Power distribution apparatus, battery apparatus and electrical apparatus

Abstract

The present application is applicable to the technical field of batteries, and provides a power distribution apparatus (30), a battery apparatus (100) and an electrical apparatus. The power distribution apparatus (30) comprises a first sampling assembly (31) and a second sampling assembly (32); the first sampling assembly (31) comprises a first sampling structure (311) and a first electrical connection structure (312) connected to the first sampling structure (311), the first sampling structure (311) being connected to a device to be measured; the second sampling assembly (32) is connected to the first sampling structure (311). In the power distribution apparatus (30) provided in the embodiments of the present application, by means of the first sampling structure (311), the first sampling assembly (31) of the power distribution apparatus (30) is connected to a device to be measured, and the second sampling assembly (32) is connected to the first sampling structure (311), such that both the first sampling assembly (31) and the second sampling assembly (32) can be connected to said device by means of the first sampling structure (311), thereby simplifying the connection structure between each sampling assembly in the power distribution apparatus (30) and said device, and reducing space occupation.

Description

Power distribution equipment, battery equipment and power consumption equipment Technical Field

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

[0002] 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.

[0003] The power distribution unit is a crucial component in a battery device, used to acquire the state information of various electrical structures within the device and control these structures based on this information. Currently, in power distribution units, sampling components that collect different state information are typically connected to the electrical structure under test via their respective sampling terminals. This results in a large space requirement, hindering miniaturization and making the installation process cumbersome, leading to low processing and assembly efficiency. Summary of the Invention

[0004] In view of the above problems, this application provides a power distribution device, a battery device, and a power consumption device, which can alleviate the problems of large space occupation and complicated installation process of the second sampling structure.

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

[0006] A first sampling component includes a first sampling structure and a first electrical connection structure connected to the first sampling structure. The first sampling structure is configured to electrically connect to a device under test (DUT) to acquire first state information of the DUT, and the first electrical connection structure is configured to transmit the first state information. A second sampling component is connected to the first sampling structure and is configured to acquire second state information of the DUT.

[0007] In this embodiment, the first sampling component of the power distribution device is connected to the device under test (DUT) through the first sampling structure, and the second sampling component is connected to the first sampling structure. This allows the device to be indirectly connected to the DUT through the first sampling structure, thereby collecting the second state information of the DUT. As a result, both the first and second sampling components can be connected to the DUT through the first sampling structure, simplifying the connection structure between each sampling component and the DUT in the power distribution device, reducing the space occupied by the connection parts between each sampling component and the DUT, and reducing the assembly difficulty, thus facilitating improved processing and assembly efficiency.

[0008] In some embodiments, there are two first sampling structures, and both first sampling structures are connected to a first electrical connection structure; the two first sampling structures are respectively configured to electrically connect the positive and negative terminals of the device under test.

[0009] The technical solution of this embodiment provides a specific structure of some first sampling components, so that the number of first sampling structures is two, and the two first sampling structures are respectively connected to the positive and negative terminals of the device under test, so that the first sampling components can better collect the first state information of the device under test.

[0010] In some embodiments, the number of second sampling components is one, and the second sampling component is connected to either of the two first sampling structures.

[0011] In the technical solution of this embodiment, when there are two first sampling structures, the second sampling component can be connected to any of the first sampling structures so as to collect second state information of different positions of the device under test as needed.

[0012] In some embodiments, the number of second sampling components is at least two, and the at least two second sampling components are respectively connected to two first sampling structures.

[0013] In the technical solution of this embodiment, the number of second sampling components is at least two, and at least two second sampling components can be connected to two first sampling structures respectively to collect second state information at different positions of the device under test, thereby enabling better monitoring of the state of the device under test.

[0014] In some embodiments, the number of first sampling structures is one, and the first sampling structure is configured to electrically connect the positive or negative terminal of the device under test.

[0015] In the technical solution of this embodiment, the number of first sampling structures is one, thereby reducing the space occupied by the first sampling structure and allowing the power distribution device to be arranged more flexibly inside the box.

[0016] In some embodiments, the second sampling component includes a second sampling structure and a second electrical connection structure, wherein the second sampling structure is connected to the first sampling structure and the second electrical connection structure is electrically connected to the second sampling structure.

[0017] The technical solution of this embodiment provides some specific structures of the second sampling structure, so that the second sampling structure can not only collect the second state information of the device under test through the first sampling structure, but also transmit the second state information to other required devices through the second electrical connection structure.

[0018] In some embodiments, the second sampling structure includes a temperature sampling structure, and there are two second electrical connection structures, which are respectively electrically connected to the positive and negative terminals of the second sampling structure.

[0019] The technical solution of this embodiment provides specific structures for some second sampling components, so that the second sampling components can collect temperature information and transmit the temperature information to other connected structures via the second electrical connection structure.

[0020] In some embodiments, the minimum spacing between the second electrical connection structure and the first electrical connection structure is greater than or equal to 9.5 mm.

[0021] The technical solution of this embodiment provides a range of minimum spacing between the second electrical connection structure and the first electrical connection structure to reduce mutual interference between the first electrical connection structure and the second electrical connection structure during signal transmission, thereby improving the accuracy of information transmission and reducing security risks.

[0022] In some embodiments, the minimum spacing between the second electrical connection structure and the first electrical connection structure is greater than or equal to 19.1 mm.

[0023] The technical solution of this embodiment further provides a range of minimum spacing between the second electrical connection structure and the first electrical connection structure, so as to further reduce the mutual interference between the first electrical connection structure and the second electrical connection structure during signal transmission, improve the accuracy of information transmission, and also reduce security risks.

[0024] In some embodiments, in a direction perpendicular to the transmission direction of the first state information, the cross-sectional area of ​​the first electrical connection structure is smaller than the cross-sectional area of ​​the first sampling structure.

[0025] The technical solution of this embodiment provides some dimensional relationships between the first sampling structure and the first electrical connection structure, so that the cross-sectional area of ​​the first sampling structure is larger than that of the first electrical connection structure, thereby increasing the contact area between the first sampling structure and the connected test structure, thereby improving the connection stability and information transmission stability of the first sampling structure.

[0026] In some embodiments, the first sampling structure is configured to acquire voltage information of the device under test; and / or, the second sampling component is configured to acquire temperature information of the device under test.

[0027] In the technical solution of this embodiment, the first sampling component can directly collect voltage information through the first sampling structure, and the second sampling component can indirectly collect temperature information of the device under test through the first sampling structure.

[0028] In some embodiments, the power distribution device further includes a housing, which includes a first housing and a second housing connected to the first housing; both the first sampling component and the second sampling component are connected to the first housing, at least a portion of the first sampling structure extends outside the housing, and at least a portion of the first electrical connection structure is housed within the housing.

[0029] In the technical solution of this embodiment, a box is provided, and the box includes a first box and a second box, so as to facilitate the installation of the first sampling component and the second sampling component, and also so that the first sampling component and the second sampling component can be located inside the box, so as to provide protection for the first sampling component and the second sampling component through the box.

[0030] In some embodiments, the first housing is a solid structural component that covers at least a portion of the first sampling component and the second sampling component.

[0031] In this embodiment, the first housing is a solid structural component, and it covers at least a portion of the first sampling component and the second sampling component. This allows the first housing to better secure the first and second sampling components and provide better protection for the covered portions. This design also reduces the risk of discharge breakdown in the first and second sampling components, thereby improving the safety performance of the power distribution device. Furthermore, this design enhances the overall integrity of the first housing, the first sampling component, and the second sampling component, further reducing assembly difficulty.

[0032] In some embodiments, a processing port is provided on the first housing, through which a portion of the first electrical connection structure and the second sampling component are exposed outside the first housing.

[0033] In the technical solution of this embodiment, a processing port is provided on the first box body to facilitate the processing of the first sampling component and the second sampling component after they are installed in the first box body.

[0034] In some embodiments, the power distribution device further includes a mounting component, in which both the first sampling component and the second sampling component are housed, and at least a portion of the first sampling structure extends beyond the mounting component; the mounting component is detachably connected to the first housing.

[0035] In the technical solution of this embodiment, an installation component is provided to support the first sampling component and the second sampling component; the installation component is detachably connected to the first housing to reduce the installation difficulty of the first sampling component and the second sampling component, reduce the complexity of the installation process, and facilitate the improvement of processing and assembly efficiency.

[0036] In some embodiments, the mounting component is a solid structural component that covers at least a portion of the first sampling component and the second sampling component.

