Battery power distribution unit, battery device, and electric device

Abstract

The application provides a battery power distribution unit, a battery device and a power utilization device. The battery power distribution unit comprises a shell, electronic devices, a conductive row and a liquid cooling plate. One side of the shell is provided with an opening. The electronic devices are installed in the shell. The conductive row is connected to the electronic devices and is arranged in the shell. The liquid cooling plate is provided with a channel for the circulation of a heat exchange medium. The liquid cooling plate is installed on the shell, and a cover of the liquid cooling plate is arranged on the opening. The electronic devices are attached to the liquid cooling plate. The electronic devices are directly cooled by the liquid cooling plate to improve the cooling efficiency, provide a good temperature environment for the operation of the electronic devices, improve the reliability and stability of the operation of the electronic devices, and further improve the working efficiency and reliability of the battery power distribution unit.

Description

Technical Field

[0001] This application belongs to the field of battery technology, and more specifically, relates to a battery power distribution unit, a battery device, and an electrical device. Background Technology

[0002] Energy conservation and emission reduction are key to the sustainable development of the automotive industry, and electric vehicles, due to their energy-saving and environmentally friendly advantages, have become an important component of this sustainable development. For electric vehicles, battery technology is a crucial factor in their development.

[0003] BDU (Battery Distribution Unit): As a key component of the battery system, the thermal management performance of the BDU plays a crucial role in the efficiency and reliability of the battery device. Currently, BDUs typically use heat sinks mounted on their casings for heat dissipation, which results in relatively low heat dissipation efficiency. Utility Model Content

[0004] The purpose of this application is to provide a battery power distribution unit, a battery device, and an electrical device to improve the problem of low heat dissipation efficiency of battery power distribution units in related technologies.

[0005] In a first aspect, embodiments of this application provide a battery power distribution unit, including:

[0006] The housing has an opening on one side;

[0007] Electronic components, installed in the housing;

[0008] The busbar connects to electronic components and is housed within a casing.

[0009] Liquid cooling plate, with internal channels for the flow of heat exchange medium;

[0010] The liquid cooling plate is mounted on the housing and covers the opening, with electronic components attached to the liquid cooling plate.

[0011] In the technical solution of this application embodiment, electronic devices are attached to a liquid cooling plate to directly exchange heat with the electronic devices through the liquid cooling plate, thereby improving heat exchange efficiency and providing a good temperature environment for the operation of electronic devices, thereby improving the reliability and stability of the operation of electronic devices, and further improving the working efficiency and reliability of the battery power distribution unit.

[0012] In some embodiments, the battery power distribution unit includes a heat-conducting component, with electronic devices and a liquid cooling plate respectively attached to both sides of the heat-conducting component.

[0013] By using the above technical solution, heat-conducting components are set up to conduct the heat of electronic devices to the liquid cooling plate, thereby improving the heat exchange efficiency between electronic devices and the liquid cooling plate.

[0014] In some embodiments, the electronic device includes a relay, and the thermal conductive component includes a first thermal conductive sub-component, with the relay and the liquid cooling plate respectively attached to both sides of the first thermal conductive sub-component.

[0015] The above technical solution involves setting up a relay to enable rapid switching of high-voltage electricity in the battery power distribution unit, ensuring its safe operation. Furthermore, the first heat-conducting component is installed to attach the relay to the liquid cooling plate, allowing the liquid cooling plate to directly exchange heat with the relay, thus effectively controlling its temperature, ensuring stable operation, and improving the reliability of the battery power distribution unit.

[0016] In some embodiments, the electronic device includes a pre-charge resistor, and the thermal conductive component includes a second thermal conductive component, wherein the pre-charge resistor and the liquid cooling plate are respectively attached to both sides of the second thermal conductive component.

[0017] By using the above technical solutions, the pre-charge resistor can play a current-limiting role during the operation of the battery power distribution unit, so as to prevent the large current generated when the battery device is powered on from damaging other circuit components. The second heat-conducting component is set to attach the pre-charge resistor to the liquid cooling plate, so that the liquid cooling plate can directly exchange heat with the pre-charge resistor, thereby effectively controlling the temperature of the pre-charge resistor, ensuring stable operation of the pre-charge resistor, and improving the reliability of the battery power distribution unit.

[0018] In some embodiments, the electronic device includes a fuse, and the thermal conductive component includes a third thermal conductive component, with the fuse and the liquid cooling plate respectively attached to both sides of the third thermal conductive component.

[0019] By implementing the above technical solution, a fuse is installed so that during the operation of the battery power distribution unit, especially in the event of an overcurrent fault, it can break the circuit by melting itself, thus protecting the battery device and other high-voltage components from damage. Furthermore, by installing a third heat-conducting component to attach the fuse to the liquid cooling plate, the liquid cooling plate can directly exchange heat with the fuse, thereby effectively controlling the fuse's temperature, ensuring stable operation of the fuse, and improving the reliability of the battery power distribution unit.

[0020] In some embodiments, the conductive busbar is attached to the liquid cooling plate, and an insulating structure is provided between the conductive busbar and the liquid cooling plate.

[0021] By attaching the busbar to the liquid cooling plate, heat can be exchanged directly between the liquid cooling plate and the busbar, thereby reducing the impact of the busbar's heat on electronic devices and ensuring their proper operation. Furthermore, the insulation structure reduces the risk of short circuits in the busbar.

