Power distribution device, battery device and power utilization device

Abstract

The utility model is suitable for the technical field of batteries, and provides a power distribution device, a battery device and a power utilization device, the power distribution device comprises a box body and a sampling assembly; the sampling assembly comprises a shell, the shell is connected to the box body, a sampling structure and a first electric connection structure are arranged in the shell, at least part of the sampling structure extends out of the shell, the sampling structure is configured to be used for collecting state information of the battery monomers, and one end of the first electric connection structure is electrically connected to the sampling structure; the other end of the first electric connection structure extends out of the shell, and the first electric connection structure is configured to be used for transmitting state information collected by the sampling structure. According to the battery device provided by the embodiment of the invention, the shell is arranged, and the sampling structure and the first electric connection structure are integrated by taking the rigid shell as a fixing structure, so that the installation steps are simplified, and meanwhile, convenience is provided for automatic installation.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of batteries, and particularly relates to a power distribution device, a battery device and a power utilization device. BACKGROUND

[0002] Energy saving and emission reduction is the key to the sustainable development of the automobile industry. Electric vehicles have become an important part of the sustainable development of the automobile industry due to their energy saving and environmental protection advantages. For electric vehicles, battery technology is an important factor for their development.

[0003] The power distribution device is a device for obtaining state information of each electrical structure in the battery device and controlling each electrical structure according to the obtained state information. The power distribution device is an important structure in the battery device. In the current power distribution device, the installation of the sampling structure for collecting the state information of the electrical structure is relatively cumbersome, resulting in low processing and assembly efficiency of the power distribution device. CONTENT OF THE UTILITY MODEL

[0004] In view of the above problems, the application provides a power distribution device, a battery device and a power utilization device, which can alleviate the problem of low processing efficiency caused by the cumbersome installation process of the sampling structure.

[0005] In a first aspect, the application provides a power distribution device, comprising:

[0006] a box body, a sampling assembly at least partially accommodated in the box body, the sampling assembly comprising a shell connected to the box body, the shell being provided with a sampling structure and a first electrical connection structure inside, at least part of the sampling structure extending out of the shell, the sampling structure being configured to collect state information of a device to be measured, one end of the first electrical connection structure being electrically connected to the sampling structure, the other end of the first electrical connection structure extending out of the shell, the first electrical connection structure being configured to transmit the state information collected by the sampling structure.

[0007] In the technical solution of the embodiment, the shell is provided to accommodate the sampling structure and the first electrical connection structure, and the rigid shell is used as a fixing structure to integrate the sampling structure and the first electrical connection structure. The worker does not need to install the sampling structure and the first electrical connection structure separately, but only needs to install the shell on the box body, thereby simplifying the installation steps. In the case that the first electrical connection structure is a wire harness, the worker does not need to perform complex wire harness arrangement operations, thereby reducing the installation difficulty of the first electrical connection structure and providing convenience for automatic installation. The shell can also protect the sampling structure and the first electrical connection structure, thereby improving the stability of information transmission.

[0008] In some embodiments, the shell is a solid structure, the shell covers part of the first electrical connection structure, and the shell covers part of the sampling structure.

[0009] In the technical scheme of the embodiment, the shell is in a solid structure and covers part of the sampling structure and the first electric connection structure, so that the shell can better fix the sampling structure and the first electric connection structure and better protect the covered part of the sampling structure and the first electric connection structure, and the setting can also reduce the risk of short circuit discharge of the first electric connection structure, thereby improving the safety performance of the sampling assembly.

[0010] In some embodiments, a hole structure is arranged on the shell, and at least part of the sampling structure is arranged adjacent to the hole structure.

[0011] In the technical scheme of the embodiment, the hole structure is arranged on the shell to facilitate fixing one end of the shell with the hole structure by a rivet, a bolt or the like fixing structure, and part of the sampling structure is arranged adjacent to the hole structure, so that the sampling structure can be connected to the device to be measured or an external structure through the part and can be stably connected to the device to be measured through the fixing structure, thereby improving the stability of the connection between the sampling structure and the device to be measured.

[0012] In some embodiments, the shell is an injection molded structural member.

[0013] The technical scheme of the embodiment provides specific structures of the shell, so that the shell is an injection molded structural member, which facilitates the processing of the shell and the covering of the sampling structure and the first electric connection structure, and also reduces the overall weight of the sampling assembly and the processing difficulty of the sampling assembly.

[0014] In some embodiments, the shell is detachably connected to the box body.

[0015] In the technical scheme of the embodiment, the shell is detachably connected to the box body, so that the staff can easily install and replace the sampling assembly, and the installation and disassembly process of the sampling assembly is further simplified.

[0016] In some embodiments, the box body includes a first box body and a second box body, the first box body is buckled to the second box body to form a containing cavity, and the shell is contained in the containing cavity; the shell is detachably connected to the first box body.

[0017] The technical scheme of the embodiment provides specific structures of the box body, so that the box body includes a first box body and a second box body, and the sampling assembly is detachably installed in the first box body, so as to facilitate the installation of the sampling assembly, and the sampling assembly can also be located inside the box body to provide protection for the sampling assembly by the box body.

[0018] In some embodiments, the first box body includes a box body and at least two plate bodies, the plate bodies are arranged on the side of the box body body facing the second box body, the lengths of the at least two plate bodies are different, and the plate bodies are configured to abut against the shell; a clamping member is arranged on the side of the plate body away from the box body body, and the clamping member is configured to press and hold the shell to the box body body.

[0019] The technical scheme of the embodiment provides specific structures of the first box body, the plate body is arranged on the box body of the first box body, the clamping piece is arranged on the plate body, the shell is fixed through the plate body and the clamping piece, and the sampling assembly is fixed on the first box body, so that the difficulty of mounting the sampling assembly on the first box body is reduced, and the sampling assembly is convenient to mount.

[0020] In some embodiments, the shell and the box body are integrally formed.

[0021] The technical scheme of the embodiment provides another structure of the shell and the box body, so that the shell and the box body are integrally formed, thereby improving the integrity of the sampling assembly and the box body.

[0022] In some embodiments, the first electric connection structure is a hard structure.

[0023] In the technical scheme of the embodiment, the first electric connection structure is a hard structure, so as to reduce the possible deviation of the first electric connection structure during installation, reduce the installation difficulty of the first electric connection structure, and improve the stability of the sampling assembly.

[0024] In some embodiments, the first electric connection structure includes an intermediate part and an end part, one end of the intermediate part is connected to the sampling structure, and the other end of the intermediate part is connected to the end part; at least part of the end part and at least part of the sampling structure extend to outside the shell from different sides of the shell.

[0025] The technical scheme of the embodiment provides specific structures of the first electric connection structure, so that the first electric connection structure includes an intermediate part and an end part, the state information collected by the sampling structure is transmitted to the end part through the intermediate part, and the end part and the sampling structure can be located at different sides of the shell, so as to facilitate the first electric connection structure to transmit the state information collected by the sampling structure to other positions.

[0026] In some embodiments, in a direction perpendicular to the transmission direction of the state information, the cross-sectional area of the intermediate part is smaller than the cross-sectional area of the end part.

[0027] The technical scheme of the embodiment provides a size relationship between the intermediate part and the end part, so that the cross-sectional area of the end part is larger than the cross-sectional area of the intermediate part, so as to increase the contact area of the end part and other structures connected thereto, thereby improving the connection stability of the end part and the stability of information transmission.

[0028] In some embodiments, the power distribution device further includes an interface connected to the box body, the interface is electrically connected to a second electric connection structure on a side facing the inside of the box body; and the end part is electrically connected to the second electric connection structure.