[0037] In the technical solution of this embodiment, the mounting component is a solid structural component that covers at least a portion of the first sampling component and the second sampling component. In this case, the mounting component can better fix the first sampling component and the second sampling component, and can better protect the covered portion of the first sampling component and the second sampling component. At the same time, this setting can also reduce the risk of discharge breakdown of the first sampling component and the second sampling component, thereby improving the safety performance of the power distribution device.

[0038] In some embodiments, the power distribution device further includes a connection structure connected to the first housing; one end of the first electrical connection structure away from the first sampling structure is connected to the side of the connection structure facing into the housing, and one end of the second sampling component away from the first sampling structure is connected to the side of the connection structure facing into the housing.

[0039] In the technical solution of this embodiment, a connection structure is provided on the first box, and both the first sampling component and the second sampling component are connected to the connection structure. The connection structure can be connected to other structures so that the status information collected by the first sampling component and the second sampling component can be transmitted to other structures connected to the power distribution device through the connection structure.

[0040] In some embodiments, the first housing covers at least a portion of the connecting structure.

[0041] In the technical solution of this embodiment, the first box body covers at least a portion of the connecting structure, so that the first box body can better fix the connecting structure and provide protection for the covered portion of the connecting structure. At the same time, it can also simplify the installation steps of the connecting structure, reduce the installation difficulty, and improve the processing and assembly efficiency.

[0042] In some embodiments, the power distribution device further includes an intermediate structure, one side of which is connected to the first sampling structure, and the other side of which is configured to connect to the device under test.

[0043] In the technical solution of this embodiment, an intermediate structure is set up to connect the intermediate structure to the device under test, so that the first sampling structure can indirectly collect the status information of the device under test through the intermediate structure, thereby facilitating the arrangement of the positions of the first sampling component and the second sampling component.

[0044] Secondly, embodiments of this application also provide a battery device, including: a housing; a battery cell housed in the housing; and a power distribution device provided in some embodiments of the first aspect, the power distribution device being housed in the housing.

[0045] Thirdly, embodiments of this application also provide an electrical device, including the battery device provided in some embodiments of the second aspect.

[0046] 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

[0047] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiments below. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0048] Figure 1 is a schematic diagram of the vehicle structure provided in some embodiments of this application;

[0049] Figure 2 is an exploded structural diagram of a battery device provided in some embodiments of this application;

[0050] Figure 3 is a schematic diagram of the exploded structure of a battery cell provided in some embodiments of this application;

[0051] Figure 4 is a perspective view of a power distribution device provided in some embodiments of this application;

[0052] Figure 5 is a perspective view of the first box body provided in some embodiments of this application;

[0053] Figure 6 is a perspective view of the first sampling component and the second sampling component provided in some embodiments of this application;

[0054] Figure 7 is a magnified view of part C in Figure 6;

[0055] Figure 8 is a magnified view of part A in Figure 4;

[0056] Figure 9 is a magnified view of part B in Figure 5;

[0057] Figure 10 is a perspective view of the mounting components provided in some embodiments of this application.

[0058] The markings in the diagram represent the following: 1000, Vehicle; 100, Battery Unit; 10, Housing; 11, First Housing; 12, Second Housing; 20, Battery Cell; 21, Casing; 22, End Cap; 23, Electrode Assembly; 24, Electrode Terminal; 30, Power Distribution Device; 31, First Sampling Assembly; 311, First Sampling Structure; 312, First Electrical Connection Structure; 32, Second Sampling Assembly; 321, Second Sampling Structure; 322, Second Electrical Connection Structure; 33, Box; 331, First Box; 3311, Processing Port; 332, Second Box; 34, Mounting Component; 35, Connection Structure; 36, Intermediate Structure; 200, Motor; 300, Controller. Embodiments of the present invention

[0059] The embodiments of the technical solution of this application will now be described in detail with reference to the accompanying drawings. These embodiments are only used to more clearly illustrate the technical solution of this application and are therefore merely examples, and should not be used to limit the scope of protection of this application.

[0060] 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.

[0061] 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. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly defined.

[0062] 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.

[0063] 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.

[0064] 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).

[0065] 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," and "circumferential" 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 are not intended to 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.

[0066] In the description of the embodiments of this application, unless otherwise expressly specified and limited, 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.

[0067] Currently, judging from market trends, the application of battery devices is becoming increasingly widespread. Battery devices are not only used in energy storage power systems such as hydropower, thermal power, wind power, and solar power plants, but also widely applied 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 battery device applications, market demand is also constantly increasing.

[0068] In a battery device, the power distribution unit is one of the most important components. It acquires the status information of various electrical structures within the battery device and controls these structures based on this information. The power distribution unit may include a Battery Disconnect Unit (BDU), a Battery Management Unit (BMU), or other control structures.

[0069] In power distribution equipment, it is typically necessary to collect the status information of the electrical device under test (DUT) using sampling components and transmit this information to other devices so that they can respond accordingly. The status information collected by the sampling components can be temperature, voltage, relay status, or other information. Because power distribution equipment usually needs to collect a variety of different information, it is often equipped with multiple different sampling components. Each sampling component typically collects the DUT's status information through its own sampling terminal, resulting in multiple sampling terminals on the power distribution equipment. Multiple sampling terminals occupy a large amount of space and are not convenient to arrange on the power distribution equipment and the DUT, which is detrimental to the miniaturization of the power distribution equipment. At the same time, the installation process of multiple sampling terminals is also cumbersome, with low assembly efficiency, and is not conducive to automation.

[0070] Based on the above considerations, in order to alleviate the problems of large space occupation and complicated installation process of the second sampling structure, this application provides a power distribution device, which includes a first sampling component and a second sampling component, and the first sampling component includes a first sampling structure and a first electrical connection structure to collect the first state information of the device under test through the first sampling structure; at the same time, the second sampling component is connected to the first sampling structure to indirectly collect the second state information of the device under test through the first sampling structure.

[0071] In such a power distribution device, the first sampling component is connected to the device under test (DUT) through the first sampling structure, and the second sampling component is connected to the first sampling structure. This allows the second sampling component to be indirectly connected to the DUT through the first sampling structure, thereby acquiring the second state information of the DUT. As a result, both the first and second sampling components can be connected to the DUT through the first sampling structure, simplifying the connection structure between each sampling component and the DUT in the power distribution device and reducing the space occupied by the connection points between each sampling component and the DUT. At the same time, it reduces the assembly difficulty and facilitates improved processing and assembly efficiency.

[0072] For ease of explanation, the following embodiments will be described using a vehicle 1000 as an example of an electrical device according to an embodiment of this application.

[0073] Referring to Figure 1, which is a structural schematic diagram of a vehicle 1000 provided in some embodiments of this application, the vehicle 1000 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 is installed inside the vehicle 1000, and the battery can be located at the bottom, front, or rear of the vehicle 1000. The battery can be used to power the vehicle 1000; for example, the battery can serve as the operating power source for the vehicle 1000. The vehicle 1000 may also include a controller 300 and a motor 200. The controller 300 is used to control the battery to supply power to the motor 200, for example, to meet the power needs of the vehicle 1000 during startup, navigation, and driving.

[0074] In some embodiments of this application, the battery can not only serve as the operating power source for the vehicle 1000, but also as the driving power source for the vehicle 1000, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1000.

[0075] Referring to Figure 2, which is an exploded structural diagram of a battery device 100 provided in some embodiments of this application.

[0076] The battery device 100 mentioned in the embodiments of this application may include one or more battery cell assemblies 20 for providing voltage and capacity. A battery cell assembly 20 may include multiple battery cells 20, which are connected in series, parallel, or mixed connections via busbars.

[0077] In some embodiments, the battery cell assembly is typically formed by arranging multiple battery cells 20.

[0078] As an example, the battery cell 20 assembly can be a battery module, which is formed by arranging and fixing multiple battery cells 20 together to form an independent module. As an example, a battery module can be formed by bundling multiple battery cells 20 together with cable ties.

[0079] In some embodiments, the battery device 100 may be a battery pack, which includes a housing 10 and one or more battery cell 20 assemblies housed in the housing 10.

[0080] As an example, the battery cell 20 assembly can be a battery module, and the battery cell 20 assembly can be housed in the housing 10 by fixing the battery module in the housing 10.

[0081] As an example, the battery cell 20 assembly can also be housed in the housing 10 by directly fixing multiple battery cells 20 to the housing 10.

[0082] As an example, the housing 10 may include a first housing 11 and a second housing 12. The first housing 11 and the second housing 12 are fastened together to form a closed space inside the housing 10 to house the battery cell 20 assembly. Here, "closed" refers to covering or closing, and can be either sealed or unsealed. The first housing 11 may be a top cover or a bottom plate.

[0083] As an example, the housing 10 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 10 forms an enclosed space to house the battery cell 20 assembly.

