connects the control board 13 and the electrical connection portion 121 of the electrical component 12, thereby realizing the transmission of current and electrical signals.

[0126] The electrical connector 14 includes an insulating body 14a and a first terminal 145 and a second terminal 146 disposed on the insulating body 14a. The first terminal 145 and the second terminal 146 are respectively disposed at opposite ends of the insulating body 14a along a first direction. The first terminal 145 and the second terminal 146 are connected to each other to realize the transmission of current and electrical signals. A portion of the first terminal 145 is exposed outside the insulating body 14a and is electrically connected to the control board 13. A portion of the second terminal 146 is exposed outside the insulating body 14a and is in contact with and electrically connected to the electrical connection part 121, thereby enabling current to be transmitted between the control board 13 and the electrical component 12 through the electrical connector 14.

[0127] Understandably, the insulating body 14a is an insulating component made of insulating materials such as rubber or plastic, and the first terminal 145 and the second terminal 146 are conductive components made of conductive materials such as metal, conductive polymer, or conductive graphite. The first terminal 145 is electrically connected to the control board 13, for example, by welding, bolting, or crimping. The second terminal 146 is in contact with the electrical connection part 121 and is electrically connected to it, meaning that the electrical connection part 121 is in direct contact with the corresponding second terminal 146, and electrical conduction is achieved through this direct contact. Current is directly transmitted between the contacting components. For example, the second terminal 146 can be in direct contact with the electrical connection part 121 and be electrically connected by abutment, crimping, welding, or bolting.

[0128] The power distribution device 10 of this application embodiment includes a housing 11, an electrical component 12, a control board 13, and an electrical connector 14. The electrical component 12 is mounted on the housing 11 and has an electrical connection portion 121 exposed relative to the housing 11. The control board 13 is located on the side of the electrical component 12. The electrical connection portion 121 is spaced apart from the control board 13. A portion of the first terminal 145 located at one end of the insulating body 14a of the electrical connector 14 is exposed outside the insulating body 14a and electrically connected to the control board 13. A portion of the second terminal 146 located at the other end of the insulating body 14a is exposed outside the insulating body 14a and contacts and is electrically connected to the electrical connection portion 121 of the electrical component 12.

[0129] Thus, the electrical connector 14 can be integrated into the space between the electrical connection portion 121 of the control board 13 and the electrical component 12, and is electrically connected to the control board 13 through the first terminal 145 and to the electrical connection portion 121 through the second terminal 146, thereby electrically conducting the electrical component 12 and the control board 13 to realize the transmission of current and electrical signals. By replacing the traditional adapter harness with an electrical connector 14, the electrical connector 14 can be integrated into the space between the electrical connection part 121 of the electrical component 12 and the control board 13. The electrical connector 14 has a more compact structure, eliminating the need for complex wiring and redundant space for wire harness bending. This helps optimize the internal space layout of the housing 11, reducing the overall size and weight of the power distribution device 10, which meets the requirements for lightweighting and miniaturization of the power distribution device 10. Furthermore, the insulating body 14a of the electrical connector 14 can position the first terminal 145 and the second terminal 146. During assembly, the first terminal 145 of the electrical connector 14 is connected to the control board 13, and the second terminal 146 is kept in contact with the electrical connection part 121 of the electrical component 12. This establishes a stable and reliable electrical connection without the need for complex wiring operations, simplifying the assembly steps of the power distribution device 10 and improving assembly efficiency.

[0130] In some embodiments, the electrical component 12 is at least one of a relay, a fuse, and a pre-charge resistor.

[0131] As an example, the power distribution unit 10 includes an electrical element 12, which may be a relay, a fuse, or a pre-charge resistor.

[0132] As an example, the power distribution device 10 includes a variety of electrical components 12, such as relays, fuses and pre-charge resistors, or relays and fuses, or relays and pre-charge resistors, etc.

[0133] In a specific embodiment, the relay can be one or more of the following: a main positive relay, a main negative relay, a pre-charge relay, or a fast-charge relay.

[0134] In some embodiments, such as Figures 3 to 5 As shown, the electrical component 12 has two spaced electrical connection parts 121, and the two electrical connection parts 121 are respectively electrically connected to the control board 13 through an electrical connector 14.

[0135] In this embodiment, the two electrical connection portions 121 of the electrical component 12 can be a positive connection portion and a negative connection portion, respectively, to be connected to the positive and negative contacts on the control board 13. The two electrical connection portions 121 are respectively connected to the corresponding positions of the control board 13 through an electrical connector 14, and there is no interference between them, so that the electrical component 12 can be stably and reliably connected to the control circuit of the control board 13.