[0029] The technical scheme of the embodiment provides specific structures of the box body, interfaces are arranged in the box body, second electric connection structures electrically connected to the interfaces are arranged, and the end is electrically connected to the second electric connection structures, so that the state information collected by the sampling assembly can be transmitted to other structures connected to the power distribution device through the second electric connection structures and the interfaces.

[0030] In some embodiments, the sampling structure includes a temperature sampling structure; the first electric connection structures are two, and the two first electric connection structures are connected to different sides of the sampling structure, respectively.

[0031] The technical scheme of the embodiment provides specific structures of the sampling assembly, so that the sampling assembly can collect temperature information and transmit the temperature information to other structures connected thereto through the first electric connection structures.

[0032] In some embodiments, the power distribution device further includes an intermediate structure arranged on the box body, one side of the intermediate structure is connected to the sampling structure, and the other side of the intermediate structure is configured to be connected to the device to be measured.

[0033] In the technical scheme of the embodiment, the intermediate structure is arranged, so that the intermediate structure is connected to the device to be measured, so that the sampling structure indirectly collects the device to be measured through the intermediate structure, thereby facilitating the arrangement of the position of the sampling assembly.

[0034] In a second aspect, the embodiments of the present application further provide a battery device, which includes a box body, a battery monomer contained in the box body, and the power distribution device provided by some embodiments of the first aspect, which is contained in the box body.

[0035] In a second aspect, the embodiments of the present application further provide a battery device, which includes a box body, a battery monomer contained in the box body, and the power distribution device provided by some embodiments of the first aspect, which is contained in the box body.

[0036] The above description is only a summary of the technical scheme of the present application, in order to more clearly understand the technical means of the present application, and to be implemented according to the content of the specification, and in order to make the above and other purposes, characteristics and advantages of the present application more obvious and easy to understand, the following specific embodiments of the present application are described. BRIEF DESCRIPTION OF DRAWINGS

[0037] By reading the detailed description of the preferred embodiments below, various other advantages and benefits will become clear to those of ordinary skill in the art. The drawings are only for the purpose of illustrating the preferred embodiments and are not considered limiting the present application. Moreover, the same reference numbers are used to represent the same components throughout the drawings. In the drawings:

[0038] Figure 1 The structural schematic diagram of the vehicle provided by some embodiments of the present application is shown;

[0039] Figure 2An exploded structural schematic diagram of a battery device provided for some embodiments of the present application;

[0040] Figure 3 An exploded structural schematic diagram of a battery cell provided for some embodiments of the present application;

[0041] Figure 4 A perspective schematic diagram of a power distribution device provided for some embodiments of the present application;

[0042] Figure 5 A perspective schematic diagram of an upper cover of a power distribution device provided for some embodiments of the present application;

[0043] Figure 6 A perspective schematic diagram of a sampling assembly provided for some embodiments of the present application;

[0044] Figure 7 A perspective structural schematic diagram of a sampling assembly after removing a shell provided for some embodiments of the present application;

[0045] Figure 8 A Figure 5 A partial enlarged schematic diagram at A in FIG.

[0046] The meanings of the labels in the figures are as follows:

[0047] 1000, a vehicle;

[0048] 100, a battery device;

[0049] 10, a box body; 11, a first box body; 12, a second box body;

[0050] 20, a battery cell; 21, a shell; 22, an end cover; 23, an electrode assembly; 24, an electrode terminal;

[0051] 30, a power distribution device; 31, a box body; 311, a first box body; 3111, a box body body; 3112, a plate body; 3113, a clamping piece; 312, a second box body; 32, a sampling assembly; 321, a shell; 3211, a hole structure; 322, a sampling structure; 323, a first electrical connection structure; 3231, a middle part; 3232, an end part; 33, an interface; 34, a second electrical connection structure; 35, an intermediate structure;

[0052] 200, a motor;

[0053] 300, a controller. DETAILED DESCRIPTION

[0054] The embodiments of the technical solutions of the present application will be described in detail below with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solutions of the present application, and therefore only serve as examples, and cannot limit the protection scope of the present application.

[0055] 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 belongs; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of this application; the use of the terms "including," "comprising," or "having" and variations thereof herein is intended to be broad and encompass the terms "consisting of" and "consisting essentially of" and variations thereof. The description herein of any embodiments, including preferred embodiments, is not intended to be limiting. Various

[0056] In the description of the embodiments of the present application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "multiple" is two or more, unless otherwise explicitly and specifically limited.

[0057] Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearance of the phrase in various places in the specification is not necessarily all referring to the same embodiment, or to a particular embodiment, or to a particular set of embodiments. It will be explicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0058] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B, which can represent the three cases of A existing alone, A and B existing together, and B existing alone. In addition, the character " / " in this paper generally represents that the front and rear associated objects are a "or" relationship.

[0059] In the description of the embodiments of the present application, the term "multiple" refers to two or more (including two), and similarly, "multiple groups" refers to two or more groups (including two groups), and "multiple pieces" refers to two or more pieces (including two pieces).

[0060] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the embodiments of the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the indicated devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the embodiments of the present application.

[0061] In the description of the embodiments of the present application, unless otherwise explicitly specified and limited, the technical terms "mounting", "connecting", "connecting", "fixing" and other terms should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0062] At present, from the development of market situation, the application of battery device is more and more widely. The battery device is not only applied to the energy storage power supply system of hydropower, thermal power, wind power and solar power station, but also widely used in electric bicycles, electric motorcycles, electric vehicles and other electric vehicles, military equipment, aerospace and other fields. With the continuous expansion of the application field of battery device, the market demand is also increasing.

[0063] In the battery device, the power distribution device is one of the important devices in the battery device, and the power distribution device can be used to obtain the state information of each electrical structure in the battery device and control each electrical structure according to the obtained state information. The power distribution device can include a battery disconnect unit (BDU), a battery management unit (BMU) or other control structure.

[0064] In the power distribution device, the state information of the electrical structure to be measured is usually collected by a sampling structure, and the state information is transmitted to other devices so that the corresponding device can make a corresponding response action according to the received state information. The state information collected by the sampling structure can be temperature information, voltage information or other information. In the current power distribution device, the sampling structure is usually connected to other structures through a wire harness, and the wire harness is a flexible structure. In order to stably fix the wire harness in the power distribution device, it is usually necessary to set fixed structure such as wire clip along the arrangement direction of the wire harness, which leads to a more complicated installation process of the sampling structure and the wire harness. The longer the length of the wire harness, the more the required fixed structure, and the more complicated the installation process of the wire harness, which greatly increases the difficulty of automatic installation of the sampling structure and the wire harness.

[0065] Based on the above consideration, in order to alleviate the problem of low processing efficiency caused by the complicated installation process of the sampling structure and the wire harness, the present application provides a power distribution device, which comprises a box body, and a sampling assembly is installed in the box body; the sampling assembly comprises a shell, and the sampling structure and the first electrical connection structure are arranged in the shell to fix the sampling structure and the first electrical connection structure by the shell.

[0066] In the power distribution device, the sampling structure and the first electrical connection structure are accommodated by the shell, and the sampling structure and the first electrical connection structure are integrated by the rigid shell as a fixing structure, so that the staff does not need to install the sampling structure and the first electrical connection structure respectively, and does not need to fix the first electrical connection structure by a large number of wire clamps and other fixing structural members, but only needs to install the shell on the box body, thereby simplifying the installation steps; meanwhile, in the case that the first electrical connection structure is a wire harness, the staff also does not need to perform the complex operation of wire harness arrangement, thereby reducing the installation difficulty of the first electrical connection structure and providing convenience for automatic installation; the shell can also protect the sampling structure and the first electrical connection structure, thereby improving the stability of information transmission.

[0067] The following embodiments take a vehicle 1000 as an example for convenience of description.

