Battery device, energy storage device, energy storage system, electric device, and charging network

Abstract

The present application provides a battery device, an energy storage device, an energy storage system, an electric device, and a charging network. A sampling assembly of the battery device comprises: sampling elements, a sampling circuit board and adapters; a plurality of sampling lines are arranged on the sampling circuit board at intervals; each adapter comprises a first connecting part and a second connecting part; the first connecting parts are electrically connected to the sampling elements; the second connecting parts are provided with a plurality of electrical connecting areas electrically connected to the first connecting parts; and the plurality of electrical connecting areas are in one-to-one correspondence with the plurality of sampling lines. By providing a plurality of electrical connecting areas, a same adapter can be adaptively connected to a plurality of sampling lines at different positions, allowing a same sampling circuit board to achieve electrical connection with a plurality of different sampling elements by means of a plurality of same adapters. Therefore, the types of adapters are reduced, the universality of the adapters is improved, the probability of misconnection of sampling elements and sampling lines is reduced, and the sampling accuracy is improved, thereby improving the overall performance of the battery device.

Description

Battery devices, energy storage devices, energy storage systems, electrical devices and charging networks Technical Field

[0001] This application belongs to the field of battery technology, and more specifically, relates to a battery device, energy storage device, energy storage system, power consumption device and charging network. Background Technology

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

[0003] In practical applications, it is necessary to sample critical parameters of the battery, such as temperature, voltage, and current, which directly affect battery stability and charging / discharging strategies. The sampled signals are then transmitted to the Battery Management System (BMS) to enable real-time monitoring of these parameters, providing a reference for the BMS's control strategies. Therefore, improving the sampling stability and reliability of various parameters such as temperature, voltage, and current within the battery is a long-term technical challenge in battery technology.

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

[0005] The purpose of this application is to provide a battery device, energy storage device, energy storage system, power consumption device, and charging network to improve the problem of insufficient stability and reliability of battery sampling in related technologies.

[0006] In a first aspect, embodiments of this application provide a battery device, including a housing and a battery cell assembly disposed within the housing. The battery device further includes a sampling component, which includes:

[0007] The sampling element is located inside the enclosure and is used to sample the target structure;

[0008] The sampling circuit board has multiple sampling lines spaced out.

[0009] The adapter includes a first connecting part and a second connecting part. The first connecting part is used for electrical connection with a sampling element, and the second connecting part is connected to the first connecting part. The second connecting part is provided with multiple electrical connection areas that are electrically connected to the first connecting part, and each of the multiple electrical connection areas corresponds one-to-one with multiple sampling lines.

[0010] At least one of the multiple electrical connection areas can be electrically connected to the corresponding sampling line to electrically connect the corresponding sampling element and sampling line. The multiple sampling elements can be electrically connected to the corresponding sampling line through multiple identical adapters.

[0011] The battery device of this application embodiment includes a sampling component comprising a sampling element, a sampling circuit board, and an adapter. The sampling element is used to sample target structures within the battery device, such as battery cell components. The sampling circuit board has multiple sampling lines for electrical connection with the battery management system to transmit the sampling signals collected by the sampling element to the battery management system. The adapter includes a first connection portion and a second connection portion. The first connection portion is used for electrical connection with the sampling element, and the second connection portion has multiple electrical connection areas that are electrically connected to the first connection portion. The multiple electrical connection areas correspond one-to-one with the multiple sampling lines on the sampling circuit board, thereby enabling the sampling element to connect to the corresponding sampling lines through the adapter to transmit the sampling signals to the battery management system. Based on this, multiple sampling lines are spaced out on the sampling circuit board. The same adapter corresponds one-to-one with multiple different sampling lines through multiple different electrical connection areas. In actual use, sampling lines at different locations are selectively connected to their corresponding electrical connection areas. This allows different sampling elements and their corresponding sampling lines to be electrically connected via the adapter. By setting multiple electrical connection areas, the same adapter can be adapted to connect to multiple sampling lines at different locations, enabling the same sampling circuit board to be electrically connected to multiple different sampling elements through multiple identical adapters. This improves the versatility of the adapter, reduces the number of adapter types, and simplifies the connection process by allowing operators to select the corresponding electrical connection area when connecting to the sampling line, thus improving the production efficiency of the battery device. Furthermore, the increased versatility of the adapter reduces the probability of incorrect connection between sampling elements and sampling lines due to adapter confusion, improving the accuracy, stability, and reliability of sampling, and ultimately enhancing the overall performance of the battery device.

[0012] In some embodiments, multiple sampling lines are spaced apart along a first direction, the sampling elements include multiple first sampling elements and multiple second sampling elements, the adapter includes multiple first adapters and multiple second adapters, the length of the first adapter along the first direction is different from the length of the second adapter along the first direction, the multiple first sampling elements are connected to the multiple first adapters in a one-to-one correspondence, and the multiple second sampling elements are connected to the multiple second adapters in a one-to-one correspondence.

[0013] By adopting the technical solution of this embodiment, by setting multiple first adapters and second adapters with different lengths along the layout direction of the sampling line, different numbers of electrical connection areas can be set on each first adapter and each second adapter to correspond one-to-one with multiple sampling lines, so that the same sampling circuit board can be connected one-to-one with multiple first sampling elements through multiple first adapters, and connected one-to-one with multiple second sampling elements through multiple second adapters.

[0014] In some embodiments, multiple sampling lines are spaced apart along a first direction, and multiple electrical connection areas are spaced apart along the first direction.

[0015] By adopting the technical solution of this embodiment, multiple sampling lines are arranged at intervals along the first direction, and correspondingly, multiple electrical connection areas are arranged at intervals along the first direction. In this way, the sampling lines are arranged according to a certain arrangement rule, so that the electrical connection areas are also arranged according to a certain rule. Compared with the messy arrangement method, the structure of the adapter is simplified. The adapter provides a second connecting part extending along the first direction to meet the requirement of one-to-one correspondence between the electrical connection areas and the sampling lines. The structure of the adapter is relatively simple, the molding method is simple, the correspondence between the electrical connection areas and the sampling lines is clearer, and the connection operation is more convenient.

[0016] In some embodiments, adjacent electrical connection areas are arranged alternately along a first direction.

[0017] By adopting the technical solution of this embodiment, two adjacent electrical connection areas are staggered along the first direction. When two adjacent electrical connection areas are simultaneously electrically connected to the corresponding two adjacent sampling lines, the risk of short circuit can be reduced and the stability and reliability of sampling can be improved.

[0018] In some embodiments, the second connecting portion includes:

[0019] The main body is connected to the first connecting part and extends along a first direction;

[0020] Multiple connecting sub-parts are provided, with one end connected to the main body and the other end facing away from the main body along a second direction. The multiple connecting sub-parts are arranged at intervals along a first direction. An electrical connection area is provided in the connecting sub-parts. The second direction is parallel to the extension direction of the sampling line.

[0021] By adopting the technical solution of this embodiment, multiple connecting sub-parts are provided in the second connecting part. The multiple connecting sub-parts are spaced apart along the first direction and are electrically connected to the first connecting part through the main body. The electrical connection area is provided in each connecting sub-part. In this way, the electrical connection areas provided in different connecting sub-parts are spaced apart along the first direction. When the electrical connection areas provided in different connecting sub-parts are simultaneously electrically connected to the corresponding sampling lines, the risk of short circuit can be reduced, thereby improving the stability and reliability of sampling.

[0022] In some embodiments, each connecting sub-part is provided with an electrical connection area.

[0023] By adopting the technical solution of this embodiment, one electrical connection area is provided for each connection sub-part, that is, one connection sub-part corresponds to one sampling line, so that multiple electrical connection areas are spaced apart along the first direction. When any two adjacent electrical connection areas are connected to the corresponding two adjacent sampling lines, their connection points are spaced apart along the first direction, thereby reducing the short circuit risk when two adjacent sampling lines are connected to two adjacent electrical connection areas.

[0024] In some embodiments, the lengths of two adjacent connecting sub-parts are not equal along the second direction, and the electrical connection area is disposed at the end of the connecting sub-part away from the main body.

[0025] By adopting the technical solution of this embodiment, the protrusion length of the connecting sub-parts from the main body is set to be unequal, and the electrical connection area is set at the end of the connecting sub-parts away from the main body, so that two adjacent electrical connection areas are staggered along the first direction.

[0026] In some embodiments, the second connection portion includes a first branch and a second branch that are electrically connected to the first connection portion. The second branch and the first branch are spaced apart along a direction intersecting the first direction. The electrical connection area includes a plurality of first areas and a plurality of second areas. The plurality of first areas are spaced apart on the first branch, and the plurality of second areas are spaced apart on the second branch. In two adjacent sampling lines, one corresponds to the first area and the other corresponds to the second area.

[0027] By adopting the technical solution of this embodiment, the second connection part is divided into a first branch and a second branch. Multiple electrical connection areas, i.e., multiple first areas, are set on the first branch, and multiple electrical connection areas, i.e., multiple second areas, are set on the second branch. By arranging the first branch and the second branch at intervals, the multiple electrical connection areas set on the first branch and the multiple electrical connection areas set on the second branch are spaced apart from each other. When it is necessary to connect two adjacent sampling lines to the corresponding two electrical connection areas, one sampling line can be connected to a first area, and the other sampling line can be connected to a second area. In this way, the spacing distance between the two adjacent electrical connection areas (i.e., the adjacent first area and the second area) corresponding to the two adjacent sampling lines is increased, thereby further reducing the short circuit risk when two adjacent sampling lines are connected to the corresponding two adjacent electrical connection areas.

[0028] In some embodiments, adjacent first and second zones are arranged alternately along a direction perpendicular to the first direction.

[0029] By adopting the technical solution of this embodiment, the electrical connection areas corresponding to the two adjacent sampling lines are respectively set in the first branch and the second branch, so that the two adjacent electrical connection areas, namely the adjacent first area and the second area, are staggered in the direction perpendicular to the first direction, and the spacing between the two adjacent electrical connection areas (i.e. the adjacent first area and the second area) is increased, thereby further reducing the short circuit risk when the two adjacent sampling lines are connected to the corresponding two adjacent electrical connection areas.

[0030] In some embodiments, the number of first regions is at least one-fifth of the number of sampling lines, and / or the number of second regions is at least one-fifth of the number of sampling lines.

[0031] By adopting the technical solution of this embodiment, the number of electrical connection areas set in either the first branch or the second branch is at least one-fifth of the number of sampling lines, thereby reducing the types of adapters and enabling the same sampling circuit board to achieve electrical connection with multiple different sampling elements through multiple identical adapters, so that the adapters have better versatility and thus reduce the types of adapters required.

[0032] In some embodiments, each sampling line has a straight line segment extending along a first direction, and multiple straight line segments are arranged parallel to each other along the first direction.

[0033] By adopting the technical solution of this embodiment, multiple sampling lines are set as straight lines at at least one section, and multiple straight line segments are evenly spaced along the first direction. The layout of the sampling lines is more regular, and the layout of the sampling lines on the sampling circuit board is clearer. Correspondingly, the electrical connection area on the adapter can also be set more regularly, which simplifies the structure of the adapter. At the same time, the correspondence between each electrical connection area of ​​the adapter and multiple sampling lines is more intuitive and clear, which helps to simplify the connection operation between each electrical connection area on the adapter and the corresponding sampling line on the sampling circuit board.

[0034] In some embodiments, multiple straight segments are sequentially arranged along a first direction starting from one side of the sampling circuit board, and along the first direction, the length of the second connection portion is greater than or equal to half the length of the sampling circuit board.

[0035] By adopting the technical solution of this embodiment, multiple straight segments of multiple sampling lines are sequentially arranged along the first direction starting from one side of the sampling circuit board. The multiple straight segments occupy a certain size of the sampling circuit board along the first direction. The second connecting part of the adapter is set to have a length dimension greater than or equal to half the length dimension of the sampling circuit board along the first direction. In this way, the orthographic projection of the second connecting part on the sampling circuit board along the first direction can cover half or more of the sampling lines. On this basis, multiple electrical connection areas are sequentially and spaced along the first direction on the second connecting part, so that the multiple electrical connection areas can be directly aligned with the multiple sampling lines. The adapter structure is simple, and the design and molding process are also relatively simple.

[0036] In some embodiments, the surface of the adapter is covered with a first insulating film, and the first insulating film has a first opening corresponding to the position of each electrical connection area. The first opening is located on the side of the electrical connection area facing the sampling circuit board, and each electrical connection area is exposed relative to the first insulating film through the corresponding first opening.

[0037] By adopting the technical solution of this embodiment, a first insulating film is wrapped around the surface of the adapter. The first insulating film insulates the adapter, reducing the risk of short circuits caused by the adapter coming into contact with surrounding electronic components. At the same time, the first insulating film is provided with a first opening corresponding to the position of each electrical connection area. The first opening faces the sampling circuit board, so that each electrical connection area is exposed through the corresponding first opening and electrically connected to the corresponding sampling line.

[0038] In some embodiments, the adapter has a first surface facing the sampling circuit board and a second surface facing away from the sampling circuit board. The first insulating film includes a first film layer and a second film layer, with the first film layer covering the first surface and the second film layer covering the second surface. A first opening is provided in the first film layer.

[0039] By adopting the technical solution of this embodiment, the first insulating film includes a first film layer and a second film layer. The first film layer provides insulation between the adapter and the sampling circuit board, and the second film layer provides insulation on the second surface of the adapter facing away from the sampling circuit board, i.e., the upper surface. The first opening is provided in the first film layer, so that each electrical connection area is exposed relative to the first film layer and can be connected to the corresponding sampling line.

[0040] In some embodiments, the second film layer has a second opening at the location of each electrical connection region, and each electrical connection region is exposed relative to the second film layer through the second opening.

[0041] By adopting the technical solution of this embodiment, a second opening is provided at the position of each electrical connection area in the second film layer, so that the electrical connection area on the side where the second surface of the adapter is located can also be exposed relative to the second film layer. In this way, it is easier to connect the electrical connection area and the corresponding sampling line.