[0084] In some embodiments, the housing 10 may be part of the chassis structure of the vehicle 1000. For example, a portion of the housing 10 may be at least a portion of the floor of the vehicle 1000, or a portion of the housing 10 may be at least a portion of the crossbeams and longitudinal beams of the vehicle 1000.

[0085] Referring to Figure 3, which is an exploded structural diagram of a battery cell 20 provided in some embodiments of this application, a battery cell 20 refers to the smallest unit that makes up a battery. A battery cell 20 can be a rechargeable battery, meaning a battery cell 20 that can be recharged after discharge to activate the active materials and continue to be used.

[0086] The battery cell 20 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.

[0087] As shown in the figure, the battery cell 20 includes an end cap 22, a housing 21, an electrode assembly 23, and other functional components.

[0088] End cap 22 refers to a component that covers the opening of housing 21 to isolate the internal environment of battery cell 20 from the external environment. The shape of end cap 22 can be adapted to the shape of housing 21 to fit it. Optionally, end cap 22 can be made of a material with certain hardness and strength (such as aluminum alloy), so that end cap 22 is not easily deformed under pressure and impact, allowing battery cell 20 to have higher structural strength and improved safety performance. Functional components such as electrode terminals 24 can be provided on end cap 22. Electrode terminals 24 can be used for electrical connection with electrode assembly 23 for outputting or inputting electrical energy to battery cell 20. In some embodiments, end cap 22 can also be provided with a pressure relief mechanism for releasing internal pressure when the internal pressure or temperature of battery cell 20 reaches a threshold. The material of end cap 22 can also be various, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc., and this application embodiment does not impose special limitations on this. In some embodiments, an insulating element may be provided on the inner side of the end cap 22. The insulating element can be used to isolate the electrical connection components within the housing 21 from the end cap 22 to reduce the risk of short circuits. For example, the insulating element may be made of plastic, rubber, etc.

[0089] The housing 21 is a component used to cooperate with the end cap 22 to form the internal environment of the battery cell 20. This internal environment can accommodate the electrode assembly 23, electrolyte, and other components. The housing 21 and the end cap 22 can be independent components. An opening can be provided on the housing 21, and the end cap 22 closes the opening to form the internal environment of the battery cell 20. Alternatively, the end cap 22 and the housing 21 can be integrated. Specifically, the end cap 22 and the housing 21 can form a common connecting surface before other components are inserted into the housing. When it is necessary to encapsulate the interior of the housing 21, the end cap 22 closes the housing 21. The housing 21 can have various shapes and sizes, such as cuboid, cylindrical, hexagonal prism, etc. Specifically, the shape of the housing 21 can be determined according to the specific shape and size of the electrode assembly 23. The material of the housing 21 can be various, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc. This application embodiment does not impose any special limitations on this.

[0090] Electrode assembly 23 is the component in the battery cell 20 where the electrochemical reaction occurs. The casing 21 may contain one or more electrode assemblies 23. The electrode assembly 23 is mainly formed by winding or stacking positive and negative electrode sheets, and typically a separator is provided between the positive and negative electrode sheets. The portions of the positive and negative electrode sheets containing active material constitute the main body of the electrode assembly 23, while the portions of the positive and negative electrode sheets without active material each constitute a tab. The positive and negative tabs may be located together at one end of the main body or separately at both ends of the main body. During the charging and discharging process of the battery, the positive and negative active materials react with the electrolyte, and the tabs connect to the electrode terminals 24 to form a current loop.

[0091] In a first aspect, referring to Figures 4 to 6, embodiments of this application provide a power distribution device 30, including a first sampling component 31 and a second sampling component 32. The first sampling component 31 includes a first sampling structure 311 and a first electrical connection structure 312 connected to the first sampling structure 311. The first sampling structure 311 is configured to electrically connect to a device under test (DUT) in a battery device 100 to collect first state information of the DUT. The first electrical connection structure 312 is configured to transmit the first state information. The second sampling component 32 is connected to the first sampling structure 311 and is configured to collect second state information of the DUT.

[0092] The power distribution device 30 refers to the structure in the battery device 100 used to control the state of other electrical structures. The power distribution device 30 can collect or receive the state information of the corresponding electrical structures and can control the working state of the corresponding electrical structures according to the state information. The power distribution device 30 may include the battery disconnect unit (BDU) of the battery device 100, and may also include the battery management unit (BMU), the cell supervision circuit (CSC), etc.

[0093] The first sampling component 31 and the second sampling component 32 both refer to the structures in the power distribution device 30 used to collect the status information of the corresponding devices under test. The first sampling component 31 and the second sampling component 32 can be used to collect the status information of the battery cell 20, or they can be used to collect the status information of other structures, such as relays. The status information collected by the first sampling component 31 and the second sampling component 32 can be temperature, voltage or other information.

[0094] The first sampling component 31 and the second sampling component 32 are used to collect different state information of the same device under test, that is, the first state information collected by the first sampling component 31 and the second state information collected by the second sampling component 32 are different. For example, the first state information can be voltage, temperature, insulation state, on / off state, etc., and the second state information can be voltage, temperature, insulation state, on / off state, etc., and the first state information and the second state information are different.

[0095] The first sampling structure 311 refers to the structure in the first sampling component 31 used to collect the state information of the device under test. According to the first state information collected by the first sampling component 31, the first sampling structure 311 may include a voltage acquisition terminal, a temperature sensor, or other structures. A first sampling component 31 may include only one first sampling structure 311, or it may include two or more first sampling structures 311. According to the first state information collected by the first sampling component 31, when the first sampling component 31 includes multiple first sampling structures 311, the multiple first sampling structures 311 can collect the state information of different devices under test respectively, or they can collect the state information of the same device under test.

[0096] The first electrical connection structure 312 refers to the structure in the first sampling component 31 used for outputting and inputting electrical energy and electrical signals. The first electrical connection structure 312 can be a wire harness, a metal plate, or other conductive structure. One end of the first electrical connection structure 312 is electrically connected to the second sampling structure 321, and the other end of the first electrical connection structure 312 is used to connect to other external devices. At this time, the status information collected by the first sampling structure 311 can be transmitted to the device connected to the first electrical connection structure 312 through the first electrical connection structure 312. According to the structure of the first sampling structure 311, the device connected to the first electrical connection structure 312 can also provide electrical energy and electrical signals to the first sampling structure 311 through the first electrical connection structure 312.

[0097] Understandably, the power distribution device 30 may also include a base. In this case, the first sampling structure 311 and the first electrical connection structure 312 are both located on the base and connected to the housing 10 or other structures through the base. The base may be a plate-shaped structural component, a flexible circuit board, or other structures.

[0098] The second sampling component 32 is connected to the first sampling structure 311 to indirectly acquire the second state information of the device under test through the first sampling structure 311. Depending on the structure of the second sampling component 32 and the specific state information it acquires, the second sampling component 32 can be electrically connected to the first sampling structure 311, or it can be connected to the first sampling structure 311 without being connected to it.

[0099] For example, since the first sampling component 31 is connected to the device under test (DUT), and the second sampling component 32 is indirectly connected to the DUT through the first sampling structure 311, the first sampling component 31 can be used to collect electrical state information such as voltage, current, on / off state, and insulation state of the DUT. At this time, the second sampling component 32 can be used to collect electrical state information such as voltage, current, on / off state, and insulation state of the DUT, as well as physical state information such as temperature of the DUT.

[0100] Since the second sampling component 32 is indirectly connected to the device under test through the first sampling structure 311, the first sampling component 31 and the second sampling component 32 can be connected to the device under test only through the first sampling structure 311. This reduces the number of connection structures 35 between the first sampling component 31 and the second sampling component 32 and the device under test, simplifies the installation process of the first sampling component 31 and the second sampling component 32, and also reduces the space occupied by the connection structures 35 between the first sampling component 31 and the second sampling component 32 and the device under test.

[0101] Since the second sampling component 32 is indirectly connected to the device under test through the first sampling structure 311, during the assembly of the power distribution device 30, the second sampling component 32 can be connected to the first sampling structure 311 firstly, and then the power distribution device 30 can be installed in the required position as needed, and the first sampling structure 311 can be connected to the device under test.

[0102] In this embodiment, the first sampling component 31 of the power distribution device 30 is connected to the device under test (DUT) through the first sampling structure 311, and the second sampling component 32 is connected to the first sampling structure 311, so as to indirectly connect to the DUT through the first sampling structure 311 and collect the second state information of the DUT. Thus, both the first sampling component 31 and the second sampling component 32 can be connected to the DUT through the first sampling structure 311, which simplifies the connection structure 35 between each sampling component and the DUT in the power distribution device 30, reduces the space occupied by the connection parts between each sampling component and the DUT, and reduces the assembly difficulty, which facilitates the improvement of processing and assembly efficiency.