[0068] Reference Figure 1 , Figure 1 A structural schematic diagram of the vehicle 1000 is provided for some embodiments of the present application. The vehicle 1000 can be a fuel automobile, a gas automobile or a new energy automobile, and the new energy automobile can be a pure electric automobile, a hybrid electric automobile or a range extended automobile, etc. The vehicle 1000 is internally provided with a battery, which can be arranged at the bottom, the head or the tail of the vehicle 1000. The battery can be used for power supply of the vehicle 1000, for example, the battery can be used as an operating power supply of the vehicle 1000. The vehicle 1000 can further include a controller 300 and a motor 200, and the controller 300 is used to control the battery to supply power to the motor 200, for example, to meet the working power demand of the vehicle 1000 during starting, navigation and driving.

[0069] In some embodiments of the present application, the battery can not only be used as an operating power supply of the vehicle 1000, but also be used as a driving power supply of the vehicle 1000, to replace or partially replace fuel or natural gas to provide driving power for the vehicle 1000.

[0070] Reference Figure 2 , Figure 2 A disassembled structural schematic diagram of the battery apparatus 100 is provided for some embodiments of the present application.

[0071] The battery apparatus 100 mentioned in the embodiments of the present application can include one or more battery cell 20 assemblies for providing voltage and capacity. The battery cell 20 assembly can include a plurality of battery cells 20 connected in series, in parallel or in a mixed manner by a busbar component.

[0072] In some embodiments, the battery cell assembly 20 is typically formed by arranging a plurality of battery cells 20.

[0073] As an example, the battery cell assembly 20 can be a battery module, which is formed by arranging and fixing a plurality of battery cells 20 into one independent module. As an example, the battery module can be formed by bundling a plurality of battery cells 20 with a cable tie.

[0074] In some embodiments, the battery device 100 can be a battery pack, which includes the case 10 and one or more battery cell assemblies 20, which are accommodated in the case 10.

[0075] As an example, the battery cell assembly 20 can be a battery module, which is accommodated in the case 10 by fixing the battery module in the case 10.

[0076] As an example, the battery cell assembly 20 can also be accommodated in the case 10 by directly fixing a plurality of battery cells 20 in the case 10.

[0077] As an example, the case 10 can include a first case 11 and a second case 12. The first case 11 and the second case 12 are coupled so that an enclosed space is formed inside the case 10 to accommodate the battery cell assembly 20. Here, the enclosed means covered or closed, which can be sealed or unsealed. The first case 11 can be a top cover or a bottom plate.

[0078] As an example, the case 10 can 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 an enclosed space is formed inside the case 10 to accommodate the battery cell assembly 20.

[0079] In some embodiments, the case 10 can be a part of a chassis structure of the vehicle 1000. For example, a part of the case 10 can be at least a part of a floor of the vehicle 1000, or a part of the case 10 can be at least a part of a cross beam and a longitudinal beam of the vehicle 1000.

[0080] Reference Figure 3 , Figure 3 A schematic diagram of a disassembled structure of a battery cell 20 is provided for some embodiments of the present application. The battery cell 20 refers to the smallest unit that constitutes a battery. The battery cell 20 can be a secondary battery, which refers to a battery cell 20 that can be activated by charging after discharging the battery cell 20.

[0081] The battery cell 20 can be a lithium ion battery, a sodium ion battery, a sodium lithium ion battery, a lithium metal battery, a sodium metal battery, a lithium sulfur battery, a magnesium ion battery, a nickel hydrogen battery, a nickel cadmium battery, a lead-acid battery, etc., and the embodiments of the present application are not limited thereto.

[0082] As shown in the figure, the battery cell 20 includes an end cover 22, a shell 21, an electrode assembly 23, and other functional components.

[0083] The end cover 22 refers to a component that covers the opening of the shell 21 to isolate the internal environment of the battery cell 20 from the external environment. Without limitation, the shape of the end cover 22 can be adapted to the shape of the shell 21 to fit the shell 21. Alternatively, the end cover 22 can be made of a material with certain hardness and strength, such as aluminum alloy, so that the end cover 22 is not easily deformed when subjected to extrusion and collision, enabling the battery cell 20 to have higher structural strength and safety performance. The end cover 22 can be provided with functional components such as an electrode terminal 24. The electrode terminal 24 can be used to electrically connect with the electrode assembly 23 for outputting or inputting the electrical energy of the battery cell 20. In some embodiments, the end cover 22 can also be provided with a pressure relief mechanism for relieving the internal pressure when the internal pressure or temperature of the battery cell 20 reaches a threshold value. The material of the end cover 22 can also be various, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc., and the embodiments of the present application are not specially limited thereto. In some embodiments, an insulating piece can also be provided on the inner side of the end cover 22, which can be used to isolate the electrical connection components in the shell 21 from the end cover 22 to reduce the risk of short circuit. Exemplarily, the insulating piece can be plastic, rubber, etc.

[0084] The shell 21 is a component for fitting the end cover 22 to form the internal environment of the battery cell 20, wherein the formed internal environment can be used to accommodate the electrode assembly 23, the electrolyte, and other components. The shell 21 and the end cover 22 can be independent components, and an opening can be provided on the shell 21, and the end cover 22 is covered on the opening to form the internal environment of the battery cell 20. Without limitation, the end cover 22 and the shell 21 can also be integrated, specifically, the end cover 22 and the shell 21 can form a common connecting surface before other components enter the shell, and when it is necessary to encapsulate the internal environment of the shell 21, the end cover 22 is covered on the shell 21. The shell 21 can be various shapes and sizes, such as a cuboid, a cylinder, a hexagonal prism, etc. Specifically, the shape of the shell 21 can be determined according to the specific shape and size of the electrode assembly 23. The material of the shell 21 can be various, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc., and the embodiments of the present application are not specially limited thereto.

[0085] The electrode assembly 23 is a component in which an electrochemical reaction occurs in the battery cell 20. One or more electrode assemblies 23 can be contained within the case 21. The electrode assembly 23 is mainly formed by winding or layering a positive electrode sheet and a negative electrode sheet, and a separator is generally provided between the positive electrode sheet and the negative electrode sheet. The positive electrode sheet and the negative electrode sheet have portions with active materials that constitute a main body of the electrode assembly 23, and portions without active materials that each constitute a tab. The positive electrode tab and the negative electrode tab can be located together at one end of the main body or at opposite ends of the main body. During charging and discharging of the battery, the positive electrode active material and the negative electrode active material react with the electrolyte, and the tabs connect the electrode terminal 24 to form a current loop.

[0086] In a first aspect, with reference to Figures 4 to 7 Some embodiments of the present application provide a power distribution device 30, including a box body 31 and a sampling assembly 32. Wherein at least part of the sampling assembly 32 is contained in the box body 31; the sampling assembly 32 includes a shell 321 connected to the box body 31, and the shell 321 is provided with a sampling structure 322 and a first electrical connection structure 323, at least part of the sampling structure 322 extends out of the shell 321, the sampling structure 322 is configured to collect state information of a device to be measured in the battery device 100, one end of the first electrical connection structure 323 is electrically connected to the sampling structure 322, the other end of the first electrical connection structure 323 extends out of the shell 321, and the first electrical connection structure 323 is configured to transmit the state information collected by the sampling structure 322.

[0087] The power distribution device 30 refers to a structure in the battery device 100 for controlling the state of other electrical structures, the power distribution device 30 can collect or receive state information of the corresponding electrical structure, and can control the working state of the corresponding electrical structure according to the state information, the power distribution device 30 can include a battery disconnect unit (BDU) of the battery device 100, and the power distribution device 30 can also include a battery management unit (BMU), a cell supervision circuit (CSC), etc.