[0042] In some embodiments, the second connection portion is provided with a third opening at a position between two adjacent electrical connection regions, and the first insulating film is provided with a fourth opening at a position between two adjacent electrical connection regions. The fourth opening penetrates the first film layer and the second film layer through the third opening, and the two adjacent electrical connection regions are separated by the corresponding third opening and fourth opening.

[0043] By adopting the technical solution of this embodiment, a third opening and a fourth opening are provided between two adjacent electrical connection areas, so that the two adjacent electrical connection areas are not connected through the first insulating film. That is, the two adjacent electrical connection areas are not connected through the first insulating film in the path. In this way, when condensate drips onto the first insulating film, the condensate can flow into the third opening, thereby cutting off the path of condensate connecting the two adjacent electrical connection areas and reducing the risk of short circuit caused by the adapter contacting condensate.

[0044] In some embodiments, the surface of the adapter is covered with a first insulating film, the first insulating film including a first film layer and a second film layer, the adapter having a first surface facing the sampling circuit board and a second surface facing away from the sampling circuit board, the first film layer covering the first surface and the second film layer covering the second surface;

[0045] The first film layer has a first opening corresponding to each electrical connection area, and the second film layer has a second opening corresponding to each electrical connection area. Each electrical connection area is exposed relative to the first insulating film through the corresponding first and second openings.

[0046] The first insulating film is provided with a fifth opening at the position between the first segment and the second segment. The fifth opening penetrates the first film layer and the second film layer, and separates the two adjacent first regions and second regions.

[0047] By adopting the technical solution of this embodiment, a first insulating film is covered on the surface of the adapter. The first insulating film includes a first film layer and a second film layer. The first film layer insulates between the adapter and the sampling circuit board, and the second film layer insulates the second surface of the adapter facing away from the sampling circuit board, i.e., the upper surface. The first film layer has a first opening at the position of each electrical connection area, so that each electrical connection area is exposed relative to the first film layer and can be connected to the corresponding sampling line. The second film layer has a second opening at the position of each electrical connection area, so that when connecting the electrical connection area and the corresponding sampling line, the operation can be performed directly at the second opening. At the same time, a fifth opening is provided between the first branch and the second branch to separate the first area located in the first branch and the second area located in the second branch. In this way, two adjacent electrical connection areas located in the first branch and the second branch are not connected through the first insulating film in the path. Thus, when condensate drips onto the first insulating film, the condensate can flow into the fifth opening, thereby cutting off the path of condensate connecting the two adjacent electrical connection areas and reducing the risk of short circuit of the adapter due to contact with condensate.

[0048] In some embodiments, the fifth opening is a strip-shaped elongated hole. Along the first direction, the fifth opening extends from one end of the second connection to the opposite end, and a plurality of first regions and a plurality of second regions are disposed on opposite sides of the fifth opening.

[0049] By adopting the technical solution of this embodiment, a strip-shaped elongated hole is provided between the first branch and the second branch. The multiple first areas on the first branch and the multiple second areas on the second branch are respectively located on opposite sides of the strip-shaped elongated hole. This strip-shaped elongated hole is the fifth opening that separates two adjacent electrical connection areas. In this way, multiple first areas and multiple second areas are separated by a strip-shaped elongated hole. Compared with providing multiple fifth openings, providing a strip-shaped elongated hole simplifies the structure of the adapter. At the same time, the space of the strip-shaped elongated hole is relatively increased, and the volume of condensate that can be accommodated is increased, further reducing the probability of the two electrical connection areas being connected by falling condensate.

[0050] In some embodiments, a first insulating film is attached to the surface of the adapter.

[0051] In some embodiments, the adapter further includes an adapter portion, through which the first connecting portion is connected to the second connecting portion.

[0052] By adopting the technical solution of this embodiment, an adapter is set to connect the first connecting part and the second connecting part. By designing the size of the adapter, the adapter can have different lengths to adapt to the sampling requirements of different positions.

[0053] In some embodiments, a first connecting portion is connected to one end of the adapter portion, a second connecting portion is connected to the opposite end of the adapter portion, and at least the middle portion of the adapter portion is a flexible portion.

[0054] By adopting the technical solution of this embodiment, the adapter has a flexible part that can deform under force. On the one hand, this allows the adapter itself to resist certain external impacts. On the other hand, when the target position of the sampling element changes relative to the sampling circuit board due to external force, the flexible adapter can make adaptive position adjustments through deformation, so that the first connection part and the sampling element can always maintain a reliable connection, thus ensuring stable sampling.

[0055] In some embodiments, the transition portion is a flexible bending portion.

[0056] By adopting the technical solution of this embodiment, a flexible bending part is provided in the adapter. The bending part can be compressed to bend, and it can also be stretched to deform. When compressed, it can shorten the gap between the first connecting part and the second connecting part of the adapter. When stretched, it can lengthen the gap, so that the adapter can adapt to the large positional change requirements of the sampling element and make the adapter more versatile.

[0057] In some embodiments, the adapter is a flexible conductive wire.

[0058] In some embodiments, the sampling element is mounted on the first connection portion.

[0059] By adopting the technical solution of this embodiment, the sampling element is installed on the first connecting part, that is, the sampling element is directly installed on the adapter. The sampling element and the adapter are assembled and disassembled as a whole, which can eliminate the operation of connecting the adapter and the sampling element, thereby simplifying the connection operation of the sampling assembly and improving the assembly efficiency.

[0060] In some embodiments, the first connecting portion is provided with a mounting member for connecting to the target structure, the mounting member having a mounting groove, and the sampling element being installed in the mounting groove.

[0061] By adopting the technical solution of this embodiment, an installation component is provided in the first connection part, and the sampling element is installed in the installation groove of the installation component. When in use, the installation component can be connected to the target structure. The connection structure of the sampling element is simple and the disassembly and assembly operations are convenient.

[0062] In some embodiments, the mounting component further includes a seal that at least seals the opening of the mounting groove.

[0063] By adopting the technical solution of this embodiment, a sealing element is provided in the mounting groove. The sealing element at least seals the opening of the mounting groove. The sealing element can protect the internal sampling element, reduce the influence of the environment outside the mounting groove on the sampling element, and ensure the accurate sampling of the sampling element.

[0064] In some embodiments, the sampling element is a temperature sensor and the seal is a thermally conductive element.

[0065] By adopting the technical solution of this embodiment, when the sampling element is a temperature sensor, a heat-conducting component is used for the sealing component, which can conduct heat in a timely manner and reduce the adverse effects of the sealing component on the thermal sensing of the temperature sensor.

[0066] In some embodiments, the sampling line includes a conductive core and a second insulating film. The surface of the core facing the second connection portion is covered with the second insulating film. The second insulating film has a sixth opening at the position corresponding to the electrical connection area. The position of the core corresponding to the electrical connection area is exposed relative to the second insulating film through the sixth opening.

[0067] By adopting the technical solution of this embodiment, the sampling line includes a conductive wire core and a second insulating film. The second insulating film insulates the surface of the wire core facing the adapter. By setting multiple sixth openings in a localized area of ​​the second insulating film, each of the multiple sixth openings corresponds one-to-one with multiple wire cores, so that each wire core can only be electrically connected to the corresponding electrical connection area through its own sixth opening, while other positions are covered by the second insulating film. This reduces the risk of the wire core contacting other surrounding electronic components and affecting the normal and stable transmission of the sampling signal.

[0068] In some embodiments, the electrical connection area is soldered to the wire core at the sixth opening.

[0069] In some embodiments, the electrical connection area is provided with a through structure for solder to pass through, extending from one side surface of the electrical connection area toward the sampling line to the opposite side surface, the through structure extending through the electrical connection area.

[0070] By adopting the technical solution of this embodiment, a through structure is set in the electrical connection area. When welding the electrical connection area and the sampling line, the solder can climb up the surface of the electrical connection area away from the sampling circuit board, i.e., the upper surface of the second connection part, through the through structure. The through structure increases the amount of solder climbing on the one hand, and the solder flowing out from the opening of the through structure can form a cap-like structure on the upper surface of the second connection part after solidification, thereby increasing the connection force between the electrical connection area and the sampling line, and further improving the stability and reliability of the welding.

[0071] In some embodiments, the through structure includes a through hole that passes through an electrical connection area;

[0072] And / or, the through structure includes a countersunk hole and a through hole, the countersunk hole being located on the side of the electrical connection area away from the sampling line, and the through hole penetrating the countersunk hole and the surface of the electrical connection area facing the sampling line;

[0073] And / or, the through structure includes a notch located on the side of the electrical connection area.

[0074] In some embodiments, the electrical connection area and the wire core are crimped together at the sixth opening.

[0075] By adopting the technical solution of this embodiment, there can be a certain contact pressure between the electrical connection area and the core of the corresponding sampling line, so that a tight press-fit electrical contact is formed between the electrical connection area and the core, thereby further improving the reliability and stability of the electrical connection between the two.

[0076] In some embodiments, the sampling circuit board includes a base layer, a wire core disposed on one side surface of the base layer, and a second insulating film cover attached to the surface of the base layer on which the sampling wire is disposed.

[0077] In some embodiments, the sampling assembly further includes a third insulating film attached to the sampling circuit board, a second connection portion sandwiched between the sampling circuit board and the third insulating film, and the third insulating film at least covering the second connection portion.

[0078] By adopting the technical solution of this embodiment, a third insulating film is attached to the sampling circuit board. The third insulating film covers the second connection part and cooperates with the sampling circuit board to clamp the second connection part. The third insulating film can not only provide insulation protection for the second connection part, but also exert a certain squeezing force on the second connection part, thereby improving the connection reliability and stability of the electrical connection between the electrical connection area and the corresponding sampling line electrical connection position.

[0079] Secondly, embodiments of this application provide a battery device including a plurality of battery cells as described in the above embodiments.

[0080] Thirdly, embodiments of this application provide an energy storage device, including a battery device as described in the above embodiments, the battery device being used to store or provide electrical energy.

[0081] Fourthly, embodiments of this application provide an energy storage system, including a power conversion device and an energy storage device as described in the above embodiments, wherein the power conversion device is electrically connected between the power generation device and the energy storage device.

[0082] Fifthly, embodiments of this application provide an electrical device, including a battery device as described in the above embodiments, an energy storage device as described in the above embodiments, or an energy storage system as described in the above embodiments, wherein the battery device is used to store or provide electrical energy.

[0083] Sixthly, embodiments of this application provide a charging network, including a charging pile and an energy storage device or an energy storage system as described in the above embodiments, wherein the energy storage device is used to provide electrical energy to the charging pile.

[0084] 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

[0085] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or exemplary technologies will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0086] Figure 1 is a schematic diagram of the vehicle structure according to some embodiments of this application;

[0087] Figure 2 is a schematic diagram of the structure of a charging network according to some embodiments of this application;

[0088] Figure 3 is a schematic diagram of the structure of an energy storage system according to some embodiments of this application;

[0089] Figure 4 is a schematic diagram of the structure of an energy storage device according to some embodiments of this application;

[0090] Figure 5 is an exploded structural diagram of a battery device according to some embodiments of this application;

[0091] Figure 6 is a partial structural schematic diagram of a sampling component provided in an embodiment of this application;

[0092] Figure 7 is an exploded view of the sampling component shown in Figure 6;

[0093] Figure 8 is a partial structural schematic diagram of an adapter provided in one embodiment;

[0094] Figure 9 is a partial structural schematic diagram of the adapter provided in another embodiment;

[0095] Figure 10 is a partial structural schematic diagram of the adapter provided in another embodiment;

[0096] Figure 11 is a schematic diagram of the adapter with the partial structure shown in Figure 8;

[0097] Figure 12 is a schematic diagram of the adapter with the partial structure shown in Figure 9;

[0098] Figure 13 is a schematic diagram of the adapter with the partial structure shown in Figure 10;

[0099] Figure 14 is a schematic diagram of the structure of the first insulating film of the adapter provided in Figure 11;

[0100] Figure 15 is a schematic diagram of the structure of the first insulating film of the adapter provided in Figure 12;

[0101] Figure 16 is a schematic diagram of the structure of the first insulating film of the adapter provided in Figure 13;

[0102] Figure 17 is a partial structural schematic diagram of the adapter provided in another embodiment;

[0103] Figure 18 is a structural schematic diagram of the adapter with the partial structure shown in Figure 17;

[0104] Figure 19 is a schematic diagram of the structure of the first insulating film of the adapter provided in Figure 18;

[0105] Figure 20 is a structural schematic diagram of the adapter provided in another embodiment;

[0106] Figure 21 is an exploded view of the structure of the adapter shown in Figure 20 when the sampling element is installed;

[0107] Figure 22 is an exploded view of a partial internal structure of the battery device;

[0108] Figure 23 is a cross-sectional view of the sampling element being installed on the target structure using the adapter shown in Figure 20.

[0109] The main labels in the attached figures are as follows: 100, Vehicle; 101, Controller; 102, Motor; 200, Battery Unit; 300, Charging Network; 301, Charging Pile; 302, Connector; 400, Energy Storage System; 401, Power Conversion Device; 402, Power Generation Device; 403, Energy Storage Device; 404, Cabinet; 10, Box; 1001, Storage Space; 11, Top Cover; 12, Base Plate; 14, Target Structure; 141, Slot; 20, Battery Cell Assembly; 30, Battery Management System; 40, Sampling Assembly; 41, Sampling Element; 41a, First Sampling Element; 41b, Second Sampling Element; 42, Sampling Circuit Board; 421. Sampling line; 4211, Straight segment; 4212, Second insulating film; 4213, Wire core; 43, Adapter; 43a, First adapter; 43b, Second adapter; 431, First connecting part; 4311, Mounting position; 4312, Mounting component; 4313, Mounting groove; 4314, Sealing element; 432, Second connecting part; 4321, Main body; 4322, Connecting sub-part; 4323, First branch; 4324, ... Two sections; 4325, third opening; 433, electrical connection area; 4331, first area; 4332, second area; 4333, through structure; 434, first insulating film; 4341, first opening; 4342, first film layer; 4343, second film layer; 4344, second opening; 4345, fourth opening; 4346, fifth opening; 435, transition part; 4351, flexible bending part; 436, third insulating film. Detailed Implementation

[0110] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with Figures 1 to 23 and the embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0111] 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.