[0022] In some embodiments, the insulating structure includes a thermally conductive member, with a conductive busbar and a liquid cooling plate respectively attached to both sides of the thermally conductive member.

[0023] Through the above technical solution, the insulation structure uses heat-conducting components to conduct the heat of the busbar to the liquid cooling plate, thereby improving the heat exchange efficiency between the busbar and the liquid cooling plate.

[0024] In some embodiments, the distance between the conductive bus and the liquid cooling plate is greater than the distance between the electronic device and the liquid cooling plate.

[0025] By using the above technical solution, the distance between the conductive busbar and the liquid cooling plate can be increased to enhance the insulation distance between them. Furthermore, the thickness of the heat-conducting component can be increased to improve insulation performance.

[0026] In some embodiments, the insulating structure includes an insulating layer disposed on the liquid cooling plate and / or the conductive busbar.

[0027] The above technical solution uses an insulating layer for the insulation structure, which is simple in structure and easy to install.

[0028] In some embodiments, the distance between the conductive bus and the liquid cooling plate is greater than the distance between the electronic device and the liquid cooling plate.

[0029] By using the above technical solution, the distance between the busbar and the liquid cooling plate is increased to improve the insulation performance. In particular, it is more difficult for the liquid cooling plate to come into contact with the busbar under vibration or pressure, thus further improving the insulation performance.

[0030] Secondly, embodiments of this application provide a battery device, including a battery power distribution unit as described in the above embodiments.

[0031] Thirdly, embodiments of this application provide an electrical device, including a battery power distribution unit as described in the above embodiments or a battery device as described in the above embodiments.

[0032] 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

[0033] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or exemplary technologies will be briefly introduced below. 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.

[0034] Figure 1 This is a schematic diagram of the vehicle structure according to some embodiments of this application;

[0035] Figure 2 This is an exploded view of the battery device according to some embodiments of this application;

[0036] Figure 3 This is a schematic diagram of the structure of a battery power distribution unit according to some embodiments of this application;

[0037] Figure 4 This is an exploded structural diagram of the battery power distribution unit of some embodiments of this application;

[0038] Figure 5 This is a schematic diagram of the internal structure of a battery power distribution unit according to some embodiments of this application;

[0039] Figure 6 This is a schematic diagram of the structure of the liquid cooling plate in some embodiments of this application;

[0040] Figure 7 This is an exploded structural diagram of the battery power distribution unit in some other embodiments of this application.

[0041] The main markings in the attached figures are as follows:

[0042] 11. Vehicle; 111. Controller; 112. Motor;

[0043] 200. Battery assembly; 20. Housing; 21. Top cover; 22. Base plate; 23. Frame; 24. Reinforcing beam; 241. Mounting beam; 242. Expansion beam;

[0044] 300, battery cell;

[0045] 400. Battery power distribution unit; 41. Housing; 410. Opening; 42. Liquid cooling plate; 421. Channel; 422. Connecting pipe; 423. Through port; 43. Electronic component; 431. Relay; 432. Precharge resistor; 433. Fuse; 44. Conductor busbar; 45. Thermal conductive component; 451. First thermal conductive component; 452. Second thermal conductive component; 453. Third thermal conductive component; 46. Insulation structure; 461. Thermal conductive member; 47. Fastener. Detailed Implementation

[0046] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0047] 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.

[0048] 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.

[0049] 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 one embodiment 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.

[0050] Unless otherwise specified, all embodiments and optional embodiments of this application can be combined to form new technical solutions.

[0051] Unless otherwise specified, all technical features and optional technical features of this application may be combined to form new technical solutions.

[0052] 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.

[0053] 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.

[0054] 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.

[0055] 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.

[0056] 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.

[0057] 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.

[0058] With the continuous development of the electric vehicle industry, in order to address people's range anxiety and demand for strong power, the charging and discharging power of the entire vehicle is becoming increasingly larger, which places higher demands on the thermal management of the power battery system. As a key component of the battery system, the Battery Unit (BDU) experiences a significant increase in heat during high-rate charging due to the large current flowing through its internal components, including electronic devices. Under prolonged or frequent high-power operation, the temperature of these components can rise sharply, far exceeding their designed operating temperature range. Excessive temperature not only accelerates material aging and shortens the lifespan of components, but can also lead to insulation failure, short circuits, and even fires, posing a significant threat to the safety, reliability, and durability of the battery unit and the entire system. Therefore, the thermal management performance of the BDU plays a crucial role in the efficiency and reliability of the power battery system. Currently, BDUs primarily use heat sinks on their casings to dissipate heat from the internal components, but this method has relatively low heat dissipation efficiency.

[0059] Based on the above considerations, in order to improve the problem of low heat dissipation efficiency of battery power distribution units, this application provides a battery power distribution unit. By providing an opening on one side, electronic components and conductive busbars can be installed in the housing. A liquid cooling plate is placed on the housing to protect the electronic components and together with the housing, forms the outer shell structure of the battery power distribution unit. This allows the liquid cooling plate to directly exchange heat with the inside of the housing to regulate the ambient temperature inside the housing. In addition, the electronic components are attached to the liquid cooling plate so that the liquid cooling plate can directly exchange heat with the electronic components, thereby improving the heat exchange efficiency and providing a good temperature environment for the operation of the electronic components. This improves the reliability and stability of the operation of the electronic components, and thus improves the working efficiency and reliability of the battery power distribution unit.

[0060] In this embodiment of the application, the battery cell can be a secondary battery, which refers to a battery cell that can be recharged to activate the active materials and continue to be used after the battery cell has been discharged.