[0088] The box body 31 refers to a structure in the power distribution device 30 for providing a fixed basis for the sampling assembly 32, the interface 33 or other structures, the box body 31 can be a closed structure, or an open structure with one or more sides open; the box body 31 is contained in the box 10, and the box body 31 can be directly connected to the box 10 or connected to other structures in the box 10; the shape of the box body 31 can be cuboid, cylindrical or other shapes; the material of the box body 31 can include metal, plastic or other materials.

[0089] The sampling assembly 32 refers to a structure in the power distribution device 30 for collecting state information of a corresponding device under test. The sampling assembly 32 can be used to collect state information of the battery monomer 20, or can be used to collect state information of other structures such as relays, etc. The state information collected by the sampling assembly 32 can be temperature, voltage, or other information. The sampling assembly 32 can collect state information of only one electrical structure, or can collect state information of multiple electrical structures. The number of sampling assemblies 32 can be one, or two or more.

[0090] According to the position of the device under test, the sampling structure 322 can be completely accommodated in the box body 31, or can be only partially accommodated in the box body 31, and the other part of the sampling structure 322 extends out of the box body 31.

[0091] The sampling assembly 32 includes a shell 321, a sampling structure 322, and a first electrical connection structure 323.

[0092] The shell 321 refers to a structure in the sampling assembly 32 for providing a fixed basis for the sampling structure 322 and the first electrical connection structure 323. The shell 321 can also serve to protect the sampling structure 322 and the first electrical connection structure 323. The shape of the shell 321 can be prismatic, cylindrical, or other regular shapes. The shell 321 can also be irregularly shaped. The shell 321 can be a solid structure with the sampling structure 322 and the first electrical connection structure 323 embedded therein. The shell 321 can also be a hollow structure, or can be a structure with one or more sides having openings. The shell 321 is connected to the box body 31. The shell 321 can be directly connected to the box body 31, or can be indirectly connected to the box body 31 through other structures. The material of the shell 321 can include metal, plastic, or other materials.

[0093] The sampling structure 322 refers to a structure in the sampling assembly 32 for collecting state information of a corresponding electrical structure. The sampling structure 322 can include a temperature sensor, or can be a voltage collection terminal or other structure. One sampling assembly 32 can include only one sampling structure 322, or can include two or more sampling structures 322. In the case where the sampling assembly 32 includes multiple sampling structures 322, the multiple sampling structures 322 can collect state information of different electrical structures, or can collect different state information of the same electrical structure.

[0094] The sampling structure 322 is accommodated in the shell 321. The sampling structure 322 can be directly connected to the shell 321, or can be indirectly connected to the shell 321 through other structures. At least part of the sampling structure 322 extends out of the shell 321, so as to facilitate the sampling structure 322 to collect state information of a corresponding electrical structure.

[0095] The first electric connection structure 323 refers to a structure for outputting and inputting electric energy and electric signals in the sampling assembly 32. The first electric connection structure 323 can be a wire harness, a metal plate or other conductive structure. One end of the first electric connection structure 323 is electrically connected to the sampling structure 322, and the other end of the first electric connection structure 323 extends out of the shell 321. The other end of the first electric connection structure 323 is used to be connected to other devices outside. At this time, the state information collected by the sampling structure 322 can be transmitted to the devices connected to the first electric connection structure 323 through the first electric connection structure 323. The devices connected to the first electric connection structure 323 can also provide electric energy and electric signals to the sampling structure 322 through the first electric connection structure 323.

[0096] The first electric connection structure 323 is accommodated in the shell 321. The first electric connection structure 323 can be directly connected to the shell 321 or indirectly connected to the shell 321 through other structures. At least part of the first electric connection structure 323 extends out of the shell 321, so that the first electric connection structure 323 can be connected to other devices.

[0097] During the processing of the power distribution device 30, only the shell 321 needs to be installed at a required position of the box body 31. The required position refers to a position at which the part of the sampling structure 322 extending out of the shell 321 can be electrically connected to the corresponding electric structure, so as to collect the state information of the corresponding electric structure. Meanwhile, when the shell 321 is at the required position, the part of the first electric connection structure 323 extending out of the shell 321 can be connected to the corresponding other devices, so as to transmit electric energy and electric signals.

[0098] In this embodiment, the shell 321 is provided to accommodate the sampling structure 322 and the first electric connection structure 323. The rigid shell 321 is used as a fixing structure to integrate the sampling structure 322 and the first electric connection structure 323. Therefore, the worker does not need to separately install the sampling structure 322 and the first electric connection structure 323, but only needs to install the shell 321 on the box body 31, thereby simplifying the installation steps. Meanwhile, when the first electric connection structure 323 is a wire harness, the worker does not need to perform the complex operation of arranging the wire harness, thereby reducing the installation difficulty of the first electric connection structure 323 and providing convenience for automatic installation. The shell 321 can also protect the sampling structure 322 and the first electric connection structure 323, thereby improving the stability of information transmission.

[0099] In some embodiments, the shell 321 is a solid structure. The shell 321 covers part of the first electric connection structure 323, and the shell 321 covers part of the sampling structure 322.

[0100] The shell 321 is a solid structure, so that the shell 321 can cover the sampling structure 322 and the first electrical connection structure 323 from multiple directions, so as to more stably fix the sampling structure 322 and the first electrical connection structure 323 in the shell 321, reduce the shaking and deviation of the sampling structure 322 and the first electrical connection structure 323 in the shell 321, and improve the overall stability of the sampling assembly 32.

[0101] The solid shell 321 can also better protect the sampling structure 322 and the first electrical connection structure 323, reduce damage that other external structures may cause to the sampling structure 322 and the first electrical connection structure 323, and better achieve electrical isolation, reducing the risk of electrostatic breakdown and short circuit.

[0102] The solid shell 321 can also have higher integration of the sampling assembly 32, thereby facilitating installation and disassembly.

[0103] For example, during the processing of the sampling assembly 32, the sampling structure 322 and the first electrical connection structure 323 can be fixed at a certain position of a mold, and then the solid shell 321 is formed by injection molding, die casting or the like.

[0104] In this embodiment, the shell 321 is a solid structure and covers part of the sampling structure 322 and the first electrical connection structure 323, so that the shell 321 can better fix the sampling structure 322 and the first electrical connection structure 323, and can better protect the covered part of the sampling structure 322 and the first electrical connection structure 323. At the same time, this arrangement can also reduce the risk of discharge short circuit of the first electrical connection structure 323, thereby improving the safety performance of the sampling assembly 32.

[0105] Reference Figures 4 to 7 In some embodiments, the shell 321 is provided with a hole structure 3211, and at least part of the sampling structure 322 is arranged adjacent to the hole structure 3211.

[0106] The hole structure 3211 is arranged on the shell 321, and the hole structure 3211 can be a circular hole, a square hole or other shaped hole structure 3211. The hole structure 3211 can be a straight hole, a stepped hole, a tapered hole or other shaped hole structure 3211. The hole structure 3211 is used for the fixing structure such as a bolt or a rivet to pass through, so as to fix the shell 321 on the device to be measured.

[0107] At least part of the sampling structure 322 is arranged adjacent to the hole structure 3211, the part of the sampling structure 322 can extend into the hole structure 3211, and the part of the sampling structure 322 can also be located beside the hole structure 3211, so that the sampling structure 322 can be connected with the corresponding electrical structure outside the shell 321; it can be understood that, in the case that the sampling structure 322 is arranged adjacent to the hole structure 3211, an opening can be formed on the shell 321, and the opening corresponds to at least part of the sampling structure 322, so as to facilitate the connection of the sampling structure 322 with the corresponding electrical structure outside the shell 321.