[0112] In the description of the embodiments of this application, technical terms such as "first" and "second" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature.

[0113] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments in any suitable manner.

[0114] Unless otherwise specified, all embodiments and optional embodiments of this application can be combined to form new technical solutions.

[0115] Unless otherwise specified, all technical features and optional technical features of this application may be combined to form new technical solutions.

[0116] 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.

[0117] In the description of the embodiments of this application, the term "multiple" refers to two or more (including two), similarly, "multiple sets" refers to two or more (including two sets), and "multiple pieces" refers to two or more (including two pieces). "Several" means one or more, unless otherwise explicitly specified.

[0118] In the description of the embodiments of this application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0119] In the description of the embodiments of this application, unless otherwise expressly specified and limited, the technical terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0120] In the description of the embodiments of this application, unless otherwise expressly specified and limited, when an element is referred to as "fixed to" or "set on" another element, it may be directly on or indirectly on the other element. When an element is referred to as "connected to" another element, it may be directly connected to or indirectly connected to the other element.

[0121] In the description of the embodiments of this application, unless otherwise expressly specified and limited, the technical term "proximity" refers to being close in location. For example, among three components A1, A2, and B, if the distance between A1 and B is greater than the distance between A2 and B, then A2 is closer to B than A1; that is, A2 is adjacent to B, or B is adjacent to A2. Similarly, when there are multiple components C, namely C1, C2, ... CN, if one component C, such as C2, is closer to component B than the other components C, then B is adjacent to C2, or C2 is adjacent to B.

[0122] Energy conservation and emission reduction are key to the sustainable development of the automotive industry, and electric vehicles, due to their energy-saving and environmentally friendly advantages, have become an important component of this sustainable development. For electric vehicles, battery technology is a crucial factor in their development. Battery reliability is an issue that cannot be ignored during the manufacturing process. Therefore, improving battery reliability is a pressing technical problem that needs to be solved in battery technology.

[0123] A battery typically includes a housing, multiple individual battery cells housed within the housing, and an integrated busbar assembly (Cells Contact System, CCS). The integrated busbar assembly integrates components such as the isolation board and control circuitry (voltage and temperature acquisition) into a single module. It enables series and parallel connections between multiple battery cells, and provides functions such as temperature and voltage sampling, and overcurrent protection. The integrated busbar assembly provides temperature and voltage information to the battery management system (BMS) through its circuit board structure and connector assemblies. For example, the integrated busbar assembly includes a sampling circuit board with several sampling lines. These sampling lines are electrically connected to sampling elements used to collect various types of information, such as temperature, voltage, or current, to collect the information gathered by each sampling element. The sampling circuit board is also electrically connected to the BMS, thereby transmitting the collected sampling information to the BMS.

[0124] In related technologies, a sampling circuit board is provided with multiple sampling lines, which are arranged in a certain layout. Each sampling element inside the battery, such as a temperature sensor, needs to be connected to the corresponding sampling line to transmit sampling signals. One sampling line corresponds to one sampling element, or one sampling line corresponds to one electrical connection terminal of a sampling element. For example, when performing temperature sampling, one sampling line on the sampling circuit board needs to be connected to the positive pin of the temperature sensor, and another sampling line needs to be connected to the negative pin of the temperature sensor. Thus, due to the large number of sampling lines on the sampling circuit board, different types of adapters are needed to connect the sampling element to the sampling lines at different locations to meet the connection requirements of the sampling lines at different locations. This results in a wide variety of adapters with different structures, shapes, and sizes, making the adapter manufacturing process complex and difficult to mass-produce. Furthermore, due to the variety and poor versatility of the adapters, when connecting them to the sampling lines, operators need to strictly select the adapters that meet the connection requirements according to the design specifications. This connection operation is time-consuming and inefficient, making it difficult to effectively improve battery production efficiency. In addition, due to the wide variety of adapters, there is a possibility of incorrect connection between the sampling element and the sampling line due to confusion in the use of adapters, which affects the accuracy, stability, and reliability of sampling, leading to a decline in the overall performance of the battery.

[0125] Based on this, this application provides a battery device whose sampling component includes a sampling element, a sampling circuit board, and an adapter. The sampling element is used to sample the target structure of the battery device, such as a battery cell assembly. The sampling circuit board has multiple sampling lines, which are used to electrically connect to the battery management system to transmit the sampling signals collected by the sampling element to the battery management system. The adapter includes a first connection part and a second connection part. The first connection part is used to electrically connect to the sampling element, and the second connection part has multiple electrical connection areas that are electrically connected to the first connection part. The multiple electrical connection areas are connected one-to-one with the multiple sampling lines on the sampling circuit board, so that the sampling element can be connected to the corresponding sampling lines through the adapter to transmit the sampling signals to the battery management system. Based on this, multiple sampling lines are spaced out on the sampling circuit board. The same adapter corresponds to multiple different sampling lines through multiple different electrical connection areas. In actual use, sampling lines at different locations are selectively connected to their corresponding electrical connection areas. This allows different sampling elements and their corresponding sampling lines to be electrically connected via the adapter. By setting multiple electrical connection areas, the same adapter can be adapted to connect to multiple sampling lines at different locations, enabling the same sampling circuit board to be electrically connected to multiple different sampling elements through multiple identical adapters. This improves the versatility of the adapter, reduces the number of adapter types, and simplifies the connection process by allowing operators to select the corresponding electrical connection area when connecting to the sampling line, thus improving the production efficiency of the battery device. Furthermore, the increased versatility of the adapter reduces the probability of incorrect connection between sampling elements and sampling lines due to adapter confusion, improving the accuracy, stability, and reliability of sampling, and ultimately enhancing the overall performance of the battery device.

[0126] In this embodiment of the application, the battery cell can be a secondary battery, which refers to a battery cell that can be recharged to activate the active materials and continue to be used after the battery cell has been discharged.

[0127] The battery cell can be a lithium-ion battery, sodium-ion battery, sodium-lithium-ion battery, lithium metal battery, sodium metal battery, lithium-sulfur battery, magnesium-ion battery, nickel-metal hydride battery, nickel-cadmium battery, lead-acid battery, etc., and the embodiments of this application are not limited to this.

[0128] The technical solutions described in the embodiments of this application are applicable to various electrical devices that use individual battery cells, such as mobile phones, portable devices, laptops, electric vehicles, electric toys, power tools, vehicles, ships, and spacecraft. For example, spacecraft include airplanes, rockets, space shuttles, and spacecraft.

[0129] For ease of explanation, an electrical device is provided in one embodiment of this application, with a vehicle as an example.

[0130] Please refer to Figure 1, which is a structural schematic diagram of a vehicle 100 provided in some embodiments of this application. The vehicle 100 can be a gasoline-powered vehicle, a natural gas-powered vehicle, or a new energy vehicle. New energy vehicles can be pure electric vehicles, hybrid electric vehicles, or range-extended electric vehicles, etc. A battery device 200 is provided inside the vehicle 100, and the battery device 200 can be located at the bottom, front, or rear of the vehicle 100. The battery device 200 can be used to power the vehicle 100; for example, the battery device 200 can serve as the operating power source for the vehicle 100. The vehicle 100 may also include a controller 101 and a motor 102. The controller 101 is used to control the battery device 200 to supply power to the motor 102, for example, to meet the power needs of the vehicle 100 during starting, navigation, and driving.

[0131] In some embodiments, the battery device 200 can not only serve as the operating power source for the vehicle 100, but also as the driving power source for the vehicle 100, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 100.

[0132] Referring to Figure 2, this embodiment of the application also provides a charging network 300, including a charging pile 301 and an energy storage device 403. The charging pile 301 is electrically connected to the energy storage device 403, which provides electrical energy to the charging pile 301. The charging pile 301 is electrically connected to a battery device 200 in the energy storage device 403 via a cable, and the battery device 200 can provide its stored electrical energy to the charging pile 301. The charging pile 301 has one or more connectors 302 for connecting to electrical equipment (such as a vehicle 100), thereby enabling the charging equipment to be recharged.

[0133] The energy storage device 403 can be located inside the charging pile 301 (e.g., an integrated energy storage and charging unit) or outside the charging pile 301.

[0134] In some embodiments, the charging network 300 may include a charging pile 301 and an energy storage system 400. The charging pile 301 is electrically connected to the energy storage system 400, which provides electrical energy to the charging pile 301. The charging pile 301 is electrically connected to a battery device 200 in the energy storage system 400 via a cable, and the battery device 200 can provide its stored electrical energy to the charging pile 301.

[0135] Referring to Figure 3, this application provides an energy storage system 400. The energy storage system 400 may include one or more energy storage devices 403 and a power converter system (PCS) 401. The power converter system 401 is connected between a power generation device 402 and an energy storage device 403. The power generation device 402 generates electrical energy, which can be stored in the energy storage device 403 through the power converter system 401. As an example, the power generation device 402 may be a solar panel, a hydroelectric power generation device, a thermal power generation device, a wind power generation device, etc. The specific type of the power generation device 402 is not limited in this application.

[0136] Referring to Figure 4, this embodiment of the application provides an energy storage device 403, including one or more battery clusters to improve the voltage and capacity of the energy storage device 403. The battery cluster may include one or more battery devices 200, and multiple battery devices 200 are connected in series via a busbar to increase the voltage of the energy storage device 403. When the energy storage device 403 includes multiple battery clusters, the multiple battery clusters are connected in parallel to increase the capacity of the energy storage device 403.

[0137] The energy storage device 403 can be used in energy storage power stations, wind power generation systems, solar power generation systems, mobile power systems, or temporary power supply systems, etc. The energy storage device 403 can store electrical energy as needed and output it when appropriate. For example, the energy storage device 403 can store electrical energy during off-peak hours and provide power to relevant users or electrical equipment during peak hours. The energy storage system 400 provided in this application embodiment can be any power system that requires the use of the energy storage device 403.

[0138] In some embodiments, the energy storage device 403 is an energy storage cabinet. Of course, the energy storage device 403 can also be an energy storage container.

[0139] In some embodiments, the energy storage device 403 may include a cabinet 404 and one or more battery clusters housed within the cabinet 404. Alternatively, the energy storage device 403 may also include one or more battery devices 200, which are directly housed within the cabinet 404.

[0140] In some embodiments, the energy storage device 403 may include modules such as a thermal management module, a main control module, a central control module, a power distribution module, and a fire protection module.

[0141] As an example, the thermal management module may include a liquid cooling unit that supplies coolant to each battery device 200 via piping for regulating the temperature of the individual battery cells.

[0142] As an example, the main control module can serve as the battery management unit for the battery cluster, used to monitor and manage the battery cluster. The main control module can monitor information such as the current, voltage, power, or temperature of the battery cluster. For instance, it can control the charging and discharging current and voltage of the battery cluster. The main control module includes modules such as an auxiliary battery management unit (SBMU) and a fusion switch.

[0143] As an example, the central control module can serve as the battery management unit for the energy storage device 403, used to monitor and manage the energy storage device 403. The central control module can monitor information such as the current, voltage, power, state of charge, or temperature of the energy storage device 403. For example, it can control the charging and discharging current and voltage of the energy storage device 403. As an example, the central control module includes modules such as an insulation monitoring module (IMM), a master battery management unit (MBMU), an Ethernet (ETH) module, and a fiber optic conversion module.

[0144] As an example, the fire protection module includes a control panel, detectors, alarm devices, etc., used to detect, alarm, or extinguish fires in the energy storage system 400.

[0145] As an example, the power distribution module can be used to distribute power to the modules in the energy storage device 403 that require power.

[0146] Referring to Figure 5, this application embodiment provides a battery device 200. The battery device 200 may include one or more battery cell assemblies 20 for providing voltage and capacity. The battery cell assembly 20 may include one or more battery cells. When the battery cell assembly 20 includes multiple battery cells, the multiple battery cells are connected in series, parallel, or mixed connection through a busbar.

[0147] In some embodiments, the battery device 200 includes a battery management system (BMS), which is a core component responsible for monitoring and managing the state of individual battery cells. Its main functions include: real-time monitoring of parameters such as voltage, current, and temperature of individual battery cells to ensure that the battery is in a safe operating state; balancing the charge of each battery cell in the battery cell assembly 20 through active or passive means to extend the battery life; controlling and regulating the temperature of individual battery cells to avoid performance degradation or safety risks caused by overheating or overcooling; detecting faults in the battery cell assembly 20 and the BMS itself, and taking corresponding protective measures, such as cutting off power and alarms.

[0148] As an example, the battery management system 30 can be housed in the housing 10 to support and protect the battery management system 30.

[0149] As an example, the battery management system 30 can also be located outside the housing 10 and connected to the battery cells, sensors and other devices inside the housing 10 via wires.

[0150] In some embodiments, the battery cell assembly 20 is typically formed by arranging multiple battery cells.

[0151] As an example, the battery cell assembly 20 can be a battery module, which is formed by arranging and fixing multiple battery cells together to form an independent module. As an example, a battery module can be formed by bundling multiple battery cells together with cable ties.

[0152] In some embodiments, the battery device 200 may be a battery pack, which includes a housing 10 and one or more battery cell assemblies 20, the battery cell assemblies 20 being housed within the housing 10.

[0153] As an example, the battery cell assembly 20 can be a battery module, which can be housed in the housing 10 by fixing the battery module in the housing 10.

[0154] As an example, the battery cell assembly 20 can also be housed in the housing 10 by directly fixing multiple battery cells to the housing 10.

[0155] In some embodiments, the housing 10 has an internal accommodating space 1001 to accommodate individual battery cells. The housing 10 can be made of a material with a certain degree of hardness and strength, so that the housing 10 is not easily deformed when subjected to compression or impact, enabling the battery to have higher structural strength and improved reliability. The housing 10 can be made of various materials, including but not limited to aluminum, stainless steel, aluminum alloy, iron, or plastic.