[0061] The battery cell 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 the embodiments of this application are not limited to this.

[0062] The technical solutions described in the embodiments of this application are applicable to various electrical devices that use individual battery cells, such as electric vehicles, electric toys, power tools, vehicles, ships, and spacecraft. For example, spacecraft include airplanes, rockets, space shuttles, and spacecraft.

[0063] For ease of explanation, an electrical device is provided in one embodiment of this application, which is illustrated using a vehicle as an example.

[0064] Please refer to Figure 1 , Figure 1 This is a schematic diagram of the structure of a vehicle 11 provided in some embodiments of this application. The vehicle 11 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 provided inside the vehicle 11, and the battery device 200 can be located at the bottom, front, or rear of the vehicle 11. The battery device 200 can be used to power the vehicle 11; for example, the battery device 200 can serve as the operating power source for the vehicle 11. The vehicle 11 may also include a controller 111 and a motor 112. The controller 111 is used to control the battery device 200 to supply power to the motor 112, for example, to meet the power needs of the vehicle 11 during starting, navigation, and driving.

[0065] In some embodiments, the battery device 200 can not only serve as the operating power source for the vehicle 11, but also as the driving power source for the vehicle 11, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 11.

[0066] Please refer to Figure 2 This application provides a battery device 200. The battery device 200 may include one or more battery cell assemblies for providing voltage and capacity. The battery cell assembly may include multiple battery cells 300, which are connected in series, parallel, or mixed connection via a busbar.

[0067] In some embodiments, a battery cell assembly is typically formed by arranging multiple battery cells 300.

[0068] As an example, a battery cell assembly can be a battery module, which is formed by arranging and fixing multiple battery cells 300 together. As another example, a battery module can be formed by bundling multiple battery cells 300 together with cable ties.

[0069] In some embodiments, the battery device 200 may be a battery pack, which includes a housing 20 and one or more battery cell assemblies housed within the housing 20.

[0070] As an example, the battery cell assembly can be a battery module, and the battery cell assembly can be housed in the housing 20 by fixing the battery module in the housing 20.

[0071] As an example, the battery cell assembly can also be housed in the housing 20 by directly fixing multiple battery cells 300 to the housing 20.

[0072] In some embodiments, the housing 20 may include a top cover 21, a frame 23, and a bottom plate 22. The top cover 21 and the bottom plate 22 are respectively connected to opposite sides of the frame 23, thereby forming a closed space inside the housing 20 to accommodate the battery cells 300. The frame 23 refers to the partial structure forming the peripheral sidewall of the housing 20, the top cover 21 refers to the plate-like structure forming the top of the housing 20, and the bottom plate 22 refers to the plate-like structure forming the bottom of the housing 20.

[0073] In some embodiments, the housing 20 may include a first housing and a second housing, which are fastened together to form a closed space inside the housing 20 to accommodate the battery cells 300. Here, "closed" refers to covering or shutting down, and can be either sealed or unsealed. The first housing may be a top cover or a bottom plate of the housing 20. Both the first and second housings may also be hollow structures with an opening on one side, with the opening side of the first housing fitting over the opening side of the second housing.

[0074] In some embodiments, the box body 20 includes a reinforcing beam 24 connected to the frame 23. The reinforcing beam 24 is a structural member provided on the box body 20 to increase the structural strength of the box body 20. The reinforcing beam 24 is provided and connected to the frame 23 to enhance the structural strength of the box body 20.

[0075] In some embodiments, the reinforcing beam 24 includes a mounting beam 241, which is fixedly connected to the frame 23 and is used to connect an external device using the battery device 200 to support the battery device 200 on the device.

[0076] In some embodiments, the reinforcing beam 24 includes an expansion beam 242, which is installed inside the housing 20 to increase the structural strength of the housing 20 and can also be used to support the battery cell 300 to limit the expansion deformation of the battery cell 300.

[0077] In some embodiments, the expansion beam 242 may also be connected to the bottom plate 22 of the box 20 to better fix the expansion beam 242 in the box 20.

[0078] In some embodiments, the housing 20 may be part of the vehicle's chassis structure. For example, a portion of the housing 20 may be at least a portion of the vehicle's floor, or a portion of the housing 20 may be at least a portion of the vehicle's crossbeams and longitudinal beams.

[0079] In some embodiments, the battery device 200 includes a battery power distribution unit 400, which is electrically connected to the battery cell 300.

[0080] The Battery Distribution Unit (BDU) is an electrical device used in electric vehicle battery systems. It is primarily responsible for rationally distributing the electrical energy of the battery pack to various electrical devices. It also has functions such as circuit protection, current and voltage monitoring, and distribution control to ensure the safety and stability of the battery system's power supply.

[0081] A battery power distribution unit 400 is provided so that the battery device 200 can be charged and discharged well and safely.

[0082] In some embodiments, the battery power distribution unit 400 is installed in the housing 20 to support and protect the battery power distribution unit 400.

[0083] Please see Figures 3 to 7 According to some embodiments of this application, a battery power distribution unit 400 is provided, including a housing 41, electronic components 43, a conductive busbar 44, and a liquid cooling plate 42. An opening 410 is provided on one side of the housing 41; the electronic components 43 are installed in the housing 41; the conductive busbar 44 connects to the electronic components 43 and is placed within the housing 41; the liquid cooling plate 42 has a channel 421 for the flow of heat exchange medium; the liquid cooling plate 42 is installed on the housing 41 and covers the opening 410, and the electronic components 43 are attached to the liquid cooling plate 42.