[0108] In the embodiment, the hole structure 3211 is arranged on the shell 321, so that one end of the shell 321 with the hole structure 3211 is fixed by a rivet, a bolt or the like; and part of the sampling structure 322 is arranged adjacent to the hole structure 3211, so that the sampling structure 322 can be connected with the device to be measured or an external structure through the part, and can be stably connected with the device to be measured through the fixing structure, which improves the stability of the connection between the sampling structure 322 and the device to be measured.

[0109] In some embodiments, the shell 321 is an injection molded structure.

[0110] The shell 321 is an injection molded structure, that is, the shell 321 is a plastic structure formed by an injection molding process, the injection molding process refers to a process of injecting molten plastic material into a mold and solidifying to form a plastic product of a desired shape; the injection molded structure has high production efficiency and is suitable for automatic production, and the structure and shape of the injection molded structure can be more complex, has high quality consistency, high strength and durability.

[0111] For the sampling assembly 32, the sampling structure 322 and the first electrical connection structure 323 can be placed in an injection mold first, then plastic material is injected into the mold, and solidified to form the sampling assembly 32; such a sampling assembly 32 has high strength and durability, and also has high stability and consistency, and the sampling structure 322 and the first electrical connection structure 323 are difficult to deviate, and the positions of the sampling structure 322 and the first electrical connection structure 323 are also more stable and difficult to deviate after the sampling assembly 32 is installed in the box body 31.

[0112] The embodiment provides specific structures of the shell 321, so that the shell 321 is an injection molded structure, which facilitates the processing of the shell 321 and the covering of the sampling structure 322 and the first electrical connection structure 323, and also reduces the processing difficulty of the sampling assembly 32.

[0113] In some embodiments, the shell 321 is detachably connected to the box body 31.

[0114] The shell 321 is detachably connected to the box body 31. The shell 321 can be detachably connected to the box body 31 by screwing, clamping or other means. The shell 321 can be directly connected to the box body 31 or indirectly connected to the box body 31 through other structures in the box body 31.

[0115] Since the sampling assembly 32 is an integral structure integrated with the shell 321, the shell 321 is detachably connected to the box body 31 in this embodiment, thereby facilitating the installation and replacement of the sampling assembly 32 by the staff. Compared with the scheme of separately installing the sampling structure 322 and the first electrical connection structure 323 on the box body 31, compared with the complex installation process when the first electrical connection structure 323 is a wire harness, this embodiment further simplifies the installation and disassembly process of the sampling assembly 32 and improves the installation efficiency of the sampling assembly 32.

[0116] Reference Figure 4 , Figure 5 In some embodiments, the box body 31 includes a first box body 311 and a second box body 312. The first box body 311 is buckled to the second box body 312 and forms an accommodation cavity. The shell 321 is accommodated in the accommodation cavity. The shell 321 is detachably connected to the first box body 311.

[0117] The first box body 311 and the second box body 312 are part of the box body 31. The first box body 311 can be buckled to the second box body 312 and jointly define an accommodation cavity for accommodating the sampling assembly 32 or other structures.

[0118] In addition to the first box body 311 and the second box body 312, the box body 31 can also include other structures. For example, the box body 31 can include a frame structure with openings at both ends. At this time, the first box body 311 and the second box body 312 are respectively arranged at the two opening sides of the frame interface 33. The first box body 311 and the second box body 312 are indirectly connected through the frame structure and buckled to each other.

[0119] The first box body 311 can be a hollow structure with one end open. The first box body 311 can also be a plate structure or other shaped structure. The shape of the first box body 311 can be circular, square or other shapes. The shape of the first box body 311 can also be set according to the shape of the box body 31. The first box body 311 can be buckled to the second box body 312 by screwing, clamping or other means. The material of the first box body 311 can include metal, plastic or other materials.

[0120] Similar to the first box body 311, the second box body 312 can be a hollow structure with one end open, and the second box body 312 can also be a plate structure or other shaped structure; the shape of the second box body 312 can be circular, square or other shapes, and the shape of the second box body 312 can also be set according to the shape of the box body 31; the second box body 312 can be fastened, clamped or connected to the second box body 312 by other means; the material of the second box body 312 can include metal, plastic or other materials.

[0121] The first box body 311 can be the top structure of the box body 31, and correspondingly, the second box body 312 can be the bottom structure of the box body 31; the first box body 311 can also be the bottom structure of the box body 31, and correspondingly, the second box body 312 can be the top structure of the box body 31.

[0122] The accommodation cavity refers to the space structure formed by the mutual fastening of the first box body 311 and the second box body 312, and the accommodation cavity can be a cuboid space structure, a cylindrical space structure or other shaped space structure, and the shape of the accommodation cavity can also be set according to the shape of the first box body 311 and the second box body 312.

[0123] The shell 321 is detachably connected to the first box body 311, and the shell 321 can be detachably connected to the first box body 311 by screwing, clamping or other means; the shell 321 can be directly connected to the first box body 311, or indirectly connected to the first box body 311 through other structures in the first box body 311.

[0124] The shell 321 is connected to the first box body 311, and during the processing and assembly of the power distribution device 30, the shell 321 can be installed on the first box body 311 first, and then the first box body 311 is fastened to the second box body 312, and in this way, the sampling assembly 32 is located in the accommodation cavity.

[0125] The embodiment provides some specific structures of the box body 31, so that the box body 31 includes the first box body 311 and the second box body 312, and the sampling assembly 32 is detachably installed on the first box body 311, so as to facilitate the installation of the sampling assembly 32, and also make the sampling assembly 32 can be located inside the box body 31, so as to provide protection for the sampling assembly 32 through the box body 31.

[0126] Reference Figure 4 , Figure 5 , Figure 8In some embodiments, the first box body 311 comprises a box body 3111 and at least two plate bodies 3112, the plate bodies 3112 are arranged on the side of the box body 3111 facing the second box body 312, and the plate bodies 3112 are configured to abut against the shell 321; the side of the plate bodies 3112 away from the box body 3111 is provided with a clamping piece 3113, and the clamping piece 3113 is configured to press and hold the shell 321 to the box body 3111.

[0127] The box body 3111 refers to the main part of the first box body 311, and is used to provide a fixed basis for the plate bodies 3112, the sampling assembly 32 and other structures, and is also used to cooperate with the second box body 312 to define the accommodation cavity; according to the structure of the first box body 311, the box body 3111 is a plate-shaped structure, which can also be a hollow structure with one side open; the shape of the box body 3111 can be circular, square or other shapes; the material of the box body 3111 can include metal, plastic or other materials.

[0128] The plate body 3112 refers to a structure on the box body 3111 for limiting the position of the shell 321, and is used to abut against the shell 321 to limit the displacement of the shell 321 in the accommodation cavity, thereby playing a role in fixing the shell 321; the plate body 3112 is arranged on the side of the box body 3111 facing the second box body 312, so that the shell 321 can be located between the box body 3111 and the second box body 312, i.e. the shell 321 can be located in the accommodation cavity; the plate body 3112 can be directly connected to the box body 3111, or indirectly connected to the box body 3111 through other structures; the plate body 3112 can be connected to the box body 3111 by welding, bonding or other means, or can be integrally formed with the box body 3111; the shape of the plate body 3112 can be circular, square or other shapes; the material of the plate body 3112 can include metal, plastic or other materials, and the material of the plate body 3112 can be the same as or different from that of the box body 3111.

[0129] The number of plate bodies 3112 is at least two, i.e. the number of plate bodies 3112 can be two, three or more; the length direction of the at least two plate bodies 3112 can be the same, i.e. the at least two plate bodies 3112 are parallel to each other; the length direction of the at least two plate bodies 3112 is different, i.e. the at least two plate bodies 3112 are not parallel.