[0156] In some embodiments, the housing 10 may be part of the chassis structure of the vehicle 100. For example, a portion of the housing 10 may be at least a portion of the floor of the vehicle 100, or a portion of the housing 10 may be at least a portion of the crossbeams and longitudinal beams of the vehicle 100.

[0157] As an example, the housing 10 may include a first part and a second part, which are fastened together to form a closed receiving space 1001 inside the housing 10 to house the battery cell assembly 20. Here, "closed" refers to covering or shutting off; it can be sealed or unsealed. The first part and the second part may be the top cover 11 or the bottom plate 12 of the housing 10, respectively. The first part and the second part may also be hollow structures, each open on one side, with the open side of the first part covering the open side of the second part.

[0158] As an example, the housing 10 may include a top cover 11, a frame, and a bottom plate 12. The top cover 11 and the bottom plate 12 are respectively connected to the frame, so that the interior of the housing 10 forms a closed receiving space 1001 to accommodate the battery cell assembly 20.

[0159] In some embodiments, the battery device 200 is further provided with a sampling component, namely a CCS component. The sampling component includes a sampling circuit board and sampling elements disposed in the battery device 200 for collecting various signals. The sampling circuit board is connected to the BMS of the battery device 200. The sampling elements acquire the operating information of various components in the battery device 200 and send it to the BMS after summarizing it through the sampling circuit board. The BMS analyzes and processes this operating information and then controls various components in the battery to execute corresponding operating strategies in order to maintain the normal and stable operation of the battery.

[0160] As an example, the battery device 200 is equipped with a temperature sampling element. The temperature sampling element is used to acquire temperature information of components such as battery cells and busbars in the battery device 200, and transmit the temperature information to the sampling circuit board of the CCS module. The sampling circuit board sends the acquired temperature information to the BMS, and the BMS formulates thermal management strategies based on the temperature information.

[0161] As an example, the battery device 200 is equipped with a voltage sampling element. The voltage sampling element is used to acquire voltage information of the battery cells of the battery device 200 and transmit the voltage information to the sampling circuit board of the CCS component. The sampling circuit board sends the acquired voltage information to the BMS. The BMS formulates charging and discharging strategies based on the acquired voltage information.

[0162] The battery device of this application will now be described in detail with reference to Figures 5 to 23 and specific embodiments. In the embodiments of this application, the first direction is the direction shown by the bidirectional arrow F1 in the figure, the second direction is the direction shown by the bidirectional arrow F2 in the figure, the width direction of the sampling circuit board is parallel to the first direction, and the length direction of the sampling circuit board is parallel to the second direction.

[0163] Please refer to Figures 5 to 8 and Figure 22. In some embodiments of this application, the battery device 200 includes a housing 10 and a battery cell assembly 20 disposed within the housing 10. The battery device 200 also includes a sampling assembly 40, which includes a sampling element 41, a sampling circuit board 42, and an adapter 43. The sampling element 41 is disposed within the housing 10 and is used to sample the target structure. The sampling circuit board 42 is provided with multiple sampling lines 421 spaced apart. The adapter 43 includes a first connecting portion 431 and a second connecting portion 432. 1 is used for electrical connection with sampling element 41. The second connection part 432 is connected to the first connection part 431. The second connection part 432 is provided with a plurality of electrical connection areas 433 that are electrically connected to the first connection part 431. The plurality of electrical connection areas 433 correspond one-to-one with a plurality of sampling lines 421. At least one of the plurality of electrical connection areas 433 can be electrically connected to the corresponding sampling line 421 to electrically connect the corresponding sampling element 41 and sampling line 421. The plurality of sampling elements 41 can be electrically connected to the corresponding sampling line 421 through a plurality of identical adapters 43.

[0164] In the embodiments of this application, as can be understood, as shown in Figures 6, 7, and 22, the sampling component 40 includes a sampling element 41, which is disposed inside the housing 10. The sampling element 41 is an independent component placed, installed, or integrated inside the housing 10, and is used to sample the target structure 14 inside the housing 10. The target structure 14 refers to the sampleable structure inside the housing 10, such as the busbar component inside the housing 10, the current output position of the battery cell assembly 20, the high-voltage connection structure of the high-voltage distribution box, etc. The sampling element 41 is used to sample the target structure 14. The sampling element 41 can be mechanically or electrically connected to the target structure 14. For example, the sampling element 41 can be attached to the target structure 14 to collect the temperature information of the target structure 14, or the sampling element 41 can be electrically connected to the target structure 14 to collect the voltage or current information of the target structure 14.

[0165] In some examples of this application, the sampling element 41 can be a temperature sampling element, used to acquire temperature information of the target structure 14 inside the housing 10, such as a battery cell, a busbar, etc. The temperature sampling element can be a temperature sensor, such as a thermistor sensor or a thermocouple sensor. In other examples, the sampling element 41 can be a voltage sampling element, used to acquire voltage information of the target structure 14 inside the housing 10, such as a battery cell, etc. The voltage sampling element can be a conductive sheet, which is directly welded to the adapter 43 and the target structure 14. Alternatively, in some embodiments, the conductive sheet can be integrally formed on the adapter 43, and the adapter 43 and the target structure 14 can be directly welded for sampling. In other embodiments, the voltage sampling element can also be a shunt, a voltage transformer, or a linear optocoupler, etc.

[0166] In this embodiment, as shown in Figures 6 and 7, the sampling component 40 further includes a sampling circuit board 42. The sampling circuit board 42 is electrically connected to the battery management system 30. Multiple sampling lines 421 are spaced apart on the sampling circuit board 42, and the sampling lines 421 are electrically connected to the sampling elements 41. This allows the sampling information collected by the sampling elements 41 to be transmitted to the battery management system 30 through the sampling lines 421 and the sampling circuit board 42. The multiple sampling lines 421 are spaced apart and electrically isolated from each other. The sampling component 40 may include multiple sampling elements 41, and each sampling element 41 is connected to at least one of the multiple sampling lines 421 to transmit sampling information.

[0167] In some examples, when sampling element 41 is a voltage sampling element, one voltage sampling element is connected to one sampling line 421 to transmit the voltage information collected by the voltage sampling element to the battery management system 30. The battery device 200 has multiple voltage sampling elements that collect voltage information at different locations. Each voltage sampling element is connected to one of the multiple sampling lines 421 to transmit its collected voltage information to the battery management system 30 via its respective sampling line 421. For example, if the battery device 200 has a target structure 14 that requires voltage information collection, the sampling element 41 includes three voltage sampling elements. Three voltage sampling lines 421 are spaced apart on the sampling circuit board 42. The three voltage sampling elements are electrically connected to the target structure 14 and simultaneously connected to the three voltage sampling lines 421. The three voltage sampling elements transmit the voltage information of the target structure 14 to the battery management system 30 via three different sampling lines 421.

[0168] In other examples of this application, when the sampling element 41 is a temperature sampling element, one temperature sampling element is connected to two sampling lines 421 to transmit the temperature information collected by the temperature sampling element to the battery management system 30. The battery device 200 is provided with multiple temperature sampling elements, which collect temperature information at different locations. Each temperature sampling element is connected to two of the multiple sampling lines 421 to transmit the voltage information collected by each element to the battery management system 30 through the two sampling lines 421 connected to it. For example, the battery device 200 has three target structures 14 that require temperature information to be collected. Correspondingly, the sampling element 41 includes three temperature sampling elements. The sampling circuit board 42 is provided with six temperature sampling lines 421 at intervals. The three temperature sampling elements are connected to the three target structures 14 one by one. The three temperature sampling elements are connected to two of the six sampling lines 421 respectively. Moreover, the two sampling lines 421 corresponding to each temperature sampling element are not shared with each other. That is, one sampling line 421 is connected to one temperature sampling element, so that each temperature sampling element transmits the temperature information of the corresponding target structure 14 to the battery management system 30 through the two sampling lines 421 connected to it.

[0169] In this embodiment of the application, as shown in Figures 6 and 7, the sampling component 40 further includes an adapter 43, which is used to connect the sampling element 41 and the sampling line 421.

[0170] In this embodiment of the application, the adapter 43 includes a first connecting part 431, which is used to electrically connect with the sampling element 41. The first connecting part 431 can be directly electrically connected to the sampling element 41, such as by welding or crimping the first connecting part 431 to the sampling element 41. Alternatively, the first connecting part 431 can also be indirectly electrically connected to the sampling element 41, such as by connecting the first connecting part 431 to the sampling element 41 through a wire.

[0171] The adapter 43 also includes a second connecting portion 432, as shown in Figures 6 and 7. The second connecting portion 432 is connected to the first connecting portion 431. The second connecting portion 432 can be directly or indirectly connected to the first connecting portion 431, and the second connecting portion 432 can be mechanically or electrically connected to the first connecting portion 431. The second connecting portion 432 is provided with multiple electrical connection areas 433, which are electrically connected to the first connecting portion 431. This allows the multiple electrical connection areas 433 to be electrically connected to the sampling element 41 electrically connected to the first connecting portion 431. Each of the multiple electrical connection areas 433 corresponds one-to-one with a multiple sampling line 421, and at least one of the multiple electrical connection areas 433 is electrically connected to the corresponding sampling line 421, thereby electrically connecting the sampling element 41 connected to the first connecting portion 431 to the corresponding sampling line 421. The phrase "one-to-one correspondence between multiple electrical connection areas 433 and multiple sampling lines 421" means that there are multiple electrical connection areas 433, and one of the multiple electrical connection areas 433 is connected to one of the multiple sampling lines 421.

[0172] At least one of the multiple electrical connection areas 433 can be electrically connected to a corresponding sampling line 421. This means that one of the electrical connection areas 433 is electrically connected to one corresponding sampling line 421, or two of the electrical connection areas 433 are electrically connected to two different corresponding sampling lines 421. For example, when the sampling element 41 electrically connected to the first connection portion 431 is a voltage sampling element, one of the electrical connection areas 433 is electrically connected to one sampling line 421 to transmit voltage sampling information. When the sampling element 41 electrically connected to the first connection portion 431 is a temperature sampling element, two of the electrical connection areas 433 are electrically connected to two different sampling lines 421 to transmit temperature sampling information. Alternatively, in other cases, two or more electrical connection areas 433 may be connected one-to-one with two or more sampling lines 421.

[0173] In this embodiment, the ability of multiple sampling elements 41 to be electrically connected to corresponding sampling lines 421 via multiple identical adapters 43 means that the sampling assembly 40 may include multiple adapters 43. These adapters 43 form a class of connectors with identical structure and functional characteristics for connecting the sampling elements 41 and sampling lines 421. The multiple sampling elements 41 can achieve a one-to-one electrical connection via multiple adapters 43 corresponding to their respective sampling lines 421. For example, in a battery device 200, the sampling assembly 40 may include multiple sampling elements 41, such as one or more temperature sampling elements and one or more voltage sampling elements. Each sampling element 41 is connected to its corresponding sampling line 421 via an adapter 43, and the structures and functions of each adapter 43 are identical.

[0174] Understandably, among multiple identical adapters 43, having the same structure means that, from a geometric perspective, each adapter 43 has roughly the same structural shape and size. Without affecting the basic structure and function of the adapter 43, the dimensions of each adapter 43 may differ within a certain tolerance range due to manufacturing precision limitations.

[0175] The battery device 200 of this application embodiment includes a sampling component 40 comprising a sampling element 41, a sampling circuit board 42, and an adapter 43. The sampling element 41 is used to sample the target structure 14 of the battery device 200. The sampling circuit board 42 is provided with multiple sampling lines 421, which are electrically connected to the battery management system 30 to transmit the sampling signal collected by the sampling element 41 to the battery management system 30. The adapter 43 includes a first connecting part 431 and a second connecting part 432. The first connecting part 431 is electrically connected to the sampling element 41, and the second connecting part 432 is provided with multiple electrical connection areas 433 that are electrically connected to the first connecting part 431. The multiple electrical connection areas 433 correspond one-to-one with the multiple sampling lines 421 on the sampling circuit board 42, so that the sampling element 41 can be connected to the corresponding sampling line 421 through the adapter 43 to transmit the sampling signal to the battery management system 30.

[0176] Based on this, multiple sampling lines 421 are arranged at intervals on the sampling circuit board 42. The same adapter 43 corresponds one-to-one with multiple different sampling lines 421 through multiple different electrical connection areas 433. In actual use, the sampling lines 421 at different positions are selectively electrically connected to the corresponding electrical connection areas 433. Different sampling elements 41 and their corresponding sampling lines 421 can be electrically connected through the adapter 43. In this way, the number of electrical connection areas 433 is set to multiple, and the same adapter 43 can be adapted and connected to multiple sampling lines 421 at different positions, so that the same sampling circuit board 42 can be electrically connected to multiple different sampling elements 41 through multiple identical adapters 43. Thus, the versatility of the adapter 43 is improved, the variety of adapter 43 is relatively reduced, and the same mold or manufacturing process can be used to produce the adapter 43, simplifying the production process of the adapter 43. At the same time, when the adapter 43 is connected to the sampling line 421, the operator can simply select the corresponding electrical connection area 433 to connect to the sampling line 421, simplifying the connection operation and thus helping to improve the production efficiency of the battery device 200. In addition, due to the improved versatility of the adapter 43, the probability of misconnection of the sampling element 41 and the sampling line 421 due to confusion in the use of the adapter 43 is reduced, improving the accuracy, stability and reliability of sampling, thereby improving the overall performance of the battery device 200.

[0177] In some embodiments, as shown in Figures 6 and 7, multiple sampling lines 421 are arranged at intervals along a first direction. The sampling element 41 includes multiple first sampling elements 41a and multiple second sampling elements 41b. The adapter 43 includes multiple first adapters 43a and multiple second adapters 43b. The length of the first adapter 43a along the first direction is different from the length of the second adapter 43b along the first direction. The multiple first sampling elements 41a are connected to the multiple first adapters 43a in a one-to-one correspondence, and the multiple second sampling elements 41b are connected to the multiple second adapters 43b in a one-to-one correspondence.