[0084] Shell 41 refers to a shell structure with internal chambers. An opening 410 on one side of shell 41 means that an opening 410 is provided on one side wall of shell 41, or that one side of shell 41 is open, thus forming an opening 410 on one side of shell 41. As an example, shell 41 can be a one-piece molded structure for ease of manufacturing. As an example, shell 41 can also be formed by connecting multiple plates through welding, fasteners, or other methods. As an example, shell 41 can be made of metal materials such as aluminum or copper. As an example, shell 41 can be made of materials such as plastic or ceramic.

[0085] Electronic device 43 refers to the device that connects to form the internal circuit structure of the battery power distribution unit 400. Electronic device 43 may include devices such as relay 431, pre-charge resistor 432, and fuse 433.

[0086] The electronic device 43 is installed in the housing 41, which means that the electronic device 43 is placed inside the housing 41 so that the housing 41 can accommodate the electronic device 43 and support and protect the electronic device 43.

[0087] A busbar 44 refers to a sheet or strip structure made of conductive material. Busbar 44 can be made of materials such as copper and aluminum, or other conductive materials such as silver. Using busbar 44 facilitates the passage of large currents and also promotes heat dissipation.

[0088] The conductive bus 44 connects to the electronic device 43 to form the internal circuit structure of the battery power distribution unit 400.

[0089] The conductive busbar 44 being placed inside the housing 41 means that the conductive busbar 44 is placed inside the housing 41 so that the housing 41 can accommodate the conductive busbar 44 and support and protect the conductive busbar 44.

[0090] A liquid-cooled plate 42 refers to a plate that can exchange heat with an object using liquid. The liquid-cooled plate 42 has channels 421 for the flow of the heat exchange medium; that is, the liquid-cooled plate 42 has an internal flow channel structure so that the heat exchange medium can flow through the channels, thereby allowing the heat exchange medium to exchange heat with the outside through the liquid-cooled plate 42. As an example, the liquid-cooled plate 42 can be made of multiple layers of plates pressed together or welded to form the internal channels 421. As an example, fittings can also be installed on heat-conducting pipes to form the channels 421. The liquid-cooled plate 42 can be made of thermally conductive materials such as aluminum or copper. The heat exchange medium can be a liquid such as water or oil, or a gas such as a refrigerant.

[0091] The liquid cooling plate 42 is mounted on the housing 41, meaning that the liquid cooling plate 42 is fixedly connected to the housing 41, and the housing 41 supports the liquid cooling plate 42.

[0092] The liquid cooling plate 42 covering the opening 410 means that the liquid cooling plate 42 is located on the side of the housing 41 where the opening 410 is provided, and the liquid cooling plate 42 covers the opening 410, so that the liquid cooling plate 42 and the housing 41 are combined to form the outer shell structure of the battery power distribution unit 400, thereby reducing the number of parts and reducing costs. The combination allows the liquid cooling plate 42 to directly exchange heat with the internal environment of the housing 41, so as to control the temperature of the internal space of the housing 41.

[0093] The electronic device 43 is attached to the liquid cooling plate 42. This means that the electronic device 43 is directly attached to the liquid cooling plate 42, or the electronic device 43 is attached to the liquid cooling plate 42 at intervals, such as the electronic device 43 being attached to the liquid cooling plate 42 through an adhesive layer.

[0094] In the technical solution of this application embodiment, by attaching the electronic device 43 to the liquid cooling plate 42, the liquid cooling plate 42 directly exchanges heat with the electronic device 43, thereby improving the heat exchange efficiency, providing a good temperature environment for the operation of the electronic device 43, thereby improving the reliability and stability of the operation of the electronic device 43, and further improving the working efficiency and reliability of the battery power distribution unit 400.

[0095] In some embodiments, please refer toFigures 3 to 7 The battery power distribution unit 400 includes a heat-conducting component 45, with electronic components 43 and liquid cooling plates 42 respectively attached to both sides of the heat-conducting component 45.

[0096] Thermally conductive component 45 refers to a structural component made of thermally conductive material. Thermally conductive component 45 can be made of materials such as thermally conductive adhesive layer, thermally conductive rubber, and thermally conductive plastic.

[0097] The two sides of the heat-conducting component 45 are respectively attached to the electronic device 43 and the liquid cooling plate 42. This means that one side of the heat-conducting component 45 is attached to the electronic device 43, and the other side of the heat-conducting component 45 is attached to the liquid cooling plate 42.

[0098] The above technical solution provides a heat-conducting component 45 to conduct the heat of the electronic device 43 to the liquid cooling plate 42, thereby improving the heat exchange efficiency between the electronic device 43 and the liquid cooling plate 42.

[0099] In some embodiments, the heat-conducting component 45 can be made of a flexible material, such as thermally conductive silicone or thermally conductive rubber, to fill the gap between the electronic device 43 and the liquid cooling plate 42. This improves the heat exchange efficiency between the electronic device 43 and the liquid cooling plate 42.

[0100] In some embodiments, the heat-conducting element 45 may also be made of rigid heat-conducting materials such as copper sheets or aluminum sheets.

[0101] In some embodiments, please refer to Figures 3 to 7 The electronic device 43 includes a relay 431, and the heat-conducting component 45 includes a first heat-conducting sub-component 451, with the relay 431 and the liquid cooling plate 42 respectively attached to both sides of the first heat-conducting sub-component 451.