[0130] In the case that the number of the plate bodies 3112 is two, the length directions of the two plate bodies 3112 can be the same, and in this case, the two plate bodies 3112 clamp the shell 321 to fix the shell 321; in the case that the number of the plate bodies 3112 is two, the length directions of the two plate bodies 3112 can also be different, that is, different plate bodies 3112 can abut against different sides of the shell 321 to limit the displacement of the shell 321 in different directions.

[0131] The clamping piece 3113 refers to a structure in the first box body 311 for clamping the shell 321, and the clamping piece 3113 can press and hold the shell 321 to the box body 3111 to limit the displacement of the shell 321 in the direction perpendicular to the box body 3111; the shape of the clamping piece 3113 can be a triangular pyramid, a prism or other shapes; the number of the clamping piece 3113 can be one, two or more; the clamping piece 3113 is connected to the plate body 3112, and the clamping piece 3113 can be connected to the plate body 3112 by welding, bonding or other means, or the clamping piece 3113 can be integrally formed with the plate body 3112; the material of the clamping piece 3113 can include metal, plastic or other materials, and the material of the clamping piece 3113 can be the same as or different from that of the plate body 3112.

[0132] The clamping piece 3113 is arranged on the side of the plate body 3112 away from the box body 3111 to fix the shell 321 between the clamping piece 3113 and the box body 3111; in the case that the number of the plate bodies 3112 is at least two, the clamping piece 3113 can be arranged on only one plate body 3112, on several plate bodies 3112, or on each plate body 3112, and one plate body 3112 can have only one clamping piece 3113, or two or more clamping pieces 3113.

[0133] The shell 321 can be provided with a clamping groove, a clamping body or other structures corresponding to the clamping piece 3113, or the shell 321 can not be provided with corresponding structures to fix the position of the shell 321 relative to the box body 3111 by cooperation of the clamping piece 3113 and the plate body 3112.

[0134] Since the clamping piece 3113 abuts against the side of the shell 321 away from the box body 3111, during installation of the shell 321, the clamping piece 3113 and / or the plate body 3112 should be able to deform in the direction perpendicular to the installation direction of the clamping piece 3113 to facilitate installation of the shell 321; after installation of the shell 321 is completed, the clamping piece 3113 and / or the plate body 3112 should be able to reset to limit the displacement of the shell 321.

[0135] The embodiment provides specific structures of the first box body 311. The plate body 3112 is arranged on the box body proper 3111 of the first box body 311, and the clamping piece 3113 is arranged on the plate body 3112, the shell 321 is fixed through the plate body 3112 and the clamping piece 3113, and the sampling assembly 32 is fixed on the first box body 311, so that the difficulty of mounting the sampling assembly 32 on the first box body 311 is reduced, and the sampling assembly 32 is convenient to mount.

[0136] In some embodiments, the shell 321 and the box body 31 are integrally formed structural members.

[0137] The shell 321 and the box body 31 are integrally formed structural members, that is, the shell 321 and the box body 31 are integrally formed structural members, that is, the shell 321 and the box body 31 are integrally formed through an integral forming process. The shell 321 and the box body 31 can be integrally formed through injection molding, die casting or other integral forming processes. In the case that the box body 31 includes the first box body 311 and the second box body 312 and the shell 321 is connected to the first box body 311, the shell 321 and the first box body 311 are integrally formed structural members.

[0138] For example, in the case that the shell 321 and the box body 31 are integrally formed through injection molding, the sampling structure 322 and the first electrical connection structure 323 can be placed in an injection mold during processing of the shell 321 and the box body 31, plastic material is then injected into the mold, and the shell 321 and the box body 31 are formed by solidification. Such a box body 31 has high strength and durability, and also has high stability and consistency. The positions of the sampling structure 322 and the first electrical connection structure 323 are also more stable and difficult to deviate.

[0139] The embodiment provides another structure of the shell 321 and the box body 31, so that the shell 321 and the box body 31 are integrally formed, thereby improving the integrity of the sampling assembly 32 and the box body 31.

[0140] Reference Figure 6 , Figure 7 In some embodiments, the first electrical connection structure 323 is a hard structural member.

[0141] Since the first electrical connection structure 323 is a hard structural member, and the first electrical connection structure 323 is used for transmitting electric energy and electric signals, the material of the first electrical connection structure 323 can include copper, aluminum, nickel, carbon-based materials (such as graphite, carbon fiber, etc.) and the like.

[0142] The first electric connection structure 323 is a hard structure, and in the case that the shell 321 is a solid one-piece structure, this arrangement can reduce the deviation of the first electric connection structure 323 during the processing of the shell 321, thereby improving the consistency and stability of the sampling assembly 32; in the case that the shell 321 is of other structures, this arrangement can also reduce the risk of deviation of the first electric connection structure 323 and improve the overall stability of the sampling assembly 32.

[0143] For example, in the case that the shell 321 is a one-piece injection molding structure, during the process of placing the sampling structure 322 and the first electric connection structure 323 in the mold, the first electric connection structure 323 being a hard structure can facilitate the fixing of the position of the first electric connection structure 323 by the staff; during the process of injecting the molten injection material into the mold, the first electric connection structure 323 being a hard material can also reduce the risk of deviation of the first electric connection structure 323.

[0144] In this embodiment, the first electric connection structure 323 is a hard structure to reduce the possible deviation of the first electric connection structure 323 during installation, thereby reducing the installation difficulty of the first electric connection structure 323 and improving the stability of the sampling assembly 32.

[0145] Reference Figure 6 、 Figure 7 In some embodiments, the first electric connection structure 323 includes an intermediate part 3231 and an end part 3232, one end of the intermediate part 3231 is connected to the sampling structure 322, and the other end of the intermediate part 3231 is connected to the end part 3232; at least part of the end part 3232 and at least part of the sampling structure 322 extend outside the shell 321 from different sides of the shell 321 respectively.

[0146] The intermediate part 3231 refers to the part of the first electric connection structure 323 connected to the sampling structure 322, and the intermediate part 3231 is mainly used for transmitting electric energy and electric signals to the sampling structure 322 and for transmitting the state information collected by the sampling structure 322; one end of the intermediate part 3231 is connected to the sampling structure 322, and the intermediate part 3231 can be connected to the sampling structure 322 by welding, screwing or other means, so that the intermediate part 3231 can exchange electric energy and electric signals with the sampling structure 322; the intermediate part 3231 can include a wire harness or a hard conductor structure, for example, the intermediate part 3231 is a copper bar.

[0147] The end portion 3232 refers to a portion of the first electrical connection structure 323 for connecting with an external structure, the end portion 3232 can be connected to an external structure outside the sampling assembly 32, the end portion 3232 can be used to transmit the state information collected by the sampling structure 322 to the connected external structure, and the end portion 3232 can also be used to transmit the power, electrical signal and the like provided by the external structure to the sampling structure 322 through the intermediate portion 3231.

[0148] The end portion 3232 is connected to one end of the intermediate portion 3231 away from the sampling structure 322, the end portion 3232 can be connected to the intermediate portion 3231 by welding, bonding or other means, and the end portion 3232 can also be integrally formed with the intermediate portion 3231; the end portion 3232 can be a plug, a socket or the like structure, or a wire harness, a hard conductor or the like structure, for example, the end portion 3232 is a copper bar and is integrally formed with the intermediate portion 3231.

[0149] At least part of the end portion 3232 extends outside the shell 321, that is, the end portion 3232 can extend completely outside the shell 321, or can extend only partially outside the shell 321, so as to connect the end portion 3232 with the external structure; in the case where the end portion 3232 extends completely outside the shell 321, part of the intermediate portion 3231 can also extend outside the shell 321.