[0103] Referring to Figure 6, in some embodiments, there are two first sampling structures 311, and both first sampling structures 311 are connected to the first electrical connection structure 312; the two first sampling structures 311 are respectively configured to electrically connect the positive and negative terminals of the device under test.

[0104] There are two first sampling structures 311, and both first sampling structures 311 are connected to the first electrical connection structure 312. That is, both first sampling structures 311 can transmit signals through the same first electrical connection structure 312. The two first sampling structures 311 are used to electrically connect the positive and negative terminals of the device under test, respectively. At this time, the first sampling component 31 can be used to collect the voltage, current or on / off state of the device under test.

[0105] The first sampling structure 311 may include conductive structural components. The first sampling structure 311 may be fixedly connected to the positive or negative terminal of the device under test by welding, bonding or other means. The first sampling structure 311 may also be detachably connected to the positive or negative terminal of the device under test by screwing, snap-fitting or other means.

[0106] For example, the first sampling component 31 can be used to collect voltage. In this case, the two first sampling structures 311 are electrically connected to an external voltage detection device through the first point electrical connection structure 35. For example, the first sampling component 31 can also be used to collect the on / off state of the device under test. In this case, the two first sampling structures 311 are electrically connected to an external voltage detection device or current detection device through the first point electrical connection structure 35. When the device under test is off, no current flows through the device under test, and the current and voltage of the device under test should both be zero or close to zero. When the device under test is on, the current and voltage of the device under test should be the values ​​of its normal operating state, and should be distinguished from the values ​​of the off state. If possible, the first sampling component 31 can also collect other state information of the device under test, not limited to the above two.

[0107] This embodiment provides a specific structure of the first sampling component 31, so that there are two first sampling structures 311, and the two first sampling structures 311 are respectively connected to the positive and negative terminals of the device under test, so that the first sampling component 31 can better collect the first state information of the device under test.

[0108] Referring to Figure 6, in some embodiments where there are two first sampling structures 311, the number of second sampling components 32 is one, and the second sampling component 32 is connected to either of the two first sampling structures 311.

[0109] The number of second sampling components 32 is one, and it can be connected to either of the two first sampling structures 311. At this time, the second sampling component 32 can collect the temperature, current and other status information of the device under test through the first sampling structure 311. According to the status information collected by the second sampling component 32, the second sampling component 32 can be electrically connected to the first sampling structure 311, or it can be connected to the first sampling structure 311 without being connected to it.

[0110] Understandably, if the second sampling component 32 is one and only connected to either of the two first sampling components 31, the power distribution device 30 may also include a third sampling component. In this case, the third sampling component may be connected to the other of the two first sampling components 31 to distinguish it from the second sampling component 32 and to collect other status information of the device under test.

[0111] In this embodiment, when there are two first sampling structures 311, the second sampling component 32 can be connected to any of the first sampling structures 311 so as to collect second state information of different positions of the device under test as needed.

[0112] In some embodiments where there are two first sampling structures 311, the number of second sampling components 32 is at least two, and the at least two second sampling components 32 are respectively connected to the two first sampling structures 311.

[0113] The number of second sampling components 32 is at least two, that is, the number of second sampling components 32 can be two, or three or more; at least two second sampling components 32 are respectively connected to two first sampling structures 311, that is, each of the two first sampling structures 311 is connected to at least one second sampling component 32.

[0114] When at least one second sampling component 32 is connected to each of the two first sampling structures 311, the second sampling component 32 corresponding to different first sampling structures 311 can be connected to the same external device. In this case, the second sampling component 32 can be used to detect the voltage, on / off state, and other states of the device under test.

[0115] When at least one second sampling component 32 is connected to each of the two first sampling structures 311, the second sampling components 32 corresponding to different first sampling structures 311 can also be connected to different external devices. In this case, the second sampling component 32 can be used to detect the temperature, current, etc. of the device under test in order to obtain the corresponding status information of different parts of the device under test.

[0116] In this embodiment, the number of second sampling components 32 is at least two, and at least two second sampling components 32 can be connected to two first sampling structures 311 respectively to collect second state information at different positions of the device under test, thereby enabling better monitoring of the state of the device under test.

[0117] In some embodiments, the number of first sampling structures 311 is one, and the first sampling structure 311 is configured to electrically connect the positive or negative terminal of the device under test.

[0118] The number of first sampling structures 311 is one. The first sampling component 31 is electrically connected to the positive and negative terminals of the device under test. At this time, the first sampling component 31 can be used to collect the current, temperature and other states of the device under test.

[0119] When there is only one first sampling structure 311, a battery device 100 can include two power distribution devices 30. In this case, the first sampling structures 311 of the two power distribution devices 30 can be electrically connected to the positive and negative terminals of the device under test, respectively. The first sampling structures 311 of the two power distribution devices 30 can cooperate with each other to collect the voltage, on / off state, and other states of the device under test. In this way, the two power distribution devices 30 can be set according to the positions of the positive and negative terminals of the device under test. Compared with the case where the first sampling component 31 in a power distribution device 30 includes two first sampling structures 311, this setting can make the volume of each power distribution device 30 smaller, so as to better utilize the space inside the housing 10 and facilitate the layout.

[0120] In this embodiment, the number of first sampling structures 311 is one, thereby reducing the space occupied by the first sampling structures 311 and allowing the power distribution device 30 to be arranged more flexibly inside the housing 10.

[0121] Referring to FIG6, in some embodiments, the second sampling component 32 includes a second sampling structure 321 and a second electrical connection structure 322, wherein the second sampling structure 321 is connected to the first sampling structure 311 and the second electrical connection structure 322 is electrically connected to the second sampling structure 321.

[0122] The second sampling structure 321 refers to the structure in the second sampling component 32 used to collect the state information of the device under test. According to the second state information collected by the second sampling component 32, the second sampling structure 321 may include a temperature sensor, a voltage acquisition terminal, or other structures. A second sampling component 32 may include only one second sampling structure 321, or it may include two or more second sampling structures 321. According to the second state information collected by the second sampling component 32, when the second sampling component 32 includes multiple second sampling structures 321, the multiple second sampling structures 321 may be connected to different first sampling structures 311 respectively.

[0123] The second electrical connection structure 322 refers to the structure in the second sampling component 32 used for outputting and inputting electrical energy and electrical signals. The second electrical connection structure 322 can be a wire harness, a metal plate, or other conductive structure. One end of the second electrical connection structure 322 is electrically connected to the second sampling structure 321, and the other end of the second electrical connection structure 322 is used to connect to other external devices. At this time, the status information collected by the second sampling structure 321 can be transmitted to the device connected to the second electrical connection structure 322 through the second electrical connection structure 322. According to the structure of the second sampling structure 321, the device connected to the second electrical connection structure 322 can also provide electrical energy and electrical signals to the second sampling structure 321 through the second electrical connection structure 322.

[0124] The second sampling structure 321 is connected to the first sampling structure 311 to indirectly acquire the second state information of the device under test through the first sampling structure 311. According to the structure of the second sampling structure 321, the second sampling structure 321 can be electrically connected to the first sampling structure 311, or it can be connected to the first sampling structure 311 without being connected to it.

[0125] This embodiment provides some specific structures of the second sampling structure 321 so that the second sampling structure 321 can not only collect the second state information of the device under test through the first sampling structure 311, but also transmit the second state information to other required devices through the second electrical connection structure 322.

[0126] In some embodiments, the second sampling structure 321 includes a temperature sampling structure, and there are two second electrical connection structures 322, which are respectively electrically connected to the positive and negative terminals of the second sampling structure 321.

[0127] The second sampling structure 321 includes a temperature sampling structure, that is, the second state information of the device under test collected by the second sampling structure 321 is temperature information. The temperature sampling structure may include a thermistor, an infrared temperature sensor or other structures; for example, the second sampling structure 321 is a negative temperature coefficient thermistor (NTC).

[0128] There are two second electrical connection structures 322, which are respectively connected to different sides of the second sampling structure 321. That is, the two second electrical connection structures 322 are respectively connected to the positive and negative terminals of the temperature sampling structure. At this time, one second electrical connection structure 322 is used to transmit electrical energy and electrical signals to the second sampling structure 321, and the other second electrical connection structure 322 is used to transmit the status information collected by the second sampling structure 321 to other connected external structures. That is, the two second electrical connection structures 322 serve as the input structure and the output structure, respectively.