[0136] In some embodiments, such as Figure 4 , Figure 6 and Figure 7 As shown, the housing 11 has a fourth groove 111 with an opening opposite to the control plate 13. At least a portion of the electrical connection part 121 is located in the fourth groove 111, and the end of the insulating body 14a opposite to the electrical connection part 121 is inserted into the fourth groove 111.

[0137] In this embodiment, a fourth slot 111 is provided in the housing 11 of the power distribution device 10. The opening of the fourth slot 111 is provided towards the control board 13 along the first direction. Part or all of the electrical connection portion 121 of the electrical component 12 is located in the slot space of the fourth slot 111. The insulating body 14a is inserted from the slot opening of the fourth slot 111. The second terminal 146 abuts against the electrical connection portion 121 in the fourth slot 111.

[0138] Thus, the fourth groove 111 can position the electrical connector 14 during assembly. During assembly, the end of the insulating body 14a facing the electrical connection part 121 is inserted into the fourth groove 111. At the same time, the fourth groove 111 can also limit the electrical connector 14, reduce the risk of the electrical connector 14 shaking, and improve the reliability and stability of the electrical connection between the electrical component 12 and the control board 13.

[0139] Understandably, at least a portion of the wall of the fourth groove 111 is in contact with the side wall of the insulating body 14a, such that there is a mutual contact portion between the side wall of the insulating body 14a and the wall of the fourth groove 111, thereby enabling the fourth groove 111 to effectively position and limit the electrical connector 14.

[0140] As an example, either the wall of the fourth groove 111 or the side wall of the insulating body 14a may be provided with ribs or the like.

[0141] In some embodiments, such as Figure 6 and Figure 7 As shown, the second terminal 146 is elastically connected to the insulating body 14a and abuts against the electrical connection portion 121.

[0142] In this embodiment, the second terminal 146 is elastically connected to the insulating body 14a. The elastic connection refers to the connection between two components through a structure or component with elastic deformation capability. The connected components can undergo relative displacement or angular deflection within a certain range, thereby automatically adapting to unevenness, dimensional deviation or assembly error between the connected components during installation, thereby improving the stability and reliability of the connection. The second terminal 146 is elastically connected to the insulating body 14a. For example, the second terminal 146 can be connected to the insulating body 14a through an elastic structure or component such as a spring or an elastic pad, that is, the second terminal 146 is directly elastically connected to the insulating body 14a; or, the second terminal 146 can also be connected to the first terminal 145 through an elastic structure or component such as a spring or an elastic pad, that is, the second terminal 146 is indirectly elastically connected to the insulating body 14a through the first terminal 145; or, the second terminal 146 can also be a structure with elastic deformation capability, such as an elastic arm, part of which is inserted into the insulating body 14a and connected to the first terminal 145, and the other part extends outward to the outside of the insulating body 14a to form an elastic cantilever with elastic deformation capability.

[0143] Based on this, the second terminal 146 abuts against the electrical connection part 121, that is, the part of the second terminal 146 exposed outside the insulating body 14a elastically abuts against the electrical connection part 121. When the electrical connector 14 is assembled into the space between the electrical connection part 121 and the control board 13, the second terminal 146 can actively adhere to and press against the electrical connection part 121 under the action of its own elastic force or the elastic force of the external elastic component, and achieve a reliable electrical connection between the two by relying on physical pressure, so as to realize the transmission of current and signal. There is no need for additional connection processes such as welding, crimping or bolt fastening between the second terminal 146 and the electrical connection part 121, which simplifies the assembly steps.

[0144] Please combine them together Figure 6 and Figure 7 ,as well as Figures 8 to 10 .

[0145] In some embodiments, such as Figure 6 , Figure 7 and Figure 10 As shown, the electrical connector 14 also includes an elastic member 147 disposed on the insulating body 14a, the first terminal 145 is fixedly connected to the insulating body 14a, and the second terminal 146 is movably disposed on the insulating body 14a and elastically connected to the first terminal 145 through the elastic member 147.

[0146] In this embodiment, the first terminal 145 is fixedly connected to the insulating body 14a, and the second terminal 146 is movably connected to the insulating body 14a and connected to the first terminal 145 through the elastic member 147, thereby realizing the mutual connection between the second terminal 146 and the insulating body 14a.