[0178] In this embodiment, by setting multiple first adapters 43a and second adapters 43b with different lengths along the layout direction of the sampling line 421, correspondingly, different numbers of electrical connection areas 433 can be set on each of the first adapters 43a and each of the second adapters 43b to correspond one-to-one with the multiple sampling lines 421, so that the same sampling circuit board 42 can be connected one-to-one with the corresponding multiple first sampling elements 41a through the multiple first adapters 43a, and connected one-to-one with the corresponding multiple second sampling elements 41b through the multiple second adapters 43b.

[0179] Understandably, in this embodiment, multiple sampling lines 421 are arranged at intervals along a first direction. The first direction can be the width direction of the sampling circuit board 42, that is, multiple sampling lines 421 are arranged at intervals along the width direction of the sampling circuit board 42. Multiple sampling lines 421 extend along the length direction of the sampling circuit board 42. The sampling lines 421 can be basically straight, and multiple sampling lines 421 extend in a straight line along the length direction of the sampling circuit board 42. Alternatively, the sampling lines 421 can also be curved, and multiple sampling lines 421 extend in different directions with different shapes, as long as they are arranged at intervals along the first direction.

[0180] The sampling element 41 includes multiple first sampling elements 41a and multiple second sampling elements 41b. The first sampling elements 41a and the second sampling elements 41b can be elements of the same type with the same sampling function, such as temperature sampling elements that collect temperature information or voltage sampling elements that collect voltage information. Alternatively, the first sampling elements 41a and the second sampling elements 41b can be elements of different types with different sampling functions. For example, the first sampling element 41a can be a temperature sampling element, and the second sampling element 41b can be a voltage sampling element.

[0181] The adapter 43 includes a plurality of first adapters 43a and a plurality of second adapters 43b, wherein the first adapters 43a and the second adapters 43b may have the same structure, and the two are basically the same except for the length along the first direction.

[0182] In some embodiments, as shown in Figures 6 and 7, the number of electrical connection areas 433 can be at least half the number of sampling lines 421. That is, the number of electrical connection areas 433 provided on the second connection portion 432 can be equal to half the number of sampling lines 421, or the number of electrical connection areas 433 provided on the second connection portion 432 can exceed half the number of sampling lines 421, or the number of electrical connection areas 433 provided on the second connection portion 432 can be equal to the number of sampling lines 421, or the number of electrical connection areas 433 provided on the second connection portion 432 can also exceed the number of sampling lines 421.

[0183] Thus, multiple electrical connection areas 433 are provided on the second connection portion 432 of the same adapter 43, and the number of electrical connection areas 433 is equal to or greater than half the number of sampling lines 421. That is, one adapter 43 can be connected to half or more of the sampling lines 421 on the same sampling circuit board 42. In this way, only two identical adapters 43 are needed to electrically connect all the sampling lines 421 to the corresponding multiple sampling elements 41 for the same sampling circuit board 42. The versatility of the adapter 43 is further improved, the type design of the adapter 43 is more standardized and uniform, the production process of the adapter 43 is simplified, and the production efficiency is improved.

[0184] In some embodiments, as shown in Figures 6, 8, and 9, multiple sampling lines 421 are spaced apart along a first direction, and multiple electrical connection areas 433 are spaced apart along the first direction. The first direction can be the width direction of the sampling circuit board 42, meaning the multiple sampling lines 421 are spaced apart along the width direction of the sampling circuit board 42. The multiple sampling lines 421 also extend along the length direction of the sampling circuit board 42. The sampling lines 421 can be substantially straight, extending linearly along the length direction of the sampling circuit board 42, or they can be curved, extending in different directions with different shapes, as long as they are spaced apart along the first direction.

[0185] In this embodiment, multiple sampling lines 421 are arranged at intervals along the first direction. Correspondingly, multiple electrical connection areas 433 are arranged at intervals along the first direction. Thus, the sampling lines 421 are arranged according to a certain arrangement rule, so that the electrical connection areas 433 are also arranged according to a certain rule. Compared with a messy arrangement, the structure of the adapter 43 is simplified. The adapter 43 provides a second connecting part 432 extending along the first direction, which can meet the requirement of one-to-one correspondence between the electrical connection areas 433 and the sampling lines 421. The adapter 43 has a relatively simple structure and simple molding method. The correspondence between the electrical connection areas 433 and the sampling lines 421 is clearer and the connection operation is more convenient.

[0186] In some examples, as shown in Figures 6, 8 and 9, each sampling line 421 has a straight line segment 4211 extending along a direction perpendicular to the first direction, and multiple straight line segments 4211 are arranged parallel to each other along the first direction.

[0187] Each sampling line 421 can be straight, with a segment of the straight sampling line 421 arranged parallel to each other along the first direction; or, each sampling line 421 can be curved, with each curved sampling line 421 having a straight segment 4211, and the straight segment 4211 of each sampling line 421 arranged parallel to each other along the first direction.

[0188] Thus, multiple sampling lines 421 are set as straight lines at at least one section, and multiple straight line segments 4211 are evenly spaced along the first direction. The layout of the sampling lines 421 is more regular, and the layout of the sampling lines 421 on the sampling circuit board 42 is clearer. Correspondingly, the electrical connection area 433 on the adapter 43 can also be set more regularly, which simplifies the structure of the adapter 43. At the same time, it makes the correspondence between each electrical connection area 433 on the adapter 43 and the multiple sampling lines 421 more intuitive and clear, which helps to simplify the connection operation between each electrical connection area 433 on the adapter 43 and the corresponding sampling line 421 on the sampling circuit board 42.

[0189] In some embodiments, as shown in Figures 6, 8 and 9, multiple straight segments 4211 are sequentially arranged along a first direction starting from one side of the sampling circuit board 42. Along the first direction, the length of the second connecting portion 432 is greater than or equal to half the length of the sampling circuit board 42.

[0190] The sequential arrangement of multiple straight segments 4211 along the first direction from one side of the sampling circuit board 42 means that the starting position of each straight segment 4211 of the multiple sampling lines 421 is one side of the sampling circuit board 42 along the first direction. That is, the straight segment 4211 of one sampling line 421 is located at the side of the sampling circuit board 42, and the remaining multiple straight segments 4211 are arranged sequentially at intervals along the first direction. Each straight segment 4211 of the multiple sampling lines 421 can be arranged along the first direction from the starting side to the opposite side, or it can be arranged along the first direction from the starting side to any position in the middle of the sampling circuit board 42.

[0191] For example, the first direction can be the width direction of the sampling circuit board 42. Each straight segment 4211 of the multiple sampling lines 421 starts from one side of the sampling circuit board 42 in the width direction and is arranged sequentially at intervals along the width direction. The sampling lines 421 can fill the entire sampling circuit board 42 in the width direction. That is, each straight segment 4211 of the multiple sampling lines 421 can be arranged from the starting side to the opposite side along the width direction of the sampling circuit board 42, or it can be arranged from the starting side to any position in the middle of the sampling circuit board 42 in the width direction.

[0192] Thus, multiple straight segments 4211 of multiple sampling lines 421 are sequentially arranged along the first direction starting from one side of the sampling circuit board 42. The multiple straight segments 4211 occupy a certain size of the sampling circuit board 42. Furthermore, along the first direction, the length of the second connecting part 432 is greater than or equal to half the length of the sampling circuit board 42. Thus, along the first direction, the orthographic projection of the second connecting part 432 on the sampling circuit board 42 can cover half or more of the sampling lines 421. On this basis, multiple electrical connection areas 433 are sequentially and spaced along the first direction on the second connecting part 432, so that the multiple electrical connection areas 433 can be directly opposite the multiple sampling lines 421. The adapter 43 has a simple structure, and its design and molding process are also relatively simple.

[0193] In some examples, as shown in Figure 6, the straight segments 4211 of multiple sampling lines 421 are evenly spaced along the width direction of the sampling circuit board 42. When the number of sampling lines 421 is 18, an adapter 43 with 12 electrical connection areas 433 is used and is set on one side of the sampling circuit board 42 in the width direction. Its second connection part 432 extends from one side of the sampling circuit board 42 in the width direction to the other side of the sampling circuit board 42. In this way, the 12 continuously arranged sampling lines 421 on the sampling circuit board 42 can be connected to the... The 12 electrical connection areas 433 on the adapter 43 correspond one-to-one. When any one or two of the 12 sampling lines 421 need to be connected to the sampling element 41, the sampling line 421 corresponding to the sampling element 41 can be selected and connected to the corresponding electrical connection area 433. For example, 12 different voltage sampling elements can be connected to the 12 corresponding sampling lines 421 through 12 identical adapters 43, or 6 different temperature sampling elements can be connected to the 12 corresponding sampling lines 421 through 6 identical adapters 43. Based on this, a converter 43 with eight electrical connection areas 433 can be provided on the other side of the sampling circuit board 42 in the width direction. The converter 433 is located on the other side of the sampling circuit board 42, and its second connection part 432 extends from the other side to the side where the previous converter 43 is located. In this way, the remaining eight sampling lines 421 on the sampling circuit board 42 can be electrically connected to the corresponding sampling element 41 through another converter 43 with eight electrical connection areas 433.

[0194] In other examples, as shown in Figure 6, the straight segments 4211 of multiple sampling lines 421 are evenly spaced along the width direction of the sampling circuit board 42. When the number of sampling lines 421 is 18, an adapter 43 with 18 electrical connection areas 433 can also be used. The first connection part 431 is set on one side of the sampling circuit board 42 in the width direction, so that the second connection part 432 extends from one side of the sampling circuit board 42 in the width direction to the opposite side of the sampling circuit board 42. In this way, the 18 sampling lines 421 on the sampling circuit board 42 can correspond one-to-one with the 18 electrical connection areas 433 on the adapter 43. When any one or two of the 18 sampling lines 421 need to be connected to the sampling element 41, the sampling line 421 corresponding to the sampling element 41 can be selected and connected to the corresponding electrical connection area 433. For example, 18 different voltage sampling elements can be connected to 18 corresponding sampling lines 421 through 18 identical adapters 43, or 9 different temperature sampling elements can be connected to 12 corresponding sampling lines 421 through 9 identical adapters 43.

[0195] In some embodiments, as shown in Figures 9 and 10, adjacent electrical connection regions 433 are arranged alternately along a first direction.

[0196] In this context, "alternating arrangement of adjacent electrical connection areas 433 along the first direction" means that adjacent electrical connection areas 433 are not arranged continuously along the first direction. They are staggered from each other along the first direction, with a gap in between. That is, along the first direction, adjacent electrical connection areas 433 are staggered to the left and right with a straight line parallel to the first direction as the center line. For example, on the second connection portion 432, two adjacent electrical connection areas 433 are arranged alternately along the first direction (for example, the first direction can be the length direction of the second connection portion 432), with one located slightly higher on the right side along the first direction and the other correspondingly located slightly lower on the left side, with a short gap in between where there is no electrical connection area 433.

[0197] In this way, by arranging two adjacent electrical connection areas 433 alternately along the first direction, when two adjacent electrical connection areas 433 are simultaneously electrically connected to the corresponding two adjacent sampling lines 421, the risk of short circuit can be reduced and the stability and reliability of sampling can be improved.

[0198] In some embodiments, as shown in FIG10, the second connecting portion 432 includes a main body portion 4321 and a plurality of connecting sub-portions 4322. The main body portion 4321 is connected to the first connecting portion 431 and extends along a first direction. One end of the plurality of connecting sub-portions 4322 is connected to the main body portion 4321, and the other end is disposed away from the main body portion 4321 along a second direction. The plurality of connecting sub-portions 4322 are spaced apart along the first direction. An electrical connection area 433 is disposed on the connecting sub-portion 4322. The second direction is parallel to the extension direction of the sampling line 421.

[0199] The main body 4321 is electrically connected to the first connecting part 431, so that multiple connecting sub-parts 4322 connected to the main body 4321 are electrically connected to the first connecting part 431. Thus, multiple connecting sub-parts 4322 are provided in the second connecting part 432, and the multiple connecting sub-parts 4322 are spaced apart along the first direction and electrically connected to the first connecting part 431 through the main body 4321. Electrical connection areas 433 are provided in each connecting sub-part 4322. In this way, the electrical connection areas 433 provided in different connecting sub-parts 4322 are spaced apart along the first direction. When the electrical connection areas 433 provided in different connecting sub-parts 4322 are simultaneously electrically connected to the corresponding sampling line 421, the risk of short circuit can be reduced, thereby improving the stability and reliability of sampling.

[0200] For example, when the sampling element 41 is a temperature sampling element, such as a thermocouple sensor or a thermistor sensor, it needs to be electrically connected to two adjacent sampling lines 421 to form a sampling loop. In this way, the electrical connection areas 433 corresponding to the two adjacent sampling lines 421 that are electrically connected to the same temperature sampling element are respectively set on two adjacent connection sub-parts 4322, so that the two connection sub-parts 4322 are spaced apart along the first direction, thereby reducing the risk of short circuit due to the connection of the electrical connection position.

[0201] In some embodiments, as shown in FIG10, each connecting sub-part 4322 is provided with an electrical connection area 433. That is, the number of connecting sub-parts 4322 is greater than or equal to the number of electrical connection areas 433. One connecting sub-part 4322 corresponds to one electrical connection area 433, that is, one connecting sub-part 4322 corresponds to one sampling line 421. In this way, multiple connecting sub-parts 4322 can be arranged at intervals so that multiple electrical connection areas 433 are spaced apart along the first direction. When any two adjacent electrical connection areas 433 are connected to the corresponding two adjacent sampling lines 421, their connection points are spaced apart along the first direction, thereby reducing the short circuit risk when two adjacent sampling lines 421 are connected to two adjacent electrical connection areas 433.