[0129] For example, when the second sampling structure 321 is a negative temperature coefficient thermistor (NTC), the temperature change of the device under test connected to the first sampling structure 311 can be conducted to the first sampling structure 311, causing the first sampling structure 311 to change temperature synchronously. The temperature change of the first sampling structure 311 will cause the resistance of the second sampling structure 321 to change. At this time, the second state information collected by the second sampling structure 321 is the voltage or current change information. The second state information can be transmitted to other connected external devices through the second electrical connection structure 322.

[0130] This embodiment provides some specific structures of the second sampling component 32 so that the second sampling component 32 can collect temperature information and transmit the temperature information to other connected structures via the second electrical connection structure 322.

[0131] Referring to Figures 6 and 7, in some embodiments, the minimum distance between the second electrical connection structure 322 and the first electrical connection structure 312 is greater than or equal to 9.5 mm.

[0132] The minimum spacing between the first electrical connection structure 312 and the second electrical connection structure 322 refers to the spacing between the closest parts of the first electrical connection structure 312 and the second electrical connection structure 322, which is the spacing shown as L in Figure 7; this spacing is greater than or equal to 9.5 mm. For example, this spacing can be 9.5 mm, or it can be 15.5, 20.5, 25.5, 30 mm or other values.

[0133] For example, the first electrical connection structure 312 and the second electrical connection structure 322 can extend along the same reference straight line so that the length directions of the first electrical connection structure 312 and the second electrical connection are parallel or approximately parallel. In this case, the minimum distance between the first electrical connection structure 312 and the second electrical connection structure 322 can be 9.5 mm, so that it is difficult for the first electrical connection structure 312 and the second electrical connection structure 322 to experience discharge breakdown. At the same time, this arrangement can also reduce space occupation while reducing discharge breakdown.

[0134] For example, when the voltage on the first electrical connection structure 312 and / or the second electrical connection structure 322 is less than or equal to 500V, the minimum spacing between the first electrical connection structure 312 and the second electrical connection structure 322 can be 9.5mm, which can reduce the occurrence of discharge breakdown between the first electrical connection structure 312 and the second electrical connection structure 322, and also reduce the space occupation.

[0135] For example, the minimum spacing between the first electrical connection structure 312 and the second electrical connection structure 322 can be 30mm. In this case, it is more difficult for discharge breakdown to occur between the first electrical connection structure 312 and the second electrical connection structure 322.

[0136] Since the first electrical connection is used to transmit the first state information collected by the first sampling structure 311 and the second electrical connection is used to transmit the second state information collected by the second sampling structure 321, and the first and second state information are usually transmitted in the form of electrical signals, there is a risk of discharge breakdown during the transmission of electrical signals between the first electrical connection structure 312 and the second electrical connection structure 322.

[0137] Accordingly, this embodiment provides a range of minimum spacing between the second electrical connection structure 322 and the first electrical connection structure 312 to reduce mutual interference between the first electrical connection structure 312 and the second electrical connection structure 322 during signal transmission, thereby improving the accuracy of information transmission and reducing security risks.

[0138] Referring to Figures 6 and 7, in some embodiments, the minimum distance between the second electrical connection structure 322 and the first electrical connection structure 312 is greater than or equal to 19.1 mm.

[0139] The minimum spacing between the first electrical connection structure 312 and the second electrical connection structure 322 refers to the spacing between the closest parts of the first electrical connection structure 312 and the second electrical connection structure 322, which is the spacing shown as L in Figure 7; this spacing is greater than or equal to 19.1 mm. For example, this spacing can be 19.1 mm, or it can be 19.1, 25.5, 30 mm or other values.

[0140] For example, the first electrical connection structure 312 and the second electrical connection structure 322 can extend along the same reference straight line so that the length directions of the first electrical connection structure 312 and the second electrical connection are parallel or approximately parallel. In this case, the minimum distance between the first electrical connection structure 312 and the second electrical connection structure 322 can be 19.1 mm, so that it is difficult for the first electrical connection structure 312 and the second electrical connection structure 322 to experience discharge breakdown.

[0141] For example, when the voltage on the first electrical connection structure 312 and / or the second electrical connection structure 322 is greater than or equal to 500V, the minimum spacing between the first electrical connection structure 312 and the second electrical connection structure 322 can be 19.1mm, which can reduce the occurrence of discharge breakdown between the first electrical connection structure 312 and the second electrical connection structure 322, and also reduce the space occupation.

[0142] For example, the minimum spacing between the first electrical connection structure 312 and the second electrical connection structure 322 can be 30mm. In this case, it is more difficult for discharge breakdown to occur between the first electrical connection structure 312 and the second electrical connection structure 322.

[0143] This embodiment further provides a range of minimum spacing between the second electrical connection structure 322 and the first electrical connection structure 312, so as to further reduce the mutual interference between the first electrical connection structure 312 and the second electrical connection structure 322 during signal transmission, improve the accuracy of information transmission, and also reduce security risks.

[0144] Referring to FIG6, in some embodiments, in the direction perpendicular to the transmission direction of the first state information, the cross-sectional area of ​​the first electrical connection structure 312 is smaller than the cross-sectional area of ​​the first sampling structure 311.

[0145] The transmission direction of the first state information refers to the direction and path of the first state information from the device under test through the first sampling structure 311 to the first electrical connection structure 312.

[0146] The cross-sectional area of ​​the first electrical connection structure 312 in the information transmission direction reflects its volume, and the cross-sectional area of ​​the first sampling structure 311 in the information transmission direction reflects its volume. Since the first electrical connection structure 312 is only used to transmit electrical energy and electrical signals, while the first sampling structure 311 is used not only to transmit electrical energy and electrical signals but also to connect with the device under test, the cross-sectional area of ​​the first sampling structure 311 is made larger than that of the first electrical connection structure 312. This ensures that the first sampling structure 311 has a larger volume, allowing for a larger contact area with other connected structures. This facilitates better transmission of electrical energy and electrical signals by the first sampling structure 311 and also facilitates a more stable connection between the first sampling structure 311 and other connected structures.

[0147] This embodiment provides some dimensional relationships between the first sampling structure 311 and the first electrical connection structure 312, such that the cross-sectional area of ​​the first sampling structure 311 is larger than the cross-sectional area of ​​the first electrical connection structure 312, so as to increase the contact area between the first sampling structure 311 and the connected structure under test, thereby improving the connection stability and information transmission stability of the first sampling structure 311.

[0148] In some embodiments, the first sampling structure 311 is configured to acquire voltage information of the device under test in the battery device 100; and / or, the second sampling component 32 is configured to acquire temperature information of the device under test.

[0149] The first sampling structure 311 is used to collect the voltage information of the device under test, that is, the first state information is the voltage information of the device under test. At this time, the first sampling structure 311 can be a conductive structure. Part of the current flowing through the device under test can be transmitted to other connected external devices through the first sampling structure 311 and the first electrical connection structure 312, so as to detect and obtain the voltage information of the device under test.

[0150] When the first sampling structure 311 is used to collect voltage information of the device under test, the first sampling component 31 may include two first sampling structures 311, and the two first sampling structures 311 are electrically connected to the positive and negative terminals of the device under test, respectively. When the first sampling structure 311 is used to collect voltage information of the device under test, the first sampling component 31 may also include only one first sampling structure 311. In this case, the battery device 100 includes two power distribution devices 30. The two first sampling structures 311 of the two power distribution devices 30 can be electrically connected to the positive and negative terminals of the device under test, respectively, and the two first sampling structures 311 of the two power distribution devices 30 are respectively connected to the same external device through the corresponding first electrical connection structure 312.

[0151] The second sampling component 32 is used to collect the temperature information of the device under test, that is, the second state information is the temperature information of the device under test; the temperature change of the device under test connected to the first sampling structure 311 can be transmitted to the first sampling structure 311, and cause the first sampling structure 311 to change temperature synchronously, and the temperature change of the first sampling structure 311 will be transmitted to the second sampling component 32.

[0152] When the second sampling component 32 includes a second sampling structure 321 and a second electrical connection structure 322, the second sampling structure 321 is a temperature sampling structure. For example, when the second sampling structure 321 is a negative temperature coefficient thermistor (NTC), the temperature change of the device under test connected to the first sampling structure 311 can be conducted to the first sampling structure 311, causing the first sampling structure 311 to change temperature synchronously. The temperature change of the first sampling structure 311 will cause the resistance of the second sampling structure 321 to change. At this time, the second state information collected by the second sampling structure 321 is the voltage or current change information, and the second state information can be transmitted to other connected external devices via the second electrical connection structure 322.

[0153] In this embodiment, the first sampling component 31 is able to directly acquire voltage information through the first sampling structure 311, and the second sampling component 32 is able to indirectly acquire temperature information of the device under test through the first sampling structure 311.