[0147] In a specific embodiment, the elastic element 147 can be a conductive component, allowing the second terminal 146 to be directly electrically connected to the first terminal 145 via the elastic element 147. This helps to simplify the overall structural design of the electrical connector 14 and simplify assembly operations. For example, the elastic element 147 can be a conductive spring or a conductive elastic washer.

[0148] Of course, in other embodiments, the elastic element 147 can also be an insulating element, and the second terminal 146 is elastically connected to the first terminal 145 only through the elastic element 147. The second terminal 146 and the first terminal 145 are then connected to each other through other structures. For example, the elastic element 147 can be an elastic rubber pad or an elastic foam pad.

[0149] In a specific embodiment, such as Figure 7 , Figure 8 and Figure 10 As shown, the first terminal 145 is fixedly connected to the insulating body 14a. For example, the first terminal 145 can be integrally injection molded with the insulating body 14a as an insert, that is, the first terminal 145 is integrally embedded in the insulating body 14a. There is no need for secondary assembly between the two, which also helps to simplify the assembly steps. At the same time, the first terminal 145 and the insulating body 14a are integral parts, which can also improve the connection strength between the two, thereby improving the connection reliability with the second terminal 146 and improving the reliability of conductivity.

[0150] Of course, in other embodiments, the second terminal 146 can also be connected and fixed to the insulating body 14a by means of snap-fit, screw connection or other methods.

[0151] In a specific embodiment, such as Figure 7 , Figure 8 and Figure 10 As shown, the insulating body 14a has a first connecting end 141 disposed opposite to the electrical connection portion 121 along a first direction. The first connecting end 141 is provided with a cavity 142 with an opening opposite to the connecting portion. An elastic member 147 is disposed in the cavity 142. A portion of the first terminal 145 and a portion of the second terminal 146 extend into the cavity 142 and are connected to the elastic member 147. The second terminal 146 is able to slide relative to the cavity 142.

[0152] In this embodiment, a cavity 142 is provided at the first connection end 141 of the insulating body 14a near the electrical connection portion 121. A portion of the second terminal 146 is disposed in the cavity 142, and a portion of the first terminal 145 is also located in the cavity 142. The second terminal 146 is elastically connected to the first terminal 146 through an elastic member 147 also disposed in the cavity 142. Thus, the cavity 142 accommodates the elastic member 147 and a portion of the first terminal 145 and the second terminal 146. The second terminal 146 is inserted into the cavity 142 and can slide relative to the cavity 142, thereby allowing the second terminal 146 to adjust its own posture under the elastic force of the elastic member 147 to maintain reliable contact with the electrical connection portion 121.

[0153] In a specific embodiment, the elastic member 147 elastically connects the first terminal 145 and the second terminal 146 along the first direction, and the second terminal 146 abuts against the electrical connection portion 121 along the first direction.

[0154] Thus, the second terminal 146 can move at least along the first direction, thereby always remaining in contact with the electrical connection portion 121, and the reliability of the connection between the two is improved.

[0155] In specific implementation, such as Figure 7 , Figure 8 and Figure 10 As shown, the sidewall of the second terminal 146 is spaced apart from the cavity wall of the cavity 142. This allows the second terminal 146 to move flexibly under the elastic force of the elastic member 147. Furthermore, there is a certain gap between the second terminal 146 and the cavity wall of the cavity 142. The second terminal 146 can not only move in the first direction, but also float in other directions, which allows the second terminal 146 to better compensate for the assembly tolerance between itself and the electrical connection part 121, thereby improving the adaptability and versatility of the electrical connection part 14.

[0156] In some embodiments, such as Figures 7 to 9 As shown, along the first direction, the end of the second terminal 146 away from the first terminal 145 protrudes from the insulating body 14a, and the size of the protruding portion is 0.5mm to 4.0mm.

[0157] In this embodiment, when the electrical connector 14 is electrically connected to the control board 13 and the electrical connection part 121, the end of the second terminal 146 has a certain protrusion along the first direction, that is, along the arrangement direction of the control board 13 and the electrical components 12, from the end of the insulating body 14a. The insulating body 14a does not interfere with the connection between the second terminal 146 and the electrical connection part 121, so that the second terminal 146 can stably and reliably maintain its contact with the electrical connection part 121.