[0102] Relay 431 is a device in a circuit used to automatically or manually cut off current.

[0103] The first heat-conducting component 451 refers to the part on the heat-conducting component 45 that is located at the corresponding position of the relay 431.

[0104] The first heat-conducting component 451 is attached to the relay 431 and the liquid cooling plate 42 on both sides respectively. This means that one side of the first heat-conducting component 451 is attached to the relay 431, and the other side of the first heat-conducting component 451 is attached to the liquid cooling plate 42.

[0105] Through the above technical solution, a relay 431 is set to enable rapid switching of high voltage in the battery power distribution unit 400, so as to ensure the safe operation of the battery power distribution unit 400; and a first heat-conducting component 451 is set to attach the relay 431 to the liquid cooling plate 42, so that the liquid cooling plate 42 can directly exchange heat with the relay 431, thereby effectively controlling the temperature of the relay 431, ensuring stable operation of the relay 431, and improving the reliability of the operation of the battery power distribution unit 400.

[0106] In some embodiments, please refer to Figures 3 to 7 The electronic device 43 includes a pre-charge resistor 432, and the heat-conducting component 45 includes a second heat-conducting component 452, with the pre-charge resistor 432 and the liquid cooling plate 42 respectively attached to both sides of the second heat-conducting component 452.

[0107] The pre-charge resistor 432 is a key current-limiting component in the BDU. Its core function is to suppress the inrush current at the moment of power-on, protect components such as contactors and capacitors in the circuit, and ensure the safe and stable start-up of the system.

[0108] The second heat-conducting component 452 refers to the part on the heat-conducting component 45 that is located at the position corresponding to the pre-charge resistor 432.

[0109] The pre-charge resistor 432 and the liquid cooling plate 42 are respectively attached to the two sides of the second heat-conducting component 452, meaning that one side of the second heat-conducting component 452 is attached to the pre-charge resistor 432 and the other side of the second heat-conducting component 452 is attached to the liquid cooling plate 42.

[0110] Through the above technical solution, the pre-charge resistor 432 can play a current-limiting role during the operation of the battery power distribution unit 400, so as to prevent the large current generated when the battery device 200 is powered on from damaging other circuit components; and the second heat-conducting component 452 is set to attach the pre-charge resistor 432 to the liquid cooling plate 42, so that the liquid cooling plate 42 can directly exchange heat with the pre-charge resistor 432, thereby effectively controlling the temperature of the pre-charge resistor 432, ensuring the stable operation of the pre-charge resistor 432, and improving the reliability of the operation of the battery power distribution unit 400.

[0111] In some embodiments, please refer to Figures 3 to 7 The electronic device 43 includes a fuse 433, and the heat-conducting component 45 includes a third heat-conducting component 453, with the fuse 433 and the liquid cooling plate 42 respectively attached to both sides of the third heat-conducting component 453.

[0112] A 433 fuse is a one-time safety component used in circuits to protect electrical equipment from overcurrent damage. Its core principle is to utilize the thermal effect of current—when the current in the circuit exceeds the rated value, the fusible element (conductive part) of the 433 fuse will melt due to overheating, thereby cutting off the circuit and preventing equipment damage or fire hazards.

[0113] The third heat-conducting component 453 is the part on the heat-conducting component 45 that is located at the position corresponding to the fuse 433.

[0114] The third heat-conducting component 453 is attached to the fuse 433 and the liquid cooling plate 42 on both sides respectively. This means that one side of the third heat-conducting component 453 is attached to the fuse 433, and the other side of the third heat-conducting component 453 is attached to the liquid cooling plate 42.

[0115] Through the above technical solution, a fuse 433 is installed so that during the operation of the battery power distribution unit 400, especially in the event of an overcurrent fault, it will break the circuit by melting itself, protecting the battery device 200 and other high-voltage components from damage. The third heat-conducting component 453 is installed to attach the fuse 433 to the liquid cooling plate 42, so that the liquid cooling plate 42 can directly exchange heat with the fuse 433, thereby effectively controlling the temperature of the fuse 433, ensuring stable operation of the fuse 433, and improving the reliability of the battery power distribution unit 400.

[0116] In some embodiments, when there are multiple electronic devices 43, each electronic device 43 can be attached to the liquid cooling plate 42. As an example, when the electronic device 43 includes a relay 431, a pre-charge resistor 432, and a fuse 433, the relay 431, the pre-charge resistor 432, and the fuse 433 are all attached to the liquid cooling plate 42.

[0117] In some embodiments, when there are multiple electronic devices 43, some of the electronic devices 43 may be attached to the liquid cooling plate 42. As an example, when the electronic device 43 includes a relay 431, a pre-charge resistor 432, and a fuse 433, one or two of the relay 431, the pre-charge resistor 432, and the fuse 433 may be attached to the liquid cooling plate 42.

[0118] In some embodiments, please refer to Figure 4 The heat-conducting component 45 is a one-piece molded structure, that is, the heat-conducting component 45 is a single structural component.

[0119] As an example, if the heat-conducting component 45 includes a first heat-conducting sub-component 451 and a second heat-conducting sub-component 452, the first heat-conducting sub-component 451 and the second heat-conducting sub-component 452 are integrally formed.

[0120] As an example, in the case where the heat-conducting component 45 includes a first heat-conducting sub-component 451 and a third heat-conducting sub-component 453, the first heat-conducting sub-component 451 and the third heat-conducting sub-component 453 are integrally formed.