[0150] At least part of the end portion 3232 and at least part of the sampling structure 322 extend outside the shell 321 from different sides of the shell 321, that is, the end portion 3232 and the sampling structure 322 are located at different sides of the shell 321, so that the sampling structure 322 can transmit the state information collected through the intermediate portion 3231 and the end portion 3232 to other structures at different positions in the box body 31.

[0151] The embodiment provides some specific structures of the first electrical connection structure 323, so that the first electrical connection structure 323 includes the intermediate portion 3231 and the end portion 3232, so as to transmit the state information collected by the sampling structure 322 to the end portion 3232 through the intermediate portion 3231; the end portion 3232 and the sampling structure 322 can be located at different sides of the shell 321, so as to transmit the state information collected by the sampling structure 322 to other positions by the first electrical connection structure 323.

[0152] Reference Figure 6 、 Figure 7 In some embodiments, in a direction perpendicular to the transmission direction of the state information, the cross-sectional area of the intermediate portion 3231 is smaller than the cross-sectional area of the end portion 3232.

[0153] The transmission direction of the state information refers to the direction and distance of the state information transmitted from the sampling structure 322 to the end portion 3232 along the intermediate portion 3231, and also refers to the direction and distance of the electric energy and electric signal transmitted from the end portion 3232 to the sampling structure 322 through the intermediate portion 3231.

[0154] The cross-sectional area of the intermediate portion 3231 in the information transmission direction reflects the volume of the intermediate portion 3231, and the cross-sectional area of the end portion 3232 in the information transmission direction reflects the volume of the end portion 3232. Since the intermediate portion 3231 is only used for transmitting electric energy and electric signal, and the end portion 3232 is used for connecting with other structures in addition to transmitting electric energy and electric signal, the cross-sectional area of the end portion 3232 is larger than that of the intermediate portion 3231, that is, the volume of the end portion 3232 is larger, so that the end portion 3232 can have a larger contact area with the connected other structures, thereby facilitating the end portion 3232 to better transmit electric energy and electric signal, and also facilitating the end portion 3232 to be more stably connected to the connected other structures.

[0155] The embodiment provides some size relationships between the intermediate portion 3231 and the end portion 3232, so that the cross-sectional area of the end portion 3232 is larger than that of the intermediate portion 3231, to increase the contact area of the end portion 3232 with the connected other structures, thereby being able to improve the connection stability of the end portion 3232 and the stability of information transmission.

[0156] Reference Figure 4 、 Figure 5 、 Figure 8 In some embodiments, the power distribution device 30 further comprises an interface 33 connected to the box body 31, and the second electric connection structure 34 is electrically connected to one side of the interface 33 facing the inside of the box body 31; and the end portion 3232 is electrically connected to the second electric connection structure 34.

[0157] The interface 33 refers to a structure in the power distribution device 30 for connecting with other devices outside, and the interface 33 can be a terminal, a socket, a plug or other structures capable of connecting with other devices outside; the interface 33 is connected to the box body 31, and the interface 33 can be connected to the box body 31 by welding, bonding, clamping or other ways; the interface 33 can partially extend outside the box body 31 and partially be located in the accommodation cavity of the box body 31, or the interface 33 can be completely located inside the box body 31 and openings are provided on the box body 31 to facilitate other structures outside to extend into the box body 31 and connect with the interface 33; or the interface 33 can be completely provided outside the box body 31 and connected to the structure inside the box body 31 through a wire harness or other electric connection structure.

[0158] The second electric connection structure 34 refers to a structure for outputting and inputting electric energy and electric signals in the power distribution device 30. The second electric connection structure 34 can be a wire harness, a metal plate or other conductive structure. One end of the second electric connection structure 34 is connected to the end of the connector facing the inside of the box body 31, and the other end of the second electric connection structure 34 is connected to the end portion 3232. At this time, the state information transmitted by the end portion 3232 can be transmitted to the interface 33 through the second electric connection structure 34, and then transmitted to other devices connected to the interface 33 through the interface 33. The devices connected to the interface 33 can also transmit electric energy and electric signals to the end portion 3232 through the interface 33 and the second electric connection structure 34.

[0159] The second electric connection structure 34 is accommodated in the box body 31. The second electric connection structure 34 can be directly connected to the box body 31 or indirectly connected to the box body 31 through other structures. In the case where the second electric connection structure 34 is directly connected to the box body 31, the second electric connection structure 34 can be fixedly connected to the box body 31 by welding, bonding or other means, or can be detachably connected to the box body 31 by screwing, clamping or other means.

[0160] The end of the second electric connection structure 34 connected to the interface 33 can be connected by welding, bonding, screwing or other means. The end of the second electric connection structure 34 connected to the end portion 3232 can also be connected by welding, bonding, screwing or other means.

[0161] For example, the second electric connection structure 34 is a copper bar, the end portion 3232 is connected to the second electric connection structure 34 by screwing, and the interface 33 is connected to the second electric connection structure 34 by welding.

[0162] The embodiment provides some specific structures of the box body 31. The interface 33 is arranged in the box body 31, and the second electric connection structure 34 electrically connected to the interface 33 is arranged. The end portion 3232 is electrically connected to the second electric connection structure 34, so that the state information collected by the sampling assembly 32 can be transmitted to other structures connected to the power distribution device 30 through the second electric connection structure 34 and the interface 33.

[0163] Reference Figure 4 , Figure 5 In some embodiments, the sampling structure 322 includes a temperature sampling structure. The first electric connection structure 323 has two, and the two first electric connection structures 323 are respectively connected to different sides of the sampling structure 322.

[0164] The sampling structure 322 includes a temperature sampling structure, i.e., the state information of the connected other structure collected by the sampling structure 322 is temperature information. The temperature sampling structure can include a thermistor, an infrared temperature sensor or other structures. For example, the sampling structure 322 is a negative temperature coefficient thermistor (NTC).

[0165] The first electric connection structure 323 has two, and the two first electric connection structures 323 are connected to different sides of the sampling structure 322, that is, the two first electric connection structures 323 are connected to two poles of the temperature sampling structure, at this time, one first electric connection structure 323 is used to transmit electric energy and electric signal to the sampling structure 322, and the other first electric connection structure 323 is used to transmit the state information collected by the sampling structure 322 to other structures connected thereto, that is, the two first electric connection structures 323 are used as input structure and output structure respectively.

[0166] For example, in the case of the sampling structure 322 being a negative temperature coefficient thermistor (NTC), the temperature change of the other structure connected to the sampling structure 322 will cause the resistance of the sampling structure 322 to change, at this time, the state information collected by the sampling structure 322 is the change information of the voltage or current, and the state information can be transmitted to the other structure or device connected thereto through the first electric connection structure 323.

[0167] The embodiment provides specific structures of some sampling assemblies 32, so that the sampling assemblies 32 can collect temperature information and transmit the temperature information to other structures connected thereto through the first electric connection structure 323.

[0168] Reference Figure 4 In some embodiments, the power distribution device 30 further comprises an intermediate structure 35 arranged on the box body 31, one side of the intermediate structure 35 is connected to the sampling structure 322, and the other side of the intermediate structure 35 is configured to be connected to the device to be measured in the battery device 100.

[0169] The intermediate structure 35 refers to a structure in the power distribution device 30 for connecting to the device to be measured, one side of the intermediate structure 35 is connected to the device to be measured, and the other side of the intermediate structure 35 is connected to the sampling structure 322, so that the sampling structure 322 can indirectly collect the state information of the device to be measured through the intermediate structure 35; the device to be measured can be a relay, a battery cell 20 or other device in the battery device 100; the intermediate structure 35 is connected to the box body 31, and the intermediate structure 35 can be connected to the box body 31 by welding, bonding, screwing or other means; the sampling structure 322 is connected to the intermediate structure 35, and the sampling structure 322 can be connected to the intermediate structure 35 by screwing, clamping or other means; the intermediate structure 35 is connected to the device to be measured, and the intermediate structure 35 can be connected to the device to be measured by welding, bonding, screwing or other means.