[0158] Furthermore, the length of the protruding portion of the second terminal 146 from the insulation body is controlled within the size range of 0.5mm to 4.0mm. When the electrical connector 14 is electrically connected to the control board 13 and the electrical connection part 121, such as Figure 7 As shown, on the one hand, the minimum protrusion size of the second terminal 146 is not less than 0.5mm, which reduces the risk that the second terminal 146 may not be able to reach the electrical connection part 121 due to the processing error of the insulating body 14a or the assembly gap, or that the contact resistance may be too large and the signal transmission may be unstable due to insufficient contact area; on the other hand, the maximum protrusion size of the second terminal 146 does not exceed 4.0mm, which reduces the risk of bending due to the excessive length and insufficient rigidity of the second terminal 146 when it abuts against the electrical connection part 121, and at the same time, it can keep the overall volume of the electrical connector 14 within a small range, which helps to reduce the overall volume of the power distribution device 10.

[0159] In a specific embodiment, along the first direction, the size of the portion of the second terminal 146 protruding from the insulating body 14a at the end away from the first terminal 145 can be 0.5mm, 0.8mm, 1.0mm, 1.2mm, 1.4mm, 1.5mm, 1.8mm, 2.0mm, 2.2mm, 2.5mm, 2.8mm, 3.0mm, 3.2mm, 3.5mm, 3.8mm, or 4.0mm, etc. The specific size is not uniquely limited here, and can be selected according to the actual situation and needs during design.

[0160] It is understandable that when electrical connector 14 is not assembled, such as Figures 8 to 10 As shown, since the elastic element 147 is in an elastically extended state, the size of the portion of the second terminal 146 protruding from the insulating body 14a is at its maximum. For example, as... Figure 9 As shown, the dimension L of the portion of the second terminal 146 protruding from the insulating body 14a can be 4.0 mm.

[0161] In some embodiments, such as Figure 6 , Figure 7 and Figure 10 As shown, along the first direction, the first terminal 145 has a first groove 1451 at one end facing the electrical connection portion 121, the elastic member 147 is disposed in the first groove 1451 and one end is connected to the groove wall of the first groove 1451, the second terminal 146 is embedded in the first groove 1451 at one end away from the electrical connection portion 121 and is connected to the other end of the elastic member 147, and the other end of the second terminal 146 extends out of the first groove 1451.

[0162] In this embodiment, a first groove 1451 is provided at the end of the first terminal 145 facing the electrical connection portion 121, and an elastic member 147 is disposed in the groove space of the first groove 1451. The end of the second terminal 146 away from the electrical connection portion 121 is inserted into the first groove 1451 and connected to the elastic member 147. In this way, the second terminal 146 and the first terminal 145 are elastically connected to form an integral assembly. That is, the first terminal 145, the second terminal 146 and the elastic member 147 can be connected into an integral part and then connected and fixed to the insulating body 14a, which helps to simplify the assembly process. In addition, since part of the second terminal 146 is inserted into the interior of the first terminal 145, the electrical connection area between the two is increased, and the reliability of the electrical connection is improved.

[0163] As an example, after the second terminal 146 is elastically connected to the first terminal 145, the first terminal 145, the second terminal 146 and the elastic element 147, which are connected as a whole, are integrally injection molded with the insulating body 14a as inserts.

[0164] In some embodiments, such as Figure 7 and Figure 10 As shown, the side wall of the second terminal 146 is provided with a first protrusion 1461, and the groove wall of the first groove 1451 is provided with a second protrusion 1452. The first protrusion 1461 is located in the first groove 1451 and is located on the side of the second protrusion 1452 along the first direction.

[0165] In this embodiment, a first protrusion 1461 and a second protrusion 1452 are respectively provided on the side wall of the second terminal 146 and the groove wall of the first groove 1451 to cooperate with each other. The first protrusion 1461 is located in the first groove 1451 and on the side of the second protrusion 1452. The second protrusion 1452 can restrict the displacement of the first protrusion 1461 along the first direction, thereby reducing the risk of the second terminal 146 disengaging from the first terminal 145 and improving the assembly stability and reliability of the second terminal 146 and the first terminal 145.

[0166] In some embodiments, such as Figure 7 and Figure 10 As shown, the end of the second terminal 146 located in the first groove 1451 is provided with a second groove 1462, and the end of the elastic member 147 connected to the second terminal 146 is embedded in the second groove 1462.

[0167] In this embodiment, a second groove 1462 is provided at the end of the second terminal 146 that is inserted into the first groove 1451. The second groove 1462 is used for the end of the elastic member 147 to be fitted and embedded, so that the end of the elastic member 147 connected to the second terminal 146 can be engaged in the second groove 1462, thereby improving the connection strength and stability between the elastic member 147 and the second terminal 146.