[0121] As an example, in the case where the heat-conducting component 45 includes a second heat-conducting sub-component 452 and a third heat-conducting sub-component 453, the second heat-conducting sub-component 452 and the third heat-conducting sub-component 453 are integrally formed.

[0122] As an example, when the heat-conducting component 45 includes a first heat-conducting sub-component 451, a second heat-conducting sub-component 452, and a third heat-conducting sub-component 453, the first heat-conducting sub-component 451, the second heat-conducting sub-component 452, and the third heat-conducting sub-component 453 are integrally formed.

[0123] The above technical solution facilitates the processing and manufacturing of the heat-conducting component 45, as well as the assembly of the heat-conducting component 45, and the thermal bonding of each electronic component 43 with the liquid cooling plate 42.

[0124] In some embodiments, please refer to Figure 7 When the heat-conducting component 45 includes a first heat-conducting sub-component 451 and a second heat-conducting sub-component 452, the first heat-conducting sub-component 451 and the second heat-conducting sub-component 452 can be manufactured separately so that the first heat-conducting sub-component 451 fills the gap between the relay 431 and the liquid cooling plate 42, and the second heat-conducting sub-component 452 pre-charges the gap between the charging resistor 432 and the liquid cooling plate 42.

[0125] In some embodiments, please refer to Figure 7 When the heat-conducting component 45 includes a first heat-conducting sub-component 451 and a third heat-conducting sub-component 453, the first heat-conducting sub-component 451 and the third heat-conducting sub-component 453 can be manufactured separately so that the first heat-conducting sub-component 451 fills the gap between the relay 431 and the liquid cooling plate 42, and the third heat-conducting sub-component 453 fills the gap between the fuse 433 and the liquid cooling plate 42.

[0126] In some embodiments, please refer to Figure 7 When the heat-conducting component 45 includes a second heat-conducting sub-component 452 and a third heat-conducting sub-component 453, the second heat-conducting sub-component 452 and the third heat-conducting sub-component 453 can be manufactured separately so that the second heat-conducting sub-component 452 can properly pre-charge the gap between the resistor 432 and the liquid cooling plate 42, and the third heat-conducting sub-component 453 can properly pre-charge the gap between the fuse 433 and the liquid cooling plate 42.

[0127] In some embodiments, please refer to Figure 7 When the heat-conducting component 45 includes a first heat-conducting sub-component 451, a second heat-conducting sub-component 452, and a third heat-conducting sub-component 453, the first heat-conducting sub-component 451, the second heat-conducting sub-component 452, and the third heat-conducting sub-component 453 are all manufactured separately so that the first heat-conducting sub-component 451 can fill the gap between the relay 431 and the liquid cooling plate 42, the second heat-conducting sub-component 452 can fill the gap between the pre-charge resistor 432 and the liquid cooling plate 42, and the third heat-conducting sub-component 453 can fill the gap between the fuse 433 and the liquid cooling plate 42.

[0128] In some embodiments, please refer to Figures 3 to 7 The conductive busbar 44 is attached to the liquid cooling plate 42, and an insulating structure 46 is provided between the conductive busbar 44 and the liquid cooling plate 42.

[0129] The conductive busbar 44 being attached to the liquid cooling plate 42 means that the conductive busbar 44 is directly attached to the liquid cooling plate 42, or the conductive busbar 44 is attached to the liquid cooling plate 42 at intervals, such as the conductive busbar 44 being attached to the liquid cooling plate 42 through an adhesive layer.

[0130] The insulating structure 46 refers to a structural layer made of insulating material. An insulating structure 46 is provided between the conductive bus 44 and the liquid cooling plate 42 to ensure good insulation between them. The insulating material can be ceramic, plastic, etc.

[0131] By attaching the conductive busbar 44 to the liquid cooling plate 42, heat can be exchanged directly between the liquid cooling plate 42 and the conductive busbar 44, thereby reducing the impact of the heat from the conductive busbar 44 on the electronic device 43 and ensuring the proper operation of the electronic device 43. Furthermore, the insulation structure 46 is provided to reduce the risk of short circuits in the conductive busbar 44.

[0132] In some embodiments, please refer to Figures 3 to 7 The insulating structure 46 includes a heat-conducting component 461, with the conductive busbar 44 and the liquid cooling plate 42 respectively attached to both sides of the heat-conducting component 461.

[0133] Thermally conductive component 461 refers to a structural component made of thermally conductive material. Thermally conductive component 461 can be made of materials such as thermally conductive adhesive layer, thermally conductive rubber, and thermally conductive plastic.

[0134] The conductive busbar 44 and the liquid cooling plate 42 are respectively attached to two sides of the heat-conducting component 461. This means that one side of the heat-conducting component 461 is attached to the conductive busbar 44, and the other side of the heat-conducting component 461 is attached to the liquid cooling plate 42.

[0135] Through the above technical solution, the insulation structure 46 uses a heat-conducting component 461 to conduct the heat of the conductive busbar 44 to the liquid cooling plate 42, thereby improving the heat exchange efficiency between the conductive busbar 44 and the liquid cooling plate 42.

[0136] In some embodiments, the heat-conducting component 461 may be made of a flexible material, such as thermally conductive silicone or thermally conductive rubber, to fill the gap between the conductive busbar 44 and the liquid cooling plate 42. This improves the heat exchange efficiency between the conductive busbar 44 and the liquid cooling plate 42.