[0170] In the case of two or more sampling assemblies 32, the plurality of sampling assemblies 32 can collect different state information of the device to be measured, at this time, the arrangement can reduce the connection position between the sampling assembly 32 and the device to be measured, thereby reducing the assembly difficulty.

[0171] The material of the intermediate structure 35 can include a conductive material, a heat-conductive material or other materials according to the state information collected by the sampling structure 322. For example, the intermediate structure 35 is a copper bar.

[0172] In the embodiment, the intermediate structure 35 is arranged to be connected to the device under test, so that the sampling structure 322 indirectly collects the device under test through the intermediate structure 35, thereby facilitating the arrangement of the position of the sampling assembly 32.

[0173] In some embodiments, the battery device 100 includes a box body 10, a battery cell 20 and a power distribution device 30, and the battery cell 20 and the power distribution device 30 are both accommodated in the box body 10.

[0174] The power distribution device 30 includes a box body 31 and a sampling assembly 32.

[0175] The sampling assembly 32 includes a sampling structure 322 and a first electrical connection structure 323, and the first electrical connection structure 323 has two and is connected to different sides of the sampling structure 322; the sampling assembly 32 further includes an outer shell 321, which is a solid injection molding structure, and part of the sampling structure 322 extends out of the outer shell 321; the first electrical connection structure includes an intermediate part 3231 and an end part 3232, one end of the intermediate part 3231 is connected to the sampling structure 322, the other end of the intermediate part 3231 is connected to the end part 3232, and part of the end part 3232 extends out of the outer shell 321.

[0176] The box body 31 includes an upper box body 31 and a lower box body 31, and the upper box body 31 and the lower box body 31 are buckled to each other and form an accommodation cavity, and part of the sampling assembly 32 is accommodated in the accommodation cavity.

[0177] The upper box body 31 includes a box body body 3111, and a plurality of plate bodies 3112 with different lengths are connected to the box body body 3111, each plate body 3112 is provided with a clamping piece 3113 on the side away from the box body body 3111, and the clamping piece 3113 and the plate body 3112 abut against the outer shell 321.

[0178] The upper box body 31 is further provided with a second electrical connection structure 34 and an interface 33, one end of the second electrical connection structure 34 is electrically connected to the interface 33, and the end part 3232 is connected to the other end of the second electrical connection structure 34.

[0179] The upper box body 31 is further provided with an intermediate structure 35, at least part of the intermediate structure 35 can extend out of the accommodation cavity, and the sampling structure 322 is connected to the intermediate structure 35.

[0180] In a second aspect, the embodiments of the present application also provide a battery device 100, which includes a box body 10, a battery cell 20 and a power distribution device 30. The battery cell 20 is accommodated in the box body 10, and the power distribution device 30 is accommodated in the box body 10.

[0181] The box 10 refers to a structure in the battery device 100 for providing a fixed base for the battery monomer 20, the power distribution device 30 and the like; the box 10 can be cuboid, cylindrical or other shapes.

[0182] The battery monomer 20 refers to the smallest unit of the battery device 100, which can be a cylindrical structure, a prismatic structure, a sheet structure or other shapes; the number of battery monomers 20 can be one, two or more; in the case of multiple battery monomers 20, the multiple battery monomers 20 can be arranged in one or two different directions, and the multiple battery monomers 20 can be connected in series, parallel or mixed.

[0183] In this battery device 100, the assembly efficiency of the power distribution device 30 is high, the installation and disassembly of the sampling assembly 32 are low, and the stability of information transmission is high.

[0184] In the second aspect, the embodiments of the present application also provide a power utilization device comprising the battery device 100 provided by some embodiments of the first aspect.

[0185] In the second aspect, the embodiments of the present application also provide a power utilization device comprising the battery device 100 provided by some embodiments of the first aspect.

[0186] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should be covered in the scope of the claims and the specification of the present application. Especially, as long as there is no structural conflict, each technical feature mentioned in each embodiment can be combined in any way. The present application is not limited to the specific embodiments disclosed in the text, but includes all technical solutions falling within the scope of the claims.

Claims

1. A power distribution device, characterized by, The power distribution device comprises: a box body; a sampling assembly, at least a part of which is accommodated in the box body; the sampling assembly comprises a shell connected to the box body, a sampling structure and a first electrical connection structure are arranged in the shell, at least a part of the sampling structure extends out of the shell, the sampling structure is configured to collect state information of a device to be tested, one end of the first electrical connection structure is electrically connected to the sampling structure, the other end of the first electrical connection structure extends out of the shell, and the first electrical connection structure is configured to transmit the state information collected by the sampling structure.

2. The power distribution device of claim 1, wherein, The shell is a solid structure, the shell covers part of the first electrical connection structure, and the shell covers part of the sampling structure.

3. The power distribution device of claim 1, wherein, A hole structure is arranged on the shell, and at least a part of the sampling structure is arranged adjacent to the hole structure.

4. The power distribution device of claim 2, wherein, The shell is an injection molded structure.

5. The power distribution device of any one of claims 1-4, wherein, The power distribution device further comprises a box body, and at least a part of the sampling assembly is accommodated in the box body; the shell is detachably connected to the box body.

6. The power distribution device of claim 5, wherein, The box body comprises a first box body and a second box body, the first box body is buckled to the second box body and forms an accommodation cavity, and the shell is accommodated in the accommodation cavity; the shell is detachably connected to the first box body.

7. The power distribution device of claim 6, wherein, The first box body comprises a box body and at least two plates, the plates are arranged on one side of the box body body facing the second box body, and the plates are used for abutting against the shell; a clamping piece is arranged on the side of the plate away from the box body body, and the clamping piece is used for pressing and holding the shell to the box body body.

8. The power distribution device of any one of claims 1-4, wherein, The shell and the box body are integrally formed structure.

9. The power distribution device of any one of claims 1-4, wherein, The first electrical connection structure is a hard structure.

10. The power distribution device of claim 9, wherein, The first electrical connection structure comprises an intermediate part and an end part, one end of the intermediate part is connected to the sampling structure, and the other end of the intermediate part is connected to the end part; at least a part of the end part and at least a part of the sampling structure extend out of the shell from different sides of the shell, respectively.

11. The power distribution device of claim 10, wherein, In a direction perpendicular to the transmission direction of the state information, the cross-sectional area of the intermediate part is smaller than the cross-sectional area of the end part.

12. The power distribution device of claim 10, wherein, The power distribution device further comprises an interface connected to the box body, and one side of the interface facing the inside of the box body is electrically connected with a second electrical connection structure; the end part is electrically connected to the second electrical connection structure.

13. The power distribution device of any one of claims 1-4, wherein, The sampling structure comprises a temperature sampling structure; there are two first electrical connection structures, and the two first electrical connection structures are respectively connected to different sides of the sampling structure.

14. The power distribution device of any one of claims 1-4, wherein, The power distribution device further comprises an intermediate structure arranged on the box body, one side of the intermediate structure is connected to the sampling structure, and the other side of the intermediate structure is configured to be connected to the device to be tested.

15. A battery device characterized by comprising: The power distribution device comprises: a box body; a battery cell accommodated in the box body; and the power distribution device according to any one of claims 1-14 is accommodated in the box body. The battery device comprises the battery device according to claim 15.

16. An electrical device, comprising: ​

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