[0168] The second groove 1462 can be a groove provided on the end face of the second terminal 146, and the end of the elastic member 147 is inserted into the second groove 1462 along the first direction; or, the second groove 1462 can also be a groove provided on the side wall of the second terminal 146, and when the elastic member 147 is a hollow sleeve-shaped structure such as a cylindrical spring, its end can be inserted into the second groove 1462 from the side, thereby achieving sleeve connection with the second terminal 146.

[0169] In some embodiments, such as Figure 6 , Figure 7 and Figure 10 As shown, the insulating body 14a also has a second connection end 143 disposed opposite to the control board 13 along a first direction, and one end of the first terminal 145 away from the second terminal 146 extends out from the second connection end 143 and is electrically connected to the control board 13.

[0170] In this embodiment, the terminal of the first terminal 145 away from the electrical connection portion 121 extends from the second connection end 143 of the insulating body 14a. That is, the end of the first terminal 145 extends to the outside of the insulating body 14a and is electrically connected to the control board 13. This can reduce the risk of the insulating body 14a interfering with the interconnection operation between the first terminal 145 and the control board 13. Furthermore, the connection of the first terminal 145 to the control board 13 in the external space of the insulating body 14a can also reduce the difficulty of the connection operation and help improve the electrical connection efficiency.

[0171] In some embodiments, such as Figure 4 , Figure 6 and Figure 7 As shown, the control board 13 has a connection hole 131 at the position opposite to the second connection end 143, and the second terminal 146 is inserted into the connection hole 131 and soldered to the control board 13.

[0172] In this embodiment, the control board 13 is provided with a connection hole 131. The end of the first terminal 145 can be adapted to be inserted into the connection hole 131, so that the first terminal 145 and the control board 13 can achieve a limiting connection. Furthermore, the part of the first terminal 145 inserted into the connection hole 131 can also be soldered to the control board 13 at the position of the connection hole 131. The space inside the connection hole 131 can also accommodate some solder, thereby improving the electrical connection strength and reliability between the first terminal 145 and the control board 13.

[0173] In a specific embodiment, such as Figure 4 , Figure 6 and Figure 7 As shown, along the first direction, the second connection end 143 abuts against the control board 13.

[0174] That is, along the first direction, the end of the insulating body 14a facing the control board 13 abuts against the bottom surface of the control board 13 facing the electrical component 12, and the electrical connector 14 is sandwiched between the electrical connection portion 121 of the control board 13. The probability of the insulating body 14a moving is reduced, the reliability of the electrical connector 14 connecting the control board 13 and the electrical connection portion 121 is improved, and the insulating body 14a can also support the control board 13, reducing the risk of displacement of the control board 13 and improving the assembly stability of the housing.

[0175] In some embodiments, the insulating body 14a is a cylindrical structure with its center line parallel to the first direction.

[0176] Thus, the two ends of the insulating body 14a along the first direction can be positioned by the control plate 13 and the housing 11 or the electrical connection part 121 respectively, thereby clamping the insulating body 14a between the control plate 13 and the housing 11 or the electrical connection part 121, and fixing its position through this clamping action, which helps to further improve the installation firmness of the electrical connection 14, thereby improving the reliability and stability of the electrical connection.

[0177] For example, in a specific embodiment, the first connecting end 141 of the insulating body 14a is inserted into the fourth groove 111 provided in the housing 11, the second connecting end 143 abuts against the bottom surface of the control board 13, and the insulating body 14a is sandwiched between the control board 13 and the housing 11.

[0178] In a specific embodiment, the insulating body 14a can be a cylinder, a cube, a frustum, or a truncated pyramid, etc.

[0179] In some embodiments, such as Figure 6 , Figure 7 and Figure 10 As shown, the side wall of the cavity 142 is provided with a third protrusion 1421, and the side wall of the first terminal 145 is provided with a fourth protrusion 1453. Along the first direction, the fourth protrusion 1453 is attached to the side of the third protrusion 1421 facing the control board 13.

[0180] In this embodiment, the fourth protrusion 1453, through its limiting cooperation with the third protrusion 1421, enables the insulating body 14a to restrict the first terminal 145 from moving toward the electrical connection portion 121 in the first direction via the third protrusion 1421. Even if the first terminal 145 is reassembled and fixed with the insulating body 14a, it can still limit the displacement in the first direction via the third protrusion 1421, thereby reducing the risk of the first terminal 145 moving toward the electrical connection portion 121 and detaching from the control board 13, making the connection between the first terminal 145 and the control board 13 more stable and reliable.