[0137] In some embodiments, the heat-conducting component 461 may also be made of rigid heat-conducting materials such as heat-conducting plastics or heat-conducting ceramics.

[0138] In some embodiments, please refer to Figure 4 When the battery power distribution unit 400 includes a heat-conducting element 45 and a heat-conducting component 461, the heat-conducting element 45 and the heat-conducting component 461 can be integrally formed to facilitate processing and manufacturing, and to reduce the number of parts and facilitate assembly.

[0139] In some embodiments, please refer to Figure 7 When the battery power distribution unit 400 includes a heat-conducting element 45 and a heat-conducting component 461, the heat-conducting element 45 and the heat-conducting component 461 can be manufactured separately.

[0140] In some embodiments, please refer to Figures 3 to 7 When the insulating structure 46 includes a heat-conducting member 461, the distance between the conductive bus 44 and the liquid cooling plate 42 is greater than the distance between the electronic device 43 and the liquid cooling plate 42.

[0141] The distance between the conductive busbar 44 and the liquid cooling plate 42 refers to the dimension of the gap between the conductive busbar 44 and the liquid cooling plate 42 along the direction from the liquid cooling plate 42 to the conductive busbar 44.

[0142] The distance between electronic device 43 and liquid cooling plate 42 refers to the dimension of the gap between electronic device 43 and liquid cooling plate 42 along the direction from liquid cooling plate 42 to electronic device 43.

[0143] The distance between the conductive busbar 44 and the liquid cooling plate 42 is greater than the distance between the electronic device 43 and the liquid cooling plate 42. In the event of vibration or bending of the liquid cooling plate 42, the electronic device 43 can hold the liquid cooling plate 42 in place, making it difficult for the liquid cooling plate 42 to contact the conductive busbar 44, thereby improving the insulation performance.

[0144] By using the above technical solution, the distance between the conductive busbar 44 and the liquid cooling plate 42 is set to be larger, thereby increasing the insulation distance between the conductive busbar 44 and the liquid cooling plate 42. In addition, the thickness of the heat-conducting component 461 can be set to be larger, thereby improving the insulation performance.

[0145] In some embodiments, the insulating structure 46 includes an insulating layer disposed on the liquid cooling plate 42 and / or the conductive bar 44.

[0146] An insulating layer refers to a structural layer made of insulating materials. Examples include plastic film layers adhered to an object, ceramic layers coated on an object, and curing layers.

[0147] The insulating structure 46 includes an insulating layer disposed on the liquid cooling plate 42 and / or the conductive bus 44, meaning that an insulating layer is disposed on the liquid cooling plate 42, or an insulating layer is disposed on the conductive bus 44, or both the liquid cooling plate 42 and the conductive bus 44 are provided with insulating layers.

[0148] Through the above technical solution, the insulation structure 46 uses an insulation layer, which is simple in structure and easy to set up.

[0149] In some embodiments, the distance between the conductive bus 44 and the liquid cooling plate 42 is greater than the distance between the electronic device 43 and the liquid cooling plate 42.

[0150] The distance between the conductive busbar 44 and the liquid cooling plate 42 refers to the dimension of the gap between the conductive busbar 44 and the liquid cooling plate 42 along the direction from the liquid cooling plate 42 to the conductive busbar 44. By spacing the conductive busbar 44 and the liquid cooling plate 42 apart, good insulation can be achieved between them.

[0151] The distance between electronic device 43 and liquid cooling plate 42 refers to the dimension of the gap between electronic device 43 and liquid cooling plate 42 along the direction from liquid cooling plate 42 to electronic device 43.

[0152] The distance between the conductive busbar 44 and the liquid cooling plate 42 is greater than the distance between the electronic device 43 and the liquid cooling plate 42. In the event of vibration or bending of the liquid cooling plate 42, the electronic device 43 can hold the liquid cooling plate 42 in place, making it difficult for the liquid cooling plate 42 to contact the conductive busbar 44, thereby improving the insulation performance.

[0153] By using the above technical solution, the distance between the conductive busbar 44 and the liquid cooling plate 42 is set to be larger, so as to increase the insulation distance between the conductive busbar 44 and the liquid cooling plate 42 and improve the insulation performance; in particular, it is more difficult for the liquid cooling plate 42 to contact the conductive busbar 44 under vibration or pressure, so as to further improve the insulation performance.

[0154] In some embodiments, please refer to Figures 3 to 7 The liquid cooling plate 42 is fixedly connected to the housing 41 by fasteners 47.

[0155] Fastener 47 refers to a structural component that connects two objects. Fastener 47 can be a screw, rivet, bolt, or other structural component.

[0156] The above technical solution uses fasteners 47 to fix the liquid cooling plate 42 to the housing 41, making the connection convenient and stable.

[0157] In some embodiments, the liquid cooling plate 42 may also be bonded or welded to the housing 41.

[0158] In some embodiments, the liquid cooling plate 42 may also be snapped into the housing 41.

[0159] In some embodiments, please refer to Figures 3 to 7 The liquid cooling plate 42 is provided with a port 423 for the supply wire to extend into the housing 41.

[0160] A conductor refers to a conductive component used to connect the battery power distribution unit 400 in the circuit. Conductors can be structural components such as copper busbars or copper wires.

[0161] A through-hole 423 refers to a hole or opening structure provided on the liquid cooling plate 42 and extending through the thickness direction of the liquid cooling plate 42. As an example, a notch can be provided at the edge of the liquid cooling plate 42, and the liquid cooling plate 42 can be mounted on the housing 41 to form a through-hole 423. As an example, a through hole can be provided on the liquid cooling plate 42 to form a through-hole 423.