[0154] Referring to Figures 4 and 5, in some embodiments, the power distribution device 30 further includes a housing 33, which includes a first housing 331 and a second housing 332 connected to the first housing 331; the first sampling component 31 and the second sampling component 32 are both connected to the first housing 331; at least a portion of the first sampling structure 311 extends outside the housing 33; and at least a portion of the first electrical connection structure 312 is housed within the housing 33.

[0155] The housing 33 refers to the structure in the power distribution device 30 used to provide a fixed foundation for the first sampling component 31, the second sampling component 32, the plug interface, or other structures. The housing 33 can be a closed structure or an open structure with openings on one or more sides. The housing 33 is housed within the enclosure 10. The housing 33 can be directly connected to the enclosure 10 or connected to other structures within the enclosure 10. The shape of the housing 33 can be cuboid, cylindrical, or other shapes. The material of the housing 33 can include metal, plastic, or other materials.

[0156] The first box 331 and the second box 332 are both part of the structure of the box 33. The first box 331 can be fastened to the second box 332 and together define a cavity for accommodating the first sampling component 31, the second sampling component 32 and other structures.

[0157] In addition to the first box 331 and the second box 332, the box 33 may also include other structures; for example, the box 33 may include a frame structure with openings at both ends. In this case, the first box 331 and the second box 332 are respectively located on the two open sides of the frame interface, and the first box 331 and the second box 332 are indirectly connected and interlocked with each other through the frame structure.

[0158] The first box 331 can be a hollow structure with one end open, or it can be a plate-like structure or other shapes. The shape of the first box 331 can be circular, square, or other shapes, and the shape of the first box 331 can also be set according to the shape of the box 33. The first box 331 can be fastened to the second box 332 by screwing, snapping, or other means. The material of the first box 331 can include metal, plastic, or other materials.

[0159] Similar to the first box 331, the second box 332 can be a hollow structure with one end open, or it can be a plate-like structure or other shapes. The shape of the second box 332 can be circular, square, or other shapes, and the shape of the second box 332 can also be set according to the shape of the box 33. The second box 332 can be fastened to the second box 332 by screwing, snapping, or other means. The material of the second box 332 can include metal, plastic, or other materials.

[0160] The first box 331 can be the top structure of the box 33, and correspondingly, the second box 332 can be the bottom structure of the box 33; the first box 331 can also be the bottom structure of the box 33, and correspondingly, the second box 332 can be the top structure of the box 33.

[0161] The first sampling component 31 and the second sampling component 32 are both connected to the first housing 331. The first sampling component 31 and the second sampling component 32 can be connected to the first housing 331 by bonding, screwing, snapping or other means. At this time, the first housing 331 can provide a carrier for the first sampling component 31 and the second sampling component 32.

[0162] At least a portion of the first sampling structure 311 extends outside the housing 33 to facilitate connection between the first sampling structure 311 and the device under test (DUT) and to facilitate the first sampling structure 311 in acquiring the first state information of the DUT. The first sampling structure 311 may extend only partially outside the housing 33, in which case the other part of the first sampling structure 311 can be accommodated inside the housing 33, or the first sampling structure 311 may extend completely outside the housing 33.

[0163] At least a portion of the first electrical connection structure 312 is housed within the housing 33. The first electrical connection structure 312 may be completely housed within the housing 33 so that the housing 33 can provide protection for the first electrical connection structure 312. A portion of the first electrical connection structure 312 may also extend outside the housing 33 so that the first electrical connection structure 312 can be connected to other external devices.

[0164] At least a portion of the second sampling structure 321 is housed within the housing 33. The second sampling structure 321 may be completely housed within the housing 33 so that the housing 33 can provide protection for the second sampling structure 321. A portion of the second sampling structure 321 may also extend outside the housing 33 so that the second sampling structure 321 can be connected to other external devices.

[0165] For example, a portion of the first sampling structure 311 extends outside the housing 33, and another portion of the first sampling structure 311 is housed within the housing 33. At this time, the end of the second sampling component 32 connected to the first sampling structure 311 is completely housed within the housing 33, so as to provide protection for the connection between the second sampling component 32 and the first sampling structure 311 through the housing 33, thereby reducing the potential damage to the connection between the second sampling component 32 and the first sampling structure 311 caused by external factors.

[0166] In this embodiment, a housing 33 is provided, and the housing 33 includes a first housing 331 and a second housing 332, so as to facilitate the installation of the first sampling component 31 and the second sampling component 32, and also so that the first sampling component 31 and the second sampling component 32 can be located inside the housing 33, so as to provide protection for the first sampling component 31 and the second sampling component 32 through the housing 33.

[0167] In some embodiments, the first housing 331 is a solid structural component, and the first housing 331 covers at least a portion of the first sampling component 31 and the second sampling component 32.

[0168] The first housing 331 is a solid structure, which allows the first housing 331 to cover the first sampling component 31 and the second sampling component 32 from multiple directions. This enables the first sampling component 31 and the second sampling component 32 to be fixed more stably within the first housing 331, reducing the shaking and displacement of the first sampling component 31 and the second sampling component 32 within the first housing 331, and improving the overall stability of the first sampling component 31 and the second sampling component 32.

[0169] The solid first housing 331 can also better protect the first sampling component 31 and the second sampling component 32, reducing the damage that other external structures may cause to the first sampling component 31 and the second sampling component 32; at the same time, this setting can also better achieve the effect of electrical isolation, reducing the risk of electrostatic breakdown, short circuit and other risks.

[0170] The solid first housing 331 also allows for a higher degree of integration between the first sampling component 31 and the second sampling component 32, thus facilitating installation and disassembly.

[0171] For example, during the processing of the first box 331, the first sampling component 31 and the second sampling component 32 can be fixed at a certain position in the mold, and then a solid first box 331 can be formed by injection molding, die casting or other methods.

[0172] In this embodiment, the first housing 331 is a solid structural component, and the first housing 331 covers at least a portion of the first sampling component 31 and the second sampling component 32. At this time, the first housing 331 can better fix the first sampling component 31 and the second sampling component 32, and can better protect the covered portion of the first sampling component 31 and the second sampling component 32. This setting can also reduce the risk of discharge breakdown of the first sampling component 31 and the second sampling component 32, thereby improving the safety performance of the power distribution device 30. This setting can also improve the integrity of the first housing 331, the first sampling component 31 and the second sampling component 32, thereby further reducing the assembly difficulty.

[0173] Referring to Figures 5 and 9, in some embodiments, a processing port 3311 is provided on the first housing 331, and a portion of the first electrical connection structure 312 and the second sampling component 32 are exposed outside the first housing 331 through the processing port 3311.

[0174] The processing opening 3311 refers to the hole structure provided on the first box body 331. The processing opening 3311 can be a blind hole or a through hole. The processing opening 3311 can be a square hole, a round hole or other shaped hole structure. The processing opening 3311 can be a stepped hole, a straight hole, a conical hole or other shaped hole structure.

[0175] The first electrical connection structure 312 and a portion of the second sampling component 32 can be exposed outside the first housing 331 through the processing port 3311. That is, the operator can perform processing operations on the first electrical connection structure 312 and the second sampling component 32 through the processing port 3311. For example, when the second sampling component 32 includes a second sampling structure 321 and a second electrical connection structure 322, a portion of the second electrical connection structure 322 corresponds to the processing port 3311 so as to be exposed outside the first housing 331 through the processing port 3311.

[0176] When the first housing 331 is a training structural component and covers the first sampling component 31 and the second sampling component 32, the first sampling component 31 and the second sampling component 32 are prone to misalignment during the processing of the first housing 331. Furthermore, since the first electrical connection structure 312 and the second electrical connection structure 322 are typically quite long, they are even more prone to misalignment or skew during the processing of the first housing 331. Therefore, to reduce the misalignment of the first sampling component 31 and the second sampling component 32, they are usually connected by an intermediate connection structure. However, since the first electrical connection structure 312 and the second electrical connection structure 322 are used to transmit different signals, they are prone to mutual interference after being connected. Therefore, after the first housing 331 is processed, the operator can cut off the intermediate connection structure between the first sampling component 31 and the second sampling component 32 through the processing port 3311 to reduce mutual interference between them.

[0177] The intermediate connecting structure can be cut by stamping, shearing or other methods.

[0178] Understandably, after the intermediate connection structure is cut off, the minimum distance between the first electrical connection structure 312 and the second electrical connection structure 322 should still meet the requirements. That is, the length of the intermediate connection structure that is cut off should be greater than or equal to the minimum distance required between the first electrical connection structure 312 and the second electrical connection structure 322, so as to reduce the occurrence of mutual interference caused by discharge breakdown.