[0181] In some embodiments, such as Figure 6 and Figure 7As shown, the electrical connection part 121 has an electrical connection surface 1211 exposed outside the housing 11 and disposed opposite to the control plate 13, and the second terminal 146 is in contact with and electrically connected to the electrical connection surface 1211.

[0182] In this embodiment, the electrical connection portion 121 has an electrical connection surface 1211 facing the control board 13. The electrical connection surface 1211 is exposed relative to the housing 11. The end of the second terminal 146 away from the control board 13 contacts the electrical connection portion 121, thereby achieving an electrical connection with the electrical connection portion 121. Thus, the second terminal 146 and the electrical connection portion 121 have point-to-surface or surface-to-surface contact, which reduces the risk of connection instability or failure due to misalignment or deformation of the end of the first terminal 145 or the electrical connection portion 121. This improves the reliability of the electrical connection, reduces alignment difficulty, and increases assembly efficiency.

[0183] In some embodiments, such as Figure 6 and Figure 7 As shown, the electrical connection surface 1211 is perpendicular to the first direction.

[0184] In this embodiment, the second terminal 146 is perpendicular to the electrical connection surface 1211 along the first direction, which reduces the risk of misalignment due to structural misalignment. Furthermore, the perpendicularity of the electrical connection surface 1211 to the first direction increases the effective contact area of ​​the electrical connection portion 121 for electrically connecting the second terminal 146, thereby helping to reduce internal resistance and improve connection stability.

[0185] In some embodiments, the area of ​​the electrical connection surface 1211 is 0.5 cm². 2 ~1.0cm 2 .

[0186] In this way, the area of ​​the electrical connection surface 1211 is controlled within the above-mentioned range. The electrical connection surface 1211 has sufficient area to be electrically connected to the second terminal 146, while the overall volume of the power distribution device 10 will not increase due to the excessive size of the electrical connection surface 1211.

[0187] In a specific embodiment, the area of ​​the electrical connection surface 1211 can be 0.5 cm². 2 0.55 cm 2 0.6 cm 2 0.7cm 2 0.8 cm 2 0.85 cm 2 0.9 cm 2 Or 1.0 cm 2 The specific area and dimensions of the electrical connection surface 1211 are not uniquely limited here; they can be selected as needed during the design process.

[0188] In some embodiments, such as Figure 7 , Figure 8 and Figure 10 As shown, the surface of the second terminal 146 opposite to the electrical connection surface 1211 is a convex arc surface 1463. With the first direction as the projection direction, the projection of the convex arc surface 1463 is located within the projection range of the electrical connection surface 1211.

[0189] In this embodiment, the end of the second terminal 146 facing the electrical connection surface 1211 is a convex arc end. The elastic force of the elastic member 147 can be concentrated along the first direction at the top position of the convex arc surface 1463, allowing the second terminal 146 to better press against the electrical connection surface 1211, thereby improving the connection strength between the two. Furthermore, the projection of the convex arc surface 1463 is located within the projection range of the electrical connection surface 1211, that is, the convex arc surface 1463 can be completely opposite to the electrical connection surface 1211 along the first direction, allowing the second terminal 146 to abut against the electrical connection surface 1211 at the middle, thereby further reducing the alignment difficulty and improving the connection stability.

[0190] In some embodiments, the electrical connection surface 1211 is a gold-plated surface covering the surface of the electrical connection portion 121; and / or, the convex arc surface 1463 is a gold-plated surface covering the end face of the second terminal 146.

[0191] In this way, at least one of the two surfaces that come into contact with each other, namely the electrical connection surface 1211 of the electrical connection portion 121 and the convex arc surface 1463 of the second terminal 146, is set as a gold-plated surface, thereby further improving the contact performance of the two contact surfaces and reducing the risk of wear and increased impedance due to vibration or impact.

[0192] As an example, the electrical connection surface 1211 is a gold-plated surface covering the surface of the electrical connection portion 121; or, the convex arc surface 1463 is a gold-plated surface covering the end face of the second terminal 146; or, the electrical connection surface 1211 is a gold-plated surface covering the surface of the electrical connection portion 121, and the convex arc surface 1463 is a gold-plated surface covering the end face of the second terminal 146.