[0162] Through the above technical solution, a through-hole 423 is provided on the liquid cooling plate 42 for wires to extend into, thereby facilitating the installation and use of the battery power distribution unit 400.

[0163] In some embodiments, a through-hole 423 may be provided on the housing 41 so that a wire can extend into the housing 41 and be connected to the circuit of the battery power distribution unit 400.

[0164] In some embodiments, the liquid cooling plate 42 is provided with connecting pipes 422 at both ends of the channel 421 to connect to the external heat exchange medium supply pipeline.

[0165] Please see Figures 3 to 7 According to some embodiments of this application, a battery power distribution unit 400 is provided, including a housing 41, electronic devices 43, a conductive bus 44, a heat-conducting component 45, and a liquid cooling plate 42. An opening 410 is provided on one side of the housing 41; the electronic devices 43 are installed in the housing 41; the conductive bus 44 connects to the electronic devices 43 and is placed within the housing 41; the liquid cooling plate 42 has a channel 421 for the flow of heat exchange medium; the liquid cooling plate 42 is installed on the housing 41 and covers the opening 410; the two sides of the heat-conducting component 45 are respectively attached to the electronic devices 43 and the liquid cooling plate 42.

[0166] The conductive busbar 44 is attached to the liquid cooling plate 42, and an insulating structure 46 is provided between the conductive busbar 44 and the liquid cooling plate 42. The insulating structure 46 includes a heat-conducting component 461. The two sides of the heat-conducting component 461 are respectively attached to the conductive busbar 44 and the liquid cooling plate 42. The distance between the conductive busbar 44 and the liquid cooling plate 42 is greater than the distance between the electronic device 43 and the liquid cooling plate 42.

[0167] By attaching the electronic device 43 and the conductive busbar 44 to the liquid cooling plate 42, heat exchange is directly performed between the electronic device 43 and the conductive busbar 44 through the liquid cooling plate 42, thereby improving heat exchange efficiency and providing a good temperature environment for the operation of the electronic device 43. This improves the reliability and stability of the operation of the electronic device 43, and consequently enhances the working efficiency and reliability of the battery power distribution unit 400. A larger distance is set between the conductive busbar 44 and the liquid cooling plate 42 to increase the insulation distance between them, improving insulation performance. In particular, under vibration or pressure, it is more difficult for the liquid cooling plate 42 to come into contact with the conductive busbar 44, further enhancing insulation performance.

[0168] According to some embodiments of this application, this application also provides a battery device 200, including a battery power distribution unit 400 as described in the above embodiments.

[0169] According to some embodiments of this application, this application also provides an electrical device, including a battery power distribution unit 400 as described in the above embodiments or a battery device 200 as described in the above embodiments.

[0170] 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 battery power distribution unit, characterized in that, include: A housing, wherein an opening is provided on one side; Electronic components are installed in the housing; A conductive busbar is used to connect the electronic device, and the conductive busbar is placed in the housing. Liquid cooling plate, with internal channels for the flow of heat exchange medium; The liquid cooling plate is mounted on the housing and covers the opening, and the electronic device is attached to the liquid cooling plate.

2. The battery power distribution unit as described in claim 1, characterized in that, The battery power distribution unit includes a heat-conducting component, and the electronic device and the liquid cooling plate are respectively attached to both sides of the heat-conducting component.

3. The battery power distribution unit as described in claim 2, characterized in that, The electronic device includes a relay, and the thermal conductive component includes a first thermal conductive sub-component, with the relay and the liquid cooling plate respectively attached to both sides of the first thermal conductive sub-component.

4. The battery power distribution unit as described in claim 2 or 3, characterized in that, The electronic device includes a pre-charge resistor, and the thermal conductive component includes a second thermal conductive component, with the pre-charge resistor and the liquid cooling plate respectively attached to both sides of the second thermal conductive component.

5. The battery power distribution unit as described in any one of claims 2-4, characterized in that, The electronic device includes a fuse, and the thermal conductive component includes a third thermal conductive component, with the fuse and the liquid cooling plate respectively attached to both sides of the third thermal conductive component.

6. The battery power distribution unit as described in any one of claims 1-5, characterized in that, The conductive busbar is attached to the liquid cooling plate, and an insulating structure is provided between the conductive busbar and the liquid cooling plate.

7. The battery power distribution unit as described in claim 6, characterized in that, The insulating structure includes a heat-conducting component, and the conductive busbar and the liquid cooling plate are respectively attached to both sides of the heat-conducting component.

8. The battery power distribution unit as described in claim 7, characterized in that, The distance between the conductive busbar and the liquid cooling plate is greater than the distance between the electronic device and the liquid cooling plate.

9. The battery power distribution unit as described in any one of claims 6-8, characterized in that, The insulating structure includes an insulating layer disposed on the liquid cooling plate and / or the conductive busbar.

10. The battery power distribution unit as described in any one of claims 1-5, characterized in that, The distance between the conductive busbar and the liquid cooling plate is greater than the distance between the electronic device and the liquid cooling plate.

11. A battery device, characterized in that, Includes the battery power distribution unit as described in any one of claims 1-10.

12. An electrical appliance, characterized in that, Includes the battery power distribution unit as described in any one of claims 1-10 or the battery device as described in claim 11.

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