[0179] In this embodiment, a processing port 3311 is provided on the first housing 331 so that the first sampling component 31 and the second sampling component 32 can be processed after they are installed in the first housing 331.

[0180] Referring to FIG10, in some embodiments, the power distribution device 30 further includes a mounting member 34, in which the first sampling component 31 and the second sampling component 32 are both housed, and at least a portion of the first sampling structure 311 extends beyond the mounting member 34; the mounting member 34 is detachably connected to the first housing 331.

[0181] Mounting component 34 refers to the structure in the power distribution device 30 used to provide a fixed foundation for the first sampling component 31 and the second sampling component 32. Mounting component 34 also serves to protect the first sampling component 31 and the second sampling component 32. The shape of mounting component 34 can be prismatic, cylindrical, or other regular shapes, or it can be irregular. Mounting component 34 can be a solid structure, with the first sampling component 31 and the second sampling component 32 embedded in it. Mounting component 34 can also be a hollow structure, or it can have openings on one or more sides. The material of mounting component 34 can include metal, plastic, or other materials.

[0182] At least a portion of the first sampling structure 311 extends beyond the mounting member 34 to facilitate connection between the first sampling structure 311 and the device under test. When the first sampling assembly 31 includes a first electrical connection structure 312, the first electrical connection structure 312 may also extend beyond the mounting member 34 to facilitate connection with other external devices. When the second sampling assembly 32 includes a second sampling structure 321 and a second electrical connection structure 322, the second sampling structure 321 may be completely located within the mounting member 34, or only partially located within the mounting member 34, or completely located outside the mounting member 34. The second electrical connection structure 322 may extend beyond the mounting member 34 to facilitate connection with other external devices.

[0183] Mounting component 34 is detachably connected to the first housing 331. Mounting component 34 can be detachably connected to the first housing 331 by screwing, snap-fitting or other means. Mounting component 34 can be directly connected to the first housing 331, or it can be indirectly connected to the housing 331 through other structures inside the first housing 331.

[0184] During the processing of the power distribution device 30, it is only necessary to install the mounting part 34 at the required position of the first housing 331. The required position refers to the position where the part of the first sampling structure 311 extending beyond the mounting part 34 can be electrically connected to the corresponding device under test, so as to collect the status information of the corresponding device under test. At the same time, when the mounting part 34 is in the required position, the part of the first electrical connection structure 312 extending beyond the mounting part 34 can be connected to other corresponding external devices, so as to transmit electrical energy and electrical signals.

[0185] In this embodiment, a mounting component 34 is provided to support the first sampling component 31 and the second sampling component 32, thereby integrating the first sampling component 31 and the second sampling component 32 into a single structure, which facilitates installation and replacement by staff. Compared with the scheme of installing the first sampling component 31 and the second sampling component 32 separately in the housing 33, this embodiment simplifies the installation and disassembly process of the first sampling component 31 and the second sampling component 32, reduces the installation difficulty of the first sampling component 31 and the second sampling component 32, and improves the installation efficiency of the sampling components.

[0186] In some embodiments, the mounting member 34 is a solid structural member that covers at least a portion of the first sampling component 31 and the second sampling component 32.

[0187] The mounting component 34 is a solid structure, which allows it to cover the first sampling component 31 and the second sampling component 32 from multiple directions. This enables the first sampling component 31 and the second sampling component 32 to be fixed more stably within the mounting component 34, reducing the shaking and displacement of the first sampling component 31 and the second sampling component 32 within the mounting component 34 and improving the overall stability of the sampling components.

[0188] The solid mounting component 34 can also better protect the first sampling component 31 and the second sampling component 32, reducing the damage that may be caused to the first sampling component 31 and the second sampling component 32 by other external structures; at the same time, this setting can also better achieve the effect of electrical isolation, reducing the risk of electrostatic breakdown, short circuit and other risks.

[0189] The solid mounting component 34 also enables a higher degree of integration between the first sampling component 31 and the second sampling component 32, thereby facilitating installation and disassembly.

[0190] For example, during the processing, the first sampling component 31 and the second sampling component 32 can be fixed at a certain position in the mold first, and then a solid mounting part 34 can be formed by injection molding, die casting or other methods.

[0191] In this embodiment, the mounting component 34 is a solid structural component that covers at least a portion of the first sampling component 31 and the second sampling component 32. In this case, the mounting component 34 can better fix the first sampling component 31 and the second sampling component 32, and can better protect the covered portion of the first sampling component 31 and the second sampling component 32. At the same time, this arrangement can also reduce the risk of discharge breakdown of the first sampling component 31 and the second sampling component 32, thereby improving the safety performance of the power distribution device 30.

[0192] Referring to Figures 4 and 5, in some embodiments, the power distribution device 30 further includes a connection structure 35 connected to the first housing 331; one end of the first electrical connection structure 312 away from the first sampling structure 311 is connected to the side of the connection structure 35 facing the inside of the housing 33, and one end of the second sampling component 32 away from the first sampling structure 311 is connected to the side of the connection structure 35 facing the inside of the housing 33.

[0193] The connection structure 35 refers to the structure in the power distribution device 30 used to connect with other external devices. The connection structure 35 can be a terminal, socket, plug, or other structure that can connect with other external devices. The connection structure 35 is connected to the first housing 331. The connection structure 35 can be connected to the first housing 331 by welding, bonding, snap-fitting, or other means. The connection structure 35 can extend partially outside the first housing 331 and partially be located inside the receiving cavity of the first housing 331. The connection structure 35 can also be completely located inside the first housing 331 and have an opening on the first housing 331 so that other external structures can extend into the housing 331 and connect with the connection structure 35. The connection structure 35 can also be completely located outside the first housing 331 and connected to the structure inside the housing 33 through the electrical connection structure 35 such as a wire harness.

[0194] The first electrical connection structure 312 and the second electrical connection structure 322 are both connected to the side of the connection structure 35 facing the inside of the housing 33, so that other devices other than the power distribution device 30 can be connected to the side of the connection structure 35 facing the outside of the housing 33, thereby connecting the first sampling component 31 and the second sampling component 32 to other external devices; the ends of the first electrical connection structure 312 and the second electrical connection structure 322 connected to the connection structure 35 can be connected by welding, bonding, screwing or other means.

[0195] In this embodiment, a connection structure 35 is provided on the first housing 331, and the first sampling component 31 and the second sampling component 32 are both connected to the connection structure 35. The connection structure 35 can be connected to other structures so that the status information collected by the first sampling component 31 and the second sampling component 32 can be transmitted to other structures connected to the power distribution device 30 through the connection structure 35.

[0196] Referring to Figures 4 and 5, in some embodiments, the first housing 331 covers at least a portion of the connecting structure 35.

[0197] The first housing 331 covers at least a portion of the connecting structure 35 so that the connecting structure 35 can also be integrated with the first housing 331. The first housing 331 can cover the connecting structure 35 from multiple directions, but only leaves space on the side of the connecting structure 35 facing away from the housing 331, so that other external devices can be connected to the connecting structure 35.

[0198] The first box 331 encloses the connecting structure 35, which can stably fix the connecting structure 35 inside the first box 331, reduce the shaking and displacement of the connecting structure 35 inside the first box 331, and improve the overall stability of the first box 331.

[0199] The first housing 331 encloses the connecting structure 35, which can better protect the connecting structure 35 and reduce the damage that other external structures may cause to the connecting structure 35.

[0200] The first housing 331 encapsulates the connecting structure 35, which can also improve the integration of the first housing 331, thereby facilitating installation and disassembly.

[0201] For example, during the processing of the first box 331, the connecting structure 35 can be fixed at a certain position in the mold first, and then the first box 331 can be formed by injection molding, die casting or other methods.

[0202] In this embodiment, the first box 331 covers at least a portion of the connecting structure 35, so that the first box 331 can better fix the connecting structure 35 and provide protection for the covered portion of the connecting structure 35. At the same time, it can simplify the installation steps of the connecting structure 35, reduce the installation difficulty, and improve the processing and assembly efficiency.

[0203] Referring to Figures 4 and 8, in some embodiments, the power distribution device 30 further includes an intermediate structure 36, one side of which is connected to the first sampling structure 311, and the other side of which is configured to connect to the device under test.

[0204] The intermediate structure 36 refers to the structure in the power distribution device 30 used to connect to the device under test (DUT). One side of the intermediate structure 36 is connected to the DUT, and the other side is connected to the first sampling structure 311, so that the first sampling structure 311 can indirectly collect the status information of the DUT through the intermediate structure 36. The first sampling structure 311 is connected to the intermediate structure 36 by screwing, snapping, or other means. The DUT can be a relay, battery cell 20, or other device in the battery device 100.