[0202] In some embodiments, as shown in FIG10, the lengths of two adjacent connecting sub-parts 4322 along the second direction are unequal, and the electrical connection area 433 is disposed at the end of the connecting sub-part 4322 away from the main body 4321. The two adjacent connecting sub-parts 4322 are arranged in a pattern of one long and one short along the second direction, with a significant difference in length. This results in a significant difference in the distance between the ends of the two adjacent connecting sub-parts 4322 away from the main body 4321 and the main body 4321. This arrangement results in unequal protrusion lengths of the connecting sub-parts 4322 from the main body 4321, and the electrical connection area 433 is disposed at the end of the connecting sub-part 4322 away from the main body 4321, causing the two adjacent electrical connection areas 433 to be staggered along the first direction.

[0203] In some embodiments, as shown in Figures 11 to 16, the surface of the adapter 43 is covered with a first insulating film 434. The first insulating film 434 has a first opening 4341 corresponding to the position of each electrical connection area 433. The first opening 4341 is located on the side of the electrical connection area 433 facing the sampling circuit board 42. Each electrical connection area 433 is exposed relative to the first insulating film 434 through the corresponding first opening 4341.

[0204] In this embodiment, the adapter 43 serves to electrically connect the sampling line 421 and the sampling element 41 in the sampling element 41. In order to ensure its stable and reliable operation, a first insulating film 434 is covered on the surface of the adapter 43. The first insulating film 434 can effectively reduce the risk of electrical faults such as short circuits between the adapter 43 and other surrounding components.

[0205] Specifically, a first opening 4341 is provided on the first insulating film 434 at the position corresponding to each electrical connection area 433. The first opening 4341 is located on the side of the electrical connection area 433 facing the sampling circuit board 42. In this way, during the process of connecting the adapter 43 and the sampling line 421, the electrical connection area 433 can accurately contact and electrically connect with the sampling line 421 on the sampling circuit board 42, so that the electrical connection area 433 can reliably connect with the corresponding sampling line 421 through the corresponding first opening 4341, thereby achieving stable signal transmission.

[0206] The first insulating film 434 is made of a material with good insulation properties and mechanical strength, such as polyimide film, polyester film, or polyvinyl chloride film. This material can maintain stable insulation performance in harsh working environments and withstand certain mechanical stress, reducing the risk of damage to the first insulating film 434 during use. Furthermore, the first insulating film 434 can also be made of a material with certain hardness and structural strength, which can also reduce the risk of warping at the corners of the adapter 43 when it covers the adapter 43.

[0207] Through the above design, the adapter 43 of this embodiment can effectively improve the insulation performance while ensuring the reliability of electrical connection, thereby improving the sampling stability and reliability of the sampling component 40, and thus improving the overall stability and reliability of the battery device 200.

[0208] In some embodiments, as shown in Figures 11 to 16, the adapter 43 has a first surface facing the sampling circuit board 42 and a second surface facing away from the sampling circuit board 42. The first insulating film 434 includes a first film layer 4342 and a second film layer 4343. The first film layer 4342 is disposed on the first surface, and the second film layer 4343 is disposed on the second surface. A first opening 4341 is disposed on the first film layer 4342.

[0209] In this embodiment, the adapter 43 has a first surface and a second surface disposed opposite to each other, wherein the first surface is disposed facing the sampling circuit board 42 and the second surface is disposed away from the sampling circuit board 42. In order to ensure the insulation reliability and stability of the adapter 43 during operation, a first film layer 4342 and a second film layer 4343 of a first insulating film 434 are respectively disposed on the first surface and the second surface of the adapter 43, so that the first surface and the second surface of the adapter 43 can be electrically isolated from other surrounding electronic components.

[0210] The first film layer 4342 is applied to the first surface of the adapter 43. The material used is a material with good insulation properties, such as polyimide film, polyester film, or polyvinyl chloride film. The first film layer 4342 reduces the risk of electrical failure caused by short circuits in the adapter 43 due to contact between the first surface and other components. In addition, the first film layer 4342 has a first opening 4341 at the position corresponding to each electrical connection area 433. The size and position of the first opening 4341 are adapted to the size and position of the electrical connection area 433, so that each electrical connection area 433 can accurately contact and connect with the corresponding sampling line 421 through the corresponding first opening 4341. The second film layer 4343 is applied to the second surface of the adapter 43. Its material and function can be similar to the first film layer 4342. For example, it can also be a polyimide film, polyester film, or polyvinyl chloride film. The application of the second film layer 4343 can further enhance the insulation performance of the adapter 43 and reduce the risk of electrical failure caused by the second surface of the adapter 43 contacting other components. At the same time, the second film layer 4343 also has good mechanical strength and can protect the adapter 43 on the second surface, reducing the risk of damage to the adapter 43 from external forces during use.

[0211] In some embodiments, as shown in Figures 11 to 16, the second film layer 4343 is provided with a second opening 4344 at the position of each electrical connection region 433, and each electrical connection region 433 is exposed relative to the second film layer 4343 through the second opening 4344.

[0212] In this embodiment, a second opening 4344 is provided in the second film layer 4343, which corresponds to the electrical connection area 433. This allows the electrical connection area 433 to be exposed relative to the second film layer 4343 on the side where the second surface of the adapter 43 is located. This facilitates the connection between the electrical connection area 433 and the corresponding sampling line 421. For example, when connecting each electrical connection area 433 and the corresponding sampling line 421 by welding, the welding operation can be performed directly at the second opening 4344.

[0213] In some embodiments, as shown in Figures 11 to 16, the second connecting portion 432 is provided with a third opening 4325 at a position between two adjacent electrical connection areas 433, and the first insulating film 434 is provided with a fourth opening 4345 at a position between two adjacent electrical connection areas 433. The fourth opening 4345 passes through the third opening 4325 to penetrate the first film layer 4342 and the second film layer 4343, and the two adjacent electrical connection areas 433 are separated by the corresponding third opening 4325 and fourth opening 4345.

[0214] In this embodiment, a third opening 4325 and a fourth opening 4345 are provided between two adjacent electrical connection areas 433, so that the two adjacent electrical connection areas 433 are not connected through the first insulating film 434. That is, the two adjacent electrical connection areas 433 are not connected through the first insulating film 434 in the path. In this way, when condensate drips onto the first insulating film 434, the condensate can flow into the third opening 4325, thereby cutting off the path of condensate connecting the two adjacent electrical connection areas 433, reducing the risk of short circuit caused by contact with condensate in the adapter 43, and improving the reliability and stability of the adapter 43.

[0215] In this context, it can be understood that the fourth opening 4345 penetrates the first membrane layer 4342 and the second membrane layer 4343 through the third opening 4325. This means that the fourth opening 4345 is respectively provided on the first membrane layer 4342 and the second membrane layer 4343, and the third opening 4325 is provided at the position between two adjacent electrical connection areas 433 of the second connecting part 432 of the adapter 43. The third opening 4325 is directly opposite to the fourth opening 4345 on the first membrane layer 4342, so that the fourth opening 4345 can be connected downward to the fourth opening 4345 provided on the second membrane layer 4343 through the third opening 4325.

[0216] In some embodiments, the first insulating film 434 is attached to the surface of the adapter 43. That is, the first insulating film 434 is tightly adhered to the surface of the adapter 43, without defects such as bubbles or wrinkles, so that the first insulating film 434 can be reliably and stably attached to the adapter 43. For example, hot pressing or adhesive bonding methods can be used to attach the first insulating film 434 to the surface of the adapter 43.

[0217] In other embodiments, as shown in Figures 17 to 21, unlike the embodiments described above, the second connecting portion 432 includes a first branch 4323 and a second branch 4324 electrically connected to the first connecting portion 431. The second branch 4324 and the first branch 4323 are spaced apart along a direction intersecting the first direction. The electrical connection area 433 includes a plurality of first areas 4331 and a plurality of second areas 4332. The plurality of first areas 4331 are spaced apart along the first direction in the first branch 4323, and the plurality of second areas 4332 are spaced apart along the first direction in the second branch 4324. In two adjacent sampling lines 421, one corresponds to the first area 4331 and the other corresponds to the second area 4332.

[0218] In this embodiment, the second connecting portion 432 is divided into a first branch 4323 and a second branch 4324. Multiple electrical connection areas 433 (i.e., multiple first areas 4331) are provided on the first branch 4323, and multiple electrical connection areas 433 (i.e., multiple second areas 4332) are provided on the second branch 4324. By arranging the first branch 4323 and the second branch 4324 at intervals, the multiple electrical connection areas 433 provided on the first branch 4323 and the multiple electrical connection areas 433 provided on the second branch 4324 are spaced apart from each other. When connecting two adjacent sampling lines 421 to their corresponding electrical connection regions 433, one sampling line 421 can be connected to a first region 4331, while the other sampling line 421 is connected to a second region 4332. In this way, the spacing between the adjacent electrical connection regions 433 (i.e., the adjacent first region 4331 and the second region 4332) corresponding to the two adjacent sampling lines 421 is increased, thereby further reducing the short-circuit risk when two adjacent sampling lines 421 are connected to their corresponding adjacent electrical connection regions 433.

[0219] For example, when the sampling element 41 is a temperature sampling element, such as a thermocouple sensor or a thermistor sensor, it needs to be electrically connected to two adjacent sampling lines 421 to form a sampling loop. In this way, the electrical connection areas 433 corresponding to the two adjacent sampling lines 421 that are electrically connected to the same temperature sampling element are respectively set in the first branch 4323 and the second branch 4324. That is, a first area 4331 is connected to one sampling line 421, and a second area 4332 is connected to another sampling line 421, so that the two electrical connection areas 433 are also spaced apart along the second direction, thereby further reducing the risk of short circuit.

[0220] In this embodiment, it should be noted that the direction intersecting the first direction means that the second direction is not parallel to the first direction, and there is a certain angle between the second direction and the first direction. This angle can be an acute angle, a right angle, or an obtuse angle. For example, the second direction can be perpendicular to the first direction, where the first direction can be the width direction of the sampling circuit board 42, and the second direction can be the length direction of the sampling circuit board 42; or the angle between the second direction and the first direction can be an acute angle, where, when the sampling circuit board 42 is a square board, the first direction can be the width direction of the sampling circuit board 42, and the second direction can be the diagonal direction of the sampling circuit board 42.

[0221] In this embodiment, as shown in Figures 17, 18 and 20, adjacent first zones 4331 and second zones 4332 are arranged alternately along a direction perpendicular to the first direction.

[0222] Thus, the electrical connection areas 433 corresponding to the two adjacent sampling lines 421 are respectively set in the first branch 4323 and the second branch 4324, so that the two adjacent electrical connection areas 433, that is, the adjacent first area 4331 and the second area 4332, are staggered along the direction perpendicular to the first direction, and the spacing between the two adjacent electrical connection areas 433 (that is, the adjacent first area 4331 and the second area 4332) is increased, thereby further reducing the short circuit risk when the two adjacent sampling lines 421 are connected to the corresponding two adjacent electrical connection areas 433.

[0223] In this embodiment, as shown in Figures 17 and 18, the number of first regions 4331 is at least one-fifth of the number of sampling lines 421, and / or the number of second regions 4332 is at least one-fifth of the number of sampling lines 421.

[0224] The number of samples in the first region 4331 can be one-fifth or more than one-fifth of the number of samples in the second region 4332.

[0225] Thus, the number of electrical connection areas 433 provided in either or both of the first branch 4323 and the second branch 4324 is at least one-fifth of the number of sampling lines 421, thereby reducing the types of adapters 43. This allows the same sampling circuit board to be electrically connected to multiple different sampling elements through multiple identical adapters, thus giving the adapters better versatility and reducing the types of adapters required.

[0226] In a specific embodiment, as shown in Figures 17 and 18, the number of first regions 4331 is at least half the number of sampling lines 421, and / or the number of second regions 4332 is at least half the number of sampling lines 421.

[0227] The number of first zones 4331 can be half or more than half the number of sampling lines 421. The number of second zones 4332 can be half or more than half the number of sampling lines 421. Thus, the number of electrical connection zones 433 in either the first branch 4323 or the second branch 4324 is at least half the number of sampling lines 421, making the total number of electrical connection zones 433 exceed half the number of sampling lines 421. This allows a single adapter 43 to be electrically connected to at least one of more than half of the sampling lines 421 as needed. This enables the same sampling circuit board 42 to be electrically connected to multiple different sampling elements 41 through multiple identical adapters 43, thus improving the versatility of the adapters 43 and reducing the variety of adapters 43 required.

[0228] In this embodiment, as shown in Figures 18 to 21, the surface of the adapter 43 is covered with a first insulating film 434. The first insulating film 434 includes a first film layer 4342 and a second film layer 4343. The adapter 43 has a first surface facing the sampling circuit board 42 and a second surface facing away from the sampling circuit board 42. The first film layer 4342 is disposed on the first surface, and the second film layer 4343 is disposed on the second surface. The first film layer 4342 has a first opening 4341 corresponding to the position of each electrical connection area 433, and the second film layer 4343 is disposed on the second surface. 343 is provided with a second opening 4344 at the position of each electrical connection area 433, and each electrical connection area 433 is exposed relative to the first insulating film 434 through the corresponding first opening 4341 and second opening 4344; the first insulating film 434 is also provided with a fifth opening 4346 at the position between the first branch 4323 and the second branch 4324, the fifth opening 4346 penetrates the first film layer 4342 and the second film layer 4343, and the fifth opening 4346 separates the two adjacent first areas 4331 and second areas 4332.

[0229] Similar to the above embodiment, a first insulating film 434 is covered on the surface of the adapter 43. The first insulating film 434 includes a first film layer 4342 and a second film layer 4343. The first film layer 4342 insulates between the adapter 43 and the sampling circuit board 42. The second film layer 4343 insulates the second surface (upper surface) of the adapter 43 facing away from the sampling circuit board 42. The first film layer 4342 has a first opening 4341 at the position of each electrical connection area 433, so that each electrical connection area 433 is exposed relative to the first film layer 4342 and can be connected to the corresponding sampling line 421. The second film layer 4343 has a second opening 4344 at the position of each electrical connection area 433. When the electrical connection areas 433 and the corresponding sampling lines 421 are connected by welding, the welding operation can be performed directly at the second opening 4344.