[0193] In a specific embodiment, the exposed surface of the electrical connection portion 121 that is opposite to the control board 13 can be gold-plated, or the end face of the second terminal 146 that is opposite to the electrical connection portion 121 can be gold-plated.

[0194] In some embodiments, such as Figure 4 , Figure 8 and Figure 10As shown, the electrical connector 14 includes a plurality of second terminals 146, which are spaced apart on the insulating body 14a. The electrical connection surface 1211 is in contact with and electrically connected to each of the second terminals 146.

[0195] In this embodiment, the same electrical connector 14 can provide multiple second terminals 146 that are electrically connected to the electrical connection portion 121 of the electrical component 12, thereby increasing the electrical contact area and improving the stability and reliability of the electrical connection.

[0196] In a specific embodiment, the electrical connector further includes a plurality of first terminals 145, the number of which is the same as the number of second terminals 146. The plurality of first terminals 145 are spaced apart on the insulating body 14a. A first terminal 145 and a second terminal 146 are connected by an elastic member 147 to form a terminal group, i.e., the number of first terminals 145 and second terminals 146 is the same. Thus, an electrical connector 14 includes multiple sets of spaced-apart terminal groups. The same electrical connector 14 can provide multiple first terminals 145 for electrical connection to the control board 13, and also provide multiple second terminals 146 for electrical connection to the electrical connection portion 121 of the electrical component 12, thereby further improving the stability and reliability of the electrical connection.

[0197] In this context, it can be understood that the plurality of first terminals 145 and the plurality of second terminals 146 are spaced apart on the insulating body 14a, meaning that the plurality of first terminals 145 are mutually insulated through the insulating body 14a; and the plurality of second terminals 146 are spaced apart on the insulating body 14a, meaning that the plurality of second terminals 146 are mutually insulated through the insulating body 14a.

[0198] As an example, the electrical connector 14 includes four sets of terminal groups, which are electrically connected to the control board 13 via four first terminals 145 and to the electrical connection part 121 via four second terminals 146; or, the electrical connector 14 includes six sets of terminal groups, which are electrically connected to the control board 13 via six first terminals 145 and to the electrical connection part 121 via six second terminals 146.

[0199] Another embodiment of this application also provides a battery device 200, such as Figure 2 As shown, it includes a battery cell assembly 30 and a power distribution device 10 provided in the above embodiment, and the power distribution device 10 is electrically connected to the battery cell assembly 30.

[0200] The battery device 200 of this embodiment adopts the power distribution device 10 of any of the above embodiments, and therefore has at least all the beneficial effects of the power distribution device 10, which will not be repeated here.

[0201] Another embodiment of this application also provides an electrical device, such as... Figure 1 As shown, the electrical device includes the aforementioned battery device 200, which is used to supply electrical energy to the electrical equipment.

[0202] The power device in this embodiment, since it adopts the battery device 200 of any of the above embodiments, has at least all the beneficial effects of the battery device 200, which will not be repeated here.

[0203] The description of the various embodiments above tends to emphasize the differences between the various embodiments. The similarities or similarities between them can be referred to, and for the sake of brevity, they will not be repeated here.

[0204] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and not to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application, and they should all be covered within the scope of the claims and specification of this application. In particular, as long as there is no structural conflict, the various technical features mentioned in the embodiments can be combined in any way. This application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A power distribution device, characterized by, The utility model relates to a kind of electric appliance, including: Shell; Electric appliance element, is installed in the shell and has exposed electric connection part in the shell; Control panel, is installed in the shell and is located in the side of the electric appliance element along the first direction, the electric connection part is spaced apart from the control panel along the first direction;And Electric connection piece, is located between the electric connection part and the control panel, the electric connection piece includes insulating body and the first terminal and the second terminal being located in the opposite two ends of the insulating body along the first direction, the first terminal and the second terminal are electrically connected, the first terminal is exposed to the insulating body and is electrically connected with the control panel, the second terminal is exposed to the insulating body and is mutually contacted and electrically connected with the electric connection part.

2. The power distribution device of claim 1, wherein, The second terminal is elastically connected to the insulating body and abuts against the electric connection part.

3. The power distribution device of claim 2, wherein, The electric connection piece further includes elastic member provided in the insulating body, the first terminal is fixedly connected to the insulating body, and the second terminal is movably arranged in the insulating body and elastically connected to the first terminal through the elastic member.