[0205] With the intermediate structure 36 in place, the first sampling structure 311 is indirectly connected to the device under test through the intermediate structure 36.

[0206] When the power distribution device 30 includes a housing 33, the intermediate structure 36 can be connected to the housing 33 by welding, bonding, screwing or other means; the intermediate structure 36 is connected to the device under test by welding, bonding, screwing or other means.

[0207] Since only the first sampling structure 311 is connected to the intermediate structure 36, and the second sampling component 32 is connected to the first sampling structure 311, the volume of the intermediate structure 36 can be smaller to reduce space occupation, based on the fact that the first sampling structure 311 can be connected to the intermediate structure 36.

[0208] Based on the first state information collected by the first sampling structure 311, the material of the intermediate structure 36 may include conductive material, thermally conductive material or other materials; for example, the intermediate structure 36 is a copper busbar.

[0209] In this embodiment, an intermediate structure 36 is provided to connect the intermediate structure 36 to the device under test, so that the first sampling structure 311 can indirectly collect the status information of the device under test through the intermediate structure 36, thereby facilitating the arrangement of the positions of the first sampling component 31 and the second sampling component 32.

[0210] In some embodiments, the battery device 100 includes a housing 10, battery cells 20, and a power distribution device 30, both of which are housed within the housing 10.

[0211] The power distribution device 30 includes a housing 33, a first sampling component 31, and a second sampling component 32.

[0212] The first sampling component 31 includes a first sampling structure 311 and a first electrical connection structure 312. There are two first sampling structures 311, which are electrically connected to the positive and negative terminals of the device under test, respectively. The two first sampling structures 311 and the first electrical connection are integrally formed. Both the first sampling structure 311 and the first electrical connection structure 312 can be copper busbars.

[0213] The second sampling component 32 includes a second sampling structure 321 and a second electrical connection structure 322. The second sampling structure 321 is a negative temperature coefficient thermistor and is connected to the first sampling structure 311. There are two second electrical connection structures 322, which are respectively electrically connected to the positive and negative terminals of the second sampling structure 321. Both second electrical connection structures 322 can be copper busbars.

[0214] The housing 33 includes a first housing 331 and a second housing 332 that is fastened to the first housing 331. The first sampling component 31 and the second sampling component 32 are both connected to the first housing 331. The first housing 331 is also provided with a connection structure 35, which is an interface. The first electrical connection structure 312 and the second electrical connection structure 322 are both electrically connected to the side of the interface facing the inside of the housing 33.

[0215] The first housing 331 is a solid structural component and is integrally molded. The first housing 331 covers a portion of the first sampling component 31, a portion of the second sampling component 32, and a portion of the connecting structure 35. At least a portion of the first electrical connection structure 312 extends outside the first housing 331, the second sampling component 32 is completely covered inside the first housing 331, and the side of the connecting structure 35 facing the outside is not covered by the first housing 331.

[0216] Secondly, embodiments of this application also provide a battery device 100, including a housing 10, a battery cell 20, and a power distribution device 30. The battery cell 20 is housed within the housing 10; the power distribution device 30 is also housed within the housing 10.

[0217] The housing 10 refers to the structure in the battery device 100 that provides a fixed foundation for the battery cell 20, power distribution device 30, and other structures; the housing 10 can be cuboid, cylindrical, or other shapes.

[0218] A battery cell 20 refers to the smallest unit that makes up the battery device 100. A battery cell 20 can be a cylindrical structure, a prismatic structure, a sheet structure, or other shapes. The number of battery cells 20 can be one, two or more. When there are multiple battery cells 20, the multiple battery cells 20 can be arranged in one or two different directions. The multiple battery cells 20 can be connected in series, in parallel or in a mixed manner.

[0219] In this battery device, the first sampling component 31 and the second sampling component 32 in the power distribution device 30 of the battery device 100 are both connected to the device under test through the first sampling structure 311, which occupies a small space. At the same time, the power distribution device 30 has high assembly efficiency, the installation and disassembly of the first sampling component 31 and the second sampling component 32 are relatively easy, and the information transmission stability is high.

[0220] Thirdly, embodiments of this application also provide an electrical device, including the battery device 100 provided in some embodiments of the second aspect.

[0221] In this power supply device, the first sampling component 31 and the second sampling component 32 in the power distribution device 30 of the battery device 100 are both connected to the device under test through the first sampling structure 311, which occupies a small space. At the same time, the power distribution device 30 has high assembly efficiency, the installation and disassembly of the first sampling component 31 and the second sampling component 32 are relatively easy, and the information transmission stability is high.

[0222] 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, wherein, include: The first sampling component includes a first sampling structure and a first electrical connection structure connected to the first sampling structure. The first sampling structure is configured to electrically connect to a device under test (DUT) to collect first state information of the DUT. The first electrical connection structure is configured to transmit the first state information. The second sampling component is connected to the first sampling structure and is configured to acquire the second state information of the device under test.

2. The power distribution device according to claim 1, wherein, The number of the first sampling structures is two, and both of the first sampling structures are connected to the first electrical connection structure; The two first sampling structures are respectively configured to electrically connect the positive and negative terminals of the device under test.

3. The power distribution device according to claim 2, wherein, The number of the second sampling components is one, and the second sampling component is connected to either of the two first sampling structures.

4. The power distribution device according to claim 2, wherein, The number of the second sampling components is at least two, and the at least two second sampling components are respectively connected to two first sampling structures.

5. The power distribution device according to claim 1, wherein, The number of the first sampling structure is one, and the first sampling structure is configured to electrically connect the positive or negative terminal of the device under test.

6. The power distribution device according to any one of claims 1-5, wherein, The second sampling component includes a second sampling structure and a second electrical connection structure. The second sampling structure is connected to the first sampling structure, and the second electrical connection structure is electrically connected to the second sampling structure.

7. The power distribution device according to claim 6, wherein, The second sampling structure includes a temperature sampling structure, and there are two second electrical connection structures, which are respectively electrically connected to the positive and negative terminals of the second sampling structure.

8. The power distribution device according to claim 6 or 7, wherein, The minimum distance between the second electrical connection structure and the first electrical connection structure is greater than or equal to 9.5 mm.

9. The power distribution device according to any one of claims 6-8, wherein, The minimum spacing between the second electrical connection structure and the first electrical connection structure is greater than or equal to 19.1 mm.

10. The power distribution device according to any one of claims 1-9, wherein, In a direction perpendicular to the transmission direction of the first state information, the cross-sectional area of ​​the first electrical connection structure is smaller than the cross-sectional area of ​​the first sampling structure.

11. The power distribution device according to any one of claims 1-10, wherein, The first sampling structure is configured to acquire voltage information of the device under test; and / or, The second sampling component is configured to acquire temperature information of the device under test.

12. The power distribution device according to any one of claims 1-11, wherein, The power distribution device also includes a housing, which includes a first housing and a second housing connected to the first housing; Both the first sampling component and the second sampling component are connected to the first housing, at least a portion of the first sampling structure extends outside the housing, and at least a portion of the first electrical connection structure is housed within the housing.

13. The power distribution device according to claim 12, wherein, The first box is a solid structural component, and the first box covers at least a portion of the first sampling component and the second sampling component.

14. The power distribution device according to claim 12 or 13, wherein, The first housing has a processing opening, through which a portion of the first electrical connection structure and the second sampling component are exposed outside the first housing.

15. The power distribution device according to claim 13, wherein, The power distribution device further includes a mounting component, in which both the first sampling component and the second sampling component are housed, and at least a portion of the first sampling structure extends beyond the mounting component. The mounting component is detachably connected to the first housing.

16. The power distribution device according to claim 15, wherein, The mounting component is a solid structural component, and the mounting component covers at least a portion of the first sampling component and the second sampling component.

17. The power distribution device according to any one of claims 12-16, wherein, The power distribution device also includes a connection structure connected to the first housing; The end of the first electrical connection structure away from the first sampling structure is connected to the side of the connection structure facing the inside of the housing, and the end of the second sampling component away from the first sampling structure is connected to the side of the connection structure facing the inside of the housing.

18. The power distribution device according to claim 17, wherein, The first housing covers at least a portion of the connecting structure.

19. The power distribution device according to any one of claims 1-18, wherein, The power distribution device also includes an intermediate structure, one side of which is connected to the first sampling structure, and the other side of which is configured to connect to the device under test.

20. A battery device, characterized in that, include: Box; The battery cell is housed within the casing; as well as The power distribution device as described in any one of claims 1-19, wherein the power distribution device is housed in a enclosure.

21. An electrical appliance, wherein, Includes the battery device as described in claim 20.

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