[0230] Based on the above structure, unlike the previous embodiments, as shown in Figures 18 to 21, a fifth opening 4346 is provided between the first branch 4323 and the second branch 4324 to separate the first area 4331 of the first branch 4323 and the second area 4332 of the second branch 4324. In this way, the two adjacent electrical connection areas 433 of the first branch 4323 and the second branch 4324 are not connected by the first insulating film 434 in the path. Thus, when condensate drips onto the first insulating film 434, the condensate can flow into the fifth opening 4346, thereby cutting off the path of condensate connecting the two adjacent electrical connection areas 433 and reducing the risk of short circuit due to contact with condensate in the adapter 43.

[0231] In this embodiment, it can be understood that the fifth opening 4346 penetrating the first film layer 4342 and the second film layer 4343 means that the first film layer 4342 and the second film layer 4343 are respectively provided with a fifth opening 4346, and both fifth openings 4346 are located at the interval between the first branch 4323 and the second branch 4324, so that the fifth opening 4346 on the first film layer 4342 can be connected downward to the fifth opening 4346 provided in the second film layer 4343 through the interval between the first branch 4323 and the second branch 4324.

[0232] In this embodiment, as shown in Figures 18 to 21, the fifth opening 4346 is a strip-shaped elongated hole. Along the first direction, the fifth opening 4346 extends from one end of the second connecting portion 432 to the opposite end. A plurality of first regions 4331 and a plurality of second regions 4332 are respectively disposed on opposite sides of the fifth opening 4346.

[0233] A strip-shaped elongated hole is provided between the first branch 4323 and the second branch 4324. Multiple first areas 4331 on the first branch 4323 and multiple second areas 4332 on the second branch 4324 are located on opposite sides of the strip-shaped elongated hole. This strip-shaped elongated hole is the fifth opening 4346 that separates two adjacent electrical connection areas 433. In this way, by setting the fifth opening 4346 as a strip-shaped elongated hole, multiple first areas 4331 and multiple second areas 4332 are separated by a strip-shaped elongated hole. Compared with setting multiple fifth openings 4346, setting a strip-shaped elongated hole simplifies the structure of the adapter 43. At the same time, the space of the strip-shaped elongated hole is relatively increased, and the volume of condensate that can be contained is increased. The probability of the two electrical connection areas 433 being connected by dripping condensate is further reduced.

[0234] It should be noted that, in the above embodiments, the first insulating film 434 covering the surface of the adapter 43 means that the first insulating film 434 substantially covers the entire outer surface of the adapter 43. The outer surface includes a first surface of the adapter 43 facing the sampling circuit board 42 and a second surface facing away from the sampling circuit board 42, and also includes the side surfaces connecting the first and second surfaces. That is, the first insulating film 434 includes a first film layer 4342 covering the first surface and a second film layer 4343 covering the second surface, as well as side film layers (not shown in the figure) connecting the first film layer 4342 and the second film layer 4343 and covering the side surfaces.

[0235] In some embodiments, as shown in FIG7, FIG20 and FIG21, the adapter 43 further includes an adapter portion 435, through which the first connecting portion 431 is connected to the second connecting portion 432.

[0236] Specifically, part of the adapter 435 is directly connected to the first connecting part 431, and the other part of the adapter 435 is directly connected to the second connecting part 432. The adapter 435 is set to connect the first connecting part 431 and the second connecting part 432. By designing the dimensions of the adapter 435, the adapter 43 can have different lengths to adapt to the sampling requirements of different locations.

[0237] In some embodiments, as shown in Figures 7, 20, and 21, a first connecting portion 431 is connected to one end of a transition portion 435, and a second connecting portion 432 is connected to the opposite end of the transition portion 435. At least the middle portion of the transition portion 435 is a flexible portion. The transition portion 435 has a flexible portion that can deform under force. On the one hand, this allows the transition portion 435 itself to resist certain external impacts. On the other hand, when the target position of the sampling element 41 changes relative to the sampling circuit board 42 due to external force, the flexible transition portion 435 can adaptively adjust its position through deformation, ensuring that the first connecting portion 431 and the sampling element 41 always maintain a reliable connection, thus guaranteeing stable sampling.

[0238] In some embodiments, the adapter 435 is a flexible bending portion 4351. The flexible bending portion of the adapter 435 can be compressed to bend, and can also be stretched to undergo tensile deformation. When compressed, it can shorten the gap between the first connecting portion 431 and the second connecting portion 432 of the adapter 43; when stretched, it can lengthen the gap. This allows the adapter 43 to adapt to larger positional changes in the sampling element 41, thus giving the adapter 43 better versatility.

[0239] In some embodiments, the adapter 435 is a flexible conductive wire. The adapter 435 can be a metal conductor such as copper or aluminum wire, or it can be a flexible cable or an FFC (Flexible Flat Cable).

[0240] In some embodiments, as shown in Figures 7, 21, and 23, the sampling element 41 is mounted on the first connecting portion 431. Mounting the sampling element 41 on the first connecting portion 431, that is, directly mounting the sampling element 41 to the adapter 43, allows for the assembly and disassembly of the sampling element 41 and the adapter 43 as a single unit. This eliminates the need to connect the adapter 43 and the sampling element 41, thereby simplifying the connection operation of the sampling assembly 40 and improving assembly efficiency.

[0241] In some embodiments, as shown in Figures 5 and 21 to 23, the first connecting portion 431 is provided with a mounting member 4312 for connecting with the target structure 14. The mounting member 4312 has a mounting groove 4313, and the sampling element 41 is installed in the mounting groove 4313. By providing the mounting member 4312 in the first connecting portion 431 and installing the sampling element 41 in the mounting groove 4313 of the mounting member 4312, the mounting member 4312 can be connected to the target structure 14 during use. The connection structure of the sampling element 41 is simple, and the disassembly and assembly operations are convenient.

[0242] Understandably, the mounting component 4312 is connected to the target structure 14, for example, by snap-fit, fastening, gluing, screwing, or welding.

[0243] In some embodiments, as shown in Figures 21 to 23, the target structure 14, such as a busbar component, may be provided with a slot 141, and the mounting component 4312 is adapted to and snapped into the slot 141. That is, the sampling element 41 is connected to the target structure 14 by cooperating with the slot 141 through the mounting component 4312. The connection structure of the sampling element 41 is simple and the disassembly and assembly operations are convenient.

[0244] In some embodiments, as shown in Figures 21 to 23, the mounting member 4312 is further provided with a sealing member 4314, which at least seals the opening of the mounting groove 4313. By providing the sealing member 4314 in the mounting groove 4313, and ensuring that the sealing member 4314 at least seals the opening of the mounting groove 4313, the sealing member 4314 can protect the internal sampling element 41, reduce the influence of the environment outside the mounting groove 4313 on the sampling element 41, and ensure accurate sampling by the sampling element 41.

[0245] Wherein, the sealing element 4314 at least seals the opening of the mounting groove 4313 means that the sealing element 4314 can seal only the opening of the mounting groove 4313, and can seal other gaps in the mounting groove 4313, so that the mounting groove 4313 as a whole forms a sealed space.

[0246] In a specific embodiment, the sealant 4314 can be a sealant. During production, the sampling element 41 is installed in the mounting groove 4313, and then the fluid sealant is poured into the mounting groove 4313. After the sealant solidifies, it can isolate external moisture and other impurities, thereby reducing the impact of external environmental factors on the sampling element 41. Of course, in other embodiments, the sealant 4314 can also be made of other materials, such as rubber or foam.

[0247] In some embodiments, the sampling element 41 is a temperature sensor, and the seal 4314 is a heat-conducting element. When the sampling element 41 is a temperature sensor, the seal 4314 is a corresponding heat-conducting element, which can conduct heat in a timely manner and reduce the adverse effects of the seal 4314 on the thermal sensing of the temperature sensor.

[0248] In some embodiments, as shown in FIG6, FIG7 and FIG22, the sampling line 421 includes a conductive wire core 4213 and a second insulating film 4212. The surface of the wire core 4213 facing the second connection portion 431 is covered with the second insulating film 4212. The second insulating film 4212 has a sixth opening at the position corresponding to the electrical connection area 433. The position of the wire core 4213 corresponding to the electrical connection area 433 is exposed relative to the second insulating film 4212 through the sixth opening.

[0249] In this embodiment, the sampling line 421 includes a conductive wire core 4213 and a second insulating film 4212. The second insulating film 4212 insulates the surface of the wire core 4213 facing the second connecting portion 431. By partially providing multiple sixth openings in the second insulating film 4212, each of the multiple sixth openings corresponds one-to-one with multiple wire cores 4213, so that each wire core 4213 can only be electrically connected to the corresponding electrical connection area 433 through its own sixth opening, while other positions are covered by the second insulating film 4212. This reduces the risk that the wire core 4213 may come into contact with other surrounding electronic components and affect the normal and stable transmission of the sampling signal.

[0250] In some embodiments, the electrical connection area 433 is welded to the wire core 4213 at the sixth opening.

[0251] In this embodiment, as shown in Figures 6 and 20 to 22, the electrical connection area 433 is provided with a through structure 4333 for solder to pass through. The through structure 4333 extends from one side surface of the electrical connection area 433 toward the sampling line 421 to the opposite side surface.

[0252] Thus, by setting a through structure 4333 in the electrical connection area 433, when welding the electrical connection area 433 and the sampling line 421, the molten solder can flow through the through structure 4333 to the surface of the electrical connection area 433 facing away from the sampling circuit board 42, that is, the upper surface of the second connection part 432. The setting of the through structure 4333 increases the amount of solder on the one hand, and on the other hand, the solder flowing out from the opening of the through structure 4333 can form a cap-like structure on the upper surface of the second connection part 432 after solidification, thereby increasing the connection force between the electrical connection area 433 and the sampling line 421, and further improving the stability and reliability of the welding.

[0253] In a specific embodiment, as shown in Figures 20 and 21, the through structure 4333 may include a through hole provided in the electrical connection area 433, the through hole penetrating the first surface and the second surface of the adapter 43. The through structure 4333 may include multiple through holes, which are spaced apart.

[0254] In other embodiments, the through structure 4333 may also include a countersunk hole and a through hole, the countersunk hole being located on the side of the electrical connection area 433 facing away from the sampling line 421, and the through hole penetrating the countersunk hole and the surface of the electrical connection area 433 facing the sampling line 421; or, the through structure 4333 may also include a notch, the notch being located on the side of the electrical connection area 433.

[0255] In some embodiments, the electrical connection area 433 and the wire core 4213 are crimped together at the sixth opening. There may be a certain contact pressure between the electrical connection area 433 and the wire core 4213 of the corresponding sampling line 421, so that a tight crimped electrical contact is formed between the electrical connection area 433 and the wire core 4213, thereby further improving the reliability and stability of the electrical connection between the two.

[0256] In some embodiments, the sampling circuit board 42 includes a base layer, a sampling line 421 is disposed on one side surface of the base layer, and a second insulating film 4212 is disposed on the surface of the base layer on which the sampling line 421 is disposed.

[0257] In some embodiments, the second insulating film 4212 is attached to the surface of the substrate.

[0258] In a specific embodiment, a groove can be cut into the substrate, the sampling line 421 can be embedded into the groove, and then the second insulating film 4212 can be tightly adhered to the surface of the substrate, thereby firmly installing the sampling line 421 onto the substrate. Alternatively, the second insulating film 4212 may include two layers, with the upper layer attached to the side of the substrate where the sampling line 421 is located, and the lower layer attached to the opposite side of the substrate, the upper and lower films covering the entire substrate and the sampling line 421 into a whole.

[0259] In some embodiments, as shown in FIG6 and FIG22, the sampling assembly 40 further includes a third insulating film 436, the third insulating film 436 being attached to the sampling circuit board 42, and a second connecting portion 432 being sandwiched between the sampling circuit board 42 and the third insulating film 436, the third insulating film 436 at least covering the second connecting portion 432.

[0260] The third insulating film 436 can be connected to the sampling circuit board 42 by adhesive bonding or hot pressing. The projected area of ​​the third insulating film 436 on the side of the sampling circuit board 42 facing the second connection part 432 is greater than or equal to the area occupied by the second connection part 432, so that the third insulating film 436 can at least completely cover the second connection part 432.

[0261] Thus, a third insulating film 436 is attached to the sampling circuit board 42, covering the second connection part 432 and clamping the second connection part 432 in cooperation with the sampling circuit board 42. The third insulating film 436 can not only provide insulation protection for the second connection part 432, but also exert a certain compressive force on the second connection part 432, thereby improving the reliability and stability of the connection between the electrical connection area 433 and the corresponding sampling line 421.

[0262] Please refer to Figures 5 to 7 and Figures 17 to 23. One embodiment of this application provides a battery device 200. The battery device 200 includes a housing 10 and a battery cell assembly 20 disposed within the housing 10. The battery device 200 also includes a sampling assembly 40, which includes a sampling element 41, a sampling circuit board 42, and an adapter 43. The sampling circuit board 42 is electrically connected to the battery management system 30 of the battery device 200. Multiple sampling lines 421 are provided on the sampling circuit board 42, extending linearly along the length of the sampling circuit board 42 and evenly spaced along the width of the sampling circuit board 42. The sampling element 41 is an NTC (Negative Temperature Coefficient) sensor. The negative temperature coefficient (NTC) thermistor sensor is housed within the housing 10 and used to sample the target structure 14, such as a busbar. A sampling circuit board 42 has multiple sampling lines 421 spaced along its width. The adapter 43 includes a first connecting part 431, on which a mounting member 4312 with a mounting groove 4313 is provided. The NTC sensor is installed in the mounting groove 4313 of the mounting member 4312. Sealant is also provided in the mounting groove 4313 to seal the NTC sensor within it. A slot 141 is provided in a portion of the busbar, and the mounting member 4312 can be fitted into the slot 141 to connect the NTC sensor to the busbar component.