4. The power distribution device of claim 3, wherein, The elastic member is a conductive component.

5. The power distribution device of claim 3, wherein, The insulating body has a first connecting end oppositely arranged with the electric connection part along the first direction, the first connecting end is provided with a cavity with an opening opposite to the connecting part, the elastic member is arranged in the cavity, and parts of the first terminal and the second terminal extend into the cavity and are connected with the elastic member, and the second terminal can slide relative to the cavity.

6. The power distribution device of claim 5, wherein, The elastic member elastically connects the first terminal and the second terminal along the first direction, and the second terminal abuts against the electric connection part along the first direction.

7. The power distribution device of claim 5, wherein, The side wall of the second terminal is spaced apart from the cavity wall of the cavity.

8. The power distribution device of claim 5, wherein, Along the first direction, the end of the second terminal away from the first terminal protrudes from the insulating body, and the protruding part has a size of 0.5mm-4.0mm.

9. The power distribution device of claim 6, wherein, Along the first direction, one end of the first terminal towards the electric connection part is provided with a first groove, the elastic member is arranged in the first groove and one end thereof is connected with the groove wall of the first groove, one end of the second terminal away from the electric connection part is embedded in the first groove and connected with the other end of the elastic member, and the other end of the second terminal protrudes out of the first groove.

10. The power distribution device of claim 9, wherein, The side wall of the second terminal is provided with a first protrusion, the groove wall of the first groove is provided with a second protrusion, the first protrusion is located in the first groove and is located at the side of the second protrusion along the first direction.

11. The power distribution device of claim 9, wherein, The end of the second terminal located in the first groove is provided with a second groove, and the end of the elastic member connected with the second terminal is embedded in the second groove.

12. The power distribution device of claim 6, wherein, The insulating body further has a second connecting end oppositely arranged with the control panel along the first direction, and one end of the first terminal away from the second terminal protrudes from the second connecting end and is electrically connected with the control panel.

13. The power distribution device of claim 12, wherein, The position opposite to the second connecting end of the control panel is provided with a connecting hole, the second terminal is inserted into the connecting hole and welded with the control panel.

14. The power distribution device of claim 12, wherein, Along the first direction, the second connecting end abuts against the control panel.

15. The power distribution device of claim 12, wherein, The side wall of the cavity is provided with a third protrusion, and the side wall of the first terminal is provided with a fourth protrusion, which is attached to the third protrusion towards the side of the control panel in the first direction.

16. The power distribution device of any one of claims 1-15, wherein, The first terminal is integrally embedded in the insulating body.

17. The power distribution device of any one of claims 1-15, wherein, The electrical connection part has an electrical connection surface exposed to the shell and arranged opposite to the control panel, and the second terminal is in contact with and electrically connected to the electrical connection surface.

18. The power distribution device of claim 17, wherein, The electric connection surface is perpendicular to the first direction; and / or, the area of the electric connection surface is 0.5cm 2 1.0cm 2 .

19. The power distribution device of claim 17, wherein, The surface of the second terminal opposite to the electrical connection surface is a convex arc surface, and the projection of the convex arc surface in the first direction is within the projection range of the electrical connection surface.

20. The power distribution device of claim 19, wherein, The electrical connection surface is a gold-plated surface covering the surface of the electrical connection part; and / or, the convex arc surface is a gold-plated surface covering the end surface of the second terminal.

21. The power distribution device of claim 17, wherein, The electrical connector includes a plurality of second terminals, and the plurality of second terminals are arranged at intervals in the insulating body, and the electrical connection surface is in contact with and electrically connected to each second terminal.

22. The power distribution device of any one of claims 1-15, wherein, The electrical component has two electrical connection parts arranged at intervals, and the two electrical connection parts are electrically connected to the control panel through one electrical connector respectively.

23. The power distribution device of any one of claims 1-15, wherein, The electrical component is at least one of a relay, a fuse and a pre-charge resistor.

24. The power distribution device of any one of claims 1-15, wherein, The shell is provided with a fourth slot opposite to the control panel, and at least part of the electrical connection part is located in the fourth slot, and the end of the insulating body opposite to the electrical connection part is inserted into the fourth slot.

25. The power distribution device of any one of claims 1-15, wherein, The insulating body is a column structure with a center line parallel to the first direction.

26. A battery device, characterized by The electrical component includes a battery cell assembly and a power distribution device as claimed in any one of claims 1-25, and the power distribution device is electrically connected to the battery cell assembly.

27. An electrical device, comprising: The battery device as claimed in claim 26 is used to supply electrical energy to the electrical device.

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