[0263] The adapter 43 also includes an adapter portion 435 and a second connecting portion 432. The adapter portion 435 is a copper wire that can be bent or straightened. One end of the adapter portion 435 is electrically connected to the first connecting portion 431, and the other end is electrically connected to the second connecting portion 432. The second connecting portion 432 includes a first branch 4323 and a second branch 4324 that are electrically connected to the first connecting portion 431. The second branch 4324 and the first branch 4323 are spaced apart along the length of the sampling circuit board 42. The electrical connection area 433 includes a plurality of first areas 43. The sampling circuit board 42 consists of multiple sampling lines 31 and multiple second zones 4332. Multiple first zones 4331 are spaced apart along the width of the sampling circuit board 42 on the first branch 4323, and multiple second zones 4332 are spaced apart along the width of the sampling circuit board 42 on the second branch 4324. Along the length of the sampling circuit board 42, adjacent first zones 4331 and second zones 4332 are staggered. One of two adjacent sampling lines 421 corresponds to one first zone 4331, and the other corresponds to one second zone 4332. One of two adjacent sampling lines 421 is soldered to one first zone 4331, and the other is soldered to one second zone 4332, thereby electrically connecting the NTC sensor to the corresponding sampling line 421. The sampling line 421 transmits the temperature information of the aluminum bar collected by the NTC sensor to the battery management system 30.

[0264] The surface of the adapter 43 is covered with a first insulating film 434, which includes a first film layer 4342 and a second film layer 4343. The adapter 43 has a first surface facing the sampling circuit board 42 and a second surface facing away from the sampling circuit board 42. The first film layer 4342 is covered on the first surface, and the second film layer 4343 is covered on the second surface. The first film layer 4342 has a first opening 4341 corresponding to the position of each electrical connection area 433, and the second film layer 4343 has a second opening 4344 corresponding to the position of each electrical connection area 433. Each electrical connection area 433 is exposed relative to the first insulating film 434 through the corresponding first opening 4341 and second opening 4344. The first insulating film 434 also has a fifth opening 4346 located between the first branch 4323 and the second branch 4324. The fifth opening 4346 penetrates the first film layer 4342 and the second film layer 4343, and separates two adjacent first areas 4331 and second areas 4332. The fifth opening 4346 is a strip-shaped elongated hole extending along the width direction of the sampling circuit board 42. The fifth opening 4346 extends from one end of the second connection part 432 along the first direction to the opposite end. A plurality of first areas 4331 and a plurality of second areas 4332 are respectively disposed on opposite sides of the fifth opening 4346.

[0265] The sampling line 421 includes a conductive core 4213 and a second insulating film 4212. The core 4213 is embedded in the base layer of the sampling circuit board 42. The second insulating film 4212 covers the base layer and the core 4213. The second insulating film 4212 has a sixth opening at the position corresponding to the electrical connection area 433. The position of the core 4213 directly opposite the electrical connection area 433 is exposed relative to the second insulating film 4212 through the sixth opening. The electrical connection area 433 is welded to the core 4213 of the corresponding sampling line 421 through the corresponding sixth opening.

[0266] The electrical connection area 433 is also provided with a through structure 4333 that passes through the first surface and the second surface of the adapter 43. The through structure 4333 includes a through hole in the middle of the electrical connection area 433 and a notch on the side. When the electrical connection area 433 and the corresponding wire core 4213 are welded together, the solder can flow through the through hole or the notch to the side surface of the electrical connection area 433 away from the sampling circuit board 42, and solidify on the surface to form a cap-like structure, so as to increase the welding strength between the electrical connection area 433 and the wire core 4213 and improve the stability and reliability of the electrical connection.

[0267] The description of the various embodiments above tends to emphasize the differences between the various embodiments. The similarities or similarities between them can be referred to, and for the sake of brevity, they will not be repeated here.

[0268] This application also provides an energy storage device, including a battery device as described in the above embodiments, the battery device being used to store or provide electrical energy.

[0269] This application also provides an energy storage system, including a power conversion device and an energy storage device as described in the above embodiments, wherein the power conversion device is electrically connected between the power generation device and the energy storage device.

[0270] This application also provides an electrical device, including a battery device as described in the above embodiments, an energy storage device as described in the above embodiments, or an energy storage system as described in the above embodiments, wherein the battery device is used to store or provide electrical energy.

[0271] This application also provides a charging network, including a charging pile and an energy storage device or an energy storage system as described in the above embodiments, wherein the energy storage device is used to provide electrical energy to the charging pile.

[0272] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and not to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application, and they should all be covered within the scope of the claims and specification of this application. In particular, as long as there is no structural conflict, the various technical features mentioned in the embodiments can be combined in any way. This application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A battery device, comprising a housing and a battery cell assembly disposed within the housing, characterized in that, The battery device further includes a sampling component, the sampling component comprising: A sampling element is disposed inside the box and used to sample the target structure; The sampling circuit board has multiple sampling lines spaced out. The adapter includes a first connecting portion and a second connecting portion. The first connecting portion is used for electrical connection with the sampling element, and the second connecting portion is connected to the first connecting portion. The second connecting portion is provided with a plurality of electrical connection areas that are electrically connected to the first connecting portion, and the plurality of electrical connection areas correspond one-to-one with a plurality of sampling lines. At least one of the plurality of electrical connection areas can be electrically connected to the corresponding sampling line to electrically connect the corresponding sampling element and the sampling line, and the plurality of sampling elements can be electrically connected to the corresponding sampling line through a plurality of identical adapters.

2. The battery device as claimed in claim 1, characterized in that, Multiple sampling lines are arranged at intervals along a first direction. The sampling element includes multiple first sampling elements and multiple second sampling elements. The adapter includes multiple first adapters and multiple second adapters. The length of the first adapter along the first direction is different from the length of the second adapter along the first direction. The multiple first sampling elements are connected to the multiple first adapters in a one-to-one correspondence, and the multiple second sampling elements are connected to the multiple second adapters in a one-to-one correspondence.

3. The battery device as claimed in claim 1, characterized in that, Multiple sampling lines are spaced apart along the first direction, and multiple electrical connection areas are spaced apart along the first direction.

4. The battery device as claimed in claim 3, characterized in that, Along the first direction, adjacent electrical connection areas are arranged alternately at intervals.

5. The battery device as described in claim 3 or 4, characterized in that, The second connecting part includes: The main body is connected to the first connecting portion and extends along the first direction; Multiple connecting sub-parts, one end of which is connected to the main body and the other end of which is disposed away from the main body along a second direction, the multiple connecting sub-parts are spaced apart along the first direction, the electrical connection area is disposed on the connecting sub-parts, and the second direction is parallel to the extension direction of the sampling line.

6. The battery device as claimed in claim 5, characterized in that, Each of the aforementioned connecting sub-parts is provided with an electrical connection area.

7. The battery device as claimed in claim 6, characterized in that, The lengths of two adjacent connecting sub-parts along the second direction are not equal, and the electrical connection area is located at the end of the connecting sub-part away from the main body.

8. The battery device as claimed in claim 3 or 4, characterized in that, The second connection portion includes a first branch and a second branch that are electrically connected to the first connection portion. The second branch and the first branch are spaced apart along a direction intersecting the first direction. The electrical connection area includes a plurality of first areas and a plurality of second areas. The plurality of first areas are spaced apart on the first branch, and the plurality of second areas are spaced apart on the second branch. In two adjacent sampling lines, one corresponds to the first area and the other corresponds to the second area.

9. The battery device as claimed in claim 8, characterized in that, The adjacent first and second zones are arranged alternately along a direction perpendicular to the first direction.

10. The battery device as claimed in claim 8 or 9, characterized in that, The number of the first region is at least one-fifth of the number of the sampling lines, and / or the number of the second region is at least one-fifth of the number of the sampling lines.

11. The battery device according to any one of claims 3 to 10, characterized in that, Each of the sampling lines has a straight line segment extending perpendicular to the first direction, and multiple straight line segments are arranged parallel to each other along the first direction.

12. The battery device as claimed in claim 11, characterized in that, Multiple straight segments are sequentially arranged along the first direction starting from one side of the sampling circuit board, and along the first direction, the length of the second connecting portion is greater than or equal to half the length of the sampling circuit board.

13. The battery device according to any one of claims 1 to 12, characterized in that, The surface of the adapter is covered with a first insulating film. The first insulating film has a first opening corresponding to the position of each electrical connection area. The first opening is located on the side of the electrical connection area facing the sampling circuit board, and each electrical connection area is exposed relative to the first insulating film through the corresponding first opening.

14. The battery device as claimed in claim 13, characterized in that, The adapter has a first surface facing the sampling circuit board and a second surface facing away from the sampling circuit board. The first insulating film includes a first film layer and a second film layer. The first film layer covers the first surface, the second film layer covers the second surface, and the first opening is located in the first film layer.

15. The battery device as claimed in claim 14, characterized in that, The second film layer has a second opening corresponding to the position of each of the electrical connection regions, and each of the electrical connection regions is exposed relative to the second film layer through the second opening.

16. The battery device as claimed in claim 14 or 15, characterized in that, The second connection portion has a third opening located between two adjacent electrical connection areas, and the first insulating film has a fourth opening located between two adjacent electrical connection areas. The fourth opening passes through the third opening to connect the first film layer and the second film layer, and the two adjacent electrical connection areas are separated by the corresponding third opening and fourth opening.

17. The battery device as claimed in claim 9 or 10, characterized in that, The surface of the adapter is covered with a first insulating film, the first insulating film including a first film layer and a second film layer. The adapter has a first surface facing the sampling circuit board and a second surface facing away from the sampling circuit board. The first film layer is disposed on the first surface and the second film layer is disposed on the second surface. The first film layer has a first opening at the position of each of the electrical connection regions, and the second film layer has a second opening at the position of each of the electrical connection regions. Each of the electrical connection regions is exposed relative to the first insulating film through the corresponding first opening and second opening. The first insulating film is further provided with a fifth opening at the position between the first branch and the second branch. The fifth opening penetrates the first film layer and the second film layer, and the fifth opening separates two adjacent first regions and second regions.

18. The battery device as claimed in claim 17, characterized in that, The fifth opening is a long, narrow hole that extends from one end of the second connecting portion to the opposite end along the first direction. A plurality of first areas and a plurality of second areas are disposed on opposite sides of the fifth opening.

19. The battery device according to any one of claims 13 to 18, characterized in that, The first insulating film is attached to the surface of the adapter.

20. The battery device according to any one of claims 1 to 19, characterized in that, The adapter further includes an adapter portion, through which the first connecting portion is connected to the second connecting portion.

21. The battery device as claimed in claim 20, characterized in that, The first connecting part is connected to one end of the adapter, the second connecting part is connected to the opposite end of the adapter, and at least the middle part of the adapter is a flexible part.

22. The battery device as claimed in claim 21, characterized in that, The adapter is a flexible bending part.

23. The battery device according to any one of claims 20 to 22, characterized in that, The adapter is a flexible conductive wire.

24. The battery device according to any one of claims 1 to 23, characterized in that, The sampling element is mounted on the first connecting part.

25. The battery device as claimed in claim 24, characterized in that, The first connecting part is provided with a mounting member for connecting with the target structure. The mounting member is provided with a mounting groove, and the sampling element is installed in the mounting groove.

26. The battery device as claimed in claim 25, characterized in that, The mounting component is further provided with a seal, which at least seals the opening of the mounting groove.

27. The battery device as claimed in claim 26, characterized in that, The sampling element is a temperature sensor, and the sealing element is a heat-conducting element.

28. The battery device according to any one of claims 1 to 27, characterized in that, The sampling line includes a conductive core and a second insulating film. The surface of the core facing the second connection portion is covered with the second insulating film. The second insulating film has a sixth opening corresponding to the electrical connection area. The core is exposed relative to the second insulating film through the sixth opening at the position corresponding to the electrical connection area.

29. The battery device as claimed in claim 28, characterized in that, The electrical connection area is welded to the wire core at the sixth opening.

30. The battery device as claimed in claim 29, characterized in that, The electrical connection area is provided with a through structure for solder to pass through, extending from one side surface of the electrical connection area toward the sampling line to the opposite side surface, the through structure passing through the electrical connection area.

31. The battery device as claimed in claim 30, characterized in that, The through structure includes a through hole that penetrates the electrical connection area; And / or, the through structure includes a countersunk hole and a through hole, the countersunk hole being located on the side of the electrical connection area facing away from the sampling line, and the through hole penetrating the countersunk hole and the surface of the electrical connection area facing the sampling line; And / or, the through structure includes a notch located on the side of the electrical connection area.

32. The battery device according to any one of claims 28 to 31, characterized in that, The electrical connection area and the wire core are crimped together at the sixth opening.

33. The battery device according to any one of claims 29 to 32, characterized in that, The sampling circuit board includes a base layer, the wire core is disposed on one side surface of the base layer, and the second insulating film cover is attached to the surface of the base layer on which the sampling wire is disposed.

34. The battery device according to any one of claims 1 to 33, characterized in that, The sampling assembly further includes a third insulating film, which is attached to the sampling circuit board. The second connection portion is sandwiched between the sampling circuit board and the third insulating film, and the third insulating film at least covers the second connection portion.

35. An energy storage device, characterized in that, The battery device includes any one of claims 1 to 34, the battery device being used to store or provide electrical energy.

36. An energy storage system, characterized in that, It includes a power conversion device and an energy storage device as described in claim 35, wherein the power conversion device is used to electrically connect the power generation device and the energy storage device.

37. An electrical device, characterized in that, Includes a battery device according to any one of claims 1 to 34, an energy storage device according to claim 35, or an energy storage system according to claim 36, wherein the battery device is used to store or provide electrical energy.

38. A charging network, characterized in that, It includes a charging pile and an energy storage device as described in claim 36 or an energy storage system as described in claim 37, wherein the energy storage device is used to provide electrical energy to the charging pile.

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